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What happens when nerve cells lose their way?

By | April 23, 2001

encodes a molecule that helps guide axons from the eye to the brain.

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Antisense oligonucleotide treatment for human astrocytoma

By | April 20, 2001

Active antisense oligonucleotides directed against the insulin-like growth factor type I receptor (IGF-IR/AS ODN) have shown potential as an antitumour agent in animal studies. In April Journal of Clinical Oncology David Andrews and colleagues from Thomas Jefferson University Hospital, Philadelphia, describe their novel implantation of IGF-IR/AS ODN treated cells in patients with astrocytoma.Andrews et al studied 12 patients treated by surgery for malignant astrocytoma. Glioma cells collected at

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Bacteria rapidly develop resistance to new antibiotic

By | April 20, 2001

can quickly become resistant to linezolid during extended treatment.

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genome

By | April 20, 2001

contains genes acquired from a variety of organisms that are implicated in the development of antibiotic resistance.

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Mitochondrial DNA insertions

By | April 20, 2001

There is evidence for substantial transfer of mitochondrial DNA (mtDNA) to the nuclear genome in plants. Analysis of the recently completed Arabidopsis thaliana genome sequence indicated a mtDNA insertion of 270 kilobases (kb), larger than previously described mitochondria-to-nuclear DNA insertions. In the April 24 Proceedings of the National Academy of Sciences, Stupar et al present a detailed cytological characterization of the mtDNA insertion in chromosome 2 of A. thaliana (Proc Natl Acad Sci

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Snapshots of a cellular motor

By | April 20, 2001

The enzyme ATP synthase spins like a wheel to convert energy into ATP for storage. High-speed imaging reveals the details of the rotation.

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Adrenergic signalling affects progression of cardiomyopathy

By | April 19, 2001

-adrenergic receptor signalling or excitation-contraction coupling can prevent systolic dysfunction, exercise intolerance and cardiac remodelling.

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AIDS drugs manufacturers drop case

By | April 19, 2001

Today 39 pharmaceutical companies unconditionally dropped their case against the South African government. A turning point in the case may have been persuasive evidence that the companies have no economic basis for the huge prices they charge for AIDS drugs.

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locus

By | April 19, 2001

The importance of the INK4A/CDKN2A locus, encoding the p16/INK4a and p19/ARF proteins, in tumor suppression is underscored by the high frequency of mutation or silencing of the locus in human tumors. In the April 24 Proceedings of the National Academy of Sciences, Magdinier and Wolffe describe the role of the methyl-CpG binding protein MBD2 in INK4a/ARF gene repression in cancer cells (Proc Natl Acad Sci USA 2001, 98:4990-4995). They used chromatin immunoprecipitation (ChIP) experiments to study

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After the (draft) sequence

By | April 18, 2001

Now that the dust has settled after publication of the human genome sequence, Sydney Brenner assesses the first draft.

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