Although intestinal homeostasis is maintained by intestinal stem cells (ISCs), regeneration is impaired upon aging.
A prerequisite for using tracer-labeled mAbs in clinical immuno-PET or PID is that the radionuclide or dye is coupled to the mAb in an inert way, which means that the binding characteristics, pharmacokinetics, and dynamics of the mAb do not become impaired upon coupling of these tracers.
Furthermore, antigen-specific T cells proliferation was also impaired upon infection.
Conversely, complex II-dependent respiratory capacity is significantly impaired upon dysfunction of membrane-bound subcomplex 1β subunits.
Furthermore, in conditional HNF4α knockout mice β-cell function was impaired upon glucose-stimulated insulin secretion [19] [21].
Thus, these data suggest that wild type BRCA1 upregulates TGF-β1-mediated transcription, which is impaired upon inactivation of BRCA1 by germline mutations.
Additionally, in conditional HNF4α knockout mice β-cell function was impaired upon glucose-stimulated insulin secretion [19] [21] whereas HNF1α knockout mice develop diabetes [22].
However, the function of the proteasome has also been reported to be impaired upon aging, which may account for inefficient removal of damaged proteins [41], [46], [47].
This effect could be exploited in other skin diseases such as atopic dermatitis (AD) where cathelicidin AMP induction is impaired upon skin infection [6], [44].
Also TLR7 responses were impaired upon P. falciparum infection in Dogon children and IFN-α and TNF-α levels were lower in PBMCs stimulated with imiquimod in infected Dogon as compared to their uninfected peers.
We also found that proliferation and growth of glioma cancer stem cells were severely impaired upon knockdown of c-Myc, but importantly, the cell cycle progression of CD133− glioma cells were relatively insensitive to loss of c-Myc.
