نتایج جستجو برای: 22 dehydrocholesterol
تعداد نتایج: 212275 فیلتر نتایج به سال:
Four randomised controlled trials (RCTs) and one RCT metaanalysis are featured in the Journal this month. The latter is a review of trials of newer-generation antidepressants and cognitive–behavioural therapy (CBT) for adolescent depression (Dubicka et al, pp. 433–440). In an area of clinical practice plagued by controversy, the authors of this review were able to contribute the finding that ad...
We report a family with co-occurring disorders including neuroblastoma in the first child conceived by in-vitro fertilization with history of sodium valproate use by the mother during pregnancy and mosaic trisomy 22 in the third child. We discuss the possibility of an association between the disorders but conclude that no firm aetiological connection can be established between the different dis...
gracilariopsis persica (rhodophyta) is one of the most abundant algae, introduced newly from the indian ocean. in this study, the main sterols of the algae have been isolated and identified. separation and purification of the compounds was carried out on silica gel and sephadex lh20 column chromatography (cc) and high performance liquid chromatography (hplc) to obtain five pure compounds 1-5....
Three papers in the Journal this month consider issues related to measuring, understanding and treating mental ill health in childhood. Baron-Cohen et al (pp. 500–509) undertook a study to establish the prevalence of autism-spectrum conditions in Cambridgeshire using two case ascertainment methods. First, a survey of individuals on the Special Educational Needs register and second, a screening ...
Campesterol is an important precursor for many sterol drugs, e.g. progesterone and hydrocortisone. In order to produce campesterol in Yarrowia lipolytica, C-22 desaturase encoding gene ERG5 was disrupted and the heterologous 7-dehydrocholesterol reductase (DHCR7) encoding gene was constitutively expressed. The codon-optimized DHCR7 from Rallus norvegicus, Oryza saliva and Xenapus laevis were ex...
Novel metabolic pathways initiated by the enzymatic action of CYP11A1 on 7DHC (7-dehydrocholesterol), ergosterol, vitamins D3 and D2 were characterized with help of chemical synthesis, UV and mass spectrometry and NMR analyses. The first pathway follows the sequence 7DHC→22(OH)7DHC → 20,22(OH)27DHC → 7DHP (7-dehydropregnenolone), which can further be metabolized by steroidogenic enzymes. The re...
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