Comprehensive treatment of ear keloid: A case report.

Rationale: Ear keloid is one of the more common forms of keloid, which may cause pain and itching, and is aesthetically unappealing. Recurrence is common with any monotherapy which prompted a comprehensive, multidimensional approach.

Patient Concerns: A 24-year-old female was evaluated in our department on April 6, 2021, due to an "8-year recurrence following a left ear keloid resection.

Induction of hair follicle regeneration in rat ear by microencapsulated human hair dermal papilla cells.

Objective: To induce hair follicle regeneration in rat ear by microencapsulated dermal papillae (DP) cells.

Methods: Intact dermal papillae were obtained from human scalp follicles which were digested with collagenase I. The human hair DP cells were encapsulated with alginate-polylysine-alginate (APA) by a high-voltage electric field droplet generator.

Microencapsulated human hair dermal papilla cells: a substitute for dermal papilla?

Dermal papillae (DP) play a pivotal role in hair formation, growth and cycling. However, the number of DP is limited. In this study, we report the production of "reconstructed DP" by enclosing DP cells within an alginate-polylysine-alginate (APA) semipermeable membrane.

[Induction of hair follicle regeneration in mice ear by microencapsulated human hair dermal papilla cells].

Objective: To induce the hair follicle regeneration in mice ear by microencapsulated dermal papillae cells (DPs) and to investigate the permeability of fluorescein in APA microencapsulation to search the ideal diameter of microencapsulation.

Methods: The DPs were encapsulated with alginate-polylysine-alginate by a high-voltage electric field droplet generator. The microencapsulated dermal papilla cells were xenotransplanted into the mice ears.