Polymeric nanospheres for topical delivery of vitamin D3.
This study investigates the potential application of polymeric nanospheres (known as TyroSpheres) as a formulation carrier for topical delivery of cholecalciferol (i.e., Vitamin D3, VD3) with the goal to improve the skin delivery and stability of VD3. High drug loading and binding efficiencies were obtained for VD3 when loaded in TyroSpheres. VD3 was released from TyroSpheres in a sustained manner and was delivered across the stratum corneum, which occurred independent of the initial drug loading. An ex vivo skin distribution study showed that TyroSphere formulations delivered 3-10μg of active into the epidermis which was significantly higher than that delivered from Transcutol®(the control vehicle). In addition, an in vitro cytotoxicity assay using keratinocytes confirmed that VD3 encapsulation in the nanoparticles did not alter the drug activity. Photodegradation of VD3 followed zero-order kinetics. TyroSpheres were able to protect the active against hydrolysis and photodegradation, significantly enhancing the stability of VD3 in the topical formulation.
Ernest Mario School of Pharmacy, Rutgers-The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA; Center for Dermal Research, Rutgers-The State University of New Jersey, 145 Bevier Rd, Piscataway, NJ 08854, USA.
Tannaz
T
Ramezanli
Ernest Mario School of Pharmacy, Rutgers-The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA; The New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Rd, Piscataway, NJ 08854, USA.
Brian E
BE
Kilfoyle
The New Jersey Center for Biomaterials, Rutgers-The State University of New Jersey, 145 Bevier Rd, Piscataway, NJ 08854, USA; Mosaic Biosciences, 3415 Colorado Avenue, Boulder, CO 80309, USA.
Zheng
Z
Zhang
Ernest Mario School of Pharmacy, Rutgers-The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA; Center for Dermal Research, Rutgers-The State University of New Jersey, 145 Bevier Rd, Piscataway, NJ 08854, USA. Electronic address: Michniak@dls.rutgers.edu.
Bozena B
BB
Michniak-Kohn
D000279:Administration, Cutaneous; D002460:Cell Line; D002626:Chemistry, Pharmaceutical / Q000379:methods; D002762:Cholecalciferol / Q000008:administration & dosage* / Q000493:pharmacokinetics; D003692:Delayed-Action Preparations; D016503:Drug Delivery Systems; D065546:Drug Liberation; D004355:Drug Stability; D006801:Humans; D015603:Keratinocytes / Q000378:metabolism; D008297:Male; D054118:Nanospheres; D010782:Photolysis; D011108:Polymers / Q000737:chemistry*; D012867:Skin / Q000378:metabolism; D012869:Skin Absorption
D003692:Delayed-Action Preparations; D011108:Polymers; D002762:Cholecalciferol
Nanoparticles; Photostability; Skin permeation; TyroSpheres; Vitamin D3