Better data needed on sensitivity syndrome

Article Abstract:

Multiple chemical sensitivity (MCS), a condition in which victims claim increased sensitivity to a vast array of chemicals and products, has been regarded by the mainstream medical profession as a psychosomatic disorder. MCS patients often visit physicians who call themselves clinical ecologists, who support their claims that the syndrome is genuine. Signs exist that the disease may be soon recognized: the Department of Housing and Urban Development recently allowed MCS sufferers to become eligible for disability. A scientific workshop, organized by the National Research Council and sponsored by the Environmental Protection Agency, allowed clinical ecologists and more conventional practitioners to interact. Allergists, immunologists, and toxicologists point out that the lack of evidence for MCS makes it unlikely that it is anything other than a psychiatric symptom. Other physicians point out that many MCS patients have no histories of psychiatric disorders, accumulating good work records until they become ill after chemical exposure. All agree that controlled studies are needed, and most acknowledge that exposure to chemicals can cause a range of conditions, from asthma to autoimmune disorders (where the body attacks its own cells as if they were foreign). In spite of MCS advocates' claims that suspect chemicals impair the immune system, no evidence of immune function derangement has been presented. At the workshop, possible interactions between the nervous system and chemical effects were discussed: chemicals could change the balance of neurotransmitter substances (that control electrical transmission between nerve cells) in the brain, producing depression. Studies of MCS patients will require isolation units where subjects can stay while undergoing tests. Epidemiological surveys also need to be mounted, according to workshop participants, to see whether people exposed to chemical spills develop MCS, and to assess the prevalence of the disorder. (Consumer Summary produced by Reliance Medical Information, Inc.)

Conferences, meetings and seminars, Chemical sensitivity, Multiple, Multiple chemical sensitivity

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Satellite data rocket disease control efforts into orbit

Article Abstract:

Epidemiologists are beginning to use satellite-image maps of inaccessible or uncharted areas to track possible transmission corridors of insect-borne diseases. Pilot projects around the world are described which have yet to be proven useful for actual disease control.

Usage, Artificial satellites in remote sensing, Satellite remote sensing, Epidemiology, Insect carriers of disease, Insects as carriers of disease, Meteorological satellites

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Interfering with interferon

Article Abstract:

Two groups have produced knockout mice that will help determine interferon-g's role in normal immune and autoimmune responses. Mice with inactivated interferon-g genes and mice with the protein's receptor gene blocked will help immunology and disease research.

Interferon, Genetically modified mice, Immune system

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