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Science News Archive 2004 - Page 34


Page 34 of 135

'Junk' DNA may be very valuable to embryos

Research suggests that retrotransposons, previously considered 'junk DNA', can initiate synchronous gene expression in mouse eggs and early embryos. This discovery may contribute to the reprogramming of the mammalian embryonic genome.

SourceCell Press·JournalDevelopmental Cell·DateOct 11, 2004

MRI shows brain changes underlying language deficits in autism

Researchers found that autistic boys with normal language capabilities have a typical brain organization, while those with language problems exhibit similar brain changes as non-autistic boys with Specific Language Impairment. The study supports the idea that autism and SLI are disruptions in neurodevelopment and neurobiology.

SourceWiley·JournalAnnals of Neurology·DateOct 11, 2004

Sunday, Oct. 10 news tips

African-American communities benefit from education programs that lower blood pressure readings. Researchers also found that changing sleeping positions can alter blood pressure, with stomach-lying positions leading to a significant drop in systolic blood pressure. Furthermore, impaired kidney function significantly increases the risk ...

Smoking and the risk of rheumatoid arthritis

A Swedish study reveals that smoking substantially raises the risk of developing rheumatoid arthritis, particularly in individuals with the shared epitope gene. The research, published in Arthritis & Rheumatism, found a significant interaction between smoking and the SE gene, increasing the disease risk to 7.5 times.

SourceSwedish Research Council·JournalArthritis & Rheumatism·DateOct 8, 2004

Health and politics: Lessons learned from the Iraq conflict

The US-led humanitarian relief effort in Iraq was plagued by mismanagement, with the Department of Defense dominating the effort. The Office of Foreign Disaster Assistance and other agencies had more experience handling crises, but were overlooked. The study highlights the importance of separating military and humanitarian assistance.

SourceThe Lancet_DELETED·JournalThe Lancet·DateOct 7, 2004

Botulism bug says no to nitric oxide, provides key to molecule's role in human cell signaling

The study reveals how botulism-causing Clostridium botulinum detects nitric oxide, shedding light on its role in human cardiovascular, neurological, and immunological systems. The research also provides insights into the structural details of soluble guanylyl cyclase, a protein difficult to crystallize for analysis.

Smoking and the risk of rheumatoid arthritis

A large population-based study found that current smokers have a 2.8-7.5 times increased risk of rheumatoid factor positive RA, while those with the SE gene have a 15.7 times higher risk. The study suggests a strong interaction between smoking and the shared epitope gene in increasing disease risk.

SourceWiley·JournalArthritis & Rheumatism·DateOct 7, 2004