Table 1.
Effects of probucol or CoQ10 supplementation on renal disease manifestations of B6.Pdss2kd/kd missense mutant mice
| Strain | Gender | Treatment group | Treatment duration | N | Age at sacrifice (Days) | Nephritis score | Urine albumin (mg/24 h) | Albumin comparison group | Albumin p-value |
|---|---|---|---|---|---|---|---|---|---|
| B6 | M | No treatment | n/a | 14 | 156 ± 48.58 | 0.43 ± 0.46 | 0.46 ± 0.61 | ||
| B6 | F | No treatment | n/a | 12 | 156 ± 59.57 | 0.63 ± 0.62 | 0.22 ± 0.12 | ||
| B6.Pdss2kd/kd | M | No treatment | n/a | 24 | 135 ± 18.37 | 1.61 ± 0.93 | 10.60 ± 9.12 | ||
| B6.Pdss2kd/kd | F | No treatment | n/a | 20 | 136 ± 20.49 | 2.69 ± 0.99 | 31.47 ± 30.12 | B6.Pdss2kd/kd males | p < 0.001 |
| B6.Pdss2kd/kd | M | CoQ10 | Birth to sacrifice | 7 | 145 ± 8.29 | 0.69 ± 0.43 | 3.64 ± 4.85 | B6.Pdss2kd/kd untreated males | p < 0.05 |
| B6.Pdss2kd/kd | F | CoQ10 | Birth to sacrifice | 13 | 144 ± 16.29 | 0.71 ± 0.70 | 2.24 ± 1.79 | B6.Pdss2kd/kd untreated females | p < 0.001 |
| B6.Pdss2kd/kd | M | CoQ10 | Weaning to sacrifice | 6 | 125 ± 4.5 | 1.67 ± 0.75 | 4.11 ± 2.04 | B6.Pdss2kd/kd untreated males | p < 0.01 |
| B6.Pdss2kd/kd | F | CoQ10 | Weaning to sacrifice | 4 | 124 ± 3.19 | 2.26 ± 0.92 | 1.75 ± 0.43 | B6.Pdss2kd/kd untreated females | p < 0.001 |
| B6.Pdss2kd/kd | M | CoQ10 | Day 100 to sacrifice | 6 | 121 ± 0.94 | 1.42 ± 0.45 | 10.47 ± 3.47 | B6.Pdss2kd/kd untreated males | p > 0.05 |
| B6.Pdss2kd/kd | F | CoQ10 | Day 100 to sacrifice | 5 | 121 ± 0 | 1.30 ± 0.40 | 4.08 ± 1.15 | B6.Pdss2kd/kd untreated females | p < 0.001 |
| B6.Pdss2kd/kd | M | Probucol | Birth to sacrificea | 5 | 206 ± 0 | 0.6 ± 0.49 | 0.76 ± 0.14 | B6.Pdss2kd/kd untreated males | p < 0.001 |
| B6.Pdss2kd/kd | F | Probucol | Birth to sacrifice | 3 | 206 ± 0 | 1.67 ± 0.47 | 19.01 ± 9.50 | B6.Pdss2kd/kd untreated females | p > 0.05 |
| B6.Pdss2kd/kd | M | Probucol | Weaning to sacrifice | 14 | 156 ± 30.36 | 0.57 ± 0.82 | 1.15 ± 1.12 | B6.Pdss2kd/kd untreated males | p < 0.001 |
| B6.Pdss2kd/kd | F | Probucol | Weaning to sacrifice | 11 | 136 ± 9.43 | 0.55 ± 0.99 | 1.42 ± 0.91 | B6.Pdss2kd/kd untreated females | p < 0.001 |
| B6.Pdss2kd/kd | M | Probucol | Day 100 to sacrifice | 5 | 122 ± 0 | 1.40 ± 0.37 | 0.64 ± 0.17 | B6.Pdss2kd/kd untreated males | p < 0.001 |
| B6.Pdss2kd/kd | F | Probucol | Day 100 to sacrifice | 4 | 122 ± 0 | 0.88 ± 0.55 | 1.53 ± 0.36 | B6.Pdss2kd/kd untreated females | p < 0.001 |
| B6.Pdss2kd/kd | M | Vitamin E | Weaning to sacrifice | 9 | 122 ± 2.85 | 1.56 ± 0.50 | 11.58 ± 4.23 | B6.Pdss2kd/kd untreated males | p > 0.05 |
| B6.Pdss2kd/kd | F | Vitamin E | Weaning to sacrifice | 10 | 120 ± 2.20 | 1.20 ± 0.40 | 11.38 ± 4.72 | B6.Pdss2kd/kd untreated females | p < 0.01 |
Probucol therapy significantly prevented renal sequelae that are typically manifest by 4 months of age whether administered either from the time of weaning or for only 3 weeks prior to sacrifice, with significant disease prevention still evident through approximately 6 months of age. CoQ10 therapy significantly prevented renal manifestations only when provided from weaning through 4 months of age, although significantly greater effects were seen with probucol than CoQ10 at all treatment durations tested (p < 0.01 at younger age when treated from weaning; p < 0.001 at younger age when treated for 3 weeks prior to sacrifice; and p < 0.001 at older age). All values are reported as mean ± standard deviation. p-Values were calculated based on urine albumin by Mann–Whitney U-test relative to designated (male or female) age-matched untreated B6.Pdss2kd/kd animals.
Probucol treated missense mutant males showed the greatest therapeutic response in urine albumin at all ages examined, from the earliest age (122 days) through the oldest (206 days).