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Pharmacokinetic evaluation of D-ribose after oral and intravenous administration to healthy rabbits

Authors Alzoubi KH, Ismail ZB, AL-Essa MK, Alshogran OY, Abutayeh RF, Abu-Baker N

Received 3 March 2018

Accepted for publication 12 April 2018

Published 12 June 2018 Volume 2018:10 Pages 73—78


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Professor Arthur Frankel

Karem H Alzoubi,1 Zuhair Bani Ismail,2 Mohamed K AL-Essa,3 Osama Y Alshogran,1 Reem F Abutayeh,4 Nareman Abu-Baker5

1Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan; 2Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Irbid, Jordan; 3Department of Physiology, Faculty of Medicine, University of Jordan, Amman, Jordan; 4Department of Medicinal Chemistry and Phytochemistry, Applied Science Private University, Amman, Jordan; 5Philadelphia Biomedical Products Development Center, Amman, Jordan

Introduction: This study explored d-ribose pharmacokinetics after intravenous (IV) and oral administration to healthy rabbits.
Materials and methods: D-ribose was administered once as 420 mg/kg (N=4) or 840 mg/kg (N=6) dose intravenously, or as an oral dose of 420 mg/kg (N=3) or 840 mg/kg (N=3). Serum was obtained at various time points, up to 210 minutes after administration. Urine was also collected after IV administration. Pharmacokinetic parameters were determined from drug concentration–time data using Kinetica software.
Results: The findings showed that D-ribose follows a dose-dependent kinetic profile. With doubling the IV dose, AUCtotal was significantly increased by threefold, while the clearance was decreased by 44%. The half-life was 1.7-fold longer at the higher dose. Similar nonsignificant trends were also observed at oral administration. D-ribose was rapidly absorbed (Tmax=36–44 minutes) and rapidly disappeared from plasma (within <140 minutes). Additionally, D-ribose was partially (18–37.5%) recovered from urine.
Conclusion: Collectively, D-ribose showed a dose-dependent kinetic profile, where parameters change according to dosing levels. D-ribose clearance seems to follow first-order kinetics at low dose. Thereafter, elimination systems are saturated, and elimination continues in a fast manner. Urine recovery was partial, which could be attributed to the several metabolic pathways that pentose can undergo.

Keywords: D-ribose, single dose, pharmacokinetics, rabbits, oral, intravenous

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