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Tang X, Zhu X, Ding B, Walton JP, Frisina RD, Su J. Age-related hearing loss: GABA, nicotinic acetylcholine and NMDA receptor expression changes in spiral ganglion neurons of the mouse. Neuroscience 2013; 259:184-93. [PMID: 24316061 DOI: 10.1016/j.neuroscience.2013.11.058] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/13/2013] [Accepted: 11/26/2013] [Indexed: 11/26/2022]
Abstract
Age-related hearing loss - presbycusis - is the number one communication disorder and most prevalent neurodegenerative condition of our aged population. Although speech understanding in background noise is quite difficult for those with presbycusis, there are currently no biomedical treatments to prevent, delay or reverse this condition. A better understanding of the cochlear mechanisms underlying presbycusis will help lead to future treatments. Objectives of the present study were to investigate GABAA receptor subunit α1, nicotinic acetylcholine (nACh) receptor subunit β2, and N-methyl-d-aspartate (NMDA) receptor subunit NR1 mRNA and protein expression changes in spiral ganglion neurons (SGN) of the CBA/CaJ mouse cochlea, that occur in age-related hearing loss, utilizing quantitative immunohistochemistry and semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) techniques. We found that auditory brainstem response (ABR) thresholds shifted over 40dB from 3 to 48kHz in old mice compared to young adults. DPOAE thresholds also shifted over 40dB from 6 to 49kHz in old mice, and their amplitudes were significantly decreased or absent in the same frequency range. SGN density decreased with age in basal, middle and apical turns, and SGN density of the basal turn declined the most. A positive correlation was observed between SGN density and ABR wave 1amplitude. mRNA and protein expression of GABAAR α1 and AChR β2 decreased with age in SGNs in the old mouse cochlea. mRNA and protein expression of NMDAR NR1 increased with age in SGNs of the old mice. These findings demonstrate that there are functionally-relevant age-related changes of GABAAR, nAChR, NMDAR expression in CBA mouse SGNs reflecting their degeneration, which may be related to functional changes in cochlear synaptic transmission with age, suggesting biological mechanisms for peripheral age-related hearing loss.
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Shen Y, Xia F, Liu L, Lin W, Liu Y, Shi M, Ren X, Ding B, Chen Y, Jia H, Wang J, Zhao G, Deng Y. Vagus nerve stimulation in 19 patients with drug-resistant epilepsy in Western China. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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103
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Shen Y, Deng Y, Lin W, Zhao G, Wang J, Xia F, Zhang Z, Feng G, Shi M, Liu L, Ren X, Ding B, Zhao Y, Chen Y, Jia H. Seizure freedom of Epilepsia Partialis Continua (EPC) with vagus nerve stimulation (VNS) therapy: A case report. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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104
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Leusink M, Onland-Moret NC, Asselbergs FW, Ding B, Kotti S, van Zuydam NR, Papp AC, Danchin N, Donnelly L, Morris AD, Chasman DI, Doevendans PAFM, Klungel OH, Ridker PM, van Gilst WH, Simon T, Nyberg F, Palmer CNA, Sadee W, van der Harst P, de Bakker PIW, de Boer A, Verstuyft C, Maitland-van der Zee AH. Cholesteryl ester transfer protein polymorphisms, statin use, and their impact on cholesterol levels and cardiovascular events. Clin Pharmacol Ther 2013; 95:314-20. [PMID: 24080640 DOI: 10.1038/clpt.2013.194] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 09/16/2013] [Indexed: 11/09/2022]
Abstract
The association of nonfunctional variants of the cholesteryl ester transfer protein (CETP) with efficacy of statins has been a subject of debate. We evaluated whether three functional CETP variants influence statin efficacy. The effect of CETP genotype on achieved levels of high-density lipoprotein cholesterol (HDLc), low-density lipoprotein cholesterol (LDLc), and total cholesterol during statin treatment was estimated by meta-analysis of the linear regression outcomes of three studies (11,021 individuals). The effect of these single-nucleotide polymorphisms (SNPs) on statin response in protecting against myocardial infarction (MI) was estimated by meta-analysis of statin × SNP interaction terms from logistic regression in five studies (16,570 individuals). The enhancer SNP rs3764261 significantly increased HDLc by 0.02 mmol/l per T allele (P = 6 × 10(-5)) and reduced protection against MI by statins (interaction odds ratio (OR) = 1.19 per T allele; P = 0.04). Focusing on functional CETP variants, we showed that in carriers of the rs3764261 T variant, HDLc increased more during statin treatment, and protection against MI by statins appeared to be reduced as compared with those in noncarriers.
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105
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Cragin A, Ding B, Pomerantz J. Emergent Features Help Resolve Ambiguous Apparent Motion. J Vis 2013. [DOI: 10.1167/13.9.827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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106
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McClung MR, Lewiecki EM, Geller ML, Bolognese MA, Peacock M, Weinstein RL, Ding B, Rockabrand E, Wagman RB, Miller PD. Effect of denosumab on bone mineral density and biochemical markers of bone turnover: 8-year results of a phase 2 clinical trial. Osteoporos Int 2013; 24:227-35. [PMID: 22776860 PMCID: PMC3536967 DOI: 10.1007/s00198-012-2052-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 04/30/2012] [Indexed: 11/26/2022]
Abstract
UNLABELLED In a phase 2 study, continued denosumab treatment for up to 8 years was associated with continued gains in bone mineral density and persistent reductions in bone turnover markers. Denosumab treatment was well tolerated throughout the 8-year study. INTRODUCTION The purpose of this study is to present the effects of 8 years of continued denosumab treatment on bone mineral density (BMD) and bone turnover markers (BTM) from a phase 2 study. METHODS In the 4-year parent study, postmenopausal women with low BMD were randomized to receive placebo, alendronate, or denosumab. After 2 years, subjects were reallocated to continue, discontinue, or discontinue and reinitiate denosumab; discontinue alendronate; or maintain placebo for two more years. The parent study was then extended for 4 years where all subjects received denosumab. RESULTS Of the 262 subjects who completed the parent study, 200 enrolled in the extension, and of these, 138 completed the extension. For the subjects who received 8 years of continued denosumab treatment, BMD at the lumbar spine (N = 88) and total hip (N = 87) increased by 16.5 and 6.8 %, respectively, compared with their parent study baseline, and by 5.7 and 1.8 %, respectively, compared with their extension study baseline. For the 12 subjects in the original placebo group, 4 years of denosumab resulted in BMD gains comparable with those observed during the 4 years of denosumab in the parent study. Reductions in BTM were sustained over the course of continued denosumab treatment. Reductions also were observed when the placebo group transitioned to denosumab. Adverse event profile was consistent with previous reports and an aging cohort. CONCLUSION Continued denosumab treatment for 8 years was associated with progressive gains in BMD, persistent reductions in BTM, and was well tolerated.
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MESH Headings
- Aged
- Alkaline Phosphatase/blood
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Biomarkers/blood
- Bone Density/drug effects
- Bone Density Conservation Agents/administration & dosage
- Bone Density Conservation Agents/adverse effects
- Bone Density Conservation Agents/pharmacology
- Bone Density Conservation Agents/therapeutic use
- Bone Remodeling/drug effects
- Collagen Type I/blood
- Denosumab
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Female
- Hip Joint/physiopathology
- Humans
- Lumbar Vertebrae/physiopathology
- Middle Aged
- Osteoporosis, Postmenopausal/blood
- Osteoporosis, Postmenopausal/drug therapy
- Osteoporosis, Postmenopausal/physiopathology
- Peptides/blood
- Treatment Outcome
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107
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Wu FR, Liu Y, Shang MB, Yang XX, Ding B, Gao JG, Wang R, Li WY. Differences in H3K4 trimethylation in in vivo and in vitro fertilization mouse preimplantation embryos. GENETICS AND MOLECULAR RESEARCH 2012; 11:1099-108. [DOI: 10.4238/2012.april.27.9] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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108
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Ding B, Pirone A, Lenzi C, Baglini A, Romboli I. Effect of hen diet supplemented with 25-OH-D 3
on the development of small intestinal morphology of chick. JOURNAL OF ANIMAL AND FEED SCIENCES 2011. [DOI: 10.22358/jafs/66197/2011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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109
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Wu XX, Ding B, Chang RN, Zou HA, Zhu ZZ. A new complex of Mn(II) with highly flexible bistriazole ligand 1,2-bis(1,2,4-triazole-l-yl)ethane: Synthesis and crystal structure. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411050137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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110
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Ostberg T, Gorgen S, Salomonsson S, Ding B, Eliasson H, Elfving A, Malarstig A, Alfredsson L, Klareskog L, Hamsten A, Olsson T, Padukov L, Axelsson T, Gadler F, Jonzon A, Sonesson SE, Kockum I, Wahren-Herlenius M. HLA-DRB1*04 is a novel fetal susceptibility allele in congenital heart block. Ann Rheum Dis 2011. [DOI: 10.1136/ard.2010.148965.7] [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]
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111
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Orozco G, Barton A, Eyre S, Ding B, Worthington J, Ke X, Thomson W. HLA-DPB1-COL11A2 and three additional xMHC loci are independently associated with RA in a UK cohort. Genes Immun 2011; 12:169-75. [PMID: 21293383 DOI: 10.1038/gene.2010.57] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The aim of this study was to investigate the complex association pattern of the extended major histocompatibility complex (xMHC) region with rheumatoid arthritis (RA) susceptibility to identify effects independent of HLA-DRB1. A total of 1804 RA cases and 1474 controls were included. High-resolution HLA-DRB1 typing was performed. Subjects were genotyped for 1546 single-nucleotide polymorphisms (SNPs) using Affymetrix GeneChip 500 K (Santa Clara, CA, USA) as part of the Wellcome Trust Case Control Consortium Study. Statistical analysis was carried out using PLINK. To avoid confounding by RA-associated HLA-DRB1 alleles, we analyzed xMHC SNPs using a data set with pairwise matching of cases and controls on DRB1 genotypes. A total of 594 case-control pairs with identical DRB1 genotypes were identified. After this adjustment, 104 SNPs remained significantly associated with RA (P<0.05), suggesting that additional RA loci independent of HLA-DRB1 can be found in the xMHC region. Of these, four loci showed the strongest associations with RA (P<0.005): ZNF391, the olfactory receptor (OR) gene cluster, C6orf26-RDBP and HLA-DPB1-COL11A2. An additional locus mapping to the BTN (butyrophilin) cluster showed independent association with RA in anti-cyclic citrullinated peptide-positive patients exclusively. We have validated the previously described independent association of the HLA-DPB1-COL11A2 locus with RA. In addition, association with three novel independent RA loci in the xMHC region (ZNF391, OR2H1 and C6orf26-RDBP) has been detected.
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112
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Yao WW, Zhang H, Ding B, Fu T, Jia H, Pang L, Song L, Xu W, Song Q, Chen K, Pan Z. Rectal cancer: 3D dynamic contrast-enhanced MRI; correlation with microvascular density and clinicopathological features. Radiol Med 2011; 116:366-74. [PMID: 21298356 DOI: 10.1007/s11547-011-0628-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2010] [Accepted: 07/16/2010] [Indexed: 01/27/2023]
Abstract
PURPOSE The primary aim of this prospective study was to evaluate the relationship between three-dimensional dynamic contrast-enhanced magnetic resonance (3D-DCE-MR) imaging parameters and clinicopathological features of rectal cancer and assess their potential as new radiological prognostic predictors. MATERIALS AND METHODS Three-dimensional DCE-MR was performed on 26 cases of pathologically proved rectal adenocarcinoma 1 week prior to operation. Data were analysed to calculate transfer constant (Ktrans), leakage space (Ve) and rate constant (Kep) of both tumour and normal rectal wall. Microvessel density (MVD) was evaluated by immunohistochemical staining of surgical specimens. All findings were analysed prospectively and correlated with tumour/node/metastasis (TNM) staging, Dukes staging, histological grading, presence of lymph node metastasis, serosal involvement and MVD. RESULTS Mean Ktrans, Ve and Kep for tumours were as follows: Ktrans 7.123±3.850/min, Ve 14.2±3.0%, Kep 49.446±20.404/min, revealing the significant difference between the tumour and normal rectal wall (p=0.001). There was a significant difference for Ktrans not only between patients with and without lymphatic involvement (p=0.000), but also among Dukes staging (p=0.04) and pTNM staging (p=0.03). Kep showed moderate correlation with TNM stages (r=0.479, p=0.02). Ve and MVD revealed no significant correlation with the clinicopathological findings described above (p>0.05). CONCLUSION Owing to the moderate and strong relationship between Ktrans and clinicopathological elements, Ktrans might be the prognostic indicator of rectal cancer. Threedimensional DCE high-resolution MR imaging provides a competing opportunity to assess contrast kinetics.
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113
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Shan ZY, Chen YY, Teng WP, Yu XH, Li CY, Zhou WW, Gao B, Zhou JR, Ding B, Ma Y, Wu Y, Liu Q, Xu H, Liu W, Li J, Wang WW, Li YB, Fan CL, Wang H, Guo R, Zhang HM. A study for maternal thyroid hormone deficiency during the first half of pregnancy in China. Eur J Clin Invest 2009; 39:37-42. [PMID: 19087128 DOI: 10.1111/j.1365-2362.2008.02055.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Maternal thyroid hormone deficiency is the most common disorder of thyroid function during pregnancy and can influence the outcome for mother and foetus. The purpose of this study was to investigate the prevalence of thyroid hormone deficiency during the first half of pregnancy in iodine sufficient areas of China. MATERIALS AND METHODS Four thousand eight hundred pregnant women from 10 hospitals during the first 20 weeks of gestation were enrolled in this study. All sera obtained from pregnant women were measured for thyrotropin, free thyroxine and thyroid peroxidase antibody. Screening for thyroid hormone deficiency was performed on pregnant women using gestational age-specific reference intervals or non-pregnant population reference intervals. RESULTS With gestational age-specific reference intervals as the criterion, the prevalence of subclinical hypothyroidism at 4, 8, 12,16 and 20 weeks of gestation was 4.59%, 6.15%, 4.68%, 4.53% and 5.96%, respectively, and the prevalence of hypothyroxinaemia was 3.69%, 1.11%, 2.92%, 1.29% and 2.29%, respectively. Different prevalence was obtained when non-pregnant population reference intervals was used as the criterion. If non-pregnant population reference intervals were used, the percentage of potentially misclassified cases of subclinical hypothyroidism were 0.18%, 2.85%, 4.1%, 3.24%, and 3.21%, respectively, and 3.45%, 0.66%, 2.34%, 1.29%, and 1.83%, respectively, in potentially misclassified cases of hypothyroxinaemia. CONCLUSIONS The percentage of potentially misclassified cases of subclinical hypothyroidism and hypothyroxinaemia in pregnant women decreased by using the gestational age-specific reference intervals as a diagnostic criteria during the first half of pregnancy.
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114
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Bäckdahl L, Guo JP, Jagodic M, Becanovic K, Ding B, Olsson T, Lorentzen JC. Definition of arthritis candidate risk genes by combining rat linkage-mapping results with human case-control association data. Ann Rheum Dis 2008; 68:1925-32. [PMID: 19066175 DOI: 10.1136/ard.2008.090803] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To define genomic regions that link to rat arthritis and to determine the potential association with rheumatoid arthritis (RA) of the corresponding human genomic regions. METHODS Advanced intercross lines (AIL) between arthritis susceptible DA rats and arthritis resistant PVG.1AV1 rats were injected with differently arthritogenic oils to achieve an experimental situation with substantial phenotypic variation in the rat study population. Genotyping of microsatellite markers was performed over genomic regions with documented impact on arthritis, located on rat chromosomes 4, 10 and 12. Linkage between genotypes and phenotypes were determined by R/quantitative trait loci (QTL). Potential association with RA of single nucleotide polymorphisms (SNPs) in homologous human chromosome regions was evaluated from public Wellcome Trust Case Control Consortium (WTCCC) data derived from 2000 cases and 3000 controls. RESULTS A high frequency of arthritis (57%) was recorded in 422 rats injected with pristane. Maximum linkage to pristane-induced arthritis occurred less than 130 kb from the known genetic arthritis determinants Ncf1 and APLEC, demonstrating remarkable mapping precision. Five novel quantitative trait loci were mapped on rat chromosomes 4 and 10, with narrow confidence intervals. Some exerted sex-biased effects and some were linked to chronic arthritis. Human homologous genomic regions contain loci where multiple nearby SNPs associate nominally with RA (eg, at the genes encoding protein kinase Calpha and interleukin 17 receptor alpha). CONCLUSIONS High-resolution mapping in AIL populations defines limited sets of candidate risk genes, some of which appear also to associate with RA and thus may give clues to evolutionarily conserved pathways that lead to arthritis.
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115
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Bhat S, Savage P, Li C, Taotafa U, Ding B, Guan Q, Milner SM. 139
Antimicrobial Activity of Synthetic Cationic Steroids on Burn Wound Pathogens. Wound Repair Regen 2008. [DOI: 10.1111/j.1067-1927.2005.130216aq.x] [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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116
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Wong MD, Hershman D, Morrison VA, Ding B, Malin JL. Use of colony stimulating factors (CSF) for primary prophylaxis of chemotherapy-induced neutropenia in community oncology practices to reduce risk of febrile neutropenia (FN). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.17013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
17013 Background: In addition to proof of efficacy from randomized controlled trials (RCTs), health care decision makers need data on therapy effectiveness, specifically how well an intervention performs in routine practice. While the efficacy of filgrastim and pegfilgrastim in preventing FN has been established in RCTs, their effectiveness in community practice has not been studied. Methods: Data were obtained from medical records of patients treated with chemotherapy for a variety of malignancies in a random sample of 99 US community oncology practices in 2001 and 2003 (before and after FDA approval of pegfilgrastim in 2002). Patients receiving filgrastim or pegfilgrastim and, in 2003, every third patient not treated with a CSF, were consecutively sampled(n=6148). Only those receiving chemotherapy on 3–4 wk cycles were included in this analysis (n=3,744). Primary prophylaxis was defined as receipt of CSF within 3 days of the 1st cycle of chemotherapy. Multivariable logistic regression, adjusted for patient and treatment characteristics and weighted for patient sampling was used to estimate the odds of FN in patients who received primary prophylaxis versus those who were managed expectantly, i.e. patients who received CSF later during chemotherapy or not at all. Results: Of 3744 patients in the study population, 2966 (79%) received a CSF some time during their chemotherapy treatment. In 2003, approximately 18% of patients received CSF primary prophylaxis. Among patients who did not receive primary prophylaxis but received a CSF later during the treatment, 38% initiated CSF in the 1st cycle after day 3. In a multivariate model, increased risk of FN was associated with receiving myelosuppressive chemotherapy (OR 2.19; 95% CI 1.05–4.56) and having 3 or more drugs (vs. 1) in the regimen (OR 2.13; 95% CI 1.09–4.17). Adjusting for patient and treatment characteristics, the relative odds of FN in patients who received CSF primary prophylaxis was 0.70 (95% CI 0.50–0.98) compared with patients who either received CSF later or not at all. Conclusions: In this community practice setting, patients who received CSF primary prophylaxis had significantly lower odds of developing FN than patients managed expectantly. No significant financial relationships to disclose.
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Alexis J, Che W, Ding B, Ito S, Wang N, McClain C, Korshunov V, Berk B, Yan C, Abe J. Bcr Serine/Threonine Kinase Enhances Angiotensin Ii–Mediated Nuclear Factor Kb Transcriptional Activation in Vascular Smooth Muscle Cells via Inhibition of Peroxisome Proliferator–Activated Receptor Γ. J Investig Med 2007. [DOI: 10.1177/108155890705500219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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118
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Alexis J, Che W, Ding B, Ito S, Wang N, McClain C, Korshunov V, Berk BC, Yan C, Abe J. 19 BCR SERINE/THREONINE KINASE ENHANCES ANGIOTENSIN II-MEDIATED NUCLEAR FACTOR κB TRANSCRIPTIONAL ACTIVATION IN VASCULAR SMOOTH MUSCLE CELLS VIA INHIBITION OF PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR γ. J Investig Med 2007. [DOI: 10.1136/jim-55-02-19] [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]
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119
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Ozer H, Mirtsching B, Rader M, Ding B, Truscinski D, Dreiling L. Final results of a large, community-based, prospective study evaluating the impact of first and subsequent cycle pegfilgrastim on neutropenic events in patients receiving myelosuppressive chemotherapy. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.8569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
8569 Background: Neutropenia is the major dose-limiting complication of myelosuppressive chemotherapy (CT). The Awareness of Neutropenia in CT (ANC) Study Group has prospectively documented cycle 1 febrile neutropenia (FN) in 8% of patients (pts) receiving CT with or without growth factor support in community practice. Our study was conducted to assess the impact of first and subsequent cycle pegfilgrastim use on neutropenic events in pts receiving CT in community practice. Interim data were previously reported (Ozer ASCO 2005). Methods: Pts ≥18 years with cancers other than leukemia or MDS were eligible, including pts with major comorbidities. Key exclusion criteria of this open-label study were weekly CT or concurrent radiotherapy (RT). Pts were to receive pegfilgrastim 6 mg ∼24 hours after CT (min 4 cycles planned). Primary endpoints were neutropenic hospitalization and CT dose delays and reductions; additionally, FN (absolute neutrophil count <1×109/L with temperature ≥38.2oC) was measured. Results: 319 centers enrolled 2,249 pts (2,500 planned); 2,112 patients who received CT and pegfilgrastim after proper consent were included in final analyses. Most pts were women (75%). Major tumor types included: breast (46%), lung (16%), and ovarian (8%) cancers, and lymphoma (18%). 36% of pts were ≥65 years (mean age [SD]: 59 [12.8]), 55% had stage 3/4 or extensive disease, 23% received prior CT, 17% received prior RT, and 27% had a significant comorbidity. Neutropenic complications occurred infrequently (table). FN was experienced by 3.6% (95% CL: 2.8, 4.5) of pts in cycle 1 and in 6.3% (5.3, 7.5) in all cycles. Serious adverse events were consistent with toxicities observed in pts receiving CT. Conclusions: Pts treated in community practice receiving pegfilgrastim in every cycle of myelosuppressive CT experienced a low incidence of neutropenic complications and alterations in CT dose and schedule due to neutropenia. [Table: see text] [Table: see text]
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Nordman S, Ding B, Ostenson CG, Kärvestedt L, Brismar K, Efendic S, Gu HF. Leu7Pro polymorphism in the neuropeptide Y (NPY) gene is associated with impaired glucose tolerance and type 2 diabetes in Swedish men. Exp Clin Endocrinol Diabetes 2005; 113:282-7. [PMID: 15926114 DOI: 10.1055/s-2005-865650] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The neuropeptide Y (NPY) is a neuropeptide with a role in the regulation of satiety and energy balance of body weight, insulin release, cardiovascular and central endocrine systems. In order to evaluate whether the NPY gene variations contribute to development of type 2 diabetes (T2DM), we have performed a genetic association study for Leu7Pro (T1128 C) polymorphism of the NPY gene in impaired glucose tolerance (IGT) and T2DM. Genotyping experiments for this non-synonymous single nucleotide polymorphism (SNP) in 263 patients with T2DM, 309 subjects with IGT and 469 non-diabetic healthy individuals in Swedish Caucasians were performed by using Dynamic Allele Specific Hybridisation (DASH). We found that the frequencies of the "risk" allele C in the subjects with IGT and the patients with T2DM in Swedish men were 13 % (p = 0.002, OR = 3.70, 1.65 - 8.29 95 % CI) and 10 % (p = 0.007, OR = 4.80, 1.47 - 11.33 95 % CI) respectively, which were significantly higher than the C allele frequency in non-diabetic controls (6 %). Furthermore, we found that the carriers with TC and CC genotypes in the subjects with IGT in Swedish men had significantly higher fasting plasma glucose in comparison with the TT carriers (5.6 +/- 0.7 mmol/l vs. 5.2 +/- 0.7 mmol/l, p = 0.021). The present study thus provides the evidence that Leu7Pro polymorphism in the NPY gene is associated with IGT and T2DM in Swedish men, and indicates that the NPY gene variations contribute to development of T2DM. Questions of gender specificity may be explained by genetic backgrounds, sense of coherence for stress and other factors in environment.
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121
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Ozer H, Mirtsching B, Rader M, Ding B, Dansey R. Impact of 1st and subsequent cycle pegfilgrastim on neutropenic events in patients receiving myelosuppressive chemotherapy: Preliminary results of FIRST, a prospective community-based study. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.8118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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122
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Zhou L, Ma W, Yang Z, Zhang F, Lu L, Ding Z, Ding B, Ha T, Gao X, Li C. VEGF165 and angiopoietin-1 decreased myocardium infarct size through phosphatidylinositol-3 kinase and Bcl-2 pathways. Gene Ther 2004; 12:196-202. [PMID: 15510173 DOI: 10.1038/sj.gt.3302416] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Angiogenic growth factors, vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang1) could decrease myocardial infarct size, which was assumed to be related with newly formed capillaries. We doubted that these capillaries could do this solely and the potential protective mechanisms of VEGF and Ang1 on myocardium need to be evaluated. Three types of adenoviruses encoding human VEGF(165) (Ad-VEGF(165)), human angiopoietin-1 (Ad-Ang1) and green fluorescent protein (Ad-GFP, as a parallel control) were constructed. Experiments were taken both in vitro and in vivo. As in vitro, the antiapoptosis effect of VEGF(165), Ang1 and VEGF(165)+Ang1 on cardiac myoblasts was observed, which seemed to be related with the activation of phosphatidylinositol-3 kinase and Bcl-2 pathways. As in vivo, adenoviruses were intramyocardially injected immediately after the ligation of the left anterior descending coronay arteries in rats. The results showed positive effect of VEGF(165), Ang1 and VEGF(165)+Ang1 on decreasing the myocardial infarct size at the 7th day. Myocardial PI-3K activity and Bcl-2 expression were elevated relatively at the 3rd day. The protective effect of VEGF(165) and Ang1 on the myocardium may broaden their functional research and contribute to their clinical use in the future.
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Yang Y, Wang Y, Li S, Xu Z, Li H, Ma L, Fan J, Bu D, Liu B, Fan Z, Wu G, Jin J, Ding B, Zhu X, Shen Y. Mutations in SCN9A, encoding a sodium channel alpha subunit, in patients with primary erythermalgia. J Med Genet 2004; 41:171-4. [PMID: 14985375 PMCID: PMC1735695 DOI: 10.1136/jmg.2003.012153] [Citation(s) in RCA: 557] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Primary erythermalgia is a rare autosomal dominant disease characterised by intermittent burning pain with redness and heat in the extremities. A previous study established the linkage of primary erythermalgia to a 7.94 cM interval on chromosome 2q, but the causative gene was not identified. We performed linkage analysis in a Chinese family with primary erythermalgia, and screened the mutations in the two candidate genes, SCN9A and GCA, in the family and a sporadic patient. Linkage analysis yielded a maximum lod score of 2.11 for both markers D2S2370 and D2S2330. Based on critical recombination events in two patients in the family, we further limited the genetic region to 5.98 cM between D2S2370 and D2S2345. We then identified two missense mutations in SCN9A in the family (T2573A) and the sporadic patient (T2543C). Our data suggest that mutations in SCN9A cause primary erythermalgia. SCN9A, encoding a voltage-gated sodium channel alpha subunit predominantly expressed in sensory and sympathetic neurones, may play an important role in nociception and vasomotor regulation.
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Yang Y, Ding B, Wang K, Bu D, Tu P, Zhu X. DNA-based prenatal diagnosis in a Chinese family with xeroderma pigmentosum group A. Br J Dermatol 2004; 150:1190-3. [PMID: 15214909 DOI: 10.1111/j.1365-2133.2004.05938.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Xeroderma pigmentosum (XP) is a group of autosomal recessive diseases characterized by hypersensitivity to ultraviolet rays. Among its eight complementation groups, XP group A (XPA) is the most severe type. The XPAC gene has been identified as the defective gene in XPA patients. OBJECTIVES To examine genomic DNA from a Chinese family with XPA, to determine the XPAC mutation and, after genetic counselling, to undertake DNA-based prenatal diagnosis in a subsequent pregnancy. METHODS Fetal DNA was extracted from amniotic fluid and used to amplify exon 5 of XPAC containing the potential mutation. Direct sequencing and restriction endonuclease digestion were used for prenatal diagnosis. RESULTS We identified a homozygous nonsense XPAC mutation of 631C-->T, which results in an R211X mutation in XPA protein, in the proband. Both her parents are heterozygous. Prenatal diagnosis demonstrated a heterozygous sequence predicting an unaffected child, and a healthy girl was born. CONCLUSIONS These data provide the first example of a DNA-based prenatal test for genodermatosis in China.
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Abstract
Neuropeptide Y (NPY) is a member of the pancreatic polypeptide family. It plays a critical role in the regulation of satiety, reproduction, the central endocrine and cardiovascular systems. The T1128C polymorphism of human NPY gene has been shown to be associated with many cardiovascular diseases. The allele frequency of the 1128C was investigated in 6626 subjects from Europe, North-America, South-America, Asia and the Middle-East. The 1128C allele was observed in all populations of European descent and the Israeli population, with a mean frequency of about 4%. The allele frequency showed a geographical north to south gradient of decreasing frequency. The highest allele frequencies were found in Nordic countries. The NPY 1128C allele might originate in the north of Europe, and then spread to neighboring regions.
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