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infliximab serum

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https://www.readbyqxmd.com/read/28230306/suppression-of-anti-drug-antibodies-to-infliximab-or-adalimumab-with-the-addition-of-an-immunomodulator-in-patients-with-inflammatory-bowel-disease
#1
A S Strik, G R van den Brink, C Ponsioen, R Mathot, M Löwenberg, G R D'Haens
BACKGROUND: Loss of response to anti-tumour necrosis factor (TNF) therapy in patients with inflammatory bowel disease (IBD) is often caused by anti-drug antibody formation with neutralisation of drug effect. Addition of an immunomodulator has been suggested to reduce immunogenicity, leading to regained response. AIM: To investigate whether addition of an immunomodulator to anti-TNF monotherapy could lead to anti-drug antibody suppression and regained clinical response in IBD patients...
February 23, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28222600/a-rapid-immunoassay-for-detection-of-infliximab-in-whole-blood-using-a-fiber-optic-spr-biosensor
#2
Jiadi Lu, Dragana Spasic, Filip Delport, Thomas Van Stappen, Iris Detrez, Devin Daems, Séverine Vermeire, Ann Gils, Jeroen Lammertyn
Monitoring the concentration of a therapeutic drug antibody, infliximab (IFX), is recommended for enhancing its efficacy in patients with inflammatory bowel disease (IBD). However, IFX concentrations are currently determined in patients' serum/plasma, which requires sample preparation from blood, hence hampering the turnaround time. In this paper, we present a short immunoassay (10 minutes) using fiber-optic SPR (FO-SPR) biosensor for detection of IFX spiked in 100-fold diluted serum, plasma and whole blood...
February 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28211593/higher-infliximab-trough-levels-are-associated-with-perianal-fistula-healing-in-patients-with-crohn-s-disease
#3
A J Yarur, V Kanagala, D J Stein, F Czul, M A Quintero, D Agrawal, A Patel, K Best, C Fox, K Idstein, M T Abreu
BACKGROUND: Infliximab has been found to be efficacious in the treatment of fistulas in the setting of Crohn's disease, even though some patients do not benefit from therapy. AIM: To assess the correlation between perianal fistula healing and trough levels of infliximab. METHODS: In this cross-sectional study, we identified patients with Crohn's disease who had perianal fistulas and were treated with infliximab for at least 24 weeks. We excluded patients who underwent a faecal diversion procedure or proctectomy...
February 17, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28195852/a-real-life-population-pharmacokinetic-study-reveals-factors-associated-with-clearance-and-immunogenicity-of-infliximab-in-inflammatory-bowel-disease
#4
Johannan F Brandse, Diane Mould, Oscar Smeekes, Yaël Ashruf, Sabine Kuin, Anne Strik, Gijs R van den Brink, Geert R DʼHaens
BACKGROUND: Several factors influencing the pharmacokinetics of infliximab (IFX) in inflammatory bowel disease (IBD) have been identified. We studied the impact of patient, disease, and treatment characteristics on clearance and immunogenicity of IFX in a real-world patient-with-IBD cohort. METHODS: Serum concentrations of IFX and antibodies to IFX (ATIs) were measured in patients with IBD at a single center using an enzyme-linked immunosorbent assay and radioimmunoassay...
February 10, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28175221/p665-unchanged-infliximab-serum-concentrations-after-switching-from-the-reference-infliximab-to-the-biosimilar-ct-p13-in-patients-with-quiescent-crohn-s-disease-a-prospective-study
#5
A Strik, W van de Vrie, Y van Megen, J Bloemsaat-Minekus, T Rispens, G D'Haens
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28174944/dop033-severely-active-ulcerative-colitis-is-associated-with-high-baseline-infliximab-clearance-reduced-serum-half-life-and-worse-endoscopic-outcomes
#6
N Vande Casteele, V Jairath, B Levesque, B Feagan, W Sandborn
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172974/p382-a-panel-of-serum-markers-for-early-detection-of-endoscopic-healing-with-infliximab-in-patients-with-ulcerative-colitis
#7
M de Bruyn, R Ringold, M Ferrante, G Van Assche, G Opdenakker, A Dukler, S Vermeire
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172647/p481-serum-levels-of-infliximab-associate-with-early-mucosal-healing-in-crohn-s-disease-different-therapeutic-window-between-post-induction-and-maintenance-treatment
#8
T Feng, B Chen, R Mao, S Ben-Horin, M Chen
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172602/op006-correlation-of-durability-of-response-serum-trough-concentrations-and-outcome-parameters-long-term-follow-up-of-the-trough-concentration-adapted-infliximab-treatment-taxit-trial
#9
L Pouillon, M Ferrante, G Van Assche, P Rutgeerts, M Noman, N Vande Casteele, A Gils, S Vermeire
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172523/dop031-subtherapeutic-serum-infliximab-trough-levels-and-complete-mucosal-healing-are-associated-with-sustained-clinical-remission-after-infliximab-discontinuation-in-paediatric-crohn-s-disease-patients
#10
B Kang, K Lee, K Kim, J H Lee, Y H Choe
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28160250/thiopurines-and-methotrexate-use-in-ibd-patients-in-a-biologic-era
#11
REVIEW
Gerassimos J Mantzaris
Although we have been living in the era of biologic therapy for several decades, the use of immunomodulators (primarily thiopurines [azathioprine and mercaptopurine] and less so methotrexate) still remains an important component of the inflammatory bowel disease (IBD) pharmaceutical arsenal. Thiopurines as monotherapy exert corticosteroid-sparing effects and can maintain long-term remission in a considerable proportion of patients who have frequent relapses and are or have become mesalazine and/or corticosteroid intolerant or refractory...
February 3, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28147368/combining-therapeutic-drug-monitoring-with-biosimilars-a-strategy-to-improve-the-efficacy-of-biologicals-for-treating-inflammatory-bowel-diseases-at-an-affordable-cost
#12
REVIEW
Ann Gils
BACKGROUND: Biologicals provide a tight disease control but not all patients respond favourably to treatment. Some patients do not respond at all (primary non-responders), while other patients respond initially but show loss of response over time (secondary non-responders). Drug concentrations in the serum of patients can be monitored and correlated with biological, clinical or endoscopic response. Therapeutic thresholds have been defined for infliximab and adalimumab. The European Medicines Agency has approved 3 biosimilars of infliximab and new biosimilars are waiting approval...
2017: Digestive Diseases
https://www.readbyqxmd.com/read/28130330/biosimilar-infliximab-in-inflammatory-bowel-disease-outcomes-of-a-managed-switching-programme
#13
Violeta Razanskaite, Marion Bettey, Louise Downey, Julia Wright, James Callaghan, Miles Rush, Simon Whiteoak, Sarah Ker, Kim Perry, Caron Underhill, Eren Efrem, Iftikar Ahmed, Fraser Cummings
BACKGROUND AND AIMS: Biosimilar infliximab CT-P13 offers the potential for large drug acquisition cost savings. However, there are limited published data regarding its efficacy, safety, and immunogenicity in inflammatory bowel disease [IBD], particularly in switching IBD patients from originator to biosimilar infliximab. We present the outcomes of a service evaluation of switching IBD patients established on originator infliximab to biosimilar, using a managed switching programme funded via a gain share agreement in a UK teaching hospital...
January 27, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28125553/o-005-combination-therapy-with-methotrexate-does-not-change-infliximab-pharmacokinetics-in-children-with-inflammatory-bowel-disease
#14
Valentina Shakhnovich, Leon Van Haandel, Mara Becker, Ryan Funk
BACKGROUND: There remains a question of equipoise regarding the use of anti-TNF-α agent (e.g., infliximab) monotherapy versus combination therapy with immunomodulators (e.g., methotrexate), for the treatment of pediatric Inflammatory Bowel Disease (IBD). The aim of this prospective cross-sectional study was to assess the impact of methotrexate (MTX) on infliximab (IFX) pharmacokinetics (i.e., serum trough levels) and infliximab antibody (anti-IFX) formation in children with IBD. METHODS: Forty-one children with IBD (9-21 yr of age), receiving maintenance IFX infusions as part of their standard-of-medical-care, had serum IFX and anti-IFX concentrations assessed via an established NF-kB luciferase gene-reporter assay (ARUP Laboratories)...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28125552/o-004-application-of-population-pharmacokinetic-modeling-to-develop-individualized-infliximab-dosing-strategies-in-pediatric-crohn-s-disease
#15
Adam Frymoyer, Daniel Hoekman, Tim de Meij, Thalia Hummel, Marc Benninga, Angelika Kindermann, Travis Piester, K T Park
BACKGROUND: Adequate infliximab (IFX) exposure is critical when treating Crohn's disease (CD), and trough concentrations <3 μg/mL are associated with loss of response. However, the pharmacokinetics of IFX are highly variable in children with CD, and this has made IFX dosing challenging in this population. Model-based drug dosing offers the potential for developing individualized dosing strategies. The objective of the current study was to evaluate the predictive performance and clinical utility of a previously published population pharmacokinetic model of IFX when applied to children with CD...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28079601/infliximab-optimization-based-on-therapeutic-drug-monitoring-in-pediatric-ibd
#16
Tatyana Hofmekler, Madeline Bertha, Courtney McCracken, Benadette Martineau, Elizabeth McKinnon, Bess T Schoen, Barbara O McElhanon, Gayathri Tenjarla, Subra Kugathasan, Cary Sauer
BACKGROUND: Infliximab (IFX) is an effective treatment for the management of moderate to severe inflammatory bowel disease (IBD). Low serum IFX levels are associated with the development of antibodies to IFX (ATI) which subsequently associated with clinical relapse and increased morbidity. The purpose of this study is to examine the relationship between dose and interval to IFX level. Secondary goal is to evaluate the relationship between IFX level and ATI in a pediatric IBD population...
June 21, 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27989502/profiles-of-serum-cytokine-levels-in-takayasu-arteritis-patients-potential-utility-as-biomarkers-for-monitoring-disease-activity
#17
Natsuko Tamura, Yasuhiro Maejima, Daisuke Tezuka, Chisato Takamura, Shunji Yoshikawa, Takashi Ashikaga, Kenzo Hirao, Mitsuaki Isobe
BACKGROUND: Takayasu arteritis (TA) is an autoimmune arteritis of unknown etiology. Currently, the erythrocyte sedimentation rate (ESR) and serum C-reactive protein (CRP) levels are widely used to monitor disease activity of TA. However, sometimes it is difficult to reflect inflammatory symptoms in either CRP or ESR values, especially in TA patients with immunosuppressive therapies. Therefore, higher-accuracy biomarkers for evaluating disease activity need to be explored. METHODS AND RESULTS: We examined 21 Japanese patients diagnosed with TA; 17 TA patients were treated with prednisone with or without additional immunosuppressive therapies and the remaining 4 patients were treated with infliximab, a human monoclonal anti-tumor necrosis factor (TNF)-α antibody...
December 15, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27957480/the-utility-of-infliximab-therapeutic-drug-monitoring-among-patients-with-inflammatory-bowel-disease-and-concerns-for-loss-of-response-a-retrospective-analysis-of-a-real-world-experience
#18
Robert A Mitchell, Constantin Shuster, Neal Shahidi, Cherry Galorport, Mari L DeMarco, Gregory Rosenfeld, Robert A Enns, Brian Bressler
Background. Infliximab (IFX) therapeutic drug monitoring (TDM) allows for objective decision making in patients with inflammatory bowel disease (IBD) and loss of response. Questions remain about whether IFX TDM improves outcomes. Methods. Patients with IBD who had IFX TDM due to concerns for loss of response were considered for inclusion. Serum IFX trough concentration and anti-drug antibody (ADA) concentrations were measured. Patients were grouped by TDM results: group 1, low IFX/high ADA; group 2, low IFX/low ADA; group 3, therapeutic IFX...
2016: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27939407/higher-body-mass-index-and-anti-drug-antibodies-predict-the-discontinuation-of-anti-tnf-agents-in-korean-patients-with-axial-spondyloarthritis
#19
Jiwon Hwang, Hye-Mi Kim, Hyemin Jeong, Jaejoon Lee, Joong Kyong Ahn, Eun-Mi Koh, Eun-Suk Kang, Hoon-Suk Cha
OBJECTIVE: The development of anti-drug antibodies (ADAbs) against tumor necrosis factor (TNF) inhibitors is a likely explanation for the failure of TNF-inhibitors in patients with spondyloarthritis (SpA). Our study determined the existence and clinical implications of ADAbs in axial SpA patients. METHODS: According to the Assessment of SpondyloArthritis International Society classification criteria for axial SpA, patients treated with adalimumab or infliximab were recruited consecutively...
November 15, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27936119/anti-tnf-%C3%AE-drugs-differently-affect-the-tnf%C3%AE-stnfr-system-and-monocyte-subsets-in-patients-with-psoriasis
#20
Lara Gibellini, Sara De Biasi, Elena Bianchini, Regina Bartolomeo, Antonella Fabiano, Marco Manfredini, Federica Ferrari, Giuseppe Albertini, Tommaso Trenti, Milena Nasi, Marcello Pinti, Anna Iannone, Carlo Salvarani, Andrea Cossarizza, Giovanni Pellacani
TNF-α has a central role in the development and maintenance of psoriatic plaques, and its serum levels correlate with disease activity. Anti-TNF-α drugs are, however, ineffective in a relevant percentage of patients for reasons that are currently unknown. To understand whether the response to anti-TNF-α drugs is influenced by the production of anti-drug antibodies or by the modulation of the TNFα-TNFα receptor system, and to identify changes in monocyte phenotype and activity, we analysed 119 psoriatic patients who either responded or did not respond to different anti-TNF-α therapies (adalimumab, etanercept or infliximab), and measured plasma levels of TNF-α, TNF-α soluble receptors, drug and anti-drug antibodies...
2016: PloS One
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