Amaç: Sol ventrikül hipertrofisi, ekokardiyografinin yaygın kullanımı nedeniyle hipertansiyona bağlı hedef organ hasarı için en sık çalışılan indekstir. Renalaz, esas olarak böbrekler tarafından üretilen, katekolaminleri azaltarak kan basıncını düzenleyen ve kardiyovasküler fonksiyonlara etki eden bir monoamin oksidazdır. Bu çalışmada esansiyel hipertansiyonlu çocuklarda serum renalaz düzeyi ile hipertansif kardiyak değişiklikler arasındaki ilişki sağlıklı kontrol grubu ile karşılaştırıldı.
Gereç ve Yöntemler: Çalışmaya 4-18 yaş (ortalama 15.1 ± 1.9 yıl) arasında 60 hipertansif çocuk (kız/erkek 20/40) dahil edildi. Vücut kitle indeksi normal (4-18, ortalama 14,2 ± 1,3 yıl) ve benzer cinsiyete sahip (kadın/erkek 10/10) 20 sağlıklı çocuk kontrol grubunu oluşturdu. Hipertansif çocukların 30'unda (kadın/erkek: 9/21) ekokardiyografide sol ventrikül hipertrofisi görüldü. Geriye kalan 30 hipertansif hastanın (kadın/erkek: 11/19) ekokardiyografik bulguları normaldi. Hipertansif gruplardan biyokimyasal incelemeler ve renalaz düzeyi için venöz kan örneği alındı. İdrar örnekleri ve 24 saatlik idrar örnekleri toplandı. Hipertansif grupların kan basıncını ölçmek için 24 saatlik ambulatuar kan basıncı izleme (ABPM) kullanıldı. Hipertansif grupların kardiyak değerlendirmesi M-mod ekokardiyografi kullanılarak yapıldı.
Bulgular: Hipertansif gruplarda vücut kitle indeksi normal kan basıncı olan gruba göre anlamlı olarak daha yüksekti (p<0.05). Hipertansif gruplar karşılaştırıldığında beden kitle indeksi açısından anlamlı fark bulunmadı. Tüm gün sistolik, diyastolik; gece sistolik, diyastolik ve gündüz sistolik kan basıncı yükleri, hipertansif sol ventrikül hipertrofik grupta hipertansif hipertrofik olmayan gruba göre anlamlı olarak daha yüksekti (p <0.05). M-mod ekokardiyografide sol ventrikül kitle indeksi, sol ventrikül hipertrofik grupta 39.7 g/m2 ve hipertansif hipertrofik olmayan grupta 27.9 g/m2 olarak bulundu (p <0.05). Kan basıncı yükleri ile sol ventrikül kitle indeksi arasındaki ilişki gruplar arasında karşılaştırıldığında, gündüz sistolik kan basıncı yükü ile artmış sol ventrikül kitle indeksi arasında anlamlı bir ilişki bulundu (p<0.05). Renalaz düzeyi, hipertansif gruplarda normotansif gruba göre anlamlı derecede düşüktü (p <0.05).
Sonuç: Renalaz eksikliği ile artmış sol ventrikül kitle indeksi arasında bir ilişki vardır. Düşük renalaz düzeylerinin erken belirteç olarak kullanılmasının, sol ventrikül hipertrofisi ve uzun dönem hipertansiyon komplikasyonları açısından risk altındaki hastaları belirlemede yararlı ve değerli bir parametre olabileceğine inanıyoruz.
Sağlık Bakanlığı Ankara Çocuk Sağlığı ve Hastalıkları Hematoloji Onkoloji EAH
01.06.2017/14
Objective: Left ventricular hypertrophy is the most commonly studied index for hypertension related target organ damage due to the wide usage of echocardiography. Renalase is a monoamine oxidase, mainly produced by the kidneys, regulating blood pressure by reducing catecholamines and acting on cardiovascular functions. In this study, the relationship between serum renalase level and hypertensive cardiac changes in children with essential hypertension was compared with the healthy control group.
Materials and Methods: A total of 60 hypertensive children (female/male 20/40) aged between 4-18 years (mean 15.1 ± 1.9 years) were included in the study. Twenty healthy children with normal body mass index (4-18, mean14.2 ± 1.3 years) and similar gender (female/male 10/10) formed the control group. In 30 of hypertensive children (female/male: 9/21), echocardiography showed left ventricular hypertrophy. Echocardiographic findings of 30 remaining hypertensive patients (female/male: 11/19) were normal. A venous blood sample was collected from the hypertensive groups for biochemical examinations and renalase level. Urine samples and 24-hour urine samples were collected. 24-hour ambulatory blood pressure monitoring (ABPM) was used to measure blood pressure of hypertensive groups. The cardiac evaluation of hypertensive groups was performed using M-mode echocardiography.
Results: The body mass index was significantly higher in hypertensive groups than the group with normal blood pressure (p <0.05). In comparison of hypertensive groups, no significant difference was found in terms of body mass index. All day systolic, diastolic; night systolic, diastolic, and daytime systolic blood pressure loads were significantly higher in hypertensive left-ventricular hypertrophic group than hypertensive non-hypertrophic group (p <0.05). Left ventricular mass index in M-mode echocardiography, revealed 39.7 g/m2 in the left ventricular hypertrophic group and 27.9 g/m2 in the hypertensive non-hypertrophic group (p <0.05). When the relationship between blood pressure loads and left ventricular mass index was compared between the groups, a significant correlation was found between daytime systolic blood pressure load and increased left ventricular mass index (p <0.05). Renalase level was significantly lower in hypertensive groups compared to normotensive group (p <0.05). There is a relationship between renalase deficiency and increased left ventricular mass index.
Conclusion: There is a correlation between renalase deficiency and increased left ventricular mass index. We believe that utilization of low renalase levels as an early marker may be a useful and valuable parameter for determining the patients at risk for left ventricular hypertrophy and long-term complications of hypertension
01.06.2017/14
Primary Language | Turkish |
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Subjects | Internal Diseases |
Journal Section | ORIGINAL ARTICLES |
Authors | |
Project Number | 01.06.2017/14 |
Publication Date | November 30, 2022 |
Submission Date | October 19, 2021 |
Published in Issue | Year 2022 Volume: 16 Issue: 6 |
The publication language of Turkish Journal of Pediatric Disease is English.
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