Fang Fang1, Kelsey Hazegh2, Derek Sinchar3, Yuelong Guo1, Grier P Page4, Alan E Mast5, Steve Kleinman6, Michael P Busch7, Tamir Kanias2. 1. Division of Biostatistics and Epidemiology, RTI International, Durham, NC, United States of America. 2. Vitalant Research Institute, Denver, CO, United States of America. 3. Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States of America. 4. Division of Biostatistics and Epidemiology, RTI International, Atlanta, GA, United States of America. 5. Versiti Blood Research Institute and Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, WI, United States of America. 6. University of British Columbia, Victoria, BC, Canada. 7. Vitalant Research Institute, San Francisco and Department of Laboratory Medicine, University of California, San Francisco, CA, United States of America.
Abstract
BACKGROUND: Sex hormone intake in blood donors may affect the quality of red blood cell (RBC) products via modulation of RBC function and predisposition to haemolysis during cold storage. The aims of this study were to evaluate the association between female sex hormone intake and RBC storage outcomes, and to examine possible mechanisms by which sex hormones interact with RBCs. MATERIALS AND METHODS: Sex hormone intake by race/ethnicity and menopausal status, and association analyses between hormone intake and donor scores of storage, osmotic or oxidative haemolysis, were evaluated in 6,636 female donors who participated in the National Heart, Lung and Blood Institute's RBC-Omics study. A calcium fluorophore, Fluo-3AM, was used to define RBC calcium influx in response to exogenous sex hormones or transient receptor potential cation (TRPC) channel drugs. RESULTS: Sex hormone intake was more prevalent in premenopausal women from all racial groups (18-31%) than in postmenopausal women (4-8%). Hormone intake was significantly (p<0.0001) associated with reduced storage haemolysis in all females, reduced osmotic haemolysis in postmenopausal donors (23.1±10.2% vs 26.8±12.0% in controls, p<0.001), and enhanced susceptibility to oxidative haemolysis in premenopausal women. In vitro, supraphysiological levels of progesterone (10 μmol/L), but not 17β-oestradiol or testosterone, inhibited calcium influx into RBC and was associated with lower spontaneous haemolysis after 30 days of cold storage (0.95±0.18% vs 1.85±0.35% in controls, p<0.0001) or in response to a TRPC6 activator. CONCLUSIONS: Sex hormone intake in female donors is associated with changes in RBC predisposition to haemolysis. Menstrual status and the type of hormone preparation may contribute to differences in haemolytic responses of female RBCs to osmotic and oxidative stress. Progesterone modulates calcium influx into RBC via a mechanism that may involve interactions with membrane TRPC6 channels.
BACKGROUND: Sex hormone intake in blood donors may affect the quality of red blood cell (RBC) products via modulation of RBC function and predisposition to haemolysis during cold storage. The aims of this study were to evaluate the association between female sex hormone intake and RBC storage outcomes, and to examine possible mechanisms by which sex hormones interact with RBCs. MATERIALS AND METHODS: Sex hormone intake by race/ethnicity and menopausal status, and association analyses between hormone intake and donor scores of storage, osmotic or oxidative haemolysis, were evaluated in 6,636 female donors who participated in the National Heart, Lung and Blood Institute's RBC-Omics study. A calcium fluorophore, Fluo-3AM, was used to define RBC calcium influx in response to exogenous sex hormones or transient receptor potential cation (TRPC) channel drugs. RESULTS: Sex hormone intake was more prevalent in premenopausal women from all racial groups (18-31%) than in postmenopausal women (4-8%). Hormone intake was significantly (p<0.0001) associated with reduced storage haemolysis in all females, reduced osmotic haemolysis in postmenopausal donors (23.1±10.2% vs 26.8±12.0% in controls, p<0.001), and enhanced susceptibility to oxidative haemolysis in premenopausal women. In vitro, supraphysiological levels of progesterone (10 μmol/L), but not 17β-oestradiol or testosterone, inhibited calcium influx into RBC and was associated with lower spontaneous haemolysis after 30 days of cold storage (0.95±0.18% vs 1.85±0.35% in controls, p<0.0001) or in response to a TRPC6 activator. CONCLUSIONS: Sex hormone intake in female donors is associated with changes in RBC predisposition to haemolysis. Menstrual status and the type of hormone preparation may contribute to differences in haemolytic responses of female RBCs to osmotic and oxidative stress. Progesterone modulates calcium influx into RBC via a mechanism that may involve interactions with membrane TRPC6 channels.
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Authors: Kelsey Hazegh; Fang Fang; Marjorie D Bravo; Johnson Q Tran; Marcus O Muench; Rachael P Jackman; Nareg Roubinian; Lorenzo Bertolone; Angelo DʼAlessandro; Larry Dumont; Grier P Page; Tamir Kanias Journal: Transfusion Date: 2020-11-04 Impact factor: 3.157