Ontology highlight
ABSTRACT:
PROVIDER: PRJNA957270 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR24211900_1.fastq.gz | Fastqsanger.gz | |||
| SRR24211900_2.fastq.gz | Fastqsanger.gz | |||
| SRR24211901_1.fastq.gz | Fastqsanger.gz | |||
| SRR24211901_2.fastq.gz | Fastqsanger.gz | |||
| SRR24211902_1.fastq.gz | Fastqsanger.gz |
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Project description:We evaluated the intestinal responses of pigs under zinc restriction and under different zinc sources through RNA-seq of ileal samples. We identified changes in genes related to zinc transport, immune response, cell proliferation, DNA damage and stress resposne. Our findings demonstrate that swine intestine is responsive to zinc restriction and can be a model sentinel tissue for human zinc deficiency. Further research is needed to define the intestinal responses to organic and inorganic zinc sources.
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Project description:This manuscript is about our recent work on investigating the effective mechanism of Zinc oxide Nanoparticles on the malformation of craniofacial skeleton. Briefly, we focused on addressing the phenotype of destroyed cranial neural crest cells’ development where the effect of oxidant stress was explored when developing early embryos were exposed to Zinc oxide Nanoparticles during the embryogenesis.
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Project description:Development of immune competence in pigs is important for resilience, disease resistance, and performance later in life. Dietary interventions in early life can contribute to immune system development. Use of model dietary interventions, such as diets with a high concentration of zinc, can contribute to the understanding of the interactions between the diet, the intestinal microbiota and intestinal tissues. The aim of the present study was to evaluate the effects of provision of a diet with a high concentration of zinc (Zn, 2690 mg/kg), as model intervention, as compared to provision of a control diet with a regular Zn concentration (100 mg/kg) during a period of nine days during the post weaning period (d 14-23 post weaning (pw)), on the composition of the intestinal microbiota and gene expression in the intestinal mucosa on d 23 and 35 pw (12 d after the termination of the Zn intervention). Whole genome gene expression analysis of the jejunal and ileal mucosa revealed a small overall time-treatment interaction effect at d 23 pw in both intestinal tissues. In both jejunal and ileal mucosa various genes/probes were differentially up or down regulated between treatments. In intestinal tissue samples obtained on d 35 no differences in gene expression were observed. Probes of d 23 pw that were differently expressed and had an annotation were subsequently used as input for further functional analysis using DAVID and Gene Decks databases. The analysis did not result in the identification of gene sets that were differentially expressed between dietary treatments. However, it was shown that a number of upregulated genes in the jejunal mucosa on d 23 pw by the high zinc intervention are involved in pathways related to mineral absorption, immune signalling and cell energy metabolism (glycolysis and gluconeogenesis). A few down regulated genes by the Zn intervention are also involved in immune signalling pathways. It was concluded from the present study that provision of a diet with a high concentration of zinc as zinc oxide during a short period of time (9 days) to piglets in the post weaning period (d 14-23 pw) induces differences on the intestinal expression of genes in part related to the functioning of the local innate immune system. The high dietary zinc intervention can therefore be considered as a suitable model for studying relationships between dietary interventions and development of immune competence in post weaning piglets.
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Project description:Evaluation of intestinal response to zinc restriction and zinc sources in pigs
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Project description:The gut microbiota is closely associated with digestion, metabolism, immunity, and host health. The imbalance of the microbial community in livestock directly affects their well-being and, consequently, productivity. The composition and diversity of the gut microbiota are influenced not only by host genetics but also by environmental factors such as the microbial complexity of the rearing environment, feeds, and antibiotics. Here, we focus on the comparison of gut microbial communities in miniature pigs developed for xenotransplantation in specific pathogen-free (SPF) and conventional (non-SPF) facilities. To identify the disparities in gut microbial composition and functionality between these two environments, 16S RNA metagenome sequencing was conducted using fecal samples. The results revealed that the non-SPF pigs had higher gut microbiota diversity than the SPF pigs. The genera Streptococcus and Ruminococcus were more abundant in SPF pigs than in non-SPF pigs. Blautia, Bacteroides, and Roseburia were exclusively observed in SPF pigs, whereas Prevotella was exclusively found in non-SPF pigs. Carbohydrate and nucleotide metabolism, as well as environmental information processing, were predicted to be enriched in SPF pigs. In addition, energy and lipid metabolism, along with processes related to genetic information, cellular communication, and diseases, were predicted to be enriched in non-SPF pigs. This study makes an important contribution to elucidating the impact of environments harboring a variety of microorganisms, including pathogens, on the gut microbiota of miniature pigs. Furthermore, we sought to provide foundational data on the characteristics of the gut microbiota in genetically modified pigs, which serve as source animals for xenotransplantation.
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Project description:We studied the effect of different zinc sources on the intestinal microbiome in weaned pigs
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