Pigmentation

Skin colour is perhaps the most decisive and abused physical characteristic of humankind. This book presents a multidisciplinary overview of how and why human populations vary so markedly in their skin colour. The biological aspects of the pigment cell and its production of melanin are reviewed. The functions of melanin in the skin, brain, eye and ear are considered, and the common clinical abnormalities of pigmentation, such as albinism, are described and illustrated. Detailed reflectance data from worldwide surveys of skin colour are also presented. The historical and contemporary background of the phenomenon is explored in relation to the so-called 'colour problem' in society. Finally, the possible evolutionary forces which shape human pigmentation are assessed. This fascinating account will be of interest to graduate students and researchers of biological anthropology, anatomy, physiology and dermatology, as well as medical practitioners.

Skin colour is perhaps the most decisive and abused physical characteristic of humankind. This book presents a multidisciplinary overview of how and why human populations vary so markedly in their skin colour. The biological aspects of the pigment cell and its production of melanin are reviewed. The functions of melanin in the skin, brain, eye and ear are considered, and the common clinical abnormalities of pigmentation, such as albinism, are described and illustrated. Detailed reflectance data from worldwide surveys of skin colour are also presented. The historical and contemporary background of the phenomenon is explored in relation to the so-called 'colour problem' in society. Finally, the possible evolutionary forces which shape human pigmentation are assessed. This fascinating account will be of interest to graduate students and researchers of biological anthropology, anatomy, physiology and dermatology, as well as medical practitioners.

Any successful business has to keep an ear to the ground and remain one step ahead of competitors. Savvy professionals recognize an expanding market and develop the products and services to tap into i

Recent technological advances have provided unique opportunities for the exploration of alternatives to the industrial use of chemically produced synthetic colors. The most promising developments in t

Is there anything that has not been turned into colors? Or is there anything that could not be turned into colors? How far can we go with our love for beautiful colors? We all have favorite colors whi

Recognizing the enormous variety of skin diseases in lightly pigmented skin depends on the development of a number of visual skills that have to be developed still further to recognize skin diseases i

Richly pigmented skin is the most common skin type internationally Historically, dermatology has focused on white skin. But rich pigmentation can lead to differences in presentation, disease cours

The surface pigmentation of vertebrates is controlled by specialized cells able to synthesize a variety of pigments collectively known as melanins. Recent research has shown that melanins are produced

This unique book is the only comprehensive guide to both surgical and nonsurgical cosmetic treatment of patients with darker skin pigmentation, including patients of African, Asian, and Latin descent.

In the natural world colour is obvious and its importance in advertising the presence of flowers to pollinators and in camouflage is well known. In most cases the property of colour is due to the presence in the tissues of natural pigments. But these pigments are of much greater importance than merely to give colour, e.g. the fundamental light-harvesting molecules of photosynthesis, the light-detecting molecules of vision and haemoglobin in the blood. This book describes the structures and properties of the main groups of natural pigments, their distribution in Nature, their biosynthesis and functions and their associated chemistry and biology. Industrial applications, and medical significance and uses, of certain groups of pigments are outlined and some ecological aspects of colour and pigmentation are touched upon. The book was written as a textbook for advanced undergraduates and graduate students and concentrates on the main features of each class of pigments and on general princip

This is the first book to describe the scientific basis for the action of plant polyphenols in a wide range of technologically important phenomena. The book opens with a general summary of polyphenolic structure and a discussion of the physical and chemical basis of non-covalent molecular interactions (the process of molecular recognition) and the means by which polyphenols initiate the many and varied properties they display. There has been a big increase in interest in our ability to understand the importance of polyphenols in areas as diverse as agriculture, ecology and food selection, foodstuffs and nutrition, beverages (astringency and bitterness), natural medicines (the so-called 'French paradox'), floral pigmentation, natural glues and varnishes and the age-old methods for the manufacture of leather. The role of polyphenols in all of these areas is discussed. This book will be of value to a wide range of researchers with an interest in polyphenolics.

Presents the latest information concerning the clinical presentation, etiology, and treatment of skin changes and diseases in pregnancy, including pigmentation, increased vascularity, striae, pruritus