The Outcome of Our Smoking Cessation Interventions Project in the Past 6 Years: A Study of 1-Year Abstinence Rates / 日本農村医学会雑誌

Background/Objectives: Since April 2006, smoking cessation treatment has been included in public health insurance coverage, although conditionally. The tobacco control program usually takes 12 weeks or so. When it comes to the form of treatment, most medical care facilities adopt nicotine replacement therapy (NRT) at their outpatient ward. The cessation success rates are considered not so high as before. In stead of treating nicotine-addict outpatients individually, our hospital has been offering a stop-smoking program all its own since 1999. This study was designed to examine the results of our efforts in the last six years retrospectively.Subjects/Methods: Enrolled for this study were 232 patients who had participated in our six-month smoking cessation program between 1999 and 2005. A non-smokingsupport team made up of a physician, pharmacist(s), nurses, dietitian(s) and physical therapist(s) takes care of groups of participating patients, each group consisting of 10 or less. The patients undergo behavior therapy throughout the 6-month period and NRT in the first eight weeks. Under the program, nutrition guidance is offered regularly by dietitians for weight control and physical exercises by physical therapists for relief from the stress due to abstinence from smoking. We took a questionnaire survey of all the subjects and worked out the ratios of those persons who had remained abstinent up to one year after they stopped smoking to the total.Results: The rates of abstinence maintained eight weeks, six months and one year after the start of cessation were 78.4%, 70.3% and 64.7%, respectively. Of those who were still abstinent, 78.0% replied that they found it easy to resist the urge to smoke cigarette thanks to the smoking cessation program.Conclusion: Our six-month participatory tobacco control program was found effective as high cessation rates were maintained.

In vitro model of atherosclerosis using coculture of arterial wall cells and macrophage

In order to determine the precise mechanism of the interactions between different types of cells, which are common phenomena in tissues and organs, the importance of coculture techniques are becoming increasingly important. In the area of cardiology, artificial arteries have been developed, based on the understanding of physiological communication of the arterial smooth muscle cells (SMC), endothelial cells (EC), and the extracellular matrix (ECM). In the study of atherosclerosis, the modification of low-density lipoprotein (LDL), which result in the recruitment and accumulation of white blood cells, especially, monocytes/macrophages, and foam cell formation, are hypothesized. Although there are well known animal models, an in vitro model of atherogenesis with a precisely known atherogenesis mechanism has not yet been developed. In this paper, an arterial wall reconstruction model using rabbit primary cultivated aortic SMCs and ECs, was shown. In addition, human peripheral monocytes were used and the transmigration of monocytes was observed by scanning electron and laser confocal microscopy. Monocyte differentiation into macrophages was shown by immunohistochemistry and comprehensive gene expression analysis. With the modified form of LDL, the macrophages were observed to accumulate lipids with a foamy appearance and differentiate into the foam cells in the ECM between the ECs and SMCs in the area of our coculture model.