Cedrol From Platycladus Orientalis Regulates M1/M2 Polarization of Macrophages and Promotes Hair Regeneration

In this experimental study, the researchers observed that Platycladus orientalis leaf extract promoted hair growth by enhancing dermal papilla cell proliferation and increasing growth factor expression, particularly through ACK1 activation and modulation of Wnt/β-catenin signaling pathways in cultured human cells and a 12-week topical application.

This study found that oral administration of cedrol, a component of ginger, improved hair regeneration and reduced hair follicle damage in cyclophosphamide-induced alopecia areata in mice more effectively than external administration, by enhancing cytokine expression and modulating key signaling pathways.

JAK inhibitors and platelet-rich plasma show promise for treating alopecia areata.

This case report discusses a successful treatment of Alopecia Areata with tofacitinib and includes a literature review on the condition's pathophysiology and the mechanism of JAK inhibitors, though it notes the high failure rate of available treatments and absence of FDA-approved options.

This study reports that hair follicle-derived mesenchymal stem cells significantly reduced hair loss and inflammation in alopecia areata models, suggesting a potential therapeutic approach.

In this research letter from the British Journal of Dermatology, the authors explore the use of topical tofacitinib to treat alopecia areata affecting facial hair, but specific results are not reported in the abstract.

This study found that Cacumen Platycladi volatile oil promotes dermal papilla cell proliferation and enhances hair growth in mice, outperforming minoxidil and showing no obvious cytotoxic effects.

Cedrol cream is more effective and safe for promoting hair growth than traditional treatments.

This review explores multidisciplinary advances in understanding alopecia areata, including epidemiology, pathogenesis, and innovative treatments, but reports no new research results.

In this animal study, cedrol treatment reduced chemotherapy-induced alopecia in mice by preventing hair follicle damage, while minoxidil did not prevent alopecia under similar conditions.

In this animal study, researchers found that cedrol, a constituent from Platycladus orientalis, significantly promoted hair growth in a dose-dependent manner in female C57BL/6 mice, surpassing results from blank control and 2% minoxidil groups over 21 days.

This study identified key genetic regions associated with alopecia areata, highlighting both acquired and innate immune involvement, with a novel link to the upregulation of ULBP ligands in autoimmune disease.