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Tokushige H, Kobayashi M, Iimori M, Ito H, Ueshiba H, Urayama S, Kurimoto S. Inhalation injury in 11 Thoroughbred racehorses: Clinical course on bronchoscopy, treatment and postinjury racing performance. EQUINE VET EDUC 2023. [DOI: 10.1111/eve.13790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Hirotaka Tokushige
- Racehorse Hospital, Ritto Training Center, Japan Racing Association Ritto Shiga Japan
| | - Minoru Kobayashi
- Racehorse Hospital, Ritto Training Center, Japan Racing Association Ritto Shiga Japan
| | - Mai Iimori
- Racehorse Hospital, Ritto Training Center, Japan Racing Association Ritto Shiga Japan
| | - Hiroki Ito
- Racehorse Hospital, Miho Training Center, Japan Racing Association Miho Inashiki, Ibaraki Japan
| | - Hiroki Ueshiba
- Racehorse Hospital, Ritto Training Center, Japan Racing Association Ritto Shiga Japan
| | - Shuntaro Urayama
- Racehorse Hospital, Ritto Training Center, Japan Racing Association Ritto Shiga Japan
| | - Shinjiro Kurimoto
- Epizootic Prevention Section, Equine Department Japan Racing Association Minato Tokyo Japan
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Sato W, Sukmawinata E, Uemura R, Kanda T, Kusano K, Kambayashi Y, Sato T, Ishikawa Y, Toya R, Sueyoshi M. Antimicrobial resistance profiles and phylogenetic groups of Escherichia coli isolated from healthy Thoroughbred racehorses in Japan. J Equine Sci 2020; 31:85-91. [PMID: 33376444 PMCID: PMC7750643 DOI: 10.1294/jes.31.85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/24/2020] [Indexed: 11/24/2022] Open
Abstract
In this study, we investigated the occurrence of antimicrobial resistance in commensal
Escherichia coli isolated from healthy Thoroughbred (TB) racehorses in Japan. A total of
212 fecal samples were individually collected from TB racehorses from March 2017 to August
2018 at Japan Racing Association training centers. E. coli was isolated by using selective
agar media, deoxycholate-hydrogen sulfide-lactose (DHL) and eosin methylene blue (EMB). A
total of 417 E. coli isolates were examined against 10 antimicrobial agents by using the
broth microdilution method. The 417 E. coli isolates were phylogenetically grouped using a
multiplex polymerase chain reaction. The highest proportion of resistance was observed for
streptomycin (30.9%, 129/417) followed by ampicillin (19.4%, 81/417), trimethoprim (15.8%,
66/417), tetracycline (8.4%, 35/417), chloramphenicol (2.6%, 11/417), kanamycin (1.2%,
5/417), nalidixic acid (0.5%, 2/417), cefazolin (0.2%, 1/417), colistin (0.2%, 1/417), and
gentamycin (0%). Multidrug-resistant (MDR) E. coli was detected in 7.9% (33/417) of
isolates. The proportions of resistance against ampicillin, streptomycin, kanamycin, and
chloramphenicol and of multidrug-resistant phenotypes in E. coli belonging to phylogenetic
group B2 were significantly higher than those of other groups. This study clarified the
distribution of antimicrobial-resistant (AMR) E. coli in Japanese racehorses. A continuous
monitoring program for antimicrobial resistance is required to control the spread of AMR
bacteria in racehorses.
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Affiliation(s)
- Wataru Sato
- Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Eddy Sukmawinata
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Ryoko Uemura
- Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Center for Animal Diseases Control, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Takuya Kanda
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Kanichi Kusano
- Miho Training Center, Racehorse Clinic, Japan Racing Association, Ibaraki 300-0400, Japan
| | - Yoshinori Kambayashi
- Miho Training Center, Racehorse Clinic, Japan Racing Association, Ibaraki 300-0400, Japan
| | - Takashi Sato
- Ritto Training Center, Racehorse Clinic, Japan Racing Association, Shiga 520-3005, Japan
| | - Yuhiro Ishikawa
- Ritto Training Center, Racehorse Clinic, Japan Racing Association, Shiga 520-3005, Japan
| | - Ryohei Toya
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
| | - Masuo Sueyoshi
- Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-1692, Japan
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Antimicrobial-Resistant Enterococcus faecium and Enterococcus faecalis Isolated From Healthy Thoroughbred Racehorses in Japan. J Equine Vet Sci 2020; 94:103232. [PMID: 33077095 DOI: 10.1016/j.jevs.2020.103232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/19/2020] [Accepted: 08/17/2020] [Indexed: 11/24/2022]
Abstract
In this study, the occurrence of antimicrobial-resistant (AMR) enterococci was evaluated in Thoroughbred (TB) racehorses in Japan. Fecal samples were collected from 212 healthy TB racehorses at the Miho and Ritto Training Centers of the Japan Racing Association from March 2017 to August 2018. Isolation and identification were performed by enterococcus selective medium and confirmed to the species using MALDI-TOF MS. Enterococcus faecium and E. faecalis isolates were subjected to antimicrobial susceptibility test against 11 antimicrobials by minimum inhibitory concentration based on recommendation from Clinical and Laboratory Standards Institute guidelines. Among 583 enterococcus isolates, E. faecium and E. faecalis were identified for 48.2% (281/583) and 7.4% (43/583), respectively. One isolate that was representing E. faecium (153 isolates) and E. faecalis (31 isolates) from each sample was selected for antimicrobial susceptibility test. The highest rate of resistance for E. faecium isolates was observed against enrofloxacin (57.5%; 88/153), followed by streptomycin (32.0%; 49/153), kanamycin (18.3%; 28/153), gentamycin (5.9%; 9/153), erythromycin (5.9%; 9/153), and oxytetracycline (4.6%; 7/153). For E. faecium isolates, the highest resistance was observed against streptomycin (90.3%; 28/31), followed by kanamycin (41.9%; 13/31), gentamycin (29.0%; 9/31), lincomycin (9.7%; 3/31), oxytetracycline (6.5%; 2/31), erythromycin (6.5%; 2/31), tylosin (6.5%; 2/31), enrofloxacin (6.5%; 2/31), and chloramphenicol (3.2%; 1/31). The results indicated that enrofloxacin and aminoglycosides were highly resistant among tested antimicrobials. Continuous monitoring studies are useful to increase the awareness of the potential for AMR bacteria to arise from imprudent use of antimicrobials in TB racehorses in Japan.
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Long A, Nolen-Walston R. Equine Inflammatory Markers in the Twenty-First Century: A Focus on Serum Amyloid A. Vet Clin North Am Equine Pract 2020; 36:147-160. [PMID: 32007299 PMCID: PMC7135104 DOI: 10.1016/j.cveq.2019.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Alicia Long
- Department of Clinical Studies, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA
| | - Rose Nolen-Walston
- Department of Clinical Studies, New Bolton Center, 382 West Street Road, Kennett Square, PA 19348, USA.
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Endo Y, Ishikawa Y, Arima D, Mae N, Iwamoto Y, Korosue K, Tsuzuki N, Hobo S. Effects of pre-shipping enrofloxacin administration on fever and blood properties in adult Thoroughbred racehorses transported a long distance. J Vet Med Sci 2017; 79:464-466. [PMID: 28111418 PMCID: PMC5383162 DOI: 10.1292/jvms.16-0465] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
To evaluate the effects of single-dose enrofloxacin (ERFX) on fever and blood properties in 68 Thoroughbred racehorses after long-distance transportation,
horses were assigned to receive ERFX (5 mg/kg, IV; ERFX group; n=52) or saline (0.9% NaCl) solution (50 ml, IV; control group; n=16) ≤1 hr
before transportation. Horses were transported 1,122 km using commercial vans over the course of approximately 21 hr. Clinical examinations and hematologic
analyses were performed before and after transportation. Rectal temperatures, white blood cell counts and serum amyloid A concentration of ERFX group were
significantly lower than control group (P<0.01, P<0.01 and P<0.05, respectively). In conclusion,
these results show ERFX administration just before transportation is effective at preventing transportation-associated fever in adult Thoroughbred
racehorses.
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Affiliation(s)
- Yoshiro Endo
- Miyazaki Yearling Training Farm, Japan Racing Association, Miyazaki 880-0036, Japan
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Endo Y, Hobo S, Korosue K, Ootsuka K, Kitauchi A, Kikkawa R, Hidaka Y, Hagio M, Tsuzuki N. Effects of low-dose G-CSF formulation on hematology in healthy horses after long-distance transportation. J Vet Med Sci 2015; 77:507-9. [PMID: 25648988 PMCID: PMC4427757 DOI: 10.1292/jvms.14-0586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The present study evaluated the effects of single-dose filgrastim on hematology in 16
healthy horses after long-distance transportation. Horses were assigned to receive
filgrastim (0.23 µg/kg, SC, once; G-CSF group; n=8) or saline (0.9% NaCl)
solution (0.3 ml, SC, once; control group; n=8) ≤ 1 hr before
transportation. Horses were transported 2,530 km using commercial vans over the course of
approximately 44 hr. Clinical examinations and hematologic analyses were performed on all
horses before and after transportation. Because the post-transportation white blood cell
counts and bacillary neutrophil to segmented neutrophil ratio were significantly higher in
the G-CSF group, filgrastim may have promoted the mobilization of neutrophils from marrow.
Filgrastim deserves a further study for efficacy in preventing horse shipping fever.
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Affiliation(s)
- Yoshiro Endo
- Miyazaki Yearling Training Farm, Japan Racing Association, 2347, Oharu, Hanagashima-cho, Miyazaki-shi, Miyazaki 880-0036, Japan
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Endo Y, Tsuchiya T, Akiyama K, Takebe N, Nakai K, Korosue K, Ishimaru M, Tsuzuki N, Hobo S. Comparison of the Occurrence of Transportation-associated Fever in 2 Years Old Thoroughbreds before and after Introduction of Prophylactic Marbofloxacin Administration. J Equine Sci 2014; 25:79-81. [PMID: 25558181 PMCID: PMC4266755 DOI: 10.1294/jes.25.79] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 11/07/2014] [Indexed: 11/30/2022] Open
Abstract
In order to reveal the preventive effect of marbofloxacin (MRFX) administration just before transportation, we compared the
occurrence of transportation-associated fever before and after introduction of MRFX administration. After the introduction of
prophylactic MRFX administration, the rectal temperatures of horses after transportation were significantly lower than before the
introduction of MRFX administration (P<0.01) and the number of febrile horses was significantly lower than before the
introduction of MRFX administration (P<0.01). In conclusion, these results show that prophylactic MRFX administration just
before transportation is clinically effective at preventing transportation-associated fever.
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Affiliation(s)
- Yoshiro Endo
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Takeru Tsuchiya
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Kentaro Akiyama
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Naoya Takebe
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Kenji Nakai
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Kenji Korosue
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Mutsuki Ishimaru
- Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan
| | - Nao Tsuzuki
- Laboratory of Veterinary Surgery, Faculty of Agriculture, University of Miyazaki, Miyazaki 880-0036, Japan
| | - Seiji Hobo
- Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
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