BACKGROUND:According to the theory of Traditional Chinese Medicine, stimulating certain acupoints of the body after exercise may improve its antioxidant capacity, but different acupoints have different effects. OBJECTIVE:To compare the effect of different acupuncture combinations on the antioxidant capacity of myocardial and liver tissues in rats after exhausted swimming exercise, and screen out the optimal acupoint combination for exercise-induced fatigue. METHODS:Seventy Sprague-Dawley male rats were divided into five groups: control group (n=10), model group (n=15),Sanyinjiao +Zusanli group (n=15),Shenshu +Zusanli group (n=15),Dazhui+Zusanli group (n=15). Except the control group, rats in the other four groups were subject to exhausted swimming. In the three acupuncture groups, rats were given acupuncture at corresponding acupint combinations at 15 minutes after exercise. RESULTS AND CONCLUSION:Compared with the control group, the activities of superoxide dismutase and glutathione peroxidase in the myocardial and liver tissues were significantly reduced in the model group, while the malonaldehyde content in cardiac muscle was significantly increased. Compared with the model group, the activities of superoxide dismutase and glutathione peroxidase in the cardiac muscle were significantly increased inSanyinjiao +Zusanli group, the superoxide dismutase in liver tissue was significantly increased inShenshu+Zusanli group, the malonaldehyde content in the myocardial tissue was significantly decreased in Sanyinjiao +Zusanli group and Dazhui +Zusanligroup, the malonaldehyde content in the liver tissue was significantly decreased in Sanyinjiao +Zusanligroup. Different acupuncture combinations have different effects on the activities of superoxide dismutase and glutathione peroxidase, as wel as the malonaldehyde content in the myocardial and liver tissues of fatigued rats. Acupunture could increase the antioxidant ability in cardiac muscle of rats and the best combination might beDazhui+Zusanli; acupoint combinations ofShenshu +Zusanli andSanyinjiao +Zusanli are specific for liver tissue.

Objective To investigate the protective mechanism of hydrogen sulfide(H2S) on inflammatory and oxidative damage of myocardium due to stress after amputation,and explore the relationship between H2S signal pathway and inflammatory and oxidative damage.Methods Twenty-eight adult male Wistar rats(weighing 260-300g) were randomly divided into 4 groups(7 each):control group,trauma group,NaHS group and PPG group.Rat model of traumatic stress was established in the rats in the 3 latter groups,and the animals were sacrificed 6 hours after modeling.The rats in control group were also sacrificed at the same time point.Rats in NaHS and PPG group respectively received intraperitoneal injection of NaHS(28?mol/kg) or PPG(50mg/kg).The level of H2S in plasma was measured by sensitive sulphur electrode,the activity of CSE in myocardium was determined by methylene blue method,myeloperoxidase(MPO) in plasma and myocardium was measured with ultraviolet spectrophotometry,and malondialdehyde(MDA) in plasma and myocardium was measured by TBA method.Results Compared with the control group,the content of H2S in plasma decreased,MPO and MDA in plasma and myocardium increased 6 hours after amputation(trauma group).Compared with the trauma group,the contents of H2S and MPO in plasma and the activity of CSE in myocardium increased,MDA in plasma and MPO and MDA in myocardium decreased in NaHS group,while the contents of H2S and MPO in plasma and the activity of CSE in myocardium decreased,MDA in plasma and MPO and MDA in myocardium increased in PPG group.Conclusion Inflammatory and oxidation injuries may occur in rat's myocardium after amputation,and H2S can offer a protective effect on myocardium by decreasing inflammatory and oxidative damage.

BACKGROUND:Amputation is a special type of trauma. Mechanism of trauma-induced damage to the liver and the effects of hydrogen sulfide (H 2 S) on the liver remain unclear.
OBJECTIVE:To explore the mechanism of hepatic damage in rats of postoperative amputation, and how H 2 S exerts effects on liver function.
METHODS:Wistar rats and Sprague-Dawley rats were equal y and randomly divided into normal group, postoperative 6-, 12-, 24-and 72-hour groups, sodium hydrosulfide (NaHS) group, and propargyl glycine group, as wel as normal group, postoperative 6-hour group, HaHS group, and propargyl glycine group. Except the normal group, the structure 1.2-1.4 cm above the left knee was completely transected in rats of other groups. Blood vessels were ligated, and then left femoral vein and femoral artery were cut to establish rat models of amputation in the left hind limb. In the NaHS and propargyl glycine groups, 28 μmol/kg NaHS and 50 mg/kg propargyl glycine were intraperitoneal y injected immediately after amputation.
RESULTS AND CONCLUSION:Compared with the normal group, traumatic changes in rat liver cel s and mitochondrial structure were seen, and plasma and liver myeloperoxidase, malondialdehyde, H 2 S/cystathionineγ-lyase levels, liver mitochondrial respiratory control rate, membrane potential and ATP activity were significantly lower in the postoperative 6-hour groups (P<0.05). After NaHS intervention, H 2 S/cystathionineγ-lyase level and above indicators were significantly higher in the postoperative 6-hour groups (P<0.05), but plasma transaminase did not significantly alter (P>0.05). After treatment with propargyl glycine, above indicators except mitochondrial indexes were further decreased, and transaminase was significantly reduced (P<0.05). These findings suggest that H 2 S can reduce lipid peroxidation, inflammatory reaction, and make the mitochondrial function improved significantly, but did not reduce the damage of liver function in rat models after amputation.

Purpose To investigate the significance of PET/CT in differential diagnosis of incidental thyroid benign or malignant lesions with high fluorodeoxyglucose (FDG) uptake.Materials and Methods Forty cases with focal high FDG uptake lesion in thyroid accidently detected by PET/CT were retrospectively collected. The subjects were dived into physiological uptake group (n=18), benign lesion group (n=16) and malignant lesion group (n=6) according to the pathology or follow-up examinations. The average SUVmax of different groups was analyzed, and ROC curve was used todetect benign or malignant lesions.Results The average SUVmax was 3.7±1.1 in physiological uptake group, 4.9±2.3 in benign lesion group and 9.5±4.8 in malignant lesion group. Significant difference was noticed among the three groups. The average SUVmax in malignant lesion group was higher than that of the other two groups with statistical difference (P<005). No significant difference was observed between physiological uptake group and benign lesion group (P>0.05). ROC analysis showed that the sensitivity and specificity for thyroid malignant tumor were 100.0% and 87.2% at SUVmax of 8.5.Conclusion18F-FDG PET/CT plays an important role in differentiating benign lesions of thyroid from malignance, but it is not helpful to identify benign lesions from physiologic uptake.

OBJECTIVE To investigate the distribution and resistance of commonly encountered pathogens,and provide reference of antimicrobial agents.METHODS For the clinical specimens during the last three years,flora identification and bacteriostatic test were operated with Microscan WalkAway-40.RESULTS Gram-negative bacteria were 252,507 and 742 strains,Gram-positive bacteria were 142,166,and 243 strains,fung were 0,26,and 229 strains from 2002 to 2004,respectively,the most commonly encountered Gram-negative bacteria were Escherichia coli,Klebsiella pneumoniae,Pseudomonas aeruginosa,Enterobacter cloacae,and Acinetobacter baumannii;the Gram positive bacteria were Staphylococcus aureus,S.epidermidis,S.haemolyticus,and Enterococcus.CONCLUSIONS It is important for reasonable drug application to know the distribution and resistance of commonly encountered bacteria.

OBJECTIVE To investigate the antibiotics resistance and the presence of resistant gene of Staphylococcus aureus isolated from nosocomial infection patients in our hospital.METHODS Antibiotic susceptibility tests were conducted by Microscan WalkAway-40,the antibiotics resistant genes of aac(6')/aph(2″),aph(3')-Ⅲ,ant(4',4″),TEM,tetM,macA,erm and qacA/B of 16 MRSA and 24 MSSA strains were detected by PCR.RESULTS The percentage of MRSA in this investigation was 59.4%,the positive rate of ?-lactamases of 192 S.aureus strains was 98.9%,resistant rate of S.aureus to ?-lactam antibiotics was 52.1-99.0%,and to erythromycin,clindamycin,clarithromycin,ciprofloxacin,norfloxacin,gentamicin and tetracycline was 52.1%,78.1%,85.5%,56.3%,61.1%,55.2%,and 69.8%,respectively,but to nitrofurantoin and sulfamethoxazole/trimethoprim were relatively lower(1.1% and 10.5%) than the others.VISA,h-VISA and VRSA were not measured.To the most of antibiotics,the resistant rate of MRSA was higher than MSSA.The presence of resistant gene of MRSA and MSSA was different.There was more positive percentage of gene in MRSA than in MSSA.CONCLUSIONS Antibiotics resistance of S.aureus isolated from nosocomial infection patients in our hospital is severe.Compared to MSSA,MRSA has higher antibiotic resistant rate and more complicated drug-resistant mechanism.Some measures should be done to reduce the antibiotic resistance of S.aureus.

OBJECTIVE To investigate the staphylococcal cassette chromosome mec(SCCmec) genotype characteristics and antibiotic-resistant genes in meticillin-resistant Staphylococcus aureus(MRSA) isolated from Lianyungang.METHODS The SCCmec of clinically isolated MRSA strains were genotyped with a novel multiplex PCR strategy reported by Zhangetal.Antibiotic-resistant genes of aac(6′)/aph(2″),aph(3′)Ⅲ,tetM,erm,TEM,and ant(4′,4″) were analyzed by traditional PCR.RESULTS The isolates were almost SCCmec Ⅲ positve,only one isolate couldn′t be typed.The positive rates of aac(6′)/aph(2″),aph(3′)Ⅲ,tetM,and erm were 98%,46%,72% and 86%,respectively.TEM and ant(4′,4″) tested were all negative.CONCLUSIONS Almost all genotypes of MRSA prevailing in Lianyungang carry the SCCmec Ⅲ gene.There are high positive percentages of antibiotic-resistant genes of aac(6′)/aph(2″),aph(3′)Ⅲ,tetM and erm in the isolates.The novel multiplex PCR strategy recommended by Zhang et al can be applied into genotyping study of MRSA SCCmec effectively.

Blue laser imaging (BLI) is a new endoscopic system equipped with the laser beam emitting two different wavelengths.It produces bright and high resolution images for observation of microvascular and microsurface patterns of esophageal and gastric mucosa, helping the diagnosis of early upper gastrointestinal cancer.Compared with the existed endoscopic techniques, BLI shows its unique advantages.In this article, advances in application of BLI in diagnosis of early upper gastrointestinal cancer were reviewed.

To investigate the effects of gensenoside Rg1 on expressions of phosphorylated tau protein (P-tau), protein phosphatase 2A (PP2A) and tau protein in Alzheimer's disease-like tau phosphorylation rat brain slices, and to explore the mechanisms of gensenoside Rg1 in inhibiting tau phosphorylation.

Objective To evaluate the application value of the one-stepdiabetes education management system in clinic. Methods The “one-step” diabetes education management system was construct.80 newly diagnosed patients with type 2 diabetes mellitus were selected and randomly divided into the control group and the experimental group with 40 patients in each group.The patients in the experimental group received “one-step”diabetes education management system by diabetes specialist nurses,while patients in the con-trol group received routine diabetic education.The fasting blood glucose (FBG),HbAlc,medical compliance behaviors and other indices were compared between two groups. Results FBG,HbAlc and medical compliance were better,and the risk score of complications was higher in the experimental group than those of the control group,there were significant differences between them. Conclusions Application of “one-step”diabetes education management system in treatment and nursing of patients shows maneuverability and practicality.It has clinical application value and deserves to be spread.