trimethylamine/hypoxia

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Intermittent Hypoxia and Hypercapnia Accelerate Atherosclerosis, Partially via Trimethylamine-Oxide.

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Obstructive sleep apnea (OSA) is a common disorder characterized by intermittent hypoxia and hypercapnia (IHC) during sleep. OSA has been shown to be a risk factor for atherosclerosis, but the relation of IHC to the induction or progression of atherosclerosis is not well understood. To dissect the

Alkalinization during re-oxygenation prevents functional damage by hyperglycaemic hypoxia.

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Hyperglycaemia impairs recovery from transient cerebral ischaemia: the importance of tissue acidification for this phenomenon has not been clarified in detail. We investigated this issue in a less complex in vitro preparation of isolated rat dorsal spinal roots exposed for 30 min to hyperglycaemic

Renal denervation improves chronic intermittent hypoxia induced hypertension and cardiac fibrosis and balances gut microbiota

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Aims: Investigate the effect of renal denervation (RDN) on chronic intermittent hypoxia (CIH) induced high blood pressure (BP) and cardiac injury, and explore whether the effect is associated with gut microbiota alteration and its

High-fat diet intake modulates maternal intestinal adaptations to pregnancy and results in placental hypoxia, as well as altered fetal gut barrier proteins and immune markers.

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Maternal obesity has been associated with shifts in intestinal microbiota, which may contribute to impaired barrier function Impaired barrier function may expose the placenta and fetus to pro-inflammatory mediators We investigated the impacts of diet-induced obesity in mice on maternal

Proton MR spectroscopy in infants with cerebral energy deficiency due to hypoxia and metabolic disorders.

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OBJECTIVE To investigate the similarities and differences of cellular energy deficiencies due to asphyxia and to impaired oxidative phosphorylation caused by enzyme deficiencies using localized 1H-MR spectroscopy of the brain. METHODS In 35 neonates and infants with a postconceptional age of

The effects of metabolic inhibition and acidification on force production in the rat uterus.

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The effects of hypoxia and intracellular acidification were examined on the mechanical properties of the non-pregnant and pregnant rat uterus. Isolated uteri were investigated during control conditions and in the presence of cyanide, to simulate hypoxia or the salts of weak acids and bases to change

Survival and metabolic responses to freezing by the water frog (Rana ridibunda).

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We studied the ability of the marsh frog Rana ridibunda to survive freezing exposure and the associated subsequent metabolic variations. This species that typically overwinters under water tolerates the conversion of 55% of its body water into ice. This ice content is attained after a few hours

Lactobacillus rhamnosus GG strain mitigated the development of obstructive sleep apnea-induced hypertension in a high salt diet via regulating TMAO level and CD4+ T cell induced-type I inflammation.

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Obstructive sleep apnea (OSA) and high salt content in modern diet has been particularly implicated in systemic hypertension, leading to increased morbidity and mortality. Gut dysbiosis, associated with increased risk of systemic immunological imbalance, plays a causal role in the development of

Droplet vitrification versus straw cryopreservation for spermatozoa banking in Persian sturgeon (Acipenser persicus) from metabolite point of view.

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Persian sturgeon (Acipenser persicus), a commercially valuable and critically endangered fish species has been suffering considerable declines in populations in the nature due to over-fishing, habitat destruction and marine pollution during past decades. Since there were no achievements in

Effects of metabolic inhibition and changes of intracellular pH on potassium permeability and contraction of rat uterus.

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1. We have investigated the role of changes of potassium efflux in the inhibition of uterine force produced by cyanide. K+ efflux (86Rb) was measured from pregnant and non-pregnant rat myometrial strips during metabolic inhibition with cyanide and following manoeuvres to displace intracellular pH

Efficient respiration on TMAO requires TorD and TorE auxiliary proteins in Shewanella oneidensis.

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Respiration on trimethylamine oxide (TMAO) allows bacterial survival under anoxia. In Shewanella oneidensis, Tor is the system involved in TMAO respiration and it is encoded by the torECAD operon. The torA and torC genes encode TorA terminal reductase and the TorC c-type cytochrome, respectively.

Mechanisms of hypoxic vasodilatation of isolated rat mesenteric arteries: a comparison with metabolic inhibition.

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1. Hypoxia (PO2 < 5 mmHg) decreased vessel tone in isolated rat mesenteric arteries precontracted with either high [K+] or the thromboxane analogue U46619. This response was not altered by N-nitro-L-arginine (L-NA) and indomethacin. 2. Simultaneous measurement of pHi and tension showed that the

Acidosis of rat dorsal vagal neurons in situ during spontaneous and evoked activity.

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1. Rat brainstem slices were taken for simultaneous measurements of intracellular pH (pHi) and membrane currents or potentials in dorsal vagal neurons, dialysed with the pH-sensitive dye BCECF. 2. Intrinsic intracellular buffering power was 18 mM per pH unit, as determined by exposure to

Diet, the Gut Microbiome and Heart Failure.

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The collection of microorganisms that live in coexistence within or on the host body has been referred to as the microbiota. In humans, such cohabitation is mostly seen in the gut, mainly in the colon. The gut microbiome is acquired from the environment and is modified mostly by the diet. There are

Oxygen regulated gene expression in facultatively anaerobic bacteria.

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In facultatively anaerobic bacteria such as Escherichia coli, oxygen and other electron acceptors fundamentally influence catabolic and anabolic pathways. E. coli is able to grow aerobically by respiration and in the absence of O2 by anaerobic respiration with nitrate, nitrite, fumarate,

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