Objective To study the effects of γ-aminobutyric acid (GABA) and sertraline on the cognition functions in acute stressed rats.Methods Y-type maze were used to test the cognitive function of Male SD (Sprague-Dawley) rats.They were exposed to the forced-swimming stress test,which was to make acute stress model of depression.Except control group,rats were pretreated with different doses of GABA and/or sertraline,then the time of immobility in the forced-swimming test and latency in the maze were observed individual.Results Compared with the model group[(1404.33±129.46)s] ,GABA could decrease the immobility time obviously in the forced-swimming test [(432.33±187.64) s ＞ (332.50±217.23) s,P ＜ 0.01].Otherwise the immobility time was prolonged with 0.50 g/kg GABA + 10 mg/kg sertraline (1086.17±411.80) s (P ＜ 0.05).Compared with the control group(105.00±32.18)s,the latency in the maze was prolonged remarkably in the model group (179.17±8.54) s(P＜ 0.05).Pretreatment with 10 mg/kg sertraline(100.30±21.01) s or GABA and sertraline groups (69.83±16.89) s,(86.83±13.11) s (P ＜ 0.05 or 0.01) could decrease the latency.Conclusion GABA could play its role of antagonizing acute depression.Meanwhile,pretreatment with appropriate doses of GABA and sertraline not ordy could decrease doses of two drugs but also improve the cognitive function in the acute stress rats.

Objective To study the protective effect of Acathopanax Senticosus(AS) to the neuron by toxicity of Glu.Methods With hippocampal slice in rats and histography technique,we observed the effect in OPS of ischemic hippocampal slice by Glu between AS group and no AS group,and the changes of ultrastructure in the two groups were also observed.Results In AS group OPS was decreased and disappeared after slice with Glu for 5 min,the recovery rate of OPS was 16.6%,the degree was 41.5%.There was significant difference in the two groups( P

Objective To investigate the feature and general trend of the contingent negative variation (CNV) in the aged with memory impairment (AMI) and dementia tendency in the course towards advanced dementia. Methods CNV in 69 AMI subjects (serving as the study group) and 22 healthy elderly subjects selected from well age matched (serving as the control group) were examined. Hasegawa's dementia scale for the aged (HDS) in all AMI were also examined. 2 3 years later, 22 from the study group were examined again. The wave forms and relevant indexes of CNV were observed and analyzed. Results Reaction time(RT)〔(284.3?170.6) ms vs (149.8?101.7) ms, P

With transmission electron microscopy,the endoplasmic reticulum of the parathyroid chief cells in normal and cadmium-treated golden hamsters was observed. After 1 month treatment of cadmium, there were dilated and whorl-shaped rough endoplasmic reticulum in the chief cells. After 3 and 6 months treatment of cadmium, there were concentric membranous body and paired endoplasmic reticulum in the chief cells. The mechanism responsible for the morphological change of the endoplasmic reticulum after cadmium treatment and the possible toxicologic effect were discussed.

Objective To evaluate the effect of dexmedetomidine on brain injury in the patients undergoing cardiac surgery with cardiopulmonary bypass (CPB).Methods Eighty patients of both sexes, aged 18-64 yr, with body surface area of 1.6-2.0 m2, with left ventricular ejection fraction＞30％, of American Society of Anesthesiologists physical status Ⅱ or Ⅲ (New York Heart Association Ⅱ or Ⅲ), scheduled for elective cardiac surgery with CPB, were equally and randomly divided into control group (group C) and dexmedetomidine group (group D) using a random number table.Before induction of anesthesia, dexmedetomidine was given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery in group D, and the equal volume of normal saline was given in group C.After induction and before skin incision (T0) , at 30 min after beginning of CBP (T1) , at 30 min after the end of CBP (T2) , at the end of surgery (T3) , and at 24 and 72 h after surgery (T4.5) , blood samples from jugular bulb were drawn for determination of serum concentrations of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-10, S-100β protein and neuron-specific enolase (NSE).Results Compared with group C, the serum concentrations of TNF-α and S100β at T1-3 and IL-6 and NSE at T1.4 were significantly decreased, and the serum concentrations of IL-10 at T1-4 were increased in group D (P＜0.05).Conclusion Dexmedetomidine given as a bolus of 1 μg/kg over 10 min followed by an infusion of 0.5 μg · kg-1 · h-1 throughout the surgery can reduce the brain injury in the patients undergoing cardiac surgery with CPB, and the mechanism is related to inhibited inflammatory responses.

Objective:To determine the content of ferric oxide in calamine powder. Methods:Flame atomic absorption spectrom-etry ( FAAS) was used to determine the content of ferric oxide. The determination results were compared with those of the titration method. Results:There was a good linear relationship between the absorbance and the concentration of iron within the range of 0. 5-4μg·ml-1 , the relative standard deviation of the repeatability test was 1. 2%, the average recoveries were 100. 4% and 99. 4%, the limit of quantitation and detection was 0. 081 μg·ml-1 and 0. 024 μg·ml-1 , respectively. Conclusion:The method of FAAS is ac-curate and quick with good specificity and high sensitivity, which can be used for the determination of ferric oxide in calamine powder.

Objective To identify the types of pulmonary complications after pancreaticoduodenectomy,and to discuss the prevention and management of these complications.Methods Clinical data of 165 cases of pancreaticoduodenectomy in our hospital were retrospectively analyzed.Pulmonary complications were identified,therapeutic effects were observed.Results The incidence rate of pulmonary complications was 19.4％ ( 32/165),case-fatality rate was 6.25％ (2/32),two patients died from pneumonia,respiratory failure and ARDS.Complications mainly included pneumonia 13.9％ (23/165),pleural effusion 4.2％ (7/165),atelectasis 3.6％ (6/165),pneumothorax 1.8％ ( 3/165 ),respiratory failure 2.4％ (4/165) and ARDS 1.2％ (2/165).Conclusion Pulmonary complications after pancreaticoduodenectomy are not rare,especially for pulmonary infection and most are hospital acquired pneumonia.To understand rules and particularity of respiratory physiopathological changes after pancreaticoduodenectomy is very important for patients to safely pass over the perioperative period.

Objective To investigate the clinical value in changes of serum glutamic acid decarboxylase antibody (GAD-Ab) ,islet cell antibodies(ICA) ,insulin autoantibodies (IAA) and high-sensitivity C-reactive protein (hs-CRP) and renal function in elderly type 2 diabetic patients .Methods 122 cases of endocrine inpatient in our hospital had been diagnosed with type 2 diabetes were chosen from January 2012 to December 2012 .They were divided into islet autoimmunity antibody positive group (n=21) and islet autoimmunity antibody negative group (n=101) according to the antibody test results ,Fasting C-peptide(FCP) ,2-hour postprandial C-peptide(2 h CP) ,glycosylated hemoglobin(HbA1c) ,high-sensitivity-CRP(hs-CRP) and renal function[urea (UREA) ,creatinine (Cr) ,microalbuminuria(urinary mALB) ,urinary β2-microglobulin (urinary β2-MG)]were detected .Test results were statistically analyzed and compared .Results At least one Islet autoimmune antibodies were found in 21 cases of 122 elderly patients with type 2 diabetes .The positive rate was 17 .21% .GAD-Ab was detected positive in 14 cases(11 .47% ) ,ICA was detected positive in 10 ca-ses(8 .19% ) ,IAA was detected positive in 1 case(0 .82% ) ,Two antibodies were detected positive together in 4 patients(3 .27% ) , Three antibodies were not detected positive together .The levels of hs-CRP ,UREA and Cr in Islet autoantibodies positive group were higher then in islet autoimmunity antibody negative group ,the difference was statistically significant (P<0 .05) .The levels of FCP ,2 h CP ,HbA1c ,urinary mALB and urinary β2-MG in both group ,the difference was not statistically significant (P>0 .05) . Conclusion Chronic inflammation and the appearance of islet autoantibodies are closely related to the damage of islet cell function . It has a higher value in monitoring complications and efficacy through understanding islet autoantibodies ,inflammation and changes in renal function in elderly type 2 diabetes .

Objective To assess the value of multi-slice computed tomography angiography (MSCTA) in the preoperative detection of aberrant hepatic arteries in patients scheduled to undergo pancreaticoduodenectomy.Methods Patients with pancreatic and peri-ampullary tumors were preoperatively studied using contrast-enhanced abdominal CT angiography (CTA).The results on hepatic arterial anatomy were compared with those obtained from digital subtraction angiography (DSA) and on surgical findings.Results Eighty-one patients were included into this study.DSA was carried out in 29 patients to evaluate tumor resectability,and 66 patients received surgery.Anomalous hepatic arteries were detected in 17 (21％) patients on CTA.Thirteen (16.0％) patients had a single arterial variant,and 4 (4.9％) patients had two arterial variants.One patient each was seen in the Michels type Ⅳ,Ⅶ,and Ⅷ respectively,while 2 patients each were seen in the Michels type Ⅲ and Ⅴ respectively.Five patients were diagnosed as the Michels type Ⅵ,and four as the Michels type Ⅸ.One patient demonstrated a rare variant which was not included into the Michels classification.MSCTA had an accuracy of 100％,a sensitivity of 100％,and a specificity of 100％.Regarding the traceability scores of hepatic arterial segment,there were no statistically significant differences between MSCTA and DSA.Conclusions MSCTA is an effective imaging tool to assess arterial anatomical variation around the pancreatic head.It is non-invasive,and it provides valuable information on the peri-pancre atic vascular anatomy before pancreaticoduodenectomy.

Objective To evaluate the efficacy of preoperative regional intra-arterial chemotherapy (RIAC) in the treatment of resectable pancreatic head carcinoma. Methods The clinical data of 50 patients with resectable pancreatic head carcinoma who had been admitted to the Research Institute of Pancreatic Diseases of Fudan University from December 2006 to July 2007 were retrospectively analyzed. Patients were randomly divided into2 groups (n =25 in each group): patients in group A were treated with preoperative RIAC followed by regional pancreaticoduodenectomy, and patients in group B were treated with surgical procedure routinely. The lymphatic metastases in the 50 specimens of pancreatic head carcinoma were detected by histological examination with hematoxylin and eosin (HE) staining, and lymphatic micrometastases were detected by immunohistochemical method with staining of cytokeratin AE1/AE3 in 10 specimens with negative HE staining of the lymph nodes in each group. Results There was no significant difference in the incidence of complications, the length of hospital stay and the 1-, 2-year survival rates between the 2 groups (χ2 = 0.12, 2.88, P > 0.05). The incidence of positive lymph node metastasis in group A was 7.1% (52/734), which was significantly higher than 22.1% (118/532) in group B (χ2 = 60.01, P < 0.05). The incidence of lymphatic micrometastasis was 9.4% (30/319) in group A, and 9.1% (23/252) in group B, with no statistical difference between the 2 groups (χ2= 0.01, P > 0.05). Conclusions Preoperative RIAC is helpful in improving the prognosis of patients with resectable pancreatic head carcinoma by reducing the incidence of lymphatic metastasis and decreasing tumor stage.