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Martello S, Bylicky MA, Shankavaram U, May JM, Chopra S, Sproull M, Scott KMK, Aryankalayil MJ, Coleman CN. Comparative Analysis of miRNA Expression after Whole-Body Irradiation Across Three Strains of Mice. Radiat Res 2023; 200:266-280. [PMID: 37527359 PMCID: PMC10635637 DOI: 10.1667/rade-23-00007.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/19/2023] [Indexed: 08/03/2023]
Abstract
Whole- or partial-body exposure to ionizing radiation damages major organ systems, leading to dysfunction on both acute and chronic timescales. Radiation medical countermeasures can mitigate acute damages and may delay chronic effects when delivered within days after exposure. However, in the event of widespread radiation exposure, there will inevitably be scarce resources with limited countermeasures to distribute among the affected population. Radiation biodosimetry is necessary to separate exposed from unexposed victims and determine those who requires the most urgent care. Blood-based, microRNA signatures have great potential for biodosimetry, but the affected population in such a situation will be genetically heterogeneous and have varying miRNA responses to radiation. Thus, there is a need to understand differences in radiation-induced miRNA expression across different genetic backgrounds to develop a robust signature. We used inbred mouse strains C3H/HeJ and BALB/c mice to determine how accurate miRNA in blood would be in developing markers for radiation vs. no radiation, low dose (1 Gy, 2 Gy) vs. high dose (4 Gy, 8 Gy), and high risk (8 Gy) vs. low risk (1 Gy, 2 Gy, 4 Gy). Mice were exposed to whole-body doses of 0 Gy, 1 Gy, 2 Gy, 4 Gy, or 8 Gy of X rays. MiRNA expression changes were identified using NanoString nCounter panels on blood RNA collected 1, 2, 3 or 7 days postirradiation. Overall, C3H/HeJ mice had more differentially expressed miRNAs across all doses and timepoints than BALB/c mice. The highest amount of differential expression occurred at days 2 and 3 postirradiation for both strains. Comparison of C3H/HeJ and BALB/c expression profiles to those previously identified in C57BL/6 mice revealed 12 miRNAs that were commonly expressed across all three strains, only one of which, miR-340-5p, displayed a consistent regulation pattern in all three miRNA data. Notably multiple Let-7 family members predicted high-dose and high-risk radiation exposure (Let-7a, Let-7f, Let-7e, Let-7g, and Let-7d). KEGG pathway analysis demonstrated involvement of these predicted miRNAs in pathways related to: Fatty acid metabolism, Lysine degradation and FoxO signaling. These findings indicate differences in the miRNA response to radiation across various genetic backgrounds, and highlights key similarities, which we exploited to discover miRNAs that predict radiation exposure. Our study demonstrates the need and the utility of including multiple animal strains in developing and validating biodosimetry diagnostic signatures. From this data, we developed highly accurate miRNA signatures capable of predicting exposed and unexposed subjects within a genetically heterogeneous population as quickly as 24 h of exposure to radiation.
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Affiliation(s)
- Shannon Martello
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Michelle A. Bylicky
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Uma Shankavaram
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Jared M. May
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Sunita Chopra
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Mary Sproull
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Kevin MK Scott
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - Molykutty J. Aryankalayil
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
| | - C. Norman Coleman
- Radiation Oncology Branch, Center for Cancer, National Institutes of Health, Rockville, Maryland 20850
- Radiation Research Program, National Cancer Institute, National Institutes of Health, Rockville, Maryland 20850
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2
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Sun Y, Ye F, Li D, Yang H, Xu T, Zhong X, Lu Y, Zhou H, Pan J. Fibroblast growth factor 2 (FGF2) ameliorates the coagulation abnormalities in sepsis. Toxicol Appl Pharmacol 2023; 460:116364. [PMID: 36621722 DOI: 10.1016/j.taap.2023.116364] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/07/2023]
Abstract
BACKGROUND Sepsis is defined as a life-threatening organ dysfunction caused by dysregulation of the host response to infection. There is still a lack of specific treatment for sepsis. Here, we report that Fibroblast growth factor-2 (FGF2) can reduce the mortality of sepsis by ameliorating the coagulation abnormalities. METHODS FGF2 was intraperitoneally injected into septic mice induced by lipopolysaccharide (LPS) and then assessed for coagulation response, organ damage and survival. RAW264.7 cells with or without FGF2 pretreating were exposed to LPS, and then changes in coagulation related factors expression and signaling were tested. RESULTS The findings showed that intraperitoneal injection of FGF2 inhibited coagulation activity, reduced lung and liver damage, and increased survival in septic mice. In RAW264.7 cells, LPS upregulated the expression of tissue factor (TF) and plasminogen activator inhibitor-1 (PAI-1); however, pretreatment with FGF2 prevented this upregulation, while FGF2 knockdown exacerbated TF upregulation. Moreover, FGF2 suppressing the AKT/mTOR/S6K1 signaling pathway in septic mice and RAW264.7 cells stimulated by LPS. CONCLUSIONS This study revealed a therapeutic role of FGF2 in ameliorating the coagulation abnormalities during sepsis.
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Affiliation(s)
- Yuanyuan Sun
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Fanrong Ye
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Ding Li
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Hongjing Yang
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Tingting Xu
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Xincun Zhong
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Yilun Lu
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Hongmin Zhou
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China
| | - Jingye Pan
- Department of Intensive Care Unit, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, China; Wenzhou Key Laboratory of Critical Care and Artificial Intelligence, Wenzhou, China; Collaborative Innovation Center for Intelligence Medical Education, Wenzhou, China; Zhejiang Engineering Research Center for Hospital Emergency and Process Digitization, Wenzhou, China.
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3
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Xie S, Jiang C, Wu M, Ye Y, Wu B, Sun X, Lv X, Chen R, Yu W, Sun Q, Wu Y, Que R, Li H, Yang L, Liu W, Zuo J, Jensen LD, Huang G, Cao Y, Yang Y. Dietary ketone body-escalated histone acetylation in megakaryocytes alleviates chemotherapy-induced thrombocytopenia. Sci Transl Med 2022; 14:eabn9061. [PMID: 36449600 DOI: 10.1126/scitranslmed.abn9061] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Chemotherapy-induced thrombocytopenia (CIT) is a severe complication in patients with cancer that can lead to impaired therapeutic outcome and survival. Clinically, therapeutic options for CIT are limited by severe adverse effects and high economic burdens. Here, we demonstrate that ketogenic diets alleviate CIT in both animals and humans without causing thrombocytosis. Mechanistically, ketogenic diet-induced circulating β-hydroxybutyrate (β-OHB) increased histone H3 acetylation in bone marrow megakaryocytes. Gain- and loss-of-function experiments revealed a distinct role of 3-β-hydroxybutyrate dehydrogenase (BDH)-mediated ketone body metabolism in promoting histone acetylation, which promoted the transcription of platelet biogenesis genes and induced thrombocytopoiesis. Genetic depletion of the megakaryocyte-specific ketone body transporter monocarboxylate transporter 1 (MCT1) or pharmacological targeting of MCT1 blocked β-OHB-induced thrombocytopoiesis in mice. A ketogenesis-promoting diet alleviated CIT in mouse models. Moreover, a ketogenic diet modestly increased platelet counts without causing thrombocytosis in healthy volunteers, and a ketogenic lifestyle inversely correlated with CIT in patients with cancer. Together, we provide mechanistic insights into a ketone body-MCT1-BDH-histone acetylation-platelet biogenesis axis in megakaryocytes and propose a nontoxic, low-cost dietary intervention for combating CIT.
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Affiliation(s)
- Sisi Xie
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China
| | - Chenyu Jiang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Meng Wu
- Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China
| | - Ying Ye
- Department of Oral Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China
| | - Biying Wu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Xiaoting Sun
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 65 Solna, Sweden.,Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vison and Brain Health), School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325024, China
| | - Xue Lv
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300020, China
| | - Ruibo Chen
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wen Yu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qi Sun
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yuting Wu
- Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China
| | - Rongliang Que
- Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China
| | - Huilan Li
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.,Longyan First Hospital Affiliated to Fujian Medical University, Longyan 364000, China
| | - Ling Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wen Liu
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ji Zuo
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Lasse D Jensen
- Department of Health, Medical and Caring Sciences, Division of Cardiovascular Medicine, Linköping University, 581 83 Linköping, Sweden
| | - Guichun Huang
- Medical Oncology Department of Jinling Hospital, Medical School of Nanjing University, Nanjing 200002, China
| | - Yihai Cao
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, 171 65 Solna, Sweden
| | - Yunlong Yang
- Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
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4
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Liu J, Solanki A, White MJV, Hubbell JA, Briquez PS. Therapeutic use of α2-antiplasmin as an antifibrinolytic and hemostatic agent in surgery and regenerative medicine. NPJ Regen Med 2022; 7:34. [PMID: 35773290 PMCID: PMC9246914 DOI: 10.1038/s41536-022-00230-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 06/06/2022] [Indexed: 11/14/2022] Open
Abstract
The biomaterial fibrin is widely used as a clinical tissue sealant in surgery. In preclinical research, fibrin is also extensively studied as a carrier material for growth factor delivery. In these applications, premature fibrin degradation leads to recurrent bleeding, tissue dehiscence and limited regenerative efficacy. Therefore, fibrinolysis inhibitors have been added to clinical fibrin formulations, for example the bovine-derived serine protease inhibitor aprotinin. Aprotinin is additionally used as a hemostatic agent to prevent excessive bleeding during surgery, in this case protecting endogenous fibrin clots. Nevertheless, aprotinin use has been associated with serious safety issues. Here, we explore the use the human physiological fibrinolysis inhibitor α2-antiplasmin (α2PI) as a substitute for aprotinin. We evaluate the efficacy of α2PI in the three main applications of aprotinin. We first showed that recombinant α2PI can successfully prolong the durability of fibrin biomaterials as compared to aprotinin in a model of subcutaneous implantation in mice mimicking application as a tissue sealant. We then used α2PI to enhance the delivery of engineered vascular endothelial growth factor (VEGF)-A and platelet-derived growth factor (PDGF)-BB in fibrin in promoting diabetic wound healing, which lead to improved wound closure, granulation tissue formation and angiogenesis. Lastly, we demonstrated that α2PI can be as effective as aprotinin as an intravenous hemostatic agent to prevent blood loss, using a tail-vein bleeding model in mice. Therefore, we believe that engineering fibrin biomaterials or endogenous fibrin with α2PI can have a strong impact in surgery and regenerative medicine by providing a competitive substitute to aprotinin that is of human origin.
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Affiliation(s)
- Jialu Liu
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Ani Solanki
- Animal Resources Center, University of Chicago, Chicago, IL, USA
| | - Michael J V White
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Jeffrey A Hubbell
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA. .,Committee on Immunology, University of Chicago, Chicago, IL, USA. .,Committee on Cancer Biology, University of Chicago, Chicago, IL, USA.
| | - Priscilla S Briquez
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA. .,Department of General and Visceral Surgery, Medical Center - University of Freiburg, Freiburg, Germany.
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5
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Chraibi S, Rosière R, De Prez E, Gérard P, Antoine MH, Langer I, Nortier J, Remmelink M, Amighi K, Wauthoz N. Preclinical tolerance evaluation of the addition of a cisplatin-based dry powder for inhalation to the conventional carboplatin-paclitaxel doublet for treatment of non-small cell lung cancer. Biomed Pharmacother 2021; 139:111716. [PMID: 34243618 DOI: 10.1016/j.biopha.2021.111716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 12/24/2022] Open
Abstract
Despite the advances in targeted therapies and immunotherapy for non-small cell lung cancer (NSCLC) patients, the intravenous administration of carboplatin (CARB) and paclitaxel (PTX) in well-spaced cycles is widely indicated for the treatment of NSCLC from stage II to stage IV. Our strategy was to add a controlled-release cisplatin-based dry-powder for inhalation (CIS-DPI-ET) to the conventional CARB-PTX-IV doublet, administered during the treatment off-cycles to intensify the therapeutic response while avoiding the impairment of pulmonary, renal and haematological tolerance of these combinations. The co-administration of CIS-DPI-ET (0.5 mg/kg) and CARB-PTX-IV (17-10 mg/kg) the same day showed a higher proportion of neutrophils in BALF (35 ± 7% vs 1.3 ± 0.8%), with earlier regenerative anaemia than with CARB-PTX-IV alone. A first strategy of CARB-PTX-IV dose reduction by 25% also induced neutrophil recruitment, but in a lower proportion than with the first combination (20 ± 6% vs 0.3 ± 0.3%) and avoiding regenerative anaemia. A second strategy of delaying CIS-DPI-ET and CARB-PTX-IV administrations by 24 h avoided both the recruitment of neutrophils in BALF and regenerative anaemia. Moreover, all these groups showed higher cytotoxicity (LDH activity, protein content) with no higher renal toxicities. These two strategies seem interesting to be assessed in terms of antitumor efficacy in mice.
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Affiliation(s)
- S Chraibi
- Unit of Pharmaceutics and Biopharmaceutics, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Brussels, Belgium.
| | - R Rosière
- Unit of Pharmaceutics and Biopharmaceutics, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Brussels, Belgium; InhaTarget Therapeutics, Rue Auguste Piccard 37, 6041 Gosselies, Belgium
| | - E De Prez
- Laboratory of Experimental Nephrology, Faculty of Medicine, ULB, Brussels, Belgium
| | - P Gérard
- InhaTarget Therapeutics, Rue Auguste Piccard 37, 6041 Gosselies, Belgium
| | - M H Antoine
- Laboratory of Experimental Nephrology, Faculty of Medicine, ULB, Brussels, Belgium
| | - I Langer
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), ULB, Brussels, Belgium
| | - J Nortier
- Laboratory of Experimental Nephrology, Faculty of Medicine, ULB, Brussels, Belgium
| | - M Remmelink
- Department of Pathology, ULB, Hôpital Erasme, Brussels, Belgium
| | - K Amighi
- Unit of Pharmaceutics and Biopharmaceutics, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Brussels, Belgium
| | - N Wauthoz
- Unit of Pharmaceutics and Biopharmaceutics, Faculty of Pharmacy, Université libre de Bruxelles (ULB), Brussels, Belgium
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6
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Pokrovskaya I, Tobin M, Desai R, Aronova MA, Kamykowski JA, Zhang G, Joshi S, Whiteheart SW, Leapman RD, Storrie B. Structural analysis of resting mouse platelets by 3D-EM reveals an unexpected variation in α-granule shape. Platelets 2020; 32:608-617. [PMID: 32815431 DOI: 10.1080/09537104.2020.1799970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mice and mouse platelets are major experimental models for hemostasis and thrombosis; however, important physiological data from this model has received little to no quantitative, 3D ultrastructural analysis. We used state-of-the-art, serial block imaging scanning electron microscopy (SBF-SEM, nominal Z-step size was 35 nm) to image resting platelets from C57BL/6 mice. α-Granules were identified morphologically and rendered in 3D space. The quantitative analysis revealed that mouse α-granules typically had a variable, elongated, rod shape, different from the round/ovoid shape of human α-granules. This variation in length was confirmed qualitatively by higher-resolution, focused ion beam (FIB) SEM at a nominal 5 nm Z-step size. The unexpected α-granule shape raises novel questions regarding α-granule biogenesis and dynamics. Does the variation arise at the level of the megakaryocyte and α-granule biogenesis or from differences in α-granule dynamics and organelle fusion/fission events within circulating platelets? Further quantitative analysis revealed that the two major organelles in circulating platelets, α-granules and mitochondria, displayed a stronger linear relationship between organelle number/volume and platelet size, i.e., a scaling in number and volume to platelet size, than found in human platelets suggestive of a tighter mechanistic regulation of their inclusion during platelet biogenesis. In conclusion, the overall spatial arrangement of organelles within mouse platelets was similar to that of resting human platelets, with mouse α-granules clustered closely together with little space for interdigitation of other organelles.
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Affiliation(s)
- Irina Pokrovskaya
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Michael Tobin
- Laboratory of Cellular Imaging and Macromolecular Biophysics, NIBIB, NIH, Bethesda, MD, USA
| | - Rohan Desai
- Laboratory of Cellular Imaging and Macromolecular Biophysics, NIBIB, NIH, Bethesda, MD, USA
| | - Maria A Aronova
- Laboratory of Cellular Imaging and Macromolecular Biophysics, NIBIB, NIH, Bethesda, MD, USA
| | - Jeffrey A Kamykowski
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Guofeng Zhang
- Laboratory of Cellular Imaging and Macromolecular Biophysics, NIBIB, NIH, Bethesda, MD, USA
| | - Smita Joshi
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Sidney W Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Richard D Leapman
- Laboratory of Cellular Imaging and Macromolecular Biophysics, NIBIB, NIH, Bethesda, MD, USA
| | - Brian Storrie
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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7
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Kashiwakura Y, Kojima H, Kanno Y, Hashiguchi M, Kobata T. Heparin affects the induction of regulatory T cells independent of anti-coagulant activity and suppresses allogeneic immune responses. Clin Exp Immunol 2020; 202:119-135. [PMID: 32562271 DOI: 10.1111/cei.13480] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 12/22/2022] Open
Abstract
Heparin is a widely used anti-coagulant that enhances anti-thrombin (AT) activity. However, heparin also suppresses immune and inflammatory responses in various rodent models and clinical trials, respectively. The mechanism by which heparin suppresses immune responses is unclear. The effect of heparin on regulatory T cells (Tregs ) in allogeneic immune responses was analysed using an acute graft-versus-host disease (aGVHD) mouse model and mixed lymphocyte reactions (MLRs). In-vitro culture systems were utilized to study the effects of heparin on Tregs . Heparin administration reduced mortality rates and increased the proportion of Tregs in the early post-transplantation period of aGVHD mice. In both murine and human MLRs, heparin increased Tregs and inhibited responder T cell proliferation. Heparin promoted functional CD4+ CD25+ forkhead box protein 3 (FoxP3)+ Treg generation from naive CD4+ T cells, increased interleukin (IL)-2 production and enhanced the activation of pre-existing Tregs with IL-2. Heparin-induced Treg increases were not associated with anti-coagulant activity through AT, but required negatively charged sulphation of heparin. Importantly, N-acetyl heparin, a chemically modified heparin without anti-coagulant activity, induced Tregs and decreased mortality in aGVHD mice. Our results indicate that heparin contributes to Treg -mediated immunosuppression through IL-2 production and suggest that heparin derivatives may be useful for immunopathological control by efficient Treg induction.
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Affiliation(s)
- Y Kashiwakura
- Department of Immunology, Dokkyo Medical University School of Medicine, Tochigi, Japan.,Department of Biochemistry, Jichi Medical University School of Medicine, Tochigi, Japan
| | - H Kojima
- Department of Immunology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Y Kanno
- Department of Immunology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - M Hashiguchi
- Department of Immunology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - T Kobata
- Department of Immunology, Dokkyo Medical University School of Medicine, Tochigi, Japan
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8
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Gama LA, Rocha Machado MP, Beckmann APS, Miranda JRDA, Corá LA, Américo MF. Gastrointestinal motility and morphology in mice: Strain-dependent differences. Neurogastroenterol Motil 2020; 32:e13824. [PMID: 32096330 DOI: 10.1111/nmo.13824] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 01/31/2020] [Accepted: 02/04/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND BALB/c and C57BL/6 mice are widely used in biomedical research; however, the differences between strains are still underestimated. Our aims were to develop an experimental protocol to evaluate the duodenal contractility and gastrointestinal transit in mice using the Alternating Current Biosusceptometry (ACB) technique and to compare gastrointestinal motor function and morphology between BALB/c and C57BL/6 strains. METHODS Male mice were used in experiments (a) duodenal contractility: animals which had a magnetic marker surgically fixed in the duodenum to determine the frequency and amplitude of contractions and (b) gastrointestinal transit: animals which ingested a magnetically marked chow to calculate the Oro-Anal Transit Time (OATT) and the Fecal Pellet Elimination Rate (FPER). The animals were killed after the experiments for organ collection and morphometric analysis. KEY RESULTS BALB/c and C57BL/6 had two different duodenal frequencies (high and low) with similar amplitudes. After 10 hours of monitoring, BALB/c eliminated around 89% of the ingested marker and C57BL/6 eliminated 33%; OATT and FPER were slower for C57BL/6 compared with BALB/c. The OATT and amplitude of low frequency had a strong positive correlation in C57BL/6. For BALB/c, the gastric muscular layer was thicker compared to that measured for C57BL/6. CONCLUSIONS AND INFERENCES The experimental protocol to evaluate duodenal contractility and fecal magnetic pellets output using the ACB technique in mice was successfully established. BALB/c strains had higher duodenal frequencies and a shorter time to eliminate the ingested marker. Our results showed differences in both motor function and gastrointestinal morphology between BALB/c and C57BL/6 strains.
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Affiliation(s)
- Loyane Almeida Gama
- Institute of Biosciences, São Paulo State University, UNESP, Botucatu, Brazil
| | | | - Ana Paula Simões Beckmann
- Institute of Biological Sciences and Health, Federal University of Mato Grosso, UFMT, Barra do Garças, Brazil
| | | | | | - Madileine Francely Américo
- Institute of Biosciences, São Paulo State University, UNESP, Botucatu, Brazil.,Institute of Biological Sciences and Health, Federal University of Mato Grosso, UFMT, Barra do Garças, Brazil
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9
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Pessini PGDS, Knox de Souza PR, Chagas CDS, Sampaio EG, Neves DS, Petri G, Fonseca FLA, da Silva EB. Hematological reference values and animal welfare parameters of BALB/C-FMABC ( Mus musculus) inoculated with Ehrlich tumor kept in the vivarium at ABC Medical School. Animal Model Exp Med 2020; 3:32-39. [PMID: 32318657 PMCID: PMC7167238 DOI: 10.1002/ame2.12099] [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: 08/20/2019] [Revised: 11/25/2019] [Accepted: 12/13/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Biochemical and hematological parameters are important tools for assessing the physiological profile of vital organs, and can be recorded to create reference values used for clinical diagnosis of diseases. Many research laboratories lack the means to establish their own set of reference parameters for use in their research, and while there are articles in the literature that discuss laboratory parameters for healthy BALB/c mice, few studies address the evaluation of these parameters in pathological situations, such as in mice inoculated with Ehrlich tumor. METHOD BALB/c-FMABC mice previously inoculated with Ehrlich tumor were maintained under appropriate conditions. Blood samples were taken for analysis of hematological parameters using automated and semi-automated equipment to create a set of the animal welfare parameters for evaluation. RESULT Results were obtained for all the hematological parameters for all groups analyzed. These showed: statistically significant differences between the initial and final tumor weight; comparable initial tumour volume and weight; an increase in leukocytes in the 7-day group with a characteristic predominance of lymphocytes and neutrophils; statistically significant changes in RDW in the 21-day group and in the welfare parameters in the 28-day group. CONCLUSION The study successfully defined and established reference values for hematological and welfare parameters for all groups analyzed.
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Affiliation(s)
- Patrick Gabriel dos Santos Pessini
- Clinical Analysis Laboratory of the ABC University Health CenterSanto AndréBrazil
- Health Sciences Institute/Paulista University – UNIPSão PauloBrazil
| | | | | | - Emily Garcia Sampaio
- Clinical Analysis Laboratory of the ABC University Health CenterSanto AndréBrazil
| | - Daniel Santos Neves
- Clinical Analysis Laboratory of the ABC University Health CenterSanto AndréBrazil
| | - Giuliana Petri
- Clinical Analysis Laboratory of the ABC University Health CenterSanto AndréBrazil
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10
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Cichon I, Ortmann W, Bednarz A, Lenartowicz M, Kolaczkowska E. Reduced Neutrophil Extracellular Trap (NET) Formation During Systemic Inflammation in Mice With Menkes Disease and Wilson Disease: Copper Requirement for NET Release. Front Immunol 2020; 10:3021. [PMID: 32010131 PMCID: PMC6974625 DOI: 10.3389/fimmu.2019.03021] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 12/10/2019] [Indexed: 12/13/2022] Open
Abstract
Neutrophil extracellular traps (NETs) contribute to pathological disorders, and their release was directly linked to numerous diseases. With intravital microscopy (IVM), we showed previously that NETs also contribute to the pathology of systemic inflammation and are strongly deposited in liver sinusoids. Over a decade since NET discovery, still not much is known about the metabolic or microenvironmental aspects of their formation. Copper is a vital trace element essential for many biological processes, albeit its excess is potentially cytotoxic; thus, copper levels are tightly controlled by factors such as copper transporting ATPases, ATP7A, and ATP7B. By employing IVM, we studied the impact of copper on NET formation during endotoxemia in liver vasculature on two mice models of copper excess or deficiency, Wilson (ATP7B mutants) and Menkes (ATP7A mutants) diseases, respectively. Here, we show that respective ATP7 mutations lead to diminished NET release during systemic inflammation despite unaltered intrinsic capacity of neutrophils to cast NETs as tested ex vivo. In Menkes disease mice, the in vivo effect is mostly due to diminished neutrophil infiltration of the liver as unmutated mice with a subchronic copper deficiency release even more NETs than their controls during endotoxemia, whereas in Wilson disease mice, excess copper directly diminishes the capacity to release NETs, and this was further confirmed by ex vivo studies on isolated neutrophils co-cultured with exogenous copper and a copper-chelating agent. Taken together, the study extends our understanding on how microenvironmental factors affect NET release by showing that copper is not a prerequisite for NET release but its excess affects the trap casting by neutrophils.
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Affiliation(s)
- Iwona Cichon
- Department of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Weronika Ortmann
- Department of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Aleksandra Bednarz
- Department of Genetics and Evolutionism, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Malgorzata Lenartowicz
- Department of Genetics and Evolutionism, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Elzbieta Kolaczkowska
- Department of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
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Abstract
Maternal alloimmunization to paternally inherited antigens on fetal/neonatal platelets can cause fetal/neonatal alloimmune thrombocytopenia (FNAIT) after antibody-mediated removal of platelets from the fetal circulation. The complications vary from mild bleeding symptoms to severe intracranial hemorrhage and subsequent neurological impairment or death. Studies on in vivo mechanisms are challenging to measure directly in pregnant women, rendering murine models as valuable and attractive alternatives, despite some critical differences between mice and men affecting the translational value. Here we present and discuss, the different murine models that substantially have increased our knowledge and understanding of FNAIT pathogenesis - as well as pre-clinical evaluation of therapeutic and preventive strategies.
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Affiliation(s)
- Trude Victoria Rasmussen
- Department of Laboratory Medicine, University Hospital of North Norway, Tromsø, Norway; Department of Medical Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Maria Therese Ahlen
- Department of Laboratory Medicine, University Hospital of North Norway, Tromsø, Norway.
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12
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Gil-Avilés MDR, Montes-Avila J, Díaz-Camacho SP, Picos-Salas MA, López-Angulo G, Reynoso-Soto EA, Osuna-Martínez LU, Delgado-Vargas F. Soluble melanins of the Randia echinocarpa fruit - Structural characteristics and toxicity. J Food Biochem 2019; 43:e13077. [PMID: 31608463 DOI: 10.1111/jfbc.13077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/31/2019] [Accepted: 09/30/2019] [Indexed: 11/27/2022]
Abstract
The water-soluble melanins (SM) of Randia echinocarpa fruit possess interesting biological activities and have been scarcely characterized. In this study, SM were obtained at boiling (SMBT) and room (SMRT) temperatures and characterized by UV-Vis, IR, thermogravimetric analysis, and GC-MS of the hydrolysis products of the SM; besides, the solid-state 13 C NMR, elemental analysis, and acute and sub-acute toxicity of the SMBT were determined. SMBT and SMRT contain organic acids and carbohydrates and their spectroscopic signals and thermograms were similar, but the SMBT yield was higher. The SMBT were characterized by their elemental composition (C 48.260 ± 0.011%, N 3.693 ± 0.009% and H 6.093 ± 0.076%) consistent with the presence of aromatic rings and eumelanins, degradation temperature at 300°C, 13 C NMR signals supporting melanin-bonding with carbohydrates and organic acids, and innocuity in Balb/C mice (acute assay, LD50 > 5 g/kg b.w.; sub-acute assay, no lethality at 500 mg/kg b.w. for 30 days). PRACTICAL APPLICATIONS: The consumption of melanins has been associated with health benefits because of their biological activities (e.g., antioxidant, immunostimulatory, UV- and radiation-protective). Randia echinocarpa is employed in Mexican traditional medicine against chronic degenerative diseases (e.g., cancer and diabetes) and ailments of organs (e.g., kidney and lung) and systems (e.g., circulatory and gastrointestinal). The R. echinocarpa fruit contains water-soluble melanins (SM) that inhibit carbohydrate-digestive enzymes and show high antioxidant activity; thus, SM could be useful for the prevention and treatment of diabetes. This study showed that the SM structure contains melanin-bonding organic acids and carbohydrates, which could be associated with the SM solubility and higher yield, and that SMBT were innocuous in the acute and sub-acute assays in mice. Thus, the R. echinocarpa SMBT could be used as safe potential ingredients to develop functional products.
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Affiliation(s)
| | - Julio Montes-Avila
- School of Chemical and Biological Sciences, Autonomous University of Sinaloa, Culiacan, Mexico
| | | | | | - Gabriela López-Angulo
- School of Chemical and Biological Sciences, Autonomous University of Sinaloa, Culiacan, Mexico
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13
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Jyotsana N, Zhang Z, Himmel LE, Yu F, King MR. Minimal dosing of leukocyte targeting TRAIL decreases triple-negative breast cancer metastasis following tumor resection. SCIENCE ADVANCES 2019; 5:eaaw4197. [PMID: 31355333 PMCID: PMC6656540 DOI: 10.1126/sciadv.aaw4197] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 06/17/2019] [Indexed: 05/19/2023]
Abstract
Surgical removal of the primary tumor is a common practice in breast cancer treatment. However, postsurgical metastasis poses an immense setback in cancer therapy. Considering that 90% of cancer-related deaths are due to metastasis, antimetastatic therapeutic strategies that can target disseminating tumor cells in the circulation before they can form secondary tumors hold preclinical and clinical potential for cancer patients. Our current work uses a liposomal formulation functionalized with the adhesion receptor E-selectin and the apoptosis-inducing ligand TNF (tumor necrosis factor)-related apoptosis-inducing ligand (TRAIL) to reduce metastasis following tumor resection in an aggressive triple-negative breast cancer (TNBC) mouse model. We demonstrate that minimal administration of E-selectin-TRAIL liposomes can target metastasis in a TNBC model, with primary tumor resection to mimic clinical settings. Our study indicates that TRAIL liposomes, alone or in combination with existing clinically approved therapies, may neutralize distant metastasis of a broad range of tumor types systemically.
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Affiliation(s)
- Nidhi Jyotsana
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Zhenjiang Zhang
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Lauren E. Himmel
- Department of Pathology, Microbiology and Immunology, Translational Pathology Shared Resource, Vanderbilt University Medical Center, Nashville, TN 37232-258, USA
| | - Fang Yu
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
| | - Michael R. King
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37235, USA
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14
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Aurbach K, Spindler M, Haining EJ, Bender M, Pleines I. Blood collection, platelet isolation and measurement of platelet count and size in mice-a practical guide. Platelets 2018; 30:698-707. [PMID: 30346859 DOI: 10.1080/09537104.2018.1528345] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Inherited or acquired disorders of platelet production and function can result in thrombocytopenia and bleeding. Mouse models have proven useful for investigating the mechanisms that underlie these defects in humans. Precise methods for blood withdrawal, platelet isolation and measurement of platelet parameters are key for the generation of reproducible and conclusive data. Here, we provide three different protocols for mouse platelet isolation to encourage research knowledge transfer between experienced laboratories, while at the same time enabling less experienced researchers to implement a protocol that best suits their local expertise and equipment. We also address the issue that reported mouse platelet count and size vary considerably in the literature by investigating different factors that influence these important platelet parameters, namely: 1) genetic background and gender, 2) choice of analysis method (hematological analyzer or flow cytometry), 3) dilution of the blood sample and 4) choice of anticoagulant. The herein presented results and considerations may serve as a practical guide for both experienced and new researchers in the platelet field.
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Affiliation(s)
- Katja Aurbach
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Markus Spindler
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Elizabeth J Haining
- b Institute of Cardiovascular Science, College of Medical and Dental Sciences , University of Birmingham, Edgbaston , Birmingham , UK
| | - Markus Bender
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
| | - Irina Pleines
- a Institute of Experimental Biomedicine I, University Hospital and Rudolf Virchow Center , University of Würzburg , Würzburg , Germany
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15
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Vukelić-Nikolić MĐ, Najman SJ, Vasiljević PJ, Jevtović-Stoimenov TM, Cvetković VJ, Andrejev MN, Mitić ŽJ. Osteogenic capacity of diluted platelet-rich plasma in ectopic bone-forming model: Benefits for bone regeneration. J Craniomaxillofac Surg 2018; 46:1911-1918. [PMID: 30309795 DOI: 10.1016/j.jcms.2018.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/02/2018] [Accepted: 09/10/2018] [Indexed: 12/24/2022] Open
Abstract
Platelet-rich plasma (PRP) with normal and below-normal physiological concentrations of platelets is designated as diluted PRP (dPRP). The aims of this study are to evaluate whether bone mineral matrix in combination with dPRP possesses osteogenic capacity; and whether the differences in dynamics and osteogenic process pattern depend on different platelet concentrations, to what extent, and also what could be benefits for bone regeneration in clinical practice. Three types of implants were made: BMM-bone mineral matrix alone; dPRP/10-bone mineral matrix mixed with dPRP (concentration of platelets 10 times lower than physiological level) and dPRP/3-bone mineral matrix mixed with dPRP (concentration of platelets 3 times lower than physiological level). A subcutaneous implantation model in Balb/c mice was used. The implants were analyzed using expression analysis of bone-related genes, histochemical, immunohistochemical and histomorphometrical analysis. All types of implants induced creation of necessary preconditions for supporting osteogenic processes, but did not induce visible young bone growth. Implant types dPRP/10 and dPRP/3 showed very similar and significantly better stimulatory effects on osteogenic processes than bone matrix alone. In this study, significant ectopic osteogenic potential of concentration of platelets in PRP that are lower than physiological level in blood plasma in combination with bone mineral matrix was demonstrated. Diluted platelet-rich plasma could be a promising and useful adjuvant therapeutic agent in bone regeneration.
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Affiliation(s)
- Marija Đ Vukelić-Nikolić
- University of Niš, Faculty of Medicine, Department of Biology and Human Genetics; Department for Cell and Tissue Engineering, Blvd. Dr Zoran Djindjić 81, 18108 Niš, Serbia.
| | - Stevo J Najman
- University of Niš, Faculty of Medicine, Department of Biology and Human Genetics; Department for Cell and Tissue Engineering, Blvd. Dr Zoran Djindjić 81, 18108 Niš, Serbia.
| | - Perica J Vasiljević
- University of Niš, Faculty of Sciences and Mathematics, Department of Biology and Ecology, Višegradska 33, 18000 Niš, Serbia.
| | - Tatjana M Jevtović-Stoimenov
- University of Niš, Faculty of Medicine, Department of Biochemistry, Laboratory for Functional Genomics and Proteomics, Blvd. Dr Zoran Djindjić 81, 18108 Niš, Serbia.
| | - Vladimir J Cvetković
- University of Niš, Faculty of Sciences and Mathematics, Department of Biology and Ecology, Višegradska 33, 18000 Niš, Serbia.
| | - Milica N Andrejev
- University of Niš, Faculty of Medicine, Department of Biology and Human Genetics; Department for Cell and Tissue Engineering, Blvd. Dr Zoran Djindjić 81, 18108 Niš, Serbia.
| | - Žarko J Mitić
- University of Niš, Faculty of Medicine, Department of Pharmacy, Blvd. Dr Zoran Djindjić 81, 18108 Niš, Serbia.
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16
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Stagaard R, Flick MJ, Bojko B, Goryński K, Goryńska PZ, Ley CD, Olsen LH, Knudsen T. Abrogating fibrinolysis does not improve bleeding or rFVIIa/rFVIII treatment in a non-mucosal venous injury model in haemophilic rodents. J Thromb Haemost 2018; 16:1369-1382. [PMID: 29758126 PMCID: PMC8040545 DOI: 10.1111/jth.14148] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Indexed: 12/20/2022]
Abstract
Essentials The efficacy of systemic antifibrinolytics for hemophilic non-mucosal bleeding is undetermined. The effect of systemically inhibiting fibrinolysis in hemophilic mice and rats was explored. Neither bleeding nor the response to factor treatment was improved after inhibiting fibrinolysis. The non-mucosal bleeding phenotype in hemophilia A appears largely unaffected by fibrinolysis. SUMMARY Background Fibrinolysis may exacerbate bleeding in patients with hemophilia A (HA). Accordingly, antifibrinolytics have been used to help maintain hemostatic control. Although antifibrinolytic drugs have been proven to be effective in the treatment of mucosal bleeds in the oral cavity, their efficacy in non-mucosal tissues remain an open question of significant clinical interest. Objective To determine whether inhibiting fibrinolysis improves the outcome in non-mucosal hemophilic tail vein transection (TVT) bleeding models, and to determine whether a standard ex vivo clotting/fibrinolysis assay can be used as a predictive surrogate for in vivo efficacy. Methods A highly sensitive TVT model was employed in hemophilic rodents with a suppressed fibrinolytic system to examine the effect of inhibiting fibrinolysis on bleeding in non-mucosal tissue. In mice, induced and congenital hemophilia models were combined with fibrinolytic attenuation achieved either genetically or pharmacologically (tranexamic acid [TXA]). In hemophilic rats, tail bleeding was followed by whole blood rotational thromboelastometry evaluation of the same animals to gauge the predictive value of such assays. Results The beneficial effect of systemic TXA therapy observed ex vivo could not be confirmed in vivo in hemophilic rats. Furthermore, neither intravenously administered TXA nor congenital knockout of the fibrinolytic genes encoding plasminogen or tissue-type plasminogen activator markedly improved the TVT bleeding phenotype or response to factor therapy in hemophilic mice. Conclusions The findings here suggest that inhibition of fibrinolysis is not effective in limiting the TVT bleeding phenotype of HA rodents in non-mucosal tissues.
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Affiliation(s)
- R Stagaard
- Global Drug Discovery, Novo Nordisk A/S, Måløv, Denmark
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Diseases Institute, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - M J Flick
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Diseases Institute, Cincinnati Children's Research Foundation, Cincinnati, OH, USA
| | - B Bojko
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - K Goryński
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - P Z Goryńska
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - C D Ley
- Global Drug Discovery, Novo Nordisk A/S, Måløv, Denmark
| | - L H Olsen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - T Knudsen
- Global Drug Discovery, Novo Nordisk A/S, Måløv, Denmark
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17
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Salazar E, Salazar AM, Taylor P, Ibarra C, Rodríguez-Acosta A, Sánchez E, Pérez K, Brito B, Guerrero B. Pro-inflammatory response and hemostatic disorder induced by venom of the coral snake Micrurus tener tener IN C57BL/6 mice. Toxicon 2018; 150:212-219. [PMID: 29890232 DOI: 10.1016/j.toxicon.2018.06.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 12/20/2022]
Abstract
Micrurus venoms are known to induce mainly neurotoxicity in victims. However, other manifestations, including hemorrhage, edema, myotoxicity, complement activation, and hemostatic activity have been reported. In order to develop a more complete pharmacological profile of these venoms, inflammatory responses and hemostasis were evaluated in C57BL/6 mice treated with a sub-lethal dose of M. t. tener (Mtt) venom (8 μg/mouse), inoculated intraperitoneally. The venom induced moderate bleeding into the abdominal cavity and lungs, as well as infiltration of leukocytes into the liver. After 30 min, the release of pro-inflammatory mediators (TNF-α, IL-6, and NO) were observed, being most evident at 4 h. There was a decrease in hemoglobin and hematocrit levels at 72 h, a prolongation in coagulation times (PT and aPTT), a decrease in the fibrinogen concentration and an increase in fibrinolytic activity. In this animal model, it was proposed that Mtt venom induces inflammation with the release of mediators such as TNF-α, in response to the toxins. These mediators may activate hemostatic mechanisms, producing systemic fibrinolysis and hemorrhage. These findings suggest alternative treatments in Micrurus envenomations in which neurotoxic manifestations do not predominate.
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Affiliation(s)
- Emelyn Salazar
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Ana Maria Salazar
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Peter Taylor
- Laboratorio de Patología Celular y Molecular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Carlos Ibarra
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Alexis Rodríguez-Acosta
- Laboratorio de Inmunoquímica y Ultraestructura, Instituto Anatómico de la Universidad Central de Venezuela, Caracas, Venezuela
| | - Elda Sánchez
- National Natural Toxins Research Center (NNTRC), Texas A&M University-Kingsville, MSC 158, Kingsville, TX 78363, USA
| | - Karin Pérez
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Beatriz Brito
- Laboratorio de Patología Celular y Molecular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Belsy Guerrero
- Laboratorio de Fisiopatología, Centro de Medicina Experimental, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela.
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18
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Abstract
Light transmission aggregometry and lumi-aggregometry are the gold standard platelet assays both clinically and for basic research. The availability of different strains of genetically modified mice and mouse models of human disease means that often laboratories need to use mouse platelets in these assays. Overall, performing aggregometry and lumi-aggregometry with mouse platelets is similar to with human platelets, although methods need be adapted to accommodate their small size, reduced blood volume, and different protein levels. This review aims to highlight these key considerations when planning aggregometry experiments with mouse platelets. These include the method of taking blood, including the use of anticoagulants, as well as the method of platelet preparation, and how to maximize yields. This review also covers how to maximize the number of aggregations that can be performed, both by understanding the minimum requirements of your aggregometer, or by considering new approaches. These include employing high throughput plate-based aggregometry (Optimul), or the use of TPO-mimetics to stimulate platelet production in mice to boost their platelet counts. Finally, phenotypic differences between mouse and human platelets, such as protein expression or sensitivity to agonists are discussed as an important consideration when planning experiments.
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Affiliation(s)
- Craig E Hughes
- a Institute for Cardiovascular and Metabolic Research, School of Biological Sciences , University of Reading , Reading , UK
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19
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Tashima Y, Banno F, Kita T, Matsuda Y, Yanamoto H, Miyata T. Plasminogen Tochigi mice exhibit phenotypes similar to wild-type mice under experimental thrombotic conditions. PLoS One 2017; 12:e0180981. [PMID: 28686706 PMCID: PMC5501636 DOI: 10.1371/journal.pone.0180981] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 06/24/2017] [Indexed: 11/28/2022] Open
Abstract
Plasminogen (Plg) is a precursor of plasmin that degrades fibrin. A race-specific A620T mutation in Plg, also known as Plg-Tochigi, originally identified in a patient with recurrent venous thromboembolism, causes dysplasminogenemia with reduced plasmin activity. The Plg-A620T mutation is present in 3–4% of individuals in East Asian populations, and as many as 50,000 Japanese are estimated to be homozygous for the mutant 620T allele. In the present study, to understand the changes of thrombotic phenotypes in individuals with the mutant 620T allele, we generated knock-in mice carrying the homozygous Plg-A622T mutation (PlgT/T), an equivalent to the A620T mutation in human Plg. PlgT/T mice grew normally but showed severely reduced plasmin activity activated by urokinase, equivalent to ~8% of that in wild-type mice. In vitro fibrin clot lysis in plasma was significantly slower in PlgT/T mice than in wild-type mice. However, all experimental models of electrolytic deep vein thrombosis, tissue factor-induced pulmonary embolism, transient focal brain ischaemic stroke, or skin-wound healing showed largely similar phenotypes between PlgT/T mice and wild-type mice. Protein S-K196E mutation (Pros1E/E) is a race-specific genetic risk factor for venous thromboembolism. Coexistence in mice of PlgT/T and Pros1E/E did not affect pulmonary embolism symptoms, compared with those in Pros1E/E mice. Hence, the present study showed that the Plg-A622T mutation, which confers ~8% plasmin activity, does not increase the risk of thrombotic diseases in mice under experimental thrombotic conditions and does not modify the thrombotic phenotype observed in Pros1E/E mice. PlgT/T mice can be used to investigate the potential pathophysiological impact of the Plg-A620T mutation.
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Affiliation(s)
- Yuko Tashima
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Fumiaki Banno
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Toshiyuki Kita
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Yasuyuki Matsuda
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Hiroji Yanamoto
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
- Laboratory of Neurology and Neurosurgery, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Toshiyuki Miyata
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
- * E-mail:
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20
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Kucheryavykh LY, Dávila-Rodríguez J, Rivera-Aponte DE, Zueva LV, Washington AV, Sanabria P, Inyushin MY. Platelets are responsible for the accumulation of β-amyloid in blood clots inside and around blood vessels in mouse brain after thrombosis. Brain Res Bull 2016; 128:98-105. [PMID: 27908798 DOI: 10.1016/j.brainresbull.2016.11.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 11/21/2016] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Platelets contain beta-amyloid precursor protein (APP) as well as Aβ peptide (Aβ) that can be released upon activation. During thrombosis, platelets are concentrated in clots and activated. METHODS We used in vivo fluorescent analysis and electron microscopy in mice to determine to what degree platelets are concentrated in clots. We used immunostaining to visualize Aβ after photothrombosis in mouse brains. RESULTS Both in vivo results and electron microscopy revealed that platelets were 300-500 times more concentrated in clots than in non-clotted blood. After thrombosis in control mice, but not in thrombocytopenic animals, Aβ immunofluorescence was present inside blood vessels in the visual cortex and around capillaries in the entorhinal cortex. CONCLUSION The increased concentration of platelets allows enhanced release of Aβ during thrombosis, suggesting an additional source of Aβ in the brains of Alzheimer's patients that may arise if frequent micro-thrombosis events occur in their brains.
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Affiliation(s)
- Lilia Y Kucheryavykh
- Department of Biochemistry, School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA.
| | - Josué Dávila-Rodríguez
- School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA.
| | - David E Rivera-Aponte
- Department of Biochemistry, School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA.
| | - Lidia V Zueva
- Department of Physics, University of Puerto Rico Rio Piedras, San Juan, PR 00936, USA.
| | - A Valance Washington
- Department of Anatomy, School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA; The Department of Biology, University of Puerto Rico Rio Piedras, San Juan, PR 00936, USA.
| | - Priscilla Sanabria
- Department of Physiology, School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA.
| | - Mikhail Y Inyushin
- Department of Physiology, School of Medicine, Universidad Central del Caribe, Bayamon, PR 00960-6032, (P.O. Box 60327), USA.
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Percy AJ, Michaud SA, Jardim A, Sinclair NJ, Zhang S, Mohammed Y, Palmer AL, Hardie DB, Yang J, LeBlanc AM, Borchers CH. Multiplexed MRM-based assays for the quantitation of proteins in mouse plasma and heart tissue. Proteomics 2016; 17. [DOI: 10.1002/pmic.201600097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 08/14/2016] [Accepted: 09/28/2016] [Indexed: 12/30/2022]
Affiliation(s)
- Andrew J. Percy
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
| | - Sarah A. Michaud
- MRM Proteomics; , Vancouver Island Technology Park; Victoria BC Canada
| | - Armando Jardim
- Institute of Parasitology; McGill University; Montreal QC Canada
| | - Nicholas J. Sinclair
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
| | - Suping Zhang
- MRM Proteomics; , Vancouver Island Technology Park; Victoria BC Canada
| | - Yassene Mohammed
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
- Center for Proteomics and Metabolomics; Leiden University Medical Center; ZA Leiden Netherlands
| | - Andrea L. Palmer
- MRM Proteomics; , Vancouver Island Technology Park; Victoria BC Canada
| | - Darryl B. Hardie
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
| | - Juncong Yang
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
| | - Andre M. LeBlanc
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
| | - Christoph H. Borchers
- University of Victoria-Genome British Columbia Proteomics Centre; , Vancouver Island Technology Park; Victoria BC Canada
- Department of Biochemistry and Microbiology; University of Victoria; Victoria BC Canada
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Taylor P, Salazar E, Barrios M, Salazar AM, Abad MJ, Urdanibia I, Shealy D, Arocha-Piñango CL, Guerrero B. Role of the inflammatory response in the hemorrhagic syndrome induced by the hemolymph of the caterpillar Lonomia achelous. Toxicon 2016; 121:77-85. [DOI: 10.1016/j.toxicon.2016.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 08/19/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
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Barrios M, Taylor P, Rodríguez-Acosta A, Sánchez EE, Arocha-Piñango CL, Gil A, Salazar AM, Carvajal Z, Abad MJ, Guerrero B. A mouse model to study the alterations in haemostatic and inflammatory parameters induced by Lonomia achelous caterpillar haemolymph. Toxicon 2012; 59:547-54. [PMID: 22310207 DOI: 10.1016/j.toxicon.2012.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 01/17/2012] [Accepted: 01/18/2012] [Indexed: 11/30/2022]
Abstract
A mouse model was established to reproduce the haemorrhagic syndrome which occurs in humans after accidental contact with the hairs of the caterpillar Lonomia achelous (LA) and measures the haemostatic and inflammatory alterations that occur as a result of this contact. Mice were injected intradermally with different doses (0.4, 0.8 and 1.6 mg/animal) of L. achelous haemolymph (LAH). Haematological (haemoglobin, haematocrit, platelet count, differential leukocyte count), haemostatic (fibrinogen, plasminogen, factor XIII [FXIII], fibrinolytic activity) and inflammatory parameters (tumour necrosis factor alpha [TNF-α], nitric oxide [NO]) were measured at different times up to 48 h. C57BL/6 mice responded to LAH injection, in terms of these parameters, in a manner similar to that seen in humans, whereas the BALB/c mice were unresponsive. In C57BL/6 mice injected with LAH, time course measurements showed: a) a reduction in the haemoglobin, haematocrit, fibrinogen, FXIII and plasminogen levels, b) no effect on the platelet count and c) immediate leukocytosis and an increase in the fibrinolytic activity in plasma. An inflammatory response (TNF-α) was observed within 1 h post-injection, followed by a more persistent increase in serum NO. These findings suggest that C57BL/6 mice represent a useful model of the haemorrhagic syndrome observed in humans who have suffered contact with the caterpillar, permitting a deeper understanding of the role of the inflammatory response in the haematological and haemostatic manifestations of this syndrome.
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Affiliation(s)
- M Barrios
- Laboratorio de Fisiopatología-Coagulación Sanguínea, Instituto Venezolano de Investigaciones Científicas, IVIC Apartado 20632, Caracas 1020A, Venezuela
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Carvalho ALN, Annoni R, Silva PRP, Borelli P, Fock RA, Trevisan MTS, Mauad T. Acute, subacute toxicity and mutagenic effects of anacardic acids from cashew (Anacardium occidentale Linn.) in mice. JOURNAL OF ETHNOPHARMACOLOGY 2011; 135:730-736. [PMID: 21511024 DOI: 10.1016/j.jep.2011.04.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 03/09/2011] [Accepted: 04/03/2011] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Anacardium occidentale Linn. (cashew) is a Brazilian plant that is usually consumed in natura and is used in folk medicine. Anacardic acids (AAs) in the cashew nut shell liquid are biologically active as gastroprotectors, inhibitors of the activity of various deleterious enzymes, antitumor agents and antioxidants. Yet, there are no reports of toxicity testing to guarantee their use in vivo models. MATERIALS AND METHODS We evaluated AAs biosafety by measuring the acute, subacute and mutagenic effects of AAs administration in BALB/c mice. In acute tests, BALB/c mice received a single oral dose of 2000 mg/kg, whereas animals in subacute tests received 300, 600 and 1000 mg/kg for 30 days. Hematological, biochemical and histological analyses were performed in all animals. Mutagenicity was measured with the acute micronucleus test 24h after oral administration of 250 mg/kg AAs. RESULTS Our results showed that the AAs acute minimum lethal dose in BALB/c mice is higher than 2000 mg/kg since this concentration did not produce any symptoms. In subacute tests, females which received the highest doses (600 or 1000 mg/kg) were more susceptible, which was seen by slightly decreased hematocrit and hemoglobin levels coupled with a moderate increase in urea. Anacardic acids did not produce any mutagenic effects. CONCLUSIONS The data indicate that doses less than 300 mg/kg did not produce biochemical and hematological alterations in BALB/c mice. Additional studies must be conducted to investigate the pharmacological potential of this natural substance in order to ensure their safe use in vivo.
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Affiliation(s)
- Ana Laura Nicoletti Carvalho
- Experimental Atmospheric Pollution Laboratory (LPAE), Department of Pathology, São Paulo Medical School, University of São Paulo, Av Dr Arnaldo 455, Room 1155, 01246-903 São Paulo, SP, Brazil.
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Zivkovic I, Stojanovic M, Petrusic V, Inic-Kanada A, Dimitrijevic L. Induction of APS after TTd hyper-immunization has a different outcome in BALB/c and C57BL/6 mice. Am J Reprod Immunol 2010; 65:492-502. [PMID: 21029246 DOI: 10.1111/j.1600-0897.2010.00922.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
PROBLEM The antiphospholipid syndrome (APS) is a systemic autoimmune disease characterized by vascular thrombosis and/or pregnancy complications (lower fecundity and lower litter size), as well as by an increase in anti-β(2) glycoprotein I (β(2) GPI)-specific autoantibody titer. We have investigated how the genetic background of the immune system [T helper (Th) prevalence] and the type of animal model of APS influence the induced pathology. METHOD OF STUDY Antiphospholipid syndrome induced by tetanus toxoid (TTd) hyper-immunization and by intravenous application of monoclonal anti-β(2) GPI-specific antibody 26 was compared in C57BL/6 (Th1 prone) and BALB/c (Th2 prone) mice. RESULTS Tetanus toxoid hyper-immunization of BALB/c mice led to reduction in fertility, but in C57BL/6 mice a decrease in fecundity occurred. In both cases, pathology was caused by anti-β(2) GPI antibodies, the production of which was adjuvant and strain dependent. CONCLUSION We conclude that TTd immunization and i.v. application of monoclonal antibody 26 induced the same reproductive pathology and that the type of pathology is strain dependent.
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Affiliation(s)
- Irena Zivkovic
- Institute of Virology, Vaccines and Sera - Torlak, Belgrade, Serbia.
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