Familial occurrence of dystocia
Article Abstract:
Dystocia appears to have a genetic component. Dystocia occurs when a pregnant woman has difficulty delivering the baby during labor. Researchers used Swedish birth registries to identify mother-daughter pairs and sisters who had dystocia. Daughters of women who had dystocia were 0.7 times more likely to have dystocia. Sisters of women who had dystocia were 3 times more likely to have dystocia. Twins of women who had dystocia were 24 times more likely to have dystocia. This indicates that dystocia may be caused by some uterine defect that is hereditary.
Publication Name: American Journal of Obstetrics and Gynecology
Subject: Health
ISSN: 0002-9378
Year: 1998
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Risk of HIV infection in oral contraceptive pill users: a meta-analysis
Article Abstract:
The use of oral contraceptives appears to increase the risk of HIV infection. Researchers used a technique called meta-analysis to combine the results of 28 studies of the link between oral contraceptives and HIV infection. When the 8 best studies were combined, the use of oral contraceptives increased the risk of HIV infection 60%. Oral contraceptives may alter the composition of vaginal secretions or suppress the immune system. They may also affect the virus directly, and lead to increased viral shedding in cervical secretions.
Publication Name: Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology
Subject: Health
ISSN: 1077-9450
Year: 1999
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Familial aggregation of small-for-gestational-age births: The importance of fetal genetic effects
Article Abstract:
A study to disentangle the maternal genetic, fetal genetic and environmental effects for the risk of having small-for-gestational-age (SGA) offspring was conducted. The results revealed that the genetic factors account for almost half of the liability to have SGA births and are primarily caused by fetal genes.
Publication Name: American Journal of Obstetrics and Gynecology
Subject: Health
ISSN: 0002-9378
Year: 2006
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