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Revista Brasileira de Ginecologia e Obstetrícia. 2021;43(10):775-781
, , , , , , , , , , To analyze the scientific production regarding maternal folic acid (FA) supplementation and its relationship with autistic spectrum disorder (ASD).
We performed unrestricted electronic searches in the BIREME virtual bank, Virtual Health Library (VHL) and Medical Literature Analysis and Retrieval System Online (MEDLINE/PubMed) databases.
For sample selection, articles that met the proposed objectives were included, published in English, Spanish and Portuguese, the use of Health Sciences Descriptors (DeCS): autistic OR autism AND autism spectrum disorder AND folic acid, AND, with the use of the Medical Subject Headings (MeSH): autistic OR autism AND autistic spectrum disorder AND folic acid.
Data extraction was performed by the reviewers with a preestablished data collection formulary.
The Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) was used based on a checklist with 27 items and a 4-step flowchart.
A total of 384 articles was found by the search strategies, of which 17 were eligible following the pre-established criteria. The main findings of the present review point to maternal FA supplementation in the pre-conception period and beginning of pregnancy as a protective effect in relation to ASD, which should be indicated in this period as prevention to the problem.
According to the research analyzed, more studies are necessary to know its effects on pregnancy, since the consumption of excessive FA may not be innocuous.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2021;43(10):775-781
, , , , , , , , , , To analyze the scientific production regarding maternal folic acid (FA) supplementation and its relationship with autistic spectrum disorder (ASD).
We performed unrestricted electronic searches in the BIREME virtual bank, Virtual Health Library (VHL) and Medical Literature Analysis and Retrieval System Online (MEDLINE/PubMed) databases.
For sample selection, articles that met the proposed objectives were included, published in English, Spanish and Portuguese, the use of Health Sciences Descriptors (DeCS): autistic OR autism AND autism spectrum disorder AND folic acid, AND, with the use of the Medical Subject Headings (MeSH): autistic OR autism AND autistic spectrum disorder AND folic acid.
Data extraction was performed by the reviewers with a preestablished data collection formulary.
The Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) was used based on a checklist with 27 items and a 4-step flowchart.
A total of 384 articles was found by the search strategies, of which 17 were eligible following the pre-established criteria. The main findings of the present review point to maternal FA supplementation in the pre-conception period and beginning of pregnancy as a protective effect in relation to ASD, which should be indicated in this period as prevention to the problem.
According to the research analyzed, more studies are necessary to know its effects on pregnancy, since the consumption of excessive FA may not be innocuous.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(2):97-102
DOI 10.1590/S0100-72032004000200003
PURPOSE: to correlate the type of cervical lesion diagnosed by Pap smear with CD4 cell counts and HIV-RNA viral load in HIV-positive patients. METHODS: one hundred and fifteen HIV patients were evaluated retrospectively in the present study, during the period from January 2002 to April 2003, at a university hospital. Eighty-three patients presented cervical intraepithelial neoplasia (CIN) in Pap smear, in comparison with thirty-two with no lesions. Patients were divided into three groups, according to CD4 counts: CD4 more than 500 cells/mm³, between 200 and 500 cells/mm³, and less than 200 cells/mm³, and other three groups, according to HIV viral load: less than 10,000 HIV-RNA copies/mL, between 10,000 and 100,000 HIV-RNA copies/mL, or more than 100,000 HIV-RNA copies/mL. Correlation was investigated by the Fisher test. RESULTS: of the eighty-three patients with CIN, 73% presented CD4 counts less than 500 cells/mm³. In all CD4 groups, more than 50% of the patients presented CIN. According to the viral load, 71.7% of the patients with less than 10,000 HIV-RNA copies/mL presented CIN I, compared with 11.3% that showed CIN III. In the group with higher viral load (>100.000 HIV-RNA copies/mL), 61.5% showed CIN I and 30.8% presented CIN III. CONCLUSION: association between viral load and CIN was established (p=0.013), which was not observed with CD4 cell counts and CIN. Concomitant cervicovaginal infection was considered a potential confounding factor.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(2):97-102
DOI 10.1590/S0100-72032004000200003
PURPOSE: to correlate the type of cervical lesion diagnosed by Pap smear with CD4 cell counts and HIV-RNA viral load in HIV-positive patients. METHODS: one hundred and fifteen HIV patients were evaluated retrospectively in the present study, during the period from January 2002 to April 2003, at a university hospital. Eighty-three patients presented cervical intraepithelial neoplasia (CIN) in Pap smear, in comparison with thirty-two with no lesions. Patients were divided into three groups, according to CD4 counts: CD4 more than 500 cells/mm³, between 200 and 500 cells/mm³, and less than 200 cells/mm³, and other three groups, according to HIV viral load: less than 10,000 HIV-RNA copies/mL, between 10,000 and 100,000 HIV-RNA copies/mL, or more than 100,000 HIV-RNA copies/mL. Correlation was investigated by the Fisher test. RESULTS: of the eighty-three patients with CIN, 73% presented CD4 counts less than 500 cells/mm³. In all CD4 groups, more than 50% of the patients presented CIN. According to the viral load, 71.7% of the patients with less than 10,000 HIV-RNA copies/mL presented CIN I, compared with 11.3% that showed CIN III. In the group with higher viral load (>100.000 HIV-RNA copies/mL), 61.5% showed CIN I and 30.8% presented CIN III. CONCLUSION: association between viral load and CIN was established (p=0.013), which was not observed with CD4 cell counts and CIN. Concomitant cervicovaginal infection was considered a potential confounding factor.