Abstract:
:Members of family Coronaviridae cause a variety of diseases in birds and mammals. Porcine hemagglutinating encephalomyelitis virus (PHEV), a lesser-researched coronavirus, can infect naive pigs of any age, but clinical disease is observed in pigs ≤4 weeks of age. No commercial PHEV vaccines are available, and neonatal protection from PHEV-associated disease is presumably dependent on lactogenic immunity. Although subclinical PHEV infections are thought to be common, PHEV ecology in commercial swine herds is unknown. To begin to address this gap in knowledge, a serum IgG antibody enzyme-linked immunosorbent assay (ELISA) based on the S1 protein was developed and evaluated on known-status samples and then used to estimate PHEV seroprevalence in U.S. sow herds. Assessment of the diagnostic performance of the PHEV S1 ELISA using serum samples (n = 924) collected from 7-week-old pigs (n = 84; 12 pigs per group) inoculated with PHEV, porcine epidemic diarrhea virus, transmissible gastroenteritis virus, porcine respiratory coronavirus, or porcine deltacoronavirus showed that a sample-to-positive cutoff value of ≥0.6 was both sensitive and specific, i.e., all PHEV-inoculated pigs were seropositive from days postinoculation 10 to 42, and no cross-reactivity was observed in samples from other groups. The PHEV S1 ELISA was then used to estimate PHEV seroprevalence in U.S. sow herds (19 states) using 2,756 serum samples from breeding females (>28 weeks old) on commercial farms (n = 104) with no history of PHEV-associated disease. The overall seroprevalence was 53.35% (confidence interval [CI], ±1.86%) and herd seroprevalence was 96.15% (CI, ±3.70%).IMPORTANCE There is a paucity of information concerning the ecology of porcine hemagglutinating encephalomyelitis virus (PHEV) in commercial swine herds. This study provided evidence that PHEV infection is endemic and highly prevalent in U.S. swine herds. These results raised questions for future studies regarding the impact of endemic PHEV on swine health and the mechanisms by which this virus circulates in endemically infected populations. Regardless, the availability of the validated PHEV S1 enzyme-linked immunosorbent assay (ELISA) provides the means for swine producers to detect and monitor PHEV infections, confirm prior exposure to the virus, and to evaluate the immune status of breeding herds.
journal_name
mSpherejournal_title
mSphereauthors
Mora-Díaz JC,Magtoto R,Houston E,Baum D,Carrillo-Ávila JA,Temeeyasen G,Zimmerman J,Piñeyro P,Giménez-Lirola Ldoi
10.1128/mSphere.00199-20subject
Has Abstractpub_date
2020-05-06 00:00:00issue
3issn
2379-5042pii
5/3/e00199-20journal_volume
5pub_type
杂志文章相关文献
mSphere文献大全abstract::Hypervirulent Klebsiella pneumoniae (hvKp) is an emerging pathogen of increasing concern due to its ability to cause serious organ and life-threatening infections in healthy individuals and its increasing acquisition of antimicrobial resistance determinants. Identification of hvKp is critical for patient care and epid...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00850-19
更新日期:2020-01-08 00:00:00
abstract::The gut microbiota has a key role in determining susceptibility to Clostridioides difficile infections (CDIs). However, much of the mechanistic work examining CDIs in mouse models uses animals obtained from a single source. We treated mice from 6 sources (2 University of Michigan colonies and 4 commercial vendors) wit...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00869-20
更新日期:2020-10-21 00:00:00
abstract::Nipah disease is listed as one of the WHO priority diseases that pose the greatest public health risk due to their epidemic potential. More than 200 experts from around the world convened in Singapore last year to mark the 20th anniversary of the first Nipah virus outbreaks in Malaysia and Singapore. Most of these exp...
journal_title:mSphere
pub_type: 杂志文章,评审
doi:10.1128/mSphere.00602-20
更新日期:2020-07-08 00:00:00
abstract::The genetic stability of every living organism depends on accurate DNA replication and repair systems. Here, we investigated the Aspergillus fumigatusMSH2 mismatch repair (MMR) gene MshA and how it impacts virulence and the evolution of azole resistance. We examined mshA gene variation in 62 environmental and clinical...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00416-19
更新日期:2019-08-07 00:00:00
abstract::The oral periodontopathic bacterium Fusobacterium nucleatum has been repeatedly associated with colorectal tumors. Molecular analysis has identified specific virulence factors that promote tumorigenesis in the colon. However, other oral community members, such as members of the Porphyromonas spp., are also found with ...
journal_title:mSphere
pub_type: 杂志文章,评审
doi:10.1128/mSphere.00102-16
更新日期:2016-05-11 00:00:00
abstract::Manipulation of the host cell is a crucial part of life for many intracellular organisms. We have recently come to appreciate the extent to which the intracellular pathogen Toxoplasma gondii reprograms its host cell, and this is illustrated by the marked upregulation of the central regulator c-Myc, an oncogene that co...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00402-20
更新日期:2020-06-24 00:00:00
abstract::The Paracoccidioides genus includes two species of thermally dimorphic fungi that cause paracoccidioidomycosis, a neglected health-threatening human systemic mycosis endemic to Latin America. To examine the genome evolution and the diversity of Paracoccidioides spp., we conducted whole-genome sequencing of 31 isolates...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00213-16
更新日期:2016-09-28 00:00:00
abstract::The chikungunya virus (CHIKV) is transmitted by female Aedes aegypti and Aedes albopictus mosquitoes, mostly present in (sub)tropical regions. No antivirals are available to treat CHIKV infections. If antiviral drugs are proven efficient to treat CHIKV-infected patients, it will be pivotal to determine whether drug-re...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00230-18
更新日期:2018-08-22 00:00:00
abstract::The stability of the Escherichia coli populations in the human gastrointestinal tract is not fully appreciated, and represents a significant knowledge gap regarding gastrointestinal community structure, as well as resistance to incoming pathogenic bacterial species and antibiotic treatment. The current study examines ...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00558-18
更新日期:2018-11-07 00:00:00
abstract::Vibrio cholerae is a noninvasive pathogen that colonizes the small intestine and produces cholera toxin, causing severe secretory diarrhea. Cholera results in long lasting immunity, and recent studies have improved our understanding of the antigenic repertoire of V. cholerae Interactions between the host, V. cholerae,...
journal_title:mSphere
pub_type: 杂志文章,评审
doi:10.1128/mSphere.00597-19
更新日期:2019-11-27 00:00:00
abstract::Michael D. L. Johnson is a molecular microbiologist observing the role of metals in bacterial biology. In this mSphere of Influence article, he discusses the impact that the paper "Decoupling of the minority PhD talent pool and assistant professor hiring in medical school basic science departments in the US" by Kennet...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00599-19
更新日期:2019-09-18 00:00:00
abstract::Opsonophagocytic assays are used to measure functional antibodies important in protection against pneumococcal capsular antigens. There have been efforts to standardize these methods, as the assays are commonly used to measure vaccine immunogenicity. We report here the results from three international laboratories usi...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00070-18
更新日期:2018-04-25 00:00:00
abstract::The newly emerged Candida species Candida auris is associated with an exponential rise in life-threatening invasive disease in health care facilities worldwide. Unlike other species, C. auris exhibits a high level of transmissibility, multidrug resistance, and persistence in the environment, yet little is known about ...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00760-20
更新日期:2020-08-05 00:00:00
abstract::Microsporidia are obligate intracellular parasites that infect a wide variety of host organisms, including humans. The sporoplasm is the initial stage of microsporidian infection and proliferation, but its morphological and molecular characteristics are poorly understood. In this study, the sporoplasm of Nosema bombyc...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00958-19
更新日期:2020-02-12 00:00:00
abstract::The etiology of bacterial meningitis in Turkey changed after the implementation of conjugated vaccines against Streptococcus pneumoniae and Haemophilus influenzae type b (Hib) in the Turkish National Immunization Program (NIP). Administration of Hib vaccine and PCV-7 (7-valent pneumococcal conjugate vaccine) was imple...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00060-20
更新日期:2020-03-25 00:00:00
abstract::Megan E. Spurgeon works in the field of viral oncology. In this mSphere of Influence article, she reflects on how the paper "Rescuing US biomedical research from its systemic flaws" by Bruce Alberts, Marc W. Kirschner, Shirley Tilghman, and Harold Varmus (Proc Natl Acad Sci U S A 111:5773-5777, 2014, https://doi.org/1...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00318-19
更新日期:2019-07-03 00:00:00
abstract::Père David's deer (Elaphurus davidianus or milu) is an endangered species, and the prevalence of antimicrobial resistance (AMR) such as mcr-1-positive strains among them has been unknown. In this study, we aimed to investigate the genomic characterizations of mcr-1-positive strains and provide insight into the dissemi...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.01221-20
更新日期:2020-12-23 00:00:00
abstract::Clinical isolates of Pseudomonas aeruginosa from patients with cystic fibrosis (CF) are known to differ from those associated with non-CF hosts by colony morphology, drug susceptibility patterns, and genomic hypermutability. Pseudomonas aeruginosa isolates from CF patients have long been recognized for their overall r...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00615-17
更新日期:2018-03-14 00:00:00
abstract::Control and eradication of foot-and-mouth disease (FMD) are impeded by the existence of a persistent, subclinical phase of infection in ruminants; animals with this status are referred to as carriers. However, the epidemiological significance of these FMD virus (FMDV) carriers is uncertain. In the current investigatio...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00365-18
更新日期:2018-09-12 00:00:00
abstract::The role of the gut microbiome in critical illness is being actively investigated, but the optimal sampling methods for sequencing studies of gut microbiota remain unknown. Stool samples are generally considered the reference standard but are not practical to obtain in the intensive care unit (ICU), and thus, rectal s...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00358-19
更新日期:2019-07-24 00:00:00
abstract::Antibiotic resistance has become a major public health concern as bacteria evolve to evade drugs, leading to recurring infections and a decrease in antibiotic efficacy. Systematic efforts have revealed mechanisms involved in resistance. Yet, in many cases, how these specific mechanisms accelerate or slow the evolution...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.01056-20
更新日期:2020-12-16 00:00:00
abstract::Botulinum neurotoxins (BoNTs), produced by neurotoxigenic clostridial species, are the cause of the severe disease botulism in humans and animals. Early research on BoNTs has led to their classification into seven serotypes (serotypes A to G) based upon the selective neutralization of their toxicity in mice by homolog...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00100-15
更新日期:2016-02-24 00:00:00
abstract::This study examines the pharmacodynamics of antimicrobials that are used to treat Salmonella with each other and with key components of the innate immune system. Antimicrobial synergy was assessed using time-kill and checkerboard assays. Antimicrobial interactions with innate immunity were studied by employing catheli...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00410-17
更新日期:2017-12-06 00:00:00
abstract::Methane-oxidizing microorganisms perform an important role in reducing emissions of the greenhouse gas methane to the atmosphere. To date, known bacterial methanotrophs belong to the Proteobacteria, Verrucomicrobia, and NC10 phyla. Within the Proteobacteria phylum, they can be divided into type Ia, type Ib, and type I...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00631-18
更新日期:2019-06-05 00:00:00
abstract::CRISPR (clustered regularly interspaced short palindromic repeat)-Cas9 is a novel genome-editing system that has been successfully established in Aspergillus fumigatus. However, the current state of the technology relies heavily on DNA-based expression cassettes for delivering Cas9 and the guide RNA (gRNA) to the cell...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00446-17
更新日期:2017-11-22 00:00:00
abstract::Pascale Guiton works in the field of parasitology at a primarily undergraduate institution. In this mSphere of Influence article, she reflects on her difficulties as a faculty of color to discuss socioscientific issues in her classrooms. T. D. Sadler's article "Situating socio-scientific issues in classrooms as a mean...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00010-21
更新日期:2021-01-20 00:00:00
abstract::Candida auris, an emerging multidrug-resistant yeast, has recently been associated with outbreaks of invasive infections in health care facilities worldwide. Its success as a nosocomial pathogen lies in its capability to sustain for prolonged periods in the intensive care unit (ICU), adeptly colonize skin, and spread ...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00972-19
更新日期:2020-01-22 00:00:00
abstract::Virulence is a microbial property that is realized only in susceptible hosts. There is no absolute measurement for virulence, and consequently it is always measured relative to a standard, usually another microbe or host. This article introduces the concept of pathogenic potential, which provides a new approach to mea...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00015-17
更新日期:2017-02-22 00:00:00
abstract::The genomes of Leishmania and trypanosomes encode six paralogs of the eIF4E cap-binding protein, known in other eukaryotes to anchor the translation initiation complex. In line with the heteroxenous nature of these parasites, the different LeishIF4E paralogs vary in their biophysical features and their biological beha...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00450-19
更新日期:2019-09-04 00:00:00
abstract::The cell-to-cell heterogeneity in a bacterial population provides a rich response to environmental changes and robust survival of an isogenic population. Especially, the rare, extreme phenotypes can be important for survival under transient lethal conditions. We analyze the probability of having an extremely high or l...
journal_title:mSphere
pub_type: 杂志文章
doi:10.1128/mSphere.00575-18
更新日期:2019-01-30 00:00:00