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https://www.readbyqxmd.com/read/29778035/formation-of-contact-active-antimicrobial-surfaces-by-covalent-grafting-of-quaternary-ammonium-compounds
#1
REVIEW
Poverenov Elena, Klein Miri
Different synthetic strategies for the formation of contact active antimicrobial materials utilizing covalent linkage of quaternary ammonium compounds (QACs) were reviewed. There is a demand to find methods that will prevent bacterial fouling without the release of antimicrobial agents, because biocides cause environment pollution and promote the development of bacteria resistance mechanisms. The contact active antimicrobial surfaces may provide a useful tool for this purpose. The covalent surface grafting of QACs seems to be a feasible and promising approach for the formation of safe and effective antimicrobial materials that could be utilized for medical devices, food industry, water treatment systems and other applications...
May 16, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29777717/analysis-of-the-postoperative-periarticular-environment-and-influence-on-sustained-drug-delivery-from-a-gel-formulation
#2
Darren Svirskis, Waldron Martis, Prabhat Bhusal, Manisha Sharma, Renus Stowers, Simon W Young
Regional intraarticular delivery of local anaesthetics is effective in treating postoperative pain following total knee or hip replacement. Recent research efforts have been only partially successful in achieving sustained release of the analgesic agent, in part due to limited understanding of the biological environment into which these formulations are administered. This study aimed to detail the composition and properties of postoperative periarticular fluid (PO-PAF). PO-PAF was collected from 8 patients and the composition and physicochemical properties determined...
May 16, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29777163/evolution-of-cll-treatment-from-chemoimmunotherapy-to-targeted-and-individualized-therapy
#3
REVIEW
Jan A Burger, Susan O'Brien
During the past 5 years, a number of highly active novel agents, including kinase inhibitors targeting BTK or PI3Kδ, an antagonist of the antiapoptotic protein BCL-2, and new anti-CD20 monoclonal antibodies, have been added to the therapeutic armamentarium for patients with chronic lymphocytic leukaemia (CLL). In these exciting times, care is needed to optimally integrate these novel agents into the traditional treatment algorithm without overlooking or compromising the benefits of established treatments, especially chemoimmunotherapy...
May 18, 2018: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/29777119/changes-in-t-cell-effector-functions-over-an-8-year-period-with-tnf-antagonists-in-patients-with-chronic-inflammatory-rheumatic-diseases
#4
Ilaria Sauzullo, Rossana Scrivo, Paola Sessa, Fabio Mengoni, Vincenzo Vullo, Guido Valesini, Claudio Maria Mastroianni
The aim of the study was to clarify the effect of long-term anti-TNF therapy on T cell function in patients with rheumatologic immune-mediated inflammatory diseases (IMID). The production of IFNγ by T cells was evaluated at baseline and after 1, 2, 4, and 8 years of anti-TNF agents by means of a QuantiFERON-TB Gold In-Tube assay. The T cell proliferation and surface co-expression of CD25/CD134 in response to phytohaemagglutinin together with the in vitro impact of anti-TNF therapy on the functional capacity of T cells were evaluated after 8 years from the onset of the biological treatment...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776887/satisfaction-fulfillment-of-expectations-and-adherence-to-subcutaneous-biological-drugs-in-patients-with-rheumatoid-arthritis-arco-study
#5
Jaime Calvo-Alén, Paloma Vela, Sagrario Bustabad, Francisco Maceiras, Loreto Carmona, Luis Cea-Calvo
OBJECTIVES: In the ARCO study, adherence to subcutaneous biological agents by patients with rheumatoid arthritis improved with monthly administration. We assess whether adherence can be related to fulfillment of expectations and satisfaction with treatment. PATIENTS AND METHODS: Adherence was assessed by calculating the Medication Possession Ratio, and satisfaction and fulfillment of expectations using the «EXPRESAR» group questionnaire. RESULTS: In 346 patients, those who were satisfied/very satisfied with efficacy and tolerability were ≥80% and 64...
May 15, 2018: Reumatología Clinica
https://www.readbyqxmd.com/read/29776602/blurring-boundaries-receptor-tyrosine-kinases-as-functional-g-protein-coupled-receptors
#6
Caitrin Crudden, Takashi Shibano, Dawei Song, Naida Suleymanova, Ada Girnita, Leonard Girnita
Receptor tyrosine kinases (RTKs) such as the insulin-like growth factor type 1 receptor (IGF-1R) control important biological activities as well as being involved in pathological processes. Due to their supportive nature in many human cancers they have long been considered attractive therapeutic targets. However, lessons learnt from early targeting trials highlight that a simple "active versus inactive" state model with classical kinase-only signaling is overly simplistic and does not describe reality...
2018: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/29776592/response-to-metals-treatment-of-fra1-a-member-of-the-ap-1-transcription-factor-family-in-p-lividus-sea-urchin-embryos
#7
Roberta Russo, Rosa Bonaventura, Marco Chiaramonte, Caterina Costa, Valeria Matranga, Francesca Zito
Lithium (Li), Nickel (Ni), and Zinc (Zn) are metals normally present in the seawater, although they can have adverse effects on the marine ecosystem at high concentrations by interfering with many biological processes. These metals are toxic for sea urchin embryos, affecting their morphology and developmental pathways. In particular, they perturb differently the correct organization of the embryonic axes (animal-vegetal, dorso-ventral): Li is a vegetalizing agent and Ni disrupts the dorso-ventral axis, while Zn has an animalizing effect...
May 5, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29776407/comparative-genomics-of-the-miniature-wasp-and-pest-control-agent-trichogramma-pretiosum
#8
Amelia R I Lindsey, Yogeshwar D Kelkar, Xin Wu, Dan Sun, Ellen O Martinson, Zhichao Yan, Paul F Rugman-Jones, Daniel S T Hughes, Shwetha C Murali, Jiaxin Qu, Shannon Dugan, Sandra L Lee, Hsu Chao, Huyen Dinh, Yi Han, Harsha Vardhan Doddapaneni, Kim C Worley, Donna M Muzny, Gongyin Ye, Richard A Gibbs, Stephen Richards, Soojin V Yi, Richard Stouthamer, John H Werren
BACKGROUND: Trichogrammatids are minute parasitoid wasps that develop within other insect eggs. They are less than half a millimeter long, smaller than some protozoans. The Trichogrammatidae are one of the earliest branching families of Chalcidoidea: a diverse superfamily of approximately half a million species of parasitoid wasps, proposed to have evolved from a miniaturized ancestor. Trichogramma are frequently used in agriculture, released as biological control agents against major moth and butterfly pests...
May 18, 2018: BMC Biology
https://www.readbyqxmd.com/read/29776016/psoriasis-area-and-severity-index-pasi-response-in-moderate-severe-psoriatic-patients-switched-to-adalimumab-results-from-the-oppsa-study
#9
M Talamonti, M Galluzzo, N Bernardini, G Caldarola, S Persechino, F Cantoresi, C G Egan, C Potenza, K Peris, L Bianchi
BACKGROUND: Few studies have compared the efficacy of switching to adalimumab in the real-life setting in plaque psoriasis patients. OBJECTIVE: To evaluate the effect of adalimumab in psoriasis patients previously treated with other biologics. METHODS: In this multicentre study, psoriasis patients (N=262) treated with an anti-TNF alpha agent, ustekinumab or naïve to biologics then switched to adalimumab were included. Disease severity was assessed by the Psoriasis Area and Severity Index (PASI) at baseline and after 3, 6, 12, 24 and 36 months...
May 18, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29775948/novel-3-phenylcoumarin-lipoic-acid-conjugates-as-multi-functional-agents-for-potential-treatment-of-alzheimer-s-disease
#10
Leili Jalili-Baleh, Hamid Nadri, Hamid Forootanfar, Alireza Samzadeh-Kermani, Tuba Tüylü Küçükkılınç, Beyza Ayazgok, Mahban Rahimifard, Maryam Baeeri, Mohsen Doostmohammadi, Loghman Firoozpour, Syed Nasir Abbas Bukhari, Mohammad Abdollahi, Mohammad Reza Ganjali, Saeed Emami, Mehdi Khoobi, Alireza Foroumadi
New series of triazole-containing 3-phenylcoumarin-lipoic acid conjugates were designed as multi-functional agents for treatment of Alzheimer's disease. The target compounds 4a-o were synthesized via the azide-alkyne cycloaddition reaction and their biological activities were primarily evaluated in terms of neuroprotection against H2 O2 -induced cell death in PC12 cells and AChE/BuChE inhibition. The promising compounds 4j and 4i containing four carbons spacer were selected for further biological evaluations...
May 2, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29775845/toward-innovative-combinational-immunotherapy-a-systems-biology-perspective
#11
REVIEW
Xue-Tao Li, Jin-Ji Yang, Yi-Long Wu, Jun Hou
The treatment of non-small-cell lung cancer (NSCLC) has advanced significantly in the last decades. Especially immune checkpoint inhibitors have shown inconceivable effect on enhancing host anti-tumor activity in NSCLC. However, the limitation of checkpoint blockade monotherapy seems unavoidable in most of the NSCLC patients and only ∼20% of them achieved response to monotherapy with immune checkpoint inhibitors. Thus combining immune checkpoint inhibitors with other agents with different action mechanisms holds a promise to revitalize NSCLC treatment, such as the combination of checkpoint inhibitors with angiogenesis inhibitors, or with chemotherapy, as well as the combination of two checkpoint inhibitors...
May 8, 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29774535/physiology-and-molecular-biology-of-barrier-mechanisms-in-the-fetal-and-neonatal-brain
#12
Norman R Saunders, Katarzyna M Dziegielewska, Kjeld Møllgård, Mark D Habgood
Properties of the local internal environment of the adult brain are tightly controlled providing a stable milieu essential for its normal function. The mechanisms involved in this complex control are structural, molecular and physiological (influx and efflux transporters) frequently referred to as the "blood-brain barrier". These mechanisms include regulation of ion levels in brain interstitial fluid essential for normal neuronal function, supply of nutrients, removal of metabolic products and prevention of entry or elimination of toxic agents...
May 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29774506/therapeutic-potential-of-mesenchymal-stem-cell-derived-exosomes-in-the-treatment-of-eye-diseases
#13
C Randall Harrell, Bojana Simovic Markovic, Crissy Fellabaum, Aleksandar Arsenijevic, Valentin Djonov, Nebojsa Arsenijevic, Vladislav Volarevic
Mesenchymal stem cells (MSCs) were, due to their immunomodulatory and pro-angiogenic characteristics, extensively explored as new therapeutic agents in cell-based therapy of uveitis, glaucoma, retinal and ocular surface diseases.Since it was recently revealed that exosomes play an important role in biological functions of MSCs, herewith we summarized current knowledge about the morphology, structure, phenotype and functional characteristics of MSC-derived exosomes emphasizing their therapeutic potential in the treatment of eye diseases...
May 18, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29774103/bevacizumab-exacerbates-sinusoidal-obstruction-syndrome-sos-in-the-animal-model-and-increases-mmp-9-production
#14
Azin Jafari, Hanno Matthaei, Sven Wehner, Tolga Tonguc, Jörg C Kalff, Steffen Manekeller
Background: Thanks to modern multimodal treatment the ouctome of patients with colorectal cancer has experienced significant improvements. As a downside, agent specific side effects have been observed such as sinusoidal obstruction syndrome (SOS) after oxaliplatin chemotherapy (OX). Bevazicumab targeting VEGF is nowadays comprehensively used in combination protocols with OX but its impact on hepatotoxicity is thus far elusive and focus of the present study. Results: After MCT administration 67% of animals developed SOS...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773991/first-biologic-drug-in-the-treatment-of-ras-wild-type-metastatic-colorectal-cancer-anti-egfr-or-bevacizumab-results-from-a-meta-analysis
#15
REVIEW
Alessandro Ottaiano, Alfonso De Stefano, Monica Capozzi, Anna Nappi, Chiara De Divitiis, Carmela Romano, Lucrezia Silvestro, Antonino Cassata, Rossana Casaretti, Salvatore Tafuto, Michele Caraglia, Massimiliano Berretta, Guglielmo Nasti, Antonio Avallone
Introduction: We performed a meta-analysis in order to analyze and quantify the effect on survival of starting therapy in RAS wild-type (wt) metastatic colorectal cancer (mCRC) patients with anti-EGFR agents or bevacizumab. Patients and Methods: Randomized, phase II or III, clinical trials reporting overall survival (OS) in RAS wt mCRC patients treated with first-line chemotherapy (CT) associated with bevacizumab or anti-EGFR agents were selected. The primary end-point of this meta-analysis was OS; findings were depicted in classical Forest plots...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29773767/the-role-of-brincidofovir-in-preparation-for-a-potential-smallpox-outbreak
#16
Scott A Foster, Scott Parker, Randall Lanier
Smallpox (variola) virus is considered a Category A bioterrorism agent due to its ability to spread rapidly and the high morbidity and mortality rates associated with infection. Current recommendations recognize the importance of oral antivirals and call for having at least two smallpox antivirals with different mechanisms of action available in the event of a smallpox outbreak. Multiple antivirals are recommended due in large part to the propensity of viruses to become resistant to antiviral therapy, especially monotherapy...
October 30, 2017: Viruses
https://www.readbyqxmd.com/read/29773347/lipophilic-methylene-blue-analogues-enhance-mitochondrial-function-and-increase-frataxin-levels-in-a-cellular-model-of-friedreich-s-ataxia
#17
Omar M Khdour, Indrajit Bandyopadhyay, Sandipan Roy Chowdhury, Nishant P Visavadiya, Sidney M Hecht
Friedreich's ataxia (FRDA) is an autosomal recessive neurodegenerative disorder resulting from reduced expression of the protein frataxin (FXN). Although its function is not fully understood, frataxin appears to help assemble iron sulfur clusters; these are critical for the function of many proteins, including those needed for mitochondrial energy production. Finding ways to increase FXN levels has been a major therapeutic strategy for this disease. Previously, we described a novel series of methylene violet analogues and their structural optimization as potential therapeutic agents for neurodegenerative and mitochondrial disorders...
May 4, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29772685/the-emergence-of-endophytic-microbes-and-their-biological-promise
#18
Gary Strobel
As is true with animal species, plants also have an associated microflora including endophytes as well as microbes associated with the phyllosphere and rhizosphere (plant surfaces) and this is considered the plant microbiome. However, those organisms within virtually all tissues and organs of the plant are known as endophytes. Most often fungi are the most frequently recovered endophytes from plant tissues, but bacterial forms generally occur in greater numbers, but not in species varieties. The exact biological/biochemical role of the endophyte in the plant and how it interacts with the plant and other endophytes and plant associated organisms has not been intensely and carefully examined...
May 16, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29772469/synthesis-of-steroidal-imidazolidinthiones-as-potential-apoptotic-agents-investigation-by-theoretical-and-experimental-studies
#19
Ayaz Mahmood Dar, Rizwan Nabi, Shafia Mir, Manzoor Ahmad Gatoo, Shamsuzzaman, Shabir H Lone
New steroidal imidazolidinthione derivatives (4-6) were synthesized from steroidal thiosemicarbazones and dichloroethane. The synthesized compounds were characterized using spectral data analysis. Theoretical DFT involving B3LYP/6-31G∗∗ level of theory was employed to gain insights into the molecular structure of the target compounds. MEPS and FMO analysis were carried out. HOMO-LUMO energy gap was determined which helped to evaluate various global descriptors like hardness, chemical potential, electronegativity, nucleophilicity and electrophilicity index, etc...
May 2, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29772242/synthesis-molecular-modeling-and-biological-evaluation-of-potent-analogs-of-2-methoxyestradiol
#20
Nora Al-Kazaale, Phuong T Tran, Farhad Haidari, Eirik Johansson Solum, Sandra Liekens, Peter Vervaeke, Ingebrigt Sylte, Jing-Jy Cheng, Anders Vik, Trond Vidar Hansen
The endogenous steroid 2-methoxyestradiol (1) has attracted a great interest as a lead compound towards the development of new anti-cancer drugs. Herein, the synthesis, molecular modeling, anti-proliferative and anti-angiogenic effects of ten 2-ethyl and four 2-methoxy analogs of estradiol are reported. The ethyl group was introduced to the steroid A-ring using a novel Friedel-Crafts alkylation protocol. Several analogs displayed potent anti-proliferative activity with IC50 -values in the submicromolar range towards the CEM human leukemia cancer cell line...
May 14, 2018: Steroids
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