Results 111 to 120 of about 147,210 (256)

Oral Nanomicelle‐Mediated Sequential Butyrate Production in the Intestine for Ulcerative Colitis and Immunosuppression Treatment

open access: yesAdvanced Science, EarlyView.
After oral administration, inodorous GLU‐BA self‐assembles into nanomicelles in aqueous environments to resist premature gastric adsorption. Upon reaching the intestine, endogenous esterases rapidly cleave the built‐in ester bonds in these nanomicelles to release BA and GLU, with GLU further metabolized by gut microbiota to gradually generate BA ...
Feifei Xin   +9 more
wiley   +1 more source

Structure and Function of a Multi‐Megadalton Virus‐Like Proteolytic Dodecahedron

open access: yesAngewandte Chemie, EarlyView.
Zuzalysin, a virulence metallopeptidase of the periodontal pathogen Porphyromonas gingivalis, is secreted as a latent, flexible ≈95‐kDa monomer. Calcium triggers cysteine‐switch activation and hierarchical assembly into pentamers, bipentamers, tripentamers, and a ≈5.6‐MDa, ≈355‐Å dodecahedron. Structures at 1.8–3.6 Å reveal a virus‐sized catalytic cage
Mariusz Madej   +20 more
wiley   +2 more sources

Bacterial dysbiosis risk prediction according to vaginal normobiota indicator [PDF]

open access: yes, 2020
Vaginal bacterial dysbiosis is evident by the progressive growth of obligate and optional anaerobic bacteria, myco- and ureaplasmas and fungi against the background of a sharp decrease in the number of lactobacilli.
Hruzevskyi, O.
core  

Leveraging Microphysiological Systems to Facilitate Neutrophil‐Based Cancer Immunotherapy

open access: yesAdvanced Science, EarlyView.
Microphysiological systems are emerging as powerful human‐relevant platforms for studying neutrophil biology in cancer. Current applications of spheroids, organoids, and organ‐on‐a‐chip models are reviewed, together with future opportunities in behaviorome profiling, multi‐omics integration, personalized medicine, immune crosstalk, and multi‐organ ...
Shuai Shao   +2 more
wiley   +1 more source

Chronic Stress Promotes Gastric Cancer Metastasis by Inducing Microbiota‐Associated Kynurenine Accumulation and Macrophage Remodeling

open access: yesAdvanced Science, EarlyView.
Chronic stress reshapes the gut microbiota and enriches Lactobacillus reuteri, promoting microbiota‐associated kynurenine accumulation through altered tryptophan metabolism. Kynurenine drives immunosuppressive remodeling of tumor‐associated macrophages through TNFR2–C/EBPβ signaling, thereby enhancing gastric cancer dissemination.
Sicheng Zhao   +9 more
wiley   +1 more source

Hidden Gut Dysbiosis in Apparently Healthy Adults

open access: yes
(1) Background: Intestinal dysbiosis has been implicated in numerous gastrointestinal, metabolic, and immune-mediated disorders; however, data regarding its prevalence in asymptomatic adults remain limited.
Klavio Pine   +4 more
core   +1 more source

Opioid-induced microbial dysbiosis

open access: yes, 2023
The aim of this bachelor thesis is to describe the consequences of opioids in relation to the gut microbiome. Chronic opioid use induces microbial dysbiosis in the gut, where both functional and structural changes in the composition of the microbiome ...
Popjak, Šimon
core  

Gut Microbiota‐Derived Indole‐3‐Propionic Acid Alleviates Diabetic Osteoporosis Through Nrf2‐Mediated Ferroptosis Suppression

open access: yesAdvanced Science, EarlyView.
Diabetes‐associated dysbiosis is accompanied by reduced Clostridium abundance, impaired microbial tryptophan metabolism, and lower circulating indole‐3‐propionic acid (IPA). Exogenous IPA improves trabecular microarchitecture and bone formation and restores Nrf2‐associated antioxidant signaling in bone marrow mesenchymal stem cells, limiting iron ...
Jinwu Bai   +12 more
wiley   +1 more source

Effects of gut microbiota dysbiosis on the metabolism and pharmacokinetics of losartan in rats: from endogenous to ceftriaxone-induced dysbiosis

open access: yesFrontiers in Microbiology
IntroductionGut microbiota plays a key role in drug metabolism. While gut microbiota dysbiosis is known to contribute to hypertension pathogenesis, its impact on drug metabolism remains poorly considered.
Jiaxuan Xia   +11 more
doaj   +1 more source

Multifunctional Zinc Glycyrrhizinate‐Integrated Gel for Enhanced Probiotic Delivery and Alleviation of Acute and Spontaneous Colitis

open access: yesAdvanced Science, EarlyView.
Multifunctional oral delivery system—L. reuteri@ZGM—act as both a carrier and therapeutic adjuvant, providing ROS scavenging, and mucin‐interactive properties tailored to the IBD microenvironment. This bioactive gel safeguards L. reuteri from gastric degradation, enhances mucosal adhesion, and promotes long‐term retention at inflamed sites, thereby ...
Mengyun Peng   +8 more
wiley   +1 more source

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