%0 Journal Article %T The angiotensin II type 1 receptor blocker azilsartan can overwhelm the sympathetic nerve activation stimulated by coadministration of calcium channel blockers %A Junichiro Hayano %A Ken Kiyono %A Masashi Mizuno %A Michio Fukuda %A Minamo Ono %A Nobuyuki Ohte %A Ryo Sato %A Toshiyuki Miura %A Yoshiharu Yamamoto %A Yukako Isobe-Sasaki %J Journal of the Renin %@ 1752-8976 %D 2019 %R 10.1177/1470320319839525 %X In our recent study, non-Gaussianity of heart rate variability (¦Ë25s), an indicator of sympathetic nerve activity, did not change during two-day treatment with the angiotensin II type 1 receptor blocker (ARB) azilsartan. Coadministration of calcium channel blockers (CCBs) might affect the study results. In this subanalysis, 20 patients with chronic kidney disease (14 men; age 61¡À15 years) were divided into three groups: patients with coadministration of L-type CCB, patients without coadministration of CCB, and patients with coadministration of sympathoinhibitory (L/T- or L/T/N-type) CCB. ¦Ë25s was calculated separately in daytime and nighttime. Daytime ¦Ë25s at baseline was higher in patients with L-type CCB coadministration (0.62¡À0.18, n = 5) compared with those without CCB (0.49¡À0.13, n = 11) and those with sympathoinhibitory CCB (0.46¡À0.06, n = 4). The relationship between the changes in daytime ¦Ë25s and systolic blood pressure was positive in patients with L-type CCB coadministration, whereas the relationship was inverse in the other two groups. A larger decrease in daytime ¦Ë25s was shown in patients with L-type CCB coadministration compared with those in the other two groups. CCBs, as well as diuretics, are recommended as second-line antihypertensive agents. Our results suggested that ARBs can overwhelm the activation of sympathetic nerve activity stimulated by coadministration of L-type CCBs %K Angiotensin receptor blocker %K calcium channel blocker %K chronic kidney disease %K heart rate variability %K sympathetic nerve activity %U https://journals.sagepub.com/doi/full/10.1177/1470320319839525