임덕우,
이무형 Annal of Dermatol 2002년 14권 2호
71 ~ 76
Background:
Skin color is determined by many factors including
melanin and nonmelanin pigments like hemoglobin
and extraneous chemicals. Various factors such as
race, sex, and age have been reported to have an
inf luence on skin color.
Methods:
Measurement of malanin index (M-index) was made
by reflectance spectrophotometer at three different
sites including forehead, abdomen and forearm in
total 800 healthy subjects consisting of 100 males
and 100 females of neonates (three days after birth)
and children (male:8.08 0.80, total:8.06 0.82 years
of age), adolescence (male:13.89 0.76, female: 13.96
0.79, total: 13.93 0.78 years of age), and adults(male:24.26
0.82, female:24.40 0.89, total:24.33 0.86 years
of age). We also investigated the change of M-index
by each skin phototype of college students determined
by Fitzpatrick classification.
Results:
From the birth to the puberty, sex difference of
melanin index was generally not noted, but adult
females showed lower levels of melanin index in
all sites measured. M-index increased from birth
to adolescence, and decreased after adulthood. Forehead
showed highest melanin index compared with other
sites. Increased of M-index was noted as skin phototype
goes from ⅢtoⅤ.
Conclusions:
Factors including sex, age, body sites and skin
phototype have a significant influence on the changes
of skin color in humans. |
