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Lead acetate in drinking water is toxic to hippocampal tissue Measuring relative protein changes using tissue array detection

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Neural Regeneration Research 2010年第7期5卷 519-524页

作者： Xiaoqin Ha Qiang Yin Tongde Lue Bin Liu Yuebin Xu Chunjie Liu Xiaohui Yu Center for Medical Experiment Lanzhou General Hospital of Lanzhou Military Area Command of Chinese PLA Lanzhou 730050 Gansu Province China School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

BACKGROUND： Lead can cause structural changes in the hippocampus, followed by damage to learning and memory functions, but its specific mechanisms are not yet clear. OBJECTIVE： To observe long-term toxicity of high-dose lead in drinking water on hippocampal tissue in rats, and analyze the potential association of oxidative damage, cell apoptosis, and pathology. DESIGN, TIME AND SETTING： A randomized, controlled animal experiment was performed at the Center for Medical Experiment, Lanzhou General Hospital of Lanzhou Military Area Command of Chinese PLA from May 2007 to October 2008. MATERIALS; Rabbit anti Bcl-2, Bax, and inducible nitric oxide synthase （iNOS） polyclonal antibodies were purchased from Santa Cruz Biotechnology, USA. An streptavidin-peroxidase immunohistochemistry kit and concentrated DAB kit were purchased from Beijing Zhongshan Biotechnology Company Limited, China. Crystal violet was purchased from Sigma, USA. METHODS： A total of 72 Wistar rats, aged 3 months, were randomly divided into control, low-, middle-, and high-dose lead groups, with 18 rats per group. Animal models were established through free drinking water contaminated by Pb2＋ for 1, 3, and 6 months, respectively. MAIN OUTCOME MEASURES： The general toxicity of lead was dynamically observed; the levels of Pb2＋ in the blood and brain tissue homogenete were detected using atomic absorption method; pathological changes were observed using hematoxylin-eosin staining and tigroid body staining; the protein expression levels of Bcl-2, Bax, and iNOS were dynamically observed using streptavidin-peroxidase immunohistochemistry of the hippocampus. RESULTS： Lead exposure reduced autonomic activities, produced a slumped appearance, slow responses, and lusterless fur, especially in the high-dose group. The amount of ingestion and hydroposia showed a decreasing trend, especially in middle- and high-dose groups. Lead levels in whole blood and brain homogenate were higher than controls （P 〈 0.01）. Lead caus

关键词： lead exposure hippocampus injury tissue array apoptosis neurotoxicity

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Copy number changes of target genes in chromosome 3q25.3-qter of esophageal squamous cell carcinoma: TP63is amplified in early carcinogenesis but down-regulated as disease progressed

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World Journal of Gastroenterology 2005年第9期11卷 1267-1272页

作者： Chueh-ChuanYen Yann-JangChen Chin-ChenPan Kai-HsiLu PaulChih-HsuehChen Jiun-YiHsia Jung-TaChen Yu-ChungWu Wen-HuHsu Liang-ShunWang Min-HsiungHuang Biing-ShiungHuang Cheng-PoHu Po-MinChen Chi-HungLin DivisionofMedicalOncology DepartmentofMedicineTaipeiVeteransGeneralHospitalandNationalYang-MingUniversitySchoolofMedicineTaipeiTaiwanChina FacultyofLifeScience NationalYang-MingUniversityTaipeiTaiwanChina DepartmentofPathology NationalYang-MingUniversityandTaipeiVeteransGeneralHospitalTaiwanChina InstituteofMicrobiologyandImmunology NationalYang-MingUniversityTaipeiTaiwanChina DivisionofThoracicSurgery DepartmentofSurgeryTaichungVeteransGeneralHospitalTaichungTaiwanChina DepartmentofPathology.TaichungVeteransGeneralHospital andDepartmentofPathologyChung-ShanMedicalUniversityTaichungTaiwanChina DivisionofThoracicSurgery DepartmentofSurgeryTaipeiVeteransGeneralHospitalandNationalYang-MingUniversityTaipeiTaiwanChina InstituteofMicrobiologyandImmunology NationalYang-MingUniversityandDepartmentofMedicalResearchandEducationTaipeiVeteransGeneralHospitalTaipeiTaiwanChina InstituteofMicrobiologyandImmunology andInstituteofBiophotonicsNationalYang-MingUniversityTaipeiTaiwanChina

AIM: By using comparative genomic hybridization, gain of 3q was found in 45-86% cases of esophageal squamous cell carcinoma (EC-SCC). Chromosome 3q25.3-qter is the minimal common region with several oncogenes found within this region. However, amplification patterns of these genes in EC-SCC have never been reported. The possible association of copy number changes of these genes with pathologic characteristics is still not clear. METHODS: Real-time quantitative PCR (Q-PCR) was performed to analyze the copy number changes of 13 candidate genes within this region in 60 primary tumors of EC-SCC, and possible association of copy number changes with pathologic characteristics was analyzed by statistics. Immunohistochemistry (IHC) study was also performed on another set of 111 primary tumors of EC-SCC to verify the association between TP63 expression change and lymph node metastasis status. RESULTS: The average copy numbers (±SE) per haploid genome of individual genes in 60 samples were (from centromere to telomere): SSR3: 4.19 (±0.69); CCNL1: 5.24 (±0.67); SMC4L1: 2.01 (±0.16); EVI1: 2.02 (±0.12); hTERC. 5.28 (±0.54); SKIL 2.71 (±0.14); EIF5A2. 1.95 (±0.12); ECT2: 9.18 (±1.68); PIK3CA: 8.13 (±1.17); EIF4G1: 1.07 (±0.05); 557: 3.07 (±0.25); TP63: 2.51 (±0.22); TFRC. 2.42 (±0.19). Four clusters of amplification were found: SSR3 and CCLN1 at 3q25.31; hTERC and SKIL at 3q26.2; ECT2 and PIK3CA at 3q26.31-q26.32; and 55T, TP63 and TFRC at 3q27.3-q29. Patients with lymph node metastasis had significantly lower copy number of TP63 in the primary tumor than those without lymph node metastasis. IHC study on tissue arrays also showed that patients with lymph node metastasis have significantly lower TP63 staining score in the primary tumor than those without lymph node metastasis. CONCLUSION: This study showed that different amplification patterns were seen among different genes within 3q25.3-qter in EC-SCC, and several novel candidate oncogenes (SSR3, SMC4L1, ECT2, and SST) were ide

关键词： Chromosomal aberration Comparative genomic hybridization Esophageal neoplasm Immunohistochemistry Quantitative real-time PCR tissue array Tumor protein 63

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Elevated core-fucosylated Ig G is a new marker for hepatitis B virus-related hepatocellular carcinoma

Elevated core-fucosylated Ig G is a new marker for hepatitis...

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第十届全国免疫学学术大会

作者： Chang-Hong Yi Hong-Lei Weng Fei-Guo Zhou Meng Fang Jun Ji Cheng Cheng Hao Wang Roman Liebe Steven Dooley Chun-Fang Gao Department of Laboratory Medicine Eastern Hepatobiliary Surgery Hospital Second Military Medical University Molecular Alcohol Research in Gastroenterology Department of Medicine II Germany Faculty of Medicine at Mannheim University of Heidelberg Department of Hepatic Surgery VI Eastern Hepatobiliary Surgery Hospital Second Military Medical University Department of Laboratory Medicine Changzheng Hospital Second Military Medical University

Immunoglubulin G(Ig G)and its abnormal glycosylations are associated with *** present study investigates the relationship between cancer-derived Ig G and clinicopathological characteristics in hepatocellular carcinoma(HCC),assesses the value of serum N-glycosylated Ig G in diagnosing and monitoring hepatitis B virus(HBV)-related *** microarray analysis of 90 HCC tissues showed that HCC patients with Ig G immune positivity had higher

关键词： IgG tissue array diagnosis Lens culinaris agglutinin(LCA) non-invasive biomarker hepatocellular carcinoma(HCC)

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