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https://www.readbyqxmd.com/read/28439264/benthic-diatom-based-indices-for-water-quality-assessment-in-two-subtropical-streams
#1
Xiang Tan, Quanfa Zhang, Michele A Burford, Fran Sheldon, Stuart E Bunn
Benthic diatoms have been universally used as indicators to assess water quality in lotic ecosystems. However, most diatom-based indices developed in Europe have not been widely used or tested in other continents such as Asia or Oceania. This study compared the performance of 14 widely-applied diatom indices in assessing ecological conditions in subtropical streams in South East Queensland (SEQ) in Australia and in the upper Han River in China. Most water quality variables in the upper Han River including dissolved organic carbon (DOC), total nitrogen (TN), and soluble reactive phosphorus (SRP) had strong relationships with at least one diatom index, with the exception of IDAP (Index Diatom Artois-Picardie), and TDI (Trophic Diatom Index)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28436473/volumetric-chemical-imaging-by-stimulated-raman-projection-microscopy-and-tomography
#2
Xueli Chen, Chi Zhang, Peng Lin, Kai-Chih Huang, Jimin Liang, Jie Tian, Ji-Xin Cheng
Volumetric imaging allows global understanding of three-dimensional (3D) complex systems. Light-sheet fluorescence microscopy and optical projection tomography have been reported to image 3D volumes with high resolutions and at high speeds. Such methods, however, usually rely on fluorescent labels for chemical targeting, which could perturb the biological functionality in living systems. We demonstrate Bessel-beam-based stimulated Raman projection (SRP) microscopy and tomography for label-free volumetric chemical imaging...
April 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28432834/molecular-control-of-gut-formation-in-the-spider-parasteatoda-tepidariorum
#3
Natália Martins Feitosa, Matthias Pechmann, Evelyn E Schwager, Vitória Tobias-Santos, Alistair P McGregor, Wim G M Damen, Rodrigo Nunes da Fonseca
The development of a digestive system is an essential feature of bilaterians. Studies of the molecular control of gut formation in arthropods have been studied in detail in the fruit fly Drosophila melanogaster. However, little is known in other arthropods, especially in noninsect arthropods. To better understand the evolution of arthropod alimentary system, we investigate the molecular control of gut development in the spider Parasteatoda tepidariorum (Pt), the primary chelicerate model species for developmental studies...
April 22, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28425827/efficacy-of-glycine-powder-air-polishing-combined-with-scaling-and-root-planing-in-the-treatment-of-periodontitis-and-halitosis-a-randomised-clinical-study
#4
Ayse Caygur, Mohammed R Albaba, Atilla Berberoglu, Hasan Guney Yilmaz
Introduction This study was performed to evaluate the clinical efficacy of using the Perio-Flow device (Electro Medical Systems, Nyon, Switzerland) adjunctively with mechanical instrumentation on periodontal parameters and halitosis. Materials and Methods Sixty patients who presented with a 4- to 6-mm probing pocket depth were recruited for the study. Patients were randomly assigned to scaling and root planing (SRP) or SRP + glycine powder air-polishing (GPAP). For both groups, the plaque index, gingival index, pocket depth, bleeding on probing, and clinical attachment level scores were recorded at baseline and 1 month...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28423193/is-the-use-of-differences-in-the-magnitude-of-cal-gain-appropriate-for-making-conclusions-on-the-efficacy-of-non-surgical-therapeutic-means
#5
Cristiano Tomasi, Jan L Wennström
The article "Network Meta-Analysis of Studies Included in the Clinical Practice Guideline on the Nonsurgical Treatment of Chronic Periodontitis" by John et al. (2017) compares clinical attachment level (CAL) gains among nine adjuncts to scaling and root planing (SRP). The authors concluded that adjuncts improve CAL gain by about a third of a millimetre over 6-12 months compared to SRP alone, without significant differences among the adjuncts. However, as discussed by the authors the patient-perceived benefit of this additional gain is unclear...
April 19, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28413591/comparative-evaluation-of-efficacy-of-subgingivally-delivered-1-2-atorvastatin-and-1-2-simvastatin-in-the-treatment-of-intrabony-defects-in-chronic-periodontitis-a-randomized-controlled-trial
#6
Santosh S Martande, Minal Kumari, A R Pradeep, Sonender Pal Singh, Deepak Kumar Suke
Background. Statins are the recently evolved agents that aid in periodontal regeneration and ultimately in attaining periodontal health. Atorvastatin (ATV) and Simvastatin (SMV) are specific competitive inhibitors of 3-hydroxy-2-methyl-glutaryl coenzyme A reductase. The current study was conducted to compare the effectiveness of 1.2% ATV and 1.2% SMV, in addition to scaling and root planing (SRP), in the treatment of intrabony defects in subjects with chronic periodontitis. Methods. Ninety-six individuals were categorized into three treatment groups: SRP plus 1...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28411271/neural-correlates-of-semantic-prediction-and-resolution-in-sentence-processing
#7
Luigi Grisoni, Tally McCormick Miller, Friedemann Pulvermüller
Most brain imaging studies of language comprehension focus on activity following upon meaningful stimuli. Testing adult human participants with high-density EEG, we show that, already before the presentation of a critical word, context-induced semantic predictions are reflected by a neurophysiological index, which we therefore call the Semantic Readiness Potential (SRP). The SRP precedes critical words if previous sentence context constrains the upcoming semantic content (High-constraint contexts), but not in unpredictable (Low-constraint) contexts...
April 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28410509/effects-of-atmospheric-reactive-phosphorus-deposition-on-phosphorus-transport-in-a-subtropical-watershed-a-chinese-case-study
#8
Yang Gao, Zhuo Hao, Tiantian Yang, Nianpeng He, Xuefa Wen, Guirui Yu
Atmospheric phosphorus (P) deposition is not only an important external macronutrient source for aquatic ecosystems but also a major cause of high export coefficient (EC) values. However, there are limited numbers of studies in the literature that focus on estimating the deposition flux of reactive P (Pr). The aim of this study is to estimate the Pr deposition on the Xiangxi River watershed, and therefore, provide a comprehensive understanding about the Pr deposition on subtropical watersheds in China. Results have shown that maximal Pr deposition fluxes reached 12 kg km(-2) in our selected subtropical watershed...
April 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28406671/a-comparison-of-self-report-measures-of-psychopathy-among-nonforensic-samples-using-item-response-theory-analyses
#9
Siny Tsang, Randall T Salekin, C Adam Coffey, Jennifer Cox
This study investigated how well components of the psychopathy trait are measured among college students with the Levenson Self-Report Psychopathy Scale (LSRP), the Personality Assessment Inventory-Antisocial Features Scale (PAI ANT), the Psychopathic Personality Inventory-Short Form (PPI-SF), and the Self-Report Psychopathy Scale-II (SRP-II). Using Samejima (1969)'s graded response model (GRM), the subscales were found to vary in their ability to measure the corresponding latent traits. The LSRP primary psychopathy factor is more precise in measuring the latent trait than the secondary psychopathy factor...
April 13, 2017: Psychological Assessment
https://www.readbyqxmd.com/read/28403357/local-application-of-statins-in-the-treatment-of-experimental-periodontal-disease-in-rats
#10
Bianca Fernanda Espósito Santos, Eduardo Quintão Manhanini Souza, Maísa Ribeiro Pereira Lima Brigagão, Daniela Coelho de Lima, Leandro Araújo Fernandes
Objective: The objective of this study was to evaluate the local effects of statins as adjuvants for treatment by scaling and root planing (SRP) of periodontal disease induced in rats. Material and Methods: Ninety rats were used in the present experiment. Periodontal disease was induced in all animals using a cotton thread placed in the left first mandibular molar. After 7 days of induction, the bandage was removed and the animals were divided into three groups: 1) NT group (n=30), no treatment; 2) SRP group (n=30): SRP and irrigation with control gel; 3) S group (n=30) - SRP and irrigation with Simvastatin...
March 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28403331/effects-of-avocado-soybean-unsaponifiables-asu-on-the-treatment-of-ligature-induced-periodontitis-in-rats
#11
Guilherme José Pimentel Lopes de Oliveira, Luiz Guilherme Freitas de Paula, João Antônio Chaves de Souza, Rubens Spin-Neto, Andreas Stavropoulos, Rosemary Adriana Chiérici Marcantonio
The purpose of this study is to evaluate the effect of the avocado/soybean unsaponifiables (ASU) on the treatment of induced periodontitis in rats. Periodontitis was induced in 84 rats via ligature placement around the second upper molar, which was removed after 7 days, and scaling and root planning (SRP) was performed at this time. Subsequently, the rats were randomly allocated to four groups with 21 animals each: One SRP group in which saline solution was administered (SS), and three groups in which ASU was administered (0...
April 10, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28400136/reservoir-souring-latest-developments-for-application-and-mitigation
#12
Richard J Johnson, Benjamin D Folwell, Alexander Wirekoh, Max Frenzel, Torben Lund Skovhus
Sulphate-reducing prokaryotes (SRP) have been identified in oil field fluids since the 1920s. SRP reduce sulphate to sulphide, a toxic and corrosive species that impacts on operational safety, metallurgy and both capital and operational cost. Differences in water cut, temperature, pressure and fluid chemistry can impact on the observed H2S concentration, meaning that an increase in H2S concentration does not always correlate with activity of SRP. However it wasn't until the 1990s that SRP activity was accepted as the leading cause of reservoir souring (i...
April 8, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28397983/high-yield-production-of-recombinant-crm197-a-non-toxic-mutant-of-diphtheria-toxin-in-the-periplasm-of-escherichia-coli
#13
Philippe Goffina, Marianne Dewerchin, Philippe De Rop, Normand Blais, Philippe Dehottay
A high cell density fed-batch process was developed for production of recombinant CRM197, a non-toxic mutant of diphtheria toxin widely used as a carrier in polysaccharide-protein conjugate vaccines. Fully soluble recombinant CRM197 was obtained in high yields and with an authentic N-terminus, by targeting the protein to the periplasm of Escherichia coli using the Signal Recognition Particle (SRP)-dependent signal sequence of FlgI. Response Surface Methodology was used to optimize the set-points of key process parameters (pH and feed rate at induction)...
April 11, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28394081/the-effect-of-low-level-laser-therapy-as-an-adjunct-to-non-surgical-periodontal-treatment-on-gingival-crevicular-fluid-levels-of-transforming-growth-factor-beta-1-tissue-plasminogen-activator-and-plasminogen-activator-inhibitor-1-in-smoking-and-non-smoking
#14
F Pamuk, M Lütfioğlu, A Aydoğdu, C Z Koyuncuoglu, E Cifcibasi, O S Badur
BACKGROUND AND OBJECTIVE: This study aimed to investigate the effects of low-level laser therapy (LLLT) as an adjunct to scaling and root planing (SRP) on smoking and non-smoking patients with chronic periodontitis. MATERIAL AND METHODS: The study was conducted using a split-mouth design with 30 patients with chronic periodontitis (15 smokers, 15 non-smokers) and 30 healthy individuals matched for age, sex and smoking status as controls. Groups were constituted as follows: Cp+SRP+Sham: non-smokers with chronic periodontitis treated with SRP; Cp+SRP+LLLT: non-smokers with chronic periodontitis treated with SRP+LLLT; SCp+SRP+Sham: smokers with chronic periodontitis treated with SRP; SCp+SRP+LLLT: smokers with chronic periodontitis treated with SRP+LLLT; C: control group comprised of periodontally healthy non-smokers; SC: control group comprised of periodontally healthy smokers...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28389200/rituximab-therapy-in-necrotizing-autoimmune-myopathy-associated-with-anti-srp-antibody-a-clinical-case-review
#15
Francisco Javier Nóvoa Medina, José Gutiérrez Martínez, Yeray González González, Beatriz Romero Díaz, Sergio Machín García, Antonio Rosas Romero
Necrotizing autoimmune myopathy (NAM) is a rare and emerging entity of idiopathic inflammatory myopathy (IIM). They have been associated with connective tissue disorders, viral infections, malignancy, anti-signal recognition particle (SRP) and anti-3-hydroxy-3-methylglutaryl-coenzyme A reductase protein (with or without the use of statins). Anti-SRP associated NAM has different clinical and histological characteristics that differentiate them from other IIM, resulting in a poor prognosis. Very few cases treated with rituximab have been published, with varying clinical response...
April 4, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28380566/lake-nutrient-responses-to-integrated-conservation-practices-in-an-agricultural-watershed
#16
Richard E Lizotte, Lindsey M W Yasarer, Martin A Locke, Ronald L Bingner, Scott S Knight
Watershed-scale management efforts to reduce nutrient loads and improve the conservation of lakes in agricultural watersheds require effective integration of a variety of agricultural conservation best management practices (BMPs). This paper documents watershed-scale assessments of the influence of multiple integrated BMPs on oxbow lake nutrient concentrations in a 625-ha watershed of intensive row-crop agricultural activity during a 14-yr monitoring period (1996-2009). A suite of BMPs within fields and at field edges throughout the watershed and enrollment of 87 ha into the Conservation Reserve Program (CRP) were implemented from 1995 to 2006...
March 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28376696/functional-brain-alterations-during-self-reference-processing-in-adolescents-with-sexual-abuse-related-post-traumatic-stress-disorder-a-preliminary-report
#17
Fanny Dégeilh, Armelle Viard, Fabian Guénolé, Malo Gaubert, Pierre-Jean Egler, Stéphanie Egret, Priscille Gerardin, Jean-Marc Baleyte, Francis Eustache, Jacques Dayana, Bérengère Guillery-Girard
We proposed to explore the functional brain changes during a self-reference processing (SRP) task in adolescents with sexual abuse-related post-traumatic stress disorder (N = 10), compared with healthy adolescents (N = 10). While patients showed no behavioral disturbances in (SRP), they exhibited changes in activity and connectivity in regions involved in emotional regulation (amygdala and dorsal prefrontal cortex) and semantic memory (temporal and ventrolateral prefrontal regions). These preliminary results suggest that these alterations may have an effect on self-esteem which may contribute to a possible retention and impairment of symptoms in adulthood...
February 2017: Neurocase
https://www.readbyqxmd.com/read/28370949/beemer-langer-syndrome-is-a-ciliopathy-due-to-biallelic-mutations-in-ift122
#18
Karina C Silveira, Carolina A Moreno, Denise P Cavalcanti
Since most short-rib polydactyly phenotypes are due to genes involved with biogenesis and maintenance of the primary cilium, this group of skeletal dysplasias was recently designated as ciliopathies with major skeletal involvement. Beemer-Langer syndrome or short-rib polydactyly type IV, was first described in 1983, and has, thus far, remained without a defined molecular basis. The most recent classification of the skeletal dysplasias referred to this phenotype as an as-yet unproven ciliopathy. IFT122 is a gene that encodes a protein responsible for the retrograde transport along the cilium; it has been associated with this group of skeletal dysplasias...
March 28, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28370333/network-meta-analysis-of-studies-included-in-the-clinical-practice-guideline-on-the-nonsurgical-treatment-of-chronic-periodontitis
#19
REVIEW
Mike T John, Bryan S Michalowicz, Georgios A Kotsakis, Haitao Chu
AIM: The recent ADA-commissioned Clinical Practice Guideline on the nonsurgical treatment of chronic periodontitis has provided the most exhaustive library of clinical trials on scaling and root planing (SRP) with or without adjuncts. This network meta-analysis compared the adjuncts against each other. MATERIALS AND METHODS: A star-shaped network meta-analysis was performed based on 36 indirect comparisons of clinical attachment level (CAL) gains among nine adjuncts in 74 studies from the Clinical Practice Guideline...
March 31, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28369529/human-apo-srp72-and-srp68-72-complex-structures-reveal-the-molecular-basis-of-protein-translocation
#20
Yina Gao, Qi Zhang, Yue Lang, Yang Liu, Xiaofei Dong, Zhenhang Chen, Wenli Tian, Jun Tang, Wei Wu, Yufeng Tong, Zhongzhou Chen
The co-translational targeting or insertion of secretory and membrane proteins into the endoplasmic reticulum (ER) is a key biological process mediated by the signal recognition particle (SRP). In eukaryotes, the SRP68-SRP72 (SRP68/72) heterodimer plays an essential role in protein translocation. However, structural information on the two largest SRP proteins, SRP68 and SRP72, is limited, especially regarding their interaction. Herein, we report the first crystal structures of human apo-SRP72 and the SRP68/72 complex at 2...
March 20, 2017: Journal of Molecular Cell Biology
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