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https://www.readbyqxmd.com/read/28546112/pemphigus-vulgaris-induced-by-5-aminolaevulinic-acid-based-photodynamic-therapy
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/28400637/comparison-of-immunofluorescence-and-desmoglein-enzyme-linked-immunosorbent-assay-in-the-diagnosis-of-pemphigus-a-prospective-cross-sectional-study-in-a-tertiary-care-hospital
#14
Deepthi Ravi, S Smitha Prabhu, Raghavendra Rao, C Balachandran, Indira Bairy
BACKGROUND: Pemphigus is an acquired immunobullous disorder in which antibodies are directed against epidermal cadherins. Despite the commercial availability and less cost of enzyme-linked immunosorbent assays (ELISAs) to detect antidesmoglein 1 (Dsg1) and anti-Dsg3, immunofluorescence is still widely used for confirmation of diagnosis. AIMS: (1) To compare the usefulness of indirect immunofluorescence (IIF) and ELISA tests in the diagnosis of pemphigus. (2) To find the clinical correlation between the tests and severity of the disease...
March 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28392652/paraneoplastic-pemphigus-associated-with-a-malignant-thymoma-a-case-of-persistent-and-refractory-oral-ulcerations-following-thymectomy
#15
Jung Min Lim, Sang Eun Lee, Jimyung Seo, Do Young Kim, Takashi Hashimoto, Soo-Chan Kim
Paraneoplastic pemphigus is a rare, life-threatening autoimmune mucocutaneous blistering disease associated with underlying neoplasia, commonly lymphoproliferative tumors. Herein we report a case of paraneoplastic pemphigus with a unique autoantibody profile associated with a malignant thymoma. A 56-year-old female patient presented with relapsing oral ulcerations accompanied by erythematous papules and patches on her extremities for 2 months. Skin and mucosal biopsies identified interface dermatitis with lichenoid lymphocytic infiltration in the upper dermis...
April 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28368538/combined-deletion-of-the-vitamin-d-receptor-and-calcium-sensing-receptor-delays-wound-re-epithelialization
#16
Yuko Oda, Lizhi Hu, Thai Nguyen, Chak Fong, Chia-Ling Tu, Daniel D Bikle
When the skin is injured, keratinocytes proliferate, migrate, and differentiate to regenerate the epidermis. We recently showed that ablation of the vitamin D receptor (Vdr) in keratinocytes delays wound re-epithelialization in mice also fed a low calcium diet, implicating a cooperative role of Vdr and calcium signaling in this process. In this study we examined the role of vitamin D and calcium signaling in wound healing by deleting their receptors, Vdr and the calcium sensing receptor (Casr). Gene expression profiling of neonatal epidermis lacking both Vdr and Casr (DKO) specifically in keratinocytes revealed that DKO affects a number of pathways relevant to wound healing including Vdr, β-catenin and adherens junction signaling...
March 22, 2017: Endocrinology
https://www.readbyqxmd.com/read/28366912/low-dose-rituximab-as-an-adjuvant-therapy-in-pemphigus
#17
Jaya Gupta, Ranjan C Raval, Arti N Shah, Rekha B Solanki, Dhara D Patel, Kaksha B Shah, Ami D Badheka, Keyur B Shah, Neetish K Aggarwal, Vaaruni Ravishankar
BACKGROUND: Pemphigus is a chronic autoimmune blistering disease where systemic steroids and immunosuppressants are the mainstay of therapy, but long-term treatment with these agents is associated with many side effects. Rituximab, a chimeric monoclonal anti-CD20 antibody, in low doses has shown efficacy as an adjuvant to reduce the dose of steroids. AIM: To study the clinical efficacy and safety of low-dose rituximab as an adjuvant therapy in pemphigus. METHODS: Fifty patients with extensive pemphigus were selected, who either had recalcitrant pemphigus, were steroid dependent, had relapsed after pulse therapy, had anti-desmoglein levels >20, had contraindications to conventional treatment or wanted to avoid conventional treatment and its side effects...
March 29, 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28342216/case-of-bullous-pemphigoid-coexisting-with-anti-desmoglein-autoantibodies
#18
Duerna Tie, Tokiko Yoshida, Yuko Chinuki, Xia Da, Noriyoshi Ishikawa, Eishin Morita
A 79-year-old Japanese woman had clinical and histopathological features of bullous pemphigoid, while direct immunofluorescence test revealed C3 and immunoglobulin G depositions in the lower cell surfaces of the epidermis in addition to those in the dermoepidermal junction. Chemiluminescent enzyme immunoassays were positive for desmoglein-1 and -3 antibodies in addition to anti-BP180 antibodies. In an immunoblotting study, antibodies against both 180-kDa bullous pemphigoid antigen and 130-kDa pemphigus vulgaris antigen were detected...
March 24, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28339476/transgenic-mice-overexpressing-desmocollin-2-dsc2-develop-cardiomyopathy-associated-with-myocardial-inflammation-and-fibrotic-remodeling
#19
Andreas Brodehl, Darrell D Belke, Lauren Garnett, Kristina Martens, Nelly Abdelfatah, Marcela Rodriguez, Catherine Diao, Yong-Xiang Chen, Paul M K Gordon, Anders Nygren, Brenda Gerull
BACKGROUND: Arrhythmogenic cardiomyopathy is an inherited heart muscle disorder leading to ventricular arrhythmias and heart failure, mainly as a result of mutations in cardiac desmosomal genes. Desmosomes are cell-cell junctions mediating adhesion of cardiomyocytes; however, the molecular and cellular mechanisms underlying the disease remain widely unknown. Desmocollin-2 is a desmosomal cadherin serving as an anchor molecule required to reconstitute homeostatic intercellular adhesion with desmoglein-2...
2017: PloS One
https://www.readbyqxmd.com/read/28323918/elucidating-the-role-of-the-desmosome-protein-p53-apoptosis-effector-related-to-pmp-22-perp-in-growth-hormone-tumors
#20
Katja Kiseljak-Vassiliades, Taylor S Mills, Yu Zhang, Mei Xu, Kevin O Lillehei, B K Kleinschmidt-DeMasters, Margaret E Wierman
Purpose: Densely granulated (DG) and sparsely granulated (SG) growth hormone (GH) pituitary adenomas differ in biological behavior which may be correlated with their known differences in cytoplasmic keratin distribution and E-cadherin expression. We desired to explore candidate genes which might further explain this behavior. Methods: Exon expression microarray was performed on 21 GH tumors (10 SG and 11 DG) and 20 normal control pituitaries from autopsy. Results: Bioinformatic analyses confirmed a differential molecular signature between normal pituitary and GH tumors as well as between the GH tumor subtypes...
February 9, 2017: Endocrinology
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