Oral application of insulin encapsulated liposomes

Das, N. ; Basu, M. K. ; Das, M. K. (1988) Oral application of insulin encapsulated liposomes Biochemistry International, 16 (6). pp. 983-989. ISSN 0158-5231

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125Iodine labelled insulin encapsulated liposomes were introduced orally to rats. After different intervals of feeding, blood from the portal vein and heart was collected. The plasma was passed through a Sepharose 2B column to establish the presence of liposomes or intact hormone. Liposomal and hormonal fractions from the column loaded with plasma from the portal vain contained radioactivity. It was found that approx. 60% of the loaded radioactivity was associated with the liposomes whereas 20% of the loaded count was found with the hormonal fractions. It is noted that undegraded protein is not detected in portal plasma from rats fed with free insulin. When plasma from the heart of rats fed with liposomal insulin was passed through Sepharose 2B column, neither liposomes nor insulin was detected.

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