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Open Access Epidemiology and Characterization of Seizures in a Pedigreed Baboon Colony

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Abstract:

This study evaluated the incidence, prevalence, and clinical features of seizures in a pedigreed captive colony of baboons. The association of seizures with subspecies, age, sex, and various clinical features was assessed. Records for 1527 captive, pedigreed baboons were reviewed, and 3389 events were identified in 1098 baboons. Of these events, 1537 (45%) represented witnessed seizures, whereas the remaining 1852 presented with craniofacial trauma or episodic changes in behavior that were suggestive, but not diagnostic, of seizure activity. Seizures were generalized myoclonic or tonic–clonic, with two thirds of the events witnessed in the morning. Seizure onset occurred in adolescence (age, 5 y), with an average of 3 seizures in a lifetime. The incidence and prevalence of seizures were 2.5% and 26%, respectively, whereas the prevalence of recurrent seizures (that is, epilepsy) was 15%. Seizures were more prevalent in male baboons, which tended to present with earlier onset and more seizures over a lifetime than did female baboons. Seizures were equally distributed between the subspecies; age of onset and seizure recurrences did not differ significantly between subspecies. Clinical features including age of onset, characteristics, and diurnal presentation of seizures in baboons suggested similarities to juvenile myoclonic epilepsy in humans. Facial trauma may be useful marker for epilepsy in baboons, but its specificity should be characterized.

Document Type: Case Report

Affiliations: 1: Department of Neurology and South Texas Comprehensive Epilepsy Center, San Antonio, Texas, USA. szabo@uthscsa.edu 2: Department of Neurology and South Texas Comprehensive Epilepsy Center, San Antonio, Texas, USA 3: Laboratory Animal Research, University of Texas Health Science Center at San Antonio, Texas, USA 4: Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas, USA; Department of Genetics, Texas Biomedical Research Institute, San Antonio, Texas, USA

Publication date: December 1, 2012

More about this publication?
  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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