Distribution and Neurotransmitter Localization in the Heart of the Ray-finned fish, Bichir Polypterus bichir bichir Geoffroy St Hilaire, 1802.
Articolo
Data di Pubblicazione:
2009
Abstract:
Anatomical andphysiologicalstudiesofcardiovascularcontrolarelackingintheray-
finned fish,thebichirs.Thepresentimmunohistochemicalstudiesonthebichir
(Polypterus bichirbichir) demonstratedtheoccurrenceofintracardiacneuronsand
nerve fibersintheheart.Immunoreactivitytotyrosinehydroxylase(TH)and
acetylcholinesterase (AchE)andvariousneuropeptides(substanceP,galanin,
vasoactive intestinalpolypeptide(VIP)andpituitaryadenylatecyclase-activating
peptide (PACAP)),includingneuronalnitricoxidesynthase(nNOS),wasfoundinthe
nerve cellbodieslyingclosetothe Sinus venosus and thesino-atrialregion.Themain
intracardiac localizationofthenervoustissueisanetworkofnervefibers,
presumably correspondingtothepostganglionicoutflowgivingrisetonerve
terminals andthenervecellbodies.Inaddition,theheartisinnervatedbyextrinsic
monoamine-containing nervefiberssupplyingthe Conus arteriosus and Sinus
venosus, andsubstancePandgalaninimmunopositivefibersprobablyoriginating
from cranialandspinalganglia.Theadrenergicinnervationoftheheartofthebichir
is similartothatoftheteleosts,butfurtherstudiesarerequiredonnervouscontrol
of theheart.
finned fish,thebichirs.Thepresentimmunohistochemicalstudiesonthebichir
(Polypterus bichirbichir) demonstratedtheoccurrenceofintracardiacneuronsand
nerve fibersintheheart.Immunoreactivitytotyrosinehydroxylase(TH)and
acetylcholinesterase (AchE)andvariousneuropeptides(substanceP,galanin,
vasoactive intestinalpolypeptide(VIP)andpituitaryadenylatecyclase-activating
peptide (PACAP)),includingneuronalnitricoxidesynthase(nNOS),wasfoundinthe
nerve cellbodieslyingclosetothe Sinus venosus and thesino-atrialregion.Themain
intracardiac localizationofthenervoustissueisanetworkofnervefibers,
presumably correspondingtothepostganglionicoutflowgivingrisetonerve
terminals andthenervecellbodies.Inaddition,theheartisinnervatedbyextrinsic
monoamine-containing nervefiberssupplyingthe Conus arteriosus and Sinus
venosus, andsubstancePandgalaninimmunopositivefibersprobablyoriginating
from cranialandspinalganglia.Theadrenergicinnervationoftheheartofthebichir
is similartothatoftheteleosts,butfurtherstudiesarerequiredonnervouscontrol
of theheart.
Tipologia CRIS:
14.a.1 Articolo su rivista
Keywords:
Heart, Neurotransmitters, Perikarya, Nerve fibers, Bichir, Fish, Polypterus bichir bichir
Elenco autori:
ZACCONE G; A. MAUCERI; MAISANO M; GIANNETTO A; PARRINO V; FASULO S
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