Martínez-Luna Eduwiges, Rodríguez-Lobato Erika, Vázquez-Velo Juan Antonio, Cuevas-González Juan Carlos, Martínez Velasco María Abril, Toussaint Caire Sonia
Dermatopathology Department, "Dr. Manuel Gea González" General Hospital, Mexico City, Mexico.
Dermatology and Dermato-Oncology Department, "Dr. Manuel Gea González" General Hospital, Mexico City, Mexico.
Skin Appendage Disord. 2018 Nov;5(1):27-31. doi: 10.1159/000488782. Epub 2018 May 22.
There are no reports of the density of hair follicles in the scalp of Mexican mestizo population, necessitating the determination of normal references values for this population compared with other ethnic groups.
To determine the average hair follicle count on the scalp in Mexican mestizo population.
A total of 50 scalp samples (25 men and 25 women) from Mexican mestizo individuals aged between 19 and 60 years, with no clinical evidence of hair disease, obtained by biopsy punch at General Hospital "Dr. Manuel Gea González" were collected over 2 years. The total follicular density, vellus and terminal hair follicles, and the percentage in anagen and catagen-telogen phase were measured. χ was used as the basic statistical test.
The mean number of total hair follicles in our Mexican mestizo population was 23.2 ± 4.2, which is lower compared with Thais, Iranians, and Caucasians. However, the ratio of terminal and vellus hair follicles was higher than in Thais, Caucasians, and African-Americans. The percentage of terminal hairs in anagen phase was lower than in the other populations, and higher in telogen, without exceeding 15%, established as the normal reference value. There was an association between sex and terminal hairs in telogen phase ( < 0.05). The average follicular density per mm was slightly higher compared with African-Americans and Asians. Women had more terminal hairs than men.
The density of total follicles is lower in the Mexican mestizo population compared with Iranians, Thais, and Caucasians. However, the greater number of terminal hairs compared to vellus hairs gives the appearance of greater overall volume. The results of this study can be used as a reference for diseases of the scalp in the Mexican population.
目前尚无关于墨西哥混血人群头皮毛囊密度的报道，因此有必要确定该人群与其他种族相比的正常参考值。
确定墨西哥混血人群头皮上的平均毛囊计数。
在两年时间里，从“曼努埃尔·吉亚·冈萨雷斯博士”综合医院通过活检打孔获取了50份头皮样本（25名男性和25名女性），这些样本来自年龄在19至60岁之间、无毛发疾病临床证据的墨西哥混血个体。测量了总毛囊密度、毳毛和终毛毛囊，以及生长期和退行期-休止期的百分比。使用χ作为基本统计检验。
我们的墨西哥混血人群中总毛囊的平均数量为23.2±4.2，与泰国人、伊朗人和高加索人相比更低。然而，终毛和毳毛毛囊的比例高于泰国人、高加索人和非裔美国人。生长期终毛的百分比低于其他人群，休止期则更高，但不超过设定为正常参考值的15%。在退行期终毛与性别之间存在关联（<0.05）。每毫米的平均毛囊密度与非裔美国人和亚洲人相比略高。女性的终毛比男性更多。
与伊朗人、泰国人和高加索人相比，墨西哥混血人群的总毛囊密度较低。然而，与毳毛相比终毛数量更多，使得整体外观上毛发量更大。本研究结果可作为墨西哥人群头皮疾病的参考。
