Abstract：
BACKGROUND:SIRT3 is an important regulator in cell metabolism, and recent studies have shown that it may be involved in the pharmacological effects of metformin. However, the molecular mechanisms underlying this process are unclear. METHODS:The effects of SIRT3 on the regulation of oxidative stress and insulin resistance in skeletal muscle were evaluated in vitro. Differentiated L6 skeletal muscle cells were treated with 750 µmol/L palmitic acid to induce insulin resistance. SIRT3 was knocked down and overexpressed in L6 cells. SIRT3, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) p65, c-Jun N-terminal kinase 1 (JNK1), and superoxide dismutase 2 (SOD2) were evaluated by Western blotting. RESULTS:Over expression of SIRT3 increased glucose uptake and decreased ROS production in L6-IR cells as well as in L6 cells. Knock-down of SIRT3 induced increased production of ROS while decreased glucose uptake in both L6 and L6-IR cells, and these effects were reversed by N-acetyl-L-cysteine (NAC). Metformin increased the expression of SIRT3 (1.5-fold) and SOD2 (2-fold) while down regulating NF-κB p65 (1.5-fold) and JNK1 (1.5-fold). Knockdown of SIRT3 (P < 0.05) reversed the metformin-induced decreases in NF-κB p65 and JNK1 and the metformin-induced increase in SOD2 (P < 0.05). CONCLUSIONS:Upregulated SIRT3 is involved in the pharmacological mechanism by which metformin promotes glucose uptake. Additionally, SIRT3 may function as an important regulator of oxidative stress and a new alternative approach for targeting insulin resistance-related diseases.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Song Y,Shi J,Wu Y,Han C,Zou J,Shi Y,Liu Zsubject
Has Abstractpub_date
2014-01-01 00:00:00pages
1523-9issue
8eissn
0366-6999issn
2542-5641journal_volume
127pub_type
杂志文章abstract：OBJECTIVE:To improve the prognosis and therapeutic efficacy of Waldeyer's ring non-Hodgkin lymphoma (NHL-WR), combined radio-chemotherapy was used to treat the patients with NHL-WR and prognostic factors were analyzed. METHODS:Ninety patients with stage I-IV NHL-WR were treated with combined radio-chemotherapy. 4000 c...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2000-02-01 00:00:00
abstract：BACKGROUND:Dynesys dynamic stabilization system was first implanted in patients in 1994, and introduced to China in 2007. Therefore, it was a new technique for Chinese orthopedics and hence necessary to collect clinical data about Dynesys in China. The objective of this study was to report the preliminary results of Dy...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2013-11-01 00:00:00
abstract：:With overall analysis of symptoms and signs of myasthenia gravis (MG) basing on "Pi (Spleen) Deficiency" [symbol: see text] theory and with years of our clinical experience in treating MG, we performed a pharmacological study of Astragalus saponins and Buzhong Yiqi Compound (Tonic granulae invigorating vital energy) i...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1994-04-01 00:00:00
abstract：BACKGROUND:There have been no mortality/morbidity endpoint studies with losartan in Chinese heart failure patients. The objective was to evaluate the effects of high-dose vs. low-dose losartan on clinical outcomes in Chinese subjects with heart failure. METHODS:This study was a post hoc analysis of the Heart failure E...
journal_title：Chinese medical journal
pub_type： 杂志文章,多中心研究,随机对照试验
doi：
更新日期：2012-11-01 00:00:00
abstract：BACKGROUND:Bone grafting is commonly used to repair bone defects. As the porosity of the graft scaffold increases, bone formation increases, but the strength decreases. Early attempts to engineer materials were not able to resolve this problem. In recent years, nanomaterials have demonstrated the unique ability to impr...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:The RV lead position, either RVA or RVHS appears to make no difference in the response to CRT but the LV lead placement play a vital role.9,30 The latest activated regions of LV or areas without transmural myocardial scar for an optimal CRT are preferred. Currently, data demonstrate that no significant difference of c...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2013-08-01 00:00:00
abstract：BACKGROUND:Irritable bowel syndrome (IBS) is reported associated with the alteration of gut microbial composition termed as dysbiosis. However, the pathogenic mechanism of IBS remains unclear, while the studies of Chinese individuals are scarce. This study aimed to understand the concept of dysbiosis among patients wit...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.1097/CM9.0000000000000192
更新日期：2019-04-20 00:00:00
abstract：OBJECTIVE:To evaluate the clinical value of sequential subtraction scintigraphy (SSS) with 99mTc red blood cell (RBC) for the early detection of gastrointestinal (GI) bleeding. METHODS:Ninety patients referred with clinical evidence of GI bleeding underwent 99mTc-RBC scintigraphy with digital gamma camera after labeli...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：BACKGROUND:Medical consortium is a specific vertical integration model of regional medical resources. To improve medical resources utilization and control the health insurance costs by fee-for-service plans (FFS), capitation fee and diagnosis-related groups (DRGs), it is important to explore the attitudes of doctors to...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2011-01-01 00:00:00
abstract：BACKGROUND:In county-level tuberculosis (TB) dispensaries in China, the accurate diagnosis of sputum smear-negative pulmonary tuberculosis (SNPT) needs to be improved by developing and validating clinical and radiographic predictors. METHODS:The study was conducted simultaneously in three counties per province in Chon...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
abstract：BACKGROUND:Serum antinuclear antibodies (ANAs) are positive in some patients with chronic lymphocytic leukemia (CLL), but the prognostic value of ANAs remains unknown. The aim of this study was to evaluate the role of ANAs as a prognostic factor in CLL. METHODS:This study retrospectively analyzed clinical data from 21...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.1097/CM9.0000000000000114
更新日期：2019-03-05 00:00:00
abstract：BACKGROUND:P53 is one of the most studied tumor suppressors in the cancer research, and over 50% of human tumors carry P53 mutations. MDM-2 is amplified and/or overexpressed in a variety of human tumors of diverse tissue origin. The aim of this study was to examine the expression of P53 protein and MDM-2 protein in gli...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2011-08-01 00:00:00
abstract：BACKGROUND:The heavy incidence and mortality of hemorrhagic fever with renal syndrome, as well as no specific drugs in curing the disease, clearly indicate the need for development of the more effective hantavirus vaccine. Refining the DNA vaccination strategy to elicit more clinically efficacious immune responses is n...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2005-02-20 00:00:00
abstract：BACKGROUND:Some individuals have multiple renal arteries. Severe stenosis in one of the arteries may cause refractory hypertension. The detection of stenosis within one of the multiple renal arteries usually required invasive procedures, such as computed tomographic angiography (CTA) and magnetic resonance angiography ...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2011-06-01 00:00:00
abstract：BACKGROUND:There are no conclusive studies evaluating the interaction between icariin and exercise for treatment of osteoporosis; the efficacy and safety of this treatment combination remains to be evaluated. The purpose of this study was to investigate the effects of icariin treatment combined with exercise therapy on...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2012-05-01 00:00:00
abstract：BACKGROUND:In patients suffering from acute pancreatitis, the pathogenesis is not completely understood, and several recent studies in vitro suggested that heat shock proteins might play an important role in cell signaling. To investigate the possible role of extracellular heat shock protein 70 (Hsp70) in pancreatitis,...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2008-08-05 00:00:00
abstract：BACKGROUND:We conducted a prospective, multicenter investigation of incidence, management and outcome of neonatal acute respiratory disorders (NARD), and evaluated related perinatal risk factors and efficacy of respiratory therapies in neonatal intensive care units (NICUs) in a Chinese neonatal network. METHODS:Data w...
journal_title：Chinese medical journal
pub_type： 杂志文章,多中心研究
doi：
更新日期：2010-10-01 00:00:00
abstract：BACKGROUND:Cardiovascular diseases, especially coronary artery disease (CAD), are major causes of death in industrialized countries. Elevated concentrations of plasma homocysteine (Hcy) have been associated with an increased risk of CAD. Increased plasma levels of chemokine, characterized by their ability to induce mig...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2004-11-01 00:00:00
abstract：:198 preterm delivery placentas of 28 weeks to less than 37 weeks pregnancy were analyzed. Gross examination revealed that the differences of placenta previa and low implantation (2.91%), bipartate placenta and rupture of marginal sinus (0.97% respectively), large placenta (2.91%), short cord (4.85%), velamentous inser...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：OBJECTIVE:To focus on the asthmatic pathogenesis and clinical manifestations related to epithelial sodium channel (ENaC)/chlorine ion channel. DATA SOURCES:The data analyzed in this review were the English articles from 1980 to 2015 from journal databases, primarily PubMed and Google Scholar. The terms used in the lit...
journal_title：Chinese medical journal
pub_type： 杂志文章,评审
doi：10.4103/0366-6999.162494
更新日期：2015-08-20 00:00:00
abstract：BACKGROUND:The most common obstruction sites for obstructive sleep apnea hypopnea syndrome (OSAHS) are the oropharynx and the glossopharyx. The diagnosis of glossopharyngeal airway obstruction is difficult. The study aimed to assess the effect of upper airway reconstructive surgery for OSAHS based on polysomnography (P...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
abstract：BACKGROUND:Assessment of perfusion in the early period of acute renal failure (ARF) is important, and can not be made by conventional ultrasound. The aim of this study was to prospectively test in a rabbit ARF model whether real-time contrast-enhanced ultrasound (CEUS) can quantitatively evaluate the hemodynamic change...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2012-02-01 00:00:00
abstract：OBJECTIVES:To study mitogen-activated protein kinase (MAPKs) activation in fibroblast-like synoviocytes (FLS) of rheumatoid arthritis (RA) under the stimulation of IL-1 beta, and to elucidate the role of protein tyrosine kinase (PTK) in the activation of MAPKs. METHODS:Primary cultures of RA FLS were used. Western blo...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2000-10-01 00:00:00
abstract：:We presented the experimental results of endothelial cells (EC) seeding in small caliber interpositional dacron grafts of canine carotid arteries. Six weeks after surgery, 9 (56.25%) seeded, and 6 (37.5%) control grafts remained patent. The mean thrombus-free surface area was 83.4% in the seeded and 62% in the control...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1989-08-01 00:00:00
abstract：OBJECTIVE:To investigate the correlation between glutathione S-transferase (GST) M1 and T1 genotypes and endometriosis risk (EM). METHODS:Polymerase chain reaction (PCR) technique was used to detect the presence or absence of the GSTM1 and GSTT1 genes in genomic DNA isolated from the blood samples of 68 Han Chinese wo...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2003-05-01 00:00:00
abstract：BACKGROUND:Double plate osteosynthesis is the standard treatment for intra-articular fractures of the distal humerus. However, there is still controversy concerning dual plate positions in terms of providing optimal stability. The purpose of this retrospective study was to compare the clinical outcomes in patients with...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2013-06-01 00:00:00
abstract：BACKGROUND:Acinetobacter baumannii is one of the main gram-negative bacilli in clinical practice. Nosocomial infections caused by multi-drug resistance Acinetobacter baumannii is very difficult to treat. This study was designed to investigate the antimicrobial resistance characteristics and four resistant gene expressi...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2005-01-20 00:00:00
abstract：OBJECTIVE:To compare the effect of ouabain on the blood pressure of rats with that of digoxin to find the evidences of the relationship between endogenous ouabain (EO) and development of hypertension. METHODS:Sprague-Dawley rats, which were divided into 3 groups, were infused with ouabain (23 x 75 micrograms.kg-1/day,...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1997-12-01 00:00:00
abstract：BACKGROUND:MicroRNAs (miRNAs) are small noncoding regulatory RNAs whose aberrant expression may be observed in many malignancies. However, few data are yet available on human primary medulloblastomas. This work aimed to identify that whether miRNAs would be aberrantly expressed in tumor tissues compared with non-tumoro...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2009-10-20 00:00:00
abstract：:The radiographic measurement of the prevertebral soft tissue of cervical vertebrae was performed in 87 normal adults. According to the results of the measurement, 10 mm and 20 mm were used as the upper limit normal values of the retropharyngeal and retrotracheal space respectively. We conclude that although the widene...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
