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https://www.readbyqxmd.com/read/29790384/is-gestational-diabetes-mellitus-in-obese-women-predicted-by-oxidative-damage-in-red-blood-cells
#1
Guadalupe León-Reyes, Alberto Martín Guzmán-Grenfell, Rafael Medina-Navarro, Araceli Montoya-Estrada, Mario Adán Moreno-Eutimio, Silvia Fuentes-García, Otilia Perichart Perera, Cinthya Muñoz-Manrique, Salvador Espino Y Sosa, Juan José Hicks G, Yessica Dorin Torres-Ramos
Obesity in pregnant women has been associated with an increased risk of maternal complications, including gestational diabetes mellitus (GDM), a process that is related to oxidative stress (OS). To evaluate the biomarkers of OS in red blood cells (RBCs), we assigned 80 pregnant women to one of three groups: control (n = 28), overweight (n = 26) and obese (n = 26). Then, we measured in plasma, the levels of glucose, triacylglycerol (TAG), insulin, free fatty acids (FFAs), leptin and cytokines (e...
May 23, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29766716/pick-a-color-maria-adaptive-sampling-enables-the-rapid-identification-of-complex-perovskite-nanocrystal-compositions-with-defined-emission-characteristics
#2
Leonard Bezinge, Richard M Maceiczyk, Ioannis Lignos, Maksym V Kovalenko, Andrew J deMello
Recent advances in the development of hybrid organic-inorganic lead halide perovskite (LHP) nanocrystals (NCs) have demonstrated their versatility and potential application as photovoltaics and light emitters through compositional tuning of optical properties. That said, due to their compositional complexity, the targeted synthesis of mixed-cation, mixed-halide LHP NCs still represents an immense challenge for traditional batch scale chemistry. To address this limitation, we herein report the integration of a high-throughput segmented-flow microfluidic reactor and self-optimizing algorithm for the synthesis of nanocrystals with defined emission properties...
May 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29755748/molecular-dynamics-study-of-tridymite
#3
Akira Takada, Kathryn J Glaser, Robert G Bell, C Richard A Catlow
Structural changes in tridymite have been investigated by molecular dynamics simulation. Two thermal processes were carried out, one cooling from the high-temperature hexagonal structure of tridymite (HP-tridymite) and the other heating from the low-temperature monoclinic structure of tridymite (MX1-tridymite). The former process showed that HP, LHP (low-temperature hexagonal structure), OC (orthorhombic structure with C 2221 symmetry) and OP (orthorhombic structure with P 21 21 21 symmetry)-like structures appeared in sequence...
May 1, 2018: IUCrJ
https://www.readbyqxmd.com/read/29642416/microenvironment-responsive-modulations-in-the-fatty-acid-content-cell-surface-hydrophobicity-and-adhesion-of-candida-albicans-cells
#4
Asha Bhujangrao Shiradhone, Sujata S Ingle, And Gajanan B Zore
Considering the significance in survival and virulence, we have made an attempt to understand modulations in the membrane and cell wall properties of Candida albicans hyphae induced by temperature (37 °C) and neutral pH and yeast form cells grown under low hydrostatic pressure (LHP). Our results suggest that cell surface hydrophobicity (CSH) and adhesion are dynamic properties determined largely by the microenvironment rather than morphological forms, citing the significance of variation in niche specific virulence...
April 6, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29459748/genesis-challenges-and-opportunities-for-colloidal-lead-halide-perovskite-nanocrystals
#5
REVIEW
Quinten A Akkerman, Gabriele Rainò, Maksym V Kovalenko, Liberato Manna
Lead halide perovskites (LHPs) in the form of nanometre-sized colloidal crystals, or nanocrystals (NCs), have attracted the attention of diverse materials scientists due to their unique optical versatility, high photoluminescence quantum yields and facile synthesis. LHP NCs have a 'soft' and predominantly ionic lattice, and their optical and electronic properties are highly tolerant to structural defects and surface states. Therefore, they cannot be approached with the same experimental mindset and theoretical framework as conventional semiconductor NCs...
May 2018: Nature Materials
https://www.readbyqxmd.com/read/29358801/assessment-of-chemically-characterised-gaultheria-fragrantissima-wall-essential-oil-and-its-major-component-as-safe-plant-based-preservative-for-millets-against-fungal-aflatoxin-contamination-and-lipid-peroxidation-during-storage
#6
Manoj Kumar, Parismita Sarma, M S Dkhar, H Kayang, Richa Raghuwanshi, Nawal Kishore Dubey
The present study aims survey of fungi causing deterioration of millets during storage, detection of aflatoxigenic fungal strains ans assessment of chemically characterized Gaultheria fragrantissiuma Wall essential oil (EO) and its major component methyl salicylate (MS) as plant based preservative. Essential oil (EO) and its major component methyl salicylate (MS) as plant based preservative was evaluated. In this study a total of 13 fungal species along with toxigenic strain of Aspergillus flavus were isolated from the millets...
January 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29352470/a-laser-optical-method-for-predicting-adulteration-of-clover-honey
#7
Ahmed Emam El-Raie, Helmy Elsayed Hassan, Abdel-Rahman Abdel-Raouf, Shaimaa Rabea
BACKGROUND: The authenticity of honey is of great importance for commercial and health reasons, because adulteration of bee honey with cheaper sweetening materials is sometimes carried out for financial gain. The objectives of this study were to evaluate clover honey quality according to physicochemical characteristics, to measure light transmission through honey samples using a visible laser technique (He-Ne laser at 632.8 nm) and to predict types of adulterants of clover honey according to the transmission intensity of the laser beam through the sample...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29306856/mycophenolate-mofetil-treatment-in-a-patient-with-recurrent-lymphocytic-hypophysitis
#8
Hiroshi Sawachika, Shoko Kodama, Tomoyuki Mukai, Yoshitaka Morita
Lymphocytic hypophysitis (LHP) is a relatively rare disease characterised by lymphocytic infiltration of the pituitary gland, resulting in pituitary dysfunction. LHP is generally responsive to corticosteroid therapy, but cases with recurrence require clinicians to select second-line therapy. We report here the case of a 58-year-old patient with LHP who developed panhypopituitarism and bitemporal hemianopia. He responded to prednisolone 40 mg/day but relapsed during tapering. The prednisolone dose was increased again and mycophenolate mofetil (MMF) was added...
January 6, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29204368/beneficial-effects-of-oral-pure-caffeine-on-oxidative-stress
#9
Daniela Metro, Valeria Cernaro, Domenico Santoro, Mattia Papa, Michele Buemi, Salvatore Benvenga, Luigi Manasseri
Ingestion of coffee (which is a mixture of over 1000 hydrosoluble substances) is known to protect from type-2 diabetes mellitus and its complications, and other chronic disorders associated with increased oxidative damage in blood and tissues. This protection is generally attributed to polyphenols and melanoidins. Very few studies were conducted on the amelioration of classic blood markers of oxidative stress induced after a few days of caffeine administration, but results vary. To assess whether caffeine per se could account for antioxidant properties of coffee in the short-term, we tested the ability of pure caffeine ingestion (5 mg/kg body weight/day in two daily doses for seven consecutive days) to improve plasma levels of six biochemical indices in healthy male volunteers (n = 15)...
December 2017: Journal of Clinical & Translational Endocrinology
https://www.readbyqxmd.com/read/29199432/whey-protein-concentrate-supplementation-protects-rat-brain-against-aging-induced-oxidative-stress-and-neurodegeneration
#10
Geetika Garg, Sandeep Singh, Abhishek Kumar Singh, Syed Ibrahim Rizvi
Whey protein concentrate (WPC) is a rich source of sulfur-containing amino acids and is consumed as a functional food, incorporating a wide range of nutritional attributes. The purpose of this study is to evaluate the neuroprotective effect of WPC on rat brain during aging. Young (4 months) and old (24 months) male Wistar rats were supplemented with WPC (300 mg/kg body weight) for 28 days. Biomarkers of oxidative stress and antioxidant capacity in terms of ferric reducing antioxidant potential (FRAP), lipid hydroperoxide (LHP), total thiol (T-SH), protein carbonyl (PC), reactive oxygen species (ROS), nitric oxide (NO), and acetylcholinesterase (AChE) activity were measured in brain of control and experimental (WPC supplemented) groups...
May 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29186745/-laserhemorrhoidoplasty-with-1470-nm-diode-laser-in-the-treatment-of-second-to-fourth-degree-hemorrhoidal-disease-a-cohort-study-with-497-patients
#11
Guido Weyand, Claudia Susanne Theis, Aboubacar Nzambi Fofana, Felix Rüdiger, Thomas Gehrke
Background Laser haemorrhoidoplasty (LHP) with the 1470 nm diode laser in minimally invasive surgery for advanced haemorrhoid disease has been studied with respect to clinical variables, such as pain and complications, and intraoperative characteristics such as mucopexia, number of treated knots and energy consumed per patient. The study also included patient satisfaction, symptom relevance and cost effectiveness. Patients and Methods Between November 2010 and November 2016, 497 patients (age 55 ± 14 years) were submitted to laser haemorrhoidoplasty with a 1470 nm diode laser in the centre for minimally invasive proctology in Siegen District Hospital...
November 29, 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/29158180/effect-of-left-lateral-tilt-down-position-on-cecal-intubation-time-a-2-center-pragmatic-randomized-controlled-trial
#12
Sheng-Bing Zhao, Xia Yang, Jun Fang, Shu-Ling Wang, Lun Gu, Tian Xia, Xiao-Ju Su, Dong Wang, Zhao-Shen Li, Yu Bai
BACKGROUND AND AIMS: Colonoscopy insertion is technically challenging, time-consuming, and painful, especially for the sigmoid. Several pilot studies indicated that the (left) tilt-down position could facilitate the insertion procedure, but no formal trials have been published to demonstrate its efficacy. We performed this study to verify the benefits of the left lateral tilt-down position (LTDP) on the insertion process. METHODS: This 2-center prospective trial randomized unsedated patients to the LTDP or left lateral horizontal position (LHP) to aid insertion...
March 2018: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29138683/the-evaluation-of-oxidative-stress-parameters-in-serum-patients-with-relapsing-remitting-multiple-sclerosis-treated-with-ii-line-immunomodulatory-therapy
#13
Bożena Adamczyk, Sławomir Wawrzyniak, Sławomir Kasperczyk, Monika Adamczyk-Sowa
Objectives: The assessment of oxidative stress (OS) in serum relapsing-remitting multiple sclerosis patients treated with II-line immunomodulatory therapy (fingolimod, natalizumab) compared to newly diagnosed patients (de novo group) treated with interferon (IFN) beta and controls. The relationship between OS parameters and gender, age, disease duration, Expanded Disability Status Scale, annualized relapse rate, MRI lesions in patients treated with II-line. Materials and Methods: One hundred and twenty-one patients with RRMS were enrolled in the study...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29126800/nanoencapsulated-illicium-verum-hook-f-essential-oil-as-an-effective-novel-plant-based-preservative-against-aflatoxin-b-1-production-and-free-radical-generation
#14
Abhishek Kumar Dwivedy, Vipin Kumar Singh, Bhanu Prakash, Nawal Kishore Dubey
The study reports efficacy of Illicium verum essential oil (IvEO) against food borne moudls and its nanoencapsulation for enhancing antifungal and antiaflatoxigenic potency. Chemical characterization of the IvEO showed anethole (89.12%) as major compound followed by estragole (4.859%). The IvEO showed broad fungitoxic spectrum against common food borne moulds. It's minimum inhibitory concentration (MIC) and minimum aflatoxin B1 inhibitory concentration (MAIC) against aflatoxigenic strain Aspergillus flavus LHP-PV-1 were 0...
January 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29123061/properties-and-potential-optoelectronic-applications-of-lead-halide-perovskite-nanocrystals
#15
REVIEW
Maksym V Kovalenko, Loredana Protesescu, Maryna I Bodnarchuk
Semiconducting lead halide perovskites (LHPs) have not only become prominent thin-film absorber materials in photovoltaics but have also proven to be disruptive in the field of colloidal semiconductor nanocrystals (NCs). The most important feature of LHP NCs is their so-called defect-tolerance-the apparently benign nature of structural defects, highly abundant in these compounds, with respect to optical and electronic properties. Here, we review the important differences that exist in the chemistry and physics of LHP NCs as compared with more conventional, tetrahedrally bonded, elemental, and binary semiconductor NCs (such as silicon, germanium, cadmium selenide, gallium arsenide, and indium phosphide)...
November 10, 2017: Science
https://www.readbyqxmd.com/read/29111750/self-catalyzed-vapor-liquid-solid-growth-of-lead-halide-nanowires-and-conversion-to-hybrid-perovskites
#16
Jonathan K Meyers, Seokhyoung Kim, David J Hill, Emma E M Cating, Lenzi J Williams, Amar S Kumbhar, James R McBride, John M Papanikolas, James F Cahoon
Lead halide perovskites (LHPs) have shown remarkable promise for use in photovoltaics, photodetectors, light-emitting diodes, and lasers. Although solution-processed polycrystalline films are the most widely studied morphology, LHP nanowires (NWs) grown by vapor-phase processes offer the potential for precise control over crystallinity, phase, composition, and morphology. Here, we report the first demonstration of self-catalyzed vapor-liquid-solid (VLS) growth of lead halide (PbX2; X = Cl, Br, or I) NWs and conversion to LHP...
November 13, 2017: Nano Letters
https://www.readbyqxmd.com/read/28933656/induction-of-rnai-responses-by-short-left-handed-hairpin-rnai-triggers
#17
Jonathan C Hagopian, Alexander S Hamil, Arjen van den Berg, Bryan R Meade, Akiko Eguchi, Caroline Palm-Apergi, Steven F Dowdy
Small double-stranded, left-handed hairpin (LHP) RNAs containing a 5'-guide-loop-passenger-3' structure induce RNAi responses by a poorly understood mechanism. To explore LHPs, we synthesized fully 2'-modified LHP RNAs targeting multiple genes and found all to induce robust RNAi responses. Deletion of the loop and nucleotides at the 5'-end of the equivalent passenger strand resulted in a smaller LHP that still induced strong RNAi responses. Surprisingly, progressive deletion of up to 10 nucleotides from the 3'-end of the guide strand resulted in a 32mer LHP capable of inducing robust RNAi responses...
October 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28748737/emergency-hartmann-s-procedure-and-its-reversal-a-totally-laparoscopic-2-step-surgery-for-the-treatment-of-hinchey-iii-and-iv-diverticulitis
#18
Diletta Cassini, Michelangelo Miccini, Farshad Manoochehri, Matteo Gregori, Gianandrea Baldazzi
BACKGROUND: Hartmann's procedure (HP) followed by reversal restoration is the first choice for treatment of diffuse diverticular peritonitis. There is no unanimous consensus regarding the use of laparoscopy to treat the same condition. METHODS: Data from 60 patients with diverticular diffuse peritonitis who underwent urgent HP followed by laparoscopic reversal were retrospectively analyzed. Patients were divided into 2 groups according to the open or laparoscopic HP (OHP, 24 patients; LHP, 36 patients)...
July 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28657723/high-tolerance-to-iron-contamination-in-lead-halide-perovskite-solar-cells
#19
Jeremy R Poindexter, Robert L Z Hoye, Lea Nienhaus, Rachel C Kurchin, Ashley E Morishige, Erin E Looney, Anna Osherov, Juan-Pablo Correa-Baena, Barry Lai, Vladimir Bulović, Vladan Stevanović, Moungi G Bawendi, Tonio Buonassisi
The relationship between charge-carrier lifetime and the tolerance of lead halide perovskite (LHP) solar cells to intrinsic point defects has drawn much attention by helping to explain rapid improvements in device efficiencies. However, little is known about how charge-carrier lifetime and solar cell performance in LHPs are affected by extrinsic defects (i.e., impurities), including those that are common in manufacturing environments and known to introduce deep levels in other semiconductors. Here, we evaluate the tolerance of LHP solar cells to iron introduced via intentional contamination of the feedstock and examine the root causes of the resulting efficiency losses...
July 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28606708/hurwitz-stability-analysis-of-fractional-order-lti-systems-according-to-principal-characteristic-equations
#20
Baris Baykant Alagoz
With power mapping (conformal mapping), stability analyses of fractional order linear time invariant (LTI) systems are carried out by consideration of the root locus of expanded degree integer order polynomials in the principal Riemann sheet. However, it is essential to show the left half plane (LHP) stability analysis of fractional order characteristic polynomials in the s plane in order to close the gap emerging in stability analyses of fractional order and integer order systems. In this study, after briefly discussing the relation between the characteristic root orientations and the system stability, the author presents a methodology to establish principal characteristic polynomials to perform the LHP stability analysis of fractional order systems...
September 2017: ISA Transactions
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