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PLoS One ; 14(6): e0218763, 2019.
Article in English | MEDLINE | ID: mdl-31242268

ABSTRACT

Cardiac disease is a major cause of morbidity and mortality for adult gorillas. Previous research indicates a sex-based difference with predominantly males demonstrating evidence of left ventricular hypertrophy. To evaluate these findings, we analyzed serum markers with cardiac measures in a large sample of gorillas. The study sample included 44 male and 25 female gorillas housed at American Association of Zoo and Aquariums (AZA)-accredited zoos. Serum samples were collected from fasted gorillas during routine veterinary health exams and analyzed to measure leptin, adiponectin, IGF-1, insulin, ferritin, glucose, triglycerides, and cholesterol. Cardiac ultrasonography via transthoracic echocardiogram was performed simultaneously. Three echocardiographic parameters were chosen to assess cardiac disease according to parameters established for captive lowland gorillas: left ventricular internal diameter, inter-ventricular septum thickness, and left ventricular posterior wall thickness. Our data revealed that high leptin, low adiponectin, and lowered cholesterol were significantly and positively correlated with measures of heart thickness and age in males but not in females. Lowered cholesterol in this population would be categorized as elevated in humans. High leptin and low adiponectin are indicative of increased adiposity and suggests a potential parallel with human obesity and cardiovascular disease in males. Interestingly, while females exhibited increased adiposity with age, they did not progress to cardiac disease.


Subject(s)
Adiposity , Ape Diseases/pathology , Gorilla gorilla , Heart Diseases/veterinary , Adiponectin/blood , Animals , Animals, Zoo , Ape Diseases/blood , Ape Diseases/etiology , Biomarkers/blood , Cholesterol/blood , Female , Gorilla gorilla/anatomy & histology , Gorilla gorilla/blood , Heart Diseases/blood , Heart Diseases/pathology , Heart Ventricles/diagnostic imaging , Heart Ventricles/pathology , Leptin/blood , Male , Risk Factors , Sex Factors
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