[Experimental observation of SIVmac239 Chinese rhesus monkey model at sub-acute phase of AIDS].
OBJECTIVE
To observe T lymphocyte subsets and indicators of changes in viral load in sub-acute period in Chinese rhesus monkey model of AIDS SIVmac239. To explore Virology related index variation in sub-acute period of the Chinese rhesus monkey model of AIDS.


METHODS
To replicate Chinese rhesus monkey model of AIDS, healthy Chinese rhesus monkey was inoculated with SIVmac239 viral strain. To observe changes in T lymphocyte subsets indexes and viral load after infection with the simian immunodeficiency virus (SIV) in sub-acute period on an animal model. The clinical symptoms of the animal model was recorded simultaneously.


RESULTS
During the 10 weeks after SIV acute infection, body weight and BMI index were relatively stable, the difference was not significant at all time points. Twelve monkeys were tested SIV positive by real-time PCR after three days of infection. On the 7th day after infection, 15 monkeys were tested SIV positive. Viral load increased rapidly, but reached a peak on the 10th-14th day after infection, then showed a level of volatility decline. T lymphocyte subsets showed significant changes, among them, CD3% and CD3 counts fluctuated upward trend and reached to the highest level in two weeks after infection; of CD4% and CD4 count changes were not synchronized, CD4% declined trend while the CD4 count was an increasing trend after the infection; of CD8% and CD8 counts fluctuate upward trend, and reached to a highest level in two weeks after infection ;the ratio of CD4/CD8 and the counts of CD4CD28 T cells decreased significantly in two weeks after infection; the former followed by a slow decline, the latter followed by a rapid rise. Three mouths after the infection 3 monkeys showed significant clinical symptoms. One of the rhesus monkeys had symptoms of diarrhea and two of them had reduced food intake.


CONCLUSIONS
This experiments established standardization of Chinese Rhesus monkeys used in the research of AIDS and provide a detailed contents in the changes of sub-acute phase.
Tropical Medicine Institute, Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
Jing
J
Chen
Mao-Qing
MQ
Li
Lin-Chun
LC
Fu
Qing-Zhong
QZ
Zhang
Jian-Tao
JT
Chen
Dong-Ren
DR
Hu
Hong-Yan
HY
Zhou
D000163:Acquired Immunodeficiency Syndrome; D000208:Acute Disease; D000818:Animals; D002452:Cell Count; D004195:Disease Models, Animal; D008253:Macaca mulatta; D008297:Male; D016097:Simian Acquired Immunodeficiency Syndrome / Q000276:immunology; D015302:Simian Immunodeficiency Virus / Q000502:physiology*; D016176:T-Lymphocyte Subsets / Q000276:immunology; D019562:Viral Load