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https://www.readbyqxmd.com/read/28631092/rituximab-treatment-in-pemphigus-vulgaris-effect-on-circulating-tregs
#1
Bakr El-Zawahry, Dalia Bassiouny, Rehab Hegazy, Heba Gawdat, Suzan Shalaby, Mervat Khorshied, Marwah Adly Saleh
Rituximab (RTX) has been used successfully to treat refractory pemphigus. We aimed to assess the response of pemphigus vulgaris (PV) cases to RTX therapy and its effect on CD4(+)CD25(+) (T regulatory) cells level. Sixteen PV patients were included in this study, each received one cycle of two RTX infusions (1000 mg on days 1 and 15). Five PV patients served as controls. All cases were on prednisolone ± adjuvant therapy. Pemphigus disease area index (PDAI), autoimmune bullous skin intensity score (ABSIS), anti-desmoglein antibodies, CD4, CD8, CD20 and CD4(+)CD25(+) levels were assessed at baseline, 3, 6 and 12 months after therapy...
June 19, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28622444/paraneoplastic-pemphigus-in-two-pairs-of-brothers
#2
B Kranzelbinder, T Hashimoto, M Joch, W Salmhofer, H Reiter, J Bauer, E Aberer
A 65-year-old man (Patient 1A) presented with erosions on the face, upper trunk and the oral mucosa in 1995 (Table 1). He underwent prostatectomy for prostate cancer in 1990. PNP was proven by antibodies to IgG anti-epithelial cell surface (ECS), desmoglein (Dsg)1, and Dsg3. This article is protected by copyright. All rights reserved.
June 16, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28620161/different-signaling-patterns-contribute-to-loss-of-keratinocyte-cohesion-dependent-on-autoantibody-profile-in-pemphigus
#3
Elias Walter, Franziska Vielmuth, Lukas Rotkopf, Miklós Sárdy, Orsolya N Horváth, Matthias Goebeler, Enno Schmidt, Rüdiger Eming, Michael Hertl, Volker Spindler, Jens Waschke
Pemphigus is an autoimmune blistering skin disease caused primarily by autoantibodies against desmoglein (Dsg)1 and 3. Here, we characterized the mechanisms engaged by pemphigus IgG from patients with different clinical phenotypes and autoantibody profiles. All pemphigus vulgaris (PV) and pemphigus foliaceus (PF) IgG and AK23, a monoclonal mouse antibody against Dsg3, caused loss of cell cohesion, cytokeratin retraction and p38MAPK activation. Strong alterations in Dsg3 distribution were caused by mucosal (aDsg3 antibodies), mucocutaneous (aDsg1 + aDsg3) as well as atypical (aDsg3) PV-IgG...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28600798/inhibition-of-p38mapk-signaling-prevents-epidermal-blistering-and-alterations-of-desmosome-structure-induced-by-pemphigus-autoantibodies-in-human-epidermis
#4
D T Egu, E Walter, V Spindler, J Waschke
BACKGROUND: Pemphigus vulgaris (PV) is a skin blistering disease caused by autoantibodies targeting the desmosomal adhesion proteins desmoglein (Dsg) 3 and 1. The mechanisms underlying pemphigus skin blistering are not fully elucidated but p38MAPK activation is one of the signaling events necessary for full loss of cell cohesion. However, it is unclear whether ultrastructural hallmarks of desmosome morphology as observed in patients' lesions are mediated by p38MAPK signaling. OBJECTIVE: In this study, we tested the relevance of p38MAPK for blister formation and the ultrastructural changes induced by PV autoantibodies in human skin...
June 10, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28590930/eight-potential-biomarkers-for-distinguishing-between-lung-adenocarcinoma-and-squamous-cell-carcinoma
#5
Jian Xiao, Xiaoxiao Lu, Xi Chen, Yong Zou, Aibin Liu, Wei Li, Bixiu He, Shuya He, Qiong Chen
Lung adenocarcinoma (LADC) and squamous cell carcinoma (LSCC) are the most common non-small cell lung cancer histological phenotypes. Accurate diagnosis distinguishing between these two lung cancer types has clinical significance. For this study, we analyzed four Gene Expression Omnibus (GEO) datasets (GSE28571, GSE37745, GSE43580, and GSE50081). We then imported the datasets into the Gene-Cloud of Biotechnology Information online platform to identify genes differentially expressed in LADC and LSCC. We identified DSG3 (desmoglein 3), KRT5 (keratin 5), KRT6A (keratin 6A), KRT6B (keratin 6B), NKX2-1 (NK2 homeobox 1), SFTA2 (surfactant associated 2), SFTA3 (surfactant associated 3), and TMC5 (transmembrane channel-like 5) as potential biomarkers for distinguishing between LADC and LSCC...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28559810/atypical-clinical-and-serological-manifestation-of-pemphigus-vegetans-a-case-report-and-review-of-the-literature
#6
REVIEW
Rebecca Mergler, Andreas Kerstan, Enno Schmidt, Matthias Goebeler, Sandrine Benoit
Pemphigus vegetans (PVeg) is a rare variant of pemphigus vulgaris characterized by pustules and/or papillomatous vegetations, preferentially affecting intertriginous and periorificial areas. Exceptional manifestations may be misdiagnosed resulting in delayed diagnosis and treatment. Diagnosis is confirmed by immunofluorescence and detection of anti-desmoglein (Dsg) 3 and/or anti-Dsg1 antibodies. We herein report an unusual manifestation of PVeg. At the time of first presentation, lesions were restricted to the right ring finger's tip...
January 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28556557/conjunctiva-derived-mesenchymal-stem-cell-cjmscs-as-a-potential-platform-for-differentiation-into-corneal-epithelial-cells-on-bioengineered-electrospun-scaffolds
#7
Fatemeh Soleimanifar, Yousef Mortazavi, Samad Nadri, Masoud Soleimani
With the aid of tissue engineering, the capability of nanofibrous scaffolds was examined for corneal epithelial differentiation of Conjunctiva mesenchymal stem cells (CJMSCs) as a new source. This study tried to provide a synthetic corneal sheet which could be applied in corneal regeneration. The hybrid arrangement of fine Silk fibers with the diameter of 93.65 nm and the polyurethane (PU) fibers with an average diameter of 575.5 makes a mat with sufficient mechanical properties and interconnected pores that could accelerate nutrient diffusion...
May 27, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28546112/pemphigus-vulgaris-induced-by-5-aminolaevulinic-acid-based-photodynamic-therapy
#8
Qian Zhou, Peiru Wang, Linglin Zhang, Bo Wang, Lei Shi, Uma Keyal, Anil Kumar Bhatta, Guolong Zhang, Xiuli Wang
Pemphigus vulgaris (PV) is an autoimmune disorder resulting from the interaction between autoantibodies and desmoglein. Here, we report a case of PV developed after 5-aminolaevulinic acid-based photodynamic therapy (ALA-PDT). The harmful and deleterious effects of UV radiation on the onset, during course, and perpetuation of PV have been observed for decades. Correlation between reactive oxygen species (ROS) and PV have also been reported. Oxidative proteins, which are modified by ROS, and subsequent production of antibodies by immune system seem to be responsible for PV developed following ALA-PDT...
May 22, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28543318/correlation-between-salivary-and-serum-anti-desmoglein-1-and-3-antibody-titres-using-elisa-and-between-anti-desmoglein-levels-and-disease-severity-in-pemphigus-vulgaris
#9
D De, G Khullar, S Handa, N Joshi, B Saikia, R W Minz
ELISA for anti-desmoglein antibodies (Dsg) is commonly used for diagnosis and assessment of treatment response in pemphigus vulgaris (PV). The present study was conducted to assess the relationship between salivary and serum Dsg1 and Dsg3 levels, and whether salivary Dsg1 and Dsg3 levels correlate with clinical disease severity of oral mucosal lesions in PV. In total 43, patients with PV with predominantly mucosal involvement were recruited. Both serum and salivary samples were collected from the cases, and salivary samples were also collected from five controls...
May 22, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28524044/expression-of-keratin-1-keratin-10-desmoglein-1-and-desmocollin-1-in-the-epidermis-possible-downregulation-by-interleukin-4-and-interleukin-13-in-atopic-dermatitis
#10
Ami Totsuka, Miyuki Omori-Miyake, Makoto Kawashima, Junji Yagi, Yuichiro Tsunemi
In the pathogenesis of atopic dermatitis (AD), skin barrier dysfunction and T-helper (Th) type 2 immune reactions play important roles. Alterations in the stratum spinosum of AD have not been studied in much detail. In this study, we investigated the changes of structural proteins and adhesion molecules residing in the stratum spinosum of AD lesional skin, and whether Th2 cytokines including interleukin (IL)-4 and IL-13 alter the expression of these proteins. Skin samples were collected from patients with AD and from healthy controls...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28498563/identification-of-factors-associated-with-treatment-refractoriness-of-oral-lesions-in-pemphigus-vulgaris
#11
S Kumar, D De, S Handa, R K Ratho, S Bhandari, A Pal, P Kamboj, S Sarkar
BACKGROUND: Oral mucosal lesions of pemphigus vulgaris (PV) are known to show more treatment refractoriness than skin lesions. OBJECTIVES: To identify the role of different clinical and laboratory parameters in the treatment refractoriness in the oral lesions of PV. METHODS: This prospective study recruited 50 adult patients of PV having oral lesions. Patients were given treatment appropriate for overall disease severity. Treatment refractoriness was defined arbitrarily as less than 75% reduction in oral objective Autoimmune Bullous Skin Disorder Intensity Score (ABSIS) after treatment for 6 months...
May 12, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28497856/case-of-shift-from-linear-immunoglobulin-a-bullous-dermatosis-to-pemphigus-herpetiformis-for-a-short-period-of-time
#12
Hiroshi Koga, Norito Ishii, Takashi Hashimoto, Takekuni Nakama
Pemphigus herpetiformis (PH) is a rare variant of pemphigus characterized by erythemas and vesicles, tending to present with annular-shaped lesions. Immunologically, immunoglobulin (Ig)G deposition at the keratinocyte cell surfaces is observed. Linear IgA bullous dermatosis (LABD) is a rare subepidermal blistering disease with linear IgA deposits at the epidermal basement membrane zone (BMZ). The annular-shaped skin lesions in PH mimic clinical manifestation of other autoimmune bullous diseases, including LABD, although PH and LABD have different immunological and histopathological features...
February 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28494700/invasive-front-grading-and-epithelial-mesenchymal-transition-in-canine-oral-and-cutaneous-squamous-cell-carcinomas
#13
E Nagamine, K Hirayama, K Matsuda, M Okamoto, T Ohmachi, K Uchida, T Kadosawa, H Taniyama
Oral and cutaneous tissues are the most frequent origin in canine squamous cell carcinoma (SSC). In SCC, changes in adhesion molecule expression and transition from epithelial to mesenchymal phenotype are thought to be important in development of invasive behavior of neoplastic cells at the leading front of the tumor. We therefore investigated histological invasive front grading and epithelial-mesenchymal transition (EMT) in both oral SCCs and cutaneous SCCs. EMT was assessed by evaluating immunohistochemical expression of E-cadherin, β-catenin, desmoglein, vimentin, and N-cadherin...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28492232/pemphigus
#14
REVIEW
Michael Kasperkiewicz, Christoph T Ellebrecht, Hayato Takahashi, Jun Yamagami, Detlef Zillikens, Aimee S Payne, Masayuki Amagai
Pemphigus is a group of IgG-mediated autoimmune diseases of stratified squamous epithelia, such as the skin and oral mucosa, in which acantholysis (the loss of cell adhesion) causes blisters and erosions. Pemphigus has three major subtypes: pemphigus vulgaris, pemphigus foliaceus and paraneoplastic pemphigus. IgG autoantibodies are characteristically raised against desmoglein 1 and desmoglein 3, which are cell-cell adhesion molecules found in desmosomes. The sites of blister formation can be physiologically explained by the anti-desmoglein autoantibody profile and tissue-specific expression pattern of desmoglein isoforms...
May 11, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28492006/evaluation-of-prolactin-levels-in-patients-with-newly-diagnosed-pemphigus-vulgaris-and-its-correlation-with-pemphigus-disease-area-index
#15
Vahideh Lajevardi, Zahra Hallaji, Maryam Daneshpazhooh, Narges Ghandi, Peyman Shekari, Sepideh Khani
BACKGROUND: Prolactin is a hormone; in addition to it known roles, it has immunomodulatory effects on lymphocytes maturation and immunoglobulins production. Hyperprolactinemia has been demonstrated in various autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, type I diabetes mellitus, and Graves' disease. In view of the prolactin immunomodulatory roles, studying prolactin levels in pemphigus as an autoimmune blistering disease may introduce new ways of understanding disease etiology and developing treatment strategies...
June 2016: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28490445/serological-epithelial-component-proteins-identify-intestinal-complications-in-crohn-s-disease
#16
Yunki Y Yau, Rupert Wl Leong, Aviv Pudipeddi, Diane Redmond, Valerie C Wasinger
Crohns Disease (CD) is a relapsing inflammation of the gastrointestinal tract that affects a young working age population and is increasing in developing countries. Half of all sufferers will experience stricturing or fistulizing intestinal complications that require extensive surgical interventions and neither genes nor clinical risk factors can predict this debilitating natural history. We applied discovery and verification phase studies as part of an NCI-FDA modelled biomarker pipeline to identify differences in the low-mass (<25kDa) blood-serum proteome between CD behavioural phenotypes...
May 10, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28471236/a-study-of-clinical-histopathological-and-direct-immunofluorescence-diagnosis-in-pemphigus-group-utility-of-direct-immunofluorescence
#17
Z Hrabovska, J Jautova, V Hrabovsky
AIMS: To determine the diagnostic accordance between histopathological and direct immunofluorescence diagnosis of patients with autoimmune vesiculobullous skin diseases. BACKGROUND: The term pemphigus refers to a group of autoimmune blistering diseases mediated by auto-antibodies directed against desmoglein proteins. The differentiation between the various bullous diseases is important for treatment and prognosis. Direct immunofluorescence microscopy is still the gold standard in differentiating these diseases...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28469076/stat3-regulates-desmoglein-3-transcription-in-epithelial-keratinocytes
#18
Xuming Mao, Michael Jeffrey T Cho, Christoph T Ellebrecht, Eric M Mukherjee, Aimee S Payne
Pemphigus vulgaris (PV) is an epithelial blistering disease caused by autoantibodies to the desmosomal cadherin desmoglein 3 (DSG3). Glucocorticoids improve disease within days by increasing DSG3 gene transcription, although the mechanism for this observation remains unknown. Here, we show that DSG3 transcription in keratinocytes is regulated by Stat3. Treatment of primary human keratinocytes (PHKs) with hydrocortisone or rapamycin, but not the p38 MAPK inhibitor SB202190, significantly increases DSG3 mRNA and protein expression and correspondingly reduces phospho-S727 Stat3...
May 4, 2017: JCI Insight
https://www.readbyqxmd.com/read/28438789/desmoglein-2-modulates-extracellular-vesicle-release-from-squamous-cell-carcinoma-keratinocytes
#19
Andrew M Overmiller, Jennifer A Pierluissi, Peter J Wermuth, Sami Sauma, Ubaldo Martinez-Outschoorn, Madalina Tuluc, Adam Luginbuhl, Joseph Curry, Larry A Harshyne, James K Wahl, Andrew P South, Mỹ G Mahoney
Extracellular vesicles (EVs) are nanoscale membrane-derived vesicles that serve as intercellular messengers carrying lipids, proteins, and genetic material. Substantial evidence has shown that cancer-derived EVs, secreted by tumor cells into the blood and other bodily fluids, play a critical role in modulating the tumor microenvironment and affecting the pathogenesis of cancer. Here we demonstrate for the first time that squamous cell carcinoma (SCC) EVs were enriched with the C-terminal fragment of desmoglein 2 (Dsg2), a desmosomal cadherin often overexpressed in malignancies...
April 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28417991/esophageal-and-small-intestinal-mucosal-integrity-in-eosinophilic-esophagitis-and-response-to-an-elemental-diet
#20
Marijn J Warners, Berber J Vlieg-Boerstra, Joanne Verheij, Patricia H P van Hamersveld, Bram D van Rhijn, Marleen T J Van Ampting, Lucien F Harthoorn, Wouter J de Jonge, Andreas J P M Smout, Albert J Bredenoord
OBJECTIVES: The esophageal mucosal integrity is impaired in eosinophilic esophagitis (EoE) and it has been suggested that the duodenal permeability is increased. The absence of food allergens may restore the integrity. The aims of this study were to assess duodenal permeability in EoE and to evaluate the effect of an elemental diet on the esophageal and duodenal integrity. METHODS: In this prospective study 17 adult EoE patients and 8 healthy controls (HC) were included...
April 18, 2017: American Journal of Gastroenterology
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