What is a histamine receptor?
Four different types of histamine receptors are found in the body. All four are similar in that they are receptors associated with G proteins. Each histamine receptor is found on different cell types and has different ways of signaling the cells on which it is found. Histamine receptors are stimulated by histamine molecules outside the cell. When the histamine receptor is activated, the signal causes the cell to flow. This signal then causes a specific cell response to which type of cell is stimulated. It is well known for the role played in allergic reactions, but is also important for many normal processes in the body. Histamine sensitivity as well as histamine as well as histamine cells.
The four types of histamine receptors that were identified are H 1 , H 2 , H 3 and H 4 receptors. These four receptors are one of the reasons why histamine causes such a wide range of symptoms. Each receptor is stimulated by histamine, andLE causes different reactions in different cells.
H1 Histamine receptor is located throughout the body. In particular, receptors are H 1 placed in smooth or involuntary muscle cells, cells lining blood vessels in the heart and central nervous system. When stimulating, receptors H 1 control the contraction of smooth muscles and dilation of blood vessels. Above stimulation, it causes an acute allergic reaction.
6 These cells are responsible for the excretion of stomach acid when stimulated by histamine. The receptors H 3 are found in the central nervous system and regulate the release of neurotransmitters in the brain. Finally, receptors H 4 usually occur in the cells of the immune system, including t cells, caustic cells and eosinophils. These receptors play a role in how the body's immune responses are regulated. Have been developed by antihistamines or drugs that block the effect of HIstamine that faces the activity of H 1 and H 2 . Antihistamines that block H 1 histamine receptors are commonly used in allergic drugs, as well as in cold medicines and sleeping aids. Drugs that have been developed for blocking H