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https://www.readbyqxmd.com/read/28643902/modulation-of-antitumor-immunity-contributes-to-the-enhanced-therapeutic-efficacy-of-liposomal-oxaliplatin-in-mouse-model
#1
Taro Shimizu, Amr S Abu Lila, Miho Nishio, Yusuke Doi, Hidenori Ando, Masami Ukawa, Yu Ishima, Tatsuhiro Ishida
Immune modulation of the tumor microenvironment has been reported to participate to the therapeutic efficacy of many chemotherapeutic agents. Recently, we reported that liposomal encapsulation of oxaliplatin (l-OHP) within PEGylated liposomes conferred a superior antitumor efficacy to free l-OHP in murine colorectal carcinoma-bearing mice via permitting preferential accumulation of the encapsulated drug within tumor tissue. However, the contribution of the immune-modulatory properties of liposomal l-OHP and/or free l-OHP to the overall antitumor efficacy was not elucidated...
June 23, 2017: Cancer Science
https://www.readbyqxmd.com/read/28643457/eradication-of-hepatitis-c-virus-profoundly-prolongs-survival-in-hepatocellular-carcinoma-patients-receiving-transarterial-chemoembolization
#2
Wei Teng, Yi-Chung Hsieh, Kar-Wai Lui, Wei-Ting Chen, Chien-Fu Hung, Chien-Hao Huang, Yi-Cheng Chen, Wen-Juei Jeng, Chen-Chun Lin, Chun-Yen Lin, Shi-Ming Lin, I-Shyan Sheen
Adjuvant pegylated interferon plus ribavirin treatment (PegIFN/RBV) reduces recurrence and prolongs survival in early stage hepatocellular carcinoma (HCC) patients with chronic hepatitis C (CHC) infection receiving resection or ablation. However, the impact of antiviral therapy in intermediate and advanced stage of CHC-HCC patients is uncertain. This study aimed to investigate the impact PegIFN/RBV treatment on recurrence free interval and survival in HCC patients receiving transarterial chemoembolization (TACE) METHODS: From 2010 to 2013, 274 CHC patients from a 1073-patients based cohort composed of freshly diagnosed HCC and receiving TACE treatment the Chang Gung Memorial Hospital, Linkou Medical Center were recruited...
June 22, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28642203/developments-of-polysorbate-tween-based-microemulsions-preclinical-drug-delivery-toxicity-and-antimicrobial-applications
#3
REVIEW
Gurpreet Kaur, S K Mehta
The present review deals with the progress of Polysorbates (Tween) based microemulsions in drug delivery. PEGylated Sorbitan Fatty Acid Esters (Tweens/Polysorbates) are one of the most used non-ionic surfactants. Particularly Polysorbates based microemulsion has been widely used for enhancing solubilization of poorly soluble drugs. This article deals with underlying the preclinical factors which affect the solubilization efficacy of Tween formulations, implication of pharmaceutically accepted vectors in terms of absorption, bioavailability, biological fate and potential toxicity...
June 19, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28639001/sanguinate%C3%A2-pegylated-carboxyhemoglobin-bovine-improves-cerebral-blood-flow-to-vulnerable-brain-regions-at-risk-of-delayed-cerebral-ischemia-after-subarachnoid-hemorrhage
#4
Rajat Dhar, Hemant Misra, Michael N Diringer
BACKGROUND: Delayed cerebral ischemia (DCI) after subarachnoid hemorrhage (SAH) has been linked to focal reductions in cerebral blood flow (CBF) and microvascular impairments in oxygen delivery. Effective therapies that restore flow and oxygen transport to vulnerable brain regions are currently lacking. SANGUINATE is a dual-action carbon monoxide-releasing and hemoglobin-based oxygen transfer agent with efficacy in animal models of focal brain ischemia and tolerability in patients with sickle cell disease...
June 21, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28638484/surface-de-pegylation-controls-nanoparticle-mediated-sirna-delivery-in-vitro-and-in-vivo
#5
Xi Zhu, Wei Tao, Danny Liu, Jun Wu, Zilei Guo, Xiaoyuan Ji, Zameer Bharwani, Lili Zhao, Xiaoping Zhao, Omid C Farokhzad, Jinjun Shi
The present work proposes a unique de-PEGylation strategy for controllable delivery of small interfering RNA (siRNA) using a robust lipid-polymer hybrid nanoparticle (NP) platform. The self-assembled hybrid NPs are composed of a lipid-poly(ethylene glycol) (lipid-PEG) shell and a polymer/cationic lipid solid core, wherein the lipid-PEG molecules can gradually dissociate from NP surface in the presence of serum albumin. The de-PEGylation kinetics of a series of different lipid-PEGs is measured with their respective NPs, and the NP performance is comprehensively investigated in vitro and in vivo...
2017: Theranostics
https://www.readbyqxmd.com/read/28638221/prevalence-of-ifnl3-rs4803217-single-nucleotide-polymorphism-and-clinical-course-of-chronic-hepatitis-c
#6
Bogna Świątek-Kościelna, Ewelina Kałużna, Ewa Strauss, Jerzy Nowak, Iwona Bereszyńska, Ewelina Gowin, Jacek Wysocki, Jolanta Rembowska, Dominika Barcińska, Iwona Mozer-Lisewska, Danuta Januszkiewicz-Lewandowska
AIM: To evaluate the association of IFNL3 (IL28B) SNP rs4803217 with severity of disease and treatment outcome in chronic hepatitis C (CHC). METHODS: The study enrolled 196 CHC Polish patients (82 women and 114 men in age 20-64) infected with hepatitis C virus (HCV) genotype 1. They were treatment naïve and qualified to pegylated interferon alpha (PEG-IFN-α) and ribavirin (RBV) therapy. The analyzed baseline parameters included: degree of inflammation, stage of fibrosis, viral load as well as alanine aminotransferase (ALT), asparagine aminotransferase (AST) and total bilirubin (TBIL)...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28635613/association-of-the-s267f-variant-on-ntcp-gene-and-treatment-response-to-pegylated-interferon-in-patients-with-chronic-hepatitis-b-a-multicentre-study
#7
Kessarin Thanapirom, Sirinporn Suksawatamnuay, Wattana Sukeepaisarnjaroen, Sombat Treeprasertsuk, Tawesak Tanwandee, Phunchai Charatcharoenwitthaya, Satawat Thongsawat, Apinya Leerapun, Teerha Piratvisuth, Rattana Boonsirichan, Chalermrat Bunchorntavakul, Chaowalit Pattanasirigool, Bubpha Pornthisarn, Supoj Tuntipanichteerakul, Ekawee Sripariwuth, Woramon Jeamsripong, Teeranan Sanpanjit, Yong Poovorawan, Piyawat Komolmit
BACKGROUND: Sodium taurocholate co-transporting polypeptide (NTCP) is a cell receptor for hepatitis B virus (HBV). The S267F variant on the NTCP gene is inversely associated with the chronicity of HBV infection, progression to cirrhosis and hepatocellular carcinoma in East Asian populations. This aim of this study was to determine whether the S267F variant was associated with response to pegylated interferon (Peg-IFN) in patients with chronic HBV infection. METHODS: Two hundred and fifty-seven patients with chronic HBV, treated with Peg-IFN for 48 weeks, were identified from 13 tertiary hospitals included in the hepatitis B database of the Thai Association for the Study of the Liver (THASL)...
June 21, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28634687/noninvasive-serum-models-to-predict-significant-liver-related-events-in-chronic-hepatitis-c
#8
Ragesh Babu Thandassery, Saad Al Kaabi, Madiha E Soofi, Benjamin Tharian, Rajvir Singh
AIM: We aim to compare 20 noninvasive fibrosis scores (NIFS), derived from routine blood tests, for predicting significant liver-related adverse events (SLRE) in patients with chronic hepatitis C (CHC) after anti-viral treatment (AVT) with the goal to identify independent predictors for these outcomes. METHODS: From 1605 patients who received AVT (pegylated interferon and ribavirin) from January 2002 to June 2014, 20 NIFS were calculated from routine blood tests prior to AVT...
June 20, 2017: Hepatology International
https://www.readbyqxmd.com/read/28634139/ocular-disposition-of-ciprofloxacin-from-topical-pegylated-nanostructured-lipid-carriers-effect-of-molecular-weight-and-density-of-poly-ethylene-glycol
#9
Sai Prachetan Balguri, Goutham R Adelli, Karthik Yadav Janga, Prakash Bhagav, Soumyajit Majumdar
Ciprofloxacin (CIP) is an antibacterial agent prescribed for the treatment of ocular infections. The objective of the present project is to investigate the effect of surface PEG functionalization of the Nano structured lipid carriers (NLCs) on formulation stability, ocular penetration and distribution. CIP NLCs were tested with different molecular weight (poly ethylene glycol) PEGs ranging from (2K to 20K) grafted onto the phospholipid and with different chain lengths (14-18 carbons) of phospholipids derivatized with PEG-2K...
June 17, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28632139/peptide-functionalized-gold-nanoparticles-the-influence-of-ph-on-binding-efficiency
#10
Emma Harrison, Jeremy Hamilton, Manuel Montero, Dorian Dixon
We report herein on the synthesis of mixed monolayer gold nanoparticles (AuNPs) capped with both polyethylene glycol (PEG) and one of three peptides. Either a receptor-mediated endocytosis (RME) peptide, an endosomal escape pathway (H5WYG) peptide or the Nrp-1 targeting RGD peptide (CRGDK) labelled with FITC. All three peptides have a thiol containing cysteine residue which can be used to bind the peptides to the AuNPs. In order to investigate the influence of pH on peptide attachment, PEGylated AuNPs were centrifuged, the supernatant removed, and the nanoparticles were then re-suspended in a range of pH buffer solutions above, below and at the respective isoelectric points of the peptides before co-functionalization...
June 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28631775/-innovations-in-the-treatment-of-ovarian-cancer-analysis-of-the-therapeutic-development-from-platinum-to-immunotherapy
#11
Gesuino Angius, Pierangela Sepe, Anselmo Papa, Silverio Tomao, Federica Tomao
Ovarian cancer is the seventh most common cancer in women. The therapeutic approach provides for an appropriate integration between surgery and chemotherapy. Surgery is an important step for diagnosis, staging and therapy, aiming at the complete cytoreduction of all macroscopic visible disease. At the moment, adjuvant and first-line chemotherapy has as a standard the carboplatin-paclitaxel combination. Further, the addition of bevacizumab in the advanced stage (IIIB-IV) is strongly recommended. Despite the initial effectiveness, however, 70-80% of patients develop relapsed disease within the first two years and require subsequent treatment lines that have palliative, rather than curative purposes and that seek to reach a chronic state for the disease...
June 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28627943/the-efficacy-and-safety-of-adjuvant-interferon-alfa-therapy-in-the-evolving-treatment-landscape-for-resected-high-risk-melanoma
#12
Van Anh Trinh, Chrystia Zobniw, Wen-Jen Hwu
Patients with resected stage II or III melanoma are at high risk of recurrence, with 5-year mortality rate of 40-60%. Adjuvant interferon-alfa has demonstrated a small RFS and OS benefit versus observation in this patient population. However, the adjuvant treatment landscape is evolving rapidly. Areas covered: This review aims to summarize the safety and efficacy profiles of adjuvant IFNα/PEG-IFNα, revisit the controversy surrounding its application, and reappraise its position in the rapidly changing treatment landscape of resected melanoma...
June 19, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28626402/effect-of-the-combination-of-trabectedin-and-pegylated-liposomal-doxorubicin-in-a-brca2-mutation-carrier-with-recurrent-platinum-sensitive-ovarian-cancer
#13
María Jesús Rubio Pérez
INTRODUCTION: The current standard of care for ovarian cancer is optimal cytoreduction with adjuvant chemotherapy based on a platinum/taxane combination. Although the response rate to this therapy is high, most patients ultimately relapse. Response to second-line therapy and prognosis are linked to the platinum-free interval (PFI); when both improve, the PFI increases. As a result, there is an increasing interest in the PFI extension strategies including platinum-free combinations. CASE PRESENTATION: A 50-year-old postmenopausal woman presented with ovarian serous carcinoma with peritoneal carcinomatosis...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28625748/comparison-of-liposomal-drug-formulations-for-transdermal-iontophoretic-drug-delivery
#14
K Malinovskaja-Gomez, S Espuelas, M J Garrido, J Hirvonen, T Laaksonen
This study was aimed to evaluate the in vitro transdermal direct/pulsed current iontophoretic delivery of an amphiphilic model compound from various lipid vesicle-encapsulated formulations compared to free-drug formulation. Conventional, pegylated, ultradeformable liposomes (transfersomes) and ethosomes loaded with a negatively charged drug diclofenac sodium (DS) were prepared and characterized. All the liposomes possessed an average size of ≈100-150nm and negative zeta potential. No changes in colloidal stability were detected after 8h incubation of any vesicle formulation under constant or pulsed iontophoretic current...
June 15, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28625313/cancer-de-l%C3%A2-ovaire-la-rechute-pr%C3%A3-coce
#15
Patricia Pautier, Elsa Kalbacher, Thibault de la Motte Rouge, Franck Bonnetain, Anne Lesoin
EARLY RELAPSE: Early relapse (primary or secondary) is defined by relapse of disease less than 6 months before the last infusion of chemotherapy (with a platinum compound). There is no carcinological surgical indication. Disease should be treated with a non-platinum single agent (pegylated liposomal doxorubicin, weekly paclitaxel, gemcitabine or topotecan). Bevacizumab can be added if patients have not already received it (level of proof 1, grade A).
May 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/28624706/bilirubin-nanoparticles-ameliorate-allergic-lung-inflammation-in-a-mouse-model-of-asthma
#16
Dong Eon Kim, Yonghyun Lee, MinGyo Kim, Soyoung Lee, Sangyong Jon, Seung-Hyo Lee
Although asthma, a chronic inflammatory airway disease, is relatively well-managed by inhaled corticosteroids, the side effects associated with the long-term use of these agents precipitate the need for alternative therapeutic options based on differing modes of action. Bilirubin, a potent endogenous antioxidant, and anti-inflammatory molecule have been shown to ameliorate asthmatic symptoms; however, its clinical translation has been limited owing to its water insolubility and associated potential toxicity...
June 12, 2017: Biomaterials
https://www.readbyqxmd.com/read/28624669/neutron-activatable-radionuclide-cancer-therapy-using-graphene-oxide-nanoplatelets
#17
Junghyun Kim, Michael Jay
Neutron-activation is a promising method of generating radiotherapeutics with minimal handling of radioactive materials. Graphene oxide nanoplatelets (GONs) were examined as a carrier for neutron-activatable holmium with the purpose of exploiting inherent characteristics for theranostic application. GONs were hypothesized to be an ideal candidate for this application owing to their desirable characteristics such as a rigid structure, high metal loading capacity, low density, heat resistance, and the ability to withstand harsh environments associated with the neutron-activation process...
June 1, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28624460/identification-of-kx2-391-as-an-inhibitor-of-hbv-transcription-by-a-recombinant-hbv-based-screening-assay
#18
Keisuke Harada, Hironori Nishitsuji, Saneyuki Ujino, Kunitada Shimotohno
Antiviral therapies for chronic hepatitis B virus (HBV) infection that are currently applicable for clinical use are limited to nucleos(t)ide analogs targeting HBV polymerase activity and pegylated interferon alpha (PEG-IFN). Towards establishing an effective therapy for HBV related diseases, it is important to develop a new anti-HBV agent that suppresses and eradicates HBV. This study used recombinant HBV encoding NanoLuc to screen anti-HBV compounds from 1827 US Food and Drug Administration approved compounds and identified several compounds that suppressed HBV infection...
June 15, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28624134/efficacy-of-response-guided-directly-observed-pegylated-interferon-and-self-administered-ribavirin-for-people-who-inject-drugs-with-hepatitis-c-virus-genotype-2-3-infection-the-activate-study
#19
Jason Grebely, Olav Dalgard, Evan B Cunningham, Behzad Hajarizadeh, Graham R Foster, Philip Bruggmann, Brian Conway, Markus Backmund, Geert Robaeys, Tracy Swan, Janaki Amin, Philippa S Marks, Sophie Quiene, Tanya L Applegate, Martin Weltman, David Shaw, Adrian Dunlop, Margaret Hellard, Julie Bruneau, Håvard Midgard, Stefan Bourgeois, Cornelia Staehelin, Gregory J Dore
BACKGROUND: There are few data on treatment for hepatitis C virus (HCV) infection among people with ongoing injecting drug use. This study evaluated the efficacy of response-guided therapy for chronic HCV genotypes 2/3 infection among people with ongoing injecting drug use or receiving opioid substitution therapy (OST). A secondary aim was to identify predictors of HCV treatment response. METHODS: ACTIVATE was a multicentre clinical trial recruited between 2012 and 2014...
June 14, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28624102/hepatitis-e-virus-a-potential-threat-for-patients-with-liver-disease-and-liver-transplantation
#20
REVIEW
Annemiek A van der Eijk, Suzan D Pas, Robert A de Man
Immunocompromised patients are at risk of acquiring acute hepatitis E virus infection (HEV), leading to chronicity. Chronic HEV infection is associated with persistent viraemia, raised transaminase activity, histological features associated with chronic hepatitis and evidence of rapid development of cirrhosis. Extrahepatic manifestations have been associated with HEV. Most frequently reported are neurological disorders with predominantly involvement of the peripheral nervous system. In patients using immunosuppressive drugs antibody production is often delayed and HEV RNA detection is superior to serology to detect infection...
April 2017: Best Practice & Research. Clinical Gastroenterology
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