OBJECTIVETo measure the male anterior hairline (AH) and provide data for hair transplantation.

METHODS205 males were randomly involved and divided into different age groups, as the young group( age 18-29), the middle-aged group (age 30-49) and the old group (age 50+). Their AH shape and height were measured. The data was then analyzed.

RESULTSAccording to the morphological classification of AH, the linear type was most common in the young and middle-aged groups (48.40% and 37.33%), the anterior protrusion type was most common in the old group (34.80%). The mean height of AH was 6.42 cm (5.00-8.50 cm)for the median line, and there was no statistical difference between groups (P > 0.05); the mean ratio of median line AH height to facial length was 0.30 (0.22-0.37), there were significant differences between the old group against the young, or the middle-aged group (P < 0.05), and no difference between the young group and the middle-aged group (P > 0.05); the mean height of AH was 5.83 cm (3.5-8.0 cm) for the paramedian line, and there was no statistical difference between groups (P > 0.05); the mean height of AH was 8.34 cm (5.5-10.5 cm) for the lateral line, there were significant differences between the young group against the middle-aged, or the old group (P < 0.05), and no difference between the middle-aged group and the old group (P > 0.05).

CONCLUSIONSThe shape and height of AH were age-associated. The linear type is most common in the young and middle-aged groups, the anterior protrusion type is most common in the old group. The change first occurs on the lateral lines since the age of 30, and the central portion is involved since the age of 50. The older the age gets, the higher the hairline is.

Adolescent ; Adult ; Aged ; Aging ; Face ; anatomy & histology ; Forehead ; anatomy & histology ; Hair ; anatomy & histology ; Humans ; Male ; Middle Aged ; Young Adult

OBJECTIVETo establish an in vitro culture model of single human hair follicle, and observe their morphological and histological changes.

METHODSHuman hair follicles were isolated from the volunteer patients. After dissecting follicles into single, follicles in growth phase were cultured in Williams E without any serum. This experiment included 3 groups: single follicle without sebaceous gland and other surrounding tissue (control group); single follicle with sebaceous gland and without the other surrounding tissue( experiment group A); single follicles with sebaceous gland and the other surrounding tissue (experiment group B). The survival rate, survival time, growth rate, multiplication capacity and apoptosis of cultured follicles and their morphological and histological changes were observed sequentially.

RESULTSThe hair follicles in experiment groups showed a better viability and a higher growth rate than those in control group. And the follicles in group B could keep growing for more than 25 days, which was longer than those in group A. Moreover, the sebaceous gland and the other surrounding tissue in group B showed great induction effect on follicle-cell proliferation and anti-apoptosis.

CONCLUSIONThe in vitro culture model of signal human hair follicles (single follicles including epidermis, sebaceous gland and the other surrounding tissue) had optimized internal environment which is similar to in vivo internal environment.

Culture Techniques ; Hair Follicle ; anatomy & histology ; cytology ; growth & development ; Humans ; In Vitro Techniques ; Sebaceous Glands ; Time Factors

Glabellar frown lines develop as a result of contraction of the corrugator supercilii muscles. These lines make look angry or aging. The neurotomy of facial nerve supplying corrugator supercilii muscle will prevent complications of the surgical technique and the reversibility of the nonsurgical technique. The regional anatomy of corrugator supercilii muscle is necessary for developing new technique. However, there is little information regarding the motor innervation of this muscle. The purpose of this study is to identify the regional anatomy of corrugator supercilii muscle and facial nerve and help to develop new technique of the neurotomy. We have dissected 6 Korean adult cadavers(12 sides). The motor innervation of this muscle was the temporal branch of facial nerve. The entry point of facial nerve into this muscle was found to be the inferolateral part. It was directly beneath the hair of lateral side of mid one-third of the eyebrow. The average distance between median plane and the entry point was 35.8mm. The measurement was not significantly different between right and left side. This study will be helpful for developing new technique of the neurotomy of motor nerve that supplies to corrugator supercilii muscle.
Adult ; Aging ; Anatomy, Regional* ; Equipment and Supplies ; Eyebrows ; Facial Nerve* ; Hair ; Humans ; Muscles

It was aimed to determine the normal hair scores of women of Kiri kkale region according to the Ferriman- Gallwey scale and to investigate the relationship between the hair shaft diameter and hair scores. Hair scores were calculated in 204 healthy women, and hair shaft diameters were measured from the hair samples collected from 60 patients. Body mass index, waist to hip ratio, insulin resistance and blood androgen levels were determined. Neutral, hormonal and total hair scores were 2.1+/-1.4, 3.1+/-2.7 and 5.2+/-3.6, respectively. The average total hair diameter and hormonal hair diameter were 191.93+/-90.49micrometer and 121.8+/-75.9micrometer respectively. The correlation between total hair diameter and total hair score was statistically significant (r=0.704 p< 0.001). Also, the correlation between hormonal hair diameter and hormonal hair score was statistically significant (r=0.724 p< 0.001). While hair scores and diameters show meaningful positive correlation with androgen levels, they show negative correlation with age. In our population, 95% value of total hair score was 11, and for the hormonal score, it was 9. Hair diameters increase with hair score, regardless of total or hormonal of hair scores. Hair scores and hair diameters may be affected by blood androgens in healthy women.
Acne Vulgaris/epidemiology ; Adult ; Female ; Hair/*anatomy & histology ; Hirsutism/*epidemiology/*pathology ; Human ; Incidence ; Middle Aged ; Prospective Studies ; Skin Pigmentation ; Turkey/epidemiology