Molecular Sieving of Hydrophilic Molecules by the Rectal Intima of the Desert Locust (Schistocerca gregaria)*
Open Access
- 1 June 1968
- journal article
- Published by The Company of Biologists in Journal of Experimental Biology
- Vol. 48 (3), 521-532
- https://doi.org/10.1242/jeb.48.3.521
Abstract
The permeability of perfused intimal sacs to fourteen non-ionic, hydrophilic molecules of graded molecular size was estimated by radioisotope flux. The rectal cuticle acts as a molecular sieve severely restricting the rate of penetration of molecules with increasing hydrated size. The penetration of test molecules was as predicted by the Renkin equation for a uniform population of water-filled pores having radii of 6.5 Å. The properties of cuticles from the rectum and the integument are compared and the role of the rectal intima in the excretory process in the desert locust is discussed.This publication has 32 references indexed in Scilit:
- A COAT OF REPEATING SUBUNITS ON THE CYTOPLASMIC SURFACE OF THE PLASMA MEMBRANE IN THE RECTAL PAPILLAE OF THE BLOWFLY, CALLIPHORA ERYTHROCEPHALA (MEIG.), STUDIED IN SITU BY ELECTRON MICROSCOPYThe Journal of cell biology, 1966
- Permeability of Insect Cuticle to Water and LipidsScience, 1965
- THE WATER RELATIONS OF INSECT CUTICLEBiological Reviews, 1961
- Electrical Properties of Orientated Lipid on a Biological Membrane : An Electrostatic Diffusion Barrier and Ion PumpNature, 1961
- Osmotic Flow of Water across Permeable Cellulose MembranesThe Journal of general physiology, 1960
- THE ENTRANCE OF WATER INTO BEEF AND DOG RED CELLSThe Journal of general physiology, 1958
- THE RATE OF EXCHANGE OF TRITIATED WATER ACROSS THE HUMAN RED CELL MEMBRANEThe Journal of general physiology, 1957
- Studies on arthropod cuticle. X. The asymmetrical penetration of waterJournal of Cellular and Comparative Physiology, 1953
- Self-diffusion and Structure of Liquid Water. II. Measurement of Self-diffusion of Liquid Water with O18 as TracerJournal of the American Chemical Society, 1951
- The particle size of acid dyes and their diffusibility into living cellsJournal of Cellular and Comparative Physiology, 1941