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Sweeney E, Cui Y, DeClercq V, Devichand P, Forbes C, Grandy S, Hicks JMT, Keats M, Parker L, Thompson D, Volodarsky M, Yu ZM, Dummer TJB. Cohort Profile: The Atlantic Partnership for Tomorrow's Health (Atlantic PATH) Study. Int J Epidemiol 2018; 46:1762-1763i. [PMID: 29025120 DOI: 10.1093/ije/dyx124] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2017] [Indexed: 11/14/2022] Open
Affiliation(s)
- E Sweeney
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - Y Cui
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - V DeClercq
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - P Devichand
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - C Forbes
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - S Grandy
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - J M T Hicks
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - M Keats
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - L Parker
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - D Thompson
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - M Volodarsky
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - Z M Yu
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
| | - T J B Dummer
- Atlantic PATH, Dalhousie University, Halifax, NS, Canada
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DeClercq V, McMurray DN, Chapkin RS. Obesity promotes colonic stem cell expansion during cancer initiation. Cancer Lett 2015; 369:336-43. [PMID: 26455770 DOI: 10.1016/j.canlet.2015.10.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/29/2015] [Accepted: 10/01/2015] [Indexed: 02/08/2023]
Abstract
There is an urgent need to elucidate the mechanistic links between obesity and colon cancer. Convincing evidence for the role of Lgr5(+) stem cells in colon tumorigenesis has been established; however, the influence of obesity on stem cell maintenance is unknown. We assessed the effects of high fat (HF) feeding on colonic stem cell maintenance during cancer initiation (AOM induced) and the responsiveness of stem cells to adipokine signaling pathways. The number of colonic GFP(+) stem cells was significantly higher in the AOM-injected HF group compared to the LF group. The Lgr5(+) stem cells of the HF fed mice exhibited statistically significant increases in cell proliferation and decreases in apoptosis in response to AOM injection compared to the LF group. Colonic organoid cultures from lean mice treated with an adiponectin receptor agonist exhibited a reduction in Lgr5-GPF(+) stem cell number and an increase in apoptosis; however, this response was diminished in the organoid cultures from obese mice. These results suggest that the responsiveness of colonic stem cells to adiponectin in diet-induced obesity is impaired and may contribute to the stem cell accumulation observed in obesity.
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Affiliation(s)
- V DeClercq
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
| | - D N McMurray
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA; Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, College Station, TX, USA
| | - R S Chapkin
- Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA; Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, College Station, TX, USA; Department of Nutrition and Food Science, Texas A&M University, College Station, MS 2253, Cater Mattil, TX 77843-2253, USA; Center for Translational Environmental Health Research, Texas A&M University, College Station, TX, USA.
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DeClercq V, Enns JE, Yeganeh A, Taylor CG, Zahradka P. Modulation of cardiovascular function by adipokines. Cardiovasc Hematol Disord Drug Targets 2013; 13:59-72. [PMID: 22882074 DOI: 10.2174/1871529x11313010007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 07/23/2012] [Accepted: 07/31/2012] [Indexed: 11/22/2022]
Abstract
Cardiovascular disease (CVD) and associated risk factors such as obesity remain at the forefront of health concerns. Adipose tissue has been well established as an endocrine organ that becomes dysfunctional with increased adipose tissue mass. The secretion of several adipokines is altered in subjects with abdominal adiposity and these changes to the endocrine balance may contribute to increased CVD risk. The identification and characterization of disease-specific proteins within the adipose tissue offers a novel therapeutic target for prevention or treatment of cardiovascular complications. This review will discuss the latest developments on therapeutic targets within the context of adipokines, such as adiponectin, C1q/ tumor necrosis factor (TNF) related proteins (CTRPs), visfatin, vaspin, chemerin and omentin, and their involvement in obesity-related cardiovascular complications.
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Affiliation(s)
- V DeClercq
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada
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