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https://www.readbyqxmd.com/read/28809129/effect-of-methotrexate-vitamin-b12-on-dna-methylation-as-a-potential-factor-in-leukemia-treatment-related-neurotoxicity
#1
Victoria J Forster, Alex McDonnell, Rachel Theobald, Jill A McKay
Methotrexate (MTX) is administered to treat childhood acute lymphoblastic leukemia (ALL). It acts by inhibiting dihydrofolate reductase which reduces methyltetrahydrofolate, a key component in one carbon metabolism, thus reducing cell proliferation. Further perturbations to one carbon metabolism, such as reduced vitamin B12 levels via the use of nitrous oxide for sedation during childhood ALL treatment, may increase neurotoxicity risk. With B12 as an enzymatic cofactor, methyltetrahydrofolate is essential to produce methionine, which is critical for DNA methylation...
August 15, 2017: Epigenomics
https://www.readbyqxmd.com/read/28806666/doxorubicin-loaded-environmentally-friendly-carbon-dots-as-a-novel-drug-delivery-system-for-nucleus-targeted-cancer-therapy
#2
Yifang Yuan, Bin Guo, Liying Hao, Na Liu, Yunfeng Lin, Wushuang Guo, Xiaoguang Li, Bin Gu
Chemotherapy is widely applied against various kinds of carcinoma. Generally, chemotherapeutic agents, such as Doxorubicin (DOX), Paclitaxel (PTX), 5-Fluorouracil (5-FU), Methotrexate (MTX), and Vinblastine (VLB) are combined with a view to maximizing their efficacy. Unfortunately, chemotherapeutics are indiscriminate and also kill normal healthy cells, resulting in serious side effects. This non-productive and destructive distribution of chemotherapeutics is regarded as one of the largest problems associated with chemotherapy...
July 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28803127/direct-antioxidant-properties-of-methotrexate-inhibition-of-malondialdehyde-acetaldehyde-protein-adduct-formation-and-superoxide-scavenging
#3
Matthew C Zimmerman, Dahn L Clemens, Michael J Duryee, Cleofes Sarmiento, Andrew Chiou, Carlos D Hunter, Jun Tian, Lynell W Klassen, James R O'Dell, Geoffrey M Thiele, Ted R Mikuls, Daniel R Anderson
Methotrexate (MTX) is an immunosuppressant commonly used for the treatment of autoimmune diseases. Recent observations have shown that patients treated with MTX also exhibit a reduced risk for the development of cardiovascular disease (CVD). Although MTX reduces systemic inflammation and tissue damage, the mechanisms by which MTX exerts these beneficial effects are not entirely known. We have previously demonstrated that protein adducts formed by the interaction of malondialdehyde (MDA) and acetaldehyde (AA), known as MAA-protein adducts, are present in diseased tissues of individuals with rheumatoid arthritis (RA) or CVD...
August 2, 2017: Redox Biology
https://www.readbyqxmd.com/read/28801980/effects-of-proton-pump-inhibitors-and-famotidine-on-elimination-of-plasma-methotrexate-evaluation-of-drug-drug-interactions-mediated-by-organic-anion-transporter-3
#4
Katsuya Narumi, Yu Sato, Masaki Kobayashi, Ayako Furugen, Kumiko Kasashi, Takehiro Yamada, Takanori Teshima, Ken Iseki
Methotrexate (MTX) is an antifolate agent used in the treatment of numerous types of cancer, and eliminated by active tubular secretion via organic anion transporter 3 (OAT3). Gastric antisecretory drugs, such as proton pump inhibitors (PPIs) and histamine H2 receptor antagonists, are widely used among patients with cancer in clinical practice. The aim of the present study was to analyze the potential drug-drug interactions between MTX and gastric antisecretory drugs in high-dose MTX (HD-MTX) therapy. We retrospectively analyzed the impact of PPIs on the plasma MTX concentration on 73 cycles of HD-MTX therapy performed in 43 patients...
August 12, 2017: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/28800968/routine-%C3%AE-hcg-monitoring-for-single-dose-methotrexate-treatment-in-ectopic-pregnancy
#5
Yuxin Dai, Guorui Zhang, Lan Zhu, Jinghe Lang, Zhufeng Liu
STUDY OBJECTIVE: To evaluate an alternative monitoring protocol without D4 β-HCG measurement for predicting the need for a repeated methotrexate (MTX) dose in patients undergoing single-dose MTX therapy for ectopic pregnancy. DESIGN: Single center, Retrospective study (Canadian Task Force classification II-3). SETTING: University-affiliated hospital. PATIENTS: 184 ectopic pregnancy patients who were treated with MTX between January 2009 and December 2016 were included in the study...
August 8, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28800465/oil-based-cyclo-oligosaccharide-nanodevices-for-drug-encapsulation
#6
Jennifer Noro, Ana Loureiro, Filipa Gonçalves, Nuno G Azoia, Seunho Jung, Carla Silva, Artur Cavaco-Paulo
New encapsulation nanodevices were synthesized by emulsification of cyclo-oligosaccharides fully substituted by hydrophobic palmitic chains. These highly hydrophobic compounds, acquire oily-like behaviour at moderate temperatures (∼50°C) and when submitted to ultrasound (US) can undergo emulsification. The improved emulsifying properties of modified cyclo-oligosaccharides are suitable to produce small and narrow sized nanoemulsions with ability to encapsulate amphiphilic molecules. Both encapsulation and delivery of a therapeutic drug, methotrexate (MTX), with amphiphilic character was assessed...
July 25, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28799948/anticancer-drugs-and-the-regulation-of-hedgehog-genes-gli1-and-ptch1-a-comparative-study-in-nonmelanoma-skin-cancer-cell-lines
#7
Uffe H Olesen, Sophie Bojesen, Julie Gehl, Merete Haedersdal
Nonmelanoma skin cancer is the most common cancer in humans, comprising mainly basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). BCC proliferation is highly dependent on the Hedgehog signaling pathway. We aimed to investigate a panel of anticancer drugs with known activity against skin cancer for their therapeutic potential in localized, enhanced topical treatment of SCC and BCC. Cytotoxicity profiles for vismodegib, 5-fluorouracil (5-FU), methotrexate (MTX), cisplatin, bleomycin, and vorinostat were established in terms of half maximal inhibitory concentration values in a panel of immortalized keratinocytes (HaCaT), BCC (UWBCC1 and BCC77015), and SCC (A431 and SCC25) cell lines...
August 9, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28798049/patient-reported-outcomes-from-a-phase-3-study-of-baricitinib-versus-placebo-or-adalimumab-in-rheumatoid-arthritis-secondary-analyses-from-the-ra-beam-study
#8
Edward C Keystone, Peter C Taylor, Yoshiya Tanaka, Carol Gaich, Amy M DeLozier, Anna Dudek, Jorge Velasco Zamora, Jose Arturo Covarrubias Cobos, Terence Rooney, Stephanie de Bono, Vipin Arora, Bruno Linetzky, Michael E Weinblatt
BACKGROUND: To assess the effect of baricitinib on patient-reported outcomes (PROs) in patients with active rheumatoid arthritis and an inadequate response to methotrexate (MTX). METHODS: In this double-blind phase 3 study, patients were randomised 3:3:2 to placebo (n=488), baricitinib 4 mg once daily (n=487), or adalimumab 40 mg biweekly (n=330) with background MTX. PROs included the SF-36, EuroQol 5-D (EQ-5D) index scores and visual analogue scale, Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F), Health Assessment Questionnaire-Disability Index (HAQ-DI), Patient's Global Assessment of Disease Activity (PtGA), patient's assessment of pain and Work Productivity and Activity Impairment Questionnaire-Rheumatoid Arthritis (WPAI-RA), and measures collected in electronic patient daily diaries: duration and severity of morning joint stiffness (MJS), Worst Ttiredness and Worst Joint Pain...
August 10, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28797734/microrna-150-controls-differentiation-of-intraepithelial-lymphocytes-via-tgf-%C3%AE-receptor-ii-regulation
#9
Sang-Hwan Seo, Min Seong Jang, Doo-Jin Kim, Seok-Min Kim, Se-Chan Oh, Cho-Rok Jung, Yunji Park, Sang-Jun Ha, Haiyoung Jung, Young-Jun Park, Suk Ran Yoon, Inpyo Choi, Tae-Don Kim
BACKGROUND: Intraepithelial lymphocytes (IELs) in the intestines play pivotal roles in maintaining the integrity of the mucosa, regulating the immune cells, and protecting against pathogenic invasion. Although several extrinsic factors such as transforming growth factor-β (TGF-β) have been identified to contribute to IEL generation, intrinsic regulatory factors have not been fully determined. OBJECTIVE: Here, we investigated the regulation of IEL differentiation and the underlying mechanisms in mice...
August 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28797151/-comparison-of-the-safety-of-two-treatment-methods-of-cesarean-scar-pregnancy-of-type%C3%A2-and-%C3%A2-in-menopause-within-7-weeks
#10
X Y Wei, X L Yu
Objective: To comparison of the safety of two treatment methods of cesarean scar pregnancy (CSP) of typeⅡ and Ⅲ in menopause within 7 weeks. Methods: Totally 70 cases of CSP of typeⅡ and Ⅲ within 7 weeks of the last menstrual period, hospitalized within Peking University First Hospital from January 2009 to May 2016, had been retrospectively studied in two groups of different treatments. The methotrexate (MTX) treatment group included 37 cases receiving ultrasound-guided complete curettage of uterine cavity combined with MTX therapy, while the uterine artery embolization (UAE) group had 33 cases treated with UAE combined with MTX therapy and subsequent ultrasound-guided complete curettage of uterine cavity...
July 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28793911/igg-fc-galactosylation-predicts-response-to-methotrexate-in-early-rheumatoid-arthritis
#11
Susanna L Lundström, Aase H Hensvold, Dorothea Rutishauser, Lars Klareskog, A Jimmy Ytterberg, Roman A Zubarev, Anca I Catrina
BACKGROUND: Methotrexate (MTX) is the standard first-line therapy in rheumatoid arthritis (RA) with variable clinical efficacy that is difficult to predict. The glycosylation status of immunoglobulin G (IgG) is altered in RA and influenced by MTX treatment. We aimed to further investigate if IgG glycosylation in untreated early RA can predict therapeutic response to MTX. METHODS: We used a shotgun proteomic approach to screen for the Fc glycopeptides in the serum of 12 control subjects and 59 untreated patients with early RA prior to and following MTX initiation...
August 9, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28790807/non-persistence-and-non-adherence-to-mtx-therapy-in-patients-with-rheumatoid-arthritis-a-retrospective-cohort-study-based-on-german-ra-patients
#12
Sabrina Müller, Thomas Wilke, Andreas Fuchs, Ulf Maywald, Jan-Paul Flacke, Harald Heinisch, Klaus Krüger
OBJECTIVE: This study aimed to assess the level of nonpersistence (NP) and nonadherence (NA) to methotrexate (MTX) therapy in German patients with rheumatoid arthritis (RA). MATERIALS AND METHODS: Based on German claims data, RA patients who received a MTX therapy (subgroup: treatment-naive patients) were analyzed. NP was defined as treatment gap >12 weeks. Regarding NA, it is the overall medication possession ratio (MPR) during an observational period of 12 or 24 months after therapy, and the MPR is calculated only for the periods of therapy continuation; NA was defined as MPR <80%...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28789582/long-term-drug-survival-and-predictor-analysis-of-the-whole-psoriatic-patient-population-on-biological-therapy-in-hungary
#13
Lilla Pogácsás, András Borsi, Péter Takács, Éva Remenyik, Lajos Kemény, Sarolta Kárpáti, Péter Holló, Norbert Wikonkál, Rolland Gyulai, Zsuzsanna Károlyi, Pál Rakonczai, Tamás Balázs, Andrea Szegedi
Persistence is an important component of therapeutic success, which depends on a variety of factors. Persistence measured under optimal conditions during clinical trials does not necessarily coincide with persistence observed in the real-world settings. The aim of the present study was to compare persistence rate of TNF-alpha inhibitors and interleukin 12/23 inhibitor in all psoriasis patients in Hungary, as well as to analyze the predictors of persistence. Data collected from 1263 patients over a period of 46 months were subjected to a retrospective analysis...
August 9, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28777835/effect-of-methotrexate-on-an-in-vitro-patient-derived-model-of-proliferative-vitreoretinopathy
#14
Dhanesh Amarnani, Arturo Israel Machuca-Parra, Lindsay L Wong, Christina K Marko, James A Stefater, Tomasz P Stryjewski, Dean Eliott, Joseph F Arboleda-Velasquez, Leo A Kim
Purpose: The purpose of this study was to develop a method for isolating, culturing, and characterizing cells from patient-derived membranes in proliferative vitreoretinopathy (PVR) to be used for drug testing. Methods: PVR membranes were obtained from six patients with grade C PVR. Membrane fragments were analyzed by gross evaluation, fixed for immunohistologic studies to establish cell identity, or digested with collagenase II to obtain single cell suspensions for culture...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28770639/the-preventive-effects-of-nanopowdered-red-ginseng-on-collagen-induced-arthritic-mice
#15
Yun-Kyung Lee, Kyung-Hoon Choi, Hae-Soo Kwak, Yoon Hyuk Chang
This study was carried out to investigate the efficiency of red ginseng nanopowder in preventing collagen-induced arthritis (CIA) in mice. The mice were divided into five groups: normal group (no immunisation), control (CIA), powdered red ginseng (PRG), nanopowdered red ginseng (NRG) and methotrexate (MTX). Administering MTX, PRG and NRG to arthritic mice significantly decreased spleen indexes, clinical and histological scores compared to control group. Serum analysis of NRG and MTX groups showed a reduction in the cytokines such as the levels of tumour necrosis factor alpha (TNF-α), interleukin 6 (IL-6) and interleukin 1β (IL-1β) in comparison to PRG group...
August 3, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28766398/assessing-joint-destruction-in-the-knees-of-patients-with-rheumatoid-arthritis-by-using-a-semi-automated-software-for-magnetic-resonance-imaging-therapeutic-effect-of-methotrexate-plus-etanercept-compared-with-methotrexate-monotherapy
#16
Hiroyuki Oka, Yuho Kadono, Satoru Ohashi, Tetsuro Yasui, Kumiko Ono, Ko Matsudaira, Jinju Nishino, Sakae Tanaka
OBJECTIVES: To evaluate the prevention of knee joint destruction and clinical efficacy of methotrexate (MTX) plus etanercept (ETN) compared with MTX monotherapy in patients with rheumatoid arthritis (RA) by using semi-automated software for magnetic resonance imaging (MRI) scan analysis. MATERIALS AND METHODS: This study enrolled patients with active moderate-to-severe RA who displayed an inadequate response to oral MTX at screening. Patients were assigned to receive either MTX plus ETN or MTX monotherapy (≥10 mg/week)...
August 2, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28765712/mean-cost-per-number-needed-to-treat-with-tocilizumab-plus-methotrexate-versus-abatacept-plus-methotrexate-in-the-treatment-of-rheumatoid-arthritis-in-patients-previously-treated-with-methotrexate
#17
Maurizio Benucci, Roberto Ravasio, Arianna Damiani
INTRODUCTION: Biological disease-modifying antirheumatic drugs are particularly recommended for use in patients who are poor responders, are intolerant to conventional disease-modifying antirheumatic drugs (cDMARDs), or in whom continued treatment with cDMARDs is deemed inappropriate. We estimated the efficacy and treatment costs associated with the use of tocilizumab (TCZ) plus methotrexate (Mtx) versus abatacept (ABT) plus Mtx in the treatment of rheumatoid arthritis (RA) in patients previously treated with Mtx...
2017: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/28763751/berberine-ameliorates-methotrexate-induced-liver-injury-by-activating-nrf2-ho-1-pathway-and-ppar%C3%AE-and-suppressing-oxidative-stress-and-apoptosis-in-rats
#18
Ayman M Mahmoud, Walaa G Hozayen, Shimaa M Ramadan
Berberine (BBR) is a natural isoquinoline alkaloid with very impressive health benefits. It is one of the most effective natural supplements available; however, its ameliorative mechanism against methotrexate (MTX)-induced liver injury is not well defined. This study investigated the protective effect of BBR against MTX hepatotoxicity, focusing on its ability to attenuate oxidative stress and apoptosis and to activate nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/heme oxygenase-1 (HO-1) signaling and peroxisome proliferator activated receptor gamma (PPARγ)...
July 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28761829/effects-of-pomegranate-punica-granatum-l-seed-and-peel-methanolic-extracts-on-oxidative-stress-and-lipid-profile-changes-induced-by-methotrexate-in-rats
#19
Farideh Doostan, Roxana Vafafar, Parvin Zakeri-Milani, Aliasghar Pouri, Rogayeh Amini Afshar, Mehran Mesgari Abbasi
Purpose: Methotrexate (MTX) is prescribed in many diseases and can result in oxidative stress (OS) followed by injuries in some tissues. Antioxidants administration are effective in reducing OS. Pomegranate exhibits high anti-oxidant capacities. This study investigated whether pomegranate seed and peel methanolic extracts (PSE and PPE) could protect against MTX-induced OS and lipid profile changes in rats. Methods: Forty-eight rats were randomly divided into 6 groups: control group (normal salin), PSE group (500 mg/kg, orally), PPE group (500 mg/kg, orally), MTX group (10 mg/kg, IM), MTX and PSE group, and MTX and PPE group...
June 2017: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28761815/a-pilot-study-on-using-rapamycin-carrying-synthetic-vaccine-particles-svp-in-conjunction-with-enzyme-replacement-therapy-to-induce-immune-tolerance-in-pompe-disease
#20
Han-Hyuk Lim, Haiqing Yi, Takashi K Kishimoto, Fengqin Gao, Baodong Sun, Priya S Kishnani
A major obstacle to enzyme replacement therapy (ERT) with recombinant human acid-α-glucosidase (rhGAA) for Pompe disease is the development of high titers of anti-rhGAA antibodies in a subset of patients, which often leads to a loss of treatment efficacy. In an effort to induce sustained immune tolerance to rhGAA, we supplemented the rhGAA therapy with a weekly intravenous injection of synthetic vaccine particles carrying rapamycin (SVP-Rapa) during the first 3 weeks of a 12-week course of ERT in GAA-KO mice, and compared this with three intraperitoneal injections of methotrexate (MTX) per week for the first 3 weeks...
December 2017: Molecular Genetics and Metabolism Reports
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