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https://www.readbyqxmd.com/read/28430345/healing-response-of-rat-pulp-treated-with-an-injectable-keratin-hydrogel
#1
Lavanya Ajay Sharma, Robert M Love, Mohammad A Ali, Ajay Sharma, Soraia Macari, Avadhoot Avadhani, George J Dias
BACKGROUND: Keratin has shown promising outcomes as a biomaterial due to its inherent bioactivity, biocompatibility and regenerative effects. The effect of keratin on repair and regeneration of dental tissues has never been studied before. Current therapies to treat pulp tissues involve its replacement with inert, synthetic materials that do not have a proper biological function, leading to failure and tooth loss. This study aimed to develop a biocompatible keratin hydrogel (KH) suitable for pulp therapies...
April 20, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28429131/the-first-comprehensive-molecular-detection-of-six-honey-bee-viruses-in-iran-in-2015-2016
#2
Mohammadreza Ghorani, Omid Madadgar, Arash Ghalyanchi Langeroudi, Mohammadreza Rezapanah, Sedigheh Nabian, Hesameddin Akbarein, Reza Kh Farahani, Hossein Maghsoudloo, Hamed Abdollahi, Mohammad Forsi
At least 18 viruses have been reported in the honey bee (Apis mellifera L.). However, severe diseases in honey bees are mainly caused by six viruses, and these are the most important in beekeeping. These viruses include: deformed wing virus (DWV), acute bee paralysis virus (ABPV), chronic bee paralysis virus (CBPV), sacbrood virus (SBV), kashmir bee virus (KBV), and black queen cell virus (BQCV). In this study, we evaluated 89 Iranian honey bee apiaries (during the period 2015-2016) suffering from symptoms of depopulation, sudden collapse, paralysis, or dark coloring, by employing reverse transcription-PCR...
April 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28428561/a-general-framework-for-predicting-delayed-responses-of-ecological-communities-to-habitat-loss
#3
Youhua Chen, Tsung-Jen Shen
Although biodiversity crisis at different spatial scales has been well recognised, the phenomena of extinction debt and immigration credit at a crossing-scale context are, at best, unclear. Based on two community patterns, regional species abundance distribution (SAD) and spatial abundance distribution (SAAD), Kitzes and Harte (2015) presented a macroecological framework for predicting post-disturbance delayed extinction patterns in the entire ecological community. In this study, we further expand this basic framework to predict diverse time-lagged effects of habitat destruction on local communities...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421784/assessment-of-anthropometric-indicators-in-children-with-cerebral-palsy-according-to-the-type-of-motor-dysfunction-and-reference-standard
#4
Jorge Abraham García Iñiguez, Edgar Manuel Vásquez-Garibay, Andrea García Contreras, Enrique Romero-Velarde, Rogelio Troyo Sanromán
AIM: The study aimed to demonstrate that the assessment of the anthropomorphic measurements of children with cerebral palsy (CP) varies according to the type of motor dysfunction and references standard used for comparison. METHOD: In a cross-sectional design, 108 children 2 to 16 years were classified according to the type of motor dysfunction by gender and age group. Weight, mid-upper-arm-circumference (MUAC), and alternative measures for height were performed...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28419332/new-model-for-mines-and-transportation-tunnels-external-dose-calculation-using-monte-carlo-simulation
#5
Kh A Allam
In this work, a new methodology is developed based on Monte Carlo simulation for tunnels and mines external dose calculation. Tunnels external dose evaluation model of a cylindrical shape of finite thickness with an entrance and with or without exit. A photon transportation model was applied for exposure dose calculations. A new software based on Monte Carlo solution was designed and programmed using Delphi programming language. The variation of external dose due to radioactive nuclei in a mine tunnel and the corresponding experimental data lies in the range 7...
April 13, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28417135/a-training-model-for-introducing-a-novel-surgical-procedure-into-clinical-practice-our-experience-on-peroral-endoscopic-myotomy-for-achalasia
#6
Dedrick Kh Chan, Reuben Km Wong, Janelle Ns Phua, Asim Shabbir, Khek Yu Ho, Philip Wy Chiu, Jimmy By So
No abstract text is available yet for this article.
March 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28415541/synthesis-characterization-of-caf2-doped-silicate-glass-ceramics
#7
Madeeha Riaz, Rehana Zia, Ambreen Mirza, Tousif Hussain, Farooq Bashir, Safia Anjum
This paper reports the fabrication and characterization of silicate glass-ceramics doped with (0-12mol%) CaF2. TGA-DSC analysis was carried out to determine the crystallization temperature and stability of glass measured by two glass parameters; Hruby parameter KH=(Tx-Tg)/(TL-Tx) and Weinberg parameter KW=(Tc-Tg)/TL. It was found that with CaF2 doping improved sinterability at low temperature and provided stability to the glass. The XRD pattern exhibits a single phase of combeite and doping of CaF2 cause increase in crystallite size...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415401/a-new-2-amino-3-pynanopyrane-3-carbonitrile-derivative-for-electrocatalytic-oxidation-and-determination-of-hydrazine
#8
Leili Shahidi, Masoumeh Taei, Seyed Hossein Banitaba, Nahid Tavakkoli
A noble glassy carbon electrode modified with Au nanoparticles and 2-amino-4-(3,4-dihydroxyphenyl)-6-(hydroxymethyl)-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile, was fabricated for electrocatalytic determination of hydrazine (AuNPs/APP/GCE). Large over-potential and interference of some species are two limitation factors for the determination of hydrazine at bare electrode. This modified electrode is able to shift a signal to the negative potential, and can amplify the oxidation current of hydrazine by 28...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28406471/real-time-vision-based-road-sign-recognition-using-an-artificial-neural-network
#9
Kh Tohidul Islam, Ram Gopal Raj
Road sign recognition is a driver support function that can be used to notify and warn the driver by showing the restrictions that may be effective on the current stretch of road. Examples for such regulations are 'traffic light ahead' or 'pedestrian crossing' indications. The present investigation targets the recognition of Malaysian road and traffic signs in real-time. Real-time video is taken by a digital camera from a moving vehicle and real world road signs are then extracted using vision-only information...
April 13, 2017: Sensors
https://www.readbyqxmd.com/read/28402468/xylem-adjustment-of-sessile-oak-at-its-southern-distribution-limits
#10
Elisabet Martínez-Sancho, Isabel Dorado-Liñán, Ingo Heinrich, Gerhard Helle, Annette Menzel
Drought is a key limiting factor for tree growth in the Mediterranean Basin. However, the variability in acclimation via xylem traits is largely unknown. We studied tree growth and vessel features of Quercus petraea (Matt.) Lieb. in five marginal stands across southern Europe. Tree-ring width (TRW), mean earlywood vessel area (MVA) and number of earlywood vessels (NV) as well as theoretical hydraulic conductivity (Kh) chronologies were developed for the period 1963-2012. Summer drought signals were consistent among TRW chronologies; however, climatic responses of vessel features differed considerably among sites...
April 10, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28394533/-current-laser-technologies-for-the-surgical-treatment-of-prostatic-hyperplasia
#11
D V Enikeev, P V Glybochko, Yu G Alyaev, L M Rapoport, A Z Vinarov, M E Enikeev, N I Sorokin, L G Spivak, R B Sukhanov, A M Dymov, O Kh Khamraev, M S Taratkin, D S Davydov, V A Vinnichenko
The first medical application of lasers dates back to the mid-60s of the XX century. Since then, laser systems have undergone significant changes. No longer a science fiction, lasers are used in many medical fields as an indispensable tool in the hands of the modern physician. The article outlines advances in laser techniques (from the idea of laser radiation to the modern laser systems used as effective surgical tools). We also present our experience in using laser surgical techniques in treating patients with prostatic hyperplasia...
April 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28394532/-phosphodiesterase-type-5-inhibitors-in-the-treatment-of-erectile-dysfunction-past-present-and-future
#12
S I Gamidov, R I Ovchinnikov, A Yu Popova, S Kh Izhbaev
This review article describes the differences in efficacy and side effects between available phosphodiesterase type 5 (PDE-5) inhibitors used for treating erectile dysfunction. The most studied PDE-5 inhibitor is sildenafil.
April 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28394517/-technical-features-of-intestinal-ureteroplasty-art-6-simultaneous-ureteral-and-bladder-substitution
#13
B K Komyakov, A I Novikov, V A Ochelenko, B G Guliev, T Kh Al-Attar, M V Onoshko
AIM: To present the results and technical features of different methods of simultaneous ileal ureteral and bladder substitution. MATERIALS AND METHODS: From 2001 to 2016, 154 patients (mean age 52+/-9.2 years) underwent ileal and appendicular ureteroplasty. Of them, 70 (45.4%) were men and 84 (54.6%) women. Among them, 49 (31.8%) patients underwent ureteroplasty concurrently with orthotopic ileocystoplasty. The Studers ileal-ureter cystoplasty and Y-shaped bladder and ureteral reconstruction were performed in 38 (77...
April 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28388202/temperature-dependence-of-magnetic-excitations-terahertz-magnons-above-the-curie-temperature
#14
H J Qin, Kh Zakeri, A Ernst, J Kirschner
When an ordered spin system of a given dimensionality undergoes a second order phase transition, the dependence of the order parameter, i.e., magnetization on temperature, can be well described by thermal excitations of elementary collective spin excitations (magnons). However, the behavior of magnons themselves, as a function of temperature and across the transition temperature T_{C}, is an unknown issue. Utilizing spin-polarized high resolution electron energy loss spectroscopy, we monitor the high-energy (terahertz) magnons, excited in an ultrathin ferromagnet, as a function of temperature...
March 24, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28387142/preece-baines-model-1-to-estimate-height-and-knee-height-growth-in-boys-and-girls-from-merida-mexico
#15
Sudip Datta Banik, Sedigheh Mirzaei Salehabadi, Federico Dickinson
BACKGROUND: Height and body segments in children have differential pubertal growth characteristics. Lower leg length is a sensitive indicator of child's nutritional status. OBJECTIVE: The purpose of this study was to estimate differential timing and tempo of height and knee height (KH) growth in 9- to 17-year-old boys (n = 475) and girls (n = 500) from Merida, Mexico. METHODS: In this cross-sectional study, the Preece-Baines growth curves-model 1 (PB 1) was fitted to the anthropometric data for height and KH...
January 1, 2017: Food and Nutrition Bulletin
https://www.readbyqxmd.com/read/28382550/sitting-position-affects-performance-in-cross-country-sit-skiing
#16
M Lund Ohlsson, M S Laaksonen
PURPOSE: In cross-country sit-skiing (XCSS), athletes with reduced trunk control predominantly sit with the knees higher than the hips (KH); a position often associated with large spinal flexion. Therefore, to improve spinal curvature a new sledge with frontal trunk support, where knees are lower than hips (KL) was created. It was hypothesized that the KL position would improve respiratory function and enhance performance in seated double-poling compared to KH. METHODS: Ten female able-bodied cross-country skiers (age 25...
April 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28380298/acetaldehyde-ammonia-interaction-a-dft-study-of-reaction-mechanism-and-product-identification
#17
Vera P Tuguldurova, Alexander V Fateev, Victor S Malkov, Oleg Kh Poleshchuk, Olga V Vodyankina
The product of acetaldehyde and ammonia reaction, namely, 2,4,6-trimethyl-1,3,5-hexahydrotriazine trihydrate, was synthesized and identified using a combination of experimental (NMR spectroscopy, IR spectroscopy, melting point determination) and DFT-based theoretical approaches. A reaction mechanism was proposed. The reaction was shown to proceed via the formation of aminoalcohol, imine, and geminal diamine intermediates accompanied by cyclization of these species. The calculation results allowed us to build a potential energy surface of the acetaldehyde and ammonia interaction and determine the most energetically favorable pathway to yield acetaldehyde ammonia trimer...
April 13, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28376800/glycemia-and-the-cardioprotective-effects-of-insulin-pre-conditioning-in-the-isolated-rat-heart
#18
Yosuke Nakadate, Hiroaki Sato, Takeshi Oguchi, Tamaki Sato, Akiko Kawakami, Tadahiko Ishiyama, Takashi Matsukawa, Thomas Schricker
BACKGROUND: While acute hyperglycemia has been shown to mitigate the beneficial effects of ischemic preconditioning, its effect on insulin-induced preconditioning remains unclear. METHODS: The study was designed to test the hypothesis that acute hyperglycemia diminishes the cardioprotective effects following a 20-min pre-ischemic pre-conditioning with insulin in the isolated rat heart using the Langendorff system. Forty hearts were assigned to receive modified Krebs-Henseleit (KH) buffer containing 0...
April 4, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28371610/short-exogenous-peptides-regulate-expression-of-cle-knox1-and-grf-family-genes-in-nicotiana-tabacum
#19
L I Fedoreyeva, T A Dilovarova, V V Ashapkin, Yu Ts Martirosyan, V Kh Khavinson, P N Kharchenko, B F Vanyushin
Exogenous short biologically active peptides epitalon (Ala-Glu-Asp-Gly), bronchogen (Ala-Glu-Asp-Leu), and vilon (Lys-Glu) at concentrations 10(-7)-10(-9) M significantly influence growth, development, and differentiation of tobacco (Nicotiana tabacum) callus cultures. Epitalon and bronchogen, in particular, both increase growth of calluses and stimulate formation and growth of leaves in plant regenerants. Because the regulatory activity of the short peptides appears at low peptide concentrations, their action to some extent is like that of the activity of phytohormones, and it seems to have signaling character and epigenetic nature...
April 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28367457/comparative-assessment-of-cytokine-pattern-in-early-and-late-onset-of-neonatal-sepsis
#20
Kh S Khaertynov, S V Boichuk, S F Khaiboullina, V A Anokhin, A A Andreeva, V C Lombardi, M A Satrutdinov, E A Agafonova, A A Rizvanov
Neonatal sepsis is a significant health issue associated with high mortality. Immune responses associated with neonatal sepsis, such as proinflammatory cytokine production, are believed to play a central role in the pathogenesis of this disease. In the present study, serum levels of the proinflammatory cytokines TNF-α, IL1-β, and IL-6 and the anti-inflammatory cytokines IL-4 and IL-10 were evaluated for 25 subjects with neonatal sepsis. We observed that subjects with late onset of sepsis (LOS), as well as those with early onset of sepsis (EOS), had a substantial increase in serum TNF-α...
2017: Journal of Immunology Research
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