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1.
Top Companion Anim Med ; 39: 100433, 2020 Jun.
Article in English | MEDLINE | ID: mdl-32482284

ABSTRACT

A 4-year-old female spayed Pomeranian presented for being unable to use its pelvic limbs after a fall. The dog was paraplegic with absent pelvic limb nociception and a Schiff-Sherrington posture. Radiographs and Computed tomography showed a T11-T12 luxation. Spinal stabilization was performed for pain control. Twenty-four hours following surgery the patient lost pelvic limb reflexes. Twelve hours later she lost cutaneous trunci and forelimb proprioception and had increased respiratory effort. A diagnosis of progressive myelomalacia was made and the patient was euthanized. Most cases of progressive myelomalacia in dogs are due to intervertebral disc herniation. To the authors' knowledge, myelomalacia secondary to spinal fracture has not been reported.


Subject(s)
Dogs/injuries , Intervertebral Disc Displacement/veterinary , Spinal Cord Diseases/veterinary , Spinal Fractures/veterinary , Thoracic Vertebrae , Accidental Falls , Animals , Diagnosis, Differential , Dogs/surgery , Female , Intervertebral Disc Displacement/surgery , Postoperative Complications/diagnosis , Postoperative Complications/veterinary , Spinal Cord Diseases/diagnosis , Spinal Fractures/surgery
2.
Vet Clin Pathol ; 49(1): 11-16, 2020 Mar.
Article in English | MEDLINE | ID: mdl-32201969

ABSTRACT

A 4-year-old male neutered domestic shorthair cat was presented to The Ohio State University College of Veterinary Medicine for a 2-month history of severe weight loss, lethargy, anemia, and bilaterally hyperechoic kidneys with loss of corticomedullary distinction as reported by the referring veterinarian. Relevant initial laboratory results included severe non-regenerative normocytic hypochromic anemia, increased blood urea nitrogen, minimally concentrated urine, proteinuria, and an increased urine protein:creatinine ratio. Cytologic evaluation of a bone marrow aspirate revealed a markedly hypocellular marrow with abundant mucinous material. Gelatinous marrow transformation (GMT) was confirmed histologically by the presence of mucinous material in the bone marrow that stained positive for Alcian blue but negative for periodic acid-Schiff. The cat died despite repeated blood transfusions and supportive care. Gelatinous marrow transformation, immune complex-mediated membranoproliferative glomerulonephritis, and gastrointestinal hemorrhage were observed on autopsy and histology. It is likely that the development of GMT was secondary to chronic kidney disease (CKD) and that CKD, GMT, and gastrointestinal hemorrhage contributed to the cat's non-regenerative anemia.


Subject(s)
Anemia/veterinary , Cat Diseases/pathology , Anemia/pathology , Anemia/therapy , Animals , Blood Transfusion/veterinary , Bone Marrow/pathology , Cat Diseases/therapy , Cats , Fatal Outcome , Male
3.
Exp Dermatol ; 28(4): 383-390, 2019 04.
Article in English | MEDLINE | ID: mdl-30074290

ABSTRACT

In a large-scale ageing study, 30 inbred mouse strains were systematically screened for histologic evidence of lesions in all organ systems. Ten strains were diagnosed with similar nail abnormalities. The highest frequency was noted in NON/ShiLtJ mice. Lesions identified fell into two main categories: acute to chronic penetration of the third phalangeal bone through the hyponychium with associated inflammation and bone remodelling or metaplasia of the nail matrix and nail bed associated with severe orthokeratotic hyperkeratosis replacing the nail plate. Penetration of the distal phalanx through the hyponychium appeared to be the initiating feature resulting in nail abnormalities. The accompanying acute to subacute inflammatory response was associated with osteolysis of the distal phalanx. Evaluation of young NON/ShiLtJ mice revealed that these lesions were not often found, or affected only one digit. The only other nail unit abnormality identified was sporadic subungual epidermoid inclusion cysts which closely resembled similar lesions in human patients. These abnormalities, being age-related developments, may have contributed to weight loss due to impacts upon feeding and should be a consideration for future research due to the potential to interact with other experimental factors in ageing studies using the affected strains of mice.


Subject(s)
Aging/pathology , Nails, Malformed/pathology , Toe Phalanges/pathology , Animals , Bone Remodeling , Cross-Sectional Studies , Epidermal Cyst/complications , Female , Inflammation/etiology , Keratin-1/metabolism , Keratin-10/metabolism , Keratosis/etiology , Longitudinal Studies , Male , Metaplasia/pathology , Mice , Mice, Inbred Strains , Nails, Malformed/etiology , Nails, Malformed/metabolism
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