1
|
Kazmierski J, Postmus D, Wyler E, Fischer C, Meixenberger K, Loyal L, Thiel A, Bannert N, Landthaler M, Goffinet C. PP 1.22 – 00120 Suppression of CD4+ T-cell-intrinsic immunity by HIV-1 latency-reversing HDACi. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
2
|
Datz E, Zeman F, Koller M, Szeimies RM, Berneburg M, Landthaler M, Bosserhoff AK, Karrer S. Phototherapy-induced elevation of serum level of melanoma inhibitory activity. Photodermatol Photoimmunol Photomed 2019; 35:255-260. [PMID: 30815924 DOI: 10.1111/phpp.12461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/27/2019] [Accepted: 02/25/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Phototherapy is a frequently used treatment modality for a variety of dermatologic diseases. UV radiation has different effects on the skin, for example increased production and release of cytokines and other proteins, and is involved in the initiation and progression of skin cancer. Objective of this clinical trial was to investigate potential systemic effects of UV phototherapy on cytokine profiles in blood. METHODS In a prospective, mono-centric, one-armed study, the serum levels of the melanoma tumour marker "melanoma inhibitory activity" (MIA), Il-1α, Il-4, Il-6, Il-10, TNF-α and IFN-γ of 115 patients with different skin diseases were compared before and 24-48 hours as well as 2-4 weeks after the first phototherapy with PUVA (psoralen and ultraviolet A), UVA or UVB, or both. Data were analysed using linear mixed models. RESULTS Estimated marginal means of MIA levels were 6.05 ng/mL (95%-CI: 5.37-6.72, range: 2.83-14.49) before the first treatment, which had significantly increased to 6.79 ng/mL 2-4 weeks after the first phototherapy (CI 95%: 6.12-7.47, range: 3.09-15.45; P = 0.0042). MIA levels 2-4 weeks after the first phototherapy were significantly higher than 24-48 hours after the first phototherapy (P = 0.0083). 2-4 weeks after the first treatment, TNF-α levels had decreased significantly (P = 0.033) more in patients with psoriasis who had responded well to phototherapy than in patients unresponsive to treatment. Serum levels of the other cytokines had not changed significantly. CONCLUSIONS Short-term phototherapy significantly increased the serum levels of the melanoma tumour marker MIA. The potential clinical relevance of these findings (ie an increased risk of melanoma) is unclear and should be further investigated.
Collapse
Affiliation(s)
- Elisabeth Datz
- Department of Dermatology, University Medical Centre Regensburg, Regensburg, Germany
| | - Florian Zeman
- Centre for Clinical Studies, University Medical Centre Regensburg, Regensburg, Germany
| | - Michael Koller
- Centre for Clinical Studies, University Medical Centre Regensburg, Regensburg, Germany
| | - Rolf-Markus Szeimies
- Department of Dermatology and Allergology, Klinikum Vest GmbH, Recklinghausen, Germany
| | - Mark Berneburg
- Department of Dermatology, University Medical Centre Regensburg, Regensburg, Germany
| | - Michael Landthaler
- Department of Dermatology, University Medical Centre Regensburg, Regensburg, Germany
| | - Anja K Bosserhoff
- Institute of Biochemistry, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Sigrid Karrer
- Department of Dermatology, University Medical Centre Regensburg, Regensburg, Germany
| |
Collapse
|
3
|
Datz E, Schönberger C, Zeman F, Koller M, Berneburg M, Landthaler M, Karrer S, Hohenleutner U, Hohenleutner S. Fractional carbon dioxide laser resurfacing of skin grafts: long-term results of a prospective, randomized, split-scar, evaluator-blinded study. Lasers Surg Med 2018; 50:1010-1016. [DOI: 10.1002/lsm.22950] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Elisabeth Datz
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Carmen Schönberger
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
- Operative Dentistry and Periodontology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Florian Zeman
- Centre for Clinical Studies; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Michael Koller
- Centre for Clinical Studies; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Mark Berneburg
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Michael Landthaler
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Sigrid Karrer
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Ulrich Hohenleutner
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| | - Silvia Hohenleutner
- Department of Dermatology; University Medical Centre Regensburg; 93042 Regensburg Germany
| |
Collapse
|
4
|
Maisch T, Bosserhoff AK, Unger P, Heider J, Shimizu T, Zimmermann JL, Morfill GE, Landthaler M, Karrer S. Investigation of toxicity and mutagenicity of cold atmospheric argon plasma. Environ Mol Mutagen 2017; 58:172-177. [PMID: 28370324 DOI: 10.1002/em.22086] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 06/07/2023]
Abstract
Cold atmospheric argon plasma is recognized as a new contact free approach for the decrease of bacterial load on chronic wounds in patients. So far very limited data are available on its toxicity and mutagenicity on eukaryotic cells. Thus, the toxic/mutagenic potential of cold atmospheric argon plasma using the MicroPlaSter β® , which has been used efficiently in humans treating chronic and acute wounds, was investigated using the XTT assay in keratinocytes and fibroblasts and the HGPRT (hypoxanthine guanine phosphoribosyl transferase) assay with V79 Chinese hamster cells. The tested clinical parameter of a 2 min cold atmospheric argon plasma treatment revealed no relevant toxicity on keratinocytes (viability: 76% ± 0.17%) and on fibroblasts (viability: 81.8 ± 0.10) after 72 hr as compared to the untreated controls. No mutagenicity was detected in the HGPRT assay with V79 cells even after repetitive CAP treatments of 2-10 min every 24 hr for up to 5 days. In contrast, UV-C irradiation of V79 cells, used as a positive control in the HGPRT test, led to DNA damage and mutagenic effects. Our findings indicate that cold atmospheric plasma using the MicroPlaSter β® shows negligible effects on keratinocytes and fibroblasts but no mutagenic potential in the HGPRT assay, indicating a new contact free safe technology. Environ. Mol. Mutagen. 58:172-177, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- T Maisch
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - A K Bosserhoff
- Institute of Biochemistry, Emil-Fischer Zentrum, Friedrich-Alexander-University of Erlangen-Nuernberg, Germany
- Comprehensive Cancer Center Erlangen, CCC-ENM, Friedrich-Alexander University of Erlangen-Nürnberg, Germany
| | - P Unger
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - J Heider
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - T Shimizu
- Formerly Max-Planck Institute for Extraterrestrial Physics, Garching, Germany
- Terraplasma GmbH, Garching, Germany
| | - J L Zimmermann
- Formerly Max-Planck Institute for Extraterrestrial Physics, Garching, Germany
- Terraplasma GmbH, Garching, Germany
| | - G E Morfill
- Formerly Max-Planck Institute for Extraterrestrial Physics, Garching, Germany
- Terraplasma GmbH, Garching, Germany
| | - M Landthaler
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - S Karrer
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| |
Collapse
|
5
|
Kohl E, Popp C, Zeman F, Unger P, Koller M, Landthaler M, Karrer S, Szeimies R. Photodynamic therapy using intense pulsed light for treating actinic keratoses and photoaged skin of the dorsal hands: a randomized placebo‐controlled study. Br J Dermatol 2016; 176:352-362. [DOI: 10.1111/bjd.14970] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2016] [Indexed: 11/29/2022]
Affiliation(s)
- E. Kohl
- Department of Dermatology University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - C. Popp
- Dornierstr. 33e 94315 Straubing Germany
| | - F. Zeman
- Center for Clinical Trials Regensburg University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - P. Unger
- Department of Dermatology University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - M. Koller
- Center for Clinical Trials Regensburg University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - M. Landthaler
- Department of Dermatology University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - S. Karrer
- Department of Dermatology University Medical Center Regensburg Franz‐Josef‐Strauss‐Allee 11 93053 Regensburg Germany
| | - R.‐M. Szeimies
- Department of Dermatology and Allergology Klinikum Vest Academic Teaching Hospital 45657 Recklinghausen Germany
| |
Collapse
|
6
|
Groesser L, Singer S, Peterhof E, Landthaler M, Heigl U, Schneider-Brachert W, Berneburg M, Hafner C. KRAS, HRAS and EGFR Mutations in Sporadic Sebaceous Gland Hyperplasia. Acta Derm Venereol 2016; 96:737-41. [PMID: 26804118 DOI: 10.2340/00015555-2351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Sporadic sebaceous gland hyperplasia (SGH) is a benign skin lesion, with a high prevalence in the general population. Although SGH has been attributed to both extrinsic and intrinsic factors, the underlying genetic changes have not yet been characterized. Recently, HRAS and KRAS mutations have been identified in sebaceous naevus, a hamartoma sharing histological characteristics with SGH. Therefore we screened 43 SGH for activating mutations in RAS genes and other oncogenes. We identified a wide spectrum of mutually exclusive activating HRAS (8/43), KRAS (11/43) and EGFR mutations (7/31) in altogether 60% of the lesions investigated. A RAS and EGFR wildtype status was found in 15 normal sebaceous glands in the head and neck area. Our findings indicate that activating HRAS, KRAS and EGFR mutations play a major role in the pathogenesis of sporadic SGH. These results support the concept that SGH is a true benign neoplasm rather than a reactive hyperplasia.
Collapse
Affiliation(s)
- Leopold Groesser
- Department of Dermatology, University of Regensburg, DE-93053 Regensburg, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Fernandez-Mercado M, Larrea E, Goicoechea I, Ceberio I, Landthaler M, Arauzo-Bravo M, Lawrie C. Endogenous Ago2 PAR-CLIP reveals novel target genes of deregulated miRNAs in DLBCL. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61026-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
Groesser L, Peterhof E, Evert M, Landthaler M, Berneburg M, Hafner C. BRAF and RAS Mutations in Sporadic and Secondary Pyogenic Granuloma. J Invest Dermatol 2016; 136:481-6. [PMID: 26802240 DOI: 10.1038/jid.2015.376] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/07/2015] [Accepted: 09/11/2015] [Indexed: 01/13/2023]
Abstract
Pyogenic granuloma (PG) is a common benign vascular skin lesion presenting as a rapidly growing angiomatous papule. The pathogenesis of most sporadic PGs and PGs associated with port wine stains (PWSs) remains elusive. We report that of 10 PGs secondarily arisen on a PWS, 8 showed a BRAF c.1799T>A (p.(Val600Glu)) and 1 a NRAS c.182A>G (p.(Gln61Arg)) mutation. The GNAQ c.548G>A mutation was identified in the PG and in the respective underlying PWS, indicating that PGs originate from cells of the PWS. In contrast to PG, 12 papulonodular lesions, which had developed in the PWSs of seven patients, showed a RAS and BRAF wild-type status. In sporadic PG we identified the BRAF c.1799T>A mutation in 3 of 25, a BRAF c.1391G>A mutation in 1 of 25, and a KRAS c.37G>C mutation in 1 of 25. Mutation-specific immunohistochemical detection of BRAF p.(Val600Glu) confirmed endothelial cells as carriers of the mutation in secondary and sporadic PG. Our study identifies the BRAF c.1799T>A mutation as a major driver mutation in the pathogenesis of, particularly, secondary PG. These data shed light on the hitherto undetermined genetic basis of PG and classify PG as a benign neoplasm.
Collapse
Affiliation(s)
- Leopold Groesser
- Department of Dermatology, University of Regensburg, Regensburg, Germany.
| | - Eva Peterhof
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | - Matthias Evert
- Institute of Pathology, University of Regensburg, Regensburg, Germany
| | - Michael Landthaler
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | - Mark Berneburg
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | | |
Collapse
|
9
|
Hart C, Vogelhuber M, Hafner C, Landthaler M, Berneburg M, Haferkamp S, Herr W, Reichle A. Biomodulatory metronomic therapy in stage IV melanoma is well-tolerated and may induce prolonged progression-free survival, a phase I trial. J Eur Acad Dermatol Venereol 2015; 30:e119-e121. [PMID: 26417987 PMCID: PMC5108438 DOI: 10.1111/jdv.13391] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- C Hart
- Department of Internal Medicine III, Haematology & Oncology, University Hospital of Regensburg, Regensburg, Germany
| | - M Vogelhuber
- Department of Internal Medicine III, Haematology & Oncology, University Hospital of Regensburg, Regensburg, Germany
| | - C Hafner
- Department of Dermatology, University Hospital of Regensburg, Regensburg, Germany
| | - M Landthaler
- Department of Dermatology, University Hospital of Regensburg, Regensburg, Germany
| | - M Berneburg
- Department of Dermatology, University Hospital of Regensburg, Regensburg, Germany
| | - S Haferkamp
- Department of Dermatology, University Hospital of Regensburg, Regensburg, Germany
| | - W Herr
- Department of Internal Medicine III, Haematology & Oncology, University Hospital of Regensburg, Regensburg, Germany
| | - A Reichle
- Department of Internal Medicine III, Haematology & Oncology, University Hospital of Regensburg, Regensburg, Germany.
| |
Collapse
|
10
|
Klein A, Karrer S, Horner C, Werner A, Heinlin J, Zeman F, Koller M, Landthaler M, Szeimies RM, Gruber M, Graf B, Hansen E, Kerscher C. Comparing cold-air analgesia, systemically administered analgesia and scalp nerve blocks for pain management during photodynamic therapy for actinic keratosis of the scalp presenting as field cancerization: a randomized controlled trial. Br J Dermatol 2015; 173:192-200. [DOI: 10.1111/bjd.13547] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2014] [Indexed: 01/02/2023]
Affiliation(s)
- A. Klein
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - S. Karrer
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - C. Horner
- Department of Anaesthesiology; University Hospital Regensburg; Regensburg Germany
| | - A. Werner
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - J. Heinlin
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - F. Zeman
- Department of Centre for Clinical Studies; University Hospital Regensburg; Regensburg Germany
| | - M. Koller
- Department of Centre for Clinical Studies; University Hospital Regensburg; Regensburg Germany
| | - M. Landthaler
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - R.-M. Szeimies
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - M. Gruber
- Department of Anaesthesiology; University Hospital Regensburg; Regensburg Germany
| | - B. Graf
- Department of Anaesthesiology; University Hospital Regensburg; Regensburg Germany
| | - E. Hansen
- Department of Anaesthesiology; University Hospital Regensburg; Regensburg Germany
| | - C. Kerscher
- Department of Anaesthesiology; University Hospital Regensburg; Regensburg Germany
| |
Collapse
|
11
|
Affiliation(s)
- J Ring
- Dermatologische Klinik und Poliklinik, Ludwig-Maximilians University, Munich, FRG
| | | |
Collapse
|
12
|
Landthaler M, Haina D, Brunner R, Waidelich W, Braun-Falco O. A 5-year experience with laser therapy in dermatology. Curr Probl Dermatol 2015; 15:272-81. [PMID: 3753916 DOI: 10.1159/000412109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
13
|
Landthaler M, Hohenleutner U, Abd el Raheem TA. Therapy of vascular lesions in the head and neck area by means of argon, Nd: YAG, CO2 and flashlamp-pumped pulsed dye lasers. Adv Otorhinolaryngol 2015; 49:81-6. [PMID: 7653393 DOI: 10.1159/000424345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- M Landthaler
- Department of Dermatology, University of Regensburg, Germany
| | | | | |
Collapse
|
14
|
Brunner R, Haina D, Landthaler M, Waidelich W, Braun-Falco O. Applications of laser light of low power density. Experimental and clinical investigations. Curr Probl Dermatol 2015; 15:111-6. [PMID: 3512177 DOI: 10.1159/000412096] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
15
|
Arndt S, Landthaler M, Zimmermann JL, Unger P, Wacker E, Shimizu T, Li YF, Morfill GE, Bosserhoff AK, Karrer S. Effects of cold atmospheric plasma (CAP) on ß-defensins, inflammatory cytokines, and apoptosis-related molecules in keratinocytes in vitro and in vivo. PLoS One 2015; 10:e0120041. [PMID: 25768736 PMCID: PMC4359157 DOI: 10.1371/journal.pone.0120041] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 01/26/2015] [Indexed: 11/18/2022] Open
Abstract
Cold atmospheric plasma (CAP) has been gaining increasing interest as a new approach for the treatment of skin diseases or wounds. Although this approach has demonstrated promising antibacterial activity, its exact mechanism of action remains unclear. This study explored in vitro and in vivo whether CAP influences gene expression and molecular mechanisms in keratinocytes. Our results revealed that a 2 min CAP treatment using the MicroPlaSter ß in analogy to the performed clinical studies for wound treatment induces expression of IL-8, TGF-ß1, and TGF-ß2. In vitro and in vivo assays indicated that keratinocyte proliferation, migration, and apoptotic mechanisms were not affected by the CAP treatment under the applied conditions. Further, we observed that antimicrobial peptides of the ß-defensin family are upregulated after CAP treatment. In summary, our results suggest that a 2 min application of CAP induces gene expression of key regulators important for inflammation and wound healing without causing proliferation, migration or cell death in keratinocytes. The induction of ß-defensins in keratinocytes describes an absolutely new plasma strategy. Activation of antimicrobial peptides supports the well-known antibacterial effect of CAP treatment, whereas the mechanism of ß-defensin activation by CAP is not investigated so far.
Collapse
Affiliation(s)
- Stephanie Arndt
- Institute of Pathology, University Regensburg, D-93042 Regensburg, Germany
| | - Michael Landthaler
- Department of Dermatology, University Hospital Regensburg, D-93042 Regensburg, Germany
| | - Julia L. Zimmermann
- Max Planck Institute for Extraterrestrial Physics, D-85748 Garching, Germany
| | - Petra Unger
- Department of Dermatology, University Hospital Regensburg, D-93042 Regensburg, Germany
| | - Eva Wacker
- Institute of Pathology, University Regensburg, D-93042 Regensburg, Germany
| | - Tetsuji Shimizu
- Max Planck Institute for Extraterrestrial Physics, D-85748 Garching, Germany
| | - Yang-Fang Li
- Max Planck Institute for Extraterrestrial Physics, D-85748 Garching, Germany
| | - Gregor E. Morfill
- Max Planck Institute for Extraterrestrial Physics, D-85748 Garching, Germany
| | - Anja-Katrin Bosserhoff
- Institute of Biochemistry and Molecular Medicine, University Erlangen, D-91054—Erlangen, Germany
| | - Sigrid Karrer
- Department of Dermatology, University Hospital Regensburg, D-93042 Regensburg, Germany
- * E-mail:
| |
Collapse
|
16
|
Kohl E, Meierhöfer J, Koller M, Zeman F, Groesser L, Karrer S, Hohenleutner U, Landthaler M, Hohenleutner S. Fractional carbon dioxide laser resurfacing of rhytides and photoaged skin - A prospective clinical study on patient expectation and satisfaction. Lasers Surg Med 2015; 47:111-9. [DOI: 10.1002/lsm.22326] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Elisabeth Kohl
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Julia Meierhöfer
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Michael Koller
- Center for Clinical Studies; University Hospital Regensburg; 93053 Regensburg Germany
| | - Florian Zeman
- Center for Clinical Studies; University Hospital Regensburg; 93053 Regensburg Germany
| | - Leopold Groesser
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Sigrid Karrer
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Ulrich Hohenleutner
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Michael Landthaler
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| | - Silvia Hohenleutner
- Department of Dermatology; University Medical Center Regensburg; 93053 Regensburg Germany
| |
Collapse
|
17
|
Shen AS, Peterhof E, Kind P, Rütten A, Zelger B, Landthaler M, Berneburg M, Hafner C, Groesser L. Activating mutations in the RAS/mitogen-activated protein kinase signaling pathway in sporadic trichoblastoma and syringocystadenoma papilliferum. Hum Pathol 2014; 46:272-6. [PMID: 25532942 DOI: 10.1016/j.humpath.2014.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 10/24/2014] [Accepted: 11/01/2014] [Indexed: 10/24/2022]
Abstract
Trichoblastoma (TB) and syringocystadenoma papilliferum (SCAP) are both rare adnexal skin lesions occurring either sporadically or as secondary neoplasms in sebaceous nevi. TB and SCAP associated with sebaceous nevi have been shown to carry the same HRAS mutation as the underlying nevus. However, the genetic background of sporadic TB and SCAP has remained unknown. Therefore, we screened 18 sporadic TBs and 23 sporadic syringocystadenoma papillifera from 41 patients for the presence of activating mutations in RAS genes and other oncogenes. Using a RAS SNaPshot assay, HRAS mutations were detected in 2 (11%) of 18 sporadic TB and 6 (26%) of 23 sporadic syringocystadenoma papillifera. A KRAS mutation was identified in 1 sporadic SCAP. High-throughput oncogene mutation profiling furthermore identified BRAF V600E mutations in sporadic syringocystadenoma papillifera, which could be validated in 12 (52%) of 23 lesions using a BRAF SNaPshot assay. BRAF and RAS mutations were mutually exclusive in sporadic syringocystadenoma papillifera. No BRAF mutation could be detected in 3 syringocystadenoma papillifera secondarily arisen from a sebaceous nevus as well as in sporadic TB. In 14 lesions carrying an oncogenic mutation, nonlesional control tissue from the epidermal margin revealed a wild-type sequence, thus proving the somatic character of the mutation. Our results indicate that activation of the RAS-mitogen-activated protein kinase pathway by BRAF and RAS mutations contributes significantly to the tumorigenesis of sporadic SCAP and, less frequently, of sporadic TB.
Collapse
Affiliation(s)
- Anne-Sophie Shen
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany
| | - Eva Peterhof
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany
| | - Peter Kind
- Dermatohistological Laboratory Prof. Kind, 63065 Offenbach, Germany
| | - Arno Rütten
- Dermatopathology Friedrichshafen, 88048 Friedrichshafen, Germany
| | - Bernhard Zelger
- Department of Dermatology and Venerology, Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Michael Landthaler
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany
| | - Mark Berneburg
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany
| | - Christian Hafner
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany; Dermatohistological Laboratory, Sonnenstr. 7, 80331 Munich, Germany
| | - Leopold Groesser
- Department of Dermatology, University of Regensburg, 93053 Regensburg, Germany.
| |
Collapse
|
18
|
Gantner S, Rütten A, Requena L, Gassenmaier G, Landthaler M, Hafner C. CHILD syndrome with mild skin lesions: histopathologic clues for the diagnosis. J Cutan Pathol 2014; 41:787-90. [PMID: 25093865 DOI: 10.1111/cup.12377] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 07/29/2014] [Accepted: 08/03/2014] [Indexed: 11/29/2022]
Abstract
CHILD syndrome is an acronym signifying congenital hemidysplasia with ichthyosiform nevus and limb defects. A 27-year-old woman presented with chronic verrucous and hyperkeratotic skin lesions involving the left genital area, left hand and left foot since childhood. The histopathologic findings were consistent with verruciform xanthoma. In correlation with the clinical picture of a linear lesion, the diagnosis of CHILD nevus was made. Subsequent genetic analysis identified a germline c.324C>T (p.A105V) NSDHL mutation and confirmed a diagnosis of CHILD syndrome. This syndrome can be associated with only minimal clinical symptoms. The anatomical distribution of the lesions, a static clinical course and the typical histopathologic features of a CHILD nevus can serve as the clue to a diagnosis of CHILD syndrome in such cases.
Collapse
Affiliation(s)
- Susanne Gantner
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | | | | | | | | | | |
Collapse
|
19
|
Schreml S, Meier RJ, Kirschbaum M, Kong SC, Gehmert S, Felthaus O, Küchler S, Sharpe JR, Wöltje K, Weiß KT, Albert M, Seidl U, Schröder J, Morsczeck C, Prantl L, Duschl C, Pedersen SF, Gosau M, Berneburg M, Wolfbeis OS, Landthaler M, Babilas P. Luminescent dual sensors reveal extracellular pH-gradients and hypoxia on chronic wounds that disrupt epidermal repair. Theranostics 2014; 4:721-35. [PMID: 24883122 PMCID: PMC4038754 DOI: 10.7150/thno.9052] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 04/04/2014] [Indexed: 02/04/2023] Open
Abstract
Wound repair is a quiescent mechanism to restore barriers in multicellular organisms upon injury. In chronic wounds, however, this program prematurely stalls. It is known that patterns of extracellular signals within the wound fluid are crucial to healing. Extracellular pH (pHe) is precisely regulated and potentially important in signaling within wounds due to its diverse cellular effects. Additionally, sufficient oxygenation is a prerequisite for cell proliferation and protein synthesis during tissue repair. It was, however, impossible to study these parameters in vivo due to the lack of imaging tools. Here, we present luminescent biocompatible sensor foils for dual imaging of pHe and oxygenation in vivo. To visualize pHe and oxygen, we used time-domain dual lifetime referencing (tdDLR) and luminescence lifetime imaging (LLI), respectively. With these dual sensors, we discovered centripetally increasing pHe-gradients on human chronic wound surfaces. In a therapeutic approach, we identify pHe-gradients as pivotal governors of cell proliferation and migration, and show that these pHe-gradients disrupt epidermal barrier repair, thus wound closure. Parallel oxygen imaging also revealed marked hypoxia, albeit with no correlating oxygen partial pressure (pO2)-gradient. This highlights the distinct role of pHe-gradients in perturbed healing. We also found that pHe-gradients on chronic wounds of humans are predominantly generated via centrifugally increasing pHe-regulatory Na+/H+-exchanger-1 (NHE1)-expression. We show that the modification of pHe on chronic wound surfaces poses a promising strategy to improve healing. The study has broad implications for cell science where spatial pHe-variations play key roles, e.g. in tumor growth. Furthermore, the novel dual sensors presented herein can be used to visualize pHe and oxygenation in various biomedical fields.
Collapse
|
20
|
Kohl E, Meierhöfer J, Koller M, Zeman F, Klein A, Hohenleutner U, Landthaler M, Hohenleutner S. Fractional carbon dioxide laser resurfacing of rhytides and photoageing: a prospective study using profilometric analysis. Br J Dermatol 2014; 170:858-65. [DOI: 10.1111/bjd.12807] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2013] [Indexed: 11/27/2022]
Affiliation(s)
- E. Kohl
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - J. Meierhöfer
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - M. Koller
- Centre for Clinical Trials; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - F. Zeman
- Centre for Clinical Trials; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - A. Klein
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - U. Hohenleutner
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - M. Landthaler
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - S. Hohenleutner
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| |
Collapse
|
21
|
Heinlin J, Maisch T, Zimmermann JL, Shimizu T, Holzmann T, Simon M, Heider J, Landthaler M, Morfill G, Karrer S. Contact-free inactivation of Trichophyton rubrum and Microsporum canis by cold atmospheric plasma treatment. Future Microbiol 2014; 8:1097-106. [PMID: 24020738 DOI: 10.2217/fmb.13.86] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Cold atmospheric plasma (CAP) has already proven efficient at disinfection of microorganisms including biofilms. The objective of the present study is to assess the efficacy of CAP against the dermatophytes Trichophyton rubrum and Microsporum canis in vitro. MATERIALS & METHODS T. rubrum and M. canis were exposed to CAP for different treatment times and time intervals in vitro. Treatment with ciclopirox olamine or UVC radiation (0.120 J/cm(2)) served as controls. CAP was generated by the surface microdischarge technology. Fungal colony growth was measured upon CAP treatment. RESULTS Repeated daily CAP treatments of 10 min demonstrated an inhibition of growth during the treatment period of 9 days. Single CAP treatment sessions for 5, 8 and 10 min, as well as treatments for 5 or 8 min daily, resulted in less fungal growth inhibition. UVC radiation treatment failed, but not ciclopirox olamine. CONCLUSION CAP shows promising potential for future application in the treatment of dermatophyte infections.
Collapse
Affiliation(s)
- Julia Heinlin
- Department of Dermatology, University Hospital Regensburg, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Lehner K, Santarelli F, Vasold R, Penning R, Sidoroff A, König B, Landthaler M, Bäumler W. Black tattoos entail substantial uptake of genotoxicpolycyclic aromatic hydrocarbons (PAH) in human skin and regional lymph nodes. PLoS One 2014; 9:e92787. [PMID: 24670978 PMCID: PMC3966813 DOI: 10.1371/journal.pone.0092787] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 02/26/2014] [Indexed: 01/31/2023] Open
Abstract
Hundreds of millions of people worldwide have tattoos, which predominantly contain black inks consisting of soot products like Carbon Black or polycyclic aromatic hydrocarbons (PAH). We recently found up to 200 μg/g of PAH in commercial black inks. After skin tattooing, a substantial part of the ink and PAH should be transported to other anatomical sites like the regional lymph nodes. To allow a first estimation of health risk, we aimed to extract and quantify the amount of PAH in black tattooed skin and the regional lymph nodes of pre-existing tattoos. Firstly, we established an extraction method by using HPLC – DAD technology that enables the quantification of PAH concentrations in human tissue. After that, 16 specimens of human tattooed skin and corresponding regional lymph nodes were included in the study. All skin specimen and lymph nodes appeared deep black. The specimens were digested and tested for 20 different PAH at the same time.PAH were found in twelve of the 16 tattooed skin specimens and in eleven regional lymph nodes. The PAH concentration ranged from 0.1–0.6 μg/cm2 in the tattooed skin and 0.1–11.8 μg/g in the lymph nodes. Two major conclusions can be drawn from the present results. Firstly, PAH in black inks stay partially in skin or can be found in the regional lymph nodes. Secondly, the major part of tattooed PAH had disappeared from skin or might be found in other organs than skin and lymph nodes. Thus, beside inhalation and ingestion, tattooing has proven to be an additional, direct and effective route of PAH uptake into the human body.
Collapse
Affiliation(s)
- Karin Lehner
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | | | - Rudolf Vasold
- Department of Organic Chemistry, University of Regensburg, Regensburg, Germany
| | - Randolph Penning
- Department of Forensic Medicine, Ludwig Maximilian University, Munich, Germany
| | - Alexis Sidoroff
- Department of Dermatology and Venereology, University of Innsbruck, Innsbruck, Austria
| | - Burkhard König
- Department of Organic Chemistry, University of Regensburg, Regensburg, Germany
| | - Michael Landthaler
- Department of Dermatology, University of Regensburg, Regensburg, Germany
| | - Wolfgang Bäumler
- Department of Dermatology, University of Regensburg, Regensburg, Germany
- * E-mail:
| |
Collapse
|
23
|
Isbary G, Stolz W, Shimizu T, Monetti R, Bunk W, Schmidt HU, Morfill G, Klämpfl T, Steffes B, Thomas H, Heinlin J, Karrer S, Landthaler M, Zimmermann J. Cold atmospheric argon plasma treatment may accelerate wound healing in chronic wounds: Results of an open retrospective randomized controlled study in vivo. Clinical Plasma Medicine 2013. [DOI: 10.1016/j.cpme.2013.06.001] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
24
|
Schreml S, Schroeder J, Siegmund H, Eder F, Babilas P, Landthaler M, Karrer S. Plasmocytoma-induced intertriginous amyloid purpura. Ann Dermatol 2013; 25:391-2. [PMID: 24003294 PMCID: PMC3756216 DOI: 10.5021/ad.2013.25.3.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 10/09/2012] [Accepted: 11/12/2012] [Indexed: 11/24/2022] Open
Affiliation(s)
- Stephan Schreml
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
| | | | | | | | | | | | | |
Collapse
|
25
|
Klein S, Schreml S, Dolderer J, Gehmert S, Niederbichler A, Landthaler M, Prantl L. Evidenzbasierte topische Therapie chronischer Wunden nach dem T.I.M.E.-Prinzip. J Dtsch Dermatol Ges 2013. [DOI: 10.1111/ddg.12138_suppl] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Silvan Klein
- Zentrum für Plastische-; Hand- und Wiederherstellungschirurgie; Universitätsklinikum Regensburg
| | - Stephan Schreml
- Klinik und Poliklinik für Dermatologie; Universitätsklinikum Regensburg
| | - Juergen Dolderer
- Zentrum für Plastische-; Hand- und Wiederherstellungschirurgie; Universitätsklinikum Regensburg
| | - Sebastian Gehmert
- Zentrum für Plastische-; Hand- und Wiederherstellungschirurgie; Universitätsklinikum Regensburg
| | - Andreas Niederbichler
- Zentrum für Plastische-; Hand- und Wiederherstellungschirurgie; Universitätsklinikum Regensburg
| | | | - Lukas Prantl
- Zentrum für Plastische-; Hand- und Wiederherstellungschirurgie; Universitätsklinikum Regensburg
| |
Collapse
|
26
|
Klein A, Buschmann M, Babilas P, Landthaler M, Bäumler W. Indocyanine green-augmented diode laser therapy vs. long-pulsed Nd:YAG (1064 nm) laser treatment of telangiectatic leg veins: a randomized controlled trial. Br J Dermatol 2013; 169:365-73. [DOI: 10.1111/bjd.12415] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2013] [Indexed: 11/30/2022]
Affiliation(s)
- A. Klein
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - M. Buschmann
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - P. Babilas
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - M. Landthaler
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - W. Bäumler
- Department of Dermatology; University Hospital Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| |
Collapse
|
27
|
Heinlin J, Zimmermann JL, Zeman F, Bunk W, Isbary G, Landthaler M, Maisch T, Monetti R, Morfill G, Shimizu T, Steinbauer J, Stolz W, Karrer S. Randomized placebo-controlled human pilot study of cold atmospheric argon plasma on skin graft donor sites. Wound Repair Regen 2013; 21:800-7. [DOI: 10.1111/wrr.12078] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 06/02/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Julia Heinlin
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | | | - Florian Zeman
- Center for Clinical Studies; University Hospital Regensburg; Regensburg Germany
| | - Wolfram Bunk
- Max Planck Institute for Extraterrestrial Physics; Garching Germany
| | - Georg Isbary
- Department of Dermatology; Hospital Munich-Schwabing; Munich Germany
| | - Michael Landthaler
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - Tim Maisch
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - Roberto Monetti
- Max Planck Institute for Extraterrestrial Physics; Garching Germany
| | - Gregor Morfill
- Max Planck Institute for Extraterrestrial Physics; Garching Germany
| | - Tetsuji Shimizu
- Max Planck Institute for Extraterrestrial Physics; Garching Germany
| | - Julia Steinbauer
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| | - Wilhelm Stolz
- Department of Dermatology; Hospital Munich-Schwabing; Munich Germany
| | - Sigrid Karrer
- Department of Dermatology; University Hospital Regensburg; Regensburg Germany
| |
Collapse
|
28
|
Klein A, Rittmann I, Hiller KA, Landthaler M, Bäumler W. An Internet-based survey on characteristics of laser tattoo removal and associated side effects. Lasers Med Sci 2013; 29:729-38. [DOI: 10.1007/s10103-013-1395-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/08/2013] [Indexed: 12/24/2022]
|
29
|
Klein S, Schreml S, Dolderer J, Gehmert S, Niederbichler A, Landthaler M, Prantl L. Evidence-based topical management of chronic wounds according to the T.I.M.E. principle. J Dtsch Dermatol Ges 2013; 11:819-29. [PMID: 23848976 DOI: 10.1111/ddg.12138] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 04/24/2013] [Indexed: 01/19/2023]
Abstract
The number of patients suffering from chronic wound healing disorders in Germany alone is estimated to be 2.5-4 million. Therapy related expenses reach 5-8 billion Euros annually. This number is partially caused by costly dressing changes due to non-standardized approaches and the application of non-evidence-based topical wound therapies. The purpose of this paper is to elucidate a straightforward principle for the management of chronic wounds, and to review the available evidence for the particular therapy options. The T.I.M.E.-principle (Tissue management, Inflammation and infection control, Moisture balance, Epithelial [edge] advancement) was chosen as a systematic strategy for wound bed preparation. Literature was retrieved from the PubMed and Cochrane Library databases and subjected to selective analysis. Topical wound management should be carried out according to a standardized principle and should further be synchronized to the phases of wound healing. Despite the broad implementation of these products in clinical practice, often no benefit exists in the rate of healing, when evaluated in meta-analyses or systematic reviews. This insufficient evidence is additionally limited by varying study designs. In case of non-superiority, the results suggest to prefer relatively inexpensive wound dressings over expensive alternatives. Arbitrary endpoints to prove the effectiveness of wound dressings, contribute to the random use of such therapies. Defining rational endpoints for future studies as well as the deployment of structured therapy strategies will be essential for the economical and evidence-based management of chronic wounds.
Collapse
Affiliation(s)
- Silvan Klein
- Center for Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Germany
| | | | | | | | | | | | | |
Collapse
|
30
|
Affiliation(s)
- K M Meyer
- Department of Dermatology, University of Regensburg, Regensburg, Germany.
| | | | | | | |
Collapse
|
31
|
Schreml S, Weber BH, Schröder J, Siegmund H, Schaller J, Vogt T, Landthaler M, Schönbuchner I, Röcken C, Babilas P. Familial primary localized cutaneous amyloidosis with an oncostatin M receptor-β mutation, Pro694Leu. Clin Exp Dermatol 2013; 38:932-5. [DOI: 10.1111/ced.12160] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2013] [Indexed: 11/27/2022]
Affiliation(s)
- S. Schreml
- Department of Dermatology; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - B. H. Weber
- Institute of Human Genetics; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - J. Schröder
- Institute of Pathology; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - H. Siegmund
- Institute of Pathology; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - J. Schaller
- Laboratory for Dermatohistology; Duisburg Germany
| | - T. Vogt
- Department of Dermatology; Saarland University Hospital; Homburg/Saar Germany
| | - M. Landthaler
- Department of Dermatology; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - I. Schönbuchner
- Institute of Human Genetics; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| | - C. Röcken
- Institute of Pathology; University Medical Center Kiel; Kiel Germany
| | - P. Babilas
- Department of Dermatology; University Medical Center Regensburg; Franz-Josef-Strauss-Allee 11 93053 Regensburg Germany
| |
Collapse
|
32
|
Wenzel SM, Rittmann I, Landthaler M, Bäumler W. Adverse reactions after tattooing: review of the literature and comparison to results of a survey. Dermatology 2013; 226:138-47. [PMID: 23689478 DOI: 10.1159/000346943] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 12/24/2012] [Indexed: 11/19/2022] Open
Abstract
The number of tattooed people has substantially increased in the past years. Surveys in different countries reveal this to be up to 24% of the population. The number of reported adverse reactions after tattooing has also increased including infections, granulomatous and allergic reactions and tumors. However, the case reports do not reflect the frequency of adverse reactions. This review compares the medically documented adverse reactions published in 1991-2011 with the findings of a nation-wide survey that recently revealed the features and health problems associated with tattoos. To compare the data with the survey, the sex of patients was reported and the location and color of tattoos were evaluated. The results show clearly that colored tattoo inks are mainly responsible for adverse skin reactions and that tattoos on the extremities are involved most.
Collapse
Affiliation(s)
- Sabrina M Wenzel
- Department of Dermatology, University of Regensburg Medical Center, Regensburg, Germany
| | | | | | | |
Collapse
|
33
|
Klein A, Bäumler W, Buschmann M, Landthaler M, Babilas P. A Randomized Controlled Trial to Optimize Indocyanine Green-Augmented Diode Laser Therapy of Capillary Malformations. Lasers Surg Med 2013; 45:216-24. [DOI: 10.1002/lsm.22136] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Annette Klein
- Department of Dermatology; University Hospital Regensburg; Regensburg 93042 Germany
| | - Wolfgang Bäumler
- Department of Dermatology; University Hospital Regensburg; Regensburg 93042 Germany
| | - Marius Buschmann
- Department of Dermatology; University Hospital Regensburg; Regensburg 93042 Germany
| | - Michael Landthaler
- Department of Dermatology; University Hospital Regensburg; Regensburg 93042 Germany
| | - Philipp Babilas
- Department of Dermatology; University Hospital Regensburg; Regensburg 93042 Germany
| |
Collapse
|
34
|
Weiß KT, Karrer S, Landthaler M, Babilas P, Schreml S. Diet-induced pigmented purpuric dermatosis. Australas J Dermatol 2013; 55:e51-3. [PMID: 23574037 DOI: 10.1111/ajd.12038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Accepted: 12/14/2012] [Indexed: 11/28/2022]
Abstract
Pigmented purpuric dermatoses (PPD) are chronic and relapsing disorders characterised by a localised or generalised purpuric rash. Even though the clinical presentation of PPD subtypes varies, they have a similar histopathology. The aetiology is largely unknown, but trigger factors, such as drugs, infections and systemic illnesses have been described. To our knowledge, this is the only case showing widespread PPD lesions not only induced but also rapidly provoked by dietary factors, namely Coca Cola and apple-cherry fruit spritzer.
Collapse
Affiliation(s)
- Katharina T Weiß
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
| | | | | | | | | |
Collapse
|
35
|
Klein A, Steinert S, Baeumler W, Landthaler M, Babilas P. Photoepilation with a diode laser vs. intense pulsed light: a randomized, intrapatient left-to-right trial. Br J Dermatol 2013; 168:1287-93. [DOI: 10.1111/bjd.12182] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
36
|
Fritz K, Landthaler M. [Complications and undesired effects in aesthetic dermatology]. Hautarzt 2013; 64:144. [PMID: 23494092 DOI: 10.1007/s00105-012-2481-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Klaus Fritz
- Hautarztpraxis Landau, Reduitstr., 76829 Landau.
| | | |
Collapse
|
37
|
Groesser L, Vogt T, Happle R, Herschberger E, Mickler M, Landthaler M, Hafner C. Naevus marginatus revisited: a combined organoid and nonorganoid epidermal naevus caused byHRASmutation. Br J Dermatol 2013; 168:892-4. [DOI: 10.1111/bjd.12085] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
38
|
Schreml S, Meier RJ, Weiß KT, Cattani J, Flittner D, Gehmert S, Wolfbeis OS, Landthaler M, Babilas P. A sprayable luminescent pH sensor and its use for wound imagingin vivo. Exp Dermatol 2012; 21:951-3. [DOI: 10.1111/exd.12042] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2012] [Indexed: 12/11/2022]
Affiliation(s)
- Stephan Schreml
- Department of Dermatology; University Medical Center Regensburg; Regensburg; Germany
| | - Robert J. Meier
- Institute of Analytical Chemistry, Chemo- and Biosensors; University of Regensburg; Regensburg; Germany
| | - Katharina T. Weiß
- Department of Dermatology; University Medical Center Regensburg; Regensburg; Germany
| | - Julia Cattani
- Institute of Analytical Chemistry, Chemo- and Biosensors; University of Regensburg; Regensburg; Germany
| | - Dagmar Flittner
- Institute of Analytical Chemistry, Chemo- and Biosensors; University of Regensburg; Regensburg; Germany
| | - Sebastian Gehmert
- Department of Plastic Surgery; University Medical Center Regensburg; Regensburg; Germany
| | - Otto S. Wolfbeis
- Institute of Analytical Chemistry, Chemo- and Biosensors; University of Regensburg; Regensburg; Germany
| | - Michael Landthaler
- Department of Dermatology; University Medical Center Regensburg; Regensburg; Germany
| | - Philipp Babilas
- Department of Dermatology; University Medical Center Regensburg; Regensburg; Germany
| |
Collapse
|
39
|
Shum D, Bhinder B, Ramirez CN, Radu C, Calder PA, Beauchamp L, Farazi T, Landthaler M, Tuschi T, Magdaleno S, Djaballah H. An arrayed RNA interference genome-wide screen identifies candidate genes involved in the MicroRNA 21 biogenesis pathway. Assay Drug Dev Technol 2012; 11:191-205. [PMID: 23153064 DOI: 10.1089/adt.2012.477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs (miRNAs) are evolutionary conserved noncoding molecules that regulate gene expression. They influence a number of diverse biological functions, such as development and differentiation. However, their dysregulation has been shown to be associated with disease states, such as cancer. Genes and pathways regulating their biogenesis remain unknown and are highly sought after. For this purpose, we have validated a multiplexed high-content assay strategy to screen for such modulators. Here, we describe its implementation that makes use of a cell-based gain-of-function reporter assay monitoring enhanced green fluorescent protein expression under the control of miRNA 21 (miR-21); combined with measures of both cell metabolic activities through the use of Alamar Blue and cell death through imaged Hoechst-stained nuclei. The strategy was validated using a panel of known genes and enabled us to successfully progress to and complete an arrayed genome-wide short interfering RNA (siRNA) screen against the Ambion Silencer Select v4.0 library containing 64,755 siRNA duplexes covering 21,565 genes. We applied a high-stringency hit analysis method, referred to as the Bhinder-Djaballah analysis method, leading to the nomination of 1,273 genes as candidate inhibitors of the miR-21 biogenesis pathway; after several iterations eliminating those genes with only one active duplex and those enriched in seed sequence mediated off-target effects. Biological classifications revealed four major control junctions among them vesicular transport via clathrin-mediated endocytosis. Altogether, our screen has uncovered a number of novel candidate regulators that are potentially good druggable targets allowing for the discovery and development of small molecules for regulating miRNA function.
Collapse
Affiliation(s)
- David Shum
- High-Throughput Screening Core Facility, Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
|
41
|
Grob JJ, Jouary T, Dréno B, Asselineau J, Gutzmer R, Hauschild A, Leccia MT, Landthaler M, Garbe C, Sassolas B, Herbst RA, Guillot B, Chene G, Pehamberger H. Adjuvant therapy with pegylated interferon alfa-2b (36 months) versus low-dose interferon alfa-2b (18 months) in melanoma patients without macrometastatic nodes: an open-label, randomised, phase 3 European Association for Dermato-Oncology (EADO) study. Eur J Cancer 2012; 49:166-74. [PMID: 22975216 DOI: 10.1016/j.ejca.2012.07.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 07/08/2012] [Indexed: 11/15/2022]
Abstract
AIM Both low-dose interferon (IFN) alfa-2b and pegylated interferon (Peg-IFN) alfa-2b have been shown to be superior to observation in the adjuvant treatment of melanoma without macrometastatic nodes, but have never been directly compared. Peg-IFN facilitates prolongation of treatment, which could provide additional benefit. This multicentre, open-label, randomised, phase 3 trial compared standard low-dose interferon IFN and prolonged treatment with Peg-IFN. PATIENTS AND METHODS Patients with resected melanoma ≥1.5mm thick and without clinically detectable node metastases were randomised 1:1 to treatment with IFN 3 MU subcutaneously (SC) three times weekly for 18 months or Peg-IFN 100 μg SC once weekly for 36 months. Sentinel lymph node dissection (SLND) was optional. The primary endpoint was disease-free survival (DFS). Secondary endpoints included distant metastasis-free survival (DMFS), overall survival (OS) and adverse events (AEs) grade 3-4. RESULTS Of 898 patients enrolled, 896 (443 Peg-IFN, 453 IFN) were eligible for evaluation (median follow-up 4.7 years). SLND was performed in 68.2% of patients. There were no statistical differences between the two arms for the primary outcome of DFS (hazard ratio [HR] 0.91, 95% confidence interval [CI] 0.73-1.15) or the secondary outcomes of DMFS (HR 1.02, 95% CI 0.80-1.32) and OS (HR 1.09, 95% CI 0.82-1.45). Peg-IFN was associated with higher rates of grade 3-4 AEs (47.3% versus 25.2%; p<0.0001) and discontinuations (54.3% versus 30.4%) compared with IFN. CONCLUSION This trial did not show superiority for adjuvant Peg-IFN over conventional low-dose IFN in melanoma patients without clinically detectable nodes. ClinicalTrials.gov identifier: NCT00221702.
Collapse
Affiliation(s)
- Jean Jacques Grob
- Aix-Marseille University, CRO2, Service de Dermatologie, Hopital de Timone, 264 Rue St Pierre, 13885 Marseille CEDEX 05, Marseille, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Hafner C, Toll A, Gantner S, Mauerer A, Lurkin I, Acquadro F, Fernández-Casado A, Zwarthoff EC, Dietmaier W, Baselga E, Parera E, Vicente A, Casanova A, Cigudosa J, Mentzel T, Pujol RM, Landthaler M, Real FX. Keratinocytic epidermal nevi are associated with mosaic RAS mutations. J Med Genet 2012; 49:249-53. [PMID: 22499344 DOI: 10.1136/jmedgenet-2011-100637] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Activating RAS mutations in the germline cause rare developmental disorders such as Costello syndrome. Somatic RAS mutations are found in approximately 30% of human cancers. Keratinocytic epidermal nevi (KEN) represent benign congenital skin lesions arranged along Blaschko's lines. A subgroup of KEN is caused by hotspot oncogenic FGFR3 and PIK3CA mutations in mosaicism, but the majority lack these mutations. METHODS This study screened 72 KEN for activating mutations in RAS genes and other oncogenes. RESULTS Activating RAS mutations were identified in 28/72 (39%) of KEN. HRAS was the most commonly affected oncogene (86%), with the HRAS p.G13R substitution representing a new hotspot mutation. CONCLUSION These results indicate that activating RAS somatic mutations leading to mosaicism result in benign KEN of the skin. Given the prevalence of KEN, mosaic HRAS mutations appear to be more common in patients than germline ones. These findings identify KEN as a mosaic RASopathy and lend further support to the notion that genetic mosaicism is an important contributor to disease.
Collapse
Affiliation(s)
- Christian Hafner
- Department of Dermatology, University of Regensburg, Regensburg, Germany.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Klein A, Szeimies RM, Bäumler W, Zeman F, Schreml S, Hohenleutner U, Landthaler M, Koller M, Babilas P. Indocyanine green-augmented diode laser treatment of port-wine stains: clinical and histological evidence for a new treatment option from a randomized controlled trial. Br J Dermatol 2012; 167:333-42. [PMID: 22435991 DOI: 10.1111/j.1365-2133.2012.10950.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Complete clearance of port-wine stains (PWS) is difficult to achieve, mainly because of the resistance of small blood vessels to laser irradiation. Indocyanine green (ICG)-augmented diode laser treatment (ICG+DL) may overcome this problem. OBJECTIVES To evaluate the feasibility of ICG+DL therapy of PWS and to compare the safety and efficacy of ICG+DL with the standard treatment, flashlamp-pumped pulsed dye laser (FPDL). METHODS In a prospective randomized controlled clinical study, 31 patients with PWS were treated with FPDL (λ(em)=585 nm, 6 J cm(-2) , 0.45 ms pulse duration) and ICG+DL (λ(em)=810 nm, 20-50 J cm(-2) , 10-25 ms pulse duration, ICG-concentration: 2 mg kg(-1) body weight) in a split-face modus in one single treatment setting that included histological examination (haematoxylin and eosin, CD34). Two blinded investigators and the patients assessed clearance rate, cosmetic appearance and side-effects up to 3 months after treatment. RESULTS ICG+DL therapy induced photocoagulation of medium and large blood vessels (>20 μm diameter) but not of small blood vessels. According to the investigators' assessment, clearance rates and cosmetic appearance were better after ICG+DL therapy than after FPDL treatment (P=0.114, P=0.291, respectively), although not up to a statistically significant level, whereas patients considered these parameters superior (P=0.003, P=0.006, respectively). On a 10-point scale indicating pain during treatment, patients rated ICG+DL to be more painful (5.81 ± 2.12) than FPDL treatment (1.61 ± 1.84). CONCLUSION ICG+DL represents a new and promising treatment modality for PWS, but laser parameters and ICG concentration need to be further optimized.
Collapse
Affiliation(s)
- A Klein
- Department of Dermatology, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Isbary G, Heinlin J, Shimizu T, Zimmermann JL, Morfill G, Schmidt HU, Monetti R, Steffes B, Bunk W, Li Y, Klaempfl T, Karrer S, Landthaler M, Stolz W. Successful and safe use of 2 min cold atmospheric argon plasma in chronic wounds: results of a randomized controlled trial. Br J Dermatol 2012; 167:404-10. [PMID: 22385038 PMCID: PMC7161860 DOI: 10.1111/j.1365-2133.2012.10923.x] [Citation(s) in RCA: 239] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background The development of antibiotic resistance by microorganisms is an increasing problem in medicine. In chronic wounds, bacterial colonization is associated with impaired healing. Cold atmospheric plasma is an innovative promising tool to deal with these problems. Objectives The 5‐min argon plasma treatment has already demonstrated efficacy in reducing bacterial numbers in chronic infected wounds in vivo. In this study we investigated a 2‐min plasma treatment with the same device and the next‐generation device, to assess safety and reduction in bacterial load, regardless of the kind of bacteria and their resistance level in chronic wounds. Methods Twenty‐four patients with chronic infected wounds were treated in a prospective randomized controlled phase II study with 2 min of cold atmospheric argon plasma every day: 14 with MicroPlaSter alpha device, 10 with MicroPlaSter beta device (next‐generation device) in addition to standard wound care. The patient acted as his/her own control. Bacterial species were detected by standard bacterial swabs and bacterial load by semiquantitative count on nitrocellulose filters. The plasma settings were the same as in the previous phase II study in which wounds were exposed for 5 min to argon plasma. Results Analysis of 70 treatments in 14 patients with the MicroPlaSter alpha device revealed a significant (40%, P < 0·016) reduction in bacterial load in plasma‐treated wounds, regardless of the species of bacteria. Analysis of 137 treatments in 10 patients with the MicroPlaSter beta device showed a highly significant reduction (23·5%, P < 0·008) in bacterial load. No side‐effects occurred and the treatment was well tolerated. Conclusions A 2‐min treatment with either of two cold atmospheric argon plasma devices is a safe, painless and effective technique to decrease the bacterial load in chronic wounds.
Collapse
Affiliation(s)
- G Isbary
- Department of Dermatology, Allergology and Environmental Medicine, Hospital Munich Schwabing, Koelner Platz 1, D-80804 Munich, Germany.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Groesser L, Herschberger E, Ruetten A, Ruivenkamp C, Lopriore E, Zutt M, Langmann T, Singer S, Klingseisen L, Schneider-Brachert W, Toll A, Real FX, Landthaler M, Hafner C. Postzygotic HRAS and KRAS mutations cause nevus sebaceous and Schimmelpenning syndrome. Nat Genet 2012; 44:783-7. [DOI: 10.1038/ng.2316] [Citation(s) in RCA: 212] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 05/08/2012] [Indexed: 12/14/2022]
|
46
|
Bäumler W, Paasch U, Klein A, Landthaler M, Friedman R, Shafirstein G. Intravenous injection of indocyanine green to enhance laser-assisted coagulation of blood vessels in skin - an animal study. J Eur Acad Dermatol Venereol 2012; 27:e206-11. [DOI: 10.1111/j.1468-3083.2012.04588.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
47
|
Abstract
Based on the theory of stimulated emission of radiation that was proposed by Albert Einstein in 1916, the first lasers were developed in the 1960s. The first clinical use of laser technology in a German university took place in 1978 in the Department of Dermatology of the Ludwig-Maximilian-University in Munich under the guidance of the former director, Prof. Dr. med. Dr. h.c. mult. Otto Braun-Falco. In the following years, laser technology developed rapidly. Today laser technology is a widely used interdisciplinary therapeutic procedure that has deep clinical and scientific roots in dermatology. There are many conditions in both classic and aesthetic dermatology that are routinely - and sometimes exclusively - treated with lasers. Here we review recent developments in laser medicine. There seems to be a trend to combination procedures. To enhance efficacy, different laser systems are together or lasers are combined with specific topical medications.
Collapse
Affiliation(s)
- P Babilas
- Klinik und Poliklinik für Dermatologie, Universitätsklinikum Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Deutschland.
| | | |
Collapse
|
48
|
Klein A, Bäumler W, Koller M, Shafirstein G, Kohl EA, Landthaler M, Babilas P. Indocyanine green-augmented diode laser therapy of telangiectatic leg veins: A randomized controlled proof-of-concept trial. Lasers Surg Med 2012; 44:369-76. [DOI: 10.1002/lsm.22022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2012] [Indexed: 11/06/2022]
|
49
|
Abstract
BACKGROUND Benign lichenoid keratoses (BLKs) are solitary skin lesions which have been proposed to represent a regressive form of pre-existent epidermal tumours such as solar lentigo or seborrhoeic keratosis. However, the genetic basis of BLK is unknown. OBJECTIVES FGFR3, PIK3CA and RAS mutations have been shown to be involved in the pathogenesis of seborrhoeic keratosis and solar lentigo. We thus investigated whether these mutations are also present in BLK. METHODS After manual microdissection and DNA isolation, 52 BLKs were screened for FGFR3, PIK3CA and RAS hotspot mutations using SNaPshot(®) multiplex assays. RESULTS We identified 6/52 (12%) FGFR3 mutations, 10/52 (19%) PIK3CA mutations, 6/52 (12%) HRAS mutations and 2/52 (4%) KRAS mutations. FGFR3 and RAS mutations were mutually exclusive. One BLK showed a simultaneous PIK3CA and HRAS mutation. In nine BLKs with a mutation, nonlesional control tissue from the epidermal margin and the dermal lymphocytic infiltrate were wild-type, indicating that these mutations are somatic. To demonstrate that these findings are specific, 10 samples of lichen planus were analysed without evidence for FGFR3, PIK3CA or RAS mutations. CONCLUSIONS Our results indicate that FGFR3, PIK3CA and RAS mutations are present in approximately 50% of BLKs. These findings support the concept on the molecular genetic level that at least a proportion of BLKs represents regressive variants resulting from former benign epidermal tumours such as seborrhoeic keratosis and solar lentigo.
Collapse
Affiliation(s)
- L Groesser
- Department of Dermatology, University of Regensburg, Regensburg, Germany.
| | | | | | | |
Collapse
|
50
|
Abstract
We present a 15-year-old female patient with a 6-month history of recurrent painful petechiae on the fingers and feet. Trauma or pressure were denied, but she reported recurrent tonsillitis and urinary tract infections and a single event of bilateral scotoma. Extensive investigations (e.g., echocardiography) for a suspected diagnosis of septic emboli were unremarkable. Routine histopathology, direct and indirect immunofluorescence, and esophagogastroduodenoscopy led to the diagnosis of dermatitis herpetiformis. The therapeutic strategy comprised gluten-free diet and dapsone to alleviate the symptoms. Dermatitis herpetiformis should be included in the differential diagnosis of palmar or plantar petechiae, especially when occurring in children or young adults.
Collapse
Affiliation(s)
- Julia Heinlin
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | | | | | | | | |
Collapse
|