keyword
MENU ▼
Read by QxMD icon Read
search

Negative reinforcement

keyword
https://www.readbyqxmd.com/read/28636503/effects-of-instructional-physical-activity-courses-on-overall-physical-activity-and-mood-in-university-students
#1
James J Annesi, Kandice J Porter, Grant M Hill, Bernard D Goldfine
PURPOSE: The aim of this research was to assess the association between university-based instructional physical activity (PA) courses and changes in overall PA levels and negative mood and their interrelations. The study also sought to determine the amount of change in PA required to significantly improve mood in course enrollees. METHOD: Participants were university students initially completing PA below the level recommended for health who were either presently enrolled in an elective instructional PA course (treatment group, n = 52, 69% female) or not presently enrolled in such a course (comparison group, n = 32, 69% female)...
June 21, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28629302/-pimping-in-pharmacy-education-a-survey-and-comparison-of-student-and-faculty-views
#2
Eric A Williams, Andrew R Miesner, Emily A Beckett, Sarah E Grady
BACKGROUND: "Pimping" is an informal teaching technique that is widely used in medical education. Pimping is characterized by questioning the learner with the intent of reinforcing clinical hierarchy. To date, there are no studies of the use of pimping in pharmacy education. OBJECTIVES: To describe the use of pimping as a teaching method in pharmacy education and to compare student and faculty perceptions of this technique. METHODS: Faculty and fourth-year PharmD (P4) students from 2 colleges of pharmacy were invited to participate in a survey about experiences and perceptions of pimping...
January 1, 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28627970/genome-wide-codon-usage-profiling-of-ocular-infective-chlamydia-trachomatis-serovars-and-drug-target-identification
#3
Anupriya Sadhasivam, Umashankar Vetrivel
Chlamydia trachomatis (C.t) is a gram-negative obligate intracellular bacteria and is a major causative of infectious blindness and sexually transmitted diseases. Among the varied serovars of this organism, A, B & C are reported as prominent ocular pathogens. Genomic studies of these strains shall aid in deciphering potential drug targets and genomic influence on pathogenesis. Hence, in this study we performed deep statistical profiling of codon usage in these serovars. The overall base composition analysis reveals that these serovars are over biased to AU than GC...
June 19, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28626011/effects-of-ventral-striatum-lesions-on-stimulus-versus-action-based-reinforcement-learning
#4
Kathryn M Rothenhoefer, Vincent D Costa, Ramón Bartolo, Raquel Vicario-Feliciano, Elisabeth A Murray, Bruno B Averbeck
Learning the values of actions versus stimuli may depend on separable neural circuits. In the current study, we evaluated ventral striatum (VS) lesioned macaques' performance on a two-arm bandit task that had randomly interleaved blocks of stimulus based and action based reinforcement learning (RL). Compared to controls, monkeys with VS lesions had deficits in learning to select rewarding images but not rewarding actions. We used a RL model to quantify learning and choice consistency and found that, in stimulus based RL, the VS lesion monkeys were more influenced by negative feedback and had lower choice consistency than controls...
June 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28624112/opposing-roles-of-rapid-dopamine-signaling%C3%A2-across-the-rostral-caudal-axis-of%C3%A2-the%C3%A2-nucleus-accumbens-shell-in-drug-induced-negative-affect
#5
Seth W Hurley, Elizabeth A West, Regina M Carelli
BACKGROUND: Negative reinforcement theories of drug addiction posit that addicts use drugs to alleviate negative mood states. In a preclinical model developed in our laboratory, rats exhibit negative affect to a normally rewarding taste cue when it predicts impending but delayed cocaine. The emergence of this state is accompanied by a reduction in dopamine concentration in the rostral nucleus accumbens shell. However, the rostral and caudal regions of the shell have been implicated in promoting opposing appetitive and aversive states, respectively...
May 11, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28623607/presenilin-1-targeted-morpholino-induces-cognitive-deficits-increased-brain-a%C3%AE-1-42-and-decreased-synaptic-marker-psd-95-in-zebrafish-larvae
#6
Laura Roesler Nery, Natalia Eltz Silva, Raphaela Fonseca, Monica Ryff Moreira Vianna
Presenilins are transmembrane proteases required for the proteolytic cleavage of Notch and also act as the catalytic core of the γ-secretase complex, which is responsible for the final cleavage of the amyloid precursor protein into Amyloid-β (Aβ) peptides of varying lengths. Presenilin-1 gene (psen1) mutations are the main cause of early-onset autosomal-dominant Familial Alzheimer Disease. Elucidating the roles of Presenilin-1 and other hallmark proteins involved in Alzheimer's disease is crucial for understanding the disease etiology and underlying molecular mechanisms...
June 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28617373/-a-psychological-content-of-social-phobia-syndrome
#7
O A Sagalakova, D V Truevtsev, I Ya Stoyanova
AIM: To perform a psychological analysis of social phobia syndrome. The subject area of research is the structure of mental activity and behavior in social activity. MATERIAL AND METHODS: The study included 32 patients with symptoms of social phobia (ICD-10 F40.1) and 29 healthy people (controls). A complex of psychological methods (questionnaires; pathopsychological experiment) was used. RESULTS AND CONCLUSION: Early maladaptive schemes and a tendency to mental rigidity can be a premorbid basis of the syndrome...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28614387/global-sensing-of-the-antigenic-structure-of-herpes-simplex-virus-gd-using-high-throughput-array-based-spr-imaging
#8
Tina M Cairns, Noah T Ditto, Huan Lou, Benjamin D Brooks, Doina Atanasiu, Roselyn J Eisenberg, Gary H Cohen
While HSV-2 typically causes genital lesions, HSV-1 is increasingly the cause of genital herpes. In addition, neonatal HSV infections are associated with a high rate of mortality and HSV-2 may increase the risk for HIV or Zika infections, reinforcing the need to develop an effective vaccine. In the GSK Herpevac trial, doubly sero-negative women were vaccinated with a truncated form of gD2 [gD2(284t)], then examined for anti-gD serum titers and clinical manifestations of disease. Surprisingly, few vaccinees were protected against genital HSV-2 but 86% were protected from genital HSV-1...
June 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28596644/highlights-of-multiple-myeloma-at-the-annual-meeting-of-american-society-of-hematology-2016
#9
REVIEW
Nidhi Tandon, Shaji K Kumar
This review discusses the landmark studies in the field of multiple myeloma (MM) which were presented at American society of hematology annual meeting, 2016. There were contrary results from two large phase III trials (one from US and one from Europe) that evaluated the role of additional interventions like tandem autologous transplant (ASCT) and consolidation after induction therapy followed by ASCT in newly diagnosed MM (NDMM) patients, but there were critical differences between the two studies. Novel agents like carfilzomib and ixazomib proved to be of benefit when used as induction and post ASCT consolidation and maintenance in NDMM...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28595502/the-importance-of-trait-emotional-intelligence-and-feelings-in-the-prediction-of-perceived-and-biological-stress-in-adolescents-hierarchical-regressions-and-fsqca-models
#10
Lidón Villanueva, Inmaculada Montoya-Castilla, Vicente Prado-Gascó
The purpose of this study is to analyse the combined effects of trait emotional intelligence (EI) and feelings on healthy adolescents' stress. Identifying the extent to which adolescent stress varies with trait emotional differences and the feelings of adolescents is of considerable interest in the development of intervention programmes for fostering youth well-being. To attain this goal, self-reported questionnaires (perceived stress, trait EI and positive/negative feelings) and biological measures of stress (hair cortisol concentrations, HCC) were collected from 170 adolescents (12-14 years old)...
June 8, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28594633/the-influence-of-emotional-state-on-learning-from-reward-and-punishment-in-borderline-personality-disorder
#11
Katherine L Dixon-Gordon, Matthew T Tull, Leor M Hackel, Kim L Gratz
Despite preliminary evidence that individuals with borderline personality disorder (BPD) demonstrate deficits in learning from corrective feedback, no studies have examined the influence of emotional state on these learning deficits in BPD. This laboratory study examined the influence of negative emotions on learning among participants with BPD (n = 17), compared with clinical (past-year mood/anxiety disorder; n = 20) and healthy (n = 23) controls. Participants completed a reinforcement learning task before and after a negative emotion induction...
June 8, 2017: Journal of Personality Disorders
https://www.readbyqxmd.com/read/28592670/tetranychus-urticae-mites-do-not-mount-an-induced-immune-response-against-bacteria
#12
Gonçalo Santos-Matos, Nicky Wybouw, Nelson E Martins, Flore Zélé, Maria Riga, Alexandre B Leitão, John Vontas, Miodrag Grbić, Thomas Van Leeuwen, Sara Magalhães, Élio Sucena
The genome of the spider mite Tetranychus urticae, a herbivore, is missing important elements of the canonical Drosophila immune pathways necessary to fight bacterial infections. However, it is not known whether spider mites can mount an immune response and survive bacterial infection. In other chelicerates, bacterial infection elicits a response mediated by immune effectors leading to the survival of infected organisms. In T. urticae, infection by either Escherichia coli or Bacillus megaterium did not elicit a response as assessed through genome-wide transcriptomic analysis...
June 14, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28591348/informal-and-paid-care-for-brazilian-older-adults-national-health-survey-2013
#13
Maria Fernanda Lima-Costa, Sérgio Viana Peixoto, Deborah Carvalho Malta, Célia Landmann Szwarcwald, Juliana Vaz de Melo Mambrini
OBJECTIVE: To describe the prevalence and sociodemographic factors associated with informal and paid care for Brazilian older adults with functional limitations. METHODS: Of the 23,815 participants of the National Health Survey aged 60 or older, 5,978 reported needing help to perform activities of daily living and were included in this analysis. The dependent variable was the source of care, categorized as exclusively informal (unpaid), exclusively formal (paid), mixed or none...
June 1, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28590831/effects-of-testosterone-administration-on-liver-structure-and-function-in-aging-rats
#14
Ricardo Aparecido Baptista Nucci, Ana Caroline de Souza Teodoro, Walter Krause Neto, Wellington de Assis Silva, Romeu Rodrigues de Souza, Carlos Alberto Anaruma, Eliane Florencio Gama
Aging males have a decrease in testosterone levels, by which the testosterone treatment may influence in a negatively fashion the liver. AIM: This study aimed to analyze the effects of aging with or without testosterone administration on the liver components of animals. METHODS: Wistar rats were divided into three groups: 20 months' group (G20), 24 months' group (G24), group treated with testosterone for 16 weeks (GT). All groups were sacrificed at 24 months except for G20 that was sacrificed at 20 months...
June 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28589535/low-hdl-levels-in-sepsis-versus-trauma-patients-in-intensive-care-unit
#15
Sébastien Tanaka, Julien Labreuche, Elodie Drumez, Anatole Harrois, Sophie Hamada, Bernard Vigué, David Couret, Jacques Duranteau, Olivier Meilhac
BACKGROUND: The protective cardiovascular effect of high-density lipoproteins (HDLs) is considered to chiefly rely on reverse cholesterol transport from peripheral tissues back to the liver. However, HDL particles display pleiotropic properties, including anti-inflammatory, anti-apoptotic or antioxidant functions. Some studies suggest that HDL concentration decreases during sepsis, and an association was reported between low HDL levels and a poor outcome. Like sepsis, trauma is also associated with a systemic inflammatory response syndrome...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28588985/how-did-rapid-scale-up-of-hiv-services-impact-on-workplace-and-interpersonal-trust-in-zambian-primary-health-centres-a-case-based-health-systems-analysis
#16
Stephanie M Topp, Julien M Chipukuma
BACKGROUND: In sub-Saharan Africa, large amounts of funding continue to be directed towards HIV-specific care and treatment, often with claims of 'health system strengthening' effect. Such claims rarely account for the impact on human relationships and decisions that are core to functional health systems. This research examined how establishment of externally funded HIV services influenced trusting relationships in Zambian health centres. METHODS: An in-depth, multicase study included four health centres selected for urban, peri-urban and rural characteristics...
November 2016: BMJ Global Health
https://www.readbyqxmd.com/read/28587607/design-of-a-syndemic-based-intervention-to-facilitate-care-for-men-who-have-sex-with-men-with-high-risk-behaviour-the-syn-bas-in-randomized-controlled-trial
#17
Roel C A Achterbergh, Jannie J van der Helm, Wim van den Brink, Henry J C de Vries
BACKGROUND: Men who have sex with men (MSM) constitute a risk group for sexual transmitted infections (STIs), including HIV. Despite counselling interventions, risk behaviour remains high. Syndemic theory holds that psychosocial problems often co-occur, interact and mutually reinforce each other, thereby increasing high risk behaviours and co-occurring diseases. Therefore, if co-occurring psychosocial problems were assessed and treated simultaneously, this might decrease high risk behaviour and disease...
June 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28581464/idarubicin-intensified-haploidentical-hsct-with-gvhd-prophylaxis-of-atg-and-basiliximab-provides-comparable-results-to-sibling-donors-in-high-risk-acute-leukemia
#18
R Zhang, W Shi, H-F Wang, Y You, Z-D Zhong, W-M Li, C Zhang, X Lu, Y-D Wang, P Zheng, J Fang, M Hong, Q-L Wu, L-H Xia
We designed a novel haploidentical hematopoietic stem cell transplantation (haplo-HSCT) system using idarubicin (IDA) intensified conditioning regimens and combination of antithymocyte globulin and basiliximab for GvHD prophylaxis. The outcomes of 110 high-risk acute leukemia patients undergoing haplo-HSCT were compared with 69 contemporaneous high-risk patients receiving HLA-matched sibling transplantation using uniform IDA-intensified regimens. The relapse incidence of haplo-HSCT was 23.4%, and 3-year overall survival (OS) and disease-free survival (DFS) achieved 62...
June 5, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28578590/the-impact-of-prior-activity-history-on-the-influence-of-restricted-repetitive-behaviors-on-socialization-for-children-with-high-functioning-autism
#19
Robert L Koegel, Kelsey Oliver, Lynn K Koegel
Research has demonstrated that incorporating restricted interests of an individual with autism into recess activities is effective at increasing socialization with typically developing peers. However, certain activity contexts may alter the reinforcing influence of the restricted repetitive behaviors (RRBs) depending on an individual's history in that activity. Using an alternating treatment design, this study examined whether an individual's history with an activity affected socialization. RRBs were embedded into activities with a reported positive history (i...
June 1, 2017: Behavior Modification
https://www.readbyqxmd.com/read/28576033/insight-into-cytotoxicity-of-mg-nanocomposites-using-mtt-assay-technique
#20
Tiong Hou Damien Ong, Na Yu, Ganesh Kumar Meenashisundaram, Benoit Schaller, Manoj Gupta
In the present study, Young's modulus measurements and indirect cytotoxicity test were performed on Mg (0.97, 1.98, 2.5) vol% TiO2, Mg (0.58, 0.97, 1.98) vol% TiC, and Mg (0.58, 0.97, 1.98) vol% TiN, synthesized using the Disintegrated Melt Deposition technique to determine the cytotoxicity of low volume nano-particulate reinforcement on magnesium. The results of the indirect MTT assay on Day 3 and Day 5 indicate that 2.5vol% TiO2, TiC and TiN has little effect on the cytotoxicity when added as low volume fraction reinforcement to magnesium...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
keyword
keyword
27312
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"