Capacitance change as molluscan neurons swell and shrink

Range ~0.7 µF/cm^2
Organism Great pond snail Lymnaea stagnalis
Reference Dai J, Sheetz MP, Wan X, Morris CE (1998) Membrane tension in swelling and shrinking molluscan neurons. J Neurosci 18: 6681–6692 p.6681 right column 2nd paragraphPubMed ID9712640
Comments "Here [researchers] use membrane tethers to estimate tension in osmotically perturbed molluscan neurons. As these neurons swell and shrink, capacitance changes (~0.7 µF/cm^2) roughly account for changing cell size (Wan et al., 1995). With shrinkage, membrane invaginates at the substratum, forming large (~1–10µm) VLDs [vacuole-like dilations] (Reuzeau et al., 1995) reswelling reverses them (Fig. 2). VLDs echo the membrane invaginations of regulatory volume decrease (Czekay et al., 1994) and the reversible vesicles of plant protoplasts undergoing osmocytosis (Wartenberg et al., 1992) and of shrinking muscle (Krolenko et al., 1995). VLD formation and reversal are Ca2+-insensitive (Herring et al., 1998)."
Entered by Uri M
ID 110848