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1.
Sci Rep ; 13(1): 3138, 2023 02 23.
Article in English | MEDLINE | ID: mdl-36823232

ABSTRACT

Canine drug-resistant epilepsy is a prevailing issue in veterinary neurology. Alternative or additional treatment with cannabinoids is showing promising results in seizure management. A crucial component of the endocannabinoid system, cannabinoid receptor type 1 (CB1R), is heavily involved in the control of neurotransmitter release. Knowledge of its distribution in the epileptic brain would serve a better understanding of disease pathology and application of cannabinoids in dogs with epilepsy. CB1R distribution was assessed in sub-regions of hippocampus of dogs with idiopathic epilepsy, structural epilepsy and without cerebral pathology. In dogs with idiopathic epilepsy, significantly decreased CB1R expression compared to control animals was observed in CA1. In dogs with structural epilepsy, a significant increase in CB1R signal intensity in comparison to controls was observed. CB1R expression was higher in the structural group as compared to the idiopathic. Double immunofluorescence showed co-localization between CB1R and an astrocytic marker in about 50% of cells, regardless of the diagnosis. In summary, CB1R expression in canine hippocampus undergoes modification by the epileptic process and the direction of this change depends on the etiology of the disease. The distinct disease-associated CB1R expression needs to be considered in new treatment development for dogs with epilepsy.


Subject(s)
Cannabinoids , Epilepsy , Dogs , Animals , Epilepsy/veterinary , Epilepsy/metabolism , Seizures/metabolism , Cannabinoids/metabolism , Hippocampus/metabolism , Receptors, Cannabinoid/metabolism
2.
J Comp Pathol ; 172: 1-4, 2019 Oct.
Article in English | MEDLINE | ID: mdl-31690406

ABSTRACT

Mycobacterium bovis is the main agent of bovine tuberculosis, but has also zoonotic potential. An 8-month-old female domestic shorthaired cat imported from Ukraine developed wound complications after abdominal surgery. A second surgery performed in Germany showed a focal, partly cystic mass within the mesentery. Despite antimicrobial treatment, the cat did not recover and was humanely destroyed. Grossly, several abdominal lymph nodes were enlarged. Histopathology revealed a mild to moderate, multifocal, granulomatous to pyogranulomatous, partially necrotizing inflammation, most prominent in the abdominal cavity. Within the lesions there were acid-fast bacilli within the cytoplasm of macrophages demonstrated by Ziehl-Neelsen staining. Further investigations revealed M. bovis SB0950 in the affected tissues.


Subject(s)
Mycobacterium bovis/isolation & purification , Surgical Wound/microbiology , Tuberculosis, Bovine/microbiology , Animals , Cat Diseases/microbiology , Cats , Cattle , Female , Lymph Nodes/microbiology , Lymph Nodes/pathology , Macrophages/microbiology , Macrophages/pathology , Surgical Wound/complications , Zoonoses/microbiology
3.
J Small Anim Pract ; 60(6): 384-389, 2019 Jun.
Article in English | MEDLINE | ID: mdl-29380380

ABSTRACT

A 1-year-old dwarf rabbit was presented with sub-acute progressive tetraparesis. Radiography, CT and MRI revealed compressive cervical myelopathy secondary to a complex atlanto-axial malformation including partial aplasia of the atlantal dorsal arch, dens malformation, malarticulation and lateral atlanto-occipital displacement. Owners decided against surgical treatment and elected conservative treatment including analgesia with non-steroidal anti-inflammatory drugs, cage rest and physiotherapy. Within 2 months clinical signs deteriorated and the owner elected euthanasia. Subsequent necropsy confirmed imaging findings. Similar cases described in humans and dogs suggest that partial aplasia of the dorsal arch of the atlas might often be an asymptomatic radiologic finding in these species. In contrast, this first description of a similarly affected rabbit demonstrates that complex atlanto-axial malformations can cause severe clinical signs.


Subject(s)
Atlanto-Axial Joint , Cervical Atlas , Spinal Cord Compression/veterinary , Spinal Cord Diseases/veterinary , Animals , Dogs , Humans , Quadriplegia/veterinary , Rabbits , Radiography
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