phenylhydrazine/necrose

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Leaf and root bark extracts of Ziziphus abyssinica Hochst ex. A. Rich (Rhamnaceae) ameliorate hepatic, renal and splenic injuries induced by phenylhydrazine in rats

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Objectives Ziziphus abyssinica (ZA) is employed in managing several ailments in Traditional African Medicine. Scientific evaluations are necessary to ascertain the medicinal potential of ZA as a source of new drug molecules. This study investigated the possible therapeutic benefit of ZA leaf (ZAL)

Cyclooxygenase-2 is essential for normal recovery from 5-fluorouracil-induced myelotoxicity in mice.

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Cyclooxygenase (COX) plays a key regulatory role in prostaglandin synthesis. COX-2 is inducible and is the major isoform of inflammatory cells. COX-2-deficient mice were shown to have normal basal hematopoiesis and hematology. We hypothesized that COX-2 induction plays a role in the recovery phase

The neuroprotective and anti-apoptotic effects of melatonin on hemolytic hyperbilirubinemia-induced oxidative brain damage.

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Melatonin exerts protection in several inflammatory and neurodegenerative disorders. To investigate the neuroprotective effects of melatonin in an experimental hemolysis-induced hyperbilirubinemia, newborn Sprague-Dawley rats (25-40 g, n = 72) were injected with phenylhydrazine hydrochloride (PHZ;

The mechanism of the inhibitory effect of polyamines on the induction of nitric oxide synthase: role of aldehyde metabolites.

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1. We have recently found that in the presence, but not in the absence, of foetal calf serum, spermine inhibits the production of nitric oxide (NO) in cultured J774.2 macrophages stimulated with bacterial endotoxin (lipopolysaccharide; LPS) or with gamma-interferon (IFN), showing that polyamines may

[Prevention of myocardial damage during hemolytic anemia by antioxidants].

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Structural and functional disorders of the heart muscle were studied in rats with phenylhydrazine-induced chronic hemolytic anemia, as was the possibility of their prevention with anti-oxidant Ionol, a lipid peroxidation inhibitor. Hemolytic anemia was shown to produce myocardial contractural

Disturbances of the heart structure and function in chronic hemolytic anemia, their compensation with increased coronary flow, and their prevention with ionol, an inhibitor of lipid peroxidation.

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The structure and function of heart muscle were studied in rats with chronic hemolytic anemia induced by phenylhydrazine. Contractural lesions, myocytolysis, fatty dystrophy, and small-focal necrosis were found in the myocardium along with hypertrophy. The disturbances were accompanied by a

[Myocardium damage in experimental anemia and its prevention with the antioxidant ionol].

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Rats with hemolytic (phenylhydrazine) anemia were shown to develop simultaneously with hypertrophy of the myocardium marked damages of cardiomyocytes of the type of I-III degree contractures, myocytolysis, vacuolation, fatty infiltration, small focal necrosis as well as a peculiar form of damages

The influence of single or repeated phlebotomy on the physiological condition of normal and diseased rats.

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The present experiment was performed to see the influence of phlebotomy on hematology, serum chemistry, and pathology data in rats. When normal rats received a single phlebotomy of 2 or 3 ml blood, erythrocyte count and hematocrit were slightly reduced along with a persistent depression of the blood

Augmented TNF-alpha and IL-10 production by primed human monocytes following interaction with oxidatively modified autologous erythrocytes.

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The presence of dysfunctional/damaged red blood cells (RBCs) has been associated with adverse clinical effects during the inflammatory response. The aim of this study was to elucidate whether oxidatively modified, autologous RBCs modulate monocyte cytokine responses in humans. Monocyte tumor

Circulating FH Protects Kidneys From Tubular Injury During Systemic Hemolysis

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Intravascular hemolysis of any cause can induce acute kidney injury (AKI). Hemolysis-derived product heme activates the innate immune complement system and contributes to renal damage. Therefore, we explored the role of the master complement regulator Factor H (FH) in the kidney's resistance to

Severe iron deficiency blunts the response of the iron regulatory gene Hamp and pro-inflammatory cytokines to lipopolysaccharide.

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BACKGROUND Expression of the key iron regulatory hormone hepcidin is increased by some stimuli (iron loading, inflammation) but decreased by others (increased erythropoiesis, iron deficiency). We investigated the response of hepcidin to increased erythropoiesis and iron deficiency in the presence of

Inflammation-Induced Expression and Secretion of MicroRNA 122 Leads to Reduced Blood Levels of Kidney-Derived Erythropoietin and Anemia.

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Anemia is associated commonly with acute and chronic inflammation, but the mechanisms of their interaction are not clear. We investigated whether microRNA 122 (MIR122), which is generated in the liver and is secreted into the blood, is involved in the development of anemia associated with

Neutrophils develop rapid proinflammatory response after engulfing Hb-activated platelets under intravascular hemolysis.

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Neutrophils maintain immune homeostasis by engulfing apoptotic cells and debris. We describe the rapid activation of neutrophils after engulfing hemoglobin (Hb)-activated platelets, which are abundant in the circulation of hemolytic patients. Neutrophils from healthy individuals after engulfing

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