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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yamakawa, M. Brey, P. T. Perrot, S. Ashida, M. Koizumi, Y. Lee, W. J. François, M. |
| Description | Author Affiliation: Brey PT ( Unité d'Ecologie des Systèmes Vectoriels, Institut Pasteur, Paris, France.); |
| Abstract | When the epicuticle of a silkworm larva, Bombyx mori, was lightly abraded in the presence of live Bacillus licheniformis, Enterobacter cloacae, or bacterial cell wall components, cecropin mRNAs were detected in the underlying epithelial cells and in fat body cells remote from the abraded area. Antibacterial activity due to cecropin was detected in the matrix of the lightly abraded cuticle but not in nonabraded portions of the cuticular matrix or in the hemolymph surrounding the fat body, unless a more severe cuticular abrasion was administered. A light abrasion to a larva of the giant silkworm moth, Hyalophora cecropia, in the presence of E. cloacae also induced antibacterial activity in the abraded cuticle. These data illustrate that the ectodermally derived lepidopteran larval integument, when challenged by live bacteria or their cell wall components, mounts an immune response. Hence, the insect exoskeleton, which is often considered as an inert protective armor, is indeed actively participating in defense. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 13 |
| Volume Number | 90 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1993-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Anti-Bacterial Agents Metabolism Bacterial Physiological Phenomena Bombyx Immunology Insect Hormones Biosynthesis Insect Proteins Animals Bacillus Physiology Blotting, Northern Microbiology Enterobacter Genetics RNA, Messenger Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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