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Page AE, Johnson M, Parker JL, Jacob O, Poston R, Adams AA, Adam EN. The Effects of Intra-Articular Triamcinolone and Autologous Protein Solution on Metabolic Parameters in Horses. Animals (Basel) 2024; 14:2250. [PMID: 39123776 PMCID: PMC11311071 DOI: 10.3390/ani14152250] [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: 07/05/2024] [Revised: 07/29/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024] Open
Abstract
Intra-articular corticosteroids are a popular treatment choice for joint-associated pain and inflammation in horses despite recent work on the metabolic effects of these drugs. The goal of this project was to compare metabolic effects between intra-articular (IA) triamcinolone acetonide (TA) and an autologous protein solution (APS). Five mixed-breed geldings (4-9 years) were utilized for this project. Three identical and consecutive 28-day treatment blocks were used, with metacarpophalangeal IA treatments consisting of equal volumes of saline, a commercially available APS, or 9 mg of TA. Regular plasma and serum samples were collected for ACTH, cortisol, glucose, insulin, and thyroid hormone analysis, in addition to thyrotropin-releasing hormone (TRH) and oral sugar tests (OSTs). Significant treatment effects of IA TA were present at 48 h post-injection in both the TRH and the OST. There was also significant suppression by IA TA of baseline ACTH and cortisol between 2 h and 96 h post-treatment, hyperglycemia between 12 h and 48 h, and hyperinsulinemia at 32 h post-treatment. There were no treatment effects with respect to any measured thyroid hormones, nor were there any significant treatment effects of APS noted. Results suggest at least 2 days and up to 7 days should elapse between a single 9 mg IA TA treatment and OST and/or TRH testing. This study found that TA exhibits significant effects on ACTH, cortisol, glucose, and insulin, while the APS does not.
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Affiliation(s)
- Allen E. Page
- Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, KY 40546, USA (A.A.A.); (E.N.A.)
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Hallowell KL, Dembek K, Horne CR, Knych HK, Messenger KM, Schnabel LV. Systemic absorption of triamcinolone acetonide is increased from intrasynovial versus extrasynovial sites and induces hyperglycemia, hyperinsulinemia, and suppression of the hypothalamic-pituitary-adrenal axis. Front Vet Sci 2024; 11:1388470. [PMID: 38828366 PMCID: PMC11141165 DOI: 10.3389/fvets.2024.1388470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/01/2024] [Indexed: 06/05/2024] Open
Abstract
Steroid-associated laminitis remains a major concern with use of corticosteroids in horses. Individual case factors such as joint pathology, pre-existing endocrinopathies, or corticosteroid type, dose, and timing influencing steroid-induced laminitis risk have not been investigated. This study aimed to determine if systemic absorption of triamcinolone acetonide (TA) varies between intrasynovial (antebrachiocarpal) and extrasynovial (sacroiliac) injection sites, and to determine the effects of TA absorption on glucose, insulin, cortisol, and adrenocorticotropic hormone (ACTH). Twenty adult horses were randomized into antebrachiocarpal or sacroiliac joint injection groups, and each horse received bilateral injections with a total dose of 18 mg triamcinolone. Blood was collected prior to injection and at 1, 2, 4, 6, 8, 10, 12, 16, 20, 24, 36, 48, 60, and 72 h post-injection. Peak TA absorption occurred at 8 h in both groups, and was significantly higher in the intrasynovial group compared to the extrasynovial group (1.397 ng/mL, 0.672 ng/mL, p < 0.05). Plasma TA levels were significantly higher in the intrasynovial group from 8 to 36 h post-injection (p < 0.05). There was no difference in glucose, insulin, cortisol, or ACTH between groups at any time point. Insulin and glucose were significantly increased from baseline at all timepoints from 10-72 h and 1-72 h post-injection, respectively. Horses with elevated baseline insulin values (>20 μU/mL) from both groups experienced a more marked hyperinsulinemia, reaching a mean peak insulin of 197.5 μU/mL as compared to 90.06 μU/mL in those with normal baseline insulin. Cortisol and ACTH were significantly decreased from baseline at timepoints from 4-72 h post-injection in both groups. This study is the first to evaluate drug absorption from the sacroiliac site and demonstrates that drug absorption varies between intrasynovial and extrasynovial injection sites. TA absorption causes metabolic derangements, most notably a marked hyperinsulinemia that is more severe in horses with elevated baseline insulin values. The influence of baseline endocrinopathies on response to corticosteroid administration as well as the effect of corticosteroid-induced metabolic derangements warrant further investigation as risk factors for corticosteroid-associated laminitis.
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Affiliation(s)
- Kimberly L. Hallowell
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
| | - Katarzyna Dembek
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
| | - Caitlyn R. Horne
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
| | - Heather K. Knych
- K. L. Maddy Equine Analytical Pharmacology Laboratory, School of Veterinary Medicine, University of California-Davis, Davis, CA, United States
| | - Kristen M. Messenger
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC, United States
| | - Lauren V. Schnabel
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC, United States
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Shahinfar S, Maibach H. Enigma of Intramuscular Triamcinolone Acetonide (Kenalog ®) Efficacy. Clin Pharmacokinet 2023; 62:1189-1199. [PMID: 37598107 DOI: 10.1007/s40262-023-01297-5] [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: 08/07/2023] [Indexed: 08/21/2023]
Abstract
Triamcinolone acetonide is a glucocorticosteroid used in standard clinical practice for its anti-inflammatory properties. Although it can be given via different routes of administration, the intramuscular route is unique compared with other corticosteroids-its effects remain potent over a longer period of time. We summarize the existing literature on the pharmacokinetic and pharmacodynamic mechanisms of intramuscular triamcinolone acetonide (Kenalog®). The fascinating nature of the purported efficacy of triamcinolone acetonide may be attributed to differing binding mechanisms, low solubility in blood, a low renal clearance rate, and various metabolites and other yet defined effects on skin. The enigma of the purported efficacy of triamcinolone acetonide may lie in the fact that it has a unique nature of having a long-term effect on dermatologic disease using a seemingly low dose compared with other routes of administration and other corticosteroids. Possible reasons for this may be binding differences at the intramuscular site, low solubility due to acetonide esters, a slow rate of absorption from the injected site, and a low renal clearance rate. There is still much to be learned about its mechanism of action, which may be of clinical and therapeutic significance.
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Affiliation(s)
- Sheeva Shahinfar
- Texas A&M University School of Medicine, 8447 Riverside Pkwy, Bryan, TX, 77807, USA.
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Partridge E, Adam E, Wood C, Parker J, Johnson M, Horohov D, Page A. Residual effects of intra-articular betamethasone and triamcinolone acetonide in an equine acute synovitis model. Equine Vet J 2023; 55:905-915. [PMID: 36397207 DOI: 10.1111/evj.13899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 11/10/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Intra-articular (IA) corticosteroids are regularly used in equine athletes for the control of joint inflammation. OBJECTIVES The goal of this study was to use an acute synovitis inflammation model to determine the residual effects of IA betamethasone and triamcinolone acetonide on various inflammatory parameters and lameness. STUDY DESIGN Crossover randomised trial. METHODS Five mixed-breed, 2-year-old horses were randomly allocated to an IA treatment of the radiocarpal joint with 9 mg of either betamethasone or triamcinolone acetonide. Two weeks following treatment, horses were injected with 1 μg of lipopolysaccharide (LPS) diluted in 1 ml of saline. Following LPS injection, horses were crossed-over and both sets of injections were repeated after a washout period. Blood samples were collected at multiple time points for mRNA analysis, as well as serum amyloid A (SAA) and cortisol determination. At each time point, lameness was also subjectively scored. Additional injections with saline-only or LPS-only (twice) were conducted as negative and positive controls, respectively. Two-way repeated measures analysis of variance was used to analyse all data. RESULTS Corticosteroid-only treatments result in significant mRNA expression differences, as well as significant and prolonged cortisol suppression. Following LPS injection, there was a residual treatment effect with triamcinolone evidenced by a significant treatment effect on IL-6 and PTGS1 (cyclooxygenase-1), lameness, SAA and cortisol concentrations, while only IL-6 expression was affected by betamethasone. MAIN LIMITATIONS The acute synovitis model used here results in significant inflammation and is not representative of the low-grade inflammation seen with typical joint disease and residual anti-inflammatory effects may be more profound in naturally occurring joint disease. CONCLUSIONS Current regulatory guidelines may be insufficient if the concern is residual anti-inflammatory effects. Additionally, intra-articular corticosteroid administration is not without risk, as evidenced by a significant suppression of serum cortisol concentration and, as such, the benefits of their administration should be weighed against those risks.
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Affiliation(s)
- Emma Partridge
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
| | - Emma Adam
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
| | - Courtney Wood
- Lincoln Memorial University, Harrogate, Tennessee, USA
| | - Jordan Parker
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
| | - Mackenzie Johnson
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
| | - David Horohov
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
| | - Allen Page
- Department of Veterinary Science, University of Kentucky, Maxwell H. Gluck Equine Research Center, Lexington, Kentucky, USA
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Investigation of the Excretion of Triamcinolone Acetonide and Its Metabolite. SEPARATIONS 2023. [DOI: 10.3390/separations10030164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
Triamcinolone acetonide (TA) is a synthetic corticosteroid commonly used in medical practice to treat various skin conditions, including eczema, dermatitis, and allergies. It is a highly potent derivative of triamcinolone, with a strength that is about eight times greater than prednisone. Although it is sometimes used by athletes, it is important to note that the World Anti-Doping Agency (WADA) prohibits the use of glucocorticoids in competition when administered via injection, oral (including oromucosal, such as buccal, gingival, or sublingual), or rectal routes. However, they are allowed if administered otherwise, such as via inhalation or topical application to the skin. Anti-doping laboratories generally report Adverse Analytical Findings (AAF) for glucocorticoid group substances when their estimated concentration exceeds 30 ng/mL, with some exceptions such as triamcinolone acetonide, which has a reporting limit of 15 ng/mL. It is important to note that this only applies to the parent compound of specified metabolites. To address interpretation issues that can arise with other glucocorticoids, such as budesonide, the authors of this study investigated whether similar issues occur with triamcinolone acetonide. Specifically, they examined whether therapeutic doses of the commonly used medication Previsone could result in anti-doping rule violations due to the presence of triamcinolone acetonide and its metabolites in urine. The study involved ten healthy volunteers, and the analytical procedure was developed using liquid/liquid extraction, hydrolysis, and LC/MS/MS analysis. The results of the study showed that topical administration of therapeutic doses of Previsone does not pose a threat of anti-doping rules violation, as the excretion of the parent compound does not exceed the reporting limit in urine. Additionally, the concentration of 6β-hydroxy Triamcinolone acetonide was also well below the reporting limit.
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Knych HK, Weiner D, Harrison L, McKemie DS. Pharmacokinetics and pharmacodynamics of intra-articular isoflupredone following administration to horses with lipopolysaccharide-induced synovitis. BMC Vet Res 2022; 18:436. [PMID: 36514067 PMCID: PMC9746120 DOI: 10.1186/s12917-022-03537-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Intra-articular corticosteroids, such as isoflupredone acetate, are commonly used in the treatment of joint inflammation, especially in performance horses. Following administration in a non-inflamed joints blood concentrations of isoflupredone were low and detectable for only a short period of time post-administration compared to synovial fluid concentrations. For some drugs, inflammation can affect pharmacokinetics, therefore, the goal of the current study was to describe the pharmacokinetics of isoflupredone acetate following intra-articular administration using a model of acute synovitis. Secondarily, pharmacodynamic effects, including effects on joint circumference, joint flexion, and lameness following intra-articular administration of isoflupredone acetate in the experimental model were described. METHODS Sixteen horses received a single intra-articular dose of 8 mg of isoflupredone acetate or saline 12 h post-administration of lipopolysaccharide. Blood and urine samples were collected up to 72 h and synovial fluid for 28 days post-administration, drug concentrations determined by liquid chromatography- mass spectrometry and pharmacokinetic analysis performed. Joint circumference, maximum angle of pain free joint flexion and lameness were evaluated prior to and post-treatment. RESULTS The maximum isoflupredone plasma concentration was 2.45 ± 0.61 ng/mL at 2.5 ± 0.75 h and concentrations were less than the limit of quantitation by 72 h. Isoflupredone was below detectable concentrations in urine by 72 h post-administration in all horses and no longer detectable in synovial fluid by 96 h post-administration. Joint circumference was significantly decreased in the isoflupredone treatment group compared to the saline group at 24 and 48 h post drug administration. Pain free joint flexion was significantly different between the saline and isoflupredone treatment groups on day 4 post-treatment. CONCLUSIONS Synovial fluid concentrations and maximum plasma concentrations of isoflupredone differed slightly between the current study and a previous one describing administration into a non-inflamed joint, however, the detection time of isoflupredone in blood was comparable. Effects of isoflupredone on joint circumference and degree of pain free joint flexion suggest a short duration of effect with respect to alleviation of lipopolysaccharide induced synovitis, however, results of this study support future studies of the anti-inflammatory effects of intra-articular isoflupredone acetate.
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Affiliation(s)
- Heather K. Knych
- grid.27860.3b0000 0004 1936 9684K.L. Maddy Equine Analytical Pharmacology Laboratory, School of Veterinary Medicine, University of California, 620 West Health Science Drive, Davis, CA 95616 USA ,grid.27860.3b0000 0004 1936 9684Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA USA
| | | | | | - Daniel S. McKemie
- grid.27860.3b0000 0004 1936 9684K.L. Maddy Equine Analytical Pharmacology Laboratory, School of Veterinary Medicine, University of California, 620 West Health Science Drive, Davis, CA 95616 USA
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Boorman S, McMaster MA, Groover E, Caldwell F. Review of glucocorticoid therapy in horses: Intra‐articular corticosteroids. EQUINE VET EDUC 2022. [DOI: 10.1111/eve.13719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sophie Boorman
- College of Veterinary Medicine Auburn University Auburn Alabama USA
| | - Mattie A. McMaster
- College of Medical, Veterinary and Life Sciences University of Glasgow Glasgow UK
| | - Erin Groover
- College of Veterinary Medicine Auburn University Auburn Alabama USA
| | - Fred Caldwell
- College of Veterinary Medicine Auburn University Auburn Alabama USA
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Tou K, Cawley A, Bowen C, Sornalingam K, Fu S. Measurements of Hydrocortisone and Cortisone for Longitudinal Profiling of Equine Plasma by LC-MS/MS. Drug Test Anal 2022; 14:943-952. [PMID: 35195373 PMCID: PMC9545025 DOI: 10.1002/dta.3244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 11/17/2022]
Abstract
The conventional detection of exogenous drugs in equine doping samples has been used for confirmation and subsequent prosecution of participants responsible. In recent years, alternative methods using indirect detection have been investigated due to the expanding number of pharmaceutical agents available with the potential of misuse. The monitoring of endogenous biomarkers such as hydrocortisone (HC) has been studied in equine urine with an international threshold of 1 μg/ml established; however, there is no current threshold for equine plasma. The aim of this research was to investigate plasma concentrations of HC and cortisone (C) in race day samples compared to an administration of Triamcinolone Acetonide (TACA). The reference population (n = 1150) provided HC (6 to 145 ng/ml) and C (0.7 to 13 ng/ml) levels to derive the HC to C ratio (HC/C). Population reference limits (PRLs) were proposed for HC/C values at 0.2 (lower) and 61 (upper). Administration of TACA resulted in down‐regulation of HC/C values below the estimated PRLs for up to 96 h post‐administration. This indirect detection period was longer than the detection of TACA for 72 h. The use of individual reference limits (IRLs) for HC/C values was investigated to support the Equine Biological Passport (EBP), an intelligence model developed by Racing NSW for longitudinal monitoring of biomarkers.
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Affiliation(s)
- Kathy Tou
- Centre for Forensic Science, University of Technology Sydney, Broadway, NSW, Australia
| | - Adam Cawley
- Australian Racing Forensic Laboratory, Racing NSW, Sydney, NSW, Australia
| | - Christopher Bowen
- Mass Spectrometry Business Unit, Shimadzu Scientific Instruments (Australasia), Rydalmere, NSW, Australia
| | | | - Shanlin Fu
- Centre for Forensic Science, University of Technology Sydney, Broadway, NSW, Australia
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JOHNSON JP, VINARDELL T, DAVID F. Ultrasound-guided injections of the equine head and neck: review and expert opinion. J Equine Sci 2021; 32:103-115. [PMID: 35023988 PMCID: PMC8731684 DOI: 10.1294/jes.32.103] [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: 05/17/2021] [Accepted: 09/15/2021] [Indexed: 12/04/2022] Open
Abstract
Ultrasound-guided injections can be used for a wide variety of conditions in the horse, including both diagnostic and therapeutic applications. Benefits of ultrasound guidance include more accurate deposition of injectate compared with blind approaches. Improved identification of vital structures, including nerves and blood vessels, allows their avoidance and thus reduces procedure-associated complications. Validation of such ultrasound-guided techniques has shown that they can be easily learnt by inexperienced veterinarians, assuming a proper knowledge of the sonographic anatomy. In many cases they can be employed in the field with a high level of accuracy, using widely available equipment, and with complete adherence to the sterility principles. Many ultrasound-guided injection techniques of the axial skeleton in the horse have been described in past years, enabling the equine veterinarian to perform more accurate treatments of specific anatomical areas. The goal of this review is to discuss diagnostic and therapeutic ultrasound-guided injection techniques of the skull and cervical spine in the horse, including those for the retrobulbar space, maxillary and inferior alveolar nerves, atlanto-occipital and atlanto-axial junctions, and cervical articular process joints, as well as the 1st cervical nerve, the C2 and C3 nerve plexus, and the 6th, 7th, and 8th cervical nerve roots.
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Affiliation(s)
- Jessica P. JOHNSON
- Equine Veterinary Medical Center, A Member of
Qatar Foundation, P.O. Box 6788, Doha, Qatar
| | - Tatiana VINARDELL
- Equine Veterinary Medical Center, A Member of
Qatar Foundation, P.O. Box 6788, Doha, Qatar
- College of Health & Life Science, Hamad Bin
Khalifa University, A Member of Qatar Foundation, P.O. Box 34110, Doha,
Qatar
| | - Florent DAVID
- Equine Veterinary Medical Center, A Member of
Qatar Foundation, P.O. Box 6788, Doha, Qatar
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Ramey DW, Knych HK. Oral prednisolone achieves measurable concentrations in equine synovial fluid within 3 hours of administration: Preliminary observations. EQUINE VET EDUC 2021. [DOI: 10.1111/eve.13588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - H. K. Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory Davis California USA
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de Clifford LT, Lowe JN, McKellar CD, McGowan C, David F. A Double-Blinded Positive Control Study Comparing the Relative Efficacy of 2.5% Polyacrylamide Hydrogel (PAAG) Against Triamcinolone Acetonide (TA) And Sodium Hyaluronate (HA) in the Management of Middle Carpal Joint Lameness in Racing Thoroughbreds. J Equine Vet Sci 2021; 107:103780. [PMID: 34802625 DOI: 10.1016/j.jevs.2021.103780] [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: 02/25/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 12/01/2022]
Abstract
The purpose of this prospective double-blinded positive control study was to compare the efficacy of 2.5% polyacrylamide hydrogel (2.5% PAAG) in the management of middle carpal joint lameness in Thoroughbreds against treatments of triamcinolone acetonide (TA) or sodium hyaluronate (HA). A total of 31 flat-racing Thoroughbreds with lameness (grade 1-3/5) localized to the carpus by intra-articular analgesia were selected. Following a radiological assessment of the carpi confirming the absence of fragment/fracture, the horses were randomly assigned for intra-articular treatment with either 2 ml of 2.5% PAAG, 12 mg TA or 20 mg HA (followed by two further intravenous treatments of 40 mg, at weekly intervals in the HA group only), by a treating veterinarian. All horses were rested for 48 hours post-treatment and then re-entered an unaltered training regimen. Subsequent examinations at 2, 4, and 6 weeks were performed by a blinded examining veterinarian for all groups, while horses treated with 2.5% PAAG were monitored for 12 weeks for recurrence of lameness. Significantly more joints treated with 2.5% PAAG were lame free (83%) at 6 weeks compared to TA (27%; P = .007) and to HA (40%; P = .04). There was no significant difference between TA and HA groups at any time. All the joints treated within 2.5% PAAG that were lame free at 6 weeks (10/12) were still lame-free at 12 weeks. In conclusion, treatment with 2.5% PAAG led to statistically superior results compared to TA and HA in the management of selected middle carpal joint lameness in flat-racing Thoroughbreds, with therapeutic effects persisting up to 12 weeks.
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Affiliation(s)
| | | | | | - Catherine McGowan
- Equine Clinical Science, University of Liverpool, Leahurst, United Kingdom
| | - Florent David
- Equine Veterinary Medical Center, Member of Qatar Foundation, Al Rayyan, Doha, Qatar; College of Health & Life Science, Hamad Bin Khalifa University, Member of Qatar Foundation, Education city, Doha, Qatar.
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Sullivan SN, Cole SL, Stewart MC, Brokken MT, Durgam S. Ex vivo effects of corticosteroids on equine deep digital flexor and navicular fibrocartilage explant cell viability. Am J Vet Res 2021; 82:125-131. [PMID: 33480274 DOI: 10.2460/ajvr.82.2.125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the effects of triamcinolone acetonide (TA) and methylprednisolone acetate (MPA) on the viability of resident cells within the fibrocartilage on the dorsal surface of the deep digital flexor tendon (FC-DDFT) and fibrocartilage on the flexor surface of the navicular bone (FC-NB) of horses. SAMPLE 12 to 14 explants of FC-DDFT and of FC-NB from grossly normal forelimbs of 5 cadavers of horses aged 9 to 15 years without evidence of musculoskeletal disease. PROCEDURES Explants were incubated with culture medium (control) or TA-supplemented (0.6 or 6 mg/mL) or MPA-supplemented (0.5 or 5 mg/mL) medium for 6 or 24 hours. Explant metabolic activity and percentage of dead cells were assessed with a resazurin-based assay and live-dead cell staining, respectively, at each time point. Drug effects were assessed relative to findings for the respective control group. RESULTS Application of TA (at both concentrations) did not significantly change the cell viability of FC-DDFT explants. For FC-NB explants, TA at 6 mg/mL significantly reduced the metabolic activity and increased the percentage of dead cells at both time points. With either MPA concentration, FC-DDFT and FC-NB explants had reduced metabolic activity and an increased percentage of dead cells at 24 hours, whereas only MPA at 5 mg/mL was cytotoxic at the 6-hour time point. CONCLUSIONS AND CLINICAL RELEVANCE In ex vivo explants, TA was less cytotoxic to equine FC-DDFT and FC-NB cells, compared with MPA. Further work is warranted to characterize the drugs' transcriptional and translational effects as well as investigate their cytotoxicity at lower concentrations.
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Di Salvo A, Chiaradia E, Nannarone S, Della Rocca G. Intra-articular use of analgesic/antinflammatory drugs in dogs and horses. Res Vet Sci 2020; 134:159-170. [PMID: 33387756 DOI: 10.1016/j.rvsc.2020.12.014] [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: 09/03/2020] [Revised: 11/24/2020] [Accepted: 12/22/2020] [Indexed: 12/27/2022]
Abstract
Joint pain is a major cause of lameness in animals such as horses and dogs, and it may affect their athletic performance and quality of life. The intra-articular administration of analgesic/antinflammatory drugs is a common practice in veterinary medicine, for both lameness diagnosis and joint pain management. It is used either perioperatively, such as in animals undergoing arthroscopy/arthrotomy, and in osteoarthritic animals. However, evidence regarding efficacy and safety of each drug is limited, and controversies persist in these areas. In particular, it is often uncertain whether a defined treatment is effective by simply relieving the symptomatic pain associated with the joint disease, or whether it has a positive effect on the joint environment. Moreover, there is still much hesitation about treatments for joint diseases, related to the time of their application for the best outcome, and to any possible deleterious side effects. This article includes a review of the literature concerning the main analgesic/antinflammatory drugs used intra-articularly for managing acute and chronic joint pain/inflammation in dogs and horses. Three main issues for each class of drugs are considered, including clinical efficacy, pharmacokinetics, and local cytotoxic effects.
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Affiliation(s)
- Alessandra Di Salvo
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy; Department of Veterinary Medicine, Research Center on Animal Pain, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy
| | - Elisabetta Chiaradia
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy
| | - Sara Nannarone
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy; Department of Veterinary Medicine, Research Center on Animal Pain, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy.
| | - Giorgia Della Rocca
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy; Department of Veterinary Medicine, Research Center on Animal Pain, University of Perugia, Via San Costanzo, 4, 06126 Perugia, Italy
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Kearney CM, Korthagen NM, Plomp SGM, Labberté MC, de Grauw JC, van Weeren PR, Brama PAJ. Treatment effects of intra-articular triamcinolone acetonide in an equine model of recurrent joint inflammation. Equine Vet J 2020; 53:1277-1286. [PMID: 33280164 DOI: 10.1111/evj.13396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/17/2020] [Accepted: 11/19/2020] [Indexed: 01/15/2023]
Abstract
BACKGROUND Intra-articular triamcinolone acetonide is a widely used treatment for joint inflammation despite limited scientific evidence of its efficacy. OBJECTIVES To investigate if intra-articular triamcinolone acetonide has sustained anti-inflammatory effects using an equine model of repeated joint inflammation. STUDY DESIGN Randomised controlled experimental study. METHOD For three consecutive cycles 2 weeks apart, inflammation was induced in both middle carpal joints of eight horses by injecting 0.25 ng lipopolysaccharide (LPS). After the first LPS injection only, treatment with 12 mg triamcinolone acetonide (TA) followed in one randomly assigned joint, while the contralateral joint was treated with sterile saline (control). Clinical parameters (composite welfare scores, joint effusion, joint circumference) were recorded and synovial fluid samples were analysed for various biomarkers (total protein, WBCC; PGE2 ; CCL2; TNFα; MMP; GAGs; C2C; CPII) at fixed timepoints (post injection hours 0, 8, 24, 72 and 168). The effects of time and treatment on clinical and synovial fluid parameters and the presence of time-treatment interactions were tested using a linear mixed model for repeated measures with horse as a random effect, and time and treatment as fixed effects. RESULTS The TA treated joints showed significantly higher peak synovial GAG concentrations (Difference in means 283.1875 µg/mL, 95% CI 179.8, 386.6, P < 0.000), and PGE2 levels (Difference in means 77.8025 pg/mL, 95% CI 21.2, 134.4, P < 0.007) after the first inflammation induction. Significantly lower TP levels were seen with TA treatment after the second induction (Difference in means -7.5 g/L, 95% CI -14.8, -0.20, P < 0.04) . Significantly lower WBCC levels were noted with TA treatment after the first (Difference in means -23.7125 × 109 cells/L, 95% CI -46.7, -0.7, P < 0.04) and second (Difference in means -35.95 × 109 cells/L, 95% CI -59.0, -12.9, P < 0.002) inflammation inductions. Significantly lower general MMP activity was also seen with TA treatment after the second inflammation inductions (Difference in means -51.65 RFU/s, 95% CI -92.4, -10.9, P < 0.01). MAIN LIMITATIONS This experimental study cannot fully reflect natural joint disease. CONCLUSIONS In this model, intra-articular TA seems to have some anti-inflammatory activity (demonstrated by reductions in TP, WBCC and general MMP activity) up to 2 weeks post treatment but not at 4 weeks. This anti-inflammatory effect appeared to outlast a shorter-lived, potentially detrimental effect illustrated by increased synovial GAG and PGE2 levels after the first induction.
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Affiliation(s)
- Clodagh M Kearney
- UCD School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Nicoline M Korthagen
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Saskia G M Plomp
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Margot C Labberté
- UCD School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - Janny C de Grauw
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - P R van Weeren
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Pieter A J Brama
- UCD School of Veterinary Medicine, University College Dublin, Dublin, Ireland
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Abd El-Rahman GI, Behairy A, Elseddawy NM, Batiha GES, Hozzein WN, Khodeer DM, M. Abd-Elhakim Y. Saussurea lappa Ethanolic Extract Attenuates Triamcinolone Acetonide-Induced Pulmonary and Splenic Tissue Damage in Rats via Modulation of Oxidative Stress, Inflammation, and Apoptosis. Antioxidants (Basel) 2020; 9:antiox9050396. [PMID: 32397156 PMCID: PMC7278611 DOI: 10.3390/antiox9050396] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022] Open
Abstract
Background: In this era, worldwide interest has been directed towards using natural antioxidants to guard against drug side effects. Saussurea lappa is a famous medicinal plant with many biologically active compounds. Triamcinolone acetonide (TA) is an extensively used glucocorticoid. Hence, this study explored, for the first time, the possible beneficial effects of S. lappa ethanolic extract on TA-induced oxidative damage in the lung and spleen of rats. Methods: Five experimental groups were used: control group, S. lappa-treated group (600 mg/kg/day, orally), TA-treated group (40 mg/kg/twice/week I/P), S. lappa + TA co-treated group, and S. lappa/TA prophylactic group. Results: TA exposure significantly induced leukocytosis and neutrophilia. In addition, TA significantly reduced the levels of C-reactive protein, interleukin-12, tumor necrosis factor α, and immunoglobulins. Lung Caspase-3 overexpression and splenic CD8+ downregulation were also noted in the TA group. TA treatment significantly increased malondialdehyde concentration but reduced superoxide dismutase and glutathione peroxidase activities. S. lappa counteracted the TA oxidative and apoptotic effects. The best results were recorded in the prophylactic group. Conclusions:S. lappa has a remarkable protective effect via its anti-inflammatory, anti-apoptotic, and antioxidant capacity. Thus, it could be a candidate as a natural antioxidant to face glucocorticoid’s harmful side effects.
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Affiliation(s)
- Ghada I. Abd El-Rahman
- Department of Clinical Pathology, Faculty of Veterinary medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Amany Behairy
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Nora M. Elseddawy
- Department of Pathology, Faculty of Veterinary medicine, Zagazig University, Zagazig 44519 Egypt;
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt;
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-13, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Wael N. Hozzein
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Dina M. Khodeer
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt;
| | - Yasmina M. Abd-Elhakim
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
- Correspondence:
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Ekstrand C, Bondesson U, Giving E, Hedeland M, Ingvast-Larsson C, Jacobsen S, Löfgren M, Moen L, Rhodin M, Saetra T, Ranheim B. Disposition and effect of intra-articularly administered dexamethasone on lipopolysaccharide induced equine synovitis. Acta Vet Scand 2019; 61:28. [PMID: 31221173 PMCID: PMC6585085 DOI: 10.1186/s13028-019-0464-2] [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: 08/14/2018] [Accepted: 06/13/2019] [Indexed: 11/16/2022] Open
Abstract
Background Dexamethasone is used for the intra-articular route of administration in management of aseptic arthritis in horses. Despite its widespread use there is very little quantitative data of the disposition and response to dexamethasone. The aim of this study was to investigate and describe the synovial fluid and plasma dexamethasone concentration over time and to explore the relation between synovial fluid concentration and response using clinical endpoints as response biomarkers after IA injection of dexamethasone disodium salt solution in an equine model of synovitis. Results Inflammation was induced in the radiocarpal joint of six horses by injection of 2 ng lipopolysaccharide (LPS). Two hours later either saline or dexamethasone was injected in the same joint in a two treatment cross over design. Each horse was treated once with one of the six doses dexamethasone used (0.01, 0.03, 0.1, 0.3, 1 or 3 mg) and once with saline. Dexamethasone was quantified by means of UHPLC–MS/MS. Dexamethasone disposition was characterised by means of a non-linear mixed effects model. Lameness was evaluated both objectively with an inertial sensor based system and subjectively scored using a numerical scale (0–5). Joint circumference, skin temperature over the joint and rectal temperature were also recorded. The LPS-challenge induced lameness in all horses with high inter-individual variability. Dexamethasone significantly decreased lameness compared with saline. Other variables were not statistically significant different between treatments. Objective lameness scoring was the most sensitive method used in this study to evaluate the lameness response. A pharmacokinetic/pharmacodynamic model was successfully fitted to experimental dexamethasone and lameness data. The model allowed characterization of the dexamethasone synovial fluid concentration–time course, the systemic exposure to dexamethasone after intra-articular administration and the concentration–response relation in an experimental model of synovitis. Conclusions The quantitative data improve the understanding of the pharmacology of dexamethasone and might serve as input for future experiments and possibly contribute to maintain integrity of equine sports.
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Bessonnat A, Picotte K, Lavoie JP. Intra-articular triamcinolone acetonide improves lung function in horses with severe asthma. Equine Vet J 2019; 52:131-135. [PMID: 31006122 DOI: 10.1111/evj.13128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 04/11/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Locally administered corticosteroids are commonly used to treat joint diseases in sport and racehorses. As they are also the most potent drugs for the treatment of equine asthma, we hypothesised that the intra-articular corticosteroids used to treat joint diseases also improve the lung function in horses with severe asthma, thus potentially delaying the diagnosis of this common lung condition. OBJECTIVES To compare the effects of intra-articular (IA) and intramuscular (IM) triamcinolone acetonide (TA) on lung function in horses with severe asthma. STUDY DESIGN Randomised and controlled experiment on asthma-prone research animals. METHODS Horses with severe asthma in clinical exacerbation were given either 20 mg of TA in both tarsocrural joints (n = 5; 40 mg/horse) or 40 mg of TA intramuscularly (n = 5). Lung function and TA serum concentrations were measured weekly for 35 days. TA serum concentrations were also evaluated on day 3. RESULTS The pulmonary resistance (RL ) and elastance (EL ) values decreased by day 7 in the IA group (P<0.0001 and P = 0.003, respectively) and by day 14 in the IM group (P = 0.002 and 0.03, respectively). Lung function was improved up to days 21 and 28 in the IA and IM groups, respectively, when compared with baseline. TA serum levels were below the quantification limit (100 pg/ml) for 4 and 3 of the 5 horses in the IA and IM groups, respectively, on day 7. The area under the curve for RL , EL and the serum concentrations of TA were similar in both groups. MAIN LIMITATIONS The response of horses with severe asthma might differ from that of high-performance horses with mild/moderate asthma. CONCLUSIONS Intra-articular administration of TA improves lung function in horses with severe asthma, an effect that persists when TA serum concentration is below the quantification level that is employed as a threshold by the International Association of Racing Commissioners.
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Affiliation(s)
- A Bessonnat
- Department of Clinical Sciences, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Quebec, Canada
| | - K Picotte
- Department of Clinical Sciences, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Quebec, Canada
| | - J P Lavoie
- Department of Clinical Sciences, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Quebec, Canada
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18
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Ultrasound-guided approach to the cervical articular process joints in horses: a validation of the technique in cadavers. Vet Comp Orthop Traumatol 2017; 30:165-171. [DOI: 10.3415/vcot-16-09-0139] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/06/2016] [Indexed: 11/17/2022]
Abstract
Summary
Objectives: To compare accuracy of the ultrasound-guided craniodorsal (CrD) approach with the dorsal (D) approach to the cervical articular process joints, and to evaluate the effect of the transducer, needle gauge, and operator experience.
Methods: Cervical articular process joints from 14 cadaveric neck specimens were injected using either a D or CrD approach, a linear (13 MHx) or microconvex transducer (10 MHz), and an 18 or 20 gauge needle, by an experienced or inexperienced operator. Injectate consisted of an iodinated contrast material solution. Time taken for injection, number of redirects, and retrieval of synovial fluid were recorded. Accuracy was assessed using a scoring system for contrast seen on computed tomography (CT).
Results: The successful performance of intraarticular injections of contrast detected by CT using the D (61/68) and CrD (57/64) approaches was comparable. No significant effect of approach, transducer or needle gauge was observed on injection accuracy, time taken to perform injection, or number of redirects. The 18 gauge needle had a positive correlation with retrieval of synovial fluid. A positive learning curve was observed for the inexperienced operator.
Clinical relevance: Both approaches to the cervical articular process joints were highly accurate. Ultrasound-guided injection of the cervical articular process joints is an easilylearnt technique for an inexperienced veterinarian. Either approach may be employed in the field with a high level of accuracy, using widely available equipment.
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19
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Knych HK, Stanley SD, Harrison LM, Mckemie DS. Pharmacokinetics of betamethasone in plasma, urine, and synovial fluid following intra-articular administration to exercised thoroughbred horses. Drug Test Anal 2017; 9:1385-1391. [PMID: 28117560 DOI: 10.1002/dta.2170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 01/20/2017] [Accepted: 01/21/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Heather K. Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
- Department of Veterinary Molecular Biosciences, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
| | - Scott D. Stanley
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
- Department of Veterinary Molecular Biosciences, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
| | | | - Daniel S. Mckemie
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; 620 West Health Sciences Drive Davis CA 95616 USA
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20
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Knych HK, Blea JA, Arthur RM, Overly LR, McIlwraith CW. Clearance of corticosteroids following intra-articular administration of clinical doses to racehorses. EQUINE VET EDUC 2016. [DOI: 10.1111/eve.12532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H. K. Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory; School of Veterinary Medicine; University of California; Davis USA
- Department of Veterinary Molecular Biosciences; School of Veterinary Medicine; University of California; Davis USA
| | - J. A. Blea
- Von Bluecher Blea Hunkin Inc.; Sierra Madre, California USA
| | - R. M. Arthur
- School of Veterinary Medicine; University of California; Davis USA
| | - L. R. Overly
- Equine Sports Medicine LRO Inc; Cypress California USA
| | - C. W. McIlwraith
- Equine Orthopaedic Research Center; Department of Clinical Sciences; College of Veterinary Medicine and Biomedical Sciences; Colorado State University; Fort Collins USA
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21
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Knych HK, Vidal MA, Chouicha N, Mitchell M, Kass PH. Cytokine, catabolic enzyme and structural matrix gene expression in synovial fluid following intra-articular administration of triamcinolone acetonide in exercised horses. Equine Vet J 2016; 49:107-115. [PMID: 26518341 DOI: 10.1111/evj.12531] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 10/17/2015] [Indexed: 01/07/2023]
Abstract
REASON FOR PERFORMING STUDY The frequent use of intra-articular triamcinolone acetonide (TA) in performance horses warrants further study of the duration of as well as the beneficial and detrimental effects on gene expression associated with administration. OBJECTIVES To assess the effects of intra-articular administration of TA on the expression of selected anti- and proinflammatory and structural matrix genes following its administration into joints of exercised Thoroughbred horses and to correlate these effects with plasma and synovial fluid drug concentrations. STUDY DESIGN Block design experiment. METHODS Eight exercised horses received a single intra-articular administration of 9 mg of TA. Synovial fluid samples were collected from the treated and contralateral joints prior to and up to 49 days following drug administration. Microarray and quantitative reverse transcription polymerase chain reaction analysis were used to assess changes in expression levels of various inflammatory and structural genes post drug administration. RESULTS Drug concentrations in plasma and synovial fluid, were no longer quantifiable by 6 and 28 days following drug administration respectively. In total, the expression level of 5490 genes were significantly altered on micro array analysis, following intra-articular TA administration. Of the genes selected for further study by quantitative reverse transcription polymerase chain reaction analysis, significant changes in inflammatory genes (annexin type 1, cyclooxygenase-1 and tumour necrosis factor stimulated gene 6) and structural genes (collagen and aggrecan) were noted. CONCLUSIONS This study supports the use of synovial fluid as a biological matrix for studying the effects of corticosteroids on gene expression. For the majority of genes studied the effects on expression relative to baseline for both inflammatory and matrix genes were prolonged relative to plasma and synovial fluid TA concentrations. Downregulation of collagen gene expression warrants the careful use of TA in horses.
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Affiliation(s)
- H K Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine, University of California, Davis, USA.,Department of Veterinary Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, USA
| | - M A Vidal
- Department of Surgery and Radiology, School of Veterinary Medicine, University of California, Davis, USA
| | - N Chouicha
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine, University of California, Davis, USA
| | - M Mitchell
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine, University of California, Davis, USA
| | - P H Kass
- Department of Health and Reproduction, School of Veterinary Medicine, University of California, Davis, USA
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22
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Knych HK, Harrison LM, White A, McKemie DS. Disposition of isoflupredone acetate in plasma, urine and synovial fluid following intra-articular administration to exercised Thoroughbred horses. Drug Test Anal 2015; 8:141-7. [DOI: 10.1002/dta.1834] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 03/18/2015] [Accepted: 06/08/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Heather K. Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; Davis 95616 CA USA
- Department of Veterinary Molecular Biosciences, School of Veterinary Medicine; University of California; Davis 95616 CA USA
| | | | - Alexandria White
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; Davis 95616 CA USA
| | - Daniel S. McKemie
- K.L. Maddy Equine Analytical Chemistry Laboratory, School of Veterinary Medicine; University of California; Davis 95616 CA USA
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23
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Vandeweerd JM, Zhao Y, Nisolle JF, Zhang W, Zhihong L, Clegg P, Gustin P. Effect of corticosteroids on articular cartilage: have animal studies said everything? Fundam Clin Pharmacol 2015. [DOI: 10.1111/fcp.12137] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jean-Michel Vandeweerd
- Integrated Veterinary Research Unit (IVRU); Namur Research Institute for Life Sciences (NARILIS); University of Namur; Rue de Bruxelles 61 5000 Namur Belgium
| | - Yang Zhao
- Integrated Veterinary Research Unit (IVRU); Namur Research Institute for Life Sciences (NARILIS); University of Namur; Rue de Bruxelles 61 5000 Namur Belgium
- Shanghai Jiaotong University; School of Medicine; 280, South Chongqing road, 200025 Shanghai China
- Service de Pharmacologie-Pharmacothérapie-Toxicologie; Département des Sciences Fonctionnelles, Faculté de Médecine Vétérinaire; Université de Liège, Boulevard de Colonster B41; B-4000 Liège Belgique
| | - Jean-François Nisolle
- Département d'imagerie médicale; Centre Hospitalier Universitaire Mont Godinne-Dinant, Avenue Docteur Gaston-Therasse 1; 5530 Yvoir Belgique
| | - Wenhui Zhang
- Shanghai Jiaotong University; School of Medicine; 280, South Chongqing road, 200025 Shanghai China
| | - Liu Zhihong
- Département d'imagerie médicale; Centre Hospitalier Universitaire Mont Godinne-Dinant, Avenue Docteur Gaston-Therasse 1; 5530 Yvoir Belgique
- Orthopaedics Department, Ruijin Hospital; Shanghai Jiaotong University; School of Medicine, 197, Rui Jin Er Road; 200025 Shanghai China
| | - Peter Clegg
- Department of Musculoskeletal Biology; Faculty of Health and Life Sciences, University of Liverpool, Leahurst Campus; CH64 7TE Neston UK
| | - Pascal Gustin
- Service de Pharmacologie-Pharmacothérapie-Toxicologie; Département des Sciences Fonctionnelles, Faculté de Médecine Vétérinaire; Université de Liège, Boulevard de Colonster B41; B-4000 Liège Belgique
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Agrawal K, Ebel JG, Bischoff K. A rapid screen for four corticosteroids in equine synovial fluid. J Anal Toxicol 2014; 38:272-9. [PMID: 24713534 DOI: 10.1093/jat/bku030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Most antidoping method development in the equine industry has been for plasma and urine, though there has been recent interest in the analysis of synovial fluid for evidence of doping by intra-articular corticosteroid injection. Published methods for corticosteroid analysis in synovial fluid are primarily singleplex methods, do not screen for all corticosteroids of interest and are not adequately sensitive. The purpose of this study is to develop a rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS-MS) screening method for the detection of four of the most common intra-articularly administered corticosteroids--betamethasone, methylprednisolone, methylprednisolone acetate and triamcinolone acetonide. Sample preparation consisted of protein precipitation followed by a basified liquid-liquid extraction. LC-MS-MS experiments consisted of a six-min isocratic separation using a Phenomenex Polar-RP stationary phase and a mobile phase consisting of 35% acetonitrile, 5 mM ammonium acetate and 0.1% formic acid in nanopure water. The detection system used was a triple quadrupole mass analyzer with thermospray ionization, and compounds were identified using selective reaction monitoring. The method was validated to the ISO/IEC 17025 standard, and real synovial fluid samples were analyzed to demonstrate the application of the method in an antidoping context. The method was highly selective for the four corticosteroids with limits of detection of 1-3 ng/mL. The extraction efficiency was 50-101%, and the matrix effects were 14-31%. These results indicate that the method is a rapid and sensitive screen for the four corticosteroids in equine synovial fluid, fit for purpose for equine antidoping assays.
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Affiliation(s)
- Karan Agrawal
- 1Department of Forensic and Analytical Science, King's College London, London, UK
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25
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Wright S. Highlights of recent clinically relevant papers. EQUINE VET EDUC 2013. [DOI: 10.1111/eve.12074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Knych HK, Harrison LM, Casbeer HC, McKemie DS. Disposition of methylprednisolone acetate in plasma, urine, and synovial fluid following intra-articular administration to exercised thoroughbred horses. J Vet Pharmacol Ther 2013; 37:125-32. [DOI: 10.1111/jvp.12070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 06/20/2013] [Indexed: 11/30/2022]
Affiliation(s)
- H. K. Knych
- K.L. Maddy Equine Analytical Chemistry Laboratory; School of Veterinary Medicine; University of California; Davis CA USA
- Department of Veterinary Molecular Biosciences; School of Veterinary Medicine; University of California; Davis CA USA
| | | | - H. C. Casbeer
- K.L. Maddy Equine Analytical Chemistry Laboratory; School of Veterinary Medicine; University of California; Davis CA USA
| | - D. S. McKemie
- K.L. Maddy Equine Analytical Chemistry Laboratory; School of Veterinary Medicine; University of California; Davis CA USA
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