Effects of tributyrin on gut microbiota of weaning piglets
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB40653 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR4666100.fastq.gz | Fastqsanger.gz | |||
| ERR4666110.fastq.gz | Fastqsanger.gz | |||
| ERR4666101.fastq.gz | Fastqsanger.gz | |||
| ERR4666111.fastq.gz | Fastqsanger.gz | |||
| ERR4666102.fastq.gz | Fastqsanger.gz |
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Project description:Early-weaning-induced stress causes diarrhea, thereby reduces growth performance of piglets. Gut bacterial dysbiosis emerges as a leading cause of post-weaning diarrhea. The present study was aimed to investigate the effect of capsulized fecal microbiota transportation (FMT) on gut bacterial community, immune response and gut barrier function of weaned piglets. Thirty-two were randomly divided into two groups fed with basal diet for 21 days. Recipient group was inoculated orally with capsulized fecal microbiota of health Tibetan pig daily morning during whole period of trial, while control group was given orally empty capsule. The results showed that the F/G ratio, diarrhea ratio, diarrhea index, and histological damage score of recipient piglets were significantly decreased. FMT treatment also significantly increased the colon length of piglets. Furthermore, the relative abundances of Firmicutes, Euryarchaeota, Tenericutes, Lactobacillus, Methanobrevibacter and Sarcina in colon of recipient piglets were increased, and the relative abundances of Campylobacter, Proteobacteria, and Melainabacteria were significantly decreased compared with control group.
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Project description:MicroRNAs (miRNAs) in serum are very stable and specific. Moreover, serum miRNAs are non-destructive and convenient. Studies have shown that the changes of serum miRNAs are closely relative to the pathological stresses and diseases. Our previous studies suggested that weaning stress induced the abnormal miRNA transcriptome in the intestine of piglets. In this project, we will further screen serum miRNA expression in piglets induced by weaning stress using miRNA microarray. Microarrays containing 422 porcine unique miRNA probes were employed to identify differences in the expression patterns of the miRNA between weaning piglets at 4 d after weaning and suckling piglets at the same days old. A total of 115 differentally expressed miRNAs were found,therein 63 miRNAs upregulated and 52 miRNA downregulated; 64 miRNAs are statistically significant but have low signals (signal < 500);122 miRNAs are not statistically significant (p > 0.01); the remaining 132 miRNAs have not detected signals.
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Project description:Transcriptional profiling of 25d old piglets comparing control untreated suckling jejunum with weaned piglets' jejunum. The goal was to gain new insight into the interaction between weaning and intestinal function.A keen interest is paid in deciphering expression changes of apoptosis or cell cycle control genes. The statistical analysis of gene ontology revealed that most of these altered genes are metabolic-related enzymes and regulators which may involved in the biological regulation, developmental process, and cellular process. Weaning also causes alterations in various immune response pathways. Results likely indicate that weaning induced cell cycle arrest, enhanced apoptosis, and inhibited cell proliferation. Two-condition experiment, suckling control piglets' jejunum vs. weaned piglets' jejunum. Biological replicates: 4 control replicates, 4 weaned replicates.
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Project description:Transcriptional profiling of 25d old piglets comparing control untreated suckling jejunum with weaned piglets' jejunum. The goal was to gain new insight into the interaction between weaning and intestinal function.A keen interest is paid in deciphering expression changes of apoptosis or cell cycle control genes. The statistical analysis of gene ontology revealed that most of these altered genes are metabolic-related enzymes and regulators which may involved in the biological regulation, developmental process, and cellular process. Weaning also causes alterations in various immune response pathways. Results likely indicate that weaning induced cell cycle arrest, enhanced apoptosis, and inhibited cell proliferation.
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Project description:MicroRNAs (miRNAs) play important roles in intestinal diseases; however, the role of miRNAs during weaning stress is unknown. In our study, six jejunal small RNA libraries constructed from weaning piglets at 1, 4 and 7 d after weaning (libraries W1, W4 and W7, respectively) and from suckling piglets on the same days as the weaning piglets (libraries S1, S4 and S7, respectively) were sequenced using Solexa high-throughput sequencing technology. Overall, 260 known swine miRNAs and 317 novel candidate miRNA precursors were detected in the six libraries. The results revealed that 16 differentially expressed miRNAs were found between W1 and S1; 98 differentially expressed miRNAs were found between W4 and S4 (ssc-mir-146b had the largest difference and ssc-mir-215 had the highest expression level); and 22 differentially expressed miRNAs were found between W7 and S7. Sequencing miRNA results were validated using RT-qPCR. Approximately 12,819 miRNA-mRNA interactions corresponding to 4,250 target genes were predicted. The biological analyses revealed that the differentially expressed miRNAs regulated small intestinal metabolism, stressful responses, cellular and immune functions and miRNA biosynthesis in piglets. Therefore, the small intestine miRNA transcriptome was significantly different between weaning and suckling piglets; the difference varied with the number of days after weaning. six small RNA libraries from weaning piglets at 1, 4 and 7 d after weaning and from suckling piglets on the same days as the weaning piglets, respectively. For every small RNA library construction, 4 biological total RNA samples isolated from each treatment and control were separately pooled with equal contribution.
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Project description:The transcriptome changes of the ileal mucosa in suckling piglets during early postnatal life were analysed to contribute to the knowledge of a pig’s gut development. In addition, the ileal transcriptome of suckling piglets was compared with that of age-matched weaned piglets (weaned at the age of 21 days) to elucidate the effect of weaning on the developing gut. DNA microarray was used to analyse the change of transcriptome profiles and biological pathways in porcine ileum that occurred during the developmental or the weaning process.
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