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https://www.readbyqxmd.com/read/29169186/prenylated-flavonoids-and-phenolic-compounds-from-the-rhizomes-of-marine-phanerogam-cymodocea-nodosa
#1
Abla Smadi, Maria Letizia Ciavatta, Fatma Bitam, Marianna Carbone, Guido Villani, Margherita Gavagnin
Chemical investigation of the rhizomes of the marine phanerogam Cymodocea nodosa resulted in the isolation of two new prenylated flavon-di-O-glycosides, cymodioside A (1) and B (2), along with known phenolic compounds 3-7, some of which never reported from seagrasses to date. The structures of compounds 1 and 2 were established by extensive nuclear magnetic resonance analysis. In addition, the absolute configuration of 4-(2,5-dihydroxyhexyl) benzene-1,2-diol (7), which was not previously reported in the literature, has been now determined...
November 23, 2017: Planta Medica
https://www.readbyqxmd.com/read/29169092/triterpenoids-with-antiplatelet-aggregation-activity-from-ilex-rotunda
#2
Bao Yang, Jin-Ping Zhu, Li Rong, Jing Jin, Di Cao, Hui Li, Xing-Hong Zhou, Zhong-Xiang Zhao
Phytochemical studies on the barks of Ilex rotunda Thunb. had resulted in the isolation of seven previously undescribed triterpenoids, rotundinosides E-K, along with sixteen known ones. The structures of previously undescribed compounds were elucidated on the basis of extensive spectroscopic analysis and the sugar moieties were further identified by HPLC and GC after acid hydrolysis. Among the isolates, rotundinoside F featured a rare triterpene-phenylpropanoid hybrid structure and rotundinoside H was an uncommon triterpene saponin with α-linked glucopyranosyl moiety at C-3...
November 20, 2017: Phytochemistry
https://www.readbyqxmd.com/read/29169077/quantifying-the-exposure-of-humans-and-the-environment-to-oil-pollution-in-the-niger-delta-using-advanced-geostatistical-techniques
#3
Christopher B Obida, G Alan Blackburn, J Duncan Whyatt, Kirk T Semple
The Niger Delta is one of the largest oil producing regions of the world. Large numbers and volumes of oil spills have been reported in this region. What has not been quantified is the putative exposure of humans and/or the environment to this hydrocarbon pollution. In this novel study, advanced geostatistical techniques were applied to an extensive database of oil spill incidents from 2007 to 2015. The aims were to (i) identify and analyse spill hotspots along the oil pipeline network and (ii) estimate the exposure of the hydrocarbon pollution to the human population and the environment within the Niger Delta...
November 20, 2017: Environment International
https://www.readbyqxmd.com/read/29169054/reliability-and-validity-of-a-coda-motion-3-d-analysis-system-for-measuring-cervical-range-of-motion-in-healthy-subjects
#4
Hui Song, Xu Zhai, Zhongyang Gao, Teng Lu, Qian Tian, Haopeng Li, Xijing He
In the past two decades, many tools have been reported to measure the cervical range of motion (CROM), but most of the results are controversial in healthy individuals and/or individuals with neck pain. The Coda Motion 3-D Analysis system is a new instrument that measures three-dimensional joint movement. However, measurements of CROM using this system have yet to be conducted. Here, we investigate the reliability and validity of the Coda Motion 3-D Analysis System for measuring CROM in healthy adults. Sixty healthy volunteers were involved in this reliability study...
November 15, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29168928/regulation-of-kv1-4-potassium-channels-by-pkc-and-ampk-kinases
#5
Martin Nybo Andersen, Lasse Skibsbye, Arnela Saljic, Martin Zahle Larsen, Hanne Borger Rasmussen, Thomas Jespersen
Over the last years extensive kinase-mediated regulation of a number of voltage-gated potassium (Kv) channels important in cardiac electrophysiology has been reported. This includes regulation of Kv1.5, Kv7.1 and Kv11.1 cell surface expression, where the kinase-mediated regulation appears to center around the ubiquitin ligase Nedd4-2. In the present study we examined whether Kv1.4, constituting the cardiac Ito,s current, is subject to similar regulation. In the epithelial Madin-Darby Canine Kidney (MDCK) cell line, which constitutes a highly reproducible model system for addressing membrane targeting, we find, by confocal microscopy, that Kv1...
November 23, 2017: Channels
https://www.readbyqxmd.com/read/29168877/full-angle-tomographic-phase-microscopy-of-flowing-quasi-spherical-cells
#6
Massimiliano M Villone, Pasquale Memmolo, Francesco Merola, Martina Mugnano, Lisa Miccio, Pier Luca Maffettone, Pietro Ferraro
We report a reliable full-angle tomographic phase microscopy (FA-TPM) method for flowing quasi-spherical cells along microfluidic channels. This method lies in a completely passive optical system, i.e. mechanical scanning or multi-direction probing of the sample is avoided. It exploits the engineered rolling of cells while they are flowing along a microfluidic channel. Here we demonstrate significant progress with respect to the state of the art of in-flow TPM by showing a general extension to cells having almost spherical shapes while they are flowing in suspension...
November 23, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29168760/mesenchymal-stromal-cells-for-antineoplastic-drug-loading-and-delivery
#7
REVIEW
Francesco Petrella, Isabella Rimoldi, Stefania Rizzo, Lorenzo Spaggiari
Mesenchymal stromal cells are a population of undifferentiated multipotent adult cells possessing extensive self-renewal properties and the potential to differentiate into a variety of mesenchymal lineage cells. They express broad anti-inflammatory and immunomodulatory activity on the immune system and after transplantation can interact with the surrounding microenvironment, promoting tissue healing and regeneration. For this reason, mesenchymal stromal cells have been widely used in regenerative medicine, both in preclinical and clinical settings...
November 23, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/29168674/breast-conserving-surgery-versus-mastectomy-overall-and-relative-survival-a-population-based-study-by-the-danish-breast-cancer-cooperative-group-dbcg
#8
Peer Christiansen, Stina Lyck Carstensen, Bent Ejlertsen, Niels Kroman, Birgitte Offersen, Anne Bodilsen, Maj-Britt Jensen
BACKGROUND: Observational studies have pointed at a better survival after breast conserving surgery (BCS) compared with mastectomy. The aim of the present study was to evaluate whether this remains true when more extensive tumor characteristics and treatment data were included. METHODS: The cohort included patients registered after primary surgery for early invasive breast cancer in the database of the Danish Breast Cancer Cooperative Group, in the period 1995-2012...
November 23, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29168634/enhanced-performance-of-perovskite-solar-cells-with-zinc-chloride-additives
#9
Junjie Jin, Hao Li, Cong Chen, Boxue Zhang, Lin Xu, Biao Dong, Hongwei Song, Qilin Dai
Perovskite solar cells (PSCs) have attracted extensive attention due to their impressive photovoltaic performance. The quality of perovskite layer is very critical to achieve high device performance. Here, we explore the partial substitution of PbI2 by ZnCl2 in the preparation of CH3NH3PbI3 and its effects on perovskite morphological, optical properties, and the photovoltaic performance. Consequently, the device with 3% ZnCl2 shows greatly improvement in power conversion efficiency (PCE) from 16.4% to 18.2% compared to control device...
November 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29168591/sampling-of-wide-local-excision-specimens-in-cutaneous-malignant-melanoma
#10
Cassie Fives, Cynthia C B B Heffron
BACKGROUND: Wide local excisions (WLE) are frequently undertaken in the management of cutaneous melanoma; however there is considerable variability in their macroscopic sampling. The aim of our study was to establish evidence-based guidelines for the macroscopic handling of these specimens with a subsequent review of the impact on our service. METHODS: The study group of 128 cases with initial biopsy and subsequent WLE in our institution in 2010 were identified by a computer-generated search...
November 23, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29168532/complete-tetraglycosylation-of-a-calix-4-arene-by-a-chemo-enzymatic-approach
#11
Silvia Bernardi, Dong Yi, Ning He, Alessandro Casnati, Wolf-Dieter Fessner, Francesco Sansone
Polyglycosylated calixarenes are efficient and selective multivalent ligands for lectins. However, the chemical decoration of these macrocyclic scaffolds with saccharides of increasing complexity is hampered by the highly complex chemistry of carbohydrates. An alternative to the conventional approach is the enzymatic diversification of simple glycocluster-presented glycans. In this work, we present a highly efficient chemo-enzymatic approach to tetra-N-acetyl-lactosaminylcalix[4]arene via glycan extension catalyzed by a human β-1,4-galactosyltransferase...
November 23, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29168523/electroconductive-nanoscale-topography-for-enhanced-neuronal-differentiation-and-electrophysiological-maturation-of-human-neural-stem-cells
#12
Kisuk Yang, Seung Jung Yu, Jong Seung Lee, Hak-Rae Lee, Gyeong-Eon Chang, Jungmok Seo, Taeyoon Lee, Eunji Cheong, Sung Gap Im, Seung-Woo Cho
Biophysical cues, such as topography, and electrical cues can provide external stimulation for the promotion of stem cell neurogenesis. Here, we demonstrate an electroconductive surface nanotopography for enhancing neuronal differentiation and the functional maturation of human neural stem cells (hNSCs). The electroconductive nanopatterned substrates were prepared by depositing a thin layer of titanium (Ti) with nanograting topographies (150 to 300 nm groove/ridge, the thickness of the groove - 150 μm) onto polymer surfaces...
November 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/29168510/a-laboratory-heterodyne-emission-spectrometer-at-submillimeter-wavelengths
#13
N Wehres, J Maßen, K Borisov, B Schmidt, F Lewen, U U Graf, C E Honingh, D R Higgins, S Schlemmer
We present first results on a newly built broadband emission spectrometer for the laboratory making use of a double sideband (DSB) heterodyne receiver. The new spectrometer is perfectly suited for high-resolution emission spectroscopy of molecules of astrophysical importance. The current SIS receiver operates at RF frequencies between 270 and 390 GHz, coincident with Band 7 of the ALMA telescope. The instantaneous bandwidth is 5 GHz (DSB). In this work the full spectrometer and its components are described...
November 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29168447/a-brief-summary-of-the-epidemiology-and-genetic-relatedness-of-avian-influenza-h9n2-virus-in-birds-and-mammals-in-the-middle-east-and-north-africa
#14
A Nagy, T C Mettenleiter, E M Abdelwhab
H9N2 is the most widespread avian influenza virus subtype in poultry worldwide. It infects a broad spectrum of host species including birds and mammals. Infections in poultry and humans vary from silent to fatal. Importantly, all AIV, which are fatal in humans (e.g. H5N1, H7N9) acquired their 'internal' gene segments from H9N2 viruses. Although H9N2 is endemic in the Middle East (ME) and North Africa since the late 1990s, little is known about its epidemiology and genetics on a regional level. In this review, we summarised the epidemiological situation of H9N2 in poultry and mammals in Iran, Iraq, Kuwait, Qatar, United Arab Emirates, Oman, Bahrain, Yemen, Saudi Arabia, Jordan, Palestine, Israel, Syria, Lebanon, Turkey, Egypt, Sudan, Libya, Tunisia, Algeria and Morocco...
November 23, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/29168440/women-s-empowerment-and-gender-inequality-in-adolescent-nutritional-status-evidence-from-the-indonesian-family-life-survey
#15
Yohanes Sondang Kunto, Hilde Bras
In contrast to the extensive knowledge on the association between women's empowerment and the nutritional status of children under the age of five, relatively little is known about the influence of women's empowerment on adolescents' nutritional status. This study aimed to assess the association between women's empowerment and gender inequalities in adolescent nutritional status. Data were from the Indonesian Family Life Survey (IFLS) covering the period 1997 to 2015, and consisted of 16,683 observations from 13,396 adolescents between the ages of 10 and 19 years born in 6781 families...
November 23, 2017: Journal of Biosocial Science
https://www.readbyqxmd.com/read/29168430/triple-negative-breast-cancer-prognostic-role-of-immune-related-factors-a-systematic-review
#16
Elisabeth Specht Stovgaard, Dorte Nielsen, Estrid Hogdall, Eva Balslev
PURPOSE: Treatment of breast cancer has been increasingly successful in recent years with the advent of HER2-receptor targeted treatment and endocrine treatment. However, the triple negative subgroup of breast cancer (TNBC) (estrogen-, progesterone- and HER2-receptor negative) still lacks targeted treatment options. TNBC is a type of breast cancer that often affects younger women, and generally has a worse prognosis than other types of breast cancer. Recently, the complex role of the immune system in cancer growth, elimination and metastasis has been the object of increased attention...
November 23, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29168380/quantitative-study-of-oligomerization-of-yeast-prion-sup35nm-proteins
#17
Yanjing Wang, Chi Wu
The fibrillation of misfolded neurodegenerative diseases related proteins has been extensively studied in the last few decades, but the initial oligomerization has been rarely touched even though some recent evidences indicated that small protein oligomers are more neurotoxic than long protein fibers. It is rather difficult to study the initial oligomerization (nucleation) because most of experimental methods, such as β-sheet related fluorescence assay and X-ray diffraction, are helpless in detecting small structure-less protein oligomers...
November 23, 2017: Biochemistry
https://www.readbyqxmd.com/read/29168236/a-prospective-multicenter-phase-ii-study-of-intrabone-marrow-transplantation-of-unwashed-cord-blood-using-reduced-intensity-conditioning
#18
Masaya Okada, Taizo Tasaka, Kazuhiro Ikegame, Nobuyuki Aotsuka, Takeshi Kobayashi, Yuho Najima, Yoshiko Matsuhashi, Hideho Wada, Hirotoshi Tokunaga, Shinichi Masuda, Yoshikazu Utsu, Satoshi Yoshihara, Katsuji Kaida, Takashi Daimon, Hiroyasu Ogawa
Cord blood transplantation (CBT) is associated with delayed hematopoietic recovery and graft failure. To overcome these problems, we conducted a prospective, multicenter phase II study of intrabone marrow transplantation in which patients received reduced-intensity conditioning without anti-thymocyte globulin. The primary endpoint was the probability of full donor engraftment. Forty patients with hematologic malignancies were enrolled. CB cells were injected without washing into 4 iliac bone sites (2 at each hemipelvis), at which approximately 6 mL of CB was administered at one site with local anesthesia...
November 23, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29168189/imaging-mass-spectrometry-for-novel-insights-into-contact-allergy%C3%A2-%C3%A2-a-proof-of-concept-study-on-nickel
#19
Per Malmberg, Thomas Guttenberg, Marica B Ericson, Lina Hagvall
BACKGROUND: In spite of extensive regulation to limit exposure, nickel remains the main cause of contact allergy in the general population. More detailed knowledge on the skin uptake of haptens is required. So far, no method exists for the visualization of clinically relevant haptens and their distribution in the skin. OBJECTIVES: To show, in terms of a proof of concept, that imaging mass spectrometry [time of flight secondary ion mass spectrometry (ToF-SIMS)] can be applied for investigation of the penetration and distribution of nickel in human skin...
November 23, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/29168160/cladribine-to-treat-relapsing-forms-of-multiple-sclerosis
#20
REVIEW
Gavin Giovannoni
Cladribine is a purine nucleoside analogue that selectively depletes peripheral lymphocytes without a major impact on cells of the innate immune system. An oral formulation of cladribine has been developed to be given as short courses over two annual cycles. Oral cladribine results in the peripheral depletion of lymphocytes that is gradual, occurring over several weeks, and is not associated with a cell lysis syndrome, has a greater impact on B cells than T cells, and is followed by gradual reconstitution of the peripheral lymphocyte counts over several months...
November 22, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
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