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St. Clair CC, Gangadharan A, Pollock SJ, Gilhooly PS, Friesen A, Dorsey B. Gaining momentum on awareness of the ecological effects of railways. Anim Conserv 2017. [DOI: 10.1111/acv.12377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. C. St. Clair
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - A. Gangadharan
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - S. J. Pollock
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - P. S. Gilhooly
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - A. Friesen
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
| | - B. Dorsey
- Department of Biological Sciences; University of Alberta; Edmonton AB Canada
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Royama T, Eveleigh ES, Morin JRB, Pollock SJ, McCarthy PC, McDougall GA, Lucarotti CJ. Mechanisms underlying spruce budworm outbreak processes as elucidated by a 14-year study in New Brunswick, Canada. ECOL MONOGR 2017. [DOI: 10.1002/ecm.1270] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- T. Royama
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - E. S. Eveleigh
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - J. R. B. Morin
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - S. J. Pollock
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - P. C. McCarthy
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - G. A. McDougall
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
| | - C. J. Lucarotti
- Natural Resources Canada; Canadian Forest Service, Atlantic Forestry Centre; 1350 Regent Street P.O. Box 4000 Fredericton New Brunswick E3C 2G6 Canada
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Judge JL, Owens KM, Pollock SJ, Woeller CF, Thatcher TH, Williams JP, Phipps RP, Sime PJ, Kottmann RM. Ionizing radiation induces myofibroblast differentiation via lactate dehydrogenase. Am J Physiol Lung Cell Mol Physiol 2015; 309:L879-87. [PMID: 26254422 DOI: 10.1152/ajplung.00153.2015] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/04/2015] [Indexed: 12/13/2022] Open
Abstract
Pulmonary fibrosis is a common and dose-limiting side-effect of ionizing radiation used to treat cancers of the thoracic region. Few effective therapies are available for this disease. Pulmonary fibrosis is characterized by an accumulation of myofibroblasts and excess deposition of extracellular matrix proteins. Although prior studies have reported that ionizing radiation induces fibroblast to myofibroblast differentiation and collagen production, the mechanism remains unclear. Transforming growth factor-β (TGF-β) is a key profibrotic cytokine that drives myofibroblast differentiation and extracellular matrix production. However, its activation and precise role in radiation-induced fibrosis are poorly understood. Recently, we reported that lactate activates latent TGF-β through a pH-dependent mechanism. Here, we wanted to test the hypothesis that ionizing radiation leads to excessive lactate production via expression of the enzyme lactate dehydrogenase-A (LDHA) to promote myofibroblast differentiation. We found that LDHA expression is increased in human and animal lung tissue exposed to ionizing radiation. We demonstrate that ionizing radiation induces LDHA, lactate production, and extracellular acidification in primary human lung fibroblasts in a dose-dependent manner. We also demonstrate that genetic and pharmacologic inhibition of LDHA protects against radiation-induced myofibroblast differentiation. Furthermore, LDHA inhibition protects from radiation-induced activation of TGF-β. We propose a profibrotic feed forward loop, in which radiation induces LDHA expression and lactate production, which can lead to further activation of TGF-β to drive the fibrotic process. These studies support the concept of LDHA as an important therapeutic target in radiation-induced pulmonary fibrosis.
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Affiliation(s)
- J L Judge
- Department of Environmental Medicine, University of Rochester, Rochester, New York; Lung Biology and Disease Program, University of Rochester, Rochester, New York
| | - K M Owens
- Department of Medicine, Pulmonary and Critical Care Medicine, University of Rochester, Rochester, New York; and
| | - S J Pollock
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - C F Woeller
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - T H Thatcher
- Department of Medicine, Pulmonary and Critical Care Medicine, University of Rochester, Rochester, New York; and Lung Biology and Disease Program, University of Rochester, Rochester, New York
| | - J P Williams
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - R P Phipps
- Department of Environmental Medicine, University of Rochester, Rochester, New York; Department of Medicine, Pulmonary and Critical Care Medicine, University of Rochester, Rochester, New York; and Lung Biology and Disease Program, University of Rochester, Rochester, New York
| | - P J Sime
- Department of Environmental Medicine, University of Rochester, Rochester, New York; Department of Medicine, Pulmonary and Critical Care Medicine, University of Rochester, Rochester, New York; and Lung Biology and Disease Program, University of Rochester, Rochester, New York
| | - R M Kottmann
- Department of Medicine, Pulmonary and Critical Care Medicine, University of Rochester, Rochester, New York; and Lung Biology and Disease Program, University of Rochester, Rochester, New York
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Simpson-Haidaris PJ, Pollock SJ, Ramon S, Guo N, Woeller CF, Feldon SE, Phipps RP. Anticancer Role of PPARgamma Agonists in Hematological Malignancies Found in the Vasculature, Marrow, and Eyes. PPAR Res 2010; 2010:814609. [PMID: 20204067 PMCID: PMC2829627 DOI: 10.1155/2010/814609] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 11/30/2009] [Accepted: 12/16/2009] [Indexed: 12/19/2022] Open
Abstract
The use of targeted cancer therapies in combination with conventional chemotherapeutic agents and/or radiation treatment has increased overall survival of cancer patients. However, longer survival is accompanied by increased incidence of comorbidities due, in part, to drug side effects and toxicities. It is well accepted that inflammation and tumorigenesis are linked. Because peroxisome proliferator-activated receptor (PPAR)-gamma agonists are potent mediators of anti-inflammatory responses, it was a logical extension to examine the role of PPARgamma agonists in the treatment and prevention of cancer. This paper has two objectives: first to highlight the potential uses for PPARgamma agonists in anticancer therapy with special emphasis on their role when used as adjuvant or combined therapy in the treatment of hematological malignancies found in the vasculature, marrow, and eyes, and second, to review the potential role PPARgamma and/or its ligands may have in modulating cancer-associated angiogenesis and tumor-stromal microenvironment crosstalk in bone marrow.
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Affiliation(s)
- P. J. Simpson-Haidaris
- Department of Medicine/Hem-Onc Division, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
- Department of Microbiology and Immunology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
- Department of Pathology and Laboratory Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - S. J. Pollock
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - S. Ramon
- Department of Microbiology and Immunology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - N. Guo
- Department of Opthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - C. F. Woeller
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - S. E. Feldon
- Department of Opthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
| | - R. P. Phipps
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
- Department of Opthalmology, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
- The Lung Biology and Disease Program, School of Medicine and Dentistry, University of Rochester, Rochester, NY 14642, USA
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Abstract
Three years of field data, classical linear reservoir theory, and a new dissolution model confirm the hypothesis that residual chloride from highway deicing applications dissolves into precipitation throughout the year. The measured input includes 52 storm hyetographs and logs of salt and premix applications on an access road with a closed drainage system subject to runoff, interflow, and baseflow. The output data feature discharge and conductivity in an outlet weir measured continuously from February 1998 to May 2000. Individual storm hydrographs and pollutographs yield calibrated first flush dissolved chloride concentrations and residual solid chloride loads that persist at appreciable levels over the entire period of record. The storm calibrations imply a source strength w of 2.01 x 10(-6) s(-1) that accurately models chloride dissolution kinetics through three salt seasons on the access road. This w rests on physically plausible values for the depression storage depth zeta (3 mm) and porosity n (0.40) that store the residual chloride.
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Affiliation(s)
- D W Ostendorf
- Civil and Environmental Engineering Department, University of Massachusetts, Amherst 01003, USA.
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Kaufman J, Graf BA, Leung EC, Pollock SJ, Koumas L, Reddy SY, Blieden TM, Smith TJ, Phipps RP. Fibroblasts as sentinel cells: role of the CDcd40-CDcd40 ligand system in fibroblast activation and lung inflammation and fibrosis. Chest 2001; 120:53S-55S. [PMID: 11451915 DOI: 10.1378/chest.120.1_suppl.s53] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- J Kaufman
- University of Rochester School of Medicine and Dentistry, Cancer Center and Department of Microbiology and Immunology, Rochester, NY 14642, USA
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Phipps RP, Pollock SJ, Kaur K, Kaufman J, Borrello MA, Graf BA, Nazarenko D, Roberts LJ, Morrow JD, Palis J, Ryan DJ, Bennett JM. Expression of cyclooxygenase-2 and prostaglandins by B-1 cells and B-CLL cells. Curr Top Microbiol Immunol 2001; 252:293-300. [PMID: 11187084 DOI: 10.1007/978-3-642-57284-5_30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
MESH Headings
- Animals
- Antibodies, Anti-Idiotypic/pharmacology
- B-Lymphocyte Subsets/enzymology
- B-Lymphocyte Subsets/metabolism
- B-Lymphocyte Subsets/pathology
- CD40 Ligand/immunology
- Cell Differentiation
- Cyclooxygenase 1
- Cyclooxygenase 2
- Dinoprostone/biosynthesis
- Dinoprostone/genetics
- Enzyme Induction
- Gene Expression Regulation, Leukemic
- Humans
- Inflammation/enzymology
- Inflammation/metabolism
- Inflammation/pathology
- Interferon-gamma/pharmacology
- Isoenzymes/biosynthesis
- Isoenzymes/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/enzymology
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Lipopolysaccharides/pharmacology
- Lymphocyte Activation/drug effects
- Macrophages/immunology
- Macrophages/pathology
- Membrane Proteins
- Mice
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplastic Stem Cells/enzymology
- Neoplastic Stem Cells/metabolism
- Prostaglandin-Endoperoxide Synthases/biosynthesis
- Prostaglandin-Endoperoxide Synthases/genetics
- Prostaglandins/biosynthesis
- Prostaglandins/genetics
- RNA, Messenger/biosynthesis
- Th2 Cells/immunology
- Tumor Cells, Cultured/metabolism
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Affiliation(s)
- R P Phipps
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, USA
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Dmitrasinovic V, Pollock SJ. Isospin-breaking corrections to nucleon electroweak form factors in the constituent quark model. Phys Rev C Nucl Phys 1995; 52:1061-1072. [PMID: 9970594 DOI: 10.1103/physrevc.52.1061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Pollock SJ, Fortson EN, Wilets L. Atomic parity nonconservation: Electroweak parameters and nuclear structure. Phys Rev C Nucl Phys 1992; 46:2587-2600. [PMID: 9968389 DOI: 10.1103/physrevc.46.2587] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Frederico T, Henley EM, Pollock SJ, Ying S. Neutrino- and antineutrino-deuteron elastic scattering and the axial isoscalar nucleon current. Phys Rev C Nucl Phys 1992; 46:347-356. [PMID: 9968115 DOI: 10.1103/physrevc.46.347] [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: 05/22/2023]
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Workman RL, Naus HW, Pollock SJ. Form factors and gauge invariance in pion photoproduction. Phys Rev C Nucl Phys 1992; 45:2511-2513. [PMID: 9968019 DOI: 10.1103/physrevc.45.2511] [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: 05/22/2023]
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