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383385 occurrences (No.47 in the rank) during 5 years in the PubMed. [cache]

253) When varenicline and nicotine were repeatedly administered sequentially, varenicline blocked the development and expression of nicotine-induced sensitization.

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PMID:24251901 DOI:10.1111/adb.12108

2015 Addiction biology

* The effect of varenicline on the development and expression of nicotine-induced behavioral sensitization and cross-sensitization in rats.

- The present study focused on the evaluation of behavioral sensitization and cross-sensitization induced by nicotine and varenicline in rats. Furthermore, it examined the influence of varenicline, a partial alpha4beta2 nicotinic receptor agonist, on nicotine-induced sensitization. To assess the development of behavioral sensitization, rats were chronically treated with vehicle, varenicline (0.03-3.0 mg/kg), nicotine (0.4 mg/kg) or combinations for 5 days and locomotor activity was measured. The expression of sensitization was assessed following a withdrawal period (17-26 days). The present results confirmed previous data showing the development and expression of nicotine-induced sensitization of locomotor activity in the rat. Varenicline did not induce sensitization on its own. When varenicline and nicotine were repeatedly administered sequentially, varenicline blocked the development and expression of nicotine-induced sensitization. Acute varenicline blocked the expression of nicotine-induced sensitization in a dose-dependent manner. Acute varenicline did not significantly increase locomotor activity, nor did it attenuate nicotine-induced sensitization. However, varenicline did cross-sensitize to the effects of nicotine, and vice versa. The present study showed that varenicline produced a dose-dependent bidirectional cross-sensitization with nicotine. Taken together, these findings provide pre-clinical evidence that varenicline is able to attenuate the effects of nicotine, yet simultaneously 'substitutes' for the effects of nicotine in the rat. Longitudinal studies would be needed to see if similar effects are seen in the clinical setting, and whether such effects contribute to the actions of varenicline as a smoking cessation aid.

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(1)236 of	(6)6 was	(11)3 and/or	(16)2 on
(2)59 and	(7)5 as	(12)3 by	(17)2 progression,
(3)54 null	(8)4 are	(13)3 including	(18)2 to
(4)21 in	(9)4 for	(14)3 process
(5)6 is	(10)4 were	(15)2 after

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--- WordNet output for development --- =>発達, 開発, 産物, 進展 Overview of noun development The noun development has 9 senses (first 7 from tagged texts) 1. (52) development -- (act of improving by expanding or enlarging or refining; "he congratulated them on their development of a plan to meet the emergency"; "they funded research and development") 2. (46) development, evolution -- (a process in which something passes by degrees to a different stage (especially a more advanced or mature stage); "the development of his ideas took many years"; "the evolution of Greek civilization"; "the slow development of her skill as a writer") 3. (11) growth, growing, maturation, development, ontogeny, ontogenesis -- ((biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children") 4. (9) development -- (a recent event that has some relevance for the present situation; "recent developments in Iraq"; "what a revolting development!") 5. (7) exploitation, development -- (the act of making some area of land or water more profitable or productive or useful; "the development of Alaskan resources"; "the exploitation of copper deposits") 6. (6) development -- (a district that has been developed to serve some purpose; "such land is practical for small park developments") 7. (4) development -- (a state in which things are improving; the result of developing (as in the early part of a game of chess); "after he saw the latest development he changed his mind and became a supporter"; "in chess your should take care of your development before moving your queen") 8. development, developing -- (processing a photosensitive material in order to make an image visible; "the development and printing of his pictures took only two hours") 9. development -- ((music) the section of a composition or movement (especially in sonata form) where the major musical themes are developed and elaborated) --- WordNet end ---