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https://www.readbyqxmd.com/read/28941399/comparison-of-uv-led-and-low-pressure-uv-for-water-disinfection-photoreactivation-and-dark-repair-of-escherichia-coli
#1
Guo-Qiang Li, Wen-Long Wang, Zheng-Yang Huo, Yun Lu, Hong-Ying Hu
Studies on ultraviolet light-emitting diode (UV-LED) water disinfection have shown advantages, such as safety, flexible design, and lower starting voltages. However, information about reactivation after UV-LED disinfection is limited, which is an important issue of UV light-based technology. In this study, the photoreactivation and dark repair of Escherichia coli after UV-LEDs and low pressure (LP) UV disinfection were compared. Four UV-LED units, 265 nm, 280 nm, the combination of 265 + 280 (50%), and 265 + 280 (75%) were tested...
September 17, 2017: Water Research
https://www.readbyqxmd.com/read/28941398/the-mechanisms-mediating-the-antiepileptic-effects-of-the-ketogenic-diet-and-potential-opportunities-for-improvement-with-metabolism-altering-drugs
#2
REVIEW
Neil A Youngson, Margaret J Morris, Bill Ballard
The ketogenic diet (KD) is increasingly being used to treat patients with intractable epilepsy. Despite decades of research, the reason for its success, when anticonvulsants have failed, is still not completely understood. There are, however, many candidate mechanisms which can be grouped into those that alter neuronal excitability at the synapse, and those that confer neuroprotection. The molecular underpinning of these mechanisms centres on the shift from glucose- to lipid-based energy generation that accompanies a high fat/low carbohydrate diet...
September 13, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28938784/immunocastration-as-an-alternative-to-caponization-evaluation-of-its-effect-on-body-and-bone-development-and-on-meat-color-and-composition
#3
M A G Quaresma, I C Antunes, M F Ribeiro, S Prazeres, R J B Bessa, P Martins da Costa
Caponization is associated with some morbidity and mortality, which contributes to important economic losses. This practice is executed without any pain relief (neither anesthesia nor analgesia) and can be painful and without consideration of animal welfare. On the other hand, immunocastration accomplished by Improvac and Bovipriva in pigs and cattle represents a noninvasive procedure, and for that reason is regarded as an alternative with improved animal welfare. This study includes 4 experimental groups consisting of capons, slips, roosters, and birds submitted to the Improvac treatment...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938748/random-start-ovarian-stimulation-for-fertility-preservation-appears-unlikely-to-delay-initiation-of-neoadjuvant-chemotherapy-for-breast-cancer
#4
Joseph M Letourneau, Nikita Sinha, Kaitlyn Wald, Eve Harris, Molly Quinn, Tal Imbar, Evelyn Mok-Lin, A Jo Chien, Mitchell Rosen
STUDY QUESTION: Is random start ovarian stimulation associated with delays in initiation of neoadjuvant chemotherapy for breast cancer? SUMMARY ANSWER: Among women who complete fertility preservation (FP) consultation, random start ovarian stimulation is unlikely to delay time to initiation of neoadjuvant chemotherapy start. WHAT IS KNOWN ALREADY: Neoadjuvant chemotherapy is now a widely accepted treatment modality for operable breast cancer and random start ovarian stimulation is an increasingly-utilized modality for FP...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938684/efficacy-and-safety-of-everolimus-in-chinese-metastatic-hr-positive-her2-negative-breast-cancer-patients-a-real-world-retrospective-study
#5
Chengcheng Gong, Yannan Zhao, Biyun Wang, Xichun Hu, Zhonghua Wang, Jian Zhang, Sheng Zhang
BACKGROUND: Everolimus combined with endocrine therapy has been proved to be effective among postmenopausal women with hormone receptor-positive human epidermal growth factor receptor-2 negative (HR+/HER2-) metastatic breast cancer (MBC). We aimed to evaluate the efficacy and safety of everolimus plus endocrine therapy in Chinese real-world practice for the first time, and investigate factors associated with efficacy. METHODS: Seventy-five HR+/HER2- MBC patients were included in this retrospective study who received everolimus plus endocrine therapy after progression on prior endocrine therapy in Fudan University Shanghai Cancer Center (FUSCC) between June 2013 and February 2016...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938464/sex-differences-in-steroid-receptor-co-expression-and-circadian-timed-activation-of-kisspeptin-and-rfrp-3-neurons-may-contribute-to-the-sexually-dimorphic-basis-of-the-lh-surge
#6
Matthew C Poling, Elena Y Luo, Alexander S Kauffman
In rodents, the ovulation-inducing LH surge is sexually dimorphic, occurring only in females, but the reasons for this sex difference are unclear. Two neuropeptides, kisspeptin and RFRP-3, are hypothesized to regulate the GnRH/LH surge. In females, both these systems show circadian changes coincident with the LH surge, but whether males show similar temporal changes under comparable hormonal conditions is unknown. Here, we evaluated circadian time (CT)-dependent changes in gene expression and neuronal activation of Kiss1 and Rfrp neurons of female and male mice given identical LH surge-inducing estrogen regimens...
August 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938407/fibroblast-growth-factor-21-metabolic-role-in-mice-and-men
#7
Harald Staiger, Michaela Keuper, Lucia Berti, Martin Hrabe de Angelis, Hans-Ulrich Häring
Since its identification in 2000, the interest of scientists in the hepatokine fibroblast growth factor (FGF) 21 has tremendously grown, and still remains high, due to a wealth of very robust data documenting this factor's favorable effects on glucose and lipid metabolism in mice. For more than ten years now, intense in vivo and ex vivo experimentation addressed the physiological functions of FGF21 in humans as well as its pathophysiological role and pharmacological effects in human metabolic disease. This work produced a comprehensive collection of data revealing overlaps in FGF21 expression and function but also significant differences between mice and men that have to be considered before translation from bench to bedside can be successful...
July 28, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/28938392/segmental-bone-loss-reconstruction-using-ring-fixation
#8
Stephen M Quinnan
Ring fixation is a powerful tool in the treatment of bone defects. The ability to create high-quality, biologically normal new bone of even massive proportions using distraction osteogenesis is a major reason for its success. In addition, ring fixation provides the ability to limit the risk of deep infection, improves flexibility in limb length control and alignment, and increases soft tissue coverage options. The drawbacks of ring fixation include long frame times, pin problems, risk of joint contractures, and difficult usage in areas with a large soft tissue envelope such as the thigh...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938215/evaluation-of-bioenergy-crop-growth-and-the-impacts-of-bioenergy-crops-on-streamflow-tile-drain-flow-and-nutrient-losses-in-an-extensively-tile-drained-watershed-using-swat
#9
Tian Guo, Raj Cibin, Indrajeet Chaubey, Margaret Gitau, Jeffrey G Arnold, Raghavan Srinivasan, James R Kiniry, Bernard A Engel
Large quantities of biofuel production are expected from bioenergy crops at a national scale to meet US biofuel goals. It is important to study biomass production of bioenergy crops and the impacts of these crops on water quantity and quality to identify environment-friendly and productive biofeedstock systems. SWAT2012 with a new tile drainage routine and improved perennial grass and tree growth simulation was used to model long-term annual biomass yields, streamflow, tile flow, sediment load, and nutrient losses under various bioenergy scenarios in an extensively agricultural watershed in the Midwestern US...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938141/amendment-damages-the-function-of-continuous-flooding-in-decreasing-cd-and-pb-uptake-by-rice-in-acid-paddy-soil
#10
Xinxin Ye, Hongying Li, Ligan Zhang, Rushan Chai, Renfeng Tu, Hongjian Gao
Combinations of remediation technologies are needed to solve the problem of soil contamination in paddy rice, due to multiple potential toxic elements (PTEs). Two potential mitigation methods, water management and in-situ remediation by soil amendment, have been widely used in treatment of PTE-polluted paddy soil. However, the interactive relationship between soil amendment and water management, and its influence on the accumulation of PTEs in rice are poorly understood. Greenhouse pot experiments were conducted to examine the effects of phosphate amendment on Cd and Pb availability in soil and their influence on Cd and Pb uptake into rice, on Fe and P availability in soil, and on the alteration of Fe amount and compartment on root surface among different water management strategies...
September 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28938011/a-novel-hazard-assessment-method-for-biomass-gasification-stations-based-on-extended-set-pair-analysis
#11
Fang Yan, Kaili Xu, Deshun Li, Zhikai Cui
Biomass gasification stations are facing many hazard factors, therefore, it is necessary to make hazard assessment for them. In this study, a novel hazard assessment method called extended set pair analysis (ESPA) is proposed based on set pair analysis (SPA). However, the calculation of the connection degree (CD) requires the classification of hazard grades and their corresponding thresholds using SPA for the hazard assessment. In regard to the hazard assessment using ESPA, a novel calculation algorithm of the CD is worked out when hazard grades and their corresponding thresholds are unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28938002/regional-endothermy-as-a-trigger-for-gigantism-in-some-extinct-macropredatory-sharks
#12
Humberto G Ferrón
Otodontids include some of the largest macropredatory sharks that ever lived, the most extreme case being Otodus (Megaselachus) megalodon. The reasons underlying their gigantism, distribution patterns and extinction have been classically linked with climatic factors and the evolution, radiation and migrations of cetaceans during the Paleogene. However, most of these previous proposals are based on the idea of otodontids as ectothermic sharks regardless of the ecological, energetic and body size constraints that this implies...
2017: PloS One
https://www.readbyqxmd.com/read/28937951/effect-of-stress-level-on-different-forms-of-self-touch-in-pre-and-postadolescent-girls
#13
Kyra Densing, Hippokrates Konstantinidis, Melanie Seiler
Self-touch serves for regulation of both hyper- and hypoarousal. It remains unclear if different forms of self-touch occur in different contexts, and if the regulatory mechanisms are learned or innate. The authors describe forms and context of self-touch, and explore age differences in stress processing. They analyzed hand movements of 10 pre- and 10 postadolescent girls in low-stress and high-stress settings and found 3 forms of self-touch. In postadolescent participants, self-touch 2 (irregular structure, rhythmical, medium intensity) and 3 (phasic structure, single accent, medium intensity) were used for self-regulation, whereas self-touch 1 (irregular structure, single accent, low intensity) had conversational reasons...
September 22, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28937947/wastewater-treatment-by-means-of-thermophilic-aerobic-membrane-reactors-respirometric-tests-and-numerical-models-for-determination-of-stoichiometric-kinetic-parameters
#14
Maria Cristina Collivignarelli, Giorgio Bertanza, Alessandro Abbà, Vincenzo Torretta, Ioannis Anastasios Katsoyiannis
The present work considers the pollution abatement of wastewaters, the efficiency of which is depending on stringent verification of the performance of wastewater treatment plants. This is very important especially given that eExisting wastewater/aqueous waste treatment plants often need to be upgraded in order to improve their performance. The satisfactory operation of biological treatment plants requires appropriate monitoring, and respirometric techniques are needed to determine the kinetic parameters that regulate biological processes...
September 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28937887/characteristics-and-associated-comorbidities-of-pediatric-dental-patients-treated-under-general-anesthesia
#15
Alexandra Delfiner, Aaron Myers, Christie Lumsden, Steve Chussid, Richard Yoon
OBJECTIVE: To describe characteristics and identify common comorbidities of children receiving dental treatment under general anesthesia at Children's Hospital of New York-Presbyterian. STUDY DESIGN: Electronic medical records of all children that received dental treatment under general anesthesia through the Division of Pediatric Dentistry from 2012-2014 were reviewed. Data describing patient characteristics (age, sex, race/ethnicity, insurance carrier, and American Society of Anesthesiologists physical status classification system), medical history, and justification for treatment were collected...
September 22, 2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28937816/resemblance-to-the-enemy-s-eyes-underlies-the-intimidating-effect-of-eyespots
#16
Karin Kjernsmo, Sami Merilaita
Eyespots of some prey are known to deter predators, but the reason for this response has not yet been established, and thus the taxonomically widespread occurrence of this color pattern has remained an evolutionary conundrum. Two alternative hypotheses propose that (1) the eyelike appearance of the pattern falsely indicates the presence of the predator's own enemy or (2) predators are hardwired to be cautious toward conspicuous prey. Earlier research has pertained mainly to eyespots in butterflies. Here we tested the hypothesis that eyespots resemble eyes by utilizing the lateral position of eyes in fishes...
October 2017: American Naturalist
https://www.readbyqxmd.com/read/28937528/long-term-follow-up-of-patients-with-choroideremia-with-scleral-pits-and-tunnels-as-a-novel-observation
#17
Sanne M van Schuppen, Mays Talib, Arthur A Bergen, Jacoline B Ten Brink, Ralph J Florijn, Camiel J F Boon, Mary J van Schooneveld
PURPOSE: To evaluate the long-term clinical course and visual outcome of patients with choroideremia. METHODS: Clinical examination, a social questionnaire, and medical records review of 21 patients with choroideremia from 14 families. RESULTS: The mean follow-up time was 25.2 years (SD: 13.3; range 2-57 years). The mean age at symptom onset was 15.1 years (SD: 10.1; range 5-40 years). Best-corrected visual acuity was stable until the age of 35 (P = 0...
September 20, 2017: Retina
https://www.readbyqxmd.com/read/28937467/does-the-prevalence-of-spondylolysis-and-spina-bifida-occulta-observed-in-pediatric-patients-remain-stable-in-adults
#18
Julio Urrutia, Tomas Zamora, Jorge Cuellar
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To compare the prevalence of lumbar spondylolysis and spina bifida occulta (SBO) in pediatric and adult populations. SUMMARY OF BACKGROUND DATA: The prevalence of spondylolysis reported from radiograph-based studies in children had been questioned in computed tomography (CT)-based studies in adults; however, a recent CT-based study in pediatric patients has confirmed the previously reported data in pediatric populations...
October 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28937456/is-1-stage-posterior-corpectomy-more-favorable-compared-with-decompression-with-fusion-to-control-thoracic-cord-compression-by-metastasis
#19
Dae Geun Kim, Jung-Ki Ha, Chang Ju Hwang, Dong-Ho Lee, Choon Sung Lee, Jae Hwan Cho
STUDY DESIGN: A retrospective comparative study OBJECTIVE:: To compare 1-stage posterior corpectomy to decompression with fusion for the control of thoracic cord compression due to a metastatic tumor. SUMMARY OF BACKGROUND DATA: Thoracic cord compression by a metastatic tumor can cause back pain, paralysis, and urinary/bowel dysfunction and is generally treated by palliative decompressive surgery. However, no studies have assessed the advantages of 1-stage posterior corpectomy compared with decompression with fusion...
October 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28937450/parenting-to-reduce-child-screen-time-a-feasibility-pilot-study
#20
Wesley Sanders, Justin Parent, Rex Forehand
OBJECTIVE: Excessive screen time has been associated with a multitude of child health problems. This pilot study examined the feasibility and preliminary outcome of a novel 1-session intervention designed to help parents reduce their child's screen time. METHODS: Thirty-nine parents of 5- to 12-year-old children were randomized to the intervention (a combined didactics and hands-on approach focused on technology-specific parenting) or waitlist control group. RESULTS: The findings suggested that a sample could be recruited in a reasonable time (6 wk) at a reasonable cost, randomized, and retained at 6 weeks postintervention...
September 19, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
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