Flowers can not only be a matter of aesthetic pleasure, but to help in the treatment of the brain, say Chinese scientists. According to them, such flowers as crocus, lavender, daffodils, snowdrops and crocus have a number of medicinal properties.
For example, snowdrops contain galantamine, which causes dementia, Alzheimer's disease of mild to moderate severity, including those struggling with chronic cerebral circulation, increasing the concentration of acetylcholine in the body. That acetylcholine is responsible for the transmission of messages coming from neurons in Alzheimer's disease Read more [...]
Cholinomimetic agents (cholinomimetics) - substances stimulating cholinergic receptors - biochemical system of the body that responds to acetylcholine. Cholinergic receptors are not homogeneous. Some of them show selective sensitivity to nicotine and nicotine-called sensitive, or n-acetylcholine receptors. N-cholinergic receptors located in the ganglia of the sympathetic and parasympathetic nerves in the adrenal medulla, in carotid glomeruli in the endings of motor nerves in the central nervous system cholinergic Other exhibit selective sensitivity to muscarine - an alkaloid extracted from the Read more [...]
Acetylcholine - one of the most important biologically active substances. It produce the end of nerve fibers and processes. At the contact between a nerve cell and motor nerves to the muscles is acetylcholine acts as a transporter of nervous excitement, a mediator between the cells - the mediator. In the human body, in his brain, nerve nuclei and there are tens of billions of nerve cells. Each of them is connected to the other cells 150-200. And almost all of these neural and neuromuscular contacts transfer of nervous excitement carries acetylcholine.
The role of the mediator is extremely Read more [...]
For the normal function of the myocardium to the balance between the sympathetic neurohormones (epinephrine and norepinephrine - the so-called adrenergic catecholamines) and parasympathetic (acetylcholine) departments. This defines the normal energy metabolism in the myocardium. With mental and physical stress increases flow of adrenaline in the blood (W. Kennon). This is regarded as a manifestation of stimulation and enhanced adaptation to work not only skeletal muscle and myocardium, and other organs and body systems. However, increasing amounts of catecholamines has a stimulating effect Read more [...]
Chemical agents are specially synthesized chemical compounds designed to destroy enemy personnel and reducing their combat capability.
The first nerve activity was synthesized in 1936 in the German chemist Schrader, who worked in the Group "I. G. Farben. " Schrader studied the synthesis of insecticides. One of the findings to the compound has an extremely high toxicity. The first nerve agents has been called "the herd." Toxic substances are designated as herd - GA, Sarin - GOn, Soman - GD.
The reason that the nerve of the strike at very low doses, lies in the fact that Read more [...]
Found that selection acetylcholine occurs at the end of the reflex arc in the nerve endings cholinergic fibers, these include not only the parasympathetic nerve fibers and preganglionic sympathetic nerve fibers, but also many postganglionic sympathetic nerve fibers. The innervation of the posterior pituitary also holinergichna and allocation pitotsina associated with irritation of the nerves that also secrete acetylcholine (AA Belous).
It is believed that the intensity of concentration acetylcholine is due to changes in the proportions of gonadotropic and sex hormones and the emergence of a qualitatively Read more [...]
Anticholinesterase agents - substances that suppress the activity of cholinesterase - an enzyme that breaks down acetylcholine.
By anticholinesterases include physostigmine, galantamine, Neostigmine, oksazil, phosphacol, Armin, pirofos etc.
In the presence of anticholinesterases slowing the destruction of acetylcholine (see), it accumulates and causes a corresponding action: Pupillary constriction, lowering intraocular pressure, salivation, increased bowel movements, slow heart rate, increased uterine contractions, etc.
Anticholinesterase agents most commonly used in glaucoma as a means of narrowing Read more [...]
Acetylcholine - is an ester of choline and acetic acid, is a chemical transmitter of nervous excitement (see Mediators). Formed in the body of acetylcholine binds to proteins and in this form is inactive. Acetylcholine is released from its association with proteins in the transmission of nerve impulses. Nerve fibers, which is released at the ends of acetylcholine are called cholinergic. Acetylcholine is unstable. The released acetylcholine very rapidly destroyed under the influence of the enzyme cholinesterase.
As a preparation may popolzovatsya acetylcholine chloride (Acetylcholinum chloratum, Read more [...]