Results 51 to 60 of about 42,982 (263)

Synthesis, Spectroscopic and Semiempirical Studies of New Quaternary Alkylammonium Conjugates of Sterols

Molecules, 2013
New quaternary alkylammonium conjugates of steroids were obtained by two step reaction of sterols (ergosterol, cholesterol, dihydrocholesterol) with bromoacetic acid bromide, followed by bimolecular nucleophilic substitution with a long chain tertiary ...
Bogumił Brycki, Hanna Koenig, Iwona Kowalczyk, Tomasz Pospieszny   +3 more
doaj   +1 more source

Hepatoma‐Derived Growth Factor Coordinates STAT3 Pathway and Exosome‐Mediated Intrahepatic Crosstalk to Control Hepatic Steatosis and MASLD

Advanced Science, EarlyView.
Hepatic HDGF as a key mediator in coordinating hepatic steatosis and intrahepatic crosstalk in MASLD. Activation of HDGF facilitates its interaction with both STAT3 and S6K1, driving the S6K1‐dependent STAT3 phosphorylation and subsequently enhancing hepatic lipogenesis.
Jian Wen, Dong Ding, Zengpeng Zheng, Xufeng Chen, Wenjing Li, Jiaxin Shen, Zhiwei Huang, Peng Tan, Junjie Bai, Xia Fang, Baofang Xing, Puyuan Hu, Linghao Xu, Haokai Yu, Yixi Wang, Zongzhe Jiang, Yang Long, Tiejun Zhou, Mingxin Ye, Yu Jiang, Aoyuan Cui, Hong Li, Qiurong Ding, Yong Xu, Yu Li, Weitong Su, Feng Shen, Chenlin Gao, Wenguang Fu   +28 more
wiley   +1 more source

Methyl Ether-Derivatized Sterols and Coprostanol Produced via Thermochemolysis Using Tetramethylammonium Hydroxide (TMAH)

Molecules, 2019
Sterols are widely distributed in nature from lipids in organisms to sediments. As a conventional method, extraction and derivatization with TMS have been applied for sterol analysis, requiring a long preparation time for gas chromatography−mass ...
Masatoshi Nakakuni, Yoshimi Yamasaki, Nonoka Yoshitake, Keiko Takehara, Shuichi Yamamoto   +4 more
doaj   +1 more source

Microbial Odorant Detection Guides Drosophila Parasitoids Seeking Hosts in Fermenting Fruits

Advanced Science, EarlyView.
Yeast microbes in fermenting fruits attract both host flies and their parasitoid wasps. Female Leptopilina boulardi detect yeast‐emitted ethyl esters via two olfactory receptors, LbouOR167 and LbouOR136. A conserved residue, Leu159, is critical for binding these compounds, enabling female wasps to locate host‐rich habitats.
Yueqi Lu, Lan Pang, Wenqi Shi, Ting Feng, Zhi Dong, Yifeng Sheng, Sicong Zhou, Longtao Yu, Hao Guo, Ying Wang, Jiani Chen, Jianhua Huang   +11 more
wiley   +1 more source

Preparation, Component Identification, and Antioxidant Activity of Anthocyanins From Punica granatum “Tunisia”

AgriFood: Journal of Agricultural Products for Food, EarlyView.
The preparation for Tunisian pomegranate anthocyanin extract. The molecular mechanisms underlying the antioxidant effects of these compounds were investigated using network pharmacology and molecular docking. Antioxidant activity was evaluated through DPPH, ABTS, and FRAP assays, whereas the effects on oxidative stress and inflammation were examined in
Jing Zhang, Xu‐han Yang, Meng‐qi Zhang, Xu Guo, Ning‐yang Li, Fang‐yu Long, Chao Liu   +6 more
wiley   +1 more source

Structural basis for plant plasma membrane protein dynamics and organization into functional nanodomains

eLife, 2017
Plasma Membrane is the primary structure for adjusting to ever changing conditions. PM sub-compartmentalization in domains is thought to orchestrate signaling. Yet, mechanisms governing membrane organization are mostly uncharacterized. The plant-specific
Julien Gronnier, Jean-Marc Crowet, Birgit Habenstein, Mehmet Nail Nasir, Vincent Bayle, Eric Hosy, Matthieu Pierre Platre, Paul Gouguet, Sylvain Raffaele, Denis Martinez, Axelle Grelard, Antoine Loquet, Françoise Simon-Plas, Patricia Gerbeau-Pissot, Christophe Der, Emmanuelle M Bayer, Yvon Jaillais, Magali Deleu, Véronique Germain, Laurence Lins, Sébastien Mongrand   +20 more
doaj   +1 more source

Lateral transfer of tetrahymanol-synthesizing genes has allowed multiple diverse eukaryote lineages to independently adapt to environments without oxygen

Biology Direct, 2012
Sterols are key components of eukaryotic cellular membranes that are synthesized by multi-enzyme pathways that require molecular oxygen. Because prokaryotes fundamentally lack sterols, it is unclear how the vast diversity of bacterivorous eukaryotes that
Takishita Kiyotaka, Chikaraishi Yoshito, Leger Michelle M, Kim Eunsoo, Yabuki Akinori, Ohkouchi Naohiko, Roger Andrew J   +6 more
doaj   +1 more source

Urinary Bladder Sterols.

Experimental Biology and Medicine, 1957
Summary1. Urinary bladders of many species were analyzed for cholesterol and “fast-acting” (δ7) sterol. Rodents showed the highest content of (δ7) sterol, the dog an intermediate level, and livestock very little. In rodents and in the dog 60-84% of the δ7-sterol was 7-dehydrocholesterol. All bladder sterol was unesterified. 2. The sterols were found to
J S, FINLAYSON, J L, GAYLOR, C A, BAUMANN   +2 more
openaire   +2 more sources

Evaluation of the methods based on triglycerides and sterols for the detection of hazelnut oil in olive oil

Grasas y Aceites, 2007
Two analytical methods, based on the difference between theoretical and empirical triglycerides and the ratios between some free and esterified sterols have been checked to determine their usefulness in detecting the presence of low quantities of any ...
Diego L. García-González, María Viera, Noelia Tena, Ramón Aparicio   +3 more
doaj   +1 more source

Setting the curve: the biophysical properties of lipids in mitochondrial form and function

Journal of Lipid Research
Mitochondrial membranes are defined by their diverse functions, complex geometries, and unique lipidomes. In the inner mitochondrial membrane, highly curved membrane folds known as cristae house the electron transport chain and are the primary sites of ...
Kailash Venkatraman, Christopher T. Lee, Itay Budin   +2 more
doaj   +1 more source