Leptin, leptin receptors and ACTH immunoreactivities are present in the gastrointestinal tract and the neural tube of tadpoles of the newt Triturus

Journal of Molecular Histology
S Buono, R Putti

Abstract

Leptin, its receptor and ACTH were detected by immunohistochemistry in the gastrointestinal tract and the neural tube of the amphibian urodele, Triturus cristatus carnifex, during development. These molecules were found after hatching of tadpoles, starting from stage 41. In the gastrointestinal tract, cells immunoreactive to leptin and its receptor were first revealed in the stomach, the liver and the gut and then in the pancreas. Both immunoreactives were colocalized in the same cells in some areas. Immunostaining for ACTH appeared at stages 43/45 in the stomach, the gut and the pancreas. In adjacent sections, a few cells immunoreactive to both ACTH and leptin receptor were detected. A few cells were immunoreactive to both insulin and leptin receptor. Immunoreactivities to leptin and its receptor were also found in adjacent sections of the neural tube, often colocalized in the same cell. Moreover, in prosencephalon, mesencephalon, rhomboencephalon and spinal cord, ACTH-immunoreactive cells were detected in the same areas as the leptin receptor immunoreactive cells. These results suggest the existence of a neuroendocrine network in newt tadpoles both at the central level, where it resembles that of mammals, and at the periphera...Continue Reading

Citations

Aug 24, 2010·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Chiara GambardellaSara Ferrando
Sep 20, 2007·Neuroendocrinology·Michael WilkinsonEhud Ur
Mar 10, 2006·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·Marina PaolucciRosalba Putti
Aug 4, 2021·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Amrita BakshiUmesh Rai

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