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Beloto LM, Lara NRF, Bassetti LAB, Littig BF, Ferreira RVM, Verdade LM, Camargo PB, Marques TS. Effects of anticoagulants time storage on stable isotope values of crocodilians' blood tissues. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 2024:1-9. [PMID: 39301749 DOI: 10.1080/10256016.2024.2403655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 08/06/2024] [Indexed: 09/22/2024]
Abstract
Rapid coagulation of reptile blood often hinders its use in studies in remote and difficult-to-access areas, necessitating chemical preservation. Therefore, understanding the potential effects of anticoagulants on the isotopic compositions of blood is essential to avoid issues in interpreting the results for ecological studies. In this study we aimed to verify whether the storage time of the blood tissue in anticoagulants can influence its isotopic compositions of the broad-snouted caiman (Caiman latirostris), an ectothermic top predator from eastern South America. Blood samples were obtained from ten adult females of C. latirostris from a commercial breeding facility in 2015. Samples were stored in vials containing ethylenediaminetetraacetic acid (EDTA) and sodium heparin (SH) and centrifuged after 2 and 8 h to separate red blood cells and plasma. No effect of time was found on the δ13C and δ15N of whole blood, plasma, and red blood cells in contact with the two types of anticoagulants, EDTA and SH. The findings have practical implications for researchers in this field, as they suggest that anticoagulants can be used effectively for at least eight hours under refrigeration.
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Affiliation(s)
- Luciana M Beloto
- Laboratório de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, Brazil
| | - Neliton R F Lara
- Laboratório de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, Brazil
| | - Luís A B Bassetti
- Laboratório de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, Brazil
| | - Beatriz F Littig
- Laboratório de Ecologia Aplicada, Universidade de Sorocaba, Sorocaba, Brazil
| | - Ronnie V M Ferreira
- Laboratório de Ecologia Aplicada, Universidade de Sorocaba, Sorocaba, Brazil
| | | | - Plínio B Camargo
- Laboratório de Ecologia Isotópica, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, Brazil
| | - Thiago S Marques
- Laboratório de Ecologia Aplicada, Universidade de Sorocaba, Sorocaba, Brazil
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Brenner EE, Alexander AB, Londoño LA, Stacy NI, Crevasse SE, Hernandez JA, Wellehan JFX. USE OF VISCOELASTIC COAGULATION TESTING IN MEGACHIROPTERA ( PTEROPUS HYPOMELANUS AND PTEROPUS VAMPYRUS) REVEALS HIGH VARIABILITY IN CLOT KINETICS. J Zoo Wildl Med 2024; 55:393-403. [PMID: 38875195 DOI: 10.1638/2023-0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2024] [Indexed: 06/16/2024] Open
Abstract
Megachiroptera is a mammalian suborder that includes old world fruit bats. Common clinical problems among captive Megachiroptera, such as liver disease (e.g., iron storage disease), kidney disease (e.g., protein-losing nephropathy), and heart disease (e.g., dilated cardiomyopathy), carry elevated risk for hemostatic derangements. The assessment of viscoelastic coagulation assays, however, has not yet been reported in bats. The main objective of the study was to describe viscoelastography data using the Viscoelastic Coagulation Monitor (VCM) Vet in captive large flying foxes (Pteropus vampyrus) (n = 20) and variable flying foxes (Pteropus hypomelanus) (n = 10). Additional objectives were to compare viscoelastic and clotting parameters (1) between healthy P. vampyrus and P. hypomelanus bats and (2) between untreated bats and those treated with meloxicam or aspirin, and (3) to examine relationships between activated partial thromboplastin time (aPTT) and potentially homologous viscoelastic parameters clotting time (CT) and clot formation time (CFT). The results showed marked variability among clinically normal bats. The intrinsic pathway, as measured by aPTT, had prolonged times compared with most terrestrial mammals, but similar times to birds, marine mammals, and sea turtles. A search of P. vampyrus genome found stop codons present in two exons of the factor XI gene; alterations in factor XI expression would be expected to alter intrinsic coagulation. Because of the high variability, no statistically significant findings were noted in the secondary objectives. Correlation between aPTT and CT or CFT was not strong (rs = 0.406 or 0.192, respectively). The results from this study suggest that clot kinetics vary widely among Megachiroptera when using the VCM Vet with untreated blood. A prolonged intrinsic coagulation pathway, as has been found in other megachiropteran species, and activation of the extrinsic coagulation pathway during venipuncture may be responsible for the inconsistent results.
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Affiliation(s)
- Emily E Brenner
- Department of Comparative, Diagnostic, and Population Medicine, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA,
| | - Amy B Alexander
- Department of Comparative, Diagnostic, and Population Medicine, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
| | - Leonel A Londoño
- Department of Small Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
| | - Nicole I Stacy
- Department of Comparative, Diagnostic, and Population Medicine, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
| | - Sarah E Crevasse
- Department of Comparative, Diagnostic, and Population Medicine, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
| | - Jorge A Hernandez
- Department of Large Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
| | - James F X Wellehan
- Department of Comparative, Diagnostic, and Population Medicine, University of Florida, College of Veterinary Medicine, Gainesville, FL 32610-0126, USA
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3
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Rosser MF. Clinical Pathology of Freshwater Turtles. Vet Clin North Am Exot Anim Pract 2022; 25:785-804. [PMID: 36122951 DOI: 10.1016/j.cvex.2022.05.005] [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: 11/26/2022]
Abstract
Freshwater turtles are physiologically unique in their adaptations to life on both land and freshwater habitats. Appropriate interpretation of laboratory values specific to these species is important for both conservation efforts in free-ranging populations and in captive populations, especially because these animals become increasingly popular as pets. Although normal physiology has been well characterized, understanding of clinicopathologic changes in response to disease processes in freshwater chelonian species is relatively limited. This article reviews the current knowledge of hematology, plasma biochemistry, and urinalysis specific to freshwater turtles, with correlates to other chelonian species when specific data are unavailable.
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Affiliation(s)
- Michael F Rosser
- Department of Veterinary Clinical Medicine and Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, 1008 West Hazelwood Drive, Urbana, IL 61802, USA.
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Sladakovic I, Brainard BM, Divers SJ, Brooks MB. Coagulation testing in green iguanas (Iguana iguana) with development of prothrombin time assays using reptile and avian thromboplastin. J Vet Emerg Crit Care (San Antonio) 2022; 32:685-689. [PMID: 35561150 DOI: 10.1111/vec.13201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 12/30/2020] [Accepted: 01/14/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Captive reptiles often present with clinical signs suggestive of a clotting disorder or severe illness that can induce or exacerbate a coagulopathy. However, coagulopathies in reptiles are difficult to characterize due to lack of species-appropriate reagents to perform coagulation tests. The objective of this study was to develop screening tests to evaluate the extrinsic and common pathways of coagulation in green iguanas (Iguana iguana). KEY FINDINGS Reptile and avian thromboplastin, extracted from reptile and avian brains, respectively, were used to initiate coagulation in prothrombin time (PT) assays and commercially available reagents were used to determine Russell's viper venom time, thrombin time, and fibrinogen using the Clauss method. Coagulation assays were performed on citrate-anticoagulated plasma from 18 healthy green iguanas. Results were summarized as median (minimum-maximum): PT (reptile thromboplastin), 34.8 seconds (27.1-42.1 s), PT (avian thromboplastin), 78.5 seconds (51.6-114.23 s), Russell's viper venom time, 56.15 seconds (18.4-79.7 s), thrombin time, 10 seconds (7.0-36.5 s), and fibrinogen, 258 mg/dl (89-563.0) (2.58 [0.89-5.63 g/L]). SIGNIFICANCE Commercial reagents can be used to evaluate the common pathway and fibrinogen; however, avian- or reptile-sourced thromboplastin is preferred for a reliable coagulation trigger to perform the PT assay and evaluate the extrinsic pathway.
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Affiliation(s)
- Izidora Sladakovic
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Benjamin M Brainard
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Stephen J Divers
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA
| | - Marjory B Brooks
- Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA
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Yamamura Y, Takeda K, Kawai YK, Ikenaka Y, Kitayama C, Kondo S, Kezuka C, Taniguchi M, Ishizuka M, Nakayama SMM. Sensitivity of turtles to anticoagulant rodenticides: Risk assessment for green sea turtles (Chelonia mydas) in the Ogasawara Islands and comparison of warfarin sensitivity among turtle species. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 233:105792. [PMID: 33662877 DOI: 10.1016/j.aquatox.2021.105792] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 02/15/2021] [Accepted: 02/20/2021] [Indexed: 06/12/2023]
Abstract
Although anticoagulant rodenticides (ARs) are effectively used for the control of invasive rodents, nontarget species are also frequently exposed to ARs and secondary poisonings occur widely. However, little data is available on the effects of ARs, especially on marine organisms. To evaluate the effects of ARs on marine wildlife, we chose green sea turtles (Chelonia mydas), which are one of the most common marine organisms around the Ogasawara islands, as our primary study species. The sensitivity of these turtles to ARs was assessed using both in vivo and in vitro approaches. We administered 4 mg/kg of warfarin sodium either orally or intravenously to juvenile green sea turtles. The turtles exhibited slow pharmacokinetics, and prolongation of prothrombin time (PT) was observed only with intravenous warfarin administration. We also conducted an in vitro investigation using liver microsomes from green sea turtles, and two other turtle species (softshell turtle and red-eared slider) and rats. The cytochrome P450 metabolic activity in the liver of green sea turtles was lower than in rats. Additionally, vitamin K epoxide reductase (VKOR), which is the target enzyme of ARs, was inhibited by warfarin in the turtles at lower concentration levels than in rats. These data indicate that turtles may be more sensitive to ARs than rats. We expect that these findings will be helpful for sea turtle conservation following accidental AR-broadcast incidents.
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Affiliation(s)
- Yoshiya Yamamura
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Kazuki Takeda
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Yusuke K Kawai
- Laboratory of Toxicology, the Graduate School of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Nishi-2, 11-banchi, Obihiro, 080-8555, Japan
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan; Water Research Group, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, South Africa
| | - Chiyo Kitayama
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo, 100-2101, Japan
| | - Satomi Kondo
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo, 100-2101, Japan
| | - Chiho Kezuka
- Kobe Municipal Suma Aqualife Park, Kobe, Hyogo 654-0049, Japan
| | - Mari Taniguchi
- Kobe Municipal Suma Aqualife Park, Kobe, Hyogo 654-0049, Japan
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Shouta M M Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan.
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Marancik DP, Perrault JR, Komoroske LM, Stoll JA, Kelley KN, Manire CA. Plasma proteomics of green turtles ( Chelonia mydas) reveals pathway shifts and potential biomarker candidates associated with health and disease. CONSERVATION PHYSIOLOGY 2021; 9:coab018. [PMID: 33959286 PMCID: PMC8084024 DOI: 10.1093/conphys/coab018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/10/2021] [Accepted: 03/25/2021] [Indexed: 05/08/2023]
Abstract
Evaluating sea turtle health can be challenging due to an incomplete understanding of pathophysiologic responses in these species. Proteome characterization of clinical plasma samples can provide insights into disease progression and prospective biomarker targets. A TMT-10-plex-LC-MS/MS platform was used to characterize the plasma proteome of five, juvenile, green turtles (Chelonia mydas) and compare qualitative and quantitative protein changes during moribund and recovered states. The 10 plasma samples yielded a total of 670 unique proteins. Using ≥1.2-fold change in protein abundance as a benchmark for physiologic upregulation or downregulation, 233 (34.8%) were differentially regulated in at least one turtle between moribund and recovered states. Forty-six proteins (6.9%) were differentially regulated in all five turtles with two proteins (0.3%) demonstrating a statistically significant change. A principle component analysis showed protein abundance loosely clustered between moribund samples or recovered samples and for turtles that presented with trauma (n = 3) or as intestinal floaters (n = 2). Gene Ontology terms demonstrated that moribund samples were represented by a higher number of proteins associated with blood coagulation, adaptive immune responses and acute phase response, while recovered turtle samples included a relatively higher number of proteins associated with metabolic processes and response to nutrients. Abundance levels of 48 proteins (7.2%) in moribund samples significantly correlated with total protein, albumin and/or globulin levels quantified by biochemical analysis. Differentially regulated proteins identified with immunologic and physiologic functions are discussed for their possible role in the green turtle pathophysiologic response and for their potential use as diagnostic biomarkers. These findings enhance our ability to interpret sea turtle health and further progress conservation, research and rehabilitation programs for these ecologically important species.
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Affiliation(s)
- David P Marancik
- Department of Pathobiology, School of Veterinary Medicine, St. George’s University, True Blue, Grenada, West Indies
- Corresponding author: Tel: 473-444-4175.
| | - Justin R Perrault
- Loggerhead Marinelife Center, 14200 US Highway One, Juno Beach, FL 33408, USA
| | - Lisa M Komoroske
- College of Natural Resources, University of Massachusetts Amherst, 230 Stockbridge Road, Amherst, MA 01003, USA
| | - Jamie A Stoll
- College of Natural Resources, University of Massachusetts Amherst, 230 Stockbridge Road, Amherst, MA 01003, USA
| | - Kristina N Kelley
- Department of Pathobiology, School of Veterinary Medicine, St. George’s University, True Blue, Grenada, West Indies
| | - Charles A Manire
- Loggerhead Marinelife Center, 14200 US Highway One, Juno Beach, FL 33408, USA
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7
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Ponczek MB, Shamanaev A, LaPlace A, Dickeson SK, Srivastava P, Sun MF, Gruber A, Kastrup C, Emsley J, Gailani D. The evolution of factor XI and the kallikrein-kinin system. Blood Adv 2020; 4:6135-6147. [PMID: 33351111 PMCID: PMC7757006 DOI: 10.1182/bloodadvances.2020002456] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/19/2020] [Indexed: 12/16/2022] Open
Abstract
Factor XI (FXI) is the zymogen of a plasma protease (FXIa) that contributes to hemostasis by activating factor IX (FIX). In the original cascade model of coagulation, FXI is converted to FXIa by factor XIIa (FXIIa), a component, along with prekallikrein and high-molecular-weight kininogen (HK), of the plasma kallikrein-kinin system (KKS). More recent coagulation models emphasize thrombin as a FXI activator, bypassing the need for FXIIa and the KKS. We took an evolutionary approach to better understand the relationship of FXI to the KKS and thrombin generation. BLAST searches were conducted for FXI, FXII, prekallikrein, and HK using genomes for multiple vertebrate species. The analysis shows the KKS appeared in lobe-finned fish, the ancestors of all land vertebrates. FXI arose later from a duplication of the prekallikrein gene early in mammalian evolution. Features of FXI that facilitate efficient FIX activation are present in all living mammals, including primitive egg-laying monotremes, and may represent enhancement of FIX-activating activity inherent in prekallikrein. FXI activation by thrombin is a more recent acquisition, appearing in placental mammals. These findings suggest FXI activation by FXIIa may be more important to hemostasis in primitive mammals than in placental mammals. FXI activation by thrombin places FXI partially under control of the vitamin K-dependent coagulation mechanism, reducing the importance of the KKS in blood coagulation. This would explain why humans with FXI deficiency have a bleeding abnormality, whereas those lacking components of the KKS do not.
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Affiliation(s)
- Michał B Ponczek
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Aleksandr Shamanaev
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Alec LaPlace
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - S Kent Dickeson
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Priyanka Srivastava
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Mao-Fu Sun
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Andras Gruber
- Department of Biomedical Engineering and
- Division of Hematology and Medical Oncology, School of Medicine, Oregon Health and Sciences University, Portland, OR
- Aronora, Inc., Portland, OR
| | - Christian Kastrup
- Michael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada; and
| | - Jonas Emsley
- Biodiscovery Institute, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - David Gailani
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
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Monteiro WM, Contreras-Bernal JC, Bisneto PF, Sachett J, Mendonça da Silva I, Lacerda M, Guimarães da Costa A, Val F, Brasileiro L, Sartim MA, Silva-de-Oliveira S, Bernarde PS, Kaefer IL, Grazziotin FG, Wen FH, Moura-da-Silva AM. Bothrops atrox, the most important snake involved in human envenomings in the amazon: How venomics contributes to the knowledge of snake biology and clinical toxinology. Toxicon X 2020; 6:100037. [PMID: 32550592 PMCID: PMC7285970 DOI: 10.1016/j.toxcx.2020.100037] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/06/2020] [Accepted: 04/15/2020] [Indexed: 01/22/2023] Open
Abstract
Bothrops atrox snakes are mostly endemic of the Amazon rainforest and is certainly the South American pit viper responsible for most of the snakebites in the region. The composition of B. atrox venom is significantly known and has been used to trace the relevance of the venom phenotype for snake biology and for the impacts in the clinics of human patients involved in accidents by B. atrox. However, in spite of the wide distribution and the great medical relevance of B. atrox snakes, B. atrox taxonomy is not fully resolved and the impacts of the lack of taxonomic resolution on the studies focused on venom or envenoming are currently unknown. B. atrox venom presents different degrees of compositional variability and is generally coagulotoxic, inducing systemic hematological disturbances and local tissue damage in snakebite patients. Antivenoms are the effective therapy for attenuating the clinical signs. This review brings a comprehensive discussion of the literature concerning B. atrox snakes encompassing from snake taxonomy, diet and venom composition, towards clinical aspects of snakebite patients and efficacy of the antivenoms. This discussion is highly supported by the contributions that venomics and antivenomics added for the advancement of knowledge of B. atrox snakes, their venoms and the treatment of accidents they evoke.
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Affiliation(s)
- Wuelton Marcelo Monteiro
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Jorge Carlos Contreras-Bernal
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Pedro Ferreira Bisneto
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
| | - Jacqueline Sachett
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Diretoria de Ensino e Pesquisa, Fundação Alfredo da Matta, Manaus, Brazil
| | - Iran Mendonça da Silva
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Marcus Lacerda
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
- Instituto Leônidas & Maria Deane, Manaus, Brazil
| | - Allyson Guimarães da Costa
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
- Diretoria de Ensino e Pesquisa, Fundação de Hematologia e Hemoterapia do Amazonas, Manaus, Brazil
| | - Fernando Val
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Lisele Brasileiro
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Marco Aurélio Sartim
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
| | - Sâmella Silva-de-Oliveira
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
| | - Paulo Sérgio Bernarde
- Laboratório de Herpetologia, Centro Multidisciplinar, Campus Floresta, Universidade Federal do Acre, Cruzeiro do Sul, AC, Brazil
| | - Igor L. Kaefer
- Programa de Pós-Graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brazil
| | | | | | - Ana Maria Moura-da-Silva
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil
- Instituto Butantan, São Paulo, Brazil
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9
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Soslau G. The role of the red blood cell and platelet in the evolution of mammalian and avian endothermy. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2019; 334:113-127. [DOI: 10.1002/jez.b.22922] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 10/04/2019] [Accepted: 11/09/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Gerald Soslau
- Department of Biochemistry and Molecular BiologyDrexel University College of MedicinePhiladelphia Pennsylvania
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10
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COAGULATION ASSESSMENT: UNDERUTILIZED DIAGNOSTIC TOOLS IN ZOO AND AQUATIC ANIMAL MEDICINE. J Zoo Wildl Med 2018; 48:947-953. [PMID: 29297814 DOI: 10.1638/2016-0145r.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Veterinarians specializing in nondomestic species are faced with unique challenges regarding research and diagnostic capabilities given the wild and frequently dangerous nature of their patients. Standard diagnostic techniques used in small or large animal practice are not always possible due to anatomical constraints, size, tractability, or the inherent risk of anesthesia in highly valued, rare species. Diagnostic modalities that utilize simple, relatively noninvasive techniques show promise in evaluating nondomestic species and elucidating the pathophysiology behind poorly characterized disease processes in both wild and captive populations. Coagulation profiles, which may include prothrombin time (PT), partial thromboplastin time (PTT), D-dimer concentration, platelet count, and thromboelastography (TEG) are frequently used in domestic species but often overlooked in exotic medicine due to lack of normal reference values and/or availability. Whenever possible, coagulation profiles should be utilized in the evaluation of various disease processes including neoplasia, sepsis, trauma, inflammation, toxin exposure, and envenomation. There are several reports of coagulopathies in both wild and captive species; however, few studies on coagulation profiles have been published on nondomestic species. Clinicians should consider coagulation testing as part of the diagnostic work-up in nondomestic species. A review of available coagulation diagnostic tests is provided here in addition to summarizing the pertinent coagulation disorders currently established in the literature.
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11
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Gaspar P, Lalire M. A model for simulating the active dispersal of juvenile sea turtles with a case study on western Pacific leatherback turtles. PLoS One 2017; 12:e0181595. [PMID: 28746389 PMCID: PMC5528265 DOI: 10.1371/journal.pone.0181595] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/03/2017] [Indexed: 11/18/2022] Open
Abstract
Oceanic currents are known to broadly shape the dispersal of juvenile sea turtles during their pelagic stage. Accordingly, simple passive drift models are widely used to investigate the distribution at sea of various juvenile sea turtle populations. However, evidence is growing that juveniles do not drift purely passively but also display some swimming activity likely directed towards favorable habitats. We therefore present here a novel Sea Turtle Active Movement Model (STAMM) in which juvenile sea turtles actively disperse under the combined effects of oceanic currents and habitat-driven movements. This model applies to all sea turtle species but is calibrated here for leatherback turtles (Dermochelys coriacea). It is first tested in a simulation of the active dispersal of juveniles originating from Jamursba-Medi, a main nesting beach of the western Pacific leatherback population. Dispersal into the North Pacific Ocean is specifically investigated. Simulation results demonstrate that, while oceanic currents broadly shape the dispersal area, modeled habitat-driven movements strongly structure the spatial and temporal distribution of juveniles within this area. In particular, these movements lead juveniles to gather in the North Pacific Transition Zone (NPTZ) and to undertake seasonal north-south migrations. More surprisingly, juveniles in the NPTZ are simulated to swim mostly towards west which considerably slows down their progression towards the American west coast. This increases their residence time, and hence the risk of interactions with fisheries, in the central and eastern part of the North Pacific basin. Simulated habitat-driven movements also strongly reduce the risk of cold-induced mortality. This risk appears to be larger among the juveniles that rapidly circulate into the Kuroshio than among those that first drift into the North Equatorial Counter Current (NECC). This mechanism might induce marked interannual variability in juvenile survival as the strength and position of the NECC are directly linked to El Niño activity.
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Affiliation(s)
- Philippe Gaspar
- Sustainable Management of Marine Resources, Collecte Localisation Satellite, Ramonville-Saint-Agne, France
| | - Maxime Lalire
- Sustainable Management of Marine Resources, Collecte Localisation Satellite, Ramonville-Saint-Agne, France
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Villa CA, Finlayson S, Limpus C, Gaus C. A multi-element screening method to identify metal targets for blood biomonitoring in green sea turtles (Chelonia mydas). THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 512-513:613-621. [PMID: 25655987 DOI: 10.1016/j.scitotenv.2014.11.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/30/2014] [Accepted: 11/30/2014] [Indexed: 05/06/2023]
Abstract
Biomonitoring of blood is commonly used to identify and quantify occupational or environmental exposure to chemical contaminants. Increasingly, this technique has been applied to wildlife contaminant monitoring, including for green turtles, allowing for the non-lethal evaluation of chemical exposure in their nearshore environment. The sources, composition, bioavailability and toxicity of metals in the marine environment are, however, often unknown and influenced by numerous biotic and abiotic factors. These factors can vary considerably across time and space making the selection of the most informative elements for biomonitoring challenging. This study aimed to validate an ICP-MS multi-element screening method for green turtle blood in order to identify and facilitate prioritisation of target metals for subsequent fully quantitative analysis. Multi-element screening provided semiquantitative results for 70 elements, 28 of which were also determined through fully quantitative analysis. Of the 28 comparable elements, 23 of the semiquantitative results had an accuracy between 67% and 112% relative to the fully quantified values. In lieu of any available turtle certified reference materials (CRMs), we evaluated the use of human blood CRMs as a matrix surrogate for quality control, and compared two commonly used sample preparation methods for matrix related effects. The results demonstrate that human blood provides an appropriate matrix for use as a quality control material in the fully quantitative analysis of metals in turtle blood. An example for the application of this screening method is provided by comparing screening results from blood of green turtles foraging in an urban and rural region in Queensland, Australia. Potential targets for future metal biomonitoring in these regions were identified by this approach.
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Affiliation(s)
- C A Villa
- The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 39 Kessels Road, Coopers Plains, QLD 4108, Australia.
| | - S Finlayson
- Queensland Health Forensic and Scientific Services (QHFSS), 39 Kessels Road, Coopers Plains, QLD 4108, Australia
| | - C Limpus
- Threatened Species Unit, Department of Environment and Heritage Protection (DEHP),41 Boggo Road, Dutton Park, QLD 4102, Australia
| | - C Gaus
- The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 39 Kessels Road, Coopers Plains, QLD 4108, Australia.
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Soslau G, Mason C, Lynch S, Benjamin J, Ashak D, Prakash JM, Moore A, Bagsiyao P, Albert T, Mathew LM, Jost M. Intracellular matrix metalloproteinase-2 (MMP-2) regulates human platelet activation via hydrolysis of talin. Thromb Haemost 2013; 111:140-53. [PMID: 24136115 DOI: 10.1160/th13-03-0248] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 09/09/2013] [Indexed: 12/22/2022]
Abstract
Matrix metalloproteinase (MMP) activity is generally associated with normal or pathological extracellular processes such as tissue remodelling in growth and development or in tumor metastasis and angiogenesis. Platelets contain at least three MMPs, 1, 2 and 9 that have been reported to stimulate or inhibit agonist-induced platelet aggregation via extracellular signals. The non-selective Zn+2 chelating MMP inhibitor, 1,10-phenanthroline, and the serine protease inhibitor, AEBSF, were found to inhibit all tested agonist-induced platelet aggregation reactions. In vitro analysis demonstrated that 1,10-phenanthroline completely inhibited MMP-1,2,and 9 but had little to no effect on calpain activity while the converse was true with AEBSF. We now demonstrate that MMP-2 functions intracellularly to regulate agonist-induced platelet aggregations via the hydrolytic activation of talin, the presumed final activating factor of glycoprotein (GP)IIb/IIIa integrin (the inside-out signal). Once activated GPIIb/IIIa binds the dimeric fibrinogen molecule required for platelet aggregation. The active intracellular MMP-2 molecule is complexed with JAK 2/STAT 3, as demonstrated by the fact that all three proteins are co-immunoprecipitated with either anti-JAK 2, or anti-STAT 3 antibodies and by immunofluorescence studies. The MMP-2 platelet activation pathway can be synergistically inhibited with the non-selective MMP inhibitor, 1,10-phenanthroline, plus a JAK 2 inhibitor. This activation pathway is distinct from the previously reported calpain-talin activating pathway. The identification of a new central pathway for platelet aggregation presents new potential targets for drug regulation and furthers our understanding of the complexity of platelet activation mechanisms.
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Affiliation(s)
- Gerald Soslau
- Gerald Soslau, PhD, Office of Professional Studies in the Health Sciences, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA 19102, USA, Tel.: +1 215 762 7831, Fax: +1 215 762 7434, E-mail:
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Perrault JR, Miller DL, Eads E, Johnson C, Merrill A, Thompson LJ, Wyneken J. Maternal health status correlates with nest success of leatherback sea turtles (Dermochelys coriacea) from Florida. PLoS One 2012; 7:e31841. [PMID: 22359635 PMCID: PMC3281022 DOI: 10.1371/journal.pone.0031841] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Accepted: 01/12/2012] [Indexed: 11/18/2022] Open
Abstract
Of the seven sea turtle species, the critically endangered leatherback sea turtle (Dermochelys coriacea) exhibits the lowest and most variable nest success (i.e., hatching success and emergence success) for reasons that remain largely unknown. In an attempt to identify or rule out causes of low reproductive success in this species, we established the largest sample size (n = 60-70 for most values) of baseline blood parameters (protein electrophoresis, hematology, plasma biochemistry) for this species to date. Hematologic, protein electrophoretic and biochemical values are important tools that can provide information regarding the physiological condition of an individual and population health as a whole. It has been proposed that the health of nesting individuals affects their reproductive output. In order to establish correlations with low reproductive success in leatherback sea turtles from Florida, we compared maternal health indices to hatching success and emergence success of their nests. As expected, hatching success (median = 57.4%) and emergence success (median = 49.1%) in Floridian leatherbacks were low during the study period (2007-2008 nesting seasons), a trend common in most nesting leatherback populations (average global hatching success = ∼50%). One protein electrophoretic value (gamma globulin protein) and one hematologic value (red blood cell count) significantly correlated with hatching success and emergence success. Several maternal biochemical parameters correlated with hatching success and/or emergence success including alkaline phosphatase activity, blood urea nitrogen, calcium, calcium:phosphorus ratio, carbon dioxide, cholesterol, creatinine, and phosphorus. Our results suggest that in leatherbacks, physiological parameters correlate with hatching success and emergence success of their nests. We conclude that long-term and comparative studies are needed to determine if certain individuals produce nests with lower hatching success and emergence success than others, and if those individuals with evidence of chronic suboptimal health have lower reproductive success.
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Affiliation(s)
- Justin R Perrault
- Department of Biological Sciences, Florida Atlantic University, Boca Raton, Florida, United States of America.
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Soslau G, Russell JA, Spotila JR, Mathew AJ, Bagsiyao P. Acinetobacter sp. HM746599 isolated from leatherback turtle blood. FEMS Microbiol Lett 2011; 322:166-71. [PMID: 21707734 DOI: 10.1111/j.1574-6968.2011.02346.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A newly described bacterial isolate, Acinetobacter sp. HM746599, has been obtained from leatherback sea turtle hatchling blood. The implication is that the hatchling was infected during development in the egg, which is substantiated by other studies to be reported by us in the future. The 16S rRNA gene sequence of the bacterium (GenBank accession number: HM746599) showed the greatest similarity to the identified species, Acinetobacter beijerinckii (97.6-99.78%) and Acinetobacter venetianus (99.78%). Acinetobacter sp. HM746599 are gram-negative, rod-shaped coccobacilli and are hemolytic/cytotoxic to human and sea turtle red blood cells (RBCs). Hemolysis is not the result of any detectable soluble toxin. Acinetobacter beijerinckii and A. venetianus hemolyze sheep RBCs while Acinetobacter sp. HM746599 does not, and unlike A. venetianus, the growth of Acinetobacter sp. HM746599 and A. beijerinckii is not supported by l-arginine. Many Acinetobacter species, especially hemolytic ones, are pathogenic to immunologically compromised humans and it is possible that, in addition to sea turtles, this bacterium might also be a danger to susceptible humans who handle infected hatchlings. The bacteria are available from CCUG (Culture Collection, University Gothenburg, Göteborg, Sweden) and from NRRL (Agricultural Research Service Culture Collection, Peoria, IL).
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Affiliation(s)
- Gerald Soslau
- Office of Professional Studies in the Health Sciences, Drexel University College of Medicine, Philadelphia, PA 19102, USA.
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Morgan DA, Class R, Violetta G, Soslau G. Cytokine mediated proliferation of cultured sea turtle blood cells: Morphologic and functional comparison to human blood cells. Tissue Cell 2009; 41:299-309. [DOI: 10.1016/j.tice.2008.12.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2008] [Revised: 12/10/2008] [Accepted: 12/24/2008] [Indexed: 10/21/2022]
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Wallace BP, George RH. Alternative Techniques for Obtaining Blood Samples from Leatherback Turtles. CHELONIAN CONSERVATION AND BIOLOGY 2007. [DOI: 10.2744/1071-8443(2007)6[147:atfobs]2.0.co;2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Soslau G, Prest PJ, Class R, George R, Paladino F, Violetta G. Comparison of sea turtle thrombocyte aggregation to human platelet aggregation in whole blood. Comp Biochem Physiol B Biochem Mol Biol 2005; 142:353-60. [PMID: 16183311 DOI: 10.1016/j.cbpb.2005.08.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2005] [Revised: 08/25/2005] [Accepted: 08/27/2005] [Indexed: 11/19/2022]
Abstract
The endangered sea turtles are living "fossils" that afford us an opportunity to study the hemostatic process as it likely existed millions of years ago. There are essentially no data about turtle thrombocyte aggregation prior to our studies. Thrombocytes are nucleated cells that serve the same hemostatic functions as the anucleated mammalian platelet. Sea turtle thrombocytes aggregate in response to collagen and beta-thrombin. Ristocetin induces an agglutination/aggregation response indicating the presence of a von Willebrand-like receptor, GPIb, found in all mammalian platelets. Samples treated with alpha-thrombin plus gamma-thrombin followed by ristocetin results in a rapid, stronger response than ristocetin alone. These responses are inhibited by the RGDS peptide that blocks fibrinogen cross-linking of mammalian platelets via the fibrinogen receptor, GPIIb/IIIa. Three platelet-like proteins, GPIb, GPIIb/IIIa and P-selection are detected in sea turtle thrombocytes by fluorescence activated cell sorting. Turtle thrombocytes do not respond to ADP, epinephrine, serotonin, thromboxane A2 mimetic, U46619, trypsin, or alpha-thrombin and gamma-thrombin added alone. Comparison of hemostasis in sea turtles to other vertebrates could provide a framework for understanding the structure/function and evolution of these pathways and their individual components.
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Affiliation(s)
- Gerald Soslau
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, 245 N. 15th Street, MS 344, Philadelphia, PA 19102, USA.
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