Suchergebnisse

This report described the clinical signs, pathological and immunohistochemical findings associated with a peripheral primitive neuroectodermal tumor (pPNET) in the nasal cavity of a heifer. The heifer exhibited severe breathing difficulty and dysphagia, which were increased over the last thirty days. At autopsy, a large, firm, and whitish mass was found occupying the left frontal sinus and most of the left nasal cavity. Histologically, a malignant neoplastic proliferation was observed, which was composed of small cells typically arranged in nests and mantles, occasionally arranged in palisade, interspersed with moderate connective stroma. The neoplastic cells exhibited strong immunoreactivity to synaptophysin, mild, multifocal immunoreactivity to neuron-specific enolase and vimentin immunoreactivity, with moderate, and multifocal immunoreactivity S-100 protein. These findings suggest that pPNETs should be included in the differential diagnosis of proliferative and obstructive lesions in the nasal cavity of young cattle.

BACKGROUND: The severity of Obsessive-Compulsive Disorder (OCD) varies significantly among probands. No study has specifically investigated the genetic base of OCD severity. A previous study from our group found an OCD polygenic risk score to predict pre- and post-treatment severity. This study explores the genomic bases of OCD severity. METHODS: We administered the Yale-Brown Obsessive Compulsive Scale (Y-BOCS) to 401 patients at their first visit to our clinic to measure their OCD severity. Genotyping data was collected by using the Infinium PsychArray-24 BeadChip kit (Illumina). We analyzed genetic association with OCD severity in a linear regression analysis at single-nucleotide polymorphism (SNP)- and gene-levels, this last also considering rare variants. Enrichment analyses were performed from gene-based analyses' results. RESULTS: No SNP reached significant association (p < 10-8) with the YBOCS. Six markers showed suggestive association (p < 10-5). The top SNP was an intergenic variant in chromosome 2: rs7578149 (p < 1.89 × 10-6), located in a region suggestively associated with MDD. Linkage disequilibrium was found for two clusters of SNPs located between SLC16A14 and SP110 in chromosome 2, all of them forming one peak of association. Enrichment analyses revealed OCD genes to be associated with porin activity (FDR = 0.01) and transmembrane structure (FDR = 0.04). LIMITATIONS: The size of the sample and the transversal nature of the severity measure are limitations of this study. CONCLUSION: This study contributes to better characterize OCD at an individual level, helping to know more about the prognosis of the disorder and develop more individualized treatments ; This study was supported in part by the Carlos III Health Institute (PI16/00950, PI18/00856); FEDER funds ('A way to build Europe') and by the Agency for Management of University and Research Grants of the Catalan Government (2014SGR1672). MA was supported by the Secretariat for Universities and Research of the Ministry of Business and Knowledge of the Government of Catalonia. Grant co-funded by the European Social Fund (ESF) "ESF, Investing in your future" (2017 FI_B 00327). ER was supported by a Juan Rodés contract (JR14/00038)

Proliferative enteropathy (PE), also known as ileitis, is a disease caused by the bacterium Lawsonia intracellularis. This disease is characterized by diarrhea and ill-thrift. The aim of this study is to describe a PE outbreak in rabbits that occurred in Southern Brazil. The farm had 700 rabbits at the time the outbreak occurred. The clinical signs were severe diarrhea, dehydration, and apathy. Necropsy was performed in 33 rabbits, and the most evident macroscopic findings were thickening of the intestinal wall, intestinal loops distended by large amounts of gas, and liquid feces. Histopathological examination demonstrated a marked proliferation of enterocytes in intestinal crypts, decrease number of goblet cells, and crypts microabscesses. Silver impregnation technique (Warthin-Starry) demonstrated in intestinal crypts inside of enterocytes cytoplasm, curved vibrioid bacteria compatible with L. intracellularis. Immunohistochemical staining with anti-L. intracellularis confirmed the agent presence. PCR was performed and L. intracellularis was confirmed as the etiological agent.