Vaginal candidiasis - a differentiated approach to therapy

The danger of candidiasis

Thrush is not a dangerous condition, since it does not relate to any particular disease and cannot affect the condition of the cervix and vaginal walls in women. The occurrence of a condition such as candidiasis indicates a disruption in the functioning of the body. Therefore, recurring thrush requires an examination to find out the cause of its occurrence. If you get rid of the cause, you can forget about the further appearance of candidiasis.

Etiology of VK

Candida spp., the causative agents of vaginal candidiasis, are opportunistic fungi that are the most common cause of fungal infections in humans. The genus Candida has about twenty species. As a rule, BK is associated with one species of Candida, but there is a probability (2-5%) of simultaneous infection with two or more species.

In Russia, the USA, Australia and Europe, Candida albicans is most often detected in women with VK (76-89%). It is followed by C. glabrata (7-16%). The percentage of non-albicans Candida ranges from 11 to 24%. Some studies have shown a trend toward an increase in the incidence of non-albicans candidiasis, but recent work by scientists in the United States involving ninety thousand samples refuted this assertion: the proportion of Candida species causing BK remained virtually unchanged from 2003 to 2007.

Etiologically, various candidiasis are clinically very similar, however, atypical pathogens are characterized by resistance to azole antimycotics. C. glabrata and C. krusei are more resistant to azole antifungal drugs than others.

CC dossier

Marina Pozdeeva

pharmacist of the first category and head of the pharmacy. Author of numerous works on pharmacology and pharmacotherapy, Dnepropetrovsk.

These data highlight the importance of identifying Candida spp. in women with a high risk of developing non-Candida albicans-associated VK in order to select effective therapy for the disease.

Causes

Reasons why thrush may occur in women:

1. pregnancy;
2. microflora disturbance;
3. weakened immunity;
4. endocrine diseases;
5. use of contraceptives;
6. failure to comply with hygiene standards.

Causes of thrush in men:

1. failure to comply with hygiene standards;
2. the result of unprotected sexual intercourse, transmission of the candida pathogen from a partner with thrush;
3. sudden change in climatic conditions;
4. use of aggressive detergents;
5. weakened immunity;
6. long-term use of antibiotics.

Symptoms

The most common symptoms of thrush in women are:

1. Pain that occurs during sexual intercourse.
2. Swelling and redness of the mucous membranes.
3. Pain with cutting when urinating.
4. Pain with the release of cheesy contents from the genital tract, without odor.
5. There is itching and burning in the vagina, which can periodically or regularly intensify during sleep, after sexual intercourse, after swimming and during menstruation.

In men, there is a burning sensation and pain during emptying of the bladder, constant or periodic itching, and a white coating on the head of the genital organ.

Risk factors

In many healthy women, VC develops sporadically. However, there are risk factors for candidiasis. Behavioral factors include frequent sexual intercourse and oral sex, as well as the use of spermicides.

Tight clothing and underwear usually do not cause illness. However, among women with recurrent VC (RVC), wearing tight tights and panty liners is positively associated with recurrence.

Biological risk factors for VC include:

• use of antibiotics;
• uncontrolled diabetes mellitus;
• genetic predisposition;
• high levels of sex hormones;
• taking oral contraceptives containing high doses of estrogen;
• pregnancy.

Antibacterial drugs help reduce the number of lacto- and bifidobacteria, a shift in pH in the vagina and the growth of Candida spp.

Tetracyclines, cephalosporins and ampicillin are more likely than other broad-spectrum antibiotics to provoke the development of candidiasis.

Pregnancy is one of the most common predisposing factors. According to studies, a third of pregnant women develop VK. High levels of sex hormones increase the glycogen content in the vagina, which in turn provides a constant source of carbon necessary for the growth of fungi.

Additionally, the increased acidity of the vaginal flora during pregnancy may inhibit the growth of other microorganisms that naturally inhibit Candida. Although the initial attachment of fungal cells occurs at higher pH values ​​(6–7), an acidic environment favors mycelial development.

In the pathogenesis of vaginal candidiasis (VC), two main phases are distinguished: the adhesion phase, that is, the attachment of fungal cells to epithelial cells, and the mycelial phase. The mycelial phase begins with the entry of Candida spp. into epithelial cells. The growing pseudomycelium of fungi penetrates into the deep layers of the cervical and vaginal epithelium.

Candida are able to penetrate cells without violating the integrity of their mannoprotein membrane (this is the fibrillar coating of the cell wall of the fungus involved in adhesion processes). As a result, Candida resists defense factors and survives in the macroorganism.

Groups at risk for infection with non-albicans Candida species include:

• women with recurrent VK;
• HIV-infected women;
• women over 50 years of age;
• women with uncontrolled diabetes.

In all of the above groups, the most common species is C. glabrata.

The percentage of cases of non-albicans Candida-associated infection increases with women's age.

Features of RVC

Most women with VK respond quickly to therapy, but some may develop a relapsing form, characterized by four or more episodes of infection per year. Predisposing factors:

• uncontrolled diabetes mellitus;
• taking immunosuppressants;
• deviations in the local vaginal immunity of the mucous membranes;
• genetic predisposition.

Studies have proven that patients with RVC have a higher frequency of specific gene polymorphisms compared to the control group. In addition, these patients have certain Lewis system antigens in their blood.

Intermittent VK may also be associated with decreased in vivo concentrations of mannose-binding lectin. The latter, by binding to sugars on the surface of the Candida cell, triggers the pathway of activation of the complement system and leads to the death of the fungus through complement-mediated phagocytosis.

With this disease, an increased concentration of interleukin-4 is also recorded, which inhibits local protective mechanisms.

The Lewis antigen system depends on a group of genes that are expressed in the glandular epithelium. Lewis antigens, unlike erythrocyte antigens, are components of exocrine epithelial secretions, including vaginal ones.

The role of sexual transmission remains unproven. However, most studies indicate the need for treatment of sexual partners. Thus, an experiment by Dr. Horowitz, UK, demonstrated the presence of Candida species in the ejaculate of men whose partners suffered from RVC.

However, the same Horowitz conducted another study, which studied the results of therapy in 54 women, divided into two groups. Partners from the first group were subjected to antifungal therapy, but those from the second were not. There were no significant differences in the rate of relapse among women in these groups.

Relapses can also be caused by other Candida species that are not equally sensitive to first-line therapy.

Diagnostics

To determine the presence of candidiasis, you will need to take a scraping and send it for further research to a laboratory to identify pathogenic microflora.

The main goal of laboratory diagnostics is to determine the presence of candida fungus. If the diagnosis is carried out in women, then the diagnosis of thrush is established only when there is a large number of yeast-like fungi, as well as additional symptoms of vaginal dysbiosis.

Candidiasis in men is diagnosed when there is a small number of fungi, which indicates the presence of infection. Severe symptoms will allow the urologist to conduct a more detailed examination.

Which doctor should I contact?

If symptoms appear that indicate candidiasis, a woman should consult a gynecologist, and a man should consult a urologist.

How to determine victory over thrush?

Photo: marymarkevich / freepik.com
Complete recovery from thrush is confirmed by several criteria. The first is clinical. This means the complete absence of any symptoms of candidiasis and its relapses for a long time, usually at least 6 months.

The second criterion is the results of a microbiological examination of the vagina, carried out 14 days after the end of treatment. This analysis is aimed at studying the microbial composition of the organ mucosa. With effective treatment, the analysis will not reveal candida or their ratio with other representatives of normal microflora will be within the acceptable norm.

Treatment

All medical procedures related to candidiasis should be carried out only under the supervision of the attending physician. If you try to treat yourself, thrush may transform into an acute form, into a chronic form, and there is also a possibility of an exacerbation of the condition, which will lead to further difficult treatment.

Treatment for thrush includes:

1. Antibiotic therapy, personal hygiene, support and protection of the immune system.
2. Adhering to a diet that will require limiting carbohydrate intake.
3. Complete cessation of bad habits.
4. Use of prescribed medications to combat thrush.

Medicines

In the treatment of thrush, which occurs in a mild stage, it will be enough to use local remedies such as vaginal ointments, suppositories and tablets. The most popular drugs include:

• Natamycin;
• Nystatin;
• Miconazole;
• Clotrimazole;
• Isoconazole;
• Ketoconazole.

Doctors most often prescribe drugs with clotrimazole, and avoid the use of vaginal tablets, as they can suppress the normal microflora of the vagina.

Experts prescribe tablets for candidiasis in more advanced cases, as well as in chronic cases of thrush. Almost all medicines have fluconazole as their active ingredient; itraconazole may be an alternative.

Compared to women, thrush in men occurs more easily, and as a treatment, an experienced specialist will prescribe local treatment in the form of ointments, which will need to be applied to the affected areas. In more severe cases, oral medications such as Diflucan and Fluconazole may be prescribed.

Suppositories Livarol

Suppositories for the treatment of fungal vulvovaginitis have ketoconazole as the active substance. This substance stops the vital activity of not only fungi, but also some bacteria, including staphylococcus and streptococcus. The substance helps well with primary infections. In the case of a chronic form of thrush, Livarol will not have the expected effect, because ketoconazole is a substance to which Candida fungi become resistant over time.

Livarol will cope with a mild form of thrush in 5 days. In special cases, the doctor may prescribe a 10-day course. The drug is sold in appropriate dosages: 5 and 10 suppositories per package.

The suppositories, once in the vagina, quickly take on a liquid form and envelop the mucous membranes of the organ. To achieve the maximum duration of contact of the substance with the contaminated surface, it is better to place suppositories at night. So that when the medicine becomes liquid, it does not leak out of the vagina.

Diet

For thrush in women, the diet plan should be based on consuming foods that have antibacterial and antifungal effects. These include:

• garlic;
• seafood;
• parsley;
• buckwheat;
• White rice;
• broccoli;
• natural yoghurts;
• oatmeal;
• cucumbers

For men, when diagnosing candidiasis, the diet should be followed for up to 12 months, the minimum is 4 months. During this time you should:

1. Avoid consumption of spicy foods and various sauces.
2. Completely abstain from alcohol for the entire period of treatment.
3. There are only low-fat dishes, those that are steamed, boiled or stewed.

Prevention

Prevention of thrush:

1. It is important to wear underwear made exclusively from natural fabrics. It should be such that it does not rub anywhere;
2. when playing sports, it is recommended to wash your sports uniform as often as possible;
3. in order to maintain hygiene of the genital organs, they should be washed only with water, using a special mild soap;
4. Hygiene products should not contain dyes or fragrances;
5. for those who suffer from diabetes, blood sugar control should be constant;
6. adhere to proper nutrition and actively walk in the fresh air to support your immune system.

Where to cure thrush in St. Petersburg

It is more difficult to cure thrush than to prevent it. Lead a healthy lifestyle, avoid casual sex and observe personal hygiene rules - these simple rules will protect you not only from thrush, but also from other sexual diseases. And if thrush still strikes, seek professional help from the doctors at the Diana Multidisciplinary Medical Center in St. Petersburg.

CLICK TO MAKE AN APPOINTMENT, TEST OR ULTRASOUND

If you find an error, please select a piece of text and press Ctrl+Enter