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Taylor SD, Serpa PBS, Santos AP, Hart KA, Vaughn SA, Moore GE, Mukhopadhyay A, Page AE. Effects of intravenous administration of peripheral blood-derived mesenchymal stromal cells after infusion of lipopolysaccharide in horses. Vet Med (Auckl) 2022; 36:1491-1501. [PMID: 35698909 PMCID: PMC9308407 DOI: 10.1111/jvim.16447] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 05/04/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND A systemic and dysregulated immune response to infection contributes to morbidity and mortality associated with sepsis. Peripheral blood-derived mesenchymal stromal cells (PB-MSC) mitigate inflammation in animal models of sepsis. Allogeneic PB-MSC administered IV to horses is well-tolerated but therapeutic benefits are unknown. HYPOTHESIS After IV lipopolysaccharide (LPS) infusion, horses treated with PB-MSC would have less severe clinical signs, clinicopathological abnormalities, inflammatory cytokine gene expression, and oxidative stress compared to controls administered a placebo. ANIMALS Sixteen horses were included in this study. METHODS A randomized placebo-controlled experimental trial was performed. Sixteen healthy horses were assigned to 1 of 2 treatment groups (1 × 109 PB-MSC or saline placebo). Treatments were administered 30 minutes after completion of LPS infusion of approximately 30 ng/kg. Clinical signs, clinicopathological variables, inflammatory cytokine gene expression, and oxidative stress markers were assessed at various time points over a 24-hour period. RESULTS A predictable response to IV LPS infusion was observed in all horses. At the dose administered, there was no significant effect of PB-MSC on clinical signs, clinicopathological variables, or inflammatory cytokine gene expression at any time point. Antioxidant potential was not different between treatment groups, but intracellular ROS increased over time in the placebo group. Other variables that changed over time were likely due to effects of IV LPS infusion. CONCLUSIONS AND CLINICAL IMPORTANCE Administration of allogeneic PB-MSC did not cause clinically detectable adverse effects in healthy horses. The dose of PB-MSC used here is unlikely to exert a beneficial effect in endotoxemic horses.
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Affiliation(s)
- Sandra D Taylor
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Priscila B S Serpa
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Andrea P Santos
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Kelsey A Hart
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Sarah A Vaughn
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - George E Moore
- Department of Veterinary Administration, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Abhijit Mukhopadhyay
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Allen E Page
- Gluck Equine Research Center, College of Agriculture, Food and Environment, University of Kentucky, Lexington, Kentucky, USA
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Leise BS, Fugler LA. Laminitis Updates: Sepsis/Systemic Inflammatory Response Syndrome-Associated Laminitis. Vet Clin North Am Equine Pract 2021; 37:639-656. [PMID: 34782098 DOI: 10.1016/j.cveq.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Sepsis or systemic inflammatory response syndrome (SIRS) -associated laminitis is a sequela to primary inflammatory conditions (eg, colitis, ischemic intestinal injury, pneumonia, metritis) and results from a dysregulated systemic inflammatory response that ultimately affects the digital lamellae. Local chemokine production, leukocyte migration, and proinflammatory mediator production occur within the lamellae that can lead to catastrophic lamellar failure. Controlling the primary disease, providing supportive care and anti-inflammatory therapy, applying digital cryotherapy, and providing mechanical support are cornerstones to the prevention of sepsis/SIRS-associated laminitis. Novel therapies targeting specific signaling pathways may provide additional therapeutic options in the future.
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Affiliation(s)
- Britta Sigrid Leise
- Department of Veterinary Clinical Sciences, Louisiana State University, School of Veterinary Medicine, Baton Rouge, LA 70803, USA.
| | - Lee Ann Fugler
- Department of Veterinary Clinical Sciences, Louisiana State University, School of Veterinary Medicine, Baton Rouge, LA 70803, USA
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Anderson MJ, Ibrahim AS, Cooper BR, Woolcock AD, Moore GE, Taylor SD. Effects of administration of ascorbic acid and low-dose hydrocortisone after infusion of sublethal doses of lipopolysaccharide to horses. J Vet Intern Med 2020; 34:2710-2718. [PMID: 33026127 PMCID: PMC7694830 DOI: 10.1111/jvim.15896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 01/07/2023] Open
Abstract
Background Sepsis is associated with ascorbic acid (AA) depletion and critical illness‐related corticosteroid insufficiency (CIRCI) in humans. Hypotheses Intravenous infusion of lipopolysaccharide (LPS) would (a) decrease endogneous AA concentrations, (b) induce CIRCI and (c) administration of a combination of AA and hydrocortisone (HC) would have decreased indices of inflammation compared to either drug alone. Animals Thirty‐two healthy horses. Methods Randomized placebo‐controlled experimental trial. Horses were assigned to 1 of 4 groups (saline, AA and HC, AA only, or HC only). Treatments were administered 1 hour after completion of LPS infusion. Clinical signs, clinicopathological variables, pro‐inflammatory cytokine gene expression and production, and plasma AA concentrations were assessed at various time points. Serum cortisol concentrations and ACTH stimulation tests were used to detect CIRCI. Results There was no effect of drug on clinical signs or pro‐inflammatory cytokine gene expression or production compared to controls at any time point. Administration of AA was associated with higher blood neutrophil counts 6 hours after LPS infusion (11.01 ± 1.02 K/μl) compared to other groups (8.99 ± 0.94 K/μL; P < .009). Adminstration of HC was associated with higher blood neutrophil counts 12 hours after LPS infusion (10.40 ± 0.75 K/μl) compared to other groups (6.88 ± 0.68 K/μl; P < .001). Serum cortisol increased from 5.11 ± 1.48 μg/dL before LPS administration to 9.59 ± 1.83 μg/dL 1 h after completion of LPS infusion (T1) without an effect of treatment (P = 0.59). Conclusions and Clinical Importance Ascorbic acid and HC appeared to protect against LPS‐induced neutrophil depletion and could be considered as adjunctive therapy in horses with endotoxemia.
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Affiliation(s)
- Melinda J Anderson
- Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Alina S Ibrahim
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Bruce R Cooper
- Bindley Bioscience Center, Purdue University, West Lafayette, Indiana, USA
| | - Andrew D Woolcock
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - George E Moore
- Department of Veterinary Administration, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
| | - Sandra D Taylor
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Purdue University, West Lafayette, Indiana, USA
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Aamer HG, El-Ashker MR, Nour EM, Wafa EW, Youssef MA. Sepsis-Induced Acute Kidney Injury in Equine: Current Knowledge and Future Perspectives. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2016.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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General Systemic States. Vet Med (Auckl) 2017. [PMCID: PMC7195945 DOI: 10.1016/b978-0-7020-5246-0.00004-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Werners AH. Treatment of endotoxaemia and septicaemia in the equine patient. J Vet Pharmacol Ther 2016; 40:1-15. [PMID: 27452161 DOI: 10.1111/jvp.12329] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 05/02/2016] [Indexed: 12/27/2022]
Abstract
Endotoxins, constituents of the cell wall of gram-positive and gram-negative bacteria, regularly result in severe illness and death in horses. In endotoxaemia, these constituents are present in the systemic circulation; in septicaemia, whole microbes invade normally sterile parts of the body. Interaction of these endotoxins with pathogen recognition receptors leads to an inflammatory response that cannot always be sufficiently contained and hence needs direct treatment. Over the last decennia, our understanding of the pathophysiology of endotoxaemia and septicaemia has significantly increased. Based on improved understanding of the interaction between receptors and endotoxins as well as the subsequent downstream signalling pathways, new therapeutic targets have been identified in laboratory animal species and humans. Important species differences in the recognition of endotoxins and pathogens by their receptors as well as the inflammatory response to receptor activation hamper extrapolation of this information to the horse (and other species). Historically, horses with endotoxaemia and septicaemia have been treated mainly symptomatically and supportively. Based on the identified therapeutic targets, this review describes the current knowledge of the treatment for endotoxaemia and septicaemia in the horse with reference to the findings in other animal species and humans.
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Affiliation(s)
- A H Werners
- Department of Anatomy, Physiology and Pharmacology, School of Veterinary Medicine, St. George's University, True Blue Campus, St. George's, Grenada, West-Indies
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Characteristics of frozen epididymal spermatozoa from stallions that died 12 to 36 hours after colic surgery. Theriogenology 2016; 85:345-50. [DOI: 10.1016/j.theriogenology.2015.09.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 09/03/2015] [Accepted: 09/03/2015] [Indexed: 11/21/2022]
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Wong DM, Sponseller BA, Alcott CJ, Agbedanu PN, Wang C, Hsu WH. Effects of intravenous administration of polymyxin B in neonatal foals with experimental endotoxemia. J Am Vet Med Assoc 2013; 243:874-81. [DOI: 10.2460/javma.243.6.874] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tadros EM, Frank N. Effects of continuous or intermittent lipopolysaccharide administration for 48 hours on the systemic inflammatory response in horses. Am J Vet Res 2013; 73:1394-402. [PMID: 22924721 DOI: 10.2460/ajvr.73.9.1394] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether the method of lipopolysaccharide (LPS) administration (intermittent vs continuous) affects the magnitude and duration of the systemic inflammatory response in horses and whether prolonged (48 hours) endotoxemia induces laminitis. ANIMALS 12 healthy adult horses (10 mares and 2 geldings). PROCEDURES Horses were randomly assigned to receive LPS (total dose, 80 μg; n = 4) or saline (0.9% NaCl) solution (80 mL/h; 4) via constant rate infusion or 8 bolus IV injections of LPS (10 μg, q 6 h;4) during a 48-hour period. Physical examinations were performed every 4 hours, inflammatory cytokine gene expression was determined for blood samples obtained every 8 hours, and IV glucose tolerance tests were performed. RESULTS All LPS-treated horses had signs of depression and mild colic; those signs abated as the study progressed. Administration of LPS increased expression of interleukin-1β, interleukin-6, and interleukin-8, but results were not significantly different between LPS treatment groups. Cytokine expression was significantly higher on the first day versus the second day of LPS treatment. Interleukin-1β expression was positively correlated with rectal temperature and expression of other cytokines. Glucose and insulin dynamics for both LPS groups combined did not differ significantly from those of the saline solution group. Signs of laminitis were not detected in any of the horses. CONCLUSIONS AND CLINICAL RELEVANCE Horses developed LPS tolerance within approximately 24 hours after administration was started, and the method of LPS administration did not affect the magnitude or duration of systemic inflammation. Laminitis was not induced in horses.
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Affiliation(s)
- Elizabeth M Tadros
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37996, USA
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Declue AE, Johnson PJ, Day JL, Amorim JR, Honaker AR. Pathogen associated molecular pattern motifs from Gram-positive and Gram-negative bacteria induce different inflammatory mediator profiles in equine blood. Vet J 2011; 192:455-60. [PMID: 21974971 DOI: 10.1016/j.tvjl.2011.09.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 08/30/2011] [Accepted: 09/02/2011] [Indexed: 01/09/2023]
Abstract
Although the incidence of Gram-positive infection in horses is increasing, little is known about differences in inflammatory response between Gram-positive and Gram-negative organisms in this species. Equine blood was stimulated with components of both Gram-negative and Gram-positive organisms: lipopolysaccharide (LPS); lipoteichoic acid (LTA); peptidoglycan (PG); with combinations of LPS, LTA and PG; and with phosphate buffered saline (control). LPS, LTA and PG stimulated tumor necrosis factor (TNF) and interleukin (IL)-6 production but only LTA and PG stimulated IL-1β production from whole blood. LPS was a more potent inducer of TNF than either LTA or PG and both LPS and LTA were more potent inducers of IL-6 than PG. Generally, combinations of pathogen associated molecular patterns (PAMPs) did not elicit greater inflammatory mediator responses when compared to LPS, LTA or PG alone, although there was some synergism between the effects of LPS and LTA. The repertoire of inflammatory mediators provoked by Gram-positive vs. Gram-negative motifs is thus distinctly different. As novel immunomodulatory therapies are developed for use in the horse, care should be exercised when applying treatments for endotoxemia to animals with Gram-positive infections given the different cytokine response profiles.
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Affiliation(s)
- A E Declue
- Comparative Internal Medicine Laboratory, College of Veterinary Medicine, University of Missouri, 900 East Campus Drive, Columbia, MO 65211, USA.
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Oliveira-Filho JP, Badial PR, Cunha PHJ, Peiró JR, Araújo JP, Divers TJ, Winand NJ, Borges AS. Lipopolysaccharide infusion up-regulates hepcidin mRNA expression in equine liver. Innate Immun 2011; 18:438-46. [PMID: 21926164 DOI: 10.1177/1753425911420181] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Hepcidin has been found to be the key regulator of iron metabolism that leads to hypoferremia during inflammation. Recent work has shown that equine hepcidin is predominantly expressed in the liver of horses. In this study, hepcidin gene expression was determined in the liver and bone marrow of six healthy horses after iv infusion of Escherichia coli O55:B5 LPS. The IL-6 gene expression was also determined in liver and bone marrow samples. Clinical and laboratory evaluations were measured at multiple time points between 0 and 240 h post-LPS infusion (PI). Liver and bone marrow biopsies were taken immediately before (baseline) and at 6 and 18 h PI. In response to endotoxin infusion, all horses showed characteristic clinical signs of endotoxemia. Plasma iron concentration was decreased significantly from the pre-infusion level at 8 h PI. Hypoferremia peak was observed at 12 h and returned to normal levels at 30 h PI. Relative real-time RT-PCR analysis showed that liver hepcidin and IL-6 mRNA expression was up-regulated at 6 h PI. Bone marrow hepcidin relative expression was not influenced by LPS infusion. In another experiment, equine monocyte cultures were stimulated with LPS (1 µg/ml). Monocyte hepcidin and IL-6 gene expression was significantly induced after 2 h of LPS stimulus and returned to baseline levels thereafter. The present study describes that, in horses, LPS infusion up-regulates hepatic hepcidin mRNA expression resulting in early observed hypoferremia and suggests that hepcidin may act as an acute-phase protein in horses.
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Affiliation(s)
- José P Oliveira-Filho
- Department of Veterinary Clinical Science, School of Veterinary Medicine and Animal Science, UNESP - Univ Estadual Paulista, Botucatu, Brazil
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Baumwart CA, Doherty TJ, Schumacher J, Willis RS, Adair HS, Rohrbach BW. Effects of hyperbaric oxygen treatment on horses with experimentally induced endotoxemia. Am J Vet Res 2011; 72:1266-75. [DOI: 10.2460/ajvr.72.9.1266] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cook VL, Holcombe SJ, Gandy JC, Corl CM, Sordillo LM. Ethyl pyruvate decreases proinflammatory gene expression in lipopolysaccharide-stimulated equine monocytes. Vet Immunol Immunopathol 2011; 141:92-9. [DOI: 10.1016/j.vetimm.2011.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 02/15/2011] [Accepted: 02/18/2011] [Indexed: 10/18/2022]
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Divers TJ. Clinical Application of Current Research Findings Toward the Prevention and Treatment of Acute Laminitis in Horses With Systemic Inflammatory Diseases: An Internist’s Perspective. J Equine Vet Sci 2010. [DOI: 10.1016/j.jevs.2010.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peiró J, Barnabé P, Cadioli F, Cunha F, Lima V, Mendonça V, Santana A, Malheiros E, Perri S, Valadão C. Effects of Lidocaine Infusion during Experimental Endotoxemia in Horses. J Vet Intern Med 2010; 24:940-8. [DOI: 10.1111/j.1939-1676.2010.0555.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Tóth F, Frank N, Chameroy KA, Bostont RC. Effects of endotoxaemia and carbohydrate overload on glucose and insulin dynamics and the development of laminitis in horses. Equine Vet J 2010; 41:852-8. [PMID: 20383981 DOI: 10.2746/042516409x479027] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
REASONS FOR PERFORMING STUDY Insulin resistance (IR) is a risk factor for pasture-associated laminitis in equids and alimentary carbohydrate overload may trigger laminitis. Whether glucose metabolism responses to carbohydrate overload are more pronounced in insulin-resistant horses requires further study. HYPOTHESIS Horses pretreated with endotoxin to alter insulin sensitivity differ significantly in their glucose and insulin responses to carbohydrate overload. METHODS Horses (n=24) were divided into 3 groups. A lipopolysaccharide (LPS; n=8) group that received endotoxin as an 8 h 7.5 ng/kg bwt/h i.v. continuous rate infusion, an oligofructose (OF; n=8) group that received an infusion of saline followed by 5 g/kg bwt OF via nasogastric intubation, and a LPS/OF (n=8) group that received LPS followed 16 h later by OF. Glucose and insulin dynamics were evaluated at -24 h and 48 h using the frequently sampled i.v. glucose tolerance test and minimal model analysis. Physical examinations and haematology were performed and the severity of laminitis assessed. RESULTS Horses receiving LPS developed leucopenia and both LPS and OF induced clinical signs consistent with systemic inflammation. Insulin sensitivity significantly decreased (P < 0.001) over time, but responses did not differ significantly among groups. Time (P < 0.001) and treatment x time (P = 0.038) effects were detected for the acute insulin response to glucose, with mean values significantly increasing in LPS and LPS/OF groups, but not the OF group. Five horses in the LPS/OF group developed clinical laminitis compared with 0 and 2 horses in the LPS and OF groups, respectively. CONCLUSIONS Endotoxaemia and carbohydrate overload reduce insulin sensitivity in horses. Endotoxin pretreatment does not affect the alterations in glucose metabolism induced by carbohydrate overload. POTENTIAL RELEVANCE Insulin sensitivity decreases after carbohydrate overload in horses, which may be relevant to the development of pasture-associated laminitis.
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Affiliation(s)
- F Tóth
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996, USA
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Abstract
Endotoxemia is a major cause of morbidity and mortality in horses affected by colic. This article briefly reviews the pathogenesis of endotoxemia in horses with colic, reviews current established treatments, and describes new advances in the treatment of endotoxemia.
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Affiliation(s)
- Gal Kelmer
- Large Animal Department, Koret Veterinary Teaching Hospital, Hebrew University of Jerusalem, Rehovot, Israel.
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Poulin Braim AE, MacDonald MH, Bruss ML, Grattendick KJ, Giri SN, Margolin SB. Effects of intravenous administration of pirfenidone on horses with experimentally induced endotoxemia. Am J Vet Res 2009; 70:1031-42. [DOI: 10.2460/ajvr.70.8.1031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tamasi G, Serinelli F, Consumi M, Magnani A, Casolaro M, Cini R. Release studies from smart hydrogels as carriers for piroxicam and copper(II)–oxicam complexes as anti-inflammatory and anti-cancer drugs. X-ray structures of new copper(II)–piroxicam and –isoxicam complex molecules. J Inorg Biochem 2008; 102:1862-73. [DOI: 10.1016/j.jinorgbio.2008.06.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 06/11/2008] [Accepted: 06/13/2008] [Indexed: 10/21/2022]
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