Activated human B lymphocytes express cyclooxygenase-2 and cyclooxygenase inhibitors attenuate antibody production.

Assessment of the Effects of Cyclooxygenase Inhibitors on the Immune Status Following Surgery in Adult Male Rats

Background and Objectives: Surgery via different mechanisms causes immunosuppression in the post-operative period. The aim of the present study was to investigate the effects of preoperative administration of cyclooxygenase inhibitors on blood levels of Interleukin-2 (IL-2), Interferon-γ (IFN-γ), Tumor Necrosis Factor-α (TNF-α), white blood cells (WBCs) and lymphocytes. Methods: Seventy-five ma...

Activation by Cyclooxygenase-2 Inhibitors T Lymphocytes: Regulation of T Cell Induction of Cyclooxygenase-2 on Activated

Thrombin up-regulates tissue factor pathway inhibitor-2 synthesis through a cyclooxygenase-2-dependent, epidermal growth factor receptor-independent mechanism.

The serine proteinase inhibitor tissue factor pathway inhibitor-2 (TFPI-2) inhibits the tissue factor-factor VIIa complex and thereby impairs factor Xa and subsequently thrombin generation. Here we show that thrombin itself up-regulates TFPI-2 mRNA and protein expression in human liver myofibroblasts, a cell type shown to express high levels of TFPI-2 (Neaud, V., Hisaka, T., Monvoisin, A., Bedi...

Designing and Synthesis of Novel Celecoxib Derivatives with Aminosulfonylmethyl and Azidomethyl Substituents as Selective Cyclooxygenase-2 Inhibitors

Introduction: Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) are used in treating pathologic conditions such as fever, pain and inflammation by inhibiting cyclooxygenase and consequently prostaglandin production. Recently , the discovery of different isoforms of this enzyme, Cyclooxygenase-1 (COX-1) and Cyclooxygense-2 (COX-2), has led to the synthesis and introduction of novel drugs with selec...

Cyclooxygenase-2 inhibitors attenuate angiotensin II-induced oxidative stress, hypertension, and cardiac hypertrophy in rats.

Angiotensin II is an important oxidative stress mediator. Our previous studies have indicated that the potent antioxidative properties of acetylsalicylic acid play an important role in its cardiovascular protective effects. There are some ongoing controversies concerning the use of selective cyclooxygenase-2 inhibitors in cardiovascular disease. The aim of this study was to determine whether th...