Objective The effect of angiotensinⅡ(AngⅡ) on cardiac hypertrophy were studied in SD rat with different ages. Methods Cardiocyte and cardiac fibroblasts in neonatal SD rat group and 12 months SD rat group were cultured in vitro. In each ages group, control MEM, angⅡ, angⅡantagonist(Losartan) and angⅡ+losartan were administrated respectively. 3 H leu incorporation into cardiocyte and 3 H TdR incorporation into cardiac fibroblasts were measured in neonatal rat group and 12 month rat group. To investigate the effect of cardiac fibroblasts on cardiocyte under the influence of angiotensinⅡ, the supernatant of cultured cardiac fibroblasts with angiotensinⅡ, the supernatant of cultured CBS with losartan and the supernatant of cultured cardiac fibroblasts with angiotensinⅡ and Losartan were added into cultured cardiocyte respectively. 3 H leu incorporation into cardiocyte were tested. Results 10 6 mol/L angⅡcan evidently augment 3 H leu incorporation into cardiocyte ( P

Objective To explore the effect of transforming growth factor β1 (TGF-β1) on epithelial-mesenchymal transition in rat peritoneal mesothelial cells(RPMCs) and its mechanism.Methods Primary peritoneal mesothelial cells of SP rats were cultured in vitro. After synchronization for 24 h, RPMCs were randomly divided into 2 groups: Group A (control), Group B (TGF-β1, 10 μg/L). RPMCs were stimulated by 10 μg/L TGF-β1 for different time. The mRNA and protein expression levels of E-cadherin, α-smooth muscle actin (α-SMA) and collagenⅠwere measured by RT-PCR and Western blot, respectively. The protein expression level of total RhoA was measured by Western blot. Active RhoA was extracted by Plasma Membrane Protein Extraction Kit, and assessed by Western blot. Results TGF-β1 down-regulated mRNA and protein expression of E-cadherin in RPMCs, and upregulated mRNA and protein expression of α-SMA and CollagenⅠ. TGF-β1 stimulation elicited a robust increase in RhoA activity in a time-dependent manner. RhoA activity peaked at 1 h.Conclusion RPMCs can be transdifferentiated into myofibroblast under the effect of TGF-(β1,)and the mechanism may be related to the activation of RhoA associated signal pathway.

Objective: To study the distribution,combination law of syndrome factors and characteristics of base syndromes of pneumonia based on document data.Methods: Combined methods of computer retrieval and man-made retrieval were adopted,the document data from 1981 to 2004 on lower respiratory tract infection was gathered by way of document database index.And the data was analyzed by description,Logistic regression and clustering analysis.Results: 32 documents and 141 items were used for analysis.The results indicated that among the 17 syndrome factors related to syndrome differentiation of pneumonia,the highest frequency of location syndrome factor was lung;the frequency of f ire,heat and yin-def iciency was higher;pathogenic wind,pathogenic heat and phlegm were the main etiological factors.In the document study,there were four patterns in the combinative model of syndrome factors,the combination of two syndrome factors and the combination of three syndrome factors were the main patterns,the cumulative percentage was 95.7%.Meanwhile,the main symptoms and the sub-symptoms of the mainly syndromes were screened out by adopting statistical description,logistic regression and clustering analysis.Conclusion: The main syndrome types and their inscapes of pneumonia can provide enough references for the next step research.

Objective To investigate the effect of remote ischemic preconditioning (RIPC) on the lung injury during one-lung ventilation (OLV) in the patients undergoing thoracic surgery.Methods Eighty patients scheduled for elective radical operation for esophageal cancer,were randomly divided into 2 groups (n=40 each) using a random number table.control group (group C) and group RIPC.At 0 (T1),30 min (T2),1 h (T3) and 2 h (T4) of OLV,blood samples were obtained from the radial artery for blood gas analysis and determination of plasma concentrations of tumor necrosis factor-α (TNF-α),interleukin-1β (IL-1ββ) and IL-10.Oxygenation index(OI),respiratory index(RI) and PaO2/PAO2 were calculated.Exhaled breath condensate was collected and the pH value was measured.Results Compared with group C,Oxygenation index was significantly increased,and respiratory index was decreased at T2-T4,the plasma concentrations of TNF-α and IL-1β were decreased,and the pH value of exhaled breath condensate was increased at T3-T4,and the plasma concentration of IL-10 was increased at T4 in group RIPC.Conclusion RIPC can inhibit inflammatory responses and reduce airway acidification,thus attenuating the lung injury during OLV in the patients undergoing thoracic surgery.

Objective To investigate the effects of different values of PEEP on cardiac index (CI), stroke volume variation (SVV) and oxygen transport index (DO2I) in patients monitored by FloTrac/Vigileo system, and to provide some references for the hemodynamic management and improvement of oxygenation for patients. Methods Sixty patients scheduled for elective television (TV) auxiliary thoracoscope radical operation for esophageal cancer were included in this study. Data of CI, SVV and DO2I were observed by the FloTrac/Vigileo system. Changes of CI, SVV and DO2I were recorded after anesthesia induction and turn left side (T0), artificial pneumothorax with 0 PEEP after 5 minutes (T1), artificial pneumothorax with 5 PEEP after 5 minutes (T2), artificial pneumothorax with 10 PEEP after 5 minutes (T3), and artificial pneumothorax with 15 PEEP after 5 minutes (T4). Results Compared with T0, CI decreased and SVV increased significantly at T1, T2, T3 and T4(P<0.05). Compared with T1, CI decreased and SVV increased at T4. DO2I increased at T2 and T3 compared with that of T1(P<0.05). Conclusion PEEP may have a certain influence on CI and SVV in the process of operation. The values of 5-10 PEEP can significantly improve oxygenation and have a less influence on hemodynamics, which can be appropriately used in clinical care.

Objective To investigate the influence of different respiratory parameter setting during gynecological laparoscopic surgery on early postoperative cognitive function.Methods Eighty patients undergoing elective ovarian cancer or cervical cancer were grouped randomly into groups A, B,C and D.In group A patients were ventilated with respiratory parameters of VT 8 ml/kg,RR 12 times/min.While patients in groups B,C and D with identical minute volume 105 ml/kg though with respective RR of 12,1 5 and 18 times/min respectively.Patients in four groups were all graded by the MMSE at time points of preoperation(T0 ),postoperative 1 h(T1 ),6 h(T2 ),24 h(T3 ),48 h(T4 ), 72 h(T5 ).PaCO2 of arterial blood gas were tested before pneumoperitoneum(Ta)and immediately af-ter pneumoperitoneum(Tb).Results PaCO2 at Tb was higher in each group than that at Ta(P <0.05).Patients in group A showed the highest PaCO2 at Tb while PaCO2 in group C were lowest. The MMSE scores in group C were significantly higher than those in other groups at T1-T3 (P <0.05).The values at T4 in group A were lower (P <0.05)than those in other groups.Values at T1-T4 in group A were lower than that at T0 (P <0.05).In groups B and D at T1-T3 MMSE scores were lower than those at T0 and patients in group C showed lower MMSE scores at T1 and T2 (P <0.05).Conclusion Early postoperative cognitive function can be improved by regulating intraoperative respiratory parameters properly and increasing minute volume adequately in gynecological laparoscopic surgery.

Objective To study the relationship between lumbar and proximal femoral bone mineral density (BMD) with gender,age and body mass index (BMI) in adolescents ranged from 12 to 19 years of age in Tianjin city,and provide preliminary reference to understand the bone health status of adolescent in the city.Methods The BMD values of lumbar spine (L1-L4,),femoral neck and total hip were detected by the dual-energy X-ray absorptiometry (DXA) in 221 adolescents from Tianjin Hospital,and the Z value was used for clinical diagnosis standard.Simultaneously the height and weight of adolescents were measured,and BMI was calculated.The differences of BMD values in the lumbar,femoral neck and total hip were compared between different age,gender and BMI groups.Results The BMD values of femoral neck and total hip were significantly higher in males than those in females (P ＜ 0.01).The BMD values of lumbar spine,femoral neck and total hip were gradually increased with age.The BMD was correspondingly increased in adolescents with higher BMI in the lumbar spine,femoral neck and total hip.Conclusion There is a close relationship between BMD with age,gender and BMI in adolescents.We should pay more attention to the nutrition health and the level of BMI in adolescents.

Objective To investigate the relationship between serum visfatin level and coronary artery stenosis.Methods Based on coronary angiography,85 patients were diagnosed as coronary heart disease.According to oral glucose tolerance test,these patients were divided into 3 groups,34 patients with normal glucose tolerance(CHD group),25 with impaired glucose regulation(CIG group),and 26 with type 2 diabetes mellitus(CDM group).30 non-comary heart disease subjects with normal glucose tolerance were selected as the control group(CON group),and they underwent coronary CT angiography scan and were confirmed coronary disease-free.Blood pressure,body mass index(BMI),waist circumference(WC),waist hip ratio(WHR),fasting plasma glucose(FPG),blood lipid analysis,fasting insulin,and HbA1C were determined.Serum visfatin concentration was assayed and the status of coronary artery was assessed.Coronary artery stenosis was screened by coronary interventional angiography and assessed by Gemini scoring system in CHD,CIG,and CDM groups.Results Compared with control group,serum visfatin in CHD,CIG,and CDM groups were significantly higher(all P<0.05).Compared with CHD group,serum visfatin in CIG and CDM groups were significantly higher(all P<0.05).The correlation analysis showed that serum visfatin level was positively correlated with the involved branches of coronary arteries(r=0.807,P<0.01),serum visfatin level was positively related with Gensini coronary artery score(r=0.669,P<0.01).Visfatin was also positively correlated with WC,WHR,triglyceride(TG,r=0.200,P=0.032,r=0.185,P=0.047,r=0.321,P<0.01),while high density lipoprotein cholesterol(HDL-C)was negatively correlated with visfatin(r=-0.354,P<0.01).Multiple regression analysis showed that senlm hvel of TG and WC were the main influencing factors of visfatin.Conclusion (1)The level of serum visfatin may reflect the severity of coronary artery stenosis,detection of visfatin helps to make early diagnosis of CHD.(2)The raised serum level of visfatin in comary heart disease patients with imparied glucose tolerance is consistent with clinical evidence that diabetic patients have more severe coronary diseases.(3)WC and serum TG are main inilucencing factors,suggesting that visfatin is correlated with abdominal obesity.

Objective To observe the long dwell ultrafiltration volume after using 7.5% icodextrin in different peritoneal transport characteristics of peritoneal dialysis patients. Methods Subgroup analysis of a perspective multicenter randomized double blind and parallel control study was performed. Continuous ambulatory peritoneal dialysis (CAPD) patients were divided into high transport (H) group, high-average transport (HA) group, low-average transport (LA) group and low transport (L) group according to D/Pcr and Twardoski standard. Ultrafiltration volume of night long dwell dialysate was calculated before and after clinic trial for 2 weeks and 4 weeks to evaluate the different effect of transporters on ultrafiltration volume. Results A total of 201 CAPD patients were enrolled in the study, including 98 patients in icodextrin group (ICO group) and 103 patients in glucose group (GLU group). Male and female cases were 96 and 105 respectively. Age was (56.1±13.7) years old (range from 18 to 81). One hundred and ninety-eight patients finished peritoneal equilibrium test (PET), including 24 (12.1%) of H, 72(36.2%)of HA, 81(40.7%)of LA,and 21 (11.0%)of L. After follow-up for four weeks, the ultrafiltration volume was much higher than baseline in H, HA and LA groups. Also ultrafiltration volume in icodextrin group was much higher than that in glucose-based dialysate. Howerve, the increased volume was not significantly difference in L group. Ultrafiltration volume of icodextrin was positively correlated to D/Pcr (R2=0.1681,P＜0.01), while ultratration volume of dextrose was negatively correlated to D/Pcr (R2=0.0949,P＜0.01). Conclusion Compare to glucose-based dialysate (Dineal), 7.5% icodextrin dialysate (Extraneal) improves the ultrafiltration and peritoneal creatinine clearance of long dwell notabily in H, HA and LA group.

Background The study on the classification of fungi is very important for the diagnosis and treatment of fungal keratitis.Identifying the different species of filamentous fungi is a critical factor for the application of anti-fungal drug in treating keratitis.ObjectiveThis report studies the relationship between the genotype of filamentous fungi and the clinical factors.MethodsFifty-two patients with filamentous fungal keratitis determined by clinical and laboratory examination were recruited in Tongren Hospital from January 2006-December 2006.The lesions were graded on the severity of the corneal ulcer and the presence of hypopyon.The filamentous fungal keratitis was treated with topical and systemic administration of anti-fungal drugs or corneal transplantation.The isolates were cultured in potato culture and identified by morphological characteristics based on the Nelson criterion and genotyped by the rDNA ITS method.The clinical data was retrospectively analyzed.ResultsForty-eight species (eubacteria are bacteria,not fungi)of fungus were identified by morphological characteristics,and the filamentous fungi were divided into 4 types based on the phylogenetic relationships within the rDNA ITS of the 52 filamentous fungi.The morphological characteristics and genotype were confirmed in 48 strains of eubacteria and 31 strains of 52 filamentous fungi (90.3%).The 4 groups of fungi were classified by genotype as follows:group 1 represents 22 strains including 20 strains of Fusarium solani and 2 strains of Fusarium oxysporum;group 2 represents 12 strains including 8 strains of Fusarium moniliformis,3 strains of Fusarium proliferatum and 1 strain of Fusarium incarnatum;group 3 represents 5 strains including 1 strain of Fusarium moniliformis and 4 unknown strains;group 4 represents 13 strains including 10 strains of Aspergillus spp.and 3 strains of Alternaria spp.Significant differences were found in the disease duration (P=0.00),inducing cause (P=0.03),ulcer grade (P=0.01)and outcome of the anti-fungal treatment (P=0.035)when compared between group 1 and 2 with group 3 and 4.Conclusion Filamentous fungi that cause keratitis could be correctly identified by sequencing the internal tanscribed spacer of rDNA.There are significant clinical differences among the groups classified by genotype.