title: Evidence for amino acid concentration gradients between CSF and extracellular fluid.
abstract: A small volume in the extracellular space of the medulla in the anesthetized cat was perfused with cisternal cerebrospinal fluid (CSF) using a push-pull technique. The recovered perfusate was a mixture of pushed CSF and the extracellular fluid. HPLC-EC analysis showed that the concentration of some primary amino acids in recovered perfusate often differed from their concentrations in CSF. These results suggested that amino acid gradients existed between CSF and the extracellular space.
authors: Department of Physiology and Biophysics, Wright State University, Dayton, OH 45401-0927.
authors: V R
authors: VR
authors: Roettger
authors: M D
authors: MD
authors: Goldfinger
mesh_terms: D000596:Amino Acids / Q000134:cerebrospinal fluid* / Q000378:metabolism*; D000818:Animals; D002415:Cats; D002851:Chromatography, High Pressure Liquid; D004563:Electrochemistry / Q000379:methods; D005110:Extracellular Space / Q000378:metabolism*; D009994:Osmolar Concentration; D013116:Spinal Cord / Q000378:metabolism*
chemical_list: D000596:Amino Acids