Much less is known about the effects of smoking on subcortical regions. We compared smokers and non-smokers on regional subcortical volumes, and predicted that smokers demonstrate greater age-related volume loss across subcortical regions than non-smokers. Non-smokers (n = 43) and smokers (n = 40), 22–70 years of age, completed a 4 T MRI study. Bilateral total subcortical lobar white matter (WM) and subcortical nuclei volumes were quantitated via FreeSurfer. In smokers, associations between smoking severity measures and subcortical volumes were examined. Smokers demonstrated greater age-related volume loss than non-smokers in the bilateral subcortical lobar WM, thalamus, and cerebellar cortex, as well as in the corpus callosum and subdivisions. In smokers, higher pack-years were associated with smaller volumes of the bilateral amygdala, nucleus accumbens, total corpus callosum and subcortical WM. Results provide novel evidence that chronic smoking in adults is associated with accelerated age-related volume loss in subcortical WM and GM nuclei. Greater cigarette quantity/exposure was related to smaller volumes in regions that also showed greater age-related volume loss in smokers.
News Search | All News Topics > Tobacco Industry News Topics : By Country | By State ; Press Releases by Industry Channel > All Tobacco Industry Press Releases Philip Morris International (PMI) Announces Filing of Application for Its Electronically Heated Tobacco Product with the US Food and Drug Administration (FDA) LAUSANNE, Switzerland--(BUSINESS WIRE)--Dec. 6, 2016-- Philip Morris International Inc. (“PMI”) (NYSE / Euronext Paris: PM) on Dec. 5 submitted a Modified Risk Tobacco Product (MRTP) application for its electronically heated tobacco product with the U.S. Food and Drug Administration’s (FDA) Center for Tobacco Products. This is consistent with the company’s stated goal of submitting its MRTP application in 2016. PMI anticipates the FDA taking a minimum of 60 days to complete an administrative review to determine whether to accept the application for substantive review. Philip Morris International Inc. (PMI) is the world’s leading international tobacco company, with six of the world's top 15 international brands and products sold in more than 180 markets. In addition to the manufacture and sale of cigarettes, including Marlboro, the number one global cigarette brand, and other tobacco products, PMI is engaged in the development and commercialization of Reduced-Risk Products (“RRPs”).