101. Association of betaine with blood pressure in dialysis patients
- Author
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Hong Chu, Youwei Bai, Junwei Yang, Zhuxing Sun, Lulu Wang, Chaoqing Gao, Xiurong Li, Lemin Zheng, Wenjin Liu, and Mingming Zhao
- Subjects
Adult ,Male ,medicine.medical_specialty ,Ambulatory blood pressure ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Blood Pressure ,030209 endocrinology & metabolism ,Subgroup analysis ,030204 cardiovascular system & hematology ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Betaine ,Renal Dialysis ,The Kidney and Hypertension ,Internal medicine ,Internal Medicine ,medicine ,Humans ,Correlation of Data ,Dialysis ,business.industry ,Blood Pressure Monitoring, Ambulatory ,Middle Aged ,Blood pressure ,chemistry ,Hypertension ,Ambulatory ,Cardiology ,Kidney Failure, Chronic ,Female ,Hemodialysis ,Cardiology and Cardiovascular Medicine ,business ,Chromatography, Liquid ,Cohort study - Abstract
Mechanisms underlying elevated blood pressure in dialysis patients are complex as a variety of non‐traditional factors are involved. We sought to explore the association of circulating betaine, a compound widely distributed in food, with blood pressure in dialysis patients. We used baseline data of an ongoing cohort study involving patients on hemodialysis. Plasma betaine was measured by high performance liquid chromatography in 327 subjects. Blood pressure level was determined by intradialytic ambulatory blood pressure monitoring. The mean age of the patients was 52.6 ± 11.9 years, and 58.4% were male. Average interdialytic ambulatory systolic and diastolic blood pressure were 138.4 ± 22.7 mm Hg and 84.4 ± 12.5 mm Hg, respectively. Mean plasma betaine level was 37.6 μmol/L. Multiple linear regression analysis revealed significant associations of betaine with both systolic blood pressure (β = −3.66, P = .003) and diastolic blood pressure (β = −2.00, P = .004). The associations persisted even after extensive adjustment for cardiovascular covariates. Subgroup analysis revealed that the association between betaine and blood pressure was mainly limited to female patients. Our data suggest that alteration of circulating betaine possibly contributes to blood pressure regulation in these patients.
- Published
- 2018