Extraction of polyphosphoinositides with neutral and acidified solvents A comparison of guinea-pig brain and liver, and measurements of rat liver inositol compounds which are resistant to extraction

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Colleges, School and Institutes

External organisations

  • Department of Biochemistry
  • Department of Biological Chemistry
  • Harvard Medical School
  • University of Birmingham


Di- and triphosphoinositides were quantitatively extracted from guinea-pig brain with a mixture of chloroform, methanol and 2 M KCl. The extracts were almost colourless and were not severely contaminated with chloroform-insoluble material or inorganic phosphate. The same technique did not extract polyphosphoinositides from guinea-pig liver or from several other tissues. Analysis of the residue remaining after extraction of lipids from rat liver and of phosphate ester fractions obtained from this tissue by acid hydrolysis showed only low concentrations of inositol attributable to inositol di- and triphosphates. This observation is not consistent with a previous report of relatively high concentrations of these esters in rat liver.


Original languageEnglish
Pages (from-to)86-91
Number of pages6
JournalBBA - Lipids and Lipid Metabolism
Issue number1
Publication statusPublished - 9 Jun 1970

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