To determine if the murine insulinoma, β-TC-6, is a suitable substitute for primary pancreatic β-cells in the study of βcell functional heterogeneity, we used three distinct functional assays to ascertain the cell line’s response to glucose or a glucose analog. These assays include: (i) a 2-NBDG uptake assay; (ii) a calcium influx assay, and; (iii) a quinacrine secretion assay. We show that a p...

Background: The extracellular xylanase secreted by microorganisms is a hydrolytic enzyme, which arbitrarily cleaves the β-1, 4 backbone of the polysaccharide xylan; an enzyme used in the food processing, bio-pulping and bio-bleaching. The commercial production of the xylanase is limited because of a higher cost involvement, which can be overcome by the cost-effective production...

objective: irinotecan is a botanical derivative and an anti-cancer drug with cytotoxic and genotoxic effects. the present study evaluated the effect of lactobacillus plantarum a7 on the genotoxic activity of irinotecan in a hepatocellular carcinoma cell line (hepg2) by comet assay. materials and methods: hepg2 were incubated with irinotecan (100 µm), heat-killed cells (0.025 µg/ml) + irinotecan...

Background: Human β-like globin genes regulaon during development from embyonic to adult stage results in generaon of different types of hemoglobin with different funcons. As β-thalassemia and sickle cell disease are disorders of β-globin chain, epigenec drugs such as thalidomide and sodium butyrate which can induce γ-globin gene are considered as a novel therapeuc approach. Drugs effec...

background: human β-like globin genes regulaon during development from embyonic to adult stage results in generaon of different types of hemoglobin with different funcons. as β-thalassemia and sickle cell disease are disorders of β-globin chain, epigenec drugs such as thalidomide and sodium butyrate which can induce γ-globin gene are considered as a novel therapeuc approach. drugs effecve...

There is evidence from isolated (in vitro) cell experiments that ZnO and TiO2 may induce free radical formation in the presence of light and this free-radical generation may cause cell damage (photo-genotoxicity with ZnO). However, recent work suggests that the photogenotoxicity seen in these studies (with ZnO) may be due to an UV-induced experimental artifact in an in vitro assay, rather than ...

an appropriate differentiation of distinct human cd4+ t cell subset is critical for manipulating these cells for using in immunity related diseases. despite various attempts to clarify the role of different factors involved in th17 differentiation, many crucial contradictions yet remained to be optimized. although it has been shown that the differentiation of in-vitro th17 cells culture conditi...

OBJECTIVE β-Cell turnover and its potential to permit β-cell regeneration in adult primates are unknown. Our aims were 1) to measure β-cell turnover in adult nonhuman primates; 2) to establish the relative contribution of β-cell replication and formation of new β-cells from other precursors (defined thus as β-cell neogenesis); and 3) to establish whether there is an adaptive increase in β-cell ...

during antigen capture and processing, mature dendritic cells (dc) express large amounts of peptide-mhc complexes and accessory molecules on their surface. we investigated the role of ifn-β in induction hla-g expression on the monocyte derived dc and cytokine profile in diabetes type 1. we accomplished secretary pattern and total cytokine production of the th1 cytokine (il-2, γifn) and th2 cyto...

The emergence of drug resistant strains of Plasmodium spp. creates a critical need for the development of novel antimalarials. Formation of hemozoin, a crystalline heme detoxification process vital to parasite survival serves as an important drug target. The quinoline antimalarials including chloroquine and amodiaquine owe their antimalarial activity to inhibition of hemozoin formation. Though ...