کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4178678 1276508 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nicotine Blocks Brain Estrogen Synthase (Aromatase): In Vivo Positron Emission Tomography Studies in Female Baboons
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
Nicotine Blocks Brain Estrogen Synthase (Aromatase): In Vivo Positron Emission Tomography Studies in Female Baboons
چکیده انگلیسی

BackgroundCigarette smoking and nicotine have complex effects on human physiology and behavior, including some effects similar to those elicited by inhibition of aromatase, the last enzyme in estrogen biosynthesis. We report the first in vivo primate study to determine whether there is a direct effect of nicotine administration on brain aromatase.MethodsBrain aromatase availability was examined with positron emission tomography and the selective aromatase inhibitor [11C]vorozole in six baboons before and after exposure to IV nicotine at .015 and .03 mg/kg.ResultsNicotine administration produced significant, dose-dependent reductions in [11C]vorozole binding. The amygdala and preoptic area showed the largest reductions. Plasma levels of nicotine and its major metabolite cotinine were similar to those found in cigarette smokers.ConclusionsNicotine interacts in vivo with primate brain aromatase in regions involved in mood, aggression, and sexual behavior.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Psychiatry - Volume 67, Issue 8, 15 April 2010, Pages 774–777
نویسندگان
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