نتایج جستجو برای: steroidogenic acute regulatory star
تعداد نتایج: 749430 فیلتر نتایج به سال:
background: it has been proposed that oxidative stress may contribute to the development of testicular abnormalities in diabetes. morus alba leaf extract (mae) has hypoglycemic and antioxidant properties. we, therefore, explored the impact of the administration of mae on steroidogenesis in diabetic rats. methods: to address this hypothesis, we measured the serum level of glucose, insulin, and f...
Genomic DNA from 19 Japanese patients with congenital lipoid adrenal hyperplasia (lipoid CAH) representing 16 different families was examined to identify the genetic alterations of steroidogenic acute regulatory protein (StAR). Ten of 19 patients had a 46,XX karyotype and nine had a 46,XY karyotype. Six of the 46,XX patients have experienced spontaneous pubertal changes including breast develop...
Background: Methotrexate (MTX) is used as an antineoplastic drug in the treatment of various cancers and non -cancerous diseases. Ovarian ablation is considered to be effective in delaying recurrence of cancer and increasing survival in young women. When added to chemotherapy, it is less clear that this technique is effective. Uniqueness of the present study is that we used ovariectomized (OVX)...
Recently, we demonstrated that triiodothyronine (T(3)) stimulated steroid hormone biosynthesis and steroidogenic acute regulatory (StAR) protein expression in mLTC-1 mouse Leydig tumor cells through the mediation of steroidogenic factor 1 (SF-1). We now report a dual response mechanism of T(3) on steroidogenesis and StAR expression, and on LH receptor (LHR) expression and binding in mLTC-1 cell...
In this study, we report the cDNA cloning of hamster adrenal steroidogenic acute regulatory (StAR) protein and the effect of adrenocorticotrophin (ACTH) on its expression in vivo. A hamster adrenal cDNA library was screened using an 852 bp fragment obtained by polymerase chain reaction; this fragment corresponds to the entire coding sequence (CDS) of the hamster adrenal StAR cDNA. Ten clones of...
Steroidogenic acute regulatory protein (StAR) plays a critical role in steroid hormone biosynthesis, presumably by facilitating the delivery of cholesterol to P450scc in the inner mitochondrial membranes. StAR is synthesized as a 37-kDa preprotein that is processed to a 30-kDa mature form by cleavage of an N-terminal mitochondrial import sequence. To identify structural features required for St...
Brominated flame retardants (BFRs) and brominated dioxins are emerging persistent organic pollutants that are ubiquitous in the environment and can be accumulated by wildlife and humans. These chemicals can disturb endocrine function. Recent studies have demonstrated that one of the mechanisms of endocrine disruption by chemicals is modulation of steroidogenic gene expression or enzyme activiti...
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