Decline in Chemokine Gene Expression during SHIV Infection
Author Information
Author(s): Zhao Wei, Pahar Bapi, Borda Juan T., Alvarez Xavier, Sestak Karol
Primary Institution: Tulane National Primate Research Center
Hypothesis
The study hypothesizes that SHIVSF162P4-induced CC-chemokine down-regulation at the acute stage of infection is not proportionately related to peripheral CD4+ T cell depletion.
Conclusion
The study found that SHIVSF162P4 down-regulated CC-chemokine gene expression during the acute stage of infection more than SHIVKu1, and this down-regulation was not linked to CD4+ T cell depletion.
Supporting Evidence
- All five SHIVSF162P4-inoculated macaques became infected as determined by individual viral load measurements.
- The lowest gene expression was detected at PID 14, coinciding with the peak of primary SHIVSF162P4 infection.
- By PID 180, expressions of all three chemokine genes were no longer significantly different from those prior to infection.
Takeaway
When monkeys got a type of HIV, their bodies made less of certain chemicals that help fight the virus, but this didn't happen when the infection got older.
Methodology
Five rhesus macaques were inoculated with CCR5-tropic SHIVSF162P4, and gene expression of CCL3, CCL4, and CCL5 was measured at various time points using real-time PCR.
Limitations
The study primarily focused on acute infection stages and may not fully represent chronic infection dynamics.
Participant Demographics
Five adult rhesus macaques of Indian origin were used in the study.
Statistical Information
P-Value
p<0.05 for CCL4 and CCL5; p<0.005 for CCL3
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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