Protective effects of the antihistamine promethazine aginst acute paraxon-methyl and dicrotophos toxicity in adult rats

Syed M. Nurulain, Shreesh Ojha, Mohammad Shafiullah, Nadia Khan, Murat Oz, Bassem Sadek

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Organophosphorus compound poisoning (OPC) is a global issue. The problem is aggravated with the threats of terrorist use, unintentional use and irresponsible practice as happened recently in turmoil countries. The purpose of the current study was to investigate the old-generation antihistamine promethazine (PROM), a drug with multi pharmacological actions, as an antidote to extremely and highly toxic (WHO’s class IA and IB) OPC poisoning in experimental animal models conducted on adult male wistar rats. Experimental groups were treated intraperitoneal (i.p.) with LD70 of methyl paraoxon (MPOX), class IA and dicrotophos (DCP), class IB alone and a combination of simultaneously i.p. injection of PROM. Mortality was recorded at 30 minutes, 1, 2, 3, 4, 24, 48 hours post injections. RBC-AChE was measured in survivals. MPOX was chosen for further studies with atropine (ATR) and pralidoxime (PAM). In addition to Kaplan-Meir survival analysis, serum lactate dehydrogenase (LDH) and creatinine kinase (CK) from serum were measured in all experimental groups with MPOX. The results revealed significant protection by PROM in both MPOX and DCP intoxicated rats, though the inhibition of RBC-AChE was high. The observed results show that groups treated with a combination of MPOX and PROM or MPOX, PROM, and PAM were protected higher than those treated with MPOX and ATR or MPOX, ATR, and PAM though statistically not significantly different (P ≤ 0.05). No effect was observed on the activity of LDH and CK. The study concludes that PROM may be effectively used in OPC poisoning. However, risk/benefits trials and further studies with different doses and other OPC groups are warranted.

Original languageEnglish
Pages (from-to)17891-17901
Number of pages11
JournalInternational Journal of Clinical and Experimental Medicine
Issue number10
Publication statusPublished - Oct 30 2015


  • Antihistamine
  • Atropine
  • Dicrotophos
  • Organophosphorus poisoning
  • Paraoxon
  • Pralidoxime
  • Promethazine

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology


Dive into the research topics of 'Protective effects of the antihistamine promethazine aginst acute paraxon-methyl and dicrotophos toxicity in adult rats'. Together they form a unique fingerprint.

Cite this