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Melatonin MT < sub > 2 < /sub > receptor is expressed and potentiates contraction in human airway smooth muscle
Am J Physiol Lung Cell Mol Physiol. 2021 Oct 6. doi: 10.1152/ajplung.00273.2021. Online ahead of print.ABSTRACTNocturnal asthma is characterized by heightened bronchial reactivity at night, and plasma melatonin concentrations are higher in patients with nocturnal asthma symptoms. Numerous physiological effects of melatonin are mediated via its specific G protein-coupled receptors (GPCRs) named the MT1 receptor which couples to both Gq and Gi proteins, and the MT2 receptor which couples to Gi. We investigated whether melatonin receptors are expressed on airway smooth muscle, whether they regulate intracellular cyclic AMP (c...
Source: American Journal of Physiology. Lung Cellular and Molecular Physiology - October 6, 2021 Category: Cytology Authors: Haruka Sasaki Yi Zhang Charles W Emala Kentaro Mizuta Source Type: research