ceramide/epuizare

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Diaphragm dysfunction in heart failure is accompanied by increases in neutral sphingomyelinase activity and ceramide content.

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OBJECTIVE Chronic heart failure (CHF) causes inspiratory (diaphragm) muscle weakness and fatigue that contributes to dyspnoea and limited physical capacity in patients. However, the mechanisms that lead to diaphragm dysfunction in CHF remain poorly understood. Cytokines and angiotensin II are

Sphingomyelinase stimulates oxidant signaling to weaken skeletal muscle and promote fatigue.

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Sphingomyelinase (SMase) hydrolyzes membrane sphingomyelin into ceramide, which increases oxidants in nonmuscle cells. Serum SMase activity is elevated in sepsis and heart failure, conditions where muscle oxidants are increased, maximal muscle force is diminished, and fatigue is accelerated. We

Insights into myalgic encephalomyelitis/chronic fatigue syndrome phenotypes through comprehensive metabolomics.

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The pathogenesis of ME/CFS, a disease characterized by fatigue, cognitive dysfunction, sleep disturbances, orthostatic intolerance, fever, irritable bowel syndrome (IBS), and lymphadenopathy, is poorly understood. We report biomarker discovery and topological analysis of plasma metabolomic, fecal

Metabolic features of Gulf War illness.

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More than 230,000 veterans-about 1/3 of US personnel deployed in the 1990-1991 Persian Gulf War-developed chronic, multi-symptom health problems now called "Gulf War illness" (GWI), for which mechanisms and objective diagnostic signatures continue to be

Day-night differences in effects of cosmetic treatments on facial skin. Effects on facial skin appearance.

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Two groups of 24 healthy caucasian women, similar with regard to age classes (from 19 to 55) as well as fair and dark complexion of skin and hair, volunteered to use during a 14-day span a conventional facial cream (active placebo: AP) and thereafter, during a 21-day span Noctosome (Noctos). The

Effect of acute exercise on the content of free sphinganine and sphingosine in different skeletal muscle types of the rat.

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It has previously been shown that prolonged exercise of moderate intensity reduces the content of ceramide in each type of skeletal muscle. This was accompanied by a reduction in the activity of neutral, Mg++-dependent sphingomyelinase (the major enzyme responsible for ceramide formation from

The role of sphingosine-1-phosphate in skeletal muscle: Physiology, mechanisms, and clinical perspectives.

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Sphingolipids were discovered more than a century ago and were simply considered as a class of cell membrane lipids for a long time. However, after the discovery of several intracellular functions and their role in the control of many physiological and pathophysiological conditions, these molecules

Saussurea involucrata: A review of the botany, phytochemistry and ethnopharmacology of a rare traditional herbal medicine.

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BACKGROUND Saussurea involucrata Matsum. & Koidz. is an endangered species of the Asteraceae family, growing in the high mountains of central Asia. It has been, and is, widely used in traditional Uyghur, Mongolian and Kazakhstan medicine as well as in Traditional Chinese Medicine as Tianshan Snow

Sphingolipid metabolism, oxidant signaling, and contractile function of skeletal muscle.

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CONCLUSIONS Sphingolipids are a class of bioactive lipids that regulate diverse cell functions. Ceramide, sphingosine, and sphingosine-1-phosphate accumulate in tissues such as liver, brain, and lung under conditions of cellular stress, including oxidative stress. The activity of some sphingolipid

The role of sphingolipids in the control of skeletal muscle function: a review.

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In this review, potential roles for the endogenous sphingolipid, sphingosine, and its derivatives are described for muscle cells. Sphingosine modulates the function of important calcium channels in muscle, including the ryanodine receptor (RyR) calcium release channel of the sarcoplasmic reticulum

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