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To evaluate the effect of age on the response of brains to an ischemic challenge, we subjected young and aged mice to transient forebrain ischemia, and analyzed the heat shock response and unfolded protein response, ubiquitin conjugation and SUMO conjugation, and O-linked β-N-acetylglucosamine modification of proteins (O-GlcNAcylation). The most prominent(More)
OBJECTIVES To investigate the effects of thyroid hormone on L-type calcium channel mRNA and L-type calcium current of atrium and ventricle. METHODS Sixteen New Zealand white rabbits were randomized into Thyroxine group (n=8) and Control group (n=8). In Throxine group, rabbits were injected intraperitoneally with L-thyroxine solution for 2 weeks (1(More)
This article deals with the influence of shear stress on endothelial NO synthesis, and the role of caveolae in shear stress-induced eNOS activation. Human umbilical vascular endothelial cells (HUVEC) were cultured and exposed to different levels of laminal shear stress and Filipin, the perfused cultures were collected, and NO(2-)/NO(3-) was detected using(More)
Sepsis is a systemic inflammatory response syndrome with high mortality, which results from severe infection and can lead to secondary organ dysfunction. It is one of the most common cause of death in intensive care unit. Clinical reports have shown that sepsis was often accompanied by thyroid dysfunction, which is called "low triiodothyronine (T3)"(More)
BACKGROUND Mesenchymal stem cells (MSC) have been shown to have potent immunoregulatory effects. They are able to mitigate inflammation in many contexts of immune disorders, including autoimmune diseases and graft-versus-host disease (GVHD). Endotoxemia can induce systematic inflammation in the body. In this study, we try to investigate whether MSC can(More)
OBJECTIVE To observe the effect of low-dose hydrocortisone on the requirement of norepinephrine and lactate clearance in patients with refractory septic shock, and to investigate the effect of stress dose corticosteroids in reversing septic shock and improving tissue oxygen supply. METHODS Seventy-seven septic shock patients with hypotension refractory to(More)
Application of glucocorticoids in sepsis or severe infection is disputable in clinic. In this experiment, we studied the effect of dexamethasone on nitric oxide synthases and whether dexamethasone could attenuate endotoxin-induced acute lung injury (ALI). SD rats received 5 mg/kg lipopolisaccharide (LPS) injection. Then arterial oxygen partial pressure(More)
Impaired function of the endoplasmic reticulum (ER stress) is a hallmark of many human diseases including stroke. To restore ER function in stressed cells, the unfolded protein response (UPR) is induced, which activates 3 ER stress sensor proteins including activating transcription factor 6 (ATF6). ATF6 is then cleaved by proteases to form the short-form(More)
BACKGROUND AND PURPOSE Impaired protein homeostasis induced by endoplasmic reticulum dysfunction is a key feature of a variety of age-related brain diseases including stroke. To restore endoplasmic reticulum function impaired by stress, the unfolded protein response is activated. A key unfolded protein response prosurvival pathway is controlled by the(More)
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