Navigation Links
Cigarette smoking may accelerate disability in those with MS
Date:10/13/2007

BUFFALO, N.Y. -- Persons with multiple sclerosis who smoke risk increasing the amount of brain tissue shrinkage, a consequence of MS, and the subsequent severity of their disease, new research conducted at the Buffalo Neuroimaging Analysis Center (BNAC) at the University at Buffalo has shown.

The results are based on magnetic resonance images (MRIs) of smokers and nonsmokers in 368 MS patients treated in UBs Jacobs Neurological Institute, the universitys Department of Neurology in its School of Medicine and Biomedical Sciences.

Results of the research were presented today (Oct. 13, 2007) at the 23rd Congress of the European Committee for the Treatment and Research in Multiple Sclerosis in Prague, Czech Republic.

Cigarette smoke has many properties that are toxic to the central nervous system, and cigarette smoking has been linked to higher susceptibility and risk of progressive multiple sclerosis, said Robert Zivadinov, M.D., Ph.D., UB professor of neurology, director of the BNAC and first author on the study.

Interactions between cigarette smoking and genetic and immunologic factors may point to mechanisms in disease pathogenesis. No previous studies have investigated differences in MRI characteristics between MS cigarette smokers and MS nonsmokers, he said.

The study included patients from the three most common forms of MS: 253 had relapsing-remitting MS -- acute attacks with full or partial recovery; nine had primary-progressive MS -- steady worsening from onset; and 90 had secondary-progressive MS, characterized by occasional attacks and sustained progression. Another 16 participants had experienced their first MS onset.

Patients ranged in age from 35-55 years, and had been living with MS for an average of 13 years. The Expanded Disability Status Scale (EDSS), an average number derived from measures of various functions of the central nervous system based on scales ranging from 0 to 10, was 3.1. The higher the number, the greater the disability.

Within the study cohort, 128 had a history of smoking: 96 were active smokers who had smoked more than 10 cigarettes-per-day in the three months prior to the study start, and 32 were former

smokers who had smoked cumulatively for at least 6 months sometime in the past. The remaining 240 participants had no active smoking exposure.

The average smoking duration was 17.6 years and the average number of cigarettes smoked per day was 17. There were no significant differences between smokers and nonsmokers based on age, disease duration, disease course and total lifetime use of disease-modifying drugs.

Analysis and comparison of the MRIs from smokers and nonsmokers showed that the smokers had significantly higher disability scores and lower brain volume than the nonsmokers. There also was a significant relationship between a higher number of packs-per-day smoked and lower volume of the neocortex, the portion of the cerebral cortex that serves as the center of higher mental functions for humans.

There were no significant differences in any of the clinical findings between active and former smokers.

Smoking appears to influence the severity of MS and to accelerate brain atrophy and the disruption of the blood-brain barrier in MS patients, said Zivadinov. MS patients should be counseled to stop smoking, or at least to cut down so they can preserve as much brain function as possible.

Additional researchers on the study, all from the BNAC or the JNI, were Milena Stosic, M.D., Nadir Abdelrahman, M.D., Barbara E. Teter, Ph.D., Frederick E. Munschauer, M.D., Sara Hussein, Jackie Durfee, Michael G. Dwyer, Jennifer L. Cox, Ph.D., Nima Hani, Fernando Nussenbaum and Bianca Weinstock-Guttman, M.D.
'/>"/>

Contact: Lois Baker
ljbaker@buffalo.edu
716-645-5000 x1417
University at Buffalo
Source:Eurekalert

Related biology news :

1. Cigarette smoke blocks cell repair mechanism, University of Florida study shows
2. Halving daily cigarette quota has no health benefit
3. Cigarette smoking impedes tendon-to-bone healing
4. Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent
5. New cigarette designs dont offer lower predicted cancer risks
6. Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring
7. Research shows smoking adds a decade to reproductive age of IVF patients
8. OHSU research shows vitamin C counteracts some negative impacts of smoking on unborn babies
9. Indias smoking gun: Dino-killing eruptions
10. Smoking damages key regulatory enzyme in the lung
11. Alcoholism, smoking and genetics among Plains American Indians
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/11/2017)... Fla. , April 11, 2017 ... and secure authentication solutions, today announced that it ... Intelligence Advanced Research Projects Activity (IARPA) to develop ... Thor program. "Innovation has been a ... IARPA,s Thor program will allow us to innovate ...
(Date:4/6/2017)... , April 6, 2017 Forecasts ... ANPR, Document Readers, by End-Use (Transportation & Logistics, Government ... Oil, Gas & Fossil Generation Facility, Nuclear Power), Industrial, ... Other) Are you looking for a definitive ... ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC , ... that the United States Patent and Trademark Office (USPTO) ... covers the linking of an iris image with a ... and represents the company,s 45 th issued patent. ... is very timely given the multi-modal biometric capabilities that ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... publication of a United States multicenter, prospective clinical study that demonstrates the ... diagnostic test capable of identifying clinically significant acute bacterial and viral respiratory ...
(Date:10/11/2017)... ... October 11, 2017 , ... At its national board ... Suneel I. Sheikh, the co-founder, CEO and chief research scientist of Minnesota-based Advanced ... for membership in ARCS Alumni Hall of Fame . ASTER Labs is ...
(Date:10/11/2017)... BALTIMORE, Md. (PRWEB) , ... October 11, 2017 ... ... for digital pathology, announced today it will be hosting a Webinar titled, “Pathology ... of  Advanced Pathology Associates , on digital pathology adoption best practices and how ...
(Date:10/11/2017)... ... 11, 2017 , ... A new study published in Fertility ... fresh in vitro fertilization (IVF) transfer cycles. The multi-center matched cohort ... After comparing the results from the fresh and frozen transfer cohorts, the authors ...
Breaking Biology Technology: