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Wu J, Liu S, Yu J, Zhou G, Rao D, Jay CM, Kumar P, Sanchez R, Templeton N, Senzer N, Maples P, Nemunaitis J, Brunicardi FC. Vertically integrated translational studies of PDX1 as a therapeutic target for pancreatic cancer via a novel bifunctional RNAi platform. Cancer Gene Ther 2014; 21:48-53. [PMID: 24457987 DOI: 10.1038/cgt.2013.84] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 12/09/2013] [Indexed: 11/09/2022]
Abstract
RNA interference (RNAi) represents a powerful, new tool for scientific investigation as well as a promising new form of targeted gene therapy, with applications currently in clinical trials. Bifunctional short hairpin RNA (shRNA) are synthetic RNAi molecules, engineered to utilize multiple endogenous RNAi pathways to specifically silence target genes. Pancreatic and duodenal homeobox 1 (PDX1) is a key regulator of pancreatic development, β-cell differentiation, normal β-cell function and pancreatic cancer. Our aim is to review the process of identifying PDX1 as a specific, potential RNAi target in pancreatic cancer, as well as the underlying mechanisms and various forms of RNAi, with subsequent testing and development of PDX1-targeted bifunctional shRNA therapy.
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Jacoby MA, De Jesus Pizarro RE, Shao J, Koboldt DC, Fulton RS, Zhou G, Wilson RK, Walter MJ. The DNA double-strand break response is abnormal in myeloblasts from patients with therapy-related acute myeloid leukemia. Leukemia 2013; 28:1242-51. [PMID: 24304937 PMCID: PMC4047198 DOI: 10.1038/leu.2013.368] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/22/2013] [Accepted: 11/26/2013] [Indexed: 02/06/2023]
Abstract
The complex chromosomal aberrations found in therapy-related acute myeloid leukemia (t-AML) suggest that the DNA double-strand break (DSB) response may be altered. In this study we examined the DNA DSB response of primary bone marrow cells from t-AML patients and performed next-generation sequencing of 37 canonical homologous recombination (HR) and non-homologous end-joining (NHEJ) DNA repair genes, and a subset of DNA damage response genes using tumor and paired normal DNA obtained from t-AML patients. Our results suggest that the majority of t-AML patients (11 of 15) have tumor-cell intrinsic, functional dysregulation of their DSB response. Distinct patterns of abnormal DNA damage response in myeloblasts correlated with acquired genetic alterations in TP53 and the presence of inferred chromothripsis. Furthermore, the presence of trisomy 8 in tumor cells was associated with persistently elevated levels of DSBs. Although tumor-acquired point mutations or small indels in canonical HR and NHEJ genes do not appear to be a dominant means by which t-AML leukemogenesis occurs, our functional studies suggest that an abnormal response to DNA damage is a common finding in t-AML.
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Du GF, Li CZ, Shang SH, Xu XY, Chen HZ, Zhou G. Practising case-based learning in oral medicine for dental students in China. EUROPEAN JOURNAL OF DENTAL EDUCATION : OFFICIAL JOURNAL OF THE ASSOCIATION FOR DENTAL EDUCATION IN EUROPE 2013; 17:225-228. [PMID: 24127763 DOI: 10.1111/eje.12042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/25/2013] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Teacher-centred education dominates dental education in China. Student-centred education has recently been introduced in the School of Stomatology, Wuhan University, and the effectiveness of such methods needs to be tested. The purpose of this study is to compare the learning outcomes of case-based learning (CBL) and lecture-based education (LBE) in an oral medicine curriculum. MATERIALS AND METHODS We chose oral leukoplakia as the learning subject for dental students. Forty fourth-year dental students participated in the study. First, they were presented to basic knowledge of oral leukoplakia and related oral mucosal diseases. Then, they were divided into a CBL group (n=20) and an LBE group (n=20) by random numbers. The groups experienced the remaining course in separate groups. All students answered a questionnaire on their satisfaction with the education and the same standardised written test to analyse their learning outcomes. RESULTS Both CBL and LBE courses were well accepted by students according to the satisfactory scores of the questionnaire. The test scores of the CBL group (90.00±6.69) were significantly higher (P<0.01) than those of the LBE group (83.00±6.77). The percentage of high test score (test score≥85) of the CBL group (85%) was also significantly higher (P<0.01) than that of the LBE group (45%). CONCLUSIONS In this example, CBL was found to be more effective than LBE to teach dental students. These findings suggest that CBL should be added in our future oral medicine curriculum for dental students.
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Wang J, Xia T, Ma L, Qu B, Pan L, Zhou G, Ju Z, Xie C, Guo Y. Primary Outcomes in Phase 2 Study of Hypofractionated Patterns by Stereotactic Ablative Radiation Therapy (SABR). Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Parfett C, Williams A, Zheng J, Zhou G. Gene batteries and synexpression groups applied in a multivariate statistical approach to dose–response analysis of toxicogenomic data. Regul Toxicol Pharmacol 2013; 67:63-74. [DOI: 10.1016/j.yrtph.2013.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 06/26/2013] [Indexed: 12/28/2022]
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Cao JX, Ou CR, Zou YF, Ye KP, Zhang QQ, Khan MA, Pan DD, Zhou G. Activation of caspase-3 and its correlation with shear force in bovine skeletal muscles during postmortem conditioning1. J Anim Sci 2013; 91:4547-52. [DOI: 10.2527/jas.2013-6469] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Li ZY, Gu J, Yan J, Wang JJ, Huang WH, Tan ZR, Zhou G, Chen Y, Zhou HH, Ouyang DS. Hypertensive Cardiac Remodeling Effects of Lignan Extracts from Eucommia ulmoides Oliv. Bark — A Famous Traditional Chinese Medicine. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2013; 41:801-15. [PMID: 23895153 DOI: 10.1142/s0192415x13500547] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The lignan extracts from the tree bark of Eucommia ulmoides Oliv., a famous traditional Chinese medicine, have been demonstrated to have inhibitory effects on aldose reductase activity in spontaneously hypertensive rat myocardium. This study was aimed to investigate the hypertensive cardiac remodeling effects of the lignan extracts together with epalrestat. Ten-week-old male spontaneously hypertensive rats were randomly divided into three groups (n = 12, each) and administered 100 mg/kg/d of captopril (angiotensin converting enzyme inhibitor), 100 mg/kg/d of epalrestat (aldose reductase inhibitor) or 300 mg/kg/d of lignan extracts by gavage for 16 weeks. Sex-, age-, and number-matched normotensive Wistar Kyoto rats with spontaneously hypertensive rats were treated with distilled water (vehicle) as controls. Systolic blood pressures were measured periodically. Echocardiography examination was taken when rats were 24 weeks old. We found that both captopril and lignan extracts lowered blood pressure, and inhibited aldose reductase activity similarly to epalrestat. Echocardiography examination and histomorphometry indices were improved in all treated groups (p < 0.05). Therefore, lignan extracts could prevent hypertensive cardiac remodeling, which is likely related to aldose reductase inhibition.
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Zhou G, Nie S, Dai L, Wang X, Fan W. Sex differences in stroke case fatality: a meta-analysis. Acta Neurol Scand 2013; 128:1-8. [PMID: 23410179 DOI: 10.1111/ane.12091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND In recent years, there were great controversies about gender disparities in stroke outcome. The study was aimed to investigate sex differences in stroke case fatality on all published studies based in a comprehensive meta-analysis. METHODS A systematic search of Pubmed, EMBASE, SCOPUS, ISI Web of Science, and Cochrane Library was conducted for the included papers between 1992 and 2009. For the pooled group and subgroup analysis, fixed effects or random effects model were used to find sex differences in case fatality of stroke with a Mantel-Haenszel method. Meta-regression analysis was performed to study methodological heterogeneity. RESULTS Thirty-six population-based studies, together with three randomized clinical trials (RCTs), were included in the present study. For the pooled group, there was an overall hazard risk of 1.13 for women compared with men. A hazard risk of 1.27 was observed for women in RCTs subgroup and 1.12 for women in population-based subgroup. The regression analysis found no significant correlation between methodological variables and heterogeneity. CONCLUSIONS Due to the limited data about sex differences in stroke case fatality, the findings should be treated cautiously as preliminary. More large multicenter clinical trials should be performed to verify the reliability of the results.
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Liu P, Zeng F, Zhou G, Wang J, Wen H, von Deneen KM, Qin W, Liang F, Tian J. Alterations of the default mode network in functional dyspepsia patients: a resting-state fmri study. Neurogastroenterol Motil 2013; 25:e382-8. [PMID: 23617737 DOI: 10.1111/nmo.12131] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 03/15/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Increasing brain imaging studies have emphasized the role of regional brain activity abnormalities in functional dyspepsia (FD) during the resting state. The goal of this study was to investigate the default mode network (DMN) in FD patients and healthy controls (HCs). METHODS Resting-state functional magnetic resonance imaging (fMRI) scanning was carried out on 49 patients and 39 HCs. Independent component analysis (ICA) was used to isolate the DMN in each subject. Group topography of the DMN was compared to study significant alteration in FD. A correlation analysis was then performed in the FD group to investigate the effects of symptom severity and the psychological factors on the DMN. KEY RESULTS Significant spatial differences with the DMN in FD patients, compared with HCs, were mainly found in the dorsomedial prefrontal cortex (dmPFC), ventromedial prefrontal cortex (vmPFC), orbitofrontal cortex (OFC), pregenual anterior cingulate cortex (pACC), thalamus, parahippocampal gyrus, precuneus, parietal cortex, and temporal pole. Meanwhile, Nepean Dyspepsia Index (NDI) scores were positively correlated with the pACC, and was negative correlated with the OFC. However, both the Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS) scores were not correlated with any regions of interest showing differences between the FD patients and the HCs. CONCLUSIONS & INFERENCES These findings suggested that the DMN might indeed undergo dysfunctional changes due to the abnormal persistent activity in FD patients. To a certain extent, the changes in the DMN were related to the FD-related symptom severity.
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Wang J, Yang G, Zhou G. Quantitative trait loci for morphometric body measurements of the hybrids of silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis). ACTA BIOLOGICA HUNGARICA 2013; 64:169-83. [PMID: 23739886 DOI: 10.1556/abiol.64.2013.2.4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Quantitative trait loci (QTL) for 11 morphometric body measurements of the hybrids of silver (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) including body weight (BW), standard length (SL), body depth (BD), body thickness (BT), head length (HL), head depth (HD), length of ventral keel (LVK), length of pectoral fin (Lpec), length of pelvic fin (Lpel), length of caudal fin (Lcau) and space between pectoral and pelvic fins (SPP) were located on the sex average microsatellite linkage map constructed using the hybrids of a female bighead and a male silver carp, on which 15 microsatellites were newly mapped. One locus was found to be responsible for BW, LV K and SPP, respectively. As many as 6 loci were found to be responsible for HD. The variances of remaining traits were partitioned by different numbers of loci varying between 2 and 5. The variance explained each locus ranged from 9.1% to 23.8% of the total. The variance explained by all loci responsible for each measurement ranged from 17.7% to 75.1%. It was noted that multiple measurements were mapped on the same locus. For example, a region bounded by Hym435 and Hym145 was found to be responsible for all the measurements analyzed.
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Shi G, Zhang X, Zheng J, Zhou G. Microporous Film, Made from β-Crystalline Phase Polypropylene. INT POLYM PROC 2013. [DOI: 10.3139/217.950330] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
A new type microporous polypropylene film was prepared simply by biaxial drawing of β-crystalline phase polypropylene The effect of draw ratio on the pore size distribution, ethanol sorption, and porosity, as well as β-α transformation during drawing were studied For the purpose of improving its hydrophilicity ion and solute permeability, the plasma graft-polymerization technique was utilized The resulting film showed much higher permeability toward Na+, Mg++ and urea, being 3.2 × 10−6, 5.8 × 10−8 and 1.75 × 10−6 cm2/min, respectively, than the original one and had better dimensional stability.
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Wang LS, Zhu B, Abd El-Aty AM, Zhou G, Li Z, Wu J, Chen GL, Liu J, Tang ZR, An W, Li Q, Wang D, Zhou HH. The Influence of St. John's Wort on CYP2C19 Activity with Respect to Genotype. J Clin Pharmacol 2013; 44:577-81. [PMID: 15145964 DOI: 10.1177/0091270004265642] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Induction of cytochrome p450 isozymes is the major cause for clinical drug interactions of St. John's wort. The relationships of St. John's wort to cytochrome p450 isoforms have been fully investigated, but its effect on CYP2C19 is lacking. Thus, the aim of the present study was to observe the effect of St. John's wort on CYP2C19 activity using CYP1A2 as a control. Twelve healthy adult men-6 extensive metabolizers of CYP2C19 (2C19(*)1/2C19(*)1) and 6 poor metabolizers (4 2C19(*)2/2C19(*)2 and 2 2C19(*)2/2C19(*)3)-were enrolled in a two-phase, randomized, crossover manner. All subjects took a 300-mg St. John's wort tablet or placebo three times daily for 14 days, and then the activities of CYP2C19 and CYP1A2 were measured using mephenytoin and caffeine. It was found that St. John's wort treatment significantly increased CYP2C19 activity in CYP2C19 wild-genotype subjects, with urinary 4'-hydroxymephenytoin excretion raised by 151.5% +/- 91.9% (p = 0.0156), whereas no significant alteration was observed for CYP2C19 poor metabolizers. Repeated St. John's wort administration did not affect the CYP1A2 phenotypic ratio for both CYP2C19 genotype subjects. In conclusion, St. John's wort is an inducer to the human CYP2C19, and clinicians should pay great attention when St. John's wort is added to or withdrawn from an existing drug regimen containing substrates for such enzymes.
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Zhou G, Wang H, Liu SH, M. Shahi K, Lin X, Wu J, Feng XH, Qin J, Tan TH, C. Brunicardi F. p38 MAP Kinase Interacts with and Stabilizes Pancreatic and Duodenal Homeobox-1. Curr Mol Med 2013. [DOI: 10.2174/156652413805076821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhou G, Wang H, Liu SH, Shahi KM, Lin X, Wu J, Feng XH, Qin J, Tan TH, Brunicardi FC. p38 MAP kinase interacts with and stabilizes pancreatic and duodenal homeobox-1. Curr Mol Med 2013; 13:377-386. [PMID: 23331010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 10/11/2012] [Accepted: 10/18/2012] [Indexed: 06/01/2023]
Abstract
Pancreatic and duodenal homeobox-1 (PDX-1) is a homeodomain-containing transcription factor that plays a critical role in pancreatic development, β-cell differentiation, maintenance of normal β-cell function and tumorigenesis. PDX-1 is subjected to extensive post-translational modifications for its stability, subcellular location and transactivity. We report here that PDX-1 expression is up-regulated by p38 MAP kinase. Antibody array screen identified p38 as a candidate PDX-1-interacting protein in GFP-PDX-1 stable HEK293 cells. The p38-PDX-1 interaction was confirmed by immunoprecipitation/Western blotting analysis in both transient transfection system of HEK293 cells and endogenous system of β-TC-6 cells stimulated by glucagon-like peptide 1 (GLP-1). Co-transfection of p38 with PDX-1 resulted in increased PDX-1 expression in HEK293 cells, which was accompanied by a decreased PDX-1 ubiquitination. Mass spectrometry analysis showed that Ser 268 of human PDX-1 was phosphorylated in GFP-PDX-1 stable HEK293 cells. Functional mutagenesis analysis showed that mutation of Ser 269 of mouse PDX-1 (corresponding to Ser 268 of human PDX-1) into nonphosphorylatable alanine abolished the stabilizing effect of p38 on PDX-1, which was in line with enhanced PDX-1 ubiquitination and shortened half-life of PDX-1. p38 showed kinase activity towards PDX-1 in vitro, suggesting that Ser 269 is a potential p38-regulated phosphorylation site within PDX-1. GLP-1-stimulated PDX-1 expression was accompanied by p38 kinase activation in mouse insulinoma β-TC-6 cells and p38 inhibitor SB202190 inhibited GLP-1-stimulated PDX-1 expression with accompanied inhibition of p38 kinase activation. Taken together, our studies indicated that p38 MAP kinase is a positive regulator of PDX-1 stability and that p38 exerts its stabilizing effect on PDX-1 through a phosphorylation-dependent inhibition of PDX-1 ubiquitination.
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Liu S, Zhou G, Shahi K, Nemunaitis J, Fisher W, Brunicardi F. A Novel PDX-1-Specific, Synthetic Promoter Driving Systemic Suicide Gene Therapy Suppresses Pancreas Cancer (PC) Tumor Volume in Mice. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zhou G, Wang H, Liu SH, M. Shahi K, Lin X, Wu J, Feng XH, Qin J, Tan TH, C. Brunicardi F. p38 MAP Kinase Interacts with and Stabilizes Pancreatic and Duodenal Homeobox-1. Curr Mol Med 2013. [DOI: 10.2174/1566524011313030007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Gong ZC, Huang Q, Dai XP, Lei GH, Lu HB, Yin JY, Xu XJ, Qu J, Pei Q, Dong M, Zhou BT, Shen J, Zhou G, Zhou HH, Liu ZQ. NeuroD1 A45T and PAX4 R121W polymorphisms are associated with plasma glucose level of repaglinide monotherapy in Chinese patients with type 2 diabetes. Br J Clin Pharmacol 2013; 74:501-9. [PMID: 22296034 DOI: 10.1111/j.1365-2125.2012.04202.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
AIMS We aimed to determine whether NeuroD1/BETA2 and PAX4 polymorphisms were associated with the therapeutic efficacy of repaglinide in Chinese type 2 diabetes mellitus (T2DM) patients. METHODS Three hundred and sixty-eight T2DM patients and 132 healthy control subjects were genotyped by restriction fragment length polymorphism. Forty-three patients with various genotypes were randomly selected to undergo 8 weeks of repaglinide treatment (3 mg day(-1)). Fasting plasma glucose, postprandial plasma glucose, glycated haemoglobin, fasting and postprandial serum insulin (FINS, PINS), homeostasis model assessment for insulin resistance, serum triglyceride, total cholesterol, low-density lipoprotein-cholesterol and high-density lipoprotein-cholesterol were determined before and after repaglinide treatment. RESULTS The allelic frequency of NeuroD1/BETA2 T45 was higher in T2DM patients than in the control subjects [13.45 vs. 6.82%, P < 0.01, odds ratios = 2.342 (1.365, 4.019), P= 0.002]. Type 2 diabetes mellitus patients with the mutated allele of NeuroD1/BETA2 A45T polymorphism showed higher FINS (13.46 ± 12.57 vs. 10.04 ± 7.09 mU l(-1) , P < 0.05) (11.67, 14.83 vs. 8.38, 11.37) and PINS (52.11 ± 40.93 vs. 68.66 ± 43.87 mU l(-1), P < 0.05) (44.89, 58.35 vs. 55.35, 88.87) than individuals with the T allele. The PAX4 R121W R allele carriers had higher PINS (52.11 ± 40.93 vs. 68.66 ± 43.87 mU l(-1), P < 0.05) (44.89, 58.35 vs. 55.35, 88.87) than subjects with the W allele. After repaglinide treatment, patients with the T allele of NeuroD1/BETA2 A45T polymorphisms had attenuated efficacy on fasting plasma glucose (-2.79 ± 2.14 vs.-0.99 ± 1.80 mmol l(-1), P < 0.01) (-3.53, -1.84 vs.-1.99, -0.13) and postprandial plasma glucose (-6.71 ± 5.90 vs.-2.54 ± 3.39 mmol l(-1), P < 0.01) (-9.28, -4.62 vs.-4.34, -0.84). Patients with the RR genotype of PAX4 R121W showed better efficacy with respect to the level of postprandial plasma glucose than R/W genotypes (-6.53 ± 6.52 vs.-2.95 ± 1.17 mmol l(-1), P < 0.05) (-8.20, -4.89 vs.-3.92, -1.20). CONCLUSIONS The NeuroD1/BETA2 and PAX4 polymorphisms were substantially associated with plasma glucose level after repaglinide monotherapy.
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Su W, Gao F, Lu J, Wu W, Zhou G, Lu S. Levels of matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 mRNAs in patients with primary hypertension or hypertension-induced atherosclerosis. J Int Med Res 2013; 40:986-94. [PMID: 22906271 DOI: 10.1177/147323001204000317] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) affect degradation of vascular elastin, collagen remodelling and formation of atherosclerotic plaque. This cross-sectional study investigated the levels of MMP-9 and TIMP-1 mRNAs in the blood of patients with primary hypertension with and without hypertension-induced carotid atherosclerosis. METHODS Hypertensive patients with and without atherosclerosis and age- and gender-matched normotensive subjects were enrolled. MMP-9 and TIMP-1 mRNA were quantified using real-time reverse transcription-polymerase chain reaction. RESULTS Hypertensive patients (n = 86) had significantly lower levels of TIMP-1 mRNA than normotensive subjects (n = 43). Hypertensive patients with atherosclerosis (n = 42) showed significantly elevated levels of MMP-9 mRNA compared with both normotensive subjects and hypertensive patients without atherosclerosis (n = 44). CONCLUSIONS Primary hypertension resulted in decreased TIMP-1 mRNA levels, suggesting a potential mechanism contributing to the degradation of elastin. Hypertension-induced atherosclerosis was associated with significantly increased levels of MMP-9 mRNA, which may enhance both the deposition of types I and III collagen and atherosclerotic plaque formation.
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Tang N, Deng R, Wang Y, Lin M, Li H, Qiu Y, Hong M, Zhou G. GSTM1 and GSTT1 null polymorphisms and susceptibility to anti-tuberculosis drug-induced liver injury: a meta-analysis [Review article]. Int J Tuberc Lung Dis 2013; 17:17-25. [DOI: 10.5588/ijtld.12.0447] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zhao H, Zheng C, Feng G, Zhao Y, Liang H, Wu H, Zhou G, Liang B, Wang Y, Xia X. Temperature-sensitive poly(N-isopropylacrylamide-co-butyl methylacrylate) nanogel as an embolic agent: distribution, durability of vascular occlusion, and inflammatory reactions in the renal artery of rabbits. AJNR Am J Neuroradiol 2013; 34:169-76. [PMID: 22859278 DOI: 10.3174/ajnr.a3177] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE We have developed a new thermosensitive liquid embolic agent, PIB nanogel, that can be solidified at body temperature. We thus further investigated the distribution, durability of vascular occlusion, and inflammatory reactions of PIB in embolization of the renal artery of rabbits. MATERIALS AND METHODS The bilateral renal arteries of 9 rabbits were first embolized with PIB at different injection rates. The distribution pattern of PIB was investigated by contact radiography and histology 1 hour after embolization. The right renal arteries of 20 rabbits were then embolized with PIB at the proper injection rate. Angiography and pathologic examination of the kidneys were performed at 1 week and 1, 2, and 3 months after embolization to evaluate the long-term outcomes. RESULTS With the injection rate increasing, PIB could reach the more distal branch of the renal artery. The proper injection rate was chosen as 0.10 mL/s due to the homogeneous distribution of PIB from the main renal artery to the precapillary level at this rate. During a 3-month follow-up observation period, no angiographic recanalization was observed. Histologically, we found no disruption of the vessel wall or subintimal bleeding, no extravasation of PIB, and no evidence of neovascularization. Moreover, there was only a mild inflammatory response, manifested by few lymphocytic and monocellular infiltration, without foreign body granuloma formation. CONCLUSIONS Embolization of the renal artery with PIB was easy and controllable, which could lead to a homogeneous and persistent occlusion without severe inflammatory changes. PIB might be a suitable material for intravascular embolization.
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Tan SL, Li Z, Song GB, Liu LM, Zhang W, Peng J, Zhang T, Jia FF, Zhou G, Zhou HH, Zhou XM. Development and comparison of a new personalized warfarin stable dose prediction algorithm in Chinese patients undergoing heart valve replacement. DIE PHARMAZIE 2012; 67:930-937. [PMID: 23210243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Pharmacogenetics-based algorithms would be especially desirable for patients undergoing heart valve replacement (HVR), who are particularly sensitive to warfarin during the initial treatment phase following surgery. We aimed to derive a warfarin dosing algorithm from data of Chinese patients undergoing HVR, and to compare it with previously published dosing algorithms as applied to our HVR patients. METHODS 641 Chinese HVR patients on stable maintenance dose of warfarin were enrolled from a single clinic site. Data of 321 patients were used to derive a warfarin dosing algorithm using stepwise multiple linear regression analysis. Previously published algorithms were selected from Pubmed database for comparison. The performance of all the algorithms was characterized according to mean absolute error (MAE) and percentage of predicted doses falling within +/- 20% of clinically observed doses (percentage of ideal prediction) in the other 320 patients. RESULTS The newly developed algorithm included eight factors: VKORC1-1639G > A, CYP2C9*3, BSA, age, number of increasing INR drugs, smoking habit, preoperative stroke history and hypertension. Our algorithm accounted for 56.4% of variations in the inter-patient warfarin stable doses. All the algorithms showed better performance in a medium-dose (1.88-4.38 mg/day) and high-dose (> or = 4.38 mg/day) groupings than in a low-dose (< or = 1.88 mg/day) grouping. Compared with the 14 previously published algorithms, our algorithm had the lowest MAE (-0.07 mg/day) and the highest percentage of ideal prediction (62.8%) in the total validation cohort. CONCLUSIONS Our warfarin dosing algorithm is potentially useful for patients whose population profiles are similar to those of our patients.
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Hänze J, Zhou G, Henrici M, Hegele A, Blaheta R, Hofmann R, Olbert P. 104 MAGE-A3 Counteracts Cell Survival in Human Bladder Cancer Cell Lines. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71902-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Qin L, Tang Z, Liu K, Ye S, Zhou G. P53 mutations may be related to tumor invasiveness of human hepatocellular-carcinoma in china. Oncol Rep 2012; 2:1175-9. [PMID: 21597878 DOI: 10.3892/or.2.6.1175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A combined polymerase chain reaction (PCR) with the enzyme HaeIII restriction analysis and DNA sequencing have been employed to study the mutations at codon 249 of p53 gene in two human hepatocellular carcinoma (HCC) cell lines and 28 surgical specimens of HCC. 14 of the 28 HCC samples (50%) had p53 point mutations at codon 249. All of point mutations at codon 249 in 10 cases sequenced are AGG to AGT transversion. p53 gene mutated more frequently in invasive HCCs than that in non-invasive HCCs. This suggested that the codon 249 was a mutational hotspot of p53 gene in human HCCs in China, and p53 mutations may be related to tumor invasiveness of human HCC.
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Ioffe Y, Hillen T, Zhou G, Schwarz J, Mutch D, Powell M, Rader J, Zighelboim I, Hagemann A, Thaker P. Post-radiation damage to the pelvic girdle in cervical cancer patients: Is intensity modulated radiation therapy safer than conventional radiation? Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2012.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ding J, He R, Zhou G, Tang C, Yin C. Multilayered mucoadhesive hydrogel films based on thiolated hyaluronic acid and polyvinylalcohol for insulin delivery. Acta Biomater 2012; 8:3643-51. [PMID: 22743112 DOI: 10.1016/j.actbio.2012.06.027] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 06/19/2012] [Accepted: 06/19/2012] [Indexed: 01/19/2023]
Abstract
A multilayered hydrogel film system based on hyaluronic acid-cysteamine (HA-Cym) and polyvinylalcohol (PVA) was fabricated. It contained a drug-impermeable backing layer, a supporting layer preventing direct contact between the loaded drug and the backing layer, a drug-loading layer and a mucoadhesive layer. Scanning electron microscopy demonstrated the presence of the distinct layers. The composition and preparation procedure of the films influenced their mucoadhesion, swelling, in vitro release of insulin and loaded insulin stability. Vacuum drying and crosslinked PVA with glutaraldehyde might reduce mucoadhesion, and they partially decreased the bioactivity of loaded insulin. Lyophilized hydrogel film with uncrosslinked PVA as a mucoadhesive layer possessed high mucoadhesion and showed no influence on the bioactivity of loaded insulin. The application of vacuum-dried PVA-crosslinked HA-Cym/PVA hydrogel film as a drug-impermeable backing layer would provide a controllable unidirectional insulin release. Therefore, such a multilayered hydrogel film system could be a promising mucoadhesive delivery system for controlled macromolecular drug release.
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Zhou G, Cheng Z, Yue Z. Own-race faces capture more attention than other race faces: Evidence from response time and N2pc. J Vis 2012. [DOI: 10.1167/12.9.1351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Nasir AA, Niyonkuru F, Nottidge TE, Adeleye AO, Ali S, Ameh EA, Bekele A, Bonet I, Derbew M, Ekenze SO, Oluwadare E, Jani PG, Labib M, Mezue WC, Mijumbi C, Zimmerman K, Baird R, Carsen S, Dreyer JS, Fairfull Smith RJ, Ferri-de-Barros F, Friedman J, Gill R, Gray A, Howe K, Bhoj I, Poenaru D, Rosen B, Yusuf AS, Abdur-Rahman LO, Ahmed BA, Panikar D, Abraham MK, Petroze RT, Groen RS, Ntaganda E, Kushner AL, Calland JF, Kyamanywa P, Ekrikpo U, Ifesanya AO, Nnabuko RE, Mazhar SB, Kotisso B, Shiferaw S, Ngonzi J, Dorman K, Byrne N, Satterthwaite L, Pittini R, Tajirian T, Kneebone R, Bello F, Desalegn D, Henok F, Dubrowsk A, Ugwumba FO, Obi UM, Ikem IC, Oginni LM, Howard A, Onyiah E, Iloabachie IC, Ohaegbulam SC, Kaggwa S, Tindimwebwa J, Mabweijano J, Lipnick M, Dubowitz G, Goetz L, Jayaraman S, Kwizera A, Ozgediz D, Matagane J, Bishop T, Guerrero A, Ganey M, Poenaru D, Park S, Simon D, Zirkle LG, Feibel RJ, Hannay JAF, Lane RHS, Cameron BH, Rambaran M, Gibson J, Howard A, Costas A, Meara JG, St-Albin M, Dyer G, Devi PR, Henshaw C, Wright J, Leah J, Spitzer RF, Caloia D, Omenge E, Chemwolo B, Zhou G, July J, Totimeh T, Mahmud R, Bernstein M, Ostrow B, Lowe J, Lawton C, Kozody LL, Coutts P, Nesbeth H, Revoredo A, Kirton R, Sibbald G, Dodge J, Giede C, Jimenez W, Cibulska P, Sinesat S, Bernardini M, McAlpine J, Finlayson S, Miller D, Elkanah O, Itsura P, Elit L. Bethune Round Table 2012: 12th Annual Conference: Filling the GapImpact of international collaboration on surgical services in a Nigerian tertiary centreSurgeons OverSeas Assessment of Surgical Needs (SOSAS) Rwanda: a useful rural health experience for medical studentsPreinternship Nigerian medical graduates lack basic musculoskeletal competencyDecompressive craniectomy: a low-cost surgical technique from a developing countryEfficacy of surgical management with manual vacuum aspiration versus medical management with misoprostol for evacuation of Lrst trimester miscarriages: a randomized trial in PakistanGaps in workforce for surgical care of children in Nigeria: increasing capacity through international partnershipsAnalyses of the gap between surgical resident and faculty surgeons concerning operating theatre teaching: report from Addis Ababa University, EthiopiaIntroduction of structured operative obstetric course at Mbarara Regional Referral Hospital with resultant reduction in maternal mortalityA training cascade for Ethiopian surgical and obstetrical care: an interprofessional, educational, leadership and skills training programUndergraduate surgery clerkship and the choice of surgery as a career: perspective from a developing countryIntramedullary nail versus external Lxation in management of open tibia fractures: experience in a developing countryThe College of Surgeons of East, Central and Southern Africa (COSECSA) Llling the gap; increasing the number of surgeonsClinical officer surgical training in Africa: COST-AfricaSecondary neuronal injuries following cervical spine trauma: audit of 68 consecutive patients admitted to neurosurgical services in Enugu, NigeriaCapacity building and workforce expansion in surgery, anesthesia and perioperative care: the GPAS model in UgandaKnowledge retention surveys: identifying the effectiveness of a road safety education program in Dar es Salaam, TanzaniaA tale of 2 fellowships: a comparative analysis of Canadian and East-African pediatric surgical trainingOutcomes of closed diaphyseal femur fractures treated with the SIGN nailManaging surgical emergencies: delivering a new course for the College of Surgeons of East Central and Southern AfricaAn evaluation of the exam for the University of Guyana Diploma in SurgeryPriority setting for health resource allocation in Brazil: a scoping literature reviewForeign aid effects on orthopedic capacity at the Hospital Saint Nicholas, HaitiReTHINK aid: international maternal health collaborationsEffect of electronic medical record implementation on patient and staff satisfaction, and chart completeness in a resource-limited antenatal clinic in KenyaImplementation of awake craniotomy in the developing world: data from China, Indonesia and AfricaRegionalization of diabetes care In Guyana, South AmericaQuantifying the burden of pediatric surgical disease due to delayed access to careImplementation of oncology surgery in Western Kenya. Can J Surg 2012. [DOI: 10.1503/cjs.016812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Yao C, Bach HG, Zhang R, Zhou G, Choi JH, Jiang C, Kunkel R. An ultracompact multimode interference wavelength splitter employing asymmetrical multi-section structures. OPTICS EXPRESS 2012; 20:18248-18253. [PMID: 23038374 DOI: 10.1364/oe.20.018248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
By using the film mode matching method, a novel design for asymmetrical multi-section 1.55/1.31 μm wavelength splitter based on multimode interference has been proposed and simulated, which can be effectively applied to wavelength multiplexer, self-biased photodiode, and other optical devices. Compared with the conventional wavelength splitter design, the length of the novel structure has been reduced to at least 1/5, showing better performance. The presented structure is also adequate for splitting other wavelengths and more tolerable fabrications.
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Zhou G, Xu S, Yang Y, Yang D, Xie C, Yin L, Zhang H, Liu A. SU-E-J-19: How Should CTV to PTV Margin Be Created - Analysis of Set-Up Uncertainties of Different Body Parts Using Daily Image Guidance. Med Phys 2012; 39:3656. [PMID: 28517601 DOI: 10.1118/1.4734852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The objective for this study is to systematically evaluate how the CTV to PTV margin should be created to compensate for setup error as afunction of treatment site. METHODS A total of 1757 setup MVCT images were analyzed using the registration between the MVCT and planning KVCT images. Among them, 526 images were from patients with head and neck cancers; 342 were from thoracic site; 447 from upper abdomen and 442 from patients treated at pelvic region. The correction was shifts in 3 directions from setup with skin marks to final treatment position due to volumetric image registration. Registration was based on soft tissue anatomy when tumor was visible in both KVCT and MVCT. Otherwise, bony landmarks were used when tumors could not be identified. RESULTS The anterior to posterior (A/P) direction requires the smallest correction for all body sites. The percentage of treatment with < 3mm set-up correction in A/P direction was 82.4%-96.0% for all disease sites. In medial to lateral direction (M/L), that number was 51.5%-74.7%. The largest set-up correction occurred in the superior to inferior (S/I) direction. As a function of the body site, 68.6% of head and neck patient had <3mm shift in the S/I direction. However, that number dropped to 41.8%〠42.5% and 31.9% for thoracic, upper abdomen and pelvic sites respectively. In addition, 48.0% of pelvic tumor required >5mm shift in the S/I direction. For thoracic and abdominal tumors, there were still 34.9% and 30.7% of the treatments where >5mm shift in the S/I direction was needed. CONCLUSIONS Uniform expansion margins in all directions are often used in radiation oncology practice. Our study showed setup error was directionally dependent. Therefore, non-uniform margin should be applied. Smaller margin can be used in A/P while larger expansion needs to be given in the S/I direction.
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Liu H, Lin Y, Chen X, Wang N, Shan X, Tian H, Zhou G, Zhang F. Evaluation of colloid milium by in vivo reflectance confocal microscopy. J Eur Acad Dermatol Venereol 2012; 27:262-3. [PMID: 22385339 DOI: 10.1111/j.1468-3083.2012.04460.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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181
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Zhou G, Liu S, Shahi K, Brunicardi F. Protein Phosphatase 4 (PP4) Is A Negative Regulator of Pancreatic and Duodenal Homeobox-1 (PDX-1) Via Enhancement of PDX-1 Ubiquitination. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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182
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Liu S, Zhou G, Shahi K, Nemunaitis J, Dawson D, Fisher W, Brunicardi F. Notch1 Upregulates PDX-1 and Acts Synergistically in the Development of Islet Cell Neoplasia. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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183
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Barrio L, Zhou G, González ID, Estrella M, Hanson J, Rodriguez JA, Navarro RM, Fierro JLG. In situ characterization of Ptcatalysts supported on ceria modified TiO2 for the WGS reaction: influence of ceria loading. Phys Chem Chem Phys 2012; 14:2192-202. [DOI: 10.1039/c1cp22509j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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184
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Li S, Xu X, Zhou G. The roles of the actin-myosin interaction and proteolysis in tenderization during the aging of chicken muscle. Poult Sci 2012; 91:150-60. [DOI: 10.3382/ps.2011-01484] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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185
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Chen Y, Ouyang DS, Kang Z, Yang GP, Tan ZR, Zhou G, Yan J. Effect of a traditional Chinese medicine Liu Wei Di Huang Wan on the activities of CYP2C19, CYP2D6 and CYP3A4 in healthy volunteers. Xenobiotica 2011; 42:596-602. [PMID: 22208477 DOI: 10.3109/00498254.2011.644596] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Liu Wei Di Huang Wan (LDW), a well-known traditional Chinese medicine, is widely used for the treatment of various diseases in China. This study was designed to investigate the potential herb-drug interactions of LDW in healthy volunteers and attempted to ascertain whether the interaction might be affected by genotypes. We assessed the effect of LDW on the activities of CYP2C19, CYP2D6 and CYP3A4 in 12 Chinese healthy subjects in a single-center, controlled, non-blinded, two-way crossover clinical trial. The subject pool consisted of six extensive metabolizers with CYP2C19*1/*1 and six poor metabolizers with CYP2C19*2/*2. Placebo or 4.8 g LDW (12 pills, 0.2 g/pill, twice daily) was given to each participant for 14 continuous days with a wash-out period of 2 weeks after an oral administration of 30 mg omeprazole, 30 mg dextromethorphan hydrobromide and 7.5 mg midazolam. The activities of CYP2C19, CYP2D6 and CYP3A4 were ascertained by their respective plasma or urinary metabolic ratios on day 14 post-treatment. There is no difference in the activities of the three tested enzymes before or after a 14-day administration of LDW. LDW had no effect on the pharmacokinetic parameters of the substrates and their metabolites. A 14-day administration of LDW did not affect the activities of CYP2C19, CYP2D6 and CYP3A4. LDW is unlikely to cause pharmacokinetic interaction when it is combined with other medications predominantly metabolized by these enzymes.
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Zhou G, Liu P, He J, Dong M, Yang X, Hou B, Von Deneen KM, Qin W, Tian J. Interindividual reaction time variability is related to resting-state network topology: an electroencephalogram study. Neuroscience 2011; 202:276-82. [PMID: 22173012 DOI: 10.1016/j.neuroscience.2011.11.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 11/23/2011] [Accepted: 11/23/2011] [Indexed: 12/22/2022]
Abstract
Both anatomical and functional brain network studies have drawn great attention recently. Previous studies have suggested the significant impacts of brain network topology on cognitive function. However, the relationship between non-task-related resting-state functional brain network topology and overall efficiency of sensorimotor processing has not been well identified. In the present study, we investigated the relationship between non-task-related resting-state functional brain network topology and reaction time (RT) in a Go/Nogo task using an electroencephalogram (EEG). After estimating the functional connectivity between each pair of electrodes, graph analysis was applied to characterize the network topology. Two fundamental measures, clustering coefficient (functional segregation) and characteristic path length (functional integration), as well as "small-world-ness" (the ratio between the clustering coefficient and characteristic path length) were calculated in five frequency bands. Then, the correlations between the network measures and RT were evaluated in each band separately. The present results showed that increased overall functional connectivity in alpha and gamma frequency bands was correlated with a longer RT. Furthermore, shorter RT was correlated with a shorter characteristic path length in the gamma band. This result suggested that human RTs were likely to be related to the efficiency of the brain integrating information across distributed brain regions. The results also showed that a longer RT was related to an increased gamma clustering coefficient and decreased small-world-ness. These results provided further evidence of the association between the resting-state functional brain network and cognitive function.
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Zhou G, Cao S. [Progress on the structural and functional study of Nrf1]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 2011; 42:443-445. [PMID: 22363984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Zhang F, Yang B, Lin Y, Chen S, Zhou G, Wang G, Chen X, Zhang Y, Tian H, Yu M, Shi Z, Zhang D. Dermatitis herpetiformis in China: a report of 22 cases. J Eur Acad Dermatol Venereol 2011; 26:903-7. [DOI: 10.1111/j.1468-3083.2011.04204.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhou G, Yang W, Ju Z, Xie C, Gong H, Xu S. Dosimetric Study Of Helical Tomotherapy, Step And Shoot Intensity Modulated Radiation Therapy And Three-dimensional Conformal Radiation Therapy For Liver Cancers. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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190
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Ma L, Du L, Feng L, Zhou G, Qu B, Ren G, Xu S, Xie C, Zhang X, Li F. Clinical Observations of 121 Nasopharyngeal Carcinoma Patients Treated with Helical Tomotherapy. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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191
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Zhou G, Xie C, Ge R, Zhang H, Xu S, Dai X, Yang W. Clinical Acute Side Effects And Dosimetric Study Of Helical Tomotherapy And Conventional Intensity Modulated Radiation Therapy In 126 Postoperative Cervical Cancer Patients. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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192
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Fan L, Zhou G, Guo D, Liu YL, Chen WQ, Liu ZQ, Tan ZR, Sheng D, Zhou HH, Zhang W. The Pregnane X Receptor Agonist St Johnʼs Wort Has No Effects on the Pharmacokinetics and Pharmacodynamics of Repaglinide. Clin Pharmacokinet 2011; 50:605-11. [DOI: 10.2165/11587310-000000000-00000] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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193
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Qu J, Ren X, Hou RY, Dai XP, Zhao YC, Xu XJ, Zhang W, Zhou G, Zhou HH, Liu ZQ. The protective effect of magnesium lithospermate B against glucose-induced intracellular oxidative damage. Biochem Biophys Res Commun 2011; 411:32-9. [PMID: 21722625 DOI: 10.1016/j.bbrc.2011.06.071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 06/08/2011] [Indexed: 12/27/2022]
Abstract
OBJECTIVES To investigate the effects of magnesium lithospermate B (LAB) on intracellular reactive oxygen species (ROS) production induced by high dose of glucose or H(2)O(2), we explored the influences of LAB on the expression of heme oxygenase-1 (HO-1) and nuclear factor E2-related factor-2 (Nrf2) in HEK293T cells after treatment with high dose of glucose. MATERIALS AND METHODS The total nuclear proteins in HEK293T cells were extracted with Cytoplasmic Protein Extraction Kit. The ROS level was determined by flow cytometry. The mRNA and protein expression of HO-1 and Nrf2 were determined by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. RESULTS LAB reduced the ROS production in HEK293T cells cultured under oxidative stress. High dose of glucose enhanced the expression of HO-1 mRNA and HO-1 protein in a time-dependent manner. LAB enhanced the expression of HO-1 mRNA and HO-1 protein in a dose-dependent manner treated with high dose of glucose. The amount of Nrf2 translocation was enhanced after cells were pretreated with 50μmol/L or 100μmol/L LAB. Silencing of Nrf2 gene eliminated the enhanced expression of HO-1 protein induced by high dose of glucose plus LAB. CONCLUSIONS LAB plays an important role against glucose-induced intracellular oxidative damage. The enhanced expression of HO-1 mRNA and HO-1 protein caused by LAB is regulated via Nrf2 signal pathway.
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Jiang S, Jiang Z, Lin Y, Zhou G, Chen F, Zheng C. Effects of different rearing and feeding methods on meat quality and antioxidative properties in Chinese Yellow male broilers. Br Poult Sci 2011; 52:352-8. [DOI: 10.1080/00071668.2011.569926] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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195
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Herranz L, Vallejo I, Khvostov G, Sercombe J, Zhou G. Assessment of fuel rod performance codes under ramp scenarios investigated within the SCIP project. NUCLEAR ENGINEERING AND DESIGN 2011. [DOI: 10.1016/j.nucengdes.2011.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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196
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Liu S, Wang Z, Stehling K, Rao D, Zhou G, Maples P, Nemunaitis J, Fisher W, Brunicardi F. BIV-bi-shRNAiPDX-1 Targeting PDX-1 Therapy Prevents Hypoglycemic Death From Metastatic Insulinoma In Mice. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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197
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Zhou G, Liu S, Lin X, Feng X, Fisher W, Brunicardi F. Phosphorylation-Dependent Stabilization Of Pancreatic And Duodenal Homeobox-1 (PDX-1). J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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198
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van Pieterson L, van Abeelen FA, van Os K, Hornix E, Zhou G, Oversluizen G. Fabric opto-electronics enabling healthcare applications; a case study. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2011; 2011:8377-8379. [PMID: 22256290 DOI: 10.1109/iembs.2011.6092066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Textiles are a ubiquitous part of human life. By combining them with electronics to create electronic textile systems, new application fields emerge. In this paper, technology and applications of light-emitting textile systems are presented, with emphasis on the healthcare domain: A fabric substrate is described for electronic textile with robust interwoven connections between the conductive yarns in it. This fabric enables the creation of different forms of comfortable light therapy systems. Specific challenges to enable this use in medical applications are discussed.
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Chen Y, Xiao CQ, He YJ, Chen BL, Wang G, Zhou G, Zhang W, Tan ZR, Cao S, Wang LP, Zhou HH. Genistein alters caffeine exposure in healthy female volunteers. Eur J Clin Pharmacol 2010; 67:347-353. [PMID: 21222115 DOI: 10.1007/s00228-010-0964-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Accepted: 11/25/2010] [Indexed: 11/28/2022]
Abstract
PURPOSE This study investigated the effect of 1 g genistein daily for 14 days on caffeine-based metrics of cytochrome P4501A2 (CYP1A2), cytochrome P4502A6 (CYP2A6), N-acetyltransferase 2 (NAT2), and xanthine oxidase (XO). METHODS A single dose of 100 mg caffeine was administered once before and once on the last day of a 14-day treatment regime with 1 g genistein once daily to 18 healthy female volunteers. Urine and blood samples were collected up to 12 and 24 h, respectively, after each caffeine dose. Using high-performance liquid chromatography (HPLC), caffeine and 1,7-dimethylxanthine (17X) were quantified in plasma, whereas 17X, 1,7-dimethylurate (17U), 1-methylxanthine (1X), 1-methylurate (1U), and 5-acetylamino-6-formylamine-3-methyluracil (AFMU) were quantified in urine. Urinary metabolite ratios were calculated to assess enzyme activities and compared between administrations using analysis of variance (ANOVA). RESULTS Genistein decreased the urinary caffeine metabolite ratio used to assess CYP1A2 activity by 41% [90% confidence interval (CI) 28-51%). The urinary ratio indicating XO activity decreased by 29% (90% CI 24-32%), whereas urinary ratio for CYP2A6 activity increased by 47% (90% CI 29-66%) after 2 weeks of genistein. The NAT2 urinary caffeine metabolite ratio did not change significantly. CONCLUSIONS Two weeks of intake of 1 g genistein daily led to decreases in CYP1A2 and XO activity and an increase in CYP2A6 activity, whereas NAT2 activity did not change in healthy Chinese female volunteers. Pharmacokinetics of other substrates of the enzymes investigated here may be influenced in a similar manner.
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Tan ZR, Chen Y, Zhou G, Cao S, Peng XD, Wang YC, Peng XJ, Zhang W, Zhou HH. LC–MS–MS Quantitative Determination of Ursolic Acid in Human Plasma and Its Application to Pharmacokinetic Studies. Chromatographia 2010. [DOI: 10.1365/s10337-010-1797-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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