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Objective To evaluate the effect of isoflurane on the expression of hippocampal ubiq-uitin C-terminal hydrolase-L1(UCH-L1)mRNA in aged rats. Methods Thirty-six pathogen-free healthy male Sprague-Dawley rats, aged 20 months, weighing 500-700 g, were divided into 2 groups using a ran-dom number table: control group(group C, n=12)and isoflurane group(group I, n=24). In group I, 2% isoflurane was continuously inhaled for 2 h. Twelve rats were selected at 24 and 72 h after stopping isoflurane inhalation(T1,2), and Y-maze test was performed to evaluate cognitive function. The animals were sacrificed after the end of Y-maze test and their hippocampi were removed for determination of UCH-L1 expression(by immuno-histochemistry)and UCH-L1 mRNA expression(by real-time polymerase chain reaction). Results Compared with group C, the total number of training achieving the standard was sig-nificantly increased at T1(P<001 or 005), and the expression of UCH-L1 mRNA was down-regulated, and no significant change was found at T2in group I(P>005). Conclusion The mechanism by which isoflurane induces cognitive decline may be related to down-regulating the expression of UCH-L1 mRNA in hippocampal tissues of aged rats.
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Objective To analyze the clinical features of melioidosis spleen abscess.Methods A retrospective analysis of 26 cases with melioidosis spleen abscess at Hainan People′s Hospital between October 2002 and March 2015 was performed.Data with general conditions, clinical characteristics, imaging features, treatment and outcome were all extracted and analyzed.Results High fever (100.0%) and splenomegaly (73.1%) were the main clinical symptoms and signs.Laboratory examinations showed that white blood cell and neutrophil percentage increased, with a mean value of 12.6×10.9/L and 0.86, respectively.88.5% cases had diabetes mellitus which was the main underlying disease.Apart from spleen abscess, pulmonary infection (73.1%) and liver abscess (38.5%) were the majority.Imaging showed multiple small abscess (92.3%).All patients had at least one positive blood culture of Burkholderia pseudomalleiand were treated with imipenem, ceftazidime and sulfamethoxazole alone or in combination.Hospitalization days ranged between 8 to 65 days with the mean of 29.5 days.Twenty-three cases (88.5%) were cured, the remaining 3 cases (11.5%) abandoned treatment and were all lost for follow-up.Conclusions Melioidosis should be suspected in patients from epidemic areas, who have diabetes and imaging shows spleen abscess and other organ infections including pulmonary infection and liver abscess.Microbiological culture is needed immediately.
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OBJECTIVE@#To investigate the value of liver perfusion imaging of 256-slice CT in evaluating the compensated and decompensated cirrhosis. @*METHODS@#A total of 20 patients with liver cirrhosis, who were confirmed by liver biopsy, clinical symptoms and imaging, were selected from December 2012 to June 2014. According to the results of liver biopsy and the Child-Pugh classification, the patients were divided into a compensated cirrhosis group (n=8) and a decompensated cirrhosis group (n=12). Eleven cases without liver and spleen diseases were served as a control group. All subjects were under the 256-CT liver perfusion (256-CTP). The data of CTP [hepatic arterial perfusion (HAP), portal venous perfusion (PVP), total liver perfusion (TLP), hepatic perfusion index (HPI)] were obtained according to liver perfusion type, and the data of CTP [liver perfusion (LP), peak enhanced (PE), time to peak (TTP), blood volume (BV)] were obtained according to general perfusion type. Spearman rank correlation was used to analyze the correlation of liver cirrhosis with perfusion parameters. The receiver operating characteristic (ROC) curve was used to predict liver cirrhosis, and the maximized Youden index was served as the optimal cutoff value, then the area under curve, sensitivity and specificity were calculated. @*RESULTS@#The PVP, TLP and PE values in the control group, the compensated cirrhosis group and the decompensated cirrhosis group were (76.63±37.26), (38.78±16.13) and (36.14± 15.31) mL/(100 mL·min); (98.48±43.58), (55.63±14.47) and (54.41±20.81) mL/(100 mL·min); (55.62±18.25), (44.11±5.79) and (41.08±7.74) HU, respectively, showing a gradual downward trend and a significant difference among the 3 groups (all P 0.05). PVP, TLP, PE and LP were negatively correlated with the process of liver cirrhosis (r=-0.592, -0.567, -0.409, -0.569, all P<0.05), but HPI and TTP were positively correlated with the process of liver cirrhosis (r=0.434 and 0.538, both P<0.05). @*CONCLUSION@#256-CTP could provide useful information for the assessment of liver cirrhosis by measuring a plurality of perfusion parameters. The hepatic microvascular changes in patients with liver cirrhosis could be quantitatively assessed by perfusion CT. TTP shows high efficiency in prediction of liver cirrhosis and decompensated liver cirrhosis.
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Humans , Case-Control Studies , Liver Cirrhosis , Diagnosis , Perfusion Imaging , Sensitivity and Specificity , Tomography, X-Ray ComputedABSTRACT
@#ObjectiveTo study the effect of XGS Capsule on the femoral head necrosis in mouse and rat. MethodsThe animal model of femoral head necrosis was caused with tretinoin per os. The free locomotive activity, bone density and pathological changed were observed. ResultsIn the model mouse, the free locomotive activity decreased significantly(P<0.01). In the model rat, the density and weight of the bone also decreased(P<0.01). The defects of cartilage, disorders of ossification and dead bone were observed in the femoral head joint. After treatment with XGS Capsule for 5 weeks, these pathological changes significantly improved. Conclusions XGS Capsule was effective in treating the femoral head necrosis.