Peripheral neuropathy in a copper-deficient goat

This report aimed to describe a case of peripheral neuropathy in a copper-deficient goat, and highlights the clinical, and pathological features of the disease. The goat had low body score, hyporexia, alopecia, achromotrichia, left hindlimb protraction, paralysis with dragging of digit and difficult...

Full description

Saved in:
Bibliographic Details
Published in:Ciência rural Vol. 47; no. 10
Main Authors: Almeida, Valdir Morais de, Chaves, Hisadora Advincula da Silva, Silva Filho, Givaldo Bom da, Ribeiro, Danielle Pimentel, Braga, Thaiza Campelo, Mendonça, Fábio de Souza
Format: Journal Article
Language:English
Published: Santa Maria Universidade Federal de Santa Maria Centro de Ciencias Rurais 01-01-2017
Universidade Federal de Santa Maria
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This report aimed to describe a case of peripheral neuropathy in a copper-deficient goat, and highlights the clinical, and pathological features of the disease. The goat had low body score, hyporexia, alopecia, achromotrichia, left hindlimb protraction, paralysis with dragging of digit and difficulty to stand up and microcytic normochromic anemia. Copper concentration in serum was markedly lower (2.0µmol L-1) whereas the iron serum content was significantly increased (51.0µmol L-1). The main gross alteration was the reduction of the quadriceps vastus laterallis muscle volume. Histologically, there was atrophy of the quadriceps vastus laterallis muscle and presence of satellite cells, infiltration of lymphocytes, macrophages and replacement of the fibers by connective tissue. In the femoral nerve, there was axonal degeneration with myelin sheath expansion and presence of vacuoles, usually in chains and containing axonal debris or macrophages. Clinical, laboratorial and pathologic findings are consistent with peripheral neuropathy due to a severy copper deficiency. RESUMO: Este trabalho tem como objetivo descrever um caso de neuropatia periférica em um caprino com deficiência de cobre e destaca as características clínicas e patológicas da doença. O caprino apresentava baixo escore corporal, hiporexia, alopecia, acromotriquia, protração do membro posterior esquerdo, com arrastar de pinça do membro posterior, dificuldade para se levantar e anemia microcítica normocrômica. A concentração sérica de cobre estava significantemente baixa (2.0µmol L-1), enquanto a concentração de ferro estava alta (51.0µmol L-1). O principal achado de necropsia consistiu em redução do volume do músculo quadríceps vasto lateral. Histologicamente, havia atrofia do músculo quadríceps vasto lateral, infiltrado linfocítico, presença de células satélites, macrófagos e substituição das fibras musculares por tecido conjuntivo. No nervo femoral, havia degeneração axonal com dilatação da bainha de mielina e presença de vacúolos, geralmente em cadeia, contendo, ocasionalmente, restos axonais ou macrófagos. Os achados clínicos, laboratoriais e patológicos são compatíveis com neuropatia periférica devido à deficiência severa de cobre.
ISSN:1678-4596
0103-8478
1678-4596
DOI:10.1590/0103-8478cr20170248