Aim:The objective of the present study was to propose plasmalogens as a beneficial factor in human plasma by showing a highly positive correlation with high-density lipoprotein (HDL) and a significant reduction with aging. Methods: For 148 elderly subjects suspected of coronary artery disease (CAD), clinical characteristics such as coronary stenosis, hyperlipidemia, abnormal glucose tolerance, and hypertension were investigated, and serum biochemical markers including plasmalogens were determined. Results: Serum plasmalogens levels tended to fall in significant coronary stenosis and abnormal glucose tolerance. Correlative analyses among serum biochemical markers revealed that plasmalogens positively correlate with HDL-related values, particularly apolipoprotein A-(apo A-), and that the molar ratio of choline plasmalogen (ChoPlas) to ethanolamine plasmalogen (EtnPlas) correlates positively with low-density lipoprotein (LDL) particle size, and negatively with apo A-and fasting triglyceride (TG) levels. Comparison of plasmalogens in elderly subjects with those of 119 healthy young subjects showed a marked decrease in serum plasmalogens levels by aging. Conclusion: These results suggest that serum plasmalogens, antioxidant phospholipids, function as a beneficial factor as well as HDL, and that the measurement of serum plasmalogens is useful in clinical diagnosis.
The aim of this cross-sectional study was to investigate whether tongue strength observed in older adult inpatients of a rehabilitation hospital is associated with muscle function, nutritional status, and dysphagia. A total of 174 older adult inpatients aged 65 years and older in rehabilitation (64 men, 110 women; median age, 84 years; interquartile range, 80-89 years) who were suspected of having reduced tongue strength due to sarcopenia were included in this study. Isometric tongue strength was measured using a device fitted with a disposable oral balloon probe. We evaluated age, muscle function as assessed by the Barthel index and grip strength, nutritional status as measured by the Mini Nutritional Assessment-short form (MNA-SF), body mass index, serum albumin, controlling nutritional status, and calf circumference and arm muscle area to assess muscle mass. In addition, the functional oral intake scale (FOIS) was used as an index of dysphagia. Multivariate linear regression analysis revealed that isometric tongue strength was independently associated with grip strength (coefficient = 0.33, 95 % confidence interval (CI) 0.12-0.54, p = 0.002), MNA-SF (coefficient = 0.74, 95 % CI 0.12-1.35, p = 0.019), and FOIS (coefficient = 0.02, 95 % CI 0.00-0.15, p = 0.047). To maintain and improve tongue strength in association with sarcopenic dysphagia, exercise therapy and nutritional therapy interventions, as well as direct interventions to address tongue strength, may be effective in dysphagia rehabilitation in older adult inpatients.
Sobajima et al. identify the novel protein RELCH/KIAA1468 as a Rab11-binding protein and show that RELCH/KIAA1468 and Rab11 regulate OSBP-dependent nonvesicular cholesterol transport from recycling endosomes to the trans-Golgi network.
Memory processing in nonhuman animals has been typically tested in situations where the animals are repeatedly trained to retrieve their memory trace, such as delayed matching to sample, serial probe recognition, etc. In contrast, how they utilize incidentally formed memory traces is not well investigated except in rodents. We examined whether domestic dogs could solve an unexpected test based on a single past experience. In Experiment 1, leashed dogs were led to 4 open, baited containers and allowed to eat from 2 of them (Exposure phase). After a walk outside for more than 10 min, during which time the containers were replaced with new identical ones, the dogs were unexpectedly returned to the site and unleashed for free exploration (test phase). Eleven out of 12 dogs first visited one of the containers from which they had not eaten. In Experiment 2, two containers had food in them, one had a nonedible object, and the last one was empty. Dogs visited all 4 containers and were allowed to eat one of the food rewards in the Exposure phase. In the test phase, unleashed dogs first visited the previously baited container from which they had not eaten significantly more often than chance. These results demonstrate that in an unexpected, test dogs may retrieve "what" and "where" information about seen (now invisible) items from incidental memory formed during a single past experience.
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