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Title: Microbiome associations in pigs with the best and worst clinical outcomes following co-infection with porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus type 2 (PCV2)

Journal Article · · Veterinary Microbiology
 [1];  [2];  [2];  [1];  [2];  [1]
  1. Kansas State Univ., Manhattan, KS (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Co-infections involving porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus type 2 (PCV2) are common and contribute to a range of polymicrobial disease syndromes in swine and on a world-wide basis. Both viruses compromise host defenses, resulting in increased susceptibility to infections by primary and secondary pathogens that can affect growth performance as well as increased morbidity and mortality. An experimental population of 95 pigs was co-infected with PRRSV and PCV2. At 70 days post-infection (dpi), 20 representative pigs were selected as having the best or worst clinical outcome based on average daily gain (ADG) and the presence of clinical disease. Moreover, the worst clinical outcome pigs had prolonged and greater levels of viremia as measured by qPCR. Serum, lung and fecal samples collected at 70 dpi were analyzed using a comprehensive DNA microarray technology, the Lawrence Livermore Microbial Detection Array, to detect over 8000 microbes. Bacterial species, such as Bacillus cereus, were detected at a higher rate in the serum of worst performing pigs. At the level of the fecal microbiome, the overall microbial diversity was lower in the worst clinical outcome group. The results reinforce the importance of pathogen load in determining clinical outcome and suggest an important role of microbial diversity as a contributing factor in disease.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; 14ERD081
OSTI ID:
1258531
Alternate ID(s):
OSTI ID: 1348263
Report Number(s):
LLNL-JRNL-679863
Journal Information:
Veterinary Microbiology, Vol. 188, Issue C; ISSN 0378-1135
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

References (32)

Enterotypes of the human gut microbiome journal April 2011
Profiling the gastrointestinal microbiota in response to Salmonella: Low versus high Salmonella shedding in the natural porcine host journal June 2013
The effect of selected factors on the survival of Bacillus cereus in the human gastrointestinal tract journal May 2015
Evidence for a major QTL associated with host response to Porcine Reproductive and Respiratory Syndrome Virus challenge1 journal June 2012
Pathogenesis of porcine reproductive and respiratory syndrome virus journal June 2012
Molecular Characterization of Porcine Reproductive and Respiratory Syndrome Virus, a Member of the Arterivirus Group journal March 1993
Characterization of the Fecal Microbiota of Pigs before and after Inoculation with “Brachyspira hampsonii” journal August 2014
The Microbiome and the Lung journal August 2014
Microbiota in Allergy and Asthma and the Emerging Relationship with the Gut Microbiome journal May 2015
A microbial detection array (MDA) for viral and bacterial detection journal January 2010
Immunopathogenesis of porcine reproductive and respiratory syndrome in the respiratory tract of pigs journal February 2013
Development of a real-time PCR method for Firmicutes and Bacteroidetes in faeces and its application to quantify intestinal population of obese and lean pigs journal November 2008
Temporal analysis of the effect of extruded flaxseed on the swine gut microbiota journal October 2014
Application of a pathogen microarray for the analysis of viruses and bacteria in clinical diagnostic samples from pigs journal April 2015
Effects on weight gain and gut microbiota in rats given bacterial supplements and a high-energy-dense diet from fetal life through to 6 months of age journal March 2011
Longitudinal investigation of the age-related bacterial diversity in the feces of commercial pigs journal November 2011
Comparative fecal metagenomics unveils unique functional capacity of the swine gut journal January 2011
In-feed antibiotic effects on the swine intestinal microbiome journal January 2012
Vaccination with a Porcine Reproductive and Respiratory Syndrome (PRRS) Modified Live Virus Vaccine Followed by Challenge with PRRS Virus and Porcine Circovirus Type 2 (PCV2) Protects against PRRS but Enhances PCV2 Replication and Pathogenesis Compared to Results for Nonvaccinated Cochallenged Controls journal October 2015
Concurrent infections are important for expression of porcine circovirus associated disease journal March 2012
Current State of Knowledge on Porcine Circovirus Type 2-Associated Lesions journal June 2012
Porcine Circovirus Type 2 (PCV-2) Coinfections in US Field Cases of Postweaning Multisystemic Wasting Syndrome (PMWS) journal January 2002
Exposure to environmental stressors result in increased viral load and further reduction of production parameters in pigs experimentally infected with PCV2b journal June 2015
Clinical and pathological observations on pigs with postweaning multisystemic wasting syndrome journal September 2001
Variation in resistance to the Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) in Pietrain and Miniature pigs journal April 2010
The Microbial Detection Array for Detection of Emerging Viruses in Clinical Samples - A Useful Panmicrobial Diagnostic Tool journal June 2014
Gut microbiota composition is associated with body weight, weight gain and biochemical parameters in pregnant women journal March 2010
Modulation of Systemic Immune Responses through Commensal Gastrointestinal Microbiota journal January 2013
Disease tolerance mediated by microbiome E. coli involves inflammasome and IGF-1 signaling journal October 2015
Porcine circovirus type 2 (PCV2) infections: Clinical signs, pathology and laboratory diagnosis journal March 2012
Faecalibacterium prausnitzii is an anti-inflammatory commensal bacterium identified by gut microbiota analysis of Crohn disease patients journal October 2008
Antibody responses following vaccination versus infection in a porcine circovirus-type 2 (PCV2) disease model show distinct differences in virus neutralization and epitope recognition journal June 2012

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Investigating the relationship between vaginal microbiota and host genetics and their impact on immune response and farrowing traits in commercial gilts journal August 2019
Insights into the epidemic characteristics and evolutionary history of the novel porcine circovirus type 3 in southern China journal November 2017
Prevalence of porcine circovirus type 3 in pigs in the southeastern Chinese province of Zhejiang journal July 2019
Coinfections and their molecular consequences in the porcine respiratory tract journal June 2020
Axiom Microbiome Array, the next generation microarray for high-throughput pathogen and microbiome analysis journal February 2019
Co-Infection of Swine with Porcine Circovirus Type 2 and Other Swine Viruses journal February 2019
Coinfections and their molecular consequences in the porcine respiratory tract. text January 2020
Characterisation of Bergeyella spp. isolated from the nasal cavities of piglets journal April 2018
Fecal Microbiota Transplantation Is Associated With Reduced Morbidity and Mortality in Porcine Circovirus Associated Disease journal July 2018
Change of Gut Microbiota in PRRSV-Resistant Pigs and PRRSV-Susceptible Pigs from Tongcheng Pigs and Large White Pigs Crossed Population upon PRRSV Infection journal June 2022