Left Ventricular Hypertrophy in Hypertensive Patients with Autosomal Dominant Polycystic Kidney Disease: Influence of Blood Pressure and Humoral and Neurohormonal Factors

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Abstract

Left ventricular hypertrophy (LVH) is a common finding in hypertensive autosomal dominant polycystic kidney disease (ADPKD) patients. There are few studies on the influence of blood pressure (BP) and nonhemodynamic factors on LVH in these patients. The aim of this study was to evaluate the relationship between BP, humoral and neurohormonal factors and left ventricular mass (LVM) in hypertensive ADPKD patients. In 20 hypertensive ADPKD patients, ambulatory BP was monitored for 24 h, left ventricular dimensions were estimated by echocardiography, and plasma renin activity (PRA), plasma noradrenaline (NA), angiotensin II (Ang II), aldosterone, atrial natriuretic peptide (ANP) and insulin-like growth factor I (IGF-I) were also determined. Twenty age- and sex-matched essential hypertensive subjects served as controls. Ambulatory BP and LVM index were similar in the two groups, although male ADPKD patients had higher LVM indices than their matched controls. Eight ADPKD patients (40%) and 6 essential hypertensives (30%) showed LVH. PRA, Ang II, aldosterone, ANP and IGF-I levels were similar in the two groups, but plasma NA levels were higher in ADPKD patients than in controls (281 ± 158 vs. 160 ± 62 pg/ml, p = 0.004). ADPKD patients with LVH did not differ from those without LVH with regard to humoral and neurohormonal parameters, but had higher ambulatory BP levels. In ADPKD patients, correlation analysis revealed a significant association between LVM index and 24-hour systolic and diastolic BP, but not with any of the hormonal factors evaluated. On multiple regression analysis, 24-hour diastolic BP was the only independent variable linked to LVM index. In conclusion, ambulatory BP is one of the most important determinants of LVM in hypertensive ADPKD patients. Further studies are warranted to elucidate the role of nonhemodynamic factors in the pathogenesis of LVH in this population.

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Sympathetic Activity and Blood Pressure Pattern in Autosomal Dominant Polycystic Kidney Disease Hypertensives

Giovanni Cerasola, Maurizio Li Vecchi, Giuseppe Mulè … (1998)

To study the potential role of sympathetic activity in the pathogenesis of arterial hypertension associated with autosomal dominant polycystic kidney disease (ADPKD) and to analyze its relationship with 24-hour blood pressure pattern, plasma catecholamines and 24-hour ambulatory blood pressure monitoring were evaluated in 30 ADPKD hypertensive patients (of which 17 without and 13 with renal failure) and in 50 essential hypertensives. The groups were matched for sex, body mass index, known duration of hypertension, and clinic blood pressure. Plasma catecholamines, determined in resting position, were higher in ADPKD patients without renal failure than in essential hypertensives. Nighttime diastolic blood pressure was higher and the percentage day-night difference in mean blood pressure was lower in hypertensives with ADPKD compared to patients with essential hypertension. Blood pressure was significantly correlated with plasma noradrenaline in ADPKD patients, independently of renal function. No significant differences were observed between ADPKD patients with and without renal failure, with respect to plasma catecholamines, 24-hour daytime and nighttime ambulatory blood pressures and the percentage day-night difference in mean blood pressure.

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Microalbuminuria in normotensive patients with autosomal-dominant polycystic kidney disease.

Ascensión Martínez-Márquez, Emily J Oliver, Richard Pastor … (1998)

Microalbuminuria (MA) is present in hypertensive autosomal-dominant polycystic kidney disease (ADPKD) patients, but has not been reported in normotensive ADPKD patients. We examined the prevalence of MA and the effect of different determinants on urinary albumin excretion in a group of 42 normotensive ADPKD patients. Metabolic parameters, plasma renin activity and aldosterone and serum angiotensin-converting enzyme (ACE) activity were determined. A 24-h urine sample two or three times over a 6-month period was collected to evaluate MA. Each patient underwent an echocardiography to measure left ventricular mass. Eight patients (19%) showed MA (61.6 mg/day, range 37-164), whereas 34 patients (81%) were normoalbuminuric (8.8 mg/day, range 2-29). The groups were matched for all possible confounding variables, but microalbuminuric patients showed a tendency towards greater systolic blood pressure, plasma renin activity and left ventricular mass. There was no correlation between MA and age, sex, body mass index, systolic or diastolic blood pressure, plasma renin activity, serum ACE levels or left ventricular index. The present study demonstrates a high prevalence of MA in normotensive ADPKD patients. MA may be a predictor of early renal and vascular damage in these patients.

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Influence of humoral and neurohormonal factors on cardiovascular hypertrophy in untreated essential hypertensives.

A P Schroeder, I Sihm, B Mørn … (1996)

In essential hypertension, cardiovascular structure is believed to be influenced by hormonal and by hemodynamic factors. The objective of the present study was, in essential hypertensives, to investigate the relationship between blood pressure (BP) level as well as circulating hormones on the one hand and cardiovascular structure on the other. Seventy-nine untreated essential hypertensives were examined by 24-h ambulatory BP monitoring, echocardiography, microscopy of subcutaneous resistance vessels and analyzes of plasma for angiotensin II (P-Ang II), aldosterone, atrial natriuretic factor and 24-h urinary excretion of catecholamines. Multiple regression analysis showed a statistically significant correlation between P-Ang II and the end diastolic interventricular septal diameter (IVSDd) (R = 0.32, P = .005) and a weak correlation between P-Ang II and the left ventricular posterior wall diameter (R = 0.22, P = .049). These correlations were closer in the subgroup of patients (N = 54) who had never received antihypertensive treatment (R = 0.42/0.32, respectively). A weak, though statistically significant, correlation was found between the catecholamine excretion and systolic BP (R = 0.26, P = .03). A statistically negative correlation existed between catecholamines and end-diastolic left ventricular internal diameter index (R = -0.36, P = .001). No significant relationship was found between hormonal levels and the tunica media structure of the resistance arteries. In conclusion, P-Ang II was in this study significantly correlated to IVSDd, but not to resistance artery structure. In essential hypertension a complex relationship exists between humoral and hemodynamic factors and cardiovascular remodeling.

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Author and article information

Journal

Journal ID (publisher-id): AJN

Journal ID (nlm-ta): Am J Nephrol

Journal ID (doi): 10.1159/issn.0250-8095

Title: American Journal of Nephrology

Publisher: S. Karger AG

ISSN (Print): 0250-8095

ISSN (Electronic): 1421-9670

Publication date Subscription-year: 2000

Publication date (Print): June 2000

Publication date (Electronic): 30 June 2000

Volume: 20

Issue: 3

Pages: 193-200

Affiliations

^aNephrology Service, ^bCardiology Section and ^cResearch Unit, Hospital Universitari de Tarragona Joan XXIII, Department of Medicine and Surgery, University Rovira i Virgili, Tarragona, Spain

Article

Publisher ID: 13583 Other ID: Am J Nephrol 2000;20:193–200

DOI: 10.1159/000013583

PubMed ID: 10878400

SO-VID: 4831850e-4621-4da2-b0c7-a741fbf20829

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Left Ventricular Hypertrophy in Hypertensive Patients with Autosomal Dominant Polycystic Kidney Disease: Influence of Blood Pressure and Humoral and Neurohormonal Factors

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Karger: Nephrology

Most cited references 3

Sympathetic Activity and Blood Pressure Pattern in Autosomal Dominant Polycystic Kidney Disease Hypertensives

Microalbuminuria in normotensive patients with autosomal-dominant polycystic kidney disease.

Influence of humoral and neurohormonal factors on cardiovascular hypertrophy in untreated essential hypertensives.

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