ochratoxin a/سرطان

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Ochratoxin A in human blood in relation to Balkan endemic nephropathy and urinary tract tumours in Bulgaria.

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Ochratoxin A is suspected of being one of the etiological agents responsible for Balkan endemic nephropathy and the associated urinary tract tumours. Contamination of cereals by this mycotoxin has been found to be more frequent in areas of endemic nephropathy than in areas where the disease is

Ochratoxin A-related DNA adducts in urinary tract tumours of Bulgarian subjects.

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Ochratoxin A (OTA), a natural contaminant of mouldy food and feed, is suspected of being one of the etiological agents responsible for Balkan endemic nephropathy (BEN) and the associated urinary tract tumours. We have previously shown that ochratoxin A is genotoxic as expressed by DNA single-strand

Analysis of ochratoxin A blood levels in bladder cancer cases and healthy persons from Pakistan.

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The mycotoxin ochratoxin A (OTA), a well-known human nephrotoxic and carcinogenic agent, is a public health concern in many countries. Exposure is assessed by means of mycotoxin analysis in food commodities and by human biomonitoring of OTA in blood samples. Data available from several European

Hypothesis: does ochratoxin A cause testicular cancer?

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Little is known about the etiology of testicular cancer, which is the most common cancer among young men. Epidemiologic data point to a carcinogenic exposure in early life or in utero, but the nature of the exposure is unknown. We hypothesize that the mycotoxin, ochratoxin A, is a cause of

The role of alpha2u-globulin in ochratoxin A induced renal toxicity and tumors in F344 rats.

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The mycotoxin ochratoxin A (OTA) was shown to be a potent kidney carcinogen in rats demonstrating a marked sex difference in the response. Compared to female rats, male rats had a 10-fold higher incidence of kidney carcinomas. The objective of this study was to investigate whether this sex

Sex- and strain-specific induction of renal tumors by ochratoxin A in rats correlates with DNA adduction.

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Ochratoxin A (OTA), a nephrotoxic and carcinogenic mycotoxin, has been implicated as an etiologic agent in the Balkan endemic nephropathy (BEN), a chronic disease affecting populations in the Balkans. Compared with unaffected individuals, patients suffering from BEN and/or urinary tract tumors were

Ochratoxin A-induced tumor formation: is there a role of reactive ochratoxin A metabolites?

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Ochratoxin A is a nephrotoxic and tumorigenic mycotoxin which contaminates a variety of food items, resulting in chronic human exposure. Biotransformation reactions have been implicated in the tumorigenicity of ochratoxin A. The biotransformation of ochratoxin A by cytochromes P450 and other

New molecular and field evidences for the implication of mycotoxins but not aristolochic acid in human nephropathy and urinary tract tumor.

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To find out whether ochratoxin A (OTA), citrinin (CIT), aristolochic acids (AA) are etiologic agents of Balkan endemic nephropathy (BEN) or Chinese herbal nephrotoxicity, and associated urinary tract tumor (UTT), we have compared (i) in human kidney cell culture, the DNA adduct formation and

How aspartame prevents the toxicity of ochratoxin A.

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The ubiquitous mycotoxin ochratoxin A (OTA) is found as a frequent contaminant of a large variety of food and feed and beverage such as beer, coffee and win. It is produced as a secondary metabolite of moulds from Aspergillus and Penicillium genera. Ochratoxin A has been shown experimentally to

[Monitoring the important mycotoxin biomarkers (ochratoxin A, aflatoxin M1) in the Czech population].

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BACKGROUND In among mycotoxins, secondary metabolites of toxinogenic moulds, ochratoxin A and aflatoxins occupy a prominent place. These mycotoxins have been--as etiologic agents-- associated with a wide numbers of acute and chronic human diseases including mycotoxicoses like Balkan endemic

Evidence of a new dechlorinated ochratoxin A derivative formed in opossum kidney cell cultures after pretreatment by modulators of glutathione pathways: correlation with DNA-adduct formation.

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Ochratoxin A (OTA), a nephrotoxic mycotoxin probably implicated in human Balkan endemic nephropathy and associated urothelial tumors, induces renal carcinomas in rodents and nephrotoxicity in pigs. OTA induces DNA-adduct formation, but the structure of the adducts and their role in nephrotoxicity

Plasma ochratoxin A levels, food consumption, and risk biomarkers of a representative sample of men and women from the Molise region in Italy.

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BACKGROUND Ochratoxin A (OTA) is a mycotoxin present in food that can be found in human blood, due to its long half-life. Plasma OTA detection represents a good parameter for evaluating the exposure at the population level. OBJECTIVE The relation between plasma OTA levels, dietary habits, and

Lack of an Apparent Association between Mycotoxin Concentrations in Red Chili Peppers and Incidence of Gallbladder Cancer in India : an Ecological Study.

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Our recent studies conducted in South America have shown that mycotoxin contamination of red chili peppers (RCPs) may be associated with an increased risk of gallbladder cancer (GBC). Whether this relationship exists in India, a country with a high incidence of GBC and high consumption of RCPs, is

Effect of quercetin on the toxicokinetics of ochratoxin A in rats.

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Previous studies indicate that the intestinal absorption of the nephrotoxic mycotoxin ochratoxin A (OTA) occurs mainly through passive diffusion of the undissociated form. However, several in vitro studies have shown that OTA is partly re-secreted into the intestinal lumen by the multi-drug

Ochratoxin A: lack of formation of covalent DNA adducts.

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The mycotoxin ochratoxin A (OTA) is a potent nephrotoxin and renal carcinogen in rodents. However, the mechanism of OTA-induced tumor formation is unknown and conflicting results have been obtained regarding the potential of OTA to bind to DNA. OTA is poorly metabolized, and no reactive

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