The Grayanotoxin
Grayanotoxin is previously called as rhodotoxin, acetylandromedol, and andromedotoxin. It is caused by honey poisoning or honey intoxication.
Honey intoxication is triggered by the ingestion of honey made from the rhododendrons’ nectar. It is the gyananotoxins, which initiates the poisoning. The plant species is different from the specific grayanotoxins. The compounds included in the grayanotoxins are polyhydroxylated cyclic hydrocarbons and diterpenes, which do not have nitrogen. Other terminologies given to the illness is mad honey intoxication, grayanotoxin poisoning or rhododendron poisoning.
The intoxication typically lasts for less than twenty-four hours and is hardly ever deadly. Soon after the toxic honey is consumed the illness stimulates lightheadedness, frailty, too much sweating, nausea and queasiness. Other manifestations or indications of honey intoxication that can be experienced by the patient are low blood pressure or shock, tardiness of the beating of the heart attributed with an abnormality in the rhythm of the heart, sinus bradycardia, nodal rhythm, complete atrioventricular block and Wolff-Parkinson-White syndrome. The intoxication can be ascertained using some microscopes such as clinical microscopes.
As observed by means of microscopy using some clinical microscopes, the grayanotoxins bind to sodium channels in the cell membranes. The group II receptor site contained on a region of the sodium channel, which is included in the voltage-reliant activation and inactivation is the binding unit. The said compounds ignites activation, hence nerve and muscle cells are sustained in the depolarization status, during the time that the entrance into the cells of the calcium may be allowed as observed via microscopy using the clinical microscopes. This activity is analogous to the one being wielded by the alkaloids of veratrum and aconite. The entire experimental reactions of skeletal and muscles of the heart, nerves and the central nervous system are associated to the membrane effects as viewed by means of microscopy using clinical microscopes.
Interference may not be necessary since the intoxication is seldom deadly and recuperation typically takes place within twenty-four hours. The therapy with vasopressors or the agents that activate contraction of the muscular tissue of the capillaries and arteries is seldom needed. It is by administration of fluids and correction of bradycardia that serious low blood pressure commonly responds. It is by atropine therapy that the sinus bradycardia and conduction defects commonly respond. Nevertheless, in no less than one point the use of a momentary pacemaker was needed.
Clinical manifestations of poisoning transpire after a dose-reliant covert period of several minutes to two or extra hours and consist of salivation, vomiting, and around or near the mouth and extremity paresthesias or abnormal sensations. Marked low blood pressure and sinus bradycardia formed. There can also be loss of coordination and progressive muscular frailty ensues in case of serious intoxication. Extrasystoles and ventricular tachycardia having atrioventricular and intraventricular transmission turbulence also may transpire. Sporadic cases of convulsions have been documented.
It is the consumption of grayanotoxin-infected honey that usually triggers grayanotoxin intoxication as observed via microscopy using some clinical microscopes. Though the said intoxication may also ensue from the consumption of rhododendrons’ leaves, flowers and nectar. Nonetheless, not every kind of rhododendron generates grayanotoxins. The specie rhododendron ponticum has been linked with honey intoxication since 401 BC. It prevalently grows on the mountainous areas of the eastern Black Sea portion of Turkey. Intoxication of grayanotoxin in humans is seldom reported. Nevertheless, honey poisoning must be expected anywhere. Several cases can be attributed to a rise in the consumption of honey imported from other countries. There are other cases that ensued from consumption of improperly processed honey with the enhanced aspiration on natural foods in the American diet.
Everyone is deemed to be vulnerable to honey poisoning. The amplified want of the public for natural foods may ensue in extra number of cases of grayanotoxin intoxication. People who bought or got their honey from farmers who have only several hives are at enlarged risk. During commercial processing, the pooling of massive amounts of honey dissolves any toxic material.
