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https://www.readbyqxmd.com/read/28532117/optimization-for-extracellular-biosynthesis-of-silver-nanoparticles-by-penicillium-aculeatum-su1-and-their-antimicrobial-activity-and-cytotoxic-effect-compared-with-silver-ions
#1
Liang Ma, Wei Su, Jian-Xin Liu, Xiao-Xi Zeng, Zhi Huang, Wen Li, Zheng-Chun Liu, Jian-Xin Tang
The present study addresses an eco-friendly and energy-saving method for extracellular biosynthesis of silver nanoparticles (AgNPs) using a cell free filtrate of the fungus strain Penicillium aculeatum Su1 as a reducing agent. Parametric optimization of the biosynthesis process demonstrated different effects on the size, distribution, yield, and synthesis rate of biosynthesized AgNPs. The transmission electron microscopy (TEM) measurements demonstrated that AgNPs were spherical or approximately spherical, with a size between 4 and 55nm...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532046/inhibition-of-tnf-%C3%AE-sepsis-of-lipopolysaccharide-induction-using-nano-cerium-oxide-system
#2
Lingqing Ge, Qiaozhen Hu, Jing Chen, Mengrao Shi, Huiyun Yang, Guoji Zhu
Nowadays sepsis was one of the major threatening issues all over the globe which majorly causes death in high rate. To treat sepsis only few reports have been proposed with the help of anti-oxidants. This manuscript stated that the grape is rich in anti-oxidant, with the help of anti-oxidant rich grape extract Cerium oxide nanoparticles (CeO2 NPs) were synthesized eco-friendly. Further the synthesized CeO2 NPs subjected for various characterization studies which resulted in 37nm of size with agglomerated spherical shape particles...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530186/synthesis-and-characterisation-of-neem-leaf-extract-2-3-dehydrosalanol-and-quercetin-dihydrate-mediated-silver-nano-particles-for-therapeutic-applications
#3
Bodaballa Avinash, Ravipati Venu, Tollamadugu N V K V Prasad, Mekapogu Alpha Raj, Kothapalli Srinivasa Rao, Chintamaneni Srilatha
The utility of green silver nanoparticles (AgNPs) in veterinary medicine is steadily increasing as they have many therapeutic applications against pathogens and arthropods of livestock. In this study, green AgNPs using neem (N-AgNPs), 2,3-dehydrosalanol (2,3-DHS-AgNPs) and quercetin dihydrate (QDH-AgNPs) were synthesised and characterised. Synthesised compounds were characterised by UV-Vis spectroscopy and the peak absorbance was recorded at 370 nm for neem extract. For N-AgNPs, 2,3-DHS-AgNPs and QDH-AgNPs, the maximum absorbance peaks were at 430, 230 and 220 nm, respectively...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28530184/green-synthesis-of-silver-nanoparticles-using-mentha-pulegium-and-investigation-of-their-antibacterial-antifungal-and-anticancer-activity
#4
Ali Hamad Abd Kelkawi, Abolghasem Abbasi Kajani, Abdol-Khalegh Bordbar
A simple and eco-friendly method for efficient synthesis of stable colloidal silver nanoparticles (AgNPs) using Mentha pulegium extracts is described. A series of reactions was conducted using different types and concentrations of plant extract as well as metal ions to optimize the reaction conditions. AgNPs were characterized by using UV-vis spectroscopy, transmission electron microscopy, atomic force microscopy, dynamic light scattering, zetasizer, energy-dispersive X-ray spectroscopy (EDAX) and Fourier transform infrared spectroscopy (FTIR)...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28528217/citrus-maxima-pomelo-juice-mediated-eco-friendly-synthesis-of-zno-nanoparticles-applications-to-photocatalytic-electrochemical-sensor-and-antibacterial-activities
#5
N S Pavithra, K Lingaraju, G K Raghu, G Nagaraju
In the present work, Zinc oxide nanoparticles (ZnO Nps) have been successfully prepared through a simple, effective and low cost solution combustion method using Zn (NO3)2·6H2O as an oxidizer, chakkota (Common name=Pomelo) fruit juice as novel fuel. X-ray diffraction pattern indicates the hexagonal wurtzite structure with average crystallite size of ~22nm. ZnO Nps were characterized with the aid of different spectroscopic techniques such as Raman spectroscopy, Fourier Transform Infrared spectroscopy, Photoluminescence and UV-Visible spectroscopy...
May 16, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28528112/microencapsulation-and-characterization-of-liposomal-vesicles-using-a-supercritical-fluid-process-coupled-with-vacuum-driven-cargo-loading
#6
Wen-Chyan Tsai, Syed S H Rizvi
A new technique of liposomal microencapsulation, consisting of supercritical fluid extraction followed by rapid expansion of the supercritical solution and vacuum-driven cargo loading, was successfully developed. It is a continuous flow-through process without usage of any toxic organic solvent. For use as a coating material, the solubility of soy phospholipids in supercritical carbon dioxide was first determined using a dynamic equilibrium system and the data was correlated with the Chrastil model with good agreement...
June 2017: Food Research International
https://www.readbyqxmd.com/read/28527141/rice-agriculture-impacts-catchment-hydrographic-patterns-and-nitrogen-export-characteristics-in-subtropical-central-china-a-paired-catchment-study
#7
Yi Wang, Xinliang Liu, Hua Wang, Yong Li, Yuyuan Li, Feng Liu, Runlin Xiao, Jianlin Shen, Jinshui Wu
Increased nitrogen (N) concentrations in water bodies have highlighted issues regarding nutrient pollution in agricultural catchments. In this study, the ammonium-N (NH4(+)-N), nitrate-N (NO3(-)-N), and total N (TN) concentrations were observed in the stream water and groundwater of two contrasting catchments (named Tuojia and Jianshan) in subtropical central China from 2010 to 2014, to determine the rice agriculture impacts on the hydrographic patterns, and N export characteristics of the catchments. The results suggested that greater amounts of stream flow (523...
May 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28526570/role-of-medicinal-plants-on-growth-performance-and-immune-status-in-fish
#8
REVIEW
Elham Awad, Amani Awaad
Disease outbreaks increase proportionally with increases in intensive aquaculture. Natural products including medicinal plants have been known from thousands of years for treating some human diseases. It is well known that many active compounds are responsible for potential bio-activities. For that reason, there has been considerable interest in the use of medicinal plants in aquaculture with a view to providing safe and eco-friendly compounds for replacing antibiotics and chemical compounds as well as to enhance immune status and control fish diseases...
May 16, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28526419/a-brief-history-of-the-discovery-of-tick-borne-encephalitis-virus-in-the-late-1930s-based-on-reminiscences-of-members-of-the-expeditions-their-colleagues-and-relatives
#9
REVIEW
Vladimir I Zlobin, Vanda V Pogodina, Olaf Kahl
Tick-borne encephalitis virus is the etiological agent of a severe human disease transmitted by hard ticks. It occurs in large parts of eastern, central, and western Asia and in Europe with thousands of human cases each year. Here, the discovery of the virus by Soviet scientists in the late 1930s in the Far East is described. The pioneering work involved with this discovery, which resulted in great scientific and epidemiological achievement, was undertaken under the most difficult conditions, and some of the scientists and their technical assistants paid for it with their health and even their lives...
May 5, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28525943/effect-of-au-dextran-nps-as-anti-tumor-agent-against-eac-and-solid-tumor-in-mice-by-biochemical-evaluations-and-histopathological-investigations
#10
Dalia Medhat, Jihan Hussein, Mehrez E El-Naggar, Mohamed F Attia, Mona Anwar, Yasmine Abdel Latif, Hoda F Booles, Safaa Morsy, Abdel Razik Farrag, Wagdy K B Khalil, Zakaria El-Khayat
Dextran-capped gold nanoparticles (Au-dextran NPs) were prepared exploiting the natural polysaccharide polymer as both reducing and stabilizing agent in the synthesis process, aiming at studying their antitumor effect on solid carcinoma and EAC-bearing mice. To this end, Au-dextran NPs were designed via simple eco-friendly chemical reaction and they were characterized revealing the monodispersed particles with narrow distributed size of around 49nm with high negative charge. In vivo experiments were performed on mice...
May 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28523613/eco-friendly-and-cost-effective-ag-nanocrystals-fabricated-using-the-leaf-extract-of-habenaria-plantaginea-toxicity-on-six-mosquito-vectors-and-four-non-target-species
#11
Chinnadurai Aarthi, Marimuthu Govindarajan, Pichaimuthu Rajaraman, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Ramzi A Mothana, Nasir A Siddiqui, Giovanni Benelli
Recently, the biofabrication of metal nanoparticles has gained wide interest owing to its inherent features such as swift, simplicity, eco-friendliness, and cheaper costs. Different green-reducing agents led to the production of nanoparticles with varying toxicity on insects. In the current study, silver nanoparticles (AgNPs) were successfully synthesized using Habenaria plantaginea leaf extract. Ag nanoparticles were studied by UV-Vis spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM)...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28522793/diffuse-colonies-of-human-skin-fibroblasts-in-relation-to-cellular-senescence-and-proliferation
#12
Vadim Zorin, Alla Zorina, Nadezhda Smetanina, Pavel Kopnin, Ivan V Ozerov, Sergey Leonov, Artur Isaev, Dmitry Klokov, Andreyan N Osipov
Development of personalized skin treatment in medicine and skin care may benefit from simple and accurate evaluation of the fraction of senescent skin fibroblasts that lost their proliferative capacity. We examined whether enriched analysis of colonies formed by primary human skin fibroblasts, a simple and widely available cellular assay, could reveal correlations with the fraction of senescent cells in heterogenic cell population. We measured fractions of senescence associated β-galactosidase (SA-βgal) positive cells in either mass cultures or colonies of various morphological types (dense, mixed and diffuse) formed by skin fibroblasts from 10 human donors...
May 16, 2017: Aging
https://www.readbyqxmd.com/read/28522299/most-advisable-strategy-in-search-of-asymptomatic-target-organ-damage-in-hypertensive-patients
#13
J Abellán-Huerta, L Prieto-Valiente, L Consuegra-Sánchez, S Montoro-García, A B Salguero-Merino, R Morales-López, J Abellán-Alemán, F Soria-Arcos
OBJECTIVE: To evaluate the diagnostic potential of seven examinations in order to define the most suitable strategy for target organ damage (TOD) search in hypertensive patients. METHODS: This is a descriptive, cross-sectional study. 153 consecutive treated and essential hypertensive patients were enrolled. Patients with established cardiovascular or chronic renal disease (stage ≥4) were excluded. TOD search was assessed by: glomerular filtration rate (GFR), albumin/creatinine ratio (ACR), electrocardiogram (ECG), echocardiogram (ECO), ankle-brachial index (ABI), pulse wave velocity (PWV), and carotid ultrasound (intima media thickness and presence of plaques)...
May 15, 2017: Hipertensión y Riesgo Vascular
https://www.readbyqxmd.com/read/28521985/synthesis-and-flocculation-performance-of-a-chitosan-acrylamide-fulvic-acid-ternary-copolymer
#14
Tao Lou, Xuejun Wang, Guojun Song, Guangpeng Cui
The flocculant made from natural polymers gained prominence in recent years due to its eco-friendliness and low cost. In this study, two natural polymers of chitosan and fulvic acid were successfully grafted with a synthetic monomer of acrylamide as a new type of flocculant. The prepared chitosan-acrylamide-fulvic acid (CAMFA) exhibited an excellent capacity to remove three typical dyes, the color removal ratios were 97.0%, 91.6%, and 38.2%, respectively, at the dosage of 283mg/L for 100mg/L of acid blue 113, reactive black 5 and methyl orange...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28515782/ecotypic-differentiation-under-farmers-selection-molecular-insights-into-the-domestication-of-pachyrhizus-rich-ex-dc-fabaceae-in-the-peruvian-andes
#15
Marc Delêtre, Beatriz Soengas, Prem Jai Vidaurre, Rosa Isela Meneses, Octavio Delgado Vásquez, Isabel Oré Balbín, Monica Santayana, Bettina Heider, Marten Sørensen
Understanding the distribution of crop genetic diversity in relation to environmental factors can give insights into the eco-evolutionary processes involved in plant domestication. Yam beans (Pachyrhizus Rich. ex DC.) are leguminous crops native to South and Central America that are grown for their tuberous roots but are seed-propagated. Using a landscape genetic approach, we examined correlations between environmental factors and phylogeographic patterns of genetic diversity in Pachyrhizus landrace populations...
June 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/28515714/new-insights-into-pathogenic-vibrios-affecting-bivalves-in-hatcheries-present-and-future-prospects
#16
REVIEW
Javier Dubert, Juan L Barja, Jesús L Romalde
Hatcheries constitute nowadays the only viable solution to support the husbandry of bivalve molluscs due to the depletion and/or overexploitation of their natural beds. Hatchery activities include the broodstock conditioning and spawning, rearing larvae and spat, and the production of microalgae to feed all stages of the production cycle. However, outbreaks of disease continue to be the main bottleneck for successful larval and spat production, most of them caused by different representatives of the genus Vibrio...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28514636/eco-evolutionary-theory-and-insect-outbreaks
#17
David J Páez, Vanja Dukic, Jonathan Dushoff, Arietta Fleming-Davies, Greg Dwyer
Eco-evolutionary theory argues that population cycles in consumer-resource interactions are partly driven by natural selection, such that changes in densities and changes in trait values are mutually reinforcing. Evidence that the theory explains cycles in nature, however, is almost nonexistent. Experimental tests of model assumptions are logistically impractical for most organisms, while for others, evidence that population cycles occur in nature is lacking. For insect baculoviruses in contrast, tests of model assumptions are straightforward, and there is strong evidence that baculoviruses help drive population cycles in many insects, including the gypsy moth that we study here...
June 2017: American Naturalist
https://www.readbyqxmd.com/read/28513221/sericins-of-mulberry-and-non-mulberry-silkworms-for-eco-friendly-synthesis-of-silver-nanoparticles
#18
Wanna Chaisabai, Arunrat Khamhaengpol, Sineenat Siri
Green synthesis of silver nanoparticles (AgNPs) has received many interests as a simple, cost-effective, and environmentally friendly method. This study reported the use of sericins extracted from non-mulberry (Samia cynthia ricini) and mulberry (Bombyx mori) silkworms for green syntheses of AgNPs. Both sericins possessed the reducing activity, which the reducing activity of S. c. ricini sericin was significantly higher than that of B. mori sericin. The formation of AgNPs facilitated by S. c. ricini sericin was greater than B...
May 17, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28511354/occurrence-distribution-and-sources-of-bisphenol-analogues-in-a-shallow-chinese-freshwater-lake-taihu-lake-implications-for-ecological-and-human-health-risk
#19
Yanhua Liu, Shenghu Zhang, Ninghui Song, Ruixin Guo, Meihong Chen, Dina Mai, Zhengyu Yan, Zhihua Han, Jianqiu Chen
Since the production and use of BPA were regulated in China around 2008, several bisphenol analogues were widely used to substitute BPA in the manufacture of polycarbonates, epoxy resins, and plastics. However, there is limited understanding of the spatial distribution, potential sources and risk assessment for those bisphenol analogues. In this study, seven bisphenol analogues were investigated in water and sediment samples from Taihu Lake, China. Compared to the same lake in 2013 (range: 5.4-87ng/L for waters and 0...
May 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28508905/an-eco-friendly-in-situ-activatable-antibiotic-via-cucurbit-8-uril-mediated-supramolecular-crosslinking-of-branched-polyethylenimine
#20
Shengke Li, Nan Jiang, Wenxuan Zhao, Yuan-Fu Ding, Ying Zheng, Lian-Hui Wang, Jun Zheng, Ruibing Wang
We report an unprecedented, eco-friendly, in situ activatable model antibiotic, phenylalanyl-polyethylenimine (PhePEI), to potentially diminish antibiotic pollution of the environment and associated antibiotic resistance. The inactive PhePEI can be reversibly activated upon supramolecular crosslinking by cucurbit[8]uril, conferring potent antibacterial activity.
May 16, 2017: Chemical Communications: Chem Comm
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