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Iran J Pharm Res. 2010;9(4):387-93.

The selective cyclooxygenase-2 inhibitor, the compound 11b improves haloperidol induced catatonia by enhancing the striatum dopaminergic neurotransmission.

Iranian journal of pharmaceutical research : IJPR

Hadi Fathi-Moghaddam, Mehdi Shafiee Ardestani, Mostafa Saffari, Ali Jabbari Arabzadeh, Mitra Elmi

Affiliations

  1. Depattment of Physiology and Physiology Research Center, School of Medicine, Jondishapour University of Medical Sciences, Ahwaz, Iran.
  2. Department of Pharmacology, Razi institute for drug research, College of Medicine, Iran University of Medical Sciences, Tehran, Iran.
  3. Department of Medicinal Chemistry and Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran .
  4. Department of Pharmaceutics, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

PMID: 24381603 PMCID: PMC3870062

Abstract

A substantial amount of evidence has proposed an important role for Cyclooxygenase-2 (COX-2) enzyme in brain diseases and affiliate disorders. The purpose of this research was studying the effects of COX-2 selective inhibition on haloperidol-induced catatonia in an animal model of drug overdose and Parkinson's disease (PD). In this study, the effect of acute and Sub-chronic oral administration of a new selective COX-2 inhibitor, i.e. the compound 11b or 1-(Phenyl)-5-(4-methylsulfonylphenyl)-2-ethylthioimidazole, in a dosage of 2, 4 and 8 mg/kg on haloperidol-induced catatonia was evaluated and compared to the standard drug scopolamine (1 mg/kg) by microanalysis of Striatum dopaminergic neurotransmission. The results showed a very high potency for 11b in improving the catalepsy by enhancing the dopaminergic neurotranmission (p < 0.05). In addition, statistical analysis showed the dose- and time-dependent behavior of the observed protective effect of 11b against the haloperidol-induced catatonia and enhancement of the dopaminergic neurotransmission. These findings are additional pharmacological data that suggest the effectiveness of COX-2 inhibition in treatment of schizophreny-associated rigidity.

Keywords: Catalepsy; Compound 11b; Dopaminergic neurotransmission; Nigrostriatal

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