Quick Search:

uzh logo
Browse by:

Zurich Open Repository and Archive

Maintenance: Tuesday, 5.7.2016, 07:00-08:00

Maintenance work on ZORA and JDB on Tuesday, 5th July, 07h00-08h00. During this time there will be a brief unavailability for about 1 hour. Please be patient.

Horber, D H; Ottiger, C; Schott, H; Schwendener, R (1995). Pharmacokinetic properties and interactions with blood components of N4-hexadecyl-1-beta-D-arabinofuranosylcytosine (NHAC) incorporated into liposomes. Journal of Pharmacy and Pharmacology, 47(4):282-288.

Full text not available from this repository.

View at publisher


N4-Hexadecyl-1-beta-D-arabinofuranosylcytosine (NHAC) is a new lipophilic derivative of 1-beta-D-arabinofuranosylcytosine (ara-C) with strong antitumour activity. The interactions of NHAC incorporated into small unilamellar liposomes of different compositions with blood components were evaluated. In comparison with ara-C, NHAC is highly protected against deamination to inactive arabinofuranosyluracil (ara-U) in human plasma, resulting in only 2% conversion into ara-U after 4 h incubation at 37 degrees C, whereas from ara-C more than 80% was deaminated. In in-vitro incubations with human blood, it was found that NHAC was transferred from the liposomes at about 47% efficiency to plasma proteins, particularly to albumin and to the high and low density lipoproteins. The remaining part of NHAC was bound to erythrocytes (50%) and to leucocytes (3%). The addition of poly(ethylene) glycol-modified phospholipids to the liposomes (PEG liposomes), which were composed of soy phosphatidylcholine and cholesterol (plain liposomes), did not significantly prevent the fast transfer of NHAC from the liposomes to the blood components. Pharmacokinetic studies in mice revealed that NHAC had biphasic kinetics in blood with a t1/2 alpha of 16 min and a t1/2 beta of 3.8 h when the drug was formulated in plain liposomes and a t1/2 alpha of 15 min and a t1/2 beta of 9.67 h in PEG liposomes, respectively. NHAC was predominantly distributed in the liver with 29% of the injected dose found after 30 min.


14 citations in Web of Science®
14 citations in Scopus®
Google Scholar™


Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Molecular Cancer Research
07 Faculty of Science > Institute of Molecular Cancer Research
Dewey Decimal Classification:570 Life sciences; biology
Deposited On:20 Oct 2009 13:18
Last Modified:05 Apr 2016 13:30
Publisher:Pharmaceutical Press
Publisher DOI:10.1111/j.2042-7158.1995.tb05796.x
PubMed ID:7791024

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page