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Can ‘toxic’ bilirubin treat a variety of illnesses?
Generations of medical and biology students have been instilled with a dim view of bilirubin. Spawned when the body trashes old red blood cells, the molecule is harmful refuse and a sign of illness. High blood levels cause jaundice, which turns the eyes and skin yellow and can signal liver trouble. Newborns can’t process the compound, and although high levels normally subside, a persistent surplus can cause brain damage. Yet later this year up to 40 healthy Australian volunteers may begin receiving infusions of the supposedly good-for-nothing molecule. They will be participating in a phase 1 safety trial, sponsored ...
Source: ScienceNOW - June 8, 2023 Category: Science Source Type: news

Gut Flora Mediates the Rapid Tolerance of Electroacupuncture on Ischemic Stroke by Activating Melatonin Receptor through Regulating Indole-3-Propionic Acid
This study aimed to clarify the mechanisms of action of treatments of cerebral ischemic stroke from the perspective of gut microecology. We used a mouse model and cell cultures to investigate the effects of EA on the intestinal microflora in mice models of middle cerebral artery occlusion (MCAO) and the mechanisms underlying the antioxidant activities of metabolites. Fecal microbiota transplantation (FMT) was used to validate the roles of gut microbiota. Metabolomic analysis was performed to characterize the metabolic profile differences between the mice in the EA + MCAO and MCAO groups. Gavaging with feces relieved brain ...
Source: The American Journal of Chinese Medicine - April 27, 2022 Category: Complementary Medicine Authors: Shan Li Xiaoyong Zhao Feihong Lin Xuqing Ni Xia Liu Chang Kong Xinyu Yao Yunchang Mo Qinxue Dai Junlu Wang Source Type: research

Targeting oxidative stress, a crucial challenge in renal transplantation outcome
Free Radic Biol Med. 2021 Apr 20:S0891-5849(21)00258-6. doi: 10.1016/j.freeradbiomed.2021.04.023. Online ahead of print.ABSTRACTDisorders characterized by ischemia/reperfusion (I/R) are the most common causes of debilitating diseases and death in stroke, cardiovascular ischemia, acute kidney injury or organ transplantation. In the latter example the I/R step defines both the amplitude of the damages to the graft and the functional recovery outcome. During transplantation the kidney is subjected to blood flow arrest followed by a sudden increase in oxygen supply at the time of reperfusion. This essential clinical protocol c...
Source: Free Radical Biology and Medicine - April 23, 2021 Category: Biology Authors: Carcy Romain Cougnon Marc Poet Mallorie Durandy Manon Sicard Antoine Counillon Laurent Blondeau Nicolas Hauet Thierry Tauc Michel Pisani Didier F Source Type: research

Prophylactic supplementation of 20-HETE ameliorates hypoxia/reoxygenation injury in pulmonary vascular endothelial cells by inhibiting apoptosis.
Abstract Hypoxia reoxygenation (HR) injury perturbs structural and functional syncytium in lung tissues. It is commonly implicated in conditions such as stroke, lung transplant or severe pneumonia. In the present study, we investigated the cytoprotective action of 20-hydroxyeicosatetraenoic acid (20-HETE) on pulmonary vascular endothelial cells (PMVECs) under normoxic and hypoxic niche followed by HR. 20-HETE pretreatment showed a protective effect at a concentration of 1μM as there was a marked increase (20%) in the cell viability compared to control and HR groups. Pretreatment of 20-HETE in HR induced injury de...
Source: Acta Histochemica - November 5, 2019 Category: Biochemistry Authors: Sugumaran P, Narayanan V, Zhu D, Medhora M, Jacobs ER, Chandramohan Y, Selvaraj V, Dhanasekaran A Tags: Acta Histochem Source Type: research

SOD3 overexpression alleviates cerebral ischemia ‐reperfusion injury in rats
ConclusionOur results indicated that MSCs transfected withSOD3 can effectively alleviate cerebral ischemia ‐reperfusion injury in rats.
Source: Molecular Genetics & Genomic Medicine - August 27, 2019 Category: Genetics & Stem Cells Authors: Shuaiqi Sun, Ning Gao, Xiqi Hu, Han Luo, Jun Peng, Ying Xia Tags: ORIGINAL ARTICLE Source Type: research

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