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https://www.readbyqxmd.com/read/28820142/nanomelatonin-triggers-superior-anticancer-functionality-in-a-human-malignant-glioblastoma-cell-line
#1
Sanjeev Kumar Yadav, Anup Kumar Srivastava, Atul Dev, Babita Kaundal, Subhasree Roy Choudhury, Surajit Karmakar
Melatonin (MEL) has promising medicinal value as an anticancer agent in a variety of malignancies, but there are difficulties in achieving a therapeutic dose due to its short half-life, low bioavailability, poor solubility and extensive first-pass metabolism. In this study chitosan/tripolyphosphate (TPP) nanoparticles were prepared by an ionic gelation method to overcome the therapeutic challenges of melatonin and to improve its anticancer efficacy. Characterization of the melatonin-loaded chitosan (MEL-CS) nanoformulation was performed using transmission and scanning electron microscopies, dynamic light scattering, Fourier transform infrared spectroscopy, Raman spectroscopy and x-ray diffraction...
August 18, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28818953/new-horizons-for-precision-medicine-in-biliary-tract-cancers
#2
REVIEW
Juan W Valle, Angela Lamarca, Lipika Goyal, Jorge Barriuso, Andrew X Zhu
Biliary tract cancers (BTC), including cholangiocarcinoma and gallbladder cancer, are poor-prognosis and low-incidence cancers, although the incidence of intrahepatic cholangiocarcinoma is rising. A minority of patients present with resectable disease but relapse rates are high; benefit from adjuvant capecitabine chemotherapy has been demonstrated. Cisplatin/gemcitabine combination chemotherapy has emerged as the reference first-line treatment regimen; there is no standard second-line therapy. Selected patients may be suitable for liver-directed therapy (e...
August 17, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28817930/identification-of-a-new-zinc-binding-chemotype-by-fragment-screening
#3
Panagiotis K Chrysanthopoulos, Prashant Mujumdar, Lucy A Woods, Olan Dolezal, Bin Ren, Thomas S Peat, Sally-Ann Poulsen
The discovery of a new zinc binding chemotype from screening a non-biased fragment library is reported. Using the orthogonal fragment screening methods of native state mass spectrometry and surface plasmon resonance a 3-unsubstituted-2,4-oxazolidinedione fragment was found to have low micromolar binding affinity to the zinc metalloenzyme carbonic anhydrase II (CA II). This affinity approached that of fragment sized primary benzene sulfonamides, the classical zinc binding group found in most CA II inhibitors...
August 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28817780/us-internists-awareness-and-use-of-overtreatment-guidelines-a-national-survey
#4
Kira L Ryskina, Eric S Holmboe, Elizabeth Bernabeo, Rachel M Werner, Judy A Shea, Judith A Long
OBJECTIVES: To assess physician views and perceived adoption of overtreatment guidelines and measure whether adoption of these guidelines influenced the recommendation of a targeted service. STUDY DESIGN: A cross-sectional survey mailed from July 2014 to January 2015 to 902 internists who completed residency between 2003 and 2013, randomly selected from the American Medical Association Masterfile. METHODS: Poisson regression was used to model the rate of recommending a targeted service included in the guidelines, based on the level of guideline adoption...
July 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28817111/prospective-cohort-study-for-identification-of-underlying-genetic-causes-in-neonatal-encephalopathy-using-whole-exome-sequencing
#5
Theodora U J Bruun, Caro-Lyne DesRoches, Diane Wilson, Vann Chau, Tadashi Nakagawa, Masahiro Yamasaki, Shinya Hasegawa, Toshiyuki Fukao, Christian Marshall, Saadet Mercimek-Andrews
PurposeNeonatal encephalopathy, which is characterized by a decreased level of consciousness, occurs in 1-7/1,000 live-term births. In more than half of term newborns, there is no identifiable etiological factor. To identify underlying genetic defects, we applied whole-exome sequencing (WES) in term newborns with neonatal encephalopathy as a prospective cohort study.MethodsTerm newborns with neonatal encephalopathy and no history of perinatal asphyxia were included. WES was performed using patient and both parents' DNA...
August 17, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28815804/octadentate-picolinic-acid-based-bispidine-ligand-for-radiometal-ions
#6
Peter Comba, Una Jermilova, Chris Orvig, Brian O Patrick, Caterina F Ramogida, Katharina Rück, Christina Schneider, Miriam Starke
The synthesis of the octadentate bispidine ligand H2bispa2 bearing two picolinic acid pendant arms and its coordination chemistry with metal ions with radionuclides relevant for nuclear medicine, i.e. indium(III) (111In), lutetium(III) (177Lu) and lanthanum(III) (as surrogate for 225Ac), are reported. The non-radioactive metal complexes of the N6O2-type bispa ligand were characterized by 1H and 13C nuclear magnetic resonance spectroscopy, elemental analysis, mass spectrometry and single crystal X-ray analysis...
August 16, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28812769/multiplex-coaxial-flow-focusing-for-producing-multicompartment-janus-microcapsules-with-tunable-material-compositions-and-structural-characteristics
#7
Qiang Wu, Chaoyu Yang, Guangli Liu, Wanghuai Xu, Zhiqiang Zhu, Ting Si, Ronald X Xu
We propose a simple but efficient multiplex coaxial flow focusing (MCFF) process for single-step fabrication of multicompartment Janus microcapsules (MJMs) in a wide range of operating parameters. The produced MJMs consist of a multicompartmental core-shell structure with material compositions tunable in individual shell and core compartments. Potential applications of such a MJM agent are demonstrated in both benchtop and in vitro experiments. For the benchtop experiment, magnetic nanoparticles are loaded into one of the shell compartments and photopolymerized under ultraviolet light for controlled alignment and rotation of the microcapsules in a magnetic field...
August 16, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28810347/-history-of-world-neurosurgery
#8
X Wang
In 5000 BC, South American tribes digged the bones in the living head to seek ways to communicate with the gods, which was primitive trephination and may be the first neurosurgical behavior. In 2600 BC, Imhotep in ancient Egypt took the brain out of the head from the nose, for a better preserve of the mummy, which was a prototype of modern transsphenoidal surgery. And the development of anatomy in ancient Greek laid a solid foundation for neurosurgery. From 500 to 1500 AD, the rise of religion and the occurrence of war, prompted a large number of craniocerebral trauma, which contributed greatly to the early development of neurosurgery as a distinct specialty...
May 28, 2017: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28810345/-commentary-on-self-compiled-teaching-materialsby-singapore-chinese-physician-training-college
#9
S H Chen, H X Cai
The Singapore Chinese Physician Training College has been playing a role in the development of traditional Chinese medicine (TCM) and the training of TCM talents in modern and contemporary Singapore not to be ignored. Due to the limitations of the objective condition, the College had to creatively compile by themselves 115 volumes of teaching materials with rather complete subjects, which did pay attention to applying theory to practice, ran through the thought of Chinese integrating with western medicine, and is of literature and cultural significance...
May 28, 2017: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28810344/-discussion-on-medicinal-history-and-germplasm-resource-of-clinopodium-herba
#10
G Y Li, X W Song, W W Sheng, M Wang
By sorting out the literature on materiamedica, it is found that medicinal history of ClinopodiumHerba is rather long which can be traced back to caoxuejiein Lüchan yan ben cao (Mountainous Materia Medica) with definite efficacy and usage; it is generally believed that the original plant of ClinopodiumHerba is Clinopodiumpolycephalum (Vaniot) C. Y. Wu et Hsuan and C. chinensis (Benth.) O. Kuntze are two separate species, also some scholarsclaim that C. polycephalum and C. chinensisare the same plant. But I think C...
May 28, 2017: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28810342/-study-on-the-excavated-wooden-carved-acupuncture-statue-of-the-western-han-dynasty-in-laoguanshan
#11
L X Huang
The painted red lines on the wooden carved acupuncture statue of Western Han Dynasty in Laoguanshan, illustrate the running courses of the"eleven meridians"on the body surface in the early meridian doctrine. The carved white lines show the body surface running courses of the"twelve meridians"in the meridian doctrine and the Sanjiao images in Sanjiao doctrine. The dots on the wooden carved acupuncture statue are of two categories, one of them is of regulatory, round and concave spots, which are carved before the process of lacquer undercoat...
May 28, 2017: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28809470/chelation-controlled-additions-to-chiral-%C3%AE-and-%C3%AE-silyloxy-%C3%AE-halo-and-%C3%AE-vinyl-carbonyl-compounds
#12
Xinyuan Fan, Patrick J Walsh
The science and art of preventing and managing disease and prolonging life is dependent on advances in medicine, biology, and biochemistry. Many of these advances will involve interactions of small molecules with biological entities. As such, they will rely on the efficient synthesis of active compounds with very high stereochemical purity. Although enantioselective reactions are important in this regard, most stereocenters in complex molecule synthesis are installed in diastereoselective reactions. Perhaps the most well-known diastereoselective C-C bond-forming reaction is the addition of nucleophiles to carbonyl groups with α- or β-stereogenic centers...
August 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28804578/using-nanoparticles-in-medicine-for-liver-cancer-imaging
#13
REVIEW
Farideh Farokhi Moghadam
One of the most important types of liver cancer is hepatocellular carcinoma (HCC). HCC is the fifth most common cancer, and its correct diagnosis is very important. For the quick diagnosis of HCC, the use of nanoparticles is helpful. The major applications of nanoparticles are in medicine for organ imaging. Two methods of liver imaging are X-ray computed tomography (CT) and magnetic resonance imaging (MRI). In this review, we attempt to summarize some of the contrast agents used in imaging such as superparamagnetic iron oxide nanoparticles (SPIONs) and iron oxide nanoparticles (IONPs), various types of enhanced MRI for the liver, and nanoparticles like gold (AuNPs), which is used to develop novel CT imaging agents...
July 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28803375/lung-ultrasound-in-internal-medicine-efficiently-drives-the-management-of-patients-with-heart-failure-and-speeds-up-the-discharge-time
#14
Chiara Mozzini, Marco Di Dio Perna, Giancarlo Pesce, Ulisse Garbin, Anna Maria Fratta Pasini, Andrea Ticinesi, Antonio Nouvenne, Tiziana Meschi, Alder Casadei, Maurizio Soresi, Luciano Cominacini
Lung ultrasound (LUS) is a valid tool for the assessment of heart failure (HF) through the quantification of the B-lines. This study in HF patients aims to evaluate if LUS: (1) can accelerate the discharge time; (2) can efficiently drive diuretic therapy dosage; and (3) may have better performance compared to the amino-terminal portion of B type natriuretic peptide (NT-proBNP) levels in monitoring HF recovery. A consecutive sample of 120 HF patients was admitted from the Emergency Department (ED) to the Internal Medicine Department (Verona University Hospital)...
August 12, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28796521/sulfur-as-an-acceptor-to-bromine-in-biomolecular-halogen-bonds
#15
Melissa Coates Ford, Matthew Saxton, Pui Shing Ho
The halogen bond (X-bond) has become an important design element in chemistry, including medicinal chemistry and biomolecular engineering. Although oxygen is the most prevalent and best characterized X-bond acceptor in biomolecules, the interaction is seen with nitrogen, sulfur, and aromatic systems as well. In this study, we characterize the structure and thermodynamics of a Br···S X-bond between a 5-bromouracil base and a phosphorothioate in a model DNA junction. The single crystal structure of the junction shows the geometry of the Br···S to be variable, while calorimetric studies show that the anionic S acceptor is comparable to slightly more stable than the analogous O acceptor, with a -3...
August 10, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28795682/effects-of-antenatal-diet-and-physical-activity-on-maternal-and-fetal-outcomes-individual-patient-data-meta-analysis-and-health-economic-evaluation
#16
Ewelina Rogozińska, Nadine Marlin, Louise Jackson, Girish Rayanagoudar, Anneloes E Ruifrok, Julie Dodds, Emma Molyneaux, Mireille Nm van Poppel, Lucilla Poston, Christina A Vinter, Fionnuala McAuliffe, Jodie M Dodd, Julie Owens, Ruben Barakat, Maria Perales, Jose G Cecatti, Fernanda Surita, SeonAe Yeo, Annick Bogaerts, Roland Devlieger, Helena Teede, Cheryce Harrison, Lene Haakstad, Garry X Shen, Alexis Shub, Nermeen El Beltagy, Narges Motahari, Janette Khoury, Serena Tonstad, Riitta Luoto, Tarja I Kinnunen, Kym Guelfi, Fabio Facchinetti, Elisabetta Petrella, Suzanne Phelan, Tânia T Scudeller, Kathrin Rauh, Hans Hauner, Kristina Renault, Christianne Jm de Groot, Linda R Sagedal, Ingvild Vistad, Signe Nilssen Stafne, Siv Mørkved, Kjell Å Salvesen, Dorte M Jensen, Márcia Vitolo, Arne Astrup, Nina Rw Geiker, Sally Kerry, Pelham Barton, Tracy Roberts, Richard D Riley, Arri Coomarasamy, Ben Willem Mol, Khalid S Khan, Shakila Thangaratinam
BACKGROUND: Diet- and physical activity-based interventions in pregnancy have the potential to alter maternal and child outcomes. OBJECTIVES: To assess whether or not the effects of diet and lifestyle interventions vary in subgroups of women, based on maternal body mass index (BMI), age, parity, Caucasian ethnicity and underlying medical condition(s), by undertaking an individual patient data (IPD) meta-analysis. We also evaluated the association of gestational weight gain (GWG) with adverse pregnancy outcomes and assessed the cost-effectiveness of the interventions...
August 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28793969/lung-ultrasound-in-internal-medicine-a-bedside-help-to-increase-accuracy-in-the-diagnosis-of-dyspnea
#17
Tiziano Perrone, Alessia Maggi, Carmelo Sgarlata, Ilaria Palumbo, Elisa Mossolani, Sara Ferrari, Ariel Melloul, Roberta Mussinelli, Michele Boldrini, Ambra Raimondi, Aderville Cabassi, Francesco Salinaro, Stefano Perlini
BACKGROUND: Dyspnea is one of the most frequent causes of admission in Internal Medicine wards, leading to a sizeable utilization of medical resources. STUDY DESIGN AND METHODS: The role of bedside lung ultrasound (LUS) was evaluated in 130 consecutive patients (age: 81±9years), in whom blindly collected LUS results were compared with data obtained by clinical examination, medical history, blood analysis, and chest X-ray. Dyspnea etiology was classified as "cardiac" (n=80), "respiratory" (n=36) or "mixed" (n=14), according to the discharge diagnosis (congestive heart failure either alone [n=80] or associated with pneumonia [n=14], pneumonia [n=24], and obstructive disventilatory syndrome [n=12])...
August 6, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28791364/identification-of-the-active-compounds-and-significant-pathways-of-yinchenhao-decoction-based-on-network-pharmacology
#18
Jihan Huang, Fan Cheung, Hor-Yue Tan, Ming Hong, Ning Wang, Juan Yang, Yibin Feng, Qingshan Zheng
Yinchenhao decoction (YCHD) is a traditional Chinese medicine formulation, which has been widely used for the treatment of jaundice for 2,000 years. Currently, YCHD is used to treat various liver disorders and metabolic diseases, however its chemical/pharmacologic profiles remain to be elucidated. The present study identified the active compounds and significant pathways of YCHD based on network pharmacology. All of the chemical ingredients of YCHD were retrieved from the Traditional Chinese Medicine Systems Pharmacology database...
August 2, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28790914/ethnopharmacological-and-chemical-characterization-of-salvia-species-used-in-valencian-traditional-herbal-preparations
#19
Vanessa Martínez-Francés, Emeline Hahn, Segundo Ríos, Diego Rivera, Eike Reich, Roser Vila, Salvador Cañigueral
In Valencia Region (Spain), some wild and cultivated sages are used for medicinal purposes. Among them, Salvia officinalis subsp. lavandulifolia (SL) is widely employed and known for production of Spanish sage oil and herbal products. Nevertheless, it shares the market with S. blancoana subsp. mariolensis (SB) and, to a lesser extent, with their hybrid S. x hegelmaieri (SH). The knowledge on these two species is far low and confusion between them is possible. The aim of the present paper is to improve the ethnopharmacological, morphological and chemical knowledge of these sages, and to contribute to setting up quality specifications for improving identification and distinction from other Salvia species, such as, S...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28782725/the-bio-in-the-ink-cartilage-regeneration-with-bioprintable-hydrogels-and-articular-cartilage-derived-progenitor-cells
#20
Riccardo Levato, William R Webb, Iris A Otto, Anneloes Mensinga, Yadan Zhang, Mattie van Rijen, René van Weeren, Ilyas M Khan, Jos Malda
Cell-laden hydrogels are the primary building blocks for bioprinting, and, also termed bioinks, are the foundations for creating structures that can potentially recapitulate the architecture of articular cartilage. To be functional, hydrogel constructs need to unlock the regenerative capacity of encapsulated cells. The recent identification of multipotent articular cartilage-resident chondroprogenitor cells (ACPCs), which share important traits with adult stem cells, represents a new opportunity for cartilage regeneration...
August 4, 2017: Acta Biomaterialia
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