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- W1985441433 abstract "Neuronal nicotinic acetylcholine receptors are members of the ligand-gated ion channel superfamily composed of α and β subunits with specific structural, functional and pharmacological properties. In this study we have used immunohistochemistry to investigate the presence of nicotinic acetylcholine receptor subunits in human cerebellum. Tissue was obtained at autopsy from eight adult individuals (aged 36–56 years). Histological sections were prepared from formalin-fixed paraffin-embedded material. α3, α4, α6, α7, β2, and β4 subunits were present in this brain area associated with both neuronal and non-neuronal cell types. Most Purkinje cells were immunoreactive for all the above subunits, but most strongly for α4 and α7. A proportion of granule cell somata were immunoreactive for all subunits except α3. Punctate immunoreactivity in Purkinje cell and granule cell layers was evident with antibodies against α3, α4, α6, and α7 in parallel with synaptophysin immunoreactivity, suggesting the presence of these subunits on nerve terminals in the human cerebellum. All subunits were present in the dentate nucleus associated with neurones and cell processes. Strong immunoreactivity of neuropil in both the molecular and granule cell layers and within the dentate nucleus was noted with α4, α7 and β4 subunits. Astrocytes and astrocytic cell processes appeared to be immunoreactive for α7 and cell processes observed in white matter, also possibly astrocytic, were immunoreactive for β2. Immunoreactivity to all subunits was noted in association with blood vessels. We suggest that nicotinic acetylcholine receptor subunits may be involved in the modulation of cerebellar activity. Further investigations are warranted to evaluate the participation of nicotinic acetylcholine receptors in cerebellar pathology associated with both developmental and age-related disorders." @default.
- W1985441433 created "2016-06-24" @default.
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- W1985441433 date "2002-09-01" @default.
- W1985441433 modified "2023-09-24" @default.
- W1985441433 title "Immunohistochemical localisation of nicotinic acetylcholine receptor subunits in human cerebellum" @default.
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