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1.
J Vet Intern Med ; 32(1): 340-347, 2018 Jan.
Article in English | MEDLINE | ID: mdl-29106755

ABSTRACT

BACKGROUND: GM2-gangliosidosis is a fatal neurodegenerative lysosomal storage disease (LSD) caused by deficiency of either ß-hexosaminidase A (Hex-A) and ß-hexosaminidase B (Hex-B) together, or the GM2 activator protein. Clinical signs can be variable and are not pathognomonic for the specific, causal deficiency. OBJECTIVES: To characterize the phenotype and genotype of GM2-gangliosidosis disease in an affected dog. ANIMALS: One affected Shiba Inu and a clinically healthy dog. METHODS: Clinical and neurologic evaluation, brain magnetic resonance imaging (MRI), assays of lysosomal enzyme activities, and sequencing of all coding regions of HEXA, HEXB, and GM2A genes. RESULTS: A 14-month-old, female Shiba Inu presented with clinical signs resembling GM2-gangliosidosis in humans and GM1-gangliosidosis in the Shiba Inu. Magnetic resonance imaging (MRI) of the dog's brain indicated neurodegenerative disease, and evaluation of cerebrospinal fluid (CSF) identified storage granules in leukocytes. Lysosomal enzyme assays of plasma and leukocytes showed deficiencies of Hex-A and Hex-B activities in both tissues. Genetic analysis identified a homozygous, 3-base pair deletion in the HEXB gene (c.618-620delCCT). CONCLUSIONS AND CLINICAL IMPORTANCE: Clinical, biochemical, and molecular features are characterized in a Shiba Inu with GM2-gangliosidosis. The deletion of 3 adjacent base pairs in HEXB predicts the loss of a leucine residue at amino acid position 207 (p.Leu207del) supporting the hypothesis that GM2-gangliosidosis seen in this dog is the Sandhoff type. Because GM1-gangliosidosis also exists in this breed with almost identical clinical signs, genetic testing for both GM1- and GM2-gangliosidosis should be considered to make a definitive diagnosis.


Subject(s)
Dog Diseases/genetics , Gangliosidoses, GM2/veterinary , Hexosaminidase B/genetics , Sandhoff Disease/veterinary , Animals , Brain/diagnostic imaging , Dog Diseases/diagnostic imaging , Dog Diseases/pathology , Dogs , Female , Gangliosidoses, GM2/diagnostic imaging , Gangliosidoses, GM2/genetics , Magnetic Resonance Imaging/veterinary , Sandhoff Disease/diagnostic imaging , Sandhoff Disease/genetics , Sequence Analysis, Protein , Sequence Deletion
2.
Ann Plast Surg ; 34(6): 657-9, 1995 Jun.
Article in English | MEDLINE | ID: mdl-7661547

ABSTRACT

A patient with a proliferating trichilemmal tumor on the dorsum of a hand is described. A surgical excision was performed, and the skin defect was covered with a distally based posterior interosseous island flap. In the operation, an iron fragment was found beneath the mass, and this was thought to have triggered development of the tumor.


Subject(s)
Epidermal Cyst/pathology , Skin Neoplasms/pathology , Aged , Aged, 80 and over , Epidermal Cyst/surgery , Foreign Bodies , Hand , Humans , Iron , Male , Skin Neoplasms/surgery , Surgical Flaps
3.
Br J Plast Surg ; 47(8): 579-80, 1994 Dec.
Article in English | MEDLINE | ID: mdl-7697289

ABSTRACT

An accessory scrotum is a rare congenital anomaly. The authors report the case of an accessory scrotum in the mid-perineum which was not associated with any other anomalies, and describe the surgical result.


Subject(s)
Choristoma/pathology , Perineum/pathology , Scrotum , Choristoma/surgery , Humans , Infant, Newborn , Male , Perineum/surgery
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