The lungs of Polypterus senegalus and Erpetoichthys calabaricus: Insights into the structure and functional distribution of the pulmonary epithelial cells

Journal of Morphology
J M IcardoGiacomo Zaccone

Abstract

The present article is a comparative, structural study of the lung of Polypterus senegalus and Erpetoichthys calabaricus, two species representative of the two genera that constitute the Polypteriformes. The lung of the two species is an asymmetric, bi-lobed organ that arises from a slit-like opening in the ventral side of the pharynx. The wall is organized into layers, being thicker in P. senegalus. The inner epithelium contains ciliated and non-ciliated bands. The latter constitute the respiratory surface and are wider in E. calabaricus. The air-blood barrier is thin and uniform in P. senegalus and thicker and irregular in E. calabaricus. In the two species, the ciliated areas contain ciliated cells, mucous cells and cells with lamellar bodies. Additionally, P. senegalus contains polymorphous granular cells (PGCs) and neuroendocrine cells (NECs) while E. calabaricus lacks PGCs but shows granular leukocytes and a different type of NEC. Interestingly, ciliated cells and secretory cells show a dual morphology in E. calabaricus indicating the presence of cellular subtypes and suggesting more complex secretory activity. Also in E. calabaricus, cilia show a novel doublet-membrane interaction that may control the displacement of the...Continue Reading

References

Apr 30, 1979·Cell and Tissue Research·S M Morris, J T Albright
Nov 30, 1977·Cell and Tissue Research·S M Morris, J T Albright
Nov 1, 1988·Journal of Applied Physiology·A PettenazzoM Ikegami
Jan 1, 1974·Cell and Tissue Research·E MarquetR Schwarz
Apr 1, 1969·Archives of Environmental Health·K H Kilburn
Aug 1, 1995·American Journal of Respiratory Cell and Molecular Biology·S Orgeig, C B Daniels
May 23, 2001·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·S F PerryJ E Remmers
May 23, 2001·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·H P Haagsman, R V Diemel
Jun 16, 2005·Physiological and Biochemical Zoology : PBZ·Marcos F P G de MoraesSteven F Perry
Mar 1, 2006·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·Giacomo ZacconeSalvatore Fasulo
Aug 28, 2007·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Giacomo ZacconeSalvatore Fasulo
Dec 22, 1989·Science·E L BrainerdC T Samper
Jan 6, 2009·Acta histochemica·Giacomo ZacconeSalvatore Fasulo
Jul 7, 2011·Biology of the Cell·Cathy Fisch, Pascale Dupuis-Williams
Jun 26, 2012·Respiratory Physiology & Neurobiology·Cosima S PorteusWilliam K Milsom
Feb 5, 2013·Journal of Morphology·Sarah LongoAmy R McCune
Oct 9, 2013·Fish & Shellfish Immunology·Daniela GomezIrene Salinas
Aug 19, 2014·Journal of Morphology·José M IcardoGiacomo Zaccone
Aug 1, 1989·Journal of Morphology·A LechleuthnerU Welsch

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