Unlike plants, fungi cannot synthesize their own food using energy from the sun. Instead, they must draw their food from a source--sometimes a tree. Fungi extend fibers into the host plant, absorbing its nutrients and depleting its energy, causing the tree to decline.
Hydroxyzine (/haÉªËdrÉksÉ¨ziËn/ ; sold as Vistaril, Atarax) is a first-generation antihistamine of the diphenylmethane and piperazine class.It was first synthesized by Union Chimique Belge in 1956 and was marketed by Pfizer in the United States later the same year, and is still in widespread use today.ydroxyzine's predominant mechanism of action is as a potent H1 receptor inverse agonist (K i = 2 nM). Unlike many other first-generation antihistamines, it has very low affinity for the mACh receptors (K i and in accordance, has a low propensity for producing anticholinergic side effects.
Anticholinergic drugs block the action of the neurotransmitter acetylcholine on neurons in the brain. Thus, anticholinergic drugs are used to decrease tremors, rigidity, and drooling in patients under the age of 60.Unfortunately, acetylcholine is essential for proper neurotransmission in other areas of the brain.owever, anticholinergic drugs decrease the influence of acetylcholine in the body, either by preventing its production, blocking its receptor sites, or breaking it down chemically. Thus, anticholinergic drugs are used to decrease tremors, rigidity, and drooling in patients under the age of 60.