Late-Life Mate Selection: Dating Patterns in an Older Age Group

This exploratory study is a description of the older dater and his/her attitudes and perceptions about dating, a comparison within the same cohort of youthful and late-life dating and mate selection, and a description of the patterns of dating in the elder years. It is a non-random collection of interviews with 38 single men and women over the age of 59 in two counties in Utah. Older daters were found to have been married for much of their lives previous to dating. They perceived themselves to be in good health and financial condition and were fairly well-educated. They lived independently and had available and supportive family and friend relationships. They had good concepts of themselves and their ability to attract dating partners. Little resistance was perceived from significant others or the general public to their dating. Older people were not found to be more conservative in choosing mates than they were when they were young except in valuing romantic love, sexual attraction and interest in sex less now than during their youth. They also accepted divorce in potential partners and height differences more now than when they were young. They were less accepting now of poor financial conditions. The primary motive for dating and for remarriage in late life was to find companionship. Monogamous dating relationships were the norm. The primary functions of dating were friendship and sharing confidences. Dating partners were met most often through mutual acquaintances or during previous marriages. Dating format and activities for the elderly were similar to those of youthful daters, except at a slower pace

Moderators, mediators and nonspecific predictors of outcome after cognitive rehabilitation of executive functions in a randomised controlled trial

Moderators, mediators and nonspecific predictors of treatment after cognitive rehabilitation of executive functions in a randomised controlled trial Objective: To explore moderators, mediators and nonspecific predictors of executive functioning after cognitive rehabilitation in a randomised controlled trial, comparing Goal Management Training (GMT) with an active psycho-educative control-intervention, in patients with chronic acquired brain injury. Methods: Seventy patients with executive dysfunction were randomly allocated to GMT (n = 33) or control (n = 37). Outcome measures were established by factor-analysis and included cognitive executive complaints, emotional dysregulation and psychological distress. Results: Higher age and IQ emerged as nonspecific predictors. Verbal memory and planning ability at baseline moderated cognitive executive complaints, while planning ability at six-month follow-up mediated all three outcome measures. Inhibitory cognitive control emerged as a unique GMT specific mediator. A general pattern regardless of intervention was identified; higher levels of self-reported cognitive—and executive–symptoms of emotional dysregulation and psychological distress at six-month follow-up mediated less improvement across outcome factors. Conclusions: The majority of treatment effects were nonspecific to intervention, probably underscoring the variables’ general contribution to outcome of cognitive rehabilitation interventions. Interventions targeting specific cognitive domains, such as attention or working memory, need to take into account the patients’ overall cognitive and emotional self-perceived functioning. Future studies should investigate the identified predictors further, and also consider other predictor candidates

Landscape-Scale Geospatial Assessment of Open Pine and Natural Grassland Condition for Northern Bobwhite in the Gulf Coastal Plains and Ozarks

The National Bobwhite Conservation Initiative 2.0 (NBCI) suggests \u3e13 million acres of pine forests and \u3e600,000 acres of grasslands have high potential for northern bobwhite (Colinus virginianus) conservation in the Southeast. The Gulf Coastal Plains and Ozarks Landscape Conservation Cooperative (LCC) identifies northern bobwhite as one of 15 indicator species for open pine/woodland/savanna and grassland/prairie ecological systems, and describes specific habitat conditions considered desirable as measurable landscape endpoints in each system as part of an Integrated Science Agenda (ISA). The ISA suggests bobwhite are limited by the habitat characteristics associated with basal area and canopy cover in pine systems, and patch size, vegetation density, bare ground, shrub cover, and warm-season grass density in grassland systems across the 180 million acre LCC. We conducted Rapid Ecological Assessments (REAs) of pine and grassland systems to describe where, how much, and in what condition the desired habitat conditions exist for each system. Using endpoint threshold values, the best available geospatial data, and a dichotomous decision tree approach, the pine and grassland REAs assigned per-pixel Condition Index Values (CIV) for the entire LCC. Results indicate 46% of the 48 million acres of pine or mixed-pine hardwood forests are in patches \u3e600 acres with one other endpoint present, but only 0.2% (100,000 acres) reflect all desired open pine conditions. In the grassland system, 48% of the 32 million acres of grassland were characterized by the presence of at least one desired condition, with no areas meeting all desired conditions. In many cases, areas with high CIV scores overlap areas classified as high and medium land use opportunities in NBCI 2.0, suggesting continuity of these independent empirical and expert-driven assessments. Understanding the current condition of pine and grassland systems in concert with NBCI potential acreage targets can help refine management and population objectives in NBCI and LCC conservation planning

Genetic modifiers of cognitive maintenance among older adults.

ObjectiveIdentify genetic factors associated with cognitive maintenance in late life and assess their association with gray matter (GM) volume in brain networks affected in aging.MethodsWe conducted a genome-wide association study of ∼2.4 M markers to identify modifiers of cognitive trajectories in Caucasian participants (N = 7,328) from two population-based cohorts of non-demented elderly. Standardized measures of global cognitive function (z-scores) over 10 and 6 years were calculated among participants and mixed model regression was used to determine subject-specific cognitive slopes. "Cognitive maintenance" was defined as a change in slope of ≥ 0 and was compared with all cognitive decliners (slope < 0). In an independent cohort of cognitively normal older Caucasians adults (N = 122), top association findings were then used to create genetic scores to assess whether carrying more cognitive maintenance alleles was associated with greater GM volume in specific brain networks using voxel-based morphometry.ResultsThe most significant association was on chromosome 11 (rs7109806, P = 7.8 × 10(-8)) near RIC3. RIC3 modulates activity of α7 nicotinic acetylcholine receptors, which have been implicated in synaptic plasticity and beta-amyloid binding. In the neuroimaging cohort, carrying more cognitive maintenance alleles was associated with greater volume in the right executive control network (RECN; PFWE  = 0.01).ConclusionsThese findings suggest that there may be genetic loci that promote healthy cognitive aging and that they may do so by conferring robustness to GM in the RECN. Future work is required to validate top candidate genes such as RIC3 for involvement in cognitive maintenance

Genetic Structure of Northern Bobwhites in Northeast Mississippi and Southwest Tennessee

Precipitous declines in northern bobwhite (Colinus virginianus) populations across most of the natural range may increase susceptibility to genetic isolation, restrict gene flow among subpopulations, and exacerbate vulnerability to catastrophic stochastic processes. We characterized the level of genetic variability of 223 individual bobwhites representing 4 disjunct populations in northeast Mississippi and southwest Tennessee in 2002. Analyses at 8 microsatellite loci suggested observed heterozygosity was lower than expected but showed no significant heterozygosity excess. Estimates of FIS coefficients were positive in each subpopulation, but low overall, suggesting only minor loss in heterozygosity over the entire population. Gene diversity was high and genetic differentiation within and among subpopulations and isolation by distance effects were minimal, suggesting adequate levels of gene flow. We suggest, despite population losses, gene flow is maintained among subpopulations, which may reflect the bobwhite’s ability to disperse successfully in the agricultural landscape in this region. Maintenance of gene flow across seemingly inhospitable landscapes suggests focal area management directives may enhance population sustainability. Greater understanding of the genetic structure of northern bobwhite populations on larger geographic scales and across the species’ range is paramount to population recovery

Aquatic habitat changes within the channelized and impounded Arkansas River, Arkansas, USA

River-wide changes in morphologic character following channelization and impoundment alter the occurrence and distribution of surface water and available habitats for aquatic organisms. Quantifying patterns of creation, redistribution or disappearance of habitats at river-wide and decadal spatiotemporal scales can promote understanding regarding trajectories of different habitat types following alteration and prospects of direct habitat enhancement projects within altered alluvial rivers. Newly available remote-sensing tools and databases may improve detection of river-wide changes in habitat through time. We used a combination of remote-sensing data and generalized linear models to assess changes in surface water coverage from 1984 to 2015 among aquatic habitats of 496 km of the Arkansas River within Arkansas, USA. Changes through time in surface area of permanent and episodically inundated areas — and thus the availability of aquatic habitat — were variable along the river. Overall, the river lost a total 2.1% of permanent and 12.1% of episodic water surface area. The general trend of loss of off-main-channel habitat and increased coverage of permanent water along main-channel habitats may indicate a long-term transition (i.e. ramp-type disturbance) within areas of the Arkansas River where backwaters are transitioning to terrestrial environments, and habitat heterogeneity in the main channel is decreasing. As such, a decadal-scale change of channel form and backwater habitats may be the dominant pattern with limited regeneration of diverse habitat types. Understanding changes to permanent and episodic water availability may aid predictions regarding ecological effects of channelization and impoundments, including both increases and decreases in riverine productivity, biotic diversity and population abundances through space and time. Water resource managers and biologists can use information regarding river-wide changes in habitat availability obtained through remote sensing data to direct river management practices, including dredging and side-channel construction, and to assess ecological responses to such changes

\u3cem\u3eMycobacterium marinum\u3c/em\u3e Infection After Exposure to Coal Mine Water

Mycobacterium marinum infection has been historically associated with exposure to aquariums, swimming pools, fish, or other marine fauna. We present a case of M marinum left wrist tenosynovitis and elbow bursitis associated with a puncture injury and exposure to coal mine water in Illinois

International approaches to rural generalist medicine: a scoping review

Background: Contemporary approaches to rural generalist medicine training and models of care are developing internationally as part of an integrated response to common challenges faced by rural and remote health services and policymakers (addressing health inequities, workforce shortages, service sustainability concerns). The aim of this study was to review the literature relevant to rural generalist medicine. Methods: A scoping review was undertaken to answer the broad question 'What is documented on rural generalist medicine?' Literature from January 1988 to April 2017 was searched and, after final eligibility filtering (according to established inclusion and exclusion criteria), 102 articles in English language were included for final analysis. Results: Included papers were analysed and categorised by geographic region, study design and subject themes. The majority of articles (80%) came from Australia/New Zealand and North America, reflecting the relative maturity of programmes supporting rural generalist medicine in those countries. The most common publication type was descriptive opinion pieces (37%), highlighting both a need and an opportunity to undertake and publish more systematic research in this area. Important themes emerging from the review were: - Definition - Existing pathways and programmes - Scope of practice and service models - Enablers and barriers to recruitment and retention - Reform recommendations There were some variations to, or criticisms of, the definition of rural generalist medicine as applied to this review, although this was only true of a small number of included articles. Across remaining themes, there were many similarities and consistent approaches to rural generalist medicine between countries, with some variations reflecting environmental context and programme maturity. This review identified recent literature from countries with emerging interest in rural generalist medicine in response to problematic rural health service delivery. Conclusions: Supported, coordinated rural generalist medicine programmes are being established or developed in a number of countries as part of an integrated response to rural health and workforce concerns. Findings of this review highlight an opportunity to better share the development and evaluation of best practice models in rural generalist medicine