1
|
Aloud BM, Petkau JC, Yu L, McCallum J, Kirby C, Netticadan T, Blewett H. Effects of cyanidin 3- O-glucoside and hydrochlorothiazide on T-cell phenotypes and function in spontaneously hypertensive rats. Food Funct 2020; 11:8560-8572. [PMID: 33021306 DOI: 10.1039/d0fo01778g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Immune system dysfunction may contribute to the pathogenesis of hypertension in spontaneously hypertensive rats (SHR). We examined the effects of the anthocyanin, cyanidin 3-O-glucoside (C3G), and the diuretic, hydrochlorothiazide (HCT), on T-cell function in SHR. Five-week-old male SHR and Wistar-Kyoto (WKY) rats received water (n = 8/SHR; n = 8/WKY), 10 mg kg-1 day-1 C3G (n = 8/SHR; n = 8/WKY), 10 mg kg-1 day-1 HCT (n = 8/SHR; n = 8/WKY), or 10 mg kg-1 day-1 C3G + 10 mg kg-1 day-1 HCT (n = 8/SHR; n = 8/WKY) by oral gavage for 15 weeks. Spleens were used to assess T-cell phenotypes via flow cytometry and concanavalin A stimulated ex vivo cytokine production (IL-2, IL-10, TNFα, IFNγ) using a cytometric bead array. SHR had lower proportions of helper T-cells (Th) that were T-regulatory, CD62Llo, CD62L- and CD25+ compared to WKY. C3G treated SHR had higher proportions of Th that were CD62Llo and CD62L-, while HCT treated rats had higher CD62Lhi and CD62Llo and lower CD62L- compared to SHR control. The proportion of T-regulatory and Th that were CD25+ were not affected by treatment in SHR. Stimulated splenocytes from SHR produced lower concentrations of cytokines compared to WKY. C3G treated SHR produced higher while HCT treated SHR produced lower TNFα and IFNγ concentrations compared to controls. Our findings suggest that C3G has positive effects, whereas HCT further suppresses T-cell function in SHR.
Collapse
Affiliation(s)
- Basma Milad Aloud
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Research Centre, Winnipeg, MB, Canada. and Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB, Canada
| | - Jay C Petkau
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Research Centre, Winnipeg, MB, Canada. and Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Liping Yu
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Research Centre, Winnipeg, MB, Canada. and Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Jason McCallum
- Charlottetown Research and Development Centre, Agriculture and Agri-Food Canada, Charlottetown, PEI, Canada
| | - Chris Kirby
- Charlottetown Research and Development Centre, Agriculture and Agri-Food Canada, Charlottetown, PEI, Canada
| | - Thomas Netticadan
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Research Centre, Winnipeg, MB, Canada. and Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB, Canada and Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada
| | - Heather Blewett
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Research Centre, Winnipeg, MB, Canada. and Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB, Canada and Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB, Canada and Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
2
|
Probable hydrochlorothiazide-induced myopericarditis: first case reported. Case Rep Med 2015; 2015:319086. [PMID: 25861276 PMCID: PMC4377349 DOI: 10.1155/2015/319086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 03/07/2015] [Indexed: 11/25/2022] Open
Abstract
Hydrochlorothiazide has never been reported as a reason for myopericarditis. An African American female, with past history of hypertension, coronary artery disease, and sulfa allergy, presented with indolent onset and retrosternal chest pain which was positional, pleuritic, and unresponsive to sublingual nitroglycerin. Her medications included hydrochlorothiazide (HCTZ) which was started three months ago for uncontrolled hypertension. Significant laboratory parameters included erythrocyte sedimentation rate (ESR) of 47 mm/hr and peak troponin of 0.26 ng/mL. Transthoracic echocardiogram (TTE) revealed preserved ejection fraction with no segmental wall motion abnormalities; however, it showed moderate pericardial effusion without tamponade physiology. We hypothesize that this myopericarditis could be due to HCTZ allergic reaction after all other common etiologies have been ruled out. There is a scarcity of the literature regarding HCTZ as an etiology for pericardial disease, with only one case reported as presumed hydrochlorothiazide-induced pericardial effusion. Management involves discontinuation of HCTZ and starting anti-inflammatory therapy.
Collapse
|