OBJECTIVES The purpose of this study was to examine whether tumor necrosis factor-alpha (TNF-alpha) is released directly from the ischemic myocardium undergoing reperfusion. BACKGROUND Tumor necrosis factor-alpha is a protein hormone produced by systemic leukocytes (primarily by activated macrophages). It has been implicated as a systemic mediator in the development of septic shock and other ...

Background: Extractions of Lessertia frutescens (Lf) are shown to have immune modulation, anti-inflammatory and antioxidant properties. However, Lf is also cytotoxic, antiproliferative, pro-apoptotic in vitro. Furthermore, extractions may influence steroidogenesis. Nevertheless, the impact on Leydig cell function has not previously been investigated. As tumor necrosis factor-alpha (TNF-α) known...

INTRODUCTION Gender dysphoria (GD) is characterized by a marked incongruence between experienced gender and one's assigned at birth. Transsexual individuals present higher prevalence of psychiatric disorders when compared to non-transsexual populations, it has been proposed that minority stress, i.e., discrimination or prejudice, relevant impact on these outcomes. Transsexuals also show increas...

Background: Social stress is a factor involved in the etiology of many diseases. Also, gender is another factor which predisposes individuals to certain disease. Results from animal and human studies suggest that socially-stressed men are more vulnerable to catching diseases compared to socially-stressed women. Materials and Methods: The role of chronic social stress and gender were examined in...

Although detrimental effects of tumor necrosis factor-α (TNF-α) have been reported in failing myocardium, clinical trials using TNF-α antagonists did not show the benefit of TNF-α inhibition in patients with chronic heart failure (CHF). The double-edged effects of TNF-α/Toll-like receptors (TLRs)-related proinflammatory cytokines and downstream signal transduction, nuclear factor (NF)-κB activa...

Proinflammatory cytokine tumor necrosis factor-alpha (TNF-α) is a crucial effector of immune responses in the brain that participates in the pathogenesis of several acute and chronic neurodegenerative disorders. Accumulating evidence has suggested that TNF-α negatively regulates embryonic and adult neurogenesis. However, the effect of TNF-α on cell fate decision in human neural progenitor cells...