Introduction: Interferon beta is one of the members of type I interferons. Creating R27T and V101F mutations is one of the important researches performed to improve function, decrease immunogenicity, increase expression and increase half-life of interferon beta. In this study, the effects of R27T and V101F mutations on interferon beta binding to interferon receptors were studied by molecular do...

A new concept of directed-divergence function of type fi is introduced in this paper• This concept is used in obtaining a directed-divergence of type fl which generalizes Kullback's directed-divergence and has a relation with R6nyi's information-gain of order ft. This relation can be used to give another characterization of information-gain of order ft. A characterization theorem for the direct...

OBJECTIVE Beta-cell regeneration is a fundamental but elusive goal for type 1 diabetes research. Our objective is to review newer human and animal studies of beta-cell destruction and regeneration and consider the implications for treatment of type 1 diabetes. RESEARCH DESIGN AND METHODS Recent human and animal studies of beta-cell destruction and regeneration in type 1 diabetes are reviewed....

Although treatment of multiple sclerosis (MS) with the type I interferon (IFN) IFN-β lowers disease activity, the role of endogenous type I IFN in MS remains controversial. We studied CD4+ T cells and CD4+ T cell subsets, monocytes and dendritic cells by flow cytometry and analysed the relationship with endogenous type I IFN-like activity, the effect of IFN-β therapy, and clinical and magnetic ...

results of the 100 klebsiella isolates, 41 (41%) demonstrated resistance or reduced susceptibility to ceftazidime and/or aztreonam and 35% (n = 35) were esbl-producers. twenty-eight (8o%) of the esbl-producing isolates carried the blactx-m type genes. based on pcr assays and sequencing of blactx-m genes, ctx-m-1, ctx-m-2 and ctx-m-9 were identified in 21 (60%), 15 (42%) and nine (34%) of these ...

The transforming growth factor βs (TGF-β) belong a family of structurally related, dimeric, disulfide-linked polypeptides that includes five TGF-β isoforms, activins, inhibins, Müllerian inhibiting substance, bone morphogenic proteins, and products of the Xenopus Vg1 and Drosophila decapentaplegic (dpp) genes (reviewed in Rizzino, 1988; Massagué, 1990; Roberts and Sporn, 1990). In mammals, thre...

OBJECTIVE Although glucagon-secreting α-cells and insulin-secreting β-cells have opposing functions in regulating plasma glucose levels, the two cell types share a common developmental origin and exhibit overlapping transcriptomes and epigenomes. Notably, destruction of β-cells can stimulate repopulation via transdifferentiation of α-cells, at least in mice, suggesting plasticity between these ...

Preservation and regeneration of β cell endocrine function is a long-sought goal in diabetes research. Defective insulin secretion from β cells underlies both type 1 and type 2 diabetes, thus fueling considerable interest in molecules capable of rebuilding β cell secretion capacity. Though early work in rodents suggested that regeneration might be possible, recent studies have revealed that agi...