Ophthalmic Pharmaceutical Compositions Based on Amino Acids and Sodium Hyaluronate
a technology of amino acids and sodium hyaluronate, applied in the field of ophthalmic pharmaceutical compositions, can solve the problems of not finding a cure for hypolacrimation (dry eye), reducing the quality of vision after administration, and not performing wound healing
Inactive Publication Date: 2008-10-09
PROFESSIONAL DIETETICS SPA +1
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0015]The compositions according to the invention have a surprising effect as adjuvants: they aid regeneration of the epithelial microvilli and induce and accelerate corneal re-epithelialisation after eye surgery.
[0017]slight, moderate or serious alterations of the tear film: the regeneration effect on the epithelial microvilli, which represent the fundamental substrate for effective restoration of the glycocalyx and consequently the tear film, drastically reduces the typical symptoms of dry eye.
[0018]patients who undergo laser treatments (PRK): the reduction in post-operative re-epithelialisation time prevents the appearance of haze and dry eye syndrome which are typical of the first few months after surgery;
[0019]relapsing and / or persistent corneal ulcers: the lasting re-epithelialisation effect prevents relapses and allows complete re-epithelialisation;
[0020]cataract removal surgery, phacoemulsification: the rapid healing effect on the corneal tunnel significantly reduces the discomfort felt by the patient.
Problems solved by technology
No cure for hypolacrimation (dry eye) has yet been found.
These products considerably reduce the quality of vision after administration, and do not perform any wound-healing action.
These operations do not usually require stitches, but the wounds take some time to heal.
No wound-healing agents exist which promote rapid healing of corneal ulcerations, wounds and lesions of post-operative, pathological, traumatic or parasurgical origin.
Method used
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Experimental program
Comparison scheme
Effect test
example
[0036]
Eyedrop formulationGrams perINGREDIENTSunit doseSodium hyaluronate0.3000L-Proline0.0752Glycine0.1000L-Lysine HCl0.0140L-Leucine0.0108Sodium chloride0.9000Distilled waterto 100.0 mL
[0037]Preparation
[0038]30 kg of purified water is mixed with L-proline, glycine, lysine HCl, L-leucine and sodium chloride, and stirred until all the components have completely dissolved.
[0039]Sodium hyaluronate is added separately to 100 kg of purified water, and stirred until the component has completely dissolved.
[0040]The two solutions are combined and made up to the final volume of 144 litres with purified water, checking that the pH value is between 6 and 7, and adjusting with citric acid or sodium bicarbonate if necessary.
[0041]Finally, the solution is filtered through an 0.22 μm filter under sterile conditions and placed in a container.
[0042]Pharmacological Trial
[0043]The protective and regenerative efficacy of the artificial tears according to the invention in reconstituting the corneal epit...
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Abstract
This invention relates to ophthalmic wound-healing pharmaceutical compositions based on amino acids and sodium hyaluronate.
Description
FIELD OF INVENTION[0001]The present invention relates to ophthalmic pharmaceutical compositions, based on amino acids and sodium hyaluronate, with a protective and regenerating action on the corneal epithelial cells.PRIOR ART[0002]No cure for hypolacrimation (dry eye) has yet been found. Dry eye syndrome is treated with eyedrops or gels (artificial tears) having a cleansing, lubricant and disinfecting action, which possess the chemico-physical characteristics of natural tears.[0003]Artificial tears are fairly dense preparations, designed to remain in the eye at length and prevent rapid dilation.[0004]These products considerably reduce the quality of vision after administration, and do not perform any wound-healing action.[0005]Eye surgery designed to correct visual defects and remove cataracts is becoming increasingly common. These operations do not usually require stitches, but the wounds take some time to heal.[0006]No wound-healing agents exist which promote rapid healing of corn...
Claims
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IPC IPC(8): A61K31/728A61P27/04
CPCA61K31/195A61K31/198A61K31/401A61K31/728A61K45/06A61K2300/00A61P17/02A61P27/02A61P27/04
Inventor CONTI, FRANCO
Owner PROFESSIONAL DIETETICS SPA