Objective:To explore influence of walking training on pulmonary function and blood glucose in aged pa‐tients with type 2 diabetes mellitus (T2DM) .Methods :A total of 163 T2DM patients treated in our department were selected .According to number table ,they were randomly divided into routine group (n= 80 ,performed DM diet and routine insulin therapy strictly ,and lived as usual) and intensive group (n=83 ,received intensive walking train‐ing based on strict DM diet and routine insulin therapy ,namely walking ≥10000 steps/d for eight weeks) .Pulmona‐ry function and blood glucose indexes were compared between two groups before and after intervention .Results:Compared with before treatment ,after treatment ,there was significant rise in pulmonary function and significant reductions in blood glucose indexes in intensive group , P<0.01 all;compared with routine group after treatment , there were significant rise in vital volume [(2622.0 ± 323.3)ml vs .(2987.0 ± 405.6)ml] ,forced expiratory volume in one second [(2003.0 ± 279.7)ml比(2392.0 ± 323.6)ml]and vital volume/body weight [(44.0 ± 4.2) ml/kg vs . (47.0 ± 4.7) ml/kg] ,and significant reductions in levels of glycosylated hemoglobin A1c [(5.63 ± 2.63)mmol/L vs . (3.82 ± 1.41) mmol/L] ,fasting blood glucose [(7.90 ± 1.41) mmol/L vs .(5.28 ± 1.18) mmol/L]and 2h postpran‐dial blood glucose [(10.48 ± 1.43) mmol/L vs .(8.09 ± 1.68) mmol/L]in intensive group , P<0.01 all .Compared with before treatment ,there were no significant changes in above indexes in routine group after treatment , P>0.05 .Conclusion:As a low intensity aerobic exercise ,walking training can effectively improve pulmonary function , glucose metabolism in aged patients with type 2 diabetes mellitus ,it is help to improve quality of life .

Objective To prepare the recombination protein and polyclonal antibodies against human apolipoprotein A5(ApoA5)and detect the expression of ApoA5 in human tissues with the antibody,then further study the fuction and serum level of ApoA5.Methods With PCR and gene recombinated techniques,the prokaryotic ApoA5 expression vector was constructed.The His-ApoA5 fusion protein was expressed in E.ColiM15,and the fusion protein was injected into New Zealand rabbits to prepare polyclonal antibody.The antibody was tested for their specificity with ELISA and Western-blot,then it was used to detect the tissue distribution of ApoA5.Results It was found that there was a specific brand at 40 ku of the recombination ApoA5(rApoA5);the polyclonal antibody had high immunoreactivity and specificity.ApoA5 was expressed in human sera and hepatic tissue,not in other tissues(heart,vessel,spleen,intestine and lung),regardless of the lipid level.Conclusion The pQE30-ApoA5 is constructed successfully,the rApoA5 can be expressed in E.Coli M15;ApoA5 antibody has highly specifity.It can be used in clinical test.There is ApoA5 in human serum,and ApoA5 is expressed in liver which may be significant in lipid metabolism.

As an important part of the health service security system,military medical equipment has important strategic position in wartime.Under the condition of high technology,the modern warfare has also laid higher requirement to the reliability guarantee of medical equipment.With the modernization development of military equipment,traditional medical equipment maintenance management mode does not meet the requirements of modern military medical equipment and its maintenance.Therefore,based on the reliability guarantee theory,the "Reliability Centered Maintenance(RCM)" management mode for military medical equipment is studied in order to achieve the purpose of improving the equipment reliability and the integrity of combat readiness.

BackgroundWith the number of diabetics increases,people pay more attention to the diabetic keratopathy.The major mechanism leading to diabetic keratopathy is diabetic corneal neuropathy.So it is significant to observe pathologic mechanism of diabetic corneal neuropathy. Objective To investigate the protective effects of edaravone( a free radical scavenger) on corneal nerve of rats with experimental diabetic corneal neuropathy,then explain the effects of oxidative stress in the pathologic mechanism of diabetic corneal neuropathy. Methods Seventy Sprague-Daxley male rats were taken as experimental subjects and 20 of them were used as normal control group.The remaining 50 were induced to be diabetic mellitus by a single intraperitoneal injection of streptozotocin and divided into 2 groups randomly:edaravone treated group and diabetic control group.In the edaravone treated group,edaravone(0.2 g/L) eye drops were used 3 times a day until the animal was killed.Five rats in each group were sacrificed at 6,8,10 and 12 weeks respectively.Then the corneal sensation,number of corneal nerve fibers,morphology,content of malondialdehyde(MDA) and activity of superoxide dismutase(SOD) in the corneal tissue were detected.ResultsIn the diabetic control group,the corneal sensation and the number of corneal nerve fibers were decreased,the density of neural network for cluster was sparse,the nerve activity was decreased,the content of MDA in the corneal tissue was significantly increased,the activity of SOD in the corneal tissue was significantly decreased (P＜0.01 ).Accompany with the course of disease,the above change was obvious day after day.Compared with the diabetic control group,the corneal sensation and the morphological abnormalities in corneal nerve of edaravone group were improved significantly which had the partial branches to the 12th week,the content of MDA in the corneal tissue was significantly decreased,the activity of SOD in the corneal tissue was significantly increased (P＜0.01).Conclusions Edaravone can lower diabetic corneal nerve of rats with experimental diabetic corneal neuropathyinjury,Oxidative stress may be a critical pathologic mechanism of diabetic corneal neuropathy.

Objective To investigate the expression pattern of Th1 and Th2 in patients with pulmonary tuberculosis including sputum positive pulmonary tuberculosis and coinfection with human immunodeficiency viruses(HIV), and its relation to disease severity.Methods The expression pattern of CD4+T lymphocytes, Th1 and Th2 cells in peripheral blood samples from sputum positive pulmonary tuberculosis patients, coinfection with HIV patients and healthy controls were studied by flow cytometry.Results The expression of CD4+ T lymphocytes and Th1 cells in sputum positive pulmonary tuberculosis patients were significantly lower than that in healthy group(31.22?9.80)%,(9.78?3.09)% vs (43.77?10.78)%,(25.26?4.73)%; The expression of Th2 cells in culture positive pulmonary tuberculosis patients was significantly higher than that in healthy group(18.65?3.49)% vs(10.15?2.60)%; The Th2 level in severe pulmonary tuberculosis patients was significantly higher than that in the medium and mild patients(21.70?2.67)% vs (14.87?1.66)% ,(17.48?2.06)%, while the CD4+T lymphocytes and Th1 levels were significantly lower; The CD4+ T lymphocytes and Th2 cells levels in pulmonary tuberculosis patients coinfection with HIV were lower than that in tuberculosis patients without HIV coinfection(21.88?3.71)%,(8.79?2.28)% vs (31.22?9.80)%,(18.65?3.49)%.Compared with the healthy group, Th1 cells level in pulmonary tuberculosis patients with or without coinfection of HIV were lower(25.21?4.73)% vs (9.39?2.65)%,(9.78?3.09)%.Conclusion Patients with sputum positive pulmonary tuberculosis showed lower expression of Th1 and higher expression of Th2,This profile was correlated with disease severity.Patients with pulmonary tuberculosis and HIV coinfection showed both of lower expression of Th1 without enhancement of the type 2 response.

The herpes simplex virus type 1 (HSV-1) infected-cell protein 27 (ICP27) is an essential,highly conserved protein involved in various steps of HSV-1 gene regulation as well as in the shut-off of host gene expression during infection.It functions primarily at the post-transcriptional level in inhibiting precursor mRNA splicing and in promoting nuclear export of viral transcripts.Recently,many novel functions performed by the HSV-1 ICP27 protein were shown,including leptomycin B resistance,inhibition of the type I interferon signaling,regulation of the viral mRNA translation and determining the composition of HSV-1 virions.

Objective To investigate the effect of valsartan,an angiotensinⅡtype 1 receptor (AT1 R)blocker,on radiosensitivity,invasive potential and proliferation activity of nasopharyngeal carcinoma cells(CNE-2)in vitro. Methods Radiosensitization of valsartan on CNE-2 cells in vitro was investigated by colony forming assay.Effect of ATl R blocker combined with radiation on invasive potential of CNE-2 cells was evaluated using 24-well Matrigel invasion chambers(Transwell).Apoptosis-inducing effect of valsartan combined with radiation on apoptosis of CNE-2 was identified by flowcytometry(FCM). Resuits When valsartan was given at 10-9.10-8 and 10-7 mol/L combined with radiation,sensitivity enhancement ratios (SER)were 1.10,1.20 and 1.36.and the invasive inhibition rates were 8.11%,16.49%and 16.77%,respectively.The SER of valsartan on CNE-2 distinctly increased when the exposure time was increased.After 24 h exposure to 10-8 mol/L valsartan combined witIl radiation.the apoptosis rate was 1.89%±0.09%,which was higher than 1.62%±0.06%in radiation alone group(t=4.79.P＜0.05). Conclusions AT1 R blocker valsartan combined with radiation can significantly inhibit the proliferation activity of nasophar,cngeal carcinoma cells in vitro in a dose- and time-dependent manner.Valsartan combined with radiation can potently inhibit the invasive potential of CNE-2.which may be involved in the mechanism of valsartan treatment in vivo.

Objective To investigate the tellurite resistance level,the presence of tellurite resistance (ter) gene cluster and their relationships in non-O157 Shiga toxin-producing Escherichia coli(STEC) isolates.Methods Tellurite resistance level was evaluated by plate dilution method and the ter gene cluster was tested by PCR.Results Only 5 of 39 non-O157 STEC isolates tested in this study were identified to have ter gene cluster,which showed relatively high levels of tellurite resistance ranging from 128 μg/ml to 512 μg/ml.In contrast,the other 34 isolates without ter gene cluster were sensitive to potassium tellurite and showed very low levels of tellurite resistance,the minimal inhibitory concentration (MIC) was ＜1 μg/ml for 29 isolates,8 μg/ml for 2 isolates and 2 μg/ml for 3 isolates.Conclusion Most non-O157 STEC isolates were sensitive to potassium tellurite.It could be concluded that much attention should be paid when screening the non-O157 STEC isolates using the selective medium supplemented with potassium tellurite.

BACKGROUND:Isoflurane cannot only induce a wide range of large neuronal apoptosis, but also inhibit hippocampal neurogenesis in neonatal rats, thereby resulting in hippocampus-dependent learning and memory defects.
OBJECTIVE:To investigate the isoflurane effect on proliferation and differentiation of the hippocampal neural stem cels.
METHODS:Twenty-six Sprague-Dawley rats were randomly divided into air group and isoflurane group (n=13 per group). Rats in the isoflurane group were subjected to 2.5% isoflurane inhalation for 3 minutes folowed by 1.5% isoflurane inhalation for 4 hours. Rats in the air group only breathed in air. After the intervention, blood glucose and arterial blood gas changes were detected in the two groups. Additionaly, rats in the two groups were given intraperitoneal injection of 5-bromodeoxyuridine before and after intervention. At 24 hours after the last injection of 5-bromodeoxyuridine, brain tissues were taken to make frozen sections for immunofluorescence staining.
RESULTS AND CONCLUSION:There were no significant difference in pH, PaO2, PaCO2, HCO3, BE and SaO2 levels between the two groups (P> 0.05). Compared with the air group, the number of BrdU+ cels was significantly less in the isoflurane group (P < 0.05), while the number of NeuroD+/BrdU+ cels was significantly higher in the isoflurane group (P < 0.05). The incidence of adverse reactions was 23% in the isoflurane group, which was significantly higher than that in the air group (7.7%;P < 0.05). These findings indicate that isoflurane can inhibit the proliferation of neural stem cels in the hippocampal dentate gyrus, and promote their differentiation into neurons.

Objective To study the characteristics of mesenchymal stem cells(MSCs)derived from chronic myelogenous leukemia(CML)patients' bone marrow and examine their hematopoiesis support in vitro.Methods MSCs from CML were obtained and cultured.Immunophenotype and in vitro differentiation capacities were investigated.Moreover,the Ph chromosome and bcr/abl gene of CML derived MSCs were detected.The expression of cytokines was detected by RT-PCR,and hema- topoiesis support of MSCs in vitro was detected by long-term bone marrow culture and the methylcel- lulose progenitor assay.Results CML derived MSCs showed a typical fibroblast like morphology. They were positive for CD29,CD44 and CD105,while negative for CD14,CD31,CD45,CD34 and HLA-DR.Under suitable conditions,CML derived MSCs could differentiate into osteoblasts and adi- pocytes.Further,CML derived MSCs showed a normal choromosome,and did not express bcr/abl gene.At last,they expressed hematopoiesis cytokines and possessed ability of hematopoiesis support in vitro.Conclusion There are MSCs with multidirectional differentiation potential in CML bone mar- row and they possess the ability of hematopoiesis support.