Project description:To clarify the effect of intravenous senktide administration on the quality and developmental stage of collected embryo from superovulated cows, mRNA expression profiles of the embryo were investigated. Hierarchical cluster analysis with the expression levels of all genes was divided these cows into three clusters. First cluster was composed of control cows, second cluster contained senktide (30 nmol/min, 2h) treated cows and third cluster consisted of senktide (300 nmol/min, 2h) treated cows.
Project description:To clarify the effect of intrauterine methylglyoxal (MGO) administration on the endometrium, mRNA expression profiles of bovine endometrium were investigated. Hierarchical cluster analysis with the expression levels of all genes was divided these cows into two clusters. First cluster was composed of control cows, second cluster contained MGO (5 mM) treated cows.
Project description:In animal production the use of probiotics supplements to promote animal health is increasing. The objective of this study was to assess the impact of probiotics administration on global gene expression in dairy cows. Lactating Holstein Friesian cows (n=10) from the North Carolina Agricultural and Technical State University dairy herd were used for the study. Treatment was a 10 ml oral drench of FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) at the recommended dose in water or water only (control). This treatment was carried out for 60 days. Whole blood was collected at the beginning (Day 0) and end of the study (Day 60) for microarray analysis. We employed microarray expression profiling as a discovery platform to identify genes with potential association with probiotics supplementation in cows. Gene expression analysis identified 10,859 differentially expressed genes- 1168 upregulated genes and 9691 downregulated gene. Results for pathway analysis showed significant pathways associated with innate immunity such as the Toll-like receptor (TLR) pathway, inflammation response and Wingless (Wnt) signaling pathway. Real-time PCR was used to validate gene expression of members of the TLR and Wnt signaling pathway. Treatment affected the expression of innate and adaptive immune response, cytokine and Wnt pathway genes. Daily administration of probiotics to dairy cows impacts global gene expression and particularly the expression of innate immune genes in dairy cows. Ten animals were enrolled in the study and an initial blood sample was collected (Day 0). Animals (n=5) received either daily supplementations with FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) or water daily (control animals) for 60 days. Blood samples were collected at the end of the study from probiotics-treated and control animals for RNA extraction and microarray analysis. In vitro effect of lipopolysaccharide (LPS) endotoxin treatment was evaluated using blood samples collected from probiotics-treated animals (Day 60 samples) to serve as positive control array. A pooled sample was generated by taking equal concentration of RNA from experimental animals in each group. Pooled samples from each group was hybridized on Agilent one color bovine v2 bovine (v2) 4x44KÂ array slides.
Project description:We conducted an RNA-sequencing on the placentomes that were collected from 4 and 3 cows with and without retained placenta, respectively. Placentomes were collected from the cows within 30 minutes after parturition and samples were taken from the feto-maternal junction sites of the placentomes. These samples were used for RNA-sequencing and the results showed 240 genes that were differentially expressed between the two groups. These genes could be candidate genes that are involved in the development of placental retention in cattle.
Project description:In animal production, the use of probiotics supplements to promote animal health is increasing. The objective of this study was to assess the impact of probiotics administration on global gene expression in dairy cows. Lactating Holstein-Friesian cows (n=10) from the North Carolina Agricultural and Technical State University dairy herd were used for the study. Treatment was a 50 ml oral drench of FASTtrak microbial pack (Probiotics) (Conklin Company, Kansas City, MO) at the recommended dose in sterile endotoxin-free water or sterile endotoxin-free water only (control). This treatment was carried out for 60 days. Whole blood was collected at the beginning (Day 0) and end of the study (Day 60) for microarray analysis. We employed microarray expression profiling as a discovery platform to identify genes with potential association with probiotics supplementation in cows. Gene expression analysis identified 10,859 differentially expressed genes- 1168 upregulated genes and 9691 downregulated gene. Results for pathway analysis showed significant pathways associated with innate immunity such as the Toll-like receptor (TLR) pathway, inflammation response and Wingless (Wnt) signaling pathway. Real-time PCR was used to validate the expression of the Wnt signaling pathway and immune response genes. Probiotic treatment impacted global gene expression, and particularly, the expression of immune response and Wnt signaling pathway genes. Oral administration of probiotics to dairy cows impacts global gene expression and particularly the expression of innate immune genes in dairy cows.
Project description:In this study we sequenced RNA of granulosa collected from Holstein cows at oocyte aspiration prior to IVP, to identify candidate genes and biological mechanisms for favourable IVP-related traits in donor cows.
Project description:To explore potential functional genes related to milk production traits in cow, we performed total RNA-seq using liver biospy collected from 77 Holstein Friesian cows at postpartum 2 weeks.
Project description:Comparative transcriptomic analyses were performed at both the immature and at the mature stages between oocytes collected from cows with a high or low embryo development potential (HOP, LOP) as characterized by in vitro fertilization and embryo development.