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Immunosuppressive therapy

Man Liu, Jingying Zhou, Zhiwei Chen, Alfred Sze-Lok Cheng
The tumour microenvironment plays an instrumental role in cancer development, progression and treatment response/resistance. Accumulating evidence underscores the fundamental importance of epigenetic regulation in tumour immune evasion. Following many pioneering discoveries demonstrating malignant transformation through epigenetic anomalies ("epimutations"), there is also growing emphasis on elucidating aberrant epigenetic mechanisms that reprogramme the milieu of tumour-associated immune and stromal cells toward an immunosuppressive state...
October 22, 2016: Journal of Pathology
Ting Hu, Qilin Huang, Kahing Wong, Hong Yang
Four polysaccharide fractions, LRP-1, LRP-2, LRP-3 and LRP-4 were extracted stepwise from Lignosus rhinocerotis sclerotia with distilled water at 25, 95, 120°C and 1.0M NaOH solution at 4°C. Their structure, molecular size and chain conformation were clarified using SEC-MALLS-RI, GC, FT-IR and UV-VIS. Furthermore, their immunomodulatory activities were evaluated by the model of cyclophosphamide (Cy)-induced immunosuppression. The LRP-1 and LRP-2 were polysaccharide-protein complexes (46-68% β-D-glucan and 27-48% protein), while LRP-3 and LRP-4 were absolutely composed of β-D-glucose...
October 18, 2016: International Journal of Biological Macromolecules
Adey A Berhanu, Svetlana Krasnokutsky, Robert T Keenan, Michael H Pillinger
INTRODUCTION: Pegloticase is a highly effective therapy for patients with refractory and/or tophaceous gout, but has a high discontinuation rate (30-50%) due to development of anti-drug antibodies causing loss of efficacy and risk of infusion reactions. OBJECTIVE: To describe the use of azathioprine or other immunosuppressive therapies as a pegloticase adjunct to prevent pegloticase immunogenicity when treating gout. METHODS: Case report of azathioprine use in a patient receiving pegloticase therapy for refractory tophaceous gout, and review of the literature for the impact of immunosuppressive agents on development of anti-drug antibodies...
September 20, 2016: Seminars in Arthritis and Rheumatism
Rusheng Chew, Andrew Dorman, Marion L Woods
OBJECTIVE: To describe the clinical features and risk factors of and optimal antifungal therapy for Purpureocillium lilacinum keratitis. DESIGN: Retrospective case series in a quaternary referral hospital setting. METHODS: Comprehensive chart review of patients diagnosed with P. lilacinum keratitis in the past 10 years. PARTICIPANTS: Four patients were identified. All were aged 60 years or greater, with none having prior ocular trauma...
October 2016: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
Zsolt Sziklavari, Michael Ried, Florian Zeman, Christian Grosser, Tamas Szöke, Reiner Neu, Rudolf Schemm, Hans-Stefan Hofmann
BACKGROUND: This retrospective study analyzed the effectiveness of intrathoracic negative pressure therapy for debilitated patients with empyema and compared the short-term and long-term outcomes of three different intrapleural vacuum-assisted closure (VAC) techniques. METHODS: We investigated 43 consecutive (pre)septic patients with poor general condition (Karnofsky index ≤ 50 %) and multimorbidity (≥ 3 organ diseases) or immunosuppression, who had been treated for primary, postoperative, or recurrent pleural empyema with VAC in combination with open window thoracostomy (OWT-VAC) with minimally invasive technique (Mini-VAC), and instillation (Mini-VAC-Instill)...
October 21, 2016: Journal of Cardiothoracic Surgery
Maria A Pérez-Jacoiste Asín, Nerea Carrasco-Antón, Mario Fernández-Ruiz, Rafael San Juan, Rodrigo Alonso-Moralejo, Esther González, Amado Andrés, Francisco López-Medrano, Jose M Aguado
BACKGROUND: The incidence of visceral leishmaniasis (VL) after solid organ transplantation (SOT) is increasing. The optimal therapy for post-transplant VL remains unclear, as relapses after liposomal amphotericin B (L-AmB) are common. Miltefosine has been shown to be effective for treating VL in immunocompetent patients, although data in the specific population of SOT recipients are lacking. METHODS: In the setting of an outbreak of leishmaniasis occurring in Southwest Madrid, we reviewed our experience in 6 SOT recipients with persistent or relapsing VL who received a 28-day course of miltefosine (2...
October 21, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
Kamran Balighi, Maryam Daneshpazhooh, Nessa Aghazadeh, Vahide Saeidi, Farzam Shahpouri, Pardis Hejazi, Cheyda Chams-Davatchi
BACKGROUND AND OBJECTIVES: Pemphigus vulgaris (PV) is typically treated with systemic corticosteroids and immunosuppressive agents. Avascular necrosis (AVN) of the femoral head is a well-recognized major complication of corticosteroid therapy. The characteristics of this serious complication in PV remain unknown. PATIENTS AND METHODS: Uncontrolled, retrospective study of all PV-related AVN cases diagnosed at an Iranian autoimmune bullous disease clinic between 1985 and 2013...
October 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
Sarah-Jayne Edmondson, Saina Attaran, Ulrich P Rosendahl
Wegner's granulomatosis (WG) is an autoimmune systemic vasculitis that results in necrotizing granulomas. We report a WG patient with a lung granuloma and aortic root dilatation, who underwent aortic root replacement on cardiopulmonary bypass (CPB). Intraoperatively, the patient suffered an aortic dissection, which was repaired immediately under deep hypothermic circulatory arrest (DHCA). Follow-up imaging showed complete granuloma resolution, despite absence of immunosuppressive therapy. Immune stimulation following CPB is well described; here, the opposite was observed and DHCA effects are discussed...
February 2016: Aorta (Stamford, Conn.)
Mª Carmen Herrero-Sánchez, Concepción Rodríguez-Serrano, Julia Almeida, Laura San Segundo, Susana Inogés, Ángel Santos-Briz, Jesús García-Briñón, Luis Antonio Corchete, Jesús F San Miguel, Consuelo Del Cañizo, Belén Blanco
BACKGROUND: Graft-versus-host disease (GvHD) remains the major obstacle to successful allogeneic hematopoietic stem cell transplantation, despite of the immunosuppressive regimens administered to control T cell alloreactivity. PI3K/AKT/mTOR pathway is crucial in T cell activation and function and, therefore, represents an attractive therapeutic target to prevent GvHD development. Recently, numerous PI3K inhibitors have been developed for cancer therapy. However, few studies have explored their immunosuppressive effect...
October 20, 2016: Journal of Hematology & Oncology
Claudio Bazzi, Tomoko Usui, Virginia Rizza, Daniela Casellato, Maurizio Gallieni, Masaomi Nangaku
BACKGROUND: The clinical course of idiopathic membranous nephropathy (IMN) varies from spontaneous remission of nephrotic syndrome (NS) to end-stage renal disease (ESRD). Selecting patients with high risk of progression for immunosuppressive therapy is mandatory. METHODS: 86 IMN subjects were followed for median of 69 months (range 6-253). Receiver operating characteristic curve and Cox proportional hazards model were used to evaluate prognostic factors for progression, defined as ESRD or eGFR reduction ≥50% of baseline...
October 20, 2016: Nephrology
Naoshi Nishida, Masatoshi Kudo
Despite recent advances in the treatment of hepatocellular carcinoma (HCC), the prognosis of patients with advanced stage of disease remains unfavorable. Several immune therapies have been applied to HCC, and their responses have not been satisfactory. The immune response to cancer is determined by the balance between the antigenicity of the tumor and the microenvironment of cancer tissues. Generally, accumulated genetic mutations are observed in HCC, which may lead to increased neoantigens on cancer cells with high antigenicity...
October 21, 2016: Oncology
Yang Yu, Qingyun Zhang, Qinggui Meng, Chen Zong, Lei Liang, Xue Yang, Rui Lin, Yan Liu, Yang Zhou, Hongxiang Zhang, Xiaojuan Hou, Zhipeng Han, Jiwen Cheng
Prostate cancer (PCa) has become the second leading cause of male cancer-related mortality in the United States. Mesenchymal stem cells (MSCs) are able to migrate to tumor tissues, and are thus considered to be novel antitumor carriers. However, due to their immunosuppressive nature, the application of MSCs in PCa therapy remains limited. In this study, we investigated the effect of MSCs overexpressing an NAD-dependent deacetylase sirtuin 1 (MSCs-Sirt1) on prostate tumor growth, and we analyzed the underlying mechanisms...
October 18, 2016: Oncotarget
Lauren Brasile, Nicholas Henry, Bart Stubenitsky
BACKGROUND: We have previously reported on a novel organ-specific immunomodifying therapy that provides protection from early allograft rejection in the absence of systemic immunosuppressive drugs. This novel therapy is a nano-barrier membrane called ImmunoCloak, consisting of a matrix of laminin, proteoglycans, fibronectin and collagens. The membrane "immunocloaks" the luminal surfaces within the renal vasculature by covering the point of contact between donor vascular endothelial cells and the recipient's immune cells; without adversely affecting renal function...
October 19, 2016: Transplantation
Parthopratim Dutta Majumder, Avirupa Ghose, Meenakshi Chidambaram, Sudha K Ganesh, Jyotirmay Biswas
PURPOSE: To report the clinical profile of a series of necrotizing scleritis in an Indian population. METHODS: A retrospective medical record review of 27 consecutive patients with necrotizing scleritis. Patient demographics, ocular and systemic findings, treatment modalities, and visual outcome were recorded. RESULTS: There were 19 males and 8 females (31 eyes) with mean age at presentation of 49.5 years (range: 30-84 years). Underlying immunologically induced disorders was present in 37%...
October 20, 2016: Ocular Immunology and Inflammation
J Wu, A Platero Luengo, M A Gil, K Suzuki, C Cuello, M Morales Valencia, I Parrilla, C A Martinez, A Nohalez, J Roca, E A Martinez, J C Izpisua Belmonte
More than eighteen years have passed since the first derivation of human embryonic stem cells (ESCs), but their clinical use is still met with several challenges, such as ethical concerns regarding the need of human embryos, tissue rejection after transplantation and tumour formation. The generation of human induced pluripotent stem cells (iPSCs) enables the access to patient-derived pluripotent stem cells (PSCs) and opens the door for personalized medicine as tissues/organs can potentially be generated from the same genetic background as the patient recipients, thus avoiding immune rejections or complication of immunosuppression strategies...
October 2016: Reproduction in Domestic Animals, Zuchthygiene
A L Wilkinson, S H Pedersen, M Urassa, D Michael, A Andreasen, J Todd, S M Kinung'hi, J Changalucha, J M McDermid
OBJECTIVES: HIV infection is associated with chronic systemic inflammation, with or without antiretroviral therapy. Consequences for fetal growth are not understood, particularly in settings where multiple maternal infections and malnutrition are common. The study was designed to examine maternal systemic circulating and umbilical cord blood cytokine concentrations in relation to birth anthropometry in a Tanzanian prospective cohort. METHODS: A 9-plex panel of maternal plasma cytokines in HIV-positive (n=44) and HIV-negative (n=70) mothers and the same cytokines in umbilical cord blood collected at delivery was assayed...
October 20, 2016: Tropical Medicine & International Health: TM & IH
Firas El Chaer, Dimpy P Shah, Roy F Chemaly
Cytomegalovirus (CMV) infection is a significant complication in hematopoietic cell transplantation (HCT) recipients. Four antiviral drugs are used for preventing or treating CMV: ganciclovir, valganciclovir, foscarnet, and cidofovir. With prolonged and repeated use of these drugs, CMV can become resistant to standard therapy, resulting in increased morbidity and mortality, especially in HCT recipients. Antiviral drug resistance should be suspected when CMV viremia (DNAemia or antigenemia) fails to improve or continue to increase after 2 weeks of appropriately dosed and delivered antiviral therapy...
October 19, 2016: Blood
Anne M Drewry, Enyo A Ablordeppey, Ellen T Murray, Evan R Beiter, Andrew H Walton, Mark W Hall, Richard S Hotchkiss
BACKGROUND: Identifying patients in the immunosuppressive phase of sepsis is essential for development of immunomodulatory therapies. Little data exists comparing the ability of the two most well-studied markers of sepsis-induced immunosuppression, human leukocyte antigen (HLA)-DR expression and lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF-ɑ) production, to predict mortality and morbidity. The purpose of this study was to compare HLA-DR expression and LPS-induced TNF-ɑ production as predictors of 28-day mortality and acquisition of secondary infections in adult septic patients...
October 20, 2016: Critical Care: the Official Journal of the Critical Care Forum
Souleymane Sawadogo, Boniface Makumbi, Anne Purfield, Christophine Ndjavera, Gram Mutandi, Andrew Maher, Francina Kaindjee-Tjituka, Jonathan E Kaplan, Benjamin J Park, David W Lowrance
BACKGROUND: Cryptococcal meningitis is common and associated with high mortality among HIV infected persons. The World Health Organization recommends that routine Cryptococcal antigen (CrAg) screening in ART-naïve adults with a CD4+ count <100 cells/μL followed by pre-emptive antifungal therapy for CrAg-positive patients be considered where CrAg prevalence is ≥3%. The prevalence of CrAg among HIV adults in Namibia is unknown. We estimated CrAg prevalence among HIV-infected adults receiving care in Namibia for the purpose of informing routine screening strategies...
2016: PloS One
Carlos Walter Sobrado, Lucas Faraco Sobrado
Introduction: Acute severe colitis is a potentially lethal medical emergency and, even today, its treatment remains a challenge for clinicians and surgeons. Intravenous corticoid therapy, which was introduced into the therapeutic arsenal in the 1950s, continues to be the first-line treatment and, for patients who are refractory to this, the rescue therapy may consist of clinical measures or emergency colectomy. Objective: To evaluate the indications for and results from drug rescue therapy (cyclosporine, infliximab and tacrolimus), and to suggest a practical guide for clinical approaches...
July 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
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