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https://www.readbyqxmd.com/read/28922405/assessment-on-induced-genetic-variability-and-divergence-in-the-mutagenized-lentil-populations-of-microsperma-and-macrosperma-cultivars-developed-using-physical-and-chemical-mutagenesis
#1
Rafiul Amin Laskar, Samiullah Khan
Induced mutagenesis was employed to create genetic variation in the lentil cultivars for yield improvement. The assessments were made on genetic variability, character association, and genetic divergence among the twelve mutagenized populations and one parent population of each of the two lentil cultivars, developed by single and combination treatments with gamma rays and hydrazine hydrates. Analysis of variance revealed significant inter-population differences for the observed quantitative phenotypic traits...
2017: PloS One
https://www.readbyqxmd.com/read/28921830/trends-application-and-future-prospectives-of-microbial-carbonic-anhydrase-mediated-carbonation-process-for-ccus
#2
REVIEW
Chintan Bhagat, Pravin Dudhagara, Shantilal Tank
Growing industrialisation and desire for better economy of countries accelerated the emission of greenhouse gasses, more than the buffering capacity of earth atmosphere. Among, various Green House Gasses (GHGs), CO2 occupies the first position in anthroposphere and has detrimental effects on the ecosystem. For decarbonization, several non-biological methods of carbon capture, utilisation, and storage (CCUS) are in use from last few decades, but they are suffering from narrow applicability. Recently, CO2 emission and its disposal related problem encourage for implementation of bioprocessing to achieve zero waste economy for a sustainable environment...
September 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28921497/quantitative-analysis-of-nucleic-acid-stability-with-ligands-under-high-pressure-to-design-novel-drugs-targeting-g-quadruplexes
#3
Shuntaro Takahashi, Naoki Sugimoto
Nucleic acids (DNA and RNA) can form various non-canonical structures. Because some serious diseases are caused by the conformational change of G-quadruplex DNA structures, the development of ligands that bind and stabilize G-quadruplex DNA is of interest to the field of nucleic acid chemistry. Volumetric changes (ΔV) in the biomolecular reaction include the structural change of biomolecules and hydration behaviors, which provide information about the tertiary interaction between G-quadruplex DNA and ligands...
September 18, 2017: Current Protocols in Nucleic Acid Chemistry
https://www.readbyqxmd.com/read/28920435/molecular-packing-hydrogen-bonding-and-fast-dynamics-in-lysozyme-trehalose-glycerol-and-trehalose-glycerol-glasses-at-low-hydration
#4
Adrien Lerbret, Frédéric Affouard
Water and glycerol are well-known to facilitate the structural relaxation of amorphous protein matrices. However, several studies evidenced that they may also limit fast (~ pico-nanosecond, ps-ns) and small-amplitude (~ Å) motions of proteins, which govern their stability in freeze-dried sugar mixtures. To determine how they interact with proteins and sugars in glassy matrices and, thereby, modulate their fast dynamics, we performed molecular dynamics (MD) simulations of lysozyme/trehalose/glycerol (LTG) and trehalose/glycerol (TG) mixtures at low glycerol and water concentrations...
September 18, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28919638/direct-measurements-of-3d-structure-chemistry-and-mass-density-during-the-induction-period-of-c3s-hydration
#5
Qinang Hu, Mohammed Aboustait, Taehwan Kim, M Tyler Ley, Jeffrey W Bullard, George Scherer, Jay C Hanan, Volker Rose, Robert Winarski, Jeffrey Gelb
The reasons for the start and end of the induction period of cement hydration remain topic of controversy. One long-standing hypothesis is that a thin metastable hydrate forming on the surface of cement grains significantly reduces the particle dissolution rate; the eventual disappearance of this layer re-establishes higher dissolution rates at the beginning of the acceleration period. However, the importance, or even the existence, of this metastable layer has been questioned because it cannot be directly detected in most experiments...
November 2016: Cem Concr Res
https://www.readbyqxmd.com/read/28919527/protective-effect-of-porcine-plasma-protein-hydrolysates-on-the-gelation-of-porcine-myofibrillar-protein-exposed-to-a-hydroxyl-radical-generating-system
#6
Haili Niu, Yichun Chen, Huan Zhang, Baohua Kong, Qian Liu
This study investigated the effect of different concentrations of porcine plasma protein hydrolysates (PPPH) on the gelation of porcine myofibrillar protein (MP) exposed to a hydroxyl radical-generating system (HRGS). Compared to non-oxidized MP, the oxidative modification led to a decreased penetration force and water holding capacity (WHC) (P<0.05). Meanwhile, addition of PPPH (1.5mg/mL) reduced the loss of MP gel strength and WHC induced by HRGS (P<0.05). Low-field nuclear magnetic resonance results suggested that the addition of PPPH facilitated the hydration of the protein...
September 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28919336/staphylococcus-aureus-dry-surface-biofilms-are-more-resistant-to-heat-treatment-than-traditional-hydrated-biofilms
#7
A Almatroudi, S Tahir, H Hu, D Chowdhury, I B Gosbell, S O Jensen, G S Whiteley, A K Deva, T Glasbey, K Vickery
BACKGROUND: The importance of biofilms to clinical practice is being increasingly realised. Biofilm tolerance to antibiotics is well described but limited work has been conducted on the efficacy of heat disinfection and sterilization against biofilms. AIM: To test the susceptibility of planktonic, hydrated biofilm and dry-surface biofilm forms of Staphylococcus aureus, to dry heat and wet heat treatments. METHODS: S. aureus was grown as both hydrated biofilm and dry-surface biofilm in the CDC biofilm generator...
September 14, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28918620/conservative-management-of-colonoscopic-perforation-a-case-report
#8
Hossein Parsa, Arash Miroliaee, Zafar Doagoo, Saeed Sina
Colonoscopy is widely used for the diagnosis, treatment and a follow up of colorectal diseases. Perforation of the large bowel during elective colonoscopy is rare but serious life threatening complication. We report a 51-year-old woman who experienced recto sigmoid perforation during diagnostic colonoscopy. During 8 days of total hospitalization, she spent 3 days in ICU with gastrointestinal rest. The patient was hydrated and took intravenous antibiotics. In take-output and temperature were closely monitored...
July 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28917888/structure-of-cellulose-microfibrils-in-mature-cotton-fibres
#9
Marta Martínez-Sanz, Filomena Pettolino, Bernadine Flanagan, Michael J Gidley, Elliot P Gilbert
The structure of cellulose microfibrils in mature cotton fibres from three varieties - Gossypium hirsutum, G. barbadense and G. arboreum - has been investigated by a multi-technique approach combining small angle scattering techniques with spectroscopy and diffraction. Cellulose microfibrils present a Iβ-rich crystalline structure with limited surface disorder. Small angle scattering (SAXS and SANS) data have been successfully fitted using a core-shell model and the results obtained indicate that the cellulose microfibrils, formed by the association of 2-3 elementary fibrils, are composed of a ca...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917750/portable-near-infrared-spectroscopy-applied-to-fuel-quality-control
#10
Radigya M Correia, Eloilson Domingos, Vagne M Cáo, Brenda R F Araujo, Sthefany Sena, Layla U Pinheiro, André M Fontes, Luiz Felipe M Aquino, Ernesto C Ferreira, Paulo R Filgueiras, Wanderson Romão
Fuel quality control has gained interest in many countries owing to the potential damage of low-quality fuel to engines, the environment, and economy. Thus, the application of analytical techniques to verify quality control of fuels has become crucial. The portable micro-spectrometer in the near infrared region (microNIR) has gained credibility as a successful analytical technique in several quality control sectors. The possibility of real-time analysis using a nondestructive and reliable method is the main advantage of this methodology...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917733/stabilization-of-gas-phase-uranyl-complexes-enables-rapid-speciation-using-electrospray-ionization-and-ion-mobility-mass-spectrometry
#11
Austen L Davis, Brian H Clowers
Significant challenges exist when characterizing f-element complexes in solution using traditional approaches such as electrochemical and spectroscopic techniques as they do not always capture information for lower abundance species. However, provided a metal-complex with sufficient stability, soft ionization techniques such as electrospray offer a means to quantify and probe the characteristics of such systems using mass spectrometry. Unfortunately, the gas-phase species observed in ESI-MS systems do not always reflect the solution phase distributions due to the inherent electrochemical mechanism of the electrospray process, ion transfer from ambient to low pressures conditions, and other factors that are related to droplet evaporation...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28917574/-apparent-worsening-of-psoriasis-lesions-revealing-methotrexate-overdosage
#12
R Haber, B Baroudjian, M Battistella, M Bagot, A Petit
BACKGROUND: Methotrexate (MTX) is an antimetabolite drug used in the treatment of cancers and autoimmune diseases and frequently in dermatology for cutaneous and/or arthritic psoriasis. Toxicities due to MTX overdosage are mainly cutaneous, hepatic and hematologic. Herein, we report a case of MTX overdosage presenting as an erosive and an inflammatory flare of preexisting psoriatic plaques and with new palmar lesions. PATIENTS AND METHODS: A 51-year-old male with a 6-year history of plaque psoriasis resistant to topical corticosteroids was started for the first time on MTX 20mg weekly...
September 13, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28915744/communication-charge-transfer-dominates-over-proton-transfer-in-the-reaction-of-nitric-acid-with-gas-phase-hydrated-electrons
#13
Jozef Lengyel, Jakub Med, Petr Slavíček, Martin K Beyer
The reaction of HNO3 with hydrated electrons (H2O)n(-) (n = 35-65) in the gas phase was studied using Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry and ab initio molecular dynamics simulations. Kinetic analysis of the experimental data shows that OH(-)(H2O)m is formed primarily via a reaction of the hydrated electron with HNO3 inside the cluster, while proton transfer is not observed and NO3(-)(H2O)m is just a secondary product. The reaction enthalpy was determined using nanocalorimetry, revealing a quite exothermic charge transfer with -241 ± 69 kJ mol(-1)...
September 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28915442/electron-cryo-tomography-captures-macromolecular-complexes-in-native-environments
#14
REVIEW
Lindsay A Baker, Michael Grange, Kay Grünewald
Transmission electron microscopy has a long history in cellular biology. Fixed and stained samples have been used for cellular imaging for over 50 years, but suffer from sample preparation induced artifacts. Electron cryo-tomography (cryoET) instead uses frozen-hydrated samples, without chemical modification, to determine the structure of macromolecular complexes in their native environment. Recent developments in electron microscopes and associated technologies have greatly expanded our ability to visualize cellular features and determine the structures of macromolecular complexes in situ...
September 12, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28915283/clinical-evaluation-of-a-multi-modal-facial-serum-that-addresses-hyaluronic-acid-levels-in-skin
#15
Susana Raab, Margarita Yatskayer, Stephen Lynch, Megan Manco, Christian Oresajo
BACKGROUND: Hyaluronic acid (HA), the major glycosaminoglycan present in the human skin, is a key contributor to water retention and mechanical support in skin. The level, size, and functionality of cutaneous HA are known to diminish with age. Topical treatments designed to increase the HA content of skin have been met with limited success. The purpose of this study was to evaluate the tolerance and efficacy of a multi-modal facial serum containing HA, Proxylane (C-Xyloside), purple rice extract, and dipotassium glycyrrhizate in addressing HA levels in skin...
September 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28915039/a-first-principles-molecular-dynamics-study-of-the-solvation-shell-structure-vibrational-spectra-polarity-and-dynamics-around-a-nitrate-ion-in-aqueous-solution
#16
Sushma Yadav, Ashu Choudhary, Amalendu Chandra
A first-principles molecular dynamics study is presented for the structural, dynamical, vibrational, and dipolar properties of the solvation shell of a nitrate ion in deuterated water. A detailed description of the anisotropic structure of the solvation shell is presented through calculations of various structural distributions in different conical shells around the perpendicular axis of the ion. The nitrate ion-water dimer potential energies are also calculated for many different orientations of water. The average vibrational stretch frequency of OD modes in the solvation shell is found to be higher than that of other OD modes in the bulk, which signifies a weakening of hydrogen bonds in the hydration shell...
September 15, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28914679/reliability-of-a-skin-diagnostic-device-in-assessing-hydration-and-erythema
#17
Koh Huimin, Alexandra M Rowledge, Caroline J Borzdynski, Charne Miller, Nicoletta Frescos, Gayle McKenzie, Elizabeth Perry, William McGuiness
OBJECTIVE: To examine the reliability of a skin diagnostic device, the SD202 (Courage+Khazaka GmBH, Cologne, Germany), in assessing hydration and erythema of periwound skin and pressure injury-prone areas. DESIGN: Intrarater reliabilities from 3 cross-sectional and prospective studies are reported. SETTING AND PARTICIPANTS: Patients attending an outpatient, nurse-led wound dressing clinic (n = 16), a podiatrist-led high-risk foot clinic (n = 17), and residents (n = 38) at a single residential aged-care facility...
October 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28914313/cohesiveness-and-flowability-of-particulated-solid-and-semi-solid-food-systems
#18
Aarti B Tobin, Peggy Heunemann, Judith Wemmer, Jason R Stokes, Timothy Nicholson, Erich J Windhab, Peter Fischer
Cohesiveness and flowability of particulated food systems is of particular interest in the oral processing and swallowing of food products, especially for people suffering from dysphagia. Although cohesiveness of a bolus is an essential parameter in swallowing, a robust technique for objective measurement of cohesiveness of particulated semi- or soft-solids is still lacking. In our approach the ring shear tester is used to measure the cohesiveness and flowability of a model particulated food system based on fresh green pea powders and pastes with controlled moisture content...
September 15, 2017: Food & Function
https://www.readbyqxmd.com/read/28914307/revealing-the-distinct-thermal-transition-behavior-between-pega-based-linear-polymers-and-their-disulfide-cross-linked-nanogels
#19
Wenhui Sun, Zesheng An, Peiyi Wu
The distinct thermal transition behavior of thermoresponsive block polymers based on poly(ethylene glycol)methyl ether acrylate (PEGA) and their corresponding disulfide-cross-linked nanogels was studied by using FTIR measurements in combination with two-dimensional correlation spectroscopy (2Dcos). Spectral analysis clearly reveals that the sharp thermal transition of the precursor polymer is accompanied by a forced hydration process induced by the formation of hydrogen bonds between the entrapped water molecules and the C[double bond, length as m-dash]O groups, while the nanogel with a relatively continuous thermal transition is related to the existence of various dehydrating states of the C[double bond, length as m-dash]O groups...
September 15, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28914202/statins-and-contrast-induced-nephropathy-a-systematic-review-and-meta-analysis
#20
Alexandros Briasoulis, Mohan Pala, Tesfaye Telila, Obsinet Merid, Emmanuel Akintoye, Georgia Vogiatzi, Evangelos Oikonomou, Dimitris Tousoulis
Contrast-induced nephropathy (CIN) is a type of acute kidney injury associated with intravascular administration of iodinated contrast, usually reversible. Contrast agents are an essential component of invasive and noninvasive coronary angiography. These agents have been modified over time to enhance patient safety and tolerability, but adverse reactions still occur. CIN has been variably defined, as a rise in serum creatinine of 0.5 mg/dl, or a 25% increase in serum creatinine above baseline within 24-72 hours after the procedure...
September 13, 2017: Current Pharmaceutical Design
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