Thwarting Antibiotic-Resistant Bacteria

Researchers from Duke University have designed software that can simulate modifications to an enzyme used to make a common antibiotic. Mutating genes that produce the enzyme will make for slightly different variants of the drug. The researchers say this technique could eventually be used to design new variants of existing antibiotics to which bacteria have built up resistance. The results were detailed this week in the Proceedings of the National Academy of Sciences.

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Leptin

MIT researchers may have found an obesity treatment that unlocks the fat-fighting promise of leptin, an appetite-suppressing hormone once hailed as the answer to the battle of the bulge.

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