Objective To isolate and identify the Sertoli′ cells, and the expression of FasL was examined immunohistochemically. Methods Testis were isolated from male Wistar rats and Sertoli′ cells were isolated. After culturing for 72 hours, Sertoli′ cells were morphologically observed by several ways and identified with transmission electron microscope. FasL was examined immunohistochemically. Results The yielded Sertoli′ cells accounted for over 90% of all the cells harvested. FasL was expressed in high level in the 72h cultured Sertoli′ cells. Conclusion Sertoli′ cells that we have isolated can be used for co-transplantation with other cells and offer immune privilege.

Objective To compare the different expression patterns of survivin and caspase-3 between the larger part and the smaller part of the dissymmetric enlarged prostates in BPH patients, and to clarify the role of apoptosis in BPH etiology. Methods BPH tissues from 25 patients were embedded in paraffin. The specimens constituted of two prostate parts from each patient. One part was from the larger enlarged gland and the other was from the smaller enlarged counterpart. 50 paraf-fin blocks were cut into sections and stained with survivin and caspase-3 polyclonal antibodies against human. All the data was analyzed by SPSS13.0 software. Results Survivin immunoreactivity was localized in prostatic cell nuclei. Survivin expression in larger enlarged parts (22.08±16. 33)0% was significantly higher than the smaller parts (7. 645±5. 45)%(P<0.01). Positive nuclear or cytoplasm staining was also observed in the Caspase-3 immunoreactivity. Caspase-3 expression was higher in smaller enlarged parts (51. 525±27. 27%) than in larger enlarged parts (33. 125±21.01%) (P< 0.01). Survivin expression in larger part of the enlarged prostates was inversely correlated with caspase-3 expression (r=-0. 474, P<0. 05). However, in smaller part of the enlarged prostates, the expression of the two factors had no relation (r=-0. 313,P>0. 05). Conclusions Survivin and caspase-3 expression patterns are different in the two parts of the dissymmetric enlarged prostates. These different patterns indicate apoptosis playing an important role in BPH development.

To explore the effect of heat acclimatization to the content of SOD and MDA in dogs with gunshot wound in limbs in hot and humid environment, eighteen Chinese mongrels were divided into 3 groups randomly according to the given environment: heat acclimatization(HA) group, normal environment(NE)group, and hot and humid environment(HHE) group. The contents of superoxide dismutast(SOD) and malonaldehyde(MDA) in muscle tissues of the gunshot wound track were assayed at 0, 1, 3, 4, 6, 8, 10, 14, 18 an 24h respectively after wounding. The results showed that the contents of MDA in both HA and HHE groups began to ascend on postinjury hour(PIH) 1, peaking at PIH10 in HA group and PIH6 in HHE group, with the former lower than the latter. There was no significant difference between the contents of MDA in the three groups at PIH18. The content of SOD in HA group began to rise immediately after injury, which was 1h earlier than that in the other two groups, and it was higher than that in HHE group after PIH4. The content of SOD was too low to be measured at PIH10 in HHE group, and this result was 4h earlier than that in the other two groups. In conclusion, SOD and MDA play an important role in the pathophysiological process of gunshot wound in hot and humid environment. Heat acclimatization can be favorable to mitigate pathophysiological changes, and it might be an effective method to prevent rapid deterioration of gunshot injuries in hot and humid environment.

Objective To investigate infection pathogens and drug resistance of patients in the department of geriatrics ,so as to guide the rational use of antibacterial agents .Methods Retrospectively analysed data on clinical specimens of 1 563 cases of elderly patients from 2014 to 2013 .Results A total of 591 non‐repeated strains was isolated and the positive rate was 37 .8% .Strains mostly were isolated from sputum specimens (299 strains ,accounted for 50 .6% ) ,followed by urine specimens(171 strains ,accoun‐ted for 28 .9% ) ,secretion specimens(75 strains ,accounted for 12 .7% ) and blood specimens(15 strains ,accounted for 2 .5% ) .The isolated pathogenic bacteria mainly were gram‐negative bacteria(72 .60% ) ,which mostly were Pseudomonas aeruginosa .Acineto‐bacter baumannii ,Escherichia coli and Staphylococcus aureus has relatively high resistance rates against most of antibacterial agent . A total of 54 strains of multi‐drug resistant bacteria were isolated ,which was accounted for 56 .3% .Conclusion The pathogenic bacteria in the elderly patients mainly are gram‐negative bacteria ,pathogens have high resistance rates to antimicrobial agents ,and the multi‐drug resistance is serious ,so it is necessary to use antibacterial agents rationally based on the results of drug susceptibility tests .

Objective To explore the association between air pollution and the pregnancy outcome in a severe air pollution city and to provide the evidence for health related policy-making.Methods The subject population included the newborns from 1997 to 2004 in Taiyuan and the data of air pollution in the same time were collected.Logistic regression was used to analyze OR in the case-control design.Results Statistically,the prevalence of premature birth,birth defects and the mortality of infants and fetuses were significantly associated with PM10 air pollution.For premature birth,odds ratios were ranged from 1.17 to 1.76,the highest OR,1.76(95%CI:1.64-1.90),was found during the first 3 months of pregnancy.For birth defects,odds ratios were from 1.37 to 1.67,the highest OR,1.67(95%CI:1.28-2.17),was found in the third month.Concerning mortality of infants and fetuses,it only showed a significant association in the third trimester and the OR was 1.66(95%CI:1.26-2.19).Regarding SO2 air pollution,it only showed the significant effect on premature birth during the first and second month,the odds ratios were 1.27(95%CI:1.21-1.34)and 1.07(95%CI:1.01-1.14)respectively.Conclusion Air pollution in the investigated city had an adverse effect on the pregnancy outcome and the stringent measures should be taken to abate the air pollution and to reduce the risk for reproductive health.

To investigate the dynamic change of TNF ? and HSP70 after gunshot wound on limbs of canine in hot and humid environment, the canines were divided into three groups: trauma in normal environment group(NE), trauma in heat acclimatization group (HA), trauma in hot and humid environment group(HHE). Tumor necrosis factor ? (TNF ?) and HSP70 were measured at the time of 0, 1, 3, 4, 6 ,8 , 10, 14, 18, 24h after canine being gunshot. The results showed: ①TNF ? in muscle tissue from gunshot wound tract was significantly higher than that in blood plasma( P

0.05). Islet secretion viabilities in both Matrigel-coated and type Ⅰ and Ⅳ collagen mixture-coated group were better than the control group (P

Objective To develop a portable, easily-used and effective fracture fixation material during emergency treatment of battle wound. Methods Based on vacuum plasticity, macromolecule particles were filled into prefabricated bag, in which the air was deflated. The bag became stiff. When it was bound with belt, it acted as fracture fixation. Results Experiments showed that this kind of splint attached closely with body without any accessorial material. The effect was good without any restriction from region or environment. Conclusion This kind of fracture fixation splint has advantages in operation time, applicable parts and fixation effects compared with other fixation material.

Objective To evaluate the optimized efficacy of thoracic paravertebral block (TPVB) combined with general anesthesia via the research on the postoperative cellular immune function in the patients undergoing radical resection for esophageal cancer.Methods Forty American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients of both sexes,aged 45-64 yr,with body mass index of 20-25 kg/m2,scheduled for elective radical resection for esophageal cancer,were divided into 2 groups (n =20 each) using a random number table:general anesthesia group (G group) and TPVB combined with general anesthesia group (TPVB+G group).In group TPVB+G,TPVB was performed at T4 and T6 on the operated side under ultrasound guidance with 0.5％ ropivacaine 15 ml before anesthesia induction.Anesthesia induction was started after the level of block was confirmed.Anesthesia was maintained with propofol given by target-controlled infusion at the target plasma concentration of 1-4 μg/ml,and bispectral index value was maintained at 40-50.Patient-controlled intravenous analgesia was performed after operation,and visual analog scale score was maintained ≤ 3.Before anesthesia induction,at the end of operation and at 24 and 48 h after operation,blood samples were collected from the central vein for determination of the levels of T lymphocyte subsets CD3+,CD4+ and CD8+ and CD4+/CD8+ ratio.Ricker Sedation-Agitation Scale scores were recorded at 10 min,20 min,30 min and 1 h after extubation and 6,24 and 48 h after operation.The consumption of intraoperative remifentanil,requirement for vasoactive agents during recovery from anesthesia,the number of unsuccessfully delivered doses and the total number of attempts were also recorded.Results Compared with group G,Ricker Sedation-Agitation Scale scores were significantly decreased at 10 min after extubation,the consumption of intraoperative remifentanil,requirement for vasoactive agents during recovery from anesthesia and the number of unsuccessfully delivered doses were decreased,and the postoperative CD4+ level and CD4 +/CD8 + ratio were increased in group TPVB+G (P＜0.05).Conclusion TPVB combined with general anesthesia can improve the postoperative cellular immune function and is an optimal anesthesia regimen in the patients undergoing radical resection for esophageal cancer.