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Gas-propelled anti-hair follicle aging microneedle patch for the treatment of androgenetic alopecia.
J Control Release
January 2025
State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Basic Research Center of Excellence for Natural Bioactive Molecules and Discovery of Innovative Drugs, College of Pharmacy, Jinan University, Guangzhou 511436, China. Electronic address:
Existing treatments for androgenetic alopecia (AGA) are unsatisfactory, owing to the two major reasons: (1) Oxidative stress and vascularization deficiency in the perifollicular microenvironment provoke the premature senescence of hair follicles, limiting the transformation of hair growth cycle from the telogen to the anagen phase; (2) The amount of drug delivered to the perifollicular region located in the deep dermis is very limited for passive drug delivery systems. Herein, we developed a gas-propelled microneedle patch integrated with ferrum-chelated puerarin/quercetin nanoparticles (PQFN) to increase drug accumulation in hair follicles and reshape the perifollicular microenvironment for improved hair-regenerating effects. PQFN can rejuvenate testosterone (Tes)-induced senescence of dermal papilla cells by scavenging ROS, restoring mitochondrial function, regulating signaling pathways related to hair regeneration, and upregulating hair growth-promoting genes.
View Article and Find Full Text PDFNanoparticle Adjuvants Incorporating Haptens Drive Potent Immune Tolerance to Accelerate Hair Regrowth.
ACS Appl Mater Interfaces
January 2025
Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China.
Alopecia areata (AA) is a prevalent autoimmune condition that causes sudden hair loss and poses significant psychological challenges to affected individuals. Current treatments, including corticosteroids and Janus kinase inhibitors, fail to provide long-term efficacy due to adverse effects and relapse after cessation. This study introduces a nanoparticle (NP) system that codeliver diphenylcyclopropenone (DPCP) and rapamycin (RAPA) prodrugs to induce immune tolerance and promote hair regeneration.
View Article and Find Full Text PDFAdvances in Topical Therapies for Clinically Relevant and Prevalent Forms of Alopecia.
Life (Basel)
December 2024
Department of Dermatology, The Johns Hopkins Hospital, Baltimore, MD 21287, USA.
Alopecia encompasses diverse conditions that vary by etiology, progression, and clinical presentation, including androgenetic alopecia, alopecia areata, telogen effluvium, and scarring alopecias such as lichen planopilaris and central centrifugal cicatricial alopecia. Managing these conditions requires tailored therapeutic approaches, with topical treatments emerging as effective first-line interventions. This literature review examines topical therapies across alopecia types, assessing mechanisms of action, clinical efficacy, and safety profiles to guide evidence-based clinical practice.
View Article and Find Full Text PDFResveratrol-Loaded Versatile Nanovesicle for Alopecia Therapy via Comprehensive Strategies.
Int J Nanomedicine
December 2024
School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, Guangdong Province, People's Republic of China.
Introduction: Alopecia is a systemic disease with multiple contributing factors. Effective treatment is challenging when only hair growth mechanisms are targeted while ignoring the role of maintaining hair follicle microenvironment homeostasis, which is crucial for cell growth and angiogenesis. Oxidative stress and inflammation are major disruptors of this microenvironment, leading to inhibited cell proliferation and compromised hair follicle circulation.
View Article and Find Full Text PDFIntroduction: Hair loss can happen for various reasons, including emotional stress, physical strain, certain medical issues, and nutritional gaps. When it comes to nutrition, a lack of vitamin D3 could be linked to diffuse hair loss.
Objectives: The aim was to look for the frequency of vitamin D3 deficiency with diffuse hair fall, especially in the Pakistani population.
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