Inhibition of Adenylate Cyclase: The muscarinic receptor, through interaction with an inhibitory GTP-binding protein, acts to inhibit adenylyl cyclase. Reduced cAMP production leads to reduced activation of cAMP-dependent protein kinase, reduced heart rate, and contraction strength.
Scleroderma, a rare autoimmune disease characterized by abnormal connective tissue growth, can wreak havoc on everything from the skin and heart to lungs, teeth, speech, and movement. The overproduction of collagen causes the skin and organs to harden, leading them to atrophy and possibly fail.
Scleroderma causes the body to produce too much collagen. Collagen is a protein that makes up connective tissues, such as the skin. Too much collagen can make the skin stretch, harden and thicken, and can also cause damage to internal organs, such as the heart, lungs and kidneys.There are 2 types of scleroderma: localized and systemic.Localized scleroderma affects the skin only.oo much collagen can make the skin stretch, harden and thicken, and can also cause damage to internal organs, such as the heart, lungs and kidneys. There are 2 types of scleroderma: localized and systemic.