betadex and shikonin

betadex has been researched along with shikonin* in 2 studies

Other Studies

2 other study(ies) available for betadex and shikonin

ArticleYear
Study on the Antioxidant Effect of Shikonin-Loaded β-Cyclodextrin Forming Host-Guest Complexes That Prevent Skin from Photoaging.
    International journal of molecular sciences, 2023, Oct-14, Volume: 24, Issue:20

    When the skin is overexposed to ultraviolet rays, free radicals will accumulate in the skin, causing lipid damage and even inducing photoaging of the skin. Combination therapy with antioxidant drugs is a good choice for topical treatment of skin photoaging due to its special physiological structure. In this paper, shikonin was encapsulated in β-cyclodextrin (SH-β-CD) by the precipitation crystallization method, which delayed the release of the drug and increased drug solubility. The average diameter of SH-β-CD was 203.0 ± 21.27 nm with a zeta potential of -14.4 ± 0.5 mV. The encapsulation efficiency (EE%) was 65.9 ± 7.13%. The results of the in vitro permeation across the dialysis membrane and ex vivo transdermal release rates were 52.98 ± 1.21% and 88.25 ± 3.26%, respectively. In vitro antioxidant and antilipid peroxidation model assay revealed the antioxidant potential of SH and SH-β-CD. In the mice model of skin photoaging, SH and SH-β-CD had a recovery effect on the skin damage of mice, which could significantly increase the superoxide dismutase (SOD) activity in the skin. Briefly, SH-β-CD had an obvious therapeutic effect on the skin photoaging of mice caused by UV, and it is promising in skin disease treatment and skin care.

    Topics: Animals; Antioxidants; beta-Cyclodextrins; Mice; Renal Dialysis; Skin; Skin Aging; Skin Diseases; Ultraviolet Rays

2023
Encapsulation of isohexenylnaphthazarins in cyclodextrins.
    Biomedical chromatography : BMC, 2004, Volume: 18, Issue:4

    Naturally occurring isohexenylnaphthazarins (IHN), such as Alkannin, Shikonin (A/S) and their derivatives, are potent pharmaceutical substances with a wide spectrum of biological activity. In the present study, inclusion complexes of alkannin and shikonin commercial samples and IHN derivatives in the form of an oily extract of Alkanna tinctoria roots were formed with beta-cyclodextrin (CD) and beta-HPCD. These complexes were investigated to evaluate the effect of complexation on their aqueous solubility, decoloration, and also the percentage of polymeric A/S and IHN derivatives enclosed in the CDs cavity, since these decrease the active monomeric IHN. Both beta-CD and beta-HPCD increased the aqueous solubility of A/S and IHN derivatives and thus inclusion complexes can be used as drug delivery systems for A/S in both internal (capsules, tablets) and external hydrophilic pharmaceutical and cosmetic preparations (creams, gels, sprays) with enhanced bioavailability. The inclusion complexes formed had a pale purple colour, contributing to the partial decoloration of the A/S and thus of the fi nal pharmaceutical preparations. Finally, CDs selectively included more monomeric and less polymeric IHN, compared with the initial each time sample that is encapsulated; thus inclusion complexes may present enhanced biological activity.

    Topics: 2-Hydroxypropyl-beta-cyclodextrin; beta-Cyclodextrins; Biological Availability; Capsules; Chemistry, Pharmaceutical; Cyclodextrins; Dosage Forms; Drug Carriers; Microscopy, Electron; Naphthoquinones; Plant Extracts; Solubility

2004