Search results for: Rabbit Anti-Histone H2B (Acetlyated) Antibodies
#23683381 
2013/05/14
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Reduced hind limb ischemia-reperfusion injury in Toll-like receptor-4 mutant mice is associated with decreased neutrophil extracellular traps.
Ischemia-reperfusion (IR) injury is a significant problem in the management of patients with acute limb ischemia. Despite rapid restoration of blood flow after technically successful open and endovascular revascularization, complications secondary to IR injury continue to occur and limit clinical success. Our aim was to create a murine model of hind limb IR injury to examine the role of Toll-like receptor-4 (TLR4) and to determine whether inactive TLR4 led to a decrease in the detection of neutrophil extracellular traps (NETs), which are known to be highly thrombogenic and may mediate microvascular injury.Rahmi Oklu, Hassan Albadawi, John E Jones, Hyung-Jin Yoo, Michael T Watkins
1615 related Products with: Reduced hind limb ischemia-reperfusion injury in Toll-like receptor-4 mutant mice is associated with decreased neutrophil extracellular traps.
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Chromatin organization and basic nuclear proteins in the male germ cells of Rana tigerina.
The process of chromatin condensation during spermiogenesis in Rana tigerina is similar to the heterochromatization in somatic cells, where 30 nm fibers are coalesced together into a dense mass in spermatozoa without changing their initial size and nucleosomal organization. This conclusion was supported by the finding that the full set of core histones (H2A, H2B, H3, H4) are still present in sperm chromatin, but histone H1 is replaced by its variant, H1V. Rabbit anti-sera were raised against histone H3, H1, H1V, and H5 (H1 variant in chick erythrocyte). Anti-histone H1 antiserum cross-reacted with histone H1V, which implied the presence of a common epitope. Anti-histone H1V and H5 also showed cross-reaction with each other but not with histone H1, which implied the presence of a common epitope not shared by histone H1. Immunocytochemical studies, using the above antibodies as probes, showed that histones H3 is present in all steps of spermatogenic and spermiogenic cells, and somatic cells including red blood cells, Sertoli cells, and Leydig cells, while histone H1 is present in all of the cells mentioned except in spermatozoa where it is replaced by histone H1V. Histone H1V appears in the early spermatids starting from spermatid 1 (St1), and it persists throughout the course of spermatid differentiation into spermatozoa. Histone H1V is also found in chromosomes of metaphase spermatocyte and red blood cells. Thus histone H1V may cause the final and complete condensation of chromatin in Rana spermatozoa, a process which is similar to the heterochromatization occurring in somatic cells such as metaphase chromosome and chick erythrocyte nucleus.Sirikul Manochantr, Prapee Sretarugsa, Jittipan Chavadej, Prasert Sobhon
2715 related Products with: Chromatin organization and basic nuclear proteins in the male germ cells of Rana tigerina.
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Identification of nuclear type II [(3)H]estradiol binding sites as histone H4.
[3H]Luteolin binds covalently to uterine nuclear type II sites [B. Markaverich, K. Shoulars, M.A. Alejandro, T. Brown, Steroids 66 (2001) 707] and was used to identify this protein(s). SDS-PAGE analyses of [3H]luteolin-labeled type II site preparations revealed specific binding to 11- and 35-kDa proteins. The 11-kDa protein was identified as histone H4 by amino acid sequencing. Western blotting confirmed that the 11- and 35-kDa proteins were acetylated forms of histone H4. Anti-histone H4 antibodies (but not H2A, H2B, or H3 antibodies) quantitatively immunoadsorbed type II binding sites from nuclear extracts. Binding analyses by [3H]estradiol exchange, using luteolin as a competitor, detected specific type II binding activity to histone H4 (but not histones H2A, H2B, or H3) generated in a rabbit reticulocyte lysate translation system and confirmed that histone H4 is the type II site.Kevin Shoulars, Trellis Brown, Mary Ann Alejandro, Jan Crowley, Barry M Markaverich