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https://www.readbyqxmd.com/read/28809824/creation-and-transplantation-of-an-adipose-derived-stem-cell-asc-sheet-in-a-diabetic-wound-healing-model
#1
Yuka Kato, Takanori Iwata, Kaoru Washio, Toshiyuki Yoshida, Hozue Kuroda, Shunichi Morikawa, Mariko Hamada, Kazuki Ikura, Nobuyuki Kaibuchi, Masayuki Yamato, Teruo Okano, Yasuko Uchigata
Artificial skin has achieved considerable therapeutic results in clinical practice. However, artificial skin treatments for wounds in diabetic patients with impeded blood flow or with large wounds might be prolonged. Cell-based therapies have appeared as a new technique for the treatment of diabetic ulcers, and cell-sheet engineering has improved the efficacy of cell transplantation. A number of reports have suggested that adipose-derived stem cells (ASCs), a type of mesenchymal stromal cell (MSC), exhibit therapeutic potential due to their relative abundance in adipose tissue and their accessibility for collection when compared to MSCs from other tissues...
August 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28808811/construction-and-biocompatibility-of-a-thin-type-i-ii-collagen-composite-scaffold
#2
Long Han, Zhong-Wen Zhang, Bo-He Wang, Zhen-Kun Wen
Articular cartilage injury is a common type of damage observed in clinical practice. A matrix-induced autologous chondrocyte implant was developed to repair articular cartilage as an advancement on the autologous chondrocyte implant procedure. Here, we establish a thin double layer of collagen as a novel and effective bioscaffold for the regeneration of cartilaginous lesions. We created a collagen membrane with double layers using a cover slip, a cover slip, and the collagen was then freeze-dried under vacuum...
August 14, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28807691/size-optimization-and-in-vitro-biocompatibility-studies-of-chitosan-nanoparticles
#3
Thandapani Gomathi, P Supriya Prasad, P N Sudha, Sukumaran Anil
Chitosan (CS), an amino polysaccharide has fascinating scientific applications due to its many flexible properties. The advantages of Chitosan tend to increase when it was modified. Thus, in the present research work, to improve the properties of chitosan, it was converted into chitosan nanoparticles (CS-NPs) through the ionic gelation method using sodium tripoyphosphate (TPP) and sodium hexametaphosphate (SHMP) as a crosslinker. The size optimization was done by varying the parameters such as crosslinker concentration, agitation method and rate, agitation time, temperature and drying method...
August 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28806067/immunosensor-employing-stable-solid-1-amino-2-naphthyl-phosphate-and-ammonia-borane-toward-ultrasensitive-and-simple-point-of-care-testing
#4
Jeongwook Seo, Hyeri Ha, Seonhwa Park, Al-Monsur Jiaul Haque, Sinyoung Kim, Jung Min Joo, Haesik Yang
Biosensors for ultrasensitive point-of-care testing require dried reagents with long-term stability and a high signal-to-background ratio. Although ortho-substituted diaromatic dihydroxy and aminohydroxy compounds undergo fast redox reactions, they are not used as electrochemical signaling species because they are readily oxidized and polymerized by dissolved oxygen. In this report, stable, solid 1-amino-2-naphthyl phosphate (1A2N-P) and ammonia-borane (H3N-BH3) are respectively employed as a substrate for alkaline phosphatase (ALP) and a reductant for electrochemical-chemical (EC) redox cycling...
August 14, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28803246/biofunctional-ionic-doped-calcium-phosphates-silk-fibroin-composites-for-bone-tissue-engineering-scaffolding
#5
S Pina, R F Canadas, G Jiménez, M Perán, J A Marchal, R L Reis, J M Oliveira
The treatment and regeneration of bone defects caused by traumatism or diseases have not been completely addressed by current therapies. Lately, advanced tools and technologies have been successfully developed for bone tissue regeneration. Functional scaffolding materials such as biopolymers and bioresorbable fillers have gained particular attention, owing to their ability to promote cell adhesion, proliferation, and extracellular matrix production, which promote new bone growth. Here, we present novel biofunctional scaffolds for bone regeneration composed of silk fibroin (SF) and β-tricalcium phosphate (β-TCP) and incorporating Sr, Zn, and Mn, which were successfully developed using salt-leaching followed by a freeze-drying technique...
August 12, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28802849/silk-fibroin-chitosan-scaffold-with-tunable-properties-and-low-inflammatory-response-assists-the-differentiation-of-bone-marrow-mesenchymal-stem-cells
#6
Da-Wei Li, Xiaohua Lei, Feng-Li He, Jin He, Ya-Li Liu, Ya-Jing Ye, Xudong Deng, Enkui Duan, Da-Chuan Yin
The physical and chemical properties of the scaffold are known to play important roles in three-dimensional (3D) cell culture, which always determine the cellular fate or the results of implantation. To control these properties becomes necessary for meeting the requirements of a variety of tissue engineering applications. In this study, a series of silk fibroin/chitosan (SF/CS) scaffolds with tunable properties were prepared using freeze-drying method, and the rat bone marrow-derived mesenchymal stem cells (BM-MSCs) were seeded in these scaffolds to evaluate their availability of use in tissue engineering...
August 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28770304/effects-of-concentration-of-corn-distillers-dried-grains-with-solubles-and-enzyme-supplementation-on-cecal-microbiota-and-performance-in-broiler-chickens
#7
Alaeldein M Abudabos, Raed M Al-Atiyat, Hamad A Albatshan, Rafat Aljassim, Mashael R Aljumaah, Manal M Alkhulaifi, Dragana M Stanley
With the increasing production of ethanol for biofuels, a by-product of corn-based ethanol fermentation, dried distillers grains with solubles (DDGS) is finding its way into the feed of agricultural animals including cattle, pigs, poultry, sheep, goats, aquaculture species and horses. Corn DDGS contains very high levels of non-starch polysaccharides and could be considered a good source of fibre. Despite knowledge of the role of the fibre in modulating intestinal microbiota and consequently influencing health, there is currently little information on the interactions between DDGS and intestinal microbiota...
August 3, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28770261/synthesis-and-organogelating-behaviour-of-amino-acid-functionalised-triphenylenes
#8
Jonathan E Meegan, Xiaofei Yang, Ratana Rungsirisakun, Sebastian C Cosgrove, Richard J Bushby, Amin Sadeghpour, Michael Rappolt, Rik Brydson, Richard J Ansell
Four novel amino acid-functionalised triphenylenes have been prepared with glycine, l-alanine, l-phenylalanine and l-tryptophan ethyl ester side-chains. The glycine derivative is a good gelator of chloroform, the alanine derivative gels ethanol and toluene, and the phenylalanine derivative gels benzene and toluene. The tryptophan derivative does not gel any of the solvents tested, most probably due to its more bulky structure, but forms microspheres by evaporation-induced self-assembly. The self-assembly properties of the π-gelators have been investigated using infrared, UV-absorption and fluorescence spectroscopy, concentration- and temperature-dependent NMR, and X-ray scattering experiments on dried xerogel as well as the wet organogel...
August 3, 2017: Soft Matter
https://www.readbyqxmd.com/read/28763295/contamination-of-dried-blood-spots-an-underestimated-risk-in-newborn-screening
#9
Theresa Winter, Anja Lange, Anke Hannemann, Matthias Nauck, Cornelia Müller
BACKGROUND: Newborn screening (NBS) is an established screening procedure in many countries worldwide, aiming at the early detection of inborn errors of metabolism. For decades, dried blood spots have been the standard specimen for NBS. The procedure of blood collection is well described and standardized and includes many critical pre-analytical steps. We examined the impact of contamination of some anticipated common substances on NBS results obtained from dry spot samples. This possible pre-analytical source of uncertainty has been poorly examined in the past...
August 1, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28762843/cost-effectiveness-of-3-month-paliperidone-therapy-for-chronic-schizophrenia-in-the-netherlands
#10
Thomas R Einarson, Basil G Bereza, Fadi Tedouri, Kristel Van Impe, Tom R Denee, Pieter J T Dries
BACKGROUND: A new depot formulation of paliperidone has been developed that provides effective treatment for schizophrenia for three months (PP3M). It has been tested in phase-3 trials, but no data on its cost-effectiveness have been published. PURPOSE: To determine the cost-effectiveness of PP3M compared with once-monthly paliperidone (PP1M), haloperidol long-acting therapy (HAL-LAT), risperidone microspheres (RIS-LAT), and oral olanzapine (oral-OLZ) for treating chronic schizophrenia in The Netherlands...
August 1, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28761496/antioxidant-properties-of-crude-extract-partition-extract-and-fermented-medium-of-dendrobium-sabin-flower
#11
Farahziela Abu, Che Norma Mat Taib, Mohamad Aris Mohd Moklas, Sobri Mohd Akhir
Antioxidant properties of crude extract, partition extract, and fermented medium from Dendrobium sabin (DS) flower were investigated. The oven-dried DS flower was extracted using 100% methanol (w/v), 100% ethanol (w/v), and 100% water (w/v). The 100% methanolic crude extract showed the highest total phenolic content (40.33 ± mg GAE/g extract) and the best antioxidant properties as shown by DPPH, ABTS, and FRAP assays. A correlation relationship between antioxidant activity and total phenolic content showed that phenolic compounds were the dominant antioxidant components in this flower extract...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28757775/an-anatomical-study-of-the-proximal-aspect-of-the-medial-femoral-condyle-to-define-the-proximal-distal-condylar-length
#12
Chia-Ming Chang, Wen-Tien Wu, Kuan-Lin Liu, Kuang-Ting Yeh, Cheng-Huan Peng, Ing-Ho Chen
OBJECTIVE: Despite its possible role in knee arthroplasty, the proximal-distal condylar length (PDCL) of the femur has never been reported in the literature. We conducted an anatomic study of the proximal aspect of the medial femoral condyle to propose a method for measuring the PDCL. MATERIALS AND METHODS: Inspection of dried bone specimens was carried out to assure the most proximal condylar margin (MPCM) as the eligible starting point to measure the PDCL. Simulation surgery was performed on seven pairs of cadaveric knees to verify the clinical application of measuring the PDCL after locating the MPCM...
April 2017: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/28755077/processing-of-calamine-with-modern-analytical-techniques-processed-with-huanglian-decoction-and-sanhuang-decoction
#13
Xiang-Long Meng, Jun-Nan Ma, Xiao-Hui Guo, Bing-Chen Liu, Nan-Nan Cui, Kun Li, Shuo-Sheng Zhang
OBJECTIVE: To determine the pyrolysis characteristics of calcined and processed calamine, qualitatively and quantitatively compare the contents of related elements, morphology and functional groups of the pyrolysis products dried at different heating temperatures and explore the critical temperature and the optimal drying temperature for the process of calamine with Huanglian Decoction (HLD, ) and San Huang Decoction (SHD, ). METHODS: Pyrolysis products were prepared by programmable and constantly heating the calcined and processed calamine to or at different heating temperatures...
July 28, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28740359/a-new-lens-for-observing-fundus-with-a-noncontact-wide-angle-viewing-system
#14
Mihori Kita, Yukiko Fujii, Sachiyo Hama
Drying of the cornea during surgery, which causes poor visibility of the fundus, is one of the most serious problems when using a noncontact-type wide-angle viewing system. This study used a newly commercialized lens for observing the fundus with a noncontact wide-angle viewing system. The lens used has a very thin meniscus made of polymethyl methacrylate and a large outer diameter. Following the application of viscoelastic material, the lens can be put on the cornea without using a contact lens fixation ring...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28737080/sbr-treatment-of-tank-truck-cleaning-wastewater-sludge-characteristics-chemical-and-ecotoxicological-effluent-quality
#15
Michel Caluwé, Thomas Dobbeleers, Dominique Daens, Luc Geuens, Ronny Blust, Jan Dries
A lab scale activated sludge sequencing batch reactor (SBR) was used to treat tank truck cleaning (TTC) wastewater with different operational strategies (identified as different stages). The first stage was an adaptation period for the seed sludge that originated from a continuous fed industrial plant treating TTC wastewater. The first stage was followed by a dynamic reactor operation based on the oxygen uptake rate (OUR). Thirdly, dynamic SBR control based on OUR treated a daily changing influent. Lastly, the reactor was operated with a gradually shortened fixed cycle...
July 24, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28734600/tracking-amazonian-cheese-microbial-diversity-development-of-an-original-sustainable-and-robust-starter-by-freeze-drying-spray-drying
#16
A A Ferreira, S Huang, Í T Perrone, P Schuck, G Jan, A F Carvalho
Marajó cheese made with raw buffalo milk in the Amazon region of Brazil can be considered a good source of wild lactic acid bacteria strains with unexplored and promising characteristics. The aim of this study was to develop a potential probiotic starter culture for industrial applications using freeze drying and spray drying. A decrease in the survival rates of freeze-dried samples compared with spray-dried samples was noted. The spray-dried cultures remained approximately 10(9) cfu·g(-1), whereas the freeze-dried samples showed 10(7) cfu·g(-1) after 60 d of storage at 4°C...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28734567/effect-of-calcium-phosphate-nanocomposite-on-in-vitro-remineralization-of-human-dentin-lesions
#17
Michael D Weir, Jianping Ruan, Ning Zhang, Laurence C Chow, Ke Zhang, Xiaofeng Chang, Yuxing Bai, Hockin H K Xu
OBJECTIVE: Secondary caries is a primary reason for dental restoration failures. The objective of this study was to investigate the remineralization of human dentin lesions in vitro via restorations using nanocomposites containing nanoparticles of amorphous calcium phosphate (NACP) or NACP and tetracalcium phosphate (TTCP) for the first time. METHODS: NACP was synthesized by a spray-drying technique and incorporated into a resin consisting of ethoxylated bisphenol A dimethacrylate (EBPADMA) and pyromellitic glycerol dimethacrylate (PMGDM)...
July 19, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28732899/in-situ-reduction-of-silver-nanoparticles-by-chitosan-l-glutamic-acid-hyaluronic-acid-enhancing-antimicrobial-and-wound-healing-activity
#18
Bitao Lu, Fei Lu, Yini Zou, Jiawei Liu, Bao Rong, Zhiquan Li, Fangying Dai, Dayang Wu, Guangqian Lan
Spongy composites with silver nanoparticles (AgNPs) were synthesized by freeze-drying a mixture of silver nitrate (AgNO3) and chitosan-l-glutamic acid (CG) derivative loaded with hyaluronic acid (HA) solution. CG/AgNP spongy composites had an interconnected porous structure and rough surfaces. When AgNPs (5-20nm) were immobilized on these spongy composites, AgNP aggregation was dependent on AgNO3 concentration. The spongy composites exhibited good mechanical properties, swelling, and water retention capacity...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28732884/environmental-friendly-and-magnetic-silanized-ethyl-cellulose-sponges-as-effective-and-recyclable-oil-absorption-materials
#19
Yeqiang Lu, Yue Wang, Lejing Liu, Weizhong Yuan
Ethyl cellulose (EC), owing to its wide availability, environmental-friendliness, and intrinsic hydrophobicity/oleophilicity, was used as an absorbent material for the first time. The superhydrophobic magnetic EC sponges with low density and high porosity were facilely prepared via freeze-drying method. The superhydrophobicity and magnetism of the sponges were achieved by silanization EC with hexadecyltrimethoxysilane and mixing with ferroferric oxide (Fe3O4) nanoparticles. The as-prepared magnetic silanized EC (MSEC) sponges showed stable superhydrophobicity (θwater>150°, rolling contact angle: 7°) in several kinds of solutions...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28732554/microbial-ecology-and-process-technology-of-sourdough-fermentation
#20
Luc De Vuyst, Simon Van Kerrebroeck, Frédéric Leroy
From a microbiological perspective, sourdough is to be considered as a specific and stressful ecosystem, harboring yeasts and lactic acid bacteria (LAB), that is used for the production of baked goods. With respect to the metabolic impact of the sourdough microbiota, acidification (LAB), flavor formation (LAB and yeasts), and leavening (yeasts and heterofermentative LAB species) are most noticeable. Three distinct types of sourdough fermentation processes can be discerned based on the inocula applied, namely backslopped ones (type 1), those initiated with starter cultures (type 2), and those initiated with a starter culture followed by backslopping (type 3)...
2017: Advances in Applied Microbiology
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