The Effect of Prime Word Processing on the Semantic Priming Effect.

In three experiments the effect of ease of prime word access on semantic priming was investigated. Ease of prime access was manipulated by prime word frequency, by prime degradation, and by prime repetition. Primes accessed faster (high frequency prime words, repeated primes) should produce larger priming than those accessed more slowly (low frequency prime words, degraded prime words). The time course of priming was also examined by comparing a 150 ms SOA to a 500 ms. The results partially supported the hypothesis. There was a prime word frequency effect on priming in both short and long SOA conditions. High frequency prime words tended to produce greater priming than low frequency prime words regardless of available prime processing time. Slowing or accelerating prime processing speed by degradation and repetition respectively did not have effects on priming. The manipulation of word frequency affects both lexical and semantic processes while manipulations of degradation and repetition affect mainly the lexical process of word recognition. These results suggest that semantic access to prime words, rather than lexical access, has an effect on semantic priming

End-of-life communication, comfort, and engagement among middle-aged and older individuals with families in the United States

Objective: Drawing from the family communication patterns theory and family life cycle theory, this study examined predictors for middle-aged (40 to 59 years old) and older (60 to 79 years old) individuals’ comfort level and actual engagement in communication about their EoL wishes with their families, specifically with their spouse and child(ren). Background: Communicating about end-of-life (EoL) wishes is not easy for many, even though scholars recommend clarifying and communicating EoL wishes with family members well before one is near death. People are not always well educated or informed about their EoL care options and wishes, do not always know what an AD entails, how an AD works, or how to communicate effectively about advance care planning.  The discussion of one’s EoL wishes is beneficial, not only for improving the overall care and well-being of a patient, but also for their family and caretakers. Method: A total of 189 married individuals between the ages of 40 and 80 with one or more child(ren) participated in a survey that examined the clarity of their EoL wishes, knowledge of their EoL issues, health status, and the two dimensions of their family communication environment. Conclusion: The current study indicates that an open family communication climate, knowledge of EoL issues, clarity of EoL wishes, and age are strong predictors for individuals’ engagement in EoL communication among their family

Fitness versus Fatness and Insulin Resistance in U.S. Adolescents

Background. The present study examined the relationship between insulin resistance and both waist circumference and cardiorespiratory fitness in U.S. adolescents. Methods. NHANES assessed a nationally representative sample of U.S. adolescents (12–18 yrs) between 1999–2002. Abdominal adiposity was estimated by waist circumference, overall adiposity by BMI, and cardiorespiratory fitness (maximal oxygen uptake (VO2max) from a treadmill exercise test). Insulin resistance was estimated from fasting insulin and glucose using the homeostatic model assessment method (i.e., HOMA) and was log-transformed. Results. 1078 adolescents were included in the study. Positive correlations existed between lnHOMA and waist circumference (r = 0.59; r = 0.54) for boys and girls, respectively. lnHOMA and VO2max were inversely related in boys (r = −0.29) but not girls (r = −0.06). Gender-specific analyses by BMI category showed that the significant inverse relationship in lnHOMA and VO2max was primarily present in obese boys. Conclusion. Among adolescents, important gender and BMI differences exist in the relationship between insulin resistance and fitness. While waist circumference and BMI are important predictors in all children, fitness appears especially important in obese boys. These findings may have important implications for gender-specific interventions to prevent adult obesity and diabetes mellitus

Development and Validation of a Tool for Assessing Glucose Impairment in Adolescents

INTRODUCTION: Childhood obesity is associated with an increased risk for type 2 diabetes. Early identification of adolescents at risk for impaired fasting blood glucose may lead to earlier and more comprehensive evaluation and intervention. Because widespread blood glucose testing of adolescents is not recommended, community-based tools are needed to identify those who could benefit from further testing. One such tool, developed for adults, was the Tool for Assessing Glucose ImpairmenT (TAG-IT). Our objective was to validate whether a similar tool could be useful for community-based screening of glucose impairment risk among adolescents. METHODS: Our study sample consisted of 3,050 adolescents aged 12 to18 years who had participated in the 1999-2008 National Health and Nutrition Examination Survey (NHANES). Half of participants were female and 40% were nonwhite. NHANES measured fasting blood glucose and height, weight, and resting heart rate. We used Pearson correlations and regression analysis to determine key variables for predicting glucose impairment. From these measurements, we created a composite TAG-IT score for adolescents called TAG-IT-A. We then applied the TAG-IT-A model to 1988-1994 NHANES data, using linear regression analysis and receiver operating characteristic analysis to determine how well the TAG-IT-A score predicted a fasting blood glucose at or above 100 mg/dL. RESULTS: We determined that age, sex, body mass index, and resting heart rate were predictors of impaired fasting blood glucose and that TAG-IT-A was a better predictor of impaired fasting blood glucose than body mass index alone (area under the curve, 0.61, P < .001 vs 0.55, P = .10, respectively). A TAG-IT-A score of 3 or higher correctly identified 50% of adolescents with impaired fasting blood glucose, while a score of 5 or higher correctly identified 76% . CONCLUSION: The TAG-IT-A score is a simple screening tool that clinicians and public health professionals could use to easily identify adolescents who may have impaired fasting blood glucose and need a more comprehensive evaluation

Validation of a dietary balance score

This study assessed the validity of dietary balance scores (DBSs) by investigating the association between DBSs and nutrient adequacy (NA) in two Japanese populations. The participants were 65 community-dwelling Japanese from Tokushima Prefecture and 2,330 community-dwelling Japanese from Aichi Prefecture. Based on food frequency questionnaires or 3-day dietary records, we obtained 18 food groups. The NA score integrates nine beneficial nutrients and two nutrients that should be limited. We calculated four different DBSs: DBS1 consisted of five food groups (score range : 0–20), DBS2 consisted of nine food groups (score range : 0–36), DBS3 consisted of eight food groups (score range : 0–32), and DBS4 consisted of 10 food groups (score range : 0–40). Both the Spearman rank correlation coefficient with NA and the area under the receiver operating characteristic curve (AUC-ROC) for the nine beneficial nutrients were then estimated to test the performance of each DBS in predicting nutrient intake. The results showed that DBS1 and DBS4 were positively correlated with NA, while the AUC-ROC showed that DBS4 could moderately discriminate individuals with adequate intake levels of all nine nutrients. These findings suggest DBSs (especially DBS4) are useful in assessing dietary balance in middle-aged and older community-dwelling Japanese

Farnesylation of Retinal Transducin Underlies Its Translocation during Light Adaptation

SummaryG proteins are posttranslationally modified by isoprenylation: either farnesylation or geranylgeranylation. The γ subunit of retinal transducin (Tα/Tβγ) is selectively farnesylated, and the farnesylation is required for light signaling mediated by transducin in rod cells. However, whether and how this selective isoprenylation regulates cellular functions remain poorly understood. Here we report that knockin mice expressing geranylgeranylated Tγ showed normal rod responses to dim flashes under dark-adapted conditions but exhibited impaired properties in light adaptation. Of note, geranylgeranylation of Tγ suppressed light-induced transition of Tβγ from membrane to cytosol, and also attenuated its light-dependent translocation from the outer segment to the inner region, an event contributing to retinal light adaptation. These results indicate that, while the farnesylation of transducin is interchangeable with the geranylgeranylation in terms of the light signaling, the selective farnesylation is important for visual sensitivity regulation by providing sufficient but not excessive membrane anchoring of Tβγ