OXYTOCIC ACTIVITY IN THE NEURAL COMPLEX OF TWO ASCIDIANS,CHELYOSOMA PRODUCTUM AND PYURA HAUSTOR1
- 1 September 1959
- journal article
- research article
- Published by The Endocrine Society in Endocrinology
- Vol. 65 (3) , 520-523
- https://doi.org/10.1210/endo-65-3-520
Abstract
Weak oxytocic activity can be extracted from the neural complexes of two solitary ascidians, Chelyosoma productum and Pvura haustor. This activity does not resemble neurohypophysial oxytocin pharmacologically or chemically. It can also be found in tissues other than the neural complex. Pyura extracts exert a weak antidiuretic effect but Chelyosoma extracts do not. The similarity of ascidian neural complex activities to those of the vertebrate neurohypophysis are considered too superficial to support the argument for homology of these organs.This publication has 3 references indexed in Scilit:
- THE OCCURRENCE OF A WATERBALANCE-, A MELANOPHORE-EXPANDING AND AN OXYTOCIC PRINCIPLE IN THE PITUITARY GLAND OF THE RIVER-LAMPREY (LAMPETRA FLUVIATILIS L.)Acta Endocrinologica, 1954
- A method for the assay of very small amounts of antidiuretic activity with a note on the antidiuretic titre of rats' bloodThe Journal of Physiology, 1953
- The pituitary in the ascidians (Molgula manhattensis)Journal of Experimental Zoology, 1930