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https://www.readbyqxmd.com/read/28231500/silver-nanoparticle-embedded-graphene-oxide-methotrexate-for-targeted-cancer-treatment
#1
Raj Kumar Thapa, Jae Hee Kim, Jee-Heon Jeong, Beom Soo Shin, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
Combination therapies are widely investigated cancer treatment modalities. Carbon based systems such as graphene oxide (GO), plasmonic nanoparticles such as silver nanoparticles (AgNPs), and the folate analog, methotrexate (MTX), have been separately studied for their potential anticancer effects. In this study, we combined these systems to develop AgNPs-embedded GO with conjugated MTX (MTX-GO/AgNPs) and studied their folate receptor-targeted anticancer effects. Results revealed successful formation of AgNPs on GO along with MTX conjugation as suggested by UV/visible, TEM, AFM, FTIR, and XRD analysis...
February 13, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28231451/disaggregation-of-human-islet-amyloid-polypeptide-fibril-formation-by-ruthenium-polypyridyl-complexes
#2
Dengsen Zhu, Gehui Gong, Wenji Wang, Weihong Du
The toxicity of amyloid proteins is associated with many degenerative and systematic diseases. The aggregation of human islet amyloid polypeptide may induce pancreatic β-cell death, which is linked to type II diabetes. Ruthenium complexes are inhibitors of various proteins and potential anticancer metallodrugs, which can also be used to disaggregate amyloid proteins. This work reported that several ruthenium polypyridyl complexes remarkably affected the peptide aggregation by predominant hydrophobic interaction and metal coordination, as reflected by thermodynamic parameters and mass spectrometry analysis...
February 13, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28231415/encapsulating-an-immunosuppressant-enhances-tolerance-induction-by-siglec-engaging-tolerogenic-liposomes
#3
Lijuan Pang, Matthew S Macauley, Britni M Arlian, Corwin M Nycholat, James C Paulson
Unwanted antibody responses significantly impact human health, and current options for treating deleterious antibody responses largely rely on broad immunosuppressants that can compromise overall immunity. A desirable alternative is to induce antigen-specific immune tolerance. We have shown that co-presentation of antigen and ligands of B cell Siglecs (sialic acid-binding immunoglobulin-like lectin) on a liposomal nanoparticle induces antigen-specific tolerance. Although Siglec-engaging tolerance-inducing antigenic liposomes (STALs) induce robust B cell tolerance in naïve mice, the full potential of STALs requires long-term tolerance induction and suppression of an ongoing immune response...
February 23, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28231406/fungal-adaptation-to-contemporary-fungicide-applications-the-case-of-botrytis-cinerea-populations-from-champagne-vineyards-france
#4
A-S Walker, V Ravigne, A Rieux, S Ali, F Carpentier, E Fournier
In addition to being one of the most acute problems impeding chemical control of fungal diseases, the evolution of fungicide resistance is an emblematic case of local adaptation to spatially heterogeneous and temporally variable selection pressures. Here we dissected the adaptation of Botrytis cinerea (the causal agent of grey mould) populations on grapes to several fungicides. We carried out a two-year survey (four collection dates) on three treated/untreated pairs of plots from vineyards in Champagne (France), and monitored the frequency of four resistant phenotypes that are unambiguously associated to four distinct genotypes...
February 23, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28231380/perioperative-medications-for-preventing-temporarily-increased-intraocular-pressure-after-laser-trabeculoplasty
#5
REVIEW
Linda Zhang, Jennifer S Weizer, David C Musch
BACKGROUND: Glaucoma is the international leading cause of irreversible blindness. Intraocular pressure (IOP) is the only currently known modifiable risk factor; it can be reduced by medications, incisional surgery, or laser trabeculoplasty (LTP). LTP reduces IOP by 25% to 30% from baseline, but early acute IOP elevation after LTP is a common adverse effect. Most of these IOP elevations are transient, but temporarily elevated IOP may cause further optic nerve damage, worsening of glaucoma requiring additional therapy, and permanent vision loss...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28231367/fiddler-s-neck-a-review
#6
Calvin W Myint, Amy L Rutt, Robert T Sataloff
Fiddler's neck is a common dermatologic condition associated with instrument use in violin and viola players. It typically manifests as a submandibular and/or supraclavicular lesion. It is a benign condition, but it may be mistaken for lymphedema or a salivary gland malignancy. Otolaryngologists who treat patients with fiddler's neck should be aware of appropriate management protocols and the need to avoid surgical excision. We obtained informed consent from 3 violinists to present their cases as specific examples of fiddler's neck...
February 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28231325/cardiovascular-exercise-and-burden-of-arrhythmia-in-patients-with-atrial-fibrillation-a-randomized-controlled-trial
#7
Ane Katrine Skielboe, Thomas Quaade Bandholm, Stine Hakmann, Malene Mourier, Thomas Kallemose, Ulrik Dixen
BACKGROUND: Physical activity at moderate-high intensity is recommended to prevent lifestyle diseases. Patients with atrial fibrillation are at risk of a sedentary lifestyle due to fear of exercise-induced episodes of atrial fibrillation. The burden of arrhythmia can be reduced by physical exercise. The effect of exercise intensity on burden of atrial fibrillation needs to be studied further. METHODS AND RESULTS: In a 12-week randomized controlled trial, 76 patients with paroxysmal/persistent atrial fibrillation were allocated to perform exercise at either low intensity or high intensity (50% and 80% of maximal perceived exertion, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/28231167/antibacterial-activity-of-fructus-forsythia-essential-oil-and-the-application-of-eo-loaded-nanoparticles-to-food-borne-pathogens
#8
Na Guo, Qing-Yan Gai, Jiao Jiao, Wei Wang, Yuan-Gang Zu, Yu-Jie Fu
Fructus forsythia essential oil (FEO) with excellent antibacterial activity was rarely reported. The objective of the present study was to investigate the antibacterial activity and the antibacterial mechanism of FEO against two food-borne pathogenic bacteria, Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) in vitro. When treated FEO, the zones of inhibition (ZOI) of E. coli (20.5 ± 0.25 mm) and S. aureus (24.3 ± 0.21 mm) were much larger than control (p < 0.05). The minimum inhibitory concentrations (MICs) of FEO were 3...
October 29, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230992/novel-design-of-heptad-amphiphiles-to-enhance-cell-selectivity-salt-resistance-anti-biofilm-properties-and-their-membrane-disruptive-mechanism
#9
Xiujing Dou, Xin Zhu, Jiajun Wang, Na Dong, Anshan Shan
Coiled-coil, a basic folding pattern of native proteins, was previously demonstrated to be associated with the specific spatial recognition, association, and dissociation of proteins and can be used to perfect engineering peptide model. Thus, in this study, a series of amphiphiles composed of heptads repeats with coiled-coil structures was constructed, and the designed peptides exhibited a broad spectrum of antimicrobial activities. Circular dichroism and biological assays showed that the heptad repeats and length of the linker between the heptads largely influenced the amphiphile's helical propensity and cell selectivity...
February 23, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28230930/in-silico-design-of-optimal-dissolution-kinetics-of-fe-doped-zno-nanoparticles-results-in-cancer-specific-toxicity-in-a-preclinical-rodent-model
#10
Bella B Manshian, Suman Pokhrel, Uwe Himmelreich, Kaido Tämm, Lauri Sikk, Alberto Fernández, Robert Rallo, Tarmo Tamm, Lutz Mädler, Stefaan J Soenen
Cancer cells have unique but widely varying characteristics that have proven them difficult to be treated by classical therapeutics and calls for novel and selective treatment options. Nanomaterials (NMs) have been shown to display biological effects as a function of their chemical composition, and the extent and exact nature of these effects can vary between different biological environments. Here, ZnO NMs are doped with increasing levels of Fe, which allows to finely tune their dissolution rate resulting in significant differences in their biological behavior on cancer or normal cells...
February 23, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28230708/cell-derived-nanoparticles-are-endogenous-modulators-of-sepsis-with-therapeutic-potential
#11
Natalia Kunz, Brent T Xia, Kai-Uwe Kalies, Matthias Klinger, Timo Gemoll, Jens K Habermann, Brynne E Whitacre, Aaron P Seitz, Kathrin Kalies, Charles C Caldwell
Cell-derived nanoparticles (CDNPs) containing cytosolic proteins and RNAs/DNAs can be isolated from stressed eukaryotic cells. Previously, CDNPs isolated from cultured cells exerted immunomodulatory activities in different infections. Here, we sought to elucidate the role of CDNPs using a murine model of cecal ligation and puncture (CLP). We hypothesized that CDNPs influence the immune response at the site of infection, where severe cellular stress occurs. We observed early CDNP accumulation in the peritoneum after 4 h and continued CDNP presence 24 h after CLP...
February 22, 2017: Shock
https://www.readbyqxmd.com/read/28230658/engineering-antibody-like-inhibitors-to-prevent-and-treat-hiv-1-infection
#12
Matthew R Gardner, Michael Farzan
PURPOSE OF REVIEW: Here we discuss recently developed HIV-1 entry inhibitors that can target multiple epitopes on the HIV-1 envelope glycoprotein (Env), with an emphasis on eCD4-Ig. Some of these inhibitors are more potent and broader than any single antibody characterized to date. We also discuss the use of recombinant adeno-associated virus (rAAV) vectors as a platform for long-term expression of these inhibitors. RECENT FINDINGS: Much of the exterior of HIV-1 Env can be targeted by broadly neutralizing antibodies (bNAbs)...
February 21, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28230648/cultured-human-epidermis-combined-with-meshed-skin-autografts-accelerates-epithelialization-and-granulation-tissue-formation-in-a-rat-model
#13
Michiharu Sakamoto, Naoki Morimoto, Masukazu Inoie, Miki Takahagi, Shuichi Ogino, Chizuru Jinno, Shigehiko Suzuki
INTRODUCTION: As the take rate of cultured epidermal autografts in burn wound treatment is variable, widely expanded meshed auto skin grafts are often used in combination with cultured epidermal autograft to increase the take rate and achieve definitive wound coverage. However, a long time (3-4 weeks) required to prepare a cultured epidermis sheet is a disadvantage. Allogeneic cultured epidermis can be prepared in advance and cryopreserved to be used in combination with auto meshed skin grafts for treating third-degree burns...
February 23, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28230645/clinical-scale-rapid-autologous-bk-virus-specific-t-cell-line-generation-from-kidney-transplant-recipients-with-active-viremia-for-adoptive-immunotherapy
#14
Caroline Lamarche, Julie Orio, Victoria Georges-Tobar, Thomas Pincez, Mathieu Goupil, Amina Dahmani, Cedric Carli C, Ann Brasey, Lambert Busque, Jean-Sébastien Delisle
BACKGROUND: Polyomavirus-associated nephropathy (PVAN) following BK virus reactivation in kidney transplant recipients (KTR) can compromise graft survival. Lowering immunosuppression is the only established approach to prevent or treat PVAN but nonspecifically increasing host immune competence also augments rejection risk. Ex vivo T cell stimulation/expansion offers the possibility to generate BK-specific T cell lines for adoptive immunotherapy. The objective of this study was to develop and characterize a clinical scale protocol to generate BK-specific T cell lines from viremic KTR...
February 23, 2017: Transplantation
https://www.readbyqxmd.com/read/28230618/biopharmaceuticals-reference-products-and-biosimilars-to-treat-inflammatory-diseases
#15
Ann Gils, Antonio Bertolotto, Denis Mulleman, Theodora Bejan-Angoulvant, Paul J Declerck
Biopharmaceuticals are primarily therapeutic proteins developed to perform specific functions by acting on the disease pathophysiology. Compared to low molecular chemically synthesized drugs, production of biopharmaceuticals is much more complex and routes of administration and pharmacokinetics differ. Biopharmaceuticals are blockbusters in the treatment of inflammatory diseases such as psoriasis, multiple sclerosis, rheumatic diseases, and inflammatory bowel diseases, and the introduction of these drugs has revolutionized treatment...
February 20, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28230573/global-sagittal-imbalance-due-to-change-in-pelvic-incidence-after-traumatic-spinopelvic-dissociation
#16
Han-Dong Lee, Chang-Hoon Jeon, Nam-Su Chung, Suk-Hyeong Won
OBJECTIVES: Traumatic spinopelvic dissociation separates the spinal column from the pelvis, which usually creates lumbosacral kyphosis. We aimed to examine how the spinopelvic profiles changes after traumatic spinopelvic dissociation, and which are the relevant factors for the sagittal imbalance of the spine. DESIGN: Retrospective analysis. SETTING: Level I trauma center PATIENTS:: Thirty-nine consecutive patients who were diagnosed with traumatic spinopelvic dissociation and had a minimum 2-year radiological follow-up were included...
February 20, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28230559/anti-tnf%C3%AE-treatment-after-surgical-resection-for-crohn-s-disease-is-effective-despite-previous-pharmacodynamic-failure
#17
Amit Assa, Jiri Bronsky, Kaija-Leena Kolho, Kristyna Zarubova, Tim de Meij, Oren Ledder, Margaret Sladek, Stephanie van Biervliet, Caterina Strisciuglio, Raanan Shamir
BACKGROUND: The outcome of patients with Crohn's disease who failed anti-tumor necrosis factor alpha (anti-TNFα) therapy despite adequate serum drug levels (pharmacodynamic failure) is unclear. We aimed to assess such pediatric patients who underwent intestinal resection and were re-treated with the same anti-TNFα agent postoperatively. METHODS: Pediatric patients with Crohn's disease who underwent intestinal resection and were treated with anti-TNFα agents postoperatively were assessed retrospectively...
February 22, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28230558/risk-for-overall-infection-with-anti-tnf-and-anti-integrin-agents-used-in-ibd-a-systematic-review-and-meta-analysis
#18
Eric D Shah, Jeremy P Farida, Corey A Siegel, Kelly Chong, Gil Y Melmed
BACKGROUND: The overall risk for infection with contemporary biological agents in treating Crohn's disease (CD) and ulcerative colitis (UC) has not been systematically assessed. METHODS: We performed a PubMed and Cochrane database literature search to evaluate randomized, placebo-controlled trials of biologics in treating UC and CD. Meta-analysis was performed using a DerSimonian and Laird random effects model. We determined relative risk (RR) of harm against placebo; number needed to harm (NNH) was reported when appropriate...
February 22, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28230440/late-gastrointestinal-effects-of-pelvic-radiation-a-nurse-led-service
#19
Helen Ludlow, John Green, Jeff Turner
There are currently at least 2 million people in the UK living with and following a cancer diagnosis. Typically four out of every ten people with cancer will receive radiotherapy, but a large proportion of people who have pelvic radiotherapy may go on to develop gastrointestinal (GI) symptoms. This includes rectal bleeding and faecal incontinence, which can have a huge impact on quality of life. These problems often go under-reported by patients and are also under-recognised or under-treated by health professionals...
February 23, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28230390/effectiveness-of-an-internet-intervention-deprexis-for-depression-in-a-united-states-adult-sample-a-parallel-group-pragmatic-randomized-controlled-trial
#20
Christopher G Beevers, Rahel Pearson, James S Hoffman, A Alban Foulser, Jason Shumake, Björn Meyer
OBJECTIVE: To examine the effectiveness of an Internet intervention for depression with a randomized, controlled trial in a large sample of adults recruited from the United States. METHOD: The current study examines the effectiveness of Deprexis, an Internet treatment for depression that was provided with relatively minimal support. There were 376 treatment-seeking adults (mean age = 32 years; 74% female; 77% Caucasian, 7% Asian, 7% multiple races, 4% African American, and 11% Hispanic/Latino) with elevated depression (Quick Inventory of Depressive Symptoms-Self-Report [QIDS-SR] > = 10) who were randomized to receive an 8-week course of treatment immediately (n = 285) or after an 8-week delay (n = 91; i...
February 23, 2017: Journal of Consulting and Clinical Psychology
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