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Arnold JE, Camus MS, Freeman KP, Giori L, Hooijberg EH, Jeffery U, Korchia J, Meindel MJ, Moore AR, Sisson SC, Vap LM, Cook JR. ASVCP Guidelines: Principles of Quality Assurance and Standards for Veterinary Clinical Pathology (version 3.0): Developed by the American Society for Veterinary Clinical Pathology's (ASVCP) Quality Assurance and Laboratory Standards (QALS) Committee. Vet Clin Pathol 2020; 48:542-618. [PMID: 31889337 DOI: 10.1111/vcp.12810] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Melinda S Camus
- Department of Pathology, University of Georgia College of Veterinary Medicine, Athens, GA, USA
| | | | - Luca Giori
- Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | - Emma H Hooijberg
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Unity Jeffery
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Jérémie Korchia
- Texas A&M Veterinary Medical Diagnostic Laboratory, College Station, TX, USA
| | | | - A Russell Moore
- Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Sandra C Sisson
- Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Linda M Vap
- Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
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Abstract
Horses with clinical signs of unprovoked or excessive hemorrhage should be evaluated for underlying platelet defects or coagulopathies. This article provides an overview of preliminary screening and definitive tests to assess coagulation and identify hemostatic defects in horses, as well as a review of the hemostatic disorders most frequently encountered in clinical practice.
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Affiliation(s)
- SallyAnne L DeNotta
- Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 Southwest 16th Avenue, Gainesville, FL 32608, USA
| | - Marjory B Brooks
- Comparative Coagulation Laboratory, Animal Health Diagnostic Center, Cornell University, Ithaca, NY 14850, USA.
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Comparison of Refractometric and Biuretic Methods for the Assay of Total Protein in Horse Serum and Plasma Under Various Storage Conditions. J Equine Vet Sci 2018. [DOI: 10.1016/j.jevs.2017.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Goyal VK, Kakade S, Pandey SK, Gothi AK, Nirogi R. Determining the effect of storage conditions on prothrombin time, activated partial thromboplastin time and fibrinogen concentration in rat plasma samples. Lab Anim 2015. [DOI: 10.1177/0023677215597137] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Coagulation parameters are usually included in clinical and preclinical safety studies to evaluate the effect of xenobiotics on the extrinsic or intrinsic pathways of coagulation. The analysis is generally performed at the time of terminal sacrifice where many activities are scheduled. Chances of delay in analysis are likely particularly when blood is collected for coagulation via the abdominal vena cava. This experiment was planned to assess the variations in coagulation parameters caused by delay in analysis as well as by storage conditions. Blood was collected from the posterior vena cava under isoflurane anesthesia, and the plasma was separated immediately. Coagulation parameters were evaluated at 0, 6, 24 and 48 h from the plasma stored at room temperature, as well as plasma stored under refrigerated and freezing conditions. Stability of the analytes in blood was also evaluated under refrigerated conditions for 6 h. All parameters were analyzed using a semi-automated coagulometer. Prothrombin time (PT) was stable under all three storage conditions for up to 6 h. Although statistically significant differences were observed for activated partial thromboplastin time (APTT) at room and refrigeration temperatures for up to 6 h, the difference was clinically non-relevant. Fibrinogen was found to be the most stable parameter that showed consistency in results even up to 48 h under all three storage conditions. Plasma for PT can be stored and analyzed without any significant changes for up to 6 h from the actual blood collection, while fibrinogen level testing can be extended for up to 48 h after collection under any storage condition. For reliable APTT results, plasma samples should be run immediately after collection.
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Affiliation(s)
- Vinod Kumar Goyal
- Discovery Research, Suven Life Sciences Limited, Serene Chambers, Banjara Hills, Hyderabad, India
| | - Somesh Kakade
- Discovery Research, Suven Life Sciences Limited, Serene Chambers, Banjara Hills, Hyderabad, India
| | - Santosh Kumar Pandey
- Discovery Research, Suven Life Sciences Limited, Serene Chambers, Banjara Hills, Hyderabad, India
| | - Anil Kalidas Gothi
- Discovery Research, Suven Life Sciences Limited, Serene Chambers, Banjara Hills, Hyderabad, India
| | - Ramakrishna Nirogi
- Discovery Research, Suven Life Sciences Limited, Serene Chambers, Banjara Hills, Hyderabad, India
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Piccione G, Arfuso F, Quartuccio M, Di Pietro S, Giudice E. Age-Related Developmental Clotting Profile and Platelet Aggregation in Foals Over the First Month of Life. J Equine Vet Sci 2015. [DOI: 10.1016/j.jevs.2014.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bazzano M, Giannetto C, Fazio F, Marafioti S, Giudice E, Piccione G. Hemostatic profile during late pregnancy and early postpartum period in mares. Theriogenology 2013; 81:639-43. [PMID: 24388675 DOI: 10.1016/j.theriogenology.2013.12.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 11/28/2013] [Accepted: 12/06/2013] [Indexed: 11/27/2022]
Abstract
Hemostasis is a physiological process that prevents excessive blood loss and represents a protective mechanism at the time of delivery. Peripartum hemorrhage is a recurring hazardous condition to mare's health; therefore, we aimed to study mares' hemostatic profile to investigate whether physiological adjustments occur during late pregnancy and early postpartum. Fifteen pregnant mares have been monitored from the 34th week of pregnancy until the third week after foaling. Fifteen nonpregnant mares were used as control group. Jugular blood samples were analyzed for platelet count (Plt), prothrombin time (PT), activated partial thromboplastin time (aPTT), and fibrinogen (Fb). Platelet count showed significant changes at foaling (P < 0.05) and a negative correlation (r = -0.968; P = 0.032) with postpartum. Prothrombin time changed (P < 0.05) showing a significant correlation (r = 0.675; P = 0.016) with late pregnancy. Fibrinogen concentrations changed throughout the experimental period (P < 0.0001). The linear regression model revealed a positive correlation (r = 0.9210; P < 0.0001) between Fb and late pregnancy and a negative correlation (r = -0.9583; P = 0.042) between Fb and early postpartum. The shortening in PT recorded in the imminence of parturition along with the increase in Plt and Fb at foaling might reflect a physiological hypercoagulable state that constrains excessive bleeding, enhancing mares' odds of surviving. Our research improves the knowledge about blood coagulation in periparturient mares providing specific information on routine coagulation tests that may support in monitoring mare's hemostatic profile during late pregnancy and early postpartum.
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Affiliation(s)
- M Bazzano
- Department of Veterinary Science, University of Messina, Messina, Italy
| | - C Giannetto
- Department of Veterinary Science, University of Messina, Messina, Italy
| | - F Fazio
- Department of Veterinary Science, University of Messina, Messina, Italy
| | - S Marafioti
- Department of Veterinary Science, University of Messina, Messina, Italy
| | - E Giudice
- Department of Veterinary Science, University of Messina, Messina, Italy
| | - G Piccione
- Department of Veterinary Science, University of Messina, Messina, Italy.
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Piccione G, Bazzano M, Giannetto C, Marafioti S, Fazio F. Training-induced changes in clotting parameters of athletic horses. J Vet Sci 2013; 15:45-9. [PMID: 24136203 PMCID: PMC3973765 DOI: 10.4142/jvs.2014.15.1.45] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 07/09/2013] [Indexed: 12/03/2022] Open
Abstract
The purpose of this study was to investigate the effects of training on prothrombin time, activated partial thromboplastin time, and fibrinogen (Fb) concentrations in horses to assess potential adaptive response to training. Fifteen clinically healthy horses were enrolled in the present study and equally divided into three groups. Group A completed an intense training program, group B participated in a light training program, and group C included sedentary horses. After 5 weeks, group B was subjected to the same training program completed by group A and renamed group B1. Blood samples were collected by jugular venipuncture from each animal at rest and analyzed within 2 h after sampling. A two-way ANOVA for repeated measures showed a significant effect of training (p < 0.05) on Fb concentrations in group B1 alone during the first week after changing the training program. Our findings demonstrated that Fb is a parameter susceptible to training. Fb plasma levels increase with a more intense training program. However, Fb plasma levels decreased after the first week and returned to basel levels, suggesting that the horses had adapted to the new training program.
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Affiliation(s)
- Giuseppe Piccione
- Department of Veterinary Science, University of Messina, Polo Universitario dell'Annunziata, 98168 Messina,
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Assenza A, Tosto F, Casella S, Fazio F, Giannetto C, Piccione G. Changes in blood coagulation induced by exercise training in young athletic horses. Res Vet Sci 2013; 95:1151-4. [PMID: 23911053 DOI: 10.1016/j.rvsc.2013.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 04/04/2013] [Accepted: 07/08/2013] [Indexed: 11/24/2022]
Abstract
Prothrombin Time (PT), Activated Partial Prothrombin Time (APTT), Fibrinogen concentration (Fbg) and Platelet number (Plt) were evaluated in 20 young athletic horses during a training program. A standardized exercise test (SET) was performed every month for three months. The V4 variations (the speed, in m/min, reached at the blood lactate concentration of 4 mmol/l) obtained for each test were calculated to assess the effect of training program on athletic performance. Blood samples were collected at 20-day intervals over a period of 80 days from the beginning of the training program. The V4 (P < 0.001), PT (P < 0.001), APTT (P < 0.01), Fbg (P < 0.01) and Plt (P < 0.001) varied throughout the training period showing that the modifications of clotting mechanism in response to training period may be considered as a normal physiological response of the hemostatic system to training exercise.
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Affiliation(s)
- A Assenza
- Dipartimento di Scienze Sperimentali e Biotecnologie Applicate, Laboratorio di Fisiologia Comparata dell'Esercizio Fisico, Facoltà di Medicina Veterinaria, Università degli Studi di Messina, Polo Universitario Annunziata, 98168 Messina, Italy.
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