diphenylamine/nekróza

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Decreased incidence of diphenylamine-induced renal papillary necrosis in Syrian hamsters given dimethylsulphoxide.

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The renal papillotoxicity of diphenylamine dissolved in dimethylsulphoxide (DMSO) was investigated in male Syrian hamsters, male Sprague-Dawley rats and female Mongolian gerbils. When diphenylamine in DMSO was administered orally to male Syrian hamsters (400, 600 or 800 mg/kg body weight/day for up

Early ultrastructural lesions of diphenylamine-induced renal papillary necrosis in Syrian hamsters.

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The ultrastructural lesions of diphenylamine-induced renal papillary necrosis in Syrian hamsters were characterized by transmission electron microscopy. Twenty-four male Syrian hamsters were orally administered 600 mg diphenylamine/kg body weight as a single dose. At 30 minutes and at 1, 2, 4, 8, 16

Diphenylamine-induced renal papillary necrosis and necrosis of the pars recta in laboratory rodents.

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The nephrotoxicity of diphenylamine, the parent compound of the mefenamate family of nonsteroidal anti-inflammatory drugs, was evaluated in male Syrian hamsters, male Sprague-Dawley rats, and male Mongolian gerbils. Total renal papillary necrosis was observed in four of ten, seven of ten, and six of

Structure-function relationship and role of tumor necrosis factor-alpha-converting enzyme in the down-regulation of L-selectin by non-steroidal anti-inflammatory drugs.

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It has been recently described that some non-steroidal anti-inflammatory drugs (NSAIDs) are able to induce the shedding of L-selectin in neutrophils, an adhesion molecule that plays an essential role in the inflammatory response. We have found that, according to this capability, NSAIDs could be

[Twenty-eight day repeated dose toxicity testing of diphenylamine in F344 rats].

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A twenty-eight day repeated dose toxicity test of diphenylamine (DPA) was carried out in male and female F344 rats at dose levels of 1000, 333, 111 or 0 mg/kg/day. Thirty-six animals of both sexes were divided into 6 groups of equal number, 4 groups being used for the 28 days dosing study and the

Investigation of regional glutathione levels in a model of chemically-induced renal papillary necrosis.

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The effect of diphenylamine on renal cortical, outer medullary and inner medullary glutathione (GSH) concentrations and the effect of GSH depletion on the nephrotoxicity of diphenylamine were investigated in male Syrian hamsters. A dose-dependent decrease in renal cortical GSH was observed within 1

Delayed response to cold stress is characterized by successive metabolic shifts culminating in apple fruit peel necrosis.

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Superficial scald is a physiological disorder of apple fruit characterized by sunken, necrotic lesions appearing after prolonged cold storage, although initial injury occurs much earlier in the storage period. To determine the degree to which the transition to cell death is an active process and

[Effects of recombinant human tumor-necrosis factor related to apoptosis inducing ligand protein on apoptosis of human lung adenocarcinoma cell line resistant to cisplatin].

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BACKGROUND Tumor-necrosis factor related to apoptosis inducing ligand protein(TRAIL), like tumor-necrosis factor (TNF) and Fas, is a member of TNF cytokine supper family. Many researches have showed that TNF-α can reverse the resistance to some chemotherapeutic agents in cancer cell lines, and some

Extracellular ATP causes apoptosis and necrosis of cultured mesangial cells via P2Z/P2X7 receptors.

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Mesangial cells undergo cell death both by apoptosis and necrosis during glomerular disease. Since nucleotides are released from injured and destroyed cells in the glomerulus, we examined whether extracellular ATP and its receptors may regulate cell death of cultured mesangial cells. Addition of

Cell wall, cell membrane, and volatile metabolism are altered by antioxidant treatment, temperature shifts, and peel necrosis during apple fruit storage.

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The transition from cold storage to ambient temperature alters apple quality through accelerated softening, flavor and color changes, and development of physiological peel disorders, such as superficial scald, in susceptible cultivars. To reveal global metabolism associated with this transition, the

Organic two-photon nanoparticles modulate reactive oxygen species, intracellular calcium concentration, and mitochondrial membrane potential during apoptosis of human gastric carcinoma SGC-7901 cells.

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OBJECTIVE To investigate the biocompatibility of human gastric carcinoma cells (SGC-7901) with organic two-photon nanoparticles (NPs). RESULTS Different concentrations of NPs were incubated with SGC-7901 cells for different times. The levels of cell apoptosis, reactive oxygen species (ROS),

[Apoptosis of phagocytes as one of the probable mechanisms of the pathogenetic action of Yersinia pestis "mouse" toxin].

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Apoptosis was evaluated by characteristic morphological changes of cells in preparations stained with histological dyes and in live preparations, as well as by DNA degradation, colorimetrically detected with the use of the diphenylamine reagent. "Mouse toxin" (MT) was found to have a pronounced

Rat parotid gland cell differentiation in three-dimensional culture.

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The use of polarized salivary gland cell monolayers has contributed to our understanding of salivary gland physiology. However, these cell models are not representative of glandular epithelium in vivo, and, therefore, are not ideal for investigating salivary epithelial functions. The current study

Effect of Non-Surgical Periodontal Therapy on the Serum Sialic Acid Levels in Diabetic Patients with Periodontitis.

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Sialic acid (SA), a family of acetylated derivatives of neuraminic acid, an acute phase reactant by itself. It usually occurs as a terminal component at the non-reducing end of carbohydrate chains of glycoproteins and glycolipids. SA participates in multiple physiological functions, such as

Anti-apoptotic effect of L-arginine in cultured rat mesangial cells.

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Nitric oxide has been shown to be an important factor in the regulation of apoptosis in mesangial cells. The following studies were conducted to determine whether L-arginine, the metabolic precursor of nitric oxide synthesis, directly modulates programmed cell death in response to a variety of

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