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IgG4

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https://www.readbyqxmd.com/read/27904866/sj%C3%A3-gren-syndrome-related-membranous-glomerulonephritis-progressing-to-membranoproliferative-glomerulonephritis
#1
Junko Yabuuchi, Tatsuya Suwabe, Toshiharu Ueno, Junichi Hoshino, Akinari Sekine, Noriko Hayami, Masahiko Oguro, Kyohei Kunisawa, Masahiro Kawada, Masayuki Yamanouchi, Keiichi Sumida, Hiroki Mizuno, Eiko Hasegawa, Naoki Sawa, Kenmei Takaichi, Kenichi Ohashi, Takeshi Fujii, Yoshifumi Ubara
We report a case of glomerulopathy in a 36-year-old Japanese woman with primary Sjögren syndrome (pSS). The first renal biopsy suggested membranous glomerulonephritis. However, repeat biopsy was performed after 16 years because of increased proteinuria, revealing membranoproliferative glomerulonephritis with mesangial deposits, subendothelial deposits, and subepithelial deposits. Immunofluorescent studies showed predominant deposition of IgG2 and IgG4. This patient was positive for antinuclear antibody and anti-SS-A antibody...
September 2016: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/27896847/a-case-of-leucocytoclastic-vasculitis-as-a-complication-of-igg4-related-skin-disease
#2
S Nakagawa, Y Nakamura, S Yasui, O Yokosuka, H Matsue
No abstract text is available yet for this article.
November 29, 2016: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/27896569/anti-pituitary-antibodies-against-corticotrophs-in-igg4-related-hypophysitis
#3
Naoko Iwata, Shintaro Iwama, Yoshihisa Sugimura, Yoshinori Yasuda, Kohtaro Nakashima, Seiji Takeuchi, Daisuke Hagiwara, Yoshihiro Ito, Hidetaka Suga, Motomitsu Goto, Ryoichi Banno, Patrizio Caturegli, Teruhiko Koike, Yoshiharu Oshida, Hiroshi Arima
PURPOSE: IgG4-related disease is a systemic inflammatory disease characterized by infiltration of IgG4-positive plasma cells into multiple organs, including the pituitary gland. Autoimmunity is thought to be involved in the pathogenesis of IgG4-related disease. The diagnosis of IgG4-related hypophysitis (IgG4-RH) is difficult because its clinical features, such as pituitary swelling and hypopituitarism, are similar to those of other pituitary diseases, including lymphocytic hypophysitis and sellar/suprasellar tumors...
November 28, 2016: Pituitary
https://www.readbyqxmd.com/read/27891673/igg4-related-disease-experience-of-100-consecutive-cases-from-a-specialist-centre
#4
Adrian C Bateman, Emma L Culver
AIMS: To describe the features of 100 consecutive cases referred to a single UK institution, in which a diagnosis of IgG4-related disease (IgG4-RD) was under consideration. METHODS AND RESULTS: The histological features were reviewed by a single histopathologist and cases categorised using the 2012 Boston criteria: Category 1 - histologically highly suggestive of IgG4-RD; 2 - probable histopathological features of IgG4-RD; 3 - insufficient histopathological features of IgG4-RD...
November 28, 2016: Histopathology
https://www.readbyqxmd.com/read/27890680/the-putative-role-of-maldi-msi-in-the-study-of-membranous-nephropathy
#5
Andrew Smith, Vincenzo L'Imperio, Elena Ajello, Franco Ferrario, Niccolò Mosele, Martina Stella, Manuel Galli, Clizia Chinello, Federico Pieruzzi, Goce Spasovski, Fabio Pagni, Fulvio Magni
Membranous Nephropathy (MN) is an immunocomplex mediated renal disease that represents the leading cause of nephrotic syndrome in adults and is one of the most frequent glomerulopathies worldwide. This glomerular disease can manifest as primary (idiopathic) or secondary and this distinction is crucial when choosing the most appropriate management of patients. In secondary cases, the best strategy consists in treating the underlying disease whereas in primary forms, the possible identification of confirmatory markers of the idiopathic etiology underlining the process is requested by clinicians...
November 23, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27887675/clinical-efficacy-and-safety-of-ixekizumab-for-treatment-of-psoriasis
#6
A Azevedo, T Torres
Psoriasis is a common, chronic, inflammatory skin disorder with a physical and emotional burden. Emerging evidence suggests that IL17-A is a key cytokine in the immunopathogenesis of psoriasis. Ixekizumab is a humanized IgG4 monoclonal antibody that acts by neutralizing IL-17A. Data from Phase I-III studies reveal that ixekizumab is highly effective in treating patients with moderate-to-severe plaque psoriasis. A large proportion of patients receiving ixekizumab achieved or maintained complete or near complete resolution of psoriatic lesions with an acceptable safety profile through week 60...
November 22, 2016: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/27886799/igg4-related-disease-advances-in-the-diagnosis-and-treatment
#7
REVIEW
Pilar Brito-Zerón, Xavier Bosch, Manuel Ramos-Casals, John H Stone
IgG4-related disease is a rare immune-mediated systemic disease with the capability of involving essentially any organ. Although the presenting clinical features vary substantially according to the speciality to which patients present first, perhaps the most common clinical presentation is that of single or multiple organ enlargement, arousing suspicion of cancer. The disease is frequently diagnosed unexpectedly in pathological specimens or on imaging studies. The diagnostic approach is complex and includes not only IgG4-related tests (serum levels, circulating plasmablasts, and specific immunohistochemical studies), but also clinical, laboratory, and imaging tests as well as the typical histopathological features (lymphocytic infiltration, storiform fibrosis, eosinophilic infiltration, and obliterative phlebitis)...
April 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27884179/factors-related-to-renal-cortical-atrophy-development-after-glucocorticoid-therapy-in-igg4-related-kidney-disease-a-retrospective-multicenter-study
#8
Ichiro Mizushima, Motohisa Yamamoto, Dai Inoue, Shinichi Nishi, Yoshinori Taniguchi, Yoshifumi Ubara, Shoko Matsui, Tetsuhiko Yasuno, Hitoshi Nakashima, Hiroki Takahashi, Kazunori Yamada, Hideki Nomura, Masakazu Yamagishi, Takao Saito, Mitsuhiro Kawano
BACKGROUND: In immunoglobulin G4-related kidney disease (IgG4-RKD), focal or diffuse renal cortical atrophy is often observed in the clinical course after glucocorticoid therapy. This study aimed to clarify the factors related to renal atrophy after glucocorticoid therapy in IgG4-RKD. METHODS: We retrospectively evaluated clinical features including laboratory data and computed tomography (CT) findings before and after glucocorticoid therapy in 23 patients diagnosed with IgG4-RKD, all of whom were followed up for more than 24 months...
November 25, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27882402/-diseases-of-connective-tissue-in-igg4-associated-autoimmune-diseases
#9
G A Krombach
The IgG4-associated diseases of connective tissue are caused by allergen-mediated autoimmune processes. The retroperitoneum, mesentery and mediastinum as well as other less common localizations, such as the neck, orbit and periarticular connective tissue can be affected. Inflammatory fibrosis is initially dominated by a lymphocytic and plasma cell-rich infiltrate and later by cell-poor storiform fibrosis. Stenosis and occlusion of vessels, ureters and intestines can cause severe complications. Computed tomography (CT) and magnetic resonance imaging (MRI) can be implemented in the diagnostic algorithm to narrow the differential diagnosis, delineate the distribution of fibrosis and reveal complications...
November 23, 2016: Der Radiologe
https://www.readbyqxmd.com/read/27879975/metastatic-merkel-cell-carcinoma-response-to-nivolumab
#10
Frances M Walocko, Benjamin Y Scheier, Paul W Harms, Leslie A Fecher, Christopher D Lao
BACKGROUND: Merkel cell carcinoma (MCC) is an aggressive cutaneous neuroendocrine malignancy with limited treatment options. Several lines of evidence support the programmed death-1/programmed death-ligand 1 (PD-1/PD-L1) axis as a likely contributor to immune evasion in MCC. CASE PRESENTATION: We report a case of a patient with metastatic MCC with a significant and durable response to nivolumab, a humanized IgG4 monoclonal anti-PD-1 antibody. CONCLUSION: Immunotherapy with PD-1/PD-L1 inhibitors has become a rational and promising treatment option for MCC in the advanced or metastatic disease...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27871394/atypical-presentation-of-igg4-related-disease-of-the-eyelid
#11
Mamta Shah, Charles Shao, Roman Shinder
No abstract text is available yet for this article.
December 2016: Ophthalmology
https://www.readbyqxmd.com/read/27866757/differential-diagnosis-of-igg4-related-sialadenitis-primary-sj%C3%A3-gren-syndrome-and-chronic-obstructive-submandibular-sialadenitis
#12
X Hong, W Li, X-Y Xie, Z-Y Zhang, Y Chen, Y Gao, X Peng, J-Z Su, Y-Y Zhang, Z Wang, Z-G Cai, L Zhang, Y-Y Liu, J He, L-M Ren, Z-G Li, G-Y Yu
Our aim was to differentiate IgG4-related sialadenitis, primary Sjögren syndrome, and chronic obstructive submandibular sialadenitis by analysing clinical, radiographic, and pathological features. Fifty-five patients, 50, and 50 were enrolled, respectively and their baseline characteristics and serological, sialographic, and pathological findings compared. The male:female ratio for IgG4-related sialadenitis was 1:1.2 for primary Sjögren syndrome 1:15.7, and for chronic obstructive submandibular sialadenitis1:0...
November 17, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27864854/igg4-related-hypophysitis-is-highly-prevalent-among-cases-of-histologically-confirmed-hypophysitis
#13
Christian Bernreuther, Christopher Illies, Jörg Flitsch, Michael Buchfelder, Rolf Buslei, Markus Glatzel, Wolfgang Saeger
IgG4-related disease is an immune-mediated disease with manifestations in most organ systems among them the pituitary gland. To date, few cases of histologically confirmed cases of IgG-related hypophysitis have been reported. The aim of this study was to retrospectively determine the prevalence of IgG4-related hypophysitis among cases previously diagnosed as primary hypophysitis (lymphocytic hypophysitis, granulomatous hypophysitis, and hypophysitis not otherwise specified). Histological and immunohistochemical analysis revealed that 12 of 29 cases (41...
November 19, 2016: Brain Pathology
https://www.readbyqxmd.com/read/27864697/characteristics-of-primary-sj%C3%A3-gren-s-syndrome-patients-with-igg4-positive-plasma-cells-infiltration-in-the-labial-salivary-glands
#14
Chang Liu, Huayong Zhang, Genhong Yao, Yunxia Hu, Jingjing Qi, Yan Wang, Weiwei Chen, Xiaojun Tang, Wenchao Li, Liwei Lu, Luo Gu, Lingyun Sun
The purpose of this study was to investigate the characteristics of primary Sjögren's syndrome (pSS) patients with IgG4 positive (IgG4(+)) plasma cell infiltration in labial salivary glands (LSGs). Paraffin sections of LSGs from 336 pSS patients were stained with IgG4 and IgG monoclonal antibodies. According to the infiltration of IgG4(+) plasma cells, patients were divided and clinical and serological characteristics were analyzed and compared. Based on the infiltration of IgG4(+) plasma cells in the LSGs, patients were divided into three subgroups, low IgG4, moderate IgG4, and high IgG4 groups...
November 18, 2016: Clinical Rheumatology
https://www.readbyqxmd.com/read/27864476/anti-hinge-antibodies-recognize-igg-subclass-and-protease-restricted-neoepitopes
#15
Willem J J Falkenburg, Dirkjan van Schaardenburg, Pleuni Ooijevaar-de Heer, Michel W P Tsang-A-Sjoe, Irene E M Bultink, Alexandre E Voskuyl, Arthur E H Bentlage, Gestur Vidarsson, Gertjan Wolbink, Theo Rispens
Anti-hinge Abs (AHAs) target neoepitopes exposed after proteolytic cleavage of IgG. In this study, we explored the diversity of protease- and IgG subclass-restricted AHAs and their potential as immunological markers in healthy donors (HDs) and patients with rheumatoid arthritis (RA) or systemic lupus erythematosus (SLE). AHA reactivity against IgG-degrading enzyme of Streptococcus pyogenes (IdeS)- or pepsin-generated F(ab')2 fragments of all four human IgG subclasses was determined. AHA reactivity against one or more out of eight F(ab')2 targets was found in 68% (68 of 100) of HDs, 69% (68 of 99) of SLE patients, and 81% (79 of 97) of RA patients...
November 18, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27863105/igg4-related-nodular-lung-lesion
#16
Fotini N Skopouli, Panayotis Panayotopoulos, Haralampos M Moutsopoulos
No abstract text is available yet for this article.
November 11, 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27862687/anti-factor-viii-antibodies-in-brothers-with-haemophilia-a-share-similar-characteristics
#17
J Kahle, A Orlowski, D Stichel, J F Healey, E T Parker, S M Donfield, J Astermark, E Berntorp, P Lollar, D Schwabe, C Königs
INTRODUCTION: The development of neutralizing antibodies (inhibitors) against coagulation factor VIII (FVIII) is currently the most serious complication for patients with haemophilia A undergoing FVIII replacement therapy. Several genetic factors have been acknowledged as risk factors for inhibitor development. AIM: To analyze the influence of genetic factors on the nature of the humoral immune response to FVIII in eight brother pairs with inhibitors. METHODS: The domain specificity of FVIII-specific IgG was analysed by antibody binding to FVIII fragments and homologue-scanning mutagenesis (HSM)...
November 8, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27862026/unusual-presentation-of-sj%C3%A3-gren-associated-neuropathy-with-plasma-cell-rich-infiltrate
#18
Elie Naddaf, Sarah E Berini, P James B Dyck, Ruple S Laughlin
INTRODUCTION: Sjögren syndrome is thought to be a lymphocyte-driven process. Peripheral nervous system involvement occurs in about 20-25% of patients. A sensory predominant, large fiber peripheral neuropathy is most common, and it is usually associated with a subacute to chronic presentation. METHODS: We report a rare case of an acute Sjögren-associated, sensory predominant, length-dependent peripheral neuropathy mimicking Guillain-Barré syndrome. The patient presented with sensory ataxia preceded by fever and polyarthralgia...
November 16, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27859599/double-blind-placebo-controlled-challenge-showed-that-peanut-oral-immunotherapy-was-effective-for-severe-allergies-without-negative-effects-on-airway-inflammation
#19
Anna Kaarina Kukkonen, Riikka Uotila, Leo Pekka Malmberg, Anna Susanna Pelkonen, Mika Juhani Mäkelä
AIM: This study examined the efficacy and the safety of peanut oral immunotherapy (OIT). METHODS: We recruited 60 patients aged 6-18 years who had a moderate-to-severe reaction to a double-blind placebo-controlled peanut challenge: 39 received OIT during an eight-month build-up phase and maintenance phase and 21 controls avoided peanuts. We measured specific immunoglobulin E and G4 (IgE and IgG4) to peanuts and to Ara h 1, 2, 3, 8, and 9 and monitored adverse events, bronchial hyperresponsiveness (BHR) to methacholine and fractional concentrations of exhaled nitric oxide (FeNO)...
November 12, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/27859584/oral-administration-of-transgenic-barley-expressing-a-culicoides-allergen-induces-specific-antibody-response
#20
S Jonsdottir, V Svansson, S B Stefansdottir, E Mäntylä, E Marti, S Torsteinsdottir
BACKGROUND: Insect bite hypersensitivity is an IgE-mediated dermatitis of horses initiated by bites of midges of the genus Culicoides. Culicoides spp. are not indigenous to Iceland and the prevalence of insect bite hypersensitivity is much higher in horses born in Iceland and exported as compared to Icelandic horses born in a Culicoides rich environment. Immunotherapy is therefore needed. OBJECTIVES: The aim of the study was to express an allergen from Culicoides in barley grain and investigate whether an immune response could be obtained in healthy Icelandic horses by oral treatment with transgenic barley expressing the allergen...
November 17, 2016: Equine Veterinary Journal
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