Results 51 to 60 of about 659,249 (217)

Investigation of 20S-hydroxyvitamin D3 analogs and their 1α-OH derivatives as potent vitamin D receptor agonists with anti-inflammatory activities

open access: yes, 2018
20S-hydroxyvitamin D3 [20S(OH)D3] is anti-inflammatory and not hypercalcemic, suggesting its potential as a lead compound. In this study, side chain modified 20S(OH)D3 analogs (4, 13, 23 and 33) together with their 1α-OH derivatives were synthesized and ...
Srinivasa R. Marepally   +25 more
core   +1 more source

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

open access: yesAdvanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim   +13 more
wiley   +1 more source

TAp63γ and ΔNp63β promote osteoblastic differentiation of human mesenchymal stem cells: regulation by vitamin D3 Metabolites. [PDF]

open access: yesPLoS ONE, 2015
The transcription factor p63 is required for skeletal formation, and is important for the regulation of 1α,25(OH)2D3 receptor (VDR) in human mesenchymal stem cells (hMSC).
Kevin M Curtis   +3 more
doaj   +1 more source

Functionalization at C-12 of 1α,25-Dihydroxyvitamin D3 Strongly Modulates the Affinity for the Vitamin D Receptor (VDR)

open access: yes, 2016
The first synthesis of analogues of the natural hormone 1α,25-dihydroxyvitamin D3 (1a) with substituents at C-12 is reported. The following are the relative affinities of the novel compounds for the vitamin D receptor (VDR) compared to that of 1a (100%): 
Xosé C. González-Avión (2648098)   +1 more
core   +1 more source

Construction of Sabatier Volcanoes for CO2 Hydrogenation to C1‐2 Oxygenates Using Data‐Efficient Machine Learning

open access: yesAdvanced Science, EarlyView.
A new data‐efficient framework combining DFT calculations, a neural network model, and automated graph analysis of catalytic reaction networks is proposed and applied to CO2 hydrogenation on transition metal nanoparticles. The analysis shows how efficient C2 oxygenate production requires a balance between CHx formation, C–C coupling, protonation, and ...
Mikhail V. Polynski, Sergey M. Kozlov
wiley   +1 more source

Association of 25 (OH)-D3 Level With the CYP27B1 rs10877012 Variants and Metabolic Parameters in T2DM Patients From Kurdistan, Iraq

open access: yesAvicenna Journal of Medical Biochemistry, 2022
Background:There is an increasing prevalence of type 2 diabetes mellitus (T2DM) worldwide. The deficiency of vitamin D is a worldwide health problem that can increase susceptibility to T2DM.
Shna Ahmed Mohhamed   +4 more
doaj   +1 more source

24R,25-Dihydroxyvitamin D3 Promotes the Osteoblastic Differentiation of Human Mesenchymal Stem Cells

open access: yes, 2014
Although 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3] is considered the most biologically active vitamin D3 metabolite, the vitamin D3 prohormone, 25-hydroxyvitamin D3 [25(OH)D3], is metabolized into other forms, including 24R,25-dihydroxyvitamin D3 [24R,25 ...
Curtis, Kevin M   +3 more
core   +1 more source

The Natural Product Corramycin Acts as a DNA Gyrase Poison and Overcomes Fluoroquinolone Resistance in Mycobacterium tuberculosis

open access: yesAdvanced Science, EarlyView.
Corramycin, a myxobacterial natural product antibiotic, exhibits potent bactericidal activity against multidrug‐resistant Mycobacterium tuberculosis. The compound hijacks bacterial transporters such as BacA and OppABCD to enter the cell and inhibits DNA synthesis through a previously unrecognized mode of DNA gyrase poisoning, locking the enzyme in an ...
Franziska Fries   +25 more
wiley   +1 more source

Effect of different vitamin D3 metabolites on intestinal calcium homeostasis-related gene expression in broiler chickens

open access: yesRevista Brasileira de Zootecnia, 2018
The purpose of this study was to investigate the effects of vitamin D3 metabolites 1α-hydroxycholecalciferol (1α(OH)D3), 25-hydroxycholecalciferol (25(OH)2D3), and 1,25-dihydroxycholecalciferol (1,25(OH)2D3) on growth performance, bone quality, and ...
Felix Shih-Hsiang Hsiao   +4 more
doaj   +1 more source

Robust Photocatalytic Hydrogen Evolution Over a Conjugated Metal‐Organic Framework Heterojunction

open access: yesAdvanced Science, EarlyView.
We report a conjugated coordination polymer, Cd‐TMT (TMT = 1,3,5‐trimercaptotriazine), featuring an intrinsic molecular‐level charge transport network. The conjugated TMT ligands facilitate strong intra‐ligand charge transfer, while their ordered π‐π stacking along the [111] direction establishes a continuous pathway for directional electron migration,
Chunzhe Wang   +6 more
wiley   +1 more source

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