BACKGROUND The aim of this study was to evaluate cyclooxygenase-2 (COX-2) immunoreactivity in colorectal adenocarcinomas and to find correlations with different pathological features. MATERIALS AND METHODS This study included 35 cases of colorectal carcinoma for which surgical colectomy specimens were collected. Immunohistochemical staining of COX-2 (cyclooxygenase-2) is done by using the Str...

Cyclooxygenase, an enzyme involved in the conversion of C-20 acids to prostaglandins, exists in two isoforms. COX-1 is constitutively expressed and has a gastroprotective function. COX-2, induced at the site of injury, is responsible for the expression of pro-inflammatory prostaglandins. Despite overall similarit ies, COX-1 and COX-2 show subtle difference in amino acid composition at the activ...

The aim of this research was to investigate the Cyclooxygenase-2 (COX-2) selective inhibition effect on haloperidol-induced catatonia. In this study, the effect of orally, acutely and Sub-chronically administrations of compound 11b [1-(phenyl)-5-(4-methylsulfonylphenyl)-2-ethylthioimidazole] (2, 4 and 8 mg/kg), a newly selective COX-2 inhibitor, was investigated against the haloperidol-induced ...

The aim of this research was to investigate the Cyclooxygenase-2 (COX-2) selective inhibition effect on haloperidol-induced catatonia. In this study, the effect of orally, acutely and Sub-chronically administrations of compound 11b [1-(phenyl)-5-(4-methylsulfonylphenyl)-2-ethylthioimidazole] (2, 4 and 8 mg/kg), a newly selective COX-2 inhibitor, was investigated against the haloperidol-induced ...

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 ...

OBJECTIVE To explore the potential clinical application of the oncolytic activity of cyclooxygenase 2 (COX-2) promoter-based, conditional, replication-selective adenovirus vector for hypopharyngeal squamous cell carcinoma. DESIGN In vivo study and retrospective study. SETTING Kobe University Hospital, Kobe, Japan. SUBJECTS Expression of COX-2 in hypopharyngeal cancers treated at Kobe Univ...

Methyl gallate (MG) is a medicinal herbal product that is isolated from Paeonia lactiflora that inhibits cyclooxygenase-2 (COX-2) dependent phases of prostaglandin D2 (PGD2) generation in bone marrow-derived mast cells (BMMC) in a concentration-dependent manner with an IC50 values of 17.0 microM. This compound also found inhibited the COX-2-dependent conversion of the exogenous arachidonic acid...

Vogiagis, Daphne, Eric M. Glare, Aileen Misajon, Wendy Brown, and Paul E. O’Brien. Cyclooxygenase-1 and an alternatively spliced mRNA in the rat stomach: effects of aging and ulcers. Am J Physiol Gastrointest Liver Physiol 278: G820–G827, 2000.—Prostaglandins play a critical role in gastric mucosal cytoprotection and decrease progressively with age. Cyclooxygenase (COX), the rate-limiting enzym...