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1.
J Med Virol ; 84(2): 183-7, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22170535

RESUMO

Detection of HIV-1 RNA in semen is used commonly to determine the safety of semen processing procedures before assisted reproductive technology (ART). Using two panels of prepared semen samples containing HIV-1 the performances of protocols from 14 centers have been compared. No false-positive results were detected but false-negative results were frequent when the concentration was below 500 HIV-1 RNA copies/ml of seminal plasma. Frequency of HIV-1 RNA detection was higher on seminal cells than on seminal plasma. Assays (or protocols) for quantifying HIV-1 RNA in semen performed less well than standardized blood plasma assays. The HIV load in seminal plasma could be a useful marker of the risk of sexual transmission of the virus. Its use as a marker of global HAART efficiency in the HIV reservoir needs further study. Standardized assays are required for detection and measurement of HIV-1 RNA in semen samples.


Assuntos
HIV-1/genética , RNA Viral/análise , Sêmen/virologia , Infecções por HIV/transmissão , Infecções por HIV/virologia , Soropositividade para HIV/virologia , Humanos , Masculino , Controle de Qualidade , Técnicas de Reprodução Assistida , Sensibilidade e Especificidade , Carga Viral
2.
Hum Fertil (Camb) ; 13(2): 90-7, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20722578

RESUMO

Since 1999, we have treated HIV-positive men with sperm washing as part of a risk-reduction programme with a year-on-year increase in total infectious cycles performed to over 200 in 2008. Four hundred and thirty nine cycles of IUI, 114 cycles of IVF and 117 cycles of ICSI have been performed in HIV positive men over the decade and of the 259 couples treated, a pregnancy rate and ongoing pregnancy rate per couple of 45.4% and 36.3% have been achieved with over 100 children born with no seroconversions. We outline the continued importance of such risk-reduction measures with 9.7% of samples from men with 'stable' disease on anti-retroviral treatment and undetectable viral load demonstrating detectable viral particles in seminal fluid and discuss measures to improve outcome in this patient group.


Assuntos
Transmissão de Doença Infecciosa/prevenção & controle , Soropositividade para HIV/virologia , Espermatozoides , Adulto , Feminino , Fertilização in vitro , Humanos , Masculino , Pessoa de Meia-Idade , Gravidez , Taxa de Gravidez , Resultado do Tratamento , Carga Viral
3.
Hum Reprod ; 25(8): 1869-76, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20534606

RESUMO

BACKGROUND: Since 1999, we have treated HIV-positive men with sperm washing as part of a risk-reduction programme. METHODS: Retrospective analysis of the sperm-washing database from the treatment of 245 couples with 439 cycles of intrauterine insemination assessed the effects of patient factors (age, maternal FSH, rank of attempt), markers of HIV-disease [time since diagnosis, CD4 count, viral load (VL), use of highly active antiretroviral therapy (HAART)], cycle factors (natural versus stimulated, number of follicles, fresh versus frozen sperm) and sperm parameters on clinical (CPR) and ongoing pregnancy rate (OPR). RESULTS: Overall 111-245 (45.4%) couples achieved a clinical pregnancy (CPR: 13.5% and OPR: 9.6% per insemination) with no seroconversions. The mean duration since HIV diagnosis was 5.8 years, 73% of men were on antiretroviral therapy, there was an undetectable VL in 64% and the median CD4 was 409 cells/mm(3). A significantly decreased OPR and a non-significantly increased miscarriage rate (MR) was observed after the female age of 40. Similarly, there was a significant increased OPR and decreased MR for women with a mean cycle maternal FSH of <6.4 IU/l. There was no effect of VL, CD4 count, use of HAART or time since diagnosis on the outcome. Nor was there a difference in the OPR according to paternal age, rank of attempt, cycle regime or number of follicles. Semen volume, sperm concentration, total count and progressive motility and post-wash concentration, progressive motility and total motile count inseminated were significantly higher in successful cycles. The use of frozen sperm had a significant negative impact on outcome. CONCLUSIONS: This study of the potential safe and successful reproductive options available to HIV-positive men demonstrates that maternal age and semen quality, rather than HIV factors, remain the most important determinants of cycle success.


Assuntos
Infecções por HIV/prevenção & controle , Inseminação Artificial Homóloga/métodos , Espermatozoides/virologia , Adulto , Fatores Etários , Feminino , Infecções por HIV/virologia , Humanos , Masculino , Pessoa de Meia-Idade , Gravidez , Resultado da Gravidez , Taxa de Gravidez , Estudos Retrospectivos , Medição de Risco , Sêmen/virologia , Resultado do Tratamento , Carga Viral
4.
Fertil Steril ; 94(6): 2458-61, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20451193

RESUMO

Fertility assistance to HIV-positive men is now accepted practice in many parts of the world. We analyze the legislative, ethical, and clinical factors that explain the differences across continents with the aim of opening up the debate within the United States on whether clinics can justify denying HIV-infected men the opportunity of parenting through a now well-established risk reduction method with a proved safety record.


Assuntos
Descontaminação/métodos , Infecções por HIV , Cooperação Internacional , Técnicas de Reprodução Assistida , Recuperação Espermática , Separação Celular , Descontaminação/ética , Descontaminação/legislação & jurisprudência , Descontaminação/normas , Transmissão de Doença Infecciosa/ética , Transmissão de Doença Infecciosa/legislação & jurisprudência , Transmissão de Doença Infecciosa/prevenção & controle , Feminino , Infecções por HIV/transmissão , Infecções por HIV/virologia , Humanos , Cooperação Internacional/legislação & jurisprudência , Masculino , Gravidez , Técnicas de Reprodução Assistida/ética , Técnicas de Reprodução Assistida/legislação & jurisprudência , Técnicas de Reprodução Assistida/normas , Técnicas de Reprodução Assistida/estatística & dados numéricos , Recuperação Espermática/ética , Recuperação Espermática/legislação & jurisprudência , Recuperação Espermática/normas , Espermatozoides/citologia , Espermatozoides/virologia , Reino Unido , Estados Unidos
5.
J Med Virol ; 78(7): 877-82, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16721844

RESUMO

Couples in whom the man is HIV-1-positive may use medically assisted procreation in order to conceive a child without contaminating the female partner. But, before medically assisted procreation, the semen has to be processed to exclude HIV and tested for HIV nucleic acid before and after processing. The performance was evaluated of the technical protocols used to detect and quantify HIV-1 in 11 centers providing medically assisted procreation for couples with HIV-1 infected men by testing panels of seminal plasma and cells containing HIV-1 RNA and/or DNA. The performance of these tests varied due to the different assays used. False positive results were obtained in 14-19% of cases. The sensitivity for RNA detection in seminal plasma was 500-1,000 RNA copies/ml, over 500 RNA copies/10(6) cells in semen cells, and for DNA detection in semen cells 50-500 DNA copies/10(6) cells. The use of silica-based extraction seemed to increase the assay performance, whereas the use of internal controls to detect PCR inhibitor did not. This first quality control highlights the need for technical improvements of the assays to detect and quantify HIV in semen fractions and for regular evaluation of their performance.


Assuntos
Infecções por HIV/virologia , HIV-1/genética , HIV-1/isolamento & purificação , Técnicas de Reprodução Assistida/normas , Sêmen/virologia , DNA Viral/análise , DNA Viral/genética , Feminino , Humanos , Masculino , Controle de Qualidade , RNA Viral/análise , RNA Viral/genética
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