pepstatin/hypoxia

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Effects of pepstatin on reducing hypoxia-induced injury in the isolated guniea pig heart.

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Intracellular cathepsin D is thought to play a role in myocardial injury produced by ischemia and hypoxia. Pepstatin, a known inhibitor of cathepsin D, was infused into isolated guniea pig hearts (Langendorff preparation) in order to observe if such an administration of pepstatin would protect

Hypoxia inhibits expression of prolactin and secretion of cathepsin-D by the GH4C1 pituitary adenoma cell line.

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Diminished oxygen concentration within growing tumors may stimulate neovascularization by inducing both up-regulation of angiogenic factors and down-regulation of antiangiogenic agents. A potentially important molecule in the growth of pituitary adenomas is prolactin (PRL), which can be cleaved by

Hypoxia inhibits TRAIL-induced tumor cell apoptosis: involvement of lysosomal cathepsins.

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Tumor hypoxia interferes with the efficacy of chemotherapy, radiotherapy, and tumor necrosis factor-alpha. TRAIL (tumor necrosis factor-related apoptosis inducing ligand) is a potent apoptosis inducer that limits tumor growth without damaging normal cells and tissues in vivo. We present evidence for

Proteases inhibition assessment on PC12 and NGF treated cells after oxygen and glucose deprivation reveals a distinct role for aspartyl proteases.

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Hypoxia is a severe stressful condition and induces cell death leading to neuronal loss both to the developing and adult nervous system. Central theme to cellular death is the activation of different classes of proteases such as caspases calpains and cathepsins. In the present study we investigated

Possible mechanism for the decrease of mitochondrial aspartate aminotransferase activity in ischemic and hypoxic rat retinas.

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Glutamate is believed to be an excitatory amino acid neurotransmitter in the retina. Enzymes for glutamate metabolism, such as glutamate dehydrogenase, ornithine aminotransferase, glutaminase, and aspartate aminotransferase (AAT), exist mainly in the mitochondria. The abnormal increase of

A novel cytotoxicity screening assay using a multiwell fluorescence scanner.

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A new assay using a multiwell fluorescence scanner was developed for screening cytotoxicity to cells cultured in 96-well microtiter plates. The assay is based on binding of propidium iodide to nuclei of cells whose plasma membranes have become permeable due to cell death. Fluorescence of propidium

Aspirin alleviates cardiac fibrosis in mice by inhibiting autophagy.

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Aspirin (ASA) is a cardioprotective drug with anti-cardiac fibrosis action in vivo. This study was aimed to clarify the anti-cardiac fibrosis action of ASA and the underlying mechanisms. Two heart injury models (injection of isoproterenol and ligation of the left anterior descending branch) were

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