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Artman JL, Wesolowski LT, Semanchik PL, Isles JK, Norton SA, White-Springer SH. Local and systemic responses to repeated gluteal muscle microbiopsies in mature sedentary horses. J Equine Vet Sci 2024; 136:105070. [PMID: 38642813 DOI: 10.1016/j.jevs.2024.105070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/09/2024] [Accepted: 04/16/2024] [Indexed: 04/22/2024]
Abstract
We aimed to test the hypothesis that repeated muscle collections would impact mitochondrial function, antioxidant status, and markers of inflammation and muscle damage. Twenty-six horses (8 geldings, 18 mares; mean ± SD 9.5 ± 3.5 y) had gluteus medius muscle biopsy samples collected at: 0 and 24h (n=7); 0 and 6h (n = 6); 0, 6, and 12h (n=7); or 0, 6, 12, and 24h (n=6). Blood was collected from all horses every 6h for 72h, starting 24h prior to the 0h muscle collection. Data were analyzed using mixed linear models. Muscle integrative (per mg tissue) electron transfer capacity of complex II decreased (P=0.004) and intrinsic (relative to citrate synthase (CS) activity) LEAK increased (P<0.03) from 0 to 6h but both returned to 0h levels by 12h. Activity of CS was greater at 0 than 12 and 24h (P≤0.02). Serum creatine kinase (CK) activity was similar from -24 through 0h but increased in all horses at 6h and remained elevated through 48h (P<0.05) though not above reference ranges. Whole blood superoxide dismutase activity fluctuated throughout the 72-h collection period (P=0.03) and serum cortisol concentration displayed a circadian pattern (P<0.0001) but neither were altered by muscle collections. No other variable, including muscle mitochondrial capacities and function, blood and muscle antioxidant status and concentrations of select cytokines, and serum amyloid A, differed by time or muscle collection. Repeated gluteal collections had limited short-term or no effect on physiological markers in unstressed, mature horses except serum CK activity, which should be interpreted with caution during repeated tissue collections.
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Affiliation(s)
- Jessica L Artman
- Department of Animal Science, Texas A&M University and AgriLife Research, 2471 TAMU, College Station, TX 77843, USA
| | - Lauren T Wesolowski
- Department of Animal Science, Texas A&M University and AgriLife Research, 2471 TAMU, College Station, TX 77843, USA
| | - Pier L Semanchik
- Department of Animal Science, Texas A&M University and AgriLife Research, 2471 TAMU, College Station, TX 77843, USA
| | - JadaLea K Isles
- Department of Animal Science, Texas A&M University and AgriLife Research, 2471 TAMU, College Station, TX 77843, USA
| | | | - Sarah H White-Springer
- Department of Animal Science, Texas A&M University and AgriLife Research, 2471 TAMU, College Station, TX 77843, USA; Department of Kinesiology and Sport Management, Texas A&M University, 2929 Research Pkwy College Station, TX 77843, USA.
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2
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Suagee-Bedore J, Shost N, Miller C, Grado L, Bechelli J. Age and Body Condition Influence the Post-Prandial Interleukin-1β Response to a High-Starch Meal in Horses. Animals (Basel) 2021; 11:3362. [PMID: 34944138 PMCID: PMC8698138 DOI: 10.3390/ani11123362] [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: 10/20/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 11/21/2022] Open
Abstract
Older horses and those prone to obesity may be at a higher risk for inflammation than younger and leaner counterparts. Previous research indicated a postprandial elevation in plasma concentrations of interleukin-1β (IL-1β), a pro-inflammatory cytokine, after consuming 1.2 g of non-structural carbohydrates/kilogram of body weight. However, these studies utilized horses of mixed age and body condition. The current study evaluated post-prandial IL-1β concentrations in horses specifically comparing lean to over-conditioned and middle aged to older. Our results suggest that at least two weeks of daily consumption of a high non-structural carbohydrate diet is required to induce a post-prandial increase in IL-1β concentrations in younger and leaner horses. In opposition to this, older and over-conditioned horses experience plasma increased on the first day of feeding and thereafter. Feeding management practices of older and over-conditioned individuals should emphasize lower non-structural carbohydrate intakes and further research should elucidate mechanisms of IL-1β activation.
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Affiliation(s)
- Jessica Suagee-Bedore
- School of Agricultural Sciences, College of Science and Engineering Technology, Sam Houston State University, Huntsville, TX 77340, USA;
| | - Nichola Shost
- School of Agricultural Sciences, College of Science and Engineering Technology, Sam Houston State University, Huntsville, TX 77340, USA;
| | - Christian Miller
- Department of Biological Sciences, College of Science and Engineering Technology, Sam Houston State University, Huntsville, TX 77340, USA; (C.M.); (L.G.); (J.B.)
| | - Luis Grado
- Department of Biological Sciences, College of Science and Engineering Technology, Sam Houston State University, Huntsville, TX 77340, USA; (C.M.); (L.G.); (J.B.)
| | - Jeremy Bechelli
- Department of Biological Sciences, College of Science and Engineering Technology, Sam Houston State University, Huntsville, TX 77340, USA; (C.M.); (L.G.); (J.B.)
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Ragno VM, Klein CD, Sereda NS, Uehlinger FD, Zello GA, Robinson KA, Montgomery JB. Morphometric, metabolic, and inflammatory markers across a cohort of client-owned horses and ponies on the insulin dysregulation spectrum. J Equine Vet Sci 2021; 105:103715. [PMID: 34607688 DOI: 10.1016/j.jevs.2021.103715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 06/09/2021] [Accepted: 07/12/2021] [Indexed: 10/20/2022]
Abstract
In human metabolic syndrome and type II diabetes, methylglyoxal (MG), D-lactate, and several cytokines have been recognized as biomarkers of important metabolic and inflammatory processes. Equine metabolic syndrome (EMS) shares many similarities with these human counterparts. The objectives of this cross-sectional study were to compare body condition score (BCS), cresty neck score (CNS), resting insulin, MG, D-lactate, L-lactate, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and monocyte chemoattractant protein-1 (MCP-1) between horses with and without insulin dysregulation, as classified via combined glucose and insulin test (CGIT). 32 client-owned horses were included. History and morphometric data such as BCS and CNS were recorded. Subjects with abnormalities on physical examination or CBC, elevated ACTH or incomplete information were excluded. Baseline serum or plasma concentrations of biomarkers were tested via commercial ELISA or colorimetric assays. Characteristics of insulin dysregulated and insulin sensitive horses were compared by univariate analysis and forward logistic regression. 12 (38%) of the 32 horses were classified as insulin dysregulated. No significant difference between the 2 groups was found for age, BCS, baseline glucose, triglycerides, MG, D-lactate, L-lactate, TNF-α, IL-6, and MCP-1. Baseline insulin was significantly associated with insulin dysregulation in univariate analysis (P = 0.02), but not in the final model. Horses with CNS ≥ 3 had 11.3 times higher odds of having insulin dysregulation (OR 11.3, 95% C.I. 2.04 - 63.08, P = 0.006). In this population, horses with mild-moderate signs of EMS presented similar metabolic and inflammatory profiles to non-insulin dysregulated controls.
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Affiliation(s)
- Valentina M Ragno
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | - Colby D Klein
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Nicole S Sereda
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Fabienne D Uehlinger
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Gordon A Zello
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan Canada
| | - Katherine A Robinson
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Julia B Montgomery
- Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Mitchell S, Bull M, Muscatello G, Chapman B, Coleman NV. The equine hindgut as a reservoir of mobile genetic elements and antimicrobial resistance genes. Crit Rev Microbiol 2021; 47:543-561. [PMID: 33899656 DOI: 10.1080/1040841x.2021.1907301] [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] [Indexed: 10/21/2022]
Abstract
Antibiotic resistance in bacterial pathogens is a growing problem for both human and veterinary medicine. Mobile genetic elements (MGEs) such as plasmids, transposons, and integrons enable the spread of antibiotic resistance genes (ARGs) among bacteria, and the overuse of antibiotics drives this process by providing the selection pressure for resistance genes to establish and persist in bacterial populations. Because bacteria, MGEs, and resistance genes can readily spread between different ecological compartments (e.g. soil, plants, animals, humans, wastewater), a "One Health" approach is needed to combat this problem. The equine hindgut is an understudied but potentially significant reservoir of ARGs and MGEs, since horses have close contact with humans, their manure is used in agriculture, they have a dense microbiome of both bacteria and fungi, and many antimicrobials used for equine treatment are also used in human medicine. Here, we collate information to date about resistance genes, plasmids, and class 1 integrons from equine-derived bacteria, we discuss why the equine hindgut deserves increased attention as a potential reservoir of ARGs, and we suggest ways to minimize the selection for ARGs in horses, in order to prevent their spread to the wider community.
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Affiliation(s)
- Scott Mitchell
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | | | - Gary Muscatello
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | | | - Nicholas V Coleman
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
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Li S, Ding J, Jiang L, Hayat MA, Song Q, Li Y, Zhang X, Zhang J. Dynamic ROS Production and Gene Expression of Heifers Blood Neutrophil in a Oligofructose Overload Model. Front Vet Sci 2020; 7:211. [PMID: 32373641 PMCID: PMC7186304 DOI: 10.3389/fvets.2020.00211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 03/30/2020] [Indexed: 12/21/2022] Open
Abstract
Alimentary oligofructose (OF) overload can induce several diseases in cattle, such as ruminal acidosis, laminitis, and synovitis. The role of blood polymorphonuclear neutrophil (PMN) remains unclear during OF overload. The aim of this study was to investigate the dynamic changes in reactive oxygen species (ROS) production and the expression profile of genes in blood PMN in a model of OF overload. Twelve clinically healthy and non-pregnant Chinese Holstein heifers, aged between 18 and 26 mo, weighing 335–403 kg, BCS (5-point scale) ranges 2.7–3.3 were used for the experiments. OF heifers (n = 6) received 17 g/kg of BW oligofructose dissolved in 2 L/100 kg of BW tap water and the CON heifers (n = 6) received 2 L/100 kg of BW tap water. Blood PMN was isolated for each heifer 0, 6, 12, 18, 24, 36, 48, 60, and 72 h after administration. PMN was analyzed either by endogenous and phorbol myristate acetate (PMA)-induced ROS production or by quantitative real-time PCR. After 12 h, PMA-induced ROS production decreased, which was sustained until 48 h. The expressions of inflammation markers (IL1α, IL1β, IL6, IL10, TNFα, STAT3, TLR4, MMP9, and HP) and eicosanoids (ALOX5, ALOX5AP, and PLA2G4A) were upregulated. The expression of adhesion and migration (CXCR2, CXCL8, CD62L, ITGA4, ITGAM, and ITGB2) in OF heifers was increased compared with CON heifers. The expression of oxidative stress (SOD2 and S100A8) was upregulated, while SOD1 and MPO were downregulated. In metabolism and receptor genes, the expressions of GRα and INSR decreased after 12 h, while Fas increased until 6 h and then decreased at 18 h. The expression of LDHA and PANX1 did not show any differences after OF overload. These findings indicate that OF overload induced systemic activation of PMN, which provides a step toward a better understanding of the role of innate immune responses in response to oral OF administration.
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Affiliation(s)
- Shuaichen Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Jiafeng Ding
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Lihong Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Muhammad Abid Hayat
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Qiaozhi Song
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Yuepeng Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Xianhao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
| | - Jiantao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin, China
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Suagee-Bedore JK, Linden DR, Bennett-Wimbush K, Splan RK. Feeding Grass Hay Before Concentrate Mitigates the Effect of Grain-Based Concentrates on Postprandial Plasma Interleukin-1β. J Equine Vet Sci 2019; 86:102899. [PMID: 32067663 DOI: 10.1016/j.jevs.2019.102899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 12/14/2019] [Accepted: 12/16/2019] [Indexed: 02/06/2023]
Abstract
When fed to horses, high-starch diets elevate plasma concentrations of interleukin-1β (IL-1β) as soon as 1 hour posteating. This increase in IL-β is possibly because of changes in intestinal pH that result from rapid bacterial fermentation of starches and sugars in the digestive tract. The purpose of this research was to investigate the effect of feeding 0.9 kg of grass hay 30 minutes before feeding a concentrate meal on the postprandial rise in IL-1β, compared with control horses receiving the same concentrate without hay first. Six mature geldings were used in a switchback design. Horses were fasted overnight before being offered a concentrate feed that provided 1.2 g/kg bodyweight of nonstructural carbohydrates. Plasma was harvested 30 minutes before hay feeding and 1, 2, 4, 6, and 8 hours postfeeding. Concentrations of IL-1β and d-lactate were analyzed by repeated measures analysis of variance. The hay-first treatment reduced (P = .034) postprandial concentrations of IL-1β at all time points compared with the control horses. An interaction between hour and treatment was detected for mean d-lactate concentrations (P = .037), with lower concentrations in hay-first fed horses at postfeeding hours 1, 2, and 4, compared with control horses. Given these findings, we believe that feeding a small amount of hay before feeding a meal of moderate starch and sugar content reduced the negative effects of rapid starch and sugar fermentation in the equine digestive tract, evidenced by reduced postprandial d-lactate and IL-1β concentrations.
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Affiliation(s)
| | - Daniel R Linden
- Agricultural Technical Institute, The Ohio State University, Wooster, OH
| | | | - Rebecca K Splan
- Department of Animal and Poultry Sciences, Virginia Tech, Middleburg, VA
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Ragno VM, Zello GA, Klein CD, Montgomery JB. From Table to Stable: A Comparative Review of Selected Aspects of Human and Equine Metabolic Syndrome. J Equine Vet Sci 2019; 79:131-138. [PMID: 31405493 DOI: 10.1016/j.jevs.2019.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 06/06/2019] [Accepted: 06/08/2019] [Indexed: 12/18/2022]
Abstract
Obesity data in people and companion animals are depicting a future of increasing morbidity, cost for society, and significant health and welfare concerns. Between 25 and 50% of cats, dogs, and horses in developed countries are overweight or obese, which mirrors the situation in humans. Equine metabolic syndrome (EMS) was named after human metabolic syndrome (MetS), which has about 30 years of lead in research efforts. Even though the complications of the two syndromes seem to grossly differ (cardiac vs. laminitis risk), a number of similar disease mechanisms are worthy of investigation. Since the first EMS consensus statement by the American College of Veterinary Internal Medicine in 2010, numerous studies have confirmed the link between insulin dysregulation and laminitis, even though the mechanisms are not fully understood. After the discovery of the role of adipokines in MetS, evidence about inflammatory mechanisms related to adiposity in rodent models, companion animals, horses, and humans is constantly increasing. Oxidative and dicarbonyl stress have been correlated with insulin dysregulation, obesity, and recently with laminitis. Vascular actions of insulin through nitric oxide, endothelin-1, and other mechanisms are being studied in horses and can provide a better understanding of laminitis pathophysiology. More research is needed on neuropathic mechanisms in insulin-dysregulated horses, which could be important in the pathogenesis of laminitis and laminitic pain. Human literature can provide viable material for novel studies in areas that have received limited attention, in addition to being valuable information for clients about the consequences of unhealthy management of their horses.
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Affiliation(s)
- Valentina M Ragno
- Department of Large Animal Clinical Sciences, WCVM, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada.
| | - Gordon A Zello
- Section of Nutrition, College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon SK S7N 5E5, Canada
| | - Colby D Klein
- Department of Large Animal Clinical Sciences, WCVM, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Julia B Montgomery
- Department of Large Animal Clinical Sciences, WCVM, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
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Grimm P, Pais de Barros J, Julliand V. Impact of diet on bacterial lipopolysaccharides in equine feces and blood. Livest Sci 2018. [DOI: 10.1016/j.livsci.2017.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Feeding DigestaWell Buffer to Horses Alters the Effects of Starch Intake on Blood pH, Lipopolysaccharide, and Interleukin-1β. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2017.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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10
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Elzinga SE, Rohleder B, Schanbacher B, McQuerry K, Barker VD, Adams AA. Metabolic and inflammatory responses to the common sweetener stevioside and a glycemic challenge in horses with equine metabolic syndrome. Domest Anim Endocrinol 2017; 60:1-8. [PMID: 28254632 DOI: 10.1016/j.domaniend.2017.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 01/20/2017] [Accepted: 01/25/2017] [Indexed: 01/08/2023]
Abstract
Extracts derived from the leaves of the stevia plant (stevioside) are commonly used as sweeteners for humans and horses. Stevioside appears to be safe for human consumption, including for individuals with insulin dysregulation. In the horse, the safety or metabolic effects of stevioside on normal animals or on those with metabolic dysfunction are unknown. Furthermore, the inflammatory response to a glycemic challenge or to stevioside in horses is not well defined. Therefore, the objective of this study was to measure the effects of stevioside and a glycemic challenge on insulin, glucose, and inflammatory responses in horses with a common metabolic dysfunction (equine metabolic syndrome or EMS) compared with non-EMS controls. To accomplish this, 15 horses were selected; 8 EMS and 7 age-matched controls. An oral sugar test was performed using Karo corn syrup (karo) or stevioside in a random crossover design. Horses were given 0.15 mL/kg body weight of karo or its equivalent grams of sugar in stevia dissolved in water. Blood samples were collected by jugular venipuncture before administration of either stevia or karo and at 60 and 240 min after administration. Serum was used for glucose and insulin determination and plasma for isolation of peripheral blood mononuclear cells (PBMCs) for inflammatory cytokine analysis via flow cytometry and reverse transcription PCR (RT-PCR). Stevia appeared to stimulate lower glycemic and insulinemic responses when compared to karo, in particular in EMS horses. EMS and control horses had inverse inflammatory responses to administration of either stevia or karo with EMS horses having a proinflammatory response (P ≤ 0.05). These data provide evidence as to why horses with EMS may be predisposed to developing laminitis, potentially as a result of an exaggerated inflammatory response to glycemic and insulinemic responses. Furthermore, the data provide new avenues for exploring mechanisms behind the syndrome, in particular when using a glycemic challenge.
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Affiliation(s)
- S E Elzinga
- M.H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA.
| | - B Rohleder
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, Tennessee, USA
| | - B Schanbacher
- AHDC Endocrinology Laboratory, NYSCVM Cornell University, Ithaca, New York, USA
| | - K McQuerry
- Department of Statistics, University of Kentucky, University of Kentucky, Lexington, Kentucky, USA
| | - V D Barker
- M.H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
| | - A A Adams
- M.H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, Kentucky, USA
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Suagee-Bedore JK, Wagner AL, Girard ID. Validation of the Postprandial Interleukin-1β Response in Horses Using Equine-Specific Antibodies. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2016.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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