Selection for novel, acid-tolerant Desulfovibrio spp. from a closed Transbaikal mine site in a temporal pH-gradient bioreactor.

Almost all the known isolates of acidophilic or acid-tolerant sulphate-reducing bacteria (SRB) belong to the spore-forming genus Desulfosporosinus in the Firmicutes. The objective of this study was to isolate acidophilic/acid-tolerant members of the genus Desulfovibrio belonging to deltaproteobacterial SRB. The sample material originated from microbial mat biomass submerged in mine water and was enriched for sulphate reducers by cultivation in anaerobic medium with lactate as an electron donor.

Morphological characteristics of the terminal villi in placental failure.

A comparative morphological study of the placentas in spontaneous and induced pregnancy aggravated by placental failure was carried out. Placental failure manifested by shrinkage of the terminal villi, lesser number and section areas of their capillaries, and higher expression of vascular endothelium growth factor and endothelial NO synthase in the syncytiotrophoblast and villous endotheliocytes. The changes were more pronounced in pregnancy developing after in vitro fertilization.

Distribution and elimination of milk angiogenin in mouse immunocompetent organs and brain.

Dynamics of angiogenin content in the serum, thymus, bone marrow, and brain of mice was studied after intravenous injection. The maximum angiogenin retention was detected in the thymus, while high rate of its elimination in the brain.