ITMC20080129A1 - SYNTHESIS OF RETICULATED HYALURONIC ACID WITH INHIBITOR OF IALURONIDASI MICROINCAPSULATO. - Google Patents
SYNTHESIS OF RETICULATED HYALURONIC ACID WITH INHIBITOR OF IALURONIDASI MICROINCAPSULATO.Info
- Publication number
- ITMC20080129A1 ITMC20080129A1 IT000129A ITMC20080129A ITMC20080129A1 IT MC20080129 A1 ITMC20080129 A1 IT MC20080129A1 IT 000129 A IT000129 A IT 000129A IT MC20080129 A ITMC20080129 A IT MC20080129A IT MC20080129 A1 ITMC20080129 A1 IT MC20080129A1
- Authority
- IT
- Italy
- Prior art keywords
- hyaluronic acid
- cross
- synthesis
- per
- linked hyaluronic
- Prior art date
Links
- 229920002674 hyaluronan Polymers 0.000 title claims description 39
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 title claims description 38
- 229960003160 hyaluronic acid Drugs 0.000 title claims description 38
- 230000015572 biosynthetic process Effects 0.000 title claims description 27
- 238000003786 synthesis reaction Methods 0.000 title claims description 27
- 239000003112 inhibitor Substances 0.000 title claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000004132 cross linking Methods 0.000 claims description 14
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 claims description 12
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 12
- 108010003272 Hyaluronate lyase Proteins 0.000 claims description 9
- 229940122393 Hyaluronidase inhibitor Drugs 0.000 claims description 9
- 102000001974 Hyaluronidases Human genes 0.000 claims description 9
- 206010040954 Skin wrinkling Diseases 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 9
- 229960002773 hyaluronidase Drugs 0.000 claims description 9
- 230000037303 wrinkles Effects 0.000 claims description 9
- NNJVILVZKWQKPM-UHFFFAOYSA-N Lidocaine Chemical compound CCN(CC)CC(=O)NC1=C(C)C=CC=C1C NNJVILVZKWQKPM-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229960004194 lidocaine Drugs 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 239000003431 cross linking reagent Substances 0.000 claims description 7
- 150000004676 glycans Chemical class 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229920001282 polysaccharide Polymers 0.000 claims description 7
- 239000005017 polysaccharide Substances 0.000 claims description 7
- 229960005070 ascorbic acid Drugs 0.000 claims description 6
- 235000010323 ascorbic acid Nutrition 0.000 claims description 6
- 239000011668 ascorbic acid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QBKSWRVVCFFDOT-UHFFFAOYSA-N gossypol Chemical compound CC(C)C1=C(O)C(O)=C(C=O)C2=C(O)C(C=3C(O)=C4C(C=O)=C(O)C(O)=C(C4=CC=3C)C(C)C)=C(C)C=C21 QBKSWRVVCFFDOT-UHFFFAOYSA-N 0.000 claims description 4
- 239000008363 phosphate buffer Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000011026 diafiltration Methods 0.000 claims description 3
- AFOSIXZFDONLBT-UHFFFAOYSA-N divinyl sulfone Chemical compound C=CS(=O)(=O)C=C AFOSIXZFDONLBT-UHFFFAOYSA-N 0.000 claims description 3
- 239000000787 lecithin Substances 0.000 claims description 3
- 229940067606 lecithin Drugs 0.000 claims description 3
- 239000004530 micro-emulsion Substances 0.000 claims description 3
- 230000003381 solubilizing effect Effects 0.000 claims description 3
- 210000000216 zygoma Anatomy 0.000 claims description 3
- ZKMNUMMKYBVTFN-HNNXBMFYSA-N (S)-ropivacaine Chemical compound CCCN1CCCC[C@H]1C(=O)NC1=C(C)C=CC=C1C ZKMNUMMKYBVTFN-HNNXBMFYSA-N 0.000 claims description 2
- LEBVLXFERQHONN-UHFFFAOYSA-N 1-butyl-N-(2,6-dimethylphenyl)piperidine-2-carboxamide Chemical compound CCCCN1CCCCC1C(=O)NC1=C(C)C=CC=C1C LEBVLXFERQHONN-UHFFFAOYSA-N 0.000 claims description 2
- 102000008186 Collagen Human genes 0.000 claims description 2
- 108010035532 Collagen Proteins 0.000 claims description 2
- VTUSIVBDOCDNHS-UHFFFAOYSA-N Etidocaine Chemical compound CCCN(CC)C(CC)C(=O)NC1=C(C)C=CC=C1C VTUSIVBDOCDNHS-UHFFFAOYSA-N 0.000 claims description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 2
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 claims description 2
- QHOPXUFELLHKAS-UHFFFAOYSA-N Thespesin Natural products CC(C)c1c(O)c(O)c2C(O)Oc3c(c(C)cc1c23)-c1c2OC(O)c3c(O)c(O)c(C(C)C)c(cc1C)c23 QHOPXUFELLHKAS-UHFFFAOYSA-N 0.000 claims description 2
- 150000003926 acrylamides Chemical class 0.000 claims description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 229960003150 bupivacaine Drugs 0.000 claims description 2
- 239000001506 calcium phosphate Substances 0.000 claims description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 2
- 235000011010 calcium phosphates Nutrition 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229960002023 chloroprocaine Drugs 0.000 claims description 2
- VDANGULDQQJODZ-UHFFFAOYSA-N chloroprocaine Chemical compound CCN(CC)CCOC(=O)C1=CC=C(N)C=C1Cl VDANGULDQQJODZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001436 collagen Polymers 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- VXIHRIQNJCRFQX-UHFFFAOYSA-K disodium aurothiomalate Chemical compound [Na+].[Na+].[O-]C(=O)CC(S[Au])C([O-])=O VXIHRIQNJCRFQX-UHFFFAOYSA-K 0.000 claims description 2
- 229960003976 etidocaine Drugs 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 229930000755 gossypol Natural products 0.000 claims description 2
- 229950005277 gossypol Drugs 0.000 claims description 2
- 229920000669 heparin Polymers 0.000 claims description 2
- 229960002897 heparin Drugs 0.000 claims description 2
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 claims description 2
- 239000002502 liposome Substances 0.000 claims description 2
- 229960002409 mepivacaine Drugs 0.000 claims description 2
- INWLQCZOYSRPNW-UHFFFAOYSA-N mepivacaine Chemical compound CN1CCCCC1C(=O)NC1=C(C)C=CC=C1C INWLQCZOYSRPNW-UHFFFAOYSA-N 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims description 2
- 150000003904 phospholipids Chemical class 0.000 claims description 2
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 2
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 229960002796 polystyrene sulfonate Drugs 0.000 claims description 2
- 239000011970 polystyrene sulfonate Substances 0.000 claims description 2
- 229960001807 prilocaine Drugs 0.000 claims description 2
- MVFGUOIZUNYYSO-UHFFFAOYSA-N prilocaine Chemical compound CCCNC(C)C(=O)NC1=CC=CC=C1C MVFGUOIZUNYYSO-UHFFFAOYSA-N 0.000 claims description 2
- 229960004919 procaine Drugs 0.000 claims description 2
- MFDFERRIHVXMIY-UHFFFAOYSA-N procaine Chemical compound CCN(CC)CCOC(=O)C1=CC=C(N)C=C1 MFDFERRIHVXMIY-UHFFFAOYSA-N 0.000 claims description 2
- 229960001549 ropivacaine Drugs 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 150000004671 saturated fatty acids Chemical class 0.000 claims description 2
- 235000003441 saturated fatty acids Nutrition 0.000 claims description 2
- 229960001315 sodium aurothiomalate Drugs 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 claims description 2
- XBJWOGLKABXFJE-YFKPBYRVSA-N telmesteine Chemical compound CCOC(=O)N1CSC[C@H]1C(O)=O XBJWOGLKABXFJE-YFKPBYRVSA-N 0.000 claims description 2
- 229960002384 telmesteine Drugs 0.000 claims description 2
- 229960002372 tetracaine Drugs 0.000 claims description 2
- GKCBAIGFKIBETG-UHFFFAOYSA-N tetracaine Chemical compound CCCCNC1=CC=C(C(=O)OCCN(C)C)C=C1 GKCBAIGFKIBETG-UHFFFAOYSA-N 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 210000004207 dermis Anatomy 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 208000032544 Cicatrix Diseases 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 230000037387 scars Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 1
- 229920002307 Dextran Polymers 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 208000031439 Striae Distensae Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- -1 hydrazides Chemical compound 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/726—Glycosaminoglycans, i.e. mucopolysaccharides
- A61K31/728—Hyaluronic acid
-
- 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
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/20—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/365—Lactones
- A61K31/375—Ascorbic acid, i.e. vitamin C; Salts thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/54—Biologically active materials, e.g. therapeutic substances
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Inorganic Chemistry (AREA)
- Dermatology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
Titolo: “Sintesi di acido ialuronico reticolato con inibitore della ialuronidasi microincapsulato”. Title: “Synthesis of cross-linked hyaluronic acid with microencapsulated hyaluronidase inhibitor”.
Il presente trovato è attinente al settore della industria cosmetica e concerne una sintesi per il trattamento medico-estetico delle rughe e dei volumi del viso e del corpo con cui riempire zigomi, labbra, rughe e depressioni del volto, nonché per conferire loro un gradevole aspetto estetico. The present invention relates to the cosmetic industry sector and concerns a synthesis for the medical-aesthetic treatment of wrinkles and volumes of the face and body with which to fill cheekbones, lips, wrinkles and depressions of the face, as well as to give them a pleasant appearance aesthetic.
Attualmente, nel campo della medicina estetica, è conosciuta una pluralità di sintesi di prodotti rivolti alla correzione delle rughe ed a conferire volumi del viso, senza però alcuna inibizione della ialuronidasi a lento rilascio. Currently, in the field of aesthetic medicine, a plurality of syntheses of products aimed at correcting wrinkles and giving volumes to the face are known, without however any inhibition of slow-release hyaluronidase.
Le sintesi dei prodotti iniettivi per il trattamento del volto sono rivolte a svolgere una azione di riempimento, cioè a correggere gli inestetismi del volto in modo da conferire un aspetto più giovane. The syntheses of the injecting products for the treatment of the face are aimed at carrying out a filling action, that is to correct the imperfections of the face in order to give a younger appearance.
I prodotti noti realizzati con le attuali sintesi possono essere monofasici o bifasici, riassorbibili o permanenti, ma difettano tutti di una azione inibitrice della ialuronidasi a lento rilascio. The known products made with the present syntheses can be monophasic or biphasic, resorbable or permanent, but they all lack a slow-release hyaluronidase inhibitory action.
Per ovviare a detto inconveniente si utilizzano come coadiuvanti creme inibitrici della ialuronidasi con applicazione topica ma non direttamente nella sintesi del prodotto con un agente inibente. To obviate this drawback, hyaluronidase inhibitory creams are used as adjuvants with topical application but not directly in the synthesis of the product with an inhibiting agent.
Nello stato della tecnica citato nel prosieguo del presente brevetto, da non intendersi come riconoscimento alla comune conoscenza, la reticolazione di polisaccaridi con alto e basso peso molecolare per la formulazione di un idrogel monofasico è citata nel brevetto US 2006/0194758 ma, a differenza della presente invenzione, dove all’acido ialuronico vengono aggiunti contemporaneamente idrossido di sodio e BDDE, nel succitato brevetto si aggiunge prima idrossido di sodio e solo successivamente, avvenuta l’idratazione, viene aggiunto il BDDE. L’aggiunta contemporanea delle due sostanze, come rivendicata nella presente invenzione, è un elemento innovativo rispetto alla anteriorità citata perchè ha consentito di ottenere un gel monofasico con una migliore distribuzione della reticolazione senza o con scarsa formazione di particelle. Nel succitato brevetto inoltre non si fanno cenni all’inibizione della ialuronidasi. In the state of the art cited later in this patent, not to be understood as recognition of common knowledge, the cross-linking of polysaccharides with high and low molecular weight for the formulation of a monophasic hydrogel is cited in US 2006/0194758 but, unlike the present invention, where sodium hydroxide and BDDE are added to the hyaluronic acid at the same time, in the aforementioned patent sodium hydroxide is first added and only subsequently, after hydration, is BDDE added. The simultaneous addition of the two substances, as claimed in the present invention, is an innovative element with respect to the aforementioned prior art because it has made it possible to obtain a monophasic gel with a better distribution of cross-linking without or with little formation of particles. Furthermore, no mention is made of the inhibition of hyaluronidase in the aforementioned patent.
Nel brevetto US 6921819 si parla di un nuovo metodo per la reticolazione di acido ialuronico in cui si hanno contemporaneamente l’idratazione e la reticolazione aggiungendo all’acido ialuronico una soluzione di idrossido di sodio e BDDE come nella presente invenzione. Tuttavia viene utilizzato un solo peso molecolare di acido ialuronico e non si fa nessun cenno ad inibitori della ialuronidasi. US patent 6921819 speaks of a new method for crosslinking hyaluronic acid in which hydration and crosslinking occur simultaneously by adding a sodium hydroxide and BDDE solution to the hyaluronic acid as in the present invention. However, only one molecular weight of hyaluronic acid is used and no mention is made of hyaluronidase inhibitors.
Nel brevetto US 4582865 si parla di reticolazione di polisaccaridi utilizzando divinyl sulfone senza nessun accenno alla inibizione della ialuronidasi. In US patent 4582865 we speak of crosslinking of polysaccharides using divinyl sulphone without any mention of the inhibition of hyaluronidase.
Nel brevetto US 7385052 si parla di reticolazione multipla di acido ialuronico utilizzando BDDE ed altri agenti reticolanti senza cenno all’inibitore della ialuronidasi. US patent 7385052 refers to multiple crosslinking of hyaluronic acid using BDDE and other crosslinking agents without mentioning the hyaluronidase inhibitor.
Nel brevetto US 5827937 si parla di reticolazione di polisaccaridi come acido ialuronico, chitosano, destrano, in due steps successivi utilizzando BDDE senza alcun cenno ai pesi molecolari e all’inibizione della ialuronidasi. In US patent 5827937 we speak of crosslinking of polysaccharides such as hyaluronic acid, chitosan, dextran, in two successive steps using BDDE without any mention of molecular weights and inhibition of hyaluronidase.
Scopo della presente invenzione è la realizzazione di un prodotto che risulti dedicato al riempimento delle rughe ed al ripristino dei volumi del viso e del corpo avente caratteristiche ottimali di viscosità ottenute mediante miscelazione di acidi ialuronici ad alto e basso peso molecolare e con diverso grado di reticolazione. The purpose of the present invention is to produce a product that is dedicated to filling wrinkles and restoring the volumes of the face and body, having optimal viscosity characteristics obtained by mixing hyaluronic acids with high and low molecular weight and with a different degree of cross-linking. .
Altro scopo della presente invenzione è la realizzazione di un prodotto che sinergizzi l’azione riempitiva dell’acido ialuronico reticolato con un inibitore della ialuronidasi, allo scopo di aumentare la permanenza del prodotto nel sito di iniezione. Another purpose of the present invention is the creation of a product that synergizes the filling action of cross-linked hyaluronic acid with a hyaluronidase inhibitor, in order to increase the permanence of the product at the injection site.
Altro scopo della presente invenzione è la realizzazione di un prodotto in cui l’inibitore della ialuronidasi sia microincapsulato in maniera tale da rallentarne la degradazione. Another purpose of the present invention is the realization of a product in which the hyaluronidase inhibitor is microencapsulated in such a way as to slow down its degradation.
Questi ed altri scopi sono raggiunti con la sintesi oggetto della presente invenzione che si concretizza in una soluzione comprendente acqua, come mezzo solubilizzante e diluente, acido ialuronico reticolato, che svolge prevalentemente una funzione riempitiva, acido ascorbico 6-esadecanoato come inibitore della ialuronidasi, alfa-lecitina con funzione di emulsionantemicroincapsulante, lidocaina con funzione anestetizzante. These and other purposes are achieved with the synthesis object of the present invention which takes the form of a solution comprising water, as a solubilizing and diluting medium, cross-linked hyaluronic acid, which mainly performs a filling function, 6-hexadecanoate ascorbic acid as an inhibitor of hyaluronidase, alpha -lecithin with microencapsulating emulsifier function, lidocaine with anesthetizing function.
Tale sintesi ha permesso di ottenere: This synthesis made it possible to obtain:
a) una migliore e costante estrudibilità grazie alla viscosità ottimale e senza la formazione di particelle sospese; a) a better and constant extrudability thanks to the optimal viscosity and without the formation of suspended particles;
b) una migliore sua distribuzione nei tessuti senza la formazione di cordoncini evidenti; b) a better distribution in the tissues without the formation of evident cords;
c) una sua maggiore durata per la presenza dell’inibitore microincapsulato. La sintesi oggetto della presente invenzione è quindi una “soluzione base” per il riempimento e la correzione degli inestetismi cutanei. Essa potrà essere combinata con altre sostanze rivolte alla correzione di rughe e volumi del volto e del corpo, con concentrazioni a scelta del fabbricante del dispositivo medico in cui viene inserita. c) its longer duration due to the presence of the microencapsulated inhibitor. The synthesis object of the present invention is therefore a "basic solution" for filling and correcting skin imperfections. It can be combined with other substances aimed at correcting wrinkles and volumes of the face and body, with concentrations chosen by the manufacturer of the medical device in which it is inserted.
La sua formulazione prevede la preparazione di quantità pesate dei componenti, in modo da ottenere la massa complessiva desiderata, con detti componenti aggiunti uno dopo l’altro, partendo dalla miscelazione di Acido Ialuronico con una soluzione costituita da BDDE, NaOH e acqua come solubilizzante in un miscelatore ad una temperatura compresa fra 20° e 25° C, miscelando il tutto per circa 60 minuti con velocità intorno a 50 g/min. Successivamente si scalda la massa a 45°- 55° per circa 4 ore con omogeneizzazione ogni 30 minuti. Quindi si aggiunge tampone fosfato e si procede alla purificazione mediante diafiltrazione. Infine si aggiunge l’inibitore microincapsulato e la lidocaina con omogeneizzazione terminale.<Sulla quantità d’acqua di solubilizzazione, si aggiungono:>Its formulation involves the preparation of weighed quantities of the components, in order to obtain the desired overall mass, with said components added one after the other, starting from the mixing of Hyaluronic Acid with a solution consisting of BDDE, NaOH and water as a solubilizer in a mixer at a temperature between 20 ° and 25 ° C, mixing everything for about 60 minutes with a speed of around 50 g / min. Subsequently the mass is heated to 45 ° - 55 ° for about 4 hours with homogenization every 30 minutes. Then phosphate buffer is added and purification is carried out by diafiltration. Finally, the microencapsulated inhibitor and lidocaine with terminal homogenization are added. <On the quantity of solubilization water, add:>
• Acido ialuronico che è il principale componente della sintesi avente la funzione di legarsi chimicamente con l’agente reticolante in modo da formare un polimero con caratteristiche ottimali per il riempimento cutaneo, perchè estremamente plastico, biocompatibile e altamente idratante. La sua funzione può essere sostituita in tutto e/o in parte da altri polisaccaridi, collagene, acrilati, acrilammidi, acido polilattico, fosfato di calcio e composti correlati equivalenti. La sua concentrazione nella sintesi<finita è compresa tra l'1 e il 4% e preferibilmente tra il 2 ed il 2,5%;>• Hyaluronic acid which is the main component of the synthesis having the function of chemically binding with the cross-linking agent in order to form a polymer with optimal characteristics for skin filling, because it is extremely plastic, biocompatible and highly moisturizing. Its function can be replaced in whole and / or in part by other polysaccharides, collagen, acrylates, acrylamides, polylactic acid, calcium phosphate and equivalent related compounds. Its concentration in the <finished synthesis is between 1 and 4% and preferably between 2 and 2.5%;>
• 1,4-Butanediol-diglicidil etere (BDDE) che ha la funzione di cross linking delle molecole di acido ialuronico rallentandone la degradazione e può essere sostituito da altri bisepossidi, diimmidi, divinilsulfone, idrazidi, glutaraldeide e composti correlati; • 1,4-Butanediol-diglycidyl ether (BDDE) which has the function of cross linking of hyaluronic acid molecules slowing down their degradation and can be replaced by other bisepoxides, diimides, divinylsulfone, hydrazides, glutaraldehyde and related compounds;
• NaOH che ha la funzione alcalinizzante per attivare i gruppi idrossilici e favorire la reazione di cross linking, con una soluzione 0,25 molare e<miscelata con l’1% di BDDE;>• NaOH which has the alkalizing function to activate the hydroxyl groups and promote the cross linking reaction, with a 0.25 molar solution <mixed with 1% BDDE;>
• Acido ascorbico 6-esadecanoato che ha la funzione di inibitore delle ialuronidasi rallentando la degradazione dell’acido ialuronico e prolungando di conseguenza la durata dell’impianto. La sua funzione può essere sostituita da acidi grassi saturi e insaturi con numero di atomi di carbonio compreso fra 10 e 30 ad esso equivalenti, polistirene sulfonato, acido ialuronico sulfonato, eparina, sodio-aurotiomalato, telmesteina, gossypol, acido sulfonico, acido glicerrizico e composti correlati. La sua concentrazione, nella soluzione finita, è compresa fra 0,01 e 1% e<preferibilmente fra 0,1 e 0,5%;>• 6-hexadecanoate ascorbic acid which acts as a hyaluronidase inhibitor by slowing down the degradation of hyaluronic acid and consequently prolonging the life of the implant. Its function can be replaced by saturated and unsaturated fatty acids with a number of carbon atoms between 10 and 30 equivalent to it, polystyrene sulfonate, hyaluronic acid sulfonate, heparin, sodium-aurothiomalate, telmesteine, gossypol, sulphonic acid, glycerrizic acid and related compounds. Its concentration, in the finished solution, is between 0.01 and 1% and <preferably between 0.1 and 0.5%;>
• Alfa-lecitina avente un’azione protettiva dell’inibitore della ialuronidasi formando delle microcapsule all’interno delle quali si posiziona l’inibitore grazie ad un processo di microemulsione. In tale azione può essere sostituito da altri fosfolipidi, liposomi, polisaccaridi, acidi grassi o altri composti ad essi correlati. La sua concentrazione nella soluzione finita è<compresa fra 0,01 e 1% e preferibilmente fra 0,1 e 0,5%;>• Alpha-lecithin having a protective action of the hyaluronidase inhibitor by forming microcapsules inside which the inhibitor is positioned thanks to a microemulsion process. In this action it can be replaced by other phospholipids, liposomes, polysaccharides, fatty acids or other compounds related to them. Its concentration in the finished solution is <between 0.01 and 1% and preferably between 0.1 and 0.5%;>
• Lidocaina avente una azione anestetizzante. Nella sua azione può essere sostituita da procaina, clorprocaina, tetracaina mepivacaina, prilocaina, bupivacaina, etidocaina, ropivacaina. La sua concentrazione nella soluzione finita è compresa fra 0,1 e 0,5% e preferibilmente fra 0,3 e<0,4%;>• Lidocaine having an anesthetizing action. In its action it can be replaced by procaine, chlorprocaine, tetracaine, mepivacaine, prilocaine, bupivacaine, etidocaine, ropivacaine. Its concentration in the finished solution is between 0.1 and 0.5% and preferably between 0.3 and <0.4%;>
• Tampone fosfato pH 7,4 avente un’azione tampone del pH. • Phosphate buffer pH 7.4 having a pH buffering action.
Un ulteriore carattere innovativo del presente trovato è che esso presenta una viscosità ottimale e quindi una migliore estrudibilità del prodotto per la miscelazione di acido ialuronico ad alto peso molecolare in proporzioni variabili da 10/90 P/P a 90/10 P/P con acido ialuronico a basso peso molecolare in una soluzione alcalina contenente l’agente reticolante ad una temperatura compresa tra 25 e 30 gradi per circa un’ora. In questo modo si ottiene una viscosità ottimale e quindi una migliore estrudibilità del prodotto dovuta ad una migliore distribuzione dell’agente crosslincante nella massa in questa prima fase di idratazione e attivazione. Nella fase immediatamente successiva la massa viene riscaldata ad una temperatura compresa tra 45-55° per almeno 4 ore agitando la massa ogni 30 minuti per 5 minuti. Durante questa seconda fase si ottiene la reticolazione della massa. Successivamente si aggiunge del tampone fosfato per aggiustare il pH e idratare la massa. Si procede quindi alla purificazione del prodotto mediante diafiltrazione. Infine vengono aggiunti l’inibitore della ialuronidasi microincapsulato attraverso un processo di microemulsione e la lidocaina miscelando il tutto per circa 30 minuti. A further innovative character of the present invention is that it has an optimal viscosity and therefore a better extrudability of the product for mixing high molecular weight hyaluronic acid in proportions ranging from 10/90 P / P to 90/10 P / P with acid low molecular weight hyaluronic in an alkaline solution containing the crosslinking agent at a temperature between 25 and 30 degrees for about an hour. In this way, an optimal viscosity is obtained and therefore a better extrudability of the product due to a better distribution of the crosslinking agent in the mass in this first phase of hydration and activation. In the immediately following phase the mass is heated to a temperature between 45-55 ° for at least 4 hours, stirring the mass every 30 minutes for 5 minutes. During this second phase the cross-linking of the mass is obtained. Then phosphate buffer is added to adjust the pH and hydrate the mass. The product is then purified by diafiltration. Finally, the microencapsulated hyaluronidase inhibitor through a microemulsion process and lidocaine are added, mixing everything for about 30 minutes.
Il prodotto descritto sarà utilizzato allo stato “puro” con quantità percentuali di agente reticolante dipendenti dall’azione che si intende conseguire, ossia maggiormente reticolato per il riempimento dei volumi, meno reticolato per la correzione delle rughe superficiali. Può essere miscelato con altri componenti che ne possono aumentare la permanenza e/o l’efficacia. The product described will be used in the "pure" state with percentage quantities of cross-linking agent depending on the action to be achieved, ie more cross-linked for filling volumes, less cross-linked for the correction of surface wrinkles. It can be mixed with other components that can increase its permanence and / or effectiveness.
<Gli obiettivi d’impiego sono rivolti principalmente a:><The employment objectives are mainly aimed at:>
• “volto” per il ripristino o l’aumento di volumi di zigomi, labbra, depressioni del viso, al fine di ottenere il giusto equilibrio volumetrico;• “rughe e pliche o cicatrici” al fine di ottenere il riempimento di queste equindi un aspetto più giovanile e gradevole. • "face" to restore or increase the volume of cheekbones, lips, facial depressions, in order to obtain the right volumetric balance; • "wrinkles and folds or scars" in order to obtain the filling of these and therefore an appearance more youthful and pleasant.
• “corpo” al fine di riempire depressioni di varia origine come cicatrici o smagliature. • “body” in order to fill depressions of various origins such as scars or stretch marks.
Claims (15)
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IT000129A ITMC20080129A1 (en) | 2008-07-08 | 2008-07-08 | SYNTHESIS OF RETICULATED HYALURONIC ACID WITH INHIBITOR OF IALURONIDASI MICROINCAPSULATO. |
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WO2002006350A1 (en) * | 2000-07-19 | 2002-01-24 | Laboratoires D'esthetique Appliquee | Polysaccharide crosslinking, hydrogel preparation, resulting polysaccharide(s) and hydrogel(s), uses thereof |
US20020091251A1 (en) * | 1999-02-03 | 2002-07-11 | Vitrolife Uk Limited | Process for the production of multiple cross-linked hyaluronic acid derivatives |
WO2006020994A2 (en) * | 2004-08-13 | 2006-02-23 | Angiotech International Ag | Compositions and methods using hyaluronic acid and hyluronidase inhibitors |
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US20020091251A1 (en) * | 1999-02-03 | 2002-07-11 | Vitrolife Uk Limited | Process for the production of multiple cross-linked hyaluronic acid derivatives |
WO2002006350A1 (en) * | 2000-07-19 | 2002-01-24 | Laboratoires D'esthetique Appliquee | Polysaccharide crosslinking, hydrogel preparation, resulting polysaccharide(s) and hydrogel(s), uses thereof |
WO2006020994A2 (en) * | 2004-08-13 | 2006-02-23 | Angiotech International Ag | Compositions and methods using hyaluronic acid and hyluronidase inhibitors |
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