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https://www.readbyqxmd.com/read/27915376/eco-friendly-approach-for-nanoparticles-synthesis-and-mechanism-behind-antibacterial-activity-of-silver-and-anticancer-activity-of-gold-nanoparticles
#1
REVIEW
Maheshkumar Prakash Patil, Gun-Do Kim
This review covers general information about the eco-friendly process for the synthesis of silver nanoparticles (AgNP) and gold nanoparticles (AuNP) and focuses on mechanism of the antibacterial activity of AgNPs and the anticancer activity of AuNPs. Biomolecules in the plant extract are involved in reduction of metal ions to nanoparticle in a one-step and eco-friendly synthesis process. Natural plant extracts contain wide range of metabolites including carbohydrates, alkaloids, terpenoids, phenolic compounds, and enzymes...
December 3, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27915228/cytokines-il-17-and-il-22-in-the-host-response-to-infection
#2
Maria Valeri, Manuela Raffatellu
Cytokines IL-17 and IL-22 play pivotal roles in host defense against microbes and in the development of chronic inflammatory diseases. These cytokines are produced by cells that are often located in epithelial barriers, including subsets of T cells and innate lymphoid cells. In general, IL-17 and IL-22 can be characterized as important cytokines in the rapid response to infectious agents, both by recruiting neutrophils and by inducing the production of antimicrobial peptides. Although each cytokine induces an innate immune response in epithelial cells, their functional spectra are generally distinct: IL-17 mainly induces an inflammatory tissue response and is involved in the pathogenesis of several autoimmune diseases, whereas IL-22 is largely protective and regenerative...
December 2, 2016: Pathogens and Disease
https://www.readbyqxmd.com/read/27915042/non-coding-rnas-and-berberine-a-new-mechanism-of-its-anti-diabetic-activities
#3
REVIEW
Wenguang Chang
Type 2 Diabetes (T2D) is a metabolic disease with high mortality and morbidity. Non-coding RNAs, including small and long non-coding RNAs, are a novel class of functional RNA molecules that regulate multiple biological functions through diverse mechanisms. Studies in the last decade have demonstrated that non-coding RNAs may represent compelling therapeutic targets and play important roles in regulating the course of insulin resistance and T2D. Berberine, a plant-based alkaloid, has shown promise as an anti-hyperglycaemic, anti-hyperlipidaemic agent against T2D...
November 30, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27914965/a-review-on-synthesis-properties-and-applications-of-natural-polymer-based-carrageenan-blends-and-composites
#4
REVIEW
Khalid Mahmood Zia, Shazia Tabasum, Muhammad Nasif, Neelam Sultan, Nosheen Aslam, Aqdas Noreen, Mohammad Zuber
Carrageenan is a natural polysaccharide extracted from edible red seaweeds of Rhodophycea class. It has been used as a viscosity increasing or gelling agent for prolonged and controlled drug release, food, pharmaceuticals and other industries. However, in spite of wide range of applications, carrageenan has some drawbacks and adverse effects on the biological systems, so its modifications with natural and synthetic polymers are carried out. This review article presents different sources and properties of carrageenans with special emphasis on natural polymer based carrageenan blends and composites and their applications in controlled drug delivery system, wound dressing and tissue engineering because of their biodegradability and biocompatibility, food industry as thickening/gelling materials, cosmeceuticals and making polyelectrolyte complexes...
November 30, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27914946/design-synthesis-and-biological-evaluation-of-alkylamino-biphenylamides-as-hsp90-c-terminal-inhibitors
#5
Gaurav Garg, Huiping Zhao, Brian S J Blagg
Hsp90 is a promising therapeutic target for the development of anti-cancer agents due to its integral role in the stability and function of proteins associated with all ten hallmarks of cancer. Novobiocin, a coumarin antibiotic, was the first natural product identified that targeted the Hsp90 C-terminal domain and manifested anti-proliferative activity (SKBr3 IC50∼700μM). Subsequent structural investigations on novobiocin led to analogues with significantly improved anti-proliferative activity against multiple cancer cell lines...
November 19, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27914574/biological-therapies-immunomodulatory-drugs-worsening-of-psoriasis-and-rebound-effect-new-evidence-of-similitude
#6
REVIEW
Marcus Zulian Teixeira
BACKGROUND: Employing the secondary action or adaptative reaction of the organism as therapeutic response, homeopathy uses the treatment by similitude (similia similibus curentur) administering to sick individuals the medicines that caused similar symptoms in healthy individuals. Such homeostatic or paradoxical reaction of the organism is scientifically explained through the rebound effect of drugs, which cause worsening of symptoms after withdrawal of several palliative treatments. Despite promoting an improvement in psoriasis at the beginning of the treatment, modern biological therapies provoke worsening of the psoriasis (rebound psoriasis) after discontinuation of drugs...
November 2016: Homeopathy: the Journal of the Faculty of Homeopathy
https://www.readbyqxmd.com/read/27914063/episweep-computationally-driven-reengineering-of-therapeutic-proteins-to-reduce-immunogenicity-while-maintaining-function
#7
Yoonjoo Choi, Deeptak Verma, Karl E Griswold, Chris Bailey-Kellogg
Therapeutic proteins are yielding ever more advanced and efficacious new drugs, but the biological origins of these highly effective therapeutics render them subject to immune surveillance within the patient's body. When recognized by the immune system as a foreign agent, protein drugs elicit a coordinated response that can manifest a range of clinical complications including rapid drug clearance, loss of functionality and efficacy, delayed infusion-like allergic reactions, more serious anaphylactic shock, and even induced auto-immunity...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27913993/antifreeze-glycopeptides-from-structure-and-activity-studies-to-current-approaches-in-chemical-synthesis
#8
REVIEW
Małgorzata Urbańczyk, Jerzy Góra, Rafał Latajka, Norbert Sewald
Antifreeze glycopeptides (AFGPs) are a class of biological antifreeze agents found predominantly in Arctic and Antarctic species of fish. They possess the ability to regulate ice nucleation and ice crystal growth, thus creating viable life conditions at temperatures below the freezing point of body fluids. AFGPs usually consist of 4-55 repetitions of the tripeptide unit Ala-Ala-Thr that is O-glycosylated at the threonine side chains with β-D-galactosyl-(1 → 3)-α-N-acetyl-D-galactosamine. Due to their interesting properties and high antifreeze activity, they have many potential applications, e...
December 2, 2016: Amino Acids
https://www.readbyqxmd.com/read/27913771/safety-assessment-of-methyl-glucose-polyethers-and-esters-as-used-in-cosmetics
#9
Wilbur Johnson, Bart Heldreth, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen
The Cosmetic Ingredient Review Expert Panel (Panel) reviewed the safety of methyl glucose polyethers and esters which function in cosmetics as skin/hair-conditioning agents, surfactants, or viscosity increasing agents. The esters included in this assessment are mono-, di-, or tricarboxyester substituted methyl glucosides, and the polyethers are mixtures of various chain lengths. The Panel reviewed available animal and clinical data, including the molecular weights, log Kows, and other properties in making its determination of safety on these ingredients...
November 2016: International Journal of Toxicology
https://www.readbyqxmd.com/read/27913533/non-hodgkin-lymphoma-across-the-pediatric-and-adolescent-and-young-adult-age-spectrum
#10
John T Sandlund, Mike G Martin
The non-Hodgkin lymphomas (NHLs) occurring in children and adolescents and young adults (AYA) are characterized by various age-related differences in tumor biology and survival. Children generally present with high-grade lymphomas, such as Burkitt lymphoma, diffuse large B-cell lymphoma, lymphoblastic lymphoma, and anaplastic large cell lymphoma, whereas low-grade histologic subtypes, such as follicular lymphoma, occur more frequently with increasing age. Treatment outcome for children with NHL is generally superior to that observed in adults...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913517/treatment-of-low-risk-myelodysplastic-syndromes
#11
Valeria Santini
The majority of myelodysplastic syndrome (MDS) patients belong to the International Prognostic Scoring System (IPSS) and IPSS-revised (IPSS-R) lower-risk categories. Their precise diagnostics and prognostic stratification is often a challenge, but may ensure the optimization of therapy. The availability of diverse treatment options has significantly improved the quality of life and survival of this group of patients. Anemia is the most relevant cytopenia in terms of frequency and symptoms in lower-risk MDS, and may be treated successfully with erythropoietic stimulating agents, provided a careful selection is performed on the basis of IPSS-R, endogenous erythropoietin levels, and transfusion independence...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913493/novel-agents-in-follicular-lymphoma-choosing-the-best-target
#12
Laurie H Sehn
Outcomes in patients with follicular lymphoma (FL) have improved dramatically over the last decade. However, novel agents are greatly needed for those who exhibit treatment resistance, in order to minimize lifelong toxicity and to enable combinations that may allow us to achieve the elusive goal of cure. Biological advances have led to the discovery of a large number of potential therapeutic targets and the development of a plethora of novel agents designed to exploit these processes. Possible targets include tumor cell surface markers, key components of intracellular pathways and epigenetic mechanisms, and reactive cells of the microenvironment...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913244/higher-risk-of-hospitalization-and-serious-infection-among-patients-with-ulcerative-colitis-treated-with-adalimumab-compared-with-infliximab-in-a-nationwide-study
#13
Siddharth Singh, Nynne Nyboe Andersen, Mikael Andersson, Edward V Loftus, Tine Jess
BACKGROUND & AIMS: We compared the effectiveness and safety of infliximab and adalimumab in biologic-naïve patients with ulcerative colitis (UC), in a nationwide register-based propensity score-matched study of patients in Denmark. METHODS: We collected data from 1719 adults with UC, 15-75 years old, in Denmark who were treated with either infliximab or adalimumab as their first biologic agent. We compared rates of all-cause hospitalization, UC-related hospitalization, major abdominal surgery, and serious infections after a variable 2:1 propensity score matching, accounting for baseline clinical characteristics, disease severity, healthcare use, and use of UC-related medications...
November 29, 2016: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27912834/first-line-systemic-therapy-for-non-small-cell-lung-cancer
#14
REVIEW
Rebecca S Heist
Major advances in the treatment of metastatic non-small cell lung cancer have led to significant incremental improvements in patient outcomes. Platinum-based combination therapy remains the cornerstone of first-line therapy. The addition of biologic agents, such as bevacizumab or necitumumab, in selected populations has shown benefit over chemotherapy alone. The advent of maintenance therapy has also improved overall survival outcomes in selected populations of patients. Ongoing studies will further refine optimal treatment in the first-line setting and further advance first-line treatment options...
February 2017: Hematology/oncology Clinics of North America
https://www.readbyqxmd.com/read/27912816/mesenchymal-stem-cells-and-their-role-in-dental-medicine
#15
REVIEW
Xueli Mao, Yao Liu, Chider Chen, Songtao Shi
Mesenchymal stem cells (MSCs) have been discovered in almost every organ and tissue. MSCs are a heterogeneous population of cells with the capacity to self-renew and show multilineage differentiation. MSCs possess immunomodulatory properties by regulating multiple types of immune cells. They are emerging as a promising therapeutic agent, and have been widely used for cell-based tissue regeneration and immune therapies. A further understanding of the biological characteristics of MSCs is a prerequisite to develop more efficient MSC-based therapies...
January 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/27912143/coupling-of-helix-e-f-motion-with-the-o-nitrito-and-2-nitrovinyl-coordination-in-myoglobin
#16
Androulla Ioannou, Alexandra Lambrou, Vangelis Daskalakis, Eftychia Pinakoulaki
Myoglobin (Mb) is known to react slowly with nitirite to form the green pigment by NO2(-) cordination to the heme Fe in the O-binding nitrito (O1NO2) mode and to the heme 2-vinyl position. Nitrite is a powerful oxidizing agent and a biological reservoir for NO that has been implicated in a variety of aerobic biological systems. Accordingly, it is important to elucidate the nature and variety of NO2(-) reaction mechanisms with Mb. We have performed principal component analysis (PCA, or essential dynamics) on Molecular Dynamics trajectories of all MbNO2 coordination states to resolve the most important motions in the protein at 298K...
November 25, 2016: Biophysical Chemistry
https://www.readbyqxmd.com/read/27911676/tolerance-and-efficacy-with-simultaneous-use-of-two-monoclonal-antibodies-for-a-patient-with-hypereosinophilic-syndrome-and-ulcerative-colitis
#17
Bhavisha Patel, Joseph H Butterfield, Catherine R Weiler, Sunanda V Kane
The development and utilization of monoclonal antibodies (mAbs) have been of great interest in all fields of medicine. A substantial increase in the production and development of mAbs has occurred because these biologic agents are proving to be effective and less toxic given their targeted mechanism of action. However, data are limited on coadministration of two or more mAbs. With the increasing availability of mAbs and the comorbidities of some patients, assessment is needed of the ability to safely use multiple mAbs for an individual patient...
December 2, 2016: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/27911430/-clinical-presentations-of-herpes-zoster-ophthalmicus-diagnosis-and-therapy
#18
G M Chernakova, E A Kleshcheva, T B Semenova
: Approximately a quarter of the world's population at some point in life is at risk of developing shingles (Herpes Zoster). In 10-20% of cases the first branch of the trigeminal nerve gets involved (Herpes Zoster Ophthalmicus, HZO). Ophthalmic complications of HZO are able to cause a significant reduction in visual function. AIM: To study and summarize clinical features of HZO (including the rate of complications and their nature) and to determine the relationship between clinical and laboratory data from these patients...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911410/experimental-infection-with-listeria-monocytogenes-as-a-model-for-studying-host-interferon-%C3%AE-responses
#19
Jeeyoon Jennifer Ahn, Thirumahal Selvanantham, Monan Angela Zhang, Thierry Mallevaey, Shannon E Dunn
L. monocytogenes is a gram-positive bacterium that is a cause of food borne disease in humans. Experimental infection of mice with this pathogen has been highly informative on the role of innate and adaptive immune cells and specific cytokines in host immunity against intracellular pathogens. Production of IFN-γ by innate cells during sublethal infection with L. monocytogenes is important for activating macrophages and early control of the pathogen(1-3). In addition, IFN-γ production by adaptive memory lymphocytes is important for priming the activation of innate cells upon reinfection(4)...
November 16, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911272/foxo4-expression-is-related-to-stem-cell-like-properties-and-resistance-to-treatment-in-diffuse-large-b-cell-lymphoma
#20
Kyung Ju Ryu, Chaehwa Park, Mineui Hong, Young Hyeh Ko, Won Seog Kim, Seok Jin Kim
Cancer stem cells are proposed to be responsible for resistance to chemotherapeutic agents, including doxorubicin. As phenylbutyrate enhances cancer stem cell properties, we analyzed surviving lymphoma cells after treatment with doxorubicin and phenylbutyrate. Human B-cell lymphoma cell lines, including Toledo, BJAB, Daudi, and Raji were incubated with IC90 concentrations of doxorubicin (300 nM) or phenylbutyrate (8 mM). After 48 h, live cells were sorted and analyzed for their resistance to treatment by examining gene expression profiles using cDNA microarray and biological characteristics...
November 29, 2016: Oncotarget
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