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Ambar N, Thurber MI, Montiani-Ferreira F, Cray C. ASSESSMENT OF ACUTE PHASE PROTEINS AND PROTEIN ELECTROPHORESIS IN HEALTHY GIBBONS (HYLOBATIDAE) IN MANAGED SETTINGS. J Zoo Wildl Med 2024; 55:565-572. [PMID: 39255197 DOI: 10.1638/2023-0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2024] [Indexed: 09/12/2024] Open
Abstract
Acute phase proteins (APP) and protein electrophoresis (EPH) offer crucial insights into inflammation and overall health in various species. In this study, we validated serum amyloid A (SAA) and C-reactive protein (CRP) reagents for use with serum samples from gibbons (Hylobatidae, n = 50), spanning five species across four gibbon genera: eastern hoolock (Hoolock leuconedys), Javan (Hylobates moloch), pileated (Hylobates pileatus), siamang (Symphalangus syndactylus), and white-cheeked (Nomascus leucogenys). Preliminary reference intervals (n = 50) were calculated for SAA (1.8-48.1 mg/L), CRP (0.1-11.1 mg/L), and EPH via capillary zone electrophoresis, in healthy gibbons. Comparing clinically normal (n = 38) and abnormal (n = 12) individuals, significant differences were observed in the albumin/globulin ratio (P = 0.0003), prealbumin (P = 0.0345), and albumin (P = 0.0094), with abnormal individuals exhibiting statistically significantly higher γ-globulins (P = 0.0224), SAA (P = 0.0001), and CRP (P = 0.0003). Despite significant chromosomal rearrangements among different gibbon species, we found no statistically significant differences of SAA and CRP levels across species. However, some differences between species were observed in EPH fractions. This study presents the first report of the evaluation of APP and EPH in gibbons, underscoring the potential use of these biomarkers in gibbon health monitoring. Further research with larger sample sizes of both normal and abnormal gibbons is recommended to solidify the clinical utility of these biomarkers in these species.
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Affiliation(s)
- Neta Ambar
- Department of Surgical Sciences, University of Wisconsin-Madison, School of Veterinary Medicine, Madison, WI 53706, USA,
| | - Mary I Thurber
- Department of Surgical Sciences, University of Wisconsin-Madison, School of Veterinary Medicine, Madison, WI 53706, USA
| | - Fabiano Montiani-Ferreira
- Division of Comparative Pathology, Department of Pathology & Laboratory Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
- Department of Veterinary Medicine, Universidade Federal do Paraná, 1299, Downtown, Curitiba, Brazil
| | - Carolyn Cray
- Division of Comparative Pathology, Department of Pathology & Laboratory Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
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Ayodele BA, Pagel CN, Mackie EJ, Armour F, Yamada S, Zahra P, Courtman N, Whitton RC, Hitchens PL. Differences in bone turnover markers and injury risks between local and international horses: A Victorian Spring Racing Carnival study. Equine Vet J 2024. [PMID: 38634210 DOI: 10.1111/evj.14098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 04/04/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Musculoskeletal injuries (MSI) are common in racehorses and have been of increasing concern in horses travelling internationally to compete. Understanding the differences in bone turnover between local horses and international horses following long-distance air transportation may inform MSI prevention strategies. OBJECTIVES To understand the differences in bone turnover markers and risk of MSI between local horses and international horses following long-distance air transportation. STUDY DESIGN Prospective cohort. METHODS The concentrations of bone turnover markers (OCN and CTXI), markers of stress (cortisol), inflammation (serum amyloid A) and circadian rhythm (melatonin), and bisphosphonates were determined in blood samples collected twice (14-17 days apart), from horses following international travel (n = 69), and from local horses (n = 79). The associations between markers, long-distance travel and MSI were determined using multivariable generalised linear regression models. RESULTS Within 3-5 days post-transport, concentrations of cortisol in international horses were higher than those of local horses (main effect, Coef. 0.39; 95% CI 0.24, 0.54; p < 0.001) but they decreased and were not different to those of local horses at the second timepoint (interaction effect, Coef. -0.27; 95% CI -0.46, -0.07; p = 0.007). After adjusting for age and sex, OCN and CTXI were not significantly different between international and local horses; however, OCN was lower in international horses at timepoint 2 (interaction effect, Coef. -0.16; 95% CI -0.31, -0.01; p = 0.043). The prevalence of MSI was higher in the international (26%; 95% CI 16, 38%) compared with local horses (8%; 95% CI 3, 16%; p < 0.001), with all severe MSI sustained by the international horses. At the second timepoint compared with the first timepoint post-transport, cortisol remained high or increased (interaction effect, Coef. 0.43; 95% CI 0.24, 0.61; p < 0.001) and OCN increased (interaction effect, Coef. 0.26; 95% CI 0.08, 0.44; p = 0.006) in the horses that sustained severe MSI. MAIN LIMITATIONS Horse population and racing career parameters differed between groups. Bone turnover markers have low sensitivity to detect local bone changes. CONCLUSIONS Most horses showed minimal effects of long-distance air transport within 2 weeks relative to local horses as assessed by stress and bone turnover markers. Screening for persistent high cortisol and evidence of net bone formation after long-distance air transportation may help to identify racehorses at high risk of catastrophic MSI.
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Affiliation(s)
- Babatunde A Ayodele
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - Charles N Pagel
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - Eleanor J Mackie
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - Fiona Armour
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - Sean Yamada
- Racing Analytical Services Limited, Flemington, Victoria, Australia
| | - Paul Zahra
- Racing Analytical Services Limited, Flemington, Victoria, Australia
| | - Natalie Courtman
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - R Chris Whitton
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
| | - Peta L Hitchens
- Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, Victoria, Australia
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Jacobsen S. Use of serum amyloid A in equine medicine and surgery. Vet Clin Pathol 2023; 52 Suppl 1:8-18. [PMID: 36336845 DOI: 10.1111/vcp.13195] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/10/2022] [Accepted: 09/06/2022] [Indexed: 11/09/2022]
Abstract
Serum amyloid A (SAA) has become an indispensable part of the management of equine patients in general practice and specialized hospital settings. Although several proteins possess acute phase properties in horses, the usefulness of SAA exceeds that of other acute phase proteins. This is due to the highly desirable kinetics of the equine SAA response. SAA concentrations exhibit a rapid and pronounced increase in response to inflammation and a rapid decline after the resolution of inflammation. This facilitates the detection of inflammatory disease and real-time monitoring of inflammatory activity. SAA may be used in all stages of patient management: (1) before diagnosis (to rule in/rule out inflammatory disease), (2) at the time of diagnosis (to assess the severity of inflammation and assist in prognostication), and (3) after diagnosis (to monitor changes in inflammatory activity in response to therapy, with relapse of disease, or with infectious/inflammatory complications). By assessing other acute phase reactants in addition to SAA, clinicians can succinctly stage inflammation. White blood cell counts and serum iron concentration change within hours of an inflammatory insult, SAA within a day, and fibrinogen within 2-3 days; the interrelationship of these markers thus indicates the duration and activity of the inflammatory condition. Much research on the equine SAA response and clinical use has been conducted in the last decade. This is the prerequisite for the evidence-based use of this analyte. However, still today, most published studies involve a fairly low number of horses. To obtain solid evidence for use of SAA, future studies should be designed with larger sample sizes.
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Affiliation(s)
- Stine Jacobsen
- Department of Veterinary Clinical Sciences, Section Medicine & Surgery, University of Copenhagen, Copenhagen, Denmark
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Merritt EK, Nieman DC, Toone BR, Groen A, Pugachev A. Proteomic Markers of Non-functional Overreaching During the Race Across America (RAAM): A Case Study. Front Physiol 2019; 10:1410. [PMID: 31798466 PMCID: PMC6874140 DOI: 10.3389/fphys.2019.01410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/31/2019] [Indexed: 11/13/2022] Open
Abstract
In a previous study, proteomics procedures identified blood proteins as potential overreaching and overtraining biomarkers, and a targeted proteomics panel of 21 proteins was developed.
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Affiliation(s)
- Edward K Merritt
- Department of Kinesiology, Southwestern University, Georgetown, TX, United States
| | - David C Nieman
- North Carolina Research Campus, Appalachian State University, Kannapolis, NC, United States
| | - Brian R Toone
- Department of Mathematics and Computer Science, Samford University, Homewood, AL, United States
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Konstandi M, Sotiropoulos I, Matsubara T, Malliou F, Katsogridaki A, Andriopoulou CE, Gonzalez FJ. Adrenoceptor-stimulated inflammatory response in stress-induced serum amyloid A synthesis. Psychopharmacology (Berl) 2019; 236:1687-1699. [PMID: 30612190 PMCID: PMC6643287 DOI: 10.1007/s00213-018-5149-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 12/11/2018] [Indexed: 12/20/2022]
Abstract
RATIONALE Stressful life events are suggested to contribute to the development of various pathologies, such as cardiovascular disorders, whose etiopathogenesis is highly associated with elevated levels of serum amyloid A (SAA) proteins. SAA synthesis in the liver is regulated by a complex network of cytokines acting independently or in concert with various hormones/stimulants including the stress-activated sympathetic nervous system. OBJECTIVE This study aims to investigate the underlying mechanisms that regulate the stress-induced hepatic synthesis of SAA, with particular focus on adrenoceptors (AR), major components of the sympathoadrenal response to stress. METHODS AND RESULTS We demonstrated that repeated stress elevates IL-1β, IL-6, and TNFα serum levels in mice, accompanied by increased synthesis and secretion of hepatic SAA1/2 and SAA3, an effect that was blocked by AR antagonists. Moreover, stimulation of α1- and β1/2-ARs mimics the stress effect on SAA1/2 regulation, whereas α2-AR stimulation exhibits a relatively weak impact on SAA. In support of the essential cytokine contribution in the AR-agonist induced SAA production is the fact that the anti-inflammatory drug, sodium salicylate, prevented the AR-stimulated hepatic SAA1/2 synthesis by reducing IL-1β levels, whereas IL-1β inhibition with Anakinra mimics this sodium salicylate preventive effect, thus indicating a crucial role for IL-1β. Interestingly, the AR-driven SAA3 synthesis was elevated by sodium salicylate in a TNFα-dependent way, supporting diverse and complex regulatory roles of cytokines in SAA production. In contrast to α1/α2-AR, the β1/2-AR-mediated SAA1/2 and SAA3 upregulation cannot be reversed by fenofibrate, a hypolipidemic drug with anti-inflammatory properties. CONCLUSION Taken together, these findings strongly support a critical role of the AR-stimulated inflammatory response in the hepatic SAA production under stressful conditions, highlighting distinct AR type-specific mechanisms that regulate the hepatic synthesis of SAA1/2 and SAA3.
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Affiliation(s)
- Maria Konstandi
- Faculty of Medicine, Department of Pharmacology, University of Ioannina, Ioannina, Greece. .,Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Ioannis Sotiropoulos
- Life and Health Sciences Research Institute (ICVS), Medical School University of Minho, Braga, Portugal,ICVS/3B’s - PT Government Associate Laboratory, Braga, Portugal
| | - Tsutomu Matsubara
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA,Graduate School of Medicine, Department of Anatomy and Regenerative Biology, Osaka City University, Osaka, Japan
| | - Foteini Malliou
- Faculty of Medicine, Department of Pharmacology, University of Ioannina, Ioannina, Greece
| | - Alexandra Katsogridaki
- Faculty of Medicine, Department of Pharmacology, University of Ioannina, Ioannina, Greece
| | | | - Frank J. Gonzalez
- Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Turlo AJ, Cywinska A, Frisbie DD. Revisiting predictive biomarkers of musculoskeletal injury in thoroughbred racehorses: longitudinal study in polish population. BMC Vet Res 2019; 15:66. [PMID: 30808359 PMCID: PMC6390350 DOI: 10.1186/s12917-019-1799-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 01/25/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND High prevalence of musculoskeletal disorders in racehorses and its impact on horse welfare and racing economics call for improved measures of injury diagnosis and prevention. Serum biomarkers of bone and cartilage metabolism have previously shown promise in prediction of musculoskeletal injuries in horses. This study aimed to re-evaluate usability of the predictive serum biomarkers identified in North American Thoroughbred racehorses in a geographically distinct group of Polish Thoroughbreds. RESULTS Serum concentrations of bone and cartilage biomarkers: osteocalcin, c-terminal telopeptide of type I collagen, total glycosaminoglycans (GAG), chondroitin sulfate epitope and c-propeptide of type II procollagen (CPII) were evaluated in the beginning and the next 3 months of one racing season in a cohort of twenty-six 2-year-old Polish racehorses. Exit criteria were diagnosis of musculoskeletal injury, leading to > 5 days off training (n = 8), or completion of 3 study months with no training interruptions (n = 18). Normalized results and matching archival data from 35 2-year-old North American racehorses was used for logistic regression analysis to identify universal predictors of injury. Mean GAG and CPII levels were lower in injured group comparing to control, which is consistent with previous findings in racehorses. These biomarkers were also identified as predictors of injury in the mixed population model. Population origin had no significant effect on predictive value of evaluated biomarkers (Wald test p = 0.137). Decreased osteocalcin and increased c-terminal telopeptide of type I collagen levels in injured horses comparing to controls were specific for Polish population and signalized disruption in bone turnover homeostasis. CONCLUSIONS Changes in serum GAG and CPII in racehorses at risk of injury appear to be similar across distinct populations while dynamics of serum bone marker is more population-specific.
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Affiliation(s)
- Agnieszka J Turlo
- Department of Pathology and Veterinary Diagnostics, Warsaw University of Life Sciences, ul. Nowoursynowska 159c, 02-776, Warsaw, Poland.,Gail Holmes Equine Orthopaedic Research Center, Colorado State University, 300 West Drake Road, Fort Collins, CO, 80523, USA
| | - Anna Cywinska
- Department of Pathology and Veterinary Diagnostics, Warsaw University of Life Sciences, ul. Nowoursynowska 159c, 02-776, Warsaw, Poland
| | - David D Frisbie
- Gail Holmes Equine Orthopaedic Research Center, Colorado State University, 300 West Drake Road, Fort Collins, CO, 80523, USA.
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Witkowska-Piłaszewicz OD, Żmigrodzka M, Winnicka A, Miśkiewicz A, Strzelec K, Cywińska A. Serum amyloid A in equine health and disease. Equine Vet J 2019; 51:293-298. [PMID: 30565319 PMCID: PMC7163734 DOI: 10.1111/evj.13062] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 12/10/2018] [Indexed: 01/25/2023]
Abstract
Serum amyloid A (SAA) is the major acute phase protein in horses. It is produced during the acute phase response (APR), a nonspecific systemic reaction to any type of tissue injury. In the blood of healthy horses, SAA concentration is very low, but it increases dramatically with inflammation. Due to the short half‐life of SAA, changes in its concentration in blood closely reflect the onset of inflammation and, therefore, measurement of SAA useful in the diagnosis and monitoring of disease and response to treatment. Increases in SAA concentration have been described in equine digestive, reproductive and respiratory diseases and following surgical procedures. Moreover, SAA has proven useful for detection of some subclinical pathologies that can disturb training and competing in equine athletes. Increasing availability of diagnostic tests for both laboratory and field use adds to SAA's applicability as a reliable indicator of horses’ health status. This review article presents the current information on changes in SAA concentrations in the blood of healthy and diseased horses, focussing on clinical application of this biomarker.
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Affiliation(s)
- O D Witkowska-Piłaszewicz
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, WarsawUniversity of Life Sciences - SGGW, Warsaw, Poland
| | - M Żmigrodzka
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, WarsawUniversity of Life Sciences - SGGW, Warsaw, Poland
| | - A Winnicka
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, WarsawUniversity of Life Sciences - SGGW, Warsaw, Poland
| | - A Miśkiewicz
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, WarsawUniversity of Life Sciences - SGGW, Warsaw, Poland
| | - K Strzelec
- Department of Horse Breeding and Use, University of Life Sciences in Lublin, Lublin, Poland
| | - A Cywińska
- Department of Pathology and Veterinary Diagnostics, Faculty of Veterinary Medicine, WarsawUniversity of Life Sciences - SGGW, Warsaw, Poland
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Ibrahim NI, Ahmad MS, Zulfarina MS, Zaris SNASM, Mohamed IN, Mohamed N, Mokhtar SA, Shuid AN. Activities of Daily Living and Determinant Factors among Older Adult Subjects with Lower Body Fracture after Discharge from Hospital: A Prospective Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15051002. [PMID: 29772744 PMCID: PMC5982041 DOI: 10.3390/ijerph15051002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 01/06/2023]
Abstract
Fracture is a type of musculoskeletal injury that contributes to an inability to perform daily activities. The objective of this study was to evaluate activities of daily living (ADL) of older adult patients with lower body fracture and to determine factors influencing ADL. Patient's ADL was assessed at pre-fracture, ward admission and post-discharge phases using the Katz ADL questionnaire. There were 129 subjects at pre-fracture and ward phases and 89 subjects at discharge phase. There were four independent variables; age, gender, type of fracture and ability to walk before fracture. Logistic regression models showed that 'age' and 'ability to walk before fracture' were the determinant factors of dependent for 'bathing', 'dressing' and 'toileting'. The 'ability to walk before fracture' was the determinant factor of dependent for 'transferring'. 'Age' and 'gender' were the determinant factors of dependent for 'continence', while 'age' was the determinant factor of dependent for 'feeding'. The ADL score changes were significant across the phases with a reduction in ADL score in the ward admission phase and partial increment during the post-discharge phase. There were improvements in the health outcomes of subjects aged more than 50 years old after 3 months of being discharged from the hospital. In conclusion, age, being female, having a hip fracture and using a walking aid before fracture were the determinants identified in this study.
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Affiliation(s)
- Nurul Izzah Ibrahim
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Mohd Sharkawi Ahmad
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Mohamed S Zulfarina
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Sharifah Nurul Aqilah Sayed Mohd Zaris
- Department of Orthopedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Norazlina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Sabarul Afian Mokhtar
- Department of Orthopedics and Traumatology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
| | - Ahmad Nazrun Shuid
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
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Tozaki T, Kikuchi M, Kakoi H, Hirota KI, Mukai K, Aida H, Nakamura S, Nagata SI. Profiling of exercise-induced transcripts in the peripheral blood cells of Thoroughbred horses. J Equine Sci 2016; 27:157-164. [PMID: 27974875 PMCID: PMC5155134 DOI: 10.1294/jes.27.157] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/14/2016] [Indexed: 12/17/2022] Open
Abstract
Transcriptome analyses based on DNA microarray technology have been used to investigate gene expression profiles in horses. In this study, we aimed to identify
exercise-induced changes in the expression profiles of genes in the peripheral blood of Thoroughbred horses using DNA microarray technology (15,429 genes on
43,603 probes). Blood samples from the jugular vein were collected from six horses before and 1 min, 4 hr, and 24 hr after all-out running on a treadmill. After
the normalization of microarray data, a total of 26,830 probes were clustered into four groups and 11 subgroups showing similar expression changes based on
k-mean clustering. The expression level of inflammation-related genes, including interleukin-1 receptor type II (IL-1R2), matrix metallopeptidase 8 (MMP8),
protein S100-A8 (S100-A8), and serum amyloid A (SAA), increased at 4 hr after exercise, whereas that of c-Fos (FOS) increased at 1 min after exercise. These
results indicated that the inflammatory response increased in the peripheral blood cells after exercise. Our study also revealed the presence of genes that may
not be affected by all-out exercise. In conclusion, transcriptome analysis of peripheral blood cells could be used to monitor physiological changes induced by
various external stress factors, including exercise, in Thoroughbred racehorses.
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Affiliation(s)
- Teruaki Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Mio Kikuchi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Hironaga Kakoi
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Kei-Ichi Hirota
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Kazutaka Mukai
- Equine Research Institute, Japan Racing Association, Tochigi 329-0412, Japan
| | - Hiroko Aida
- Equine Research Institute, Japan Racing Association, Tochigi 329-0412, Japan
| | | | - Shun-Ichi Nagata
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
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