288 research outputs found

    Living with multiple myeloma: A focus group study of unmet needs and preferences for survivorship care

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    Purpose: To describe the unmet informational, psychological, emotional, social, practical, and physical needs and preferences for posttreatment survivorship care of individuals living with multiple myeloma to inform the development of relevant, personcentered, survivorship services. Methods: An exploratory, descriptive study using 2 focus groups with 14 participants, 6 to 49 months postdiagnosis. Results: Thematic analysis revealed 7 key themes: information needs, experience with health-care professionals, coping with side effects, communicating with family and friends, dealing with emotions, support needs, and living with the chronicity of myeloma. Participants described key characteristics of survivorship care relevant to their needs and indicated they would like a more whole of person approach to follow-up when the main treatment phases had completed. Conclusion: Participants in this study described unmet needs across a breadth of domains that varied over time. The development of flexible, person-centered approaches to comprehensive survivorship care is needed to address the considerable quality-of-life issues experienced by people living with multiple myeloma. Nurse-led care may offer 1 viable model to deliver enhanced patient experience—providing the vital “link” that people described as missing from their survivorship care

    NOVEL IN SILICO APPROACH OF ANTICANCER ACTIVITY BY INHIBITING HEMOPEXIN PROTEINS WITH INDIGOFERA ASPALATHOIDESPLANT CONSTITUENTS AT ACTIVE SITE

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    Objective: The aim of the study was to investigate the anti-cancer activity using the phytoconstituents of Indigofera aspalathoides.Methods: The plant extract has been largely used as cell proliferation inhibitors. In this study, specific phytoconstituent has been targeted towardsmatrix metalloproteinases (MMPs).Results: MMPs are group of proteinases that are associated with cell invasion inhibition and also inhibit proliferation. The C-terminal domain ofMMPs mimics the serum protein hemopexin (HPX). According to various literatures, a reason for the failure of MMP as anti-cancer agent is thepresence of this HPX binding at the active site.Conclusion: A novel approach was carried to inhibit this binding by Carotal, (-)-Spathulenol, Tau.-Cadinol proteins from the plant I. aspalathoides. Keywords: Hemopexin, Matrix metalloproteinase, Indigofera aspalathoides, Molecular docking, Carotal, (-)-Spathulenol, Tau.-Cadinol

    CYTOTOXIC, APOPTOTIC EFFICACY OF SILVER NANOPARTICLES SYNTHESIZED FROM INDIGOFERA ASPALATHOIDS

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    Objective: To study the cytotoxic & apoptotic efficacy of synthesized silver nanoparticles from I. aspalathoids against Hep3B cell line. Methods: Hep3B cell line was purchased from American type culture collection (NCCS, Pune). The cells were treated with synthesized silver nanoparticles from I. aspalathoids for 24 & 48 hrs. Cell Viability was evaluated by MTT assay and DNA fragmentation assay. Results: The IC50 (half maximal inhibitory concentration) value of the AgNPs on Hep3B cells was calculated to be194.65ng/ml. The treated cells were compared to the control group with respect to morphology. The mechanism of cell death was studied through ethidium bromide/acridine orange. The live untreated cells had well organized chromatin structures, whereas the treated cells had fragmented or condensed chromatin consisting of apoptotic nuclei. Therefore, the nuclear staining experiment shows that apoptosis started in 48h after addition of AgNPs to the culture medium. Conclusion: The study demonstrated the possible of the use of biologically synthesized silver nanoparticles from I. aspalathoids as an effective drug against cancer

    Design, crystal structure determination, molecular dynamic simulation and MMGBSA calculations of novel p38-alpha MAPK inhibitors for combating Alzheimer's disease

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    The hallmark of the Alzheimer's disease (AD) is the accumulation of aggregated, misfolded proteins. The cause for this accumulation is increased production of misfolded proteins and impaired clearance of them. Amyloid aggregation and tau hyperphosphorylation are the two proteinopathies which accomplish deprivation of cell and tissue hemostasis during neuropathological process of the AD, as a result of which progressive neuronal degeneration and the loss of cognitive functions. p38 mitogen-activated protein kinase (p38 MAPK) has been implicated in both the events associated with AD: tau protein phosphorylation and inflammation. p38 alpha MAPK pathway is activated by a dual phosphorylation at Thr180 and Tyr182 residues. Clinical and preclinical evidence implicates the stress related kinase p38 alpha MAPK as a potential neurotherapeutic target. Drug design of p38 alpha MAPK inhibitors is mainly focused on small molecules that compete for Adenosine triphosphate in the catalytic site. Here we have carried out the synthesis of phenyl sulfonamide derivatives Sulfo (I) and Sulfo (II). Crystal structures of Sulfo (I) and Sulfo (II) were solved by direct methods using SHELXS-97. Sulfo (I) and Sulfo (II) have R(int)values of 0.0283 and 0.0660, respectively, indicating good quality of crystals and investigated their ability against p38 alpha MAPK. Docking studies revealed that the Sulfo (I) had better binding affinity (-62.24 kcal/mol) as compared to Sulfo (II) and cocrystal having binding affinity of -54.61 kcal/mol and -59.84 kcal/mol, respectively. Molecular dynamics simulation studies of Sulfo (I) and cocrystal of p38 alpha MAPK suggest that during the course of 30 ns simulation run, compound Sulfo (I) attained stability, substantiating the consistency of its binding to p38 alpha MAPK compared to cocrystal. Binding free energy analysis suggests that the compound Sulfo (I) is better than the cocrystal. Thus, this study corroborates the therapeutic potential of synthesized Sulfo (I) in combatting AD

    Impact of the orientation of seed placement and depth of its sowing on germination: A review

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    Seed orientation and its impacts on germination and seedling establishment mainly depend on the type of germination (hypogeal (or) epigeal), seed size and shape. Higher germination per cent is noticed when seeds are sown in the horizontal position. Planting seeds in a downward position can lead to a variety of physiological, chemical and morphological changes in seedlings. Consequences are usually manifested as noticeable modifications in their development. Vigorous seeds have strong, resilient seedlings due to their well-balanced metabolism and coordinated subcellular activity, making them well-suited for tough environments. Proper plumule and radicle growth require additional hormones and energy to ensure seedling survival. Four necessary factors must be considered while deciding the sowing depth viz., soil moisture, optimum soil temperature, soil aeration and atmospheric humidity required for seed germination, emergence and seedling growth. Variations are observed in germination behaviour and seedling growth for different sowing depths. The necessary factors are very much important for efficient nursery seedlings production. This review looks at the effects of seed depth and orientation on the germination and growth of important agricultural, horticultural and silvicultural crops

    Investigations on Reactivity Controlled Compression Ignition Combustion with Different Injection Strategies using Alternative Fuels Produced from Waste Resources

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    Reactivity-controlled compression ignition (RCCI) is a promising low-temperature combustion (LTC) strategy that results in low oxides of nitrogen (NOx) and soot emissions while maintaining high thermal efficiency. At the same time, RCCI leads to increased unburned hydrocarbon (HC) and carbon monoxide (CO) emissions in the exhaust, particularly under low loads. The current work experimented novel port-injected RCCI (PI-RCCI) strategy to overcome the high unburned emission limitations at low load conditions in RCCI. PI-RCCI is a port injection strategy in which low-reactivity fuel (LRF) is injected using a low-pressure injector, and the high-reactivity fuel (HRF) is injected through a high-pressure common rail direct injection (CRDI) injector. The low volatile HRF is injected into a heated fuel vaporizer maintained at 180°C in the intake manifold during the suction stroke. Modifying a singlecylinder, light-duty diesel engine with the necessary intake and fuel injection systems allows engine operation in both RCCI and PI-RCCI modes. Alternative fuels from waste resources such as waste cooking oil biodiesel (WCO) and plastic waste oil (WPO) are used as the HRF and LRF fuel in RCCI and PI-RCCI. To achieve maximum thermal efficiency in RCCI, the premixed energy ratio and the start of injection of the direct-injected fuel are optimized at all load conditions. The engine performance and exhaust emissions characteristics in PI-RCCI are compared with RCCI as a baseline reference. The results show a 70% and 48% reduction in CO and HC emissions, respectively, in PI-RCCI than in RCCI. Further, the brake thermal efficiency (BTE) was enhanced by around 20%, and the brake-specific fuel consumption (BSFC) was reduced by 13% in PI-RCCI. The NOx emissions decreased without any considerable changes in soot emission in PI-RCCI. The current study shows that fuels derived from waste resources can be used in RCCI and PI-RCCI modes with better engine performance and lower emissions

    A Novel Signal Processing Method for Friction and Sliding Wear

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    © 2021 by ASME. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1115/1.4052063This current study proposed a new computationally efficient and comparatively accurate algorithm for calculating both static and dynamic coefficients of friction from high frequency data. Its scope embraced an application in a real-time friction-based system, such as active braking safety systems in automobile industries. The signal sources were from a heavy-duty reciprocating dry sliding wear test platform, focused on experimental data related to friction induced by stick-slip phenomena. The test specimen was a polytetrafluoroethylene (PTFE)-coated basalt/vinyl ester composite material, tested at a large scale. The algorithm was primarily aimed to provide scalability for processing significantly large tribological data in a real-time. Besides a computational efficiency, the proposed method adopted to evaluate both static and dynamic coefficients of friction using the statistical approach exhibited a greater accuracy and reliability when compared with the extant models. The result showed that the proposed method reduced the computation time of processing and reduced the variation of the absolute values of both static and dynamic frictions. However, the variation of dynamic friction was later increased at a particular threshold, based on the test duration.Peer reviewe

    Nephrology training in Australia and New Zealand: a survey of outcomes and adequacy

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    Advanced training programmes in nephrology should provide broad exposure to all aspects of nephrology. In Australia and New Zealand (ANZ), the Advanced Training Committee in Nephrology oversees training, and recent increases in trainee numbers have led to concern about dilution of experience.To investigate early career paths of nephrologists in ANZ and determine the adequacy of training by comparing self-determined competency and skill relevance among recently graduated nephrologists.In 2015, the Advanced Training Committee in Nephrology administered an online survey during the annual subscription for members of the Australian and New Zealand Society of Nephrology. Nephrologists who were awarded Fellowship after 2002 were invited to participate.The survey was completed by 113 Fellows with 8 respondents excluded (response rate 44.1%). Initial post-Fellowship work included full-time public hospital appointments (34.3%) or undertaking full-time higher research degrees (41.9%). The majority reported securing their desired employment. Respondents indicated adequate training in most clinical skills; however, responses of 'well trained' in home haemodialysis (41.8%), conservative care (42.9%), automated peritoneal dialysis (38.8%), and assessment of kidney transplant recipients (48%) and living kidney donors (34.7%) were less adequate. Although considered highly relevant to current practice, responses of 'well trained' were low for management and research skills, including complaint management (16.3%), private practice management (2%), health system knowledge (14.3%) and regulations (6.1%), ethics approval (23.5%), research funding (11.2%) and quality assurance (26.5%).Nephrology training in ANZ generally meets clinical needs and most secure their desired employment. Training in management and research are areas for improvement
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