“
“Objective: Dose-dependent side effects related
to myo-inositol (MI) oral administration represent a significant shortcoming for its clinical use. Aiming to search for a pharmaceutical form able to be better absorbed, the pharmacokinetic (PK) profile of the new manufactured MI soft gelatin capsule form was evaluated and compared with the commercially available MI powder.\n\nResearch design and methods: A single-dose relative trial, consisting of four phases, was performed LY3039478 on 20 healthy volunteers who received different doses of MI powder and MI soft gelatin capsules. PK profiles related to the two pharmaceutical forms were obtained by analysis of MI plasma concentration, and the respective MI bioavailability
was compared.\n\nResults: The administration of MI powder and MI soft gelatin capsules resulted in a different bioavailability. MI soft gelatin capsule form showed similar PK parameters compared with three times higher doses of MI in powder form.\n\nConclusions: MI soft gelatin capsules displayed an improved bioavailability, allowing to substantially reduce the administered dose and to minimize the dose-dependent side effects. Considering the number of conditions in which MI supplementation is recommended, this evidence could support a broader use of MI in clinical practice.”
“Microtubules (MTs) are essential for many processes in plant cells. MT-associated proteins (MAPS) influence MT polymerization dynamics and enable them to perform their Selleck BI2536 functions. The molecular chaperone Hsp90 has been shown to associate with MTs in animal and plant cells. However, the role of Hsp90-MT binding in plants has not yet been investigated. Here, we show that Hsp90 associates with cortical MTs in tobacco cells and decorates MTs in the phragmoplast. Further, we show that tobacco H5p90_MT binds directly to polymerized MTs in vitro. The inhibition of Hsp90 by geldanamycin (GDA) severely impairs MT re-assembly after cold-induced de-polymerization. Our results indicate that the Selisistat plant Hsp90
interaction with MTs plays a key role in cellular events, where MT re-organization is needed. (c) 2012 Elsevier GmbH. All rights reserved.”
“Vitamin A deficiency causes a marked reduction in the number of T and B cells in the small intestinal tissues. The vitamin A metabolite retinoic acid imprints lymphocytes with gut-homing specificity upon antigenic stimulation. In the small intestinal lamina propria, Peyer’s patches, and mesenteric lymph nodes, there are dendritic cells capable of producing retinoic acid. Their capacity depends on the expression of retinal dehydrogenases (RALDH). RALDH2, encoded by Aldh 1a2, is a major isoform of RALDH in the intestinal dendritic cells under specific pathogen-free conditions, and can be induced by multiple factors constitutively present or induced in the small intestinal microenvironment.