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Myoinhibitory pepti...
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Kolodziejczyk, AgataStockholms universitet,Zoologiska institutionen
(författare)
Myoinhibitory peptide (MIP) immunoreactivity in the visual system of the blowfly Calliphora vomitoria in relation to putative clock neurons and serotonergic neurons
- Artikel/kapitelEngelska2011
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2011-06-10
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Springer Science and Business Media LLC,2011
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printrdacarrier
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LIBRIS-ID:oai:DiVA.org:su-60158
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-60158URI
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https://doi.org/10.1007/s00441-011-1198-2DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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A few types of peptidergic clock neurons have been identified in the fruitfly Drosophila, whereas in blowflies, only pigment-dispersing factor (PDF)-immunoreactive lateral ventral clock neurons (LNvs) have been described. In blowflies, but not Drosophila, a subset of these PDF-expressing neurons supplies axon branches to a region outside the synaptic layer of the lamina, the most peripheral optic lobe neuropil. In Drosophila, similar lamina processes are instead supplied by non-clock neurons (LMIo) that express myoinhibitory peptide (MIP). We have investigated the distribution of MIP-immunoreactive neurons in the visual system of the blowfly Calliphora vomitoria and found neurons resembling the three LMIos, but without processes to the lamina. In Calliphora, PDF-immunoreactive processes of LNvs in the lamina closely impinge on branching serotonin-immunoreactive axon terminations in the same region. We have also identified, in the blowfly, two types of putative clock neurons that label with an antiserum to ion-transport peptide (ITP). The presence of serotonin-immunoreactive neurons supplying processes to the lamina seems to be a conserved feature in dipteran flies. The morphology of the two types of ITP-immunoreactive clock neurons might also be conserved. However, peptidergic neurons with branches converging on the serotonin-immunoreactive neurons in the lamina are of different morphological types and express PDF in blowflies and MIP in Drosophila. The central circuitry of these PDF- and MIP-expressing neurons probably differs; consequently, whether their convergence on serotonergic neurons subserves similar functions in the two species is unclear.
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Nässel, Dick R.Stockholms universitet,Zoologiska institutionen(Swepub:su)dnassel
(författare)
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Stockholms universitetZoologiska institutionen
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Cell and Tissue Research: Springer Science and Business Media LLC345:1, s. 125-1350302-766X1432-0878
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