Gastric muscle

The term "gastric muscle" refers broadly to the smooth muscle tissue found in the wall of the stomach. This tissue is responsible for generating contractions that mix and propel stomach contents during digestion. Gastric smooth muscle function is regulated by multiple cell types including smooth muscle cells, interstitial cells of Cajal (pacemaker cells), and PDGFRα+ fibroblast-like cells, each contributing differently to electrical activity and response to neurotransmitters. The primary molecular targets within gastric muscle are not unique molecules but rather families of receptors—most notably muscarinic acetylcholine receptors (M2 and M3) which mediate cholinergic stimulation leading to contraction, as well as purinergic P2Y1 receptors on associated interstitial cells that modulate inhibitory responses[1][2]. As a whole tissue type rather than a specific molecule or receptor, "gastric muscle" itself is not considered a direct therapeutic target; instead, drugs act on its constituent cellular components. In summary, “gastric muscle” describes an anatomical structure composed mainly of smooth muscle cells regulated by several types of membrane-bound receptors but does not refer to a single defined molecular target suitable for structured drug-target databases.[1][2]

Other names

gastric smooth musclestomach smooth muscle

Modulation of contraction via activation or inhibition of muscarinic acetylcholine receptors, primarily M2 and M3 subtypes Modulation by purinergic signaling through P2Y1 receptors in associated interstitial cells