Format:
1 Online-Ressource
ISBN:
9781788015981
,
9781788018609
Series Statement:
Comprehensive Series in Photochemical & Photobiological Sciences 19
Content:
Cover; Comprehensive Series in Photochemical and Photobiological Science; Preface; Contents; Chapter 1 -- Photoaging in Caucasians; 1.1. The Scope of the Photoaging Problem; 1.2. Introduction; 1.3. Intrinsic Aging; 1.3.1. Histological Changes of Intrinsic Aging; 1.4. Extrinsic Aging; 1.5. Histological Changes of Extrinsic Aging; 1.6. Elastic Fibres; 1.7. Fibrillin-rich Microfibrils; 1.8. Collagens; 1.8.1. Fibrillar Collagens I and III; 1.8.2. Collagen VII and Laminin-332; 1.9. CD44 and Hyaluronidase; 1.10. Vascular Factors; 1.11. Morphometric Measurements; 1.12. Photonumeric Scales
Content:
1.13. ConclusionsReferences; Chapter 2 -- Photodamage in Skin of Color; 2.1. Introduction; 2.1.1 .Defining Skin Types; 2.1.2. Structural Differences in Skin of Color; 2.1.2.1. Epidermis. The outermost layer of the skin plays a significant role as a barrier from environmental insults. The epidermi ... ; 2.1.2.1.1. Keratinocytes. Keratinocytes are key epidermal cells. They play an integral role in maintaining the structural integrit ... ; 2.1.2.1.2. Melanocytes. Melanocytes are derived from the neural crest, and migrate to the epidermis during embryogenesis. Melanocy ...
Content:
2.1.2.1.3. Melanin. There is a strong correlation between skin pigmentation and melanin content in surface keratinocytes. 17 Differ ... 2.1.2.2. Dermis. While pigmentation is certainly the most striking variance between ethnicities, morphological differences in the ... ; 2.2. Skin Aging: Intrinsic and Extrinsic Pathways; 2.2.1. Photobiological Responses in Skin of Color; 2.2.1.1. Ultraviolet Radiation Exposure. UVR accounts for approximately 7% of solar radiation. It is divided into UVA (320-400 nm) ...
Content:
2.2.1.1.1. Erythema. UVB is 1000 times more erythemogenic than UVA. A well- recognized characteristic of ethnic skin is the decrea ... 2.2.1.1.2. Pigmentation. UVR exposure stimulates pigmentation in all but the fairest skin types (FSPC I). UV- related tanning is c ... ; 2.2.1.1.3. Photoaging and Photocarcinogenesis. UVR causes ROS production. In addition to this, UV irradiation depletes endogenous ... ; 2.2.1.2. Visible Light Exposure. The visible light (VL) spectrum ranges from 400 to 760 nm. VL comprises up to 44% of solar radiat ...
Content:
2.2.1.2.1. Erythema. The erythemogenic effect of visible light on skin has been attributed to a thermal component. It is hypothesi ... 2.2.1.2.2. Pigmentation. Similar to UVR, VL exposure is associated with the induction of pigmentation, both in vivo and ex vivo. I ... ; 2.2.1.2.3. Photoaging and Photocarcinogenesis. Liebel et al. reported a dose- dependent increase of ROS, inflammatory cytokines, a ... ; 2.2.1.3. Infrared Exposure. Infrared (IR) accounts for approximately 40% of solar radiation reaching the earth's surface. IR is di ...
Content:
Cutaneous Photoaging provides an international perspective on the causes, consequences, pathophysiology and treatment of photoaging, ideal for dermatologists, students and professionals in photoscience
Additional Edition:
ISBN 9781788011266
Additional Edition:
Erscheint auch als Druck-Ausgabe ISBN 9781788011266
Language:
English
DOI:
10.1039/9781788015981
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