Dichlorvos (2,2-dichlorovinyl dimethyl phosphate; DDVP) is an organophosphate pesticide used commonly in the United States. Adult exposure to DDVP has been linked with hyperglycemia in human, rats, and fish, and to glucose intolerance in rats.
Flies exposed to DDVP throught development show gluose and trehalose levels increased to diabetic levels in hemolymph and tissue samples, along with increased triglyceride and free fatty acid levels. DDVP exposure causes insulin deficiency, as seen by dysregulation of genes including InR, foxo, and insulin-like peptides (gene group: FBgg0000048) in a manner consistent with models of insulin-dependent type 1 diabetes (FBhh0000479). Levels of activated caspsases were also increased in DDVP exposed flies, suggesting that DDVP induces apoptotic cell death as well.
Exposure to atrazine, has been found to cause a diabetes mellitus type 2-like phenotype in flies, see FBhh0001138.
[updated November 2019 by FlyBase; FBrf0222196]
In Drosophila, ablation of insulin-producing cells (IPCs) or deficiency of ILPs 1-5 leads to the recapitulation of hallmarks of type 1 diabetes, including elevated circulating glucose levels, reduced metabolic activity and starvation response resulting in decreased levels of triglycerides and premature activation of autophagy. (Gupta et al. 2019 and references therein, FBrf0243289.)