Aminergic receptors in astrogliotic plaques from patients with multiple sclerosis

  • Zeinstra E
  • Te Riele P
  • Langlois X
 et al. 
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Cultured astrocytes express a spectrum of neurotransmitter receptors. However, little is known about these receptors in situ. We previously reported the absence of β2adrenergic receptors on astrocytes in multiple sclerosis (MS). Here we used [3H]-radioligands and receptor autoradiography to screen for a variety of other aminergic receptors in six silent chronic astrogliotic plaques in brain tissue obtained from five patients with MS. Dopamine D1and histamine H1receptors were absent. We detected specific binding for cholinergic muscarinic receptors > dopamine D2, α1-and α2-adrenergic receptors > 5-HT1A, 5-HT1B/D, 5-HT2A, 5-HT2c, 5-HT4, and dopamine D3receptors. Radiotracers for these aminergic receptors might be useful for studying astrogliosis in patients with MS, and compounds acting at some of these receptors may have potential to modulate astroglial function in MS. © 2002 Elsevier Science Ireland Ltd. All rights reserved.

Author-supplied keywords

  • Aminergic receptors
  • Astrocytes
  • Astrogliosis
  • Autoradiography
  • Multiple sclerosis

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  • Esther Zeinstra

  • Paula Te Riele

  • Xavier Langlois

  • Nadine Wilczak

  • Josée Leysen

  • Jacques De Keyser

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