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https://www.readbyqxmd.com/read/29117005/coordination-of-gaze-behavior-and-foot-placement-during-walking-in-persons-with-glaucoma
#1
Andreas B Miller, Kim Lajoie, Robert A Strath, David R Neima, Daniel S Marigold
PURPOSE: Vision normally provides environmental information necessary to direct the foot to safe locations during walking. Peripheral visual field loss limits what a person can see, and may alter how a person visually samples the environment. Here we tested the hypothesis that the spatial-temporal coupling between gaze and stepping in a precision-based walking task is altered in persons with glaucoma, particularly under dual task situations, and results in reduced foot-placement accuracy...
November 7, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29053442/posterior-parietal-cortex-estimates-the-relationship-between-object-and-body-location-during-locomotion
#2
Daniel S Marigold, Trevor Drew
We test the hypothesis that the posterior parietal cortex (PPC) contributes to the control of visually guided locomotor gait modifications by constructing an estimation of object location relative to body state, and in particular the changing gap between them. To test this hypothesis, we recorded neuronal activity from areas 5b and 7 of the PPC of cats walking on a treadmill and stepping over a moving obstacle whose speed of advance was varied (slowed or accelerated with respect to the speed of the cat). We found distinct populations of neurons in the PPC, primarily in area 5b, that signaled distance- or time-to-contact with the obstacle, regardless of which limb was the first to step over the obstacle...
October 20, 2017: ELife
https://www.readbyqxmd.com/read/29053351/cadmium-accumulation-and-main-rhizosphere-characteristics-of-seven-french-marigold-tagetes-patula-l-cultivars
#3
Ruilian Sun, Qianqian Sun, Renqing Wang, Lidong Cao
The study was conducted to determine Cd accumulation and Cd fraction in the rhizosphere soil of seven Tagetes patula cultivars (Little Hero Orange, Durango Yellow, Janie Yellow Bright, Lucifer Yellow, Hero Flame, Hongyun Red, Konghuang Yellow). T. patula cultivars showed strong tolerance and accumulation to Cd. The highest Cd concentration (273.77 mg kg(-1)) in shoots was observed in Little Hero Orange when treated with Cd100. For most cultivars, Cd treatments significantly affected rhizosphere pH values, but had a slight effect on dissolved organic carbon (DOC)...
October 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29034145/swift-tuning-from-spherical-molybdenum-microspheres-to-hierarchical-molybdenum-disulfide-nanostructures-by-switching-from-solvothermal-to-hydrothermal-synthesis-route
#4
Nilam Qureshi, Sudhir Arbuj, Manish Shinde, Sunit Rane, Milind Kulkarni, Dinesh Amalnerkar, Haiwon Lee
Herein, we report the synthesis of metallic molybdenum microspheres and hierarchical MoS2 nanostructures by facile template-free solvothermal and hydrothermal approach, respectively. The morphological transition of the Mo microspheres to hierarchical MoS2 nanoflower architectures is observed to be accomplished with change in solvent from ethylenediamine to water. The resultant marigold flower-like MoS2 nanostructures are few layers thick with poor crystallinity while spherical ball-like molybdenum microspheres exhibit better crystalline nature...
2017: Nano Convergence
https://www.readbyqxmd.com/read/29023010/bio-controlling-effect-of-leaf-extract-of-tagetes-patula-l-marigold-on-growth-parameters-and-diseases-of-tomato
#5
Gayatri Nahak, Rajani Kanta Sahu
BACKGROUND: The genus Tagetes (Asteraceae) is native to Americas but some of its members (in particular T. erecta and T. patula) commonly known as marigolds were naturalized in the old world (India, North Africa and Europe) as early as in 16th century. The flowers of French marigold (Tagetes patula L.) are widely used in folk medicine, in particular for treating inflammation-related disorders. MATERIALS AND METHODS: This study investigated the potential use of marigold (Tagetes patula L...
2017: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/28965268/process-analysis-and-modeling-of-a-single-step-lutein-extraction-method-for-wet-microalgae
#6
Mengyue Gong, Yuruihan Wang, Amarjeet Bassi
Lutein is a commercial carotenoid with potential health benefits. Microalgae are alternative sources for the lutein production in comparison to conventional approaches using marigold flowers. In this study, a process analysis of a single-step simultaneous extraction, saponification, and primary purification process for free lutein production from wet microalgae biomass was carried out. The feasibility of binary solvent mixtures for wet biomass extraction was successfully demonstrated, and the extraction kinetics of lutein from chloroplast in microalgae were first evaluated...
September 30, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28866331/microcystin-lr-exposure-induces-oxidative-damage-in-caenorhabditis-elegans-protective-effect-of-lutein-extracted-from-marigold-flowers
#7
Paula Rossini Augusti, Allana Von Sulzback Brasil, Caroline Souto, Gabriela Göethel, Alessandro de Oliveira Rios, Tatiana Emanuelli, Marilise Escobar Bürger, Solange Cristina Garcia
Microcystin-LR (MIC-LR) is a hepatotoxin, with toxicity mechanisms linked to oxidative stress. Besides, neurotoxic effects of MIC-LR have recently been described. Herein, we evaluated the effects of environmentally important concentrations of MIC-LR (1, 10, 100, 250, and 500 μg/L) on oxidative stress markers and the survival rate of the nematode Caenorhabditis elegans (C. elegans). In addition, a possible protective effect of the carotenoid lutein (LUT) extracted from marigold flowers against MIC-LR toxicity was investigated...
August 31, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28767066/isorhamnetin-and-quercetin-derivatives-as-anti-acetylcholinesterase-principles-of-marigold-calendula-officinalis-flowers-and-preparations
#8
Daniil N Olennikov, Nina I Kashchenko, Nadezhda K Chirikova, Anzurat Akobirshoeva, Ifrat N Zilfikarov, Cecile Vennos
Marigold (Calendula officinalis L.) is one of the most common and widespread plants used medicinally all over the world. The present study aimed to evaluate the anti-acetylcholinesterase activity of marigold flowers, detect the compounds responsible and perform chemical analysis of marigold commercial products. Analysis of 23 varieties of C. officinalis flowers introduced into Siberia allowed us to select the Greenheart Orange variety due to the superior content of flavonoids (46.87 mg/g) and the highest inhibitory activity against acetylcholinesterase (IC50 63...
August 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28678585/differential-mobilization-and-metal-uptake-versus-leaching-in-multi-metal-soil-columns-using-edta-and-three-metal-bioaccumulators
#9
Firdaus-E- Bareen, Sarwat Saeed, Humera Afrasiab
Tannery waste is a major environmental concern needing proper management. Tannery solid waste (TSW) can be added to the soil as an organic amendment but needs metal removal. Chelant assisted phytoremediation hastens the process of metal removal but also poses risk of leaching. This research evaluates EDTA assisted phytoextraction and associated leaching hazard using metal tolerant plants. Greenhouse trials were carried out with sunflower, spinach and marigold using columns of uniform diameter packed with field soil and multi-metal contamination of TSW (5% and 10%) with four EDTA doses...
July 5, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28587561/short-term-motor-learning-and-retention-during-visually-guided-walking-in-persons-with-multiple-sclerosis
#10
Kayla McGowan, Shaila M Gunn, Galina Vorobeychik, Daniel S Marigold
BACKGROUND: The ability to adapt, a form of short-term motor learning, and retain this adaptation, is essential for rehabilitation and for day-to-day living. Yet little research is available on this topic in persons with multiple sclerosis (PwMS), particularly in relation to complex walking tasks. OBJECTIVE: To determine the ability of PwMS to learn and retain a novel relationship between visual input and motor output-or visuomotor map-during visually guided walking...
July 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28532966/bulimia-nervosa-purging-disorder
#11
Marigold Castillo, Eric Weiselberg
Bulimia nervosa was first described in 1979 by British psychiatrist Gerald Russell as a "chronic phase of anorexia nervosa" in which patients overeat and then use compensatory mechanisms, such as self-induced vomiting, laxatives, or prolonged periods of starvation. The characterization of bulimia nervosa continues to evolve with the introduction of the DSM-5 in 2013. In this article, the epidemiology and risk factors of bulimia nervosa are identified and reviewed, along with the medical complications and psychiatric comorbidities...
April 2017: Current Problems in Pediatric and Adolescent Health Care
https://www.readbyqxmd.com/read/28512726/cutaneous-reflex-modulation-during-obstacle-avoidance-under-conditions-of-normal-and-degraded-visual-input
#12
Daniel S Marigold, Andrew J Chang, Kim Lajoie
The nervous system integrates visual input regarding obstacles with limb-based sensory feedback to allow an individual to safely negotiate the environment. This latter source can include cutaneous information from the foot, particularly in the event that limb trajectory is not sufficient and there is an unintended collision with the object. However, it is not clear the extent to which cutaneous reflexes are modified based on visual input. In this study, we first determined if phase-dependent modulation of these reflexes is present when stepping over an obstacle during overground walking...
August 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28494614/evaluation-of-pigments-from-methanolic-extract-of-tagetes-erecta-and-beta-vulgaris-as-antioxidant-and-antibacterial-agent
#13
Mariya Saani, Reena Lawrence, Kapil Lawrence
The Total Phenolic Content (TPC), antioxidant and antibacterial activities of methanolic extract of Marigold flower (MF) (Tagetes erecta) and Beet root (BR) (Beta vulgaris) were examined. The present work reveals that MF contained greater amount of TPC (42.5 mg/g GAE) as compared to BR (39.4 mg/g GAE). Methanolic extract of MF exhibited excellent DPPH free radical scavenging power (IC50 0.0716 mg/mL) and reducing power at 1 mg/mL concentration. Similar results have been obtained in FTC and TBA method. The results of antibacterial test indicated that the methanolic extract of MF and BR is significantly effective against both type of Gram-negative (Escherichia coli, Shigella dysenteriae) and Gram-positive (Bacillus subtilis, Staphylococcus aureus) bacterial strains...
May 11, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28202077/repellent-effects-of-the-essential-oils-of-cymbopogon-citratus-and-tagetes-minuta-on-the-sandfly-phlebotomus-duboscqi
#14
Albert Kimutai, Moses Ngeiywa, Margaret Mulaa, Peter G N Njagi, Johnstone Ingonga, Lydia B Nyamwamu, Cyprian Ombati, Philip Ngumbi
BACKGROUND: The sandfly, Phlebotomus duboscqi is a vector of zoonotic cutaneous leishmaniasis (ZCL) that is an important public health problem in Eastern Africa. Repellents have been used for protection of humans against vectors of ZCL and other vectors that transmit killer diseases including malaria, Rift Valley fever, dengue, and yellow fever. The repellent effects of different doses of the essential oils from the lemon grass, Cymbopogon citratus and Mexican marigold, Tagetes minuta were evaluated in a two-chamber bioassay against 3- to 7-day-old unfed females of P...
February 15, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28183833/cytogeography-of-the-subalpine-marsh-marigold-polyploid-complex-caltha-leptosepala-s-l-ranunculaceae
#15
Keir M Wefferling, Sílvia Castro, João Loureiro, Mariana Castro, Daniela Tavares, Sara B Hoot
PREMISE OF THE STUDY: Unrecognized variation in ploidy level can lead to an underestimation of species richness and a misleading delineation of geographic range. Caltha leptosepala (Ranunculaceae) comprises a complex of hexaploids (6x), rare nonaploids (9x), and dodecaploids (12x), all with unknown distributions. We delineate the geographic distribution and contact zones of the cytotypes, investigate morphologies of cytotypes and subspecies, and discuss the biogeography and evolutionary history of the polyploid complex...
February 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28158923/ultrathin-mesoporous-ruco2-o4-nanoflakes-an-advanced-electrode-for-high-performance-asymmetric-supercapacitors
#16
Deepak P Dubal, Nilesh R Chodankar, Rudolf Holze, Do-Heyoung Kim, Pedro Gomez-Romero
A new ruthenium cobalt oxide (RuCo2 O4 ) with a unique marigold-like nanostructure and excellent performance as an advanced electrode material has been successfully prepared by a simple electrodeposition (potentiodynamic mode) method. The RuCo2 O4 marigolds consist of numerous clusters of ultrathin mesoporous nanoflakes, leaving a large interspace between them to provide numerous electrochemically active sites. Strikingly, this unique marigold-like nanostructure provided excellent electrochemical performance in terms of high energy-storage capacitance (1469 F g(-1) at 6 A g(-1) ) with excellent rate proficiency and long-lasting operating cycling stability (ca...
April 22, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28152899/initiating-a-lymphedema-screening-program-for-breast-cancer-patients-determining-variability-as-a-first-step-towards-standardization
#17
Susan E Ferguson, Sarah Marie DeSnyder, Parviz Kheirkhah, Susan Lilly, Marigold Travis, Theresa Johnson, Ana Alvarez, Duke Rohe, Thomas A Buchholz, Isabelle Bedrosian
267 Background: Breast cancer-related lymphedema (BCRL) is a known morbidity from treatment, and yet published estimates of its incidence are highly variable. Typically, a single volume measurement is recorded and the degree of intra-rater variability undefined. A threshold 5% limb volume change over time is used to define "mild lymphedema." Therefore, small variations in volume measurements could substantially lead to over or under-diagnosis of BRCL. Gage R&R is a measurement systems analysis tool that quantifies the amount of variability induced in measurements by the measurement system itself and compares this to the total variability observed...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28133596/hydrolysis-of-carotenoid-esters-from-tagetes-erecta-by-the-action-of-lipases-from-yarrowia-lipolytica
#18
Abraham Figueiras Abdala, Alfonso Pérez Gallardo, Lorenzo Guevara Olvera, Eleazar Máximo Escamilla Silva
The present study was conducted to evaluate the feasibility of enzymatic hydrolysis of carotenoid esters from Tagetes erecta using lipases from the yeast of Yarrowia lipolytica, with the aim of obtaining free lutein. The optimal concentrations of seven nutrients, considering the production of lipases relative to biomass (Yp/x) as the response variable, were determined in flask fermentations. In addition, we studied the effect on hydrolysis of growing Y. lipolytica in the presence of the oleoresin of the marigold flower in flask and stirred tank...
2017: Bioresources and Bioprocessing
https://www.readbyqxmd.com/read/28063268/evaluation-of-the-quality-of-herbal-teas-by-dart-tof-ms
#19
J Prchalová, F Kovařík, A Rajchl
The paper focuses on the optimization, settings and validation of direct analysis in real time coupled with time-of-flight detector when used for the evaluation of the quality of selected herbal teas (fennel, chamomile, nettle, linden, peppermint, thyme, lemon balm, marigold, sage, rose hip and St. John's wort). The ionization mode, the optimal ionization temperature and the type of solvent for sample extraction were optimized. The characteristic compounds of the analysed herbal teas (glycosides, flavonoids and phenolic and terpenic substances, such as chamazulene, anethole, menthol, thymol, salviol and hypericin) were detected...
February 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/27981402/the-response-of-marigold-tagetes-erecta-linn-to-ozone-impacts-on-plant-growth-and-leaf-physiology
#20
Ning Yang, Xiaoke Wang, Feixiang Zheng, Yuanyuan Chen
Progressively increasing ozone (O3) concentrations pose a potential threat to the value of marigold (Tagetes erecta Linn.), a plant widely used in urban landscaping. The response of marigold to elevated O3 has been reported earlier, but the mechanisms underlying the O3 effect have not been clearly elucidated. In the present study, we exposed marigold "Moonsong Deep Orange" plants to elevated O3, including ambient non-filtered air (NF) plus 60 ppb (NF+60) and 120 ppb (NF+120) O3, to assess visible injury and the possible physiological consequences of this pollutant...
January 2017: Ecotoxicology
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