The future war will inevitably to be in the land,the sea and the sky and so on hyperspace,and electromagnetic environment is very complex.How to eliminate interference of medical equipment under the complex electromagnetic environment,to promote the performance of the medical support,these is austerity and reality questions in current every level of medical and health organization.Only based on the existing,bold practice,independent innovation,the comprehensive medical support exercise under the complicated electromagnetic environment,to master various types of medical equipment in a complex electromagnetic environment of the characteristics and laws in order to give full play to existing health technologies and equipment performance,improve the timeliness of medical support.

AIM: To investigate the effect of high concentration of chlorine gas(Cl 2) exposure on lung haemodynamic and respiratory function in intact and isolated perfused rabbit lungs (IPLs). METHODS: 8 intact and 10 IPLs were exposed to Cl 2 at high concentration(50?10 -4 )for 20 min, as measured group, 8 additional intact and 9 IPLs, which were similarly treated but not exposed to Cl 2, served as controls. The changes of lung weigh of IPL(△W)?pressure of pulmonary artery(Pa)and venous pressure(Pv)?airway pressure and tidal volume(TV) were continuously measured and recorded simultaneously. RESULTS: In IPL group: While the perfusing blood flow was kept constant (133.3 mL/min), and Pv did not change, following the exposure, the Pa increased slightly, then the lung weight were increased significantly and the TV decreased . Hematocrit of perfusate of EIPL and parameters of lung water increased also. In intact group : Pa increased slightly, respiratory rate accelerated immediately, and TV decreased. CONCLUSION:Although mean Pa increased continuously and slightly in both intact and IPL group following the exposure to high concentration of Cl 2, the primary cause of edema was most likely to alter pulmonary capillary permeability. The respiratory rate accelerated and TV decreased due to exposure to Cl 2 enhanced hypoxia of intact rabbits.

Objective To evaluate the efficacy of intermittent pneumatic compression or sequential compression device in prevention of deep venous thrombosis in long-term bedridden patients.Methods We searched Pubmed (1996～),The Cochrane Library (1997～),CLNAHL (1980～),CNKI (1994～),EM-BASE,Science Direct,Oxford Journals,Wanfang Data(1998 ～),and randomized controlled trials (RCTs) in which IPC or SCD was used as an intervention to prevent DVT,and all the trials were published in English or Chinese.The methodological quality of the included studies was assessed according to the standard of Cochrane systematic review.RevMan 5.0 software was used for Meta-analysis.Results Seven RCTs were included.The results of Meta-analysis showed that the incidence of DVT in the IPC or SCD group was lower than that in the control group.Conclusions IPC or SCD shows an effective tendency in DVT prevention,but because of the low quality and the small sample of the included studies,this conclusion needs to be verified by protocols of more samples and higher quality.

Objective To observe the ultrastructural change of intestinal mucosa in mice infected with Blastocystis hominis, and to study the pathogenic mechanism of B.hominis infection. Methods 20 Kunming mice were randomly divided into 4 groups: group A treated with immunosuppressant (dexamethasone), group B without immunosuppressant, group C as normal control and group D as immunosuppressant control. Groups A and B were then orally infected with 204 cysts of B. hominis. Groups C and D were treated as control by infusing same volume of Locke′s solution. Six days after inoculation, mice in each group were killed and mucosa of ileocecum was observed by transmission electron microscope (TEM) and scanning electron microscope (SEM). Results Under SEM, B. hominis located in enteric cavity and on the surface of ileocecum mucosa. Individual parasites also invaded into mucosa and its fold. Partial destruction of microvilli on the mucosa was observed. TEM observation indicated a reduction of microvilli on the surface of absorptive cells. Mitochondrial edema, rough endoplasmic reticulum dilatation and degranulation were found on absorptive cells and goblet cells. Lymphocyte infiltration and eosinophilia were found in intercellular stroma. Pathological changes in group A were more serious than that of group B. No abnormal change on the mucosal ultrastructure was found in groups C and D. Conclusions B. hominis infection causes significant ultrastructural lesion on the ileocecal mucosa in mice. Immune status of the mice can affect the degree of the lesion due to infection.

Objective To investigate the effect of different sex hormones on insulin-stimulated glucose uptake on cultrured 3T3-L1 preadipocytes and adipocytes.Methods We treated cultured 3T3-L1 preadipocytes and adipocytes with different concentrations of 17?-Estradiol or testosterone and the effects were assessed as 2-deoxy glucose uptake.Results After incubation with 17?-Estradiol or testosterone,the ability of insulin-stimulated glucose transport was statistically significantly reduced.Dosage response study demonstrated that(10~(-7) mol/L) testosterone or(10~(-8) mol/L) 17?-Estradiol can induce insulin resistance(P

A 27-year-old woman who suffered from a 2-year history of systemic lupus erythematosus (SLE) presented with a 6-month history of nodules and ulcer on the right lower extremity. Direct microscopic examination of the pus showed branched and septate hyphae and spores in a chain-like arrangement.Histopathological examination revealed yellowish brown hyphae and spores. Dark green velvety colony grew on Sabouraud dextrose agar (SDA). Slide culture showed branched, septate hyphae and spine-like annellated conidiophores. The isolate was identified as Exophiala spinifera by DNA sequence analysis. The strain was unable to liquefy gelatin, could grow at 25 ℃ to 39 ℃, and was sensitive to itraconazole, amphotericin B and terbinafine. Animal test revealed that the infection induced by Exophiala spinifera in immunocompromised mice was more severe than that in normal controls. Based on the clinical features, histopathological, fungal culture and DNA sequencing results, the patient was diagnosed with systemic lupus erythematosus accompanied by subcutaneous phaeohyphomycosis caused by Exophiala spinifera.

AIM: To investigate whether there was nicotinic acetylcholine receptor subunit α 7 (nAChR α 7 ), choline acetyltransferase(ChAT), acetylcholinesterase(AChE) expression and its regulation in mature dendritic cells (DCs). METHODS: Bone marrow(BM) -derived DCs from healthy BALB/c mice were incubated with rmGM -CSF and rmIL-4, and stimulated to mature with LPS. Meanwhile, light microscope and flow cytometry were used to identify DCs, as well as immunocytochemistry, immunofluorescence, flow cytometry and RT - PCR methods were used to dectect expression of nAChR α 7, ChAT and AChE. Flow cytometry was also used to analyze nAChR α 7 expression with mecamylamine (MEC) in 12 h. RESULTS: Both protein and mRNA expression of cholinergic system nAChR α 7, ChAT and AChE were found in mature DCs. Furthermore, nAChR α 7 distributed principally in cell membrane, while ChAT and AChE in cytoplasm. Protein expression of AChE was stronger as compared with ChAT ( P ＜ 0. 05), and there was a trend toward increasing as compared with nAChR α 7. And then, the expression of nAChR α 7 was down regulated by MEC as compared with the group without MEC stimulation(P ＜ 0. 05 ). CONCLUSION: An innate cholinergic system was in mature DCs, which was affected by extrinsic factor ( i. e. , MEC). And it may be involved in anti - inflammation immune adjustion of cholinergic closed - circuit.

Objective To study the relationship of plasma aeylation stimulating protein (ASP) with complement C3, C-reactive protein (CRP) and blood lipid levels in women with polyeystic ovary syndrome (PCOS). Methods Thirty-four patients with PCOS were divided into two groups: obese PCOS group [body mass index (BMI)≥25 kg/m2] and non-obese PCOS group (BMI<25 kg/m2). 41 age-matched non-PCOS women were also divided into two groups: simply obese group (BMI≥25 kg/m2) and non-obese control group (BMI <25kg/m2). Plasma ASP in the 4 groups was detected by enzyme linked immunosorbent assay (ELISA) method.Complement C3 and CRP were determined by immunoturbidimetrie assay. Plasma free fatty acid (FFA)concentration was determined by colorimetric enzymatic assay, plasma triglycerides (TG) by GPO-PAP method and total cholesterol (TC) by COD-PAP method. Results The plasma ASP were significantly increased in the obese PCOS group, the non-obese PCOS group and the obese group as compared with the control group [(36.4±10.9,34.8±9.9, 35.1±14.0, 24.8±7.8) nmol/L, respectively, all P<0.05]. The concentrations of complement C3 were significantly higher in the obese PCOS group and the obese group than that in the control group [(2.2±1.2,2.5±1.5, 1.1±0.7) g/L, respectively, bothP <0.05]. The concentrations of CRP were significantly increased in the obese PCOS group, non-obese PCOS group and obese group as compared with the control group [(32.1±29.2, 30.0±24.8, 23.8±5.5, 7.5±4.8)mg/L, respectively, all P<0.05]. Univariate analysis showed that both plasma ASP and C3 were positively correlated with BMI, CRP, FFA and TG. CRP was positively correlated with BMI, FFA, TG and TC. Conclusion Plasma ASP, C3 and CRP levels in women with PCOS axe increased. They are strongly associated with disturbed lipid metabolism. The lack of association between ASP and complement C3 suggests that the conversion of C3 to ASP may be affected by other factors.

AIM: The purpose of the present study was to examine the effect of insulin and different kinds of free fatty acid (FFA) on glucose transport in cultured 3T3-L1 preadipocytes or adipocytes. METHODS: Following the exposure of preadipocytes to insulin at different concentrations and treated times, glucose transport was assessed as [3H]2-deoxy glucose uptake. Furthermore, 3T3-L1 preadipocytes and adipocytes with either the monounsaturated FFA oleate (C18:1) or the saturated FFA palmitate (C16:0)were used and glucose transport was examined as above. RESULTS: Insulin increased specific membrane glucose transport in 3T3-L1 preadipocytes at the time of 15 min to 1 h stimulation. However, after 6 h exposure to insulin, downregulation of glucose transport was observed. Dose response studies demonstrated that 2-DG transport increased by 336% at 50 nmol/L of insulin (P

Objective To explore the therapeutic effect of combining continuous venovenous hemofiltration (CVVH) with hemoperfusion (HP) on patients with septic shock.Methods A prospective study was conducted. Thirty-two patients with septic shock admitted to Changshu No.1 People's Hospital were enrolled, and they were divided into two groups according to random digits table. The observation group (17 cases) was given HP before CVVH, in the control group (15 cases), only CVVH treatment was carried out, and lasting for 5 days in both groups. The changes of pulse oxygen saturation (SpO2), central venous pressure (CVP), systemic vascular resistance index (SVRI), cardiac index (CI), extra-vascular lung water index (EVLWI) were observed before treatment and 5 days after treatment.Results Compared with those before treatment, the levels of SpO2, CVP, SVRI, CI were obviously elevated, and EVLWI was markedly decreased after treatment in two groups. Compared with those of control group, the degrees of improvement of above indicators in observation group were more prominent [SpO2: 0.966±0.035 vs. 0.939±0.036, CVP (mmHg, 1 mmHg = 0.133 kPa): 8.5±3.2 vs. 8.1±4.2, SVRI (kPa·s·L-1·m-2): 1 497.35±157.08 vs. 1 343.60±144.48, CI (mL·s-1·m-2): 120.36±15.34 vs. 106.69±12.33, EVLWI (mL/kg): 6.84±0.73 vs. 7.65±0.70, allP < 0.05].Conclusion Combing HP with CVVH for treatment of patients with septic shock can improve their prognosis more obviously than using CVVH alone.