In vitro cysteine reactivates organophosphate insecticide dichlorvos-inhibited human cholinesterases
العناوين الأخرى
الإضافة للسيستين يعيد تنشيط أنزيم كولينستراز البشري التي يثبطها مبيد الحشرات العضوية الفوسفاتية الديكلوروفوس
المؤلفون المشاركون
Muhammadi, Hamid Rida
Jaliliyan, Jafar
Karimi, Muhammad Yahya
Shitab Bu Shihri, Sayyid V.
المصدر
Sultan Qaboos University Medical Journal
العدد
المجلد 17، العدد 3 (31 أغسطس/آب 2017)، ص ص. 293-300، 8ص.
الناشر
جامعة السلطان قابوس كلية الطب و العلوم الصحية
تاريخ النشر
2017-08-31
دولة النشر
سلطنة عمان
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Objectives : Organophosphate (OP) pesticides inhibit both red blood cell (RBC) and plasma cholinesterases (ChEs).
Oximes, especially pralidoxime (2-PAM), are widely used as antidotes to treat OP poisoning.
In addition, N-acetylcysteine (NAC) is sometimes used as an adjuvant antidote.
The current study aimed to assess the feasibility of using NAC as a single therapeutic agent for OP poisoning in comparison to in vitro 2-PAM.
Methods: This study was carried out at the Razi Drug Research Center of Iran University of Medical Sciences, Tehran, Iran, between April and September 2014.
A total of 22 healthy human subjects were recruited and 8 mL citrated blood samples were drawn from each subject.
Dichlorvos-inhibited blood samples were separately exposed to low and high doses (final concentrations of 300 and 600 μmol.L-1, respectively) of 2-PAM, NAC and cysteine.
Plasma and RBCs were then separated by centrifugation and their ChE activity was measured using spectrophotometry.
Results : Although cysteine—and not NAC—increased the ChE activity of both plasma and RBCs over those of dichlorvos, it did not increase them over those of a high dose of 2-PAM.
Conclusion: These results suggest that the direct reactions of 2-PAM and cysteine with dichlorvos and the reactivation of phosphorylated ChEs occurr via an associative stepwise addition-elimination process.
High therapeutic blood concentrations of cysteine are needed for the elevation of ChE activity in plasma and RBCs; however, both this agent and NAC may still be effective in the reactivation of plasma and RBC ChEs.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Muhammadi, Hamid Rida& Jaliliyan, Jafar& Karimi, Muhammad Yahya& Shitab Bu Shihri, Sayyid V.. 2017. In vitro cysteine reactivates organophosphate insecticide dichlorvos-inhibited human cholinesterases. Sultan Qaboos University Medical Journal،Vol. 17, no. 3, pp.293-300.
https://search.emarefa.net/detail/BIM-839746
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Muhammadi, Hamid Rida…[et al.]. In vitro cysteine reactivates organophosphate insecticide dichlorvos-inhibited human cholinesterases. Sultan Qaboos University Medical Journal Vol. 17, no. 3 (Aug. 2017), pp.293-300.
https://search.emarefa.net/detail/BIM-839746
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Muhammadi, Hamid Rida& Jaliliyan, Jafar& Karimi, Muhammad Yahya& Shitab Bu Shihri, Sayyid V.. In vitro cysteine reactivates organophosphate insecticide dichlorvos-inhibited human cholinesterases. Sultan Qaboos University Medical Journal. 2017. Vol. 17, no. 3, pp.293-300.
https://search.emarefa.net/detail/BIM-839746
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 299-300
رقم السجل
BIM-839746
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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