Multiple giant cell formation – A consequence of type II pyrethroid intoxication

Bhushan, Brijender; Saxena, Paresh

doi:10.2478/intox-2018-0014

Cited by 1 publication

(1 citation statement)

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“…Pyrethroids trigger a state of physiological stress which stimulates the sympathetic nervous system to release catecholamine and glucocorticoid, causing hyperglycemia 32 , 36 . Additionally, pyrethroids enhance a state of sustained neuronal discharge, which stimulates glucose production by gluconeogenesis and glycogenolysis in compensation for the increased energy demand 37 .…”

Section: Discussionmentioning

confidence: 99%

Lambda-cyhalothrin-induced pancreatic toxicity in adult albino rats

Sakr

Rashad

2023

Sci Rep

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Lambda-cyhalothrin (LCT) is one of the most frequently utilized pyrethroids. This study aimed to explore the toxic effects of subacute exposure to LCT on the pancreas and the hepatic glucose metabolism in adult male albino rats. 20 rats were equally grouped into; Control group and LCT group. The latter received LCT (61.2 mg/kg b.wt.), orally on a daily basis for 28 days. At the end of experiment, blood samples were collected for the determination of serum glucose and insulin levels. Pancreases were harvested and levels of malondialdehyde (MDA); catalase (CAT); superoxide dismutase (SOD); reduced glutathione (GSH); tumor necrosis factor-α (TNF-α); interleukin-6 (IL-6); nuclear factor erythroid 2–related factor 2 (Nrf2); heme oxygenase 1 (HO-1); and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) were assessed. Also, liver samples were analyzed for the activity of glucose metabolism enzymes, glycogen content, and pyruvate and lactate concentrations. Histopathological and immunohistochemical examinations of pancreatic tissues were undertaken as well. Results revealed hyperglycemia, hypoinsulinemia, increased MDA, TNF-α, IL-6, and NF-κB levels, in association with reduced CAT, SOD, GSH, Nrf2, and HO-1 levels in LCT group. Liver analyses demonstrated a clear disturbance in the hepatic enzymes of glucose metabolism, diminished glycogen content, decreased pyruvate, and increased lactate concentrations. Besides, pancreatic islets displayed degenerative changes and β-cells loss. Immunohistochemistry revealed diminished area percentage (%) of insulin and Nrf2 and increased TNF-α immunoreaction. In conclusion, subacute exposure to LCT induces pancreatic toxicity, mostly via oxidative and inflammatory mechanisms, and dysregulates hepatic glucose metabolism in albino rats.

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Section: Discussionmentioning

confidence: 99%