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Sulle Anomalie Pigmentarie dell'occhio dette « Albinismo Oculare » ed ancora sopra il caso delle gemelle monozigotiche albine descritte da Hanhart

Published online by Cambridge University Press:  01 August 2014

L. Gedda  and
S. Bérard-Magistretti
L. Gedda
Affiliation:
Istituto di Genetica Medica dell'Università di Roma
S. Bérard-Magistretti
Affiliation:
Istituto di Genetica Medica dell'Università di Roma

Summary

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The Authors have studied a pair of MZ twins, both affected with ocular albinism, two boys—probably consanguineous—also affected with ocular albinism, a DZ opposite—sexed twin—pair with the male twin affected with ocular albinism and many relatives affected with localized or generalized pigment anomalies, and the female MZ twin-pair concordant as to total albinism, already described by Hanhart.

The Autors criticise current classifications of hereditary albinism which do not accord themselves with the samples and which do not explain the phenogenesis of the disease. They suggest to classify the hereditary forms of albinism in two fundamental classes. In the first one would be included the cases of total and non-total albinism depending on an enzymopathy which alters the normal melanogenesis. In the second one would be included the cases in which the specific enzymes, tough normally present, encounter some local causes enhibiting their action. Cases nos. I and II of the present work would belong to the first class, while cases nos. III and IV would belong to the second one.

Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 10 , Issue 1 , January 1961 , pp. 21 - 48
Copyright
Copyright © The International Society for Twin Studies 1961

References

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