Abstract:
:The effects of the environmental toxicant, triethyltin, on Ca2+ mobilization in Madin-Darby canine kidney (MDCK) cells have been examined. Triethyltin induced an increase in cytosolic free Ca2+ levels ([Ca2+]i) at concentrations larger than 2 microM in a concentration-dependent manner. Within 5 min, the [Ca2+]i signal was composed of a gradual rise and a sustained phase. The [Ca2+]i signal was partly reduced by removing extracellular Ca2+. In Ca(2+)-free medium, pretreatment with thapsigargin (1 microM), an endoplasmic reticulum Ca2+ pump inhibitor, reduced 50 microM triethyltin-induced [Ca2+]i increase by 80%. Conversely, pretreatment with triethyltin abolished thapsigargin-induced Ca2+ release. Pretreatment with U73122 (2 microM) to inhibit phospholipase C-coupled inositol 1,4,5-trisphosphate formations failed to alter 50 microM triethyltin-induced Ca2+ release. Incubation with triethyltin at a concentration (1 microM) that did not increase basal [Ca2+]i for 3 min did not alter ATP (10 microM)- and bradykinin (1 microM)-induced [Ca2+]i increases. Collectively, this study shows that triethyltin altered Ca2+ movement in renal tubular cells by releasing Ca2+ from multiple stores in an inositol 1,4,5-trisphosphate-independent manner, and by inducing Ca2+ influx.
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Jiann BP,Chou KJ,Chang HT,Chen WC,Huang JK,Jan CRdoi
10.1191/0960327102ht276oasubject
Has Abstractpub_date
2002-08-01 00:00:00pages
457-62issue
8eissn
0960-3271issn
1477-0903journal_volume
21pub_type
杂志文章abstract::A four-fold increase in the iron content of normal subjects was detected in plasma after 5 hours of iron administration. Iron supplementation had a surprisingly erratic effect on four patients with hepatomegaly secondary to heart insufficiency, since the increase in the iron content in the plasma after iron-dextran ad...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
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abstract:AIM:Diazinon (DZN) is one of the most important organophosphorus compounds used to control pests in agriculture in many countries. Several studies have shown that exposure to DZN may alter protein expression in the liver. In order to further investigate the mechanism of DZN toxicity, differentially expressed ATP-intera...
journal_title:Human & experimental toxicology
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abstract::The modulating effect of peroxisome proliferator-activated receptor α ligand on haemodynamic effects of phenylepherine (PE), angiotensin II (AII), endothelin 1 (ET1), acetylcholine (Ach), sodium nitroprusside (SNP) and isoproterenol (ISO) were evaluated in glycerol-induced acute kidney injury in rats. The effect of PE...
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abstract::This descriptive and retrospective study was conducted at the poisoning ward of Imam teaching hospital, Sari, Iran, with the aim of evaluating the pattern of poisoning. Hence, the medical profiles of 2057 patients, who were admitted, were carefully reviewed during the period from April 2006 to March 2008 for 2 years. ...
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abstract::Food-borne botulism is a rare disease that results from ingestion of the toxins produced by Clostridium botulinum. The most common cause of the disease is the consumption of home-canned foods prepared under inappropriate conditions, especially in rural environments. In this report, a food-borne botulism outbreak poten...
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journal_title:Human & experimental toxicology
pub_type: 杂志文章,评审
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journal_title:Human & experimental toxicology
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pub_type: 临床试验,杂志文章
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journal_title:Human & experimental toxicology
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journal_title:Human & experimental toxicology
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journal_title:Human & experimental toxicology
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journal_title:Human & experimental toxicology
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journal_title:Human & experimental toxicology
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