Nejvíce citovaný článek - PubMed ID 10718908
Prolactin-releasing peptide (PrRP) has been proposed to mediate the central satiating effects of cholecystokinin (CCK) through the vagal CCK1 receptor. PrRP acts as an endogenous ligand of G protein-coupled receptor 10 (GPR10), which is expressed at the highest levels in brain areas related to food intake regulation, e.g., the paraventricular hypothalamic nucleus (PVN) and nucleus of the solitary tract (NTS). The NTS and PVN are also significantly activated after peripheral CCK administration. The aim of this study was to determine whether the endogenous PrRP neuronal system in the brain is involved in the central anorexigenic effect of the peripherally administered CCK agonist JMV236 or the CCK1 antagonist devazepide and whether the CCK system is involved in the central anorexigenic effect of the peripherally applied lipidized PrRP analog palm-PrRP31 in fasted lean mice. The effect of devazepide and JMV236 on the anorexigenic effects of palm-PrRP31 as well as devazepide combined with JMV236 and palm-PrRP31 on food intake and Fos cell activation in the PVN and caudal NTS was examined. Our results suggest that the anorexigenic effect of JMV236 is accompanied by activation of PrRP neurons of the NTS in a CCK1 receptor-dependent manner. Moreover, while the anorexigenic effect of palm-PrRP31 was not affected by JMV236, it was partially attenuated by devazepide in fasted mice. The present findings indicate that the exogenously influenced CCK system may be involved in the central anorexigenic effect of peripherally applied palm-PrRP31, which possibly indicates some interaction between the CCK and PrRP neuronal systems.
- MeSH
- anorektika aplikace a dávkování MeSH
- antagonisté hormonů aplikace a dávkování MeSH
- chemokiny CC účinky léků metabolismus MeSH
- cholecystokinin metabolismus MeSH
- devazepid aplikace a dávkování MeSH
- hormon uvolňující prolaktin aplikace a dávkování analogy a deriváty MeSH
- injekce intraperitoneální MeSH
- injekce subkutánní MeSH
- myši inbrední C57BL MeSH
- myši MeSH
- nucleus paraventricularis hypothalami účinky léků metabolismus MeSH
- nucleus solitarius účinky léků metabolismus MeSH
- omezení příjmu potravy MeSH
- peptidové fragmenty aplikace a dávkování MeSH
- přijímání potravy účinky léků MeSH
- protoonkogenní proteiny c-fos metabolismus MeSH
- signální transdukce MeSH
- sinkalid aplikace a dávkování analogy a deriváty MeSH
- stravovací zvyklosti účinky léků MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- myši MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- anorektika MeSH
- antagonisté hormonů MeSH
- Ccl28 protein, mouse MeSH Prohlížeč
- chemokiny CC MeSH
- cholecystokinin MeSH
- devazepid MeSH
- Fos protein, mouse MeSH Prohlížeč
- hormon uvolňující prolaktin MeSH
- JMV 236 MeSH Prohlížeč
- palm11-PrRP31 MeSH Prohlížeč
- peptidové fragmenty MeSH
- protoonkogenní proteiny c-fos MeSH
- sinkalid MeSH
Prolactin-releasing peptide (PrRP) belongs to the large RF-amide neuropeptide family with a conserved Arg-Phe-amide motif at the C-terminus. PrRP plays a main role in the regulation of food intake and energy expenditure. This review focuses not only on the physiological functions of PrRP, but also on its pharmacological properties and the actions of its G-protein coupled receptor, GPR10. Special attention is paid to structure-activity relationship studies on PrRP and its analogs as well as to their effect on different physiological functions, mainly their anorexigenic and neuroprotective features and the regulation of the cardiovascular system, pain, and stress. Additionally, the therapeutic potential of this peptide and its analogs is explored.
- Klíčová slova
- GPR10, RF-amide peptides, energy expenditure, food intake regulation, neuroprotection, prolactin-releasing peptide, signaling,
- MeSH
- energetický metabolismus účinky léků MeSH
- hormon uvolňující prolaktin chemie metabolismus farmakologie MeSH
- lidé MeSH
- neurodegenerativní nemoci farmakoterapie patologie MeSH
- neuroprotektivní látky chemie farmakologie terapeutické užití MeSH
- přijímání potravy účinky léků MeSH
- receptory spřažené s G-proteiny chemie genetika metabolismus MeSH
- signální transdukce účinky léků MeSH
- vztahy mezi strukturou a aktivitou MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- Názvy látek
- hormon uvolňující prolaktin MeSH
- neuroprotektivní látky MeSH
- PRLHR protein, human MeSH Prohlížeč
- receptory spřažené s G-proteiny MeSH