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https://www.readbyqxmd.com/read/29161778/highly-efficient-destruction-of-squamous-carcinoma-cells-of-the-head-and-neck-by-photochemical-internalization-of-ranpirnase
#1
Nora Liebers, Tim Holland-Letz, Mona Welschof, Anders Høgset, Dirk Jäger, Michaela A E Arndt, Jürgen Krauss
Introduction: Photochemical Internalization is a novel drug delivery technology for cancer treatment based on the principle of Photodynamic Treatment. Using a photosensitizer that locates in endocytic vesicles membranes of tumor cells, Photochemical internalization enables cytosolic release of endocytosed antitumor agents in a site-specific manner. The purpose of the present in-vitro study was to explore whether Photochemical Internalization is able to enhance the efficacy of Ranpirnase, a cytotoxic amphibian ribonuclease, for eradication of squamous cell carcinoma of the head and neck...
November 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29161764/mechanism-of-doxorubicin-cardiotoxicity-evaluated-by-integrating-multiple-molecular-effects-into-a-biophysical-model
#2
M Fernandez-Chas, M J Curtis, S A Niederer
BACKGROUND AND PURPOSE: Doxorubicin (DOX) is an effective cancer therapeutic agent but causes therapy-limiting cardiotoxicity. The effects of DOX and its metabolite doxorubicinol (DOXL) on individual channels have been well characterised in isolation. However, it is unknown how the action and interaction of affected channels combine to generate the phenotypic cardiotoxic outcome. We sought to develop an in silico model that links drug effects on channels to action potential duration (APD) and intracellular Ca(2+) concentration in order to address this gap in knowledge...
November 21, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29161753/improving-the-efficacy-of-proteasome-inhibitors-in-the-treatment-of-renal-cell-carcinoma-by-combination-with-the-hiv-protease-inhibitors-lopinavir-or-nelfinavir
#3
Dominik Abt, Andrej Besse, Lenka Sedlarikova, Marianne Kraus, Juergen Bader, Tobias Silzle, Martina Vodinska, Ondrej Slaby, Hans-Peter Schmid, Daniel Stephan Engeler, Christoph Driessen, Lenka Besse
OBJECTIVES: To assess the potential of second-generation proteasome inhibition by carfilzomib and its combination with the HIV-protease inhibitors (HIV-PIs) lopinavir and nelfinavir in vitro for improved treatment of clear cell renal cell cancer (ccRCC). MATERIALS AND METHODS: Cytotoxicity, reactive oxygen species (ROS) production and unfolded protein response (UPR) activation of proteasome inhibitors, HIV-PIs and their combination was assessed in 3 cell lines and primary cells derived from 3 ccRCC tumors by MTS assay, flow cytometry, quantitative PCR and western blot, respectively...
November 21, 2017: BJU International
https://www.readbyqxmd.com/read/29161702/favorable-effects-of-endoscopic-ligation-combined-with-drugs-on-rebleeding-and-mortality-in-cirrhotic-patients-a-network-meta-analysis
#4
Liang Shi, Xueping Zhang, Jianye Li, Xibo Bai
BACKGROUND: To assess the effects of combination therapies (endoscopic plus drug[s], drug combinations) on variceal/any-cause rebleeding and mortality among cirrhotic patients with one previous episode of variceal hemorrhage. SUMMARY: We searched PubMed, Embase, Cochrane Library, and Web of Science for eligible studies. We included 26 randomized controlled trials involving 2,536 adults using OR to measure the effects. Endoscopic variceal ligation (EVL) plus nadolol ranked first for reducing recurrent bleeds...
November 21, 2017: Digestive Diseases
https://www.readbyqxmd.com/read/29161627/nanoscaled-red-blood-cells-facilitate-breast-cancer-treatment-by-combining-photothermal-photodynamic-therapy-and-chemotherapy
#5
Guoyun Wan, Bowei Chen, Ling Li, Dan Wang, Shurui Shi, Tao Zhang, Yue Wang, Lianyun Zhang, Yinsong Wang
Red blood cells (RBCs)-based vesicles have been widely used for drug delivery due to their unique advantages. Intact RBCs contain a large amount of oxyhemoglobin (oxyHb), which can assist with photodynamic therapy (PDT). Indocyanine green (ICG), a photosensitizer both for photothermal therapy (PTT) and PDT, shows potent anticancer efficacy when combined with chemotherapeutic drug doxorubicin (DOX). In this study, we prepared nanoscaled RBCs (RAs) containing oxyHb and gas-generating agent ammonium bicarbonate (ABC) for co-loading and controlled release of ICG and DOX, thus hoping to achieve synergistic effects of PTT/PDT and chemotherapy against breast cancer...
November 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/29161458/proton-pump-inhibitors-for-functional-dyspepsia
#6
REVIEW
Maria Ines Pinto-Sanchez, Yuhong Yuan, Ahmed Hassan, Premysl Bercik, Paul Moayyedi
BACKGROUND: Functional dyspepsia (FD or non-ulcer dyspepsia) is defined as continuous or frequently recurring epigastric pain or discomfort for which no organic cause can be found. Acid suppressive therapy, including proton pump inhibitors (PPIs), has been proposed as a therapeutic option in FD, but its efficacy remains controversial. While PPIs are generally considered safe and well tolerated, they have been associated with adverse events, especially in the long term. For this reason, decisions on whether to initiate or continue PPI therapy should be made based on an appropriate clinical indication...
November 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29161257/regulation-of-camp-and-gsk3-signaling-pathways-contributes-to-the-neuronal-conversion-of-glioma
#7
Jinsoo Oh, Yongbo Kim, Lihua Che, Jeong Beom Kim, Gyeong Eon Chang, Eunji Cheong, Seok-Gu Kang, Yoon Ha
Glioma is the most malignant type of primary central nervous system tumors, and has an extremely poor prognosis. One potential therapeutic approach is to induce the terminal differentiation of glioma through the forced expression of pro-neural factors. Our goal is to show the proof of concept of the neuronal conversion of C6 glioma through the combined action of small molecules. We investigated the various changes in gene expression, cell-specific marker expression, signaling pathways, physiological characteristics, and morphology in glioma after combination treatment with two small molecules (CHIR99021, a glycogen synthase kinase 3 [GSK3] inhibitor and forskolin, a cyclic adenosine monophosphate [cAMP] activator)...
2017: PloS One
https://www.readbyqxmd.com/read/29161243/the-combined-activation-of-kca3-1-and-inhibition-of-kv11-1-herg1-currents-contribute-to-overcome-cisplatin-resistance-in-colorectal-cancer-cells
#8
Serena Pillozzi, Massimo D'Amico, Gianluca Bartoli, Luca Gasparoli, Giulia Petroni, Olivia Crociani, Tiziano Marzo, Angela Guerriero, Luigi Messori, Mirko Severi, Roberto Udisti, Heike Wulff, K George Chandy, Andrea Becchetti, Annarosa Arcangeli
BACKGROUND: Platinum-based drugs such as Cisplatin are commonly employed for cancer treatment. Despite an initial therapeutic response, Cisplatin treatment often results in the development of chemoresistance. To identify novel approaches to overcome Cisplatin resistance, we tested Cisplatin in combination with K(+) channel modulators on colorectal cancer (CRC) cells. METHODS: The functional expression of Ca(2+)-activated (KCa3.1, also known as KCNN4) and voltage-dependent (Kv11...
November 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29160846/a-triphenylphosphonium-functionalized-mitochondriotropic-nanocarrier-for-efficient-co-delivery-of-doxorubicin-and-chloroquine-and-enhanced-antineoplastic-activity
#9
Katerina N Panagiotaki, Zili Sideratou, Spiros A Vlahopoulos, Maria Paravatou-Petsotas, Michael Zachariadis, Nikolas Khoury, Vassilis Zoumpourlis, Dimitris Tsiourvas
Drug delivery systems that target subcellular organelles and, in particular, mitochondria are considered to have great potential in treating disorders that are associated with mitochondrial dysfunction, including cancer or neurodegenerative diseases. To this end, a novel hyperbranched mitochondriotropic nanocarrier was developed for the efficient co-delivery of two different (both in chemical and pharmacological terms) bioactive compounds. The carrier is based on hyperbranched poly(ethyleneimine) functionalized with triphenylphosphonium groups that forms ~100 nm diameter nanoparticles in aqueous media and can encapsulate doxorubicin (DOX), a well-known anti-cancer drug, and chloroquine (CQ), a known chemosensitizer with arising potential in anticancer medication...
November 21, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29160731/combination-antiretroviral-therapy-accelerates-immune-recovery-in-patients-with-hiv-related-lymphoma-treated-with-epoch-a-comparison-within-one-prospective-trial-amc034
#10
Carlyn Rose C Tan, Stefan K Barta, Jeannette Lee, Michelle A Rudek, Joseph A Sparano, Ariela Noy
Drug-drug interactions between cART and chemotherapy may impact HIV and lymphoma control or lead to increased toxicities. No prospective comparative data informs potential harms and benefits. In AMC034, HIV-associated high-grade B-cell NHL patients received DA-EPOCH with rituximab. cART was given with EPOCH or delayed until chemotherapy completion per investigator choice. Pharmacokinetic, immunological, and treatment effects of concurrent cART were evaluated. CD4 counts dropped during EPOCH in both groups but recovered to higher than baseline 6 months post-EPOCH only in the cART group...
November 21, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29160606/the-relationship-between-hazardous-alcohol-use-and-violence-among-street-involved-youth
#11
Nadia Fairbairn, Evan Wood, Sabina Dobrer, Huiru Dong, Thomas Kerr, Kora Debeck
BACKGROUND AND OBJECTIVES: Alcohol is a major contributor to premature disability and death among youth, often due to physical trauma, violence, and suicide. The purpose of this study was to longitudinally examine the association between hazardous alcohol use and experiences of violence among a cohort of street-involved youth. METHODS: Data were derived from the At-Risk Youth Study (ARYS), a prospective cohort of street-involved youth who use illicit substances in Vancouver, Canada...
November 21, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/29160385/usual-interstitial-pneumonia-typical-possible-and-inconsistent-patterns
#12
Pedro Paulo Teixeira E Silva Torres, Marcelo Fouad Rabahi, Maria Auxiliadora Carmo Moreira, Gustavo de Souza Portes Meirelles, Edson Marchiori
Idiopathic pulmonary fibrosis is a severe and progressive chronic fibrosing interstitial lung disease, a definitive diagnosis being established by specific combinations of clinical, radiological, and pathological findings. According to current international guidelines, HRCT plays a key role in establishing a diagnosis of usual interstitial pneumonia (UIP). Current guidelines describe three UIP patterns based on HRCT findings: a typical UIP pattern; a pattern designated "possible UIP"; and a pattern designated "inconsistent with UIP", each pattern having important diagnostic implications...
September 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29160121/near-infrared-light-responsive-nanoparticles-for-improved-anticancer-efficacy-through-synergistic-chemo-photothermal-therapy
#13
Yanli Li, Bing Xin Xiao, Jie Dong, Yun Liu, Shan Gao, Jie Pang, Zengxian Sun
Combined treatment is more effective than single treatment against most forms of cancer. The synergistic chemo-thermotherapy mediated by nanoparticles has superior advantages of lesser adverse effects as a promising cancer therapy modality. In this study, we report a theranostic carrier system co-encapsulating Doxorubicin (DOX) and Indocyanine green (ICG) into the D-α-Tocopheryl polyethylene glycol 1000 succinate (TPGS). Full physicochemical characterization studies of the DOX/ICG-loaded TPGS nanoparticles (TNPs) are performed...
November 21, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29159668/new-pulmonary-hypertension-model-in-conscious-dogs-to-investigate-pulmonary-selectivity-of-acute-pharmacological-interventions
#14
Thomas Mondritzki, Philip Boehme, Lena Schramm, Julia Vogel, Ilka Mathar, Peter Ellinghaus, Peter Kolkhof, Erwin Bischoff, Jörg Hüser, Wilfried Dinh, Peter Sandner, Hubert Truebel
PURPOSE: Testing of investigational drugs in animal models is a critical step in drug development. Current models of pulmonary hypertension (PH) have limitations. The most relevant outcome parameters such as pulmonary artery pressure (PAP) are measured invasively which requires anesthesia of the animal. We developed a new canine PH model in which pulmonary vasodilators can be characterized in conscious dogs and lung selectivity can be assessed non-invasively. METHODS: Telemetry devices were implanted to measure relevant hemodynamic parameters in conscious dogs...
November 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29159594/structural-interventions-in-hiv-prevention-a-taxonomy-and-descriptive-systematic-review
#15
REVIEW
Theresa Ann Sipe, Terrika L Barham, Wayne D Johnson, Heather A Joseph, Maria Luisa Tungol-Ashmon, Ann O'Leary
One of the four national HIV prevention goals is to incorporate combinations of effective, evidence-based approaches to prevent HIV infection. In fields of public health, techniques that alter environment and affect choice options are effective. Structural approaches may be effective in preventing HIV infection. Existing frameworks for structural interventions were lacking in breadth and/or depth. We conducted a systematic review and searched CDC's HIV/AIDS Prevention Research Synthesis Project's database for relevant interventions during 1988-2013...
November 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29159410/use-of-health-care-databases-to-support-supplemental-indications-of-approved-medications
#16
Michael Fralick, Aaron S Kesselheim, Jerry Avorn, Sebastian Schneeweiss
Importance: Manufacturers of US Food and Drug Administration-approved prescription drugs often apply for additional indications based on randomized clinical trials. Real-world database analyses on a medication's use and outcomes in routine settings of care might help to inform decision making regarding such supplemental indications. Objective: To examine whether longitudinal data from a health care database can support the results of a randomized clinical trial that led to a supplemental indication for telmisartan...
November 20, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/29159177/effectiveness-of-chinese-herbal-medicine-combined-with-antibiotics-for-extensively-drug-resistant-enterobacteria-and-nonfermentative-bacteria-infection-real-life-experience-in-a-retrospective-cohort
#17
Yangping Cai, Qing Zhang, Yuefeng Fu, Li Li, Ning Zhao, Aiping Lu, Qingquan Liu, Miao Jiang
Chinese herbal medicines (CHMs) have been successfully used in the treatment of infectious diseases, yet the effectiveness of CHMs for extensively drug-resistant enterobacteria (XDRE) infection remains unclear. Herein we developed a retrospective multicenter study including 766 patients with XDRE and nonfermentative bacteria (NFB) infection to investigate the effectiveness of CHMs combined with antibiotics in the treatment of XDRE infections in clinical daily practice in a cohort of patients and compared the regular antibiotics monotherapy...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29158848/biodegradable-core-shell-dual-metal-organic-frameworks-nanotheranostic-agent-for-multiple-imaging-guided-combination-cancer-therapy
#18
Dongdong Wang, Jiajia Zhou, Ruohong Shi, Huihui Wu, Ruhui Chen, Beichen Duan, Guoliang Xia, Pengping Xu, Hui Wang, Shu Zhou, Chengming Wang, Haibao Wang, Zhen Guo, Qianwang Chen
Metal-organic-frameworks (MOFs) possess high porosity, large surface area, and tunable functionality are promising candidates for synchronous diagnosis and therapy in cancer treatment. Although large number of MOFs has been discovered, conventional MOF-based nanoplatforms are mainly limited to the sole MOF source with sole functionality. In this study, surfactant modified Prussian blue (PB) core coated by compact ZIF-8 shell (core-shell dual-MOFs, CSD-MOFs) has been reported through a versatile stepwise approach...
2017: Theranostics
https://www.readbyqxmd.com/read/29158837/temperature-sensitive-gold-nanoparticle-coated-pluronic-pll-nanoparticles-for-drug-delivery-and-chemo-photothermal-therapy
#19
Ying Sun, Qi Wang, Jianhua Chen, Lei Liu, Li Ding, Ming Shen, Jin Li, Baoshan Han, Yourong Duan
Gold nanoparticle-coated Pluronic-b-poly(L-lysine) nanoparticles (Pluronic-PLL@Au NPs) were synthesized via an easy one-step method and employed as carriers for the delivery of paclitaxel (PTX) in chemo-photothermal therapy, in which Pluronic-PLL acts as the reductant for the formation of AuNPs without the need for an additional reducing agent. METHODS: The deposition of AuNPs on the surface of Pluronic-PLL micelles and the thermal response of the system were followed via ultraviolet-visible spectroscopy and dynamic light scattering...
2017: Theranostics
https://www.readbyqxmd.com/read/29158822/liposomal-64-cu-pet-imaging-of-anti-vegf-drug-effects-on-liposomal-delivery-to-colon-cancer-xenografts
#20
Stephanie J Blocker, Kirk A Douglas, Lisa Anne Polin, Helen Lee, Bart S Hendriks, Enxhi Lalo, Wei Chen, Anthony F Shields
Liposomes (LP) deliver drug to tumors due to enhanced permeability and retention (EPR). LP were labeled with (64)Cu for positron emission tomography (PET) to image tumor localization. Bevacizumab (bev), a VEGF targeted antibody, may modify LP delivery by altering tumor EPR and this change can also be imaged. Objective: Assess the utility of (64)Cu-labeled LP for PET in measuring altered LP delivery early after treatment with bev. Methods: HT-29 human colorectal adenocarcinoma tumors were grown subcutaneously in SCID mice...
2017: Theranostics
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