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Antibiotic susceptibility profiles of Mycoplasma synoviae strains originating from Central and Eastern Europe.

ABSTRACT: Mycoplasma synoviae causes infectious synovitis and respiratory diseases in chickens and turkeys and may lead to egg shell apex abnormalities in chickens; hence possesses high economic impact on the poultry industry. Control of the disease consists of eradication, vaccination or medication. The aim of the present study was to determine the in vitro susceptibility to 14 different antibiotics and an antibiotic combination of M. synoviae strains originating from Hungary and other countries of Central and Eastern Europe.Minimal inhibitory concentration (MIC) values of a total of 41 M. synoviae strains were determined by the microbroth dilution method. The strains were collected between 2002 and 2016 and originated from Hungary (n?=?26), Austria (n?=?3), the Czech Republic (n?=?3), Slovenia (n?=?3), Ukraine (n?=?3), Russia (n?=?2) and Serbia (n?=?1). Tetracyclines (with MIC50 values of 0.078 ?g/ml, ?0.25 ?g/ml and 0.5 ?g/ml for doxycycline, oxytetracycline and chlortetracycline, respectively), macrolides (with MIC50 values of ?0.25 ?g/ml for tylvalosin, tylosin and tilmicosin), pleuromutilins (with MIC50 values of 0.078 ?g/ml and ?0.039 ?g/ml for tiamulin and valnemulin) and the combination of lincomycin and spectinomycin (MIC50 1 ?g/ml (0.333/0.667 ?g/ml)) were found to be the most effective antibiotic agents against M. synoviae in vitro. High MIC values were detected in numerous strains for fluoroquinolones (with MIC50 values of 1.25 ?g/ml and 2.5 ?g/ml for enrofloxacin and difloxacin), neomycin (MIC50 32 ?g/ml), spectinomycin (MIC50 2 ?g/ml), lincomycin (MIC50 0.5 ?g/ml) and florfenicol (MIC50 4 ?g/ml). Nevertheless, strains with elevated MIC values were detected for most of the applied antibiotics.In the medical control of M. synoviae infections the preliminary in vitro antibiotic susceptibility testing and the careful evaluation of the data are crucial. Based on the in vitro examinations doxycycline, oxytetracycline, tylvalosin, tylosin and pleuromutilins could be recommended for the therapy of M. synoviae infections in the region.

SUBMITTER: Kreizinger Z

PROVIDER: S-EPMC5693497 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Antibiotic susceptibility profiles of Mycoplasma synoviae strains originating from Central and Eastern Europe.

Kreizinger Zsuzsa Z Grózner Dénes D Sulyok Kinga M KM Nilsson Kristin K Hrivnák Veronika V Benčina Dušan D Gyuranecz Miklós M

BMC veterinary research 20171117 1

<h4>Background</h4>Mycoplasma synoviae causes infectious synovitis and respiratory diseases in chickens and turkeys and may lead to egg shell apex abnormalities in chickens; hence possesses high economic impact on the poultry industry. Control of the disease consists of eradication, vaccination or medication. The aim of the present study was to determine the in vitro susceptibility to 14 different antibiotics and an antibiotic combination of M. synoviae strains originating from Hungary and other ...[more]

PMID: 29149886

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Project description:Mycoplasma hyopneumoniae infections are responsible for significant economic losses in the swine industry. Commercially available vaccines are not able to inhibit the colonisation of the respiratory tract by M. hyopneumoniae absolutely, therefore vaccination can be completed with antibiotic treatment to moderate clinical signs and improve performances of the animals. Antibiotic susceptibility testing of M. hyopneumoniae is time-consuming and complicated; therefore, it is not accomplished routinely. The aim of this study was to determine the in vitro susceptibility to 15 different antibiotics of M. hyopneumoniae isolates originating from Hungarian slaughterhouses and to examine single-nucleotide polymorphisms (SNPs) in genes affecting susceptibility to antimicrobials. Minimum inhibitory concentration (MIC) values of the examined antibiotics against 44 M. hyopneumoniae strains were determined by microbroth dilution method. While all of the tested antibiotics were effective against the majority of the studied strains, high MIC values of fluoroquinolones (enrofloxacin 2.5 μg/ml; marbofloxacin 5 μg/ml) were observed against one strain (MycSu17) and extremely high MIC values of macrolides and lincomycin (tilmicosin, tulathromycin and lincomycin >64 μg/ml; gamithromycin 64 μg/ml; tylosin 32 μg/ml and tylvalosin 2 μg/ml) were determined against another, outlier strain (MycSu18). Amino acid changes in the genes gyrA (Gly81Ala; Ala83Val; Glu87Gly, according to Escherichia coli numbering) and parC (Ser80Phe/Tyr; Asp84Asn) correlated with decreased antibiotic susceptibility to fluoroquinolones and a SNP in the nucleotide sequence of the 23S rRNA (A2059G) was found to be associated with increased MIC values of macrolides. The correlation was more remarkable when final MIC values were evaluated. This study presented the antibiotic susceptibility profiles of M. hyopneumoniae strains circulating in the Central European region, demonstrating the high in vitro efficacy of the tested agents. The observed high MIC values correlated with the SNPs in the examined regions and support the relevance of susceptibility testing and directed antibiotic therapy.

Project description:IntroductionThe COVID-19 pandemic has been challenging time for medical care, especially in the field of infectious diseases (ID), but it has also provided an opportunity to introduce new solutions in HIV management. Here, we investigated the changes in HIV service provision across Central and Eastern European (CEE) countries before and after the COVID-19 outbreak.MethodsThe Euroguidelines in Central and Eastern Europe Network Group consists of experts in the field of ID from 24 countries within the CEE region. Between 11 September and 29 September 2021, the group produced an on-line survey, consisting of 32 questions on models of care among HIV clinics before and after the SARS-CoV-2 outbreak.ResultsTwenty-three HIV centers from 19 countries (79.2% of all countries invited) participated in the survey. In 69.5% of the countries, there were more than four HIV centers, in three countries there were four centers (21%), and in four countries there was only one HIV center in each country. HIV care was based in ID hospitals plus out-patient clinics (52%), was centralized in big cities (52%), and was publicly financed (96%). Integrated services were available in 21 clinics (91%) with access to specialists other than ID, including psychologists in 71.5% of the centers, psychiatrists in 43%, gynecologists in 47.5%, dermatologists in 52.5%, and social workers in 62% of all clinics. Patient-centered care was provided in 17 centers (74%), allowing consultations and tests to be planned for the same day. Telehealth tools were used in 11 centers (47%) before the COVID-19 pandemic outbreak, and in 18 (78%) after (p = 0.36), but were represented mostly by consultations over the telephone or via e-mail. After the COVID-19 outbreak, telehealth was introduced as a new medical tool in nine centers (39%). In five centers (28%), no new services or tools were introduced.ConclusionsAs a consequence of the COVID-19 pandemic, tools such as telehealth have become popularized in CEE countries, challenging the traditional approach to HIV care. These implications need to be further evaluated in order to ascertain the best adaptations, especially for HIV medicine.

Dataset Information

Antibiotic susceptibility profiles of Mycoplasma synoviae strains originating from Central and Eastern Europe.

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Antibiotic susceptibility profiles of Mycoplasma synoviae strains originating from Central and Eastern Europe.

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