Project description:To investigate pre-existing mucosal immunity in equine herpesvirus type 1 (EHV-1) immune and non-immune horses during experimental viral challenge. RNAseq was performed on nasal mucosal swab samples from immune and non-immune horses from pre (d-2), early (d1pi and d3pi), mid (d8pi and d10pi), and late (d18pi) infection.
Project description:Sixteen severly RAO (Recurrent Airway Obstruction) affected horses were studied. All RAO affected male horses were hybridized with GSM1332974 (Thoroughbred male 1, male reference), and the female horses were with GSM1332975 (Thoroughbred female 2, female reference). Finally results are compared with GSE55266 and two other control horses (SPA-H1-3 and SPA-H1-5) and relatively novel RAO CNVs were reported.
Project description:Studying the recovery dynamics in different diseases poses many difficulties, as patients often display high heterogeneity in their recovery courses. Moreover, most attempts to study disease dynamics focus on disease progression rather than disease recovery mechanisms. To model recovery dynamics, using severe COVID-19 as the example, we align heterogeneous recovery trajectories via a novel computational scheme applied to longitudinally sampled blood transcriptomes. We thus generate pseudotime trajectories, which we then link to cellular and molecular mechanisms based on cell deconvolution analysis and molecular pathway prediction, thus presenting a unique framework for studying recovery processes over time. Specifically, mature neutrophils displayed a gradual decrease during recovery, allowing superior useability for outcome prediction compared to currently used clinical markers. Further, we discovered a recovery-related regulatory change in gene programs resulting in immune rebalancing between interferon and NFkB activity and the restoration of cell homeostasis. We thus propose regulatory mechanisms governing COVID-19 recovery and suggest mature neutrophils and additional gene markers, as novel clinical biomarkers for disease outcome. Overall, we present a novel clinically relevant computational framework for modeling disease recovery, paving the way for future studies of the recovery dynamics in other diseases and tissues.
Project description:Small RNA isolated from synovial fluid of the metacarpophalangeal joints of horses. Horses either had minimal signs of osteoarthritis based on macroscopic and microscopic joint scoring or early (mild) osteoarthritis. Differential expression of small non-coding RNAs was undertaken.
Project description:Standardized muscular biopsies of the dorsal compartment of the gluteus medius muscle were performed in 7 horses suffering from equine polysaccharide storage myopathy (PSSM) and 6 sound Norman Cob horses . Gene expression analysis was performed using an equine oligonucleotide microarray which included 384 equine gene probes of the nuclear genome and all the mitochondrial genes. All the samples of PSSM muscles were hybridized against the reference control muscles. This reference was made by pooling together all the mRNA extracted after in vitro transcription from the 6 control muscles of the sound horses. Briefly, the hybridization protocol was adapted from Le Brigand et al. (2006). An open-access long oligonucleotide microarray resource for analysis of the human and mouse transcriptomes. Nucleic Acids Res. 2006 Jul 19;34(12).
Project description:Standardized muscular biopsies of the dorsal compartment of the gluteus medius muscle were performed in 7 horses suffering from equine polysaccharide storage myopathy (PSSM) and 6 sound Norman Cob horses . Gene expression analysis was performed using an equine oligonucleotide microarray which included 384 equine gene probes of the nuclear genome and all the mitochondrial genes.
Project description:Equine Papillomavirus Type 2 (EcPV2) appears to be a causal factor for the development of genital especially penile squamous cell carcinomas (SCC) and as such have an important clinical impact on horses. However, the pathomechanisms associated with this cancer transformation are not known, yet. To analyze the host’s and viral transcriptome in EcPV2 affected horses, tissue samples were collected from horses with EcPV2-positive genital lesions as well as from healthy EcPV2-negative horses. Expression levels of host and viral genes were evaluated by RNA-Seq.
Project description:Myofibrillar myopathy (MFM) in horses is a late onset disease that affects performance and athleticism. It is characterized by myofibrillar disarray and protein aggregation with no known cause. The objective of this study was to elucidate the molecular drivers of MFM in Warmblood (WB) horses by proteomic profiling (5 MFM WB, 4 non-MFM WB) of gluteal muscle. MFM horses used in this study had a chronic history of poor performance and exercise intolerance as well as accumulation of desmin aggregates in > 4 myofibers per muscle sample. The Equine Neuromuscular Diagnostic Laboratory database at Michigan State University was queried to identify WB horses with snap frozen gluteus medius biopsies available for analysis. Non-MFM control horses were defined as horses with no history of exercise intolerance and no evidence of desmin accumulation or other histopathology in muscle biopsies. Muscle biopsy samples were obtained at rest from horses that had not undertaken strenuous exercise in the preceding 48 hours.