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1.
Rev. patol. trop ; 49(1): 11-20, 2020. ilus, graf
Artigo em Inglês | LILACS | ID: biblio-1099696

RESUMO

Bacteroides genus are commonly found on mucous membranes, including the female genital tract, acting as agents for several site infections. Anaerobic infections are usually polymicrobial and endogenous. Trichomonas vaginalis, the trichomoniasis etiologic agent, is a facultative anaerobic flagellated parasite spread worldwide. The purpose of this study was to explore the association between vaginal bacteria and T. vaginalis, as well as to understand factors that may favour the infection of T. vaginalis. We have, therefore, used T. vaginalis trophozoites and the species Bacteroides fragilis, which is considered the most important in its genus, once it is the most commonly isolated bacteria from endogenous infections. The parasite-bacteria interaction was performed in different proportions in periods varying from 1 to 12 hours applying viability tests. The data were analyzed to compare the parasite viability in vitro in the presence and absence of B. fragilis. The results indicate that in the 1:100 proportion postinteraction analysis, ultrastructural alterations were noticeable after 6 hours. After 8 hours, T. vaginalis viability decreased, and after 12 hours of interaction no viable trophozoites were found. These data suggest that the parasite can deal with B. fragilis in short interaction periods. However, in longer interaction periods the trophozoites collapse, indicating that B. fragilis may produce toxic metabolites against T. vaginalis activity.


Assuntos
Bacteroides fragilis , Trichomonas vaginalis , Técnicas In Vitro , Vaginose Bacteriana , Doenças dos Genitais Femininos
2.
Prensa méd. argent ; 105(3): 130-137, may 2019. fig, tab
Artigo em Inglês | LILACS, BINACIS | ID: biblio-1025428

RESUMO

Trichomonas vaginalis (T. vaginalis), the etiologic agent of human trichomoniasis, is a flagellated protozoan parasite, has been associated sith advese pregnancy outcomes, HIV transmission, and infertilityh. A total of one hundred and fifty-seven (157) women at childbearing age (14-49 years), were included in the presnt study, eighty six (86) symptomatic fertile while the other seventy-one (71) were infertile with or without sumptoms attending the Gynecology outpatient Department in Al-Emamayn Al-Kadhimayn Medical City, the High Institute of Infertility Diagnosis and Assisted Reproductive Technoligies at Al-Nahrain University in Baghdad, the maternity Teaching hospital, and Dr. Khawer center for infertility and IVF in Erbil province in Iraq. Two vaginal swab specimens were obtained from each of them:; one swab was immediately examined by wet mount microscopy, the other swab for molecular study (DNA extraction and p3 nested PCR). One hundred (100) samples positive in one or more test were identified: 20 (12.7%) infecions were detected by wet mount microscopy, while nested PCR was positive in 100 (63.7%) samples. These positive samples were seguenced and phylogenetic tree were done and, there was no association between the variations in glut (p3) gene of T. vaginalis isolated from infected women (fertile and infertile)


Assuntos
Humanos , Feminino , Gravidez , Adolescente , Adulto , Complicações na Gravidez/etiologia , Manejo de Espécimes/classificação , Tricomoníase/etiologia , Trichomonas vaginalis/genética , Alelos , Fertilidade , Glutaminase/genética , Infertilidade Feminina
3.
Rev. patol. trop ; 48(1): 15-24, abr. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-996653

RESUMO

Trichomoniasis is a curable sexually transmitted infection (STI) that has been reported to be linked to exposure to human immunodeficiency virus (HIV), although few studies have described this association. The purpose of this study was to focus on the incidence of trichomoniasis in low-income women, its relation to HIV status, viral load levels and TCD4+cell counts, among other risk factors, using an in vitro culture as a diagnostic test. A cross-sectional study among 267 women (103 HIV-positive and 164 HIV-negative) was conducted in 2015. The overall prevalence of Trichomonas vaginalis (TV) infection was 6.4%. Among HIV-positive and HIV-negative women, the prevalence was 3.9% and 7.9%, respectively, yet these results were not statistically different (p=0.1878). The factors associated with TV infection were cigarette smoking (OR= 3.52), vaginal itching (OR=4.43) and bacterial vaginosis (BV) (OR= 5.29). HIV status, TCD4+ cell count and viral load were not associated with TV infection in this group. The prevalence rates found, lower than those observed in other studies, may be due to the fact that the women evaluated in the present study are part of a low-risk population as well as the limited sample size of HIV positive women


Assuntos
Humanos , Feminino , Trichomonas vaginalis , Estudos Transversais , HIV
4.
DST j. bras. doenças sex. transm ; 31(3): 87-89, 30-09-2019.
Artigo em Inglês | LILACS | ID: biblio-1117883

RESUMO

Introduction: Trichomonas vaginalis (Tv) is a parasite responsible for the most frequent non-viral sexually transmitted infection and causes more than 250 million new cases around the world each year. Frequently, Tv is identified in cervical cancer screening. Objective: To assess the frequency of Tv identified on cytology between 2013 and 2018 in a private Laboratory at Fortaleza, Brazil. Methods: Cases from the files of a laboratory in Fortaleza, Brazil, were searched for diagnoses of Tv on cytology (Pap smear and SurePathTM [SP]) between 2013 and 2018, and the frequency of infection in each year, as well as differences between the years, were calculated. A linear regression test was performed to analyze the relationship between time and infection with a 95% confidence interval. The research was approved by an ethics committee. Results: The mean age of the patients was 35.9 (+12.5) years in the Pap smear group and 33.4(+11.9) years in the liquid-based cytology group. Tv was diagnosed in 281 of 207,863 patients (0.14%) (113 [0.12%] in the Pap smear group and 168 [0.15%] in SP cytology). Assessing year by year differences, it was observed that Tv was identified on cytology in 36 of 33,193 in 2013 (0.1%) (Pap smear=19/ 19,734 [0.1%]; SP=17/ 13,459 [0.13%], 50 of 34,661 in 2014 (0.14%) (Pap smear=22/ 16,358 [0.13%]; SP=28/ 18,303 [0.15%]), 34 of 33,623 in 2015 (0.1%) (Pap smear=10/ 14,501 [0.07%]; SP=24/ 19,122 [0.13%]), 29 of 34,492 in 2016 (0.1%) (Pap smear=9/ 15,629 [0.06%]; SP=20/ 18,863 [0.1%]), 52 of 35,446 in 2017 (0.15%) (Pap smear=22/ 15,948 [0.14%]; SP=30/ 19,498 [0.15%], and 80 of 36,448 in 2018 (0.22%) (Pap smear=31/ 15,408 [0.2%]; SP=49/ 21,040 [0.23%]). Conclusion: There was a tendency towards increased frequency of Tv diagnosis in the gynecologic cytology group (Pap smear or SP), mainly in the last year, reflecting what is observed using more sensitive methods.


Introdução: Trichomonas vaginalis (Tv) é um parasita responsável pela infecção sexualmente transmissível não viral mais frequente e incidindo em mais de 250 milhões de novos casos a cada ano no mundo. Frequentemente, o Tv é identificado no rastreamento citológico do câncer de colo do útero. Objetivo: Avaliar a frequência de Tv identificada por citologia entre 2013 e 2018 em um laboratório privado em Fortaleza, Brasil. Métodos: Foram pesquisados casos dos prontuários de um laboratório em Fortaleza, Brasil, para dianóstico de Tv por citologia (exame de Papanicolaou ou SurePathTM [SP]) entre 2013 e 2018, e foram calculados a frequência da infecção a cada ano bem como as diferenças entre eles. Um teste de regressão linear foi aplicado para analizar a relação entre o tempo e a infecção com intervalo de confiança de 95%. A pesquisa foi aprovada pelo comitê de ética. Resultados: A idade média das pacientes foi 35.9 (+12.5) anos na citologia convencional (CC) e 33.4 (+11.9) anos no grupo de citologia em meio líquido. Tv foi diagnosticada em 281 de 207.863 pacientes (0,14%) (113 [0,12%] no grupo de CC e 168 [0,15%] no grupo de SP). Avaliando ano a ano, foi observado que o Tv foi identificado em 36 de 33.193 em 2013 (0,1%) (CC=19/ 19.734 [0,1%]; SP=17/ 13.459 [0,13%], 50 de 34.661 em 2014 (0,14%) (CC=22/ 16.358 [0,13%]; SP=28/ 18.303 [0,15%]), 34 de 33.623 em 2015 (0,1%) (CC=10/ 14.501 [0,07%]; SP=24/ 19.122 [0,13%]), 29 de 34.492 em 2016 (0,1%) (CC=9/ 15.629 [0,06%]; SP=20/ 18.863 [0,1%]), 52 de 35.446 em 2017 (0,15%) (CC=22/ 15.948 [0,14%]; SP=30/ 19.498 [0,15%], e 80 de 36.448 em 2018 (0,22%) (CC=31/ 15.408 [0,2%]; SP=49/ 21.040 [0,23%]). Conclusão: Há a tendência de aumento na frequência de diagnóstico de Tv na citologia (Papanicolaou ou SP), principalmente no último ano, refletindo o que já tem sido observado por métodos mais sensíveis.


Assuntos
Humanos , Trichomonas vaginalis , Doenças Sexualmente Transmissíveis , Teste de Papanicolaou , Neoplasias do Colo do Útero , Biologia Celular , Infecções
5.
Mem. Inst. Oswaldo Cruz ; 112(10): 664-673, Oct. 2017. graf
Artigo em Inglês | LILACS | ID: biblio-894838

RESUMO

BACKGROUND Trichomonas vaginalis is the aetiological agent of human trichomoniasis, which is one of the most prevalent sexually transmitted diseases in humans. Iron is an important element for the survival of this parasite and the colonisation of the host urogenital tract. OBJECTIVES In this study, we investigated the effects of iron on parasite proliferation in the dynamics of pseudocyst formation and morphologically characterised iron depletion-induced pseudocysts. METHODS We performed structural and ultrastructural analyses using light microscopy, scanning electron microscopy and transmission electron microscopy. FINDINGS It was observed that iron depletion (i) interrupts the proliferation of T. vaginalis, (ii) induces morphological changes in typical multiplicative trophozoites to spherical non-proliferative, non-motile pseudocysts, and (iii) induces the arrest of cell division at different stages of the cell cycle; (iv) iron is the fundamental element for the maintenance of typical trophozoite morphology; (v) pseudocysts induced by iron depletion are viable and reversible forms; and, finally, (vi) we demonstrated that pseudocysts induced by iron depletion are able to interact with human epithelial cells maintaining their spherical forms. MAIN CONCLUSIONS Together, these data suggest that pseudocysts could be induced as a response to iron nutritional stress and could have a potential role in the transmission and infection of T. vaginalis.


Assuntos
Humanos , Trichomonas vaginalis/efeitos dos fármacos , Trichomonas vaginalis/ultraestrutura , Microscopia Eletrônica de Varredura , Quelantes/farmacologia , Células Epiteliais/microbiologia , Fatores de Tempo , Células HeLa , Ferro
6.
Mem. Inst. Oswaldo Cruz ; 111(2): 106-113, Feb. 2016. tab, graf
Artigo em Inglês | LILACS | ID: lil-772612

RESUMO

The influence of different infectious agents and their association with human papillomavirus (HPV) in cervical carcinogenesis have not been completely elucidated. This study describes the association between cytological changes in cervical epithelium and the detection of the most relevant aetiological agents of sexually transmitted diseases. Samples collected from 169 patients were evaluated by conventional cytology followed by molecular analysis to detect HPV DNA, Chlamydia trachomatis, herpes simplex virus 1 and 2,Neisseria gonorrhoeae, Mycoplasma genitalium, Trichomonas vaginalis, andTreponema pallidum, besides genotyping for most common high-risk HPV. An association between cytological lesions and different behavioural habits such as smoking and sedentariness was observed. Intraepithelial lesions were also associated with HPV and C. trachomatis detection. An association was also found between both simple and multiple genotype infection and cytological changes. The investigation of HPV and C. trachomatisproved its importance and may be considered in the future for including in screening programs, since these factors are linked to the early diagnosis of patients with precursor lesions of cervical cancer.


Assuntos
Adolescente , Adulto , Feminino , Humanos , Pessoa de Meia-Idade , Adulto Jovem , Colo do Útero/microbiologia , Chlamydia trachomatis/isolamento & purificação , DNA Viral/isolamento & purificação , Papillomaviridae/isolamento & purificação , Lesões Intraepiteliais Escamosas Cervicais/microbiologia , Neoplasias do Colo do Útero/prevenção & controle , Carcinogênese , Coinfecção , Estudos Transversais , Efeito Citopatogênico Viral , Colo do Útero/patologia , Infecções por Chlamydia/complicações , Infecções por Chlamydia/epidemiologia , Detecção Precoce de Câncer/métodos , Epitélio/virologia , Genótipo , Técnicas de Genotipagem , Herpesvirus Humano 1/isolamento & purificação , /isolamento & purificação , Tipagem Molecular , Mycoplasma genitalium/isolamento & purificação , Neisseria gonorrhoeae/isolamento & purificação , Papillomaviridae/classificação , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia , Fatores de Risco , Treponema pallidum/isolamento & purificação , Trichomonas vaginalis/isolamento & purificação , Neoplasias do Colo do Útero/microbiologia
7.
Rev. chil. infectol ; 33(1): 26-29, feb. 2016. tab
Artigo em Espanhol | LILACS | ID: lil-776956

RESUMO

Introduction: Trichomonas vaginalis, Mycoplasma hominis and Ureaplasma spp. are microorganisms responsible for genitourinary and pregnancy pathologies. Nucleic acid amplification methods have shown several advantages, but have not been widely studied for the detection of these microorganisms. Aim: To implement a conventional polymerase chain reaction (PCR) for the detection of the microorganisms and to compare its results versus the methods currently used at our laboratory. Material and Methods: 91 available samples were processed by PCR, culture (M. hominis y Ureaplasma spp.) and wet mount (T vaginalis). Results were compared and statistically analyzed by kappa agreement test. Results: 85, 80 and 87 samples resulted in agreement for the detection of M. hominis, Ureaplasma spp. y T. vaginalis, respectively. For M. hominis and Ureaplasma spp., agreement was substantial, whereas for T. vaginalis it was moderate, however, for the latter, PCR detected more cases than wet mount. Conclusion: We recommend the implementation of PCR for detection of T. vaginalis whereas culture kit is still a useful method for the other microorganisms.


Introducción: Trichomonas vaginalis, Mycoplasma hominis y Ureaplasma spp. son microorganismos causantes de patología genito-urinaria y durante el embarazo. Los métodos de amplificación de ácidos nucleicos han demostrado numerosas ventajas, pero no han sido ampliamente estudiados para la detección de estos microorganismos. Objetivo: Implementar una reacción de polimerasa en cadena convencional (RPC) para su detección y comparar sus resultados con los métodos actuales de nuestro laboratorio. Material y Métodos: Se procesaron 91 muestras mediante RPC, cultivo (M. hominis y Ureaplasma spp.) y observación microscópica al fresco (T. vaginalis). Los resultados fueron comparados y analizados estadísticamente mediante el test de concordancia kappa. Resultados: 85, 80 y 87 muestras tuvieron resultados concordantes para la detección de M. hominis, Ureaplasma spp. y T. vaginalis, respectivamente. Para M. hominis y Ureaplasma spp. el nivel de concordancia fue considerable mientras que para T. vaginalis fue moderado; sin embargo, para esta última, la RPC detectó más casos que la microscopia al fresco. Conclusión: Se recomienda la implementación de la RPC para la detección de T. vaginalis. Para M. hominis y Ureaplasma spp. el kit de cultivo continúa siendo un buen método.


Assuntos
Feminino , Humanos , Infecções por Mycoplasma/diagnóstico , Mycoplasma hominis/genética , Tricomoníase/diagnóstico , Trichomonas vaginalis/genética , Infecções por Ureaplasma/diagnóstico , Ureaplasma/genética , Mycoplasma hominis/isolamento & purificação , Pacientes Ambulatoriais , Reação em Cadeia da Polimerase , Reprodutibilidade dos Testes , Ureaplasma/isolamento & purificação
8.
Artigo em Inglês | LILACS | ID: lil-774573

RESUMO

Trichomonas vaginalis is the etiologic agent of trichomoniasis, the most common non-viral sexually transmitted disease (STD) in the world. The diagnosis is based on wet mount preparation and direct microscopy on fixed and stained clinical specimens. The aim of this study was to compare the performance of different fixing and staining techniques used in the detection of T. vaginalis in urine. The smears were fixed and submitted to different methods of permanent staining and then, the morphological aspects of the parasites were analyzed and compared. The Papanicolaou staining with ethanol as the fixative solution showed to be the best method of permanent staining. Our data suggest that staining techniques in association with wet mount examination of fresh specimens contribute to increase the sensitivity in the diagnosis of trichomoniasis.


Assuntos
Feminino , Humanos , Coloração e Rotulagem/métodos , Tricomoníase/diagnóstico , Trichomonas vaginalis/isolamento & purificação , Meios de Cultura , Sensibilidade e Especificidade , Trichomonas vaginalis/microbiologia , Esfregaço Vaginal
9.
Mem. Inst. Oswaldo Cruz ; 110(7): 877-883, Nov. 2015. tab, graf
Artigo em Inglês | LILACS | ID: lil-764587

RESUMO

Trichomonas vaginalis is a flagellate protozoan that parasitises the urogenital human tract and causes trichomoniasis. During the infection, the acquisition of nutrients, such as iron and purine and pyrimidine nucleosides, is essential for the survival of the parasite. The enzymes for purinergic signalling, including adenosine deaminase (ADA), which degrades adenosine to inosine, have been characterised in T. vaginalis. In the evaluation of the ADA profile in different T. vaginalisisolates treated with different iron sources or with limited iron availability, a decrease in activity and an increase in ADA gene expression after iron limitation by 2,2-bipyridyl and ferrozine chelators were observed. This supported the hypothesis that iron can modulate the activity of the enzymes involved in purinergic signalling. Under bovine serum limitation conditions, no significant differences were observed. The results obtained in this study allow for the assessment of important aspects of ADA and contribute to a better understanding of the purinergic system in T. vaginalis and the role of iron in establishing infection and parasite survival.


Assuntos
Animais , Bovinos , Feminino , Humanos , Adenosina Desaminase/metabolismo , Quelantes de Ferro/farmacologia , Trichomonas vaginalis/efeitos dos fármacos , Trichomonas vaginalis/enzimologia , Adenosina Desaminase/efeitos dos fármacos , Regulação Enzimológica da Expressão Gênica , Proteínas de Protozoários/genética , Proteínas de Protozoários/metabolismo , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Trichomonas vaginalis/crescimento & desenvolvimento
10.
Femina ; 43(5): 209-214, set.-out. 2015. tab, ilus
Artigo em Português | LILACS | ID: lil-771216

RESUMO

A correlação entre Trichomonas vaginalis (T. vaginalis) e o desenvolvimento do câncer cervical foi estabelecida. Uma revisão sistemática baseada em artigos originais (padrão ouro) foi conduzida a partir de duas importantes bases eletrônicas: PubMed e MEDLINE. A partir das bases de dados Medical Subject Headings (MeSH) e Descritores em Ciências da Saúde (DeCS) os seguintes termos "T. vaginalis & uterine cervical neoplasms" e "T. vaginalis & signal transduction" foram buscados. Critérios de inclusão e exclusão foram estabelecidos considerando as características específicas de cada artigo visando garantir a qualidade dos artigos selecionados (testes de relevância 1 e 2). Com relação aos efeitos patogênicos de T. vaginalis, o teste de relevância 1 selecionou 13 artigos de ambas as bases, PubMed e MEDLINE, enquanto o teste de relevância 2 finalizou com 8 artigos. Os estudos selecionados demonstraram correlação entre T. vaginalis e neoplasia cervical, apontando os efeitos citopatogênicos do parasito e enfatizando a importância das vias de sinalização, tais como as proteínas mitógenoativadas (MAPK).(AU)


A correlation between Trichomonas vaginalis (T. vaginalis) and the development of cervical cancerwas investigated. A systematic review based on original articles (the gold standard) was conducted by performing a search of two major electronic databases, PubMed and MEDLINE. The search was performed by using the exploded MeSH and DeCS terms "T. vaginalis & uterine cervical neoplasms" and "T. vaginalis & signal transduction". Inclusion and exclusion criteria were assessed using specific characteristics to determine whether the quality of each article was high enough to warrant selection (the first and second tests of relevance). With reference to the cytopathogenic effects of T. vaginalis, the first test of relevance selected13 articles from both databases, PubMed and MEDLINE, whereas the second test of relevance selected8 articles. The studies selected showed a correlation between T. vaginalis and cervical neoplasia, demonstrating the cytopathogenic effects of the parasite and highlighting the importance of cell signaling pathways such as the mitogen-activated protein kinase (MAPK) pathway.(AU)


Assuntos
Humanos , Feminino , Trichomonas vaginalis/patogenicidade , Vaginite por Trichomonas/diagnóstico , Neoplasias Uterinas/etiologia , Transdução de Sinais , Bases de Dados Bibliográficas , Técnicas Histológicas , Teste de Papanicolaou
11.
Rev. chil. infectol ; 32(1): 41-47, feb. 2015. graf, tab
Artigo em Espanhol | LILACS | ID: lil-742534

RESUMO

Background: Vaginal infections are a frequent cause for consultation, but their prevalence and etiology vary in different populations. Objectives: To determine the prevalence and etiologies of vaginal infection in women attending a family health center in the Metropolitan Region of Chile. Methods: The microbiological diagnosis was made by wet mount and Gram stain. Diagnosis of trichomoniasis was performed by wet mount, culture and polymerase chain reaction. Results: 101 women aged 15-54, not selected by signs or symptoms of vaginal infection, 46 of them pregnant were included. In 47 women (46.5%), vaginal infections were diagnosed. An association was observed between age and frequency of vaginal infection. The proportion of infections among pregnant and non-pregnant women was similar. The most frequent infections were bacterial vaginosis (16.8%), vulvovaginal candidiasis (11.9%) and co-infections (6.9%). We found 5.9% of intermediate microbiota cases, 3% of trichomoniasis and 2% of aerobic vaginitis. Symptoms of vaginal infection had poor agreement with microbiological findings. Otherwise physical signs had good agreement with the presence of infection, but low to moderate concordance with a specific etiology. Conclusions: We found a high prevalence of vaginal infections in the study population. It is necessary to improve the definitions and criteria of microbiological diagnosis of co-infections and intermediate microbiota, for them to be diagnosed in the clinical practice. More descriptive questionnaires are recommended to enhance the usefulness of clinical examination.


Introducción: Las infección vaginales constituyen un motivo frecuente de consulta, pero su prevalencia y etiología varían en distintas poblaciones. Objetivos: Determinar la prevalencia y tipos de infección vaginal en mujeres atendidas en un centro de salud familiar de la Región Metropolitana. Métodos: El diagnóstico microbiológico fue efectuado mediante examen microscópico al fresco y tinción de Gram y para tricomoniasis examen al fresco, cultivo y reacción de la polimerasa en cadena. Resultados: Se incluyeron 101 mujeres de 15-54 años, no seleccionadas por signos ó síntomas, 46 de ellas embarazadas. En 47 mujeres (46,5%) se diagnosticaron infecciones vaginales. Se observó asociación entre edad y frecuencia de infección vaginal. La proporción de infecciones entre gestantes y no gestantes fue similar. Las infecciones más frecuentes fueron vaginosis bacteriana (16,8%), candidiasis vulvo-vaginal (11,9%) y co-infecciones (6,9%). Se observó 5,9% casos de microbiota intermedia, 3% de tricomoniasis y 2% de vaginitis aeróbica. Los síntomas de infección vaginal tuvieron mala concordancia con los hallazgos microbiológicos. A su vez, los signos físicos tuvieron buena concordancia con la existencia de infección, pero escasa a moderada concordancia con una etiología específica. Conclusiones: Se encontró alta frecuencia de infecciones vaginales. Es necesario mejorar las definiciones y criterios de diagnóstico microbiológico de las co-infecciones y microbiota intermedia, para ser diagnosticadas en la práctica clínica. Se recomienda emplear cuestionarios más descriptivos para mejorar la utilidad del examen clínico.


Assuntos
Adolescente , Adulto , Feminino , Humanos , Pessoa de Meia-Idade , Gravidez , Adulto Jovem , Complicações Infecciosas na Gravidez/microbiologia , Atenção Primária à Saúde/estatística & dados numéricos , Trichomonas vaginalis/isolamento & purificação , Vaginose Bacteriana/microbiologia , Distribuição por Idade , Coinfecção , Estudos Transversais , Candidíase Vulvovaginal/epidemiologia , Candidíase Vulvovaginal/microbiologia , Chile/epidemiologia , Reação em Cadeia da Polimerase , Prevalência , Complicações Infecciosas na Gravidez/epidemiologia , Trichomonas vaginalis/microbiologia , Vaginose Bacteriana/epidemiologia
12.
Med. lab ; 21(9-10): 455-464, 2015. graf, tab
Artigo em Espanhol | LILACS | ID: biblio-907790

RESUMO

Introducción: el uso del dispositivo intrauterino incrementa el riesgo de algunas infecciones genitales. Objetivo: determinar la prevalencia de vaginosis bacteriana, Actinomyces spp., Candida spp. y Trichomonasvaginalis en usuarias del dispositivo intrauterino. Materiales y métodos: se realizó un estudio transversal en usuarias del dispositivo intrauterino, atendidas en un programa de tamización de cáncercérvico-uterino en Medellín, Colombia, entre 2011 y 2013. Se empleó una fuente de información secundaria basada en los registros citológicos del laboratorio clínico, se calculó la prevalencia global de las cuatro infecciones y las prevalencias específicas según grupo etario y sector de residencia, con un intervalo de confianza del 95%. La exploración de asociaciones se hizo con la prueba chi cuadrado de Pearson. Resultados: Se registraron 12.541 usuarias del dispositivo intrauterino de 10 comunas de Medellín. La edad promedio fue 34,0±9,8 años; el 50% de los valores centrales estuvo entre 26 y 41 años. Las prevalencias de infecciones vaginales fueron: vaginosis bacteriana 25,6%, Actinomyces spp. 8,9%, Candida spp. 5,1% y Trichomonas vaginalis 1,2%. La prevalencia de vaginosisbacteriana y Candida spp. fue estadísticamente mayor en adolescentes y jóvenes. La prevalencia de las cuatro infecciones fue estadísticamente diferente según el sector de residencia. Conclusión: en usuarias del dispositivo intrauterino las principales infecciones genitales son vaginosis bacteriana y Actinomyces spp., las adolescentes y jóvenes son los grupos de mayor riesgo para vaginosis bacterianay Candida spp. y la ocurrencia de infecciones varía entre los sectores de la ciudad; información relevante para la planeación de programas de prevención y atención.


Introduction: the use of intrauterine device increases the risk of genital infections. Objective: To determine the prevalence of bacterial vaginosis, Actinomyces spp., Candida spp., and Trichomonas vaginalis in intrauterine device users. Material and methods: A cross-sectional study was performed in intrauterine device users attended in a screening program for cervical cancer in Medellín, Colombia, between 2011 and 2013. A source of information was secondary, based on the records of the clinical laboratory of cytology. The overall prevalence of the four infections and specific prevalence by age group and residence area was calculated, all with confidence intervals of 95%. To explore associationsPearson chi-square test was used. Results: It was registered 12,541 users of the intrauterine device from 10 districts of Medellin. The users mean age was 34.0±9.8 years; 50% of the central values was between 26 and 41 years. The prevalence of vaginal infections were: bacterial vaginosis 25.6%, Actinomyces spp. 8.9%, Candida spp. 5.1% and Trichomonas vaginalis 1.2%. The prevalence of bacterial vaginosis and Candida spp. was statistically higher in adolescents and youth. The prevalenceof the four infections was statistically different according to the residence sector.Conclusion: in intrauterine devices users the major genital infections are bacterial vaginosis and Actinomycesspp. Adolescents and young people are the groups most at risk for bacterial vaginosis and Candida spp. and the occurrence of infections varies between sectors of the city; information that is relevant for planning prevention and care programs.


Assuntos
Humanos , Actinomyces , Candida , Dispositivos Intrauterinos , Trichomonas vaginalis , Vaginose Bacteriana
13.
Med. lab ; 21(09/10): 455-464, 2015. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-884499

RESUMO

Introducción: el uso del dispositivo intrauterino incrementa el riesgo de algunas infecciones genitales. Objetivo: determinar la prevalencia de vaginosis bacteriana, Actinomyces spp., Candida spp. y Trichomonas vaginalis en usuarias del dispositivo intrauterino. Materiales y métodos: se realizó un estudio transversal en usuarias del dispositivo intrauterino, atendidas en un programa de tamización de cáncer cérvico-uterino en Medellín, Colombia, entre 2011 y 2013. Se empleó una fuente de información secundaria basada en los registros citológicos del laboratorio clínico, se calculó la prevalencia global de las cuatro infecciones y las prevalencias específicas según grupo etario y sector de residencia, con un intervalo de confianza del 95%. La exploración de asociaciones se hizo con la prueba chi cuadrado de Pearson. Resultados: Se registraron 12.541 usuarias del dispositivo intrauterino de 10 comunas de Medellín. La edad promedio fue 34,0±9,8 años; el 50% de los valores centrales estuvo entre 26 y 41 años. Las prevalencias de infecciones vaginales fueron: vaginosis bacteriana 25,6%, Actinomyces spp. 8,9%, Candida spp. 5,1% y Trichomonas vaginalis 1,2%. La prevalencia de vaginosis bacteriana y Candida spp. fue estadísticamente mayor en adolescentes y jóvenes. La prevalencia de las cuatro infecciones fue estadísticamente diferente según el sector de residencia. Conclusión: en usuarias del dispositivo intrauterino las principales infecciones genitales son vaginosis bacteriana y Actinomyces spp., las adolescentes y jóvenes son los grupos de mayor riesgo para vaginosis bacteriana y Candida spp. y la ocurrencia de infecciones varía entre los sectores de la ciudad; información relevante para la planeación de programas de prevención y atención. (AU)


Introduction: The use of intrauterine device increases the risk of genital infections. Objective: To determine the prevalence of bacterial vaginosis, Actinomyces spp., Candida spp., and Trichomonas vaginalis in intrauterine device users. Material and methods: A cross-sectional study was performed in intrauterine device users attended in a screening program for cervical cancer in Medellín, Colombia, between 2011 and 2013. A source of information was secondary, based on the records of the clinical laboratory of cytology. The overall prevalence of the four infections and specific prevalence by age group and residence area was calculated, all with confidence intervals of 95%. To explore associations Pearson chi-square test was used. Results: It was registered 12,541 users of the intrauterine device from 10 districts of Medellin. The users mean age was 34.0±9.8 years; 50% of the central values was between 26 and 41 years. The prevalence of vaginal infections were: bacterial vaginosis 25.6%, Actinomyces spp. 8.9%, Candida spp. 5.1% and Trichomonas vaginalis 1.2%. The prevalence of bacterial vaginosis and Candida spp. was statistically higher in adolescents and youth. The prevalence of the four infections was statistically different according to the residence sector. Conclusion: in intrauterine devices users the major genital infections are bacterial vaginosis and Actinomyces spp. Adolescents and young people are the groups most at risk for bacterial vaginosis and Candida spp. and the occurrence of infections varies between sectors of the city; information that is relevant for planning prevention and care programs. (AU)


Assuntos
Humanos , Prevalência , Actinomyces , Candida , Dispositivos Intrauterinos , Trichomonas vaginalis , Vaginose Bacteriana
14.
DST j. bras. doenças sex. transm ; 27(3-4): 86-91, 2015.
Artigo em Inglês | LILACS | ID: biblio-1025

RESUMO

Trichomoniasis is a cosmopolitan disease that can affect the female fertility, and is commonly underdiagnosed, both in private practices and in public health services, because of the low sensitivity of the wet mount exam used routinely. Objective: To understand the occurrence of T. vaginalis infection by means of in vitro culture in women receiving care in a public health unit, in the city of Pelotas, Rio Grande do Sul, Brazil, as well as to identify the possible risk factors associated with this infection. Methods: Cross­sectional study was carried out, which included 201 women undergoing interview and gynecological exam, with the collection of vaginal discharge in the Gynecology Ambulatory at the School of Medicine of Universidade Federal de Pelotas. The material collected was examined in the form of fresh smears and cultivated in Diamond's medium. Epidemiological data were obtained by means of patient interviews and clinical trials, from the medical records. The results were statistically analyzed through χ 2 and Fisher's exact tests, using version 9.0 of the Statistix program. Results: The occurrence of T. vaginalis infection was 7% (14/201). In the wet mount exam, used routinely for the diagnosis of this agent, only 42.85% of the infected women (6/14) were positive. It was noted that 21.4% of the infected women were asymptomatic, and 89.05% were not aware of the existence of the Trichomonas vaginalis infection. Factors independently associated with the infection were the smoking habit (odds ratio [OR] = 11.8), not having a stable sexual partner (OR = 6.36), presence of vaginal discharge with odor (OR = 5.65), and altered vaginal microbiota (OR = 5.31). Conclusion : T. vaginalis infection was present among the women studied, being underestimated because of the diagnostic technique, and because many of them were asymptomatic. The smoking habit, not having a stable sexual partner, having fetid discharge, and altered vaginal microbiota are the risk factors for infection.


A tricomoníase é cosmopolita, pode afetar a fertilidade feminina, e geralmente é subdiagnosticada, tanto em consultórios particulares, quanto em serviços públicos, devido à baixa sensibilidade do exame a fresco, usado rotineiramente. Objetivo: Conhecer a ocorrência de infecção por Trichomonas vaginalis , através de cultivo in vitro , em mulheres atendidas em unidade pública, na cidade de Pelotas, Rio Grande do Sul, além de identificar os possíveis fatores de risco associados a essa infecção. Métodos: Estudo de corte transversal que incluiu 201 mulheres, submetidas a entrevista e exame ginecológico, com coleta de conteúdo vaginal, no Ambulatório de Ginecologia da Faculdade de Medicina da Universidade Federal de Pelotas. O material coletado foi examinado a fresco e cultivado em meio de Diamond. Foram obtidos dados epidemiológicos através de entrevista, e clínicos, nos prontuários. Os resultados foram analisados estatisticamente através dos testes do χ 2 e exato de Fisher, utilizando o programa Statistix versão 9.0. Resultados: A ocorrência da infecção por T. vaginalis foi de 7% (14/201). No exame a fresco, usado como rotina para o diagnóstico desse agente, apenas 42,85% das infectadas (6/14) foram positivas. Constat ou­se que 21,4% das mulheres infectadas são assintomáticas, e que 89,05% desconhecia a existência da tricomoníase. Os fatores independent emente associados com a infecção foram o hábito de fumar (OR=11,8), não ter companheiro fixo (OR=6,36), apresentar corrimento vaginal fétido (OR=5,65) e microbiota vaginal alterada (OR=5,31). Conclusão: A infecção por T. vaginalis está presente entre as mulheres estudadas, e sendo subestimada, devido à técnica de diagnóstico e por muitas serem assintomáticas. O hábito de fumar, não ter companheiro fixo, ter corrimento fétido e microbiota vaginal alterada são fatores de risco para a infecção.


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Fatores de Risco , Tricomoníase/diagnóstico , Trichomonas vaginalis , Estudos Transversais
15.
Rev. argent. microbiol ; 46(3): 182-187, oct. 2014. tab
Artigo em Espanhol | LILACS | ID: lil-734580

RESUMO

Durante el embarazo se producen frecuentemente infecciones del tracto genital inferior asociadas a complicaciones maternas y perinatológicas. El objetivo del trabajo fue evaluar la disfunción vaginal mediante el análisis de los estados vaginales básicos (EVB) por la metodología del balance del contenido vaginal (BACOVA) y compararlo con el estudio microbiológico convencional en el diagnóstico de candidiasis, tricomonosis y vaginosis bacteriana (VB). Entre 2010 y 2012 se estudiaron 1238 pacientes embarazadas; 1046 eran asintomáticas (A) y 192 sintomáticas (S). La prevalencia del EVB I fue del 59,5 % y 26 %, respectivamente. El EVB II se observó en 19,7 % de las mujeres A y en 17,2 % de las S. El EVB III se detectó solamente en las A, en 0,4 %. El EVB IV se observó en 14,4 % de las A y en 38 % de las S. El EVB V se detectó en 6 % de las A y en 18,8 % de las S. En las mujeres A, las levaduras se asociaron a los EVB I y II en el 55,5 % y 23,2 % de los casos, respectivamente; entre las S, alcanzaron el 32,4 % y 31 % de los casos, en igual orden. Las tricomonas se asociaron al EVB I en el 50 % de las A, al EVB IV en el 44,4 % de las S y al EVB V en el 33,3 % de las S. La sensibilidad del BACOVA para detectar levaduras fue 80,4 % en las A y 85,5 % en las S; para detectar tricomonas, del 40 % y 75 %, y para detectar VB, del 100 % en los dos grupos. La especificidad del BACOVA fue 100 % para todos los patógenos en las A y en las S. El estudio de los EVB resultó útil para orientar el diagnóstico a la disfunción vaginal, independientemente de la sintomatología, por lo que se sugiere este estudio como parte del control prenatal. Durante el embarazo se producen frecuentemente infecciones del tracto genital inferior asociadas a complicaciones maternas y perinatológicas. El objetivo del trabajo fue evaluar la disfunción vaginal mediante el análisis de los estados vaginales básicos (EVB) por la metodología del balance del contenido vaginal (BACOVA) y compararlo con el estudio microbiológico convencional en el diagnóstico de candidiasis, tricomonosis y vaginosis bacteriana (VB). Entre 2010 y 2012 se estudiaron 1238 pacientes embarazadas; 1046 eran asintomáticas (A) y 192 sintomáticas (S). La prevalencia del EVB I fue del 59,5 % y 26 %, respectivamente. El EVB II se observó en 19,7 % de las mujeres A y en 17,2 % de las S. El EVB III se detectó solamente en las A, en 0,4 %. El EVB IV se observó en 14,4 % de las A y en 38 % de las S. El EVB V se detectó en 6 % de las A y en 18,8 % de las S. En las mujeres A, las levaduras se asociaron a los EVB I y II en el 55,5 % y 23,2 % de los casos, respectivamente; entre las S, alcanzaron el 32,4 % y 31 % de los casos, en igual orden. Las tricomonas se asociaron al EVB I en el 50 % de las A, al EVB IV en el 44,4 % de las S y al EVB V en el 33,3 % de las S. La sensibilidad del BACOVA para detectar levaduras fue 80,4 % en las A y 85,5 % en las S; para detectar tricomonas, del 40 % y 75 %, y para detectar VB, del 100 % en los dos grupos. La especificidad del BACOVA fue 100 % para todos los patógenos en las A y en las S. El estudio de los EVB resultó útil para orientar el diagnóstico a la disfunción vaginal, independientemente de la sintomatología, por lo que se sugiere este estudio como parte del control prenatal.


Infections of the lower genital tract associated to maternal and perinatal complications frequently occur during pregnancy. The aim of this study was to evaluate vaginal dysfunction through the analysis of basic vaginal states (BVS) using the methodology of balance of the vaginal content (BAVACO) and to compare it with the microbiological study of candidiasis, trichomoniasis and bacterial vaginosis (BV). Pregnant patients (1238) were examined from 2010 to 2012. In asymptomatic (A) (n: 1046) and symptomatic pregnant women (S) (n: 192) BVS I was 59.5% and 26% of the patients, respectively. BVS II was observed in 19.7% of A and in 17.2% of S. BVS III was only detected in A in 0.4%. BVS IV was observed in 14.4% of A and in 38% of S. BVS V was detected in 6% of A and in 18.8% of S. Yeasts were associated to BVS I and II in 55.5% and 23.2% of A, respectively; and in 32.4% and 31% of S, respectively. Trichomonas were associated to BVS I in 50% of A, to IV in 44.4% of S and to V in 33.3% of S. BAVACO susceptibility to detect yeasts was 80.4% and 85.5% in A and S, respectively; 40% and 75% in A and S, respectively, to detect trichomonas and 100% in A and S to detect BV. BAVACO specificity was 100% for all pathogens in A and S. The study of BVS proved useful as a guide to evaluate vaginal dysfunction, regardless of symptomatology. Therefore, this study is recommended as prenatal control. Infections of the lower genital tract associated to maternal and perinatal complications frequently occur during pregnancy. The aim of this study was to evaluate vaginal dysfunction through the analysis of basic vaginal states (BVS) using the methodology of balance of the vaginal content (BAVACO) and to compare it with the microbiological study of candidiasis, trichomoniasis and bacterial vaginosis (BV). Pregnant patients (1238) were examined from 2010 to 2012. In asymptomatic (A) (n: 1046) and symptomatic pregnant women (S) (n: 192) BVS I was 59.5% and 26% of the patients, respectively. BVS II was observed in 19.7% of A and in 17.2% of S. BVS III was only detected in A in 0.4%. BVS IV was observed in 14.4% of A and in 38% of S. BVS V was detected in 6% of A and in 18.8% of S. Yeasts were associated to BVS I and II in 55.5% and 23.2% of A, respectively; and in 32.4% and 31% of S, respectively. Trichomonas were associated to BVS I in 50% of A, to IV in 44.4% of S and to V in 33.3% of S. BAVACO susceptibility to detect yeasts was 80.4% and 85.5% in A and S, respectively; 40% and 75% in A and S, respectively, to detect trichomonas and 100% in A and S to detect BV. BAVACO specificity was 100% for all pathogens in A and S. The study of BVS proved useful as a guide to evaluate vaginal dysfunction, regardless of symptomatology. Therefore, this study is recommended as prenatal control.


Assuntos
Feminino , Humanos , Gravidez , Candidíase Vulvovaginal/microbiologia , Complicações Infecciosas na Gravidez/microbiologia , Vaginite por Trichomonas/microbiologia , Vagina/microbiologia , Vaginose Bacteriana/microbiologia , Doenças Assintomáticas , Candidíase Vulvovaginal/epidemiologia , Bactérias Gram-Negativas/isolamento & purificação , Contagem de Leucócitos , Microbiota , Valor Preditivo dos Testes , Estudos Prospectivos , Complicações Infecciosas na Gravidez/epidemiologia , Sensibilidade e Especificidade , Coloração e Rotulagem/métodos , Vaginite por Trichomonas/epidemiologia , Trichomonas vaginalis/isolamento & purificação , Vaginose Bacteriana/epidemiologia , Leveduras/isolamento & purificação
16.
Iatreia ; 27(2): 198-205, Apr.-June 2014.
Artigo em Espanhol | LILACS | ID: lil-774823

RESUMO

La tricomoniasis es responsable hasta del 30% de las infecciones de transmisión sexual no virales. La mayor frecuencia es en mujeres de 16 a 35 años. Puede ser asintomática, lo que facilita su transmisión. El agente etiológico es el protozoo Trichomonas vaginalis, transmitido casi siempre por contacto sexual. Se presenta una revisión que incluye los siguientes aspectos: epidemiología, taxonomía, fisiopatología, hábitat y ciclo de vida, sintomatología y complicaciones, métodos diagnósticos, tratamiento y relación entre Trichomonas vaginalis, VIH, virus del papiloma humano y Mycoplasma hominis.


Worldwide, trichomoniasis is the most widespread non-viral sexually transmitted infection; it causes up to 30% of such infections. The highest incidence occurs among women 16 to 35 years old. It may be asymptomatic, which facilitates transmission. Its etiologic agent is the protozoan parasite Trichomonas vaginalis, usually transmitted by sexual contact. This review includes the following aspects: epidemiology, taxonomy, physiopathology, habitat and life cycle, symptomatology, diagnostic methods, treatment, and relationship with VIH, PVH and Mycoplasma hominis infections.


Assuntos
Feminino , Doenças Sexualmente Transmissíveis , Trichomonas vaginalis , Tricomoníase/diagnóstico , Tricomoníase/etiologia , Tricomoníase/transmissão
17.
Iatreia ; 27(2): 198-205, Apr.-June 2014. ilus
Artigo em Espanhol | LILACS, COLNAL | ID: lil-712470

RESUMO

La tricomoniasis es responsable hasta del 30% de las infecciones de transmisión sexual no virales. La mayor frecuencia es en mujeres de 16 a 35 años. Puede ser asintomática, lo que facilita su transmisión. El agente etiológico es el protozoo Trichomonas vaginalis, transmitido casi siempre por contacto sexual. Se presenta una revisión que incluye los siguientes aspectos: epidemiología, taxonomía, fisiopatología, hábitat y ciclo de vida, sintomatología y complicaciones, métodos diagnósticos, tratamiento y relación entre Trichomonas vaginalis, VIH, virus del papiloma humano y Mycoplasma hominis.


Worldwide, trichomoniasis is the most widespread non-viral sexually transmitted infection; it causes up to 30% of such infections. The highest incidence occurs among women 16 to 35 years old. It may be asymptomatic, which facilitates transmission. Its etiologic agent is the protozoan parasite Trichomonas vaginalis, usually transmitted by sexual contact. This review includes the following aspects: epidemiology, taxonomy, physiopathology, habitat and life cycle, symptomatology, diagnostic methods, treatment, and relationship with VIH, PVH and Mycoplasma hominis infections.


Assuntos
Humanos , Doenças Sexualmente Transmissíveis , Tricomoníase , Trichomonas vaginalis
18.
Femina ; 42(3): 129-134, maio-jun. 2014. ilus
Artigo em Português | LILACS | ID: lil-749129

RESUMO

Trichomonas vaginalis é um agente infectante da microbiota vaginal que vem sendo correlacionado ao câncer cervical. Um receptor denominado alectina-1 (Gal 1) pode ser expresso em células epiteliais cervicais humanas se ligando à glicofosfolipídica (LPG) de T. vaginalis. A interação de T. vaginalis com as células epiteliais é mediada por cadeias galactose e N-acetilglucosamina (LacNac). Gal 1 se liga aos sítios poly-LacNAC e está relacionada com a aderência de T. vaginalis à célula humana. A sinalização ocorre por intermédio de sítios da proteína Src (SH2) que se associam, ocorrendo sob os domínios de PI3K que fosforilam a membrana de lípides fosfatidilinositol (PIP e PIP2). Aderindo-se às membranas citoplasmáticas e secretando enzimas, T. vaginalis pode ocasionar a ruptura do envoltório celular podendo fagocitar células epiteliais em meio vaginal. O núcleo N-acetilactosamina de Gal 1 pode mediar a regulação do crescimento celular com a ajuda da proteína GRB2; entretanto, Gal 1 pode contribuir para a supressão da inflamação por meio da indução de apoptose pelas células T ativadas. (AU)


Trichomonas vaginalis is an infectious agent of the vaginal flora which has been associated with cervical cancer. Galectin-1 (Gal 1) is a cell receptor expressed in cervical epithelial cells binding T. vaginalis? lipophosphoglican (LPG). Interaction between T. vaginalis and the epithelial cell is mediated by poly-LacNac domains (galactoside and acetil-lactosamin) and is related to cell adherence as well. Cell signaling occurs by the time Src (SH2) domains are correlated with this interaction and PI3K phosphorilation brings up phosphatidil inositol lipid membranes (PIP and PIP2). T. vaginalis adheres to cytoplasm membrane and secrets specific enzymes that probably lead to membrane rupture. Moreover this parasite may phagocyte epithelial cells in vaginal discharge. Gal 1 nucleus called N-acetil-lactosamin can mediate growth development through GRB2 protein and may contribute to inflammation suppression owing to apoptosis induction of activated T cells.(AU)


Assuntos
Humanos , Feminino , Trichomonas vaginalis/citologia , Trichomonas vaginalis/fisiologia , Trichomonas vaginalis/patogenicidade , Transdução de Sinais , Neoplasias do Colo do Útero/parasitologia , Galectina 1 , Fator de Crescimento Derivado de Plaquetas , Fatores Epidemiológicos , Apoptose , Proteína Ligante Fas
19.
Sci. med ; 24(1)jan-mar/2014. graf
Artigo em Português | LILACS | ID: lil-729178

RESUMO

Objetivos: Avaliar a atividade anti-Trichomonas vaginalis do extrato de folhas de videira (Vitis labrusca) provenientes de cultivo convencional e orgânico.Métodos: Extratos de folhas secas de videira, orgânico e convencional, foram elaborados com extrator Sohxlet. A composição fenólica total dos extratos foi avaliada por Folin-Cicoalteau e Cromatografia Líquida de Alta Eficiência. A atividade antiparasitária dos extratos foi realizada em cultura de T. vaginalis. Os testes foram realizados em três concentrações finais: 5, 10 e 20 mg/mL. Os trofozoítos foram contados em hemocitômetro e sua densidade foi ajustada em meio de cultura Trypticase-Yeast Extract-Maltose (TYM), de forma a se obter a concentração final de 1×105 trofozoítos/mL. Após incubação com os extratos por 24 horas a 37°C, foi feita a contagem dos trofozoítos com motilidade em hemocitômetro. Os controles do veículo foram realizados, adicionando-se água em substituição aos extratos.Resultados: O extrato de folhas convencionais é rico em catequina e os orgânicos, em resveratrol. Os extratos de V. labrusca não apresentaram atividade anti-T. vaginalis nas concentrações de 5 e 10 mg/mL. Entretanto na concentração de 20 mg/L, o extrato de folhas secas convencionais reduziu em 100% e o extrato orgânico em 48% a sobrevivência dos trofozoítos. Os polifenóis catequina, quercetina e rutina estavam em maior concentração no extrato com maior eficácia, os quais podem ser os responsáveis pela ação anti-T. vaginalis do extrato convencional.Conclusões: O extrato de folha de videira pode ser uma alternativa no combate a T. vaginalis. Estudos pré-clínicos e clínicos são necessários para comprovar eficácia e segurança desta intervenção...


AIMS: To evaluate the anti-Trichomonas vaginalis activity of the extract of organic and conventional leaves of Vitis labrusca.METHODS: Organic and conventional grapevine leaf extracts were prepared with extractor Sohxlet. The total phenolic extracts were evaluated by Folin-Cicoalteau and High-Performace Liquid Chromatography. The antiparasitic activity of the extracts was performed on growth of T. vaginalis. Tests were conducted at three final concentrations of 5, 10 and 20 mg/mL. The trophozoites were counted by hemocytometer and their density was adjusted in Trypticase-Yeast Extract-Maltose (TYM) growth environment in order to obtain a final concentration of 1x105 trophozoites/ml. After incubated with the extracts for 24 hours at 37 �C, the count of motile trophozoites was taken by hemocytometer. The vehicle controls were performed by substituting the extract by water.RESULTS: The conventional leaf extract is rich in catechin and the organic in resveratrol. The extracts of V. labrusca showed no anti-T.vaginalis activity at concentrations of 5 and 10 mg/mL. However in the concentration of 20 mg/L conventional grapevine leaf extracts reduced by 100% and the organic extract by 48% the survival of trophozoites. Catechin polyphenols, quercetin and rutin were in higher concentration in the extract with greater efficacy, which may be the responsible for the anti-T. vaginalis action of the conventional extract.CONCLUSIONS: The vine leaf extract may be an alternative to combat T. vaginalis. Pre-clinical and clinical studies are needed to confirm efficacy and safety of this intervention...


Assuntos
Humanos , Antitricômonas , Infecções , Compostos Fenólicos , Tricomoníase , Trichomonas vaginalis , Vitis
20.
Mem. Inst. Oswaldo Cruz ; 108(1): 110-112, Feb. 2013. ilus, graf
Artigo em Inglês | LILACS | ID: lil-666053

RESUMO

Trichomonas vaginalis and Tritrichomonas foetus are parasitic protists of the human and bovine urogenital tracts, respectively. Several studies have described the cytotoxic effects of trichomonads on urogenital tract epithelial cells. However, little is known about the host cell response against trichomonads. The aim of this study was to determine whether T. foetus and T. vaginalis stimulated the release of the cytokine interleukin (IL)-10 from cultured bovine epithelial cells. To characterise the inflammatory response induced by these parasites, primary cultures of bovine oviduct epithelial cells were exposed to either T. vaginalis or T. foetus. Within 12 h after parasite challenge, supernatants were collected and cytokine production was analysed. Large amounts of IL-10 were detected in the supernatants of cultures that had been stimulated with T. foetus. Interestingly, T. vaginalis induced only a small increase in the release of IL-10 upon exposure to the same bovine cells. Thus, the inflammatory response of the host cell is species-specific. Only T. foetus and not T. vaginalis induced the release of IL-10 by bovine oviduct epithelial cells.


Assuntos
Animais , Bovinos , Células Epiteliais/parasitologia , /biossíntese , Trichomonas vaginalis/imunologia , Tritrichomonas foetus/imunologia , Células Cultivadas , Microscopia Eletrônica de Varredura , Trichomonas vaginalis/ultraestrutura , Tritrichomonas foetus/ultraestrutura
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