Villasenor A, Olagbaju T, Parsley A, Meritet D. Proliferative parathyroid lesions in captive-bred American bullfrogs (Lithobates catesbeianus) with metabolic bone disease.
J Comp Pathol 2023;
203:1-4. [PMID:
37116224 DOI:
10.1016/j.jcpa.2023.03.184]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/06/2023] [Accepted: 03/28/2023] [Indexed: 04/30/2023]
Abstract
Parathyroid gland lesions in anurans are infrequently reported and most often occur secondary to experimental interventions. Husbandry-related parathyroid changes have not been documented in this order of Amphibia. Three American bullfrogs (Lithobates catesbeianus) living in a captive colony were euthanized due to clinical concern for metabolic bone disease secondary to lack of consistent dietary supplementation with vitamin D3. Necropsy revealed cystic dilation and variable proliferation of unidentified structures within the cranial coelom corresponding to the anatomical location of anuran parathyroid glands. Histologically, the structures consisted of sheets and whorls of elongated cells. Immunohistochemistry for pan-cytokeratin revealed strong cytoplasmic staining and Grimelius staining identified neuroendocrine granules in the elongated cells of these structures, supportive of a parathyroid origin.
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