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Lightner JS, Schneider J, Grimes A, Wigginton M, Curran L, Gleason T, Prochnow T. Physical activity among transgender individuals: A systematic review of quantitative and qualitative studies. PLoS One 2024; 19:e0297571. [PMID: 38416705 PMCID: PMC10901310 DOI: 10.1371/journal.pone.0297571] [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] [Received: 09/29/2023] [Accepted: 01/08/2024] [Indexed: 03/01/2024] Open
Abstract
Transgender individuals face stigma, discrimination, and other barriers impacting their ability to engage in physical activity (PA). We aim to review current literature on PA among transgender individuals. A systemic literature search of research studies from 2010-2023 was conducted. Studies must have reported a measure of PA and gender, be original research, and focus on transgender participants' PA. Rates of PA for transgender individuals were lower compared to cisgender or sexual minority individuals. Transgender women were less likely to engage in PA than other groups. Qualitative results suggest transgender oppression, stigma, discrimination, body image, unwelcoming environments (gyms, locker rooms, swimming pools), and the dichotomous structure of sport contribute to lower rates of PA among transgendered individuals. Disparities in PA for transgender individuals exist. Policy, environment, and system changes are needed to reduce transgender stigma in sport and PA settings. Current legislation is being developed and implemented in the United States regarding the place of transgender individuals in sport and PA. These results should inform public discourse on the topic.
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Affiliation(s)
- Joseph S. Lightner
- School of Nursing and Health Studies, University of Missouri-Kansas City, Kansas City, Missouri, United States of America
- American Public Health Association, Physical Activity Section, Washington, D.C., United States of America
| | - Justin Schneider
- Department of Nursing, California State University-San Bernardino, Palm Desert, California, United States of America
| | - Amanda Grimes
- School of Nursing and Health Studies, University of Missouri-Kansas City, Kansas City, Missouri, United States of America
- American Public Health Association, Physical Activity Section, Washington, D.C., United States of America
| | - Melissa Wigginton
- American Public Health Association, Physical Activity Section, Washington, D.C., United States of America
| | - Laurel Curran
- American Public Health Association, Physical Activity Section, Washington, D.C., United States of America
- Department of Health Behavior, School of Public Health, Texas A&M University, College Station, Texas, United States of America
| | - Tori Gleason
- University of Kansas Medical Centers, Kansas City, Kansas, United States of America
| | - Tyler Prochnow
- American Public Health Association, Physical Activity Section, Washington, D.C., United States of America
- Department of Health Behavior, School of Public Health, Texas A&M University, College Station, Texas, United States of America
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Diwekar U, Amekudzi-Kennedy A, Bakshi B, Baumgartner R, Boumans R, Burger P, Cabezas H, Egler M, Farley J, Fath B, Gleason T, Huang Y, Karunanithi A, Khanna V, Mangan A, Mayer AL, Mukherjee R, Mullally G, Rico-Ramirez V, Shonnard D, Svanström M, Theis T. A perspective on the role of uncertainty in sustainability science and engineering. Resour Conserv Recycl 2021; 164:105140. [PMID: 32921915 PMCID: PMC7480224 DOI: 10.1016/j.resconrec.2020.105140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
The Trans-Atlantic Research and Development Interchange on Sustainability Workshop (TARDIS) is a meeting on scientific topics related to sustainability. The 2019 workshop theme was "On the Role of Uncertainty in Managing the Earth for Global Sustainability." This paper presents the perspectives on this topic derived from talks and discussions at the 2019 TARDIS workshop. There are four kinds of uncertainties encountered in sustainability ranging from clear enough futures to true surprises. The current state-of-the-art in assessing and mitigating these uncertainties is discussed.
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Affiliation(s)
- U Diwekar
- Vishwamitra Research Institute, Crystal Lake, IL 60012, United States
| | | | - B Bakshi
- The Ohio State University, Columbus, OH 43210, United States
| | - R Baumgartner
- University of Graz, Merangasse 18/I, 8010, Graz, Austria
| | - R Boumans
- AFORDable Futures LLC, Charlotte, VT, United States
| | - P Burger
- University of Basel, Basel, Switzerland
| | - H Cabezas
- University of Miskolc, Miskolc, Hungary
| | - M Egler
- University of Vermont, Burlington, VT, United States
| | - J Farley
- University of Vermont, Burlington, VT, United States
| | - B Fath
- Towson University, Towson, MD, United States
- Advanced Systems Analysis Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - T Gleason
- USA Environmental Protection Agency, Narragansett, Rhode Island 02882, United States
| | - Y Huang
- Wayne State University, Detroit, Michigan 48202, United States
| | - A Karunanithi
- University of Colorado Denver, Denver, CO, 80217, United States
| | - V Khanna
- University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | - A Mangan
- United States Business Council for Sustainable Development, Austin, Texas, United States
| | - A L Mayer
- Michigan Technological University, Houghton, MI, United States
| | - R Mukherjee
- Vishwamitra Research Institute, Crystal Lake, IL 60012, United States
- The University of Texas Permian Basin, Odessa, TX, 79762, United States
| | | | - V Rico-Ramirez
- Instituto Tecnologico de Celaya, Celaya, Guanajuato 38010, Mexico
| | - D Shonnard
- Michigan Technological University, Houghton, MI, United States
| | - M Svanström
- Chalmers University of Technology, Gothenburg, Sweden
| | - T Theis
- The University of Illinois at Chicago, Chicago, IL, 60612, United States
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Seese L, Aranda-Michel E, Huckaby L, Keebler M, Hickey G, Mathier M, Sultan I, Gleason T, Kilic A. Development and Validation of a Risk Score to Predict One-Year Mortality after Bridge to Heart Transplantation with Contemporary Durable Left Ventricular Assist Devices. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1232] [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] Open
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Dehkharghani S, Bowen M, Haussen DC, Gleason T, Prater A, Cai Q, Kang J, Nogueira RG. Body Temperature Modulates Infarction Growth following Endovascular Reperfusion. AJNR Am J Neuroradiol 2017; 38:46-51. [PMID: 27758774 DOI: 10.3174/ajnr.a4969] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 06/01/2016] [Accepted: 08/23/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The neuronal substrate is highly sensitive to temperature elevation; however, its impact on the fate of the ischemic penumbra has not been established. We analyzed interactions between temperature and penumbral expansion among successfully reperfused patients with acute ischemic stroke, hypothesizing infarction growth and worse outcomes among patients with fever who achieve full reperfusion. MATERIALS AND METHODS Data from 129 successfully reperfused (modified TICI 2b/3) patients (mean age, 65 ± 15 years) presenting within 12 hours of onset were examined from a prospectively collected acute ischemic stroke registry. CT perfusion was analyzed to produce infarct core, hypoperfusion, and penumbral mismatch volumes. Final DWI infarction volumes were measured, and relative infarction growth was computed. Systemic temperatures were recorded throughout hospitalization. Correlational and logistic regression analyses assessed the associations between fever (>37.5°C) and both relative infarction growth and favorable clinical outcome (90-day mRS of ≤2), corrected for NIHSS score, reperfusion times, and age. An optimized model for outcome prediction was computed by using the Akaike Information Criterion. RESULTS The median presentation NIHSS score was 18 (interquartile range, 14-22). Median (interquartile range) CTP-derived volumes were: core = 9.6 mL (1.5-25.3 mL); hypoperfusion = 133 mL (84.2-204 mL); and final infarct volume = 9.6 mL (8.3-45.2 mL). Highly significant correlations were observed between temperature of >37.5°C and relative infarction growth (Kendall τ correlation coefficient = 0.24, P = .002). Odds ratios for favorable clinical outcome suggested a trend toward significance for fever in predicting a 90-day mRS of ≤2 (OR = 0.31, P = .05). The optimized predictive model for favorable outcomes included age, NIHSS score, procedure time to reperfusion, and fever. Likelihood ratios confirmed the superiority of fever inclusion (P < .05). Baseline temperature, range, and maximum temperature did not meet statistical significance. CONCLUSIONS These findings suggest that imaging and clinical outcomes may be affected by systemic temperature elevations, promoting infarction growth despite reperfusion.
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Affiliation(s)
- S Dehkharghani
- From the Department of Radiology and Imaging Sciences (S.D., M.B., T.G., A.P.), Emory University Hospital, Atlanta, Georgia
- Department of Neurology (S.D., D.C.H., R.G.N.), Marcus Stroke and Neuroscience Center, Grady Memorial Hospital and Emory University Hospital, Atlanta, Georgia
| | - M Bowen
- From the Department of Radiology and Imaging Sciences (S.D., M.B., T.G., A.P.), Emory University Hospital, Atlanta, Georgia
| | - D C Haussen
- Department of Neurology (S.D., D.C.H., R.G.N.), Marcus Stroke and Neuroscience Center, Grady Memorial Hospital and Emory University Hospital, Atlanta, Georgia
| | - T Gleason
- From the Department of Radiology and Imaging Sciences (S.D., M.B., T.G., A.P.), Emory University Hospital, Atlanta, Georgia
| | - A Prater
- From the Department of Radiology and Imaging Sciences (S.D., M.B., T.G., A.P.), Emory University Hospital, Atlanta, Georgia
| | - Q Cai
- Department of Biostatistics (Q.C.), Emory University, Atlanta, Georgia
| | - J Kang
- Department of Biostatistics (J.K.), University of Michigan, Ann Arbor, Michigan
| | - R G Nogueira
- Department of Neurology (S.D., D.C.H., R.G.N.), Marcus Stroke and Neuroscience Center, Grady Memorial Hospital and Emory University Hospital, Atlanta, Georgia
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Dehkharghani S, Bammer R, Straka M, Bowen M, Allen JW, Rangaraju S, Kang J, Gleason T, Brasher C, Nahab F. Performance of CT ASPECTS and Collateral Score in Risk Stratification: Can Target Perfusion Profiles Be Predicted without Perfusion Imaging? AJNR Am J Neuroradiol 2016; 37:1399-404. [PMID: 26965466 DOI: 10.3174/ajnr.a4727] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/10/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Endovascular trials suggest that revascularization benefits a subset of acute ischemic stroke patients with large-artery occlusion and small-core infarct volumes. The objective of our study was to identify thresholds of noncontrast CT-ASPECTS and collateral scores on CT angiography that best predict ischemic core volume thresholds quantified by CT perfusion among patients with acute ischemic stroke. MATERIALS AND METHODS Fifty-four patients with acute ischemic stroke (<12 hours) and MCA/intracranial ICA occlusion underwent NCCT/CTP during their initial evaluation. CTP analysis was performed on a user-independent platform (RApid processing of PerfusIon and Diffusion), computing core infarct (defined as CBF of <30% normal). A target mismatch profile consisting of infarction core of ≤50 mL was selected to define candidates with acute ischemic stroke likely to benefit from revascularization. RESULTS NCCT-ASPECTS of ≥9 with a CTA collateral score of 3 had 100% specificity for identifying patients with a CBF core volume of ≤50 mL. NCCT-ASPECTS of ≤6 had 100% specificity for identifying patients with a CBF core volume of >50 mL. In our cohort, 44 (81%) patients had an NCCT-ASPECTS of ≥9, a CTA collateral score of 3, or an NCCT-ASPECTS of ≤6. CONCLUSIONS Using an NCCT-ASPECTS of ≥9 or a CTA collateral score of 3 best predicts CBF core volume infarct of ≤50 mL, while an NCCT-ASPECTS of ≤6 best predicts a CBF core volume infarct of >50 mL. Together these thresholds suggest that a specific population of patients with acute ischemic stroke not meeting such profiles may benefit most from CTP imaging to determine candidacy for revascularization.
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Affiliation(s)
- S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (S.D., M.B., J.W.A., T.G.) Neurology (S.D., J.W.A., S.R., C.B., F.N.), Emory University Hospital, Atlanta, Georgia
| | - R Bammer
- Department of Radiology (R.B.), Stanford University Hospital, Stanford, California
| | - M Straka
- Institut für Radiologie und Nuklearmedizin (M.S.), Kantonsspital Winterthur, Winterthur, Switzerland
| | - M Bowen
- From the Departments of Radiology and Imaging Sciences (S.D., M.B., J.W.A., T.G.)
| | - J W Allen
- From the Departments of Radiology and Imaging Sciences (S.D., M.B., J.W.A., T.G.) Neurology (S.D., J.W.A., S.R., C.B., F.N.), Emory University Hospital, Atlanta, Georgia
| | - S Rangaraju
- Neurology (S.D., J.W.A., S.R., C.B., F.N.), Emory University Hospital, Atlanta, Georgia
| | - J Kang
- Department of Biostatistics (J.K.), University of Michigan, Ann Arbor, Michigan
| | - T Gleason
- From the Departments of Radiology and Imaging Sciences (S.D., M.B., J.W.A., T.G.)
| | - C Brasher
- Neurology (S.D., J.W.A., S.R., C.B., F.N.), Emory University Hospital, Atlanta, Georgia
| | - F Nahab
- Neurology (S.D., J.W.A., S.R., C.B., F.N.), Emory University Hospital, Atlanta, Georgia
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Magruder K, Yeager D, Goldberg J, Forsberg C, Litz B, Vaccarino V, Friedman M, Gleason T, Huang G, Smith N. Diagnostic performance of the PTSD checklist and the Vietnam Era Twin Registry PTSD scale. Epidemiol Psychiatr Sci 2015; 24:415-22. [PMID: 24905737 PMCID: PMC5881392 DOI: 10.1017/s2045796014000365] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 11/06/2022] Open
Abstract
AIMS Self-report questionnaires are frequently used in clinical and epidemiologic studies to assess post-traumatic stress disorder (PTSD). A number of studies have evaluated these scales relative to clinician administered structured interviews; however, there has been no formal evaluation of their performance relative to non-clinician administered epidemiologic assessments such as the Composite International Diagnostic Interview (CIDI). We examined the diagnostic performance of two self-report PTSD scales, the PTSD checklist (PCL) and the Vietnam Era Twin Registry (VET-R) PTSD scale, compared to the CIDI. METHODS Data were derived from a large epidemiologic follow-up study of PTSD in 5141 Vietnam Era Veterans. Measures included the PCL, VET-R PTSD scale and CIDI. For both the PCL and VET-R PTSD scale, ROC curves, areas under the curve (AUC), sensitivity, specificity, % correctly classified, likelihood ratios, predictive values and quality estimates were generated based on the CIDI PTSD diagnosis. RESULTS For the PCL and VET-R PTSD scale the AUCs were 89.0 and 87.7%, respectively. Optimal PCL cutpoints varied from the 31-33 range (when considering sensitivity and specificity) to the 36-56 range (when considering quality estimates). Similar variations were found for the VET-R PTSD, ranging from 31 (when considering sensitivity and specificity) to the 37-42 range (when considering quality estimates). CONCLUSIONS The PCL and VET-R PTSD scale performed similarly using a CIDI PTSD diagnosis as the criterion. There was a range of acceptable cutpoints, depending on the metric used, but most metrics suggested a lower PCL cutpoint than in previous studies in Veteran populations.
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Affiliation(s)
- K. Magruder
- Mental Health Service, Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
- Department of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - D. Yeager
- Mental Health Service, Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
- Department of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - J. Goldberg
- Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle, Washington, USA
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - C. Forsberg
- Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle, Washington, USA
| | - B. Litz
- Massachusetts Epidemiology Research and Information Center, VA Boston Healthcare System, Boston, Massachusetts, USA
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - V. Vaccarino
- Departments of Epidemiology and Medicine, Emory University, Atlanta, Georgia, USA
| | - M. Friedman
- Department of Veterans Affairs, National Center for Posttraumatic Stress Disorder, White River Junction, Vermont, USA
- Departments of Psychiatry and Pharmacology & Toxicology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - T. Gleason
- Cooperative Studies Program, Clinical Science Research and Development, VA Office of Research and Development, Washington, DC, USA
| | - G. Huang
- Cooperative Studies Program, Clinical Science Research and Development, VA Office of Research and Development, Washington, DC, USA
| | - N. Smith
- Seattle Epidemiologic Research and Information Center, VA Puget Sound Health Care System, Seattle, Washington, USA
- Department of Epidemiology, University of Washington, Seattle, Washington, USA
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Premakumari V, Chukkapalli S, Rivera M, Velsko I, Phillippi J, Gleason T, Lucas A, Beaver T, Chan E, Kesavalu L. Microrna expression signature in human thoracic and abdominal aortic aneurysms. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.363] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kuhn A, Munns WR, Champlin D, McKinney R, Tagliabue M, Serbst J, Gleason T. Evaluation of the efficacy of extrapolation population modeling to predict the dynamics of Americamysis bahia populations in the laboratory. Environ Toxicol Chem 2001; 20:213-221. [PMID: 11351411] [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: 05/23/2023]
Abstract
An age-classified projection matrix model has been developed to extrapolate the chronic (28-35 d) demographic responses of Americamysis bahia (formerly Mysidopsis bahia) to population-level response. This study was conducted to evaluate the efficacy of this model for predicting the population behavior of A. bahia held (for more than three generations) under controlled laboratory exposure conditions. The research involved the performance of a standard life-cycle test and a multigenerational (greater than three mysid generations, 55 d) assay using A. bahia to experimentally evaluate model predictions regarding population-level risks of chemical exposure. The organic compound para-nonylphenol was chosen as the chemical stressor in assays. This compound is a ubiquitous contaminant and suspected endocrine disruptor. Utilizing data obtained during the standard life-cycle test, aggregate estimates of population growth rate (lambda) and measured p-nonylphenol concentration were used to develop an exposure-response model of population-level effects. These estimates provided the basis of predictions for the long-term dynamics of mysid populations exposed to p-nonylphenol. The veracity of the mysid population model was evaluated through quantitative comparisons of model predictions based on the life-cycle test with dynamics of the experimental populations (multigenerational assay results). The results indicate that the population model was able to project within a few micrograms per liter the concentration where population-level effects would begin to occur (projected 16 micrograms/L from the model vs measured 19 micrograms/L from the multigenerational assay).
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Affiliation(s)
- A Kuhn
- U.S. Environmental Protection Agency, Atlantic Ecology Division, 27 Tarzwell Drive, Narragansett, Rhode Island 02882, USA.
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Rosenfeld RD, Zeni L, Welcher AA, Narhi LO, Hale C, Marasco J, Delaney J, Gleason T, Philo JS, Katta V, Hui J, Baumgartner J, Graham M, Stark KL, Karbon W. Biochemical, biophysical, and pharmacological characterization of bacterially expressed human agouti-related protein. Biochemistry 1998; 37:16041-52. [PMID: 9819197 DOI: 10.1021/bi981027m] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The agouti-related protein gene (Agrp) is a novel gene implicated in the control of feeding behavior. The hypothalamic expression of Agrp is regulated by leptin, and overexpression of Agrp in transgenic animals results in obesity and diabetes. By analogy with the known actions of agouti, these data suggest a role for the Agrp gene product in the regulation of melanocortin receptors expressed in the central nervous system. The availability of recombinant, highly purified protein is required to fully address this potential interaction. A nearly full-length form of AGRP (MKd5-AGRP) was expressed in the cytosolic or soluble fraction of Escherichia coli and appeared as large intermolecular disulfide-bonded aggregates. Following oxidation, refolding, and purification, this protein was soluble, and eluted as a single symmetric peak on RP-HPLC. Circular dichroism studies indicated that the purified protein contains primarily random coil and beta-sheet secondary structure. Sedimentation velocity studies at neutral pH demonstrated that MKd5-AGRP is monomeric at low micromolar concentrations. Mobility shifts observed using SDS-PAGE under reducing and nonreducing conditions for bacterially expressed and mammalian expressed AGRP were identical, an indication of a similar disulfide structure. The purification to homogeneity of a second, truncated form of AGRP (Md65-AGRP) which was expressed in the insoluble or inclusion body fraction is also described. Both forms act as competitive antagonists of alpha-melanocyte stimulating hormone (alpha-MSH) at melanocortin-3 (MC-3) and melanocortin-4 receptors (MC-4). The demonstration that AGRP is an endogenous antagonist with respect to these receptors is a unique mechanism within the central nervous system, and has important implications in the control of feeding.
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Affiliation(s)
- R D Rosenfeld
- Amgen Inc., Thousand Oaks, California 91320-1789, USA.
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Keesler GA, Bray J, Hunt J, Johnson DA, Gleason T, Yao Z, Wang SW, Parker C, Yamane H, Cole C, Lichenstein HS. Purification and activation of recombinant p38 isoforms alpha, beta, gamma, and delta. Protein Expr Purif 1998; 14:221-8. [PMID: 9790884 DOI: 10.1006/prep.1998.0947] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [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: 11/22/2022]
Abstract
p38 is a proline-directed serine/threonine kinase that is activated by inflammatory cytokines and cellular stress. At present, four isoforms of p38 have been identified and termed alpha, beta, gamma, and delta. We expressed each p38 homolog in Escherichia coli and purified the recombinant isoforms. p38alpha and C-terminal Flag-tagged p38beta were purified by Q-Sepharose fast flow, hydroxyapatite, and Q-Sepharose high-performance chromatography. His-tagged p38gamma was purified using Ni2+-NTA resin followed by Mono Q chromatography. Glutathione S-transferase-Flag p38delta was purified using M2 affinity agarose and gel-filtration chromatography. Upstream activators of p38, constitutively active (ca) MKK3 and MKK6, were also cloned, purified, and used to activate each p38 isoform. p38 alpha, gamma, and delta were phosphorylated by both MKK6 and caMKK3. p38beta was phosphorylated only by MKK6. Mass spectrometry analysis and kinase assays showed that MKK6 was the superior reagent for phosphorylating and activating all p38 isoforms.
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May AK, Sawyer RG, Gleason T, Whitworth A, Pruett TL. In vivo cytokine response to Escherichia coli alpha-hemolysin determined with genetically engineered hemolytic and nonhemolytic E. coli variants. Infect Immun 1996; 64:2167-71. [PMID: 8675322 PMCID: PMC174051 DOI: 10.1128/iai.64.6.2167-2171.1996] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [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: 02/01/2023] Open
Abstract
Alpha-hemolysin is an Escherichia coli exotoxin that enhances bacterial virulence, has profound effects on leukocytes in vitro, and induces the release of interleukin-1 (IL-1) but not tumor necrosis factor (TNF) from human monocytes in vitro. The purpose of this study was to examine alpha-hemolysin's influence on virulence and TNF and IL-1 production in vivo. Two genetically engineered, isogeneic strains of E. coli were used; one variant produces alpha-hemolysin, and the other does not. Male BALB/c mice were injected with either of the two variants and serum TNF and IL-1 were assayed. These results were compared with those obtained from the injection of either of two serotypes of lipopolysaccharide (LPS). The nonhemolytic E. coli strain produced no mortality and no significant elevation of serum TNF or IL-1 levels. In contrast, equal inocula of the hemolytic E. coli strain produced significant mortality and elevation of serum IL-1 levels. No significant elevation of TNF levels was detected in this group despite high-level mortality. A pattern of induction of mortality and elevation of serum IL-1 levels without elevation of serum TNF levels is distinct from the pattern typical of LPS. In these experiments, both serotypes of LPS caused elevations of TNF and IL-1 levels whether or not mortality was induced. Thus, alpha-hemolysin produces a cytokine response in vivo that is similar to that previously demonstrated in vitro by Bhakdi et al. (S. Bhakdi, M. Muhly, S. Korom, and G. Schmidt, J. Clin. Invest. 85:1746-1753, 1990) and appears to induce mortality independently of serum TNF.
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Affiliation(s)
- A K May
- Department of Surgery, Surgical Infectious Disease Laboratory, University of Virginia, Charlottesville 22908, USA
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Hensel MR, Cavanagh T, Lanier AP, Gleason T, Bouwens B, Tanttila H, Reimer A, Dinwiddie RL, Hayes JC. Quit rates at one year follow-up of Alaska Native Medical Center Tobacco Cessation Program. Alaska Med 1995; 37:43-7. [PMID: 7661325] [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: 01/26/2023]
Abstract
The prevalence of tobacco use in the Alaska Native population is unusually high, as high as 50% in both adult men and women. In June of 1992, the Alaska Native Medical Center and the Alaska Area Native Health Service began a tobacco cessation program using behavioral modification classes and transdermal nicotine patches. Patients were subsequently followed at three month intervals for a year to assess smoking status. To date, 193 people have completed the program with at least three months having elapsed since completion of classes. The quit rates at three, six, nine, and twelve months were 31%, 30%, 24%, 21% respectively. The long-term quit rates for this tobacco cessation program are comparable to the rates of other studies which have included both behavioral modification and transdermal nicotine.
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Affiliation(s)
- M R Hensel
- University of Washington Medical School, Seattle, USA
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Abstract
Preliminary results suggest that thermal balloon angioplasty (BA) may produce plaque welding, decreased elastic recoil, and increased luminal caliber. The authors report results of a simple method of thermal BA in a canine model. Seven mongrel dogs (15-25 kg) underwent conventional BA of each iliac artery with balloons that were 1-2 mm larger than the vessel lumen. The balloons were then perfused with a mixture of saline and contrast material at either 25 degrees C (control) or 100 degrees C for 1 minute. Compared with baseline measurements, thermal BA produced greater lumen enlargement (+16.7%) than control BA (+3.4%) immediately after the procedure (P less than .05). This trend persisted in vessels studied after a delay of 2, 4, or 12 weeks. Histologic sections from specimens studied after a delay demonstrated intimal hyperplasia in both the thermally treated and control arteries. Medial sclerosis was consistently seen in the thermally treated arteries. The authors conclude that thermal BA results in immediate and delayed increases in arterial diameter compared with conventional BA due to decreased elastic recoil and medial sclerosis.
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Affiliation(s)
- T Gleason
- Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City 52242
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14
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Cybulski GR, Greager JA, Gleason T, Reyes MG, Homsi MF. Malignant schwannoma (neurofibrosarcoma) metastatic to spine. Surgical decompression and stabilization. Spine (Phila Pa 1976) 1989; 14:549-51. [PMID: 2727803 DOI: 10.1097/00007632-198905000-00018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- G R Cybulski
- Division of Neurosurgery, Cook County Hospital, Chicago, Illinois
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15
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Cybulski GR, Anson J, Gleason T, Homsi MF, Reyes MG. Aneurysmal bone cyst of the thoracic spine: treatment by excision and segmental stabilization with Luque rods. Neurosurgery 1989; 24:273-6. [PMID: 2918979 DOI: 10.1227/00006123-198902000-00020] [Citation(s) in RCA: 11] [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: 01/03/2023] Open
Abstract
Preoperative radiological evaluation with magnetic resonance imaging and computed tomography was valuable in planning the surgical management of a destructive lesion of the posterior elements of the thoracic spine that was causing spinal cord compression in an 18-year-old woman. Preoperative recognition of bilateral involvement of the pedicles in addition to the laminae and spinous process led to use of prophylactic segmental stabilization of the spine with Luque rods after successful excision of an aneurysmal bone cyst. This case provides an example of the usefulness of computed tomographic scanning and magnetic resonance imaging in assessing the distribution and location of vertebral tumor and its potential effect on spinal stability. The efficacy of combining radical excision with stabilization for treatment of aneurysmal bone cysts of the spine is emphasized.
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Affiliation(s)
- G R Cybulski
- Department of Surgery, Cook County Hospital, Chicago, Illinois
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16
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Stetler GL, Forsyth C, Gleason T, Wilson J, Thompson RC. Secretion of Active, Full– and Half–Length Human Secretory Leukocyte Protease Inhibitor by Sacchammyces Cerevisiae. Nat Biotechnol 1989. [DOI: 10.1038/nbt0189-55] [Citation(s) in RCA: 9] [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: 11/09/2022]
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17
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Abstract
We have described a patient with an infected myxoma attached to the tricuspid valve. Unlike those previously reported, our patient had a significant underlying disease, chronic lymphocytic leukemia, and presented the problem of multiple pulmonary infiltrates in an immunosuppressed host, with persistently negative blood cultures. The infecting bacterium, isolated only at operation, was a recently described fastidious gram-negative rod belonging to the CDC group dysgonic fermenter-2.
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18
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Gleason T, Prinz RA, Kirsch EP, Jablokow V, Greenlee HB. Tuberculosis of the duodenum. Am J Gastroenterol 1979; 72:36-40. [PMID: 463847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
At present, tuberculosis of the intestinal tract is rare in the United States. When gastrointestinal disease is seen, 85--90% of cases involve the ileocecal area. A case of tuberculosis of the duodenum unassociated with pulmonary disease is described. Although fiberoptic enndoscopy, abdominal ultrasonography and computerized axial tomography were used, the diagnosis required laprotomy with biopsy. The clinical manifestations, diagnostic investigations and treatment of the 49 previously reported cases of duodenal tuberculosis are also reviewed.
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