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Influence of regression, its extent and tumor-infiltrating lymphocytes on sentinel node status, relapse, and survival in a 10-year retrospective study of melanoma patients. Melanoma Res 2024:00008390-990000000-00141. [PMID: 38564432 DOI: 10.1097/cmr.0000000000000970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
This case-control study seeks to investigate the influence of histological findings, specifically regression, its extent and tumor-infiltrating lymphocyte (TILs), on result of sentinel lymph node (SLN) biopsy, 5-year melanoma-specific survival (MSS), and relapse-free survival (RFS). We included all patients with cutaneous melanoma who underwent SLN biopsy at the Melanoma Center of the University of Brescia, following the Italian Association of Medical Oncology National guidelines from January 2008 to August 2018. Regression and its extent (<75 or ≥75%) and the presence of TILs were reevaluated by a trained dermatopathologist, adhering to the 2017 College of American Pathologists Cancer Protocol for Skin Melanoma. These patients were followed up for 5 years. Our study uncovered significant associations between regression and male sex ( P < 0.05), melanoma location on the trunk, upper limbs, and back ( P = 0.001), ulceration ( P < 0.05), lower Breslow thickness ( P = 0.001), and the presence of lymphocytic infiltration (both brisk and nonbrisk) ( P < 0.001). Regression and its extent, however, did not appear to affect SLN positivity ( P = 0.315). Similarly, our data did not reveal a correlation between TILs and result of SLN biopsy ( P = 0.256). When analyzing MSS and RFS in relation to the presence or absence of regression and TILs, no statistically significant differences were observed, thus precluding the need for logistic regression and Kaplan-Meier curve analysis. This study's findings underscore that regression and TILs do not appear to exert an influence on sentinel lymph node status,, MSS, or RFS in our cohort of patients.
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A new case of amyloid elastosis - dermoscopic findings and literature review. Int J Dermatol 2024; 63:679-681. [PMID: 38379360 DOI: 10.1111/ijd.17089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 01/31/2024] [Indexed: 02/22/2024]
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3
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Spitz nevus puzzle: Red ink tattoo unveiling rare plexiform variants. Australas J Dermatol 2024; 65:300-302. [PMID: 38504450 DOI: 10.1111/ajd.14253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/23/2024] [Accepted: 03/09/2024] [Indexed: 03/21/2024]
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4
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A case of isolated cutaneous crystal-storing histiocytosis with its dermatoscopic findings. J Eur Acad Dermatol Venereol 2024; 38:e362-e363. [PMID: 38041573 DOI: 10.1111/jdv.19659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/14/2023] [Indexed: 12/03/2023]
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5
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Efficacy of upadacitinib in a case of resistant lupus erythematosus tumidus. J Eur Acad Dermatol Venereol 2024; 38:e335-e336. [PMID: 37909064 DOI: 10.1111/jdv.19604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/25/2023] [Indexed: 11/02/2023]
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6
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Sexual quality of life in patients with pemphigus: A case-control study. J Eur Acad Dermatol Venereol 2024; 38:761-768. [PMID: 38071729 DOI: 10.1111/jdv.19695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/25/2023] [Indexed: 03/26/2024]
Abstract
BACKGROUND Pemphigus, an autoimmune blistering disease that affects the skin and mucous membranes, significantly impairs the quality of life (QoL) of affected individuals. While there are a variety of QoL measurement tools available for assessing this disease, there is a lack of studies that specifically evaluate the sexual QoL of patients with pemphigus. OBJECTIVES This case-control study aims to investigate the impact of the disease on sexual activity as well as its overall effect on QoL. MATERIALS AND METHODS Fifty pemphigus patients, who were referred to the Dermatology Department at the University Hospital of Brescia in the period March 2019-September 2021, completed several QoL surveys, including the 36-item Short Form Health survey (SF-36), the 12-Item General Health Questionnaire (GHQ-12), the Autoimmune Bullous Disease Quality of Life (ABQOL) and either the International Index of Erectile Function (IIEF) or the Female Sexual Function Index (FSFI). The severity of the disease was assessed using the Pemphigus Disease Area Index (PDAI). Differences in QoL surveys between the case and control groups were analysed using either the t-test or the Wilcoxon-Mann-Whitney test. The correlation between QoL surveys in pemphigus patients and disease severity were analysed using Spearman's coefficient (r). RESULTS The results revealed a marked impairment in overall QoL among patients with pemphigus compared to the healthy control subjects. Significant differences were observed in various domains of QoL, including physical health, mental well-being, social functioning and, notably, sexual health. Furthermore, disease severity as evaluated by the PDAI showed correlations with specific aspects of health status, and disease-specific QoL demonstrated associations with nearly all domains of health status. No significant correlations were found between sexual activity, mucosal involvement or steroid therapy and PDAI scores or disease-specific QoL measures. CONCLUSION These findings emphasize the significant impact of pemphigus on patients' well-being, with particular attention to the impaired sexual activity.
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Bimekizumab for the Treatment of Plaque Psoriasis With Involvement of Genitalia: A 16-Week Multicenter Real-World Experience - IL PSO (Italian Landscape Psoriasis). Dermatol Pract Concept 2024:dpc.1402a52. [PMID: 38416060 DOI: 10.5826/dpc.1402a52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2024] [Indexed: 02/29/2024] Open
Abstract
INTRODUCTION Genital involvement is observed in approximately 60% of patients with psoriasis, presenting clinicians with formidable challenges in treatment. While new biologic drugs have emerged as safe and effective options for managing psoriasis, their efficacy in challenging-to-treat areas remains inadequately explored. Intriguingly, studies have shown that interleukin (IL)-17 inhibitors exhibit effectiveness in addressing genital psoriasis. OBJECTIVES We aimed to determine the effectiveness profile of bimekizumab in patients affected by moderate-to-severe plaque psoriasis with involvement of genitalia. METHODS Bimekizumab, a dual inhibitor of both IL-17A and IL-17F, was the focus of our 16-week study, demonstrating highly favorable outcomes for patients with genital psoriasis. The effectiveness of bimekizumab was evaluated in terms of improvement in Static Physician's Global Assessment of Genitalia (sPGA-G) and Psoriasis Area and Severity Index. RESULTS Sixty-five adult patients were enrolled. Remarkably, 98.4% of our participants achieved a clear sPGA-G score (s-PGA-g=0) within 16 weeks. Moreover, consistent improvements were observed in PASI scores, accompanied by a significant reduction in the mean Dermatology Life Quality Index (DLQI), signifying enhanced quality of life. Notably, none of the patients reported a severe impairment in their quality of life after 16 weeks of treatment. In our cohort of 65 patients, subgroup analyses unveiled that the effectiveness of bimekizumab remained unaffected by prior exposure to other biologics or by obesity. CONCLUSIONS Our initial findings suggest that bimekizumab may serve as a valuable treatment option for genital psoriasis. Nevertheless, further research with larger sample sizes and longer-term follow-up is imperative to conclusively validate these results.
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A case of refractory amyopathic dermatomyositis successfully treated with upadacitinib. Int J Dermatol 2024. [PMID: 38504645 DOI: 10.1111/ijd.17135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/21/2024]
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Line-field confocal optical coherence tomography: A new in vivo assessment tool for cutaneous mycosis fungoides. J Eur Acad Dermatol Venereol 2024; 38:e296-e298. [PMID: 37983937 DOI: 10.1111/jdv.19633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/10/2023] [Indexed: 11/22/2023]
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10
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Successful treatment of scleromyxedema with daratumumab, lenalidomide and dexamethasone in a patient with multiple myeloma. Australas J Dermatol 2024. [PMID: 38326991 DOI: 10.1111/ajd.14218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/21/2023] [Accepted: 01/26/2024] [Indexed: 02/09/2024]
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11
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Line-Field Confocal Optical Coherence Tomography of a Suspected Case of Galli-Galli Disease. Dermatol Pract Concept 2024; 14:dpc.1401a7. [PMID: 38364408 PMCID: PMC10868917 DOI: 10.5826/dpc.1401a7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2023] [Indexed: 02/18/2024] Open
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Successful Treatment of Recalcitrant Subcorneal Pustular Dermatosis (Sneddon-Wilkinson Diseases) With Apremilast. Dermatol Pract Concept 2024; 14:dpc.1401a35. [PMID: 38364407 PMCID: PMC10868887 DOI: 10.5826/dpc.1401a35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2023] [Indexed: 02/18/2024] Open
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13
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A case of rosacea fulminans during pregnancy. J Dtsch Dermatol Ges 2023; 21:1399-1403. [PMID: 37814397 DOI: 10.1111/ddg.15193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 06/22/2023] [Indexed: 10/11/2023]
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14
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Ein Fall von Rosazea fulminans während der Schwangerschaft. J Dtsch Dermatol Ges 2023; 21:1399-1404. [PMID: 37946639 DOI: 10.1111/ddg.15193_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 06/22/2023] [Indexed: 11/12/2023]
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15
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A case of recurrence of pyoderma gangrenosum after COVID-19 vaccine. J Eur Acad Dermatol Venereol 2023; 37:e1261-e1263. [PMID: 37338337 DOI: 10.1111/jdv.19285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/15/2023] [Indexed: 06/21/2023]
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16
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Effectiveness and safety of bimekizumab for the treatment of plaque psoriasis: a real-life multicenter study-IL PSO (Italian landscape psoriasis). Front Med (Lausanne) 2023; 10:1243843. [PMID: 37614958 PMCID: PMC10442506 DOI: 10.3389/fmed.2023.1243843] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 07/27/2023] [Indexed: 08/25/2023] Open
Abstract
Introduction Bimekizumab is a monoclonal antibody that targets Interleukin-17 A and F, approved for the treatment of moderate-to-severe plaque psoriasis. While bimekizumab has been evaluated in several phase-III clinical trials, real-world evidence is still very limited. Method This multicenter retrospective study included patients affected by plaque psoriasis treated with bimekizumab from May 1, 2022 to April 30, 2023, at 19 Italian referral hospitals. Patients affected by moderate-to-severe plaque psoriasis eligible for systemic treatments were included. The effectiveness of bimekizumab was evaluated in terms of reduction in psoriasis area and severity index (PASI) compared with baseline at weeks 4 and 16. The main outcomes were the percentages of patients achieving an improvement of at least 75% (PASI75), 90% (PASI90) and 100% (PASI100) in PASI score. Results The study included 237 patients who received at least one injection of bimekizumab. One hundred and seventy-one patients and 114 reached four and 16 weeks of follow-up, respectively. Complete skin clearance was achieved by 43.3% and 75.4% of patients at weeks 4 and 16, respectively. At week 16, 86.8% of patients reported no impact on their quality of life. At week 16, there were no significant differences between bio-naïve and bio-experienced patients in terms of PASI75, PASI90 and PASI100. The most commonly reported adverse events (AEs) were oral candidiasis (10.1%). No severe AEs or AEs leading to discontinuation were observed throughout the study. Conclusion Our experience supports the effectiveness and tolerability of bimekizumab in a real-world setting with similar results compared with phase-III clinical trials.
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The role of line-field confocal optical coherence tomography (LC-OCT) in the diagnosis of eccrine poroma: A case report. Australas J Dermatol 2023; 64:e216-e219. [PMID: 37154231 DOI: 10.1111/ajd.14070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/04/2023] [Accepted: 04/23/2023] [Indexed: 05/10/2023]
Abstract
Poroma is skin cancer that arises from the sweat gland cells. Its diagnosis could be difficult. Line-field optical coherence tomography (LC-OCT) is a novel imaging technique that has shown promise in the diagnosis and monitoring of various skin conditions. We report a case of poroma diagnosed by LC-OCT.
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Surgical margin mapping for lentigo maligna and lentigo maligna melanoma: traditional technique (visual inspection with dermoscopy) versus combined paper tape and reflectance confocal microscopy technique. Int J Dermatol 2023; 62:805-811. [PMID: 37073872 DOI: 10.1111/ijd.16688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 02/05/2023] [Accepted: 04/02/2023] [Indexed: 04/20/2023]
Abstract
BACKGROUND The detection of subclinical margin in lentigo maligna/lentigo maligna melanoma (LM/LMM) can be challenging for the dermatologist. Reflectance confocal microscopy (RCM) enables to observe in vivo atypical melanocytes beyond the clinical margins. The aim of this study is to establish which of these methods (clinical examination and dermoscopy versus "Paper tape - RCM") is more precise to define the lesion margin and to reduce the number of re-intervention and overtreatments in cosmetically sensitive areas. METHODS Fifty-seven cases of LM/LMM were analyzed during 2016-2022. Pre-surgical mapping procedures in 32 lesions were effectuated with dermatoscopy. Furthermore, pre-surgical mapping procedures in 25 lesions were effectuated with RCM and paper tape. RESULTS RCM method's accuracy to detect subclinical margins was 92.0%. In 24 of 25 cases, the lesions were excised completely during the first intervention. In 20 of 32 cases analyzed with dermoscopy, a second surgical intervention was effectuated. CONCLUSION The RCM paper method allows us to delineate subclinical margin more accurately and reduce overtreatment, especially in sensitive areas, such as the face and neck.
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"Dot in a Circle": a Useful Ultrasound Finding for a Rapid Diagnosis of Mycetoma. Dermatol Pract Concept 2023; 13:dpc.1302a102. [PMID: 37196273 DOI: 10.5826/dpc.1302a102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2022] [Indexed: 05/19/2023] Open
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Dermatoscopy of Bednar Tumor: New Case and Review of Literature. Dermatol Pract Concept 2023; 13:dpc.1302a117. [PMID: 37196270 DOI: 10.5826/dpc.1302a117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2023] [Indexed: 05/19/2023] Open
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21
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Efficacy of apremilast in a case of resistant linear IgA bullous disease. Int J Dermatol 2022; 62:e300-e302. [PMID: 36468775 DOI: 10.1111/ijd.16548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/15/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022]
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22
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Phacomatosis pigmentovascularis spilorosea mit Mutation im PTPN11 Gen: neuer Fall mit erheblichen neurologischen Beeinträchtigungen. J Dtsch Dermatol Ges 2022; 20:1133-1136. [PMID: 35971585 DOI: 10.1111/ddg.14786_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Crab claw island pedicle flap for repair of lateral forehead and upper eyelid defect. Dermatol Ther 2022; 35:e15721. [PMID: 35855537 DOI: 10.1111/dth.15721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/02/2022] [Accepted: 07/16/2022] [Indexed: 11/29/2022]
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Phacomatosis pigmentovascularis spilorosea and mutation in the PTPN11 gene: new case with significant neurologic impairment. J Dtsch Dermatol Ges 2022; 20:1133-1136. [PMID: 35698861 DOI: 10.1111/ddg.14786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Adalimumab for interleukin-1β-mediated chronic non-scarring scalp folliculitis: Case report and literature review. J Dermatol 2021; 49:157-160. [PMID: 34472127 DOI: 10.1111/1346-8138.16106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/27/2021] [Accepted: 07/25/2021] [Indexed: 11/29/2022]
Abstract
Chronic non-scarring scalp folliculitis is a little-known entity included within the spectrum of scalp folliculitis, a group of diseases sharing clinical features but with heterogeneity in terms of residual scarring (always absent in chronic non-scarring scalp folliculitis), microbiology, and response to antibiotics. Chronic non-scarring scalp folliculitis is most likely an inflammatory disease within the group of neutrophilic dermatoses. The recognition of the inflammatory nature of this disease may pave the way for the use of new therapies, directly targeting pathogenic molecules. Herein, we report the first case of chronic non-scarring scalp folliculitis treated by adalimumab.
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Flagellate erythema as sign of paraneoplastic dermatomyositis. Rheumatology (Oxford) 2021; 60:2009. [PMID: 33118026 DOI: 10.1093/rheumatology/keaa676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 09/24/2020] [Indexed: 11/12/2022] Open
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Eosinophilic fasciitis induced by natalizumab in a patient affected by multiple sclerosis. Indian J Dermatol Venereol Leprol 2021; 87:146. [PMID: 33580935 DOI: 10.25259/ijdvl_259_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 08/01/2020] [Indexed: 11/04/2022]
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The clinical spectrum of COVID-19-associated cutaneous manifestations: An Italian multicenter study of 200 adult patients. J Am Acad Dermatol 2021; 84:1356-1363. [PMID: 33476725 PMCID: PMC7816892 DOI: 10.1016/j.jaad.2021.01.023] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 12/10/2020] [Accepted: 01/06/2021] [Indexed: 01/23/2023]
Abstract
BACKGROUND COVID-19 is associated with a wide range of skin manifestations. OBJECTIVE To describe the clinical characteristics of COVID-19-associated skin manifestations and explore the relationships among the 6 main cutaneous phenotypes and systemic findings. METHODS Twenty-one Italian Dermatology Units were asked to collect the demographic, clinical, and histopathologic data of 200 patients with COVID-19-associated skin manifestations. The severity of COVID-19 was classified as asymptomatic, mild, moderate, or severe. RESULTS A chilblain-like acral pattern was significantly associated with a younger age (P < .0001) and, after adjusting for age, significantly associated with less severe COVID-19 (P = .0009). However, the median duration of chilblain-like lesions was significantly longer than that of the other cutaneous manifestations taken together (P < .0001). Patients with moderate/severe COVID-19 were more represented than those with asymptomatic/mild COVID-19 among the patients with cutaneous manifestations other than chilblain-like lesions, but only the confluent erythematous/maculo-papular/morbilliform phenotype was significantly associated with more severe COVID-19 (P = .015), and this significance disappeared after adjustment for age. LIMITATIONS Laboratory confirmation of COVID-19 was not possible in all cases. CONCLUSIONS After adjustment for age, there was no clear-cut spectrum of COVID-19 severity in patients with COVID-19-related skin manifestations, although chilblain-like acral lesions were more frequent in younger patients with asymptomatic/pauci-symptomatic COVID-19.
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A case of PASH syndrome associated to testicular cancer. Dermatol Ther 2021; 34:e14763. [PMID: 33405308 DOI: 10.1111/dth.14763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/14/2020] [Accepted: 12/30/2020] [Indexed: 11/30/2022]
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Understanding Docking Complexes of Macromolecules Using HADDOCK: The Synergy between Experimental Data and Computations. Bio Protoc 2020; 10:e3793. [PMID: 33659447 PMCID: PMC7842552 DOI: 10.21769/bioprotoc.3793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 08/17/2020] [Accepted: 09/01/2020] [Indexed: 11/02/2022] Open
Abstract
This protocol illustrates the modelling of a protein-peptide complex using the synergic combination of in silico analysis and experimental results. To this end, we use the integrative modelling software HADDOCK, which possesses the powerful ability to incorporate experimental data, such as NMR Chemical Shift Perturbations and biochemical protein-peptide interaction data, as restraints to guide the docking process. Based on the modelling results, a rational mutagenesis approach is used to validate the generated models. The experimental results allow to select a final structural model best representing the bona fide protein-peptide complex. The described protocol can also be applied to model protein-protein complexes. There is no size limit for the macromolecular complexes that can be characterized by HADDOCK as long as the 3D structures of the individual components are available.
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Erfolgreiche Therapie eines refraktären eosinophilen anulären Erythems mit
Dupilumab. J Dtsch Dermatol Ges 2020; 18:1031-1033. [PMID: 32985820 DOI: 10.1111/ddg.14254_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Refractory eosinophilic annular erythema treated successfully with dupilumab. J Dtsch Dermatol Ges 2020; 18:1031-1032. [PMID: 32909389 DOI: 10.1111/ddg.14254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Anaerobic infection simulating necrotizing fasciitis, induced by liposuction for surgical treatment of siliconoma. Dermatol Ther 2020; 33:e13583. [PMID: 32410308 DOI: 10.1111/dth.13583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 05/12/2020] [Indexed: 11/27/2022]
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34
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Porocarcinoma From Preexisting Hidroacanthoma Simplex: Dermoscopic Findings. Dermatol Pract Concept 2020; 10:e2020036. [PMID: 32363098 DOI: 10.5826/dpc.1002a36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2019] [Indexed: 10/31/2022] Open
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CIAO3 protein forms a stable ternary complex with two key players of the human cytosolic iron–sulfur cluster assembly machinery. J Biol Inorg Chem 2020; 25:501-508. [DOI: 10.1007/s00775-020-01778-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 03/16/2020] [Indexed: 11/24/2022]
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36
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A Morel‐Lavallée lesion simulating acute bacterial skin infection. Australas J Dermatol 2019; 60:e243-e244. [DOI: 10.1111/ajd.13005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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A signalling cascade involving receptor-activated phospholipase A 2, glycerophosphoinositol 4-phosphate, Shp1 and Src in the activation of cell motility. Cell Commun Signal 2019; 17:20. [PMID: 30823936 PMCID: PMC6396489 DOI: 10.1186/s12964-019-0329-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 02/13/2019] [Indexed: 12/28/2022] Open
Abstract
Background Shp1, a tyrosine-phosphatase-1 containing the Src-homology 2 (SH2) domain, is involved in inflammatory and immune reactions, where it regulates diverse signalling pathways, usually by limiting cell responses through dephosphorylation of target molecules. Moreover, Shp1 regulates actin dynamics. One Shp1 target is Src, which controls many cellular functions including actin dynamics. Src has been previously shown to be activated by a signalling cascade initiated by the cytosolic-phospholipase A2 (cPLA2) metabolite glycerophosphoinositol 4-phosphate (GroPIns4P), which enhances actin polymerisation and motility. While the signalling cascade downstream Src has been fully defined, the mechanism by which GroPIns4P activates Src remains unknown. Methods Affinity chromatography, mass spectrometry and co-immunoprecipitation studies were employed to identify the GroPIns4P-interactors; among these Shp1 was selected for further analysis. The specific Shp1 residues interacting with GroPIns4P were revealed by NMR and validated by site-directed mutagenesis and biophysical methods such as circular dichroism, isothermal calorimetry, fluorescence spectroscopy, surface plasmon resonance and computational modelling. Morphological and motility assays were performed in NIH3T3 fibroblasts. Results We find that Shp1 is the direct cellular target of GroPIns4P. GroPIns4P directly binds to the Shp1-SH2 domain region (with the crucial residues being Ser 118, Arg 138 and Ser 140) and thereby promotes the association between Shp1 and Src, and the dephosphorylation of the Src-inhibitory phosphotyrosine in position 530, resulting in Src activation. As a consequence, fibroblast cells exposed to GroPIns4P show significantly enhanced wound healing capability, indicating that GroPIns4P has a stimulatory role to activate fibroblast migration. GroPIns4P is produced by cPLA2 upon stimulation by diverse receptors, including the EGF receptor. Indeed, endogenously-produced GroPIns4P was shown to mediate the EGF-induced cell motility. Conclusions This study identifies a so-far undescribed mechanism of Shp1/Src modulation that promotes cell motility and that is dependent on the cPLA2 metabolite GroPIns4P. We show that GroPIns4P is required for EGF-induced fibroblast migration and that it is part of a cPLA2/GroPIns4P/Shp1/Src cascade that might have broad implications for studies of immune-inflammatory response and cancer. ![]()
Electronic supplementary material The online version of this article (10.1186/s12964-019-0329-3) contains supplementary material, which is available to authorized users.
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Developing Synthetic Peptides to Regulate Native HCN Channels. Biophys J 2019. [DOI: 10.1016/j.bpj.2018.11.1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Investigating the role of the human CIA2A-CIAO1 complex in the maturation of aconitase. Biochim Biophys Acta Gen Subj 2018; 1862:1980-1987. [DOI: 10.1016/j.bbagen.2018.05.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/15/2018] [Accepted: 05/24/2018] [Indexed: 02/08/2023]
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A synthetic peptide that prevents cAMP regulation in mammalian hyperpolarization-activated cyclic nucleotide-gated (HCN) channels. eLife 2018; 7:35753. [PMID: 29923826 PMCID: PMC6023613 DOI: 10.7554/elife.35753] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/14/2018] [Indexed: 12/13/2022] Open
Abstract
Binding of TRIP8b to the cyclic nucleotide binding domain (CNBD) of mammalian hyperpolarization-activated cyclic nucleotide-gated (HCN) channels prevents their regulation by cAMP. Since TRIP8b is expressed exclusively in the brain, we envisage that it can be used for orthogonal control of HCN channels beyond the central nervous system. To this end, we have identified by rational design a 40-aa long peptide (TRIP8bnano) that recapitulates affinity and gating effects of TRIP8b in HCN isoforms (hHCN1, mHCN2, rbHCN4) and in the cardiac current If in rabbit and mouse sinoatrial node cardiomyocytes. Guided by an NMR-derived structural model that identifies the key molecular interactions between TRIP8bnano and the HCN CNBD, we further designed a cell-penetrating peptide (TAT-TRIP8bnano) which successfully prevented β-adrenergic activation of mouse If leaving the stimulation of the L-type calcium current (ICaL) unaffected. TRIP8bnano represents a novel approach to selectively control HCN activation, which yields the promise of a more targeted pharmacology compared to pore blockers.
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Dermatoskopie bei Papillomatosis confluens et reticularis (Gougerot-Carteaud-Syndrom). J Dtsch Dermatol Ges 2017; 15:836-838. [DOI: 10.1111/ddg.13259_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dermatoscopy of confluent and reticulated papillomatosis (Gougerot-Carteaud syndrome). J Dtsch Dermatol Ges 2017; 15:836-838. [PMID: 28557309 DOI: 10.1111/ddg.13259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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BsmI (rs1544410) and FokI (rs2228570) vitamin D receptor polymorphisms, smoking, and body mass index as risk factors of cutaneous malignant melanoma in northeast Italy. Cancer Biol Med 2017; 14:302-318. [PMID: 28884047 PMCID: PMC5570607 DOI: 10.20892/j.issn.2095-3941.2017.0064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Objective : To investigate whether vitamin D receptor gene (VDR) BsmI-rs1544410 and FokI-rs2228570 polymorphisms, smoking duration, and body mass index (BMI) are risk factors for cutaneous melanoma, especially metastatic melanoma.
Methods : We studied 120 cutaneous melanoma cases [68 stage I and II non-metastatic melanoma (NMetM) patients, plus 52 Stage III and IV metastatic melanoma (MetM) patients], and 120 matching healthy controls from northeast Italy. VDR polymorphisms were measured by restriction fragment length polymorphism analysis. Absence or presence of BsmI and FokI restriction sites was denoted by " B” and " F” or by " b” and " f,” respectively.
Results : VDR-BsmI bb genotype was more frequent among MetM (32.7%) than among NMetM cases (13.2%), with odds ratio (OR)=3.18. Comparison of all melanoma patients vs healthy controls showed that the following biomarkers were at risk: ≥20 years of smoking (OR=2.43); ≥20 years of smoking combined with bb (OR=4.78), Bb+bb (OR=2.30), Ff (OR=3.04), and Ff+ff (OR=3.08); obesity (BMI>30 kg/m2) alone (OR=3.54); and obesity combined with Bb+bb (OR=3.52), Ff (OR=4.78), and Ff+ff (OR=6.56). Comparison of MetM vs NMetM patients revealed that the following biomarkers were at risk: ≥20 years of smoking (OR=2.39), ≥20 years of smoking combined with bb (OR=5.13), Bb+bb (OR=3.07), and Ff+ff (OR=2.66); and obesity combined with Bb+bb (OR=5.27), Ff (OR=6.28), and Ff+ff (OR=9.18). Triple combination of ≥20 years of smoking, obesity, and Bb+bb yielded OR=9.65 for melanoma patients vs healthy controls and OR=12.2 for MetM vs. NMetM patients.
Conclusions : Risk factors for cutaneous MetM include two VDR polymorphisms combined with smoking duration and obesity. Results suggest gene-environment implications in melanoma susceptibility and severity. Future studies in larger cohorts and in subjects with different genetic background are warranted to extend our findings.
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Pigmented Bowen's disease presenting with a "starburst" pattern. Dermatol Pract Concept 2016; 6:47-49. [PMID: 27867748 PMCID: PMC5108647 DOI: 10.5826/dpc.0604a11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 11/03/2022] Open
Abstract
Pigmented Bowen’s disease (pBD) is an uncommon in situ squamous cell carcinoma of the skin usually presenting as a dark scaly plaque involving chronically exposed sites, which is not uncommonly mistaken for other similar pigmented lesions, such as melanoma, pigmented basal cell carcinoma or seborrheic keratosis [1,2]. Dermoscopy has been proven to improve its diagnosis by showing several findings, i.e., gray/brownish dots in linear arrangement, scales, coiled vessels, focal/multifocal amorphous hypopigmentation and bluish structureless areas [1,2]. However, pBD may sometimes display dermoscopic features which are typical of other pigmented lesions, thus making its recognition quite troublesome despite the use of dermoscopy [1,2]. We report a case of pBD with a “starburst” pattern, discussing its dermoscopic differential diagnosis.
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Usual-type vulvar intraepithelial neoplasia: report of a case and its dermoscopic features. Int J Dermatol 2016; 55:e621-e623. [DOI: 10.1111/ijd.13370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 03/22/2016] [Accepted: 04/15/2016] [Indexed: 11/30/2022]
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Gelbe Plaques in der Ellenbeuge. J Dtsch Dermatol Ges 2016. [DOI: 10.1111/ddg.12866_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dermoscopy: a useful auxiliary tool in the diagnosis of type 1 segmental Darier's disease. Dermatol Pract Concept 2016; 6:53-5. [PMID: 27222773 PMCID: PMC4866628 DOI: 10.5826/dpc.0602a10] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/12/2016] [Indexed: 10/31/2022] Open
Abstract
Type 1 segmental Darier's disease is a blaschkolinear variant of Darier's disease resulting from a postzygotic mosaicism. Since it usually lacks diagnostic clues typical of the generalized form, including positive family history of the disease, nail and mucosal abnormalities, and/or acral involvement, its distinction from other acquired inflammatory blaschkolinear dermatoses may often be quite challenging, thus requiring histopathological examination to reach a definitive diagnosis. We report a case of type 1 segmental Darier's disease with its dermoscopic findings in order to show the usefulness of dermoscopy in assisting the noninvasive identification of this condition.
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Yellow plaques in antecubital fossae. J Dtsch Dermatol Ges 2016; 14:535-538. [PMID: 27018987 DOI: 10.1111/ddg.12866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Interstitial Granulomatous Drug Reaction After Intranasal Desmopressin Administration. Indian J Dermatol 2016; 61:125. [PMID: 26955152 PMCID: PMC4763668 DOI: 10.4103/0019-5154.174175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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