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Sunday, December 2, 2012

Toxic couches? Flame retardants on the rise in furniture, study finds.

Posted on 12:21 PM by Unknown
Toxic couches? Flame retardants on the rise in furniture, study finds.
http://www.environmentalhealthnews.org/ehs/news/2012/toxic-couches

"Flame retardants in U.S. furniture are on the rise, with a new study finding them in nearly all couches tested. The findings, published today, confirm that household furniture remains a major source of a variety of flame retardants, some of which have been building up in people's bodies and in the environment. In the new tests, three out of every four couches purchased before 2005 contained the chemicals, with a now-banned compound in 39 percent. For newer couches, 94 percent contained flame retardants, nearly all next-generation compounds with little known about their potential health effects. "More furniture appears to be treated with flame retardants today than, say, 15 years ago," said Heather Stapleton, an environmental chemist at Duke University and lead author of the project."
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Study provides more clues to Gulf War illness - and hope

Posted on 12:19 PM by Unknown
Study provides more clues to Gulf War illness - and hope
http://www.usatoday.com/story/news/nation/2012/11/26/gulf-war-report/1727655/

"A study finds that Gulf War Illness, or the series of symptoms that plagues 1 out of 4 veterans of the 1991 Persian Gulf war, is due to damage to the autonomic nervous system."
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Chemicals in the Environment Interfere With Pregnancy

Posted on 12:18 PM by Unknown
Chemicals in the Environment Interfere With Pregnancy
http://www.thedailybeast.com/articles/2012/11/27/chemicals-in-the-environment-interfere-with-pregnancy.html

"A new study uncovers more impediments to conception, but the chemicals to blame, including PCBs, aren't anything a couple can control."
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Traffic-related air pollutants and exhaled markers of airway inflammation and oxidative stress in New York City adolescents

Posted on 12:16 PM by Unknown
Traffic-related air pollutants and exhaled markers of airway inflammation and oxidative stress in New York City adolescents
http://www.sciencedirect.com/science/article/pii/S001393511200312X

Patel, M. et. al. 
Available online 23 November 2012.  In Press.

Abstract

Exposures to ambient diesel exhaust particles have been associated with respiratory symptoms and asthma exacerbations in children; however, epidemiologic evidence linking short-term exposure to ambient diesel exhaust particles with airway inflammation is limited. We conducted a panel study with asthmatic and nonasthmatic adolescents to characterize associations between ambient diesel exhaust particle exposures and exhaled biological markers of airway inflammation and oxidative stress.
Over four weeks, exhaled breath condensate was collected twice a week from 18 asthmatics and 18 nonasthmatics (ages 14–19 years) attending two New York City schools and analyzed for pH and 8-isoprostane as indicators of airway inflammation and oxidative stress, respectively. Air concentrations of black carbon, a diesel exhaust particle indicator, were measured outside schools. Air measurements of nitrogen dioxide, ozone, and fine particulate matter were obtained for the closest central monitoring sites. Relationships between ambient pollutants and exhaled biomarkers were characterized using mixed effects models.
Among all subjects, increases in 1- to 5-day averages of black carbon were associated with decreases in exhaled breath condensate pH, indicating increased airway inflammation, and increases in 8-isoprostane, indicating increased oxidative stress. Increases in 1- to 5-day averages of nitrogen dioxide were associated with increases in 8-isoprostane. Ozone and fine particulate matter were inconsistently associated with exhaled biomarkers. Associations did not differ between asthmatics and nonasthmatics. The findings indicate that short-term exposure to traffic-related air pollutants may increase airway inflammation and/or oxidative stress in urban youth and provide mechanistic support for associations documented between traffic-related pollutant exposures and respiratory morbidity.

Highlights
► We measured airway inflammation in urban youth with and without asthma for 4 weeks. ► We measured daily ambient air black carbon as an indicator of diesel air pollution. ► Black carbon was associated with airway inflammation and oxidative stress over time. ► Ambient air nitrogen dioxide was associated with airway oxidative stress over time. ► Traffic emissions may increase airway inflammation in youth with and without asthma.
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Cell Phone Radiation May Alter Brain, DNA

Posted on 12:13 PM by Unknown
Enviroblog: Cell Phone Radiation May Alter Brain, DNA
http://www.enviroblog.org/2012/11/cell-phone-radiation-may-alter-brain-dna.html
 
"New research by Russian scientist Igor Belyaev, Ph.D., and Turkish researcher Nesrin Seyhan, Ph.D., shows that radiation emitted from portable devices may damage DNA and disrupt the process of DNA repair."
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Abnormal muscle membrane function in fibromyalgia patients and its relationship to the number of tender points.

Posted on 12:11 PM by Unknown
Abnormal muscle membrane function in fibromyalgia patients and its relationship to the number of tender points.
http://www.ncbi.nlm.nih.gov/pubmed/23191983
 
Klaver-Król EG, Zwarts MJ, Ten Klooster PM, Rasker JJ.   Clin Exp Rheumatol. 2012 Nov 22. [Epub ahead of print]
Source
Department of Neurology and Clinical Neurophysiology, Functie Afdeling, Hospital Group Twente ZGT, Hengelo, The Netherlands. eklaver@planet.nl.
Abstract
OBJECTIVES:
Fibromyalgia (FM) is a disorder characterised by chronic widespread pain in soft tissues, especially in muscles. Previous research has demonstrated a higher muscle fibre conduction velocity (CV) in painful muscles of FM patients. The primary goal of this study was to investigate whether there is also a difference in CV in non-painful, non-tender point (TP) related muscles between FM patients and controls. The secondary goal was to explore associations between the CV, the number of TPs and the complaints in FM.
METHODS:
Surface electromyography (sEMG) was performed on the biceps brachii muscle of female FM patients (13) and matched healthy controls (13). Short static contractions were applied with the arm unloaded and loaded at 5% and 10% of maximum voluntary force. The CV was derived by cross-correlation method (CV-cc) and inter-peak latency method (CV-ipl). TP score and Fibromyalgia Impact Questionnaire (FIQ) were performed in all participants. Correlations were calculated between the CVs, TP score and items of the FIQ.
RESULTS:
In FM patients, the CV was higher than in the controls (CV-cc p=0.005; CV-ipl p=0.022). The CV was correlated with the number of TPs in FM patients (r=0.642 and 0.672 for CV-cc and CV-ipl, respectively). No correlations were found between the CV and any aspect of health status on the FIQ.
CONCLUSIONS:
The results demonstrate abnormally high muscle membrane conduction velocity in FM, even in non-TP muscles. In addition, a relationship has been found between the high membrane velocity and the number of TPs.
PMID:  23191983 [PubMed - as supplied by publisher]
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Nerve Deficits May Drive Gulf War Syndrome

Posted on 12:09 PM by Unknown
Nerve Deficits May Drive Gulf War Syndrome
http://www.medpagetoday.com/Neurology/GeneralNeurology/36113

"Dysfunction of the autonomic nervous system may underlie the myriad symptoms experienced by veterans with Gulf War syndrome and its variant subtypes, a case-control study suggested."
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