Objective To study the characteristics of cerebral glucose metabolism in adults with hypoxic-ischemic encephalopathy (HIE) using positron emission tomography (PET) and statistical parameter mapping (SPM), and evaluate the degree of the cerebral glucose metabolism damaged. Methods 26 HIE patients and 20 healthy controls received 18F-FDG PET imaging. The scope and degree of the brain radioactivity decrease were observed with visual analysis. The three-dimensional projection images and the KE value were obtained by SPM analysis. Results The glucose metabolic decrease in HIE was primarily bilaterally. The bilateral basal ganglia and thalamus metabolism decreased most obviously. The brain cortical lobes varied degrees of metabolic decrease according to the order from high to low was the frontal, occipital, parietal and temporal lobes. The basal ganglia and thalamus were taken as the important target area of the evaluation of damage degree, the degree of damage of HIE was divided into Level Ⅰ(mild), Level Ⅱ(moderate) and Level Ⅲ (severe) combined with cortex damage. Conclusion The basal ganglia and thalamus are the target areas of metabolic damage, the classification combined with brain cortex damage degree and scope can be used to guide the clinical treatment and prognosis evaluation.

Objective To evaluate the therapeutic effect of limb ischemic preconditioning (LIPC) by observing the changes of brain glucose metabolism using positron emission tomography (PET) and statistical parametric mapping (SPM). Methods 40 patients with severe stenotic or occlusion cerebral artery lesions were enrolled and randomized into LIPC group (n=20) and control group (n=20). Brain lesions and cerebral hemorrhagic lesions were excluded after magnetic resonance imaging. The glucose metabolism of patients was analyzed before and after treatment in two groups, respectively, using the methods of radioactivity ratio and SPM. Results There were 5 patients drop-out in the control group. Comparison of the glucose metabolism ratio of the impaired area to the opposite area: LIPC group improved better than the control group (P<0.01) while the control group aggravated heavier than LIPC group (P<0.05). Comparing the glucose metabolism of patients before and after treatment in two groups, respectively, by paired-t test, 1) Setting the glucose metabolism of patients increased after therapy: There were 9 areas activated in LIPC group, including frontal, parietal, temporal, occipital lobes, basal ganglia and thalamus, and the KE=927, while there were only 3 areas activated in the control group, including frontal, parietal and occipital lobes, and the KE=289. 2)Setting the glucose metabolism of patients decreased after therapy: There was no area activated in LIPC group, while there were 2 areas activated in the control group, including parietal and temporal lobes, and the KE=115. Conclusion The improvement of glucose metabolism was observed in cerebral cortex, basal ganglia and thalamus of the patients with severe stenotic or occlusion cerebral artery lesions after LIPC by PET and SPM.

Objective To screen serum biomarkers in patients with acute leukemia.Methods Proteomic spectra were generated by mass spectrometry in 158,including 44 acute lymphocyte leukemia patients and 36 acute myeloid leukemia,78 healthy control.158 spectra obtained were used to train and to develop a decision tree classification algorithm.Results A total of 7 distinguished proteomic peaks were detected in acute lymphocyte leukemia and were used to build a proteomic pattern.The results yielded a sensitivity of 88.6%(39/44)、specificity of 82.9%(29/35);A total of 8 distinguished proteomic peaks were detected in acute myeloid leukemia,7 peaks were used to build a proteomic pattern.The results yielded a sensitivity of 86.1%(31/36)、specificity of 95.3%(41/43).Conclusion SELDI-TOF-MS offers a unique platform for the proteomic detection of acute leukemia.It also offers a noninvasive method to further study the proteomic changs in the development and progression of leukemia.

AIM: To observe the efficacy of Huangdanyishen Capsule (HDC)(Radix Astragali, Radix Salviae Miltiorr hizae) on renal lesions in diabetic nephropathy(DN) rat induced by Streptozocin(STZ). METHODS: The murine model with DN induced by STZ was made from Wistar rats with insulin resistance after being fed with feedingstuff of hypersugar, hyperlipid, hypercholesterol. These rats were randomly divided into five groups, and all rats were successively administrated corresponding drugs for 10 weeks. The general state and blood sugar were observed during the period. Serum urea nitrogen and creatinine content, the excretory rate of urinary micro-protein and renal pathological features were determined after 10 weeks. RESULTS: HDC could obviously ameliorate psychic status and renal function of rats with diabetes mellitus Ⅱ, and increase DN rats' weight. HDC could reduce the content of DN rats' serum urea. nitrogen and creatinine and urinary micro-protein. The ultramicropathologic histopathologic results indicated that the glomerular basement membrane thickening, synapse displaying foul-up and amalgamation, and mitochondrial swelling were alleviated to a certain extent in HDC groups. The content of murine blood sugar in HDC groups was significantly lower than those in model group. CONCLUSION: HDC has an obvious effect on Ⅱ DN treatment and decrease the content of blood sugar at the same time.

AIM: To investigate the protective effects of the total paeony glycoside(TPG) on the focal cerebral ischemia and regional cerebral blood flow(rCBF) in rats. METHOD: The rat model of focal cerebral ischemia was made by middle cerebral artery occlusion(MCAO) with nylon suture.TPG was injected into every group rats once a day before 48 h,and injected before MCAO 30 min and after 4 h,12 h.After 24 h the effects of the drug were studied about neurological deficit,the water content of brain tissue,the cerebral infarcted zone,under microscopic examination,as well as rCBF on each rat with laser Doppler fiowmeter(LDF). RESULTS: The sympton of brain ischemia was obvious in model rats by contrast to the sham rats,and the model rats rCBF decreased markedly after MCAO.50 mg/kg and 100 mg/kg TPG injection could obviously promote neurological deficit,decrease the water content of brain tissue and the cerebral infarcted zone.And the pathological slices also proved its protective effect on neuron.The laser Doppler flowmeter detected result indicated that 100 mg/kg TPG inject could greatly increase MCAO rats rCBF. CONCLUSIONS: TPG injection has a marked prospective activity on rat focal brain ischemia in rats,and the increase of rCBF may be one of the protection mechanism.

Objective To study the changes of cardiac structure,heart function and pulmonary arterial pressure of the Han Chinese back to the plain after living long time on Tibetan Plateau. Methods Randomly choose 67 cases out of the Han people who have moved to the Tibetan Plateau many years , and been examined to make sure they have no disease caused by other factors. Examine their cardiac structure, heart function, pulmonary arterial pressure and valve flow velocity in Tibetan Plateau and about 60 days later back in plains respectively. Then make statistical analysis of high altitude cardiopulmonary adaptation and de-adaptation reaction according to the differences. Results Only were the values of pulmonary artery systolic pressure (PASP) and tricuspid regurgitation (TR) from the group back to plains lower than those from the group migrated to plateau (P = 0.045; P = 0.041). Other indicators of cardiac structure, heart function, pulmonary arterial pressure and valve flow velocity did not change significantly between the group back to plains and the group migrated to plateau (P > 0.05). Conclusions To Han people who returned to plains about 60 days later after long time staying on plateau , only the values of PASP and TR significantly reduce , which have not recovered to normal levels. This may be correlated with the ageing factor and long time migrating.

Objective To investigate the influence of CO2-insufflation pressure on invasion potential of the colon cancer cells.Methods With an in vitro artificial pneumoperitoneum model,SW1116 human colon cancer cells were exposed to CO2-insufflation of 5 different pressure groups:6,9,12,15 mm Hg and control group,respectively for 1 h.The invasion capacities of SW1116 cells exposed to CO2-insufflation of 5 different pressure groups were detected by cell adhesion/invasion assay in vitro.Results Immediately following exposure to 15 mm Hg CO2 insufflation,the invasion of SW1116 cells decreased significantly compared to the cells before exposure.At the 0 h time point,the cells exposed to 15 mm Hg were significantly less invasive than those exposed to the other insufflation pressure(P

AIM: To investigate the effects of angiotensin converting enzyme inhibitor (ACEI), benazepril(B), on cardiac function, free oxygen radicals, sarcoplasmic reticulum(SR) Ca~(2+)-ATPase following ischemia-reper-fusion in sportaneously hypertensive rats (SHRs). METHODS: Thirty 10-week-old female SHRs were randomly assigned into two groups: group SHR was control; The animal in group SHR+B was given with 10 mg/kg of benazepril perday. Another 15 Wistar rats with the same age and sex were normal control (group Wistar). After 12 weeks of pretreatment, all rats in each group were subjected to 30 min of left anterior descending coronary artery occlusion and 30 min of reperfusion. Hemodynamic parameters, left heart-to-body weight ratio(LVW/BW), myocardial malondialdehyde (MDA) concentration, superoxide dismutase (SOD) activity, and SR Ca~(2+)-ATPase activity were measured. RESULTS: Compared to group Wistar, the rats in group SHR had higher blood pressure, LVW/BW and myocardial MDA concentration, more serious left cardiac function injury and lower myocardial SOD activity and SR Ca~(2+)-ATPase activity; group SHR+B had lower myocardial MDA concentration, higher myocardial SOD activity, but no difference in blood pressure, LVW/BW, the degree of left cardiac function injury and myocardial SR Ca~(2+)-ATPase activity. CONCLUSION: Benazepril can attenuate ischemia-reperfusion-induced cardiac function injury by regression of left ventricular hypertrophy (LVH), improving SR Ca~(2+)-ATPase activity and decreasing oxygen free radicals injury in SHRs.

AIM: To investigate the effect of angiotensinⅡon Cx43 gap junction in cultured neonatal rat cardiac myocytes and its mechanism. METHODS: The cardiomyocytes were treated with AngⅡ for 24 h, which were pretreated with valsartan or PD98059 for 60 min before AngⅡ treatment. The controls were treated with equal amount of DMSO. The Cx43 expression, synthesis and gap junction in cardiomyocytes were characterized by Western blotting, metabolic labeling and immunoprecipitation assay, and electron microscope. RESULTS: Western blotting analysis revealed that Cx43 content concentration-dependently increased in cells treated with 10 -9-10 -6 mol/L AngⅡfor 24 h. Phosphorylated extracellular signal regulated kinase (P-ERK) 1/2 activity increased in cells treated with 0.1 ?mol/L AngⅡ for 24 h (P

Objective To observe the expression of AdipoQ in Sj?gren's syndrome (SS) mice and its role in inflammation was investigated by recombinant gene transfection study in vivo. Methods As spon-taneous SS mice model, a total of 30 NOD mice were divided into 3 groups randomly: recombinant adenovirus (rADV-AdipoQ) group, normal saline control and simple adenoviruses (control group). The submandibular gland morphology, histopathological grading and the level of serum tumor necrosis factor-α (TNF-α), AdipoQ was compared between the three groups. The expression of AdipoQ on mice submandibular gland was assessed by means of semi-quantitative reverse transcriptase polymerase chain reaction. Results The submandibular glands of the mice of the control group were destructed, with focal lymphocytic infiltration and acinus atrophy. Compared with control model groups, the serum TNF-α and salivary gland AdipoQ expression was significantly down-regulated in the rADV-AdipoQ group [(248 ±30) vs (162 ±73) ng/ml] (P<0.05). Conclusion AdipoQ gene transfected SS mice can significantly improve the morphological features of tissues and decrease the concentration of TNF-αin serum, in addition, it can effectively inhibit inflammation, decrease the degree of protein and AdipoQgene expression. So the AdipoQ may be the protective gene in SS mice.