Co-localization of hypocretin-1 and hypocretin-2 in the cat hypothalamus and brainstem.

Abstract:

:Hypocretin-1 (hcrt-1) and hypocretin-2 (hcrt-2) are two recently discovered hypothalamic neuropeptides. In the present study, using double immunofluorescent techniques, the co-localization of hcrt-1 and hcrt-2 was examined in neuronal soma and fibers/terminals located, respectively, in the cat hypothalamus and brainstem. In the hypothalamus, all hcrt-1 positive neuronal soma also displayed hcrt-2 immunoreactivity. In the brainstem, both hcrt-1 and hcrt-2 antibodies labeled the same fibers/terminals, indicating that hcrt-1 and hcrt-2 co-localize not only in the neuronal soma (hypothalamus) but also in their fibers/terminals (brainstem). If both peptides are released following neuronal activity, then the distinct effects of these peptides in the brain are likely to depend on the types of postsynaptic receptors that are activated.

journal_name

Peptides

journal_title

Peptides

authors

Zhang JH,Sampogna S,Morales FR,Chase MH

doi

10.1016/s0196-9781(02)00084-0

subject

Has Abstract

pub_date

2002-08-01 00:00:00

pages

1479-83

issue

8

eissn

0196-9781

issn

1873-5169

pii

S0196978102000840

journal_volume

23

pub_type

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