Objective To analyze risk factors of nosocomial pneumonias due to ESBL-producing Klebsiella pneumoniae.Methods From July 2001 to December 2004,38 patients with ESBL-producing K. pneumoniae and 63 patients with non-ESBL-producing K. pneumoniae were enrolled. ESBL-producing strains were detected by confirmed test.Results Hospital duration,ICU stay,tracheal intubation or tracheotomy,indwelling catheters,mechanical ventilation and use of cefotaxime were found to be risk factors in the acquisition of K. pneumoniae with ESBLs by univariate analysis. Cefotaxime use remained as risk factors by multivariate analysis with logistic regression. Conclusion The reasonable use of cefotaxime is an important measure to control the prevalence of ESBLs-producing strains of Klebsiella pneumoniae.

Kushenhuangqi Injection is made from Chinese herb medicine flavescent sophora and astragalns roots.Seventy-one patients with malignant pleural effusion were randomly divided into two groups: 36 patients were treated with both intrathoracic Kushenhuangqi Injection and chemotherapeutic agent cisplatin (treatment group) and 35 patients were treated with cisplatin alone.The response rate of treatment group was significantly higher than that of control group (31/36 vs 20/35,u=3.020,P<0.01).The rate of adverse reaction (leucopenia,nausea,vomiting etc.) in treatment group was significantly lower that that of control group.The results indicate that Kushenhuangqi Injection can enhance the therapeutic effect of chemotherapeutic agent and reduce its adverse reaction in treatment 0f malignant pleural effusion caused by carcinoma of the lungs.

Object To report the one arm external fixator with skeletal traction of calcanus in treatment of comminuted fractures of tibia and fibula. Method 186 cases of fractures of tibia and fibula were treated by the one arm external fixator with skeletal traction of calcaneus. 42 cases were open fractures, and 142 cases were closed fractures.185 cases were followed up. Results 183 cases of fracture united, and the average healing time was 6 months. By Johner Wrichs score 113 were rated as excellent, 69 good, 2 poor. The infection rate was 17.5%. Conclusion It is convenient and effective to use one arm external fixator with skeletal traction of calcaneus to treat comminuted tibia and fibula fractures.

Objective To explore the role of intercellular adhesion molecule-1(ICAM-1) in the metastasis of lung cancer.Methods The expression of ICAM-1 in the tissue and the serum ICAM-1(sICAM-1) level in the 52 cases of primary lung cancer were detected with immunohistochemical staining method(SP) and enzyme linked immunosorbent assay(ELISA),with 20 cases of adjacent non-cancerous tissue as the control.Results The positive rate of ICAM-1 expression in lung cancer was significantly higher than that of adjacent non-cancerous tissue.The expression of ICAM-1 in the cases with lymph node metastasis was higher than that of no lymph node metastasis.The expression of ICAM-1 in stage III+IV was higher than that of stage I+II,and that in adenocarcinoma was higher than that of squamous cell carcinoma.The level of sICAM-1 in patients with lymph node metastasis was higher than that without lymph node metastasis.The sICAM-1 level in patients of adenocarcinoma was higher than that of squamous cell carcinoma,and that in patients with positive expression of ICAM-1 in tissue was higher than that of negative expression of ICAM-1.Conclusion The expression of ICAM-1 may be associated with the metastasis in lung cancer.The sICAM-1 level reflects the expression of ICAM-1 in tissue and may be used as a tumor marker of metastasis and prognosis in lung cancer.

AIM: To investigate the effect of hypoxia on the invasion and migration of lung carcinoma cells. METHODS: Lung carcinoma cell H128 was exposed to normoxia (air, 5% CO 2), hypoxia (5% O 2,5% CO 2,90% N 2) or anoxia (95% N 2,5% CO 2) conditions for 48 hours. The migration ability of the cells was assayed by wound healing methods. The invasiveness ability was determined with HABM-HEM model. The cells exposed to hypoxia were inoculated under skin in nude mice, and then the growth of the tumor and the rate of metastasis to lymph node or lung were observed. The expression of E-cadherin and ?1-integrin on the cells were also assayed by flow cytometry. RESULTS: Compared with normoxic group, the invasiveness and migration in hypoxic group were increased. The rates of tumorgenesis and metastasis to lung in anoxic group were evidently decreased. The expression of E-cadherin was decreased, and the expression of ?1-integrin was increased in hypoxic group. In anoxia group, the invasiveness, migration, the expression of E-cadherin and ?1-integrin were all decreased. CONCLUSIONS: Moderate hypoxia down-regulated the expression of E-cadherin, up-regulated the expression of ?1-integrin, and increased the invasiveness and metastasis of carcinoma cells. Serious hypoxia decreased the expression of adhesive molecules, and the proliferation, invasiveness and migration were also decreased.

Objective To evaluate the effects of curcumin on the activity of NR2B and NR1 in the spinal dorsal horn in a rat model of diabetic neuropathic pain (DNP).Methods Diabetes mellitus was induced by high-sucrose and high-fat diet and intraperitoneal streptozotocin 35 mg/kg,then confirmed by fasting blood glucose level ≥ 16.7 mmol/L 3 days later in male Sprague-Dawley rats.DNP was confirmed by the mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) measured on day 14 after streptozotocin administration ＜ 80％ of the baseline value.The rats were then randomly divided into 3 groups (n =27 each) using a random number table:DNP,DNP+ curcumin group (group DCur)and DNP + solvent control group (group DSC).Curcumin 100 mg· kg-1 · d-1 and corn oil 4 ml· kg-1 · d-1 were injected intraperitoneally for 14 consecutive days starting from 14 days after administration of streptozotocin in DCur and DSC groups,respectively.Another 27 normal male Sprague-Dawley rats served as control group (group C) and were fed with normal forage.At 3,7 and 14 days after curcumin injection,MWT and TWL were measured and the lumbar segments (L4-6) of the spinal cord were removed.The expression of pTyr1472-NR2B and pSer896-NR1 in the spinal dorsal horn was determined by immunohistochemistry and Western blot.Results Compared with group C,MWT was significantly decreased,TWL was shortened,and the expression of pTyr1472-NR2B was up-regulated at each time point in group DNP.Compared with group DNP,MWT was significantly increased,and TWL was prolonged at 7 days after curcumin injection,and the expression of pTyr1472-NR2B was down-regulated at 3 days after curcumin injection in group DCur.There was no significant difference in each parameter between DNP and DSC groups,and in the expression of pSer896-NR1 between the four groups.Conclusion The mechanism by which curcumin mitigates neuropathic pain in type 2 diabetic rats may be related to inhibition of up-regulation of pTyr1472-NR2B expression,while unrelated to pSer896-NR1 expression in the spinal dorsal horn.

Objective To determine the nutrients contents in muscle of Culter erythropterus and evaluate its nutritive value. Method The nutrients composition was analysed by general method. Results The contents of moisture, crude protein, total fat, total sugar and ash were 78.29%, 18.31%, 0.97%, 1.18% and 1.17%, respectively. The total amount of AA, EAA, NEAA and FTAA was 71.93%, 31.61%, 40.32% and 25.57%, respectively. 26 kinds of FA were identified. There were 6 kinds of SFA, 20 kinds of UFA. The contents of SFA, MUFA and PUFA were 26.26%, 29.61% and 39.91%, respectively. The contents of DG, TG, FFA, Cho and PL were 3.69%, 11.71%, 23.60%, 0.54% and 60.46%, respectively. Conclusion The crude protein and PUFA were high in muscle of Culter erythropterus. It was beneficial for health to eat it regularly.

Objective To assess hearing and efferent system functions of autistic children.Methods Tests were performed on 30 Autistic children and 15 normal children to evaluate hearing objectively by using otoacoustic emission (OAE) and auditory brainstem response (ABR).The efferent system functions were analyzed through contralateral suppression in OAE.Results The mean ABR Ⅰ-Ⅴ interpeak latencies (IPLs) in children with Autism were significantly reduced than that in the control group.The amplitudes of OAE at 1 kHz and 2 kHz in autistic children were significantly different in two groups.There were no significant differences in contralateral suppressions between the Autistic children and the control.Conclusion Hearing impairment may be more common in children with Autism than in normal children,while for a few Autistic children,their efferent system functions are affected.

Objective To explore the expression of growth associated protein-43(GAP-43)in the inferior colliculus in rats following bilateral cochlear ablation.Methods 35 healthy adult SD rats were randomly divided into 7 groups:3,7,14,21,28,90 days following bilateral cochlear ablation and the sham operation group as the control group.The immunohistochemistry was used to observe the expression of GAP-43 after bilateral cochlear ablation in each group.Results GAP-43 was expressed in each group.The GAP-43 expression in bilateral cochlear ablation group were higher than that in the control group.The expression increased at 3 days,followed by a constant increase at 7 to 14 days with the peak on day 14.On day 21 the GAP-43 expression began to decrease.The mean gray level of GAP-43 in all the staining of groups had statistic significance compared to the control group except the group of day 90.However,in all the 7 groups,the mean gray level between the left and right ears had no statistic significance.Conclusion The change of GAP-43 expression in the inferior colliculus following bilateral cochlear ablation reflects synaptic plasticity in inferior colliculus the neurons.

Objective To investigate the effects of ulinastatin on the expression of NF-κB in lung tissues during limb ischemia-reperfusion(I/R) in rats.Methods Forty-eight male SD rats weighing 230-260 g were randomly divided into 3 groups (n=16 each):sham operation group (group S);I/R group; ulinastatin group (group U).A rat model of lung injury induced by I/R of hind limbs which was produced by occlusion of the bilateral femoral arteries for 2 h followed by reperfusion was established.The rats were sacrificed at 2 and 4 h of reperfusion(8 rats at each time point) and the lung tissues removed for determination of NF-κB expression (by immuno-histochemistry) and microscopic examination.W/D lung weight ratio was calculated.Results W/D lung weight ratio was significantly increased and NF-κB expression was up-regulated in group I/R compared with group S(P＜ 0.05). W/D lung weight ratio was significantly decreased and NF-κB expression was down-regulated in group U compared with group I/R (P＜0.05). The lung injury induced by I/R was reduced in group U compared with group I/R. Conclusion Ulinastatin can reduce the lung injury induced by limb I/R by down-regulating the expression of NF-κB in rat lung tissues.