Results 51 to 60 of about 374,594 (305)

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

The arteriolar vasodilatation model of vibrio cholerae induced diarrhoeal disease [PDF]

, 2018
Secretory diarrhoeal disease caused by enterotoxins produced by pathogenic bacteria is characterised by severe fluid loss into the intestine. A prevalent explanation for such high rates of loss, such as occur in episodes of cholera, is that intestinal ...
Lucas, Michael
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Microbial Interactions with Intestinal Lipid Digestion and Absorption: Emerging Targets for Metabolic Disorders

Research
Dietary fat undergoes digestion and absorption before entering enterocytes, where lipids are re-esterified and packaged into chylomicrons for lymphatic transport.
Jie Yin, Mingliang Zhang, Weimin Jiang, Xingguo Huang, Yulong Yin   +4 more
doaj   +1 more source

Intestinal Absorption of Bile Salts

Canadian Journal of Gastroenterology, 1990
Bile acids are secreted from the liver into the duodenum where they aid in the digestion and absorption of dietary lipids. Absorption of bile acids occurs through both ionic and nonionic diffusion in the jejunum and colon and through an active sodium ion-
Karen Madsen
doaj   +1 more source

Combination of a biopharmaceutic classification system and physiologically based pharmacokinetic models to predict absorption properties of baicalein in vitro and in vivo

Journal of Traditional Chinese Medical Sciences, 2021
Objective: To determine the in vitro and in vivo absorption properties of active ingredients of the Chinese medicine, baicalein, to enrich mechanistic understanding of oral drug absorption.
Yang Liu, Jing Sun, Linying Zhong, Yu Li, A Na Er, Tong Li, Le Yang, Ling Dong   +7 more
doaj   +1 more source

Prebiotic effects: metabolic and health benefits [PDF]

, 2010
The different compartments of the gastrointestinal tract are inhabited by populations of micro-organisms. By far the most important predominant populations are in the colon where a true symbiosis with the host exists that is a key for well-being and ...
Agnes Meheust, Anne L. McCartney, Audrey M. Neyrinck, Balsari, Ben, Bernd Stahl, Bernhard Watzl, Blaut, Brommage, Caderni, Caers, Cashman, Cashman, Chassard, Coudray, Cummings, Danielle Wolvers, de Vrese, Dughera, Engelhardt, Fava, Francisco Guarner, Franck, Frederique Respondek, Gibson, Girrbach, Glenn R. Gibson, Gray, Griffin, Hanai, Hania Szajewska, Harmsen, Hawthorne, Hudson, Hughes, Hussey, Ian Rowland, Irvine, Irvine, Kanauchi, Kelly, Kevin Whelan, Kim, Klobukowski, Kobayashi, Laurent Léotoing, Lesley Hoyles, Levitt, Lien do, Macfarlane, Macfarlane, Marcel Roberfroid, Marie-Jeanne Davicco, Mathey, Morand, Murphy, Nathalie M. Delzenne, Ng, O'Connor, O'May, Ohta, Ohta, Patrice D. Cani, Perrin, Pierre, Quigley, Rayssiguier, Reddy, Remesy, Reshef, Reuter, Richardson, Roberfroid, Roberfroid, Roberfroid, Roberfroid, Roberfroid, Robert Rastall, Rondon, Rowland, Sakaguchi, Schaafsma, Sellon, Siong, Suau, Taper, van Dokkum, Veronique Coxam, Vulevic, Wada, Walker, Wilson, Yohann Wittrant, Zoetendal, Zoetendal   +94 more
core   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Studies of Slc30a10 Deficiency in Mice Reveal That Intestinal Iron Transporters Dmt1 and Ferroportin Transport ManganeseSummary

Cellular and Molecular Gastroenterology and Hepatology
Background & Aims: SLC11A2 (DMT1) and SLC40A1 (ferroportin) are essential for dietary iron absorption, but their role in manganese transport is debated.
Milankumar Prajapati, Jared Z. Zhang, Grace S. Chong, Lauren Chiu, Courtney J. Mercadante, Heather L. Kowalski, Olga Antipova, Barry Lai, Martina Ralle, Brian P. Jackson, Tracy Punshon, Shuling Guo, Mariam Aghajan, Thomas B. Bartnikas   +13 more
doaj   +1 more source

Reduction in jejunal fluid absorption in vivo through distension and cholinergic stimulation not attributable to enterocyte secretion [PDF]

, 2018
Jejunal fluid absorption in vivo was reduced by distension and by hydrostatic pressure and further declined on adding E. coli STa enterotoxin but no net fluid secretion was detected.
Graham, V., Kenward, H., Lucas, M., McColl, S., McNaughton, E., Sabir, S., Tainsh, P., Turkington, C., Watson, P.   +8 more
core   +1 more source