Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey

Streptococcal microorganisms mostly beta hemolytic streptococci are the most important and widespread bacterial agents causing infectious diseases in horses and they often follow a difficult course. The goals of the present study are to determine; i) together with cytologic findings, the system dist...

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Main Author: Alper METE
Format: Article
Language:English
Published: Kafkas University, Faculty of Veterinary Medicine 2017-10-01
Series:Kafkas Universitesi Veteriner Fakültesi Dergisi
Subjects:
Online Access:https://vetdergikafkas.org/pdf.php?id=2211
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author Alper METE
author_facet Alper METE
author_sort Alper METE
collection DOAJ
description Streptococcal microorganisms mostly beta hemolytic streptococci are the most important and widespread bacterial agents causing infectious diseases in horses and they often follow a difficult course. The goals of the present study are to determine; i) together with cytologic findings, the system distributions of the beta hemolytic streptococci as a primary pathogen, ii) the susceptibility patterns to the most commonly used antibiotics in thoroughbred and Arabian racing horses iii) the presence of multiple antibiotics resistance of beta hemolytic streptococci encountered in horses. Beta hemolytic streptococci isolated and cytologically neutrophilic inflammation confirmed samples which were submitted to Jockey Club of Turkey horse hospital laboratory between April 2014 – April 2017 were included into the study. The study was conducted on 128 samples including tracheal wash (71.9%), endometrial swabs (21.9%), abscess material (5.4%) and urine sample (0.8%). According to the isolation results, S. equi subsp. zooepidemicus (S. zooepidemicus), S. dysgalactiae subsp. equisimilis (S. equisimilis) and S. equi subsp. equi (S. equi) were isolated from whole samples as 80.4%, 14.1% and 5.5% respectively. Antibiotics susceptibility results demonstrated that amoxicillin/clavulanic acid (100%), amoxicillin (100%), ampicillin (100%), penicillin (100%), imipenem (100%), ampicillin/sulbactam (100%), rifampicin (97.6%), ceftiofur (100%) and ceftazidime (87.5%) were found to be effective, while enrofloxacin (14.8%), amikacin (0.8%), gentamicin (4.7%), kanamycin (0%), neomycin (0%), streptomycin (0%), oxytetracycline (7.0%) and trimethoprim/ sulfamethoxazole (27.3%) were found to be mostly uneffective. The multiple antibiotics resistance rate was found to be 1.6% amongst beta hemolytic streptococci isolates in horses. These results of the present study confirmed the results of many similiar previous studies that S. zooepidemicus was the most frequently isolated beta hemolytic Streptococcus species followed by S. equisimilis and S. equi. In suspecious infections where a beta hemolytic streptococcal infection is suspected penicillin should be considered as the first line antimicrobial for horses when results of the samples submitted for bacterial culture and susceptibility test results are pending.
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spelling doaj.art-e970de3fd89642adb7be9afe83d783bb2023-06-19T06:44:25ZengKafkas University, Faculty of Veterinary MedicineKafkas Universitesi Veteriner Fakültesi Dergisi1309-22512017-10-01241839010.9775/kvfd.2017.183702211Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkeyAlper METE0Jockey Club of Turkey İstanbul Veliefendi Racetrack Horse Hospital, TR-34144 Bakırköy, İstanbul - TURKEYStreptococcal microorganisms mostly beta hemolytic streptococci are the most important and widespread bacterial agents causing infectious diseases in horses and they often follow a difficult course. The goals of the present study are to determine; i) together with cytologic findings, the system distributions of the beta hemolytic streptococci as a primary pathogen, ii) the susceptibility patterns to the most commonly used antibiotics in thoroughbred and Arabian racing horses iii) the presence of multiple antibiotics resistance of beta hemolytic streptococci encountered in horses. Beta hemolytic streptococci isolated and cytologically neutrophilic inflammation confirmed samples which were submitted to Jockey Club of Turkey horse hospital laboratory between April 2014 – April 2017 were included into the study. The study was conducted on 128 samples including tracheal wash (71.9%), endometrial swabs (21.9%), abscess material (5.4%) and urine sample (0.8%). According to the isolation results, S. equi subsp. zooepidemicus (S. zooepidemicus), S. dysgalactiae subsp. equisimilis (S. equisimilis) and S. equi subsp. equi (S. equi) were isolated from whole samples as 80.4%, 14.1% and 5.5% respectively. Antibiotics susceptibility results demonstrated that amoxicillin/clavulanic acid (100%), amoxicillin (100%), ampicillin (100%), penicillin (100%), imipenem (100%), ampicillin/sulbactam (100%), rifampicin (97.6%), ceftiofur (100%) and ceftazidime (87.5%) were found to be effective, while enrofloxacin (14.8%), amikacin (0.8%), gentamicin (4.7%), kanamycin (0%), neomycin (0%), streptomycin (0%), oxytetracycline (7.0%) and trimethoprim/ sulfamethoxazole (27.3%) were found to be mostly uneffective. The multiple antibiotics resistance rate was found to be 1.6% amongst beta hemolytic streptococci isolates in horses. These results of the present study confirmed the results of many similiar previous studies that S. zooepidemicus was the most frequently isolated beta hemolytic Streptococcus species followed by S. equisimilis and S. equi. In suspecious infections where a beta hemolytic streptococcal infection is suspected penicillin should be considered as the first line antimicrobial for horses when results of the samples submitted for bacterial culture and susceptibility test results are pending.https://vetdergikafkas.org/pdf.php?id=2211antibiotic susceptibilitybeta hemolytic streptococcicytologyhorselancefield group c streptococcus spp
spellingShingle Alper METE
Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
Kafkas Universitesi Veteriner Fakültesi Dergisi
antibiotic susceptibility
beta hemolytic streptococci
cytology
horse
lancefield group c streptococcus spp
title Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
title_full Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
title_fullStr Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
title_full_unstemmed Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
title_short Isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
title_sort isolation and antibiotic susceptibilities of beta hemolytic streptococcus species from various body site infections with cytologic evidences in thoroughbred and arabian racehorses in turkey
topic antibiotic susceptibility
beta hemolytic streptococci
cytology
horse
lancefield group c streptococcus spp
url https://vetdergikafkas.org/pdf.php?id=2211
work_keys_str_mv AT alpermete isolationandantibioticsusceptibilitiesofbetahemolyticstreptococcusspeciesfromvariousbodysiteinfectionswithcytologicevidencesinthoroughbredandarabianracehorsesinturkey