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https://www.readbyqxmd.com/read/28532135/anthropometric-analysis-of-cephalofacial-dimensions-in-kerman-iran
#1
Fatemeh Pouya, Seyed Hassan Eftekhar-Vaghefi, Parvin Salehinejad
The human body dimensions are affected by ecological, biological, geographical, racial, sex, and age factors. Craniofacial measurements can be considered to be one of the important tools for determination of the morphological characteristics of the head and face. In this study, which was conducted on Persian adolescents living in Kerman/Iran, different forms of head and face were determined for using in various aspects of medicine. The study was conducted on 732 participants including 366 males and 366 females in the age of 18-20-year-old...
April 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28532128/band-offset-measurements-in-atomic-layer-deposited-al2o3-zn0-8al0-2o-heterojunction-studied-by-x-ray-photoelectron-spectroscopy
#2
Baojun Yan, Shulin Liu, Yuekun Heng, Yuzhen Yang, Yang Yu, Kaile Wen
Pure aluminum oxide (Al2O3) and zinc aluminum oxide (Zn x Al1-x O) thin films were deposited by atomic layer deposition (ALD). The microstructure and optical band gaps (E g ) of the Zn x Al1-x O (0.2 ≤ x ≤ 1) films were studied by X-ray diffractometer and Tauc method. The band offsets and alignment of atomic-layer-deposited Al2O3/Zn0.8Al0.2O heterojunction were investigated in detail using charge-corrected X-ray photoelectron spectroscopy. In this work, different methodologies were adopted to recover the actual position of the core levels in insulator materials which were easily affected by differential charging phenomena...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532118/facile-synthesis-of-polymeric-fluorescent-organic-nanoparticles-based-on-the-self-polymerization-of-dopamine-for-biological-imaging
#3
Yingge Shi, Ruming Jiang, Meiying Liu, Lihua Fu, Guangjian Zeng, Qing Wan, Liucheng Mao, Fengjie Deng, Xiaoyong Zhang, Yen Wei
Polymeric fluorescent organic nanoparticles (polymer-FONs) have raised considerable research attention for biomedical applications owing to their advantages as compared with fluorescent inorganic nanoparticles and small organic molecules. In this study, we presented an efficient, facile and environment-friendly strategy to produce polymer-FONs, which relied on the self-polymerization of dopamine and polyethyleneimine (PEI) in rather mild conditions. To obtain the final polymer-FONs, aldehyde group-containing copolymers (named as poly(UA-co-PEGMA)) were synthesized by reversible addition-fragmentation chain-transfer polymerization using polyethylene glycol methyl ether methacrylate (PEGMA) and 1-undecen-10-al (UA) as monomers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532102/islet-encapsulated-implantable-composite-hollow-fiber-membrane-based-device-a-bioartificial-pancreas
#4
Rohit S Teotia, Sachin Kadam, Atul Kumar Singh, Surendra Kumar Verma, Ashutosh Bahulekar, Sujata Kanetkar, Jayesh Bellare
Islets from xeno-sources and islet like clusters derived from autologus stem cells have emerged as alternatives to cadaveric pancreas used for treatment of type 1 diabetes. However, the immuno-isolation of these islets from the host immune system suffers from the issue of biocompatibility and hypoxia. To overcome the issues of immunobarrier biocompatibility, we developed a Polysulfone (Psf)/TPGS composite hollow fiber membrane (HFM) using a hollow fiber spinning pilot plant specially developed for this purpose...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532085/mesoporous-nano-bioglass-designed-for-the-release-of-imatinib-and-in-vitro-inhibitory-effects-on-cancer-cells
#5
Muhammad Shoaib, Aamer Saeed, Muhammad Saif Ur Rahman, Muhammad Moazzam Naseer
For treating bone cancer, controlled drug delivery is an important strategy. Bioactive scaffolds are widely used biomaterials due to their usefulness in localized drug delivery. The aim of this study was to develop mesoporous bioglass (MBG) with improved bioactivity and controllable drug delivery rate. By using pluronic 123 (P123) as a template, a facile sol-gel route was employed for the synthesis of MBG nanoparticles (NPs). The composition of the prepared sample was estimated by using energy dispersive X-ray spectroscopy (EDX)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532063/biodegradable-galactitol-based-crosslinked-polyesters-for-controlled-release-and-bone-tissue-engineering
#6
Janeni Natarajan, Sahitya Movva, Giridhar Madras, Kaushik Chatterjee
Various classes of biodegradable polymers have been explored towards finding alternates for the existing treatments for bone disorders. In this framework, two families of polyesters using an array of crosslinkers were synthesized. One was based on galactiol/adipic acid and the other based on galactitol/dodecanedioic acid. The structures of the polymers were confirmed by FTIR and further confirmed by (1)H NMR. DSC showed that the polymers were amorphous and the glass transition temperature increased with increase in crosslinking...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532062/polylactide-and-polycaprolactone-based-substrates-enhance-angiogenic-potential-of-human-umbilical-cord-derived-mesenchymal-stem-cells-in-vitro-implications-for-cardiovascular-repair
#7
Małgorzata Sekuła, Patrycja Domalik-Pyzik, Anna Morawska-Chochół, Sylwia Bobis-Wozowicz, Elżbieta Karnas, Sylwia Noga, Dariusz Boruczkowski, Marta Adamiak, Zbigniew Madeja, Jan Chłopek, Ewa K Zuba-Surma
Recent approaches in tissue regeneration focus on combining innovative achievements of stem cell biology and biomaterial sciences to develop novel therapeutic strategies for patients. Growing recent evidence indicates that mesenchymal stem cells harvested from human umbilical cord Wharton's jelly (hUC-MSCs) are a new valuable source of cells for autologous as well as allogeneic therapies in humans. hUC-MSCs are multipotent, highly proliferating cells with prominent immunoregulatory activity. In this study, we evaluated the impact of widely used FDA approved poly(α-esters) including polylactide (PLA) and polycaprolactone (PCL) on selected biological properties of hUC-MSCs in vitro...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531996/poly-epsilon-caprolactone-nanoparticles-enhance-ursolic-acid-in-vivo-efficacy-against-trypanosoma-cruzi-infection
#8
Juliana Palma Abriata, Josimar O Eloy, Thalita Bachelli Riul, Patricia Mazureki Campos, Marcelo Dias Baruffi, Juliana Maldonado Marchetti
Despite affecting millions of people worldwide, Chagas disease is still neglected by the academia and industry and the therapeutic option available, benznidazole, presents limited efficacy and side effects. Within this context, ursolic acid may serve as an option for treatment, however has low bioavailability, which can be enhanced through the encapsulation in polymeric nanoparticles. Therefore, herein we developed ursolic acid-loaded nanoparticles with poly-ε-caprolactone by the nanoprecipitation method and characterized them for particle size, zeta potential, polydispersity, encapsulation efficiency, morphology by scanning electron microscopy and thermal behavior by differential scanning calorimetry...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531993/fabrication-mechanical-properties-and-in-vitro-degradation-behavior-of-newly-developed-znag-alloys-for-degradable-implant-applications
#9
M Sikora-Jasinska, E Mostaed, A Mostaed, R Beanland, D Mantovani, M Vedani
Zn and Zn-based alloys have been recognized as highly promising biodegradable materials for orthopedic implants and cardiovascular stents, due to their proved biocompatibility and, more importantly, lower corrosion rates compared to Mg alloys. However, pure Zn has poor mechanical properties. In this study, Ag is used as a promising alloying element to improve the mechanical properties of the Zn matrix as well as its biocompatibility and antibacterial properties. Accordingly, we design three ZnAg alloys with Ag content ranging from 2...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531969/biogeographical-factors-affecting-the-distribution-of-stream-salamanders-on-the-cumberland-plateau-usa
#10
P R Gould, K K Cecala, S S Drukker, B A McKenzie, C Van de Ven
Geophysical and climate conditions play an important role in the distribution of organisms at both fine and broad scales. Headwater streams integrate changes at broad geographical scales and serve as important regions of nutrient processing and support high biodiversity. Stream salamanders are important members of headwater aquatic communities as both predators and prey. Combined with their biphasic life histories and physiological requirements, stream amphibians may serve as indicators for headwater stream conditions...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531967/climate-response-of-oak-quercus-spp-an-evidence-of-a-bioclimatic-boundary-induced-by-the-carpathians
#11
Constantin Nechita, Ionel Popa, Ólafur Eggertsson
Tree-ring information and climate response data were applied to investigate the potential of the Carpathian Mountains to influence tree-growth patterns. Recent studies reveal the importance of constructing a dense spatial network of oak tree-ring chronologies in this area, which may be the key to linking the North Central European and East Mediterranean tree records. We establish sixteen oak (Quercus robur L.) and sessile oak (Quercus petraea (Matt.) Liebl.) site chronologies along a longitudinal gradient (from 22...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531966/how-do-disturbances-and-climate-effects-on-carbon-and-water-fluxes-differ-between-multi-aged-and-even-aged-coniferous-forests
#12
Xuguang Tang, Hengpeng Li, Mingguo Ma, Li Yao, Matthias Peichl, Altaf Arain, Xibao Xu, Michael Goulden
Disturbances and climatic changes significantly affect forest ecosystem productivity, water use efficiency (WUE) and carbon (C) flux dynamics. A deep understanding of terrestrial feedbacks to such effects and recovery mechanisms in forests across contrasting climatic regimes is essential to predict future regional/global C and water budgets, which are also closely related to the potential forest management decisions. However, the resilience of multi-aged and even-aged forests to disturbances has been debated for >60years because of technical measurement constraints...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531965/does-arbuscular-mycorrhizal-fungus-affect-cadmium-uptake-and-chemical-forms-in-rice-at-different-growth-stages
#13
Na Luo, Xing Li, Ao Yu Chen, Li Jun Zhang, Hai Ming Zhao, Lei Xiang, Quan Ying Cai, Ce Hui Mo, Ming Hung Wong, Hui Li
Effects of the arbuscular mycorrhizal fungus (AMF) - Rhizophagus intraradices (a mix of root pieces, mycelium pieces and spores) on the temporal variation of Cd uptake and chemical forms in rice at four growth periods (tillering, jointing, flowering, and ripening stages) were investigated in soil added with 0, 2 and 10mgCdkg(-1). Results showed that the interactions amongst rice growth stages, soil Cd concentrations and mycorrhizal inoculation had significant effects (P˂0.001) on root biomass, straw and root Cd concentrations, and straw Cd chemical forms in rice...
May 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531963/mir-19b-and-mir-16-cooperatively-signaling-target-the-regulator-adra1a-in-hypertensive-heart-disease
#14
Liping He, Congxin Huang
BACKGROUND: Hypertensive heart disease (HHD) is one of the most important causes of disease-related deaths worldwide and brings great painful for patients. In recent years, increasingly evidences support the role of miRNAs in various physiology processes and human diseases. In the present study, we investigated whether ADRA1A regulated by miR-19b and miR-16 was involved in the pathogenic mechanism of HHD. METHODS: HHD mice models were established with injection of Deoxycorticosterone acetate (Doca)...
May 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531949/wastewater-discharge-impact-on-drinking-water-sources-along-the-yangtze-river-china
#15
Zhuomin Wang, Dongguo Shao, Paul Westerhoff
Unplanned indirect (de facto) wastewater reuse occurs when wastewater is discharged into surface waters upstream of potable drinking water treatment plant intakes. This paper aims to predict percentages and trends of de facto reuse throughout the Yangtze River watershed in order to understand the relative contribution of wastewater discharges into the river and its tributaries towards averting water scarcity concerns. The Yangtze River is the third longest in the world and supports more than 1/15 of the world's population, yet the importance of wastewater on the river remains ill-defined...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531947/shifts-in-the-relative-abundance-of-bacteria-after-wine-lees-derived-biochar-intervention-in-multi-metal-contaminated-paddy-soil
#16
Min Xu, Hongxia Xia, Jun Wu, Gang Yang, Xiaohong Zhang, Hong Peng, Xiaoyu Yu, Li Li, Hong Xiao, Hui Qi
The impact of biochar application on soil ecological functions depends on the diversity of soil conditions and of the feedstocks from which biochar is obtained. Moreover, little information is available on the effect of biochar on dynamic changes in microorganisms with the development of rice plants in multi-metal-contaminated paddy soil amended with wine-lees-derived biochar. In this paper, biochar obtained from the pyrolysis of wine lees at 600°C was used to investigate the potential role of biochar in maintaining soil ecological functions, with consideration of the alteration of the microbial population over periods of rice growth...
May 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531916/effects-of-elevated-atmospheric-co2-on-dissolution-of-geological-fluorapatite-in-water-and-soil
#17
Zhen Li, Mu Su, Da Tian, Lingyi Tang, Lin Zhang, Yangfan Zheng, Shuijin Hu
Most of phosphorus (P) is present as insoluble phosphorus-bearing minerals or organic forms in soil. Geological fluorapatite (FAp) is the dominant mineral-weathering source of P. In this study, FAp was added into water and soil under elevated CO2 to investigate the pathway of P release. Two types of soils (an acidic soil from subtropical China and a saline-alkali soil from Tibet Plateau, China) with similar total P content were studied. In the solution, increased CO2 in air enhanced the dissolution of FAp, i...
May 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28531914/lineage-specific-expression-of-mir-200-family-in-human-embryonic-stem-cells-during-in-vitro-differentiation
#18
Yeji Kim, Nury Kim, Sang-Wook Park, Hyemin Kim, Han-Jin Park, Yong-Mahn Han
Although microRNAs have emerged as key regulators in diverse cellular processes, the roles of microRNAs are poorly understood in human embryonic stem cells (hESCs) during differentiation into specialized cell types. In this study, we used a microRNA array with 799 human microRNA probes to examine the expression profiles of microRNAs in hESCs during differentiation into endodermal and mesodermal lineages in vitro. Among the microRNAs analyzed, 7 and 20 microRNAs were enriched in the developmental process of hESCs into mesodermal and endodermal lineages, respectively...
May 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28531912/from-bench-to-market-preparing-human-pluripotent-stem-cells-derived-cardiomyocytes-for-various-applications
#19
REVIEW
Sung-Hwan Moon, Daekyeong Bae, Taek-Hee Jung, Eun-Bin Chung, Young-Hoon Jeong, Soon-Jung Park, Hyung-Min Chung
Human cardiomyocytes (CMs) cease to proliferate and remain terminally differentiated thereafter, when humans reach the mid-20s. Thus, any damages sustained by myocardium tissue are irreversible, and they require medical interventions to regain functionality. To date, new surgical procedures and drugs have been developed, albeit with limited success, to treat various heart diseases including myocardial infarction. Hence, there is a pressing need to develop more effective treatment methods to address the increasing mortality rate of the heart diseases...
May 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28531908/methods-and-reporting-studies-assessing-fecal-microbiota-transplantation-a-systematic-review
#20
Aïda Bafeta, Amelie Yavchitz, Carolina Riveros, Rui Batista, Philippe Ravaud
Background: Fecal microbiota transplantation (FMT) could be a novel treatment option for several chronic diseases associated with altered gut microbiota. Purpose: To examine the conduct and reporting of studies assessing FMT. Data Sources: Cochrane Central Register of Controlled Trials, PubMed, EMBASE, and Web of Science from inception to 31 January 2017. Study Selection: Two reviewers independently examined titles and abstracts to identify all English-language reports of human clinical studies assessing the safety or efficacy of FMT...
May 23, 2017: Annals of Internal Medicine
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