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https://www.readbyqxmd.com/read/28432962/gc-ms-quantitative-analysis-of-black-market-pharmaceutical-products-containing-anabolic-androgenic-steroids-seized-by-the-brazilian-federal-police
#1
Diana Brito da Justa Neves, Eloisa Dutra Caldas
The use of counterfeit or substandard medicines can have an important health impact, resulting in therapeutic failure, be toxic or even cause death. Anabolic steroids are a frequent target for counterfeiters worldwide, being the second most frequent counterfeited class in Brazil. The aims of this work were to optimize and validate a GC-MS method for the quantitative determination of anabolic steroids in tablet, aqueous suspension and oil solution forms, and to analyze pharmaceutical products sent to Brazilian Federal Police (BFP) for forensic analysis...
April 5, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28432844/evaluating-new-hba1c-methods-for-adoption-by-the-ifcc-and-ngsp-reference-networks-using-international-quality-targets
#2
Erna Lenters-Westra, Emma English
BACKGROUND: As a reference laboratory for HbA1c, it is essential to have accurate and precise HbA1c methods covering a range of measurement principles. We report an evaluation of the Abbott Enzymatic (Architect c4000), Roche Gen.3 HbA1c (Cobas c513) and Tosoh G11 using different quality targets. METHODS: The effect of hemoglobin variants, other potential interferences and the performance in comparison to both the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) and the National Glycohemoglobin Standardization Program (NGSP) reference systems was assessed using certified evaluation protocols...
April 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28432684/characterization-of-interactions-of-metal-containing-nanoparticles-with-biomolecules-by-ce-an-update-2012-2016
#3
REVIEW
Svetlana S Aleksenko, Magdalena Matczuk, Andrei R Timerbaev
The methodological developments and applications of CE related to studying biotransformations of metal-based nanoscale particles of impending medicinal use are overviewed. This is an update to a previous review article (Aleksenko, S. S., Shmykov, A. Y., Oszwałdowski, S., Timerbaev, A. R., Metallomics 2012, 4, 1141-1148) and it covers the research papers published within the last five years. As was anticipated in that review, CE can now be seen as a customary technique in the analysis of biomolecular interactions that exert an impact on the mechanism of action of nanoparticles, comprising metabolism, delivery, cell processing, and targeting...
April 22, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28432031/membrane-lipid-replacement-for-chronic-illnesses-aging-and-cancer-using-oral-glycerolphospholipid-formulations-with-fructooligosaccharides-to-restore-phospholipid-function-in-cellular-membranes-organelles-cells-and-tissues
#4
REVIEW
Garth L Nicolson, Michael E Ash
Membrane Lipid Replacement is the use of functional, oral supplements containing mixtures of cell membrane glycerolphospholipids, plus fructooligosaccharides (for protection against oxidative, bile acid and enzymatic damage) and antioxidants, in order to safely replace damaged, oxidized, membrane phospholipids and restore membrane, organelle, cellular and organ function. Defects in cellular and intracellular membranes are characteristic of all chronic medical conditions, including cancer, and normal processes, such as aging...
April 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28431482/nanozyme-applications-in-biology-and-medicine-an-overview
#5
Jafar Golchin, Kazem Golchin, Neda Alidadian, Shahrooz Ghaderi, Sajjad Eslamkhah, Masoud Eslamkhah, Abolfazl Akbarzadeh
Nanozymes, in nature, are artificial enzymes. Innovated by Ronald Breslow to mimic enzymes. Nanozymes have widespread applications including targeted cancer therapy, diagnostic medicine and bio-sensing even environmental toxicology. However, these applications are a novel research field in biomedicine, but are growing fast. Enzyme-based applications such as immune-absorbent assay (ELIZA) are expensive because of the complexity of producing enzymes and antibodies. Not only, some nanoparticles can mimic these enzymes such as superoxides, but also they can manipulate biological pathways directly like autophagy...
April 21, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28431079/precision-pain-medicine-can-we-deliver-targeted-pain-therapies-for-the-oncologic-patient-in-the-21st-century
#6
Amitabh Gulati
No abstract text is available yet for this article.
April 20, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28430854/dynamic-modeling-and-network-approaches-for-omics-time-course-data-overview-of-computational-approaches-and-applications
#7
Yulan Liang, Arpad Kelemen
Inferring networks and dynamics of genes, proteins, cells and other biological entities from high-throughput biological omics data is a central and challenging issue in computational and systems biology. This is essential for understanding the complexity of human health, disease susceptibility and pathogenesis for Predictive, Preventive, Personalized and Participatory (P4) system and precision medicine. The delineation of the possible interactions of all genes/proteins in a genome/proteome is a task for which conventional experimental techniques are ill suited...
April 18, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28429764/fabrication-characterization-and-biological-evaluation-of-anti-her2-indocyanine-green-doxorubicin-encapsulated-peg-b-plga-copolymeric-nanoparticles-for-targeted-photochemotherapy-of-breast-cancer-cells
#8
Yu-Hsiang Lee, Da-Sheng Chang
In this study, we aimed to develop anti-human epidermal growth factor receptor 2 (HER2) indocyanine green (ICG)-doxorubicin (DOX)-encapsulated polyethylene glycol-poly(lactic-co-glycolic acid) diblock copolymeric nanoparticles (HIDPPNPs) to explore the co-administration of phototherapy and chemotherapy for HER2-overexpressing breast cancer, a highly aggressive and medicine-resistant breast carcinoma. The HIDPPNPs were fabricated using a solvent evaporation technique followed by carbodiimide-mediated antibody conjugation on the nanoparticle surface...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429672/the-molecular-mechanisms-of-thalidomide-teratogenicity-and-implications-for-modern-medicine
#9
J Knobloch, D Jungck, A Koch
Thalidomide is a teratogen that affects many organs but primarily induces limb truncations like phocomelia. Rodents are thalidomide resistant. In the 1950s, this has led to misinterpretations of animal tests and to the fatal assumption that the drug was safe for pregnant women to use against morning sickness. The result was one of the biggest scandals in medical history: 10.000 and more infants with birth defects in Europe. Nonetheless, thalidomide still has its place in modern medicine as it has strong therapeutic potential: it has been approved by the FDA for multiple myeloma and erythema nodosum leprosum, and its anti-inflammatory, immunomodulatory and anti-angiogenic activities are considered in many other refractory diseases...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28428687/lysyl-oxidase-its-diversity-in-health-and-diseases
#10
REVIEW
Suchitra Kumari, Tarun Kumar Panda, Tapaswini Pradhan
The mechanical properties of extracellular matrix (ECM) and connective tissues is largely dependent on the collagen and elastin structure. Lysyl oxidase (LOX) plays a critical role in the formation and repair of the ECM by oxidizing lysine residues in elastin and collagen, thereby initiating the formation of covalent cross linkages which stabilize these fibrous proteins. Due to its multiple functions both extracellularly and intracellularly, lysyl oxidase is involved in several processes in the tumorigenic pathway, in many different cancer types and stages...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28428157/texting-and-mobile-phone-app-interventions-for-improving-adherence-to-preventive-behavior-in-adolescents-a-systematic-review
#11
Sherif M Badawy, Lisa M Kuhns
BACKGROUND: Many preventable behaviors contribute to adolescent mortality and morbidity. Non-adherence to preventive measures represents a challenge and has been associated with worse health outcomes in this population. The widespread use of electronic communication technologies by adolescents, particularly the use of text messaging (short message service, SMS) and mobile phones, presents new opportunities to intervene on risk and preventive risk behavior, but little is known about their efficacy...
April 19, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28428074/melittin-inhibits-tumor-growth-and-decreases-resistance-to-gemcitabine-by-downregulating-cholesterol-pathway-gene-clu-in-pancreatic-ductal-adenocarcinoma
#12
Xinjing Wang, Jing Xie, Xiongxiong Lu, Hongzhe Li, Chenlei Wen, Zhen Huo, Junjie Xie, Minmin Shi, Xiaomei Tang, Hao Chen, Chenghong Peng, Yuan Fang, Xiaxing Deng, Baiyong Shen
Melittin is a Chinese traditional medicine for treating chronic inflammation, immunological diseases and cancers, however, the efficacy of melittin and its mechanism for treating pancreatic ductal adenocarcinoma (PDAC) are still unknown. Here we investigated the anti-cancer activity of melittin and its regulated mechanism(s) in the PDAC models. Melittin was found to suppress tumor growth by promoting cell apoptosis and cell-cycle arrest. Interestingly, the microarray analyses demonstrated that melittin significantly regulated cholesterol biosynthesis pathway during treatment...
April 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28427938/ganoderma-lucidum-reishi-suppresses-proliferation-and-migration-of-breast-cancer-cells-via-inhibiting-wnt-%C3%AE-catenin-signaling
#13
Yu Zhang
The medical mushroom Ganoderma lucidum (Reishi), a traditional Chinese medicine, has exhibited a promising anti-cancer effect. However, the molecular mechanism of its action on cancer cells remains unclear. Aberrant activation of Wnt/β-catenin signaling pathway is the cause of many types of cancer, including breast cancer. Here we investigated the effect of Reishi on Wnt/β-catenin signaling pathway and elucidated the molecular mechanism of its function in inhibiting breast cancer cells. We found that Reishi blocked Wnt/β-catenin signaling through inhibiting the phosphorylation of Wnt co-receptor LRP6...
April 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28427912/hepataprotective-effects-of-ginsenoside-rg1-a-review
#14
REVIEW
Yan Gao, Shifeng Chu, Zhao Zhang, Naihong Chen
BACKGROUND AND ETHNOPHARMACOLOGICAL RELEVANCE: Ginseng has been used as efficient tonic and for the treatment of various diseases including hepatic disorders. Ginseng saponins, also known as ginsenosides, are principal constituents and have been treated to be responsible for disparate ginseng health benefits. The current review mainly focuses on ginsenoside Rg1, a compound isolated from traditional Chinese herbal medicine Panax ginseng Meyer. AIMS: To summary the hepataprotective effects and related mechanisms of ginsenoside Rg1, we conclude this review by combining the literature and our own researches...
April 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28427561/molecular-targets-of-ascochlorin-and-its-derivatives-for-cancer-therapy
#15
Jason Chua Min-Wen, Benjamin Chua Yan-Jiang, Srishti Mishra, Xiaoyun Dai, Junji Magae, Ng Shyh-Chang, Alan Prem Kumar, Gautam Sethi
Cancer is an extremely complex disease comprising of a multitude of characteristic hallmarks that continue to evolve with time. At the genomic level, random mutations leading to deregulation of diverse oncogenic signal transduction cascades and polymorphisms coupled with environmental as well as life style-related factors are major causative agent contributing to chemoresistance and the failure of conventional therapies as well as molecular targeted agents. Hence, there is an urgent need to identify novel alternative therapies based on alternative medicines to combat this dreaded disease...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28427466/determinants-of-orphan-drugs-prices-in-france-a-regression-analysis
#16
Daria Korchagina, Aurelie Millier, Anne-Lise Vataire, Samuel Aballea, Bruno Falissard, Mondher Toumi
BACKGROUND: The introduction of the orphan drug legislation led to the increase in the number of available orphan drugs, but the access to them is often limited due to the high price. Social preferences regarding funding orphan drugs as well as the criteria taken into consideration while setting the price remain unclear. The study aimed at identifying the determinant of orphan drug prices in France using a regression analysis. METHODS: All drugs with a valid orphan designation at the moment of launch for which the price was available in France were included in the analysis...
April 21, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28427132/-influences-of-abar-gene-on-biofilm-formation-of-acinetobacter-baumannii
#17
H N Guo, J Xiang
Objective: To detect drug-resistant phenotype and abaR gene of Acinetobacter baumannii (AB) and investigate influences of abaR gene on biofilm formation of AB. Methods: From February to July 2014, 159 strains AB were collected from Department of Clinical Microbiology of Ruijin Hospital of School of Medicine of Shanghai JiaoTong University and numbered starting from 1 according time when they were collected. (1) The above-mentioned 159 strains of AB were identified by detecting gene sequence of 16S ribosomal DNA...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28426952/plant-viruses-and-bacteriophages-for-delivery-in-medicine-and-biotechnology
#18
REVIEW
Anna E Czapar, Nicole F Steinmetz
There are a wide variety of synthetic and naturally occurring nanomaterials under development for nanoscale cargo-delivery applications. Viruses play a special role in these developments, because they can be regarded as naturally occurring nanomaterials evolved to package and deliver cargos. While any nanomaterial has its advantage and disadvantages, viral nanoparticles (VNPs), in particular the ones derived from plant viruses and bacteriophages, are attractive options for cargo-delivery as they are biocompatible, biodegradable, and non-infectious to mammals...
April 17, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28426226/brain-uptake-of-bioactive-flavones-in-scutellariae-radix-and-its-relationship-to-anxiolytic-effect-in-mice
#19
Sophia Yui Kau Fong, Chenrui Li, Yiu Cheong Ho, Rui Li, Qian Wang, Yin Cheong Wong, Hong Xue, Zhong Zuo
Scutellariae Radix (SR) and its bioactive flavones elicit a variety of effects in the brain. However, the brain uptake of individual SR flavones and its relationship to the elicited effects after SR administration remain unknown. Moreover, previous studies seldom measured pharmacokinetic and pharmacodynamic outcomes simultaneously. In the current study, the brain uptake of six major SR flavones and the anxiolytic behavior following oral administration of a SR extract at two clinically relevant doses (600 and 1200 mg/kg twice daily) were simultaneously investigated in mice (n=18 per group)...
April 20, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28425888/-satisfa%C3%A3-%C3%A3-o-com-o-internato-m%C3%A3-dico-em-portugal
#20
Miguel Bigotte Vieira, Pedro Godinho, Nuno Gaibino, Raquel Dias, Agostinho Sousa, Inês Madanelo, Francisco Ribeiro-Mourão, Mariana Brandão, Sónia Duarte, Tiago Meirinhos, Ana Luísa Catarino, Cláudio Espírito Santo, Ricardo Caiado, Ricardo Marques, Ana Gonçalves Ferreira, Carlos Ramalheira, João Valente Jorge, Marta Losada, Mário Santos, Edson Oliveira, João Paulo Farias, José Manuel Silva
INTRODUCTION: In the last years, the global context of medical education and Medical Residency programs in Portugal suffered substantial changes. The primary objective of this study was to evaluate and characterize medical residents ́ satisfaction with medical residency programs in Portugal and to identify features that could be improved. MATERIAL AND METHODS: We utilized as model the survey Postgraduate Hospital Educational Environment Measure that has been developed in the United Kingdom and is speci cally targeted to medical residents...
December 30, 2016: Acta Médica Portuguesa
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