Table 1.
Evaluation of TB effect of anti-rPSOP25 serum and mAb in mosquito feeding assays
Immunization groupsa | Monoclonal antibody transfer groupsb | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Control mice | rPSOP25 immunized mice | Control mice | mAb transferred mice | |||||||||
M1 | M2 | M3 | M1 | M2 | M3 | M1 | M2 | M3 | M1 | M2 | M3 | |
No. of mosquitoes infected/dissected | 30/30 | 30/30 | 29/30 | 20/28 | 20/30 | 19/28 | 28/29 | 27/28 | 28/28 | 22/30 | 21/29 | 20/29 |
Prevalence of infection (%)c | 100 | 100 | 99.7 | 71.4 | 66.7 | 67.9 | 96.6 | 96.4 | 100 | 73.3 | 72.4 | 69.0 |
Mean prevalence (%) | 99.9 | 68.7* | 97.7 | 71.6* | ||||||||
Reduction in prevalence (%)d | 31.2 | 26.1 | ||||||||||
Oocyst intensitye | 90.7 | 86.8 | 90.5 | 25.2 | 22.1 | 21.7 | 97.1 | 96.3 | 94.3 | 29.8 | 34.2 | 33.7 |
SEMf | 11.58 | 11.17 | 12.50 | 5.890 | 5.232 | 5.138 | 13.47 | 13.66 | 11.82 | 5.462 | 6.373 | 6.800 |
Mean oocyst intensity | 89.3 | 23.0* | 95.9 | 32.6* | ||||||||
Reduction in oocyst intensity (%)g | 66.3 | 63.3 |
aTB activity assay was carried out using rPSOP25-immunized mice
bTB activity assay was carried out using BALB/C mice transferred with the anti-PSOP25 mAb
cThe prevalence of infection was calculated by the number of mosquitoes with oocysts/total mosquitoes dissected in each group × 100%
dThe percent reduction of prevalence was calculated as % mean prevalence control – % mean prevalence PSOP25
eMean number of oocysts per mosquito midgut
fStandard error of the mean
gThe percent reduction in oocyst intensity was calculated as (mean oocyst intensity control – mean oocyst intensity PSOP25)/mean oocyst intensity control × 100%
*P < 0.001 for comparisons between the experimental group and the control group