A proposed noise mechanism in nerve cell membranes

1974 ◽  
Vol 45 (2) ◽  
pp. 405-409 ◽  
Author(s):  
Ingemar Lundström ◽  
Douglas McQueen
Keyword(s):  
Nerve Cell ◽  
Cell Membranes

Ethanol: Novel Actions on Nerve Cell Physiology Explain Impaired Functions

Physiology ◽  
1998 ◽  
Vol 13 (4) ◽  
pp. 164-170 ◽  
Author(s):  
Esa R. Korpi ◽  
Riikka Mäkelä ◽  
Mikko Uusi-Oukari
Keyword(s):  
Nerve Cell ◽  
Cell Membranes ◽  
Cell Physiology ◽  
Inhibitory Neurotransmitters ◽  
Receptor Proteins ◽  
Physiological Processes ◽  
Firm Basis

Molecular biological tools have revealed receptor proteins for excitatory and inhibitory neurotransmitters on cell membranes as targets of ethanol action. Behavioral and pharmacogenetic assays using rodent lines have supported this neurotransmitter theory of ethanol action and given a firm basis for future identification of the relevant genes and the central physiological processes vulnerable to ethanol.

Disturbed Ion Gradients in Brain Anoxia

Physiology ◽  
1987 ◽  
Vol 2 (2) ◽  
pp. 54-57 ◽  
Author(s):  
AJ Hansen
Keyword(s):  
Blood Flow ◽  
Sodium Chloride ◽  
Synaptic Transmission ◽  
Nerve Cell ◽  
Nerve Conduction ◽  
Brain Function ◽  
Cell Membranes ◽  
Interstitial Fluid ◽  
Potassium Conductance ◽  
Ion Gradients

Anoxia profundly affects brain function. If the blood flow is interrupted for a few minutes, the interstitial fluid shows a dramatic increase of potassium and lowering of sodium, chloride, and calcium concentrations, which lead to arrest of nerve conduction and synaptic transmission. These changes, however, cannot explain that consciousness is lost within seconds. This may be caused by activation of potassium conductance in nerve cell membranes.

Electrochromic behaviour of carotenoid molecules in nerve cell membranes: A resonance Raman study

1993 ◽  
Vol 18 (2-3) ◽  
pp. 127-130 ◽  
Author(s):  
Vladimir Z. Paschenko ◽  
Alexander O. Vershinin ◽  
Anatoly A. Churin
Keyword(s):  
Nerve Cell ◽  
Cell Membranes ◽  
Resonance Raman ◽  
Raman Study

Photoreceptor disk membrane substructures by means of the complementary freeze-fracture-replica methods

1978 ◽  
Vol 36 (2) ◽  
pp. 156-157
Author(s):  
A. Tonosaki ◽  
M. Yamasaki ◽  
H. Washioka ◽  
J. Mizoguchi
Keyword(s):  
Cell Membranes ◽  
Freeze Fracture ◽  
Purple Membrane ◽  
Remarkable Case ◽  
Single Face ◽  
Disk Membrane ◽  
Associated Proteins ◽  
Photoreceptor Membranes

A vertebrate disk membrane is composed of 40 % lipids and 60 % proteins. Its fracture faces have been classed into the plasmic (PF) and exoplasmic faces (EF), complementary with each other, like those of most other types of cell membranes. The hypothesis assuming the PF particles as representing membrane-associated proteins has been challenged by serious questions if they in fact emerge from the crystalline formation or decoration effects during freezing and shadowing processes. This problem seems to be yet unanswered, despite the remarkable case of the purple membrane of Halobacterium, partly because most observations have been made on the replicas from a single face of specimen, and partly because, in the case of photoreceptor membranes, the conformation of a rhodopsin and its relatives remains yet uncertain. The former defect seems to be partially fulfilled with complementary replica methods.

Sign in / Sign up

Export Citation Format

Share Document