[Changes of pathologic feature and microtubulin associated protein 2 in nervous system of hens with organophosphate-induced delayed neuropathy induced by 2,4,6-trimethylbenzoyl phenylphosphonate].

Objective: To develop the organophosphate-induced delayed neuropathy (OPIDN) hen model with 2,4,6-trimethylbenzoyl phenylphosphonate (TOCP), and observe the change of pathology and investigate the alterations of microtubulin associated protein 2 (MAP2).

Methods: 48 adult hens were randomly divided into four groups, including three experimental groups and control group (n = 12 each group). The hens in three experimental groups were treated with TOCP by gavage at single dosages of 250, 500 and 750 mg/kg respectively while the control hens received an equivalent volume of corn oil by gavage.

[Experimental study on protective effects of HupA in the treatment of isocarbophos poisoning].

Objective: To investigate the therapeutic and prophylactic efficiency of HupA in mice with acute isocarbophos poisoning, and the protective effects of the HupA on AChE inhibited by isocarbophos.

Methods: Mice were randomizedly divided into the non-treatment group, the atropine control group, the HupA treatment group and the atropine and HupA combined treatment group. Toxic signs and survival rates were observed and compared among these groups.

[Advances on study of organophosphate poisoning prevented by Huperzine A].

Currently, it is a concerned project in medicine to study the effective methods for treatment of organophosphate (OP) poisoning. Huperzine A is a potent, reversible red cells acetylcholinesterases (AChE) inhibitor, which shows high specificity for AChE preserving scavenger capacity of plasma butyrylcholinesterase (BuChE) for OP agents, and cross the blood-brain barrier smoothly preventing the AChE in CNS, so the CNS damages induced by the acute OP poisoning were prevented. These review summarizes the results of experimental in animals, prevention mechanism, and prevention value of HupA against OP poison.