To investigate whether liver ischemia and reperfusion directly affect functions of a remote organ (lung), we reproduced a model of hepatic lobar ischemia and reperfusion in rats. Twenty four healthy male SD rats were randomized into three groups (each group = 8) . Group A served as sham operated control group, group B was subjected to 90 min ischemia of a lobe of the liver, and group C animals underwent 120 min reperfusion, following 90 min ischemia of a liver lobe. In addition to histologic examination of the lung in each group, plasma tumor necrosis factor ?(TNF ?),interleukin 1?(IL 1?),alanine aminotransferase(ALT), aspartate aminotransferase (AST), lactate dehydrogenase(LDH) levels, total protein content in bronchoalveolar lavage fluid (BALF) and lung dry to wet weight ratio were respectively examined in A, B and C groups. Blood pressures were monitored in each group. Histological manifestations of damage to the lung occured in groups B and group C were characterized by obvious intra alveolar and interstitial edema with inflammatory cellular infiltration. Plasma ALT, AST, LDH, were significantly increased in group C animals ( P

OBJECTIVE:To determine the contents of chicoric acid in three different pharmaceutical dosage forms by RP-HPLC.METHODS:Samples were determined on VP-ODS C18,with the mobile phase consisted of methanol-1% acetic acid-tetrahydrofuran(33∶62∶5) with flow rate at 1.0 mL?min-1,UV detection wavelength at 327 nm,column temperature at 30 ℃ and sample size at 20 ?L.RESULTS:The linear range of chicoric acid was 0.398 72～3.987 2 ?g(r=0.999 8).The average recoveries of the oral liquid,capsules,and tablets were 99.85%(RSD=0.98%),102.50%(RSD=1.84%),and 100.50%(RSD=1.69%),respectively.CONCLUSION:This method is accurate,reproducible,specific,and suitable for the content determination of chicoric acid.

ObjectiveTo study the relationship between function of cardiac autonomic nervous system and 24-hourambulatory blood pressure in diabetes mellitus with normal blood pressure in the casual assay.Methods71 DMpatients with normal blood pressure in casual assay were measured with cardiac power spectral analysis and 24hAMBPassessment.ResultsThere was no difference in 24hAMBP between DM patients without AND and normal subjects.24-hour ambulatory systolic pressure values and the prevalence of blood pressure burden in DM patients with mild AND were significantly higher than that in the control group and the percentage of day-night change in AMBP weresignificantly lower than that in the control group.In DM patients with severe AND, 24-hour ambulatory systolicpressure values and the prevalence of 24hAMBP burden were higher and the percentage of day-night change was lowerthan that in DM patients with mild AND, however, there was no significant difference between them.Conclusion Blood pressure was in severe disorder as soon as cardiac AND appear in DM patients with normal casual blood pressure.Abnormality of ANSF and blood pressure in DM patients contributed to the onset and development of cardiovascularevents.They are very important for investigating cardiac ANSF in DM patients and early intervening and treating DMpatients with AND.

OBJECTIVE:To study the factors affecting the compatible stability of amphotericin B(AmB)and 5%glucose injec-tion from different manufacturers,and to provide reliable evidence for the selection of solvent carrier of AmB. METHODS:After the combination of AmB and 5%glucose injection from different manufacturers(manafactarer A,B,C,D,E),it was shielded from light with room temperature(25℃)for 0,1,2,4,6 and 8 h. HPLC was conducted to determine the content changes of AmB in samples and observe the character,clarity and pH values. RESULTS:With the prolonging of time,insoluble impurities were detected in AmB and 5%glucose injection with the pH value less than 4.2 and the content of main drugs was decreased. Only 5%glucose injection from manufacturer A was in line with the requirements of AmB compatibility. CONCLUSIONS:The compatible stability of AmB and 5%glucose injection is closely related to pH values. It is suggested that manufacturers of infusions make clear descriptions of the pH value to select suitable infusions and safe drugs.

Objective To investigate the neuroprotective effects and mechanisms of 5-aminoimidazole-4-carboxamide ribonucleotide formyltransferase/ IMP cyclohydrolase(AICAR) supplement (AMPK activator) in different stages of neonatal rats sufferring from hypoxia-ischemia encephalopathy ( HIE). Methods Neonatal rat hypoxia-ischemia brain injury model was employed in this study. A total of 160 neonatal rats were distributed into five groups: sham, model control,AICAR30 min, AICAR24 h and AICAR72 h. The neuroprotective effects of AICAR supplement (30 min, 24 h, 72 h post operation) were compared by cresyl violet staining; Expressions of P-AMPK,AMPK in the brain tissue were measured by Western blotting.Foot-faults method was used to evaluate the long-term prognosis of the rats. Results Compared with the sham group, the survival of rats brain in model control group was significantly decreased [(100.0± 0.1)% and (45.3± 6.3)%, P< 0.05]. AICAR had neuroprotective effects when treated at 30 min and 24 h post operation,while the protective effects disappeared when treated later (72 h post operation) (P>0.05). Compared with the sham group, the expression of P-AMPK significantly increased about three times, while ATP level decreased close to the same. Conclusion Early AICAR treatment can protect hypoxia-ischemia brain injury by increasing AMPK-ATP level.

Objective To observe the effects of recombinant human interleukin 11(rhIL-11) on proliferation, migration and invasion of A549 cells, and the mechanism thereof. Methods Final concentrations of 0, 10, 20, 50 and 100μg/L rhIL-11 were added into pulmonary adenocarcinoma A549 cells. The cell proliferation was detected by MTT. The wound-healing, transwell migration assay were used to validate the capability of the migration and invasion of A549 cells. Matrix metallopro-teinases (MMP)-2 and MMP-9 protein expressions were revealed by Western blot assay. Results The proliferation of A549 cells was not significantly changed by rhIL-11. The cell capability to migrate and invade was significantly increased 24 h af-ter treatment with rhIL-11 (P<0.05). The expression levels of MMP-2 and MMP-9 were significantly un-regulated, and which were increased with the increased concentrations of rhIL-11 (P<0.05). Conclusion rhIL-11 can promote the migra-tion and invasion of A549 cells, and the up-regulation of MMP-2 and MMP-9 expression might be one of the mechanisms.

Aim To investigate the role of substance P in the brain of asthmatic rats.Methods Rats were injected with aluminum hydroxide and OVA allergens to prepare the animal model of asthma. Then the content of c-fos protein in asthmatic rats' brain was detected by immunohistochemical method (SABC).The content of substance P in paraventricular nucleus (PVN), the content of corticotropin-releasing hormone (CRH) in median eminence (ME), and the content of adrenocorticotropic hormone (ACTH) and corticosterone (CORT) in peripheral blood were detected by radioimmunoassay method. Then exogenous SP, SP receptor antagonist S0145 were microinjected in PVN to observe their effect upon lung function and HPA axis in asthmatic rats. Results In asthmatic rats, the content of SP increased within the PVN. The content of CRH, ACTH and CORT decreased (P<0.05).The ratio of expiratory and inspiratory and airway resistance increased. Diaphragm discharge points and lung compliance decreased (P<0.01).After microinject of SP in PVN, there was a further decrease in pulmonary function and the content of CORT, ACTH and CRH in asthmatic rats (P<0.01).While the SP receptor antagonist S0145 might reverse the change of lung function and hypothalamus-pituitary-adrenal axis (HPA axis) in asthmatic rats.Conclusion In asthmatic rats the SP in PVN can affect the function of HPA axis, involved in asthma attacks.

Objective To investigate the effects of C-terminal fragment of parathyroid hormonerelated protein (PTHrP107-139) on bone mineral density (BMD), bone histomorphometry and biomechanical properties in ovariectomized (OVX) rats and its effect on bone metabolism is also explored. Methods Forty 4-month old female Wistar rats in which 30 were ovariectomized and then divided into 3 groups: the placebo, the PTHrPC and the CT groups, the other 10 rats were Sham-operated as the control group (Sham). Five weeks later, the rats of PTHrPC and CT groups were subcutaneously injected with PTHrP107-139 (40 μg/kg) and Salmon Calcitonin (15 U/kg) respectively once every other day. The rats of the placebo and sham groups were injected with 0.2 ml saline once every other day. After treatment of 12 weeks, all rats were sacrificed and all samples were collected and analyzed. Results ① Compared with the placebo, the BMD and bone strength of PTHrPC and CT groups were significantly increased (P<0.05). ② Histomorphometry revealed that the tetracycline labeled bone surfaces, osteoid surfaces, mineral apposition rate and bone resorption rate were remarkably decreased in PTHrPC, and CT groups comparing with those of the placebo group. Conclusion Cter-minal PTHrP107-139 is effective in increasing the BMD, bone strength and quality when administered intermittently to ovariectomy-induced osteoporotic rats. Its increasing in bone quality may relate to reducing bone turnover and inhibiting resorption.

Objective To investigate the therapeutic effects of human parathyroid hormone related protein (PTHrP1-34) on osteoporosis of ovariectomized osteoporotic rats. Methods Sixty 4-month-old female Wislar rats were involved in this study and 40 of them were ovariectomized and another 20 received sham operation. After 6 weeks of ovariectomy the osteoporosis model was confirmed by examing 10 ovariectomized and sham-operated rats. The 30 osteoporotic rats were randomly divided into 3 treatment groups, i.e. PTHrP, estradiol and placebo. Human 40 ?g/kg PTHrP1-34 was subcutaneously injected once daily to PTHrP group and the estradiol group was injected with 40 ?g/kg estradiol benzoate once every 3 days.The placebo and shamoperated rats were given 0.2 ml saline every 3 days. The bone mineral density (BMD), bone histomorphology, the bone weight of dry and ash and serum Ca,P,alkaline phosphatase (ALP) were measured after 3 months' therapy. Results After 6 weeks of ovariectomy, the lumbar BMD of ovariectomized rats were significantly declined compared with those of the sham-operated rats. After 12 weeks treatment the femoral and lumbar BMD and the rate of bone weight of dry and ash in the PTHrP group were increased obviously compared with those of placebo groups.There was no significant difference between PTHrP group and estradiol group, in PTHrP group the percent age of trabecular area,trabecular width,osteoblast surface and mineral apposition rate were obviously higher than those in placebo group.Conclusion Treatment with 40 ?g/kg dose of hPTHrP1-34 administered once daily is effective in treating ovariectomy-induced osteoporosis.

Objective To investigate the stability of immunophenotyping in the course of relapse or at treatment failure of patients with acute lymphoblastic leukemia(ALL) and that of immunophenotyping of positive minimal residual disease(MRD).Methods From Aug.2000 to Dec.2007,33 children with ALL who relapsed or treated failure were enrolled. These children were detected MRD by flow cytometry. The immunophenotyping of children who relapsed or treated failure were compared with that of initial therapy;the immunophenotyping of MRD relapsed was compared with that of initial therapy.Results 1.In 23 out of 27 cases (85.18%) with B-ALL,changed at least 1 antigen between diagnosis and relapse.Six children with CD45 down-modulation and 2 children with CD45 up-modulation.Two children with CD19 down-modulation and 1 child with CD19 up-modulation.Six children with CD34 down-modulation and 4 children with CD34 up-modulation. Five children with CD10 down-modulation and 7 children with CD10 up-modulation.2.Six children with T-ALL had the same expression in CD45 between relapse and treatment failure. 3.These were 15 children had the least 1 case MRD,25 cases MRD were detected,these was 1 case up-modulation in CD45,1 case down-modulation in CD19,2 cases up-modulation and 8 cases down-modulation in CD34,3 cases up-modulation and 6 cases down-modulation in CD10.Conclusions Immunophenotyping of children with ALL may change at relapse and treatment failure. The frequency of change in B-ALL is higher than that of in T-ALL,but the change can not impact the detection of MRD.