1,720,982 research outputs found
Marie Unna hereditary hypotrichosis
No full textHereditary congenital :hypotrichosis is an autosomal dominant pilar dysplasia first described by Marie Unna in an extended German family. The diffuse hair defect typically occurs as an isolated phenomenon and the ultrastructural hair findings consist of-both torsion and longitudinal grooving of the hair shaft. A large pedigree comprising 6 generations with 20 members affected by Marie Unna hypotrichosis from Italy is reported
Efficacy of calcipotriol versus lactic acid cream in the treatment of lamellar and x-linked ichthyoses
No full textThe aim of this study was to compare the effects of calcipotriol and lactic acid creams in the treatment of lamellar and X-linked ichthyoses. A group of 20 patients with lamellar and X-linked ichthyoses were treated for 2 months. A major improvement was noted with both therapies in both conditions. The different mechanisms of action of the two compounds are discussed. © 1994 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted
Hereditary multiple fibrofolliculomas, trichodiscomas and acrochordons: syndrome of Birt-Hogg-Dube
No full textThe syndrome of Birt-Hogg-Dube (BHD) is an autosomal dominant syndrome, characterized by a triad of cutaneous lesions including multiple fibrofolliculomas, trichodiscomas, and acrochordons. There are many clinical expressions, solitary and multiple forms, with or without other skin tumors. In the literature BHD syndrome has been associated with internal malignancy. We describe a patient with multiple firm, skin-colored papules in which the three types of lesion are documented. No signs of systemic disease were present. (C) 1998 Elsevier Science B.V. All rights reserve
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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