Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 13 de 13
Filtrar
1.
Rev Bras Ginecol Obstet ; 43(11): 834-839, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34872141

RESUMO

OBJECTIVE: It has been suggested that excess body weight could represent a risk factor for infertility outcomes. The present study aimed to evaluate the association of overweight and anovulation among infertile women with regular menstrual cycles. METHODS: We conducted a retrospective case-control study with consistently anovulatory patients undergoing assisted reproduction treatment. The patients were stratified into normal weight (body mass index [BMI]: 18.5-24.9kg/m2) and overweight (BMI: 25.0-29.9kg/m2).Those with polycystic ovary syndrome or obesity were excluded. The groups were matched for age, duration of infertility, prolactin, follicle stimulating hormone (FSH), thydroid stimulating hormone (TSH), luteinizing hormone (LH), and estradiol levels. RESULTS: Overweight was significantly associated with anovulation, when using the World Health Organization (WHO) criteria for anovulation: progesterone levels > 5.65 ng/ml and ultrasonography evidence of follicle collapse (odds ratio [OR]: 2.69; 95% confidence interval [CI95%]: 1.04-6.98). CONCLUSION: Body mass index above the normal range jeopardizes ovulation among non-obese infertile women with regular menstrual cycles.


OBJETIVO: O excesso de peso corporal tem sido associado como fator de risco para infertilidade. Este estudo teve como objetivo avaliar a associação de sobrepeso e anovulação entre mulheres inférteis com ciclos menstruais regulares. MéTODOS: Realizamos um estudo retrospectivo de caso-controle com mulheres com anovulação consistente em tratamento por reprodução assistida. As pacientes foram estratificadas entre aquelas com peso normal (índice de massa corporal [IMC]: 18,5­24,9 Kg/m2) e as com sobrepeso (IMC: 25,0­29,9 Kg/m2). As pacientes com síndrome do ovário policístico ou obesidade foram excluídas. Os grupos foram pareados por idade, duração da infertilidade, níveis de prolactina, hormônio folículo-estimulante (FSH), hormônio tiroestimulante (TSH), hormônio luteinizante (LH) e estradiol. RESULTADOS: O excesso de peso associou-se significativamente à anovulaçãoquando usados os critérios de anovulação da Organização Mundial de Saúde (OMS): níveis de progesterona > 5,65 ng/ml e evidência ultrassonográfica de colapso folicular (razão de chances [RC]: 2,69; IC95%: 1,04­6,98). CONCLUSãO: O IMC acima da faixa normal compromete a ovulação em mulheres inférteis não obesas com ciclos menstruais regulares.


Assuntos
Anovulação , Infertilidade Feminina , Síndrome do Ovário Policístico , Anovulação/complicações , Estudos de Casos e Controles , Feminino , Hormônio Foliculoestimulante , Humanos , Infertilidade Feminina/complicações , Ciclo Menstrual , Sobrepeso/complicações , Síndrome do Ovário Policístico/complicações , Estudos Retrospectivos
2.
Rev. bras. ginecol. obstet ; 43(11): 834-839, Nov. 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1357075

RESUMO

Abstract Objective It has been suggested that excess body weight could represent a risk factor for infertility outcomes. The present study aimed to evaluate the association of overweight and anovulation among infertile women with regular menstrual cycles. Methods We conducted a retrospective case-control study with consistently anovulatory patients undergoing assisted reproduction treatment. The patients were stratified into normal weight (body mass index [BMI]: 18.5-24.9kg/m2) and overweight (BMI: 25.0- 29.9kg/m2).Those with polycystic ovary syndrome or obesity were excluded. The groups were matched for age, duration of infertility, prolactin, follicle stimulating hormone (FSH), thydroid stimulating hormone (TSH), luteinizing hormone (LH), and estradiol levels. Results Overweight was significantly associated with anovulation, when using the World Health Organization (WHO) criteria for anovulation: progesterone levels>5.65 ng/ml and ultrasonography evidence of follicle collapse (odds ratio [OR]: 2.69; 95% confidence interval [CI95%]: 1.04-6.98). Conclusion Body mass index above the normal range jeopardizes ovulation among non-obese infertile women with regular menstrual cycles.


Resumo Objetivo O excesso de peso corporal tem sido associado como fator de risco para infertilidade. Este estudo teve como objetivo avaliar a associação de sobrepeso e anovulação entre mulheres inférteis com ciclos menstruais regulares. Métodos Realizamos um estudo retrospectivo de caso-controle com mulheres com anovulação consistente em tratamento por reprodução assistida. As pacientes foram estratificadas entre aquelas com peso normal (índice de massa corporal [IMC]: 18,5- 24,9 Kg/m2) e as com sobrepeso (IMC: 25,0-29,9 Kg/m2). As pacientes com síndrome do ovário policístico ou obesidade foram excluídas. Os grupos foram pareados por idade, duração da infertilidade, níveis de prolactina, hormônio folículo-estimulante (FSH), hormônio tiroestimulante (TSH), hormônio luteinizante (LH) e estradiol. Resultados O excesso de peso associou-se significativamente à anovulaçãoquando usados os critérios de anovulação da Organização Mundial de Saúde (OMS): níveis de progesterona>5,65 ng/ml e evidência ultrassonográfica de colapso folicular (razão de chances [RC]: 2,69; IC95%: 1,04-6,98). Conclusão O IMC acima da faixa normal compromete a ovulação em mulheres inférteis não obesas com ciclos menstruais regulares.


Assuntos
Humanos , Feminino , Síndrome do Ovário Policístico/complicações , Infertilidade Feminina/complicações , Anovulação/complicações , Estudos de Casos e Controles , Estudos Retrospectivos , Sobrepeso/complicações , Hormônio Foliculoestimulante , Ciclo Menstrual
4.
Forensic Sci Int Genet ; 46: 102235, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31982800

RESUMO

Accumulation of sexual assault evidences unsubmitted to forensic DNA testing raises concern and it favors low rates of sexual crimes resolution. However, with the advent of DNA databases, these evidences have provided valuable information for investigations. In Brazil, the use of DNA databases is recent and few studies assessed their contribution to criminal resolution. In this regard, this study aimed to evaluate the potential of the DNA Database of Goias State, Central Brazil (BPG-SPTC/GO) in the resolution of sexual crimes without suspects through the insertion of profiles obtained from stored untested evidences collected between 2004 and 2018. Samples were submitted to DNA extraction by differential lysis, followed by the amplification of STR autosomal markers, capillary electrophoresis analysis in the ABI 3500 genetic analyzer and insertion in the BPG-SPTC/GO using CODIS 7 software. The rate of eligible samples for insertion and rates related to the obtained matches were evaluated. Statistical analyses were performed with Epi Info ™ v.7 and BioEstat 5.0 software. A total of 275 samples were submitted to DNA testing, 202 out of them (73.5%) presented eligible profiles for insertion. A total of 176 (64%; 176/202) were inserted, one crime scene profile from each case. Overall, 60 hits were generated, all series sexual matches; a higher prevalence of forensic hits was detected (81.7%; 49/60) and a total of 32 criminal investigations were assisted (18.2%; 32/176). As the use of DNA databases in Brazil is recent and Brazilian criminal law has stringent requirements, our results reinforce that the use of DNA databases for stored sexual crimes evidences is a feasible forensic tool and that the increasing of the number of both types of profiles in DNA databases, evidences and criminals, causes positive reflects on the number of matches generated. However, further studies are necessary to evaluate if this effectiveness reflects positively on conviction rates of sexual crimes.


Assuntos
Impressões Digitais de DNA , Bases de Dados de Ácidos Nucleicos , Genética Forense , Repetições de Microssatélites , Delitos Sexuais , Brasil , Eletroforese Capilar , Feminino , Humanos , Masculino , Reação em Cadeia da Polimerase , Delitos Sexuais/legislação & jurisprudência
5.
Rev Bras Ginecol Obstet ; 40(10): 625-630, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30352461

RESUMO

Improving infrastructural conditions of the in vitro fertilization laboratory, such as the air quality, has profound positive effects on embryo culture. Poor environmental conditions reduce the rate of embryo formation and, therefore, of pregnancy. This review article presents important publications regarding the impact of air quality in human reproduction laboratories on embryo quality, pregnancy success, and live births. The studies demonstrate that the replacing the air filtration system improves significantly the environmental air quality, and, consequently, improves laboratory parameters, such as the fertilization rate, the number of blastocysts, the embryo implantation rate, and the number of live births. On the other hand, improving air quality decreases the number of abortions. Therefore, environmental parameters that improve embryo quality and increase healthy child birth rates must be the main targets for the assisted reproduction laboratory quality control.


Melhorar as condições de infraestrutura do laboratório de fertilização in vitro, com influência na qualidade do ar, tem efeitos positivos profundos na qualidade do embrião. As más condições ambientais do ar reduzem a taxa de sucesso na formação de embriões e a taxa de gravidez. Este artigo de revisão apresenta importantes publicações sobre o impacto da qualidade do ar dentro do laboratório de reprodução humana na qualidade do embrião, no sucesso de gravidez e no número de nascidos vivos. Os estudos demonstram que a troca do sistema de filtração de ar melhora significativamente a qualidade do ar ambiente, e consequentemente, melhora os parâmetros laboratoriais, tais como a taxa de fertilização, o número de blastocistos, a taxa de implantação e o número de nascidos vivos. Por outro lado, a melhora da qualidade do ar diminui o número de abortos. Portanto, os parâmetros ambientais que melhoram a qualidade do embrião e aumentam as taxas de nascimentos de crianças saudáveis devem ser os principais alvos para o controle de qualidade do laboratório de reprodução assistida.


Assuntos
Filtros de Ar , Técnicas de Cultura Embrionária/normas , Ambiente Controlado , Fertilização in vitro/normas , Filtração/normas , Humanos , Laboratórios , Controle de Qualidade
6.
BMJ Open ; 6(7): e010837, 2016 07 05.
Artigo em Inglês | MEDLINE | ID: mdl-27381205

RESUMO

OBJECTIVES: To describe socioeconomic and antiretroviral (ARV) drug resistance profiles among young pregnant women infected with HIV-1. SETTING: A public health antenatal programme responsible for screening ∼90 000 pregnant women per year for nine different infectious diseases in Central Western Brazil. PARTICIPANTS: 96 young pregnant women (15-24 years) infected with HIV-1. PRIMARY AND SECONDARY OUTCOME MEASURES: Standard interviews and blood samples were taken at the time of recruitment, at the first medical appointment after confirmation of diagnosis of HIV-1 infection, and before ARV prophylaxis initiation. Clinical and laboratory data were retrieved from medical files. HIV-1 pol gene sequences (entire protease/PR, partial reverse transcriptase/RT) were obtained from plasma RNA. ARV resistance mutations (CPR/Stanford HIV-1; International AIDS Society-USA databases) were identified. RESULTS: The median age was 21 years; most reported <8 years education; 73% were recently diagnosed. Approximately 20% (19/96) presented late for antenatal care (after 26 gestational weeks), while 49% reported ≥2 previous pregnancies. Possible heterosexual transmission by an HIV-1 infected partner (17%) and commercial sex work (2%) were reported. The median of CD4 cell count was 526 cells/mm(3); the median viral load was: 10 056 copies/mL in ARV-naïve (48/96) patients and 5881 copies/mL in ARV-exposed (48/96) patients. Two probable seroconversion cases during pregnancy were identified in adolescents. One mother-to-child transmission case (1.0%) was observed. Transmitted drug resistance among ARV-naïve patients was 9.3% (CI 95% 3.3% to 19.6%); secondary drug resistance among ARV-exposed patients was 12.5% (CI 95% 4.7% to 25.6%). CONCLUSIONS: Despite high access to antenatal care, the low socioeconomic-educational profiles seen in these young HIV-1-infected women highlight the necessity of improved public health educational and preventive strategies regarding HIV infection and early unplanned pregnancy.


Assuntos
Fármacos Anti-HIV/uso terapêutico , Farmacorresistência Viral/imunologia , Infecções por HIV/transmissão , HIV-1/efeitos dos fármacos , Transmissão Vertical de Doenças Infecciosas/prevenção & controle , Complicações Infecciosas na Gravidez/epidemiologia , Produtos do Gene pol do Vírus da Imunodeficiência Humana/efeitos dos fármacos , Adolescente , Brasil/epidemiologia , Contagem de Linfócito CD4 , Estudos Transversais , Farmacorresistência Viral/genética , Feminino , Infecções por HIV/tratamento farmacológico , Infecções por HIV/genética , Infecções por HIV/imunologia , Humanos , Recém-Nascido , Transmissão Vertical de Doenças Infecciosas/estatística & dados numéricos , Gravidez , Complicações Infecciosas na Gravidez/tratamento farmacológico , Complicações Infecciosas na Gravidez/imunologia , Fatores de Risco , Trabalho Sexual , Carga Viral , Populações Vulneráveis , Adulto Jovem
7.
J Med Virol ; 88(11): 1936-43, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27037910

RESUMO

Primary infection, seroconversion, and transmitted drug resistance (TDR) during pregnancy may influence the risk of mother-to-child-transmission (MTCT) of HIV-1 infection. This study estimated recent seroconversion, TDR rates, HIV-1 subtypes and pregnancy outcomes among 95 recently diagnosed, antiretroviral (ARV)-naïve pregnant women recruited during antenatal care in central western Brazil. Recent seroconversion was defined by BED-capture enzyme immunoassay (<155 days) and ambiguous nucleotides base calls (<1 year) in pol sequences (protease-PR and reverse transcriptase-RT regions). TDR was evaluated by the Calibrated Population Resistance tool. HIV-1 subtypes were defined by REGA and phylogenetic analyses. The median age of participants was 25 years; the median gestational age at diagnosis was 20.5 weeks. Based on serology and sequence polymorphism, recent infection was identified in 11.6% (11/95) and, 9 of them (82%), probably seroconverted during pregnancy; one MTCT case was observed among them. Three cases of stillbirth were observed among chronic infected patients (3.6%; 3/84). Moderate rate of TDR was observed (9/90, 10%, CI95% 4.7-18.1%). Subtype B was 60% (54/90), 13.3% (12/90) was subtype C, 6.7% (6/90) was subtype F1. Recombinant B(PR) /F1(RT) and F1(PR) /B(RT) viruses comprised 15.5% (14/90); B(PR) /C(RT) mosaics represented 4.4% (4/90). Seroconversion during pregnancy, late presentation to antenatal care and moderate TDR identified in this study represent significant challenges for the MTCT elimination. J. Med. Virol. 88:1936-1943, 2016. © 2016 Wiley Periodicals, Inc.


Assuntos
Fármacos Anti-HIV/farmacologia , Farmacorresistência Viral , Infecções por HIV/transmissão , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , Transmissão Vertical de Doenças Infecciosas , Complicações Infecciosas na Gravidez/virologia , Adulto , Fármacos Anti-HIV/uso terapêutico , Brasil/epidemiologia , Feminino , Variação Genética , Genótipo , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Transcriptase Reversa do HIV/genética , Soropositividade para HIV , HIV-1/genética , HIV-1/imunologia , HIV-1/isolamento & purificação , Humanos , Mães , Mutação de Sentido Incorreto , Filogenia , Gravidez , Complicações Infecciosas na Gravidez/epidemiologia , Resultado da Gravidez , Análise de Sequência de DNA , Natimorto/epidemiologia , Produtos do Gene pol do Vírus da Imunodeficiência Humana/genética
8.
J Med Virol ; 87(5): 798-806, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25649362

RESUMO

HIV-1 transmitted-drug-resistance and genetic diversity are dynamic and may differ in distinct locations/risk groups. In Brazil, increased AIDS incidence and related mortality have been detected in the Northeast region, differently from the epicenter in the Southeast. This cross-sectional study describes transmitted-dru- resistance and HIV-1 subtypes in protease/PR and reverse transcriptase/RT regions among antiretroviral naïve patients from Piauí State, Northeast Brazil. Among 96 patients recruited 89 (92.7%) had HIV-1 PR/RT regions sequenced: 44 females and 45 males, 22 self-declared as men who have sex with men. Transmitted-drug-resistance was investigated by CPR tool (Stanford HIV-1 Drug Resistance/SDRM). HIV-1 subtypes were assigned by REGA and phylogenetic inference. Overall, transmitted-drug-resistance rate was 11.2% (10/89; CI 95%: 5.8-19.1%); 22.7% among men who have sex with men (5/22; CI 95%: 8.8-43.4%), 10% in heterosexual men (2/20; CI 95%: 1.7-29.3%) and 6.8% in women (3/44; CI 95%: 1.8-17.4%). Singleton mutations to protease-inhibitor/PI, nucleoside-reverse-transcriptase-inhibitor/NRTI or non-nucleoside-reverse-transcriptase-inhibitor/NNRTI predominated (8/10): PI mutations (M46L, V82F, L90M); NRTI mutations (M41L, D67N) and NNRTI mutations (K103N/S). Dual class resistance mutations to NRTI and NNRTI were observed: T215L (NRTI), Y188L (NNRTI) and T215N (NRTI), F227L (NNRTI). Subtype B prevailed (86.6%; 77/89), followed by subtype F1 (1.1%, 1/89) and subtype C (1.1%, 1/89). B/F1 and B/C intersubtype recombinants represented 11.2% (10/89). In Piauí State extensive testing of incidence and transmitted-drug-resistance in all populations with risk behaviors may help control AIDS epidemic locally.


Assuntos
Transmissão de Doença Infecciosa , Farmacorresistência Viral , Variação Genética , Infecções por HIV/transmissão , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , HIV-1/genética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Estudos Transversais , Feminino , Genótipo , Infecções por HIV/epidemiologia , Protease de HIV/genética , Transcriptase Reversa do HIV/genética , HIV-1/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Mutação de Sentido Incorreto , Filogenia , Prevalência , Análise de Sequência de DNA , Adulto Jovem
9.
AIDS Res Hum Retroviruses ; 31(2): 250-4, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25411830

RESUMO

The Brazilian AIDS epidemic is characterized by significant geographic contrasts: a reduction in incidence and mortality in the epicenter (southeast) and an increase in the northeast. HIV-1-transmitted drug resistance (TDR) and genetic diversity were investigated among 106 antiretroviral (ARV)-naive patients from Maranhão State, northeast. The HIV-1 protease (PR) and reverse transcriptase (RT) regions were sequenced; subtypes were assigned by REGA/phylogenetic analysis. TDR to the nucleoside/nonnucleoside reverse transcriptase inhibitor (NRTI/NNRTI) and protease inhibitor (PI) was identified by the Calibrated Population Resistance tool (Stanford). The median age was 31 years (range 18-72), with 54.7% women, 78.3% heterosexual transmission, and 17.9% men who have sex with men (MSM). Around 30% had <350 CD4(+) T cells/µl and 47.2% had plasma viral loads ≤10,000 copies/ml. The TDR rate was 3.8% (4/106; CI 95%, 1.2-8.9%) (three males, two of them MSM). Only single class mutations to NRTI (M184V; T215S) or NNRTI (K103S/N) were detected. Subtype B represented 81.1% (86/106), F1 1.9% (2/106), and C 2.8% (3/106); 14.2% were mosaics: 13 BF1 and 2 BC. Surveillance of TDR and HIV-1 genetic diversity is important to improve control strategies regionally.


Assuntos
Farmacorresistência Viral , Infecções por HIV/transmissão , Infecções por HIV/virologia , HIV-1/efeitos dos fármacos , Adolescente , Adulto , Idoso , Brasil/epidemiologia , Feminino , Variação Genética , Genótipo , Infecções por HIV/epidemiologia , Protease de HIV/genética , Transcriptase Reversa do HIV/genética , HIV-1/classificação , HIV-1/genética , HIV-1/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Epidemiologia Molecular , Dados de Sequência Molecular , Filogenia , Prevalência , Análise de Sequência de DNA , Adulto Jovem
10.
Int J Infect Dis ; 25: 16-21, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24818991

RESUMO

BACKGROUND: Studies on sexually transmitted infections in Brazil are done mainly in large metropolises and screening is available for pregnant women only. We aimed to estimate the prevalence and risk factors for Chlamydia trachomatis, Neisseria gonorrhoeae, and Treponema pallidum infection among young non-pregnant women in non-clinical settings in middle-sized cities of Central Brazil. METHODS: A cross-sectional community-based sample of 1072 participants was included. Sexually active women (64.9%) provided first-catch urine samples for PCR investigation of chlamydial and gonococcal infection. Syphilis was tested in serum. Univariate analysis investigated risk factors for chlamydial infection. Multivariate logistic regression included associations with a p-value <0.20. RESULTS: The mean age of participants was 18 years; 73.2% reported unprotected intercourse, 37.6% were married/cohabiting, and 5% reported a previous STI. Prevalence rates of C. trachomatis, N. gonorrhoeae, and T. pallidum were 9.6% (95% confidence interval (CI) 7.4-12.4%), 0.7% (95% CI 0.2-1.9%), and 0.15% (95% CI 0.0-0.7%), respectively. After adjustments, being <20 years old (adjusted odds ratio (aOR) 1.90, 95% CI 1.07-3.37) and having three or more lifetime sexual partners (aOR 2.57, 95% CI 1.46-4.53) were associated with the risk for chlamydial infection. CONCLUSIONS: We observed a high prevalence of chlamydial infection and sexual risk behaviors in this population. These findings are important to guide screening strategies in Brazil.


Assuntos
Doenças Bacterianas Sexualmente Transmissíveis/epidemiologia , Adolescente , Adulto , Fatores Etários , Brasil/epidemiologia , Estudos Transversais , Feminino , Humanos , Razão de Chances , Vigilância da População , Prevalência , Fatores de Risco , Comportamento Sexual , Fatores Socioeconômicos , Adulto Jovem
11.
PLoS One ; 8(11): e79189, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24223904

RESUMO

OBJECTIVE: To estimate the incidence of HIV-1 infection among pregnant women from central-western Brazil. DESIGN: Observational cross-sectional study. METHODS: A total of 54,139 pregnant women received antenatal HIV screening from a network of public healthcare centers in 2011. The incidence of confirmed HIV-1 infection was estimated using the Serological Testing Algorithms for Recent HIV Seroconversion (STARHS) methodology and BED-capture enzyme immunoassay (BED-CEIA). The yearly incidence was calculated, and adjusted incidence rates were estimated. For a subgroup of patients, protease and partial reverse transcriptase regions were retrotranscribed from plasma HIV-1 RNA and sequenced after performing a nested polymerase chain reaction. RESULTS: Of the participants, 20% had a pregnancy before the age of 18 and approximately 40% were experiencing their first pregnancy. Of the 54,139 pregnant women screened, 86 had a confirmed HIV-1 diagnosis, yielding an overall prevalence of 1.59 cases per 1000 women (95% CI 1.27-1.96). A higher prevalence was detected in the older age groups, reflecting cumulative exposure to the virus over time. Among the infected pregnant women, 20% were considered recently infected according to the BED-CEIA. The estimated incidence of HIV infection was 0.61 per 1000 person-years (95% CI 0.33-0.89); the corrected incidence was 0.47 per 1000 person-years (95% CI 0.26-0.68). In a subgroup of patients, HIV-1 subtype C (16.7%) was the second most prevalent form after subtype B (66.7%); BF1 recombinants (11.1%) and one case of subtype F1 (5.5%) were also detected. CONCLUSION: This study highlights the potential for deriving incidence estimates from a large antenatal screening program for HIV. The rate of recent HIV-1 infection among women in their early reproductive years is a public health warning to implement preventive measures.


Assuntos
Infecções por HIV/epidemiologia , HIV-1/genética , Programas de Rastreamento/métodos , Complicações Infecciosas na Gravidez/epidemiologia , Sorodiagnóstico da AIDS/métodos , Adolescente , Adulto , Fatores Etários , Brasil/epidemiologia , Criança , Estudos Transversais , Ensaio de Imunoadsorção Enzimática , Feminino , Genótipo , Infecções por HIV/sangue , Infecções por HIV/diagnóstico , HIV-1/classificação , Humanos , Incidência , Filogenia , Gravidez , Complicações Infecciosas na Gravidez/diagnóstico , Complicações Infecciosas na Gravidez/virologia , Prevalência , Adulto Jovem , Produtos do Gene pol do Vírus da Imunodeficiência Humana/genética
13.
Rev. patol. trop ; 37(4): 295-309, out.-dez. 2008. ilus
Artigo em Português | LILACS | ID: lil-507526

RESUMO

A mucosa do trato genital feminino é, ao mesmo tempo, porta de entrada para os principais microrganismos patogênicos de transmissão sexual e local de desenvolvimento do embrião semi-alogênico. Para exercer suas funções, o sistema imune, associado à mucosa do trato genital feminino, apresenta certas particularidades que o diferenciam do sistema imune do trato gastrointestinal. Os hormônios sexuais femininos parecem interferir nas características imunológicas deste sistema e a distribuição celular distingue-se dos outros sítios mucosos, não possuindo folículos linfóides organizados como as placas de Peyer no intestino. A principal imunoglobulina encontrada nas secreções cervicais e vaginais é a IgG, em contraste com a IgA, predominante na saliva, na lágrima e em outras secreções biológicas. O objetivo desta revisão foi apresentar as principais características do sistema imune no trato genital feminino e discutir o impacto das doenças sexualmente transmissíveis (DST) neste sítio imune da mucosa.


Assuntos
Humanos , Feminino , Infecções Sexualmente Transmissíveis , Genitália Feminina , Imunidade nas Mucosas
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...