Fabrication and functional attributes of nanotherapeutically engineered system for co-administration of adapalene and lycopene for enhanced acne management: an in vitro and in vivo investigation

Abstract

Abstract Background Acne vulgaris is caused due to several different biological, environmental and specific pathological factors, resulting in secretion of unregulated amount of sebum by the sebaceous glands. Acne is thought to be a minor, self-restraint, puberty leading and hormone-induced cosmetic disorder. It significantly affects the quality of life leading to social disengagement, anxiety, depression, necessitating its therapeutic management in due course of time. Thus, despite not being fatal it has social and mental impact on individual’s life. Pathogenesis of acne is complex and multifactorial involving diverse physiological, environmental factors and significant role of propionibacterium acne. Retinoids have been used as preferred first-line therapy for treatment of acne, but they have many limitations. Adapalene has found to be acting synergistically with other drugs like benzoyl peroxide, salicylic acid, clindamycin, etc., and various other topical antioxidants. Results The study investigates the formulation and characterization of novel nanostructured lipid vesicles (NLVs) co-loaded with adapalene and lycopene, through topical gel. The high-pressure homogenization method was used to prepare nanostructured lipid vesicles followed by incorporation into hydrophilic gel vehicle. This novel system was scientifically tested for various evaluation parameters like size and vesicle size distribution, polydispersity index, drug entrapment efficiency and in vitro drug release characteristics, along with rheological behavior of formulation gel. Skin permeation and biodistribution characteristics through skin were also evaluated, and better localization of drug in dermis and reduced systemic penetration were the key observation in prepared formulation. Conclusion The simultaneous co-administration of lycopene resulted in an additive effect in therapeutic management of acne. It can be predicted that this novel NLVs-based gel along with synergistic effect of lycopene will definitely result in better therapeutic efficacy and reduced systemic adverse effects of adapalene. This combination can be explored as future alternative for acne therapy.