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تعداد نتایج: 4548 فیلتر نتایج به سال:
Alternative strategies beyond current chemotherapy and radiation therapy regimens are needed in the treatment of advanced stage and recurrent endometrial cancers. There is considerable promise for biologic agents targeting the extracellular signal-regulated kinase (ERK) pathway for treatment of these cancers. Many downstream substrates of the ERK signaling pathway, such as glycogen synthase kin...
We have shown recently that, in the absence of mRNA, 1 molecule of nonacylated tRNA binds to the large ribosomal subunit of rat liver with a high affinity constant (Buisson, M., Reboud, A.M., Dubost, S., and Reboud, J. P. (1979) Biochem. Biophys. Res. Commun. 90,634-640). In this paper, free and tRNA-bound 60 S subunits were treated with increasing concentrations of LiCl to obtain information o...
Carbon materials, such as graphite and activated carbon, have been widely used electrodes in batteries electric double-layer capacitors (EDLCs). Graphene, which has an extremely thin sheet-like structure, is considered a fundamental carbon material. However, it was less investigated electrode material than carbons. This because graphene relatively new difficult to handle. using can enhance the ...
Abstract The use of lithium in manufacturing lithium-ion batteries for hybrid and electric vehicles, along with stringent environmental regulations, have strongly increased the need its sustainable production recycling. required purity compounds used battery components is very high (> 99.5%). In this work, a solvometallurgical process that exploits differences solubility between LiCl other a...
Incubation of hepatocytes from fasted rats with LiCl provoked a concentration- and time-dependent activation of glycogen synthase. This effect was observed in the absence of glucose in the incubation medium. No changes in the intracellular concentrations of ATP or glucose-6-phosphate were detected. Lithium was also able to activate glycogen synthase in the absence of extracellular calcium. If h...
We have previously shown that PTH induction of c-fos expression in the rat osteoblastic cell line UMR 106-01 requires the phosphorylation of cAMP response element-binding protein (CREB) at serine 133. Here we show that this event is not sufficient for induced transcriptional activity in UMR cells. Serine 129, but not the casein kinase II sites (serines 108, 111, 114, 117, and 121), also plays a...
We have studied the relationship between the occurrence of chromatin diminution and the developmental behavior of somatic blastomeres in early development of the nematode Parascaris univalens. A cytological and immunocytochemical analysis of chromatin diminution was performed in P. univalens embryos exposed to 'vegetalizing' (LiCl) and 'animalizing' (NaSCN) substances during early developmental...
Relapse triggered by drug-paired cues is a major obstacle for successful treatment of drug abuse. Patterns of brain activation induced by drug-paired cues have been identified in human and animal models, but lack of specificity poses a serious problem for craving or relapse interpretations. The goal of this study was to compare brain responses to contextual cues paired with a rewarding versus a...
Pavlovian conditioning processes contribute to the etiology of nicotine dependence. Conditioning involving interoceptive stimuli is increasingly recognized as playing a role in many diseases and psychopathologies, including drug addiction. Previous animal research on diminishing the influence of interoceptive conditioning has been limited to antagonism and nonreinforced exposures to the drug st...
Novel agents need to be developed to overcome the limitations of the current melanoma therapeutics. Atractylenolide I (AT-I) is a sesquiterpene compound isolated from atractylodis macrocephalae rhizoma. Previous findings demonstrated that AT-I exhibited cytotoxic action in melanoma cells. However, the molecular mechanisms of AT‑1's anti-melanoma properties remain to be elucidated. In the presen...
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