Anticoagulants affect matrix metalloproteinase 9 levels in blood samples of stroke patients and healthy controls
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Anticoagulants affect matrix metalloproteinase 9 levels in blood samples of stroke patients and healthy controls. / Rababah, Munir; Worthmann, Hans; Deb-Chatterji, Milani; Tryc, Anita B; Ma, Yue Tao; El Bendary, Omnia M; Hecker, Hartmut; Goldbecker, Annemarie; Heeren, Meike; Brand, Korbinian; Weissenborn, Karin; Lichtinghagen, Ralf.
in: CLIN BIOCHEM, Jahrgang 45, Nr. 6, 04.2012, S. 483-9.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Anticoagulants affect matrix metalloproteinase 9 levels in blood samples of stroke patients and healthy controls
AU - Rababah, Munir
AU - Worthmann, Hans
AU - Deb-Chatterji, Milani
AU - Tryc, Anita B
AU - Ma, Yue Tao
AU - El Bendary, Omnia M
AU - Hecker, Hartmut
AU - Goldbecker, Annemarie
AU - Heeren, Meike
AU - Brand, Korbinian
AU - Weissenborn, Karin
AU - Lichtinghagen, Ralf
N1 - Copyright © 2012 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.
PY - 2012/4
Y1 - 2012/4
N2 - OBJECTIVES: Matrix metalloproteinase-9 (MMP-9) represents a promising marker for acute stroke management. In clinical studies MMP-9 has been quantified by ELISA using differing protocols. We aimed to establish a valid protocol by evaluation of preanalytics.DESIGN AND METHODS: Blood from stroke patients (n=28) and healthy controls (n=28) was drawn into tubes containing different anticoagulants (EDTA, citrate, lithium-heparin (heparin) and heparin with proteinase inhibitors) and processed after 0, 60 and 240 min. MMP-9 plasma protein and mRNA from mononuclear leukocytes were determined.RESULTS: In regard to anticoagulants used, samples showed different MMP-9 protein baseline values and kinetics. Stable MMP-9 protein concentrations were only measured from EDTA samples. Particularly in samples with proteinase inhibitors protein and mRNA concentrations increased over time. Kinetics did not differ between patients and controls.CONCLUSIONS: Preanalytics plays a key role for determination of MMP-9. EDTA seems to be a valid anticoagulant for MMP-9 protein measurement.
AB - OBJECTIVES: Matrix metalloproteinase-9 (MMP-9) represents a promising marker for acute stroke management. In clinical studies MMP-9 has been quantified by ELISA using differing protocols. We aimed to establish a valid protocol by evaluation of preanalytics.DESIGN AND METHODS: Blood from stroke patients (n=28) and healthy controls (n=28) was drawn into tubes containing different anticoagulants (EDTA, citrate, lithium-heparin (heparin) and heparin with proteinase inhibitors) and processed after 0, 60 and 240 min. MMP-9 plasma protein and mRNA from mononuclear leukocytes were determined.RESULTS: In regard to anticoagulants used, samples showed different MMP-9 protein baseline values and kinetics. Stable MMP-9 protein concentrations were only measured from EDTA samples. Particularly in samples with proteinase inhibitors protein and mRNA concentrations increased over time. Kinetics did not differ between patients and controls.CONCLUSIONS: Preanalytics plays a key role for determination of MMP-9. EDTA seems to be a valid anticoagulant for MMP-9 protein measurement.
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Anticoagulants
KW - Artifacts
KW - Blood Chemical Analysis
KW - Case-Control Studies
KW - Citric Acid
KW - Enzyme Stability
KW - Female
KW - Heparin
KW - Humans
KW - Leukocytes, Mononuclear
KW - Male
KW - Matrix Metalloproteinase 9
KW - Middle Aged
KW - RNA, Messenger
KW - Statistics, Nonparametric
KW - Stroke
KW - Transcription, Genetic
KW - Journal Article
U2 - 10.1016/j.clinbiochem.2012.01.028
DO - 10.1016/j.clinbiochem.2012.01.028
M3 - SCORING: Journal article
C2 - 22342361
VL - 45
SP - 483
EP - 489
JO - CLIN BIOCHEM
JF - CLIN BIOCHEM
SN - 0009-9120
IS - 6
ER -