WO2024031949A1 - 纳米酶复合水凝胶滴眼液的制备方法 - Google Patents
纳米酶复合水凝胶滴眼液的制备方法 Download PDFInfo
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- WO2024031949A1 WO2024031949A1 PCT/CN2023/076110 CN2023076110W WO2024031949A1 WO 2024031949 A1 WO2024031949 A1 WO 2024031949A1 CN 2023076110 W CN2023076110 W CN 2023076110W WO 2024031949 A1 WO2024031949 A1 WO 2024031949A1
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- eye drops
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- 239000003889 eye drop Substances 0.000 title claims abstract description 29
- 229940012356 eye drops Drugs 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000017 hydrogel Substances 0.000 title claims abstract description 12
- 108010010803 Gelatin Proteins 0.000 claims abstract description 14
- 239000008273 gelatin Substances 0.000 claims abstract description 14
- 229920000159 gelatin Polymers 0.000 claims abstract description 14
- 235000019322 gelatine Nutrition 0.000 claims abstract description 14
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 13
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 11
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001263 FEMA 3042 Substances 0.000 claims abstract description 9
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims abstract description 9
- SQWDWSANCUIJGW-UHFFFAOYSA-N cobalt silver Chemical compound [Co].[Ag] SQWDWSANCUIJGW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002105 nanoparticle Substances 0.000 claims abstract description 9
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims abstract description 9
- 229940033123 tannic acid Drugs 0.000 claims abstract description 9
- 235000015523 tannic acid Nutrition 0.000 claims abstract description 9
- 229920002258 tannic acid Polymers 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 244000028419 Styrax benzoin Species 0.000 claims description 4
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 4
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 4
- 229960002130 benzoin Drugs 0.000 claims description 4
- 235000019382 gum benzoic Nutrition 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- QPXZALHPZYRQIT-UHFFFAOYSA-N ethanol;methoxymethane Chemical compound CCO.COC QPXZALHPZYRQIT-UHFFFAOYSA-N 0.000 claims description 3
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 claims description 3
- 229940071536 silver acetate Drugs 0.000 claims description 3
- PLKATZNSTYDYJW-UHFFFAOYSA-N azane silver Chemical compound N.[Ag] PLKATZNSTYDYJW-UHFFFAOYSA-N 0.000 claims description 2
- 239000003999 initiator Substances 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 13
- 230000001580 bacterial effect Effects 0.000 abstract description 11
- 229940079593 drug Drugs 0.000 abstract description 9
- 239000003814 drug Substances 0.000 abstract description 9
- 206010061788 Corneal infection Diseases 0.000 abstract description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract description 4
- 241000233866 Fungi Species 0.000 abstract description 3
- GFHNAMRJFCEERV-UHFFFAOYSA-L cobalt chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Co+2] GFHNAMRJFCEERV-UHFFFAOYSA-L 0.000 abstract description 3
- 238000006479 redox reaction Methods 0.000 abstract description 2
- 229910001961 silver nitrate Inorganic materials 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 abstract 1
- 241000589517 Pseudomonas aeruginosa Species 0.000 description 16
- 230000000844 anti-bacterial effect Effects 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 9
- 208000015181 infectious disease Diseases 0.000 description 7
- 206010023332 keratitis Diseases 0.000 description 7
- 239000003242 anti bacterial agent Substances 0.000 description 5
- 229940088710 antibiotic agent Drugs 0.000 description 5
- 238000000338 in vitro Methods 0.000 description 5
- 238000001727 in vivo Methods 0.000 description 5
- 206010059866 Drug resistance Diseases 0.000 description 3
- 210000004087 cornea Anatomy 0.000 description 3
- 230000000699 topical effect Effects 0.000 description 3
- 241000222122 Candida albicans Species 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- CEAZRRDELHUEMR-URQXQFDESA-N Gentamicin Chemical compound O1[C@H](C(C)NC)CC[C@@H](N)[C@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](NC)[C@@](C)(O)CO2)O)[C@H](N)C[C@@H]1N CEAZRRDELHUEMR-URQXQFDESA-N 0.000 description 2
- 229930182566 Gentamicin Natural products 0.000 description 2
- 229940124350 antibacterial drug Drugs 0.000 description 2
- 229940095731 candida albicans Drugs 0.000 description 2
- MYSWGUAQZAJSOK-UHFFFAOYSA-N ciprofloxacin Chemical compound C12=CC(N3CCNCC3)=C(F)C=C2C(=O)C(C(=O)O)=CN1C1CC1 MYSWGUAQZAJSOK-UHFFFAOYSA-N 0.000 description 2
- 201000007717 corneal ulcer Diseases 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229960002518 gentamicin Drugs 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000052769 pathogen Species 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 229930186147 Cephalosporin Natural products 0.000 description 1
- 208000033856 Chemical eye injury Diseases 0.000 description 1
- 206010052143 Ocular discomfort Diseases 0.000 description 1
- 208000023715 Ocular surface disease Diseases 0.000 description 1
- 241000607720 Serratia Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 241000193998 Streptococcus pneumoniae Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229940126575 aminoglycoside Drugs 0.000 description 1
- 230000008952 bacterial invasion Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960000484 ceftazidime Drugs 0.000 description 1
- NMVPEQXCMGEDNH-TZVUEUGBSA-N ceftazidime pentahydrate Chemical compound O.O.O.O.O.S([C@@H]1[C@@H](C(N1C=1C([O-])=O)=O)NC(=O)\C(=N/OC(C)(C)C(O)=O)C=2N=C(N)SC=2)CC=1C[N+]1=CC=CC=C1 NMVPEQXCMGEDNH-TZVUEUGBSA-N 0.000 description 1
- 229940124587 cephalosporin Drugs 0.000 description 1
- 150000001780 cephalosporins Chemical class 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 229960003405 ciprofloxacin Drugs 0.000 description 1
- 239000003246 corticosteroid Substances 0.000 description 1
- 229960001334 corticosteroids Drugs 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 229940124307 fluoroquinolone Drugs 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 150000004687 hexahydrates Chemical class 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003431 steroids Chemical class 0.000 description 1
- 229940031000 streptococcus pneumoniae Drugs 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 229960000707 tobramycin Drugs 0.000 description 1
- NLVFBUXFDBBNBW-PBSUHMDJSA-N tobramycin Chemical group N[C@@H]1C[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N NLVFBUXFDBBNBW-PBSUHMDJSA-N 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/38—Silver; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/40—Peroxides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/42—Proteins; Polypeptides; Degradation products thereof; Derivatives thereof, e.g. albumin, gelatin or zein
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0048—Eye, e.g. artificial tears
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/02—Local antiseptics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the invention belongs to the field of eye drops and medicines, and specifically relates to a preparation method of nanozyme composite hydrogel eye drops.
- Bacterial keratitis is an infection caused by bacterial invasion of the cornea. It develops rapidly and can cause corneal ulcers or even perforation in severe cases. It is one of the major blinding eye diseases in developing countries.
- the most common predisposing factors include: contact lens use, especially at night or long-term wear and inadequate lens disinfection; trauma; ocular surgery, especially corneal surgery; chronic ocular surface disease; systemic disease such as diabetes and/or topical corticosteroids Long-term use of steroids.
- the most common pathogens causing keratitis include Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumoniae and Serratia.
- Pseudomonas aeruginosa keratitis infection is the most serious and difficult to treat. treat.
- Clinical treatment of Pseudomonas aeruginosa keratitis focuses on lesion removal and frequent administration of topical antibiotics to control the development of corneal ulcers as efficiently and quickly as possible.
- topical antibiotics also involves certain risks and problems.
- a review of clinical trials of topical antibiotics for the treatment of bacterial keratitis found that aminoglycoside cephalosporins had an increased relative risk of minor adverse events, such as ocular discomfort or chemical conjunctivitis, compared with fluoroquinolones. Increase.
- the present invention provides a method for preparing nanozyme composite hydrogel eye drops, which first uses hexahydrate The coordination reaction of cobalt chloride and ammonia and the redox reaction of silver nitrate and tannic acid synthesize a tannic acid-complexed silver-cobalt composite nanoparticle (TCN); use water as the medium to mix TCN and acrylate-modified gelatin Ultrasonicate until uniform, and then irradiate with ultraviolet light to prepare nanozyme composite hydrogel material (TCNH) in one step; then mix it with hydrogen peroxide solution to obtain TCNH eye drops.
- TCN tannic acid-complexed silver-cobalt composite nanoparticle
- TCNH nanozyme composite hydrogel material
- the obtained eye drops show broad-spectrum bactericidal effects on a variety of bacteria and fungi, and have good preventive and therapeutic effects on bacterial and drug-resistant bacterial corneal infections.
- the preparation method of the nanozyme composite hydrogel eye drops provided by the invention includes the following steps:
- the preparation method of nanozyme composite hydrogel eye drops includes the following steps:
- step (2) Add silver acetate to the ammonia solution and dissolve it completely. Slowly add the solution dropwise to step (1). After stirring for a period of time, add the tannic acid solution dropwise. Continue stirring to precipitate; centrifuge, clean and dry. Precipitate and store at 350-450°C Calculate for 1-4 hours to obtain tannic acid-combined silver-cobalt composite nanoparticles;
- the concentration of the cobalt chloride aqueous solution is 20-30mmol/L.
- ammonia water is an aqueous solution containing 20% to 28% ammonia.
- step (1) ammonia water is added dropwise to the cobalt chloride aqueous solution, the temperature is gradually raised to 55-65°C, and stirring is continued for 12-18 minutes; the cobalt chloride aqueous solution is then added dropwise to continue the reaction for 1-4 hours.
- step (2) the silver ammonia solution was slowly added dropwise and stirred for 15 min.
- the tannic acid solution was slowly added dropwise and stirred at room temperature for 16 h.
- step (2) wash with water and ethanol in sequence, dry at 60°C for 4 hours, and then calcined at 400°C for 3 hours.
- the acrylate-modified gelatin is methacrylate-modified gelatin.
- the mass concentration of acrylate modified gelatin in the mixture of step (3) is 2.0%-6.0%.
- the irradiation time under ultraviolet light in step (3) is 12-18 minutes.
- the mass ratio of acrylate-modified gelatin and tannic acid-combined silver-cobalt composite nanoparticles is 8-12:1.
- the invention has beneficial effects: the preparation method is simple to operate and the preparation time is short; the obtained eye drops show a broad-spectrum bactericidal effect on a variety of bacteria and fungi, and have good preventive and therapeutic effects on bacterial and drug-resistant corneal infections.
- Figure 1 is a scanning electron microscope photo of the TCN nanozyme prepared in the Example; the nanozyme has a spherical stacking morphology.
- Figure 2 is a scanning electron microscope photograph of the TCNH eye drops prepared in the Example; the morphology of the eye drops is a typical hydrogel with large pores of tens of microns.
- Figure 3 is an optical photograph of the TCNH eye drops prepared in the Example; the nanozyme is evenly dispersed in the eye drops.
- Figure 4 shows the in vitro bacteriostatic test of the TCNH eye drops prepared in the Example - plate test.
- Figure 5 shows the in vitro antibacterial experiment of the TCNH eye drops prepared in the Example - the number of viable bacteria stained green in the control group and the H 2 O 2 group.
- Figure 6 shows the in vitro antibacterial experiment of the TCNH eye drops prepared in the Example - the bacterial morphology of the control group and the H 2 O 2 group under a scanning electron microscope.
- Figure 7 shows the in vivo antibacterial experiment (Pseudomonas aeruginosa) of the TCNH eye drops prepared in the Example - control group and H 2 O 2 group Obvious corneal infection.
- Figure 8 shows the in vivo antibacterial experiment of the TCNH eye drops prepared in the Example (Pseudomonas aeruginosa drug-resistant bacteria).
- step (3) Add 1.0 mL of 25% ammonia solution dropwise into the centrifuge tube in step (2), gradually raise the temperature to 60°C, and continue stirring for 15 minutes;
- step (6) Slowly add the solution in step (5) dropwise to the solution in step (4), and continue stirring for 15 minutes;
- step (8) Slowly add the solution in step (7) dropwise to the solution in step (6), and stir at room temperature for 16 hours;
- step (8) Centrifuge the solution in step (8), wash with water and ethanol, dry at 60°C for 4 hours, and then calcine at 400°C for 3 hours to obtain TCN;
- step (12) Place the centrifuge tube in step (12) under UV light for 15 minutes.
- Benzoin dimethyl ether is used as the photoinitiator.
- the acrylate-modified gelatin has a low concentration, so slight cross-linking occurs, forming a gel-like aqueous solution, TCN Evenly dispersed in gel aqueous solution;
- step (14) Add hydrogen peroxide solution to the centrifuge tube in step (13) and sonicate at room temperature until uniform to obtain TCNH eye drops.
- the TCNH eye drops prepared in the obtained examples were applied to the evaluation of Escherichia coli, Pseudomonas aeruginosa, drug-resistant Pseudomonas aeruginosa and Candida albicans in vitro and the evaluation of Pseudomonas aeruginosa and drug-resistant Pseudomonas aeruginosa in vivo Experiments on the prevention and treatment of corneal infection.
- Figures 4 to 6 show the results of in vitro antibacterial experiments of TCNH eye drops. Antibacterial effect of Pseudomonas aeruginosa, drug-resistant Pseudomonas aeruginosa, Escherichia coli and Candida albicans: As shown in Figure 4, the bacteria in the control group and H 2 O 2 group covered the plate, TCNH and No bacterial colonies were formed on the TCNH+H 2 O 2 group plates. As shown in Figure 5, the control group and H 2 O 2 group had more live bacteria dyed green, and fewer dead bacteria dyed red. The number of bacteria in the TCNH and TCNH+H 2 O 2 groups was significantly reduced. There are only a few scattered ones in the field of vision.
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Inorganic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ophthalmology & Optometry (AREA)
- Communicable Diseases (AREA)
- Oncology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
一种纳米酶复合水凝胶滴眼液的制备方法,利用六水氯化钴与氨水的配位反应以及硝酸银与单宁酸的氧化还原反应合成一种单宁酸配合的银钴复合纳米粒子;将银钴复合纳米粒子和丙烯酸酯修饰明胶混合并超声溶解,然后通过紫外光照射制备出纳米酶复合水凝胶滴眼液。制备方法操作简便且制备时间短,所得滴眼液对多种细菌和真菌具有广谱杀菌的效果,对细菌性和耐药菌角膜感染具有预防治疗效果。
Description
本发明属于滴眼液药物领域,具体涉及纳米酶复合水凝胶滴眼液的制备方法。
细菌性角膜炎是由于细菌侵袭角膜引发的感染,发病迅速,严重者会引发角膜溃疡甚至穿孔,是发展中国家主要致盲性眼病之一。最常见的诱发因素包括:使用隐形眼镜,特别是夜间或长期佩戴隐形眼镜以及镜片消毒不充分;外伤;眼部手术特别是角膜手术;慢性眼表疾病;全身性疾病如糖尿病和/或外用皮质类固醇的长期使用。在常见细菌性病原体中,引起角膜炎最常见的病原体包括金黄色葡萄球菌、铜绿假单胞菌、肺炎链球菌和沙雷氏菌,其中以铜绿假单胞菌性角膜炎感染发病最为严重并且难以治疗。临床上对铜绿假单胞菌性角膜炎的治疗以病灶清除和局部抗生素的频繁用药为主,以尽可能高效快速的控制住角膜溃疡发展。但是,抗生素的使用亦存在一定程度的风险和问题。一项对外用抗生素治疗细菌性角膜炎的临床实验回顾分析显示,与氟喹诺酮类药物相比,氨基糖苷类头孢菌素类药物引起眼部不适或化学结膜炎等轻微不良事件的相对风险有所增加。对眼表分离铜绿假单胞菌耐药性回顾分析表明,铜绿假单胞菌对环丙沙星(9%)、庆大霉素(22%)和头孢他啶(13%)等常见眼部抗生素的平均耐药率虽然相对较低,但对于其耐药性有逐年升高的趋势。所以,对于研发针对铜绿假单胞菌性角膜炎治疗的新型抗菌药物仍是紧迫且必需的。
发明内容
针对引起角膜炎的病原体对常见眼部抗生素的耐药性呈现增加趋势,亟需新型抗菌药物的上述问题,本发明提供一种纳米酶复合水凝胶滴眼液的制备方法,先利用六水氯化钴与氨水的配位反应以及硝酸银与单宁酸的氧化还原反应合成一种单宁酸配合的银钴复合纳米粒子(TCN);以水为媒介,将TCN和丙烯酸酯修饰明胶混合并超声至均匀,然后通过紫外光照射一步制备出纳米酶复合水凝胶材料(TCNH);进而与过氧化氢溶液混合均匀即得TCNH滴眼液。所得滴眼液对多种细菌及真菌显示了广谱杀菌的效果,并对细菌性和耐药菌角膜感染具有良好的预防治疗效果。
本发明提供的纳米酶复合水凝胶滴眼液的制备方法包括以下步骤:
纳米酶复合水凝胶滴眼液的制备方法,包括以下步骤:
(1)向氯化钴水溶液中滴加少量氨水,反应一段时间,再滴加氯化钴水溶液继续反应;
(2)将醋酸银加入到氨水溶液中并完全溶解,将该溶液缓慢滴加到步骤(1)中,搅拌一段时间后滴加单宁酸溶液,继续搅拌,析出沉淀;离心、清洗、干燥沉淀并于350-450℃下
煅烧1-4h,即得单宁酸配合的银钴复合纳米粒子;
(3)将制得的单宁酸配合的银钴复合纳米粒子加入到5wt%-7.5wt%的丙烯酸酯修饰明胶的水溶液中,并加入安息香二甲醚乙醇溶液作为引发剂,超声至均匀,然后将上述混合物置于紫外光下照射,形成凝胶状溶液,再加入过氧化氢溶液并在室温下超声至均匀,即得纳米酶复合水凝胶滴眼液。
进一步的,所述氯化钴水溶液的浓度为20-30mmol/L。
进一步的,所述氨水为含氨20~28%的水溶液。
进一步的,所述步骤(1)向氯化钴水溶液中滴加氨水,逐步升温至55-65℃,并继续搅拌12-18min;再滴加氯化钴水溶液继续反应1-4h。
进一步的,所述步骤(2)缓慢滴加银氨溶液,搅拌15min,缓慢滴加单宁酸溶液,室温搅拌16h。
进一步的,所述步骤(2)依次用水和乙醇清洗,60℃干燥4h,然后置于400℃下煅烧3h。
进一步的,所述丙烯酸酯修饰明胶为甲基丙烯酸酯化明胶。
进一步的,所述步骤(3)混合物中,丙烯酸酯修饰明胶的质量浓度为2.0%-6.0%。
进一步的,所述步骤(3)紫外光下照射时间为12-18min。
进一步的,所述步骤(3)混合物中,丙烯酸酯修饰明胶与单宁酸配合的银钴复合纳米粒子的质量比为8-12:1。
本发明的有益效果:制备方法操作简便且制备时间短;所得滴眼液对多种细菌和真菌显示了广谱杀菌的效果,并对细菌性和耐药菌角膜感染具有良好的预防治疗效果。
图1为实施例制备的TCN纳米酶的扫描电镜照片;纳米酶为球状堆积形貌。
图2为实施例制备的TCNH滴眼液的扫描电镜照片;滴眼液形貌为典型的水凝胶数十微米大孔的形貌。
图3为实施例制备的TCNH滴眼液的光学照片;纳米酶均匀分散在滴眼液中。
图4为实施例制备的TCNH滴眼液的体外抑菌实验-平板实验。
图5为实施例制备的TCNH滴眼液的体外抑菌实验-对照组和H2O2组被染成绿色的活细菌数数量。
图6为实施例制备的TCNH滴眼液的体外抑菌实验-扫描电镜下对照组和H2O2组细菌形态。
图7为实施例制备的TCNH滴眼液的体内抑菌实验(铜绿假单胞菌)-对照组和H2O2组
角膜明显感染情况。
图8为实施例制备的TCNH滴眼液的体内抑菌实验(铜绿假单胞菌耐药菌)。
下面结合具体实施例对本发明做进一步详细说明。
实施例
(1)向离心管中加入238.0mg六水氯化钴;
(2)向步骤(1)的离心管中加入50.0mL水并超声至完全溶解;
(3)向步骤(2)的离心管中逐滴加入1.0mL 25%氨水溶液,逐步升温至60℃,并继续搅拌15min;
(4)向步骤(3)的离心管中加入20.0mL25mmol/L六水氯化钴溶液,继续反应3h;
(5)250.3mg醋酸银加入到10mL 25%氨水溶液中,超声至完全溶解;
(6)将步骤(5)中溶液缓慢滴加到步骤(4)的溶液中,并继续搅拌15min;
(7)2.34g单宁酸加入到40.0mL水中,超声至完全溶解;
(8)将步骤(7)中溶液缓慢滴加到步骤(6)的溶液中,室温搅拌16h;
(9)将步骤(8)中溶液离心,并用水和乙醇清洗,60℃干燥4h,然后置于400℃下煅烧3h,即得TCN;
(10)向离心管中加入7.5wt%150mg丙烯酸酯修饰的明胶;
(11)向步骤(10)的离心管中加入3.0mL水并超声至完全溶解;
(12)向离心管中加入15.0mg TCN、及2μL的浓度10wt%安息香二甲醚乙醇溶液,并超声至均匀;
(13)将步骤(12)的离心管置于紫外光下照射15min,安息香二甲醚作为光引发剂,丙烯酸酯修饰的明胶浓度较低,因此发生轻微交联,形成凝胶状水溶液,TCN均匀分散在凝胶水溶液中;
(14)向步骤(13)的离心管中加入过氧化氢溶液并在室温下超声至均匀即得TCNH滴眼液。
抑菌实验
将所得实施例制备的TCNH滴眼液应用于体外大肠杆菌、铜绿假单胞菌、耐药性铜绿假单胞菌和白色念珠菌评价以及体内铜绿假单胞菌和耐药铜绿假单胞菌角膜感染的预防治疗实验。
图4-图6为TCNH滴眼液的体外抑菌实验结果。铜绿假单胞菌、耐药铜绿假单胞菌、大肠杆菌和白色念珠菌的抑菌效果:如图4所示,对照组和H2O2组细菌长满了平板,TCNH和
TCNH+H2O2组平板无细菌菌落生成。如图5所示,对照组和H2O2组被染成绿色的活细菌数目较多,被染成红色的死细菌很少,TCNH和TCNH+H2O2组细菌个数显著减少,视野里只有零星几个。如图6所示,扫描电镜下对照组和H2O2组细菌形态规则完好,TCNH和TCNH+H2O2组细菌形貌变得不规则,有明显皱缩甚至凹陷。
TCNH滴眼液的体内抑菌实验(铜绿假单胞菌),结果如图7所示,对照组和H2O2组角膜明显感染,TCNH组有轻微感染,TCNH+H2O2组无感染,角膜中细菌数量统计表明TCNH组细菌数量级显著降低。
TCNH滴眼液的体内抑菌实验(铜绿假单胞菌耐药菌),结果如图8所示,对照组、庆大霉素组(Gen)和妥布霉素组(Tob)均有明显感染,TCNH+H2O2组无感染,角膜中细菌数量统计表明,TCNH组耐药细菌数量级显著降低。
以上所述的实施例仅是对本发明的优选实施方式进行描述,并非对本发明的范围进行限定,在不脱离本发明设计精神的前提下,本领域普通技术人员对本发明的技术方案作出的各种变形和改进,均应落入本发明权利要求书确定的保护范围内。
Claims (10)
- 纳米酶复合水凝胶滴眼液的制备方法,其特征在于,包括以下步骤:(1)向氯化钴水溶液中滴加少量氨水,反应一段时间,再滴加氯化钴水溶液继续反应;(2)将醋酸银加入到氨水溶液中并完全溶解,将该溶液缓慢滴加到步骤(1)中,搅拌一段时间后滴加单宁酸溶液,继续搅拌,析出沉淀;离心、清洗、干燥沉淀并于350-450℃下煅烧1-4h,即得单宁酸配合的银钴复合纳米粒子;(3)将制得的单宁酸配合的银钴复合纳米粒子加入到5wt%-7.5wt%的丙烯酸酯修饰明胶的水溶液中,并加入安息香二甲醚乙醇溶液作为引发剂,超声至均匀,然后将上述混合物置于紫外光下照射,形成凝胶状水溶液,再加入过氧化氢溶液并在室温下超声至均匀,即得纳米酶复合水凝胶滴眼液。
- 根据权利要求1所述的制备方法,其特征在于,所述氯化钴水溶液的浓度为20-30mmol/L。
- 根据权利要求1所述的制备方法,其特征在于,所述氨水为含氨20~28%的水溶液。
- 根据权利要求1所述的制备方法,其特征在于,所述步骤(1)向氯化钴水溶液中滴加氨水,逐步升温至55-65℃,并继续搅拌12-18min;再滴加氯化钴水溶液继续反应1-4h。
- 根据权利要求1所述的制备方法,其特征在于,所述步骤(2)缓慢滴加银氨溶液,搅拌15min,缓慢滴加单宁酸溶液,室温搅拌16h。
- 根据权利要求1所述的制备方法,其特征在于,所述步骤(2)依次用水和乙醇清洗,60℃干燥4h,然后置于400℃下煅烧3h。
- 根据权利要求1所述的制备方法,其特征在于,所述丙烯酸酯修饰明胶为甲基丙烯酸酯化明胶。
- 根据权利要求1所述的制备方法,其特征在于,所述步骤(3)混合物中,丙烯酸酯修饰明胶的质量浓度为2.0%-6.0%。
- 根据权利要求1所述的制备方法,其特征在于,所述步骤(3)紫外光下照射时间为12-18min。
- 根据权利要求1或2所述的制备方法,其特征在于:所述步骤(3)混合物中,丙烯酸酯修饰明胶与单宁酸配合的银钴复合纳米粒子的质量比为(8-12):1。
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