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Shiau C, Cao J, Gregory M, Kim Y, He S, Reeves J, Wang S, Lester NA, Su J, Wang PL, Beechem J, Hong TS, Wo JY, Ting D, Hemberg M, Hwang WL. Intercellular Mechanisms of Therapeutic Resistance at the Tumor-Stromal Interface Using Ultra High-Plex Single-Cell Spatial Transcriptomics and Genetically-Engineered Tumoroids. Int J Radiat Oncol Biol Phys 2023; 117:S101-S102. [PMID: 37784270 DOI: 10.1016/j.ijrobp.2023.06.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) There is a major gap in knowledge regarding how intercellular interactions in the tumor microenvironment (TME) mediate therapeutic resistance. Achievement of this goal has been limited by a lack of (1) spatial context in dissociated single-cell methods; (2) single-cell resolution in spatial profiling approaches; (3) high quality data and yield with FFPE patient specimens; and (4) computational methods for ligand-receptor analyses that consider both gene expression and spatial coordinates. MATERIALS/METHODS We developed an innovative spatial biology paradigm that combines cutting-edge experimental and computational methods to enable high-resolution, spatially-guided discovery of critical mediators of therapeutic resistance. We applied this approach to dissect the single-cell spatial transcriptomic landscape of untreated vs. chemoradiotherapy-treated primary human pancreatic ductal adenocarcinoma (PDAC; n = 21) using ultra-high plex spatial molecular imaging (SMI) optimized for high-sensitivity, subcellular detection of up to 6000 gene transcripts in FFPE sections-an order of magnitude greater than contemporary methods. RESULTS We recovered over 1,000,000 high-quality single cells in situ representing more than 20 distinct cell types, including epithelial, immune, endothelial, endocrine, and diverse stromal cells. We developed an optimal transport-based computational method to infer cell-cell communication at the cancer-stromal interface. Treatment with chemoradiotherapy was associated with the largest increase in fibroblast-malignant interactions. Comparing the SMI data with orthogonal single-nucleus RNA-sequencing and digital spatial profiling data, we identified CLCF1-CNTFR as the fibroblast-malignant interaction most associated with resistance to chemoradiotherapy in PDAC. CLCF1 is a gp130-family cytokine that activates Jak-STAT signaling and acts as a potent neurotrophic factor. Notably, the CLCF1-CNTRF (fibroblast-malignant) interaction has prominent pro-oncogenic effects in lung adenocarcinoma and an engineered CNTFR decoy receptor with therapeutic potential has been developed. To functionally validate the role of the CLCF1-CNTFR (fibroblast-malignant) interaction in mediating resistance to cytotoxic therapy, we created CRISPR-engineered cancer-fibroblast tumoroids and modulated expression of this ligand-receptor pair. Pancreatic cancer cell viability in the presence of 5-fluorouracil was better maintained with increased CLCF1-CNTFR signaling. CONCLUSION In this study, we integrated ultra high-plex single-cell spatial transcriptomics, optimal transport ligand-receptor predictions, and genetically-engineered stromal tumoroids to identify and validate CLCF1-CNTFR as an important intercellular mechanism of resistance to chemoradiotherapy in PDAC-pioneering a paradigm for translating single-cell spatial biology to clinical oncology.
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Affiliation(s)
- C Shiau
- Massachusetts General Hospital, Boston, MA
| | - J Cao
- Brigham and Women's Hospital, Boston, MA
| | - M Gregory
- Nanostring Technologies, Seattle, WA
| | - Y Kim
- Nanostring Technologies, Seattle, WA
| | - S He
- Nanostring Technologies, Seattle, WA
| | - J Reeves
- Nanostring Technologies, Seattle, WA
| | - S Wang
- Columbia University, New York, NY
| | - N A Lester
- Massaschusetts General Hospital, Boston, MA
| | - J Su
- Massachusetts General Hospital, BOSTON, MA
| | - P L Wang
- Massaschusetts General Hospital, Boston, MA
| | - J Beechem
- Nanostring Technologies, Seattle, WA
| | - T S Hong
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - J Y Wo
- Newton-Wellesley Hospital, Newton, MA
| | - D Ting
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA
| | - M Hemberg
- Brigham and Women's Hospital, Boston, MA
| | - W L Hwang
- Broad Institute of MIT and Harvard, Cambridge, MA
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Lim E, Reeves J, Gandhi S, Spigel D, Arrowsmith E, George D, Karlix J, Pouliot G, Hattersley M, Gangl E, James G, Thompson J, Russell D, Patel B, Kumar R, Falchook G. 1396P Phase II study of AZD4635 in combination with durvalumab or oleclumab in patients (pts) with metastatic castrate-resistant prostate cancer (mCRPC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Kong W, Nabukalu P, Cox TS, Goff V, Robertson JS, Pierce G, Lemke C, Compton R, Reeves J, Paterson AH. Comparative evolution of vegetative branching in sorghum. PLoS One 2021; 16:e0255922. [PMID: 34388196 PMCID: PMC8362987 DOI: 10.1371/journal.pone.0255922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/26/2021] [Indexed: 11/19/2022] Open
Abstract
Tillering and secondary branching are two plastic traits with high agronomic importance, especially in terms of the ability of plants to adapt to changing environments. We describe a quantitative trait analysis of tillering and secondary branching in two novel BC1F2 populations totaling 246 genotypes derived from backcrossing two Sorghum bicolor x S. halepense F1 plants to a tetraploidized S. bicolor. A two-year, two-environment phenotypic evaluation in Bogart, GA and Salina, KS permitted us to identify major effect and environment specific QTLs. Significant correlation between tillering and secondary branching followed by discovery of overlapping sets of QTLs continue to support the developmental relationship between these two organs and suggest the possibility of pleiotropy. Comparisons with two other populations sharing S. bicolor BTx623 as a common parent but sampling the breadth of the Sorghum genus, increase confidence in QTL detected for these two plastic traits and provide insight into the evolution of morphological diversity in the Eusorghum clade. Correspondence between flowering time and vegetative branching supports other evidence in suggesting a pleiotropic effect of flowering genes. We propose a model to predict biomass weight from plant architecture related traits, quantifying contribution of each trait to biomass and providing guidance for future breeding experiments.
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Affiliation(s)
- WenQian Kong
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
- Department of Statistics, University of Georgia, Athens, Georgia, United States of America
| | | | - T. Stan Cox
- The Land Institute, Salina, Kansas, United States of America
| | - Valorie Goff
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
| | - Jon S. Robertson
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
| | - Gary Pierce
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
| | - Cornelia Lemke
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
| | - Rosana Compton
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
| | - Jaxk Reeves
- Department of Statistics, University of Georgia, Athens, Georgia, United States of America
| | - Andrew H. Paterson
- Plant Genome Mapping Laboratory, University of Georgia, Athens, Georgia, United States of America
- * E-mail:
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Spring L, Han H, Hamilton E, Irie H, Santa-Maria C, Reeves J, Pan P, Shan M, Tang Y, Graham J, Hazard S, Ellisen L, Isakoff S. Neoadjuvant niraparib in patients with HER2-negative, BRCA-mutated resectable breast cancer. Breast 2021. [DOI: 10.1016/s0960-9776(21)00183-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Tan D, Farago A, Kummar S, Moreno V, Patel J, Lassen U, Solomon B, Rosen L, Leyvraz S, Reeves J, Brega N, Dima L, Childs B, Drilon A. MA11.09 Efficacy and Safety of Larotrectinib in Patients with Tropomyosin Receptor Kinase (TRK) Fusion Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Reeves J, Goedken P, Hall K, Lee S, Cwiak C. P26 Anesthesia providers perspectives on abortion provision: A qualitative study. Contraception 2020. [DOI: 10.1016/j.contraception.2020.07.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Radosevic-Robin N, Reeves J, Leroy K, Duruisseaux M, Morel P, Bhagat M, Penault-Llorca F, Damotte D, Goldwasser F, Brindel A, Cumberbatch M, Ong S, Lopez J, Warren S. Immunological signature meta-analysis across lung cancer cohorts within the NanoString Clinical Transcriptional Atlas Group (CTAG) associated with patient outcome and history. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz447.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Spring L, Shan M, Liu M, Hamilton E, Santa-Maria C, Irie H, Isakoff S, Reeves J, Ellisen L, Liem A, Naraine AM, Nangia J, Page D, Pan P, Sun K, Graham J, Han H. Clinical confirmation of higher exposure to niraparib in tumour vs plasma in patients with breast cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz240.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ballesteros-Merino C, Herz T, Church S, Widmaier M, Budco A, Medrikova D, Kanchev I, Spitzmueller A, Shaepe A, White A, Reeves J, Sullivan A, Bailey M, Jensen S, Handy J, Sanborn R, Bifulco C, Warren S, Beechem J, Fox B. Integrative combination of high-plex digital profiling techniques and cluster analysis to reveal complex immune biology in the tumour microenvironment of mesothelioma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz239.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zinzani P, Samaniego F, Jurczak W, Lech-Maranda E, Ghosh N, Anz B, Patten P, Reeves J, Leslie L, Smolewski P, Chavez J, Scarfo L, Derenzini E, Burke J, Sharman J, Kolibaba K, O'Connor O, Cheah C, Miskin H, Sportelli P, Weiss M, Fowler N. UMBRALISIB MONOTHERAPY DEMONSTRATES EFFICACY AND SAFETY IN PATIENTS WITH RELAPSED/REFRACTORY MARGINAL ZONE LYMPHOMA: A MULTICENTER, OPEN-LABEL, REGISTRATION DIRECTED PHASE 2 STUDY. Hematol Oncol 2019. [DOI: 10.1002/hon.139_2629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- P. Zinzani
- Institute of Hematology; "L. e A. Seragnoli" University of Bologna; Bologna Italy
| | - F. Samaniego
- Department of Lymphoma/ Myeloma; MD Anderson Cancer Center; Houston United States
| | - W. Jurczak
- Department of Hematology; Jagiellonian University; Krakow Poland
| | - E. Lech-Maranda
- Department of Hematology; Institute of Hematology and Transfusion Medicine; Warsaw Poland
| | - N. Ghosh
- Department of Hematologic Oncology and Blood Disorders; Levine Cancer Center; Charlotte United States
| | - B. Anz
- Tennessee Oncology; Sarah Cannon Research Institute; Chattanooga United States
| | - P. Patten
- Department of Hematology; Kings Hospital NHS Foundation Trust; London United Kingdom
| | - J. Reeves
- Florida Cancer Specialists; Sarah Cannon Research Institute; Fort Myers United States
| | - L.A. Leslie
- John Theurer Cancer Center; Hackensack University Medical Center; Hackensack United States
| | - P. Smolewski
- Department of Hematology; Copernicus Memorial Hospital; Lodz Poland
| | - J.C. Chavez
- Department of Hematology; H. Lee Moffitt Cancer Center and Research Institute; Tampa United States
| | - L. Scarfo
- IRCCS Ospedale San Raffaele; Università Vita-Salute San Raffaele; Milan Italy
| | - E. Derenzini
- Department of Hematology; European Institute of Oncology; Milan Italy
| | - J.M. Burke
- Rocky Mountain Cancer Centers; US Oncology; Aurora United States
| | - J. Sharman
- Willamette Valley Cancer Institute; US Oncology; Eugene United States
| | - K. Kolibaba
- Compass Oncology; US Oncology; Vancouver United States
| | - O.A. O'Connor
- Center for Lymphoid Malignancies; Columbia University Medical Center; New York United States
| | - C.Y. Cheah
- Department of Hematology; Sir Charles Gairdner Hospital; Perth Australia
| | - H.P. Miskin
- Drug Development; TG Therapeutics; New York United States
| | - P. Sportelli
- Drug Development; TG Therapeutics; New York United States
| | - M.S. Weiss
- Drug Development; TG Therapeutics; New York United States
| | - N.H. Fowler
- Department of Lymphoma/ Myeloma; MD Anderson Cancer Center; Houston United States
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Hinerfeld D, Fuhrman K, Church S, Zollinger D, Reeves J, Bailey C, Warren S. Differential analysis of complex immune biology in MSI and MSS colorectal tumor microenvironments using high-plex spatial resolution. Eur J Cancer 2019. [DOI: 10.1016/j.ejca.2019.01.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Han H, Hamilton E, Irie H, Isakoff S, Jelovac D, Liem A, Liu MC, Milillo A, Nangia J, Page D, Reeves J, Santa-Maria C, Duncan M, Graham JR, Chen J, Dezube BJ, Spring L. Abstract OT3-03-01: Open-label, single-arm study evaluating the antitumor activity and safety of niraparib as neoadjuvant treatment in patients with localized, HER2-negative, BRCA-mutant breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot3-03-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Neoadjuvant chemotherapy is administered to patients with operable breast cancer to downstage the tumor to allow for less extensive surgery and to provide prognostic information about drug efficacy and risk of disease recurrence. Patients who achieve a pathological complete response (pCR) following neoadjuvant treatment have a more favorable outcome than patients with residual invasive disease. Single-agent poly(ADP-ribose) polymerase (PARP) inhibitors have clinical efficacy in BRCA-mutated breast cancer. Niraparib, a potent and selective PARP1/2 inhibitor, is approved for maintenance treatment of patients with recurrent ovarian cancer and has demonstrated strong antitumor activity in in vivo studies with BRCA1-mutant breast cancer. The objective of this study is to evaluate the antitumor activity of single-agent niraparib in the neoadjuvant treatment of patients with localized, human epidermal growth factor receptor 2 (HER2)-negative, BRCAmut breast cancer.
Trial Design: This is an open-label, single-arm pilot study with a target enrollment of 20 evaluable patients. Eligible patients are those ≥18 years old with histologically-confirmed HER2-negative localized breast cancer and either a BRCA1 or BRCA2 mutation (germline or somatic) and no prior anti-cancer therapies for the current malignancy. Patients will receive 200 mg of oral niraparib once daily for 2 months, after which they may either proceed directly to surgery or receive chemotherapy at the discretion of the physician. The primary endpoint is tumor response rate based on the change in tumor volume as measured by breast MRI after 2 months of treatment with niraparib; a response is defined as ≥30% reduction of tumor volume from baseline. Secondary endpoints include pCR rate, tumor response rate based on the change in tumor volume as measured by breast ultrasound, and safety and tolerability. Data will be summarized in a descriptive nature by frequency distributions (number and percentage of patients) for categorical variables and by the mean, median, and standard deviation for continuous variables. Tumor response rate will be tabulated together with its 95% binomial exact confidence interval.
Funding: TESARO, Inc., Waltham, MA, USA sponsored the study.
Citation Format: Han H, Hamilton E, Irie H, Isakoff S, Jelovac D, Liem A, Liu MC, Milillo A, Nangia J, Page D, Reeves J, Santa-Maria C, Duncan M, Graham JR, Chen J, Dezube BJ, Spring L. Open-label, single-arm study evaluating the antitumor activity and safety of niraparib as neoadjuvant treatment in patients with localized, HER2-negative, BRCA-mutant breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT3-03-01.
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Affiliation(s)
- H Han
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - E Hamilton
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - H Irie
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - S Isakoff
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - D Jelovac
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - A Liem
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - MC Liu
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - A Milillo
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - J Nangia
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - D Page
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - J Reeves
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - C Santa-Maria
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - M Duncan
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - JR Graham
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - J Chen
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - BJ Dezube
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
| | - L Spring
- Moffitt Cancer Center-McKinley Outpatient Clinic, Tampa, FL; Tennessee Oncology, Nashville, TN; Icahn School of Medicine at Mount Sinai, New York, NY; Massachusetts General Hospital, Boston, MA; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD; Pacific Shores Medical Group, Long Beach, CA; Mayo Clinic Rochester, Rochester, MN; Memorial Health Care System, Hollywood, FL; Baylor College of Medicine, Houston, TX; Providence Portland Medical Center, Portland, OR; Florida Cancer Specialists-South, Fort Myers, FL; TESARO, Inc., Waltham, MA
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Cobran EK, Young HN, Chen RC, Chen X, Reeves J, Godley PA, Shah S. Race and Time to Receipt of Androgen Deprivation Therapy Among Men With Metastatic Prostate Cancer. J Natl Med Assoc 2018; 111:246-255. [PMID: 30389146 DOI: 10.1016/j.jnma.2018.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 10/05/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND The Medicare Modernization Act (MMA) drastically reduced reimbursement for androgen deprivation therapy (ADT) in 2005. One unintended consequence of the MMA may be an increase in the racial disparities in receipt of ADT. Given these policy changes, it becomes increasingly important to assess racial disparities in timely receipt of ADT. METHODS The purpose of this study is to evaluate the associations between race and median time to receipt of ADT among men with metastatic prostate cancer before and after the passage of the MMA. A population-based retrospective cohort was created from the Surveillance, Epidemiology, and End Results-Medicare. RESULTS A total of 1,846 African-American and 9,462 Caucasian men diagnosed with metastatic prostate cancer from 2000 through 2011 were included. An accelerated failure time regression model was used to examine factors associated with racial differences in median time to receipt of ADT. Results indicate that African-American men had a longer median time to receipt of ADT both before the MMA (Time Ratio (TR): 1.15; 95% Confidence Interval (CI) [1.05, 1.27]) and after the MMA (TR: 1.29; 95% CI [1.10, 1.53]) as compared to Caucasian men. In addition to race, men residing in South had longer median time to receipt of ADT (TR: 1.26, 1.52; 95% CI [1.01, 1.52; 1.24, 1.87] before and after MMA, respectively) compared to the Northeast region. CONCLUSION Considering the palliative benefits of ADT, it is important to develop effective strategies to address racial differences in receipt of treatment for metastatic prostate cancer.
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Affiliation(s)
- Ewan K Cobran
- University of Georgia, College of Pharmacy, Department of Clinical and Administrative Pharmacy, Division of Pharmaceutical Health Services, Outcomes, and Policy, Robert C. Wilson Pharmacy 250 West Green Street, 270B, Athens, GA 30602, USA.
| | - Henry N Young
- University of Georgia, College of Pharmacy, Department of Clinical and Administrative Pharmacy, Division of Pharmaceutical Health Services, Outcomes, and Policy, Robert C. Wilson Pharmacy 250 West Green Street, 270J, Athens, GA 30602, USA
| | - Ronald C Chen
- University of North Carolina at Chapel Hill, School of Medicine, Department of Radiation Oncology and Urology, 101 Manning Drive, Chapel Hill, NC 27514, USA
| | - Xianyan Chen
- University of Georgia, Franklin College of Arts and Sciences, Department of Statistics, Statistical Consulting Center, 310 Herty Drive, Athens, GA 30602, USA
| | - Jaxk Reeves
- University of Georgia, Franklin College of Arts and Sciences, Department of Statistics, Statistical Consulting Center, 310 Herty Drive, Athens, GA 30602, USA
| | - Paul A Godley
- University of North Carolina at Chapel Hill, School of Medicine, Department of Hematology and Oncology, 4064 Bondurant Hall, Chapel Hill, NC 27514, USA
| | - Surbhi Shah
- Evidera, Real-World Evidence, 500 Totten Pond Road, Waltham, MA 02451, USA
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Hill KD, Du W, Fleming GA, Forbes TJ, Nykanen DG, Reeves J, Du Y, Kobayashi D. Validation and refinement of the catheterization RISk score for pediatrics (CRISP score): An analysis from the congenital cardiac interventional study consortium. Catheter Cardiovasc Interv 2018; 93:97-104. [DOI: 10.1002/ccd.27837] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/23/2018] [Accepted: 07/28/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Kevin D. Hill
- Department of Pediatrics; Duke University Medical Center; Durham North Carolina
- Division of Pediatric Cardiology; Duke University Medical Center; Durham North Carolina
| | - Wei Du
- Department of Pediatrics; Children's Hospital of Michigan; Detroit Michigan
- Division of Pediatric Cardiology; Children's Hospital of Michigan; Detroit Michigan
| | - Gregory A. Fleming
- Department of Pediatrics; Duke University Medical Center; Durham North Carolina
- Division of Pediatric Cardiology; Duke University Medical Center; Durham North Carolina
| | - Thomas J. Forbes
- Department of Pediatrics; Children's Hospital of Michigan; Detroit Michigan
- Division of Pediatric Cardiology; Children's Hospital of Michigan; Detroit Michigan
| | - David G. Nykanen
- Department of Pediatrics; Arnold Palmer Hospital for Children and the University of Central Florida College of Medicine; Orlando Florida
- Division of Pediatric Cardiology; Arnold Palmer Hospital for Children and the University of Central Florida College of Medicine; Orlando Florida
| | - Jaxk Reeves
- Department of Statistics; University of Georgia; Athens Georgia
| | - Yan Du
- Department of Statistics; University of Georgia; Athens Georgia
| | - Daisuke Kobayashi
- Department of Pediatrics; Children's Hospital of Michigan; Detroit Michigan
- Division of Pediatric Cardiology; Children's Hospital of Michigan; Detroit Michigan
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Bregar A, Deshpande A, Hirsch H, Zi T, Reeves J, Sathyanarayanan S, Rueda B, Growdon W. Characterization of immune regulatory molecules B7-H4 and PD-L1 in low- and high-grade endometrial tumors. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Jochems A, El-Naqa I, Kessler M, Mayo C, Reeves J, Shruti J, Matuszak M, Ten Haken R, Faive-Fin C, Price G, Holloway L, Vinod S, Field M, Samir Barakat M, Thwaites D, Dekker A, Lambin P. PV-0240: A logistic regression model to predict 30-day mortality: difference between routine and trial data. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30683-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Jochems A, Deist T, El-Naqa I, Kessler M, Mayo C, Reeves J, Jolly S, Matuszak M, Ten Haken R, Van Soes J, Oberije C, Faivre-Finn C, Price G, Lambin P, Dekker A. EP-1596: Developing and validating a survival prediction model for NSCLC patients using distributed learning. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32031-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Kelly D, Hawdon G, Reeves J, Morris A, Cunningham M, Barrett J. Safety of intravenous metoprolol use in unmonitored wards: a single-centre observational study. Intern Med J 2016; 45:934-8. [PMID: 26109478 DOI: 10.1111/imj.12842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 06/10/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIM This study aims to examine and quantify the risks associated with the use of intravenous metoprolol on unmonitored wards. METHOD This study was a retrospective single-centre observational study from 1 January 2009 to 31 December 2013. The study hospital was a 415-bed, private hospital in Melbourne, Victoria. The study population was all patients who received intravenous metoprolol on an unmonitored ward. The primary outcome measure was the rate of serious adverse events (SAE), defined as a complication of intravenous metoprolol resulting in transfer to a critical-care environment, a medical emergency team call or death. RESULTS Six hundred and nine patients received a total of 8260 doses of intravenous metoprolol. Seven cases were identified with a SAE deemed possibly related to beta-blocker use and there was one death. All SAE were hypotension, giving an overall rate of hypotension of 7/609 or 1.1% (95% confidence interval (CI), 0.5 to 2.4%) with a rate per dose delivered of 0.8/1000 doses (95% CI 0.3 to 1.7). The death occurred in a 94-year-old woman with abdominal sepsis. After case file review, consensus opinion deemed this to be unrelated to intravenous metoprolol. CONCLUSION The use of intravenous metoprolol on unmonitored wards appears to be safe. The complication rate was low, suggesting that this may be a sensible approach to the management of in-hospital populations at risk of beta-blocker withdrawal.
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Affiliation(s)
- D Kelly
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
| | - G Hawdon
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
| | - J Reeves
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
| | - A Morris
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
| | - M Cunningham
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
| | - J Barrett
- Intensive Care, Cabrini Hospital - Malvern, Melbourne, Victoria, Australia
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19
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Zhou Y, Jiang Z, Harris EC, Reeves J, Chen X, Pazdro R. Circulating Concentrations of Growth Differentiation Factor 11 Are Heritable and Correlate With Life Span. J Gerontol A Biol Sci Med Sci 2016; 71:1560-1563. [PMID: 26774117 DOI: 10.1093/gerona/glv308] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 12/17/2015] [Indexed: 11/14/2022] Open
Abstract
Growth differentiation factor 11 (GDF11) is member of the transforming growth factor β (TGF-β) superfamily of proteins. Circulating GDF11 concentrations appear to decline with age, and its depletion is associated with cardiac hypertrophy and other morbidities. Knowledge of GDF11 regulation is limited, and the effects of natural genetic variation on GDF11 levels are currently undefined. We tested whether genetic background determines serum GDF11 concentrations using two classical inbred mouse strains: C57BL/6J (B6) and BALB/cByJ (BALB). B6 mice exhibited significantly higher GDF11 levels than BALB mice, and these strain differences were consistent throughout the life span. Overall, interactions between age and genetic background determined GDF11 concentrations, which were unaffected by sex. We then surveyed a panel of 22 genetically diverse inbred mouse strains and discovered a sixfold range in GDF11 levels at middle age. We estimated that 74.52% of phenotypic variation in GDF11 levels was attributable to genetic background. We used the Mouse Phenome Database to screen for phenotypes that correlate with GDF11. Interestingly, GDF11 levels predicted median strain life spans. This study revealed high heritability of GDF11 levels. Furthermore, our correlative data suggest that GDF11 may serve as a novel predictor of mammalian life span.
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Affiliation(s)
- Yang Zhou
- Department of Foods and Nutrition and
| | | | | | - Jaxk Reeves
- Department of Statistics, University of Georgia, Athens
| | - Xianyan Chen
- Department of Statistics, University of Georgia, Athens
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20
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Hurwitz H, Tan B, Reeves J, Xiong H, Lenz H, Hochster H, Laeufle R, Sommer N, Young J, Byrtek M, Bendell J. Interim Safety Results from Steam: a Randomized Phase 2 Trial of Sequential and Concurrent Folfoxiri–Bevacizumab (Bev) Vs Folfox–Bev for the First-Line (1L) Treatment (Tx) of Patients (Pts) with Metastatic Colorectal Cancer (Mcrc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.24] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Chi K, Higano C, Reeves J, Feyerabend S, Gravis G, Ferrero J, Jacobs C, Barnett-Griness O, Pande A, de Bono J. A Randomized Phase 3 Study Comparing First-Line Docetaxel/Prednisone (Dp) to Dp Plus Custirsen in Men with Metastatic Castration-Resistant Prostate Cancer (Mcrpc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu336.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Abstract
As the population ages and life expectancy increases, clinicians today find themselves in the wake of an ever-growing demand for high-quality aesthetic dental treatment, by increasingly informed patients. The long-term success of both cosmetic and restorative dentistry is dependent on well designed restorations and the health of the periodontal tissues. Overhanging restorations, full crown restorations with poor marginal fit, and implant-supported prosthetics with inadequate hygiene access all increase the risk for periodontal sequelae and interproximal caries. When planning restorative treatment, consideration should be given to the restorative design, the need for hygiene access and the location of intended implants. In addition, the patient's manual dexterity and ability to manipulate oral hygiene aids is a crucial consideration, as is adequate access for the hygienist to manually debride and maintain the restorations.
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23
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Knight J, Wakeman M, Reeves J. ABEL-SPORT™ TEST FOR ASSESSING OVER TRAINING SYNDROME AND DETECTING INFECTION. Br J Sports Med 2013. [DOI: 10.1136/bjsports-2013-093073.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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24
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Boivin GP, Platt KM, Corbett J, Reeves J, Hardy AL, Elenes EY, Charnigo RJ, Hunter SA, Pearson KJ. The effects of high-fat diet, branched-chainamino acids and exercise on female C57BL/6 mouse Achilles tendon biomechanical properties. Bone Joint Res 2013; 2:186-92. [PMID: 24021530 PMCID: PMC3774102 DOI: 10.1302/2046-3758.29.2000196] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objectives The goals of this study were: 1) to determine if high-fat diet
(HFD) feeding in female mice would negatively impact biomechanical
and histologic consequences on the Achilles tendon and quadriceps
muscle; and 2) to investigate whether exercise and branched-chain
amino acid (BCAA) supplementation would affect these parameters
or attenuate any negative consequences resulting from HFD consumption. Methods We examined the effects of 16 weeks of 60% HFD feeding, voluntary
exercise (free choice wheel running) and BCAA administration in
female C57BL/6 mice. The Achilles tendons and quadriceps muscles
were removed at the end of the experiment and assessed histologically
and biomechanically. Results HFD feeding significantly decreased the Achilles tendon modulus
without histological alterations. BCAA administration significantly
decreased the stiffness of Achilles tendons in the exercised normal
diet mice. Exercise partially ameliorated both the weight gain and
glucose levels in the HFD-fed mice, led to a significant decrease
in the maximum load of the Achilles tendon, and an increase in the
average fibril diameter of the quadriceps femoris muscle. There
were significant correlations between body weight and several biomechanical
properties, demonstrating the importance of controlling obesity
for maintaining healthy tendon properties. Conclusions In summary, this study showed a significant impact of obesity
and body weight on tendon biomechanical properties with limited
effects of exercise and BCAAs. Cite this article: Bone Joint Res 2013;2:186–92.
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Affiliation(s)
- G P Boivin
- Wright State University Boonshoft Schoolof Medicine, 3640 Col. Glenn Highway, Dayton, Ohio45435, USA
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25
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Reeves J, Cheng Z, Kovach J, Kleinhenz MD, Grewal PS. Quantifying soil health and tomato crop productivity in urban community and market gardens. Urban Ecosyst 2013. [DOI: 10.1007/s11252-013-0308-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Du W, Tutag Lehr V, Caverly M, Kelm L, Reeves J, Lieh-Lai M. Incidence and Costs of Adverse Drug Reactions in a Tertiary Care Pediatric Intensive Care Unit. J Clin Pharmacol 2013; 53:567-73. [DOI: 10.1002/jcph.75] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 02/14/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Wei Du
- Department of Pediatrics, School of Medicine; Wayne State University; Detroit, MI; USA
| | - Victoria Tutag Lehr
- Pharmacy Practice, Eugene Applebaum College of Pharmacy & Health Sciences; Wayne State University; Detroit, MI; USA
| | - Mary Caverly
- Critical Care Medicine; Children's Hospital of Michigan; Detroit, MI; USA
| | - Lauren Kelm
- Critical Care Medicine; Children's Hospital of Michigan; Detroit, MI; USA
| | - Jaxk Reeves
- Department of Statistics; University of Georgia; Athens, GA; USA
| | - Mary Lieh-Lai
- Department of Pediatrics, School of Medicine; Wayne State University; Detroit, MI; USA
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Greenwald S, Banks H, Birch M, Brewin M, Hu S, Kenz Z, Kruse C, Mehta D, Reeves J, Shaw S, Whiteman J. P2.20 ACOUSTIC LOCALISATION OF CORONARY ARTERY STENOSIS: WAVE PROPAGATION IN SOFT TISSUE MIMICKING GELS. Artery Res 2013. [DOI: 10.1016/j.artres.2013.10.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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28
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Shaw S, Whiteman J, Greenwald S, Kruse C, Banks H, Birch M, Kenz Z, Reeves J, Hu S, Brewin M. P2.18 TOWARDS COMPUTATIONAL DIAGNOSIS OF CORONARY ARTERY DISEASE. Artery Res 2013. [DOI: 10.1016/j.artres.2013.10.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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29
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Motzer R, Hutson T, Reeves J, Hawkins R, Guo J, Nathan P, Staehler M, de Souza P, Merchan J, Fife K, Jin J, Jones R, Uemura H, De Giorgi U, Harmenberg U, Wang J, Cella D, McCann L, Deen K, Choueiri T. Randomized, Open-Label, Phase III Trial Of Pazopanib Versus Sunitinib In First-Line Treatment Of Patients With Metastatic Renal Cell Carcinoma (MRCC): Results of the Comparz Trial. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)34325-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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30
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Pittenger LG, Frye JG, McNerney V, Reeves J, Haro J, Fedorka-Cray PJ, Harrison MA, Englen MD. Analysis of Campylobacter jejuni whole-genome DNA microarrays: significance of prophage and hypervariable regions for discriminating isolates. Foodborne Pathog Dis 2012; 9:473-9. [PMID: 22506962 DOI: 10.1089/fpd.2011.1048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Campylobacter is a leading cause of foodborne illness in humans, and improving our understanding of the epidemiology of this organism is essential. The objective of this study was to identify the genes that discriminate isolates of C. jejuni by analysis with whole-genome DNA microarrays. Statistical analyses of whole-genome data from 95 geographically diverse cattle, chicken, and human C. jejuni isolates identified 142 most significant variable genes. Of this total, 125 (88%) belonged to genomic prophage and hypervariable regions. The significance of genomic prophage and hypervariable regions in determining C. jejuni isolate genomic diversity is emphasized by these results. These genes will be useful as biomarkers and components of genotyping systems for C. jejuni to improve our understanding of the epidemiology and population genetics of this major foodborne pathogen.
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Tang X, Dong W, Griffith J, Nilsen R, Matthes A, Cheng KB, Reeves J, Schuttler HB, Case ME, Arnold J, Logan DA. Systems biology of the qa gene cluster in Neurospora crassa. PLoS One 2011; 6:e20671. [PMID: 21695121 PMCID: PMC3114802 DOI: 10.1371/journal.pone.0020671] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Accepted: 05/10/2011] [Indexed: 11/18/2022] Open
Abstract
An ensemble of genetic networks that describe how the model fungal system, Neurospora crassa, utilizes quinic acid (QA) as a sole carbon source has been identified previously. A genetic network for QA metabolism involves the genes, qa-1F and qa-1S, that encode a transcriptional activator and repressor, respectively and structural genes, qa-2, qa-3, qa-4, qa-x, and qa-y. By a series of 4 separate and independent, model-guided, microarray experiments a total of 50 genes are identified as QA-responsive and hypothesized to be under QA-1F control and/or the control of a second QA-responsive transcription factor (NCU03643) both in the fungal binuclear Zn(II)2Cys6 cluster family. QA-1F regulation is not sufficient to explain the quantitative variation in expression profiles of the 50 QA-responsive genes. QA-responsive genes include genes with products in 8 mutually connected metabolic pathways with 7 of them one step removed from the tricarboxylic (TCA) Cycle and with 7 of them one step removed from glycolysis: (1) starch and sucrose metabolism; (2) glycolysis/glucanogenesis; (3) TCA Cycle; (4) butanoate metabolism; (5) pyruvate metabolism; (6) aromatic amino acid and QA metabolism; (7) valine, leucine, and isoleucine degradation; and (8) transport of sugars and amino acids. Gene products both in aromatic amino acid and QA metabolism and transport show an immediate response to shift to QA, while genes with products in the remaining 7 metabolic modules generally show a delayed response to shift to QA. The additional QA-responsive cutinase transcription factor-1β (NCU03643) is found to have a delayed response to shift to QA. The series of microarray experiments are used to expand the previously identified genetic network describing the qa gene cluster to include all 50 QA-responsive genes including the second transcription factor (NCU03643). These studies illustrate new methodologies from systems biology to guide model-driven discoveries about a core metabolic network involving carbon and amino acid metabolism in N. crassa.
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Affiliation(s)
- Xiaojia Tang
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia, United States of America
- Statistics Department, University of Georgia, Athens, Georgia, United States of America
| | - Wubei Dong
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
| | - James Griffith
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
- College of Agricultural and Environmental Sciences, University of Georgia, Athens, Georgia, United States of America
| | - Roger Nilsen
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
| | - Allison Matthes
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
| | - Kevin B. Cheng
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
| | - Jaxk Reeves
- Statistics Department, University of Georgia, Athens, Georgia, United States of America
| | - H.-Bernd Schuttler
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia, United States of America
| | - Mary E. Case
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
| | - Jonathan Arnold
- Genetics Department, University of Georgia, Athens, Georgia, United States of America
- * E-mail:
| | - David A. Logan
- Department of Biological Sciences, Clark Atlanta University, Atlanta, Georgia, United States of America
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Leonard J, Reeves J, Ferhanoglu B, Doner KT, Eom H, Flinn IW, Raposo J, Chowhan NM, Suh C, Noga S, Tumyan G, Aung S, Hajdenberg J, Ulrich BK, Pendergrass KB, Mulligan G, Rizo A, Kussick S, Offner F. PYRAMID and LYM2034: Targeted randomized phase II studies of bortezomib with or without immunochemotherapy in newly diagnosed nongerminal center B-cell-like (GCB) diffuse large B-cell lymphoma (DLBCL), including rapid prospective non-GCB subtype identification. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.tps226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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35
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Niesvizky R, Flinn IW, Rifkin RM, Gabrail N, Charu V, Gaffar Y, Neuwirth R, Corzo D, Reeves J. Impact of baseline characteristics on efficacy and safety after bortezomib-based induction and maintenance in newly diagnosed multiple myeloma (MM) patients ineligible for transplant in the phase IIIb UPFRONT study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.8072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Oldroyd J, Levinson M, Stephenson G, Rouse A, Leeuwrik T, Reeves J, Shardey G, Hawdon G, Lefkovits J, Barrett J. A Focus Group Study Investigating Quality of Life in Octogenarians Following Cardiac Surgery. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Gaekwad J, Zhang Y, Zhang W, Reeves J, Wolfert MA, Boons GJ. Differential induction of innate immune responses by synthetic lipid a derivatives. J Biol Chem 2010; 285:29375-86. [PMID: 20634284 DOI: 10.1074/jbc.m110.115204] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Recent studies have indicated that lipopolysaccharides (LPS) isolated from particular bacterial strains can bias innate immune responses toward different signal transduction pathways thereby eliciting unique patterns of cytokines. Heterogeneity in the structure of lipid A (the active component of LPS) and possible contaminations with other inflammatory components have made it difficult to confirm these observations and dissect molecular motifs that may be responsible for modulatory properties. To address these issues, we have examined, for the first time, the ability of a range of well defined synthetic lipid As and isolated LPS and lipid A preparations to induce the production of a wide range of cytokines in three different mouse cell types. It was found that, for a given compound, the potencies of production of the various cytokines differed significantly. An additive model, in which a chemical change in the structure of a compound effects the potencies of all cytokines in the same manner, could describe the potencies of the cytokines for all compounds. Thus, no evidence was found that the structure of lipid A can modulate the pattern of cytokine production. In addition, the statistical analysis showed that the relative ordering of the potencies of the compounds was identical in the different cell types and that structural features such as the presence of a 3-deoxy-D-manno-octulosonic acid moiety, anomeric phosphate, lipid length, and acylation pattern were important for pro-inflammatory activity. Finally, it was found that transcriptional and post-transcription control mechanisms determine potencies and efficacies of cytokine production in cell-specific manners.
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Affiliation(s)
- Jidnyasa Gaekwad
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, USA
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Roman S, Cusdin FS, Fonfria E, Goodwin JA, Reeves J, Lappin SC, Chambers L, Walter DS, Clay WC, Michel AD. Cloning and pharmacological characterization of the dog P2X7 receptor. Br J Pharmacol 2009; 158:1513-26. [PMID: 19814727 DOI: 10.1111/j.1476-5381.2009.00425.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND PURPOSE Human and rodent P2X7 receptors exhibit differences in their sensitivity to antagonists. In this study we have cloned and characterized the dog P2X7 receptor to determine if its antagonist sensitivity more closely resembles the human or rodent orthologues. EXPERIMENTAL APPROACH A cDNA encoding the dog P2X7 receptor was isolated from a dog heart cDNA library, expressed in U-2 OS cells using the BacMam viral expression system and characterized in electrophysiological, ethidium accumulation and radioligand binding studies. Native P2X7 receptors were examined by measuring ATP-stimulated interleukin-1beta release in dog and human whole blood. KEY RESULTS The dog P2X7 receptor was 595 amino acids long and exhibited high homology (>70%) to the human and rodent orthologues although it contained an additional threonine at position 284 and an amino acid deletion at position 538. ATP possessed low millimolar potency at dog P2X7 receptors. 2'-&3'-O-(4benzoylbenzoyl) ATP had slightly higher potency but was a partial agonist. Dog P2X7 receptors possessed relatively high affinity for a number of selective antagonists of the human P2X7 receptor although there were some differences in potency between the species. Compound affinities in human and dog blood exhibited a similar rank order of potency as observed in studies on the recombinant receptor although absolute potency was considerably lower. CONCLUSIONS AND IMPLICATIONS Dog recombinant and native P2X7 receptors display a number of pharmacological similarities to the human P2X7 receptor. Thus, dog may be a suitable species for assessing target-related toxicity of antagonists intended for evaluation in the clinic.
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Affiliation(s)
- S Roman
- Neurology Centre of Excellence for Drug Discovery, GlaxoSmithKline Research & Development Limited, New Frontiers Science Park, Harlow, Essex, UK.
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MacVicar GR, Greco A, Reeves J, Maleski J, Holmlund J, Leopold L. An open-label, multicenter, phase I/II study of AT-101 in combination with docetaxel (D) and prednisone (P) in men with castrate-resistant prostate cancer (CRPC). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.5062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5062 Background: Antiapoptotic Bcl-2 family proteins are overexpressed in CRPC and contribute to resistance to therapy. The oral pan-Bcl-2 inhibitor AT-101 (Bcl-2, Bcl-XL, Bcl-W, Mcl-1) is active as a single agent and in combination in in vitro and in vivo tumor models and as a single agent in CRPC. The Phase 1 portion of the study determined the recommended dose for phase II to be D (75mg/m2 q3weeks) in combination with P (5mg b.i.d. on days 1–21), and AT-101 at 40mg b.i.d. on days 1–3 of each 21-day cycle, and was previously reported. Methods: Men ≥18 years of age with chemotherapy-naïve CRPC (N = 36). Safety (NCI CTCAE v3.0) and efficacy (Bubley Criteria for PSA) were assessed at 3-wk intervals. Radiological assessments were performed at 6-wk intervals for pts with soft tissue disease and bone scans were performed after cycle 6 and at the completion of therapy. Results: 36 patients (pts) have been enrolled in the study. Twenty-four (67%) pts achieved a partial response (PR) (>50% PSA decline), and 26 (72%) pts treated had at least a 30% decrease in PSA level. Nine of 19 pts (47%) with measurable disease had a PR. One PR was unconfirmed per RECIST. Thirteen pts (36%) completed >10 cycles of therapy (range 2–24) thus far. Four pts remains active. Safety data is available for 31 pts. The most common (>20%) Adverse Events (AEs) include: fatigue (68%), nausea (52%), diarrhea (45%), alopecia (32%), constipation and dysgeusia (26%), and neutropenia and vomiting (26%). Neutropenia was the only gr. 4 event occurring in more than one pt (3pts). Serious Adverse Events (SAEs) considered related were reported in 5 pts (16%). The only SAEs reported in 2 or more pts were urinary tract infection (3 pts) and deep vein thrombosis (2 pts) and none were considered related. No ileus has been reported. Conclusions: AT-101 when given in combination with D/P is well tolerated and shows preliminary evidence of efficacy in pts with CRPC. A randomized trial is ongoing. [Table: see text]
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Affiliation(s)
- G. R. MacVicar
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
| | - A. Greco
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Reeves
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Maleski
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Holmlund
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
| | - L. Leopold
- Northwestern University, Chicago, IL; Sarah Cannon Cancer Center, Nashville, TN; Florida Cancer Specialists, Ft. Myers, FL; Ascenta Therapeutics, Inc., Malvern, PA
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Poiesz B, Reeves J, McNulty W, Maleski J, Holmlund J, Leopold L. Preliminary report of an open-label, multicenter, phase I/II study of AT-101 in combination with docetaxel (D) and prednisone (P) in men with docetaxel refractory prostate cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.5145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5145 Background: Antiapoptotic Bcl-2 family proteins are overexpressed in castrate resistant prostate cancer (CRPC) and contribute to resistance to therapy. AT-101 is a pan-Bcl-2 inhibitor (Bcl-2, Bcl-XL, Bcl-W, and Mcl-1) and potent inducer of proapoptotic proteins. AT-101 is active as a single agent and in combinations with standard therapies in in vitro and in vivo tumor models, as a single agent in a phase II trial in CRPC, and in combination with D/P as first-line therapy in CRPC, as demonstrated by declines in PSA and RECIST responses. Methods: Men ≥18 years of age with docetaxel-refractory CRPC were eligible. Patients (pts) must have PSA progression per the Bubley criteria or documented disease progression while receiving prior D/P therapy. Pts (n = 40) were treated with D (75 mg/m2 day 1), P (5mg b.i.d. on days 1–21) and AT-101 40mg b.i.d. on days 1–3 of each 21-day cycle. Safety (NCI CTCAE v3.0) and efficacy (Bubley Criteria for PSA) were assessed at 3-wk intervals. Radiological assessments were performed at 6-wk intervals for pts with soft tissue disease and bone scans were performed after cycle 6 and at the completion of therapy. Results: Efficacy data was available on 34 pts. Thirty-five percent (12/34) of pts treated had at least a 30% decrease in PSA level and 18% (6/34) of pts achieved a >50% PSA decline. Twenty one of 34 pts included in this analysis had measurable disease. Five pts (24%) with measurable disease had a PR or CR by RECIST criteria and one additional patient had tumor shrinkage of 29%. Two (2) RECIST PRs are unconfirmed. Thus far, 3 pts have been on therapy for 6 months or more and 15 pts remain on study. Safety data was available on 22 pts. The most common (>20%) adverse events (AEs) included fatigue (55%), anorexia, including weight decreased (45%), diarrhea and nausea (27%), vomiting and neutropenia (23%). The grade 3/4 AEs occurring in more than 1 pt were: neutropenia (5), anemia, anorexia, dyspnea and leukopenia (2 pts each). One partial small bowel obstruction was the only related, serious adverse event (SAE) reported to date. Conclusions: This data supports that AT-101 can be administered safely with D/P in pts with CRPC who are docetaxel-refractory. Durable PSA and RECIST responses were observed. [Table: see text]
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Affiliation(s)
- B. Poiesz
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Reeves
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
| | - W. McNulty
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Maleski
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
| | - J. Holmlund
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
| | - L. Leopold
- SUNY Upstate Medical University, Syracuse, NY; Florida Cancer Specialists, Ft. Myers, FL; Hanover Medical Specialists, P.A., Wilmington, NC; Ascenta Therapeutics, Inc., Malvern, PA
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Dong W, Tang X, Yu Y, Griffith J, Nilsen R, Choi D, Baldwin J, Hilton L, Kelps K, Mcguire J, Morgan R, Smith M, Case M, Arnold J, Schüttler HB, Wang Q, Liu J, Reeves J, Logan D. Systems biology of the neurospora biological clock. IET Syst Biol 2007; 1:257-65. [PMID: 17907673 DOI: 10.1049/iet-syb:20060080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A major challenge of systems biology is explaining complex traits, such as the biological clock, in terms of the kinetics of macromolecules. The clock poses at least four challenges for systems biology: (i) identifying the genetic network to explain the clock mechanism quantitatively; (ii) specifying the clock's functional connection to a thousand or more genes and their products in the genome; (iii) explaining the clock's response to light and other environmental cues; and (iv) explaining how the clock's genetic network evolves. Here, the authors illustrate an approach to these problems by fitting an ensemble of genetic networks to microarray data derived from oligonucleotide arrays with approximately all 11 000 Neurospora crassa genes represented. A promising genetic network for the clock mechanism is identified.
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Affiliation(s)
- W Dong
- Genetics Department, University of Georgia, Athens, GA 30602, USA
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Chen H, Kennedy WK, Dorfman JH, Fincham JE, Reeves J, Martin BC. The effect of adjunctive mood stabilizers on antipsychotic utilization pattern and health resource utilization for Medicaid enrollees with schizophrenia. Curr Med Res Opin 2007; 23:1351-65. [PMID: 17559734 DOI: 10.1185/030079907x187883] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Prescribing adjunctive mood stabilizers to manage schizophrenia is prevalent, despite the lack of substantial evidence to support the long-term use of this treatment regimen. OBJECTIVE The objective of this study was to assess the impact of using adjunctive mood stabilizers on antipsychotic utilization, total health expenditures, inpatient hospitalizations, long-term care stays, and emergency room (ER) visits for patients with schizophrenia. METHODS Georgia Medicaid claims from 1999 through 2001 were analyzed to identify recipients diagnosed with schizophrenia (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM]: 295. XX). The treatment groups consisted of subjects who received combination therapy of mood stabilizers and antipsychotics (including both atypical and typical medications), while the comparison group consisted of subjects who were on antipsychotic medications without exposure to the mood stabilizers under investigation. Four treatment groups (valproate, lithium, carbamazepine, and combination mood stabilizer therapy) were formed based on the mood stabilizers patient received. Differences in annual health care use and expenditures were estimated between propensity score matched treatment and comparison groups controlling for comorbidity, prior utilization, demographic, and health provider specialty. RESULTS During the 1-year observation period, subjects in treatment groups filled an average of 200-days supply of adjunctive mood stabilizers. These adjunctive mood stabilizer recipients had significantly longer antipsychotic treatment durations than the subjects who did not have exposure to mood stabilizers (valproate + antipsychotic vs. antipsychotic only, net difference: 56.47 days, p < 0.0001; lithium + antipsychotic vs. antipsychotic only, net difference: 90.25 days, p < 0.0001; carbamazepine + antipsychotic vs. antipsychotic only, net difference: 41.27 days, p = 0.0439; multiple mood stabilizers + antipsychotic vs. antipsychotic only, net difference: 83.14 days, p < 0.0001). The intensive pharmacotherapy associated with treatment groups resulted in $900-$1300 higher pharmacy costs than the comparison groups (valproate + antipsychotic vs. antipsychotic only, net difference: $1218.43, p < 0.0001; lithium + antipsychotic vs. antipsychotic only, net difference: $985.79, p = 0.0015; carbamazepine + antipsychotic vs. antipsychotic only, net difference: $911.63, p = 0.0497; multiple mood stabilizers + antipsychotic vs. antipsychotic only, net difference: $1281.91, p < 0.0047). However, there were no statistically significant differences for total health expenditures, hospitalizations, emergency room visits, and nursing home admissions between propensity-matched treatment and control groups. CONCLUSIONS There were no differences in health care costs or utilization of ER, long-term care, and inpatient services between schizophrenia patients who did and did not receive adjunctive mood stabilizer; however, longer antipsychotic treatment durations were observed in patients receiving adjunctive mood stabilizers. Interpretation of these results is limited by the unknown selection bias between the treatment and the comparison groups and the relatively small number of patients in some treatment groups. The development of a better-controlled study to further evaluate this treatment regimen is warranted.
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Affiliation(s)
- Hua Chen
- Department of Clinical Sciences and Administration, University of Houston, Houston, TX, USA
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Huang LF, Naylor M, Pallett DW, Reeves J, Cooper JI, Wang H. The complete genome sequence, organization and affinities of carrot red leaf virus. Arch Virol 2005; 150:1845-55. [PMID: 15883658 DOI: 10.1007/s00705-005-0537-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Accepted: 02/28/2005] [Indexed: 10/25/2022]
Abstract
A sequence of 5723 nucleotides (GenBank accession number: AY695933) is reported for the RNA genome of an isolate of Carrot red leaf virus (CtRLV). The sequence is predicted to contain six large open reading frames and non coding sequences of 28 nucleotides at the 5' end, 110 nucleotides at the 3' end, and 215 nucleotides between the two main blocks of coding sequences. The 5' coding region encodes two polypeptides with calculated molecular masses (Mr) of 28.6 kDa (P0) and 68.2 kDa (P1) that overlap in different reading frames. Circumstantially, the third ORF in the 5' block is putatively translated by frameshift read-through to yield a polypeptide (P1 + P2) with a calculated Mr of 116.9 kDa. Frameshifting is predicted at a "shifty" sequence (GGGAAAC; nt 1523-1529) also found in most members of the genus Polerovirus. The C-terminal region of the 116.9 kDa polypeptide includes the consensus sequence for the viral RNA-directed RNA polymerase. The 3' block of coding sequence defines three putative polypeptides of: 23.0 kDa (P3), 21.3 kDa (P4, in a different reading frame) and 77.2 kDa (P3 + P5, by read-through of P3) respectively. From the genome structure of CtRLV, it is suggested that this virus belongs to the genus Polerovirus, rather than either the genus Luteovirus or the genus Enamovirus.
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Affiliation(s)
- L F Huang
- NERC/Centre for Ecology and Hydrology-Oxford, Oxford, UK
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45
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Naylor M, Reeves J, Cooper JI, Edwards ML, Wang H. Construction and properties of a gene-silencing vector based on Poplar mosaic virus (genus Carlavirus). J Virol Methods 2004; 124:27-36. [PMID: 15664047 DOI: 10.1016/j.jviromet.2004.10.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2004] [Revised: 10/20/2004] [Accepted: 10/21/2004] [Indexed: 10/26/2022]
Abstract
A gene-silencing vector based on a full-length genomic clone of Poplar mosaic virus (PopMV) was constructed, with coat protein and movement protein genes removed, and containing instead, the coding sequence for green fluorescent protein (GFP). This paper demonstrates that the PopMV-derived gene-silencing vector was able to silence GFP expression in GFP transgenic Nicotiana benthamiana plants. The full-length genome of an Oxford isolate of PopMV (PV275) was cloned and sequenced. A full-length PopMV clone, under transcriptional control of the 35SCaMV promoter was then constructed, and the clone was able to replicate locally in Nicotiana species. Several autonomous plant RNA and DNA viruses have been converted into vectors and implemented for virus-induced gene-silencing (VIGS) of transgenes and endogenous genes [Burton, R., Gibeaut, D., Bacic, A., Findlay, K., Roberts, K., Hamilton, A., Baulcombe, D., Fincher, G., 2000. Virus-induced silencing of a plant cellulose synthase gene. Plant Cell 12, 691-706; Dalmay, T., Horsefield, R., Braunstein, T.H., Baulcombe, D.C., 2001. SDE3 encodes an RNA helicase required for post-transcriptional gene silencing in Arabidopsis. EMBO J. 20, 2069-2077; Gossele, V., Fache, I., Meulewaeter, F., Cornelissen, M., Metzlaff, M., 2002. SVISS--a novel transient gene silencing system for gene function discovery and validation in tobacco plants. Plant J. 32, 859-866; Holzberg, S., Brosio, P., Gross, C., Pogue, G.P., 2002. Barley stripe mosaic virus-induced gene silencing in a monocot plant. Plant J. 30, 315-327; Ratcliff, F., Martin-Hernandez, A., Baulcombe, D., 2000. Tobacco rattle virus as a vector for analysis of gene function by silencing. Plant J. 25, 237-245; Ruiz, M., Vionnet, O., Baulcombe, D., 1998. Initiation and maintenance of virus-induced gene silencing. Plant Cell 10, 937-946]. The use of a virus that naturally infects trees as a gene-silencing vector has not been demonstrated before. The ability to systemically silence a plant transgene following the production of a gene-silencing signal from a locally replicating viral-construct derived from a carlavirus has not to our knowledge been shown before.
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Affiliation(s)
- M Naylor
- NERC/Centre for Ecology and Hydrology (CEH) Oxford, Mansfield Road, Oxford OX1 3SR, UK.
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Reeves J, Birch M, Munro K, Collier R. Investigation into the thermal distribution of microwave helical antennas designed for the treatment of Barrett's oesophagus. Phys Med Biol 2002; 47:3557-64. [PMID: 12408482 DOI: 10.1088/0031-9155/47/19/309] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A set of helical microwave antennas was designed to investigate their potential use in thermal therapy of Barrett's oesophagus. The antennas had a diameter of up to 3.3 mm and various lengths between 20 and 37 mm; these were designed to operate at 915 MHz. Sets of polytetrafluoroethylene (PTFE) formers were constructed to improve the repeatability and reproducibility of the helix manufacture. Small diameter copper wire was wound over the formers and connected to the coaxial cable at the inner and outer conductor junctions. The power deposition profiles of the antennas were measured in a muscle-equivalent phantom using an infrared camera. The effects of antenna length and coil spacing were characterized. It was observed that uniform temperature profiles along the antenna length were achieved with a length of wire of 99 mm +/- 2 mm. The effective heating length (length of the antenna that exhibits > 50% of the maximum temperature rise) was comparable to the antenna length. The radial penetration depth of 50% of the antenna surface temperature for the optimum 20 mm antenna was 2.5 mm from the antenna outer surface.
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Affiliation(s)
- J Reeves
- Clinical Physics Department, Royal London Hospital, UK
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Abstract
In recent years investigators have looked at the human epidermal growth factor receptor-2 (HER2), which is overexpressed in 20%-30% of breast cancer patients, with regard to its role as a prognostic and predictive factor. Although many studies have suggested that HER2 overexpression may be associated with a poor clinical outcome, other studies have not fully supported this observation. The inconsistencies between studies may be due in part to discrepancies between different HER2 testing methods. To overcome this problem, a radioimmunohistochemical method was developed to quantitatively measure HER2 overexpression levels in breast tumor samples. The application of this method demonstrated that 85% of all breast tumor samples expressed HER2 at levels greater than normal. Of these, 23% expressed HER2 at levels between 45 and 480 times greater than normal, and this was associated with poor clinical outcome. The investigation of HER2 status as a predictor of response to therapy has also yielded many conflicting results. Overall, it appears that HER2 overexpression may correlate with resistance to hormonal therapy, sensitivity to anthracycline-based chemotherapy and resistance to CMF. With the development of targeted anti-HER2 therapies, assessment of HER2 status will be important in stratifying patients to the most appropriate treatment regimens.
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MESH Headings
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/diagnosis
- Breast Neoplasms/drug therapy
- Breast Neoplasms/metabolism
- Carcinoma, Intraductal, Noninfiltrating/diagnosis
- Carcinoma, Intraductal, Noninfiltrating/metabolism
- Down-Regulation
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunohistochemistry
- Predictive Value of Tests
- Prognosis
- Radioimmunoassay
- Receptor, ErbB-2/metabolism
- Risk
- Trastuzumab
- Treatment Outcome
- Up-Regulation
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Affiliation(s)
- T Cooke
- University Department of Surgery, Royal Infirmary Glasgow, UK.
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Reeves J, McCarty G, Mimmo T. The potential of diffuse reflectance spectroscopy for the determination of carbon inventories in soils. Environ Pollut 2002; 116 Suppl 1:S277-S284. [PMID: 11833914 DOI: 10.1016/s0269-7491(01)00259-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Investigations have shown that near- and mid-infrared reflectance spectroscopy can accurately determine organic-C in soil. Efforts have also demonstrated that both can differentiate between organic and inorganic-C in soils, but the mid-infrared produces more accurate calibrations. Nevertheless, the greatest benefit would come with in situ determinations where factors such as particle size, sample heterogeneity and moisture can be important. While the variations in large (> 20 mesh) particle size can adversely effect calibration accuracy, efforts have demonstrated that the scanning of larger amounts of sample can overcome this, but the effects of moisture have not been fully explored. While under in situ conditions C distribution and sample heterogeneity are a problem for any analytical method, the rapid analysis possible with spectroscopic techniques will allow many more samples to be analyzed. In conclusion, near- and mid-infrared spectroscopy have great potential for providing the C values needed for C sequestration studies.
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Affiliation(s)
- J Reeves
- Animal manure and Byproducts Laboratory, BARC East, Beltsville, MD 20705, USA.
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Cooke T, Reeves J, Lannigan A, Stanton P. The value of the human epidermal growth factor receptor-2 (HER2) as a prognostic marker. Eur J Cancer 2001; 37 Suppl 1:S3-10. [PMID: 11167085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The prognosis for patients with breast cancer is determined by well-established pathological features associated with biological aggressiveness, histological grade, tumour size and nodal involvement. These remain the key determinants, despite the identification of numerous other potential biological markers. The use of prognostic indices, such as the Nottingham Prognostic Index (NPI), which combines and weights these factors, enables clinicians to predict outcome with a certain amount of accuracy. Approximately 20-30% of breast cancers express very high quantities of the human epidermal growth factor receptor-2 (HER2) protein and this is almost always associated with gene amplification. With the use of sensitive techniques, such as the radio-immunohistochemical method (rIHC) described herein, to quantify HER2 protein levels, up to a further 50% of such cancers will be found to express the HER2 receptor at least 4-fold higher than normal breast cells. Adding HER2 expression to the NPI helps to determine more accurately the prognosis for individual patients, particularly those with node-negative disease. Overall, the main value of HER2 measurement is likely to be in the prediction of response to therapies targeting the HER2 gene and protein.
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Affiliation(s)
- T Cooke
- University Department of Surgery, Royal Infirmary, Queen Elizabeth Building, Alexandra Parade, Glasgow G31 2ER, UK.
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