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Tang R, Georgeoff JB, LeClair RJ. Sci-Fri AM: Imaging - 05: Principal Component X-Ray Simulation Analysis of Breast Biopsy Phantoms. Med Phys 2010. [DOI: 10.1118/1.3476184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhou Q, Lin S, Tang R, Veeraragoo P, Peng W, Wu R. Role of Fosinopril and Valsartan on Klotho Gene Expression Induced by Angiotensin II in Rat Renal Tubular Epithelial Cells. Kidney Blood Press Res 2010; 33:186-92. [PMID: 20571281 DOI: 10.1159/000316703] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Accepted: 04/02/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Klotho gene, a new anti-aging gene, is mainly expressed in the kidney tubules. Several studies have found the relationship between klotho and emergence and development of renal diseases. This study set out to explore the role of fosinopril (Fos) and valsartan (Val) on klotho expression induced by angiotensin II (Ang II) in rat renal tubular epithelial cells (NRK-52E). METHODS NRK-52E cells were divided into five groups according to the treatment of Ang II, Fos and Val. Transforming growth factor-β1 (TGF-β1), p38, phospho-p38 (p-p38), p53, and Sp1 protein expression were determined by immunohistochemical and Western blotting analysis. Klotho expression was detected by reverse transcription-polymerase chain reaction and Western blotting analysis. RESULTS Ang II upregulated TGF-β1, p-p38 and p53 expression, and inhibited Sp1 and klotho expression in NRK-52E cells. After the intervention of Fos and/or Val, TGF-β1, p-p38 and p53 expression were downregulated, Sp1 and klotho expression were upregulated. TGF-β1 and p53, Sp1 and klotho expression exhibited a positive linear correlation, respectively. CONCLUSION We conclude that Fos and Val have a protective role in Ang II-induced renal damage, and it may be through mechanism of inhibiting TGF-β1, p-p38 and p53 expression, thus upregulating Sp1 and klotho expression.
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Kruit JK, Kremer PHC, Dai L, Tang R, Ruddle P, de Haan W, Brunham LR, Verchere CB, Hayden MR. Cholesterol efflux via ATP-binding cassette transporter A1 (ABCA1) and cholesterol uptake via the LDL receptor influences cholesterol-induced impairment of beta cell function in mice. Diabetologia 2010; 53:1110-9. [PMID: 20229095 DOI: 10.1007/s00125-010-1691-2] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2010] [Accepted: 01/13/2010] [Indexed: 10/19/2022]
Abstract
AIMS/HYPOTHESIS Cellular cholesterol accumulation is an emerging mechanism for beta cell dysfunction in type 2 diabetes. Absence of the cholesterol transporter ATP-binding cassette transporter A1 (ABCA1) results in increased islet cholesterol and impaired insulin secretion, indicating that impaired cholesterol efflux leads to beta cell dysfunction. In this study, we aimed to determine the role of the LDL receptor (LDLr) in islet cholesterol uptake and to assess the contributions of cholesterol uptake compared with efflux to islet cholesterol levels. METHODS Islet cholesterol and beta cell function were assessed in mice lacking LDLr (Ldlr(-/-)), or apolipoprotein E (Apoe(-/-)), as well as in mice with beta-cell-specific deficiency of Abca1 crossed to Ldlr(-/-) mice. RESULTS Hypercholesterolaemia resulted in increased islet cholesterol levels and decreased beta cell function in Apoe(-/-) mice but not in Ldlr(-/-) mice, suggesting that the LDL receptor is required for cholesterol uptake leading to cholesterol-induced beta cell dysfunction. Interestingly, when wild-type islets with functional LDL receptors were transplanted into diabetic, hypercholesterolaemic mice, islet graft function was normal compared with Ldlr(-/-) islets, suggesting that compensatory mechanisms can maintain islet cholesterol homeostasis in a hypercholesterolaemic environment. Indeed, transplanted wild-type islets had increased Abca1 expression. However, lack of the Ldlr did not protect Abca1(-/-) mice from islet cholesterol accumulation, suggesting that cholesterol efflux is the critical regulator of cholesterol levels in islets. CONCLUSIONS/INTERPRETATION Our data indicate that islet cholesterol levels and beta cell function are strongly influenced by LDLr-mediated uptake of cholesterol into beta cells. Cholesterol efflux mediated by ABCA1, however, can compensate in hypercholesterolaemia to regulate islet cholesterol levels in vivo.
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MESH Headings
- ATP Binding Cassette Transporter 1
- ATP-Binding Cassette Transporters/genetics
- ATP-Binding Cassette Transporters/metabolism
- Analysis of Variance
- Animals
- Blotting, Western
- Cell Line, Tumor
- Cells, Cultured
- Cholesterol/metabolism
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/physiopathology
- Enzyme-Linked Immunosorbent Assay
- Hypercholesterolemia/metabolism
- Insulin/metabolism
- Insulin Secretion
- Insulin-Secreting Cells/metabolism
- Islets of Langerhans Transplantation
- Male
- Mice
- Mice, Knockout
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, LDL/genetics
- Receptors, LDL/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
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Yeh CC, Lai CY, Hsieh LL, Tang R, Wu FY, Sung FC. Protein carbonyl levels, glutathione S-transferase polymorphisms and risk of colorectal cancer. Carcinogenesis 2010; 31:228-233. [DOI: 10.1093/carcin/bgp286] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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105
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Tsao PC, Chen S, Lu JH, Wen-jue S, Yi-Chen Y, Chin-Chen P, Tang R. Central hypoventilation with cerebellar cortical dystrophy and hypoplasia of arcuate nuclei of brainstem. CASE REPORTS 2009; 2009:bcr07.2008.0422. [DOI: 10.1136/bcr.07.2008.0422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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106
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Tang R, Hsiung C, Wang JY, Lai CH, Chien HT, Chiu LL, Liu CT, Chen HH, Wang HM, Chen SX, Hsieh LL. Germ line MLH1 and MSH2 mutations in Taiwanese Lynch syndrome families: characterization of a founder genomic mutation in the MLH1 gene. Clin Genet 2009; 75:334-45. [PMID: 19419416 DOI: 10.1111/j.1399-0004.2009.01162.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
This multicenter study evaluated the mutation spectrum and frequencies of the MLH1 and MSH2 genes and determined the occurrence of large genomic deletions in 93 unrelated Taiwanese families that fulfilled the Amsterdam criteria II by denaturing high-performance liquid chromatography analysis, DNA sequencing for aberrant chromatograms, and multiplex ligation-dependent probe amplification analysis. In total, 38 pathogenic mutations (10 large deletions and 28 point mutations or small deletion/insertions) in the MSH2 or MLH1 gene were identified in 61 of the 93 families (66%). Three of the 10 large deletions and 14 of the 28 point mutations or small insertions/deletions have not been reported elsewhere. Three mutations in the MLH1 gene, the MLH1c.1846_1848delAAG (5 families), deletion exons 11-15 (4 unrelated families), and MLH1c.793C>T (13 unrelated families), accounted for 35% of all cases with pathogenic mutations. Haplotype analysis indicated that mutant c.793C>T alleles were derived from two distinct common founders that might be inherited from a single ancestor of presumably Chinese origin. As a mutation detection strategy for Taiwanese Lynch syndrome patients, we recommend that diagnosis starts with screening for large genomic deletions and continues by screening for common mutations in exons 10 and 16 of the MLH1 gene prior to searching for small mutations in the remaining exons.
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Kun KY, Tang R, Tai CM, Ng TK. Tuberous sclerosis in a Chinese baby presented with a pleural effusion and cardiac tumour during prenatal period. J OBSTET GYNAECOL 2009; 19:429-30. [PMID: 15512352 DOI: 10.1080/01443619964850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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108
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Zhang X, Xie P, Li D, Tang R, Lei H, Zhao Y. Time-dependent oxidative stress responses of crucian carp (Carassius auratus) to intraperitoneal injection of extracted microcystins. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 82:574-578. [PMID: 19252760 DOI: 10.1007/s00128-009-9671-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 02/10/2009] [Indexed: 05/27/2023]
Abstract
This study was conducted to investigate time-dependent changes in oxidative enzymes in liver of crucian carp after intraperitoneally injection with extracted microcystins 600 and 150 microg kg(-1) body weight. The results showed that activities of antioxidant enzymes, including superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase generally exhibited a rapid increase in early phase (1-3 h post injection), but gradually decreased afterwards (12-48 h) compared with the control, with an evident time-dependent effect. These zigzag changes over time contributed a better understanding on oxidative stress caused by microcystins in fish.
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Lu JH, Tang R, Chen S, Chang HH. Acute fulminant carditis presenting with sustained ventricular tachycardia, and recovery after extracorporeal cardiopulmonary resuscitation. CASE REPORTS 2009; 2009:bcr07.2008.0355. [DOI: 10.1136/bcr.07.2008.0355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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110
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Deng J, Virmani S, Yang G, Tang R, Omary R, Larson A. Abstract No. 44: Diffusion-Weighted PROPELLER MRI for Intra-Procedural Positioning of Percutaneous Biopsy Needles to Selectively Target Viable Tumor Tissues in the VX2 Rabbit Model. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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111
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Eifler A, Lewandowski R, Chung J, Virmani S, Wang D, Tang R, Szolc-Kowalska B, Woloschak G, Mulcahy M, Ryu R, Salem R, Larson A, Cheon E, Strouch M, Zarlengo D, Bentrem D, Omary R. Abstract No. 274: Development of the VX2 Pancreatic Cancer Model in Rabbits: A Platform to Test Future Interventional Radiology Therapies. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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112
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Han B, Tang R, Han D, Wang F, Zhao S, Xu M. Effects of Chinese Herb Danshen-Dahuang on Hippocampal Gene Expression of APP and PS1 in Rats with Alzheimer Disease. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)70715-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Aims:To investigate the effect of Chinese herb Danshen-Dahuang on learning and memory ability in rats with Alzheimer disease (AD) induced by D-galactose and AlCl3 and its possible mechanisms.Methods:The AD model was produced by injecting D-galactose and AlCl3 intraperitoneally for 90 days. Since the 20th day of D-galactose and AlCl3 intraperitoneal injection, the rats in Danshen-Dahuang group had been treated with Danshen-Dahuang extraction by intragastric administration for 70 days. Subsequently,learning and memory ability of the mice was evaluated by Morris water maze and hippocampal gene expression of APP, PS1 was tested by reverse transcription polymerase chain reaction (RT-PCR).Results:Rats intragastric administration with Danshen-Dahuang, mice had shorter latency (P< 0.05) and less error times (P< 0.05) in water maze test compared with those in AD model group. At the same time, Danshen-Dahuang down regulated the expression of APP, PS1 mRNA (P< 0.05) in hippocampus.Conclusions:Danshen-Dahuang improves the learning and memory ability of AD rats, its mechanism may be related to the downregulated expression of APP, PS1 mRNA.
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Han B, Tang R, Xu M, Zhao S. A Study on Personal Characteristics of the Freshman and Graduates of in Five Different Universities of Shanxi Province of China. Eur Psychiatry 2009. [DOI: 10.1016/s0924-9338(09)71282-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Aims:To study on Personal Characteristics of the freshman and graduates in five different universities.Methods:The 1022 freshman and 956 graduates from five different universities were tested with the Eysenck Personality Questiornaire (EPQ). They came from one was general university, two technological universities, one is medical university, one is agricultural university.Results:Distribution of freshman and graduates personal characteristics in various sexes and universities is different. There are 19% and 12% of freshman with some psychological problem were P type and N type respectively according to neuroticism scale of EPQ, 64% of that were unstable temperament; 31% of the freshman who were unstable temperament and 25% were mental health status was extroversion disposition. But in graduates are 42% and 34% ( P type and N type) respectively according to neuroticism scale of EPQ. Unstable temperament is 58% and mental health status was extroversion disposition is 39%.Conclusion:The freshman and graduates psychological health of Shanxi Province of China is poor and should be paid more attention. the psychological state is related to different universities. the freshman and graduates are associated with personal characteristics, unstable professions, emotional trouble and passive attitude to the value and so on.
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Guo X, Xia X, Tang R, Zhou J, Zhao H, Wang K. Development of a real-time PCR method forFirmicutesandBacteroidetesin faeces and its application to quantify intestinal population of obese and lean pigs. Lett Appl Microbiol 2008; 47:367-73. [DOI: 10.1111/j.1472-765x.2008.02408.x] [Citation(s) in RCA: 375] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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116
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Bhuiyan AR, Chen W, Srinivasan SR, Rice JC, Mock NB, Tang R, Gene Bond M, Boerwinkle E, Berenson GS. Interaction of G-protein beta3 subunit and nitric oxide synthase gene polymorphisms on carotid artery intima-media thickness in young adults: the Bogalusa Heart Study. Am J Hypertens 2008; 21:917-21. [PMID: 18551105 DOI: 10.1038/ajh.2008.188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND G-protein beta3 subunit (GNB3) gene C825T and endothelial nitric oxide (eNOS) gene G894T polymorphisms both influence arterial structure and function. However, information is scant regarding the interaction of these genes on arterial wall thickness. METHODS This aspect was examined in 654 white and black subjects, aged 25-43 years (72.9% white, 39.3% male). Arterial wall thickness was assessed in terms of the average intima-media thickness (IMT) of common carotid, internal carotid, and carotid bulb segments by B-mode ultrasonography. RESULTS Frequencies of T allele of the GNB3 C825T polymorphism (0.718 vs. 0.304, P < 0.0001) and G allele of the eNOS G894T polymorphism (0.868 vs. 0.661, P < 0.0001) were higher in blacks compared to whites. In a multivariate model including gender, age, mean arterial pressure, body mass index, triglycerides/HDL cholesterol ratio, insulin resistance index, smoking, and/or race, there was no significant genotypic effect on carotid IMT with respect to GNB3 C825T or eNOS G894T polymorphisms among whites, blacks, and total sample. However, the carriers of TT genotype of the GNB3 C825T and T allele of the eNOS G894T had a significantly lower carotid IMT among blacks (P = 0.003) and the total sample (P = 0.006). CONCLUSION These results indicate that the genetic variations of the eNOS gene in combination with the GNB3 gene jointly influence carotid artery wall thickening process in young adults, especially in blacks.
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117
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Tang R, Muller HG. Time-synchronized clustering of gene expression trajectories. Biostatistics 2008; 10:32-45. [DOI: 10.1093/biostatistics/kxn011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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118
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Boquist S, Ruotolo G, Skoglund-Andersson C, Tang R, Björkegren J, Bond MG, de Faire U, Brismar K, Hamsten A. Correlation of serum IGF-I and IGFBP-1 and -3 to cardiovascular risk indicators and early carotid atherosclerosis in healthy middle-aged men. Clin Endocrinol (Oxf) 2008; 68:51-8. [PMID: 17803702 DOI: 10.1111/j.1365-2265.2007.02998.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES IGF-I, IGFBP-1 and IGFBP-3 are putative mediators in cardiovascular disease. The present study examined (i) the correlations of circulating IGF-I, IGFBP-1 and IGFBP-3 to established cardiovascular risk factors and signs of early atherosclerosis as reflected by ultrasound measurement of common carotid intima-media thickness (IMT), and (ii) whether serum concentrations of these analytes are modulated during alimentary lipaemia. DESIGN Cross-sectional clinical study. PATIENTS A biobank and clinical database based on 96 healthy Caucasian men, aged 50 years, with an apolipoprotein (apo) E3/E3 genotype, who had originally undergone investigations of postprandial lipoprotein metabolism was used for the study. MEASUREMENTS Total IGF-I, IGFBP-1 and IGFBP-3 were determined in serum by radioimmunoassay (RIA). Free IGF-I was measured by a commercial two-site immunoradiometric assay (IRMA). RESULTS In multivariate analyses, fasting serum free IGF-I correlated inversely with IMT and accounted for 5% of the variation in multiple R(2). When fasting serum IGFBP-1 was entered in the models instead of IGF-I, IGFBP-1 correlated positively with IMT and accounted for 6% of the variation in IMT. IGFBP-3 and total IGF-I were unrelated to IMT. There were no associations between free IGF-I and cardiovascular risk factors, whereas IGFBP-1 behaved like a component of the insulin resistance syndrome. Serum free IGF-I increased and IGFBP-1 decreased postprandially. CONCLUSION The data indicate that serum free IGF-I and IGFBP-1 are implicated in early atherosclerosis.
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Stansfield W, Moss N, Tang R, Selzman C. P9. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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120
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Wei Q, Li M, Fu X, Tang R, Na Y, Jiang M, Li Y. Global analysis of differentially expressed genes in androgen-independent prostate cancer. Prostate Cancer Prostatic Dis 2007; 10:167-74. [PMID: 17199135 DOI: 10.1038/sj.pcan.4500933] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Progression to androgen independent (AI) is the main cause of death in prostate cancer, and the mechanism is still unclear. By reviewing the expression profiles of 26 prostate cancer samples in a holistic view, we found a group of genes differentially expressed in AI compared with androgen-dependent groups (P-value<0.01, t-test). Focusing on apoptosis, proliferation, hormone and angiogenesis, we found a group of genes such as thioredoxin domain containing 5 , tumor necrosis factor receptor superfamily, member 10a , ribosomal protein S19 and Janus kinase 2 upregulated in AI prostate cancer, could play important roles in the transition from AD to AI and could be biomarkers of prognosis.
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Wang L, Tang R, Bonstein T, Bush P, Nancollas G. Enamel demineralization in primary and permanent teeth. J Dent Res 2006; 85:359-63. [PMID: 16567559 PMCID: PMC2691661 DOI: 10.1177/154405910608500415] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Although enamel demineralization is important for our understanding of caries formation, no consensus has been reached regarding the possible differences in susceptibility of primary and permanent enamel. We used the constant composition (CC) technique to investigate the acid-induced demineralization of these tissues at a relative undersaturation with respect to hydroxyapatite (HAP) of 0.902, pH = 4.5, and ionic strength = 0.15 mol L(-1). The demineralization rates showed significant differences, primary enamel having the greater susceptibility to dissolution during an initial linear stage: 1.5 +/- 0.5 x 10(-10) mol mm(-2) min(-1) compared with 2.6 +/- 0.5 x 10(-11) mol mm(-2) min(-1) for permanent enamel. During the reactions, we observed nanosized crystallites which attached to the enamel surfaces or escaped into the bulk solution. These nanosized crystallites were kinetically protected against further dissolution, even though the solutions remained undersaturated. It is hypothesized that they may contribute to the remarkable mechanical and dynamic characteristics of enamel.
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Sun L, Gu S, Li X, Sun Y, Zheng D, Yu K, Ji C, Tang R, Xie Y, Mao Y. Identification of a novel human MAST4 gene, a new member of human microtubule associated serine/threonine kinase family. Mol Biol 2006. [DOI: 10.1134/s0026893306050062] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sun L, Gu S, Li X, Sun Y, Zheng D, Yu K, Ji C, Tang R, Xie Y, Mao Y. [Identification of a novel human MAST4 gene, a new member of the microtubule associated serine-threonine kinase family]. Mol Biol (Mosk) 2006; 40:808-15. [PMID: 17086981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Human protein kinases make up a large superfamily of homologous proteins, which are related by virtue of their kinase domains (also known as catalytic domains). Here we report the cloning and characterization of a novel human MAST4 (microtubule associated serine/threonine kinase family member 4) gene, which locates on human chromosome 5q13. The MAST4 cDNA is 7587 base pairs in length and encodes a putative protein of 2435 amino acids which contains a serine/threonine kinase domain and a PDZ domain. MAST4 protein has 64%, 63%, 59% and 39% identical aminoacid residues with MAST1, MAST2, MAST3 and MASTL respectively. RT-PCR analysis revealed relatively high expression level of MAST4 in most normal human tissues, with an exception of in testis, small intestine, colon and peripheral blood leukocyte.
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Meng J, Shi Y, Zhao X, Guo S, Wang H, Zheng Y, Tang R, Feng G, Gu N, Liu H, Zhu S, He L. No association between the genetic polymorphisms in the RTN4R gene and schizophrenia in the Chinese population. J Neural Transm (Vienna) 2006; 114:249-54. [PMID: 16897606 DOI: 10.1007/s00702-006-0538-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2006] [Accepted: 06/18/2006] [Indexed: 11/24/2022]
Abstract
The RTN4R gene is located in the 22q11 region and it encodes a subunit of the receptor complex (RTN4R-p75NTR) which results in neuronal growth inhibitory signals in response to Nogo-66, MAG or OMG signaling. Previous studies have suggested that RTN4R might act as a potential candidate for schizophrenia susceptibility loci. We genotyped four SNPs within the gene and conducted a case-control study and TDT analysis, involving 707 schizophrenic patients, 689 controls and 372 unrelated small nuclear families with schizophrenic offspring in the Chinese population. We examined allele and genotype frequencies and haplotype distributions in both family- and nonfamily-based samples. Our results suggest that there is no significant association between the genetic polymorphisms and schizophrenia in the Han Chinese population.
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Pritchett Y, McCarberg B, Watkin J, Chappell A, Robinson M, Xu J, Rotz B, Wernicke J, Detke M, Iyengar S, Henck J, Bymaster F, Callaghan J, Knadler M, Thase M, Meratee M, Chung J, Schweitzer J, Byrnes K, Stoica B, Giovanni S, Biase A, Knoblach S, Hoffman E, Faden A, Michaeli S, Sorce D, Öz G, Ugurbil K, Garwood M, Tuite P, Jett D, Deberdt W, Csernansky J, Buckley P, Peiskens J, Lipkovich I, Kollack-Walter S, Houston J, Zhang Y, Liu-Siefert H, Buckley PF, Csernansky JG, Peuskens J, Kollack-Walker S, Houston JP, Rotelli M, Theodore W, Giovacchini G, Bagic A, Herscovitch P, Carson R, Herholz K, Weisenbach S, Hilker R, Heiss W, Nahab F, Hallett M, El-Khodor B, Edgar N, Chen A, Heyes MP, Jiang Q, Ahmed S, Pedersen R, Musgnung J, Entsuah R, Nordberg A, Masdeu J, Gerhard A, Ebmeier K, Pappata S, Perani D, Laere K, Halldin C, Salmon E, Knudsen G, Robins S, Fehlings M, Baptiste D, Skolnick BE, Davis SM, Bran NC, Mathew SE, Mayer SA, Kaminski RM, Marini H, Ortinski PI, Yonekawa W, Vicini S, Rogawski MA, Gasior M, Tang R, White N. Abstracts from the ASENT 2006 Annual Meeting March 8–11, 2006. NeuroRx 2006. [DOI: 10.1016/j.nurx.2006.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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