Immunity promotes virulence evolution in a malaria model.
Immunity promotes virulence evolution in a malaria model.
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DOI:
10.1371/journal.pbio.0020230
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发表时间:
2004-09
期刊:
影响因子:
9.8
通讯作者:
Read AF
中科院分区:
文献类型:
--
作者:
Mackinnon MJ;Read AF
Evolutionary models predict that host immunity will shape the evolution of parasite virulence. While some assumptions of these models have been tested, the actual evolutionary outcome of immune selection on virulence has not. Using the mouse malaria model, Plasmodium chabaudi, we experimentally tested whether immune pressure promotes the evolution of more virulent pathogens by evolving parasite lines in immunized and nonimmunized (“naïve”) mice using serial passage. We found that parasite lines evolved in immunized mice became more virulent to both naïve and immune mice than lines evolved in naïve mice. When these evolved lines were transmitted through mosquitoes, there was a general reduction in virulence across all lines. However, the immune-selected lines remained more virulent to naïve mice than the naïve-selected lines, though not to immunized mice. Thus, immune selection accelerated the rate of virulence evolution, rendering parasites more dangerous to naïve hosts. These results argue for further consideration of the evolutionary consequences for pathogen virulence of vaccination. Immunisation against malaria can promote the evolution of more virulent pathogens in mice, making non-immunised mice more vulnerable -- a result with important implications for the development of malaria vaccines
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影响因子:
3.7
作者:
Best, SM;Kerr, PJ
通讯作者:
Kerr, PJ
DOI:
10.1084/jem.165.5.1269
发表时间:
1987-05-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Handunnetti SM;Mendis KN;David PH
通讯作者:
David PH
影响因子:
64.5
作者:
BARUCH, DI;PASLOSKE, BL;HOWARD, RJ
通讯作者:
HOWARD, RJ
影响因子:
2.4
作者:
KNOWLES, G;WALLIKER, D
通讯作者:
WALLIKER, D
DOI:
10.1111/j.1550-7408.1962.tb02591.x
发表时间:
1962-01-01
期刊:
JOURNAL OF PROTOZOOLOGY
影响因子:
--
作者:
COX, HW
通讯作者:
COX, HW