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https://www.readbyqxmd.com/read/28821062/cell-wall-polysaccharides-from-pulp-and-peel-of-cubiu-a-pectin-rich-fruit
#1
Cristiane Colodel, Rosane Maria das Graças Bagatin, Talita Maria Tavares, Carmen Lúcia de Oliveira Petkowicz
To investigate the polysaccharides of cubiu (Solanum sessiliflorum D.) fruits, pulp and peel were subjected to sequential extractions using different solvents, giving rise to pectins heterogeneous with respect to their structural characteristics, xylan, arabinogalactoxyloglucans and glucomannans. Chemical, physicochemical and spectroscopic analyses were used to characterize the polysaccharides obtained. Pectins with uronic acid content of commercial grade were obtained from the peel of cubiu fruits using water (25°C and 100°C) and EDTA and from its pulp using water (100°C)...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821039/processes-involving-selective-precipitation-for-the-recovery-of-purified-pectins-from-mango-peel
#2
Andreas Nagel, Carina Winkler, Reinhold Carle, Hans-Ulrich Endress, Christine Rentschler, Sybille Neidhart
Three methods for the recovery of purified pectins from directly dried mango peel were developed, using selective precipitation of mango pectin in propan-2-ol (IPA) of adequate volume concentrations for purification. Yields, composition, macromolecular and gelling properties of the resultant pectins were compared. Effluent analyses proved postextractive removal of fruit exudate arabinogalactans. The recovery processes involved (A) washing of raw-pectin powder in IPA of defined volume concentration, (B) fractional alcoholic precipitation of dissolved raw pectin, or (C) selective pectin precipitation from the hot-acid extract of mango peel in adequately diluted IPA...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28819900/effect-of-polyethylene-glycol-on-the-nio-photocathode
#3
Shengjun Li, Zeng Chen, Wenping Kong, Xiyang Jia, Junhao Cai, Shaokang Dong
In this study, a uniform nanoporous NiO film, with a thickness of up to 2.6 μm, was prepared using polyethylene glycol (PEG). The addition of PEG significantly decreased the cracks in the NiO film and prevented the peeling of the NiO film from a fluorine-doped tin oxide substrate. The NiO cathode was prepared using CdSeS quantum dots (QDs) as the sensitizer, with an optimized photoelectric conversion of 0.80%. The optimized QD-sensitized NiO films were first assembled with the TiO2 anode to prepared QD-sensitized p-n-type tandem solar cells...
August 17, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28816729/retina-expansion-technique-for-macular-hole-apposition-report-2-efficacy-closure-rate-and-risks-of-a-macular-detachment-technique-to-close-large-full-thickness-macular-holes
#4
Roger Wong, Catherine Howard, Giancarlo Dellʼaversana Orobona
PURPOSE: To describe the safety and efficacy of a technique to close large thickness macular holes. METHODS: A consecutive retrospective interventional case series of 16 patients with macular holes greater than 650 microns in "aperture" diameter were included. The technique involves vitrectomy, followed by internal limiting membrane peeling. The macula is detached using subretinal injection of saline. Fluid-air exchange is performed to promote detachment and stretch of the retina...
August 14, 2017: Retina
https://www.readbyqxmd.com/read/28813557/facial-erosive-pustular-dermatosis-after-cosmetic-resurfacing
#5
Julie E Mervak, Stephanie D Gan, Emily H Smith, Frank Wang
Importance: Erosive pustular dermatosis (EPD) is a rare condition that typically affects actinically damaged skin of the scalp. Characterized by sterile pustules, erosions, and crusts, EPD is difficult to treat and heals slowly. The exact cause of EPD is unknown, although trauma is an inciting factor. Objective: To describe 3 women who presented with prolonged facial erosions after cosmetic resurfacing procedures, specifically fully ablative carbon dioxide laser or medium-depth chemical peel...
August 16, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28812425/nasunin-inhibits-the-lipopolysaccharide-induced-pro-inflammatory-mediator-production-in-raw264-mouse-macrophages-by-suppressing-ros-mediated-activation-of-pi3%C3%A2-k-akt-nf-%C3%AE%C2%BAb-and-p38-signaling-pathways
#6
Wataru Komatsu, Kazuko Itoh, Satomi Akutsu, Hisashi Kishi, Shuji Ohhira
Nasunin is a major anthocyanin in eggplant peel. The purpose of this study was to examine the anti-inflammatory effects of nasunin in lipopolysaccharide (LPS)-stimulated RAW264 macrophages and to identify the molecular mechanisms underlying these effects. We found that nasunin reduced the LPS-induced secretion of tumor necrosis factor-α, interleukin-6 and nitric oxide, and expression of inducible nitric oxide synthase in a dose-dependent manner. Nasunin diminished LPS-induced nuclear factor-κB (NF-κB) activation by suppressing the degradation of inhibitor of κB-α and nuclear translocation of p65 subunit of NF-κB...
August 16, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28812133/-watchful-waiting-as-a-therapeutic-principle-for-diseases-of-the-vitreoretinal-interface
#7
REVIEW
H Hoerauf, B Kirchhof
Elective surgery of the vitreoretinal interface is currently the most common reason for vitrectomy in Germany. The evaluation and correct interpretation of spectral domain optical coherence tomography (SD-OCT) images is of great importance but the indications for vitrectomy in macular surgery should be based more on patient symptoms and not only the OCT findings. Watchful waiting is highlighted as an alternative therapeutic option in individual patients. This article addresses a number of aspects and discrepancies between findings and patients' level of suffering based on binocular symptoms...
August 15, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28812089/large-scale-all-polycrystalline-diamond-structures-transferred-onto-flexible-parylene-c-films-for-neurotransmitter-sensing
#8
Bin Fan, Yan Zhu, Robert Rechenberg, Cory A Rusinek, Michael F Becker, Wen Li
Boron-doped diamond (BDD) has superior electrochemical properties for bioelectronic systems. However, due to its high synthesis temperature, traditional microfabrication methods have limits to integrating BDD with emerging classes of flexible, polymer-based bioelectronic systems. This paper introduces a novel fabrication solution to this challenge, which features (i) a wafer-scale substrate transfer process with all diamond structures transferred onto a flexible Parylene-C substrate and (ii) Parylene anchors introduced to strengthen the bonding between BDD and Parylene substrates, as demonstrated by a peeling test...
August 16, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28811935/pars-plana-vitrectomy-with-internal-limiting-membrane-peeling-in-traumatic-macular-hole-14-perfluoropropane-c3f8-versus-silicone-oil-tamponade
#9
Ashraf Bor'i, Mahmoud A Al-Aswad, Ahmed Abdelwahab Saad, Dina Hamada, Ashraf Mahrous
PURPOSE: To evaluate the outcome of 23 G PPV and ILM peeling with 14% C3F8 compared with silicone oil tamponade in cases of TMHs without spontaneous closure. METHODS: A retrospective comparative study included 33 eyes with TMHs; 7 eyes healed spontaneously, and the remaining 26 eyes have been treated with PPV and ILM peeling. Silicone oil was used as a tamponade for children or adults who refused to adopt face-down position (10 cases). In all other cases (16 cases), 14% C3F8 was used...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28810041/morphologic-and-postoperative-fixation-characteristics-of-the-macular-epiretinal-membrane-in-young-patients-undergoing-surgery
#10
Tian Tian, Chunli Chen, Haiying Jin, Qi Zhang, Yu Xu, Shiyuan Wang, Xiang Zhang, Peiquan Zhao
BACKGROUND AND OBJECTIVE: To describe morphologic characteristics, surgical outcomes, postoperative preferred retinal loci (PRL), and fixation stability of epiretinal membranes (ERMs) in young patients. PATIENTS AND METHODS: This retrospective study analyzed 43 eyes of 41 young patients (age range: 0.8 years to 28 years) with ERMs, which were divided into two groups: secondary ERMs (SERMs; n = 28) and idiopathic ERMs (IERMs; n = 13). All 43 eyes underwent 25-gauge vitrectomy and membrane peeling...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28809420/rapid-identification-of-%C3%AE-glucosidase-inhibitors-from-dioscorea-opposita-thunb-peel-extract-by-enzyme-functionalized-fe3o4-magnetic-nanoparticles-coupled-with-hplc-ms-ms
#11
Songsong Zhang, Dandan Wu, Huan Li, Jinhua Zhu, Weiping Hu, Minghua Lu, Xiuhua Liu
Dioscorea opposita Thunb, commonly known as "yam" that has a long dietary therapy history for diabetes, is widely consumed as a botanical dietary supplement and widely cultivated in China. In this work, a method for rapid screening of α-glucosidase inhibitors from Dioscorea opposita Thunb peel extract was developed using α-glucosidase functionalized magnetic nanoparticles (αG-MNPs) as a solid phase extraction absorbent in combination with high performance liquid chromatography-mass spectrometry (HPLC-MS)...
August 15, 2017: Food & Function
https://www.readbyqxmd.com/read/28808926/foveal-microstructure-analysis-in-eyes-with-diabetic-macular-edema-treated-with-vitrectomy
#12
Jiro Kogo, Akira Shiono, Hiroki Sasaki, Ryo Yomoda, Tatsuya Jujo, Yasushi Kitaoka, Hitoshi Takagi
INTRODUCTION: The purpose of this study was to evaluate baseline and postoperative factors affecting outcomes after vitrectomy for diabetic macular edema (DME) using optical coherence tomography (OCT). METHODS: Vitrectomy combined with inner limiting membrane (ILM) peeling and additional laser photocoagulation therapy was performed on 36 eyes of 30 DME patients. Evaluations included the logarithm of the minimal angle of resolution (logMAR), best-corrected visual acuity (BCVA) and OCT parameters at baseline and 1, 3, 6, and 12 months postoperatively...
August 14, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28807574/synthesis-and-evaluation-of-analogs-of-5-z-4-amino-2-butenyl-methylamino-5-deoxyadenosine-mdl-73811-or-abeado-an-inhibitor-of-s-adenosylmethionine-decarboxylase-with-antitrypanosomal-activity
#13
Anthony J Brockway, Oleg A Volkov, Casey C Cosner, Karen S MacMillan, Stephen A Wring, Thomas E Richardson, Michael Peel, Margaret A Phillips, Jef K De Brabander
We describe our efforts to improve the pharmacokinetic properties of a mechanism-based suicide inhibitor of the polyamine biosynthetic enzyme S-adenosylmethionine decarboxylase (AdoMetDC), essential for the survival of the eukaryotic parasite Trypanosoma brucei responsible for Human African Trypanosomiasis (HAT). The lead compound, 5'-(((Z)-4-amino-2-butenyl)methylamino)-5'-deoxyadenosine (1, also known as MDL 73811, or AbeAdo), has curative efficacy at a low dosage in a hemolymphatic model of HAT but displayed no demonstrable effect in a mouse model of the CNS stage of HAT due to poor blood-brain barrier permeation...
August 3, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28806973/protective-effects-of-orange-citrus-sinensis-l-peel-aqueous-extract-and-hesperidin-on-oxidative-stress-and-peptic-ulcer-induced-by-alcohol-in-rat
#14
Slimen Selmi, Kais Rtibi, Dhekra Grami, Hichem Sebai, Lamjed Marzouki
BACKGROUND: Massive alcohol drinking can lead to gastric ulcer. In the present study we investigated the gastroprotective effect of Citrus sinensis peel aqueous extract (CSPE) and Hesperidin (H) in ethanol (EtOH) induced oxidative stress and peptic ulcer in rats. METHODS: Seventy adult male Wistar rats were divided into seven groups of 10 each: control, EtOH (4 g/kg b.w.), EtOH + various doses of CSPE (100, 200 and 400 mg/kg, b.w.), EtOH + Hesperidin (50 mg/kg, p...
August 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28805023/onion-allium-cepa-l-peel-extract-ope-regulates-human-sperm-motility-via-protein-kinase-c-mediated-activation-of-the-human-voltage-gated-proton-channel
#15
M R Chae, S J Kang, K P Lee, B R Choi, H K Kim, J K Park, C Y Kim, S W Lee
Onion (Allium cepa L.) and quercetin protect against oxidative damage and have positive effects on multiple functional parameters of spermatozoa, including viability and motility. However, the associated underlying mechanisms of action have not yet been identified. The aim of this study was to investigate the effect of onion peel extract (OPE) on voltage-gated proton (Hv1) channels, which play a critical role in rapid proton extrusion. This process underlies a wide range of physiological processes, particularly male fertility...
August 13, 2017: Andrology
https://www.readbyqxmd.com/read/28804716/open-wedge-high-tibial-osteotomy-with-distal-tubercle-osteotomy-lessens-change-in-patellar-position
#16
Hoon Park, Hyun Woo Kim, Jin Hwa Kam, Dong Hoon Lee
The purpose of this study was to investigate the change in patellar position after open wedge high tibial osteotomy (OWHTO) with distal tubercle osteotomy (DTO), comparing outcomes of conventional OWHTO in young adults with proximal tibia varus deformity but no arthritic manifestations. Thirty-three patients (mean age, 31.8 years) subjected to OWHTO/DTO were matched with 30 patients (mean age, 33.5 years) undergoing conventional OWHTO. Patellar position, as measured in pre- and postoperative standing lateral radiographs, was compared...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28802843/co-concentration-effect-of-silane-with-natural-extract-on-biodegradable-polymeric-films-for-food-packaging
#17
Anbreen Bashir, Sehrish Jabeen, Nafisa Gull, Atif Islam, Misbah Sultan, Abdul Ghaffar, Shahzad Maqsood Khan, Sadia Sagar Iqbal, Tahir Jamil
Novel biodegradable films were prepared by blending guar gum, chitosan and poly (vinyl alcohol) having mint (ME) and grapefruit peel (GE) extracts and crosslinked with nontoxic tetraethoxysilane (TEOS). The co-concentration effect of TEOS with natural extracts on the films was studied. FTIR analysis confirmed the presence of incorporated components and the developed interactions among the polymer chains. The surface morphology of the films by SEM showed the hydrophilic character due to porous network structure...
August 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28801720/functionalized-hydrothermal-carbon-derived-from-waste-pomelo-peel-as-solid-phase-extractant-for-the-removal-of-uranyl-from-aqueous-solution
#18
Feize Li, Yu Tang, Huilin Wang, Jijun Yang, Shoujian Li, Jun Liu, Hong Tu, Jiali Liao, Yuanyou Yang, Ning Liu
To develop a high-performance solid-phase extractant for the separation of uranyl f, pomelo peel, a kind of waste biomass, has been employed as carbon source to prepare carbonaceous matrix through low-temperature hydrothermal carbonization (200 °C, 24 h). After being oxidized by Hummers method, the prepared hydrothermal carbon matrix was functionalized with carboxyl and phenolic hydroxyl groups (1.75 mmol g(-1)). The relevant characterizations and batch studies had demonstrated that the obtained carbon material possessed excellent affinity toward uranyl (436...
August 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28799792/effects-of-daily-food-processing-on-allergenicity
#19
Beatriz Cabanillas, Natalija Novak
Daily food processing has the potential to alter the allergenicity of foods due to modification of the physico-chemical properties of proteins. The degree of such modifications depends on factors such as processing conditions, type of food considered, allergenic content, etc. The impact of daily food processing like boiling, roasting, frying or baking on food allergenicity have been extensively studied. The influence of other thermal treatments such as microwave heating or pressure cooking on allergenicity has also been analyzed...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28799335/structure-and-mechanical-properties-of-polybutadiene-thin-films-bound-to-surface-modified-carbon-interface
#20
Koichiro Hori, Norifumi L Yamada, Yoshihisa Fujii, Tomomi Masui, Hiroyuki Kishimoto, Hideki Seto
The structure and mechanical properties of polybutadiene (PB) film on bare and surface-modified carbon films were examined. There was an interfacial layer of PB near the carbon layer whose density was higher (lower) than that of the bulk material on the hydrophobic (hydrophilic) carbon surface. To glean information about the structure and mechanical properties of PB at the carbon interface, a residual layer (RL) adhering on the carbon surface, which was considered to be a model of "bound rubber layer," was obtained by rinsing the PB film with toluene...
August 11, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
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