Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells
Distribution and development of the melanin-concentrating hormone (MCH) system were examined by immunocytochemistry of the brain, pituitary gland and skin of the South American cichlid fishCichlasoma dimerus. In adults, the most prominent group of MCH-ir perikarya was located in the nucleus laterali...
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todo:paper_0302766X_v311_n1_p61_Pandolfi2023-10-03T15:18:40Z Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells Pandolfi, M. Cánepa, M.M. Ravaglia, M.A. Maggese, M.C. Paz, D.A. Vissio, P.G. αMSH Brain Cichlasoma dimerus(Teleostei) Development Immunocytochemistry MCH Neuromasts Pituitary gland intermedin melanin melanin concentrating hormone alpha intermedin hypophysis hormone hypothalamus hormone melanin melanin concentrating hormone melanin-concentrating hormone animal tissue article blood vessel brain brain third ventricle cichlid controlled study epidermis female hypophysis hypothalamus nucleus hypothalamus periventricular nucleus immunohistochemistry immunoreactivity larva lateral brain ventricle male melanocyte nerve cell nonhuman ontogeny perikaryon posterior hypothalamus priority journal sense organ skin animal animal embryo chemistry cichlid cytology melanocyte posterior hypothalamus prenatal development skin Animalia Cichlasoma Cichlidae Teleostei alpha-MSH Animals Cichlids Embryo, Nonmammalian Hypothalamic Hormones Hypothalamus, Posterior Immunohistochemistry Melanins Melanocytes Neurons Pituitary Gland Pituitary Hormones Skin Distribution and development of the melanin-concentrating hormone (MCH) system were examined by immunocytochemistry of the brain, pituitary gland and skin of the South American cichlid fishCichlasoma dimerus. In adults, the most prominent group of MCH-ir perikarya was located in the nucleus lateralis tuberis (NLT). Outside the NLT, in the posterior hypothalamic region, a group of small neurons was found between the third ventricle and the lateral ventricular recess with delicate immunoreactive fibers that did not seem to contribute to the pituitary innervation. MCH-ir perikarya were identified at day 4 after hatching (AH) in a proliferating zone of the hypothalamic floor. Pituitary innervation could be detected at this stage. Another group of small MCH-ir neurons, only detected in pre-juvenile stages, originated close to the third ventricle in the medial hypothalamic region by day 6 AH.αMSH-ir neurons were localized in similar regions of the NLT and in the nucleus periventricularis posterior (NPP). Free MCH-ir neuromasts were detected in the ventral and dorsal skin of larval heads. These epidermal sensory organs were in close association with blood vessels and dermal melanocytes, suggesting that MCH synthesized in larval skin might act in an endocrine way reaching different targets and/or in a paracrine mode regulating melanin concentration in dermal melanocytes. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0302766X_v311_n1_p61_Pandolfi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
αMSH Brain Cichlasoma dimerus(Teleostei) Development Immunocytochemistry MCH Neuromasts Pituitary gland intermedin melanin melanin concentrating hormone alpha intermedin hypophysis hormone hypothalamus hormone melanin melanin concentrating hormone melanin-concentrating hormone animal tissue article blood vessel brain brain third ventricle cichlid controlled study epidermis female hypophysis hypothalamus nucleus hypothalamus periventricular nucleus immunohistochemistry immunoreactivity larva lateral brain ventricle male melanocyte nerve cell nonhuman ontogeny perikaryon posterior hypothalamus priority journal sense organ skin animal animal embryo chemistry cichlid cytology melanocyte posterior hypothalamus prenatal development skin Animalia Cichlasoma Cichlidae Teleostei alpha-MSH Animals Cichlids Embryo, Nonmammalian Hypothalamic Hormones Hypothalamus, Posterior Immunohistochemistry Melanins Melanocytes Neurons Pituitary Gland Pituitary Hormones Skin |
| spellingShingle |
αMSH Brain Cichlasoma dimerus(Teleostei) Development Immunocytochemistry MCH Neuromasts Pituitary gland intermedin melanin melanin concentrating hormone alpha intermedin hypophysis hormone hypothalamus hormone melanin melanin concentrating hormone melanin-concentrating hormone animal tissue article blood vessel brain brain third ventricle cichlid controlled study epidermis female hypophysis hypothalamus nucleus hypothalamus periventricular nucleus immunohistochemistry immunoreactivity larva lateral brain ventricle male melanocyte nerve cell nonhuman ontogeny perikaryon posterior hypothalamus priority journal sense organ skin animal animal embryo chemistry cichlid cytology melanocyte posterior hypothalamus prenatal development skin Animalia Cichlasoma Cichlidae Teleostei alpha-MSH Animals Cichlids Embryo, Nonmammalian Hypothalamic Hormones Hypothalamus, Posterior Immunohistochemistry Melanins Melanocytes Neurons Pituitary Gland Pituitary Hormones Skin Pandolfi, M. Cánepa, M.M. Ravaglia, M.A. Maggese, M.C. Paz, D.A. Vissio, P.G. Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| topic_facet |
αMSH Brain Cichlasoma dimerus(Teleostei) Development Immunocytochemistry MCH Neuromasts Pituitary gland intermedin melanin melanin concentrating hormone alpha intermedin hypophysis hormone hypothalamus hormone melanin melanin concentrating hormone melanin-concentrating hormone animal tissue article blood vessel brain brain third ventricle cichlid controlled study epidermis female hypophysis hypothalamus nucleus hypothalamus periventricular nucleus immunohistochemistry immunoreactivity larva lateral brain ventricle male melanocyte nerve cell nonhuman ontogeny perikaryon posterior hypothalamus priority journal sense organ skin animal animal embryo chemistry cichlid cytology melanocyte posterior hypothalamus prenatal development skin Animalia Cichlasoma Cichlidae Teleostei alpha-MSH Animals Cichlids Embryo, Nonmammalian Hypothalamic Hormones Hypothalamus, Posterior Immunohistochemistry Melanins Melanocytes Neurons Pituitary Gland Pituitary Hormones Skin |
| description |
Distribution and development of the melanin-concentrating hormone (MCH) system were examined by immunocytochemistry of the brain, pituitary gland and skin of the South American cichlid fishCichlasoma dimerus. In adults, the most prominent group of MCH-ir perikarya was located in the nucleus lateralis tuberis (NLT). Outside the NLT, in the posterior hypothalamic region, a group of small neurons was found between the third ventricle and the lateral ventricular recess with delicate immunoreactive fibers that did not seem to contribute to the pituitary innervation. MCH-ir perikarya were identified at day 4 after hatching (AH) in a proliferating zone of the hypothalamic floor. Pituitary innervation could be detected at this stage. Another group of small MCH-ir neurons, only detected in pre-juvenile stages, originated close to the third ventricle in the medial hypothalamic region by day 6 AH.αMSH-ir neurons were localized in similar regions of the NLT and in the nucleus periventricularis posterior (NPP). Free MCH-ir neuromasts were detected in the ventral and dorsal skin of larval heads. These epidermal sensory organs were in close association with blood vessels and dermal melanocytes, suggesting that MCH synthesized in larval skin might act in an endocrine way reaching different targets and/or in a paracrine mode regulating melanin concentration in dermal melanocytes. |
| format |
JOUR |
| author |
Pandolfi, M. Cánepa, M.M. Ravaglia, M.A. Maggese, M.C. Paz, D.A. Vissio, P.G. |
| author_facet |
Pandolfi, M. Cánepa, M.M. Ravaglia, M.A. Maggese, M.C. Paz, D.A. Vissio, P.G. |
| author_sort |
Pandolfi, M. |
| title |
Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| title_short |
Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| title_full |
Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| title_fullStr |
Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| title_full_unstemmed |
Melanin-concentrating hormone system in the brain and skin of the cichlid fish Cichlasoma dimerus: Anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| title_sort |
melanin-concentrating hormone system in the brain and skin of the cichlid fish cichlasoma dimerus: anatomical localization ontogeny and distribution in comparison to α-melanocyte-stimulating hormone-expressing cells |
| url |
http://hdl.handle.net/20.500.12110/paper_0302766X_v311_n1_p61_Pandolfi |
| work_keys_str_mv |
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