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Epigenomic and proteomic changes in bovine viral diarrhea virus persistently infected fetal spleens: repercussions for the developing immune system, bone, brain, and heart.

ABSTRACT: Epigenomic and proteomic changes in bovine viral diarrhea virus persistently infected fetal spleens: repercussions for the developing immune system, bone, brain, and heart.

PROVIDER: PRJNA780928 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16959509_1.fastq.gz	Fastqsanger.gz
	SRR16959509_2.fastq.gz	Fastqsanger.gz
	SRR16959510_1.fastq.gz	Fastqsanger.gz
	SRR16959510_2.fastq.gz	Fastqsanger.gz
	SRR16959511_1.fastq.gz	Fastqsanger.gz

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Epigenomic and proteomic changes in bovine viral diarrhea virus persistently infected fetal spleens: repercussions for the developing immune system, bone, brain, and heart.

Project description:Reduced representation bisulfite sequencing of BVDV PI and controls fetal spleens, collected on day 245 of gestation (maternal inoculation at day 75 of gestation)

2022-03-01 | GSE188977 | GEO

Epigenomic and Proteomic Changes in Fetal Spleens Persistently Infected with Bovine Viral Diarrhea Virus: Repercussions for the Developing Immune System, Bone, Brain, and Heart.

Project description:Bovine viral diarrhea virus (BVDV) infection during early gestation results in persistently infected (PI) immunotolerant calves that are the primary reservoirs of the virus. Pathologies observed in PI cattle include congenital defects of the brain, heart, and bone as well as marked functional defects in their immune system. It was hypothesized that fetal BVDV infection alters T cell activation and signaling genes by epigenetic mechanisms. To test this, PI and control fetal splenic tissues were collected on day 245 of gestation, 170 days post maternal infection. DNA was isolated for reduced representation bisulfite sequencing, protein was isolated for proteomics, both were analyzed with appropriate bioinformatic methods. Within set parameters, 1951 hypermethylated and 691 hypomethylated DNA regions were identified in PI compared to control fetuses. Pathways associated with immune system, neural, cardiac, and bone development were associated with heavily methylated DNA. The proteomic analysis revealed 12 differentially expressed proteins in PI vs. control animals. Upregulated proteins were associated with protein processing, whereas downregulated proteins were associated with lymphocyte migration and development in PI compared to control fetal spleens. The epigenetic changes in DNA may explain the immune dysfunctions, abnormal bone formation, and brain and heart defects observed in PI animals.

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Attenuated lymphocyte activation leads to the development of immunotolerance on bovine fetuses persistently infected with BVDV

Project description:Fetal spleens were collected at days 82 and 97 of gestation following maternal infection with BVDV on day 75 of gestation. A microarray was performed on RNA -> cDNA of the splenic samples. Treatment groups consist of Controls (non-infected) and PI (persistently infected).

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plasma proteomic profiling reveals Dampness Heat Diarrhea mechanisms in calves

Project description:Dampness heat diarrhea (DHD) is the leading cause in calves with diarrhea in traditional Chinese medicine (TCM). However, the methods for detecting DHD diarrhea remain subjective or infective. To address this issue, the calves with dampness heat diarrhea were collected and the plasma proteomic was analyzed using data-independent acquisition (DIA)-mass spectrometry- based proteomics. The analysis revealed a total of 52 differentially expressed proteins that were uniquely altered in the DHD calves’ plasma, compared to the control. Bioinformatics analysis showed that these altered proteins were involved in a wide range of biological processes, such as intestinal immune network for IgA production, purine metabolism and PI3K signaling pathway, which implying their potential roles in DHD.

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Project description:Diarrhea remains a major cause of death in children. Current diagnostic methods largely rely on stool culture and suffer from low sensitivity and inadequate specificity, often leading to inappropriate treatment. The objective of the present study was to use RNA sequencing (RNAseq) analysis to determine blood transcriptional profiles specific for several common pathogenic bacteria and viruses that cause diarrhea in children. We collected whole blood samples from children in Mexico having diarrhea associated with a single pathogen and without systemic complications. Our RNAseq data suggested that the blood signatures can differentiate children with diarrhea from healthy children either with or without bacterial colonization. Moreover, we detected different expression profiles from bacterial and viral infection, demonstrating for the first time the use of RNAseq to identify the etiology of infectious diarrhea. Whole blood from 207 children including children with diarrhea caused by rotavirus (n=55), E.coli (n=55), Salmonella (n=36), Shigella (n=37) and control children (n=24).

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Project description:Sixty crossbred piglets (Duroc*Landrace*Yorkshire) weaned at the age of 21 days were maintained for one week and had free access to feed and water. During this week, all the piglets were scored for the severity of diarrhea. Diarrhea index was scored as follows: 1= hard feces; 2= no scours, feces of normal consistency; 3= mild scours, soft, partially formed feces; 4= moderate scours, loose, semi-liquid feces; 5= watery feces; as previously did Those piglets with a score of 4 or 5 for three continuous days were designated as diarrhea piglets, while those piglets with a score of 1 or 2 for three continuous days were designated as normal piglets..

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Capsulized fecal microbiota transportation ameliorates post-weaning diarrhea through modulating the gut microbiota in piglets

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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