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Die Feinstruktur des menschlichen Haares

III. Das Haarpigment
  • C. Orfanos
  • H. Ruska
Article

Zusammenfassung

Haar- und Hautpigment zeigen manche morphologische Unterschiede. Die Pigmentgranula des Haares sind größer, kommen nicht in Melanosomen-Komplexen vor, sind vereinzelt auch intercellulär lokalisiert und lassen zwei formen erkennen, die für schwarze und blonde Haare charakteristisch sind und offenbar dem Eu- und Phaeomelanin entsprechen.

Schwarze Haare enthalten ca. 0,35–1,0 μm große, ovaläre Granula mit homogener Innenstruktur (Typ A, Eumelanin). Blonde Haare dagegen besitzen kleinere, ca. 0,2–0,7 μm, länglichere Granula mit geschichteter Innenstruktur (Typ B, Phaeomelanin). Die Haarfarbe (schwarz oder blond) hängt vom Typ der enthaltenen Pigmentgranula ab. Die Farbintensität dagegen (braun, bräunlich, dunkeloder hellblond) wird von der Zahl der Pigmentgranula bestimmt.

Es finden sich einige Ähnlichkeiten zwischen den unreifen Pigmentgranula schwarzer Haare, beschrieben von anderen Autoren, und den hier beschriebenen reifen Pigmentgranula blonder Haare. Manches spricht jedoch gegen die Annahme, daß das blonde Pigment nur eine Vorstufe des schwarzen darstellt.

Fine structure of human hair

III. Hairpigment

Summary

There are significant morphological differences between human hair pigment granules and human skin pigment granules. The melanin granules of hair are distinguished by their large size, the absence of melanosome-complexes and sometimes by their extracellular localization. Moreover, pigment granules of hair show two different types of granules characteristic for black or blond hairs:

Black hairs contain large (ca. 0.35×1.0 μm), oval shaped granules with homogenous internal structure (Type A, Eumelanin). Blond hairs contain smaller (ca. 0.2×0.7 μm), long shaped granules with layered internal structure (Type B, Phaeomelanin). Hair color (black or blond) depends on the type of granules present. Color intensity (brown, brownish, darkblond, lightblond etc.) however, depends on the quantity of granules in each hair.

There are some similarities between the immature forms of black pigment granules described by several authors and the mature pigment granules of blond hair described in this work. But it seems unlikely that the pigment of blond hair is only an immature form of black hair pigment.

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Copyright information

© Springer-Verlag 1968

Authors and Affiliations

  • C. Orfanos
    • 1
  • H. Ruska
    • 2
  1. 1.Universitäts-Hautklinik KölnKölnDeutschland
  2. 2.Institut für Biophysik und Elektronenmikroskopie der Universität DüsseldorfDüsseldorfDeutschland

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