mesenteric ischemia/نقص الأكسجة

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Effects of vasodilators on mesenteric ischemia and hypoxia induced by hemorrhage.

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We compared the effectiveness of three pharmacologically and chemically dissimilar vasodilators (histamine, glucagon, and perhexiline) in reversing the hemodynamic and metabolic deficits of intestinal ischemia produced by hemorrhage. With intraarterial infusion into the superior mesenteric artery of

Platelet-mediated adhesion facilitates leukocyte sequestration in hypoxia-reoxygenated microvessels.

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Leukocyte transendothelial migration and sequestration are two distinct outcomes following leukocyte adhesion to endothelium during ischemia-reperfusion injury, in which platelets may play a pivotal role. In the present study, we established an in vitro hypoxia-reoxygenation model to mimic

Noninvasive monitoring of small intestinal oxygen in a rat model of chronic mesenteric ischemia.

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We noninvasively monitored the partial pressure of oxygen (pO2) in rat's small intestine using a model of chronic mesenteric ischemia by electron paramagnetic resonance oximetry over a 7-day period. The particulate probe lithium octa-n-butoxynaphthalocyanine (LiNc-BuO) was embedded into the oxygen

[Chronic mesenteric ischemia].

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Chronic mesenteric ischemia often called intestinal angina too, is the clinical syndrome that originates as a result of chronic obstruction of the splanchnic arteries. Intestinal angina is defined by the clinical triad of postprandial abdominal pain, sitophobia (fear of eating) and chronic weight

Smooth muscle contraction bands in intestinal infarction.

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We studied microscopic sections of 24 cases of intestinal infarction looking for contraction bands (CB) in the muscularis propria of the bowel wall. Controls were 11 surgical and 11 autopsy cases from patients who did not suffer any form of ischaemic disease. The difference of CB frequency was

Hypoxia/reoxygenation of human endothelium activates PMNs to detach endothelial cells via a PAF mechanism.

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Our previous in vivo studies have implicated phospholipase A2 activation and platelet-activating factor (PAF) production as an important mediator of neutrophil (PMN) priming after mesenteric ischemia/reperfusion. Furthermore, our in vitro studies demonstrate that PAF priming of PMN enhances PMN

Can thromboembolism be the result, rather than the inciting cause, of acute vascular events such as stroke, pulmonary embolism, mesenteric ischemia, and venous thrombosis?: a maladaptation of the prehistoric trauma response.

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Thromboembolism is considered the inciting cause of many vascular disorders including acute coronary syndrome (ACS), ischemic stroke, pulmonary embolism (PE), deep vein thrombosis (DVT), and mesenteric ischemia. Adrenergia and inflammation are known to accompany these conditions, particularly among

Hypoxia and extraintestinal dissemination of Candida albicans yeast forms.

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Candida albicans is a pleomorphic fungus with budding yeast and filamentous forms, and is a frequent cause of complicating infections in patients who are postsurgical, in shock, and have trauma. Many cases of systemic candidiasis are thought to orginate from the intestine, but it is unclear if the

Protection by the Eph-Ephrin System Against Mesenteric Ischemia-Reperfusion Injury.

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Mesenteric ischemia-reperfusion (I/R)-induced injury targets primarily endothelial and epithelial cells, leading to a cascade of inflammatory events, eventually culminating in life-threatening syndromes. Hitherto, the role of Eph, the largest family of tyrosine kinase receptors, and of their

Clinical factors and outcomes in patients with acute mesenteric ischemia in the emergency department.

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BACKGROUND The purpose of this study was to determine the initial clinical characteristics of acute mesenteric ischemia and identify variables associated with adverse outcomes in the emergency department (ED). METHODS The charts of 124 consecutive patients with surgically and pathologically

Regulation of hemodynamics and oxygenation in developing intestine: insight into the pathogenesis of necrotizing enterocolitis.

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The pathogenesis of necrotizing enterocolitis remains unknown, but various factors have been postulated including, but not limited to, mesenteric ischemia, enteral alimentation, and infection. Since an understanding of circulatory physiology in developing intestine may provide insight into the role

Development of acute parotitis after non-invasive ventilation.

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A 90-year-old woman underwent laparoscopic exploratory laparotomy for evaluation of suspected mesenteric ischemia. She was promptly extubated postoperatively and transferred to the intensive care unit, where on the first postoperative day she developed hypoxemia necessitating initiation of

Phagocytic and intestinal endothelial and epithelial barrier function during the early stage of small intestinal ischemia and reperfusion injury.

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The effects of intestinal ischemia and reperfusion (I/R) on small intestinal mucosal endothelial and epithelial barrier integrity and phagocytic function were assessed in rats subjected to 20- or 40-min mesenteric ischemia and a 3-h reperfusion. The results showed that human serum albumin (125I-HSA)

C5a inhibitor protects against ischemia/reperfusion injury in rat small intestine.

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Acute mesenteric ischemia (AMI) is caused by considerable intestinal injury, which is associated with intestinal ischemia followed by reperfusion. To elucidate the mechanisms of ischemia/reperfusion injuries, a C5a inhibitory peptide termed AcPepA was used to examine the role of C5a anaphylatoxin,

17 degrees Celsius body temperature--resuscitation successful?

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The resuscitation of patients with accidental profound hypothermia is challenging. A 17-year-old man got lost on the first of January, after a New Year's Eve party in the foothills of the Alps. After a search of four hours, he was found unconscious with fixed pupils, a Glasgow Coma Scale of three

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