Objective To investigate the effects of surgical trauma on Toll?like receptor 4 ( TLR4) expression in the hippocampus of aged mice. Methods Ninety male Kunming mice, aged 16-18 months, weighing 30-40 g, were randomly divided into 3 groups ( n=30 each) using a random number table:control group ( group C), anesthesia group ( group A), and partial hepatectomy group ( group PH). Normal saline 0.1 ml∕10 g was injected intraperitoneally in group C. In group A, fentanyl 0.2 mg∕kg and droperidol 5 mg∕kg were injected intraperitoneally. In group PH, fentanyl 0. 2 mg∕kg and droperidol 5 mg∕kg were injected intraperitoneally, and the mice underwent partial hepatectomy. Cognitive function was assessed using Morris water maze test at 1, 3, and 7 days after anesthesia or surgery. After the end of the test, the hippocampus was immediately harvested for determination of the TLR4, tumor necrosis factor?alpha ( TNF?α) and interleukin?1 beta ( IL?1β) protein and mRNA expression by Western blot and real?time reverse transcriptase?polymerase chain reaction, respectively. Results Compared with group C, no significant changes were found in group PH in the escape latency, percentage of swimming distance in the target quadrant, and TLR4, TNF?α and IL?1β protein and mRNA expression at each time point after anesthesia in group A (P>0.05), and the escape latency was significantly prolonged, the percentage of swimming distance in the target quadrant was decreased, and the expression of TLR4, TNF?α and IL?1βprotein and mRNA was up?regulated at 1 and 3 days after surgery in group PH ( P<0. 05 or 0. 01 ) . Compared with group A, the escape latency was significantly prolonged, the percentage of swimming distance in the target quadrant was decreased, and the expression of TLR4, TNF?αand IL?1βprotein and mRNA was up?regulated at 1 and 3 days after surgery in group PH (P<0.05 or 0.01). Conclusion Surgical trauma can up?regulate the expression of TLR4 in the hippocampus of aged mice, which may be involved in the mechanism of surgical trauma?induced postoperative cognitive dysfunction.

Objective To measure mitral annual displacement (MAD) by M-mode echocardiography in normal second and third trimester fetuses,and assess relationships between MAD and gestational age and routine echocardiographic parameters for evaluation of left ventricular function.Methods One hundred fifty-five normal fetuses from 19 to 38 weeks of gestation were recruited in the study.MVD and tricuspid annual displacement (TAD) were measured.Early diastolic inflow velocities (E) of the atrioventricular valves were assessed by pulsed-wave Doppler(PW),and early diastolic velocities (Em) of the mitral annular were estimated by pulsed-wave tissue Doppler imaging (TDI).The ratio of E/Em was calculated.Results In normal fetuses,the MAD was (7.05 ± 1.17) mm.There was significant positive correlation between the fetal MAD and advancing gestational age ( r =0.82,P ＜0.01 ),and between MAD and E,A,Em,Am or Sm ( r =0.25,0.24,0.32,0.29 and 0.40 respectively,P ＜0.01).There was no correlation between fetal MAD and E/A,E/Em,LVEF or LVFS.The left MAD was significantly lower than the right TAD ( P ＜0.01 ).Conclusions MAD of fetuses from 19 to 38 weeks of gestation can be quantitatively measured by Mmode echocardiogram.The measurement of MAD provides a reliable quantitative standard to estimate long axis ventricular function of fetuses,which may be clinically useful in prenatal detecting early cardiac failure.

Objective To understand the key risk factors of schistosomiasis transmission in Jingzhou City,so as to provide the evidence for improving the treatment of these risk factors. Methods Each village of six counties was investigated and 3 envi-ronments were surveyed each village for the distribution of Oncomelania snails and animal stools in the field. The results were ana-lyzed and the risk factors of schistosomiasis transmission were assessed. Results The density of living snails was 0.43 snails per 0.1 m2,the frequency of the frames with snails was 9.12%,and no schistosome infected snails were found. All of the animal stools collected from the field were from bovines. The schistosome positive rate of animal stools was 37.50%(3/8)among the environ-ments,and the schistosome infection rate of stools was 8.11%(3/37). The schistosome infection rate of animal stools was 0 near the residence living sites,and the positive rates were 12.50%and 8.33%in the ditches and slopes,respectively(χ2=0.07,P>0.05). Conclusions Bovine is still the main infectious source of schistosomiasis,i.e. the main risk factor of the disease transmis-sion. Therefore,the strategy of controlling bovine should be strengthened.

Objective To explore the effects of BSA on hypoxia inducible factor/hypoxia response element (HIF/HRE) transcription activity in rat tubular epithelial cells (NRK-52E) with HRE-Luc reporter plasmid.Methods Luciferin activity of NRK-52E cells incubated by a medium contained BSA in varying concentration (0,5,10,20 mg/ml) and stimulus duration (24,48,72 h) was detected by dual luciferase detecting system based on HRE-Luc reporter plasmid and HIF-1 α expression was detected by Western blotting.Results HIF/HRE transcription activity of NRK-52E cells was increased in BSA incubation group (10 mg/ml,48 h) compared with blank control (BSA 0 mg/ml,48 h) [(2.59±0.35)vs (1.03±0.09),P=0.000].HIF-1α expression of NRK-52E cells was increased in BSA incubation group (20 mg/ml,48 h) compared with blank control (BSA 0 mg/ml,24 h) [(0.052±0.010) vs (0.014±0.003),P=0.000].Conclusion Albumin can increase HIF/HRE transcription activity of TEC.

objective To investigate the value of NT-proBNP in assessing the volume status in maintenance hemodialysis patients with non-dominant edema.Methods One hundred and forty-five patients were recruited.Bioimpedance measurements were performed for overhydration (OH).NT-proBNP was detected by colloidal gold method.Patients were divided into three groups by levels of OH variability (△ OH,equal to OH minus weight increase) as group H (hypervolemia,n=90); group N (normovolemia,n=36) and group L (hypovolemia,n=19).Hemoglobin,albumin,blood urea nitrogen and serum creatinine were assayed,blood pressure and body mass increase were recorded.Dry weight of patients in Group H were adjusted in 3 months,the relationship between NT-proBNP and volume change were assessed.Results (1) At baseline,overall plasma NT-proBNP levels were higher than normal range.The median NT-proBNP levels in group H and group N were [1318.50(IQR 717.00,3154.25) pg/ml] and [703.50 (IQR 873.00,450.50) pg/ml],respectively.NT-proBNP was positively correlated with △OH value (r=0.801,P ＜ 0.001).(2) After 3 months,NT-proBNP levels in group H was significantly lower than baseline.Forty-one patients reached normal volume range (group H1),49 patients were resistant hypervolemia (group H2).The median NT-proBNP levels in group H1 and group H2 were [685.00 (IQR 422.50,988.50) pg/ml] and [1569.00 (IQR 982.50,2500.50) pg/ml],△ OH in group H1 and group H2 were [(0.63±0.23)L] and [(1.75±0.71)L],respectively.NT-proBNP and △ OH value in two groups had significant difference (P ＜ 0.05).NT-proBNP was positively correlated with △ OH value (r=0.684,P ＜ 0.001).(3) The area under ROC curve for NT-proBNP was 0.818,95％CI (0.733～ 0.904),P ＜ 0.001,since the absolute value of normovolemia was defined as ≤ 1.The cut off value of plasma NT-proBNP was set at 962.50 pg/ml in MHD patients with non-dominant edema,the diagnostic specificity and sensitivity were 79.6％ and 73.2％.Conclusion NT-proBNP could be used to assess volume status in MHD patients with non dominant edema.

OBJECTIVETo optimize the formulation of gel matrix of Saussurea involucrate.

METHODThe formulation of gel containing carbopol, azone, trimethylene glycol and alcohol was optimized by orthogonal design with evaluation indexes such as consistency in room temperature, consistency of average temperature of skin, yield value and rheopexy in room temperature.

RESULTThe optimal proportion of matrix components was made from carbopol-azone-trimethylene glycol-absolute alcohol (2. 0: 2. 0:15.0 : 30.0).

CONCLUSIONThe optimal formulation of S. involucrate gel based the optimal formulation is well-distributed and transparent, it has proper consistency and well rheopexy.

Objective To evaluate the association between LDL-C and ischemic stroke in patients with nonvalvular atrial fibrillation (AF).Method A total of 2 470 patients with nonvalvular AF were included in the present study.The clinical data and laboratory examination results of the patients in the hospital were collected.The subjects were either divided into the ischemic stroke history (n =560),and non-ischemic stroke history groups (n =1 910),or divided into the low-middle risk (n =566) and high risk groups (n =1 904) based on CHA2 DS2-VASc score.Results There were significant differences in the proportion of Han,the ratio of gender,age,hemoglobin,hematocrit,ALT,serum uric acid,HDL-C and LDL-C between the patients with ischemic stroke history and without (all P ＜ 0.05).Similarly,there were significant differences in the proportion of Han,the ratio of gender,age,white blood cell count,hemoglobin,hematocrit,platelet count,ALT,albumin,TG and LDL-C between subjects in the low-middle risk group and those in the high risk group (all P ＜ 0.05).A logistical regression analysis showed that LDL-C was an independent risk factor for both the ischemic stroke history (OR 2.089,95％ CI 1.860-2.347,P ＜0.05),and future ischemic stroke risk (OR 1.270,95％ CI 1.079-1.494,P ＜ 0.05) in patients with nonvalvular AF.Conclusion LDL-C is associated with ischemic stroke in patients with nonvalvular AF,and it is also an independent risk factor for future ischemic stroke in these patients.

Objective: Present study analyzed the association betwen the postassium voltage-gated channel KQT-like subfamily member 1 gene (KCNQ1) mutation and the clinical and the electrocardiographic features in 2 pedigrees with congenital long QT syndrome type 1 (LQT1) in Xinjiang Uygur Autonomous Region. Methods: Three family members were diagnosed as LQT1 patients in 2 Uygur congenital LQT1 families, these 3 LQT1 patients served as long QT group, 24 Uygur healthy volunteers served as control group. Electrocardiogram (ECG) and the gene detection were applied to compare the ECG and molecular genetic features between the long QT group and control group, and to explore the relationship between the KCNQ1 gene mutation and the clinical and the electrocardiographic features in these 2 families with congenital long QT syndrome type 1. Results: The LQT1 was diagnosed in 3 cases of the 2 pedigrees. The common features of ECG were QTc>480 ms, prolonged ST segment, and delayed T wave. The gene test evidenced a polymorphism of KCNQ1 gene exon 13:47G➝A(R16R). The mutation of 133G➝A9(G45S) of exon 16 resulted in the change of the original glycine (G) to serine (s). The ECG of the control group were normal, and there were no KCNQ1 gene mutations in control group. Conclusion The exon sequencing results of KCNQ1 gene in 2 Xinjiang Uygur congenital long LQT1 families showed that exon16 missense changes (133G to A (G45S)) can lead to amino acid mutation, this mutation may be a pathogenic mutation. Subsequent validation of the expanded sample will provide a reference for revealing the relationship between the KCNQ1 gene and the pathogenesis of LQT1.

Objective To evaluate the effect of sevoflurane on unfolded protein response-related cell apoptosis during acute lung injury in rats undergoing cardiopulmonary bypass ( CPB) . Methods For-ty-eight clean-grade healthy adult male Sprague-Dawley rats, aged 6-8 weeks, weighing 250-300 g, were allocated into 3 groups ( n=16 each) using a random number table method: sham operation group ( Sham group) , CPB group and sevoflurane group ( Sev group) . Left common carotid artery and right internal jugu-lar vein were only cannulated in group Sham. After establishing CPB, the flow rate was gradually adjusted to the maximum (100 ml·kg-1·min-1) and maintained for 60 min in group CPB. Two percent sevoflurane was inhaled for 30 min, and 15 min later the model of CPB was established in Sev group. Rats were sacri-ficed at 1 h after the end of CPB, lungs were removed and lung tissues were obtained. The pathological changes and ultrastructure of lung tissues were examined with a light microscope and with an electron micro-scope, respectively. The wet to dry weight ratio ( W∕D ratio) , apoptosis in lung cells ( by TUNEL assay) , expression of glucose-regulated protein 78 ( GRP78) , CCAAT∕enhancer-binding protein homologous protein (CHOP), c-Jun N-terminal kinase (JNK) and caspase-12 mRNA was determined by real-time polymerase chain reaction. The expression of GRP78, CHOP, phosphorylated JNK (p-JNK) and caspase-12 was de-tected by Western blot. The index of quantitative assessment of histologic lung injury ( IQA) was measured, and apoptotic index ( AI) was calculated. Results Compared with Sham group, the W∕D ratio, IQA and AI were significantly increased, the expression of GRP78, CHOP, JNK and caspase-12 was up-regulated ( P<0. 05) , and the pathological changes of lung tissues were accentuated in CPB group. Compared with CPB group, the W∕D ratio, IQA and AI were significantly decreased, the expression of GRP78, CHOP, JNK and caspase-12 was down-regulated ( P<0. 05) , and the pathological changes of lung tissues were sig-nificantly attenuated in Sev group. Conclusion The mechanism by which sevoflurane mitigates acute lung injury induced by CPB is related to inhibiting unfolded protein response related cell apoptosis in lung tissues of rats.

Objective To evaluate the effect of multimodal warming regimen on the postoperative outcomes and cost-effectiveness in the patients undergoing resection of liver cancer.Methods Sixty Ameri-can Society of Anesthesiologists physical status ⅠorⅡ patients of both sexes, aged 35-64 yr, with body mass index of 18-24 kg∕m2, of liver function Child-Pugh grade A, scheduled for elective resection of liver cancer, were divided into 2 groups(n=30 each)using a random number table: routine warming group (group R)and multimodal warming group(group M). Quilts were covered on the body exposed before in-duction of anesthesia, and the abdominal cavity was washed with the room-temperature peritoneal lavage flu-id during operation in group R.In group M, the lower body was covered using the forced-air warming system at 30 min before induction of anesthesia, and the temperature was maintained at 38℃ until the end of oper-ation; the solution used for infusion was warmed to 42 ℃ using a fluid-warming device during operation;the abdominal cavity was washed with 0.9% sodium chloride injection which was prewarmed to 37℃ during operation.The rectal temperature was recorded after anesthesia induction and before tracheal intubation (T1), at 30, 60, 90, 120 and 150 min after anesthesia and at the end of operation(T2-7). The parame-ters of thrombelastogram were measured before induction of anesthesia(T0), at T7and at 12 h after opera-tion(T8).At T0, T7, T8and 24 and 48 h after operation(T9,10), blood samples were taken from the in-ternal jugular vein for determination of plasma interleukin-6 concentrations by enzyme-linked immunosorbent assay.The extubation time, duration of post-anesthesia care unit stay, intraoperative blood loss, blood transfusion, requirement for allogeneic blood transfusion, length of hospitalization, occurrence of postoper-ative shivering, occurrence of hypothermia, volume of drainage on 1st and 3rd days after operation, neu-trophil count, cost of general anesthesia and total cost of hospitalization were recorded.Results Compared with group R, the extubation time and duration of post-anesthesia care unit stay were significantly short-ened, the intraoperative blood loss, volume of blood transfused, and volume of drainage on 1st day after operation were reduced, length of hospitalization was shortened, the requirement for allogeneic blood trans-fusion and incidence of postoperative shivering and hypothermia were decreased, the body temperature was increased at T2-7, R and K were shortened at T7, α angle was enlarged, the neutrophil count on 1st day af-ter operation was reduced, the concentration of plasma interleukin-6 was decreased at T8and T9, the cost of anesthesia was increased, and the total cost of hospitalization was reduced in group M(P<0.05). Con-clusion Multimodal warming regimen can not only promote postoperative outcomes but also improve the cost-effectiveness in the patients undergoing resection of liver cancer.