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https://www.readbyqxmd.com/read/29350902/hierarchically-self-assembled-supramolecular-host-guest-delivery-system-for-delivery-of-chemotherapeutics-to-drug-resistant-cancer-tumours
#1
Hongwei Cheng, Xiaoshan Fan, Xiaoyuan Wang, Enyi Ye, Xian Jun Loh, Zibiao Li, Yun-Long Wu
In this report, a new star-like copolymer -CD-g-(PNIPAAm-b-POEGA)x consisting of a -CD core, grafted with temperature-responsive poly(N-isopropylacrylamide) (PNIPAAm) and biocompatible poly(oligo(ethylene glycol) acrylate) (POEGA) in a block copolymer of the arms, was used to deliver chemotherapeutics to drug resistant cancer tumours. The first step of the self-assembly process involves the encapsulation of chemotherapeutics through host-guest inclusion complexation between the -cyclodextrin cavity and the anti-cancer drug...
January 19, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29350496/venoocclusive-disease-due-to-chemotherapy-for-pediatric-acute-lymphoblastic-leukemia-is-associated-with-increased-levels-of-plasminogen-activator-inhibitor-1
#2
Margherita Mauro, Graziella Saggiorato, Maria Teresa Sartori, Giuseppe Gallo, Massimiliano De Bortoli, Elisa Bonetti, Ada Zaccaron, Virginia Vitale, Rita Balter, Matteo Chinello, Simone Cesaro
We describe three cases of sinusoidal obstruction syndrome/venoocclusive disease (SOS) in pediatric patients with acute lymphoblastic leukemia (ALL). All three episodes occurred during or just after the induction or reinduction phase of treatment based on prednisone/dexamethasone, vincristine, daunorubicin, and pegylated-l-asparaginase. SOS episodes were categorized as mild/moderate and resolved in 7, 10, and 16 days using supportive measures or defibrotide therapy. In all three episodes, the clinical diagnosis of SOS was associated with a significant increase in plasminogen-activator inhibitor-1 (PAI-1) that reduced with patient clinical improvement...
January 19, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29350064/comparison-of-hyaluronic-acid-based-micelles-and-polyethylene-glycol-based-micelles-on-reversal-of-multidrug-resistance-and-enhanced-anticancer-efficacy-in-vitro-and-in-vivo
#3
Jinling Wang, Ying Li, Lifang Wang, Xiaohui Wang, Pengfei Tu
Polyethylene glycol (PEG)-based block copolymer micelles and hyaluronic acid (HA)-based grafted copolymer micelles have been widely investigated in chemotherapy. In this study, to evaluate the differences among HA-based grafted polymer micelles, PEG-based block polymer micelles and the mixed of these two micelles in enhancing antitumor effects and overcoming MDR, two amphiphilic vitamin E succinate (VES) derivatives, HA VES (HA-g-VES) and PEG 2000 VES (TPGS2k), were applied as nanocarriers to prepare HA-VES micelles (HA-PMs), TPGS2k micelles (TPGS2k-PMs) and the mixed micelles (HA/TPGS2k-PMs) for the co-delivery of doxorubicin (DOX) and curcumin (Cur)...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29343250/evaluation-of-health-status-in-patients-with-hepatitis-c-treated-with-and-without-interferon
#4
R Ragusa, G Bertino, A Bruno, E Frazzetto, F Cicciu, G Giorgianni, L Lupo
BACKGROUND: The evolution of technology in healthcare has increased the health care's costs and, the universal healthcare systems, in developed countries, need to ensure proper allocation of resources. Thus, the major issue is assessing the effectiveness of new medical technologies. The evaluation of quality of life in response to new treatments has become a key indicator in chronic conditions for which medical interventions are evaluated not only in terms of increasing the number of expected life years but also in terms of increasing quality of life...
January 17, 2018: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/29341911/an-efficient-pegylated-gene-delivery-system-with-improved-targeting-synergism-between-octaarginine-and-a-fusogenic-peptide
#5
Ikramy A Khalil, Hideyoshi Harashima
Because of their ability to translocate different cargos into cells, arginine-rich cell penetrating peptides (CPPs) are promising vehicles for drug and gene delivery. The use of CPP-based carriers, however, is hampered by the lack of specificity and by interactions with negative serum components. Polyethylene glycol (PEG) is used to decrease such non-specific interactions, albeit its use is associated with reduced transfection efficiency. In this study, we describe the development of PEGylated CPP-based gene carrier with an improved targeting and a high transfection activity...
January 13, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29341179/better-characterization-of-vinflunine-pharmacokinetics-variability-and-exposure-toxicity-relationship-to-improve-its-use-analyses-from-18-trials
#6
A Schmitt, L Nguyen, G Zorza, P Ferré, A Pétain
AIMS: Vinflunine is a novel tubulin-targeted inhibitor indicated as a single agent for the treatment of bladder cancers after failure of prior platinum-based therapy. Its pharmacokinetics (PK) and pharmacodynamics (PD) have been independently characterized through several phase I and phase II studies. However, no global pharmacometric analysis had been conducted yet. METHODS: Vinflunine concentrations and safety data from 18 phase I and phase II studies were used to conduct population PK and PK/PD analysis, using Nonmem...
January 17, 2018: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29337265/99mtc-vinorelbine-tartrate-loaded-spherulites-lung-disposition-study-in-sprague-dawley-rats-by-gamma-scintigraphy
#7
Rahul Dhande, Amit Tyagi, Rakesh Kumar Sharma, Hetal Thakkar
Vinorelbine Tartrate (VLB) is the first line chemotherapeutic agent for treatment of Non-Small Cell Lung Cancer, whose non-specific distribution causes unwanted side effects. The aim of the present investigation was to formulate VLB loaded spherulites intended for targeting the lung. Spherulites were composed of Soyabean Phosphatidylcholine (SPC), Cholesterol (Chol), Potassium oleate and Mannitol. Lipid film prepared using SPC, Chol and Potassium oleate, was dispersed in aqueous phase comprising Mannitol and VLB, followed by controlled shearing and extrusion...
January 11, 2018: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29337155/nvr-3-778-plus-pegylated-interferon-%C3%AE-treatment-for-chronic-hbv-infections-could-1-1-3
#8
EDITORIAL
John E Tavis, Elena Lomonosova
No abstract text is available yet for this article.
January 11, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29335182/microstructures-and-performances-of-pegylated-polysulfone-membranes-from-an-in-situ-synthesized-solution-via-vapor-induced-phase-separation-approach
#9
Li-Jing Zhu, Hai-Ming Song, Gang Wang, Zhi-Xiang Zeng, Cun-Ting Zhao, Qun-Ji Xue, Xiao-Ping Guo
In situ pegylated (PEGylated) microporous membranes have been extensively reported using poly(ethylene glycol) (PEG)-based polymers as blending additives. Alternatively, free standing PEGylated polysulfone (PSf) membranes with excellent hydrophilicity and antifouling ability were directly fabricated from polysulfone/poly(ethylene glycol) methyl ether methacrylate (PSf/PEGMA) solutions after in situ cross-linking polymerization without any treatment via vapor induced phase separation (VIPS) process for the first time...
January 9, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29334805/delivery-of-radix-ophiopogonis-polysaccharide-via-sucrose-acetateisobutyrate-based-in-situ-forming-systems-alone-or-combined-with-itsmono-pegylation
#10
LiNa Wang, Xiao Zheng, Fei Wu, Lan Shen, Xiao Lin, Yi Feng
This work aimed to achieve long-lasting delivery of radix ophiopogonis polysaccharide (ROP) by sucrose acetate isobutyrate (SAIB)-based in situ forming systems (ISFSs) alone or combined with mono-PEGylation of ROP. When the '90%SAIB/10% solvent' system was used, the mean residence time (MRT) of ROP was prolonged by 4.3 5 ∼ 7.00 times and the initial release rate was reduced significantly. However, this system was only suitable for days-long sustained release of ROP in short-term therapy. As to the 'SAIB/additives/solvent' system containing mono-PEGylated ROP, the results indicated that SAIB/poly(d,l-lactide-co-glycolide) (PLGA)/N-methyl-2-pyrrolidone (NMP) was superior to SAIB/polylactic acid (PLA)/NMP and SAIB/PLA/ethanol in controlled release...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29329709/characterization-of-singly-and-multiply-pegylated-insulin-isomers-by-reversed-phase-ultra-performance-liquid-chromatography-interfaced-with-ion-mobility-mass-spectrometry
#11
Selim Gerislioglu, Scott R Adams, Chrys Wesdemiotis
Conjugation of poly(ethylene glycol) (PEG) to protein drugs (PEGylation) is increasingly utilized in the biotherapeutics field because it improves significantly the drugs' circulatory half-life, solubility, and shelf-life. The activity of a PEGylated drug depends on the number, size, and location of the attached PEG chain(s). This study introduces a 2D separation approach, including reversed-phase ultra-performance liquid chromatography (RP-UPLC) and ion mobility mass spectrometry (IM-MS), in order to determine the structural properties of the conjugates, as demonstrated for a PEGylated insulin sample that was prepared by random amine PEGylation...
April 3, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29328881/factors-affecting-the-virological-response-among-chronic-hepatitis-c-virus-patients-in-yemen
#12
Zaid Mutahar Mohammed Alezzi, Ayman Yosry Abd El Rehim, Waleed Fouad Fathallah, Mansour Ali Alamrani, Fouad Hezam Othman
Hepatitis C virus (HCV) infection is increasingly seen as a major public health problem, threat, and concern worldwide. In Yemen about 1.7% of the population is infected with chronic hepatitis C. This study aimed to detect the predictors for response to pegylated interferon and ribavirin (Peg-IFN/RBV) in chronic HCV Yemeni patients. The study was conducted on 100 patients with chronic HCV who received Peg-IFN/RBV in the 48th Military Hospital in Sana'a Yemen, from 2011 to 2013. All patients were subjected to complete history taking, thorough clinical examinations, routine laboratory investigation, and abdominal ultrasonography...
January 2018: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/29325289/-optimal-treatment-regimen-for-patients-with-hbeag-positive-chronic-hepatitis-b-after-suboptimal-response-to-24-weeks-of-peg-ifn-%C3%AE-2a
#13
X D Luo, X P Chen, X F Chen
Objective: To investigate the optimal treatment regimen for patients with HBeAg-positive chronic hepatitis B (CHB) after suboptimal response to 24 weeks of pegylated interferon (Peg-IFN) α-2a. Methods: A total of 188 patients with HBeAg-positive CHB who had suboptimal response to 24 weeks of Peg-IFN α-2a were randomly divided into entecavir group (n = 93) and telbivudine group (n = 95). The two groups received entecavir 0.5 mg/d and telbivudine 0.6 g/d, respectively, for 208 weeks. After 208 weeks of treatment, the following indices were assessed: HBeAg clearance rate and seroconversion rate, hepatitis B virus (HBV) DNA clearance rate (HBV DNA < 500 IU/ml), safety, and drug resistance rate...
December 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29325276/-a-clinical-study-of-antiviral-therapy-for-patients-with-compensated-hepatitis-c-cirrhosis
#14
Z W Xie, J P Li, Y J Guan, X Y Zhang, F X Guo, B B Chen, Calvin Q Pan
Objective: To investigate the effect of antiviral therapy on the progression of liver cirrhosis and related predictive factors through a retrospective analysis of patients with compensated hepatitis C cirrhosis. Methods: The patients with compensated hepatitis C cirrhosis who were treated in our hospital from 2004 to 2015 were divided into sustained virologic response (SVR) group, non-SVR (NSVR) group, and untreated group. The baseline features of patients with or without liver cirrhosis were compared to identify the predictive factors for the progression of liver cirrhosis...
November 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29322302/the-superiority-of-sucrose-cushion-centrifugation-to-ultrafiltration-and-pegylation-in-generating-high-titer-lentivirus-particles-and-transducing-stem-cells-with-enhanced-efficiency
#15
Mahdi Eskandarian Boroujeni, Mossa Gardaneh
Viral gene delivery is hailed as a great milestone in gene-based therapeutic approaches. The human immunodeficiency virus-derived lentiviral vectors (LVs) are advantageous in infecting both dividing and non-dividing cells leading to continuous expression of transgenes. A variety of protocols are available for concentration of LVs. We primarily generated our internal ribosome entry site (IRES)-based LVs. Virus titration and transduction efficiency were compared between various strategies that included sucrose cushion centrifugation (SCC), protein column ultrafiltration and polyethylene glycol precipitation...
January 10, 2018: Molecular Biotechnology
https://www.readbyqxmd.com/read/29321547/polycythemia-vera-treatment-algorithm-2018
#16
REVIEW
Ayalew Tefferi, Alessandro M Vannucchi, Tiziano Barbui
Recently reported mature survival data have confirmed the favorable prognosis in polycythemia vera (PV), with an estimated median survival of 24 years, in patients younger than age 60 years old. Currently available drugs for PV have not been shown to prolong survival or alter the natural history of the disease and are instead indicated primarily for prevention of thrombosis. Unfortunately, study endpoints that are being utilized in currently ongoing clinical trials in PV do not necessarily target clinically or biologically relevant outcomes, such as thrombosis, survival, or morphologic remission, and are instead focused on components of disease palliation...
January 10, 2018: Blood Cancer Journal
https://www.readbyqxmd.com/read/29319069/utility-of-pegylated-dithiolane-ligands-for-direct-synthesis-of-water-soluble-au-ag-pt-pd-cu-and-aupt-nanoparticles
#17
Eunkeu Oh, James B Delehanty, Christopher A Klug, Kimihiro Susumu, W Russ Algar, Ramasis Goswami, Igor L Medintz
Water soluble metallic nanoparticles are being developed for a variety of roles ranging from catalysis to drug delivery and as potential contrast agents. We demonstrate direct synthesis of high-quality water-soluble Au, Ag, Pt, Pd, Cu and alloyed AuPt nanoparticles as well as ligand-exchange of FePt, cubic Pt and Au/Pt core/shell nanoparticles using bidentate dithiolane PEG as a universal ligand. Simple chemistry can greatly expand the applications of metal nanoparticles.
January 10, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29316059/cost-effectiveness-analyses-of-anti-hcv-treatments-using-qol-scoring-among-patients-with-chronic-liver-disease-in-the-hiroshima-prefecture
#18
Terumi Kaishima, Tomoyuki Akita, Masayuki Ohisa, Kazuaki Sakamune, Akemi Kurisu, Aya Sugiyama, Hiroshi Aikata, Kazuaki Cyayama, Junko Tanaka
AIM: We estimated the cost-effectiveness of direct acting antiviral treatment (DAA) compared to triple therapy (simeprevir, pegylated interferon-α and ribavirin) (scenario-1) and Peg-IFN+RBV(scenario-2) and non-antiviral therapy(scenario-3). METHODS: The Cost-effectiveness was evaluated as incremental cost-effectiveness ratios (ICERs) using direct costs and indirect costs which included loss of wages during the patient's lifetime due to early death caused by viral hepatitis infection...
January 5, 2018: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/29316039/treatment-of-hcv-infection-in-poland-at-the-beginning-of-the-interferon-free-era-the-epiter-2-study
#19
Robert Flisiak, Dorota Zarębska-Michaluk, Ewa Janczewska, Agnieszka Staniaszek, Andrzej Gietka, Włodzimierz Mazur, Magdalena Tudrujek, Krzysztof Tomasiewicz, Teresa Belica-Wdowik, Barbara Baka-Ćwierz, Dorota Dybowska, Waldemar Halota, Beata Lorenc, Marek Sitko, Aleksander Garlicki, Hanna Berak, Andrzej Horban, Iwona Orłowska, Krzysztof Simon, Łukasz Socha, Marta Wawrzynowicz-Syczewska, Jerzy Jaroszewicz, Zbigniew Deroń, Agnieszka Czauż-Andrzejuk, Jolanta Citko, Rafał Krygier, Anna Piekarska, Łukasz Laurans, Witold Dobracki, Jolanta Białkowska, Olga Tronina, Małgorzata Pawłowska
The aim of the EpiTer-2 study was to analyze patient characteristics and their medication for HCV infection in Poland at the beginning of the interferon-free era. Analysis of data of HCV infected patients treated during the initial period of availability of interferon-free regimens in Poland, who started therapy after 1 July 2015 and had available an efficacy evaluation report before 30 June 2017 was undertaken. A total of 2879 patients with chronic hepatitis C were entered, including 46% with liver cirrhosis...
January 6, 2018: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/29314573/higher-efficacy-of-pegylated-interferon-alpha-2b-add-on-therapy-in-hbeag-positive-chronic-hepatitis-b-patients-on-tenofovir-monotherapy
#20
Ankur Jindal, Ashish Kumar Vyas, Devesh Kumar, Guresh Kumar, Manoj Kumar Sharma, Shiv Kumar Sarin
BACKGROUND: Monotherapy with Peg-IFNα or nucleos(t)ide analogues(NA) currently approved for treating chronic hepatitis B(CHB) have limited efficacy. Studies on combination of Peg-IFN-α/NA have shown conflicting results. We investigated whether sequential adding-on Peg-IFNα to tenofovir enhances serological response rates. METHODS: Treatment naïve, HBeAg-positive CHB patients with moderately elevated ALT(48 to 200IU/mL) were started on tenofovir(300 mg/day) and enrolled at week 12 in 1:1 ratio to either receive Peg-IFNα2b add-on(1...
January 4, 2018: Hepatology Research: the Official Journal of the Japan Society of Hepatology
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