A new DNA marker tightly linked to the fragile X locus (FRAXA)

Article Abstract:

When mental retardation occurs in a family more often than would be expected by chance, the fragile X syndrome is the most likely cause. Patients with fragile X syndrome have a fragile site at position q27.3 on the X chromosome that can easily break. A new marker, or segment of DNA, has been identified that is tightly linked with the gene involved in fragile X syndrome. Inheritance of certain sequences of DNA is associated with the inheritance of disease. The identification of a marker associated with fragile X syndrome allows for greater accuracy in the identification of carriers, people who have the defective gene, and in prenatal diagnosis of the disease. The identification of a marker is also the first step in the isolation of the gene responsible for the disease. (Consumer Summary produced by Reliance Medical Information, Inc.)

Diagnosis, Mental retardation, Prenatal diagnosis, Sex chromosome abnormalities

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Gene Linked to Faulty Cholesterol Transport

Article Abstract:

Researchers have identified the gene responsible for Tangier disease, a rare hereditary disorder involving a defect in cholesterol management. The ABC1 gene also occurs in patients with familial HDL deficiency syndrome. The new discovery may lead to the development of drugs to treat the those and similar diseases.

United States, Cholesterol, Hypolipoproteinemia

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Chlamydia linked to atherosclerosis

Article Abstract:

Researchers are gathering more evidence linking the bacteria Chlamydia pneumoniae to atherosclerosis. The latest study published in the Jun 1996 issue of the Journal of the American College of Cardiology, shows 79% of heart disease patients had Chlamydia in their arteries.

Health aspects, Causes of, Heart diseases, Atherosclerosis, Chlamydia infections

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