Formulations for the prevention or the treatment of diseases affecting mucosae or skin, or for pregnancy prevention, and an applicator for the delivery of topical formulations into mucosal cavities
This invention relates to formulations for the prevention of infection and/or abnormal conditions of mucosae and/or skin caused by any pathogen and/or any disease, and more particularly for the prevention of sexually transmitted infections specially HIV and HSV. This invention also relates to formulations for the treatment of infection and/or abnormal conditions of skin and/or mucosac and more particularly for the treatment of herpetic lesions. The formulations could be used as a prophylactic agent to prevent accidental infection of health care workers. The formulations could be used for the healing and/or treatment of bum wounds and prevention of further infection. This invention also relates to the development of a unique vaginal/ano-rectal applicator for the uniform delivery of any topical formulations to treat and/or prevent any infection and/or abnormal conditions of mucosa cavity caused by any pathogen and/or disease.
1. A method of treating or reducing infection by infectious agent capable of causing a sexually transmitted disease or reducing the risk of pregnancy by providing a patient's skin or mucosa with a physical barrier and a chemical barrier against said infectious agent or against a sperm, the method comprising applying to said patient's skin or mucosa, a topical formulation consisting essentially of (a) a poloxamer at a concentration of about 15% to 35% (w/w), (b) a buffer solution and (c) an effective amount of an agent capable of disrupting membrane or protein conformation of said infectious agent or sperm said agent being selected from the group consisting of polyoxyethylene fatty acid-comprising detergent, guanidine, lauroyl sarcosine and sodium lauryl sulfate, whereby, when applied to the surface of a person's skin or mucosa, the composition forms a protective semi-solid layer on the skin or mucosa, said semi-solid layer being resistant to elution by aqueous flow.
2. The method as defined in claim 1 , wherein said topical formulation further contains a drug selected from the group consisting of a drug effective against a disease affecting skin or mucosa or transmitted through skin or mucosa, a drug effective against an infectious agent and a drug effective for preventing pregnancy.
3. The method as defined in claim 2 , wherein said drug is one or more drugs selected from the group consisting of an antimicrobial drug, a spermicidal drug, a bactericidal drug, a virucidal drug, a chemotherapeutic, an anti-inflammatory, an antineoplastic drug and an immunomodulator.
4. The method as defined in claim 3 , wherein said antimicrobial drug is an antiviral agent.
5. The method as defined in claim 4 , wherein said antiviral agent is acyclovir or foscamet.
6. The method as defined in claim 1 , wherein sodium lauryl sulfate is used in a concentration of about 1% to 15% (w/w).
7. The method as defined in claim 1 , wherein the poloxamer is poloxamer 407.