STUDY DESIGN: Risks of PPH were assessed according to a history of PPH, severity, and subtype (atony, retained placenta, or lacerations) in 538,332
primiparous women whose data were included in the Swedish Medical Birth Register from 1997-2009. The role of stable maternal risk factors was evaluated in regression models that predicted probability of recurrent PPH in second and third pregnancy. RESULTS: Women with a history of PPH had a 3-fold increased risk of PPH in their second pregnancy compared with unaffected women (15.0% vs 5.0%, respectively). Adjustment for stable maternal risk Selleckchem MX69 factors did not attenuate this risk significantly (adjusted relative risk, 3.0; 95% confidence interval, 2.9-3.1). In a third pregnancy, the risk of PPH was 26.6% after 2 previously affected pregnancies, compared with 4.4% in women with no previous PPH. A history of a specific type of PPH predicted recurrence of PPH in the second pregnancy, not only of the same type but other causes as well. CONCLUSION: PPH risk is highest among women with bigger than 1 previously affected delivery and in those with a previous severe PPH. Chronic conditions that are known to be risk factors for PPH do not explain the recurrence risks. The recurrence patterns across PPH
Bafilomycin A1 subtypes may point to shared pathologic mechanisms underlying the varying PPH causes.”
“The pathophysiology of severe aplastic anemia (SAA) is immune-mediated destruction of hematopoietic
stem and progenitor cells (HSPCs). Most patients respond to immunosuppressive therapies, but a minority transform to myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML), frequently associated with monosomy 7 (-7). Thirteen SAA patients were analyzed for acquired mutations in myeloid cells at the time of evolution to -7, and all had a dominant HSPC clone bearing specific acquired mutations. However, mutations in genes associated with MDS/AML were present in only 4 cases. click here Patients who evolved to MDS and AML showed marked progressive telomere attrition before the emergence of -7. Single telomere length analysis confirmed accumulation of short telomere fragments of individual chromosomes. Our results indicate that accelerated telomere attrition in the setting of a decreased HSPC pool is characteristic of early myeloid oncogenesis, specifically chromosome 7 loss, in MDS/AML after SAA, and provides a possible mechanism for development of aneuploidy.”
“Sessile organisms may experience chronic exposure to copper that is released into the marine environment from antifoulants and stormwater runoff. We have identified the site of damage caused by copper to the symbiotic cnidarian, Zoanthus robustus (Anthozoa, Hexacorallia). External changes to the zoanthids were apparent when compared with controls. The normally flexible bodies contracted and became rigid.