We report here the development of genus-specific primers that can detect all the major Zygosaccharomyces species including all those associated with foods; the rare and localised species Z. machadoi and Z. gambellarensis are not detected. The size of the single amplicon produced varies between species and in some cases is sufficiently different to assign provisional species identification. Sequence data from rDNA regions are available for virtually all described yeast species in all genera, thus, prior to having sufficient sequence data from structural genes, rDNA regions may provide more generally suitable candidates for both genus-specific and species-specific primer design. (C) 2013 Elsevier
B.V. All rights reserved.”
“In myelodysplastic syndromes with ring sideroblasts (MDS-RS), the iron deposited in the mitochondria of RS is present in the form of mitochondrial ferritin CCI-779 concentration (FTMT), Selleckchem Fludarabine but it is unknown whether FTMT overexpression is the cause or the result of mitochondrial iron deposition. Lentivirus FTMT-transduced CD34+ bone marrow cells from seven healthy donors and CD34+ cells from 24 patients with MDS-RS were cultured according to
a procedure that allowed the expansion of high numbers of erythroid progenitors. These cells were used to investigate the possible influence of experimentally-induced FTMT overexpression on normal erythropoiesis and the functional effects of FTMT in sideroblastic erythropoiesis. In MDS-RS progenitors, FTMT overexpression was associated with reduced cytosolic ferritin levels, increased surface transferrin receptor expression and reduced cell proliferation; FTMT effects were independent of SF3B1 mutation status. Similarly, FTMT https://www.selleckchem.com/products/shp099-dihydrochloride.html overexpressing normal erythroid progenitors were characterized by reduced cytosolic ferritin content and increased CD71 expression, and also by higher apoptotic rate in comparison with the FTMT- controls.
Significantly lower levels of STAT5 phosphorylation following erythropoietin stimulation were found in both sideroblastic and normal FTMT+ erythroid cells compared to the FTMT- cells. In conclusion, experimental overexpression of FTMT may modify mitochondrial iron availability and lead to ineffective erythropoiesis.”
“Carbon isotopic fractionation was investigated in fatty acids (FA) of adipose tissue and blood serum of threatened Steller’s eiders (Polysticta stelleri) and spectacled eiders (Somateria fischeri) relative to the FA in their diets. Captive eiders were fed a known diet for 180 days with serum sampled at 60, 120 and 180 days immediately after a 12 h fast; adipose was collected at 180 days. Essential FA (EFA) in the adipose showed varying degrees of isotope fractionation (0-4%), depending on FA structure. The delta(13)C values of long-chain FA 20:5n-3 and 22:6n-3 did not differ from those in the diet, while those of 18:2n-6 and 18:3n-3 were similar to 2% greater than in the diet.