TY - JOUR A1 - Bauer, Boris A1 - Goebeler, Matthias A1 - Weissbrich, Benedikt A1 - Kerstan, Andreas T1 - Kerinokeratosis papulosa of childhood JF - Dermatology N2 - Background: Kerinokeratosis papulosa (KP) is considered an extremely rare genodermatosis presenting usually as waxy papules on the trunk in childhood. Objective: To describe and analyze the clinical, histological and potential etiopathological aspects of KP. Methods: The dermatoscopic features of a new case of KP of childhood are investigated. The presence of human papillomavirus (HPV) DNA in lesional skin was studied by polymerase chain reaction. Furthermore, all cases of KP of childhood reported so far were reviewed. Results: As a diagnostic tool, we describe for the first time a dermatoscopic feature, namely a cribriform pattern of KP, in an 11-year-old boy. In addition, we detected HPV (type 57) in his KP lesions. Conclusions: Dermatoscopic examination might be a useful tool to distinguish KP from other skin lesions, e.g. common warts. The detection of HPV type 57 might hint to an etiological role of HPV for KP. KW - Waxy papulosis of childhood KW - Human papillomavirus KW - EVER1 KW - EVER2 KW - Kerinokeratosis papulosa Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-198997 SN - 1018-8665 SN - 1421-9832 N1 - This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. VL - 231 IS - 1 SP - 1 EP - 4 ER - TY - THES A1 - Bauer, Boris Alexander T1 - Induktion von NF-κB durch Albumin in immortalisierten humanen proximalen Tubuluszellen (IHKE-1) T1 - Albumin induces NF-κB expression in immortalized human proximal tubule-derived cells (IHKE-1) N2 - Hintergurnd: Erhöhte glomeruläre Filtration von Proteinen im Rahmen chronoischer Nierenenerkrankungen geht mit tubulointerstitiellem Schaden einschließlich Entzündung und fortschreitendem Funktionsverlust der Nierenfunktion einher. Proteine wie Albumin scheinen dabei per se eine pathogenetische Rolle zu spielen. Der Transkriptionsfaktor nuclear factor kappa B (NF-kB) scheint an den durch Proteinüberladung verursachten Pathomechanismen der Nierenentzündung beteiligt zu sein. Um die Albumin-induzierte Expression von NF-kB sowie die Expression des NF-kB-regulierten proinflammatorischen Zytokins Tumor Necrosis Faktor alpha (TNF-a) nach Exposition mit Albumin in humanen proximalen Tubuluszellen zu überprüfen, exponierten wir humane, von proximalen Tubuluszellen abstammende Zellen (IHKE-1) mit bovinem Serumalbumin (BSA: 50 und 500 microg/ml). Die NF-KB- und TNF-a-spezifische mRNA-Expression wurde durch RT-PCR bestimmt. NF-kB-spezifische Proteinexpression wurde mit Western-Blot-Verfahren analysiert. Ergebnisse: Albumin-induziert einen Anstieg der NF-kB-spezifischen mRNA-Expression und NF-kB-spezifischen Proteinexpression. Diese Effekte werden durch den Protein Kinase C-Inhibitor Bisindolylmaleimid und den Tyrosin Kinase Inhibitor Herbimycin A gehemmt. Ein Albumin.induzierter Anstieg der TNF-a-spezifischen mRNA-Expression als biologischer inflammatorischer Parameter war als mit der NF-B-Aktivität assoziiert messbar. N2 - Background: Enhanced glomerular filtration of proteins in the setting of chronic renal diseases is accopmpagnied by tubulointerstitial damage including inflammation and renal function deterioration. Proteins such as albumin seem to be a pathogenetic factor per se in this setting. The nuclear transcription factor kappa B (NF-KB) seems to be involved in protein-overload stimulated renal inflammatory pathomechanisms. To investigate albumin-induced NF-kappaB expression as well as the expression of the NF-KB-regulated pro-inflammatory cytokine Tumor necrosis factor alpha (TNF-a) upon exposure to albumin in human proximal tubular cells, we exposed human renal proximal tubule-derived cells (IHKE-1) to bovine serum albumin (BSA: 50 and 500 microg/ml). The NF-KB and TNF-alpha specific mRNA expression was detected by RT-PCR. NF-kappaB specific protein expression was analysed by Western blot. RESULTS: Albumin-exposure induced an increase in NF-kappaB specific mRNA expression and NF-kappaB protein expression. These effects are decreased by the protein kinase C (PKC) inhibitor bisindolylmaleimide I (BIM) and the tyrosine kinase inhibitor herbimycin A. An albumin-induced increase in TNF-alpha specific mRNA expression as biological, inflammatory parameter associated with the albumin-induced NF-kappaB activity was detectable. KW - Nierenfunktion KW - Proximaler Tubulus KW - Genregulation KW - Albumin KW - NF-κB KW - kidney KW - albumine KW - NF-κB KW - Protein Kinase C KW - Tyrosine Kinase Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-56996 ER - TY - JOUR A1 - Schäfer, Kristina A1 - Bauer, Boris A1 - Donhauser, Julian A1 - Kerstan, Andreas A1 - Hamm, Henning T1 - Becker Naevus Syndrome of the Lower Body: A New Case and Review of the Literature JF - Acta Dermato-Venereologica N2 - Becker naevus syndrome is a rare epidermal naevus syndrome defined by the co-occurrence of a Becker naevus with various cutaneous, muscular and skeletal anomalies. In the majority of cases, abnormalities exclusively consist of ipsilateral hypoplasia of the breast, areola and/or nipple in addition to the naevus. Here, we report on a 42-year-old woman with an extensive Becker naevus reaching from the left buttock to the left calf verified on histological examination. In addition, there was marked hypoplasia of the fatty tissue of the left thigh confirmed by magnetic resonance imaging in contrast to hyperplasia of the fatty tissue of the left gluteal area. Underlying muscles and bones were not affected. There was no difference in leg lengths. In addition, we review and discuss the features of Becker naevus syndrome with emphasis on 10 reported cases with involvement of the lower body. KW - lower body KW - Becker naevus KW - Becker naevus syndrome KW - hypoplasia of fatty tissue Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-171057 VL - 97 IS - 4 ER -