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Pires DAT, Tacca LMRA, Aslan JE, Murad AM, Nascimento CJ, Barbosa EA, Bloch C. Novel disintegrin-like peptides derived from an amphibian skin cDNA sequence of Hypsiboas punctatus. J Pept Sci 2021; 28:e3382. [PMID: 34859535 DOI: 10.1002/psc.3382] [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: 09/13/2021] [Revised: 10/25/2021] [Accepted: 11/07/2021] [Indexed: 11/11/2022]
Abstract
Disintegrins comprise a family of small proteins that bind to and alter the physiological function of integrins, especially integrins that mediate platelet aggregation in blood. Here, we report a lysine-glycine-aspartic acid (KGD) disintegrin-like motif present in a 15-amino acid residue peptide identified in a cDNA library of the amphibian Hypsiboas punctatus skin. The original peptide sequence was used as a template from which five new analogs were designed, chemically synthesized by solid phase, and tested for disintegrin activity and tridimensional structural studies using NMR spectroscopy. The original amphibian peptide had no effect on integrin-mediated responses. Nevertheless, derived peptide analogs inhibited integrin-mediated platelet function, including platelet spreading on fibrinogen.
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Affiliation(s)
- Diego A T Pires
- Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG), Luziânia, Brazil
| | - Luisa M R A Tacca
- Laboratório de Espectrometria de Massa, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
| | - Joseph E Aslan
- Knight Cardiovascular Institute, Division of Cardiology, Department of Medicine, Oregon Health & Science University, Portland, Oregon, USA
| | - André M Murad
- Laboratório de Espectrometria de Massa, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
| | - Claudia J Nascimento
- Instituto de Biociências, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil
| | - Eder A Barbosa
- Laboratório de Espectrometria de Massa, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
| | - Carlos Bloch
- Laboratório de Espectrometria de Massa, Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil
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Oliveira ISD, Pucca MB, Wiezel GA, Cardoso IA, Bordon KDCF, Sartim MA, Kalogeropoulos K, Ahmadi S, Baiwir D, Nonato MC, Sampaio SV, Laustsen AH, Auf dem Keller U, Quinton L, Arantes EC. Unraveling the structure and function of CdcPDE: A novel phosphodiesterase from Crotalus durissus collilineatus snake venom. Int J Biol Macromol 2021; 178:180-192. [PMID: 33636276 DOI: 10.1016/j.ijbiomac.2021.02.120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/13/2021] [Accepted: 02/15/2021] [Indexed: 01/20/2023]
Abstract
This study reports the isolation, structural, biochemical, and functional characterization of a novel phosphodiesterase from Crotalus durissus collilineatus venom (CdcPDE). CdcPDE was successfully isolated from whole venom using three chromatographic steps and represented 0.7% of total protein content. CdcPDE was inhibited by EDTA and reducing agents, demonstrating that metal ions and disulfide bonds are necessary for its enzymatic activity. The highest enzymatic activity was observed at pH 8-8.5 and 37 °C. Kinetic parameters indicated a higher affinity for the substrate bis(p-nitrophenyl) phosphate compared to others snake venom PDEs. Its structural characterization was done by the determination of the protein primary sequence by Edman degradation and mass spectrometry, and completed by the building of molecular and docking-based models. Functional in vitro assays showed that CdcPDE is capable of inhibiting platelet aggregation induced by adenosine diphosphate in a dose-dependent manner and demonstrated that CdcPDE is cytotoxic to human keratinocytes. CdcPDE was recognized by the crotalid antivenom produced by the Instituto Butantan. These findings demonstrate that the study of snake venom toxins can reveal new molecules that may be relevant in cases of snakebite envenoming, and that can be used as molecular tools to study pathophysiological processes due to their specific biological activities.
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Affiliation(s)
- Isadora Sousa de Oliveira
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | | | - Gisele Adriano Wiezel
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Iara Aimê Cardoso
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Karla de Castro Figueiredo Bordon
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marco Aurélio Sartim
- Institute of Biological Sciences, Federal University of Amazonas, Manaus, AM, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, AM, Brazil
| | | | - Shirin Ahmadi
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Dominique Baiwir
- Mass Spectrometry Laboratory, MolSys Research Unit, Department of Chemistry, University of Liège, Liège, Belgium; GIGA Proteomics Facility, University of Liège, Liège, Belgium
| | - Maria Cristina Nonato
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Suely Vilela Sampaio
- Department of Clinical Analysis, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Andreas Hougaard Laustsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ulrich Auf dem Keller
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Loïc Quinton
- Mass Spectrometry Laboratory, MolSys Research Unit, Department of Chemistry, University of Liège, Liège, Belgium
| | - Eliane Candiani Arantes
- Department of BioMolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Ameziani M, Chérifi F, Kiheli H, Saoud S, Hariti G, Kellou-Taîri S, Laraba-Djebari F. Isolation and Functional Identification of an Antiplatelet RGD-Containing Disintegrin from Cerastes cerastes Venom. Protein J 2020; 39:574-590. [PMID: 32960374 DOI: 10.1007/s10930-020-09915-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2020] [Indexed: 11/30/2022]
Abstract
The current report focuses on purification, structural and functional characterization of Cerastategrin from Cerastes cerastes venom, a novel basic disintegrin (pI 8.36) with 128 amino acid residues and a molecular weight of 13 835.25 Da measured by MALDI-MSMS. The 3D structure of Cerastategrin is organized as α-helix (13%), β-strand (15%) and disordered structure (30%) and presents homologies with several snake venom disintegrins. Structural modeling shows that Cerastategrin presents an RGD motif that connects specifically to integrin receptors. Cerastategrin exhibits the inhibition of ADP induced platelets with an IC50 of 0.88 µg/mL and shows in vivo long stable anticoagulation effect 24 h post-injection of increasing doses ranging from 0.2 to 1 mg/kg, therefore, Cerastategrin maintained irreversibly the blood incoagulable. Moreover, Cerastategrin decreases the amount of bounded αIIbβ3 and reduced significantly the quantity of externalized P-Selectin. Cerastategrin acts as a molecule targeting specifically the receptor αIIbβ3; therefore, it behaves as a potent platelet activation inhibitor. As a new peptide with promising pharmacological properties, Cerastategrin could have a potential therapeutical effect in the vascular pathologies and may be a new effective treatment approach.
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Affiliation(s)
- Meriem Ameziani
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatah Chérifi
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Hamida Kiheli
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Samah Saoud
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Ghania Hariti
- Faculty of Medicine, Blood Transfusion Center, Unverisity of Benyoucef Benkheda Algiers 1, CHU Bab El-Oued, Algiers, Algeria
| | - Safia Kellou-Taîri
- USTHB, Laboratory of Theoretical Physico-Chemistry and Computer Chemistry, Faculty of Chemistry, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria.
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Qu Q, Liu Y, Yan X, Fan X, Liu N, Wu G. A Novel Pentapeptide Targeting Integrin β3-Subunit Inhibits Platelet Aggregation and Its Application in Rat for Thrombosis Prevention. Front Pharmacol 2016; 7:49. [PMID: 27014063 PMCID: PMC4782163 DOI: 10.3389/fphar.2016.00049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/22/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Qingrong Qu
- Department and Institute of Cardiology, Zhongda Hospital, Medical School of Southeast UniversityNanjing, China
| | - Yamin Liu
- Center of Clinical Laboratory Medicine of Zhongda Hospital, Institute of Biotechnology and Clinical Pharmacy, Southeast UniversityNanjing, China
- Pharmacy Department of Zhongda Hospital, Southeast UniversityNanjing, China
| | - Xuejiao Yan
- Department and Institute of Cardiology, Zhongda Hospital, Medical School of Southeast UniversityNanjing, China
| | - Xiaobo Fan
- Center of Clinical Laboratory Medicine of Zhongda Hospital, Institute of Biotechnology and Clinical Pharmacy, Southeast UniversityNanjing, China
| | - Naifeng Liu
- Department and Institute of Cardiology, Zhongda Hospital, Medical School of Southeast UniversityNanjing, China
- Naifeng Liu
| | - Guoqiu Wu
- Center of Clinical Laboratory Medicine of Zhongda Hospital, Institute of Biotechnology and Clinical Pharmacy, Southeast UniversityNanjing, China
- *Correspondence: Guoqiu Wu
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Oyama E, Takahashi H. Purification and characterization of two high molecular mass snake venom metalloproteinases (P-III SVMPs), named SV-PAD-2 and HR-Ele-1, from the venom of Protobothrops elegans (Sakishima-habu). Toxicon 2015; 103:30-8. [PMID: 26100665 DOI: 10.1016/j.toxicon.2015.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 06/08/2015] [Accepted: 06/08/2015] [Indexed: 11/15/2022]
Abstract
We herein identified two high molecular mass metalloproteinases, named SV-PAD-2 and HR-Ele-1, in the venom of Protobothrops elegans. HR-Ele-1 appeared as a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) regard under reducing and non-reducing conditions, and the molecular mass of this protease was approximately 60 kDa under reducing conditions. On the other hand, the molecular masses of SV-PAD-2 on SDS-PAGE were 110 kDa under the non-reducing condition and 52 kDa under the reducing condition. These SVMPs exhibited fibrinogenolytic and enzymatic activities against synthetic substrates for matrix metalloproteinases (MMPs) and the insulin B-chain, and were both inhibited by EDTA. SV-PAD-2 inhibited ADP- and collagen-induced platelet aggregation, with IC50 values of 240 nM and 185 nM, respectively. HR-Ele-1 exhibited hemorrhagic activity, and its minimum hemorrhagic dose (MHD) was 0.05 μg in the guinea pig.
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Affiliation(s)
- Etsuko Oyama
- Department of Hygienic Chemistry, Meiji Pharmaceutical University, Japan.
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Isolation and Characterization of a Novel Antithrombotic Peptide from Enzymatic Hydrolysate of Agkistrodon acutus Venom. Int J Pept Res Ther 2015. [DOI: 10.1007/s10989-015-9463-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mitra J, Bhattacharyya D. Phosphodiesterase from Daboia russelli russelli venom: purification, partial characterization and inhibition of platelet aggregation. Toxicon 2014; 88:1-10. [PMID: 24932740 DOI: 10.1016/j.toxicon.2014.06.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 05/30/2014] [Accepted: 06/05/2014] [Indexed: 11/29/2022]
Abstract
Phosphodiesterases (PDEs) belong to a super-family of enzymes that have multiple roles in the metabolism of extracellular nucleotides and regulation of nucleotide-based intercellular signalling. A PDE from Russell's viper (Daboia russelli russelli) venom (DR-PDE) was purified by gel filtration, ion exchange and affinity chromatographies. Homogeneity of the preparation was verified by SDS-PAGE, SE-HPLC and mass spectrometry. It was free from 5'-nucleotidase, alkaline phosphatase and protease activities. Identity of the enzyme was ensured from partial sequence homology with other PDEs. DR-PDE was inactivated by polyvalent anti-venom serum and metal chelators. The enzyme was partially inhibited by the root extracts of four medicinal plants but remained unaffected by inhibitors of intracellular PDEs. DR-PDE hydrolyses ADP and thus, strongly inhibits ADP-induced platelet aggregation in human platelet rich plasma. This study leads to better understanding of a component of Russell's viper venom that affects homoeostatic system of the victim.
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Affiliation(s)
- Jyotirmoy Mitra
- Division of Structural Biology and Bioinformatics, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata, West Bengal 700032, India
| | - Debasish Bhattacharyya
- Division of Structural Biology and Bioinformatics, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata, West Bengal 700032, India.
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Purification and partial characterization of a novel fibrinogenase from the venom of Deinagkistrodon acutus: inhibition of platelet aggregation. Protein Expr Purif 2014; 99:99-105. [PMID: 24755064 DOI: 10.1016/j.pep.2014.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/10/2014] [Accepted: 04/11/2014] [Indexed: 11/20/2022]
Abstract
A novel fibrinogenase, DAnase, was purified from the venom of Deinagkistrodon acutus by a combination of anion and cation exchange chromatography. Unlike other fibrinogenases which are usually single polypeptide chain proteins, the enzyme was a disulfide-linked dimer with an isoelectric point of 6.03 and an apparent molecular weight of 25kDa on SDS-polyacrylamide gel electrophoresis. DAnase showed α-fibrinogenase activity devoid of fibrinolytic activity. It hydrolyzed rapidly the Aα-chain of fibrinogen and followed by the Bβ-chain and did not cleave the γ-chain. It also exhibited arginine esterase activity. The fibrinogenolytic and arginine esterase activities were completely inhibited by phenylmethanesulfonyl fluoride or tris-(2-carboxyethyl)phosphine hydrochloride, but not by EDTA, indicating that DAnase is a serine protease requiring disulfide bridge(s) for its activity. The protease strongly inhibited ADP-induced platelet aggregation in human platelet-rich plasma but was lack of ADPase activity, indicating that its fibrinogenolytic activity is involved in its inhibition of ADP-induced platelet aggregation. DAnase was devoid of hemorrhagic activity and Factor XIII activation activity. DAnase may have a potential clinical application for the therapy of thrombosis disease.
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Kong Y, Xu C, He ZL, Zhou QM, Wang JB, Li ZY, Ming X. A novel peptide inhibitor of platelet aggregation from stiff silkworm, Bombyx batryticatus. Peptides 2014; 53:70-8. [PMID: 24361453 DOI: 10.1016/j.peptides.2013.12.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 12/04/2013] [Accepted: 12/04/2013] [Indexed: 11/18/2022]
Abstract
A novel platelet aggregation inhibitory peptide, named BB octapeptide, was isolated from stiff silkworm (Bombyx batryticatus) by gel filtration, anion-exchange, and reverse-phase high performance liquid chromatography. The molecular mass of the peptide was determined to be 885 Da using electrospray ionization mass spectrometry, and the sequence was identified as Asp-Pro-Asp-Ala-Asp-IIe-Leu-Gln using the Edman degradation method. To test its biological activity, the peptide was chemically synthesized using Fmoc solid-phase synthesis method. BB octapeptide inhibited rabbit platelet aggregation that was induced by collagen and epinephrine, with the IC50 values of 91.14 μM and 104.50 μM, respectively. After intravenous administrated in mice (30 mg/kg, 4 days), BB octapeptide showed similar ex vivo efficacy of inhibiting platelet aggregation as aspirin (10 mg/kg). In addition, this peptide prevented paralysis and death in pulmonary thromboembolism model and significantly reduced ferric chloride-induced thrombus formation in rats. Moreover, it exhibited low cytotoxicity in a cellular model. In conclusion, this is the first report that a novel platelet aggregation inhibitory peptide was isolated from stiff silkworm (B. batryticatus). Due to the excellent efficacy in reducing platelet aggregation and low toxicity, it can be a valuable lead compound for new drug design and development.
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Affiliation(s)
- Yi Kong
- School of Life Science & Technology, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Cheng Xu
- School of Life Science & Technology, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Zhi-Long He
- School of Life Science & Technology, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Qiu-Mei Zhou
- School of Life Science & Technology, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Jin-Bin Wang
- School of Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Zhi-Yu Li
- School of Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Xin Ming
- Division of Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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Protobothrops mangshanensis bite: first clinical report of envenoming and its treatment. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2012; 156:183-5. [DOI: 10.5507/bp.2012.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Long LH, Cao YX, Ma Z, Liu J. Anticoagulant, anti-aggregation and antithrombotic effects of a novel hexapeptide. J Pharm Pharmacol 2011; 63:1454-61. [PMID: 21988426 DOI: 10.1111/j.2042-7158.2011.01348.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Hexapeptide is a novel synthetic oligopeptide with a structure similar to that of eptifibatide. This study was designed to investigate the anticoagulant, anti-aggregation, disaggregation and anti-thrombogenesis effects of hexapeptide. METHODS The effects of antiplatelet aggregation induced by adenosine diphosphate (ADP), arachidonic acid (AA) and thrombin, and the effect of disaggregation of platelet aggregation induced by ADP were determined. The anticoagulation indexes were determined by different kits. KEY FINDINGS Hexapeptide 1 × 10(-5) -1 × 10(-4) m could significantly prolong rabbit blood clotting time, thrombin time, prothrombin time and activated partial thromboplastin enzyme time, and reduce the length, wet weight, dry weight and the index of thrombus in a concentration-dependent manner. Hexapeptide 1 × 10(-4) m decreased platelet adhesion rate by 40.2%. The platelet aggregation inhibition of hexapeptide in dogs and humans was more obvious than in rabbits and rats. The aggregation inhibition rate of 1 × 10(-5) m hexapeptide in dogs, rabbits, rats and humans induced by ADP was 93.9 ± 1.3%, 66.2 ± 1.4%, 76.1 ± 3.2% and 99.8 ± 0.2%, respectively; the 50% inhibitory concentration (IC50) of hexapeptide was 7.24 × 10(-8), 3.24 × 10(-6), 6.61 × 10(-6) and 8.91 × 10(-8) m, respectively. For the aggregation inhibition rate of hexapeptide in dogs, rabbits and humans induced by AA, the IC50 was 1.29 × 10(-9), 1.32 × 10(-6) and 9.33 × 10(-8) m, respectively; the IC50 of aggregation inhibition rates induced by thrombin was 2.88 × 10(-6), >1 × 10(-5) and 4.17 × 10(-6) m, respectively. The disaggregation rate of 1 × 10(-4) m hexapeptide in dog induced by ADP was 68.8 ± 7.4%. CONCLUSIONS Hexapeptide has anticoagulant, antiplatelet aggregation, disaggregation and antithrombotic effects in vitro.
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Affiliation(s)
- Li-hui Long
- Department of Pharmacy, Affiliated Hospital of Xi'an Medical College, China
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Purification and partial characterization of a novel phosphodiesterase from the venom of Trimeresurus stejnegeri: Inhibition of platelet aggregation. Biochimie 2011; 93:1601-9. [DOI: 10.1016/j.biochi.2011.05.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2011] [Accepted: 05/25/2011] [Indexed: 01/25/2023]
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