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Urinary catecholamine and metadrenaline to creatinine ratios in dogs with a phaeochromocytoma


Kook, P H; Grest, P; Quante, S; Boretti, F S; Reusch, C E (2010). Urinary catecholamine and metadrenaline to creatinine ratios in dogs with a phaeochromocytoma. Veterinary Record, 166(6):169-174.

Abstract

Urinary adrenaline (epinephrine), noradrenaline, dopamine, metadrenaline (metanephrine) and normetadrenaline to creatinine ratios were measured from spot samples of seven client-owned dogs with a histologically confirmed phaeochromocytoma. Urine was collected on day 0 in the hospital in six dogs, and additionally on days 2, 6 and 7 after discharge in two of these dogs. In one dog, urine was sampled on day 7 only. Samples were also collected from 10 healthy control dogs on days 0, 1 and 7. In dogs with phaeochromocytomas, normetadrenaline:creatinine ratios at all time points ranged from 103 to 6430 nmol/mmol. From day 0, ratios of samples taken at the hospital (range 157 to 925 nmol/mmol) were significantly higher (P<0.0012) compared with control samples (range 14 to 91 nmol/mmol). The highest normetadrenaline:creatinine ratios were found in two dogs with bilateral phaeochromocytomas. Adrenaline:creatinine and noradrenaline:creatinine ratios were also significantly increased (P<0.016) in dogs with a phaeochromocytoma at day 0 compared with controls, although the difference was less pronounced than that between controls and dogs with a phaeochromocytoma for the normetadrenaline:creatinine ratio. Urine normetadrenaline:creatinine ratios may be useful in the diagnosis of canine phaeochromocytomas.

Abstract

Urinary adrenaline (epinephrine), noradrenaline, dopamine, metadrenaline (metanephrine) and normetadrenaline to creatinine ratios were measured from spot samples of seven client-owned dogs with a histologically confirmed phaeochromocytoma. Urine was collected on day 0 in the hospital in six dogs, and additionally on days 2, 6 and 7 after discharge in two of these dogs. In one dog, urine was sampled on day 7 only. Samples were also collected from 10 healthy control dogs on days 0, 1 and 7. In dogs with phaeochromocytomas, normetadrenaline:creatinine ratios at all time points ranged from 103 to 6430 nmol/mmol. From day 0, ratios of samples taken at the hospital (range 157 to 925 nmol/mmol) were significantly higher (P<0.0012) compared with control samples (range 14 to 91 nmol/mmol). The highest normetadrenaline:creatinine ratios were found in two dogs with bilateral phaeochromocytomas. Adrenaline:creatinine and noradrenaline:creatinine ratios were also significantly increased (P<0.016) in dogs with a phaeochromocytoma at day 0 compared with controls, although the difference was less pronounced than that between controls and dogs with a phaeochromocytoma for the normetadrenaline:creatinine ratio. Urine normetadrenaline:creatinine ratios may be useful in the diagnosis of canine phaeochromocytomas.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Institute of Veterinary Pathology
05 Vetsuisse Faculty > Veterinary Clinic > Department of Small Animals
Dewey Decimal Classification:570 Life sciences; biology
Date:2010
Deposited On:17 Feb 2011 13:08
Last Modified:05 Apr 2016 14:14
Publisher:British Veterinary Association
ISSN:0042-4900
Publisher DOI:https://doi.org/10.1136/vr.b4760
PubMed ID:20139380

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