Abstract：
OBJECTIVE:The P53 tumor suppressor gene shows the most frequent genetic alteration in human tumors. Mutation, deletion and rearrangement of P53 gene have been found in several types of neoplasm including osteosarcoma. The present study is to clarify the status of abnormalities of this gene in osteosarcoma in China. MATERIALS AND METHODS:Forty-six osteosarcomas were collected from 32 male and 14 female patients aged 20.6 years on average. Eight patients had lung metastasis. Immunohistochemistry, Southern blot and contrast flow cytometry were used for the study. RESULTS:Twenty-seven of 46 (58.7%) osteosarcoma specimens showed strongly positive reaction to the MoAb BP53-12 staining (+2 - +3), which indicated overexpression of P53 protein in osteosarcoma. Contrast study with DNA flow cytometry made on osteosarcoma showed that most of the tumors with strongly positive P53 have higher DNA content than those of negative ones. Alterations of the restriction pattern of the P53 gene were detected in 4 of 20 osteosarcomas in the Hind III group and 3 of 24 in the Eco R I group. Three of them were part or whole deletion of the gene and five of them had extraband which indicated rearrangement of the gene. CONCLUSIONS:The results of this study showed that overexpression of P53 oncoprotein is one of the most frequent genetic changes in osteosarcoma and P53 oncoprotein expression analysis could be a prognostic parameter in osteosarcoma. P53 gene abnormalities play an important role in the development of transformation and proliferation of osteosarcoma cells.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Guo W,Wang X,Feng Csubject
Has Abstractpub_date
1996-10-01 00:00:00pages
752-5issue
10eissn
0366-6999issn
2542-5641journal_volume
109pub_type
杂志文章abstract：:Injections of serotonin (5-HT) into the aortic arch of rats caused greater reductions of blood pressure (BP) and less increases in renal vascular resistance (RVR) than that into jugular veins, in contrast to norepinephrine (NE) which tended to cause larger increases in BP and RVR by the intra-aortic route. Indomethaci...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1989-06-01 00:00:00
abstract：:An ovarian gynandroblastoma was found in a 59-year-old woman. The tumor consisting of mixed Sertoli-Leydig cells and granulosa-theca cells demonstrated no malignant features. Bisexual cells in gynandroblastoma derived from a common gonadal mesenchyme precursor or indifferent cell. The excision of appendages with tumor...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：BACKGROUND:Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a rare but potentially life-threatening congenital heart defect. A retrospective analysis was carried out to elucidate the surgical outcomes of ALCAPA in infants and children using follow-up echocardiography. METHODS:From Sep...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.4103/0366-6999.215334
更新日期：2017-10-05 00:00:00
abstract：BACKGROUND:Allergic rhinitis (AR) is a Th2 dominant cytokine response. Chloride channel-3 (ClC-3) plays an important role in nasal mucosal edema and inflammatory pathologic changes in AR. Antiallergic herbal agents (AHA) are antiallergic herbal products. In the previous study, we have demonstrated that AHA clearly inhi...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2010-04-20 00:00:00
abstract：BACKGROUND:Oxygen inhalation therapy is essential for the treatment of patients with chronic mountain sickness (CMS), but the efficacy of oxygen inhalation for populations at high risk of CMS remains unknown. This research investigated whether oxygen inhalation therapy benefits populations at high risk of CMS. METHODS...
journal_title：Chinese medical journal
pub_type： 杂志文章,随机对照试验
doi：10.4103/0366-6999.182831
更新日期：2016-06-05 00:00:00
abstract：BACKGROUND:Hippophae rhamnoides L. (HL) exerts antioxidant activities against various oxidative stress conditions. In this study, we investigated effects of extract from HL leaves (HLE) on cell proliferation and neuroblast differentiation in the subgranular zone (SGZ) of the dentate gyrus (DG) of aged gerbils. METHODS...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：OBJECTIVE:To explore the management of cerebral ischemia caused by Takayasu's arteritis. METHODS:Ninety-three cases treated from June 1984 to September 1999 at the General Post & Telecom Hospital, the Sir Run Run Shaw Hospital, the First Affiliated Hospital of Zhejiang University, the Second Medical College of Beijing...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
abstract：:The surface structure of four different articular cartilages of the femoral head was studied with scanning electron microscope in 12 cases of hip joint osteoarthritis. These articular cartilages were mink white, yellow, dusky red and hyperplastic and thickened. The osteoarthritic articular cartilage surface was uneven...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：BACKGROUND:Most cardiac regenerative approaches can restore injured heart muscles. In this study, we investigated if fibrin sealant could help neonatal cardiomyocytes restore myocardial function in a rat model of myocardial infarction. METHODS:The left anterior descending artery in adult female Sprague-Dawley (SD) rat...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2007-11-20 00:00:00
abstract：BACKGROUND:One of the major causes of death in severe acute pancreatitis (SAP) is severe infection owing to bacterial translocation. Some clinical studies suggested that ecoimmunonutrition (EIN) as a new strategy had better treatment effect on SAP patients. But the experiment studies on the precise mechanism of the eff...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2006-04-20 00:00:00
abstract：OBJECTIVE:The management strategies after acute myocardial infarction (AMI) have been evolving from simple supportive treatment to various protocols of thrombolytic therapies, and then to mechanical revascularization by balloon angioplasty in recent years. However, controversies still exist between which is the best tr...
journal_title：Chinese medical journal
pub_type： 杂志文章,评审
doi：
更新日期：1997-06-01 00:00:00
abstract：BACKGROUND:Previous studies have suggested that primary degeneration of hair cells causes secondary degeneration of spiral ganglion neurons (SGNs), but the effect of SGN degeneration on hair cells has not been studied. In the adult mouse inner ear ouabain can selectively and permanently induce the degeneration of type ...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：BACKGROUND:The incidence of vancomycin-resistant enterococci (VRE) appeared to be increasing in China, but very few nosocomial outbreaks have been reported. Our hospital had experienced an outbreak of VRE since March 2008 to March 2009. The objective of this study was to analyze the molecular features of the isolates a...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2011-02-01 00:00:00
abstract：BACKGROUND:The reports on massive transfusions (MTs) in obstetrics have recently been an increasing trend. We aimed to define the clinical features, risk factors, main causes, and outcomes of MTs due to severe postpartum hemorrhage (PPH) and the frequency trends over the past 10 years. METHODS:We retrospectively analy...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.4103/0366-6999.200545
更新日期：2017-03-05 00:00:00
abstract：OBJECTIVE:To investigate the short- and long-term clinician and angiographic outcome of stenting or angioplasty for chronic total coronary artery occlusion. METHODS:A total of 95 patients with successful percutaneous transluminal coronary angioplasty (PTCA) for total occlusion coronary artery were identified out of 35...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2000-03-01 00:00:00
abstract：BACKGROUND:We assessed whether the CaNa2 EDTA could improve the accumulation of protoporphyrin IX (PpIX) and photosensitisation in HEp-2 cells as well as the depth of treatment of skin cancers on the topical 5-Aminolaevulinic acid (5-ALA) PDT. METHODS:HEp-2 cells were incubated with 5-ALA (0-1 mmol/L) and CaNa2EDTA (0...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2004-06-01 00:00:00
abstract：BACKGROUND:Increasing prevalence of Staphylococcus aureus (S. aureus), particularly methicillin-resistant S. aureus (MRSA) has been reported in China. In this study, we investigated the drug resistance characteristic, genetic background, and molecular epidemiological characteristic of S. aureus in Changsha. METHODS:Be...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2012-07-01 00:00:00
abstract：BACKGROUND:T8590C polymorphism of CYP4A11 has been associated with hypertension, though with conflicting results. The aim of this study was to quantitatively summarize the evidence for CYP4A11 T8590C polymorphism and hypertension risk. METHODS:Electronic search of PubMed and the Chinese Biomedicine database was conduc...
journal_title：Chinese medical journal
pub_type： 杂志文章,meta分析
doi：
更新日期：2014-01-01 00:00:00
abstract：BACKGROUND:The anterior cruciate ligament (ACL) is one of the most commonly injured knee ligaments. Even following ACL reconstruction, significant articular cartilage degeneration can be observed and most patients suffer from premature osteoarthritis. Articular cartilage degeneration and osteoarthritis development afte...
journal_title：Chinese medical journal
pub_type： 杂志文章,meta分析
doi：
更新日期：2010-11-01 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:Blood glucose control is closely related to type 2 diabetes mellitus (T2DM) prognosis. This multicenter study aimed to investigate blood glucose control among patients with insulin-treated T2DM in North China and explore the application value of combining an elastic network (EN) with a machine-learning algor...
journal_title：Chinese medical journal
pub_type： 杂志文章,多中心研究
doi：10.1097/CM9.0000000000000585
更新日期：2020-01-05 00:00:00
abstract：BACKGROUND:Multifocal lens has become popular in cataract surgery. Short-term outcome after AcrySof ReSTOR Lens implantation had been reported by many studies, but long-term visual performance and the effect of posterior capsular opacification (PCO) on visual performance need further investigation. METHODS:This retros...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2009-11-20 00:00:00
abstract：BACKGROUND:Hospital-acquired pneumonia (HAP) is the most common hospital-acquired infection in China with substantial morbidity and mortality. But no specific risk assessment model has been well validated in patients with HAP. The aim of this study was to investigate the published risk assessment models that could pote...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.1097/CM9.0000000000001252
更新日期：2020-12-03 00:00:00
abstract：BACKGROUND:Hemolysis-elevated liver enzymes-low platelet counts (HELLP) syndrome is a clinical condition occurring in middle and late stage pregnancy. It is characterized by hemolysis, elevated liver enzymes and low platelet counts. This study involves the analysis of the diagnosis, clinical characteristics and treatme...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2010-05-20 00:00:00
abstract：OBJECTIVE:Hypertension is an important risk factor of cardiovascular disease and increases mortality in the elderly. However, the available medical evidences are both inconsistent and insufficient regarding establishing credible and useful blood pressure (BP) targets in the hypertensive elderly. This review summarizes ...
journal_title：Chinese medical journal
pub_type： 杂志文章,评审
doi：10.4103/0366-6999.211885
更新日期：2017-08-20 00:00:00
abstract：BACKGROUND:Patients with temporal lobe epilepsy (TLE) originating from different seizure onset zones had distinct electrophysiological characteristics and surgical outcomes. In this study, we aimed to investigate the relationship between the origin and prognosis of TLE, and the stereoelectroencephalography (SEEG) featu...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.1097/CM9.0000000000001256
更新日期：2020-12-02 00:00:00
abstract：BACKGROUND:Adenomyosis is a gynecological disorder with symptoms most presenting as dysmenorrhea and heavy menstrual bleeding. However, the presence of lower urinary tract symptoms (LUTS) among women with adenomyosis remains unclear. This study was designed to determine the prevalence of LUTS and factors related to the...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.4103/0366-6999.208232
更新日期：2017-07-05 00:00:00
abstract：BACKGROUND:Studies have reported that low bone mineral density (BMD) is prevalent in human immunodeficiency virus (HIV)-infected patients; however, the factors that contribute to HIV-related BMD changes are yet to be fully understood. Due to the application of dual X-ray absorptiometry (DXA) among a select group of hos...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：10.1097/CM9.0000000000001317
更新日期：2020-12-03 00:00:00
abstract：BACKGROUND:Monolayer cell culture models are the traditional culture models used for in vitro research of pancreatic carcinoma chemosensitivity. However, these models neglect the interactions between tumor cells and the impact of the tumor microenvironment. Such tumor cell monolayers poorly mimic the solid tumor microe...
journal_title：Chinese medical journal
pub_type： 杂志文章
doi：
更新日期：2010-07-01 00:00:00
abstract：OBJECTIVE:To review the progress of cardiac differentiation and electrophysiological characteristics of bone marrow mesenchymal stem cells. DATA SOURCES:The databases of PubMed, Springer Link, Science Direct and CNKI were retrieved for papers published from January 2000 to January 2012 with the key words of "bone marr...
journal_title：Chinese medical journal
pub_type： 杂志文章,评审
doi：
更新日期：2012-09-01 00:00:00
