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Philip Morris

Date: 1979 (est.)
Length: 1 page
1005052972
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Author
Cooke, E.C.
Kumar, R.
Lader, M.H.
Russell, Mah
Thornton, R.E.
Type
SCRT, SCIENTIFIC REPORT
Area
LEGAL DEPT/CARLSTADT QRSA
Site
N28
Request
Stmn/R1-048
Stmn/R1-059
Stmn/R1-060
Stmn/R1-071
Stmn/R1-072
Stmn/R1-073
Stmn/R1-091
Stmn/R1-092
Master ID
1005052801/3146
Related Documents:
Document File
1005052694/1005053222/Carton C17f
Author (Organization)
Smoking Behaviour
Litigation
Stmn/Produced
Characteristic
EXTR, EXTRA
Date Loaded
24 May 1999
UCSF Legacy ID
xpe91a00

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&umar, R.; Cooke:, E'.CL; Lader, M.H.; Russell, M.A.H., Is Tobacco Smoking a Form of Nicotine.Dependence? In: Thornton, R.E. ('Edi'tor). Smoking Behaviour. Physiological and Psychological Influences. Edinburgh, Churchill Livingstone, 1978, pp. 244-258. In order to determine whether smoking is a form of nicotine dependence two experiments were performed. In the first experiment the doses of nicotine were given by inhalation of tobacco smoke and in the second experiment, aboutt a month later, roughly comparable doses of nicotine were given to the same subjects by intravenous injection. The dependent variable in both experi- ,ments was the amount and rate of ad libitum puffing at medium-strength, filter-tipped cigarettes (nicotine yield 1.3 mg - normally extracted by about L01puffs) during the three 40-minute sessions which followed each dose:. These cigarettes were regularly replaced, therefore a lit cigarettee was continuously available to the subjects. Smoking behavior was monitored by a pressure transducer connected to the cigarette holder which gave a continuous record of the number of puffs taken and 'the interpuff intervals. In addition, the duration and depth of each puff gave an estimate of the. .vol'ume of smoke sucked through the holder. Various physiological measures (i.e., heart rate, skin temperature and conductance, electroencephalogram (EEG), were also continuously recorded. The subjjects were 12 paid volunteers, seven male and five female, aged between 24 and 38 years; all the subjects were moderate/heavy cigarette-smokers (between 25 and 60 cigarettes daily for at least two years previously). Inhaled "doses" of smoke systematically postponed and reduced subsequent puffing and this was a function of the content of the smoked doses. The intravenous doses were without effect on smoking,behavi'or. -However, the physiological tests sbnwed that the . doses of nicotine clearly modified the heart rate-and the EEG with comparabTe effects in both experiments. These negative findings re-open. the question of whether physiological dependence on nicotine is the basis for the tobacco smoking habit,

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