Laparoscopic based renal denervation in a canine neurogenic hypertension model.
BMC Cardiovasc Disord
; 20(1): 285, 2020 06 11.
Article
em En
| MEDLINE
| ID: mdl-32527220
ABSTRACT
BACKGROUND:
Previous renal denervation (RDN) studies showed controversial results in reducing blood pressure. The aim of this study was to provide evidence supporting the effectiveness of laparoscopic-based renal denervation (L-RDN) in treating hypertension.METHODS:
Sixteen Beagle dogs were randomly divided into RDN group (n = 12) and sham group (n = 4). Neurogenic hypertension was generated in all dogs via carotid artery route. L-RDN was performed in the RDN group, with sham operation performed as a control. Blood pressure (BP) changes were recorded at 2, 4, 6, and 8 weeks after the procedure. Changes in serum creatinine (sCr), blood urea nitrogen (BUN) and level of norepinephrine (NE) were analyzed. Histological changes of kidney and renal arteries were also evaluated.RESULTS:
BP and NE levels were significantly elevated after hypertension induction (p < 0.01). Systolic and diastolic BP of RDN group were decreased by 15.5 mmHg and 7.3 mmHg (p < 0.0001 and p = 0.0021, respectively) at the eighth week after L-RDN. Invasive systolic and diastolic BP of RDN group were significantly decreased by 14.5 mmHg and 15.3 mmHg (p < 0.0001). In contrast, there was no significant decrease in blood pressure in the sham group. In addition, RDN group but not the sham group showed a significant decrease in NE levels (p < 0.001), while no significant changes in sCr and BUN were observed in both groups. Pathological examinations showed no discernible damage, tear, or dissection to the renal arteries in RND group.CONCLUSIONS:
L-RDN lowered BP and NE levels in hypertensive dogs without affecting renal artery morphology and kidney function.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artéria Renal
/
Simpatectomia
/
Nervo Vago
/
Pressão Sanguínea
/
Laparoscopia
/
Hipertensão
/
Rim
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
BMC Cardiovasc Disord
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China