Objective To investigate the effect of isoflurane administered before ischemia on polymorphonuclear neutrophil (PMN) infiltration and expression of adhesion molecules in the lung injured by ischemia-reperfusion.Methods One-hundred and twenty male SD rats weighing 250-350 g were randomly divided into 4 groups ( n = 30 each) :Ⅰ sham operation group (S) ;Ⅱ I/R group in which hilum of left lung was clamped for 45 min and then undamped for reperfusion; Ⅲ Iso + I/R in which 1 MAC isoflurane was inhaled for 30 min before ischemia and Ⅳ Iso + S in which 1 MAC isoflurane was inhaled for 30 min without I/R. The animals were anesthetized with intraperitoneal pentobarbital 50 mg?kg-1 then tracheostomized and mechanically ventilated with 100% O2(VT= 10-15 ml?kg-1) . PaCO2 was maintained at 35-45 mm Hg. Right jugular vein and left carotid artery were cannulated for BP monitoring, blood sampling and fluid and drug administration. Anesthesia was maintained with ketamine 10 mg?kg-1?h-1 and vecuronium 0.1 mg?kg-1?h-1. 1 MAC isoflurane (1.38% in rats) was inhaled for 30 min before hilum of left lung was clamped with an atraumatic clamp. Left lung ischemia was maintained for 45 min then the left lung was released for reperfusion. MAP was monitored and blood gases were analyzed during experiment. The animals were killed at the end of 45 minute ischemia and at 30, 60 and 120 min reperfusion and left lung was removed for: (1) determination of W/D lung weight ratio, myeloperoxidase (MPO) activity and expression of ICAM-1 mRNA; (2) light and electron microscopic examination; (3) broncho-alveolar lavage (BAL). BAL fluid (BALF) was collected and the number of cells, percentage of PMN and total protein concentration in BALF and the expression of CD18 on PMN surface were determined. Results The W/D lung weight ratio, MPO activity and expression of ICAM-1 mRNA in the lung tissue, the percentage of PMN and TP concentration in BALF and the expression of CD18 on PMN surface were all significantly increased during reperfusion in I/R group but isoflurane pretreatment significantly attenuated the I/R induced increases. Histological examination showed that the I/R induced lung injury was also ameliorated by isoflurane pretreatment. Conclusion Inhalation of isoflurane before ischemia could protect the lungs against I/R injury by inhibiting the PMN infiltration and expression of ICAM-1 mRNA and CD-18.

0.05) but CO, SV and CVP increased and SVR decreased significantly after AHH in both groups as compared with those before AHH. pH, Lac and COP did not change significantly after AHH. There was no significant difference in the volume of solution infused, blood loss, CO, SV, CVP and SVR between the two groups. Conclusion Age is not a primary factor negating the use of AHH. Under combined general-epidural anesthesia AHH with 6% hydroxyethyl starch (15 ml?kg-1 ) can be well tolerated by the elderly patients without cardiac and pulmonary disease.

Objective To observe the protective effect of the zinc gluconate combined with Salvia injection on noise induced serum immunoglobulin(IgG,IgM,IgA) and immune molecules (IL-2,IL-4) in rats.Methods 50 female SD rats were randomly divided into control group,noise group,zinc gluconate noise group(plus zinc group),Salvia injection noise group (plus Salvia group) and Zinc gluconate oral liquid and Salvia injection noise group(combined group),10 rats in each group.Except the control group,rats in the other groups were continuously exposed to high frequency steady noise for two weeks.The concentrations of serum immunoglobulin (IgG,IgM,IgA) and immune molecules (IL-2,IL-4) after the intervention of noise were compared.Results Serum levels of IgG,IgM,IL-2,IL-4of the control group were significantly higher than the noise group (all P ＜ 0.05),plus zinc group (all P ＜ 0.05),plus Salvia group(all P ＜0.05),the differences were statistically significant.Serum level of IgA of each group was not statistically different compared with control group (all P ＞ 0.05).Serum levels of IgG,IgM,IL-2,IL-4 in the noise group were significantly lower than those in the control group (all P ＜ 0.05),combined group (all P ＜ 0.05),the differences were statistically significant.Serum levels of IgG,IgM,IL-2 in plus zinc group were significantly higher than the noise group(all P ＜ 0.05).Serum IgA concentration of each group showed no significant difference compared with noise group(all P ＞ 0.05).Conclusion Zinc gluconate oral solution and Salvia injection have protective effect on immune system affected by noise in rats,the protective effect of combination of zinc gluconate oral solution and Salvia injection is stronger than the individual.

Objective To identify the expression of a fusion gene GCA formed from GM-CSF gene and LMP2A gene of Epstein-Barr virus (EBV) in a recombinant BCG (rBCG) and to study its immunoge-nicity.Methods The rBCG was constructed to express the fusion gene GCA and the expressed products were detected by Western blot assay .ELISA was performed to measure specific antibody titers in serum sam-ples from mice immunized with rBCG .Lactate dehydrogenase assay was used to analyze the cellular immuni-ty of mice.A mouse model of EBV-positive gastric carcinoma was established to evaluate the therapeutic effects of rBCG.Results The target proteins of GM-CSF and LMP2A were successfully expressed in rBCG . The specific antibodies were detected in rBCG immunized mice as indicated by ELISA .The maximum anti-body titer reached 1 ∶27 900 [(326.5±7.8) pg/ml] as injection with rBCG 5×108/mouse.The rBCG in-duced cytotoxicity of cytotoxic lymphocytes (CTLs) to EBV-positive gastric carcinoma cells (GT39) (with a killing rate of 89.6%±6.8%) was significantly higher than that of control group (P<0.05) The sizes of tumor in PBS control group [(1964.0±548.7) mm3] and BCG group [(1268.65±72.4) mm3] were big-ger than those in rBCG group [(168.64±78.80) mm3].Conclusion The rBCG expressing GM-CSF and LMP2A fusion gene was successfully constructed .The rBCG could induce humoral and cellular immune re-sponses in mice and inhibit the growth of tumor .

Animals ; Calcitonin Gene-Related Peptide ; blood ; Electric Stimulation ; Endothelin-1 ; blood ; Female ; Heart Arrest ; blood ; Male ; Rabbits ; Resuscitation ; methods

Animals ; Death, Sudden, Cardiac ; Disease Models, Animal ; Rabbits

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Objective To measure and conduct statistic analysis of normal eyes by Pentacam. Methods Two hundred and twenty-one healthy people (442 eyes) underwent examinations of Pentacam, and they were divided into 5 groups by age: <40 years old group (50 people, 100 eyes), 40-49 years old group (50 people, 100 eyes), 50-59 years old group (50 people, 100 eyes), 60-69 years old group (50 people, 100 eyes) and >70 years old group (21 people, 42 eyes). Results With the increase of age, there were significant differences in chamber volume, chamber angle and anterior chamber depth among age groups (P<0.05). In elder age groups, there were significant differences in these parameters between males and females (P<0.01). Conclusion Anterior segment parameters are significantly correlated with age. After 60 years old, the anterior segment parameters become significantly different with gender.

The expression and possible role of integrin-focal adhesion kinase signal pathway in invasive pituitary adenomas were explored. Forty-nine human pituitary adenomas were detected for the expression of integrinbeta1 (INTbeta1) and focal adhesion kinase (FAK) by immunohistochemistry, and their correlation with the invasiveness of pituitary adenomas as well as between themselves was analyzed. The results showed that INTbeta1 was expressed in 46 cases (93.9%) and FAK in 36 cases (73.5%), respectively, and their expression levels were highly correlated with tumor invasiveness, but not with the tumor types. It was suggested that the integrin-focal adhesion kinase signal pathway plays a role in the invasiveness of pituitary adenomas.

Objective To investigate the effects of zinc gluconate combined with Danshen injection on the plasma lipid level following exposure to noise in rats. Methods Fifty female SD rats were randomly divided into a control group, a noise exposure group (model group), a zinc gluconate + noise exposure group (zinc gluconate group), a Danshen injection+noise exposure group (Danshen injection group) and a zinc gluconate+Danshen injection+noise exposure group (combination group), 10 rats in each group. The zinc gluconate group received intragastric administration of zinc gluconate 8-10 mg/(kg?d), the Danshen injection group received intraperitoneal injection of Danshen injection 6 mg/(kg?d), the combination group received intragastric administration of zinc gluconate 8-10 mg/(kg?d) and intraperitoneal injection of Danshen injection 6 mg/(kg?d). On the day 10, except in the control group, the rats in the rest of the groups were continuously exposed to high frequency steady noise for 7 days (4 000 Hz, 95 dB, 3 h/d). The serum levels of total cholesterol (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were detected. Results The serum levels of TC (1.88 ± 0.17 mmol/L vs. 1.55 ±0.09 mmol/L), TG (1.45 ± 0.38 mmol/L vs. 1.01 ± 0.27 mmol/L), LDL-C (0.29 ± 0.04 mmol/L vs. 0.23 ± 0.03 mmol/L) in the model group were significantly lower than those in the control group (P<0.01 or P<0.05), while the serum HDL-C level in the model group were significantly lower than that in the control group (0.55 ± 0.08 mmol/L vs. 0.62 ±0.06 mmol/L;P<0.01). The serum TC level in the zinc gluconate group was significantly lower than that in the model group (1.71 ± 0.11 mmol/L vs.1.88 ± 0.17 mmol/L;P<0.05). The serum levels of TC (1.73 ± 0.21 mmol/L vs. 1.88 ± 0.17 mmol/L) and LDL-C (0.25 ± 0.03 mmol/L vs. 0.29 ± 0.04 mmol/L) in the Danshen injection group were significantly lower than those in the model group(all P<0.05). The serum levels of TC (1.57 ± 0.21 mmol/L vs. 1.88 ± 0.17 mmol/L), TG (0.84 ±0.40 mmol/L vs. 1.45 ± 0.38 mmol/L) and LDL-C (0.24 ± 0.05 mmol/L vs. 0.29 ± 0.04 mmol/L) in the combination group were significantly lower than those in the model group (P<0.01 or P<0.05), and the serum HDL-C level (0.61 ± 0.07 mmol/L vs. 0.55 ± 0.08 mmol/L) in the combination group was significantly higher than that in the model group (P<0.05). Conclusions Noise exposure may induce dyslipidemias in rats. Zinc gluconate and Danshen injection can regulate the plasma lipid level following exposure to noise in rats, and combination of zinc gluconate and Danshen injection may be superior to zinc gluconate or Danshen injection alone.