Abstract:
BACKGROUND:MicroRNAs (miRNAs) contribute to tumorigenesis by acting as either oncogenes or tumor suppressor genes. In this study, we investigated the role of miR-145 in the pathogenesis of uveal melanoma. METHODS:Expression profiles of miRNAs in uveal melanoma were performed using Agilent miRNA array. Quantitative real-time polymerase chain reaction was used to screen the expression levels of miR-145 in normal uveal tissue, uveal melanoma tissue, and uveal melanoma cell lines. Lenti-virus expression system was used to construct MUM-2B and OCM-1 cell lines with stable overexpression of miR-145. Cell proliferation, cell cycle, and cell apoptosis of these miR-145 overexpression cell lines were examined by MTT assay and flow cytometry respectively. The target genes of miR-145 were predicted by bioinformatics and confirmed using a luciferase reporter assay. The expression of insulin-like growth factor-1 receptor (IGF-1R), insulin receptor substrate-1 (IRS-1) proteins was determined by Western blotting analysis. IRS-1 was knocked down in OCM-1 cells. TUNEL, BrdU, and flow cytometry assay were performed in IRS-1 knocked down OCM-1 cell lines to analyze its function. RESULTS:Forty-seven miRNAs were up regulated in uveal melanoma and 61 were down regulated. miR-145 expression was significantly lower in uveal melanoma sample and the cell lines were compared with normal uveal sample. Overexpression of miR-145 suppressed cell proliferation by blocking the G1 phase entering S phase in uveal melanoma cells, and promoted uveal melanoma cell apoptosis. IRS-1 was identified as a potential target of miR-145 by dual luciferase reporter assay. Knocking down of IRS-1 had similar effect as overexpression of miR-145. CONCLUSION:miR-145 might act as a tumor suppressor in uveal melanoma, and downregulation of the target IRS-1 might be a potential mechanism.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Li Y,Huang Q,Shi X,Jin X,Shen L,Xu X,Wei Wsubject
Has Abstractpub_date
2014-01-01 00:00:00pages
1410-6issue
8eissn
0366-6999issn
2542-5641journal_volume
127pub_type
杂志文章abstract:BACKGROUND:Overexpression of breast cancer-specific gene 1 (SNCG) is associated with poor prognosis in advanced breast cancer patients. This study aimed to determine the effects of SNCG knockdown in breast cancer cells by using small hairpin RNA (shRNA). METHODS:Four different SNCG shRNA oligonucleotides were designed...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-05-01 00:00:00
abstract::Filariasis control including a preparatory phase in the early 50s and two more extensive campaigns in the late 50s and 70s, has gained remarkable achievements. By the end of 1987, filariasis in 781 (90.4%) of 864 counties/cities was brought under control, i.e., the microfilariasis rate declined to less than 1% in the ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the efficacy and the mechanism of application of selective head cooling on neuronal morphological damage during postischemic reperfusion in a rabbit model. METHODS:168 New Zealand rabbits were randomized into three groups. Group I [n = 24, (38 +/- 0.5) degrees C, non-ischemic control]; Group II [...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND:Henoch-Schonlein purpura nephritis (HSPN) is a very common secondary kidney disease of childhood. Its pathogenesis and the treatment mechanism of glucocorticoid have not been fully elucidated. The aim of this study was to determine the relationship between p300 and the pathogenesis, glucocorticoid therapy in...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000000380
更新日期:2019-08-20 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:OBJECTIVE:To study the ultrastructural damages of brain tissues dynamically after middle cerebral artery obstruction (MCAO). METHODS:A middle cerebral artery obstruction (MCAO) model was reproduced in renal vascular hypertensive rats (RHR). Brain tissues in different locations were collected for eight times in row, fr...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:Gender is one of the risk factors accounting for the high prevalence of adolescent myopia. Considerable research results have shown that myopia incidence of female is higher than that of male. This study aimed to analyze the correlation between ocular parameters and serum estrogen level and to investigate th...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.151669
更新日期:2015-03-05 00:00:00
abstract:BACKGROUND:Serum creatinine (Scr) measurement plays a key role in glomerular filtration rate estimation (eGFR), chronic kidney disease (CKD) diagnosis as well as CKD treatment. However, the test results of Scr from different laboratories vary significantly. In order to get comparable results, the European in vitro diag...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:The side effects of cyclosporine therapy include thromboembolic complications. However, the mechanisms underlying the hypercoagulable state induced by cyclosporine are not fully understood. Cyclosporine binds to red blood cells (RBCs) with a high affinity in circulation and alters the membranes of RBCs. Ther...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-07-20 00:00:00
abstract:OBJECTIVE:To explore the pathogenesis of glucose metabolic disorder and insulin resistance in critically ill children under severe stress. METHODS:To test glucose, lactate, glucagon, insulin, c-peptide, cortisol levels in 50 critically ill children. While we measured 125I-insulin binding to erythrocytes of 13 critical...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract:OBJECTIVE:To analyze the effect and mechanism of hyperbaric oxygen (HBO) treatment for severe brain injury (SBI). METHODS:Fifty-five patients were divided into a treatment group of 35 patients and a control group of 20 patients. We observed the alterations of clinical, brain electric earth map (BEAM), endothelin (ET) ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2001-04-01 00:00:00
abstract::The environment structure of natural nidi and epidemic areas of hemorrhagic fever with renal syndrome (HFRS) possesses characteristics of topography, hydrology, climate, soil, vegetation, and animals. The natural nidi and epidemic areas of HFRS are distributed mainly in plain and hilly regions under 500 meters above t...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1994-02-01 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 study protective immunity afforded by murine immunization with DNA vaccine of Schistosoma japonicum (S. japonicum) as measured by reduction in worm burden and host antibody, cytokines. METHODS:DNA vaccine pCD-Sj32 was constructed, identified and expressed. pCD-Sj32 could induce substantial protective immu...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1999-08-01 00:00:00
abstract:BACKGROUND:Severe valgus deformity often has bone defect and laxity of the medial ligamentous, and total knee arthroplasty in severe valgus knee is, in most cases, more challenging for surgeons. The usefulness of a computer assisted navigation system in reestablishing the mechanical axis has been well established. Henc...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-10-01 00:00:00
abstract:BACKGROUND:After total hip arthroplasty (THA), there is a noteworthy inflammatory response. The inflammatory response is associated with postoperative recovery and complications. However, there had been few reports on the relationship between inflammatory response and postoperative complication rate. The aim of the pre...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.192772
更新日期:2016-11-05 00:00:00
abstract:BACKGROUND:Interferon-gamma release assay (IGRA) has been used in latent tuberculosis (TB) infection and TB diagnosis, but the results from different high TB-endemic countries are different. The aim of this study was to investigate the value of IGRA in the diagnosis of active pulmonary TB (PTB) in China. METHODS:We co...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:10.4103/0366-6999.223860
更新日期:2018-02-05 00:00:00
abstract:BACKGROUND:Continuous interscalene nerve block (CISB) is considered to be the most effective method for postoperative analgesia after shoulder surgery with prolonged severe pain. This study was performed to evaluate the minimum effective background infusion rate and the effective background infusion rate of ropivacaine...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:Spinal cord injury (SCI) is a worldwide medical concern. This study aimed to elucidate the mechanism underlying the protective effect of hyperbaric oxygen (HBO) against SCI-induced neurologic defects in rats via exploring the stromal cell-derived factor-1 (SDF-1)/CXC chemokine receptor 4 (CXCR4) axis and exp...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.1097/CM9.0000000000000115
更新日期:2019-03-20 00:00:00
abstract:BACKGROUND:Factors of cell-mediated immunity and allergy together play their roles in the pathogenesis of pulmonary tuberculosis (PTB) and its prognosis. The purpose of this study was to investigate the computed tomographic demonstrations of HIV seropositive PTB and the relationship between its pathogenesis and CD4(+) ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-03-01 00:00:00
abstract::Psoralen (PSO) was found cytotoxic against in vitro cultured human mucoepidermoid carcinoma cells of MEC-1 cell line. Its IC50 value was 8.6 micrograms/ml, and relative antitumor activity (RAA) 15. PSO suppressed DNA synthesis, damaged microvilli and cell membrane, and induced degeneration of mitochondria. It inhibite...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1992-11-01 00:00:00
abstract:BACKGROUND:Multiple neonatal characteristics and adult cardiovascular risk factors are associated with the development of atherosclerosis, however little conclusive evidence exists characterizing the relative strength of these factors. In a large retrospective study, we investigated the association between both objecti...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-09-01 00:00:00
abstract:BACKGROUND:The coordinated change of haematopoietic supporting microenvironment in bone marrow (BM) is crucial for innate immunity and inflammation. As the precursors of marrow stroma, BM derived mesenchymal stem cells (MSCs) promote haematopoietic function, but their roles in innate immunity or inflammation have not b...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2007-10-05 00:00:00
abstract:OBJECTIVE:To investigate the role of bax in a vincristine (VCR)-induced multidrug-resistant (MDR) human gastric cancer cell line, SGC7901/VCR, in which the Bax protein expression level was significantly lower compared with that in parent cells. METHODS:A bax eukaryotic expression vector was constructed and transfected...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-11-01 00:00:00
abstract:BACKGROUND:Previous studies demonstrated that vagus nerve stimulation (VNS) is an effective therapy for drug-resistant epilepsy. Acupuncture is also used to treat epilepsy. This study was designed to examine the safety and effectiveness of transcutaneous auricular vagus nerve stimulation (ta-VNS) for patients with drug...
journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND:The endovascular treatment of abdominal aortic aneurysm (AAA) has improved greatly in the last 15 years. The present study aimed to evaluate the endografting experience for the treatment of unfavorable abdominal aortic aneurysm (uAAA). METHODS:During December 2001 and December 2007, 41 patients with uAAA we...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-04-05 00:00:00
abstract:BACKGROUND:Gastric stromal tumors arising from the muscularis propria are located in deeper layers. Endoscopic resection may be contraindicated due to the possibility of perforation. These tumors are therefore usually removed by surgical or laparoscopic procedures. This study evaluated the curative effects, safety and ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.157651
更新日期:2015-06-05 00:00:00
abstract:BACKGROUND:In steroid-induced osteonecrosis, hypertrophy and hyperplasia of marrow fat cells and lipid deposition of osteocytes can be found in the femoral head. However, the precise reason is not clear yet. The aim of this study was to observe the effect of dexamethasone (Dex) on differentiation of marrow stromal cell...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2006-04-05 00:00:00
abstract:BACKGROUND:Patients with atherosclerotic renal artery stenosis (ARAS) are in substantial risk of cardiovascular adverse events. We investigated whether myocardial infarction patients with ARAS are in additional risk of cardiovascular events. METHODS:In this retrospective study, 257 patients with type 1 myocardial infa...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:To get a more comprehensive recognition about carpal tunnel syndrome (CTS), especially the manual housework as its risk factor, and to facilitate early diagnosis and proper treatment. METHODS:262 CTS patients (396 CTS hands) were analyzed retrospectively. A 1:1 matched case-control study of 61 woman pairs i...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00