Development of a TaqMan-based real-time PCR assay for rapid and specific detection of fowl aviadenovirus serotype 4.

In this study, we aimed to develop a TaqMan-based real-time PCR assay for the specific detection of FAdV-4. A pair of primers targeting the hexon gene and a TaqMan probe were designed. Using different copy numbers of plasmid DNA carrying the hexon gene as template, we showed the detection limit of this assay was 10(1) copies/reaction, which was 10 times higher than conventional PCR. The assay was highly specific for FAdV-4 and did not cross-detect 11 other serotypes of FAdVs, avian influenza virus, Newcastle disease virus, infectious bronchitis virus or subgroup J of the avian leukosis virus. The reproducibility of the assay was assessed by five independent reactions using different copy numbers of plasmid DNA (10(3) and 10(5)) as template, and the results showed 0.56-1.15% coefficient of variation for inter-assay variability. Furthermore, the assay was validated with 80 clinical samples. Real-time PCR showed that 76 out of 80 samples were positive for FAdV-4 (95.0% positivity) while 68 out of 80 were tested positive by conventional PCR (85.0% positivity). Our data suggest this real-time PCR assay could be an attractive tool for screening, confirmatory diagnosis and specific differentiation of FAdV-4 infection. PMID: 28437156 [PubMed - in process]
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research

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Should hepatitis C-infected kidneys be transplanted into uninfected recipients as standard practice? This editorial explores the issues.American Journal of Transplantation
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Transplantation Journal Article Source Type: news
Abstract Sex hormones are best known for their influences on reproduction, but they also have profound influences on the immune response. Examples of sex-specific differences include: (i) the relatively poor control of influenza virus infections in males compared to females, (ii) allergic asthma, an IgE-associated hypersensitivity reaction that is exacerbated in adolescent females compared to males, and (iii) systemic lupus erythematosus, a life-threatening autoimmune disease with a 9:1 female:male bias. Here we consider how estrogen and estrogen receptor α (ERα) may influence the immune response by mo...
Source: Cellular Immunology - Category: Allergy & Immunology Authors: Tags: Cell Immunol Source Type: research
ConclusionsGlecaprevir/pibrentasvir was highly efficacious and well tolerated in HCV treatment-na ïve patients with APRI ≤ 1 and no prior evidence of cirrhosis.Trial RegistrationClinicalTrials.gov number, NCT03212521.FundingAbbVie.Plain Language SummaryPlain language summary available for this article.
Source: Advances in Therapy - Category: Drugs & Pharmacology Source Type: research
In conclusion, it seems essential to implement effective educational and informative activities targeted to parents to reinforce positive attitudes toward vaccinations. PMID: 31705322 [PubMed - as supplied by publisher]
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
Plant variety and soil type influence Escherichia coli O104:H4 strain C227/11ϕcu adherence to and internalization into the roots of lettuce plants. Food Microbiol. 2020 Apr;86:103316 Authors: Eissenberger K, Drissner D, Walsh F, Weiss A, Schmidt H Abstract Human disease outbreaks caused by pathogenic Escherichia coli are increasingly associated with the consumption of contaminated fresh produce. Internalization of enteroaggregative/enterohemorrhagic E. coli (EAEC/EHEC) strains into plant tissues may present a serious threat to public health. In the current study, the ability of the fluorescing Shiga ...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
The objectives of the current study were to investigate: i) the effectiveness of 10 plant essential oil extracts on the viability of Salmonella spp. using disc diffusion ii) the antimicrobial activity of the most effective oils against Salmonella spp. in commercial or 10% w/v hydrated tahini (tahini-based product model) stored at 37, 25 and 10 °C for 28 d and iii) the effect of the addition of essential oil extracts on the sensory acceptability of tahini and hydrated tahini. Among the tested essential oils, thyme (TO) and cinnamon oil (CO) showed the highest antimicrobial activity against tested Salmonella spp. at ...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
We examined 252 rectal swabs obtained from 134 roe deer (Capreolus capreolus), 97 red deer (Cervus elaphus) and 21 fallow deer (Dama dama) in north-eastern Poland. The samples were enriched in modified buffered peptone water. Polymerase chain reaction (PCR) assays were conducted to determine the virulence profile of stx1, stx2 and eae or aggR genes, to identify the subtypes of stx1 and stx2 genes, and to perform O and H serotyping. E. coli O157:H7 isolates were detected in the rectal swabs collected from 1/134 roe deer (0.75%) and 4/97 red deer (4.1%), and they were not detected in fallow deer (Dama dama). The remaining E....
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
Publication date: Available online 10 November 2019Source: EpidemicsAuthor(s): Lee Worden, Sarah F. Ackley, Jennifer Zipprich, Kathleen Harriman, Wayne T.A. Enanoria, Rae Wannier, Travis C. PorcoAbstractA large measles outbreak in 2014–2015, linked to Disneyland theme parks, attracted international attention, and led to changes in California vaccine policy. We use dates of symptom onset and known epidemic links for California cases in this outbreak to estimate time-varying transmission in the outbreak, and to estimate generation membership of cases probabilistically. We find that transmission declined significantly d...
Source: Epidemics - Category: Epidemiology Source Type: research
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Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
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Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
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