Abstract:
:1. A modified mouse liver slice culture technique was established and the viability of the system was assessed on the basis of leakage of cytosolic enzymes viz. lactate dehydrogenase (LDH), alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartic aminotransferase (AST) and slice histology. 2. This system was employed for toxicity screening of five algal species of Indian origin on the basis of the EC50 for LDH leakage (dose of cyanobacteria resulting in leakage of 50% of enzyme) of a known toxic cyanobacterial strain Microcystis aeruginosa (PCC 7820). On the basis of both in vitro and in vivo toxicity none of the five species screened exhibited toxicity. 3. The toxicity of PCC 7820 was compared with a purified cyanobacterial hepatotoxin, Microcystin-LR. Various biochemical indices and histological changes confirm the hepatotoxic nature of the toxins. 4. The toxins did not induce glutathione-mediated lipid peroxidation but they did cause significant mitochondrial damage based on an MTT assay. 5. The study illustrates the utility of this in vitro system in identifying naturally occurring toxic cyanobacteria, particularly hepatotoxic species.
journal_name
Hum Exp Toxicoljournal_title
Human & experimental toxicologyauthors
Bhattacharya R,Rao PV,Bhaskar AS,Pant SC,Dube SNdoi
10.1177/096032719601500202subject
Has Abstractpub_date
1996-02-01 00:00:00pages
105-10issue
2eissn
0960-3271issn
1477-0903journal_volume
15pub_type
杂志文章abstract::Deregulated cancer cell metabolism plays an important role in cancer progression. Cancer cell metabolism has been in the centre of attention in therapeutical cancer cell targeting. Repurposed chemical agents, such as metformin and aspirin, have been studied extensively as preventive and therapeutic agents. Metformin i...
journal_title:Human & experimental toxicology
pub_type: 杂志文章
doi:10.1177/0960327117747025
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abstract::The principal impediment to gene therapy is the development of efficient, nontoxic gene carriers that can handle and deliver foreign genetic materials into various cell types, including healthy and cancerous cells. Poly-l-lysine (PLL) polymers are one of the most favorable gene carriers among nonviral vectors, and PLL...
journal_title:Human & experimental toxicology
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doi:10.1177/0960327119846924
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journal_title:Human & experimental toxicology
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journal_title:Human & experimental toxicology
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abstract::Stem cell transplantation has indicated great promise for cell therapy in a wide range of diseases, but poor and insufficient viability of cells within damaged tissues has limited its potential therapeutic effects. 17 β-Estradiol (E2) is a steroid hormone that plays an important role in expression of many genes and re...
journal_title:Human & experimental toxicology
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doi:10.1177/0960327115586208
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abstract::Mercury, a heavy metal, is widespread and persistent in the environment and has been elucidated as a possible risk factor in cardiovascular diseases. Mercury has been reported to selectively impair the nitric oxide (NO) pathway in the vascular endothelium as a consequence of oxidative stress. Conversely, mercury per s...
journal_title:Human & experimental toxicology
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abstract::Enterococcus faecalis is a facultative anaerobic gram-positive commensal bacterium common in the gastrointestinal tract of animals and humans. This study aimed to investigate the protective effects of heat-killed E. faecalis EF-2001 (EF-2001) on acute gastric ulcer using a murine model of ethanol (EtOH)-induced acute ...
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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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journal_title:Human & experimental toxicology
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abstract:AIM:To assess the systemic inflammatory response (SIR) and the multi-organ damage after large-volume liver radiofrequency ablation (RFA) with or without concurrent Pringle maneuver. METHODS:Wistar rats were subjected to 30% liver RFA (group RFA), liver RFA under 30-min Pringle maneuver (group RFA + P), Pringle only (g...
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