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Updated: Jul 3, 2025
A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
Published on: March 9, 2015
Nanocrystal Structure of Minoxidil: A Safe Stimulator for Hair Growth Factor for C57BL/6 Mice
Ali Moradi1, Seyed Morteza Seifati1, Majid Darroudi2
1Department of Biology, Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran.
Background:
Commercial Minoxidil (MXD) is commonly used as a vasodilator agent of hair follicles for providing direct dermal papilla cell proliferation and consequently enhancing the rate of hair growth.
Objective:
The current study attempted to improve the bioactivity and water solubility of MXD by producing nanocrystal structures and investigating the obtained hair growthstimulating activity on C57BL/6 mice.
Methods:
The MXD nanoparticles (MXD-NPs) were prepared through a bead mill and ultrasonic process and characterized by DLS, XRD, UV-Vis, FTIR, FESEM, TEM, and Zeta-potential techniques.
Results:
The cytotoxicity of MXD-NPs was studied on human dermal fibroblast (HDF) by MTT assay. Lastly, we analyzed the comparative hair growth inductive activity of certain MXD-NPs concentrations on C57BL/6 mice. The stabled MXD-NPs (-46 mV, 21.9 nm) caused a significant increase in the hair growth rate of C57BL/6 mice by running a safe site-specific delivery mechanism on the targeted pilosebaceous follicles when compared to MXD.
Conclusion:
The MXD-NPs-receiving mice exhibited a greater rate of anagen/telogen follicular when compared with MXD-treated types, which verified the improvement of their hair re-growing and follicular-stimulative activities. Therefore, these outcomes confirmed the potential of MXD-NPs for substituting its commercial solution format as a safe and efficient iso-formulation structure.
