NO844224L - MICROBIAL ENZYMATIC CONTACT LENSES AND ITS USE - Google Patents
MICROBIAL ENZYMATIC CONTACT LENSES AND ITS USEInfo
- Publication number
- NO844224L NO844224L NO844224A NO844224A NO844224L NO 844224 L NO844224 L NO 844224L NO 844224 A NO844224 A NO 844224A NO 844224 A NO844224 A NO 844224A NO 844224 L NO844224 L NO 844224L
- Authority
- NO
- Norway
- Prior art keywords
- tablet
- enzyme
- protease
- derived
- effervescent
- Prior art date
Links
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- 239000003352 sequestering agent Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000007944 soluble tablet Substances 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- JDVPQXZIJDEHAN-UHFFFAOYSA-M succinamate Chemical compound NC(=O)CCC([O-])=O JDVPQXZIJDEHAN-UHFFFAOYSA-M 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- RTKIYNMVFMVABJ-UHFFFAOYSA-L thimerosal Chemical compound [Na+].CC[Hg]SC1=CC=CC=C1C([O-])=O RTKIYNMVFMVABJ-UHFFFAOYSA-L 0.000 description 1
- 229940033663 thimerosal Drugs 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 229960001322 trypsin Drugs 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0078—Compositions for cleaning contact lenses, spectacles or lenses
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38609—Protease or amylase in solid compositions only
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Eyeglasses (AREA)
- Enzymes And Modification Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Description
Foreliggende oppfinnelse angår generelt linserensemiddelsammen-setninger og deres anvendelse. Mere spesielt angår oppfinnelsen nye enzymrensemidler og metoder for effektiv fjerning av film-oppbygning og avfall fra kontaktlinser som kan være tilstede som proteinholdig-karbohydrat-lipidholdige avsetninger. The present invention generally relates to lens cleaning agent compositions and their use. More particularly, the invention relates to new enzyme cleaning agents and methods for the effective removal of film build-up and waste from contact lenses which may be present as protein-carbohydrate-lipid-containing deposits.
Rensemiddelsammensetninger for kontaktlinser faller genereltContact lens cleanser compositions generally fall
innen en av tre kategorier: overflateaktiv rensemidler; oksyda-tiv rensemidler og enzymatisk rensemidler. Overflateaktive rensemidler er hyppig benyttet, f. eks. ved anvendelse av en dråpe av en oppløsning på en linse, gnidning av linsen mellom fingrene fulgt av skylling. Selv om slike rensemidler vanligvis er sikre og ikke skadelige for linsene når de brukes riktig, er de fleste overflateaktive rensemidler ikke helt effektive når det gjelder fjerning av proteinavsetninger. within one of three categories: surfactant cleaning agents; oxidative cleaning agents and enzymatic cleaning agents. Surfactant cleaning agents are frequently used, e.g. when applying a drop of a solution to a lens, rubbing the lens between the fingers followed by rinsing. Although such cleaners are usually safe and not harmful to the lenses when used properly, most surface-active cleaners are not completely effective in removing protein deposits.
Den andre type rensemiddelsystem involverer oksydative produkt-The second type of cleaning agent system involves oxidative product-
er inneholdende f. eks. persulfater og perborater. De kan benyttes enten ved koldneddypping eller med koking i ca. 30 minutter. Denne ytpe rensemiddelsystem er hovedsakelig effektiv for fjerning av ikke-proteinavsetninger fra kontaktlinser. De er generelt ikke-toksiske, imidlertid kan oksydasjonsmidler ha en ugunstig virkning på linser. En mulig forklaring er at de kan oksydere den prinsippielle polymerkjede ved innføring av pH-føl-'somme molekylgrupper. is containing e.g. persulfates and perborates. They can be used either by cold dipping or by boiling for approx. 30 minutes. This ytpe cleaning agent system is mainly effective for removing non-protein deposits from contact lenses. They are generally non-toxic, however oxidizing agents can have an adverse effect on lenses. A possible explanation is that they can oxidize the principle polymer chain by introducing pH-sensitive molecular groups.
Den tredje metode for rensing er med enzymer. Enzymrensemidler ansees generelt som effektive, sikre og istand til å fjerne hovedkomponenten av kompaktlinsefilm og avfall, nemlig protein. Enkelte har også evnen til å fjerne karbohydrat- og lipidavsetninger fra kontaktlinser. The third method of purification is with enzymes. Enzyme cleaners are generally considered effective, safe and capable of removing the main component of compact lens film and debris, namely protein. Some also have the ability to remove carbohydrate and lipid deposits from contact lenses.
Hittil var tiførselen av proteolytiske, karbolytiske og lipolytiske enzymer, f.eks. proteaser, amylaser og lipaser, for bruk i kontaktlinse rensemiddeloppløsninger, begrenset til plante- og animalske kilder. Rensemiddeloppløsninger fremstilt fra plante- og animalsk avledede enzymer har flere mangler. I de fleste tilfeller gir de enten rensemiddelbadet en ubehagelig lukt eller utvikler en lukt etter noen timers bruk. I enkelte tilfelle vil plante- og animalske proteaser og -amylaser mis-farge linser. Until now, the introduction of proteolytic, carbolytic and lipolytic enzymes, e.g. proteases, amylases and lipases, for use in contact lens cleaning solutions, limited to plant and animal sources. Detergent solutions made from plant- and animal-derived enzymes have several shortcomings. In most cases, they either give the detergent bath an unpleasant smell or develop an odor after a few hours of use. In some cases, plant and animal proteases and amylases will discolour lenses.
Kontaktlinserensemiddeloppløsninger fremstilt med plante- og animalsk avledede proteaser som papain, chymopapain, pankreatin, trypsin, chymotrypsin, pepsin, ficin, karboksypeptidase, amino-peptidase og bromelin er beskrevet f.eks. i US-PS 3 910 296, GB-PS 2 088 581, Japansk søknad 113 233 publisert som Kokai 64 303 samt US-PS 4 096 870. I tillegg til patentreferansene er enzymatiske linserensemidler fremstilt fra proteaser fra svin, nemlig er pankreatin gjort kommersielt tilgjengelig fra Alcon Laboratories. Enzymatiske kontaktlinse rensemidler fremstilt med planteproteaser, f. eks. papain, er også tilgjengelige under varemerket "Soflens" som enzymatiske rensemiddeltabletter. Selv om disse preparater generelt er effektive for rensing av kontaktlinser har de mangler i tillegg til de som tidligere er nevnt. Dette er ved siden av muligheten for ubehagelig lukt og muligheten for misfarging av linser, nemlig kan rensemidler inneholdende proteaser som pankreatin fra svin eller storfe indusere allergisk respons hos noen brukere. I tillegg har oppløsningen inneholdende pankreatin en tendens til å bli uklare. Contact lens cleaning agent solutions prepared with plant- and animal-derived proteases such as papain, chymopapain, pancreatin, trypsin, chymotrypsin, pepsin, ficin, carboxypeptidase, amino-peptidase and bromelain are described e.g. in US-PS 3 910 296, GB-PS 2 088 581, Japanese application 113 233 published as Kokai 64 303 as well as US-PS 4 096 870. In addition to the patent references, enzymatic lens cleaners are produced from porcine proteases, namely pancreatin is made commercially available from Alcon Laboratories. Enzymatic contact lens cleaners made with plant proteases, e.g. papain, are also available under the trade name "Soflens" as enzymatic cleansing tablets. Although these preparations are generally effective for cleaning contact lenses, they have shortcomings in addition to those previously mentioned. This is in addition to the possibility of an unpleasant smell and the possibility of discoloration of the lenses, namely cleaning agents containing proteases such as pancreatin from pigs or cattle can induce an allergic response in some users. In addition, the solution containing pancreatin tends to become cloudy.
Planteproteaser, f. eks. papain, krever vanligvis en lang rensemiddel cyklus innen området 4-12 timer for å fjerne film og avfall fra linsene. Slike lange cykler kan være ugunstige for brukeren. I tillegg krever rensemiddeloppløsninger fremstilt med plante- og animalske proteaser anvendelse av varme, f. eks. 80°C, som er nødvendig ikke bare for å desinfisere linsene, men også for å inaktivere enzymet. Plant proteases, e.g. papain, usually requires a long detergent cycle in the range of 4-12 hours to remove film and debris from the lenses. Such long cycles can be unfavorable for the user. In addition, detergent solutions made with plant and animal proteases require the application of heat, e.g. 80°C, which is necessary not only to disinfect the lenses, but also to inactivate the enzyme.
Kontaktlinse rensemidler inneholdende enzymer krever også stabilisatorer/aktivatorer. F. eks. krever papain cystein. Pancreatin krever kalsiumsalter. Uten bruken av en aktivator Contact lens cleaners containing enzymes also require stabilizers/activators. For example papain requires cysteine. Pancreatin requires calcium salts. Without the use of an activator
vil papain og andre tilsvarende planteenymer forbli inaktive. Aktivatorer som cystein er hygroskopiske og har en tendens til papain and other similar plant enzymes will remain inactive. Activators such as cysteine are hygroscopic and tend to
å fange opp fuktighet for derved å gi fremstillingsvanskelig-heter. Slike enzymprodukter kan kun fremstilles og pakkes under strenge standarder for å fjerne enhver fuktighet fra å trenge inn i pakken da den ellers ville reagere av seg selv og redusere lagringstiden for rensemidlet. to trap moisture to thereby cause manufacturing difficulties. Such enzyme products can only be manufactured and packaged under strict standards to remove any moisture from entering the package as it would otherwise react by itself and reduce the shelf life of the cleaning agent.
Mikrobielle proteaser avledet fra Bacillus og Stremtomyces bakterier og Aspergillus mugg er beskrevet tidligere. US-PS 3 590 121 beskriver en effervescerende tablett til bruk for munnvask. Tabletter og oppløsninger ifølge dette patent benytter en nøytral protease kalt et metallo-enzym meden optimal aktivitet med en pH-verdi på 6 til 8. Fordi metaller er en integral del av enzymet blir aktiviteten inhibert ved nærværet av gelateringsmidler som vanligvis benyttes i kontaktlinse rensemiddel preparater for å binde kalsium og andre uønskede metaller fra å reagere med proteiner og avsetninger på linsene. Som et resultat er enzymer som inhiberes av gelateringsmidler på den måte som er beskrevet i US-PS 3 590 121 generelt utilfredsstill-ende for bruk i forbindelse med kontaktlinser. Microbial proteases derived from Bacillus and Stremtomyces bacteria and Aspergillus molds have been described previously. US-PS 3 590 121 describes an effervescent tablet for use as a mouthwash. Tablets and solutions according to this patent use a neutral protease called a metallo-enzyme with optimal activity at a pH value of 6 to 8. Because metals are an integral part of the enzyme, the activity is inhibited by the presence of gelating agents that are commonly used in contact lens cleaning agent preparations to bind calcium and other unwanted metals from reacting with proteins and deposits on the lenses. As a result, enzymes which are inhibited by gelling agents in the manner described in US-PS 3,590,121 are generally unsatisfactory for use in connection with contact lenses.
US-PS beskriver fremstilling av flytende konsentrater av bakteriell protease og/eller amylase. De flytende konsentrater benyttes for fremstilling av slike produkter som husholdningsvaskemidler.■ US-PS describes the production of liquid concentrates of bacterial protease and/or amylase. The liquid concentrates are used for the production of such products as household detergents.■
I henhold til dette er det et behov for . sikrere og mere pålite-lige enzymrensemiddel preparater som gir et bredt spektrum rense-kapasitet for effektiv fjerning av i det minste protein- og karbohydratfilmer og avfall fra kontaktlinsene. Enzymene bær være stabile i oppløsning, forbli aktive ved forhøyet temperatur og være forenelige med andre komponenter i rensemiddelpreparatet. Fortrinnsvis bør enzymsysternet ikke avhenge av bruken av aktivatorer som kan føre til autonedbrytning med enzymet for derved å begrense lagringstiden. På tilsvarende måte bør renseprosessen være hensiktsmessig for brukeren og eliminere behovet for ut-strakte neddyppingsperioder ved å tillate brukeren fleksibilitet-en med kortere rensetider. Enzymrensemiddelpreparatet bør også være fritt for eller i det vesentlige fritt for lukt og ikke forårsake ubehag for bæreren når linsene gjeninnføres i øynene. According to this, there is a need for . safer and more reliable enzyme cleaner preparations that provide a broad spectrum cleaning capacity for effective removal of at least protein and carbohydrate films and waste from the contact lenses. The enzymes should be stable in solution, remain active at elevated temperatures and be compatible with other components in the cleaning agent preparation. Preferably, the enzyme system should not depend on the use of activators that can lead to autodegradation with the enzyme, thereby limiting the storage time. In a similar way, the cleaning process should be appropriate for the user and eliminate the need for extended immersion periods by allowing the user the flexibility of shorter cleaning times. The enzyme cleaner preparation should also be free or substantially free of odor and not cause discomfort to the wearer when the lenses are reinserted into the eyes.
De bør ikke forårsake irritasjon eller allergiske responser som et resultat av restmengder enzym på linseoverflaten. They should not cause irritation or allergic responses as a result of residual amounts of enzyme on the lens surface.
I henhold til dette, tilveiebringes det et enzymatisk kontaktlinse rensemiddelpreparat inneholdende en effektiv, ikke-toksisk mengde av en protease avledet fra en Bacillus-, Streptomyce- eller Aspergillus mikroorganisme slik at når den er oppløst i en vandig oppløsning vil den effektivt fjerne i det minste protein- og karbohydratfilmer og avfall fra kontaktlinseoverflåtene. Enzymrensemidlene kan inneholde protease alene avledet fra de ovenfor angitte bakterier eller mugg. Enzymene vil fortrinnsvis bestå Accordingly, there is provided an enzymatic contact lens cleaning agent composition containing an effective, non-toxic amount of a protease derived from a Bacillus, Streptomyce or Aspergillus microorganism such that when dissolved in an aqueous solution it will effectively remove at least protein and carbohydrate films and debris from the contact lens surfaces. The enzyme cleaners may contain protease alone derived from the bacteria or mold indicated above. The enzymes will preferably persist
av en blanding hovedsakelig av protease og amylase, og eventuelt en mindre mengde lipase. of a mixture mainly of protease and amylase, and possibly a smaller amount of lipase.
Oppfinnelsen omfatter også forskjellige tabletter inkludert effervescerende og ikke-effervescerende vannoppløselige tabletter inkludert granulat og pulvere som i tillegg inneholder de vanlige inerte bindemidler, strekkmidler, smøremidler o.s.v., andre ønskelige funksjonelle additiver som buffere, preserveringsmidler, gelateringsmidler, tonisitets justeringsmidler o.l., The invention also includes various tablets including effervescent and non-effervescent water-soluble tablets including granules and powders which additionally contain the usual inert binders, stretching agents, lubricants, etc., other desirable functional additives such as buffers, preservatives, gelating agents, tonicity adjusting agents, etc.,
slik at når de er oppløst i vann dannes det en preservert isotonisk oppløsning som lett kan benyttes for linserensing. På tilsvarende måte omfatter oppfinnelsen vannoppløselige mikrobielle protease-amylase tabletter spesielt egnet som varmeenhets enzymtabletter for høytemperatur rensing/desinfisering av linser. Slike tabletter kan tilsettes til vandige isotonisk linsevætings-eller rensemiddeloppløsning for koldvæting eller høytemperatur- so that when they are dissolved in water, a preserved isotonic solution is formed which can easily be used for lens cleaning. In a similar way, the invention includes water-soluble microbial protease-amylase tablets particularly suitable as heating unit enzyme tablets for high-temperature cleaning/disinfection of lenses. Such tablets can be added to aqueous isotonic lens wetting or cleaning solution for cold wetting or high temperature
rensing og desinfisering. Disse vætings- og rensemiddeloppløs-ninger som enzymtablettene tilsettes til kan inneholde preserveringsmidler, gelateringsmidler, overflateaktive stoffer, pH-buffere, tonisitetsjusterende midler o.s.v. cleaning and disinfection. These wetting and cleaning agent solutions to which the enzyme tablets are added may contain preservatives, gelating agents, surfactants, pH buffers, tonicity adjusting agents, etc.
De mikrobielle proteaseholdige linserenseoppløsninger er spesielt effektive ved nebrytning og fjerning av denaturert protein- og karbohydratfilmer og avfall fra kontaktlinser uten enzymaktiva-torer og presenterer derfor færre fremstillings- og pakkeproblem-er ved formulering av de forskjellige rensemiddelpreparater som her omfattes. The microbial protease-containing lens cleaning solutions are particularly effective at breaking down and removing denatured protein and carbohydrate films and waste from contact lenses without enzyme activators and therefore present fewer manufacturing and packaging problems when formulating the various cleaning agent preparations that are included here.
De enzymatiske kontaktlinse rensemidler ifølge oppfinnelsen er spesielt effektive for fjerning av kontaktlinse film og -avfall i løpet av 1 time eller mindre ved høytemperatur rensemetoder. The enzymatic contact lens cleaners according to the invention are particularly effective for removing contact lens film and waste within 1 hour or less with high-temperature cleaning methods.
I tillegg kan de bakterielle enzymrensemidler arbeide med liten eller ingen restbinding eller, konsentrasjon på linseoverflaten, og derfor blir øyevevfølsomhet, vanligvis påvist som stikk og betennelse, i det vesentlig eliminert. In addition, the bacterial enzyme cleaners can work with little or no residual binding or concentration on the lens surface, and therefore eye tissue sensitivity, usually manifested as stinging and inflammation, is essentially eliminated.
Foreliggende oppfinnelse angår rensemiddel oppløsninger for bruk med de fleste kontaktlinser inkludert hårde og myke linser, såvel som de nyere hårdgasspermeable kontaktlinser slik som beskrevet i US-PS 4 327 203. Oppfinnelsen angår også de myke linser som generelt kalles langbrukslinser inneholdende 55% eller mere vann. Uttrykket "myke kontaktlinser" slik det heri benyttes henviser generelt til de kontaktlinser som lett bøyes under liten kraftpåvirkning og vender tilbake til opprinnelig form når kraft-en avlastes. Typiske myke kontaktlinser formuleres fra polyhyd-roksyetyl metakrylat som i de foretrukne formuleringer er fornettet med etylenglykol dimetakrylat. For hensiktsmessighetens skyld kalles denne polymer PHEMA. Myke kontaktlinser fremstilles også fra silisiumpolymerer fornettet f. eks. med dimetyl polysil-oksan. Generelt består "hårde kontaktlinser" som kun dekker øyets cornea vanligvis av polymetylmetakrylat fornettet med etylen glykol dimetakrylat. The present invention relates to cleaning agent solutions for use with most contact lenses including hard and soft lenses, as well as the newer hard gas permeable contact lenses as described in US-PS 4,327,203. The invention also relates to the soft lenses which are generally called extended wear lenses containing 55% or more water . The term "soft contact lenses" as used herein generally refers to those contact lenses which bend easily under the influence of a small force and return to their original shape when the force is relieved. Typical soft contact lenses are formulated from polyhydroxyethyl methacrylate which in the preferred formulations is cross-linked with ethylene glycol dimethacrylate. For convenience, this polymer is called PHEMA. Soft contact lenses are also made from silicon polymers cross-linked, e.g. with dimethyl polysiloxane. In general, "hard contact lenses" that only cover the eye's cornea usually consist of polymethyl methacrylate cross-linked with ethylene glycol dimethacrylate.
Enzym rensemidlene avledes fra mikroorganismer og inkluderer forskjellige typer Bacillus- og Streptomyces bakterier og Aspergillus mugg. Mikroorganismer innen dette område som er kjent å danne hovedsakelig protease og amylase er ment å inkludere slike som subtilis, B. licheniformis, Aspergillus orysae, Aspergillus niger, Streptomyces griseus, Streptomyces naraenia. Protease og amylase avledet fra B^subtilis er generelt foretrukket. De heri beskrevne blandinger kan inneholde kun protease men mikrobielle enzymer i ren eller noe nær ren form er ikke alltid lett tilgjengelige. Således inneholder de fleste kommersielt tilgjengelige produkter blandinger av hovedsakelig protease og så amylase inkludert noe lipase og dette er tilfredsstillende. Amylasen er fortrinnsvis a-amylase fordi 3-amylase er mere varmefølsom. The enzyme cleaners are derived from microorganisms and include various types of Bacillus and Streptomyces bacteria and Aspergillus mold. Microorganisms within this field known to produce mainly protease and amylase are intended to include such as subtilis, B. licheniformis, Aspergillus orysae, Aspergillus niger, Streptomyces griseus, Streptomyces naraenia. Protease and amylase derived from B^subtilis are generally preferred. The mixtures described herein may contain only protease, but microbial enzymes in pure or somewhat close to pure form are not always readily available. Thus, most commercially available products contain mixtures of mainly protease and then amylase including some lipase and this is satisfactory. The amylase is preferably α-amylase because 3-amylase is more heat sensitive.
De mikrobielle enzymprodukter som her beskrives er kommersielt tilgjengelige gjenstander og kan lett oppnås fra et antall produ-senter under forskjellige betegnelser, f. eks. beskriver "Enzeco" en næringsmiddelkvalitet av protease, nemlig Protease AP I oppnådd fra B^subtilis og som også inneholder a-amylase aktivitet. Fungal protease fremstilt fra Aspergillus flavus- oryzae er også tilgjengelig under varemerket "Enzeco". Fungal protease er også oppnåelig under varemerket "Rhozyme 41". "Rhozyme P-11", en protease oppnådd fra Aspergillus flavus- oryzae er også tilgjengelig. Produkter under "Rhozyme" familien av produkter inkluderer kvaliteter som angis som et B-6, PF og P-53 fremstilt fra B^Subtilis . Brukbare proteaser er også kommersielt tilgjengelig under varemerkene "Amano", "Prozyme" og "Newlase" samt videre "Maxatase" og "Prolase". The microbial enzyme products described here are commercially available items and can be easily obtained from a number of manufacturers under different names, e.g. describes "Enzeco" a food grade of protease, namely Protease AP I obtained from B^subtilis and which also contains α-amylase activity. Fungal protease produced from Aspergillus flavus-oryzae is also available under the trademark "Enzeco". Fungal protease is also available under the trade name "Rhozyme 41". "Rhozyme P-11", a protease obtained from Aspergillus flavus-oryzae is also available. Products under the "Rhozyme" family of products include grades designated as a B-6, PF and P-53 produced from B^Subtilis. Useful proteases are also commercially available under the trade names "Amano", "Prozyme" and "Newlase" as well as "Maxatase" and "Prolase".
Proteasen bør være aktiv ved et pH-område fra 5 til ca. 8,5. Optimal pH-verdi for et gitt enzymprodukt kan være over eller under dette området. Fordi imidlertid det mest foretrukne sikre område for rensing av kontaktlinser er ca. det nøytrale området er viktigheten av proteolytisk aktivitet i sterkt alkalisk og The protease should be active at a pH range from 5 to approx. 8.5. The optimum pH value for a given enzyme product may be above or below this range. However, because the most preferred safe area for cleaning contact lenses is approx. the neutral range is the importance of proteolytic activity in strongly alkaline and
surt pH-område ikke kritisk.acidic pH range not critical.
Fortrinnsvis bør proteasen ikke inhiberes i nærvær av et gelateringsmiddel slik som når det gjelder metallo-enzymer. Proteaseaktivitet ifølge oppfinnelsen kan uttrykkes i casein enheter og bestemmes ved vidt kjente prosedyrer involvert nedbrytning av casein. Prosedyren for prøving av nøytral proteaseaktivitet beskrives i Journal of General Physiology, 30 (1947) 291 og Methods of Enzymology, 2, Academic Press, New York 33 (1955). Preferably, the protease should not be inhibited in the presence of a gelling agent as in the case of metallo-enzymes. Protease activity according to the invention can be expressed in casein units and determined by widely known procedures involving the breakdown of casein. The procedure for testing neutral protease activity is described in Journal of General Physiology, 30 (1947) 291 and Methods of Enzymology, 2, Academic Press, New York 33 (1955).
Enzymene forblir fortrinnsvis aktive når de eksponeres til for-høyede temperaturer. Det vil si at de heri beskrevne metoder tilveiebringer rensing av linser ved omgivelsestemperaturbeting-elser ved bruk av "kold" fukteteknikk såvel som betingelser med forhøyet temperatur ved bruk av høytemperatur rense/desinfiser-ingsmetoder. The enzymes preferably remain active when exposed to elevated temperatures. That is, the methods described herein provide cleaning of lenses under ambient temperature conditions using "cold" wetting techniques as well as elevated temperature conditions using high temperature cleaning/disinfecting methods.
De enzymatiske rensemidler inneholdende hovedsakelig den protease og amylase som erkarakterisertovenfor, benyttes i mengder tilstrekkelig til å bryte ned og fjerne filmer og avfall fra kontaktlinser. Det vil si at rensemiddelpreparatene bør inneholde tilstrekkelig enzymaktivitet til at når de er oppløst i linserensemiddelbadet så vil de fjerne i det vesentlige all proteinholdig og karbohydratavfall og -film ved enten koldfukting eller ved forhøyet temperatur. The enzymatic cleaners containing mainly the protease and amylase characterized above are used in quantities sufficient to break down and remove films and waste from contact lenses. That is to say, the cleaning agent preparations should contain sufficient enzyme activity so that when they are dissolved in the lens cleaning agent bath, they will remove essentially all proteinaceous and carbohydrate waste and film by either cold moistening or at an elevated temperature.
Enzymkonsentrasjonen i oppløsninger vil vanligvis ligge innen området 0,0001 og 5% vekt/volum. Enzymtablett preparater, f. eks. ikke effervescerende vannoppløselige varmeenhetstabletter, effer-verscerende tabletter, granulat eller pulverpakker, inneholder vanligvis fra 0,01 til ca. 500 mg enzym og mere spesielt fra ca. 10 til ca. 100 mg enzym hvori protease aktiviteten ligger innen området ca. 30 til ca. 80 casein enheter/mg enzym, og mere spesielt ca. 40 til ca. 70 casein enheter/mg enzym. The enzyme concentration in solutions will usually lie within the range of 0.0001 and 5% weight/volume. Enzyme tablet preparations, e.g. non-effervescent water-soluble heating unit tablets, effervescent tablets, granules or powder packets, usually contain from 0.01 to about 500 mg enzyme and more especially from approx. 10 to approx. 100 mg of enzyme in which the protease activity is within the range of approx. 30 to approx. 80 casein units/mg enzyme, and more specifically approx. 40 to approx. 70 casein units/mg enzyme.
Som angitt tidligere omfatter foreliggende oppfinnelse forskjellige på forhånd målte sammensetninger som hensiktsmessige midler for dispensering av en tilstrekkelig mengde enzym for rensing av linser. De omfatter f.eks. oppløselige tabletter som opp-løses i vandige oppløsninger uten effervescering; effervescerende As stated earlier, the present invention includes various pre-measured compositions as suitable means for dispensing a sufficient amount of enzyme for cleaning lenses. They include e.g. soluble tablets that dissolve in aqueous solutions without effervescence; effervescent
tabletter inkludert granulat og pulvere hvert av hvilke inneholder tilstrekkelig preparat for en enkel rensemiddelcyklus. Også inkludert er store effervescerende tabletter som kan ha en spalt for lett knusing hvorved hver halve tablett kan benyttes ved fremstilling av en rensemiddeloppløsning for hver linse an-ordnet i en linseeske. tablets including granules and powders each of which contains sufficient preparation for a single detergent cycle. Also included are large effervescent tablets which can have a slit for easy crushing whereby each half tablet can be used in the preparation of a cleaning agent solution for each lens arranged in a lens box.
Ved preparering av pulver og forskjellige tabletter blir enzympulveret formulert med kjente tablettbindemidler eller strekkmidler og kan ha inerte bærere, desintegreringsmidler og salter som effervescerer i vandig oppløsning. Fremgangsmåter og stoffer for fremstilling av slike tabletter og pulvere er alt godt kjent i praksis i tablettfremstillings teknikken og deres identi-fisering og utvalg er rutinearbeid. When preparing powders and various tablets, the enzyme powder is formulated with known tablet binders or extenders and may have inert carriers, disintegrants and salts that effervesce in aqueous solution. Procedures and substances for the production of such tablets and powders are all well known in practice in the tablet manufacturing technique and their identification and selection is routine work.
I tillegg til mikrobielle enzymer kan tabletter, granulat og pulvere også formuleres med en eller flere bestanddeler for å sikre optimal renseaktivitet uten ugunstige virkninger på linsen eller på brukerens øye. F. eks. kan enzympreparater inneholde et antall additiver slik som tonisitetsjusteringsmidler, buffere, preserveringsmidler, overflateaktive stoffer, gelateringsmidler for å sikre stabilitet og sterilitet i rensemiddeloppløsningen, totalt dispergering av restlipidavsetninger og lignende. Enzymatisk rensemiddeltabletter og pulvere inneholdende slike totale formuleringer er meget hensiktsmessige for brukeren fordi en rensemiddeloppløsning kan fremstilles ved ganske enkelt å oppløse tabletten i destillert vann. F. eks. kan tabletter, granulat og pulvere formuleres med tonisitetsmidler for å komme nær det osmotiske trykk for vanlige lacrimal fluider som er ekvivalent en 0,9% oppløsning av natriumklorid eller 2,5% glyceroloppløsning. In addition to microbial enzymes, tablets, granules and powders can also be formulated with one or more ingredients to ensure optimal cleaning activity without adverse effects on the lens or the user's eye. For example enzyme preparations may contain a number of additives such as tonicity adjusting agents, buffers, preservatives, surfactants, gelating agents to ensure stability and sterility in the cleaning agent solution, total dispersion of residual lipid deposits and the like. Enzymatic detergent tablets and powders containing such total formulations are very convenient for the user because a detergent solution can be prepared by simply dissolving the tablet in distilled water. For example tablets, granules and powders can be formulated with tonicity agents to approach the osmotic pressure of normal lacrimal fluids which is equivalent to a 0.9% sodium chloride solution or 2.5% glycerol solution.
Det kan også være fordelaktig å inkludere et desinfiseringsmiddel/ germicid som et middel for preservering av rensemiddeloppløs-ningen. Et preserveringsmiddel tilsettes i tilstrekkelig mengde til å gi en konsentrasjon i rensemiddelbadet innen området 0,00001 til ca. 0,5 vekt-%, fortrinnsvis fra ca. 0,0001 til ca. 0,1 vekt-%. Egnede preserveringsmidler inkluderer men er ikke begrenset til thimerosal, sorbinsyre, 1,5-pentandial, alkyl trietanolaminer, fenylkvikksølvsalter, f. eks. nitrat, borat, acetat, klorid og blandinger derav. Andre egnede forbindelser og salter kan benyttes når de er oppløselige i vann ved omgivelsestemperatur i en mengde av minst 0,5 vekt-%. Disse salter inkluderer gluconatet, isothionatet (2-hydroksyetansulfonatet), formatet, acetatet, glutamatet, succinamatet, monodiglykollatet, dimetansulfonatet, laktatet, diisobutyratet, glucoheptonatet. It can also be advantageous to include a disinfectant/germicide as a means of preserving the cleaning agent solution. A preservative is added in sufficient quantity to give a concentration in the detergent bath within the range of 0.00001 to approx. 0.5% by weight, preferably from approx. 0.0001 to approx. 0.1% by weight. Suitable preservatives include but are not limited to thimerosal, sorbic acid, 1,5-pentanedial, alkyl triethanolamines, phenylmercuric salts, e.g. nitrate, borate, acetate, chloride and mixtures thereof. Other suitable compounds and salts can be used when they are soluble in water at ambient temperature in an amount of at least 0.5% by weight. These salts include the gluconate, isothionate (2-hydroxyethanesulfonate), formate, acetate, glutamate, succinamate, monodiglycollate, dimethanesulfonate, lactate, diisobutyrate, glucoheptonate.
Egnede buffere inkluderer f. eks. natrium- eller kalium sitrat, sitronsyre, borsyre, natriumborat, natriumbikarbonat og forskjellig blandede fosfatbuffere inkludert kombinasjoner av Na2HP04, NaH2P04og Kr^PO^. Generelt kan buffere benyttes i mengder innen området 0,05 til ca. 2,5% og aller helst fra ca. 0,1 til 1,5%, alt på vektbasis. Komplette tabletter og pulvere inneholder fortrinnsvis i tillegg til tonicitetsmidler, buffere og preserveringsmidler som beskrevet ovenfor, forskjellige sequesterings- eller gelateringsmidler for å binde metallioner slik som kalsium som ellers kan reagere med protein og ansamles på linseoverflåtene. Etylen-diamintetraeddiksyre (EDTA), og salter derav (dinatrium) er foretrukne eksempler. De tilsettes vanligvis i mengder tilstrekkelig til å gi en oppløsning inneholdende fra ca. 0,01 til ca. 2,0 vekt-%. Suitable buffers include e.g. sodium or potassium citrate, citric acid, boric acid, sodium borate, sodium bicarbonate and various mixed phosphate buffers including combinations of Na2HPO4, NaH2PO4 and Kr^PO^. In general, buffers can be used in amounts within the range of 0.05 to approx. 2.5% and preferably from approx. 0.1 to 1.5%, all on a weight basis. Complete tablets and powders preferably contain, in addition to tonicity agents, buffers and preservatives as described above, various sequestering or gelating agents to bind metal ions such as calcium which may otherwise react with protein and accumulate on the lens surfaces. Ethylenediaminetetraacetic acid (EDTA), and salts thereof (disodium) are preferred examples. They are usually added in quantities sufficient to give a solution containing from approx. 0.01 to approx. 2.0% by weight.
Selv om de mikrobielle enzymrensemiddelpreparater som her beskrives lett kan fremstilles ved mange av de ovenfor angitte additiver slik at når det hele oppløses f. eks. i destillert vann så vil det oppstå en total, preservert isotonisk enzymatisk rensemiddels-oppløsning, kan som en ytterligere foretrukket utførelsesform disse tabletter, pulvere o.s.v. fremstilles frie for slike additiv er inkludert tonicitetsmidler, buffere o.s.v. Det vil si at de forskjellige vannoppløselige tabletter, granulater og pulvere kan formuleres med egnede inerte bestanddeler slik som bærere, smøremidler, bindemidler eller strekkmidler slik som polyetylen-glycol, natriumklorid o.s.v., generelt benyttet i tablettfrem-stillingsteknikken. Denne utførelsesform er spesielt egnet for bruk i forbindelse med andre vandige linsestell produkter slik som fukteoppløsninger, neddyppingsoppløsninger, rensemiddel- og kondisjoneringsoppløsninger såvel som linsepleieoppløsninger for alle formål. Slike produkter inneholder f. eks. tonicitetsmidler, pH-buffere, rense- og fuktemidler, sequesteringsmidler, viskositetsoppbyggede o.s.v. Således kan effervescerende tabletter, formulert f. eks. med en blanding av de mikrobielle enzymer og effervescerende salter som sitronsyre eller vinsyre og natriumbikarbonat, oppløses i en hvilken som helst av de lett tilgjengelige OTC-oppløsninger, f. eks. isotoniske preservert saltoppløs-ning inneholdende et gelateringsmiddel slik som dinatrium EDTA Although the microbial enzyme cleaning agent preparations described here can easily be prepared with many of the above-mentioned additives so that when it all dissolves, e.g. in distilled water, a total, preserved isotonic enzymatic cleaning agent solution will result, as a further preferred embodiment these tablets, powders, etc. are produced free of such additives, including tonicity agents, buffers, etc. That is to say, the various water-soluble tablets, granules and powders can be formulated with suitable inert ingredients such as carriers, lubricants, binders or stretching agents such as polyethylene glycol, sodium chloride, etc., generally used in the tablet manufacturing technique. This embodiment is particularly suitable for use in connection with other aqueous lens care products such as wetting solutions, immersion solutions, cleaning agent and conditioning solutions as well as lens care solutions for all purposes. Such products contain e.g. tonicity agents, pH buffers, cleaning and moisturizing agents, sequestering agents, viscosity-building agents, etc. Thus, effervescent tablets, formulated e.g. with a mixture of the microbial enzymes and effervescent salts such as citric or tartaric acid and sodium bicarbonate, dissolve in any of the readily available OTC solutions, e.g. isotonic preserved saline containing a gelling agent such as disodium EDTA
og et overflateaktivt middel.and a surfactant.
Mikrobiell enzymrenseaktivitet kan suppleres med et overflateaktivt rensemiddel som kan benyttes før eller etter enzymatisk rensing for å fjerne gjenværende lipidavsetninger. I de tilfeller der det har vært en sterk oppbygning av denaturert tåre-film og avfall på linsene kan den lipolytiske virkning av enzymet suppleres ved bruk av et linserensemiddel av typen overflateaktivt middel. Når slike benyttes er nøytrale eller ikke-ioniske foretrukket p.g.a. rense- og kondisjoneringsegenskapene som vanligvis er tilstede i mengder opptil 15 vekt-%. Eksempler på egnede overflateaktive midler inkluderer men er ikke begrenset til polyetylenglykolestere av fettsyrer, f. eks. kokosnøtt, poly-sorbat, polyoksyetylen- eller polyoksypropylenetere av høyere alkaner (C-12~<C>18^<*>Eksempler på foretrukne overf lateaktive midler inkluderer polysorbater 20 ("Tween 20") polyoksyetylen (23) luryleter ("Brij 35") polyoksyetylen (40) stearat ("Myrj". 52) polyoksyetylen (25), propylen glykol stearat ("Atlas" 2612). Microbial enzyme cleaning activity can be supplemented with a surface-active cleaning agent that can be used before or after enzymatic cleaning to remove remaining lipid deposits. In cases where there has been a strong build-up of denatured tear film and waste on the lenses, the lipolytic effect of the enzyme can be supplemented by using a surfactant-type lens cleaner. When such are used, neutral or non-ionic are preferred due to the cleansing and conditioning properties which are usually present in amounts up to 15% by weight. Examples of suitable surfactants include but are not limited to polyethylene glycol esters of fatty acids, e.g. coconut, polysorbate, polyoxyethylene or polyoxypropylene ethers of higher alkanes (C-12~<C>18^<*>Examples of preferred surfactants include polysorbates 20 ("Tween 20") polyoxyethylene (23) luryl ethers ("Brij 35 ") polyoxyethylene (40) stearate ("Myrj". 52) polyoxyethylene (25), propylene glycol stearate ("Atlas" 2612).
Et ikke-ionsik overflateaktivt middel spesielt bestående avA non-ionic surfactant especially consisting of
et polyoksypropylen polyoksyetylen addukt av etylen diamin med en molekylvekt fra ca. 7.500 til ca. 27.000 der minst 40 vekt-% a polyoxypropylene polyoxyethylene adduct of ethylene diamine with a molecular weight of approx. 7,500 to approx. 27,000 where at least 40% by weight
av adduktet er polyoksyetylen, er funnet å være spesielt bruk-bart for rensing og kondisjonering både av myke og hårde kontaktlinser i mengder fra ca. 0,01 til ca. 15%. Slike overflateaktive midler er tilgjengelige under betegnelsen "Tetronic". of the adduct is polyoxyethylene, has been found to be particularly useful for cleaning and conditioning both soft and hard contact lenses in amounts from approx. 0.01 to approx. 15%. Such surfactants are available under the name "Tetronic".
Det mikrobielle protease-amylase og eventuelt lipase kontaktlinse rensemiddel gir forskjellige fordeler inkludert i det vesentlige luktfrihet, ikke-allergenhet, krever ingen ytterligere aktivator eller stabilisator og er helt vannoppløselig. I tillegg kan de mikrobielle protease-amylase enzymrensemidler hensiktsmessig benyttes i forbindelse med kontaktlinse varmedesinfiserings-enheter slik som de som er kommersielt tilgjengelige under betegnelsen "Aseptron" som f. eks. har en entimes rensecyklus der linsene i oppløsning oppvarmes til ca. 80°C og så tillates av-kjøling. Således kan høytemperaturrensning og desinfisering gjennomføres med enzymrensemidlene ifølge oppfinnelsen i løpet . The microbial protease-amylase and optional lipase contact lens cleaner provides various advantages including essentially odorlessness, non-allergenicity, requires no additional activator or stabilizer and is completely water soluble. In addition, the microbial protease-amylase enzyme cleaners can be suitably used in connection with contact lens heat disinfection units such as those commercially available under the name "Aseptron" such as e.g. has a one-hour cleaning cycle where the lenses in solution are heated to approx. 80°C and then allowed to cool. Thus, high-temperature cleaning and disinfection can be carried out with the enzyme cleaners according to the invention in the course of .
av 1 time eller mindre uten de vanlige 2 til 12 timers forfukting og sluttdesinfeksjon. De kortere rensetidscykler er spesielt ønskelige for bruk i forbindelse med "extended wear" linser som kan renses med det mikrobielle protease-amylaseprodukt i løpet av 30 minutter ved en topptemperatur på for eksempel 70°C, for derved å redusere muligheten for fysisk skade slik som misfarging av linsene. Detaljer ved denne entrinns rensemetode er beskrevet i den paralleltløpende søknad 844 223. of 1 hour or less without the usual 2 to 12 hours of pre-moistening and final disinfection. The shorter cleaning time cycles are particularly desirable for use in connection with "extended wear" lenses which can be cleaned with the microbial protease-amylase product within 30 minutes at a peak temperature of, for example, 70°C, thereby reducing the possibility of physical damage such as discoloration of the lenses. Details of this one-step cleaning method are described in the parallel application 844 223.
De følgende spesifikke eksempler viser sammensetninger av fremgangsmåter ifølge oppfinnelsen. Det skal være klart at disse eksempler er illustrerende og ikke på noen måte begrenser oppfinnelsens ramme. The following specific examples show compositions of methods according to the invention. It should be clear that these examples are illustrative and do not in any way limit the scope of the invention.
Eksempel 1♦ Example 1♦
For å studere effektiviteten av bakteriell protease med henblikk på å fjerne proteinfilm avsetninger og avfall fra kontaktlinser blir pressede vannoppløselige varmeenhetstabletter først fremstilt med hver tablett inneholdende ca. 18 mg Protease AP I enzym kommersielt tilgjengelig under betegnelsen "Enzeco". Enzymet er avledet fra subtilis og inneholder prinsipiell protease- og a-amylaseaktivitet. Protease aktiviteten er ca. 53 caseinenheter/mg. Enzymet er stabilt med en pH-verdi mellom 5,0 og 10,0. To study the effectiveness of bacterial protease in removing protein film deposits and debris from contact lenses, pressed water-soluble heat unit tablets are first prepared with each tablet containing approx. 18 mg Protease AP I enzyme commercially available under the name "Enzeco". The enzyme is derived from subtilis and contains principal protease and α-amylase activity. Protease activity is approx. 53 casein units/mg. The enzyme is stable with a pH value between 5.0 and 10.0.
Enzympulveret granuleres først med en tilstrekkelig mengde av polyetylen glykol 4000 av farmasøytisk kvalitet eller et annet egnet bindemiddel og smøremiddel. De granulerte finfordelte stoffer omdannes så til komprimerte tabletter der hver tablett veier ca. 30 mg. The enzyme powder is first granulated with a sufficient amount of pharmaceutical grade polyethylene glycol 4000 or another suitable binder and lubricant. The granulated finely divided substances are then converted into compressed tablets where each tablet weighs approx. 30 mg.
Eksempel 2.Example 2.
Det fremstilles en klar kunstig tåreoppløsning bestående avA clear artificial tear solution consisting of
0,2 g lysozym/100 ml elektrolytt. Elektrolytten er en lageropp-løsning fremstilt fra 2,2 g/l natrium bikarbonat, 7 g/l natrium klorid, 0,0005 g/l kalsium klorid og 1,5 g/l kalium klorid. 0.2 g lysozyme/100 ml electrolyte. The electrolyte is a stock solution prepared from 2.2 g/l sodium bicarbonate, 7 g/l sodium chloride, 0.0005 g/l calcium chloride and 1.5 g/l potassium chloride.
Seks polymacon mykkontaktlinser kommersielt tilgjengelig under varemerket "Soflens" undersøkes mikroskopisk før belegning med lysozymoppløsningen. Linsene blir så nedsenket i lysozymoppløs-ningen i 30 til 60 minutter ved romtemperatur. Linsene anbringes så individuelt i brønnene i "Lensgard" bæreesker og så plassert i "Aseptron" varmeenheter for denaturering av lysozym proteinet. De belagte linser anbringes så i andre "Lensgard" transportesker og dekkes med sorbinsyre preservert steril isotoniske saltopp-løsning inneholdende "Tetronic" 1107 overflateaktivt middel. En enkelt tablett fremstilt i eksempel 1 anbringes i hver brønn av transportesken og eskens lokk festes fast. Hver væske underkastes en varmecyklus i en "Aseptron" varmeenhet med en 1 times oppvarmingscyklus med en maksimal temperatur på 80°C fulgt av en avkjølingscyklus. Etter ferdigoppvarmingscyklus fjernes . linsene fra eskene, gnies og skylles med sorbinsyre preservert steril isotonisk oppløsning inneholdende "Tetronic" 1107 overflateaktivt middel. Hver av linsene undersøkes så mikroskopisk. Det denaturerte protein på alle prøvelinsene er helt fjernet. Ingen defekter eller tilsynelatende misfarginger kan observeres Six polymacon soft contact lenses commercially available under the trademark "Soflens" are examined microscopically before coating with the lysozyme solution. The lenses are then immersed in the lysozyme solution for 30 to 60 minutes at room temperature. The lenses are then placed individually in the wells of "Lensgard" carrying boxes and then placed in "Aseptron" heating units for denaturation of the lysozyme protein. The coated lenses are then placed in other "Lensgard" transport cases and covered with sorbic acid preserved sterile isotonic saline solution containing "Tetronic" 1107 surfactant. A single tablet prepared in example 1 is placed in each well of the transport box and the lid of the box is fixed. Each liquid is subjected to a heating cycle in an "Aseptron" heating unit with a 1 hour heating cycle at a maximum temperature of 80°C followed by a cooling cycle. After the complete heating cycle is removed. the lenses from the boxes, rubbed and rinsed with sorbic acid preserved sterile isotonic solution containing "Tetronic" 1107 surfactant. Each of the lenses is then examined microscopically. The denatured protein on all test lenses has been completely removed. No defects or apparent discoloration can be observed
på noen av de seks linser.on any of the six lenses.
Eksempel 3.Example 3.
For å bedømme foreneligheten av enzymrensetablettene på myke kontaktlinser gjennomføres det først et forsøk med kun enzymrensemiddel. Et andre studium gjennomføres for å bedømme virkning-en av kombinasjonen av enzym, preserverte linserensemiddel og varme på myke kontaktlinser. In order to judge the compatibility of the enzyme cleaning tablets on soft contact lenses, a test is first carried out with only enzyme cleaning agent. A second study is being conducted to assess the effect of the combination of enzyme, preserved lens cleaner and heat on soft contact lenses.
Seks polymacon "Softlens" kontaktlinser undersøkes mikroskopisk for mulige defekter og misfarginger og anbringes så i brønnene av tre "Lensgard" linsetransportesker. Hver av linsene dekkes så med en sorbinsyre preservert isotonisk saltoppløsning inneholdende "Tetronic" 1107 overflateaktivt middel. 30 mg polyetylen glykol tilsettes så til brønnen av den første eske; en vann-oppløselig enzymtablett fra eksempel 1 anbringes så i hver av brønnene i den andre eske og intet tilsettes til den tredje transporteske. Lokkene anbringes så på hver av eskene som så underkastes en enkelt entimes oppvarmingscyklus i en automatisk "Aseptron" oppvarmingsenhet. Dette gjentas fem ganger ved bruk av de samme linser mens man fornyer den preserverte saltoppløs-ning, polyetylenglykol og enzymet ved begynnelsen av hver av cyklene. Etter avslutning av hver cyklus undersøkes linsene mikroskopisk. Ingen defekter eller misfarginger observeres på noen av de seks linser og disse forblir uforandret for studiets varighet. , Six polymacon "Softlens" contact lenses are microscopically examined for possible defects and discoloration and then placed in the wells of three "Lensgard" lens transport boxes. Each of the lenses is then coated with a sorbic acid preserved isotonic saline solution containing "Tetronic" 1107 surfactant. 30 mg of polyethylene glycol is then added to the well of the first box; a water-soluble enzyme tablet from example 1 is then placed in each of the wells in the second box and nothing is added to the third transport box. The lids are then placed on each of the boxes which are then subjected to a single one hour heating cycle in an automatic "Aseptron" heating unit. This is repeated five times using the same lenses while renewing the preserved saline solution, polyethylene glycol and enzyme at the beginning of each cycle. At the end of each cycle, the lenses are examined microscopically. No defects or discolorations are observed on any of the six lenses and these remain unchanged for the duration of the study. ,
Eksempel 4.Example 4.
Et okkulært irritasjonsstudium gjennomføres ved bruk av fluorescein fargestoff retensjon på kaninøye cornea utstyrt med kontaktlinser behandlet i rensemiddeloppløsning fremstilt med "Enzeco" AP oppvarmingsenhet enzymtabletter ifølge eksmepel 1. Øynene til tre kaniner utstyres med "Soflens" linser, tre av hvilke er renset ved oppvarming i en "Aseptron" oppvarmingsenhet inneholdende enzymtablettene fra eksempel 1 oppløst i en sorbinsyre preservert isotonisk saltoppløsning kommersielt tilgjengelig under betegnelsen "Sensitive Eyes". Kontrolløyet utstyres med en linse oppvarmet med kun en "Sensitive eyes" oppløsning. Alle øynene undersøkes makroskopisk hver dag før innføring og etter fjerning av linsene som bæres gjennomsnitlig seks timer pr. dag i fem dager. Fluorescein flekking gjennomføres i forbindelse med UV lys før initiering av studiet, gjentas etter tre dagers bæring og igjen ved ferdig studium. Enhver okkulær irritasjon påvises ved fargestoff absorbsjon ved bruk av spaltlampe mikro-skopi . An ocular irritation study is carried out using fluorescein dye retention on rabbit eye corneas equipped with contact lenses treated in cleaning agent solution prepared with "Enzeco" AP heating unit enzyme tablets according to example 1. The eyes of three rabbits are equipped with "Soflens" lenses, three of which are cleaned by heating in an "Aseptron" heating unit containing the enzyme tablets of Example 1 dissolved in a sorbic acid preserved isotonic saline solution commercially available under the name "Sensitive Eyes". The control eye is equipped with a lens heated with only a "Sensitive eyes" solution. All eyes are examined macroscopically every day before insertion and after removal of the lenses, which are worn for an average of six hours per day. day for five days. Fluorescein staining is carried out in connection with UV light before initiation of the study, repeated after three days of wearing and again at the end of the study. Any ocular irritation is detected by dye absorption using slit-lamp micro-scopy.
Alle øyne viste minimal konjunktiv rødhet, sannsynligvis p.g.a. linsebæring og manipulering. Ingen positiv fluorescein flekking ble observert. Ingen positive reaksjoner observeres makroskopisk under dette studium. All eyes showed minimal conjunctival redness, probably due to lens wear and manipulation. No positive fluorescein staining was observed. No positive reactions are observed macroscopically during this study.
Eksempel 5.Example 5.
Sammenlignende studier gjennomføres for å bedømme cytotoksisitet-en for linserenseoppløsninger fremstilt med varmeenhetstablettene ifølge eksempel 1. Studien benytter den "Agar Overlay Assay" teknikk som er publisert i "Journal of Pharmaceutical Sciences", vol. 54 (1965) side 1545-1547 av W.L. Guess et al. Fire "Soflens" kontaktlinser fuktes i oppløsning fremstilt ved oppløsning av enzymtabletter i brønnene til "Lensgard"linseesker med sorbinsyre preservert isotoniske saltoppløsning inneholdende "Tetronic" 1107 overflateaktivt middel. Ytterligere fire linser anbringes i eskene inneholdende kun preservert salt- "Tetronic" oppløsning som tjener som kontroller. Linsene oppvarmes i en cyklus i "Aseptron" varmeenheter og skylles i preservert saltoppløsning-"Tetronic" oppløsning, varmebehandles så i en ytterligere cyklus og skylles igjen før de plasseres på L-929 muse fibro-blastceller for å observere lysering av cellene. Comparative studies are conducted to assess the cytotoxicity of lens cleaning solutions prepared with the heating unit tablets of Example 1. The study uses the "Agar Overlay Assay" technique published in the "Journal of Pharmaceutical Sciences", vol. 54 (1965) pp. 1545-1547 by W.L. Guess et al. Four "Soflens" contact lenses are moistened in solution prepared by dissolving enzyme tablets in the wells of "Lensgard" lens boxes with sorbic acid preserved isotonic saline solution containing "Tetronic" 1107 surfactant. An additional four lenses are placed in the boxes containing only preserved saline "Tetronic" solution to serve as controls. The lenses are heated for one cycle in "Aseptron" heating units and rinsed in preserved saline-"Tetronic" solution, then heat treated for a further cycle and rinsed again before being placed on L-929 mouse fibroblast cells to observe lysis of the cells.
Fraværet av en avfarget sone indikerte mangelen på lyserte celler og fravær av cytotoksisk respons. The absence of a discolored zone indicated the lack of lysed cells and absence of cytotoxic response.
Eksempel 6.Example 6.
Effervescerende enzym tabletter.Effervescent enzyme tablets.
Effervervescerende enzymtabletter fremstilles ved først å pre-parere et effervescerende strekkmiddel inneholdende natriumbikarbonat, sitronsyre og natriumklorid i et vektforhold på 3:1:1. Hvert av saltene oppmales fint separat i en morter og blandes Effervescent enzyme tablets are prepared by first preparing an effervescent stretching agent containing sodium bicarbonate, citric acid and sodium chloride in a weight ratio of 3:1:1. Each of the salts is finely ground separately in a mortar and mixed
så ved hjelp av morter og pistil. En liten mengde destillert vann, f. eks. <0,5 ml, tilsettes til blandingen som så blandes ytterligere for å initiere molekylær interaksjon av slatene. Blandingen spres jevnt på en glassflate og anbringes i en vakuum-ovn i 2-3 timer ved 60°C. Blandingen oppmales så til fin til-stand i en morter og blandes med "Enzeco" Protease AP 1 enzym-pulver i et forhold strekkmiddel:ensym = 2:1 for derved å oppnå then using a mortar and pestle. A small amount of distilled water, e.g. <0.5 ml, is added to the mixture which is then mixed further to initiate molecular interaction of the plates. The mixture is spread evenly on a glass surface and placed in a vacuum oven for 2-3 hours at 60°C. The mixture is then ground to a fine state in a mortar and mixed with "Enzeco" Protease AP 1 enzyme powder in a ratio of extender:enzyme = 2:1 to thereby obtain
100 mg enzym pr. tablett. Tabletter fremstilles så ved kompri-mering ved 2500 psig. 100 mg of enzyme per tablet. Tablets are then produced by compression at 2500 psig.
Disse tabletter prøves så på oppløsningstid; oppløsningsopptreden og effervescense karakteristika. Oppløsning i 10 ml destillert vann krever 37 sek., et hvitt skum opptrer umiddelbart men av-settes hurtig deretter hvorved det oppstår en klar og fargeløs oppløsning. Oppløsning av tabletten skjedde enhetlig. These tablets are then tested for dissolution time; dissolution behavior and effervescence characteristics. Dissolution in 10 ml of distilled water requires 37 sec., a white foam appears immediately but settles quickly afterwards, resulting in a clear and colorless solution. Dissolution of the tablet occurred uniformly.
Mens oppfinnelsen er beskrevet i forbindelse med spesifikke eksempler er disse kun illustrerende. I henhold til dette kan mange alternativer, modifikasjoner og variasjoner gjennomføres og disse er ment å ligge innenfor oppfinnelsens ramme. While the invention is described in connection with specific examples, these are only illustrative. According to this, many alternatives, modifications and variations can be carried out and these are intended to be within the scope of the invention.
Claims (23)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US54531583A | 1983-10-24 | 1983-10-24 |
Publications (1)
Publication Number | Publication Date |
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NO844224L true NO844224L (en) | 1985-04-25 |
Family
ID=24175739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO844224A NO844224L (en) | 1983-10-24 | 1984-10-23 | MICROBIAL ENZYMATIC CONTACT LENSES AND ITS USE |
Country Status (7)
Country | Link |
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EP (1) | EP0140669A1 (en) |
JP (1) | JPS60121417A (en) |
AU (1) | AU568882B2 (en) |
CA (1) | CA1231069A (en) |
DK (1) | DK507884A (en) |
ES (1) | ES8608185A1 (en) |
NO (1) | NO844224L (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4670178A (en) * | 1985-09-09 | 1987-06-02 | Allergan Pharmaceuticals, Inc. | Method for the simultaneous cleaning and disinfecting of contact lenses |
USRE32672E (en) * | 1985-09-09 | 1988-05-24 | Allergan, Inc. | Method for simultaneously cleaning and disinfecting contact lenses using a mixture of peroxide and proteolytic enzyme |
JPH01180515A (en) * | 1988-01-13 | 1989-07-18 | Tome Sangyo Kk | Cleaning liquid and cleaning method for contact lens |
CA2009118C (en) * | 1989-02-21 | 1996-02-27 | Mary F. Mowrey-Mckee | Method and composition for cleaning and disinfecting contact lenses |
US5328846A (en) * | 1989-08-03 | 1994-07-12 | The Penn State Research Foundation | Method for removing exogenous deposits from hydrophilic contact lenses |
JPH03197921A (en) * | 1989-12-26 | 1991-08-29 | Kuraray Co Ltd | Detergent for contact lens |
GR1001126B (en) * | 1991-10-09 | 1993-04-28 | Tsakas Spyros Lavipharm Ae | Cleaning-sterilization of contact lenses via a new enzymatic and technical methodology |
US5529788A (en) * | 1994-10-07 | 1996-06-25 | Southland, Ltd. | Enzyme containing effervescent cleaning tablet |
JP2624641B2 (en) * | 1996-05-20 | 1997-06-25 | ホーヤ株式会社 | Cleaning solution for contact lenses |
DE10005574A1 (en) * | 2000-02-09 | 2001-08-23 | Reckitt Benckiser Nv | Detergent composition in tablet form |
WO2012110564A1 (en) * | 2011-02-16 | 2012-08-23 | Novozymes A/S | Detergent compositions comprising m7 or m35 metalloproteases |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3590121A (en) * | 1969-02-05 | 1971-06-29 | Monsanto Co | Effervescent dental compositions |
DE2528490C2 (en) * | 1975-06-26 | 1983-04-28 | Henkel KGaA, 4000 Düsseldorf | Process for the production of acidic protease |
US4078564A (en) * | 1976-02-24 | 1978-03-14 | Novo Enzyme Corporation | Intralenticular cataract surgery |
FI791296A (en) * | 1978-04-21 | 1979-10-22 | Peter Michael John Bedding | FARING MATERIAL FOR MATERIAL PUTSNING AV MJUKA KONTAKTLINSER |
JPS54140553A (en) * | 1978-04-24 | 1979-10-31 | Senju Pharma Co | Contact lens washing liquid |
-
1984
- 1984-10-16 CA CA000465504A patent/CA1231069A/en not_active Expired
- 1984-10-22 AU AU34542/84A patent/AU568882B2/en not_active Ceased
- 1984-10-22 EP EP84307265A patent/EP0140669A1/en not_active Withdrawn
- 1984-10-23 ES ES537003A patent/ES8608185A1/en not_active Expired
- 1984-10-23 JP JP59221374A patent/JPS60121417A/en active Granted
- 1984-10-23 NO NO844224A patent/NO844224L/en unknown
- 1984-10-24 DK DK507884A patent/DK507884A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JPS60121417A (en) | 1985-06-28 |
AU3454284A (en) | 1985-05-02 |
ES8608185A1 (en) | 1986-06-01 |
DK507884A (en) | 1985-04-25 |
DK507884D0 (en) | 1984-10-24 |
EP0140669A1 (en) | 1985-05-08 |
ES537003A0 (en) | 1986-06-01 |
JPH0146048B2 (en) | 1989-10-05 |
CA1231069A (en) | 1988-01-05 |
AU568882B2 (en) | 1988-01-14 |
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