Abstract:
BACKGROUND:Recent studies have suggested that cancer stem cells cause tumor recurrence based on their resistance to radiotherapy and chemotherapy. Although the highly invasive nature of glioblastoma cells is also implicated in the failure of current therapies, it is not clear whether cancer stem cells are involved in invasiveness. This study aimed to assess invasive ability of glioma stem cells (GSCs) derived from C6 glioma cell line and the distribution patterns of GSCs in Sprague-Dawley (SD) rat brain tumor. METHODS:Serum-free medium culture and magnetic isolation were used to gain purely CD133(+) GSCs. The invasive ability of CD133(+) and CD133(-) C6 cells were determined using matrigel invasion assay. Immunohistochemical staining for stem cell markers and luxol fast blue staining for white matter tracts were performed to show the distribution patterns of GSCs in brain tumor of rats and the relationship among GSCs, vessels, and white matter tracts. The results of matrigel invasion assay were estimated using the Student's t test and the analysis of Western blotting was performed using the one-way analysis of variance (ANOVA) test. RESULTS:CD133(+) GSCs (number: 85.3 ± 4.0) were significantly more invasive in vitro than matched CD133(-) cells (number: 25.9 ± 3.1) (t = 14.5, P < 0.005). GSCs invaded into the brain diffusely and located in perivascular niche of tumor-brain interface or resided within perivascular niche next to white fiber tracts. The polarity of glioma cells containing GSCs was parallel to the white matter tracts. CONCLUSIONS:Our data suggest that CD133(+) GSCs exhibit more aggressive invasion in vitro and GSCs in vivo probably disseminate along the long axis of blood vessels and transit through the white matter tracts. The therapies targeting GSCs invasion combined with traditional glioblastoma multiforme therapeutic paradigms might be a new approach for avoiding malignant glioma recurrence.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Yu SP,Yang XJ,Zhang B,Ming HL,Chen C,Ren BC,Liu ZF,Liu Bsubject
Has Abstractpub_date
2011-09-01 00:00:00pages
2599-604issue
17eissn
0366-6999issn
2542-5641journal_volume
124pub_type
杂志文章abstract:OBJECTIVE:To investigate whether or not estrogen receptor and other sex hormone receptors are present in hemangioma tissues of children. METHODS:Fifty-two specimens of hemangiomas were taken from 52 children. The specimens were doubly stained with hematoxylin-eosin and enzyme-linking affinity immunohistochemistry. The...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1997-05-01 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:BACKGROUND:Aquaporin-1 (AQP1) has involved in fluid transport in diverse pulmonary edema diseases. Our study aimed to explore the dynamic changes of AQP1 in pulmonary water metabolism in rats following traumatic brain injury (TBI) and the protective effect provided by shenmai injection. METHODS:Sixty male Sprague Dawl...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND:Previous studies have different viewpoints about the clinical impact of methicillin resistance on mortality of hospital-acquired bloodstream infection (BSI) patients with Staphylococcus aureus (S. aureus). The objective of this study was to investigate the mortality of hospital-acquired BSI with S. aureus in...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-01-01 00:00:00
abstract:OBJECTIVE:Dermoscopy is a useful technique for improving the diagnostic accuracy of various types of skin disorders. In China, dermoscopy has been widely accepted, and domestic researchers have made tremendous progress in the field of dermoscopy. The main purpose of this review is to summarize the current status of der...
journal_title:Chinese medical journal
pub_type: 杂志文章,评审
doi:10.1097/CM9.0000000000000396
更新日期:2019-09-05 00:00:00
abstract:BACKGROUND:Recurrence of hepatitis B-related hepatocellular carcinoma (HCC) after curative resection is the leading factor influencing the prognosis of the disease. Therefore, further improvement of long-term survival may depend on the prevention and treatment of the recurrent tumor. The aim of this research was to inv...
journal_title:Chinese medical journal
pub_type: 临床试验,杂志文章
doi:
更新日期:2013-03-01 00:00:00
abstract:BACKGROUND:Studies have shown that β-blockers can improve cardiac performance in heart failure (HF) by reversing protein kinase A (PKA)-mediated sarcoplasmic reticulum (SR) Ca2+ leak. However, it is being strongly questioned as to whether the PKA-mediated ryanodine receptor (RyR2) hyper-phosphorylation is a critical re...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Previous studies have demonstrated increased functions of osteoblasts on nanophase materials compared to conventional ceramics or composites. Nanophase materials are unique materials that simulate dimensions of constituent components of bone as they possess particle or grain sizes less than 100 nm. However, ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-01-01 00:00:00
abstract::Total or near-total fertilization failure after intracytoplasmic sperm injection (ICSI) is a rare event, but it occurs repeatedly because of sperm defects in activating oocyte. The case presents a successful pregnancy and live birth after calcium ionophore A23187 (A23187) activation on one-day-old unfertilized oocytes...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND:Hypoxic pulmonary hypertension (HPH) is initiated by inhibition of O2-sensitive, voltage-gated (Kv) channels in pulmonary arterial smooth muscle cells (PASMCs). The mechanism of hypoxic pulmonary hypertension has not yet been fully elucidated. The mitochondrial ATP-sensitive K+ channel (MitoKATP) is extremel...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2005-01-05 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:Intra-articular fractures of the fingers are common problems to emergency physicians and hand surgeons. Inappropriate management of these injuries may result in chronic pain, stiffness, deformity, or post traumatic arthritis. Ideal treatment necessitates the restoration of a stable and congruent joint that w...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2009-11-05 00:00:00
abstract:OBJECTIVE:To discuss the etiology, diagnostic criteria and treatment of Nelson's syndrome. METHODS:Twenty-three patients with Nelson's syndrome who were treated in our department over the last 19 years were analyzed retrospectively. Removal of adenoma by the transsphenoidal approach was done in 21 patients and by tran...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:With the progress of perinatal medicine and neonatal technology, more and more extremely low birth weight (ELBW) survived all over the world. This study was designed to investigate the short-term outcomes of ELBW infants during their Neonatal Intensive Care Unit (NICU) stay in the mainland of China. METHODS...
journal_title:Chinese medical journal
pub_type: 杂志文章,多中心研究
doi:10.4103/0366-6999.167312
更新日期:2015-10-20 00:00:00
abstract:BACKGROUND:Anisodamine is widely used in therapy for treating acute glomerulonephritis and diabetic nephropathy because it can improve renal microcirculation. We performed a study to evaluate the preventive effects of anisodamine against contrast-induced nephropathy (CIN) in type 2 diabetics with renal insufficiency un...
journal_title:Chinese medical journal
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:The Xpert MTB/RIF showed high sensitivity and specificity in previous studies carried out in different epidemiological and geographical settings and patient populations in high-burden tuberculosis (TB) countries. However, there were little data obtained by validation or demonstration study of the assay in Ch...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2014-01-01 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:BACKGROUND:Preoperative incisional local anaesthesia with ropivacaine is a common method of providing post-laparoscopy pain relief. The pulmonary recruitment manoeuvre also provides pain relief, but the combined effect of these two methods on pain following laparoscopic procedures has not been reported. We investigated...
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::The persistence of anti-HBs was investigated in 95 juveniles who received plasma-derived HBV vaccine (vaccine group) and 63 counterparts who got anti-HBs from natural HBV infection (infection group) for a period of five years. The positive rates of anti-HBs from the first to fifth year in the vaccine group are 97.89%,...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1993-02-01 00:00:00
abstract:OBJECTIVES:To examine whether the expression of choline acetyltransferase (ChAT), a marker for cholinergic neurons, and growth-associated protein (GAP-43), a marker for synaptogenesis, occurs differently following compression vs. decompression of spinal cord, and whether the reactions have any relationship with the tim...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2000-08-01 00:00:00
abstract:BACKGROUND:Optical coherence tomography (OCT) is a high resolution noncontact imaging modality which can quantitatively detect the optic disc and retinal structure. This study was designed to evaluate the diagnostic capability of parameters of the optic disc, retinal nerve fiber layer thickness, and ganglion cell compl...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-08-05 00:00:00
abstract:Background:Betel quid chewing has been a major risk factor for oral cancer (OC) in southern China. This study aimed to analyze the scientific publications on the relationship between betel quid chewing and OC and construct a model to quantitatively and qualitatively evaluate pertinent publications from 1998 to 2017. M...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.4103/0366-6999.238140
更新日期:2018-08-20 00:00:00
abstract:BACKGROUND:With the development of magnetic resonance (MR) technologies, whole-body 3D contrast-enhanced MR angiography (3D CE MRA) has become possible. The purpose of this study was to introduce and evaluate this technique in demonstration of various systemic arterial diseases. METHODS:Thirty-seven patients underwent...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2006-11-05 00:00:00
abstract::The CRIEPI initiated the Radiation Hormesis Research based on the following rationale. If the Luckey's claim was true, our daily activities in the radiation management would be extremely erroneous. If the Luckey's claim was false, the concept publicated would bring us serious disturbance on the radiation management in...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1994-06-01 00:00:00
abstract::Patients whose routine MRI were negative but were clinically highly suspected of having intra-cranial or intra-spinal canal space-occupying lesions, and those whose routine MRI were positive but presented difficulties in defining the contour or the nature of the lesion, or difficulty in distinguishing the lesion from ...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
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:The gradually increasing changes in a human hyperlipidemic diet along with chronic stress might play an important role in the increased numbers of fatty liver. This study investigated the effects of Ilex asprella root decoction on related genes of lipid metabolism in chronic stress in hyperlipidemic fatty li...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Previous studies demonstrated general anesthetics affect potassium ion channels, which may be one of the mechanisms of general anesthesia. Because the effect of etomidate on potassium channels in rat hippocampus which is involved in memory function has not been studied, we investigated the effects of etomida...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2010-03-20 00:00:00
abstract:OBJECTIVE:To investigate the mechanism of multidrug resistance (MDR) in a human glioma cell and methods for overcoming multi-drug resistance. METHODS:MDR cell line C(6)/adr was established. The expression of the mdr-1 gene and its P-glycoprotein (P-gp) in the C(6)/adr cell line was observed by RT-PCR and flow cytometr...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:10.3901/jme.2002.supp.238
更新日期:2002-02-01 00:00:00
abstract:BACKGROUND:In patients with chronic total occlusion (CTO) and multivessel coronary artery disease, the comparison of surgical and the percutaneous revascularization strategies has rarely been conducted. The aim of this study was to compare long term clinical outcomes of drug eluting stent (DES) implantation with corona...
journal_title:Chinese medical journal
pub_type: 杂志文章
doi:
更新日期:2011-04-01 00:00:00