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Science News for January 30, 2001


Fertility experts urge clinics to consider ‘natural cycle’ IVF instead of routine use of ovarian stimulants

A study by UK fertility experts found that natural cycle IVF can achieve comparable results to conventional treatment in 60-70% of cases, while reducing costs and risks. The approach is suitable for women with regular menstrual cycles and fallopian tube problems, but not for those with irregular ovulation or ICSI requirements.

Untangling prostaglandin signaling

A study by Stock et al. reveals that genetic disruption of the PGE2 receptor EP1 significantly reduces pain behavior and blood pressure responses to inflammation. The findings suggest that NSAID treatment's analgesic effect can be explained by inhibition of signaling through this single receptor type.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 30, 2001

O.R. study suggests safety benefits from free flight routings.

A preliminary study published in Operations Research found that free flight routing could lead to a significant reduction in mid-air collision risk, with a potential safety dividend of up to 69%. The study also suggests that shortened flight paths could result in reduced fuel consumption and increased flight frequencies.