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Heiden B, Eaton D, Chang S, Yan Y, Schoen M, Meyers B, Kozower B, Puri V. Comparison of National Comprehensive Cancer Network and American College of Surgeons Commission on Cancer Lymph Node Sampling Guidelines for Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2021.10.171] [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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2
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Agabalogun T, Heiden B, Spraker M, Badiyan S, Vlacich G, Morgensztern D, Waqar S, Kozower B, Meyers B, Robinson C, Puri V, Samson P. Post-Operative Radiation Therapy for Non-Small Cell Lung Cancer Patients With Higher Positive to Examined Lymph Node Ratio is Associated With Improved Overall Survival. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1216] [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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3
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Samson P, Perez M, Carpenter L, Roach M, Bradley J, Kozower B, Meyers B, Puri V, Robinson C. Comparing Prospective Quality of Life Assessments Among Clinical Stage I Non-Small Cell Lung Cancer Patients Receiving Surgery versus Stereotactic Body Radiation Therapy at One Year. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1170] [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: 11/29/2022]
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Samson P, Roach M, Bradley J, Carpenter L, Kozower B, Meyers B, Puri V, Robinson C. Increased Rates of Serious Adverse Events among Stage I Non-small Cell Lung Cancer Surgical Patients who were Predicted to Receive Stereotactic Body Radiation Therapy by Treatment Allocation Modeling. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1185] [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]
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Chagas C, Heydinger E, Meyers B. Improving Nutrition/Health Literacy in Children and Parents About Lipids in a Primary Care Clinic. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.175] [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: 10/23/2022]
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Samson P, Robinson C, Kennedy W, Gabani P, Roach M, Bradley J, Kozower B, Puri V, Meyers B. Treatment Allocation Modeling and Risk-Stratified Outcomes for Clinical Stage I Non-small Cell Lung Cancer Patients Receiving Surgery versus Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.01.023] [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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Samson P, Roach M, Bradley J, Carpenter L, Kozower B, Meyers B, Puri V, Robinson C. Comprehensive Baseline Clinical Assessments in Stage I Non-Small Cell Lung Cancer Patients May Facilitate Treatment Allocation Between Stereotactic Body Radiation Therapy and Surgery. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.170] [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: 10/28/2022]
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Samson P, Kozower B, Roach M, DeWees T, Carpenter L, Gal K, Bradley J, Meyers B, Puri V, Robinson C, Crabtree T. Development of a Prospective Clinical Database for Stage I Non–small Cell Lung Cancer Patients to Identify High-Risk Individuals Appropriate for Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1782] [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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Samson P, Keogan K, Robinson C, Bradley J, Roach M, Crabtree T, Kozower B, Puri V, Meyers B. Treatment Allocation Modeling for Clinical Stage I Non–small Cell Lung Cancer Patients to Facilitate the Shared Decision Making Process for Stereotactic Body Radiation Therapy Versus Surgical Resection. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1781] [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: 12/01/2022]
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Edwards L, Meyers B, Heydinger E, Navarre H, Josiah K, Belton A, Riojas L, Knackstedt A, Brewer L. A Quick and Effective Approach to Nutrition Education and Health Literacy in Primary Care. J Acad Nutr Diet 2017. [DOI: 10.1016/j.jand.2017.06.219] [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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Meyers B, Kim Y, Liceaga A, Lemenager R. Effects of stepwise dry/wet aging on physical, chemical and quality attributes of beef loins. Meat Sci 2016. [DOI: 10.1016/j.meatsci.2015.08.082] [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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Biagi J, Burkes R, Brezden-Masley C, Zbuk K, Meyers B, Levine O, Spadafora S, Welch S, Davdani S, Hopman W, Booth C, Goodwin R. Reasons for Delay in Time to Initiation of Adjuvant Chemotherapy for Colon Cancer: a Multi-Institution Study. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.79] [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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Londono F, Meyers B, Vlachos P, Segers P, Chirinos J. P6.8 EFFECT OF ORGANIC NITRATES ON INTRAVENTRICULAR PRESSURE GRADIENTS IN HEART FAILURE PATIENTS WITH PRESERVED EJECTION FRACTION. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.159] [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: 10/24/2022] Open
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Yan TD, Cao C, D'Amico TA, Demmy TL, He J, Hansen H, Swanson SJ, Walker WS, Casali G, Dunning J, Shackcloth M, Shah R, Stamenkovic S, Routledge T, Walker W, Woo E, Woolley S, Baste JM, Gossot D, Roviaro G, Solaini L, Loscertales J, Gonzalez-Rivas D, Decaluwe H, Decker G, Ryck FD, Sokolow Y, Oosterhuis JW, Siebenga J, Schmid T, Bodner J, Dienemann H, Leschber G, Schneiter D, Hansen H, Licht P, Petersen RH, Piwkowski C, D'Amico T, Demmy T, Deschamps C, Howington J, Liptay M, McKenna R, Mitchell J, Meyers B, Park B, Swanson S, Lee HS, He J, Li Y, Liu Z, Wu N, Yim A, Yu W, Kohno T, Wright G, Yan TD. Video-assisted thoracoscopic surgery lobectomy at 20 years: a consensus statement. Eur J Cardiothorac Surg 2013; 45:633-9. [DOI: 10.1093/ejcts/ezt463] [Citation(s) in RCA: 156] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Schefter T, Decker P, Meyers B, Ferguson M, Oeltjen A, Putnam J, Cassivi S, Reed C, Lockhart A. A Phase 2 Study of Neoadjuvant Therapy With Cisplatin, Docetaxel, Panitumumab Plus Radiation Therapy Followed by Surgery in Patients With Locally-Advanced Adenocarcinoma of the Distal Esophagus: Results of ACOSOG Z4051 (Alliance). Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.222] [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: 11/27/2022]
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Tiriveedhi V, Baskaran G, Sarma N, Askar M, Budev M, Aloush A, Hachem R, Trulock E, Meyers B, Patterson G, Mohanakumar T. Pre-Transplant Antibodies to Kα1Tubulin and Collagen V in Lung Transplantation: Correlation with Disease, Primary Graft Dysfunction, Donor Specific HLA Antibodies, and Chronic Rejection. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.187] [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: 10/27/2022] Open
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Tiriveedhi V, Angaswamy N, Brand D, Weber J, Gelman AG, Hachem R, Trulock EP, Meyers B, Patterson G, Mohanakumar T. A shift in the collagen V antigenic epitope leads to T helper phenotype switch and immune response to self-antigen leading to chronic lung allograft rejection. Clin Exp Immunol 2012; 167:158-68. [PMID: 22132895 DOI: 10.1111/j.1365-2249.2011.04486.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Immune responses to human leucocyte antigen (HLA) and self-antigen collagen V (Col-V) have been proposed in the pathogenesis of chronic rejection (bronchiolitis obliterans syndrome, BOS) following human lung transplantation (LTx). In this study, we defined the role for the shift in immunodominant epitopes of Col-V in inducing T helper phenotype switch leading to immunity to Col-V and BOS. Sera and lavage from BOS(+) LTx recipients with antibodies to Col-V were analysed. Two years prior to BOS, patients developed antibodies to both Col-V,α1(V) and α2(V) chains. However, at clinical diagnosis of BOS, antibodies became restricted to α1(V). Further, lung biopsy from BOS(+) patients bound to antibodies to α1(V), indicating that these epitopes are exposed. Fourteen Col-V peptides [pep1-14, pep1-4 specific to α1(V), pep5-8 to α1,2(V) and pep9-14 to α2(V)] which bind to HLA-DR4 and -DR7, demonstrated that prior to BOS, pep 6, 7, 9, 11 and 14 were immunodominant and induced interleukin (IL)-10. However, at BOS, the response switched to pep1, 4 and 5 and induced interferon (IFN)-γ and IL-17 responses, but not IL-10. The T helper (Th) phenotype switch is accompanied by decreased frequency of regulatory T cells (T(regs) ) in the lavage. LTx recipients with antibodies to α1(V) also demonstrated increased matrix metalloproteinase (MMP) activation with decreased MMP inhibitor, tissue inhibitor of metalloproteinase (TIMP), suggesting that MMP activation may play a role in the exposure of new Col-V antigenic epitopes. We conclude that a shift in immunodominance of self-antigenic determinants of Col-V results in induction of IFN-γ and IL-17 with loss of tolerance leading to autoimmunity to Col-V, which leads to chronic lung allograft rejection.
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Affiliation(s)
- V Tiriveedhi
- Department of Surgery, Washington University School of Medicine, St Louis, MO 63110, USA
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Tiriveedhi V, Angaswamy N, Brand D, Weber J, Hacheem R, Trulock E, Meyers B, Patterson G, Mohanakumar T. 233 Epitope Switch of Self-Antigen Collagen V Is Associated with Th-17 Phenotype and Autoimmune Responses: Role in Chronic Rejection Following Human Lung Transplantation. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.240] [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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Tiriveedhi V, Weber J, Hacheem R, Aloush A, Phelan D, Trulock E, Meyers B, Patterson A, Mohanakumar T. 82 Antibody Directed Therapy for DSA Results in Diminished Autoimmune Response and Favorable Long Term Outcome Following Human Lung Transplantation. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.089] [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: 11/15/2022] Open
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Abstract
A greater understanding of the molecular mechanisms of sweet taste has profound significance for the food industry as well as for consumers. Understanding the mechanism by which sweet taste is elicited by saccharides, peptides, and proteins will assist science and industry in their search for sweet substances with fewer negative health effects. The original AH-B theories have been supplanted by detailed structural models. Recent identification of the human sweet receptor as a dimeric G-protein coupled receptor comprising T1R2 and T1R3 subunits has greatly increased the understanding of the mechanisms involved in sweet molecule binding and sweet taste transduction. This review discusses early theories of the sweet receptor, recent research of sweetener chemoreception of nonprotein and protein ligands, homology modeling, the transduction pathway, the possibility of the sweet receptor functioning allosterically, as well as the implications of allelic variation.
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Affiliation(s)
- B Meyers
- NutraSweet Co., Chicago, IL 60654, USA
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Meyers B, Kritzer MF. In vitro binding assays using (3)H nisoxetine and (3)H WIN 35,428 reveal selective effects of gonadectomy and hormone replacement in adult male rats on norepinephrine but not dopamine transporter sites in the cerebral cortex. Neuroscience 2008; 159:271-82. [PMID: 19138725 DOI: 10.1016/j.neuroscience.2008.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 11/20/2008] [Accepted: 12/06/2008] [Indexed: 12/18/2022]
Abstract
The prefrontal cortices mediate cognitive functions that critically depend on local dopamine levels. In male rats, many prefrontal tasks where performance is disrupted by changes in dopamine signaling are also impaired by gonadectomy, a manipulation that increases cortical dopamine concentration, prefrontal dopamine axon density and possibly extracellular prefrontal dopamine levels as well. Because these actions could be responsible for the impairing effects of gonadectomy on prefrontal function, the question of how they might arise comes to the fore. Accordingly, the present studies asked whether dopamine levels might be increased via a hormone sensitivity of transporter-mediated dopamine uptake. Specifically, (3)H WIN 35,428 and (3)H nisoxetine, ligands selective for the dopamine (DAT)- and norepinephrine transporter (NET) respectively, were used in in vitro binding assays to ask whether gonadectomy altered transporter affinity (Kd) and/or binding site number (Bmax) in prefrontal cortex, sensorimotor cortex and/or caudate. Assays performed on tissues dissected from sham-operated, gonadectomized and gonadectomized rats supplemented with testosterone propionate or estradiol for 4 or 28 days revealed no significant group differences or obvious trends in Kd or Bmax for DAT binding or in measures of Bmax for NET binding. However, affinity constants for (3)H nisoxetine were found to be significantly higher in sensorimotor and/or prefrontal cortex of rats gonadectomized and gonadectomized and supplemented with estradiol for 4 or 28 days but similar to control in gonadectomized rats given testosterone. Because the NET contributes substantially to extracellular prefrontal dopamine clearance, these androgen-mediated effects could influence prefrontal dopamine levels and might thus be relevant for observed effects of gonadectomy on dopamine-dependent prefrontal behaviors. A hormone sensitivity of the NET could also have bearing on the prefrontal dopamine dysfunction seen in disorders like schizophrenia that disproportionately affect males, whose severity correlates with abnormal testosterone levels, and for which the NET is among suspected sites of pathology.
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Affiliation(s)
- B Meyers
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, New York 11794-5230, USA
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22
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Meyers B, Schoeman J, Goddard A, Seakemela E, Picard J. P1238 New perspectives on the bacteriology and antimicrobial susceptibility of dog bite wounds. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)71078-6] [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: 10/23/2022]
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23
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Foster E, El Naqa I, Meyers B, Govindan R, Bradley J. 2132. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.536] [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: 10/24/2022]
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Pisters K, Vallieres E, Bunn P, Crowley J, Ginsberg R, Ellis P, Meyers B, Marks R, Treat J, Gandara D. S9900: A phase III trial of surgery alone or surgery plus preoperative (preop) paclitaxel/carboplatin (PC) chemotherapy in early stage non-small cell lung cancer (NSCLC): Preliminary results. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.lba7012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- K. Pisters
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - E. Vallieres
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - P. Bunn
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - J. Crowley
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - R. Ginsberg
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - P. Ellis
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - B. Meyers
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - R. Marks
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - J. Treat
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
| | - D. Gandara
- MD Anderson Cancer Ctr, Houston, TX; Swedish Cancer Institute, Seattle, WA; Univ of Colorado Cancer Ctr, Denver, CO; SWOG Statistical Ctr, Seattle, WA; Univ of Toronto, Toronto, ON, Canada; The Juravinski Cancer Ctr, Hamilton, ON, Canada; Washington Univ, St Louis, MO; Mayo Clinic, Rochester, MN; Fox Chase Temple Univ Cancer Ctr, Philadelphia, PA; Univ of CA Davis Cancer Ctr, Sacramento, CA
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Borson S, Bartels SJ, Colenda CC, Gottlieb GL, Meyers B. Geriatric mental health services research: Strategic Plan for an Aging Population: Report of the Health Services Work Group of the American Association for Geriatric Psychiatry. Am J Geriatr Psychiatry 2001; 9:191-204. [PMID: 11481126] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
In November 1999, a working group of the American Association for Geriatric Psychiatry (AAGP) convened to consider strategic recommendations for developing geriatric mental health services research as a scientific discipline. The resulting consensus statement summarizes the principles guiding mental health services research on late-life mental disorders, presents timely and topical priorities for investigation with the potential to benefit the lives of older adults and their families, and articulates a systematic program for expanding the supply of well-trained geriatric mental health services researchers. The agenda presented here is designed to address critical questions in provision of effective mental health care to an aging population and the health policies that govern its delivery.
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Affiliation(s)
- S Borson
- Department of Psychiatry and Behavioral Sciences, University of Washington Seattle, WA 98195-6560, USA
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Meyers B, Borrego F, Papanicolaou G. Pneumocystis carinii pneumonia prophylaxis with atovaquone in trimethoprim-sulfamethoxazole-intolerant orthotopic liver transplant patients: a preliminary study. Liver Transpl 2001; 7:750-1. [PMID: 11510024 DOI: 10.1053/jlts.2001.26433] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [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: 02/07/2023]
Abstract
Pneumocystis carinii pneumonia (PCP) is an opportunistic infection associated with increased morbidity and mortality in solid-organ and bone-marrow transplant recipients. Side effects of trimethoprim-sulfamethoxazole (TMP/SMX) are frequent; therefore, we performed a preliminary study using atovaquone suspension, 750 mg once daily, for 1 year for the prevention of PCP in liver transplant recipients intolerant to TMP/SMX therapy. Twenty-eight patients were treated, and data were analyzed for efficacy and toxicity. Adverse events occurred in 14 subjects, mainly related to the gastrointestinal tract. Side effects from TMP/SMX, i.e., rash, completely resolved and bone-marrow suppression improved in 62% of patients. No patients developed Pneumocystis carinii infection. Although a lower dose of atovaquone once daily may be effective in transplant recipients, further studies are necessary to confirm this preliminary observation. Liver Transpl 2001;7:750-751.)
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Affiliation(s)
- B Meyers
- Transplant Infectious Diseases, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029-6574, USA.
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Gallagher J, Fisher C, Sherman B, Munger M, Meyers B, Ellison T, Fischkoff S, Barchuk WT, Teoh L, Velagapudi R. A multicenter, open-label, prospective, randomized, dose-ranging pharmacokinetic study of the anti-TNF-alpha antibody afelimomab in patients with sepsis syndrome. Intensive Care Med 2001; 27:1169-78. [PMID: 11534565 DOI: 10.1007/s001340100973] [Citation(s) in RCA: 35] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To investigate the pharmacokinetics and safety of afelimomab, a murine antibody fragment against human tumor necrosis factor (TNF)-alpha in patients with sepsis. DESIGN Multicenter, randomized, open-label, placebo-controlled phase I/II clinical trial. SETTING Intensive care units of six academic medical centers in the United States. PATIENTS Forty-eight patients with a clinical diagnosis of sepsis who received standard supportive care and antimicrobial therapy. INTERVENTIONS Patients received 0.3, 1.0, or 3.0 mg/kg afelimomab or placebo intravenously over 20 min. Three patients in each dose group received single doses; the remaining nine patients in each group received multiple (nine) doses at 8-h intervals over 72 h. MEASUREMENTS AND MAIN RESULTS Afelimomab appeared safe and well tolerated. Single- and multiple-dose kinetics were predictable and dose related. The elimination half-life was 44.7 h. Afelimomab treatment resulted in increased serum concentrations of TNF (includes TNF-antibody complexes) and decreased serum interleukin-6 concentrations, whereas no discernible trends were observed in placebo-treated patients. There was no significant treatment effect on 28-day mortality as was expected given the small number of patients. However, overall mortality was significantly (p = 0.001) associated with baseline interleukin-6 concentration. All patients experienced adverse events, but the vast majority were considered unrelated to the study drug and demonstrated no apparent relationship to afelimomab dose. Although 41% of patients developed human anti-murine antibodies, there were no clinical sequelae. CONCLUSIONS Multidose therapy with afelimomab was safe, well tolerated, and had predictable linear kinetics. A large randomized trial comparing afelimomab to placebo in patients with well defined sepsis has recently been completed.
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Affiliation(s)
- J Gallagher
- Department of Anaesthesia, College of Medicine, University of Florida, Gainesville 32610-0254, USA.
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Cohen CI, Cohen GD, Blank K, Gaitz C, Katz IR, Leuchter A, Maletta G, Meyers B, Sakauye K, Shamoian C. Schizophrenia and older adults. An overview: directions for research and policy. Am J Geriatr Psychiatry 2000; 8:19-28. [PMID: 10648291 DOI: 10.1097/00019442-200002000-00003] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [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: 11/25/2022]
Abstract
The Group for the Advancement of Psychiatry, Committee on Aging, believes that a crisis has emerged with respect to the understanding of the nature and treatment of schizophrenia in older persons. Moreover, critical gaps exist in clinical services for this population. In this article, we examine the epidemiology of aging and schizophrenia; life-course changes in psychopathology, cognitive function, social functioning, and physical health; and various concerns regarding treatment, services, and financing. Finally, we propose six research and policy recommendations and suggest methods for addressing the research questions that we have posed.
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Affiliation(s)
- C I Cohen
- SUNY Health Sciences Center, Brooklyn,11203, USA.
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Emre S, Sebastian A, Chodoff L, Boccagni P, Meyers B, Sheiner PA, Mor E, Guy SR, Atillasoy E, Schwartz ME, Miller CM. Selective decontamination of the digestive tract helps prevent bacterial infections in the early postoperative period after liver transplant. Mt Sinai J Med 1999; 66:310-3. [PMID: 10618730] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
UNLABELLED In liver transplant (LTx) recipients, gut-associated bacterial and fungal organisms produce significant postoperative morbidity and mortality. We sought to assess the role of selective digestive decontamination (SDD) in preventing postoperative infections in a large single-center cohort of liver recipients transplanted under two non-simultaneous protocols. In 212 consecutive patients transplanted between 1/1/91 and 7/31/92, SDD (gentamicin 80 mg, polymyxin B 100 mg, nystatin suspension 10 mL) was employed, starting after induction of anesthesia and continued until POD 21 (SDD Group). In 157 consecutive patients transplanted between 1/1/93 and 12/31/93, SDD was not used (non-SDD Group). Both groups received IV vancomycin and cefotaxime prophylaxis. All culture-positive infections within the first 30 days post-LTx were recorded and classified as bacterial or fungal. Infection-related mortality (patients who died of infectious complications without any technical complication) was recorded. Groups did not differ in patient demographics, United Network for Organ Sharing (UNOS) status, use of veno-venous bypass, total/warm ischemia, or length of ICU stay. Infections developed in fewer SDD patients (56/212; 26%) than non-SDD patients (69/157; 44%) (p<0.001). The incidence of gram-negative infection was less in the SDD group (11% vs. 26%, p<0. 001) as was gram-positive infection (16% vs. 26%, p<0.001). Among patients who developed infection, there was no difference between groups in infections per patient. Primary graft non-function (PNF) developed in 20 SDD patients (7/20 had infections) and 8 non-SDD patients (6/8 had infections) (p=0.06). There were no differences in incidence of fungal infections or of infection-related mortality between groups. In the SDD group, there were fewer abdominal (p<0. 001), lung (p<0.001), wound (p<0.01), and urinary tract infections (p<0.05). CONCLUSION Use of SDD in liver recipients early after transplant was associated with significantly fewer infections in the early postoperative period.
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Affiliation(s)
- S Emre
- Mount Sinai School of Medicine, Box 1104, One East 100th Street, New York, NY 10029, USA
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Naldini A, Sower L, Bocci V, Meyers B, Carney DH. Thrombin receptor expression and responsiveness of human monocytic cells to thrombin is linked to interferon-induced cellular differentiation. J Cell Physiol 1998; 177:76-84. [PMID: 9731747 DOI: 10.1002/(sici)1097-4652(199810)177:1<76::aid-jcp8>3.0.co;2-b] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human thrombin has been shown to stimulate monocyte chemotaxis, phagocytosis, and interleukin (IL8) production, but the mechanisms responsible for stimulation are not well defined. In some cells, thrombin stimulation of proliferation appears to require both cleavage of the proteolytically activated receptor for thrombin (PAR1) and activation of a nonproteolytically activated thrombin receptor (N-PAR), while in others activation of either receptor alone may be sufficient for stimulation. We, therefore, have initiated studies to address thrombin receptor expression and cell responsiveness to thrombin in interferon gamma (IFNgamma)-differentiated and nondifferentiated U937 monocytic cells. Northern blot analysis shows that PAR1 expression is upregulated upon differentiation. Experiments with biotinylated and 125I-thrombin show that specific thrombin binding is dramatically increased by differentiation although it is not clear if this binding is to PAR1 or to a separate binding component such as N-PAR which is present on fibroblasts and other cells. Addition of thrombin at concentrations of 1-10 microg/ml (30-300 nM, concentrations where specific thrombin binding is observed) stimulates proliferation of IFNgamma-differentiated U937 cells but not of undifferentiated U937 cells. Thrombin also stimulates interleukin-6 (IL6) production in IFNgamma-differentiated U937 cells. Moreover, thrombin induces high levels of IL6, interleukin-1beta (IL1beta), and tumor necrosis factor-alpha (TNF alpha) production by peripheral blood mononuclear cells (PBMC) and monocytes. These results show that differentiated U937 cells and mature PBMC are responsive to thrombin whereas nondifferentiated U937 are not. Further, this responsiveness appears to correlate with expression of PAR1 and to a dramatic increase in specific thrombin binding. That thrombin stimulates cytokine production and proliferation in populations of differentiated monocytes suggests that thrombin may be an important regulator of inflammation and wound healing.
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Affiliation(s)
- A Naldini
- University of Siena, Institute of General Physiology, Italy.
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Abstract
BACKGROUND Documented snowmobile-related fatalities and injuries have increased; however, reports of peripheral nerve injuries are rare. METHODS This case series describes a cluster of severe disabling brachial plexus injuries incurred during snowmobiling. Medical record abstraction was used to identify relevant patient and event characteristics. RESULTS All study patients were younger male snowmobile drivers. All incidents occurred at speeds in excess of 40 mph. Blood alcohol concentrations exceeded legal intoxication limits in most cases. Complete damage of the brachial plexus occurred in four of the six patients; severe disability occurred in all cases. Five of the six patients sustained associated orthopedic shoulder complex injuries. CONCLUSION This first report of severe peripheral nerve damage may signal the advent of more severe nonfatal snowmobile-related injuries that mimic motorcycle-related injuries, because the maximum attainable speeds of snowmobiles have increased. Surveillance of snowmobile-related injuries is warranted to identify the full spectrum of snowmobile injuries and recommend public safety measures.
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Affiliation(s)
- B L Braun
- Division of Education and Research, St. Mary's/Duluth Clinic Health System, Minnesota 55805, USA
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Afessa B, Hogans L, Murphy R, Kubilis P, Meyers B. APACHE II score is better than weaning indices in predicting prolonged mechanical ventilator dependence. Critical Care 1997. [PMCID: PMC3495508 DOI: 10.1186/cc64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Schluger LK, Sheiner PA, Jonas M, Guarrera JV, Fiel IM, Meyers B, Berk PD. Isoniazid hepatotoxicity after orthotopic liver transplantation. Mt Sinai J Med 1996; 63:364-9. [PMID: 8898542] [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] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The hepatotoxic effects of isoniazid have been well described, but there have been no reports on the incidence of isoniazid-induced liver disease in patients who have received an orthotopic liver transplant. We retrospectively reviewed the records of 13 patients who received isoniazid after liver transplantation for either chemoprophylaxis or as part of a multidrug regimen for the treatment of Mycobacterium tuberculosis infection. Five of the 13 patients developed biochemical and histologic evidence of isoniazid hepatotoxicity. All five patients were on a multidrug regimen which included the administration of rifampin. No hepatotoxicity occurred in patients who received isoniazid alone or in conjunction with ethambutol for chemoprophylaxis. In conclusion, the incidence of isoniazid hepatotoxicity increased when the drug was used in conjunction with rifampin for the treatment of M. tuberculosis infection.
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Affiliation(s)
- L K Schluger
- Department of Medicine, Mount Sinai School of Medicine, New York, New York 10029, USA
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Abstract
Experimental animal models that are directly relevant to human melanoma are lacking. We propose the Angora goat as a potentially useful field model with experimental potential and to this end have examined the prevalence and site distribution of all skin cancers in 28 Angora goat herds in Queensland, Australia. The prevalence of benign melanocytic lesions (lentigines) and their experimental induction by sunlight were also investigated. Among 1731 goats over 2 years of age, 139 malignant skin tumors were excised from 95 affected animals. The prevalence of squamous cell carcinoma (SCC) was 3.8% and of melanoma, 2.2%. Main site of occurrence of melanoma (83%) was the dorsal surface of the ear; in contrast SCC occurred mostly (84%) on the perineum. Lentigines were darker and more prevalent on the exposed compared with the unexposed surface of the ear in Angoras, analogous to the higher prevalence of nevi on the exposed compared with the less exposed inner surface of the arm in humans. Lentigines, which were also found on the perineum though lighter in color than on the dorsal ear, were absent in young animals under 3 months but were numerous in 1-3 year olds. Furthermore in an experimental substudy eight goats, having one flank repeatedly shorn and the contralateral flank left unshorn, revealed consistently more solar lentigines on the shorn flank (P < 0.05) when both sides were examined after 9 months. Histopathological examination of paired skin biopsies from five of these goats also showed more abundant pigmentation in skin from the exposed, as compared with the unexposed flank. These findings indicate that sunlight induces tumors and lentigines in goats in a highly site-specific manner. The Angora goat model may suggest paradigms for explaining the site differences observed for human melanoma and may also be useful in the future clarification of molecular changes following carcinogenic levels of sun exposure.
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Affiliation(s)
- A Green
- Epidemiology and Population Health Unit, Queensland Institute of Medical Research, Australia.
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Alter CL, Pelcovitz D, Axelrod A, Goldenberg B, Harris H, Meyers B, Grobois B, Mandel F, Septimus A, Kaplan S. Identification of PTSD in cancer survivors. Psychosomatics 1996; 37:137-43. [PMID: 8742542 DOI: 10.1016/s0033-3182(96)71580-3] [Citation(s) in RCA: 174] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The authors measured the rate and determinants of posttraumatic stress disorder (PTSD) in a group of cancer survivors. Patients who had a history of cancer diagnosis with at least 3 years since diagnosis, receiving no active treatment, such as chemotherapy or radiation, were interviewed (N = 27). Patients, who were part of the DSM-IV PTSD field trial, were compared with a community-based control group matched for age and socioeconomic status. One member of the survivor group (4%) and no members of the control group met criteria for current PTSD (NS). Six of the survivors (22%) and no control subjects met lifetime criteria (P < 0.02). Cancer patients have a higher rate of PTSD than found in the community. Symptoms closely resemble those of individuals who have experienced other traumatic events.
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Affiliation(s)
- C L Alter
- Department of Psychiatry, North Shore University Hospital-Cornell University Medical College, USA
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Pelcovitz D, Goldenberg B, Kaplan S, Weinblatt M, Mandel F, Meyers B, Vinciguerra V. Posttraumatic stress disorder in mothers of pediatric cancer survivors. Psychosomatics 1996; 37:116-26. [PMID: 8742539 DOI: 10.1016/s0033-3182(96)71577-3] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Prevalence of posttraumatic stress disorder (PTSD) in 24 mothers of pediatric cancer survivors was compared with its prevalence among 23 mothers of healthy children. Significantly more mothers of pediatric cancer survivors were diagnosed with lifetime PTSD. Significant differences were also found in lifetime arousal, as well as current and lifetime reexperience and avoidance symptom clusters. Significant difference existed in the distribution of the number of prediagnosis high-magnitude events experienced by the mothers diagnosed with current PTSD as compared with the prediagnosis experience of the mothers who were not diagnosed with current PTSD. Illness severity, level of perceived family and extrafamilial social support, and Symptom Checklist-90-Revised global severity index scores did not significantly differ in the PTSD-positive and PTSD-negative groups.
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Affiliation(s)
- D Pelcovitz
- Department of Psychiatry, North Shore University Hospital, Cornell University Medical College, USA
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Meyers B. Wanted: Disability benefits. Can Vet J 1993; 34:7. [PMID: 17424158 PMCID: PMC1686355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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Abstract
In the first part of this article I argue that war should be considered as a disaster. A brief historical review of the relationship of the field of disaster studies to military concerns is presented in an effort to demonstrate that, in fact, war has been a familiar subject in the field. I then consider definitions of disaster and conclude that war is easily accommodated by them. In the main section of the article I attempt to uncover distinctive characteristics of war by submitting war to analysis within well known sociological frameworks for disasters. Finally, some methodological considerations for the study of war disasters are presented.
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Affiliation(s)
- B Meyers
- Department of Psychology Brooklyn College Brooklyn NY 11210 USA
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Abstract
The efficacy and safety of ofloxacin for the treatment of pneumonia, urinary infection and skin infections in the institutionalized elderly is being studied in a multicenter North American trial. The two study arms include an open, randomized, comparison of intravenous or oral ofloxacin with standard therapy in subjects requiring admission to acute care institutions, and an open study of oral ofloxacin in residents of chronic care facilities. To date 58 subjects have been enrolled with a mean age of 84 +/- 8 years. The preliminary observations from this ongoing multicenter study suggest that ofloxacin will be a safe and effective option for antimicrobial therapy in the treatment of these common infections in the institutionalized elderly.
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Parsons PG, Takahashi H, Candy J, Meyers B, Vickers J, Kelly WR, Smith I, Spradbrow P. Histopathology of melanocytic lesions in goats and establishment of a melanoma cell line: a potential model for human melanoma. Pigment Cell Res 1990; 3:297-305. [PMID: 2101929 DOI: 10.1111/j.1600-0749.1990.tb00301.x] [Citation(s) in RCA: 19] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Melanocytic cells from white Angora goats were studied in vivo and in vitro. The histopathology of pigmented areas of skin from the most common sites of melanoma (solar-exposed areas of the ear, face, and perineum) resembled that of the epidermal melanocytes in Hutchinson's melanotic freckle in humans. Seven melanoma biopsies from 6 Angora goats showed histopathological features in common with human melanoma. A melanoma cell line, GM-1, was established in culture from a lymph node metastasis obtained from an animal that had a primary tumor excised and later developed extensive metastatic disease. GM-1 cells were mainly diploid, amelanotic, proliferated rapidly, spontaneously formed vacuolated cells, and were tumorigenic in nude mice. The species of origin of the GM-1 line was confirmed by isozyme profiles. GM-1 cultured cells and the original biopsy both expressed S-100 protein and tyrosinase antigen. Using GM-1 cells as the immunogen, a monoclonal antibody (MoAb 1F1) was derived that reacted strongly with a 116 kDa antigen in 50% of the GM-1 cells, but had little activity with goat fibroblasts (GM-F) or with human melanoma cells. GM-F, on the other hand, yielded more intense staining than GM-1 with an intermediate filament antibody (IFA), reacting with a 58 kDa antigen in both cell lines. The sensitivity of GM-1 to anticancer agents was similar to that of human melanoma cells. The pathology of caprine melanoma and its association with sun-exposed sites in relatively young animals suggest that it may be a suitable model for studying induction of melanoma by natural sunlight.
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Affiliation(s)
- P G Parsons
- Queensland Institute of Medical Research, Herston, Brisbane, Australia
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Abstract
Recent advances in the methodology of longitudinal investigations have permitted the identification of predictors of chronicity and relapse of depression. However, findings from mixed-age populations may not be directly applicable to geriatric depression. The effects of medical illness, cognitive dysfunction, and neuroradiological abnormalities on the outcome of geriatric depression merit further evaluation. Late-onset depression requires special attention, since medical and neurological disorders may be particularly important factors in these cases.
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Affiliation(s)
- G S Alexopoulos
- Department of Psychiatry, New York Hospital-Cornell Medical Center, White Plains
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Meyers B, Valencia S. Flash fluorometer made from off-the-shelf photographic equipment to measure tissue levels of fluorescein. Plast Reconstr Surg 1989; 83:173-8. [PMID: 2909065 DOI: 10.1097/00006534-198901000-00035] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A device to measure fluorescein in tissue has been constructed from standard photographic equipment--an electronic strobe and a flashmeter both covered with interference filters. The instrument works well in the light and need not touch the area being measured, an advantage over existing fluorometers. The instrument has been used to measure the amount of dye in flaps in rats, pigs, and three humans. The results revealed that the amount of dye in a freshly made flap was rarely as much as in normal skin, and skin with less than 20 percent of the dye of control areas usually sloughed, although there were exceptions. In the future the instrument will be improved, and its readings will be compared to those obtained from radioactive microspheres, the present "gold standard" of techniques to measure vascularity. The instrument can be used to estimate the blood supply to any tissue and seems to be as reliable as the dermofluorometers already on the market.
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Affiliation(s)
- B Meyers
- Veterans Administration Medical Center, New Orleans, La
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Abstract
The amount of tracer [125I]T4 bound to serum thyronine-binding globulin (TBG) was measured by polyacrylamide gel electrophoresis in adult thyroidectomized (TX) rats and normal 1-day to 4-week-old rat puts. Thyroidectomy was associated with the appearance of significant amounts of [125I]T4 binding to serum TBG in lean rats, but not in obese Zucker rats. Treatment of the TX rats in vivo with replacement doses of T4 prevented this increase in TBG binding, but enrichment of serum from TX rats with T4 did not. Significant amounts of tracer [125I]T4 binding to TBG was present in serum from 1- to 3-week-old normal rat pups, but not in 1-day- or 4-week-old pups. There were significantly higher levels of TBG binding of [125I]T4 in serum from 2-week-old rat pups raised in litters of 16 pups compared to those raised in litters of 4 pups. All manipulations that result in the appearance of TBG in rat serum also result in either weight loss or a slowing in the rate of growth, suggesting that the appearance of TBG in rat serum has a nutritional component. This possibility is further supported by the observations that increases in TBG binding of [125I]T4 are not found in obese Zucker rats fed a low protein-high carbohydrate diet for 14 days or fasted for 7 days, or after thyroidectomy, perhaps owing to the large stores of fuel in the obese rat.
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Affiliation(s)
- R A Young
- Division of Endocrinology, University of Massachusetts Medical School, Worcester 01605
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Abstract
Dietary iodine intake in the United States is greater than that considered necessary for the maintenance of normal thyroid function. The administration of pharmacologic quantities of iodine (10 to 1,000 mg daily) to euthyroid subjects results in small decreases in the serum T4 and T3 concentrations and a compensatory increase in the basal and TRH-stimulated serum TSH concentrations. Studies were carried out to determine whether a far smaller increase in iodine intake would also affect thyroid function. Normal volunteers received 1,500, 500, or 250 micrograms supplemental iodine daily for 14 days. Following the administration of 1500 micrograms iodine daily, there were small but significant decreases in the serum T4 and T3 concentrations and a small compensatory increase in the serum TSH concentration and the serum TSH response to TRH. In contrast, no changes in pituitary-thyroid function occurred during the administration of 500 or 250 micrograms iodine daily. These findings indicate that a small increase in dietary iodine can induce subtle changes (all values remaining within the normal range) in pituitary-thyroid function, probably by inhibiting thyroid hormone release. The smaller iodine supplements of 500 and 250 micrograms daily, quantities that may easily be achieved under normal conditions, did not, however, affect thyroid function.
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Affiliation(s)
- T Paul
- Department of Medicine, University of Massachusetts Medical School, Worcester 01605
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Gardner DF, Utiger RD, Schwartz SL, Witorsch P, Meyers B, Braverman LE, Witorsch RJ. Effects of oral erythrosine (2',4',5',7'-tetraiodofluorescein) on thyroid function in normal men. Toxicol Appl Pharmacol 1987; 91:299-304. [PMID: 2447681 DOI: 10.1016/0041-008x(87)90052-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Erythrosine (Er), a tetraiodinated derivative of fluorescein, is a coloring agent widely used in foods, cosmetics, and pharmaceutical products. Because of its high iodine content and previous reports demonstrating an inhibitory effect of erythrosine on hepatic 5'-monodeiodination, we studied the effects of this compound on thyroid function and serum and urinary iodide concentrations in normal subjects. Thirty normal men, equally divided into three treatment groups, each received a 14-day course of oral Er in doses of 20, 60, or 200 mg/day. Serum thyroxine (T4), triiodothyronine (T3), reverse T3 (rT3), thyroid stimulating hormone (TSH), protein-bound iodide (PBI), and total iodide concentrations, serum T3-charcoal uptake, and 24-hour urinary iodide excretion were measured on Days 1, 8, and 15. Thyrotropin-releasing hormone (TRH) tests were performed on Days 1 and 15. There were no significant changes in serum T4, T3, rT3, and T3-charcoal uptake values at any dose. In men receiving 200 mg Er/day, the mean basal serum TSH concentration increased significantly from 1.7 +/- 0.1 (SE) on Day 1 to 2.2 +/- 0.1 microU/ml on Day 15 (p less than 0.05), and the mean peak TSH increment after TRH increased from 6.3 +/- 0.5 to 10.5 +/- 1.0 microU/ml (p less than 0.05). There were no significant changes in basal or peak TSH responses in the men receiving 20 or 60 mg Er/day. Significant dose-related increases in serum total iodide and PBI concentrations occurred during all three doses, and significant dose-related increases in urinary iodide excretion occurred during the 60 and 200 mg/day Er doses. These data suggest that the increase in TSH secretion induced by Er was related to the antithyroid effect of increased serum iodide concentrations, rather than a direct effect of Er on thyroid hormone secretion or peripheral metabolism.
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Affiliation(s)
- D F Gardner
- Department of Medicine, Medical College of Virginia, Richmond 23298
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Hedberg CW, Fishbein DB, Janssen RS, Meyers B, McMillen JM, MacDonald KL, White KE, Huss LJ, Hurwitz ES, Farhie JR. An outbreak of thyrotoxicosis caused by the consumption of bovine thyroid gland in ground beef. N Engl J Med 1987; 316:993-8. [PMID: 3561455 DOI: 10.1056/nejm198704163161605] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report an outbreak of thyrotoxicosis without true hyperthyroidism that occurred between April 1984 and August 1985 among residents of southwestern Minnesota and adjacent areas of South Dakota and Iowa. One hundred twenty-one cases were identified through surveillance of medical clinics, laboratories, hospitals, and physicians' offices. Investigation of the outbreak demonstrated an association between the occurrence of thyrotoxicosis and the consumption of ground beef prepared from neck trimmings processed by a single slaughtering plant (odds ratio, 19.0; P = 0.0001). The cause was confirmed by the findings of bovine thyroid tissue in samples of these trimmings and high concentrations of thyroid hormone in implicated samples of ground beef and the demonstration of prompt increases in serum thyroid hormone concentrations in volunteers who ate the implicated ground beef. Bovine thyroid tissue had been introduced into the neck trimmings inadvertently during the process of "gullet trimming," a procedure that harvests muscles from the bovine larynx. The outbreak resolved after this procedure was discontinued at the plant. The clinical features of the illness suggested the diagnosis of silent thyroiditis, and it is possible that sporadic cases--or even outbreaks--of thyrotoxicosis factitia caused by this mechanism may have occurred in the past but were not recognized.
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Frey H, Skare S, Sand T, Siersbaek-Nielsen K, Meyers B, Young R, Braverman L, Nyhus S. [Familial dysalbuminemic hyperthyroxinemia]. Tidsskr Nor Laegeforen 1986; 106:659-62. [PMID: 3085278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Siegel JP, Meyers B, Dineen MK. Comparison of depressed and nondepressed women with severe premenstrual tension syndrome. Psychother Psychosom 1986; 45:113-7. [PMID: 3823355 DOI: 10.1159/000287936] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
There is a need to better understand the relationship between premenstrual tension syndrome (PMS) and premenstrual depression. This research was designed to determine if severely depressed women experience a different kind of premenstrual dysfunction than nondepressed PMS patients. The nature and severity of premenstrual symptoms in both groups were evaluated and compared. The severely depressed women were found to have higher PMS scores, but did not differ from the nondepressed group in selection or ranking of symptoms. Depression appeared to influence the patient's perception and rating of symptoms, but the underlying premenstrual dysfunction was identical.
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