Navigation Links
High hourly air pollution levels more than double stroke risk

High hourly levels of air pollution, more than double the risk of one type of stroke, suggests research published ahead of print in Occupational and Environmental Medicine.

Currently, the risk of respiratory and cardiovascular problems tends to be linked to the average daily amount of air pollution, rather than variations in hourly levels.

The researchers assessed data on stroke deaths in people aged 65 years and older, occurring between January 1990 and December 1994 in 13 major urban areas in Japan.

Levels of air pollutants, including nitrogen dioxide, particulate matter, and photochemical oxidants, were monitored hourly at various sites in each of the 13 areas.

When the two sets of data were put together, a pattern emerged for intracerebral haemorrhage - where a blood vessel bursts inside the brain - for the warmer months between April and September.

This showed that high hourly rates of particulate matter (in excess of 200 ug/m3) around two hours before death were associated with a more than doubling in the risk of death from a bleed into the brain.

The findings held true, irrespective of the average daily level of air pollutants.

No such effect was found for ischaemic stroke, where the arteries in the brain become furred up and narrowed as a result of fatty deposits.

This is possibly because the time lag between the start of this type of stroke and death is rather longer than that for a bleed into the brain, say the authors.

Pervious research shows that the effects of air pollution act quickly on the body, say the authors, with inhaled particles detectable in the blood within 60 seconds. Peak levels can stay in the blood for up to an hour.

Their findings prompt the authors to suggest that preventive measures should be based on average hourly measures rather than just average daily measures alone.


'"/>

Source:BMJ Specialty Journals


Page: 1

Related biology news :

1. UN environmental agency steps up battle against marine pollution
2. Global warming increases oyster sensitivity to pollution
3. Toxic flood lifts lid on common urban pollution problem
4. Study uncovers dirty little secret: Soil emissions are much-bigger-than-expected component of air pollution
5. Sensor web simulation investigates technique to improve prediction of pollution across the globe
6. A radical solution for environmental pollution
7. NCAR analysis shows widespread pollution from 2004 wildfires
8. Beach pollution is worst during new and full moon
9. Researchers show how air pollution can cause heart disease
10. York researchers develop pollution-busting plants to clean up contaminated land
11. Record air pollution above the Arctic
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: High hourly air pollution levels more than double stroke risk

(Date:7/10/2014)... and teens living with a cardiac pacemaker, a low ... of life, reports a study in the July ... the official journal of the Society for Developmental ... by Lippincott Williams & Wilkins , a part ... function as a protective factor against lower health-related quality ...
(Date:7/10/2014)... image was collected by the Moderate Resolution Imaging Spectroradiometer ... Each hot spot, which appears as a red mark, ... MODIS instrument recognized temperatures higher than background. When accompanied ... hot spots are diagnostic for fire. , This ... coming directly from the fires, although the smoke released ...
(Date:7/10/2014)... some patients, the chronic inflammatory skin diseases psoriasis* and ... have therefore had to base their decision on which ... an examination of tissue samples. A team of researchers ... of Munich (TUM) have now analyzed the molecular processes ... This has enabled them for the first time to ...
Breaking Biology News(10 mins):For children with pacemakers, 'self-competence' affects quality of life 2New diagnostic test to distinguish psoriasis from eczema 2
... Science-based identification of mold and other causes of ... plant pathologists with The American Phytopathological Society (APS). ... situation in which building occupants experience health problems ... typically associated with SBS range from allergy attacks ...
... South Korean team announced last week that it had ... that were genetically matched to specific people. But their ... Yuri Verlinsky of the Reproductive Genetics Institute, based in ... without resorting to therapeutic cloning. "It would be a ...
... When genes are deleted on a particular section of ... the childhood cancer neuroblastoma. A new study suggests that ... children with neuroblastoma may indicate to physicians that they ... fight the cancer. , Edward F. Attiyeh, M.D., a ...
Cached Biology News:What's really making you sick? Plant pathologists offer the science behind Sick Building Syndrome 2Double triumph in stem cell quest 2Double triumph in stem cell quest 3Double triumph in stem cell quest 4Chromosome Deletion Predicts Aggressive Neuroblastoma 2
(Date:1/15/2014)... Freeslate, Inc ., the leading ... Lupin Limited, one of India’s top five pharmaceutical companies, ... System for high throughput solid form screening. ... a wide range of quality, affordable generic and branded ...
(Date:1/14/2014)... 14, 2014 Histogen, Inc., a regenerative ... cells grown under simulated embryonic conditions, today announced that ... Suneva Medical, Inc. for physician-dispensed aesthetic products containing Histogen’s ... This agreement is an amendment to the existing license ...
(Date:1/14/2014)... Md. , Jan. 14, 2014  Organovo announced today ... the National Institutes of Health (NIH) to help scientists ... treatments to patients on a faster timeline. Organovo is ... (NCATS) and the National Eye Institute (NEI) to develop ...
(Date:1/14/2014)... Kinaxis ®, provider of RapidResponse ®, a cloud-based supply ... ( S&OP ) service, is proud to be a gold ... held at the Hilton San Diego Bayfront, January 30 – ... Kaszas , Director of Supply Chain at Amgen, as she ...
Breaking Biology Technology:Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... Pharmaceutical Inc. (Nasdaq: BMRN ) today announced that ... company update at the Deutsche Bank 34th Annual Health Care ... p.m. ET. Interested parties may access a live audio ... the BioMarin website, www.BMRN.com . A ...
... platform for treatment of Spinal Muscular Atrophy SOUTH PLAINFIELD, ... Inc. (PTC) and the Spinal Muscular Atrophy (SMA) Foundation ... which the SMA Foundation will provide up to $8.5 ... second continuation of the collaboration to fund a series ...
... AND STRENGTHENS ITS SENIOR MANAGEMENT TEAM , ... Systems, Inc. (OTC Bulletin Board: OMCM.OB), a leader in ... today announced that it has strengthened its European presence ... Summa. As Executive Vice President, Europe & Asia/Pacific based ...
Cached Biology Technology:BioMarin to Present at the Deutsche Bank Health Care Conference 2PTC Therapeutics and Spinal Muscular Atrophy Foundation Announce $8.5 Million Small Molecule Development Collaboration 2PTC Therapeutics and Spinal Muscular Atrophy Foundation Announce $8.5 Million Small Molecule Development Collaboration 3OmniComm Systems Appoints EDC Veteran Dr. Wolfgang Summa to Executive Vice President, Europe & Asia/Pacific 2OmniComm Systems Appoints EDC Veteran Dr. Wolfgang Summa to Executive Vice President, Europe & Asia/Pacific 3
... Glutathion-S-Transferase-pi EIA Principle: Glutathion-S-transferases ... which are involved in the detoxification ... 5 subgroups: Alpha, Mu, Pi, Teta ... their physiochemical, immunological, enzymatic and s ...
... only microplate sealer with an integrated in-line ... with a variety of configurations and sealing ... integrated stacker and 240-plate storage capacity , ... in small workcells , Handles all SBS ...
... aptamer screening and binding optimization and built ... on-chip synthesis platform. These microarrays are available ... Microarray Service. Probe Content ... than 1500 known aptamer sequences. Add up ...
... Microarrays designed for RNA aptamer screening and ... and powerful Paraflo microfluidic on-chip synthesis platform. ... be synthesized on-chip and LC Sciences can ... microarrays are available as part of our ...
Biology Products: