author_facet Hanna, P C
Acosta, D
Collier, R J
Hanna, P C
Acosta, D
Collier, R J
author Hanna, P C
Acosta, D
Collier, R J
spellingShingle Hanna, P C
Acosta, D
Collier, R J
Proceedings of the National Academy of Sciences
On the role of macrophages in anthrax.
Multidisciplinary
author_sort hanna, p c
spelling Hanna, P C Acosta, D Collier, R J 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.90.21.10198 <jats:p>Bacillus anthracis, the causative agent of anthrax, produces systemic shock and death in susceptible animals, primarily through the action of its lethal toxin. This toxin, at high concentrations, induces lysis of macrophages in vitro but shows little or no effect on other cells. We found that when mice were specifically depleted of macrophages by silica injections, they became resistant to the toxin. Sensitivity could be restored by coinjection of toxin-sensitive cultured macrophages (RAW 264.7 cells) but not by coinjection of other cell lines tested. These results implied that macrophages mediate the action of lethal toxin in vivo and led us to investigate their role in death of the mammalian host. Sublytic concentrations of lethal toxin, orders of magnitude lower than those required to induce lysis of RAW 264.7 cells, were found to induce these cells to express interleukin 1 (IL-1) and tumor necrosis factor in vitro. Passive immunization against IL-1 or injection of an IL-1 receptor antagonist protected mice from toxin challenge, whereas anti-tumor necrosis factor provided little, if any, protection. These results imply that systemic shock and death from anthrax result primarily from the effects of high levels of cytokines, principally IL-1, produced by macrophages that have been stimulated by the anthrax lethal toxin.</jats:p> On the role of macrophages in anthrax. Proceedings of the National Academy of Sciences
doi_str_mv 10.1073/pnas.90.21.10198
facet_avail Online
Free
format ElectronicArticle
fullrecord blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA3My9wbmFzLjkwLjIxLjEwMTk4
id ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA3My9wbmFzLjkwLjIxLjEwMTk4
institution DE-Zi4
DE-Gla1
DE-15
DE-Pl11
DE-Rs1
DE-14
DE-105
DE-Ch1
DE-L229
DE-D275
DE-Bn3
DE-Brt1
DE-Zwi2
DE-D161
imprint Proceedings of the National Academy of Sciences, 1993
imprint_str_mv Proceedings of the National Academy of Sciences, 1993
issn 0027-8424
1091-6490
issn_str_mv 0027-8424
1091-6490
language English
mega_collection Proceedings of the National Academy of Sciences (CrossRef)
match_str hanna1993ontheroleofmacrophagesinanthrax
publishDateSort 1993
publisher Proceedings of the National Academy of Sciences
recordtype ai
record_format ai
series Proceedings of the National Academy of Sciences
source_id 49
title On the role of macrophages in anthrax.
title_unstemmed On the role of macrophages in anthrax.
title_full On the role of macrophages in anthrax.
title_fullStr On the role of macrophages in anthrax.
title_full_unstemmed On the role of macrophages in anthrax.
title_short On the role of macrophages in anthrax.
title_sort on the role of macrophages in anthrax.
topic Multidisciplinary
url http://dx.doi.org/10.1073/pnas.90.21.10198
publishDate 1993
physical 10198-10201
description <jats:p>Bacillus anthracis, the causative agent of anthrax, produces systemic shock and death in susceptible animals, primarily through the action of its lethal toxin. This toxin, at high concentrations, induces lysis of macrophages in vitro but shows little or no effect on other cells. We found that when mice were specifically depleted of macrophages by silica injections, they became resistant to the toxin. Sensitivity could be restored by coinjection of toxin-sensitive cultured macrophages (RAW 264.7 cells) but not by coinjection of other cell lines tested. These results implied that macrophages mediate the action of lethal toxin in vivo and led us to investigate their role in death of the mammalian host. Sublytic concentrations of lethal toxin, orders of magnitude lower than those required to induce lysis of RAW 264.7 cells, were found to induce these cells to express interleukin 1 (IL-1) and tumor necrosis factor in vitro. Passive immunization against IL-1 or injection of an IL-1 receptor antagonist protected mice from toxin challenge, whereas anti-tumor necrosis factor provided little, if any, protection. These results imply that systemic shock and death from anthrax result primarily from the effects of high levels of cytokines, principally IL-1, produced by macrophages that have been stimulated by the anthrax lethal toxin.</jats:p>
container_issue 21
container_start_page 10198
container_title Proceedings of the National Academy of Sciences
container_volume 90
format_de105 Article, E-Article
format_de14 Article, E-Article
format_de15 Article, E-Article
format_de520 Article, E-Article
format_de540 Article, E-Article
format_dech1 Article, E-Article
format_ded117 Article, E-Article
format_degla1 E-Article
format_del152 Buch
format_del189 Article, E-Article
format_dezi4 Article
format_dezwi2 Article, E-Article
format_finc Article, E-Article
format_nrw Article, E-Article
_version_ 1792348004478353417
geogr_code not assigned
last_indexed 2024-03-01T18:03:58.606Z
geogr_code_person not assigned
openURL url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=On+the+role+of+macrophages+in+anthrax.&rft.date=1993-11-01&genre=article&issn=1091-6490&volume=90&issue=21&spage=10198&epage=10201&pages=10198-10201&jtitle=Proceedings+of+the+National+Academy+of+Sciences&atitle=On+the+role+of+macrophages+in+anthrax.&aulast=Collier&aufirst=R+J&rft_id=info%3Adoi%2F10.1073%2Fpnas.90.21.10198&rft.language%5B0%5D=eng
SOLR
_version_ 1792348004478353417
author Hanna, P C, Acosta, D, Collier, R J
author_facet Hanna, P C, Acosta, D, Collier, R J, Hanna, P C, Acosta, D, Collier, R J
author_sort hanna, p c
container_issue 21
container_start_page 10198
container_title Proceedings of the National Academy of Sciences
container_volume 90
description <jats:p>Bacillus anthracis, the causative agent of anthrax, produces systemic shock and death in susceptible animals, primarily through the action of its lethal toxin. This toxin, at high concentrations, induces lysis of macrophages in vitro but shows little or no effect on other cells. We found that when mice were specifically depleted of macrophages by silica injections, they became resistant to the toxin. Sensitivity could be restored by coinjection of toxin-sensitive cultured macrophages (RAW 264.7 cells) but not by coinjection of other cell lines tested. These results implied that macrophages mediate the action of lethal toxin in vivo and led us to investigate their role in death of the mammalian host. Sublytic concentrations of lethal toxin, orders of magnitude lower than those required to induce lysis of RAW 264.7 cells, were found to induce these cells to express interleukin 1 (IL-1) and tumor necrosis factor in vitro. Passive immunization against IL-1 or injection of an IL-1 receptor antagonist protected mice from toxin challenge, whereas anti-tumor necrosis factor provided little, if any, protection. These results imply that systemic shock and death from anthrax result primarily from the effects of high levels of cytokines, principally IL-1, produced by macrophages that have been stimulated by the anthrax lethal toxin.</jats:p>
doi_str_mv 10.1073/pnas.90.21.10198
facet_avail Online, Free
format ElectronicArticle
format_de105 Article, E-Article
format_de14 Article, E-Article
format_de15 Article, E-Article
format_de520 Article, E-Article
format_de540 Article, E-Article
format_dech1 Article, E-Article
format_ded117 Article, E-Article
format_degla1 E-Article
format_del152 Buch
format_del189 Article, E-Article
format_dezi4 Article
format_dezwi2 Article, E-Article
format_finc Article, E-Article
format_nrw Article, E-Article
geogr_code not assigned
geogr_code_person not assigned
id ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA3My9wbmFzLjkwLjIxLjEwMTk4
imprint Proceedings of the National Academy of Sciences, 1993
imprint_str_mv Proceedings of the National Academy of Sciences, 1993
institution DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161
issn 0027-8424, 1091-6490
issn_str_mv 0027-8424, 1091-6490
language English
last_indexed 2024-03-01T18:03:58.606Z
match_str hanna1993ontheroleofmacrophagesinanthrax
mega_collection Proceedings of the National Academy of Sciences (CrossRef)
physical 10198-10201
publishDate 1993
publishDateSort 1993
publisher Proceedings of the National Academy of Sciences
record_format ai
recordtype ai
series Proceedings of the National Academy of Sciences
source_id 49
spelling Hanna, P C Acosta, D Collier, R J 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.90.21.10198 <jats:p>Bacillus anthracis, the causative agent of anthrax, produces systemic shock and death in susceptible animals, primarily through the action of its lethal toxin. This toxin, at high concentrations, induces lysis of macrophages in vitro but shows little or no effect on other cells. We found that when mice were specifically depleted of macrophages by silica injections, they became resistant to the toxin. Sensitivity could be restored by coinjection of toxin-sensitive cultured macrophages (RAW 264.7 cells) but not by coinjection of other cell lines tested. These results implied that macrophages mediate the action of lethal toxin in vivo and led us to investigate their role in death of the mammalian host. Sublytic concentrations of lethal toxin, orders of magnitude lower than those required to induce lysis of RAW 264.7 cells, were found to induce these cells to express interleukin 1 (IL-1) and tumor necrosis factor in vitro. Passive immunization against IL-1 or injection of an IL-1 receptor antagonist protected mice from toxin challenge, whereas anti-tumor necrosis factor provided little, if any, protection. These results imply that systemic shock and death from anthrax result primarily from the effects of high levels of cytokines, principally IL-1, produced by macrophages that have been stimulated by the anthrax lethal toxin.</jats:p> On the role of macrophages in anthrax. Proceedings of the National Academy of Sciences
spellingShingle Hanna, P C, Acosta, D, Collier, R J, Proceedings of the National Academy of Sciences, On the role of macrophages in anthrax., Multidisciplinary
title On the role of macrophages in anthrax.
title_full On the role of macrophages in anthrax.
title_fullStr On the role of macrophages in anthrax.
title_full_unstemmed On the role of macrophages in anthrax.
title_short On the role of macrophages in anthrax.
title_sort on the role of macrophages in anthrax.
title_unstemmed On the role of macrophages in anthrax.
topic Multidisciplinary
url http://dx.doi.org/10.1073/pnas.90.21.10198