Bacterial pathogens encode suppressors of RNA-mediated silencing

Bacterial suppressors of silencing that inhibit multiple steps of plant microRNA biogenesis and function have recently been identified

Sustainable Approaches to Food Production

Permaculture is a system of ecological design that aims to create more sustainable communities: its principles reinforce to participants understanding patterns of nature, learning food production, managing water catchment and storage, utilizing renewable energy, and building communities. A permaculture system is the exemplary sustainable approach to food production systems that the Campus Garden aims to bring to the University at Buffalo. The belief is that through the building of this garden, we have created a community at UB that has a heightened understanding of where its food comes from (fair share), how that food affects individuals’ bodies (people care), and how food production affects the environment (earth care). With the framework of “Grow better, not bigger” in mind, the ultimate goal of this research is to double the amount of food production to forty-pounds, in the same 20’x20’ plot of the UB Campus Garden. To advance the Garden’s vision and further emphasize the importance of sustainability, it is our goal to explore different gardening techniques for implementation during the growing season. The four components to this alternative growing research include: 1) Community engagement and education; 2) Permaculture and companion planning; 3) Container gardening; and, 4) Vertical gardening. This research allows us to utilize the Garden’s space as best possible and be a representation to the campus community of how food production can occur despite space constraints. Wholly, we aim to educate individuals on alternative gardening techniques, prove that implementation of these techniques is plausible at other sites, and expand the campus community’s understanding of the importance of food production processes

Associations between Loneliness and Cancer Patients’ Pain and Fatigue

poster abstractIntroduction: Pain and fatigue occur at higher rates in cancer patients than in the general population. One study found that loneliness predicted both pain and fatigue in cancer patients; however, the study only focused on patients with breast or colon cancer. The goal of the current study is to examine whether loneliness is associated with pain and fatigue in a sample of patients with various cancer types, including more rare diagnoses. We hypothesized that loneliness would be positively correlated with pain and fatigue, controlling for demographic and medical characteristics. Methods: Participants (N=44) were 60 years old (SD=12) on average, 68% Caucasian, and 59% female. All participants had received treatment for cancer at the Indiana University Simon Cancer Center or another Indiana University Hospital since 2013. Participants were recruited from the Indiana Tumor Registry, and after consenting, they were mailed a survey to complete at home that included measures of loneliness, pain, and fatigue. To test our hypothesis, we computed correlations between loneliness and each symptom (i.e., pain and fatigue), controlling for age, gender, and time since diagnosis. Results: As hypothesized, we found a large, positive correlation between loneliness and fatigue (r =0.51, p=0.001), controlling for demographic and medical characteristics. In addition, loneliness was positively correlated with pain, but this result fell just short of statistical significance (r=0.28, p=0.09). Conclusions: Results from this study suggest that greater loneliness is associated with greater fatigue in cancer patients, consistent with the results of one prior study. Although the association between loneliness and pain was more modest, it may reach statistical significance as the study sample size increases. If future longitudinal research shows that greater loneliness predicts cancer patients’ pain and fatigue, it would suggest that interventions to reduce loneliness may also reduce their physical symptoms

RNA silencing in plants: Flash report!

Earlier this year plant scientists met in Santa Fe, New Mexico at the Keystone Symposium "RNA Silencing Mechanisms in Plants". Sessions included small RNA biogenesis and signalling, development and stress responses, small RNA-directed DNA methylation, and interaction with pathogens. This report highlights some of the prominent and recurring themes at the meeting and emerging arenas of future research.RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are

Relations of meaning in life and sense of coherence to distress in cancer patients: a meta-analysis

OBJECTIVE: Cancer patients report high rates of distress. The related constructs of meaning in life (MiL) and sense of coherence (SOC) have long been recognized as important factors in the psychological adjustment to cancer; however, both constructs' associations with distress have not been quantitatively reviewed or compared in this population. Informed by Park's integrated meaning-making model and Antonovsky's salutogenic model, the goals of this meta-analysis were the following: (1) to compare the strength of MiL-distress and SOC-distress associations in cancer patients; and (2) to examine potential moderators of both associations (i.e., age, gender, ethnicity, religious affiliation, disease stage, and time since diagnosis). METHODS: A literature search was conducted using electronic databases. Overall, 62 records met inclusion criteria. The average MiL-distress and SOC-distress associations were quantified as Pearson's r correlation coefficients and compared using a one-way ANOVA. RESULTS: Both MiL and SOC demonstrated significant, negative associations with distress (r = -0.41, 95% CI: -0.47 to -0.35, k = 44; and r = -0.59, 95% CI: -0.67 to -0.51, k = 18, respectively). Moreover, the MiL-distress association was significantly smaller than the SOC-distress association (Qb  = 10.42, df = 1, p < 0.01). Neither association varied by the tested moderators. CONCLUSIONS: Findings provide support for the clinical relevance of MiL and SOC across demographic and medical subgroups of cancer patients. The strength of the SOC-distress association suggests that incorporating aspects of SOC (e.g., the perceived manageability of life circumstances) into meaning-centered interventions may improve their effectiveness for distressed cancer patients

A meta-analysis of the relationship between social constraints and distress in cancer patients

Social constraints on cancer-related disclosure have been associated with increased distress among cancer patients. The goals of this meta-analysis were: (1) to quantify the average strength of the relationships between social constraints and general and cancer-specific distress in cancer patients; and (2) to examine potential moderators of these relationships. A literature search was conducted using electronic databases, and 30 studies met inclusion criteria. Moderate, significant relationships were found between social constraints and both general distress (r = 0.37, 95 % CI 0.31-0.43) and cancer-specific distress (r = 0.37, 95 % CI 0.31-0.44). The relationship between social constraints and cancer-specific distress was stronger for studies of patients who, on average, had been diagnosed more recently. Relationships between social constraints and both general and cancer-specific distress did not vary by age or gender. Findings suggest that social constraints may be important to target in interventions to reduce distress in cancer patients, especially those who have been recently diagnosed

PolIVb influences RNA-directed DNA methylation independently of its role in siRNA biogenesis.

Comparative StudyJournal ArticleResearch Support, Non-U.S. Gov'tThis article contains supporting information online at www.pnas.org/cgi/content/full/0709632105/DC1. Freely available online through the PNAS open access option. © 2008 by The National Academy of Sciences of the USADNA-dependent RNA polymerase (Pol)IV in Arabidopsis exists in two isoforms (PolIVa and PolIVb), with NRPD1a and NRPD1b as their respective largest subunits. Both isoforms are implicated in production and activity of siRNAs and in RNA-directed DNA methylation (RdDM). Deep sequence analysis of siRNAs in WT Arabidopsis flowers and in nrpd1a and nrpd1b mutants identified >4,200 loci producing siRNAs in a PolIV-dependent manner, with PolIVb reinforcing siRNA production by PolIVa. Transposable element identity and pericentromeric localization are both features that predispose a locus for siRNA production via PolIV proteins and determine the extent to which siRNA production relies on PolIVb. Detailed analysis of DNA methylation at PolIV-dependent loci revealed unexpected deviations from the previously noted association of PolIVb-dependent siRNA production and RdDM. Notably, PolIVb functions independently in DNA methylation and siRNA generation. Additionally, we have uncovered siRNA-directed loss of DNA methylation, a process requiring both PolIV isoforms. From these findings, we infer that the role of PolIVb in siRNA production is secondary to a role in chromatin modification and is influenced by chromatin context

Diagnostic Error: A Patient Safety Imperative

Objectives Develop a working definition of the term “diagnostic error” Identify system and cognitive factors that contribute to risk for diagnostic error Describe areas of opportunity for improvement to reduce the risk of diagnostic error Identify the key objectives of the Pennsylvania Patient Safety Authority’s Center of Excellence for Improving Diagnosis Summary Diagnostic errors are a complex and often overlooked problem in the field of patient safety. While various cognitive and system factors contribute to the problem, there are many opportunities for improvement. This session explores how the Pennsylvania Patient Safety Authority’s newly formed Center of Excellence will work to improve diagnosis in Pennsylvania. Presentation: 1:00:3

Cancer-related loneliness mediates the relationships between social constraints and symptoms among cancer patients

Cancer patients have high rates of persistent and disabling symptoms. Evidence suggests that social constraints (e.g., avoidance and criticism) negatively impact symptoms, but pathways linking these variables have yet to be identified. This study examined whether cancer-related loneliness (i.e., feeling socially disconnected related to having cancer) mediated the relationships between social constraints and symptoms (i.e., pain interference, fatigue, sleep disturbance, and cognitive complaints) in patients with various cancers (N = 182). Patients (51% female, mean age = 59) were recruited from the Indiana Cancer Registry and completed questionnaires assessing social constraints, cancer-related loneliness, and symptoms. Structural equation modeling was used to evaluate the hypothesized relationships among variables. The model demonstrated good fit. Consistent with our hypothesis, cancer-related loneliness mediated the relationships between social constraints and each symptom. Findings suggest that addressing cancer-related loneliness in symptom management interventions may mitigate the negative impact of social constraints on outcomes

Caregiving experiences predict changes in spiritual well-being among family caregivers of cancer patients

OBJECTIVE: Although enhanced spiritual well-being has been linked to positive mental health outcomes among family caregivers of cancer patients, little is known regarding predictors of spiritual well-being in this population. The current study aimed to examine caregiving experiences as predictors of change in family caregivers' spiritual well-being during the initial months following the patient's cancer diagnosis. METHODS: Seventy family caregivers of newly diagnosed cancer patients (74% female, mean age = 59 years) participated in this longitudinal survey. Caregivers completed baseline questionnaires shortly before staying with the patient at an American Cancer Society Hope Lodge. Baseline questionnaires assessed caregiving experiences (i.e., self-esteem related to caregiving, family support for providing care, impact of caregiving on finances, and impact of caregiving on one's schedule). In addition, caregivers' spiritual well-being (i.e., meaning in life, peace, and faith) was assessed at baseline and 4-month follow-up. RESULTS: In univariate analyses, all caregiving experiences studied were associated with one or more aspects of spiritual well-being at 4-month follow-up. However, in the multivariate analysis, the only caregiving experience associated with aspects of spiritual well-being at 4-month follow-up was caregivers' perceptions of family support. Specifically, lack of family support was associated with lower levels of meaning and peace. CONCLUSIONS: Findings point to the importance of family support in facilitating the search for meaning and peace shortly after a loved one's cancer diagnosis and suggest that interventions targeting caregivers' support system may enhance their spiritual well-being