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    Arzneimittelforschung. 1979;29(1):114-6.

    Absorption in rats, dogs, pigs, and humans of nicotinic acid after oral administration of phosphatidyl inositol pentanicotinate hydrochloride (PIN).

    Hertle H, Kiese M, Renner G.

    Abstract

    Bound nicotinic acid in feces after oral administration of phosphatidyl inositol pentanicotinate (PIN) was determined by chromatographical isolation from acid hydrolysate and UV absorbance of the eluted nicotinic acid. With all species tested, the absorption of nicotinic acid after administration of PIN was found to be incomplete, proportions from 5 to 25% of the amount of nicotinic acid administered with PIN being recovered from feces. Humans absorbed about 75% of the nicotinic acid administered with 700 mg PIN, i.e. 230 mg. It is concluded that the presence of bound nicotinic acid in feces is due to slow absorption of the PIN or slow hydrolysis of the nicotinic acid ester. Rabbit liver homogenate, human blood plasma, and human duodenal juice were found to liberate nicotinic acid from PIN.

    PMID:
    582105
    [PubMed - indexed for MEDLINE]

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