نتایج جستجو برای: rb1
تعداد نتایج: 1799 فیلتر نتایج به سال:
Background The use of different methods for the processing of ginseng can result in alterations in its medicinal properties and efficacy. White ginseng (WG), frozen ginseng (FG), and red ginseng (RG) are produced using different methods. WG, FG, and RG possess different pharmacological properties. Methods WG, FG, and RG extracts and pure ginsenosides were administered to rats to study the pha...
Ginsenoside Rb1 has been demonstrated with neuroprotective effects, but the mechanisms remain unclear. This study aimed to probe the effects and mechanisms of ginsenoside Rb1 on activation of autophagy in glutamate-injured neurons. Ginsenoside Rb1 of exponential concentrations (1.2, 12, 120 microM) or autophagy inhibitor 3-methyladenine (5mM) was added to culture medium for cortical neurons aft...
MicroRNAs play important roles in the pathogenesis of cancers by inhibiting gene expression at posttranscriptional level. Here, we identified that miR-590 and its predicted target gene RB1 are differentially expressed in T-cell acute lymphoblastic leukaemia (T-ALL). The correlation between miR-590 and RB1 was further confirmed in 395 T-ALL patients. In T-ALL cell lines, miR-590 promoted the cel...
Deficiencies in DNA double-strand break (DSB) repair lead to genetic instability, a recognized cause of cancer initiation and evolution. We report that the retinoblastoma tumor suppressor protein (RB1) is required for DNA DSB repair by canonical non-homologous end-joining (cNHEJ). Support of cNHEJ involves a mechanism independent of RB1's cell-cycle function and depends on its amino terminal do...
چکیده : جینسنگ یکی از سودمندترین گیاهاندارویی است که مکانیسمهای ضد دیابتی آن بیش از یک دهه میباشد که مورد مطالعه قرار گرفته است. اگر چه اثر تحریکی جینسنوزیدهای مختلف مشتق شده از گیاه جینسنگ بر جابجایی مولکول ناقل گلوکز ایزوتیپ - 4 در سلولهای بافت چربی و عضلانی مورد مطالعه قرار گرفته اند ولی اثر جنسنوزید rb1 بر بیان این مولکول ناقل تا کنون گزارش نگردیده است. به همین جهت ما در صدد آن برآمدی...
BACKGROUND Ginsenoside Rb1, a principle active ingredients of Panax ginseng, has been shown to lower blood glucose in animals and increase insulin secretion in cultured insulinoma cells. The aim of this study was to determine the effects of daily ginsenoside Rb1 supplementation on circulating glucose and insulin levels in men during a 5-day recovery period after an acute bout of resistance exer...
Ginseng is an important herbal drug that has been used worldwide for many years. Ginsenoside Rb1 (G-Rb1), the major pharmacological extract from ginseng, possesses a variety of biological activities in the cardiovascular systems. Here, we conducted a preclinical systematic review to investigate the efficacy of G-Rb1 for animal models of myocardial ischemia/reperfusion injury and its possible me...
microRNAs play an important roles in cell growth, differentiation, proliferation and apoptosis. They can function either as tumor suppressors or oncogenes. We found that the overexpression of miR-192 inhibited cell proliferation in A549, H460 and 95D cells, and inhibited tumorigenesis in a nude mouse model. Both caspase-7 and the PARP protein were activated by the overexpression of miR-192, thu...
Imprinting of the human RB1 gene is due to the presence of a differentially methylated CpG island (CGI) in intron 2, which is part of a retrocopy derived from the PPP1R26 gene on chromosome 9. The murine Rb1 gene does not have this retrocopy and is not imprinted. We have investigated whether the RB1/Rb1 locus is unique with respect to these differences. For this, we have compared the CGIs from ...
Locally advanced squamous cell carcinoma of the head and neck (SCCHN) that is not associated with human papillomavirus (HPV) has a poor prognosis in contrast to HPV-positive disease. To better understand the importance of RB1 activity in HPV-negative SCCHN, we investigated the prognostic value of inhibitory CDK4/6 phosphorylation of RB1 on threonine 356 (T356) in archival HPV-negative tumor spe...
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