OBJECTIVE:To study the effects of taurine on oxidative stress and calcium overload induced by cerebral cortex contusion.METHODS:SD rats were randomly divided into normal control group,brain contusion model group,taurine groups(high dose,middle dose and low dose respectively),and nimodipine group.After being fed with corresponding drugs for7days,all rats were subjected to modeling by brain contusion.For intracellular calcium detection,rats were sacrificed2h after modeling,and the brain slices were prepared to fluorescence labeling and confocal microscopy detection.For the detection of oxidative stress,rats were sacrificed24h after modeling,the cortex of contusion side was homogenated and then the activity of superoxide dis?mutase(SOD)and content of malondialdehyde(MDA)were detected through biochemical method.RESULTS:Compared with model group,all taurine groups were shown to have markedly less MDA and intracellular calcium content,and the high dose group had markedly stronger SOD activity.CONCLUSION:Taurine is effective in counteracting the oxidative stress and calcium overload caused by brain contusion.

Objective To explore effect of fetal lymphocyte on pathogenesis of intrahepatic cholestasis of pregnancy(ICP).Methods Twenty pregnant women with ICP and 20 normal pregnant women were enrolled in the study.The single mixed lymphocyte culture/reaction(MLC/MLR)was conducted using inactive lymphocyte obtained from maternal peripheral blood and lymphocyte of cord blood from fetus.Antigen-induced-lymphocyte-proliferation-reaction was used for dermic soluble antigen and decidual soluble antigen obtained from maternal blood and cord blood from fetus.The intense of proliferation was calculated and compared between normal and ICP-complicated pregnancies.Results(1)The level of intense of proliferation of fetal lymphocyte was significantly increased in ICP group 2.75?0.36 than those of normal control group 1.45?0.19 in single mixed lymphocyte culture(P＜0.05).(2)The level of intense of proliferation of fetal lymphocyte was significantly increased in ICP group 1.45?0.19 than those of normal control group 0.67?0.24 in decidual soluble antigen induced lymphocyte proliferation reaction(P＜0.05). (3)The level of intense of proliferation of fetal lymphocyte was significantly increased in ICP group(1.22?0.44)than those of normal control group(0.66?0.27)in dermic soluble antigen induced lymphocyte proliferation reaction.Conclusions(1)The fetal lymphocyte may be one of the effector cells in pathogenesis of ICP.(2)The disturbance of fatal-maternal immune-tolerance is one of the important mechanisms underlying ICP.

Objective To develop and evaluate a porcine model for training the single needle running suture method of laparoscopie urethrovesical anastomosis(LUA). Methods Twenty minipigs with mean weight of 30kg were general anaesthetized with Sumianxin solution 0. 1 ml/kg intramuscularly. Pneumoperitoneum was created by insufflation of carbon dioxide by a veress needle inserted through the umbilicus. One 10mm port and two 5mm ports were positioned after the establishment of pneumoperitoneum. The intestine was used as "bladder". The procedures were completed with the single needle running suture method of laparoscopic urethrovesical anastomosis. Six trainees performed the LUA procedure based on the models during a laparoscopic training course, following the technique used in the operation room. The learning curve was analyzed by operative time. Results The porcine model for laparoscopic training was established successfully and 3 LUAs could be performed on each pig. Each trainee performed 10 LUAs based on the models during the training course of laparoscopic urology. The operative time declined from (55.3±10. 4)min initially to (22.4±4.8)min (P＜0. 01) after the training course. At the end of training, all trainees could accomplish a watertight LUR procedure on the model. Conclusions The establishment of the training model is feasible. The trainees could acquire the skills necessary to perform LUA in vivo based on this model. The model provides a platform for training the basic techniques of LUA procedures.

Adult ; Blast Injuries ; therapy ; Explosions ; Humans ; Male ; Multiple Trauma ; therapy

OBJECTIVETo study the clinical features and diagnosis of intrahepatic cholestasis of pregnancy (ICP).

METHODSDuring the last 10 years 1241 cases of ICP stayed in our hospital. Their clinical data were retrospectively reviewed.

RESULTS5.2% of all the maternity patients had ICP. It occurred more in winter and 3.5% of ICP occurred in multiple pregnancies. The recurrence rate of ICP was 30.2%. On the average, it occurred at gestational week 32.6. Skin pruritus was the characteristic manifestation and the presenting symptom in 1201 patients (96.8%). The other presenting features included elevated serum ALT and AST (2.3%), jaundice (8 patients), diarrhea (3 patients), deep yellow urine (2 patients) and right upper abdominal pain (1 patient). The serum transaminases levels were elevated, of which 60% were between 50-200 IU/L. Serum total bile acid (TBA) levels were elevated in 82.4% of the patients and bilirubin levels in 33.4%. The elevated bilirubin levels were 30 to 90 micromol/L in 85% of those patients with this condition, and it was never higher than 170 micromol/L.

CONCLUSIONThe basic diagnostic points of ICP are pruritus and abnormal liver function characterized by increased transaminases and TBA. Therefore paying attention to typical pruritus and other atypical features such as elevated serum transaminases, jaundice, diarrhea, deep yellow urine and right upper abdominal pain during antenatal care is important for an early diagnosis of ICP.

Adult ; Cholestasis, Intrahepatic ; Female ; Humans ; Pregnancy ; Pregnancy Complications ; Retrospective Studies ; Young Adult

AIMTo study the chemical constituents of Sargentodoxa cuneata.

METHODSTo isolate compounds with chromatography technology and to elucidate their structures by spectral analysis.

RESULTSTen phenolics were isolated from Sargentodxa cuneata and their structures were determined as 1-O-(vanillic acid )-6-O-( 3", 5"-dimethoxy-galloyl)-beta-D-glycoside (I), (-)-epicatechin (II), phydroxyphenylethanol ferulate (III), chlorogenic acid (IV), methyl chlorogenate (V), apocynin (VI), vanillic acid (VII), protocatechuic acid (VIII), 3,4-dihydroxy-phenylethanol (IX), tyrosol (X).

CONCLUSIONCompound I is new compound, compound III-VI and VIII-X were isolated from Sargentodoxa cuneata for the first time.

Acetophenones ; chemistry ; isolation & purification ; Chlorogenic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Glycosides ; chemistry ; isolation & purification ; Hydroxybenzoates ; chemistry ; isolation & purification ; Magnoliopsida ; chemistry ; Molecular Conformation ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry ; Vanillic Acid ; analogs & derivatives ; chemistry ; isolation & purification

OBJECTIVETo detect the specific mutations in rpoB gene of Mycobacterium tuberculosis by oligonucleotide microarray.

METHODSFour wild-type and 8 mutant probes were used to detect rifampin resistant strains. Target DNA of M. tuberculosis was amplified by PCR, hybridized and scanned. Direct sequencing was performed to verify the results of oligonucleotide microarray.

RESULTSOf the 102 rifampin-resistant strains 98 (96.1%) had mutations in the rpoB genes.

CONCLUSIONOligonucleotide microarray with mutation-specific probes is a reliable and useful tool for the rapid and accurate diagnosis of rifampin resistance in M. tuberculosis isolates.

Antibiotics, Antitubercular ; pharmacology ; Bacterial Proteins ; genetics ; metabolism ; DNA-Directed RNA Polymerases ; Drug Resistance, Bacterial ; genetics ; Gene Expression Regulation, Bacterial ; Mutation ; Mycobacterium tuberculosis ; drug effects ; genetics ; metabolism ; Oligonucleotide Array Sequence Analysis ; Rifampin ; pharmacology

OBJECTIVETo study the molecular types of Staphylococcus aureus isolated from a severe food-poisoning and to trace the possible strains.

METHODSReal-time PCR was applied to detect nuc gene as a specific marker for S. aureus, mecA gene encoding methicillin resistance and 5 other genes encoding staphylococcal enterotoxins (sea, seb, see, sed, see). Isolates were also performed with 16S rRNA oligonucleotide sequence analyzing by DNAStar MegAlign 5.0 software and pulse-field gel electrophoresis (PFGE) by BioNumerics Version 4.0 software.

RESULTSThe nuc gene was detected from the 10 isolated strains, sea and seb genes were detected from 7 strains. There were 4 16 S rRNA types and 5 PFGE types found from all the strains.

CONCLUSIONSThree relative S. aureus strains were involved in the severe food-poisoning at least. Molecular subtyping might give a molecular epidemiological evidence and support the source tracing of an outbreak.

Bacterial Typing Techniques ; China ; Electrophoresis, Gel, Pulsed-Field ; Enterotoxins ; Humans ; Staphylococcal Food Poisoning ; epidemiology ; microbiology ; Staphylococcus aureus ; classification ; genetics ; isolation & purification

Objective To explore the effect of remind-to-move treatment on upper limb motor function,activities of daily living and participation in patients with subacute stroke. Methods From February,2016 to October,2017,45 patients with mild to medium upper limbs dysfunction after stroke were randomly assigned to control group(n=23)and experimental group(n=22).The control group accepted rou-tine occupational therapy,while the experimental group wore a wristwatch on the hemiplegic forearm to encour-age the predetermined training programs,for three weeks.They were measured with Fugl-Meyer Assessment-Up-per Extremity(FMA-UE),Function Independence Measurement(FIM),Motor Activity Log(MAL),and Stroke Impact Scale(SIS)before and after treatment. Results Both groups improved in part of the scores of three scales after treatment(P<0.05),and improved more in the experimental group than in the control group in scores of FMA-UE and FIM,and some sub-scores of MAL and SIS(t>1.183,P<0.05),with no significant difference in other indexes(P>0.05). Conclusion Remind-to-move treatment can promote the recovery of upper limb motor function,activities of daily living and participation in the patients with subacute stroke.

Objective To explore the establishment of a rat model of acute radiation-induced liver injury and sig-nificance of the dynamic changes of TGF-β1 expression.Methods Forty healthy 6-week old male SD rats were randomly divided into model group (n=30) and control group (n=10).The right liver of rats in the model group was given a single dose of 25 Gy 6 MV X-ray irradiation.Histopathological examination using HE staining and transmission electron microsco-py were conducted to observe the liver pathological changes in rats at 3, 5, and 10 days after irradiation, serum TGF-β1 was detected, and relevant indicators of liver function ( ALT, AST, ALP) were determined.Statistical analysis was per-formed using SPSS 17.0 software.Results At 3, 5 and 10 days after irradiation, early pathological changes in the liver cells were observed by electron microscopy, the expression of TGF-β1 was gradually increased with the time prolongation, and significant differences were found between the model group and the control group at different time points (P<0.05). The light microscopic observation of liver tissues did not show significant differences between the control group and model group.The liver ALT, AST, ALP at different time points did not show significant differences between the two groups ( P>0.05).Conclusion Electron microscopy can be used to evaluate the early changes of radiation-induced liver injury, pri-or to the alterations visible by routine light microscopy.TGF-β1 can be used to predict the degree of radiation-induced liver injury, and may be used as a sensitive serum cytokine in predicting the degree of radiation-induced acute liver injury.