Background:Neurogenin-3(NEUROG3) is expressed in endocrine progenitor cells and is required for endocrine-cell development in the pancreas and *** NEUROG3 gene(NEUROG3) is therefore a candidate for the cause of a newl...
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Background:Neurogenin-3(NEUROG3) is expressed in endocrine progenitor cells and is required for endocrine-cell development in the pancreas and *** NEUROG3 gene(NEUROG3) is therefore a candidate for the cause of a newly discovered autosomal recessive disorder characterized by generalized malabsorption and a paucity of enteroendocrine ***:We screened genomic DNA from three unrelated patients with sparse enteroendocrine cells for mutations of *** then tested the ability of the observed mutations to alter NEUROG3 function,using in vitro and in vivo ***:The patients had few intestinal enteroendocrine cells positive for chromogranin A,but they had normal numbers of Paneth’s,goblet,and absorptive *** identified two homozygous mutations in NEUROG3,both of which rendered the NEUROG3 protein unable to activate NEUROD1,a downstream target of NEUROG3,and compromised the ability of NEUROG3 to bind to an E-box element in the NEUROD1 *** injection of wild-type but not mutant NEUROG3 messenger RNA into xenopus embryos induced NEUROD1 ***:A newly discovered disorder characterized by malabsorptive diarrhea and a lack of intestinal enteroendocrine cells is caused by loss-of-function mutations in NEUROG3.
The major constituent from the hexane extract of the seeds ofP. insignis is GFC (garcinielliptone FC). Doses of 25, 50 and 75 mg/kg of GFC were aseptically suspended in 0.05% Tween 80 dissolved in 0.9% saline (vehi...
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The major constituent from the hexane extract of the seeds ofP. insignis is GFC (garcinielliptone FC). Doses of 25, 50 and 75 mg/kg of GFC were aseptically suspended in 0.05% Tween 80 dissolved in 0.9% saline (vehicle) and orally administered for 30, 90 and 120 consecutive days to adult Swiss mice. In this work, the repeated oral administration, in animals of both sexes, demonstrates that this compound is not able to induce mortality and/or behavioral changes in adult mice. In addition, body weight gain, feed intake and disposal of excreta were not altered by the administration of this compound with repeated doses. Furthermore, no differences in weight and macroscopic structure of the brain, liver, kidney, lung, heart and spleen between groups of male and female adult mice were observed after treatment. During the periods of treatment, GFC produced no significant changes on haematological and biochemical parameters in male and female mice treated with all doses used. The aim of this study was to investigate the toxicological potential of GFC through behavioral, hematological, biochemical and morphological parameters in animals in order to ensure the safe use ofPlatonia insignis in folk medicine.
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