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Positive reciprocity

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https://www.readbyqxmd.com/read/28428199/experimental-insights-on-darwin-s-cross-promotion-hypothesis-in-tristylous-purple-loosestrife-lythrum-salicaria
#1
Joana Costa, Sílvia Castro, João Loureiro, Spencer C H Barrett
PREMISE OF THE STUDY: Darwin proposed that the reciprocal arrangement of anthers and stigmas in heterostylous plants promotes cross-pollination through pollen segregation on pollinators' bodies. The floral tube in most heterostylous species constrains the feeding posture of pollinators determining the site of contact with sex organs located at different heights within a flower. Here, we evaluate Darwin's hypothesis in tristylous Lythrum salicaria, a species with a partially tubular corolla, and examine the extent to which the location of sex organs within a flower influence compatible and incompatible pollination...
April 20, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28426356/focus-group-findings-of-smoking-onset-among-male-youth-in-china
#2
Vivian C Sheer, Chang Molly Mao, Yi-Ru Regina Chen
BACKGROUND: Adolescence is associated with smoking initiation among men in China. The lack of qualitative studies using Chinese adolescent samples can pose challenges to enacting effective smoking prevention messages that resonate with male Chinese teenagers' thoughts, needs, and wishes. OBJECTIVE: This focus group study was designed to obtain in-depth contextual information on early smoking among male teenagers in China. METHODS: Twenty focus groups of 7-10 male students from vocational and junior colleges (N = 165) were conducted, approximately half in Shanxi and half in Guangdong...
June 7, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28420710/reciprocal-proteasome-mediated-degradation-of-pifs-and-hfr1-underlying-photomorphogenic-development-in-arabidopsis
#3
Xiaosa Xu, Praveen Kumar Kathare, Vinh Ngoc Pham, Qingyun Bu, Andrew Nguyen, Enamul Huq
The phytochrome-mediated regulation of photomorphogenesis under red and far-red light conditions involves both positive and negatively acting factors. The positively acting factors (e.g., HY5/HFR1/LAF1 and others) are degraded in the dark to prevent photomorphogenesis. By contrast, the negatively acting factors (e.g., PIFs) are degraded in response to light to promote photomorphogenesis. Here we show that the negatively acting factor, PIF1 is also degraded in the dark by direct heterodimerization with the positively acting factor, HFR1...
April 18, 2017: Development
https://www.readbyqxmd.com/read/28419152/the-disadvantages-of-being-a-hybrid-during-drought-a-combined-analysis-of-plant-morphology-physiology-and-leaf-proteome-in-maize
#4
Dana Holá, Monika Benešová, Lukáš Fischer, Daniel Haisel, František Hnilička, Helena Hniličková, Petr L Jedelský, Marie Kočová, Dagmar Procházková, Olga Rothová, Lenka Tůmová, Naďa Wilhelmová
A comparative analysis of various parameters that characterize plant morphology, growth, water status, photosynthesis, cell damage, and antioxidative and osmoprotective systems together with an iTRAQ analysis of the leaf proteome was performed in two inbred lines of maize (Zea mays L.) differing in drought susceptibility and their reciprocal F1 hybrids. The aim of this study was to dissect the parent-hybrid relationships to better understand the mechanisms of the heterotic effect and its potential association with the stress response...
2017: PloS One
https://www.readbyqxmd.com/read/28409325/velocity-field-visualization-in-usp-dissolution-apparatus-3-using-particle-image-velocimetry
#5
Satish Perivilli, Richard Prevost, Erika Stippler
PURPOSE: The hydrodynamics in USP dissolution apparatus 3, at five different dip rates, was characterized by analyzing phase-averaged velocity fields obtained using Particle Image Velocimetry (PIV). METHODS: Phase locked 2 Component-PIV (2C-PIV) measurements were recorded on a typical dissolution apparatus 3 configuration with a black painted tablet fixed at the center of the bottom porous screen of the reciprocating cylinder. A trigger mechanism was employed to capture data over 12 phase positions for each reciprocation cycle...
April 13, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28407460/depressive-symptoms-and-their-interactions-with-emotions-and-personality-traits-over-time-interaction-networks-in-a-psychiatric-clinic
#6
Laura N Semino, Josef Marksteiner, Gernot Brauchle, Erik Danay
Objective: Associations between depression, personality traits, and emotions are complex and reciprocal. The aim of this study is to explore these interactions in dynamical networks and in a linear way over time depending on the severity of depression. Methods: Participants included 110 patients with depressive symptoms (DSM-5 criteria) who were recruited between October 2015 and February 2016 during their inpatient stay in a general psychiatric hospital in Hall in Tyrol, Austria...
April 13, 2017: Primary Care Companion to CNS Disorders
https://www.readbyqxmd.com/read/28406659/does-gratitude-enhance-prosociality-a-meta-analytic-review
#7
Lawrence K Ma, Richard J Tunney, Eamonn Ferguson
Theoretical models suggest that gratitude is linked to increased prosociality. To date, however, there is a lack of a comprehensive quantitative synthesis of results to support this claim. In this review we aimed to (a) examine the overall strength of the association between gratitude and prosociality, and (b) identify the theoretical and methodological variables that moderate this link. We identified 252 effect sizes from 91 studies across 65 papers-(Total N = 18,342 participants). The present meta-analysis revealed a statistically significant, and moderate positive correlation between gratitude and prosociality (r = ...
April 13, 2017: Psychological Bulletin
https://www.readbyqxmd.com/read/28404930/microrna-regulation-of-progesterone-receptor-in-breast-cancer
#8
Avital Gilam, Ayelet Shai, Itamar Ashkenazi, Liat Appel Sarid, Assi Drobot, Amitai Bickel, Noam Shomron
Hormone receptor status is of significant value when deciding on anti-estrogenic adjuvant therapy for breast cancer tumors. However, while estrogen receptor (ER) regulation was intensively studied, the regulation of progesterone receptor (PR) levels has not been extensively investigated. MicroRNAs (miRNAs, miRs) are post-transcriptional negative regulators of gene expression involved in diverse cellular processes. The aim of this study was to identify miRNAs that regulate PR in breast cancer.We mapped potential miRNA binding sites for miR-181a, miR-23a and miR-26b on PR mRNA and demonstrated a direct regulation of PR by these three miRNAs by in-vitro Luciferase binding assays...
February 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401587/valuation-of-life-as-outcome-and-mediator-of-a-depression-intervention-for-older-african-americans-the-get-busy-get-better-trial
#9
Laura N Gitlin, Jeanine M Parisi, Jin Huang, Laraine Winter, David L Roth
OBJECTIVE: Previously, we showed that Get Busy Get Better (GBGB), a 10-session multicomponent home-based, behavioral intervention, reduced depressive symptom severity in older African Americans. As appraising the value of life is associated with depressive symptoms, this study examined whether GBGB enhanced positive appraisals of life and if, in turn, this mediated treatment effects on depressive symptoms. METHODS: Data were from a single-blind parallel randomized trial involving 208 African Americans (≥55 years old) with depressive symptoms (Patient Health Questionnaire, PHQ-9 ≥5)...
April 12, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28399463/distraction-or-cognitive-overload-using-modulations-of-the-autonomic-nervous-system-to-discriminate-the-possible-negative-effects-of-advanced-assistance-system
#10
D Ruscio, A J Bos, M R Ciceri
The interaction with Advanced Driver Assistance Systems has several positive implications for road safety, but also some potential downsides such as mental workload and automation complacency. Malleable attentional resources allocation theory describes two possible processes that can generate workload in interaction with advanced assisting devices. The purpose of the present study is to determine if specific analysis of the different modalities of autonomic control of nervous system can be used to discriminate different potential workload processes generated during assisted-driving tasks and automation complacency situations...
April 8, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28398134/-i-told-her-this-is-your-life-relationship-dynamics-partner-support-and-adherence-to-antiretroviral-therapy-among-south-african-couples
#11
Amy Conroy, Anna Leddy, Mallory Johnson, Thulani Ngubane, Heidi van Rooyen, Lynae Darbes
Despite the important role of social relationships for health and wellbeing, little is known about how primary partners affect adherence to HIV care and treatment. We qualitatively explored how relationship dynamics and partner support influence adherence among couples from KwaZulu-Natal, South Africa. Twenty-four heterosexual couples with at least one HIV-positive partner completed semi-structured interviews on topics including relationship dynamics (intimacy or emotional closeness, communication, violence), experiences with HIV care and treatment and HIV-related social support...
April 11, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28397338/glycogen-synthase-kinase-3-inhibitors-suppress-the-ar-v7-mediated-transcription-and-selectively-inhibit-cell-growth-in-ar-v7-positive-prostate-cancer-cells
#12
Daisuke Nakata, Ryokichi Koyama, Kazuhide Nakayama, Satoshi Kitazawa, Tatsuya Watanabe, Takahito Hara
BACKGROUND: Recent evidence suggests that androgen receptor (AR) splice variants, including AR-V7, play a pivotal role in resistance to androgen blockade in prostate cancer treatment. The development of new therapeutic agents that can suppress the transcriptional activities of AR splice variants has been anticipated as the next generation treatment of castration-resistant prostate cancer. METHODS: High-throughput screening of AR-V7 signaling inhibitors was performed using an AR-V7 reporter system...
April 10, 2017: Prostate
https://www.readbyqxmd.com/read/28395535/the-experience-of-attempting-to-return-to-work-following-spinal-cord-injury-a-systematic-review-of-the-qualitative-literature
#13
Gillean Hilton, Carolyn Unsworth, Gregory Murphy
PURPOSE: This review sought to answer the question "What are the barriers and facilitators influencing people's experience of return to work following spinal cord injury?" METHODS: Studies that met the selection criteria were identified, presented and critically appraised using National Institute for Health and Care Excellence guidelines. Thematic synthesis was completed with studies possessing strong methodological rigor. Synthesis and interpretation involved three stages; coding of primary data; development of descriptive themes reflective of the primary data; and establishment of analytical themes to answer the review question...
April 11, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28395529/mother-child-interactions-in-young-children-with-excessive-physical-aggression-and-in-typically-developing-young-children
#14
Nadine Urbain-Gauthier, Jaqueline Wendland
BACKGROUND: Among the multiple risk factors, the emergence of conduct problems in young children may be linked to harsh parenting and child's temperamental difficulties, leading to a reciprocal early discordant relationship. Little is known about the characteristics of early parent-child interactions in young children with physical aggression. OBJECTIVE: The purpose of the current study was to evaluate the characteristics of mother-child interactions in dyads referred for excessive physical aggression in young children under 5 years of age compared to mother-child interactions in typically developing young children...
April 1, 2017: Clinical Child Psychology and Psychiatry
https://www.readbyqxmd.com/read/28391279/perceived-control-and-aging-a-mini-review-and-directions-for-future-research
#15
Stephanie A Robinson, Margie E Lachman
This brief review on perceived control and aging is organized according to 3 perspectives of research involving description, explanation, and modification. An extensive body of literature has utilized cross-sectional and correlational methods to describe the sociodemographic variations and outcomes associated with perceived control. This work has focused on differences in perceived control as a function of age, sex, education, socioeconomic status, and culture and has identified positive associations with many aging-related outcomes involving health and well-being...
April 8, 2017: Gerontology
https://www.readbyqxmd.com/read/28388976/concept-development-of-nursing-presence-application-of-schwartz-barcott-and-kim-s-hybrid-model
#16
Fatemeh Mohammadipour, Foroozan Atashzadeh-Shoorideh, Soroor Parvizy, Meimanat Hosseini
PURPOSE: Although nursing presence is a foundation for professional nursing practice and has known positive outcomes such as patient satisfaction and recovery; it is not well known. The ambiguity surrounding how to define nursing presence has challenged its evaluation and education. Therefore, in an attempt to discover attributes of this underdeveloped concept and studying it in a new context, concept development is essential. The purpose of this study was to clarify the concept of nursing presence through concept development, to produce a tentative definition of this subjective concept in clinical practice...
March 2017: Asian Nursing Research
https://www.readbyqxmd.com/read/28383623/never-too-late-to-be-anxious-validation-of-the-geriatric-anxiety-inventory-italian-version
#17
S Ferrari, M S Signorelli, F Cerrato, L Pingani, M Massimino, S Valente, M Forlani, P Bonasegla, E Arcidiacono, D De Ronchi, M Rigatelli, E Aguglia, A R Atti
AIM: The aim of this work was to validate the Italian version of GAI (GAI-It) and its short form (GAI-It SF) in an over 65-population. METHODS: In 3 recruitment areas across Italy, two raters reciprocally blind to results assessed eligible subjects; a semi-structured diagnostic clinical interview was performed by a psychiatrist. RESULTS: Among the 76 enrolled subjects (mean age 72.7±6.8 years), anxiety symptoms were very common: 69.7% (moderate/ severe HADS-Anxiety), 76...
March 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28381290/the-mothering-experience-of-women-with-fgm-c-raising-uncut-daughters-in-ivory-coast-and-in-canada
#18
Sophia Koukoui, Ghayda Hassan, Jaswant Guzder
BACKGROUND: While Female Genital Cutting (FGM/C) is a deeply entrenched cultural practice, there is now mounting evidence for a gradual decline in prevalence in a number of geographical areas in Africa and following migration to non-practicing countries. Consequently, there is now a growing number of women with FGM/C who are raising 'uncut' daughters. This study used a qualitative methodology to investigate the experience of women with FGM/C raising daughters who have not been subjected to the ritual...
April 5, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28373141/spine-hip-relations-add-understandings-to-the-pathophysiology-of-femoro-acetabular-impingement-a-systematic-review
#19
REVIEW
C Rivière, A Hardijzer, J-Y Lazennec, P Beaulé, S Muirhead-Allwood, J Cobb
Relationship between hip pathoanatomy and symptomatic FAI has been reported to be weak. This is explained by the reciprocal interaction between proximal femur and acetabular anatomies, but potentially also by the individual spine-hip relations (SHR). The key-answer for a complete understanding of the pathophysiology of FAI might lie in the comprehension of the SHRs, which have not yet been fully addressed. Therefore we conducted a systematic review to answer the subsequent questions: Is there any evidence of a relationship between FAI and (1) sagittal pelvic kinematics, (2) pelvic incidence, and (3) types of SHRs? A systematic review of the existing literature utilizing PubMed and Google search engines was performed in December 2016...
April 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28367131/infantile-anorexia-and-co-parenting-a-pilot-study-on-mother-father-child-triadic-interactions-during-feeding-and-play
#20
Loredana Lucarelli, Massimo Ammaniti, Alessio Porreca, Alessandra Simonelli
Infantile Anorexia (IA), defined by the Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood Revised (DC: 0-3R, Zero To Three, 2005), occurs when the child (a) refuses to eat adequate amounts of food for at least 1 month, and shows growth deficiency, (b) does not communicate hunger and lacks interest in food, and (c) the child's food refusal does not follow a traumatic event and is not due to an underlying medical illness. IA usually emerges during the transition to self-feeding, when the child issues of autonomy are played out daily in the feeding situation...
2017: Frontiers in Psychology
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