0 05). The detective rate of (85 7%) CgA in the P53 protein positive group(21 cases) was significantly higher than that of 54 5% the P53 protein negative group(55 cases). Conclusions The positive rate of CgA was increased with corresponding to the lower down of differentiation grades . Very close relationship is found between the expression of P53 protein and the incidences of CgA positive cell. It suggested that the expression of P53 protein might play an important role in neuroendocrine differentiation in ovarian mucinous tumors.

Acute Lung Injury ; metabolism ; Animals ; Extremities ; blood supply ; Group II Phospholipases A2 ; metabolism ; Male ; Rats ; Rats, Wistar ; Reperfusion Injury ; metabolism ; Taurine ; pharmacology

AIM:In order to study the effect of the extracellular domain of cadherin 5 on the growth of a human breast cancer cell line MDA-MB435.METHODS:Cadherin extracellular domain repeats 1 to 4(CED1-4)was cloned by using RT-PCR technique,and inserted into the plasmid vector pMSCV.pMSCV-CED1-4 was propagated in XL-blue strain of Escherichia coli,extracted and purified.CED1-4 was cut by restriction endonuclease,examined by using agar gel electrophoresis,and finally sequenced.CED1-4 gene was transferred into MDA-MB435 cell line.The expression of CED1-4 gene in MDA-MB435 cell was analyzed by methods of RT-PCR and Western blotting.The effect of CED1-4 on the growth of MDA-MB435 cell was observed by the methods of proliferation experiments in vitro and the experiments in nude mice in vivo.RESULTS:The recombinant vector pMSCV-CED1-4 was successfully constructed.CED1-4 band appeared between the 1 636 bp and 1 018 bp in agar gel electrophoresis.The sequence result showed that CED1-4 had 1 452 bp and codes 484 amino acids.PCR and Western blotting identified that CED1-4 mRNA and protein were expressed in the transfected MDA-MB435 cells.Cell proliferation experiments showed that the proliferation rate of MDA-MB435 cells was lower in the experimental group than that in the experimental control group and the blank control group.The mean volume and weight of tumors in nude mice were lower in the experimental group than those in the experimental control group and the blank control group.CONCLUSION:The growth of a human breast cancer cell line MDA-MB435 is inhibited in vitro and in vivo by cadherin 5 extracellular domain CED1-4.

Objective To evaluate the effects of different concentrations of remifentanil on the expression and distribution of gap junction protein connexin 43 (Cx43) in the cardiomyocytes of rabbits.Methods Healthy adult rabbits of both sexes,weighing 2.0-2.5 kg,were anesthetized with pentobarbital sodium.Their hearts were rapidly excised and retrogradely perfused in a Langendorff apparatus with K-H solution saturated with 95％ O2-5％ CO2 at 37 ℃.After 15 min of stabilization with K-H solution,the 24 isolated hearts were randomly divided into 4 groups (n =6 each) using a random number table:control group (group C),and low,medium and high concentrations of remifentanil groups (R1-3 groups).The hearts were continuously perfused with K-H solution at 37 ℃ in group C.The hearts were perfused for 60 min with K-H solution containing remifentanil 12,25 and 50 ng/ml in R1-3 groups,respectively.The myocardial specimens were then obtained from the anterior wall of the left ventricle for detection of the expression and distribution of Cx43 by Western blot and immunohistochemistry,respectively.Results The expression of Cx43 was gradually down-regulated in C and R1-3 groups in turn (P＜0.05).Compared with group C,there was a tendency for the proteins localized at end-to-end contact sites of ventricular cardiomyocytes to localize at side-to-side contact sites in R1-3 groups,and the distribution was messy in R1-3 groups.Conclusion Remifentanil dose-dependently down-regulates the expression of Cx43 and changes the distribution of Cx43,which may be one of the mechanisms of remifentanil-induced arrhythmia in rabbits.

Object To study the reactivation of neferine (Nef) and pralidoxime chloride (2-PAM?Cl) on mice brain cholinestrase (ChE) inhibited by organophosphate. Methods Micro-DTNB method was used to determine the ChE activity of mice brain inhibited by DDVP in vitro and in vivo, then the inhibitory effect of DDVP (0.001-0.03 mg/L) on mice brain ChE in vitro was observed. The reactivative effect of Nef and 2-PAM?Cl on brain ChE of poisoned mice with DDVP in vivo and in vitro was compared. Results In vitro, the inhibitory effect of DDVP at different concentrations on mice brain ChE showed a concentration-effect relationship. The IC_(50) was 0.003 mg/L. The reactivative effect of Nef (2.4, 4.8 mg/L) and 2-PAM?Cl (5, 12.5 mg/L) on brain ChE inhibited by DDVP (0.02 mg/L) enhanced with increasing their concentrations. In vivo, after 30 min of treated with DDVP (10 mg/L, sc), the mice were given (ip) with Nef (15, 30 mg/kg) or 2-PAM?Cl (25, 50 mg/kg), respectively. The ChE activity rate in these two treated groups were (41.6?10.9) %, (56.5?12.4) % and (24.1?14.3) %, (28.4?11.9) %, respectively. The difference between poisoned group (sc DDVP) and Nef treated group was significant (P0.05). Conclusion The results suggest that Nef have a more remarkable reactivative effect on inhibited brain ChE in vitro and in vivo than 2-PAM?Cl. This may be contributed to that Nef can penetrate the blood-brain barrier.

Objective To examine whether activation of nuclear factor-?B (NF-?B) exists in skin lesions of patients with systemic lupus erythematosus (SLE ) and its association with disease activity. Methods The skin lesions were inves tigated histopathologically in patients with SLE, and NF-?B activation was ass essed by immunohistochemical analysis semi quantitatively. Results Expression o f NF-?B was found on skin lesions in 14 of 15 patients with SLE, including 8 s trong positive (), 3 moderate positive (), and 3 mild positive (+). Brown-coloured particles were mainly distributed in keratinocytes, especially in prick le cells and granular layer cells, as well as in mononuclear cells of dermis. Th ere was no correlation between NF-?B activation and disease activity. However, NF-?B was not detected in skin lesions of all patients with non-SLE and heal thy controls. Conclusions NF-?B activation may be associated with the developm ent of skin lesions in patients with SLE,and not with disease activity.

ObjectiveTo investigate the differences of whole blood chemical elements and urinary fluorine between patients with endemic fluomsis and patients without endemic fluorosis,and to find out the elements associated with endemic fluorosis and further lay a theoretical basis for clarify the pathogenesis of the disease.MethodsUsing case-control study,100 children aged 8 - 12 with dental fluorosis in Wushan and Fengjie counties of Chongqing from December 2010 to February 2011,and 30 adults with skeletal fluorosis were enrolled as case group; 100 children aged 8 - 12 without dental fluorosis and 30 adults without skeletal fluorosis were enrolled as internal control group; and 50 children without dental fluorosis and 30 healthy adults were selected as external control group in non-epidemic areas in Yubei district.Whole blood copper,zinc,calcium,magnesium,iron and urinary fluorine of all subjects were determined,and differences of these indexes were compared between groups.ResultsThe levels of copper,zinc,calcium,magnesium,iron and urinary fluorine of children in the case group were (30.08 ± 2.83),(74.04 ± 9.75)μmol/L,(1.65 ± 0.29),(1.37 ± 0.17),(6.79 ± 1.27)mmol/L,and (0.73 ±0.37)mg/L,respectively; the levels of these elements of children in internal control group were (28.65 ± 3.96),(72.83 ± 11.35)μmol/L,(1.62 ± 0.27),(1.36 ± 0.18),(6.73 ± 1.22)mmol/L,and (0.48 ± 0.21)mg/L,respectively; in external control group were (32.03 ± 2.99),(77.78 ± 10.85)μmol/L,(1.41 ± 0.11),(1.43 ± 0.13),(7.66 ±0.55)mmol/L,and (0.49 ± 0.26)mg/L,respectively(all P＜ 0.05),the comparison between any two groups indicated the levels of copper,zinc,magnesium,iron of the case group were lower than that of external control group,urinary fluorine was higher than that of internal and external control groups(all P ＜ 0.05).The levels of copper,zinc,calcium,magnesium,iron and urinary fluorine of adult case were (26.93 ± 4.37),(95.89 ± 12.45)μmol/L,(1.50 ± 1.76),(1.56 ± 1.96),(8.15 ± 1.00)mmol/L,and (2.17 ± 0.99)mg/L; internal control group were (26.26 ±4.96),(94.86 ± 12.18)μmol/L,(1.57 ± 0.12),(1.46 ± 0.16),(7.64 ± 1.00)mmol/L,and (1.44 ± 1.22)mg/L;external control group were (26.20 ± 2.96),(96.52 ± 11.11)μmol/L,(1.48 ± 0.14),(1.45 ± 0.16),(7.81 ±0.91 )mmol/L,and (0.55 ± 0.21 )mg/L,respectively.The levels of magnesium,iron and urinary fluorine of case group were higher than that of internal control group,magnesium and urinary fluorine were higher than that of external control group(all P ＜ 0.05).ConclusionsIn vivo anti-fluorine elements are deficient in the areas with endemic fluorosis.Other chemical elements,the environment and genetic factors may be related to the pathogenesisof the disease,which needs a further comprehensive analysis.

This paper is aim to investigate the pharmacokinetics and absolute bioavailability of neoline in Beagle dogs, and provide a theoretical basis for further study. Ethyl acetate was used for liquid-liquid extracting after 10% ammonia alkalizing. The method of UPLC-Q-TOF-MS was established for the determination of neoline plasma concentrations. Beagle dogs were orally or intravenously administered with neoline for pharmacokinetic and absolute bioavailability study. Good linear relationship of neoline was found over the range of 0.1-4 mg x L(-1) (R2 = 0.9982) and 2-100 microg x L(-1) (R2 = 0.9945). Intra-and inter-day precision, expressed as the relativestandard (RSD) were less than 5.0%. Accuracy, expressed as the relative error (RE) was within 90.0%-115%. The recovery of neoline in dog plasma was more than 80%. After 6 mg x kg(-1) for ig and 1 mg x kg(-1) for iv administration of neoline, the main pharmacokinetic parameters were analyzed with Winnonlin software. t(1/2) were (313.88 +/- 63.18), (236.33 +/- 229.84) min, and AUC(0-infinity) were (58,027.40 +/- 14,132.69), (473,578.02 +/- 82,333.08) min x microg x L(-1) for ig and iv administration respectively. The absolute bioavail ability was (73.15 +/- 10.29) %. The method of UPLC-Q-TOF-MS described in the report was sensitive, reliable and specific, and suitable for pharmacokinetic study of neoline in Beagle dog. The high absolute bioavailability of neoline in dog suggested good absorption of neline which was worth of further investigation.
Aconitine ; analogs & derivatives ; chemistry ; pharmacokinetics ; Animals ; Biological Availability ; Dogs ; Drug Stability ; Female ; Male

Objective To evaluate the effects of different concentrations of remifentanil on myocardial monophasic action potential (MAP) in isolated rabbit hearts.Methods Adult rabbits of both sexes,weighing 2.0-2.5 kg,were used in the study.Their hearts were excised,and retrogradely perfused with oxygenated K-H solution saturated with 95％O2-5％CO2 at 37 ℃ in a Langendorff apparatus.Twenty-four isolated hearts were randomly divided into 4 groups (n =6 each) using a random number table:control group (group C) and 3 different concentrations of remifentanil groups (group R1-3).After 15 min of stabilization,K-H solution was continuously perfused for 60 min in group C,and K-H solution containing 12,25 and 50 ng/ml remifentanil was continuously perfused for 60 min in R1,R2 and R3 groups,respectively.At 15 min of stabilization,and 15,30 and 60 min of perfusion with K-H solution,the heart rate,and the maximal velocity and amplitude of the MAP in the three layers of the left ventricular anterior wall were recorded,and the action potential duration at 90％ repolarization and transmural dispersion of repolarization (TDR) were calculated.Results Compared with group C,the heart rate was significantly decreased,and the action potential duration at 90％ repolarization and TDR were significantly prolonged at 15,30 and 60 min of perfusion in R1-3 groups (P＜0.05).Compared with C and R1 groups,the maximal velocity and amplitude of MAP were significantly decreased at 15,30 and 60 min of perfusion in R2 and R3 groups (P＜0.05).Conclusion Low-concentration remifentanil induces heart block through increasing TDR,however,high-concentration remifentanil induces heart block through inhibiting myocardial MAP depolarization and increasing TDR in the isolated rabbit hearts.

Objective The combination of vasopressin and epinephrine has long been thought to be more effective then epinephrine alone in cardiopulrnonary resuscitation (CPR), evidence is not enough to make such a clinical recommendation. This meta-analysis compared the efficacy of vasopressin and epinephrine used together versus epinephrine alone in cardiac arrest (ca) in order to verify the truth. Method MEDLINE and EMBASE were searched for the data of randomized trials in comparing the results of co-administration of vasopressin and epinephrine with epinephrine alone in adults with cardiac arrest. The primary outcome was the restoration of spontaneous circulation (ROSC). Results Six randomized trials in 485 articles were analyzed. We failed to get the results supporting the effectiveness of this combination therapy, except for the rate of 24 hours survival (OR: 2.99,95%CI:1.43 ~ 6.28). No evidence supported that vasopressin combined with epinephrine was better than epinephrine alone in ROSC. Conclusions This systematic review indicates the combination of vasopressin and epinephrine is better for the rate of 24 hpurs survival in only 122 patients. Further investigation is needed to support the use of combination therapy for cardiac arrest.