Like the M 1 and M 3 muscarinic receptor, M 5 receptors are coupled with G proteins of class Gq that upregulate phospholipase C and, therefore, inositol trisphosphate and intracellular calcium as a signaling pathway.
Radioactive iodine is a very effective type of treatment for cancer of the thyroid gland. Thyroid cells absorb iodine. The radioactive iodine from the drink or capsule is absorbed into your body and picked up by the thyroid cancer cells wherever they are. So it can kill the cancer cells even if they have spread.
A variety of treatments are used depending on the type of thyroid cancer you have and how advanced it is. The first step is usually surgery, with all or part of your thyroid removed, along with any nearby glands that show signs of cancer. Radiotherapy â and in particular a treatment called radioiodine â is also used to kill cancerous cells. If you have radioiodine treatment, youâll need to go into hospital for a few days.