Dataset Information

Enteric virome of Ethiopian children participating in a clean water intervention trial.

ABSTRACT: BACKGROUND:The enteric viruses shed by different populations can be influenced by multiple factors including access to clean drinking water. We describe here the eukaryotic viral genomes in the feces of Ethiopian children participating in a clean water intervention trial. METHODOLOGY/PRINCIPAL FINDINGS:Fecal samples from 269 children with a mean age of 2.7 years were collected from 14 villages in the Amhara region of Ethiopia, half of which received a new hand-dug water well. Feces from these villages were then analyzed in 29 sample pools using viral metagenomics. A total of 127 different viruses belonging to 3 RNA and 3 DNA viral families were detected. Picornaviridae family sequence reads were the most commonly found, originating from 14 enterovirus and 6 parechovirus genotypes plus multiple members of four other picornavirus genera (cosaviruses, saliviruses, kobuviruses, and hepatoviruses). Picornaviruses with nearly identical capsid VP1 were detected in different pools reflecting recent spread of these viral strains. Next in read frequencies and positive pools were sequences from the Caliciviridae family including noroviruses GI and GII and sapoviruses. DNA viruses from multiple genera of the Parvoviridae family were detected (bocaviruses 1-4, bufavirus 3, and dependoparvoviruses), together with four species of adenoviruses and common anelloviruses shedding. RNA in the order Picornavirales and CRESS-DNA viral genomes, possibly originating from intestinal parasites or dietary sources, were also characterized. No significant difference was observed between the number of mammalian viruses shed from children from villages with and without a new water well. CONCLUSIONS:We describe an approach to estimate the efficacy of potentially virus transmission-reducing interventions and the first complete (DNA and RNA viruses) description of the enteric viromes of East African children. A wide diversity of human enteric viruses was found in both intervention and control groups. Mammalian enteric virome diversity was not reduced in children from villages with a new water well. This population-based sampling also provides a baseline of the enteric viruses present in Northern Ethiopia against which to compare future viromes.

SUBMITTER: Altan E

PROVIDER: S-EPMC6095524 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Enteric virome of Ethiopian children participating in a clean water intervention trial.

Altan Eda E Aiemjoy Kristen K Phan Tung G TG Deng Xutao X Aragie Solomon S Tadesse Zerihun Z Callahan Kelly E KE Keenan Jeremy J Delwart Eric E

PloS one 20180816 8

<h4>Background</h4>The enteric viruses shed by different populations can be influenced by multiple factors including access to clean drinking water. We describe here the eukaryotic viral genomes in the feces of Ethiopian children participating in a clean water intervention trial.<h4>Methodology/principal findings</h4>Fecal samples from 269 children with a mean age of 2.7 years were collected from 14 villages in the Amhara region of Ethiopia, half of which received a new hand-dug water well. Fece ...[more]

PMID: 30114205

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Project description:BackgroundPaediatric cancer patients often experience anxiety and depression. Evidence suggests that cognitive-behavioural interventions may help reduce anxiety and depression in children undergoing cancer treatment. However, only a few studies evaluated its impact on the psychological well-being and quality of life of paediatric cancer patients globally. In Ethiopia, there has been no published study to date. Thus, this trial aims to evaluate the efficacy of a culturally tailored cognitive-behavioural intervention for Ethiopian children with haematological malignancies receiving chemotherapy.MethodsA single-blinded, parallel-group, two-arm, repeated measure randomised controlled trial will be conducted. Eighty children aged 8 - 18 years with haematological malignancy receiving chemotherapy will be recruited and randomly assigned to experimental or control groups. The experimental group will receive five sessions of introducing cognitive-behavioural intervention, identifying and modifying maladaptive thoughts and behaviour, behavioural activation, practising deep breathing exercises, reassessing goals or treatment plans, and encouraging participants to maintain changes. Each session will be conducted face-to-face for 30-35 min a week. The control group will receive usual care. The outcomes will be measured at baseline, post-intervention, and one month after the intervention using the Revised Child Anxiety and Depression Scale and Paediatric Quality of Life Inventory Generic Core Score 4.0.DiscussionThe findings of this study will provide evidence to support the integration of culturally effective cognitive-behavioural intervention strategies into paediatric oncology practice and thus, add new knowledge to the literature and help improve the care of children with haematological malignancies receiving chemotherapy. If the cognitive-behavioural intervention is shown to be effective and culturally acceptable, it will provide evidence to include the intervention as a standard of care in paediatric haematology/oncology.Trial registrationClinicalTrials.gov NCT05270655. Registered on March 8, 2022.

Project description:Diarrhea caused by early-weaning-induced stress can increase mortality rates and reduce growth performance of piglets, seriously harming the livestock industry. To date, studies on the gut microbiome of early-weaned piglets have focused almost exclusively on bacteria, while studies on their gut virome are extremely lacking. Here, we used metagenomic and metatranscriptomic sequencing combined with bioinformatic analysis techniques to preliminarily characterize the intestinal virome of early-weaned piglets at different biological classification levels. The alpha diversity of enteroviruses was generally elevated in early-weaned piglets with diarrhea, compared to healthy piglets, whereas the two groups of piglets showed no significant difference in beta diversity. In addition, the species compositions of the gut virome were similar between healthy piglets and piglets with diarrhea, while their respective dominant species were somewhat different. We also identified 58 differential DNA viruses and 16 differential RNA viruses between the two groups of piglets at all biological taxonomic levels. Of these, 1 (family Dhakavirus) and 6 (phylum Artverviricota, class Revtraviricetes, order Ortervirales, family Retroviridae, genus Gammaretrovirus, and species Kirsten murine sarcoma virus) specific viruses disappeared from the intestines of healthy piglets and piglets with diarrhea, respectively. Moreover, we found that some DNA and RNA viruses formed strong correlations among themselves or between them. IMPORTANCE This study systematically reveals the biological diversity, structure, and composition of intestinal DNA and RNA virus profiles in early-weaned piglets. Furthermore, characteristics of differences in gut viromes between early-weaned healthy piglets and piglets with diarrhea were also elucidated. Importantly, some potential biomarkers for early-weaned piglets with diarrhea were identified. These findings fill a gap for the early-weaned piglet gut virome and lay the foundation for the development of strategies to target enteroviruses for the prevention and treatment of early-weaning-induced piglet diarrhea.

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Enteric virome of Ethiopian children participating in a clean water intervention trial.

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Enteric virome of Ethiopian children participating in a clean water intervention trial.

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