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| Wu,C-W.; Biggar,K.K.; Storey,K.B.. |
| An important disease among human metabolic disorders is type 2 diabetes mellitus. This disorder involves multiple physiological defects that result from high blood glucose content and eventually lead to the onset of insulin resistance. The combination of insulin resistance, increased glucose production, and decreased insulin secretion creates a diabetic metabolic environment that leads to a lifetime of management. Appropriate models are critical for the success of research. As such, a unique model providing insight into the mechanisms of reversible insulin resistance is mammalian hibernation. Hibernators, such as ground squirrels and bats, are excellent examples of animals exhibiting reversible insulin resistance, for which a rapid increase in body weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Metabolic depression; T2DM; PPAR-γ; MicroRNA; Glucose transport; Akt. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100001 |
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| Xu,Y.; Xu,Y.; Luan,H.; Jiang,Y.; Tian,X.; Zhang,S.. |
| Phosphorylated-cyclic adenosine monophosphate response element-binding protein (Phospho-CREB) has an important role in the pathogenesis of myocardial ischemia. We isolated the iridoid glycoside cornin from the fruit of Verbena officinalis L, investigated its effects against myocardial ischemia and reperfusion (I/R) injury in vivo, and elucidated its potential mechanism in vitro. Effects of cornin on cell viability, as well as expression of phospho-CREB and phospho-Akt in hypoxic H9c2 cells in vitro, and myocardial I/R injury in vivo, were investigated. Cornin attenuated hypoxia-induced cytotoxicity significantly in H9c2 cells in a concentration-dependent manner. Treatment of H9c2 cells with cornin (10 µM) blocked the reduction of expression of phospho-CREB... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cornin; Myocardial ischemia and reperfusion; CREB; Akt; Hypoxia. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000200608 |
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| Wang,Z.Y.; Zhang,W.; Li,X.Z.; Han,Y.; Chen,Y.P.; Liu,Z.; Xie,L.P.; Ji,Y.; Lu,X.. |
| The efficacy of endothelin receptor antagonists in protecting against myocardial ischemia/reperfusion (I/R) injury is controversial, and the mechanisms remain unclear. The aim of this study was to investigate the effects of CPU0123, a novel endothelin type A and type B receptor antagonist, on myocardial I/R injury and to explore the mechanisms involved. Male Sprague-Dawley rats weighing 200-250 g were randomized to three groups (6-7 per group): group 1, Sham; group 2, I/R + vehicle. Rats were subjected to in vivo myocardial I/R injury by ligation of the left anterior descending coronary artery and 0.5% sodium carboxymethyl cellulose (1 mL/kg) was injected intraperitoneally immediately prior to coronary occlusion. Group 3, I/R + CPU0213. Rats were subjected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endothelin receptor antagonist; Myocardial ischemia/reperfusion injury; Akt; ENOS. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001100011 |
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| Zhang,S.; Zhang,Y.; Qu,J.; Che,X.; Fan,Y.; Hou,K.; Guo,T.; Deng,G.; Song,N.; Li,C.; Wan,X.; Qu,X.; Liu,Y.. |
| Cetuximab is widely used in patients with metastatic colon cancer expressing wildtype KRAS. However, acquired drug resistance limits its clinical efficacy. Exosomes are nanosized vesicles secreted by various cell types. Tumor cell-derived exosomes participate in many biological processes, including tumor invasion, metastasis, and drug resistance. In this study, exosomes derived from cetuximab-resistant RKO colon cancer cells induced cetuximab resistance in cetuximab-sensitive Caco-2 cells. Meanwhile, exosomes from RKO and Caco-2 cells showed different levels of phosphatase and tensin homolog (PTEN) and phosphor-Akt. Furthermore, reduced PTEN and increased phosphorylated Akt levels were found in Caco-2 cells after exposure to RKO cell-derived exosomes.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cetuximab; Exosome; PTEN; Akt; Colon cancer. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000100609 |
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| Márquez,José L; Hirabara,Sandro M; Fiamoncini,Jarlei; Hatanaka,Elaine; Alba-Loureiro,Tatiana C; Lima-Salgado,Thais M. de; Curi,Rui; Salazar,Luis A. |
| El Síndrome Metabólico corresponde a una serie de trastornos relacionados con obesidad e inactividad física. Poco se conoce respecto de la falta de ejercicio, en estadios tempranos del desarrollo, en la susceptibilidad a un fenotipo insulinoresistente inducido por una dieta alta en grasas. Akt juega un rol clave en la síntesis de proteínas y el transporte de glucosa en el músculo esquelético y ha mostrado ser regulada por la actividad muscular. El objetivo del presente estudio fue determinar el efecto de la inactividad física temprana sobre el crecimiento muscular y la susceptibilidad de adquirir un fenotipo diabético y evaluar su relación con la expresión de Akt. Cuarenta ratas Wistar fueron distribuidas en 2 grupos (Grupos Control, Std) y Restricción de... |
| Tipo: Journal article |
Palavras-chave: Akt; Inactividad física; Insulinoresistencia. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100043 |
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| Ng,Di-Lin; Tie,Shin-Wei; Ong,Pei-Chin; Lim,Wyi-Sian; Tengku-Muhammad,Tengku-Sifzizul; Choo,Quok-Cheong; Chew,Choy-Hoong. |
| The Liver X Receptor (LXR) and Pregnane X Receptor (PXR) are members of the nuclear receptor superfamily. Previously, they have been classified as important regulators of lipid homeostasis. However, recent studies have shown that they may be implicated in anti-inflammatory responses as well. This study shows that Tumour Necrosis Factor-α (TNF-α) treatment reduces both LXR-α and PXR mRNA expression. However, pre-treatment with rapamycin, an mTOR inhibitor, followed by TNF-α stimulation, significantly induces LXR-α and PXR mRNA expression to ~17- and ~2-fold, respectively. This suggests that mTORC1, a multi-molecular complex of which mTOR is a member, may act as a negative regulator that inhibits the induction of LXR-α and PXR as anti-inflammatory... |
| Tipo: Journal article |
Palavras-chave: Akt; C-Jun; Homeostasis; Inflammation; MKK7; Transcription factor. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000300008 |
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