Betaine is a byproduct of sugar beet processing. Betaine works by preventing the build-up of an amino acid called homocysteine.This amino acid can harm blood vessels and contribute to heart disease, stroke, or circulation problems.etaine is not a cure for homocysteinuria. Betaine may also be used for purposes not listed in this medication guide. Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
A smooth muscle is excited by external stimuli, which causes contraction. Each step is further detailed below. Inducing stimuli and factors. Smooth muscle may contract spontaneously (via ionic channel dynamics) or as in the gut special pacemakers cells interstitial cells of Cajal produce rhythmic contractions.
In invertebrate smooth muscle, contraction is initiated with the binding of calcium directly to myosin and then rapidly cycling cross-bridges, generating force. Similar to the mechanism of vertebrate smooth muscle, there is a low calcium and low energy utilization catch phase.mooth muscle Î±-actin (alpha actin) is the predominate isoform within smooth muscle. There are also lots of actin (mainly Î²-actin) that does not take part in contraction, but that polymerizes just below the plasma membrane in the presence of a contractile stimulant and may thereby assist in mechanical tension.