ManNAc treatment appeared to ameliorate the hyposialylation status of mutant mice, indicated by a lectin histochemistry pattern similar to that of wild-type mice, with improved sialylation of both nephrin and podocalyxin, as well as reduced albuminuria compared with untreated mutant mice.
In response to VEGF-A, macrophages derived from Flt-1 mutant mice indicated deranged chemotaxis [ 7] demonstrating that Flt-1 may mediate the migration of monocyte/macrophage lineages.
Although strong immunoreactivity with an otoferlin-specific antibody was detected in cochlear hair cells of wildtype mice, no expression was detected in mutant mice, indicating that the missense mutation has a severe effect on the stability of the protein and potentially its localization.
The ability to reverse age deterioration in the mutant mice indicates that the cells that divide to replenish tissues don't simply die when their telomere clock expires, says DePinho.
However, the greatest defect in lung bacterial clearance was observed in TLR4lps-d/TLR9−/− double mutant mice, indicating that both TLR4 and TLR9 are required for optimal clearance.
In addition, the magnitude of potentiation induced by these monoamines significantly correlated with each other in the mutant mice, indicating that a subpopulation of sandy mice has marked hypersensitivity to both serotonin and dopamine.
However, no difference in the ratio of TUNEL-positive cells was apparent between control and mutant mice, indicating that increased cell death does not substantially contribute to impaired cerebellar size (Fig. S2).
Similar reduction of GAP43 mRNA detection and augmentation of ScMAS staining were observed in cortical extracts from doubly mutant mice, indicating that these alterations could take place in the absence of microglial cell priming by HS oligosaccharides.
However, at five months of age there was a marked reduction in the thickness of the outer nuclear layer (ONL) in both heterozygous and homozygous mutant mice, indicating a loss of photoreceptor nuclei.
Interestingly, the accumulation of preadipocytes is a rather dominant phenotype, which prevailed even in Nscl-2/leptin compound mutant mice indicating that leptin most probably is not involved in this process.
In vitro, mutant E155G GCAP1 results in a reduced sensitivity of cyclase activity to Ca2+ inhibition [22], and the elevated levels of cGMP seen in the retinae of the Guca1aCOD3 mutant mice indicate that the mutant GCAP1 is having a similar effect in vivo, so the delay in recovery is presumably a consequence of these elevated levels of cGMP.
