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Association between uric acid, renal haemodynamics and arterial stiffness over the natural history of type 1 diabetes
Author(s) -
Lytvyn Yuliya,
Bjornstad Petter,
Lovshin Julie A.,
Singh Sunita K.,
Boulet Genevieve,
Farooqi Mohammed A.,
Lai Vesta,
Tse Josephine,
Cham Leslie,
Lovblom Leif E.,
Weisman Alanna,
Keenan Hillary A.,
Brent Michael H.,
Paul Narinder,
Bril Vera,
Advani Andrew,
Sochett Etienne,
Perkins Bruce A.,
Cherney David Z. I.
Publication year - 2019
Publication title -
diabetes, obesity and metabolism
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.445
H-Index - 128
eISSN - 1463-1326
pISSN - 1462-8902
DOI - 10.1111/dom.13665
Subject(s) - medicine , arterial stiffness , effective renal plasma flow , pulse wave velocity , aldosterone , renal function , cardiology , plasma renin activity , hemodynamics , uric acid , diabetes mellitus , endocrinology , renin–angiotensin system , renal blood flow , blood pressure
Aims To examine the relationship between normal plasma uric acid (PUA) levels, renal haemodynamic function, arterial stiffness and plasma renin and aldosterone over a wide range of type 1 diabetes (T1D) durations in adolescents, young adults and older adults. Materials and methods PUA, glomerular filtration rate (GFR), effective renal plasma flow (ERPF), vascular stiffness parameters (aortic augmentation index [AIx], carotid AIx, carotid femoral pulse wave velocity [cfPWV]), and plasma renin and aldosterone were measured during a euglycaemic clamp in people with T1D: 27 adolescents (mean ± SD age 16.8 ± 1.9 years), 52 young adults (mean ± SD age 25.6 ± 5.5 years) and 66 older adults (mean ± SD age 65.7 ± 7.5 years). Results PUA was highest in patients with the longest T1D duration: 197 ± 44 μmol/L in adolescents versus 264 ± 82 μmol/L in older adults ( P < 0.001). Higher PUA correlated with lower GFR only in older adults, even after correcting for age, glycated haemoglobin and sex (β = −2.12 ± 0.56; P = 0.0003), but not in adolescents or young adults. Higher PUA correlated with lower carotid AIx (β = −1.90, P = 0.02) in adolescents. In contrast, PUA correlated with higher cfPWV ( P = 0.02) and higher plasma renin ( P = 0.01) in older adults with T1D. Conclusions The relationship between higher PUA with lower GFR, increased arterial stiffness and renin angiotensin aldosterone system (RAAS) activation was observed only in older adults with longstanding T1D. T1D duration may modify the association between PUA, renal haemodynamic function and RAAS activation, leading to renal vasoconstriction and ischaemia. Further work must determine whether pharmacological PUA‐lowering prevents or reverses injurious haemodynamic and neurohormonal sequelae of longstanding T1D, thereby improving clinical outcomes.