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Science News for February 24, 2004


Sophisticated silencing strategies

A study by James Carrington and Steve Jacobsen reveals distinct classes of small RNAs in plants with specialized functions. These include genome maintenance, regulation of specific genes, and defense mechanisms, shedding light on the evolution of RNA-mediated gene silencing.

SourcePLOS·JournalPLOS Biology·DateFeb 24, 2004

Study shows women's medication use higher than expected

A study published in the American Journal of Obstetrics and Gynecology found that nearly all women take prescription medications (92%) and self-medicate with over-the-counter medications (96.5%). Researchers also discovered potential drug interactions, including those between antidepressants and herbal supplements like St. John's wort.

SourceUniversity of Minnesota·JournalAmerican Journal of Obstetrics and Gynecology·DateFeb 24, 2004

Exploring small RNA function

Researchers develop system to study small RNAs using siRNA inhibitors, providing unprecedented insight into RNA interference and microRNA functions. The technique enables rapid discovery of hundreds of microRNAs' regulatory roles, with significant implications for genetic studies.

SourcePLOS·JournalPLOS Biology·DateFeb 24, 2004

Study shows positive results for novel, patient-controlled transdermal system (PCTS)...

A study published in Anesthesia & Analgesia found that patients who used E-TRANS Fentanyl HCI PCTS experienced better pain control and fewer withdrawals compared to those who received a placebo. The novel transdermal system, approximately the size of a credit card, allows patients to control their pain management without needles or pumps.

SourceOrtho-McNeil Pharmaceutical, Inc.·JournalAnesthesia & Analgesia·DateFeb 24, 2004

Smoking in movies returns to 1950s levels

A recent study found that cigarette smoking in top-grossing films has increased to 1950s levels, with an average of 10.7 smoking incidents per hour of screen time. The rise in screen smoking is concerning for youth smoking habits, as previous studies have shown a link between movie smoking and youth tobacco use.

SourceCenter for Advancing Health·JournalAmerican Journal of Public Health·DateFeb 24, 2004

Insights gained from molecular modeling may lead to better insecticides

Researchers used molecular modeling to study the detoxifying proteins of black swallowtail butterflies and corn earworms. The earworm's protein is more flexible, allowing it to bind to and detoxify six different plant defense chemicals and three common insecticides, making it a master of adapting to new pesticides and host plants.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateFeb 24, 2004