Method for treating recurring skin and mucous membrane diseases caused by HSV-1 and HSV-2

Abstract

The invention relates to medicine and specifically to methods for treating recurring forms of diseases related to the family of herpes viruses. A method for treating recurring diseases of the skin and mucous membranes caused by HSV-1 and HSV-2 involves applying a preparation to an affected area, said preparation including a base containing 0.5% or 1% of an active substance, namely a (2,6-dichlorophenyl)amide salt of carbopentoxysulfanilic acid of general formula (I): where X is Na, K, NH.sub.4; the preparation is applied twice daily for 3-5 days and, should prodromes appear, a second course of treatment is carried out, in which the preparation is applied 1-2 times daily for 2-3 days; the base containing the active substance can be in the form of a cream, an ointment, a gel, a suspension, suppositories, a patch or a film. Carrying out the second course of treatment provides a sharp increase in therapeutic efficacy, even to the extent of preventing relapse over a prolonged period of observation as a result of the effect of the preparation, upon reuse, on the viruses persisting in nerve cells.

Claims

1. A method for treating recurring diseases of the skin and mucous membranes caused by HSV-1 or HSV-2 in a subject in need thereof, said method comprising administering to an affected area of the subject a preparation comprising a (2,6-dichlorophenyl)amide salt of carbopentoxysulfanilic acid of the general formula: ##STR00004## wherein X is Na, K, or NH.sub.4.

2. The method of claim 1, wherein the preparation is selected from the group consisting of a cream, an ointment, a gel, a suspension, a suppository, a patch, and a film.

3. The method of claim 1, comprising a second period of administration of the preparation upon symptom recurrence after a first period of administration of the preparation.

4. The method of claim 3, wherein the first period of administration of the preparation is twice daily for 3-5 days, and the second period of administration of the preparation is 1-2 times daily for 2-5 days.

5. The method of claim 1, wherein the preparation comprises 0.5% or 1% of the (2,6-dichlorophenyl)amide salt of carbopentoxysulfanilic acid.

6. A method for inhibiting growth of a herpes virus in neurons of a subject in need thereof comprising administering to the subject a preparation comprising a (2,6-dichlorophenyl)amide salt of carbopentoxysulfanilic acid of the general formula: ##STR00005## wherein X is Na, K, or NH.sub.4.

7. The method of claim 6, wherein the herpes virus is HSV-1 or HSV-2.

8. The method of claim 6, wherein the preparation is selected from the group consisting of a cream, an ointment, a gel, a suspension, a suppository, a patch, and a film.

9. The method of claim 6, comprising a second period of administration of the preparation upon symptom recurrence after a first period of administration of the preparation.

10. The method of claim 9, wherein the first period of administration of the preparation is twice daily for 3-5 days, and the second period of administration of the preparation is 1-2 times daily for 2-5 days.

11. The method of claim 6, wherein the preparation comprises 0.5% or 1% of the (2,6-dichlorophenyl)amide salt of carbopentoxysulfanilic acid.

Description

PREFERRED EMBODIMENT

(1) The implementation of the claimed method is further explained by means of the examples provided below.

Example 1. Treatment of a Herpes Relapse

(2) Clinical progression of a recurring form of HSV-1 or HSV-2 infection is characterized by various properties—age of illness, duration of relapses, location of herpetic eruptions, area of damage, reaction of regional lymph nodes, addition of a secondary infection and effectiveness of the previously conducted antiviral therapy; however, the key criterion is the frequency of relapses. Light form of the infection—up to 4 relapses per year, medium—5-7 relapses per year, severe—8 or more relapses per year. Existing topical preparations can reduce the intensity and duration of a relapse, but have no effect on the frequency of relapses.

(3) 5 patients with medium form of the disease (5-7 relapses per year) and 5 patients with severe form (8 or more relapses per year) were chosen for the study. All patients had many years of experience of treatment with Aciclovir in the form of cream and pills. The previously used preparations did not reduce the number of relapses for any of the patients. The study did not include patients that had more than 25% of cases of “false” prodromal symptoms or had non-progressing subsequent elements of damage (which stopped at the papule stage). During each relapse all patients applied to the affected area a cream based on lanolin containing 0.5% of the active substance—(2,6-dichlorophenyl)amide sodium salt of carbopentoxysulfanilic acid—twice daily in the mornings and evenings. The duration of treatment was 4-5 days.

(4) Pain syndrome disappeared after 24-48 hours. Within the same period the swelling subsided and the appearance of new eruptions stopped. After 36-72 hours the healing and epithelization process began. No cases of a form resistant towards the treatment were observed.

(5) During the observation all patients were instructed to use the cream upon the appearance of the first prodromes (sensations of pain) that manifest before the first eruptions.

(6) The second course of treatment lasted for 2-3 days, no eruptions appeared and the unpleasant sensations were gone within 24 hours. Two patients used another second course when eruptions appeared. The duration of treatment was 3 days.

(7) In six patients with a recurring form of the herpetic infection an unexpected change of the course of the infection was observed. The chronic infection lost its recurring nature—for a prolonged period of observation (2 years) no signs of a relapse were observed; for other patients the duration of remission increased significantly, averaging 1 year 5.5 months.

Example 2. Treatment of an Extensive Form of Herpes

(8) Studies were conducted on 12 patients with an extensive form of herpes virus characterized by simultaneous emergence of several focal lesions. During a relapse all patients applied to the affected area the preparation in the form of an ointment containing 1% of the active substance twice daily in the mornings and evenings. The duration of treatment was 3-4 days.

(9) Pain syndrome disappeared after 24-48 hours. Within the same period the swelling subsided and the appearance of new eruptions stopped. After 36-72 hours the healing and epithelization process began.

(10) Upon signs of a relapse (on average, after 4-5 months) a second course of treatment was conducted during 2-3 days. After 2 years of observation 5 patients had no relapses, for other patients the average duration of remission was 14 months.

Example 3. Treatment of an Extensive Form of Herpes with Added Secondary Bacterial Infection

(11) Studies were conducted on 9 patients with an extensive form of herpes virus characterized by the addition of a secondary bacterial infection at the areas of skin damage. During a relapse all patients applied to the affected area the preparation in the form of a 1% suspension that additionally included a biocidal agent (RU 2422137 C1), twice daily in the mornings and evenings. The duration of treatment was 5 days.

(12) Pain syndrome disappeared after 24-36 hours. Within the same period the swelling subsided and the appearance of new eruptions stopped. After 36-72 hours the healing and epithelization process began. No cases of a form resistant towards the treatment were observed.

(13) All patients had signs of a relapse after an average of 4 months, after which a second course of treatment was conducted for 5 days. After its completion 5 patients had no relapses during the period of observation (2 years), for other patients the average duration of remission was 15 months.

Example 4. Treatment of a Genital Form of Herpes

(14) Studies were conducted on 16 patients with a genital form of herpes (7 men and 9 women).

(15) The method of treatment consisted in that the men applied 0.5% cream to the affected area twice daily in the mornings and evenings, whereas women used vaginal suppositories and cream. The duration of treatment was 3-4 days.

(16) Pain syndrome disappeared after 24-36 hours. Within the same period the swelling subsided and the appearance of new eruptions stopped. No cases of a form resistant towards the treatment were observed.

(17) Signs of a relapse appeared after an average of 4-5 months. A second course of treatment was conducted for 4 days. After that 6 men has no signs of a relapse during the period of observation (2 years), for one man the duration of remission was 1.5 years. After 2 years of observation 2 women had no relapses, for 7 women the average duration of remission was 12 months.

(18) Implementation of the method can combine the preparation with interferon inducers as well as other antiherpetic preparations and/or antimicrobial agents.

(19) Thus, conducting a second course of treatment according to the present invention provides a sharp increase in therapeutic efficacy, even to the extent of preventing relapse over a prolonged period of observation (possibly, a complete recovery) as a result of the effect of the preparation, upon reuse, on the viruses persisting in nerve cells; whereas second courses of treatment according to other methods have no such effect, the effectiveness of treatment during second courses is reduced because of emerging resistant forms, and the duration of remission is usually shortened.

INDUSTRIAL APPLICABILITY

(20) The invention can be implemented by means of known materials and equipment. In applicant's opinion, this enables to conclude that the invention conforms to the criterion “Industrial Applicability” (IA).