目的：评估血细胞分离机单采制备自体富血小板血浆（PRP）治疗雄激素性脱发（AGA）的疗效及安全性。方法：纳入31例AGA患者，采用单采技术制备血小板浓度803~1669×10?/L的自体PRP，激活后行头皮注射治疗3次（间隔1个月）。于基线（T1）及每次治疗后1、2、3个月（T2~T4）评估毛发密度与不良反应。结果：患者均为男性。毛发密度由T1的（111.77±12.00）根/cm2升至T4的（133.74±16.34）根/cm2（均P＜0.001）。医师评估有效率80.6%，患者满意率74.2%。主要不良反应为注射部位出血、肿痛及灼热感，均自行缓解；1例出现额部及眼睑明显水肿，5 d后消退。结论：单采自体PRP治疗AGA疗效确切且安全。规范控制PRP制备质量及血小板浓度有助于优化疗效。

Objective: To evaluate the clinical efficacy and safety of autologous platelet-rich plasma (PRP) prepared via apheresis using a blood cell separator for the treatment of androgenetic alopecia (AGA). Methods: A total of 31 patients with AGA who completed the study were enrolled. Autologous PRP with a platelet concentration of 803-1669×10?/L was prepared using apheresis technology. After activation, the PRP was administered via intralesional scalp injections for a total of 3 sessions at 1-month intervals. Hair density changes and adverse reactions were evaluated at baseline (T1) and at 1, 2, and 3 months after the initial treatment (T2-T4). Results: All included patients were male. Hair density significantly increased from (111.77±12.00) hairs/cm2 at baseline to (133.74±16.34) hairs/cm2 at T4 (all P<0.001). The clinician-evaluated effective rate was 80.6%, and the patient satisfaction rate was 74.2%. The primary adverse reactions included hemorrhage, swelling, burning sensation, and transient pain at the injection site, all of which resolved spontaneously. Notably, 1 patient developed marked edema in the forehead and eyelids, which subsided spontaneously after approximately 5 days. Conclusion: Autologous PRP prepared via apheresis is effective and safe for the treatment of AGA. Standardized quality control of PRP preparation and platelet concentration may contribute to further optimizing the therapeutic outcomes.

雄激素性脱发是一种人群中常见的损容性疾病,其发病与多种因素有关,而遗传因素在发病率中具较大的影响。低能量激光疗法(Low-Level Laser Therapy)是近年来用于治疗雄激素性脱发的光疗技术。低能量激光是一种低能量,短波长的激光,因早期研究发现其具有促进毛发生长的作用而被用于研究治疗雄激素性脱发(AGA)。在低功率激光疗法中,通过使用低能量激光照射毛囊,使毛囊炎性反应得以减轻,同时促进细胞新陈代谢,从而使休止期毛囊复苏,达到促进毛发生长的作用。本文通过对低能量激光疗法治疗雄激素性脱发的机制及效果进行论述,并讨论局部治疗、系统治疗等其他方法联合低功率激光在AGA治疗中的研究进展。

Androgenetic alopecia is a common and ashamed disease in the human population. Its incidence is related to a variety of factors, and the gene have a greater impact on the incidence. Low-level laser therapy LLLT is a phototherapy technique for the treatment of androgenetic alopecia in recent years. Low-level laser means low-energy, short-wave length that have been used for research and treatment of androgenetic alopecia because of the early discovery which is promoting hair growth. In LLLT, the laser irradiates hair follicles, so that reduces the folliculitis, while promoting cell metabolism.From this, the dormant hair follicles resume growth. This article discusses the mechanism and effect of low-level laser therapy for the treatment of androgenetic alopecia, and further discusses the advancement of topical treatment, systemic treatment, and other methods which combined with low-level laser in the treatment of AGA.