sitosterol/hypoxia

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The effect of moderate hypoxia on free sterols: content and pattern in white matter.

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Wistar rats underwent moderate hypoxia by exposing them to a respiratory gas mixture containing 7% oxygen, for 30 min. The myelin was analyzed at 4 h 24 h, day 14, and day 60 after hypoxia. The group of neutral lipids isolated from myelin was analyzed by GC-MS (gas chromatography-mass spectrometry)

Patterns of free and esterified sterol fractions of the cerebral white matter in severe and moderate experimental hypoxia.

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Cerebral sterols were examined in Wistar strain rats, subjected 4 h, 24 h, 14 days or 2 months earlier to severe (2% oxygen) and moderate (7% oxygen) experimental hypoxia. From brains of the experimental animals myelin was isolated and examined by gas chromatography coupled with mass spectrometry

Screening of anti-hypoxia/reoxygenation agents by an in vitro model. Part 1: Natural inhibitors for protein tyrosine kinase activated by hypoxia/reoxygenation in cultured human umbilical vein endothelial cells.

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Protein tyrosine kinase (PTK) signaling pathways play important roles in ischemia/reperfusion (I/R) or hypoxia/reoxygenation (H/R) injuries. Inhibition of PTK activation can protect against I/R- or H/R-induced damages. As one part of our work for seeking bioactive compounds from natural sources

[Chemical Constituents with Anti-hypoxia Activity from Saussurea involucrata].

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OBJECTIVE To investigate the chemical constituents with anti-hypoxia activity from Saussurea involucrata. METHODS The chemical constituents, isolated and purified by column chromatography from Saussurea involucrata, were identified by several spectroscopic methods. The anti-hypoxic activities of

Screening of anti-hypoxia/reoxygenation agents by an in vitro method. Part 2: Inhibition of tyrosine kinase activation prevented hypoxia/reoxygenation-induced injury in endothelial gap junctional intercellular communication.

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In this study, we demonstrated that hypoxia/reoxygenation (H/R) induced an injury in gap junctional intercellular communication (GJIC) after 2 h of reoxygenation in cultured HUVEC. Free radical scavenger (DMSO) and antioxidant (SOD) did not prevent this GJIC injury at all. Protein kinase C inhibitor

β-Sitosterol Protects against Myocardial Ischemia/Reperfusion Injury via Targeting PPARγ/NF-κB Signalling.

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Myocardial ischemia/reperfusion (I/R) injury is a clinically severe complication, which can cause high rates of disability and mortality particularly in patients with myocardial infarction, yet the molecular mechanisms underlying this process remain unclear. This study aimed to explore the

β-Sitosterol enhances cellular glutathione redox cycling by reactive oxygen species generated from mitochondrial respiration: protection against oxidant injury in H9c2 cells and rat hearts.

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Herba Cistanches (Cistanche deserticola Y. C. Ma) is a 'Yang-invigorating' tonic herb in Chinese medicine. Preliminary chemical analysis indicated that β-sitosterol (BS) is one of the chemical constituents in an active fraction of Herba Cistanches. To investigate whether BS is an active ingredient

Dalspinin isolated from Spermacoce hispida (Linn.) protects H9c2 cardiomyocytes from hypoxic injury by modulating oxidative stress and apoptosis.

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Spermacoce hispida (S.hispida), a potential medicinal plant has been traditionally used as an antibacterial, antieczemic, antihypertensive, antidiabetic and antihyperlipidemic agent. Although, this plant has been claimed to protect against oxidative injury and inflammatory conditions

Network Pharmacology to Uncover the Molecular Mechanisms of Action of LeiGongTeng for the Treatment of Nasopharyngeal Carcinoma

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BACKGROUND Nasopharyngeal carcinoma (NPC) is a common head and neck cancer epidemic in southern China and southeast Asia. LeiGongTeng has been widely used for the treatment of cancers. The purpose of this study was to determine the pharmacological mechanism of action of LeiGongTeng in the treatment

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