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Research Proposal on stress

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https://www.readbyqxmd.com/read/28544912/parallel-gene-selection-and-dynamic-ensemble-pruning-based-on-affinity-propagation
#1
Jun Meng, Jing Zhang, Yu-Shi Luan, Xin-Yu He, Li-Shuang Li, Yuan-Feng Zhu
Gene selection and sample classification based on gene expression data are important research areas in bioinformatics. Selecting important genes closely related to classification is a challenging task due to high dimensionality and small sample size of microarray data. Extended rough set based on neighborhood has been successfully applied to gene selection, as it can select attributes without redundancy and deal with numerical attributes directly. However, the computation of approximations in rough set is extremely time consuming...
May 17, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28544158/molecular-and-physiological-manifestations-and-measurement-of-aging-in-humans
#2
REVIEW
Sadiya S Khan, Benjamin D Singer, Douglas E Vaughan
Biological aging is associated with a reduction in the reparative and regenerative potential in tissues and organs. This reduction manifests as a decreased physiological reserve in response to stress (termed homeostenosis) and a time-dependent failure of complex molecular mechanisms that cumulatively create disorder. Aging inevitably occurs with time in all organisms and emerges on a molecular, cellular, organ, and organismal level with genetic, epigenetic, and environmental modulators. Individuals with the same chronological age exhibit differential trajectories of age-related decline, and it follows that we should assess biological age distinctly from chronological age...
May 23, 2017: Aging Cell
https://www.readbyqxmd.com/read/28542729/occupational-manual-activity-is-reflected-on-the-patterns-among-hand-entheses
#3
Fotios Alexandros Karakostis, Gerhard Hotz, Heike Scherf, Joachim Wahl, Katerina Harvati
OBJECTIVES: In anthropological sciences, entheses are widely utilized as occupational stress markers. However, the reaction of entheseal surfaces to mechanical loading is not well understood. Furthermore, previous studies on entheses relied on the individuals' occupation-at-death. Past research by one of us has identified two patterns among hand entheses, proposing that they reflect two synergistic muscle groups. Here, we investigate the association between these patterns and habitual manual activity using an extensively documented skeletal sample and a three-dimensional system of quantification...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28542700/modeling-thrombus-formation-and-growth
#4
REVIEW
Hamid Hosseinzadegan, Danesh K Tafti
The paper reviews the state-of-the-art in computational modeling of thrombus formation and growth and related phenomena including platelet margination, activation, adhesion, and embolization. Presently, there is a high degree of empiricism in the modeling of thrombus formation. Based on the experimentally observed physics, the review gives useful strategies for predicting thrombus formation and growth. These include determining blood components involved in atherosclerosis, effective blood viscosity, tissue properties, and methods proposed for boundary conditions...
May 22, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28539089/simulating-real-life-exposures-to-uncover-possible-risks-to-human-health-a-proposed-consensus-for-a-novel-methodological-approach
#5
A M Tsatsakis, D Kouretas, M N Tzatzarakis, P Stivaktakis, K Tsarouhas, K S Golokhvast, V N Rakitskii, V A Tutelyan, A F Hernandez, R Rezaee, G Chung, C Fenga, A B Engin, M Neagu, A L Arsene, A O Docea, E Gofita, D Calina, I Taitzoglou, J Liesivuori, A W Hayes, S Gutnikov, C Tsitsimpikou
In real life, consumers are exposed to complex mixtures of chemicals via food, water and commercial products consumption. Since risk assessment usually focuses on individual compounds, the current regulatory approach doesn't assess the overall risk of chemicals present in a mixture. This study will evaluate the cumulative toxicity of mixtures of different classes of pesticides and mixtures of different classes of pesticides together with food additives (FAs) and common consumer product chemicals using realistic doses after long-term exposure...
June 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28537579/developmental-origins-of-diabetes-an-indian-perspective
#6
REVIEW
G V Krishnaveni, C S Yajnik
The developmental origins of health disease (DOHaD) hypothesis proposes that altered environmental influences (nutrition, metabolism, pollutants, stress and so on) during critical stages of fetal growth predisposes individuals to diabetes and other non-communicable disease in later life. This phenomenon is thought to reflect permanent effects ('programming') of unbalanced fetal development on physiological systems. Intrauterine programming may underlie the characteristic Indian 'thin-fat' phenotype and the current unprecedented epidemic of diabetes on the backdrop of multigenerational maternal undernutrition in the country...
May 24, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28536394/complementary-approaches-to-existing-target-based-drug-discovery-for-identifying-novel-drug-targets
#7
REVIEW
Suhas Vasaikar, Pooja Bhatia, Partap G Bhatia, Koon Chu Yaiw
In the past decade, it was observed that the relationship between the emerging New Molecular Entities and the quantum of R&D investment has not been favorable. There might be numerous reasons but few studies stress the introduction of target based drug discovery approach as one of the factors. Although a number of drugs have been developed with an emphasis on a single protein target, yet identification of valid target is complex. The approach focuses on an in vitro single target, which overlooks the complexity of cell and makes process of validation drug targets uncertain...
November 21, 2016: Biomedicines
https://www.readbyqxmd.com/read/28529756/a-socioecological-framework-for-research-on-work-and-obesity-in-diverse-urban-transit-operators-based-on-gender-race-and-ethnicity
#8
REVIEW
BongKyoo Choi, Peter Schnall, Marnie Dobson, Haiou Yang, Dean Baker, YoungJu Seo
Urban transit (bus and rail) operators, totaling nearly 700,000 persons, are one of the heaviest occupational groups in the United States (US). Little is known about occupational risk factors for weight gain and obesity and their interrelationship with health-related behaviors, particularly among female minority (African Americans and Hispanics) transit operators who are at greater risk for obesity. As a step towards developing successful obesity interventions among urban transit operators, this paper aims to present a new socioecological framework for studying working conditions, chronic strain, health-related behaviors, weight gain/obesity, and obesity disparity in diverse urban transit operators based on gender, race, and ethnicity...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28507534/stress-and-alterations-in-bones-an-interdisciplinary-perspective
#9
REVIEW
Pia-Maria Wippert, Michael Rector, Gisela Kuhn, Karin Wuertz-Kozak
Decades of research have demonstrated that physical stress (PS) stimulates bone remodeling and affects bone structure and function through complex mechanotransduction mechanisms. Recent research has laid ground to the hypothesis that mental stress (MS) also influences bone biology, eventually leading to osteoporosis and increased bone fracture risk. These effects are likely exerted by modulation of hypothalamic-pituitary-adrenal axis activity, resulting in an altered release of growth hormones, glucocorticoids and cytokines, as demonstrated in human and animal studies...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28503179/molecular-and-evolutionary-mechanisms-of-cuticular-wax-for-plant-drought-tolerance
#10
REVIEW
Dawei Xue, Xiaoqin Zhang, Xueli Lu, Guang Chen, Zhong-Hua Chen
Cuticular wax, the first protective layer of above ground tissues of many plant species, is a key evolutionary innovation in plants. Cuticular wax safeguards the evolution from certain green algae to flowering plants and the diversification of plant taxa during the eras of dry and adverse terrestrial living conditions and global climate changes. Cuticular wax plays significant roles in plant abiotic and biotic stress tolerance and has been implicated in defense mechanisms against excessive ultraviolet radiation, high temperature, bacterial and fungal pathogens, insects, high salinity, and low temperature...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28499100/probing-for-neuroadaptations-to-unpredictable-stressors-in-addiction-translational-methods-and-emerging-evidence
#11
Jesse T Kaye, Daniel E Bradford, Katherine P Magruder, John J Curtin
Stressors clearly contribute to addiction etiology and relapse in humans, but our understanding of specific mechanisms remains limited. Rodent models of addiction offer the power, flexibility, and precision necessary to delineate the causal role and specific mechanisms through which stressors influence alcohol and other drug use. This review describes a program of research using startle potentiation to unpredictable stressors that is well positioned to translate between animal models and clinical research with humans on stress neuroadaptations in addiction...
May 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28497050/the-role-of-biologically-active-ingredients-from-natural-drug-treatments-for-arrhythmias-in-different-mechanisms
#12
REVIEW
Jie Li, Dan Hu, Xiaoli Song, Tao Han, Yonghong Gao, Yanwei Xing
Arrhythmia is a disease that is caused by abnormal electrical activity in the heart rate or rhythm. It is the major cause of cardiovascular morbidity and mortality. Although several antiarrhythmic drugs have been used in clinic for decades, their application is often limited by their adverse effects. As a result, natural drugs, which have fewer side effects, are now being used to treat arrhythmias. We searched for all articles on the role of biologically active ingredients from natural drug treatments for arrhythmias in different mechanisms in PubMed...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28487497/the-involvement-of-darpp-32-in-the-pathophysiology-of-schizophrenia
#13
REVIEW
Haitao Wang, Mohd Farhan, Jiangping Xu, Philip Lazarovici, Wenhua Zheng
Schizophrenia is one of the most devastating heterogeneous psychiatric disorders. The dopamine hypothesis is the longest standing pathoetiologic theory of schizophrenia based on neurochemical evidences of elevated brain striatal dopamine synthesis capacity and increased dopamine release in response to stress. Dopamine and cyclic AMP-regulated phosphoprotein of relative molecular mass 32,000 (DARPP-32) is a cytosolic protein highly enriched in the medium spiny neurons of the neostriatum, considered as the most important integrator between the cortical input and the basal ganglia, and associated with motor control...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28484666/hearing-and-balance-disorders-in-the-state-of-hawai-i-demographics-and-demand-for-services
#14
Mohsin Ahmed M Shaikh, James W Hall, Cindy McManus, Henry L Lew
Hearing and balance disorders affect people of all ages. Among children, hearing loss affects speech and language development, academic performance, and psychosocial development. Hearing loss in adults negatively impacts work productivity, cognitive function, and psychosocial status. Prevalence of hearing loss in children in Hawai'i is higher than the national average. Research indicates that hearing loss is a prevalent condition among veterans and advanced age adults. This is of particular concern in Hawai'i as the state is home to many military training facilities and has a large elderly population...
May 2017: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/28481579/is-the-alliance-really-therapeutic-revisiting-this-question-in-light-of-recent-methodological-advances
#15
Sigal Zilcha-Mano
The therapeutic value of alliance is a contested supposition. Although many theorists and researchers believe that alliance is therapeutic in itself, others see it as a byproduct of effective treatment or as a common nonspecific factor enabling the truly effective ingredients of treatment to work. For many years, the debate was confined mainly to the domain of theory, and no studies were available to confirm which of these approaches is correct. The only empirical evidence that existed was studies showing a correlation between alliance and outcome, and advocates of the above conflicting opinions used the same correlation to prove the validity of their position...
May 2017: American Psychologist
https://www.readbyqxmd.com/read/28478822/animal-nutrition-and-breeding-conditions-modify-the-physiology-of-isolated-primary-cells
#16
Irina Milisav, Blaž Banič, Dušan Šuput
Animal primary cell cultures are widely used in biomedical research to investigate cell metabolism, diseases and to devise novel treatments. Modern animal breeding techniques are developed to unify, control and reduce the amount of microorganisms that the animals are being exposed to. Furthermore, health monitoring and strict caging and handling protocols allow animals to be exposed only to a selected spectrum of microbes. We are starting to appreciate that nutrition can influence composition of gut microbiota that can impact hosting organism's physiology and can even result in development of pathological changes...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28473776/the-role-of-trauma-and-stressful-life-events-among-individuals-at-clinical-high-risk-for-psychosis-a-review
#17
REVIEW
Danessa Mayo, Sarah Corey, Leah H Kelly, Seghel Yohannes, Alyssa L Youngquist, Barbara K Stuart, Tara A Niendam, Rachel L Loewy
The experience of childhood trauma (CT) and stressful life events (SLEs) is associated with subsequent development of a variety of mental health conditions, including psychotic illness. Recent research identifying adolescents and young adults at clinical high risk (CHR) for psychosis allows for prospective evaluation of the impact of trauma and adverse life events on psychosis onset and other outcomes, addressing etiological questions that cannot be answered in studies of fully psychotic or non-clinical populations...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28472512/chloroplast-function-and-ion-regulation-in-plants-growing-on-saline-soils-lessons-from-halophytes
#18
Jayakumar Bose, Rana Munns, Sergey Shabala, Matthew Gilliham, Barry Pogson, Stephen D Tyerman
Salt stress impacts multiple aspects of plant metabolism and physiology. For instance it inhibits photosynthesis through stomatal limitation, causes excessive accumulation of sodium and chloride in chloroplasts, and disturbs chloroplast potassium homeostasis. Most research on salt stress has focused primarily on cytosolic ion homeostasis with few studies of how salt stress affects chloroplast ion homeostasis. This review asks the question whether membrane-transport processes and ionic relations are differentially regulated between glycophyte and halophyte chloroplasts and whether this contributes to the superior salt tolerance of halophytes...
May 2, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28471212/hierarchical-structure-of-emotional-disorders-from-individual-symptoms-to-the-spectrum
#19
Monika A Waszczuk, Roman Kotov, Camilo Ruggero, Wakiza Gamez, David Watson
Classification of emotional disorders faces challenges of within-disorder heterogeneity and between-disorder comorbidity. The current study addressed these issues by analyzing all emotional disorder symptoms to identify homogeneous dimensions that characterize this domain. These dimensions were, in turn, used to define coherent syndromes and higher order factors. All of the emotional disorder symptoms specified in diagnostic manuals were assessed by interview in 2 treatment-seeking samples (N = 426 and 305), alongside clinical diagnoses and functioning measures...
May 4, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28464007/osteoarthritis-labour-division-and-occupational-specialization-of-the-late-shang-china-insights-from-yinxu-ca-1250-1046-b-c
#20
Hua Zhang, Deborah C Merrett, Zhichun Jing, Jigen Tang, Yuling He, Hongbin Yue, Zhanwei Yue, Dongya Y Yang
This research investigates the prevalence of human osteoarthritis at Yinxu, the last capital of the Late Shang dynasty (ca. 1250-1046 B.C.), to gain insights about lifeways of early urban populations in ancient China. A total of 167 skeletal remains from two sites (Xiaomintun and Xin'anzhuang) were analyzed to examine osteoarthritis at eight appendicular joints and through three spinal osseous indicators. High osteoarthritis frequencies were found in the remains with males showing significantly higher osteoarthritis on the upper body (compared to that of the females)...
2017: PloS One
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