Exposure to passive smoking during adolescence is associated with an increased risk of developing multiple sclerosis

2020 ◽  
pp. 135245852091250 ◽  
Author(s):  
Ditte Bang Oturai ◽  
Helle Bach Søndergaard ◽  
Nils Koch-Henriksen ◽  
Christina Andersen ◽  
Julie Hejgaard Laursen ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Logistic Regression ◽  
Environmental Factors ◽  
Passive Smoking ◽  
Odds Ratio ◽  
Blood Donors ◽  
Propensity Scores ◽  
Increased Risk ◽  
Female Case ◽  
Never Smokers

Background: Environmental factors are associated with acquiring multiple sclerosis (MS) particularly in adolescence. Objective: To test for association between MS and exposure to passive smoking at the age of 10–19. Methods: A total of 919 patients from the Danish MS Registry and Biobank and 3419 healthy blood donors who had not smoked before the age of 19 were targeted. We analyzed separately for each sex and for those never-smokers (cohort 1) and active smokers above the age of 19 (cohort 2). All participants completed standardized questionnaires about smoking and lifestyle. We matched cases and controls in the ratio of 1:2 by propensity scores discarding unmatchable individuals and used logistic regression adjusted for all covariates and interactions. Results: After matching, we included 110/213 male cases/controls and 232/377 female case/controls in cohort 1. In cohort 2, the numbers were 160/320 and 417/760, respectively. Among women in cohort 1, the odds ratio (OR) for MS by passive smoking at the age of 10–19 was 1.432 ( p = 0.037) but in men it was 1.232 ( p = 0.39). Among men in cohort 2, OR was 1.593 ( p = 0.022) but among women it was only 1.102 ( p = 0.44). Conclusion: Among never smokers, female MS cases were more often than female controls reported with passive smoking between the age of 10 and 19, and among smokers above the age of 19, male MS patients were more often than male controls reported with passive smoking.

Exposure to environmental tobacco smoke is associated with increased risk for multiple sclerosis

2011 ◽  
Vol 17 (7) ◽  
pp. 788-793 ◽  
Author(s):  
AK Hedström ◽  
M Bäärnhielm ◽  
T Olsson ◽  
L Alfredsson
Keyword(s):  
Multiple Sclerosis ◽  
Environmental Tobacco Smoke ◽  
Tobacco Smoke ◽  
Passive Smoking ◽  
Population Based ◽  
Increased Risk ◽  
Moist Snuff ◽  
Study Population ◽  
Never Smokers ◽  
Incident Cases

Background: Tobacco smoking has consistently been associated with increased risk for multiple sclerosis. However, data has been inconsistent regarding the influence of passive smoking. Objective: The aim was to estimate the influence of passive smoking on the risk for multiple sclerosis. Methods: A population-based case–control study using incident cases of multiple sclerosis was performed in Sweden, and the study population was restricted to subjects who had never smoked (695 cases, 1635 controls). The incidence of multiple sclerosis among never-smokers who had been exposed to passive smoking was compared with that of never-smokers who had never been exposed by calculating the odds ratio with a 95% confidence interval employing logistic regression. Results: The risk for multiple sclerosis was increased among never-smokers who had been exposed to passive smoking (OR 1.3, 95% CI 1.1–1.6) compared to never-smokers who had never been exposed. The risk increased with increasing duration of exposure ( p = 0.003). Conclusions: Exposure to environmental tobacco smoke is associated with an increased risk for multiple sclerosis. Since smoking, but not usage of oral tobacco in the form of moist snuff, is associated with increased risk for multiple sclerosis, we consider that the critical effects of passive smoking may be the result of irritations in the lungs. Hence, further studies would be valuable in order to clarify whether other forms of lung irritation, such as air pollution, contribute to the triggering of multiple sclerosis.

Neuraxial analgesia is not associated with an increased risk of post-partum relapses in MS

2018 ◽  
Vol 25 (4) ◽  
pp. 591-600 ◽  
Author(s):  
Caroline Lavie ◽  
Fabien Rollot ◽  
Françoise Durand-Dubief ◽  
Romain Marignier ◽  
Iuliana Ionescu ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Odds Ratio ◽  
Post Partum ◽  
Neuraxial Analgesia ◽  
Increased Risk ◽  
Obstetrical Analgesia ◽  
The Impact ◽  
Risk Of Relapse

Background: Obstetrical analgesia remains a matter of controversy because of the fear of neurotoxicity of local anesthetics on demyelinated fibers or their potential relationship with subsequent relapses. Objective: To assess the impact of neuraxial analgesia on the risk of relapse during the first 3 months post-partum, with a focus on women who experienced relapses during pregnancy. Methods: We analyzed data of women followed-up prospectively during their pregnancies and at least 3 months post-partum, collected in the Pregnancy in Multiple Sclerosis (PRIMS) and Prevention of Post-Partum Relapses with Progestin and Estradiol in Multiple Sclerosis (POPARTMUS) studies between 1992–1995 and 2005–2012, respectively. The association of neuraxial analgesia with the occurrence of a post-partum relapse was estimated by logistic regression analysis. Results: A total of 389 women were included, 215 from PRIMS and 174 from POPARTMUS. In total, 156 women (40%) had neuraxial analgesia. Overall, 24% experienced a relapse during pregnancy and 25% in the 3 months post-partum. Women with a pregnancy relapse were more likely to have a post-partum relapse (odds ratio (OR) = 1.83, p = 0.02), independently of the use of neuraxial analgesia. There was no association between neuraxial analgesia and post-partum relapse (OR = 1.08, p = 0.78). Conclusion: Neuraxial analgesia was not associated with an increased risk of post-partum relapses, whatever multiple sclerosis (MS) activity during pregnancy.

scholarly journals Impact of IL-10 gene polymorphisms and its interaction with environment on susceptibility to systemic lupus erythematosus

2020 ◽  
Vol 34 ◽  
pp. 205873842094591
Author(s):  
Gui-Hong Wang ◽  
Ting Zuo ◽  
Zheng-Cai Zuo
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Logistic Regression ◽  
Environmental Factors ◽  
Lupus Erythematosus ◽  
Nucleotide Polymorphisms ◽  
Systemic Lupus ◽  
Chi Square ◽  
Increased Risk ◽  
Never Smokers ◽  
The Impact

This study aims to explore the impact of interleukin (IL)-10 single nucleotide polymorphisms (SNPs) and its interaction with environment on the risk of systemic lupus erythematosus (SLE). Chi-square testing method was used to investigate whether the distributions for genotype of four SNPs were differed from Hardy-Weinberg equilibrium (HWE). Logistic regression was used to test the association between IL-10 SNPs and SLE risk. The best interaction combinations between IL-10 SNPs and environmental factors were assessed by generalized multifactor dimensionality reduction (GMDR). Both rs1800896-G and rs1800871-T alleles were associated with increased risk of SLE, the odds ratios (ORs) (95% confidence interval (CI)) for the two SNPs were 1.68 (1.25–2.09) and 1.47 (1.12–1.94), respectively. Then, we used the GMDR method to analyze the high-order interactions of four SNPs within IL-10 gene and environmental factors on SLE risk. We found a significant interaction combination (two-locus model with P = 0.001) between rs1800896 and smoking, after adjusting for gender, age, body mass index (BMI), and alcohol drinking. We also used two-variable stratified analysis by logistic regression to analyze the synergistic effect between two variables (rs1800896 and smoking), which had significant significance in GMDR model. We found that current smokers with rs1800896-AG or GG genotype have the highest SLE risk, compared with never smokers with the rs1800896-AA genotype, OR (95% CI) = 2.24 (1.52–3.58). The rs1800896-G and rs1800871-T alleles and interaction between rs1800896 and current smoking were all associated with increased risk of SLE.

scholarly journals Smoking as a risk factor for multiple sclerosis

2012 ◽  
Vol 19 (8) ◽  
pp. 1022-1027 ◽  
Author(s):  
Jonatan Salzer ◽  
Göran Hallmans ◽  
Maria Nyström ◽  
Hans Stenlund ◽  
Göran Wadell ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Logistic Regression ◽  
Risk Factor ◽  
Confidence Interval ◽  
Tobacco Use ◽  
Odds Ratio ◽  
Disease Onset ◽  
Recall Bias ◽  
Blood Samples ◽  
Increased Risk

Background: Smoking has been associated with an increased risk for multiple sclerosis, but no studies have measured levels of the nicotine metabolite cotinine in prospectively collected samples to assess exposure. Objective: To investigate the effects of laboratory defined tobacco use on the risk for multiple sclerosis using prospectively collected biobank blood samples. Methods: Levels of cotinine were measured in n=192 cases, and n=384 matched controls, using an immunoassay. The risk for multiple sclerosis was estimated using matched logistic regression. Results: Elevated cotinine levels (≥10 ng/ml) were associated with a significantly increased risk for multiple sclerosis, (odds ratio, OR 1.5, 95% confidence interval, CI 1.0–2.1). This association was only present in young individuals (below median age at blood sampling, <26.4 years), (OR 2.2, 95% CI 1.3–3.8). Conclusions: This study confirms that smoking is a risk factor for multiple sclerosis. It has the advantage of using analyses of cotinine levels in samples that were collected several years before disease onset, thus excluding any risk for recall bias and minimising the risk for reversed causation. Our results also suggest that the smoking related immunological events that contribute to the development of multiple sclerosis occur early in life.

scholarly journals Retrospective analysis of risk factors of hypotensive bradycardic events during shoulder arthroscopic surgery under interscalene blockade in the sitting position

2020 ◽  
Vol 73 (6) ◽  
pp. 542-549
Author(s):  
Taeha Ryu ◽  
Baek Jin Kim ◽  
Seong Jun Woo ◽  
So Young Lee ◽  
Jung A Lim ◽  
...  
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Odds Ratio ◽  
Arthroscopic Surgery ◽  
Sitting Position ◽  
Past Medical History ◽  
Frequent Adverse Event ◽  
Increased Risk ◽  
Potential Risk Factors ◽  
Independent Risk Factors

Background: Hypotensive bradycardic events (HBEs) are a frequent adverse event in patients who underwent shoulder arthroscopic surgery under interscalene block (ISB) in the sitting position. This retrospective study was conducted to investigate the independent risk factors of HBEs in shoulder arthroscopic surgery under ISB in the sitting position. Methods: A total of 2549 patients who underwent shoulder arthroscopic surgery under ISB and had complete clinical data were included in the study. The 357 patients who developed HBEs were included in the HBEs group, and the remaining 2192 in the non-HBEs group. The potential risk factors for HBEs, such as age, sex, past medical history, anesthetic characteristics, and intraoperative medications were collected and compared between the groups. Statistically significant variables were included in a logistic regression model to further evaluate the independent risk factors for HBEs in shoulder arthroscopic surgery under ISB. Results: The incidence of HBEs was 14.0% (357/2549). Logistic regression analysis revealed that the intraoperative use of hydralazine (odds ratio [OR] 4.2; 95% confidence interval [CI] 2.9–6.3), propofol (OR 2.1; 95% CI 1.3–3.6), and dexmedetomidine (OR 3.9; 95% CI 1.9–7.8) before HBEs were independent risk factors for HBEs in patients who received shoulder arthroscopic surgery under ISB. Conclusions: The intraoperative use of antihypertensives such as hydralazine and sedatives such as propofol or dexmedetomidine leads to increased risk of HBEs during shoulder arthroscopic surgery under ISB in the sitting position.

Abstract WP164: Role of Risk Factors in the Paradoxical Effect of Smoking on Peri-procedural Stroke in SAMMPRIS

Stroke ◽  
2013 ◽  
Vol 44 (suppl_1) ◽  
Author(s):  
Christine A Holmstedt ◽  
Tanya N Turan ◽  
Michael J Lynn ◽  
Bethany F Lane ◽  
Jean Montgomery ◽  
...  
Keyword(s):  
Risk Factors ◽  
Odds Ratio ◽  
Multivariate Analyses ◽  
Smoking Status ◽  
Active Form ◽  
Intracranial Stenosis ◽  
Contributory Factor ◽  
Increased Risk ◽  
Never Smokers

Background: A previous SAMMPRIS analysis of patients randomized to stenting showed that peri-procedural ischemic infarcts were significantly associated with diabetes, basilar stenosis, age, and smoking status with never smokers having a higher risk (odds ratio = 8.8, p< 0.001). We sought to determine if this finding could be due to a higher burden of other risk factors in never smokers. Method: Baseline features in 213 patients undergoing stenting in SAMMPRIS were compared between never smokers vs. former and current smokers in univariate and multivariate analyses. Logistic regression was used to determine the effect of smoking on peri-procedural ischemic infarcts after adjusting for factors related to smoking. Data: Univariate results are shown in Table 1. Never smokers were significantly (P<0.05) more likely to be female, diabetic, hypertensive, and have another intracranial stenosis, but in multivariate analyses only hypertension and another intracranial stenosis remained significantly (P<0.05) associated with smoking status. In a multivariate model that incorporated hypertension and another intracranial stenosis along with smoking status, diabetes, basilar stenosis, and age, smoking status remained significant with an increased risk among patients who never smoked (odds ratio = 5.3, p = 0.005). Conclusion: While never smokers had significantly higher rates of some risk factors compared to active or previous smokers, these risk factors do not explain all the increased risk of early stroke in never smokers after stenting in SAMMPRIS. Another contributory factor may be that smoking accelerates the conversion of clopidogrel to its active form.

scholarly journals Multiple sclerosis relapse risk in the postoperative period: Effects of invasive surgery and anesthesia

2019 ◽  
Vol 26 (11) ◽  
pp. 1437-1440
Author(s):  
Lindsey B De Lott ◽  
Samantha Zerafa ◽  
Kerby Shedden ◽  
Galit Levi Dunietz ◽  
Michelle Earley ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Logistic Regression ◽  
Medical Records ◽  
Odds Ratio ◽  
Conditional Logistic Regression ◽  
Unadjusted Odds Ratio ◽  
Relapse Risk ◽  
Multiple Sclerosis Relapse ◽  
Period Effects ◽  
Tertiary Center

Background: Postoperative multiple sclerosis (MS) relapses are a concern among patients and providers. Objective: To determine whether MS relapse risk is higher postoperatively. Methods: Data were extracted from medical records of MS patients undergoing surgery at a tertiary center (2000–2016). Conditional logistic regression estimated within-patient unadjusted and age-adjusted odds of postoperative versus preoperative relapse. Results: Among 281 patients and 609 surgeries, 12 postoperative relapses were identified. The odds of postoperative versus preoperative relapse in unadjusted (odds ratio (OR) = 0.56, 95% confidence interval (CI) = 0.18–1.79; p = 0.33) or age-adjusted models (OR = 0.66, 95% CI = 0.20–2.16; p = 0.49) were not increased. Conclusions: Surgery/anesthesia exposure did not increase postoperative relapse risk. These findings require confirmation in larger studies.

Conjugal multiple sclerosis in Isfahan, Iran: a population-based study

2007 ◽  
Vol 13 (5) ◽  
pp. 673-675 ◽  
Author(s):  
A.H. Maghzi ◽  
M. Etemadifar ◽  
V. Shaygannejad ◽  
M. Saadatnia ◽  
M. Salehi ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
General Population ◽  
Environmental Factors ◽  
Adult Life ◽  
Marital Relationship ◽  
Population Based ◽  
Rare Form ◽  
Population Based Study ◽  
Increased Risk ◽  
Estimated Risk

Conjugal multiple sclerosis (MS) is a rare form of MS in which both spouses are affected, and at least one is affected after marriage. Among 1606 definite MS patients, 1076 were in marital relationship, among whom we identified six conjugal pairs, giving the conjugal rate of 0.5%. This rate is 12.5 times higher than the estimated risk of MS for the general population (0.04%). The observed conjugal rate suggests an increased risk of developing MS for MS patients' spouses, this could be due to transmission or, more likely, to the same environmental factors shared in adult life. Multiple Sclerosis 2007; 13: 673-675. http://msj.sagepub.com

scholarly journals Applicability of logistic regression with sum-to-zero constraint parameterization in risk assessment for parotid malignancy

2019 ◽  
Author(s):  
Shari Messinger Cayetano ◽  
Kaming Lo ◽  
Christopher Fundakowski ◽  
Zoukaa Sargi
Keyword(s):  
Logistic Regression ◽  
Odds Ratio ◽  
Fine Needle Aspiration Biopsy ◽  
Clinical Presentation ◽  
Fold Increase ◽  
Needle Aspiration ◽  
Reference Cell ◽  
Model Parameterization ◽  
Increased Risk ◽  
Risk Of Disease

Abstract Background Investigative interest is often to determine how results from a diagnostic tool change the patient’s risk of disease with respect to the overall(naïve) risk at clinical presentation. Logistic regression is popular for data analysis for this type of investigation. However, standard approach, which uses reference cell coding, may not be informative in this setting. This is because this approach compares the risk between two distinct groups.Methods We considered weighted and unweighted approaches to model parameterization using deviation from means coding for assessing the risk of parotid malignancy, comparing patients with indeterminate fine-needle aspiration biopsy(FNAB) results with the general(naïve) risk among all presenting patients. Results from deviation from means coding and standard reference cell coding were compared.Results Unweighted coding estimates a two-fold increase in the odds of malignancy with an indeterminate FNAB result compared to the naïve odds at clinical presentation (Odds ratio(OR): 1.97 [95% Confidence Interval(CI): 1.34–2.90], P=0.0006). The weighted approach estimates increased risk (OR: 2.38 [95% CI: 1.45 – 3.89], P=0.0006), more accurately representing the naïve risk at presentation based on the direction of sample imbalance in the study. Using standard reference cell coding, an indeterminate result has a higher risk compared to a negative result, but this does not inform us about the risk with respect to that inherent at clinical presentation.Conclusions Depending on the investigative interest, it is important to adopt the appropriate coding methodology when logistic regression is applied. In addition, a weighted approach should be considered to account for sample imbalance.

scholarly journals Obstructive Sleep Apnea as a Risk Factor for Intracerebral Hemorrhage

Stroke ◽  
2021 ◽  
Author(s):  
Jacqueline H. Geer ◽  
Guido J. Falcone ◽  
Kevin N. Vanent ◽  
Audrey C. Leasure ◽  
Daniel Woo ◽  
...  
Keyword(s):  
Obstructive Sleep Apnea ◽  
Logistic Regression ◽  
Risk Factor ◽  
Sleep Apnea ◽  
Intracerebral Hemorrhage ◽  
Odds Ratio ◽  
Berlin Questionnaire ◽  
Multivariable Logistic Regression Model ◽  
Obstructive Sleep ◽  
Increased Risk

Background and Purpose: To determine whether obstructive sleep apnea (OSA) is associated with intracerebral hemorrhage (ICH) risk, we assessed premorbid OSA exposure of patients with nontraumatic ICH and matched controls. Methods: Ethnic/Racial Variations of Intracerebral Hemorrhage is a multicenter, case-control study evaluating risk factors for ICH that recruited 3000 cases with ICH and 3000 controls. OSA status was ascertained using the Berlin Questionnaire as a surrogate for premorbid OSA. We performed logistic regression analyses to evaluate the association between OSA and ICH. Results: Two thousand and sixty-four (71%) cases and 1516 (52%) controls were classified as having OSA by the Berlin Questionnaire. Cases with OSA were significantly more likely to be male and have hypertension, heart disease, hyperlipidemia, and higher body mass index compared with those without OSA. OSA was more common among cases compared with controls (71% versus 52%, odds ratio, 2.28 [95% CI, 2.05–2.55]). In a multivariable logistic regression model, OSA was associated with increased risk for ICH (odds ratio, 1.47 [95% CI, 1.29–1.67]). Conclusions: OSA is a risk factor for ICH.

Sign in / Sign up

Export Citation Format

Share Document