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.

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.

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

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

Benzene ; poisoning ; DNA Damage ; DNA Repair ; genetics ; Deoxyguanosine ; analogs & derivatives ; genetics ; Humans ; Mutagens ; poisoning ; Poisoning ; genetics

This study investigated the conjoined cellular oxidative damage of human embryo kidney 293T (HEK293T) cells induced by cadmium chloride (CdCl(2)) and nanometer titanium dioxide (nano-TiO(2)). RT-PCR technique was used to detect the expressions of Heme oxygenase-1 (HO-1) and 8-oxoguanine DNA glycosylase (OGG1). The activities of superoxide dismutase (SOD) and catalase enzyme (CAT) and concentrations of reactive oxygen species (ROS) and maldondialdehyde (MDA) were measured by different approaches. The results showed that CdCl(2) and nano-TiO(2) at a low concentration of 0.75 total toxic unit (TU) exerted an additive effects on HO-1 gene expression, CAT activities and MDA concentrations. When the total TU was increased to 1 or 1.25 TU, the interaction was synergetic. Moreover, the mixture with high proportion of CdCl(2) produced an additive effect on the OGG1 gene expression, and the interaction was changed to be synergetic when the concentration of CdCl(2) was lower than or equal to that of nano-TiO(2). Synergetic effects of CdCl(2) and nano-TiO(2) on cellular oxidative damage of HEK293T cells were found as indicated by the changes in the SOD activities and ROS concentrations. It was concluded that CdCl(2) and nano-TiO(2) exerts synergistic effects on the cellular oxidative damage of HEK293T cells, and the sensitivity of these indicators of oxidative damage varies with the proportion of CdCl(2) and nano-TiO(2) in the mixture.

The immunoregulatory effect of TLSF_(JM) on the levels of IP3,Ca~(2+) in activated T cells andthe expression of Fos protein was investigated by ABC immunohistochemistry technique and Fu-ra-2/AM labelled T cells and anion-exchange chromatography techniques in this paper.The re-sults showed that TLSF_(JM) can the same time,it can strongly inhibit the levels of IP3、Ca~(2+) in ac-tivated T cells.

Objective To study the correlation between vascular endothelial growth factor(VEGF) and cyclooxygenase-2 (COX-2) in clear renal cell carcinoma (CRCC).Methods In 60 cases of CRCC and 10 cases of normal renal tissue,immunohistochemistry was used to examine the expression of COX-2 and VEGF.Results The positive expression rate of COX-2 in CRCC (76.7％) was significantly higher than that in normal renal tissue (20％) (x2 =10.28,P ＜0.01).The positive expression rate of VEGF in CRCC(73.3％) was significantly higher than that in normal renal tissue (20％) (x2 =8.58,P ＜0.01).The expressions of COX-2 and VEGF in CRCC were correlated with each other (r =0.469,P ＜0.01).Conclusions The expressions of COX-2 and VEGF were involved in the pathophysiolical processes of clear renal cell carcinoma.The expression levels of COX-2 and VEGF might be used to evaluate the development of clear renal cell carcinoma.

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.