Follow
Dewald Steyn
Dewald Steyn
Verified email at nwu.ac.za
Title
Cited by
Cited by
Year
The role of functional excipients in solid oral dosage forms to overcome poor drug dissolution and bioavailability
J Van der Merwe, J Steenekamp, D Steyn, J Hamman
Pharmaceutics 12 (5), 393, 2020
1322020
Drug bioavailability enhancing agents of natural origin (bioenhancers) that modulate drug membrane permeation and pre-systemic metabolism
B Peterson, M Weyers, JH Steenekamp, JD Steyn, C Gouws, JH Hamman
Pharmaceutics 11 (1), 33, 2019
902019
Herbal hepatotoxicity: current status, examples, and challenges
C Calitz, L Du Plessis, C Gouws, D Steyn, J Steenekamp, C Muller, ...
Expert opinion on drug metabolism & toxicology 11 (10), 1551-1565, 2015
582015
Absorption of the novel artemisinin derivatives artemisone and artemiside: potential application of Pheroid™ technology
JD Steyn, L Wiesner, LH Du Plessis, AF Grobler, PJ Smith, WC Chan, ...
International journal of pharmaceutics 414 (1-2), 260-266, 2011
482011
Combination therapy of Western drugs and herbal medicines: recent advances in understanding interactions involving metabolism and efflux
C Gouws, D Steyn, L Du Plessis, J Steenekamp, JH Hamman
Expert opinion on drug metabolism & toxicology 8 (8), 973-984, 2012
442012
Beneficial pharmacokinetic drug interactions: a tool to improve the bioavailability of poorly permeable drugs
W Gerber, JD Steyn, AF Kotzé, JH Hamman
Pharmaceutics 10 (3), 106, 2018
382018
Nasal delivery of recombinant human growth hormone: in vivo evaluation with Pheroid™ technology and N-trimethyl chitosan chloride
D Steyn, LH du Plessis, A Kotzé
Journal of Pharmacy & Pharmaceutical Sciences 13 (2), 263-273, 2010
342010
Excipient-drug pharmacokinetic interactions: Effect of disintegrants on efflux across excised pig intestinal tissues
W Gerber, JH Hamman, JD Steyn
Journal of food and drug analysis 26 (2), S115-S124, 2018
312018
Capsaicin and piperine as functional excipients for improved drug delivery across nasal epithelial models
W Gerber, D Steyn, A Kotzé, H Svitina, C Weldon, J Hamman
Planta medica 85 (13), 1114-1123, 2019
172019
In vitro oral drug permeation models: the importance of taking physiological and physico-chemical factors into consideration
R Joubert, JD Steyn, HJ Heystek, JH Steenekamp, JL Du Preez, ...
Expert opinion on drug delivery 14 (2), 179-187, 2017
172017
Impact of traditional African medicine on drug metabolism and transport
C Calitz, JH Steenekamp, JD Steyn, C Gouws, JM Viljoen, JH Hamman
Expert opinion on drug metabolism & toxicology 10 (7), 991-1003, 2014
152014
Drug bioavailability enhancing agents of natural origin (bioenhancers) that modulate drug membrane permeation and pre-systemic metabolism. Pharmaceutics 11
B Peterson, M Weyers, JH Steenekamp, JD Steyn, C Gouws, JH Hamman
Chapter, 2019
112019
Novel non-invasive protein and peptide drug delivery approaches
L Wallis, E Kleynhans, TD Toit, C Gouws, D Steyn, J Steenekamp, ...
Protein and Peptide Letters 21 (11), 1087-1101, 2014
112014
Comparison of RPMI 2650 cell layers and excised sheep nasal epithelial tissues in terms of nasal drug delivery and immunocytochemistry properties
W Gerber, H Svitina, D Steyn, B Peterson, A Kotzé, C Weldon, ...
Journal of Pharmacological and Toxicological Methods 113, 107131, 2022
102022
Evaluation of isolated fractions of Aloe vera gel materials on indinavir pharmacokinetics: In vitro and in vivo studies
L Wallis, M Malan, C Gouws, D Steyn, S Ellis, E Abay, L Wiesner, D P Otto, ...
Current Drug Delivery 13 (3), 471-480, 2016
102016
Development and evaluation of a double-phase multiple-unit dosage form for enhanced insulin intestinal delivery
S De Bruyn, C Willers, D Steyn, J Steenekamp, J Hamman
Drug Delivery Letters 8 (1), 52-60, 2018
92018
Evaluating in vitro cytotoxic effects of Artemisia afra and Artemisia annua infusions against selected lung cancer cell lines
S van Loggenberg, C Willers, F van der Kooy, C Gouws, JH Hamman, ...
South African Journal of Botany 150, 404-411, 2022
82022
The in vitro and in vivo effects of Hypoxis hemerocallidea on indinavir pharmacokinetics: modulation of efflux
K Havenga, E Abay, L Wiesner, A Viljoen, D Steyn, J Hamman
Planta Medica 84 (12/13), 895-901, 2018
72018
In vitro wound healing effects of combinations of Aloe vera gel with different extracts of Bulbine frutescens
A Hattingh, JP Laux, C Willers, J Hamman, D Steyn, H Hamman
South African Journal of Botany 158, 254-264, 2023
32023
Permeation enhancement effects of leaf materials from different aloe species on in vitro and ex vivo nasal epithelial models
W Gerber, D Steyn, A Kotzé, H Svitina, C Weldon, J Hamman
32020
The system can't perform the operation now. Try again later.
Articles 1–20