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Formic Acid Up-Regulates Vascular Tension Through Nitric oxide-cGMP Signaling Pathway

Formic Acid Up-Regulates Vascular Tension Through Nitric oxide-cGMP Signaling Pathway

Quanxi Zhang, Yuxin Niu, Wenru Lyu, Mengbin Yu

Chem Biol Interact. 2019 Aug 25;309:108710.

PMID: 31199930

Abstract:

Formic acid is a common organic acid used in many industrial processes. There is a paucity of research on the direct toxicity of formic acid and how it might affect the cardiovascular system. This study aimed to understand the effect of formic acid on vascular tension in an animal model and the underlying mechanism. Results found that the vasodilation induced by formic acid was related to the endothelium. When the dosage of formic acid was 1 mM or 5 mM, the vasodilation of endothelium-intact rings was partially suppressed by l-NAME, NS-2028 and nifedipine, and vasoconstriction caused by CaCl2 was inhibited, and the mRNA levels of eNOS, the activity of NOS (tNOS, iNOS and cNOS) and the level of NO and cGMP were significantly increased. Results also found that eNOS protein expression was significantly enhanced by 5 mM of formic acid. These results suggest formic acid can relax the aortic vessels of rats in a dose-dependent pattern. Further, the mechanism of the formic acid-induced vasodilatation likely involved the NO/cGMP pathway. Finally, the current study has revealed that vasodilation induced by high concentrations of formaldehyde may be the effect of the metabolite formic acid. This study will help further inform the etiologies of formic acid-related angiocardiopathies.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP204326432	NS 2028		204326-43-2	Price

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