Sökning: "neuronal replacement"
Visar resultat 1 - 5 av 56 avhandlingar innehållade orden neuronal replacement.
1. Neuroprotection and neurogenesis after experimental stroke
Sammanfattning : In this thesis, two potential endogenous mechanisms for neuronal survival and repair have been investigated in a rat model of stroke, middle cerebral artery occlusion (MCAO): signaling of the GDNF family of neurotrophic factors, and neurogenesis from endogenous progenitor cells. As determined by in situ hybridization for GDNF family ligand and receptor genes, MCAO caused widespread upregulation of both components of the functional GDNF receptor, c-Ret and GFRalpha1, indicating that GDNF may be a survival signal in stroke. LÄS MER
2. Generation of midbrain dopaminergic neurons in vivo and in vitro: the role of Neurogenin2
Sammanfattning : Parkinsons disease (PD) is a neurodegenerative disorder where dopaminergic neurons of the substantia nigra (SNc) in the mesencephalon are progressively eliminated. The ensuing loss of dopaminergic innervation of the basal ganglia manifests itself as severe motor deficits in PD patients. LÄS MER
3. Directing and Dissecting the Fate of Dopaminergic Neurons - Multiple Avenues towards Cell Replacement Therapy in Parkinson's Disease
Sammanfattning : .... LÄS MER
4. Cell Replacement Therapy for Parkinson's Disease: Potential for Circuitry Repair
Sammanfattning : The derivation of dopamine neurons from human embryonic stem cells (hESCs) now offers a promising alternative to fetal tissue for cell replacement therapy (CRT) in Parkinson´s disease (PD). Using the appropriate chemical cues in vitro, hESCs can be patterned towards bona-fide ventral midbrain (VM) DA neurons that survive, reinnervate, release DA and provide functional recovery when transplanted into rodent and non-human primate models of PD. LÄS MER
5. Investigating a cell replacement therapy in the inner ear
Sammanfattning : The mammalian auditory system is sensitive to genetic disorders, aging and injuries caused by overstimulation, ototoxic drugs and viral infections. Since the sensory epithelium (the organ of Corti) and the spiral ganglion neurons (SGNs) in adult mammalian do not regenerate spontaneously when they are damaged, a cell substitution strategy was proposed to compensate the function of the degenerated SGNs. LÄS MER