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The effects of 201Tl myocardial perfusion scintigraphy studies on oxidative damage in patients / Efectos de los estudios de escintigrafía de perfusión miocárdica 201Tl sobre el daño oxidativo en los pacientes
Cicek, E; Yildiz, M; Delibas, N; Bahçeli, S.
  • Cicek, E; Mehmet Akif Ersoy University. Departments of Physics, Faculty of Arts and Science. Burdur. TR
  • Yildiz, M; Mehmet Akif Ersoy University. Departments of Physics, Faculty of Arts and Science. Burdur. TR
  • Delibas, N; Mehmet Akif Ersoy University. Departments of Physics, Faculty of Arts and Science. Burdur. TR
  • Bahçeli, S; Mehmet Akif Ersoy University. Departments of Physics, Faculty of Arts and Science. Burdur. TR
West Indian med. j ; 58(1): 50-53, Jan. 2009. graf, tab
Article in English | LILACS | ID: lil-672435
ABSTRACT
The aim of this study was to investigate gamma radiation-induced oxidative damage in erythrocytes after 201Tl myocardial perfusion scintigraphy. Twenty patients (8 women and 12 men) who performed 201Tl myocardial perfusion scintigraphy were included in this study. The blood samples were taken from patients just before, 1 hour after and three hours after injection of the radiopharmaceutical. Malon-dialdehyde (MDA) and antioxidant enzymes such as glutathione peroxidase (GPX), superoxide dismutase (SOD) and catalase (CAT) levels were measured to evaluate the gamma radiation induced oxidative damage. The enzyme activities of SOD, GPX and CAT were decreased 1 hour after (p = 0.042, p = 0. 697 and p = 0.653 respectively) and 3 hours after (p = 0.003, p = 0. 573 and p = 0.002 respectively) injection of the radiopharmaceutical. Malondialdehyde levels were increased 1 hour after (p = 0.10) and 3 hours after (p = 0.47) injection of the radiopharmaceutical. In this study, we found that radiation due to 201Tl myocardial perfusion scintigraphy decreased the erythrocyte antioxidant levels and increased MDA levels.
RESUMEN
El objetivo de este estudio fue investigar el daño oxidativo inducido por radiaciones gamma, sobre los eritrocitos luego de realizada una escintigrafía de perfusión miocárdica 201Tl. Veinte pacientes (8 mujeres y 12 hombres) a quienes se les realizó escintigrafía por perfusión miocárdica 201Tl, fueron incluidos en este estudio. Las muestras de sangre fueron tomadas de los pacientes antes, 1 hora más tarde, y tres horas después de inyectar el radiofármaco. Se midieron los niveles del malondialdehido (MDA) y las enzimas antioxidantes tales como la glutationa peroxidasa (GPX), superóxido dismutasa (SOD), y la catalasa (CAT), a fin de evaluar el daño oxidativo inducido por la radiación gamma. Las actividades de las enzimas SOD, GPX y CAT fueron disminuidas 1 horas después (p = 0.042, p = 0. 697 y p = 0.653 respectivamente) y tres horas (p = 0.003, p = 0. 573 y p = 0.002 respectivamente) tras la inyección del radiofármaco. Los niveles de malondialdehido fueron aumentados 1 hora después (p = 0.10) y tres horas después (p = 0.47) de la inyección del radiofármaco. En este estudio, hallamos que la radiación a causa de la escintigrafía de perfusión miocárdica 201Tl disminuyó los niveles antioxidantes del eritrocito y aumentó los niveles de MDA.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Thallium Radioisotopes / Radiopharmaceuticals / Coronary Disease / Erythrocytes Limits: Adult / Aged / Female / Humans / Male Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2009 Type: Article Affiliation country: Turkey Institution/Affiliation country: Mehmet Akif Ersoy University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Thallium Radioisotopes / Radiopharmaceuticals / Coronary Disease / Erythrocytes Limits: Adult / Aged / Female / Humans / Male Language: English Journal: West Indian med. j Journal subject: Medicine Year: 2009 Type: Article Affiliation country: Turkey Institution/Affiliation country: Mehmet Akif Ersoy University/TR