Abstract:
:Neuropeptide F in invertebrates is a homolog of neuropeptide Y in mammals and it is a member of FMRFamide-related peptides. In arthropods, such as insects, there are two types of neuropeptide F comprising long neuropeptide F (NPF) and short neuropeptide F (sNPF). Both NPFs are known to play a crucial role in the regulations of foraging, feeding-related behaviors, circadian rhythm, stress responses, aggression and reproduction in invertebrates. We have earlier found that in the giant freshwater prawn, Macrobrachium rosenbergii, there are three isoforms of NPF and four isoforms of sNPF and that NPFs are expressed in the eyestalks and brain. In the present study, we investigate further the tissue distribution of NPF-I in the ventral nerve cord (VNC) and its role in the development of testes in small male (SM) Macrobrachium rosenbergii. By immunolocalization, using the rabbit polyclonal antibody against NPF-I as a probe, we could detect NPF-I immunoreactivity in the neuropils and neuronal clusters of the subesophageal ganglia (SEG), thoracic ganglia (TG) and abdominal ganglia (AG) of the SM prawns. In functional assays, the administrations of synthetic NPF-I (KPDPTQLAAMADALKYLQELDKYYSQVSRPRFamide) and sNPF (APALRLRFamide) peptides significantly increased the growth rates of SM prawns and significantly increased the gonadosomatic index (GSI) and proliferations of early germ cells in the seminiferous tubules of their testes. It is, therefore, suggestive that NPFs may play critical roles in energy homeostasis towards promoting growth as well as testicular development in prawns that could be applied in the aquaculture of this species.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Thongrod S,Wanichanon C,Sobhon Pdoi
10.1007/s00441-019-02999-8subject
Has Abstractpub_date
2019-06-01 00:00:00pages
471-484issue
3eissn
0302-766Xissn
1432-0878pii
10.1007/s00441-019-02999-8journal_volume
376pub_type
杂志文章abstract::In the salmon and trout aminergic cell bodies were found in the nucleus recessus lateralis (NRL) and the nucleus recessus posterioris (NRP), both of which are situated near the third ventricle. Three cell types could be distinguished. Type 1 produces a green and type 2 a yellow fluorescence. The former type probably c...
journal_title:Cell and tissue research
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abstract::The three-dimensional ultrastructure of the pineal body of the rat is described on the basis of freeze-fractured preparations. The pineal capsule consists of irregular cells with very flat and perforated processes. Through these openings, extremely branched canaliculi, extending to almost every pineal cell, communicat...
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
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journal_title:Cell and tissue research
pub_type: 杂志文章
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