Obiective To observe the effects of carbamazepine on morphology and glial fibrillary acidic protein(GFAP)expression of astrocytes in hippocampus of Sprague-Dawley rats.Methods Astrocytic expression was observed with GFAP immunohistochemical staining.Results Compared to control group,GFAP immunoreactivity and the number of GFAP-positive astrocytes were significantly increased after 3 months of carbamazepine administration.Conclusion The changes of astrocytic expression induced by carbamazepine are time-dependent.

Objective To observe changes of expression level of HSP70 protein in rat hippocampus after exposure to +Gz of different magnitudes and to investigate the machanism of HSP70 protein induced by +Gz exposure.Method One hundred rats were divided into: control group,+2 Gz group,+6 Gz group and +10 Gz group.The experimental rats were exposed to +2 Gz,+6 Gz and +10 Gz for 3 min respectively.The rats were killed 6 h,1 d,2 d,4 d,6 d after exposure and brain specimens were made for examination under microscope.The changes of HSP70 protein expression level were determined with immunohistochemical technology.Result The HSP70 protein expression level in the 3 experimental groups were significantly higher than that in control group.It began to rise 6 h after exposure,reached the peak after 1 d,and resumed to normal 6 d after exposure.The expression level was the highest in +6 Gz group and the lowest in +10 Gz group.Conclusion +Gz exposure can induce obvious changes of HSP70 protein expression level and the most prominent changes are found in rats after exposure to +6 Gz group.

Objective To construct the eukaryotic expression vector for human hypoxia inducible factor-1? gene (pSNAV-HIF-1?), and to investigate the apoptosis and intracellular calcium concentration of the transfected A?25-35 induced hippocampal neurons of primary culture. Methods Human hypoxia inducible factor-1? gene from pBSKhHIF1?T7 was inserted into pSNAV2.0 by the method of gene recombination, then the constructed vector was transfected into hippocampal neurons of primary culture and followed by A?25-35 for treatment. Empty pSNAV2.0 vector was treated the same way as pSNAV-HIF-1? as a control. The expression level of HIF-1? protein was assayed by Western blotting. Apoptosis was detected by flow cytometry. Intracellular calcium concentration was determined by laser scanning confocal microscopy with Fluo-3/AM as the fluorescent dye. Results It was shown that pSNAV-HIF-1? was successfully constructed by restriction enzyme digestion, PCR and DNA sequencing. The expression level of HIF-1? protein was significantly increased in transfected hippocampal neurons of primary culture (P

OBJECTIVE:To prepare buspiron hydrochloride sustained-release tablets and to study its release characterization in vitro and the factors affecting drug release.METHODS:Buspiron hydrochloride sustained-release tablets were prepared with hydroxypropyl methylcellulose(HPMC)as hydrophilic gel-matrix material and ethylcellulose(EC)as retarder by wet granulation.The impacts of releasing transmitters,contents of HPMC and EC,and viscosity on the drug release in vitro of the tablets were studied.RESULTS:For the prepared sustained release tablets,the 24h drug release amount was over 90%,and the drug release curve conformed to Higuchi equation.The more contents of HPMC and EC and the higher viscosity of HPMC in the tablets,the slower drug release velocity was obtained;but the viscosity of EC and the releasing transmitters had no significant impacts on the drug release velocity.CONCLUSION:With HPMC and EC as matrix materials,the 24h continuous drug release is available for buspirone hydrochloride sustained-tablets.

Excessive iron accumulation in the brain occurs in Alzheimer' s disease (AD) with oxidative stress,amyloid deposition,tau phosphorylation,and neuronal cell cycle regulatory failure,leading to apoptosis.Therefore,there is a direct link between iron metabolism and AD pathogenesis. The present review elaborates on high brain iron in etiology of AD and the development of iron-chelating therapy for AD,aiming at preventing or slowing down disease evolution.

Objective: To establish an analytical method for serum prolactin (PRL) based on the photoinduced chemiluminescence technology, and evaluate its performance. Methods: A pair of PRL monoclonal antibodies were labeled with luminescent nanospheres and biotin respectively, and the double antibody sandwich detection system was formed with the serum prolactin and streptavidin-labeled photosensitive microspheres (universal photosensitive solution) under homogeneous conditions. The performance index and correlation of the detection system were evaluated. Results: The precision of intra-assay and within-day (coefficient of variation) of the developed assay were 4.60% and 5.25%, respectively. The functional sensitivity was 2.48 μIU/mL, and its reportable results were ranged from 2.48 to 4 240 μIU/mL. The recovery rates of different PRL calibrators (42.2, 424, 4 240 μIU/mL) added to human sera were ranged from 96.25% to 102.93%. There was no interference from bilirubin＜20 mg/dL, hemoglobin＜200 mg/dL, triglyceride＜3 000 mg/dL and biotin＜20 ng/mL. Also, the light-initiated chemiluminescent assay for PRL (PRL-LICA) correlated well with Beckman Unicel Dxi 800 Access 2. Conclusions LICA showed effective performance for detecting PRL in human serum, and it could meet the basic requirements of clinical diagnosis.

Objective To elucidate the clinicopathological characteristic, differential diagnosis, treatment and prognosis of systemic amyloidosis. Methods An inpatient diagnosed as systemic amyloidosis was analyzed for clinical and pathological features as well as laboratory findings. The related literature was reviewed. Results The patient was confirmed to have amyloidosis of the muscle. Muscle involvement was the most prominent and first manifestation, and the patient had widespread visceral involvements, which included cardiovascular system, kidney, respiratory as well as gastrointestinal tracts and tongue. The biopsy of the muscle, mucosa of stomach and intestine, and cutaneous tissue revealed amyloid material deposited in the skeletal and smooth muscle as well as vessel walls. Conclusion Amyloid myopathy is a rare manifestation in systemic amyloidosis. Skeletal muscle weakness and stiffening may be an important clue to the diagnosis of systemic amyloidosis.

ObjectiveTo investigate the expression and clinical value of coiled-coil domain-containing protein 34 (CCDC34) in hepatocellular carcinoma (HCC), and to predict the role of CCDC34 in the development and progression of HCC. MethodsThe datasets of HCC were downloaded from The Cancer Genome Atlas (TCGA) to obtain the expression profile and clinical information of the CCDC34 gene. The bioinformatics method was used to analyze the expression of CCDC34 in HCC, its correlation with clinicopathological parameters, and its influence on prognosis. The gene set enrichment analysis (GSEA) was used to predict the possible pathways regulated by the CCDC34 gene in HCC. The independent samples t-test and the paired t-test were used for comparison of continuous data between two groups; the Kaplan-Meier method and the log-rank test were used for survival analysis; the Cox proportional-hazards regression model analysis was used to investigate the influencing factors for prognosis. P＜0.01 was the standard for judging significant enrichment in GSEA, and the false discovery rate was ＜0.05. ResultsIn TCGA database, CCDC34 was highly expressed in tumor tissue, and there was a significant difference in the expression of CCDC34 between patients with different TNM stages and tumor grades (t=2.118 and 3.622, P=0.035 and P＜0.001). The patients with high expression of CCDC34 had a significantly shorter overall survival time than those with low expression (χ2=21.716, P＜005). The multivariate Cox regression analysis showed that the expression of CCDC34 （HR＝2.287,95%CI:1.312-3.987）and TNM stage(HR=1.943,95%CI:1.101-3.429) were independent risk factors for the overall survival time of patients with HCC (all P＜0.05). The enrichment of 8 pathway gene sets, including base excision repair and spliceosome, was observed in the samples with high expression of CCDC34 (P＜0.01, FDR ＜0.05). ConclusionCCDC34 may play a vital role in the development and progression of HCC and thus become a new prognostic indicator and a potential therapeutic target.

Objective To explore factors influencing the prognosis of hepatocellular carcinoma (HCC) patients after hepatectomy. Methods From May 1994 to January 1998, 189 patients who underwent hepatectomy for HCC were enrolled for reviewing their clinical characteristics, treatment and prognosis. Twenty-two parameters contributing to long-term survival rate (SR) and disease-free SR were analysed. Results The 3,5-year cumulative SR of the whole group was 63%,45%, respectively. The 3,5-year SR and disease-free SR in the curative resection (CR) group ( n =162) were 67%,47% and 45%,26% respectively. Results showed that the way by which a tumor was found, tumor size, portal tumor thrombi, satellite nodule, TNM stage, cirrhosis type, recurrent and treatment, blood transfusion, differentiation grade,and CR were risk factors by individual variable analysis( P =0.0000～0.0034); A multivariable analysis showed that CR, tumor size, tumor finding mode and reoperation were significant factors associating with prognosis( P =0.0000～0.0024). Blood transfusion and type of cirrhosis were closely correlated with tumor-free survival ( P =0.0001). Conclusions Curative resection, tumor size, reoperation for recurrence were important factors for recurrence by multivariate analysis. The severity of concomittant liver cirrhosis and perioperative blood transfusion were closely correlated with postoperative tumor free survival.