Ethnic differences in the structural properties of facial skin

Sugiyama-Nakagiri, Yoriko; Sugata, Keiichi; Hachiya, Akira; Osanai, Osamu; Ohuchi, Atsushi; Kitahara, Takashi

doi:10.1016/j.jdermsci.2008.08.008

Cited by 50 publications

(51 citation statements)

References 10 publications

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“…Black subjects showed the strongest pigmentation with refractile melanocytes and keratinocytes in the DEJ, whereas edged papillae with refractile borders were hardly visible in Caucasian subjects. Consistent with a previous report [29], we found a lower pore count and size in Asian subjects. On the other hand, Black subjects showed the greatest pore count and size in RCM, which could also be visualized through videodermoscopic imaging (Fig.…”

Section: Discussionsupporting

confidence: 93%

Effects of Short-Term Moisturizer Application in Different Ethnic Skin Types: Noninvasive Assessment with Optical Coherence Tomography and Reflectance Confocal Microscopy

Bağcı¹,

Ruini²,

Niesert³

et al. 2018

Skin Pharmacol Physiol

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Background/Aims: Ethnic skin types are known to differ in their morphological and physiological features. Thus, treatment responses may vary among different races. We aimed to assess skin morphology of different ethnicities and to compare the effect of short-term moisturizer application using optical coherence tomography (OCT) and reflectance confocal microscopy (RCM). Methods: Thirty healthy female subjects of European, Asian and Black ethnicity at 30–45 years of age were included in the study. OCT and RCM imaging was performed on the cheek to compare morphology. Following the 2-week application of a moisturizer cream (Sebamed® lotion) on one forearm, imaging was performed on both forearms to assess and compare treatment responses. Results: Epidermal thickness and morphology of pores varied between the three ethnic groups, with Black subjects displaying the thickest epidermis and largest skin pores. On the treated forearm, OCT measurements revealed a significantly thicker epidermis in all groups as compared to the untreated forearm. Width of skin folds on the treated forearm was measured by RCM to be significantly lower in all ethnic groups as compared to the untreated forearm. Conclusion: Different ethnic skin types showed variations in skin morphology and treatment response to short-term moisturizer application. OCT and RCM were useful methods for noninvasive, real-time, repeated assessment of ethnic skin.

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Section: Discussionsupporting

confidence: 93%

Effects of Short-Term Moisturizer Application in Different Ethnic Skin Types: Noninvasive Assessment with Optical Coherence Tomography and Reflectance Confocal Microscopy

Bağcı¹,

Ruini²,

Niesert³

et al. 2018

Skin Pharmacol Physiol

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“…To elucidate the mechanism(s) involved in the formation of facial pores, we have characterized the epidermal architecture around facial pores [2][3][4]. That epidermal architecture of facial pores reveals a thickened epidermis and undulating epidermal-dermal junctions, which consist of epidermal elongations hanging down into the dermis like stalactites, and dermal papillae rising into the epidermis like stalagmites (we named this epidermal architecture the 'SL structure' [2]).…”

Section: Introductionmentioning

confidence: 99%

“…That epidermal architecture of facial pores reveals a thickened epidermis and undulating epidermal-dermal junctions, which consist of epidermal elongations hanging down into the dermis like stalactites, and dermal papillae rising into the epidermis like stalagmites (we named this epidermal architecture the 'SL structure' [2]). In addition, the severity of impairment of the epidermal architecture around facial pores correlates [3,4]. Thus, we hypothesized that the epidermal architecture around facial pores contributes to the surface appearance of those pores.…”

Section: Introductionmentioning

confidence: 99%

Serum levels of IGF‐1 are related to human skin characteristics including the conspicuousness of facial pores

Sugiyama-Nakagiri

Naoe

Ohuchi

et al. 2011

Intern J of Cosmetic Sci

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Conspicuous facial pores are one type of serious aesthetic defects for many women. However, the mechanism(s) that underlie the conspicuousness of facial pores remains unclear. We previously characterized the epidermal architecture around facial pores that correlates with the appearance of those pores in various ethnic groups including Japanese. The goal of this study was to evaluate the possible relationships between facial pore size, the severity of impairment of epidermal architecture around facial pores and sebum output levels to investigate the possible role of IGF-1 in the pathogenesis of conspicuous facial pores. The subjects consisted of 38 healthy Japanese women (aged 22-41 years). IGF-1 was measured using immunoradiometric assay. Surface replicas were collected to compare pore sizes of cheek skin and horizontal cross-section images of cheek skin were obtained non-invasively from the same subjects using in vivo confocal laser scanning microscopy and the severity of impairment of epidermal architecture around facial pores was determined. The skin surface lipids of each subject were collected from their cheeks and lipid classes were determined using gas chromatography/flame ionization detection. The serum level of IGF-1 correlated significantly with total pore area (R = 0.36, P < 0.05), with the severity of impairment of epidermal architecture around facial pores (R = 0.43, P < 0.05) and with sebum output levels (R = 0.41, P < 0.01). The sebum output levels correlated with total pore area (R = 0.32, P < 0.05). Our study found that serum levels of IGF-1 are correlated with facial skin characteristics including facial pore size and with the severity of impairment of epidermal architecture around facial pores.

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“…Moreover, the literature writes about different patterns of skin aging for various human races. It is irrefutable that the slower aging is described to be for Asian race people, followed by the african-american population [30].…”

Section: Biological Clock's Alteringmentioning

confidence: 99%

Periorbital Hyperpigmentation, a Dermatologic Condition Having a Strong Geographic and Ethnic Determinism

Andrei¹,

Grujic²,

Lazãr³

et al. 2018

Preprint

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POH (Peri Orbital Hyperpigmentation) represents a minor clinical entity that attracts immense aesthetic damages and it generates social integration difficulties. This review focuses on the etiopathogenic causes of this entity, differentiating and reclassifying this defect as having, on the one hand, genetic causes of melanic hyperproduction -for Fitzpatrick cutaneous phototypes IV and V -and, on the other hand, both genetic and acquired vascular causes, in individuals with light-coloured skin phototypes. Hence, there is a big difference in the field of pathogenic treatment, for the two entities. In addition, this study notes the direct relationship between skin aging and POH, especially for aquired vascular causes. In this reasoning, other aesthetic deficiencies of the skin in the palpebral area should be also considered, like: blepharochalasis, wrinkles, the anatomical causes of the lower eyelid shading, symmetrical or asymmetric suborbital oedema. All of these issues will complicate the therapeutic decision and subsidiary, the pharmaceutical advice. In this context, the review shows the guidelines for a honest councelling of the patients, pointing the efficiency limit for the topical pharmaceutical medication (depigmentants, exfoliants) versus the necessity of minimally invasive or/ and surgical treatments (in blefarochalasis).

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Ethnic differences in the structural properties of facial skin

Cited by 50 publications

References 10 publications

Effects of Short-Term Moisturizer Application in Different Ethnic Skin Types: Noninvasive Assessment with Optical Coherence Tomography and Reflectance Confocal Microscopy

Effects of Short-Term Moisturizer Application in Different Ethnic Skin Types: Noninvasive Assessment with Optical Coherence Tomography and Reflectance Confocal Microscopy

Serum levels of IGF‐1 are related to human skin characteristics including the conspicuousness of facial pores

Periorbital Hyperpigmentation, a Dermatologic Condition Having a Strong Geographic and Ethnic Determinism

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