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Ivermectin-induced programmed cell death and disruption of mitochondrial membrane potential in bovine mammary gland epithelial cells.

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Ivermectin (IVM) is a commercially well-known antiparasitic agent derived from the natural fermentation product avermectin. Originally used as a veterinary drug, IVM has been studied for its pharmacokinetic advantages, such… Click to show full abstract

Ivermectin (IVM) is a commercially well-known antiparasitic agent derived from the natural fermentation product avermectin. Originally used as a veterinary drug, IVM has been studied for its pharmacokinetic advantages, such as anticancer, antimigration, and antiproliferative effects, using several cell types. In the present study, we verified that IVM suppressed bovine mammary gland epithelial cell proliferation and induced the arrest of the cell cycle from the sub-G1 to the G2/M phase in these cells. Due to IVM treatment, the homeostasis of calcium ions, which play a crucial role in intracellular metabolism, deteriorated, leading to the loss of the mitochondrial membrane potential (MMP). To underpin these results, further studies using inhibitors of Ca2+ signaling were performed; combination treatment with IVM and these factors, including 2-APB, BAPTA-AM, or ruthenium red, inhibited the IVM-induced MMP disruption. Furthermore, following IVM treatment, the relationships among various cell signaling mediators were altered, and the balance between diverse cellular processes associated with cell survival or death was disturbed. In conclusion, we assessed the anti-survival effects of IVM on mammary gland epithelial cells; IVM may impede normal lactation in dairy cows.

Keywords: mammary gland; gland epithelial; ivm; cell; bovine mammary

Journal Title: Pesticide biochemistry and physiology
Year Published: 2020

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