ABSTRACT
BACKGROUND: High risk human papillomavirus (hrHPV) infection is associated with the development of cervical cancer (CC) in 99.7%. The prevalence of HPV varies according to the geographic region, lesion degree, method of detection, among other variables. OBJECTIVE: To determine the prevalence of hrHPV and identify some risk factors in a group of women with cervical lesions from Mexico City. MATERIAL AND METHODS: Of 421 women, 310 were included. Questionnaires of risk factors were administered, and cervical samples which included the entire spectrum of cervical lesions according to the Bethesda system were obtained. HPV genotyping was made with INNO-LiPA system. Population characteristics were analyzed with descriptive statistics. Risk factors' odds ratio (OR) was calculated with chi squared using SPSS software, version 24.0. RESULTS: 91.6% of the samples were positive for hrHPV. The prevalent types were 16, 66, 52 and 51. By age group there were not statistically significant differences in the risk of HPV infection. Having had three or more sexual partners increased the risk of infection by hrHPV (OR: 2.99; 95% confidence interval [95% CI]: 1.247.24). Sexually transmitted diseases increased the probability of infection by hrHPV different to types 16, and 18 (OR: 2.47; 95% CI, 1.24-7.24 and 1.50-4.06). CONCLUSIONS: The high prevalence of types 66, 52 and 51 is a finding that has not been described previously in our population. We hope that this study will help to improve health services in order to decrease the incidence of cervical cancer.
INTRODUCCIÓN: La infección por el virus del papiloma humano (VPH) de alto riesgo oncogénico (VPHar) se asocia al cáncer cervicouterino en el 99.7% de los casos. La prevalencia de VPH varía según la región geográfica, el grado de lesión y el método de detección, entre otras variables. OBJETIVO: Determinar la prevalencia de VPHar e identificar factores de riesgo en mujeres con lesión cervical de la Ciudad de Mexico. MATERIAL Y MÉTODOS: De 421 mujeres, se incluyeron 310. Se aplicaron cuestionarios y se obtuvieron muestras que incluyeron todo el espectro de las lesiones cervicales según el sistema Bethesda. La tipificación del VPH se hizo mediante el sistema INNO-LiPA. Las características de la población se analizaron con estadística descriptiva. Con la prueba de chi cuadrada se calculó la razón de momios (RM) de los factores de riesgo con el programa SPSS, versión 24.0. RESULTADOS: El 91.6% de las muestras fueron positivas para VPHar. Los VPH prevalentes fueron los tipos 16, 66, 52 y 51. Por edad no hubo significación estadística para riesgo de infección por VPHar. Haber tenido tres o más parejas sexuales elevó el riesgo de infección por HPVar (RM: 2.99; intervalo de confianza del 95 [IC 95%]: 1.247.24). Las infecciones de transmisión sexual favorecieron el riesgo de infección por otros VPHar distintos de los tipos 16 y 18 (RM: 2.47; IC 95%: 1.24-7.24 y 1.50-4.06). CONCLUSIÓN: La elevada prevalencia de VPH 66, 52 y 51 es un hallazgo que no ha sido descrito previamente en nuestra población. Esperamos que este estudio contribuya a mejorar los programas de los servicios de salud dirigidos a disminuir la incidencia de cáncer cervicouterino.
Subject(s)
Alphapapillomavirus , Papillomavirus Infections , Uterine Cervical Neoplasms , Female , Genotype , Humans , Mexico/epidemiology , Papillomaviridae/genetics , Papillomavirus Infections/diagnosis , Papillomavirus Infections/epidemiology , Prevalence , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/epidemiologyABSTRACT
Hyptis suaveolens is a medicinal plant that is, according to traditional medicine, considered useful in the treatment of gastric ulcers. Although its gastroprotective activity was reported, the active compounds have not been identified. Therefore, the aim of the present study was to identify at least one active compound potentially responsible for the gastroprotective activity of H. suaveolens by using a bioassay guided study with an ethanol-induced gastric ulcer experimental model in rats. The results show that the hexane extract had protective activity (close to 70% when using doses between 10 and 100 mg/kg), and that the compound suaveolol, isolated from this extract, was one of the active gastroprotective agents. This is the first report about the gastroprotective activity of suaveolol. Rats treated with this compound at 3, 10, 30 and 100 mg/kg showed 12.6, 21.3, 39.6 and 70.2% gastroprotection respectively. The effect elicited by suaveolol (at 100 mg/kg) was attenuated by pretreatment with either N(G)-nitro-L-arginine methyl ester (70 mg/kg, i.p.), a nitric oxide (NO) synthase inhibitor, indomethacin (10 mg/kg, s.c.), a blocker of prostaglandin synthesis, or N-ethylmaleimide (10 mg/kg, s.c.), a blocker of sulfhydryl groups. This suggests that the gastroprotective mechanism of action of this compound involves NO, prostaglandins and sulfhydryl groups.
