Brain tumor stem cells (BTSCs) play a key role in tumorigenesis and tumor development.There are a group of special markers in the surface of brain tumor stem cells,which can sorts stem cells,precursor cells and cancer stem cells.In recent years,the studies of CD133,Nestin,high-mobility group A1,A2B5 have made some breakthroughs.

Complications that follow ischemic stroke are common,frequency ranging from 28% to 95%.It may either directly lead to death or prevent optimal recovery.54% of deaths after ischemic stroke are attributed to medical complications.Most complications occur during the first week,and stroke severity is the most important risk factor.The common serious medical complications are chest or urinary tract infection,deep venous thrombosis,pulmonary embolism,cardiac events,gastrointestinal bleeding,hyperglycemia,pressure sores.Falls,shoulder pain and depression are also common complications.Most of medical complications are preventable or treatable to some extent if recognized,so preventive strategies and appropriate treatment should be employed as early as possible.Prevention,early recognition,and management complications could improve short-term and long-term prognoses after ischemic stroke.

The principle and structure of the near-IR laser spectrum noninvasive blood glucose detection system are introduced in the paper. To meet the detection demand of the little DC current signal in the system,the current measure methods are analyzed. The hardware and software structure are discussed in the end.

Humans ; Hypoxia-Ischemia, Brain ; diagnosis ; therapy ; Infant, Newborn ; Time Factors

Asian Continental Ancestry Group ; Databases as Topic ; Humans ; Injury Severity Score ; Maxillofacial Injuries

Objective To determine whether re-expansion of the collapsed lung with room air can attenuate oxidative stress injury following one-lung ventilation during esophageal cancer resection. Methods Twenty-four ASA Ⅰ or Ⅱ patients aged 40-60 yr weighing 44-65 kg undergoing esophageal cancer resection were randomly divided into 2 groups (n=12 each) : room air group and pure oxygen group. Anesthesia was induced with midazolam, fentanyl, etomidate and atracurium and maintained with propofol and atracurium infusion and intermittent iv boluses of fentanyl. Right or left side double-lumen catheter (Fr 35, 37, 39) was inserted in each patient. Correct placement was verified by fiber-optic bronchoscopy. The patients were mechanically ventilated ( V_T 7-10 ml/kg, RR 12-16 bpm, FiO_2 1.0 during one-lung ventilation). P_(ET)CO_2 was maintained at 35-45 mm Hg. SpO_2 was maintained at 95%-100% during one-lung ventilation. Blood samples were collected at the beginning of one-lung ventilation (T_1 ), immediately before re-expansion of the collapsed lung (T_2) and 30 rain after re-expansion of the collapsed lung (T_3) for determination of serum levels of MDA, SOD and plasma level of protein carbonyl. Arterial blood samples were obtained at 2 h after operation for blood gas analysis. Results The plasma protein carbonyl level and serum MDA level were significantly increased while the serum SOD level was significantly decreased at T_3 as compared with thost at T_1 and T_2 in pure oxygen group. No significant change in serum levels of MDA, SOD and plasma level of protein carbonyl occurred during operation in room air group. The oxygenation index was significantly higher at 2 h after operation in room air group than in pure oxygen group. Conclusion Re-expansion of the collapsed lung with room air can attenuate the oxidative stress injury following one-lung ventilation during esophageal cancer resection.

Objective:To analyze the lymphocyte activation from patients with different activities of multiple sclerosis (MS) and its clinical signifiance. Methods: The positive percentage of CD69 and HLA-DR were determined on peripheral blood (PB) or cerebrospinal fluid (CSF) lymphocytes by flow cytometry from 28 patients with relapsing-remitting MS (relapses n - 20, remission n = 8) , 12 patients with relapse MS and 11 patients with relapse MS after glucocorticoid treatment. ResultS:The percentage of HLA-DR+ and CD3+ /HLA-DR+ on PB lymphocytes in relapses MS group were higher than in remission MS group and controls. The percentage of CD3+ /HLA-DR+ on PB lymphocytes in remission MS group were higher than in controls. The percentage of CD69+ , HLA-DR+ and CD3+ /HLA-DR+ were higher in CSF than in PB of patients with relapse MS. There was no significant correlation between the levels of CD69+ , HLA-DR+ , CDS+ /HLA-DR+ and the time of onset of clinical relapse, duration, clinical disability scale score(EDSS) . In patients with relapse MS, there was significant positive correlation between CD69+ expression on CSF lymphocytes and blood brain barrier damage, intravenous glucocorticoid treatment caused a significant changes in the positive percentage of HLA-DR on PB lymphocytes. Conclusion:The findings support that lymphocyte activation involvement of MS pathogenesis. Lymphocyte activation may be as a marker of disease activity in MS.

Objective To observe the change of neuron-specific enolase (NSE) an d glial fibrillary acidic protein (GFAP) in neonatal rats' cerebral cortex with hypoxic-ischemic brain damage (HIBD). Methods The 7 day- old SD rats were subjected to the ligation of right carotid artery, then were pu t into a hypoxic box to establish a HIBD model. The immunohistochemical method w as used to detect the expression of NSE and GFAP in rats' cerebral cortex. Results ① The NSE decreased in damaged cerebral cortex in HIBD 24 h group, after 7 days it gradually increased but was still lower than that of the controls. ② The expression of GFAP was limited and scarce in control and it did not change in HIBD 24 h group, while in HIBD 7 d group GFAP expression was increased and spread widely in the damaged cerebral cortex. Conclu sion ① The NSE decreases in damaged cerebral cortex in early stage of neonatal rat HIBD, suggesting that NSE is a specific marker for neuron damage . ② The GFAP increases in damaged cerebral cortex in the recovery stage of neon atal rat HIBD, suggesting that GFAP participates the repair of lesion region.

Objective:In 2003,a survey of the manpower of pediatric dentists was made in China in order to provide basis for database. Methods:Questionnaires were distributed to dentists presenced the 5th conference of pediatric dentistry in China,and 139 available answers were analysis. Results:In those 139 pediatric dentists, with a mean age of 38.2?8.7,females were significantly more than males, and 89.9% dentists had bachelor, master or doctor degree. Significant relations were found between self-estimate ability of dentists and their length of work, degree, character of clinic.Conclusion:To date, the team of pediatric dentists begins to take shape, the structure of age and education are rational, but the number of them is insufficient and it is necessary to improve the basic and continuing education.

Objective To investigate the value of magnetic resonance (MR) imaging for diagnosing typeⅠ congenital choledochocele and its complications. Methods The MR imaging data of 13 cases with proved typeⅠ congenital choledochocele associated with complications were retrospectively reviewed and compared with operative findings. MR imaging sequences included axial T2W and T1W plain scan, true-FISP coronal images, 2D-MRCP, and Gd-enhanced T1W images. Results All patients had cystic dilatation of the common bile ducts to various degrees. In 6 patients complicated with stone and infection, the bile duct showed uniform wall thickening with marked enhancement, and calculus were depicted within the duct lumen with dilatation of the proximal biliary duct. In 7 cases complicated with carcinoma of biliary duct, a polypoid soft tissue mass or nodule was seen inside the ductal lumen in 3 cases, or the duct wall was irregularly thickened in 4 patients. Six cases received curative operation, but one patient with extensive local infiltration, vascular encasement and lymphadenopathy had only palliative treatment. MR imaging observations were verified by surgery findings in all 13 patients. Conclusion MR imaging is very valuable not only in diagnosing typeⅠ congenital choledochocele, but also in revealing its complications.