Project description:In this study, we uncover the molecular mechanism that PPARD transactive-deficient pigs have large-eared feature. Evidently from this work, PPARD plays a vital role on inhibiting cartilage growth by regulating the transcription of critical genes for chondrogenesis in ligand dependent manner; the activation of sPPARD speeds up apoptosis in CSPCs, terminal differentiation of chondroblasts and matrix degradation in auricular cartilage. The transactive-deficient PPARD has not the capability to slow down cartilage growth and consequently causes that ear size of carried animals increases at a high growth rate. As the role of PPARD in cartilage is similar in pigs, mice and humans, and since cartilage development is well-conserved in animals, our data helps to better understanding of cartilage development and treatment of cartilage-related diseases.
Project description:In this study, we uncover the molecular mechanism that PPARD transactive-deficient pigs have large-eared feature. Evidently from this work, PPARD plays a vital role on inhibiting cartilage growth by regulating the transcription of critical genes for chondrogenesis in ligand dependent manner; the activation of sPPARD speeds up apoptosis in CSPCs, terminal differentiation of chondroblasts and matrix degradation in auricular cartilage. The transactive-deficient PPARD has not the capability to slow down cartilage growth and consequently causes that ear size of carried animals increases at a high growth rate. As the role of PPARD in cartilage is similar in pigs, mice and humans, and since cartilage development is well-conserved in animals, our data helps to better understanding of cartilage development and treatment of cartilage-related diseases.
Project description:Regulatory Mechanisms of Atrial Remodeling of Mitral Regurgitation Pigs This study enrolled 6 pigs (age: 18 months) and divided into three groups: mitral regurgitation pigs (MR) (n = 2; 2 males sacrificed 12 months after surgery), MR pigs treated with valsartan (MRV) (n = 2; 2 males age-matched to MR sacrificed 12 months after surgery), and normal control pigs (NC) (n = 2; 2 males age-matched to MR pigs). Valsartan (3.43 mg/kg/day), a type I angiotensin II receptor blocker, was administered from one week before surgery and then daily after surgery in the MRV group. We sought to systemically elucidate critical differences in the alteration of RNA expression pattern between the atrial myocardium of pigs with and without MR, and between the atrial myocardium of MR pigs with and without valsartan using high-density oligonucleotide microarrays and functional network enrichment analysis.
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig
Project description:BACKGROUND:In animal breeding, identification of causative genetic variants is of major importance and high economical value. Usually, the number of candidate variants exceeds the number of variants that can be validated. One way of prioritizing probable candidates is by evaluating their potential to have a deleterious effect, e.g. by predicting their consequence. Due to experimental difficulties to evaluate variants that do not cause an amino-acid substitution, other prioritization methods are needed. For human genomes, the prediction of deleterious genomic variants has taken a step forward with the introduction of the combined annotation dependent depletion (CADD) method. In theory, this approach can be applied to any species. Here, we present pCADD (p for pig), a model to score single nucleotide variants (SNVs) in pig genomes. RESULTS:To evaluate whether pCADD captures sites with biological meaning, we used transcripts from miRNAs and introns, sequences from genes that are specific for a particular tissue, and the different sites of codons, to test how well pCADD scores differentiate between functional and non-functional elements. Furthermore, we conducted an assessment of examples of non-coding and coding SNVs, which are causal for changes in phenotypes. Our results show that pCADD scores discriminate between functional and non-functional sequences and prioritize functional SNVs, and that pCADD is able to score the different positions in a codon relative to their redundancy. Taken together, these results indicate that based on pCADD scores, regions with biological relevance can be identified and distinguished according to their rate of adaptation. CONCLUSIONS:We present the ability of pCADD to prioritize SNVs in the pig genome with respect to their putative deleteriousness, in accordance to the biological significance of the region in which they are located. We created scores for all possible SNVs, coding and non-coding, for all autosomes and the X chromosome of the pig reference sequence Sscrofa11.1, proposing a toolbox to prioritize variants and evaluate sequences to highlight new sites of interest to explain biological functions that are relevant to animal breeding.
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig 47 samples
Project description:Fecal samples (N = 10) from 6- to 8-week-old wild boar piglets (Sus scrofa), collected from an animal park in Hungary in April 2011, were analyzed using viral metagenomics and complete genome sequencing. Kobuvirus (genus Kobuvirus, family Picornaviridae) was detected in all (100 %) specimens, with the closest nucleotide (89 %) and amino acid (94 %) sequence identity of the strain wild boar/WB1-HUN/2011/HUN (JX177612) to the prototype porcine kobuvirus S-1-HUN (EU787450). This study suggests that genetically highly similar (practically the same geno-/serotype) porcine kobuvirus circulate in wild boars, the wildlife counterparts of domestic pigs. Wild boars could be an important host and reservoir for kobuvirus.