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Infection and Immunity, June 2000, p. 3704-3709, Vol. 68, No. 6
Departments of Host
Defense1 and
Gastroenterology,2 Osaka City
University Graduate School of Medicine, Abeno-ku, Osaka 545-8585, Toneyama Institute for Tuberculosis Research, Toyonaka,
Osaka 560-0045,4 and The Center of
Japan Biological Chemistry, Kaizu-gunn, Gifu
503-0628,3 Japan
Received 11 October 1999/Returned for modification 25 November
1999/Accepted 15 February 2000
Trehalose 6,6'-dimycolate (TDM) is a cell surface molecule of
Mycobacterium tuberculosis. TDM induced a loss of body
weight and prominent granulomas in the liver and lungs by the
intravenous injection of TDM into rabbits. TDM also induced atrophy of
the thymus and spleen due to apoptosis. By contrast, sulfolipid
(2,3,6,6'-tetraacyl trehalose 2'-sulfate) induced neither toxicity, nor
granuloma formation, nor atrophy of the thymus and spleen. In rabbits
the histopathological changes were more dramatic than in mice. The rabbit model may be more sensitive and may provide more information on
the beneficial or pathological effects of TDM.
0019-9567/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
In Vivo Administration of Mycobacterial Cord Factor
(Trehalose 6,6'-Dimycolate) Can Induce Lung and Liver Granulomas and
Thymic Atrophy in Rabbits
*
Corresponding author. Mailing address: Department of
Host Defense, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan. Phone: 81-6-6645-3746. Fax: 81-6-6645-3747. E-mail:
naoko{at}med.osaka-cu.ac.jp.
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