RESUMEN
BACKGROUND: Although women with vulvar vestibulitis syndrome have principal symptoms of inflammation such as local erythema and pain in the mucosa around the vaginal introitus, it is not clear if vestibulitis is an inflammatory condition. Cyclooxygenase 2 and inducible nitric oxide synthase are known to be upregulated during inflammation. The aim of the present study was to analyze the expression of these enzymes in the vestibular mucosa in order to evaluate the inflammatory activity in the tissue. METHODS: Ten women fulfilling Friedrich's criteria of vulvar vestibulitis syndrome and ten control subjects were included in the study. Punch biopsies were obtained from the vestibular mucosa for analysis of cyclooxygenas 2 and inducible nitric oxide synthase, using indirect immunohistochemistry and Western dot-blot analyses. RESULTS: Both methods used showed low expression of cyclooxygenas 2 and inducible nitric oxide synthase in the vestibular mucosa of all women. There was no difference observed between the groups. CONCLUSIONS: There is a low expression of the inflammatory markers cyclooxygenas 2 and inducible nitric oxide synthase in the vestibular mucosa of women with vulvar vestibulitis syndrome as well as in healthy control subjects. The results indicate no active inflammation present and imply that topical corticosteroids in the treatment of vulvar vestibulitis are unfounded.
Asunto(s)
Isoenzimas/biosíntesis , Óxido Nítrico Sintasa/biosíntesis , Prostaglandina-Endoperóxido Sintasas/biosíntesis , Vulvitis/enzimología , Adulto , Biopsia , Western Blotting , Ciclooxigenasa 2 , Femenino , Regulación Enzimológica de la Expresión Génica , Humanos , Inmunohistoquímica , Isoenzimas/genética , Proteínas de la Membrana , Membrana Mucosa/enzimología , Óxido Nítrico Sintasa/genética , Óxido Nítrico Sintasa de Tipo II , Prostaglandina-Endoperóxido Sintasas/genética , Vulvitis/inmunología , Vulvitis/patologíaRESUMEN
OBJECTIVE: To find a possible correlation between telomerase activity, mean telomere length and human papillomavirus (HPV) presence and type in vulvar vestibulitis. STUDY DESIGN: Twenty-two tissues excised during surgery for the treatment of severe vulvar vestibulitis and nine control tissue samples were tested for telomerase activity, mean telomere length, and HPV presence and type. RESULTS: Thirty-six percent of the tissues from vestibulitis patients were infected with HPV, mainly type 16/18, and none of the control tissue samples showed presence of HPV DNA (P < .02). Telomerase activity was detected in all tissues harboring HPV DNA, whereas only 64% of tissues without HPV DNA exhibited telomerase activity (P < .02). The mean telomere length was unchanged as compared to control samples. CONCLUSION: Telomerase activity in vestibulitis may be increased as a result of HPV infection, suggesting that HPV infection may play a role in the etiology of some cases of vulvar vestibulitis.
