Opposing patterns in self-reported and measured physical activity levels in middle-aged adults

Physical activity brings significant health benefits to middle-aged adults, although the research to date has been focused on late adulthood. This study aims to examine how ageing affects the self-reported and accelerometer-derived measures of physical activity levels in middle-aged adults. We employed the data recorded in the UK Biobank and analysed the physical activity levels of 2,998 participants (1381 men and 1617 women), based on self-completion questionnaire and accelerometry measurement of physical activity. We also assessed the musculoskeletal health of the participants using the dual-energy X-ray absorptiometry (DXA) measurements provided by the UK Biobank. Participants were categorised into three groups according to their age: group I younger middle-aged (40 to 49 years), group II older middle-aged (50 to 59 years), and group III oldest middle-aged (60 to 69 years). Self-reported physical activity level increased with age and was the highest in group III, followed by group II and I (P?<?0.05). On the contrary, physical activity measured by accelerometry decreased significantly with age from group I to III (P?<?0.05), and the same pertained to the measurements of musculoskeletal health (P?<?0.05). It was also shown that middle-aged adults mostly engaged in low and moderate intensity activities. The opposing trends of the self-reported and measured physical activity levels may suggest that middle-aged adults over-report their activity level as they age. They should be aware of the difference between their perceived and actual physical activity levels, and objective measures would be useful to prevent the decline in musculoskeletal health.

     

脑血管介入治疗患者穿刺点压迫方法的研究进展

综述了脑血管介入术穿刺点压迫方法（包括人工压迫、弹力带加压、压迫器加压、血管闭合装置压迫、止血敷料压迫、气囊加压6种）、止血压力以及压迫时间，提出由于穿刺点和压迫方法的不同，其压迫时间、减压时间和压力大小等需要进一步探讨，为脑血管介入术后患者穿刺点的临床护理提供参考。     

高密度多孔聚乙烯植入体在鼻整形中的应用

目的 探究高密度多孔聚乙烯植入体在鼻整形中的应用价值方法 选取2019年5月-2021年8月我院接受综合鼻整形手术的106例患者为研究对象，采用照随机数字表法分为对照组和观察组，各53例。 对照组采用自体肋骨植入术，观察组采用高密度多孔聚乙烯植入体植入治疗，比较两组临床手术指标(手术时间、恢复时间)、整形优良率、鼻指标(鼻高度/鼻长度比例、鼻唇角)、并发症发生率以及疼痛评分结果 观察组手术时间、术后恢复时间均短于对照组(P＜0.05)；观察组整形优良率为94.34%，高于对照组的86.79%，差异有统计学意义(P＜0.05)；观察组鼻高度/鼻长度比例高于对照组，鼻唇角小于对照组，差异有统计学意义(P＜0.05)；观察组并发症发生率为5.66%，低于对照组的15.09%，差异有统计学意义(P＜0.05)；观察组疼痛评分低于对照组，差异有统计学意义(P＜0.05)；观察组治疗满意度为 96.23%，高于对照组的84.91%，差异有统计学意义(P＜0.05)结论 高密度多孔聚乙烯植入体在鼻整形中的应用效果理想，可减轻患者疼痛度，缩短手术和恢复时间，降低并发症发生率，改善鼻高度/鼻长度比例和鼻唇角，实现理想的整形效果。     

China special issue on gastrointestinal tumors-Radiological features of pathological complete response in mismatch repair deficient colorectal cancer after neoadjuvant PD-1 blockade: A post hoc analysis of the PICC phase II trial

Neoadjuvant programmed cell death protein 1 (PD-1) blockade exhibits promising efficacy in patients with mismatch repair deficient (dMMR) colorectal cancer (CRC). However, discrepancies between radiological and histological findings have been reported in the PICC phase II trial (NCT 03926338). Therefore, we strived to discern radiological features associated with pathological complete response (pCR) based on computed tomography (CT) images. Data were obtained from the PICC trial that included 36 tumors from 34 locally advanced dMMR CRC patients, who received neoadjuvant PD-1 blockade for 3 months. Among the 36 tumors, 28 (77.8%) tumors achieved pCR. There were no statistically significant differences in tumor longitudinal diameter, the percentage change in tumor longitudinal diameter from baseline, primary tumor sidedness, clinical stage, extramural venous invasion status, intratumoral calcification, peritumoral fat infiltration, intestinal fistula and tumor necrosis between the pCR and non-pCR tumors. Otherwise, tumors with pCR had smaller posttreatment tumor maximum thickness (median: 10 mm vs 13 mm, P = .004) and higher percentage decrease in tumor maximum thickness from baseline (52.9% vs 21.6%, P = .005) compared to non-pCR tumors. Additionally, a higher proportion of the absence of vascular sign (P = .003, odds ratio [OR] = 25.870 [95% CI, 1.357-493.110]), nodular sign (P < .001, OR = 189.000 [95% CI, 10.464-3413.803]) and extramural enhancement sign (P = .003, OR = 21.667 [2.848-164.830]) was observed in tumors with pCR. In conclusion, these CT-defined radiological features may have the potential to serve as valuable tools for clinicians in identifying patients who have achieved pCR after neoadjuvant PD-1 blockade, particularly in individuals who are willing to adopt a watch-and-wait strategy.     

A systematic review of the methodological quality of economic evaluations in genetic screening and testing for monogenic disorders

PurposeUnderstanding the value of genetic screening and testing for monogenic disorders requires high-quality, methodologically robust economic evaluations. This systematic review sought to assess the methodological quality among such studies and examined opportunities for improvement.MethodsWe searched PubMed, Cochrane, Embase, and Web of Science for economic evaluations of genetic screening/testing (2013-2019). Methodological rigor and adherence to best practices were systematically assessed using the British Medical Journal checklist.ResultsAcross the 47 identified studies, there were substantial variations in modeling approaches, reporting detail, and sophistication. Models ranged from simple decision trees to individual-level microsimulations that compared between 2 and >20 alternative interventions. Many studies failed to report sufficient detail to enable replication or did not justify modeling assumptions, especially for costing methods and utility values. Meta-analyses, systematic reviews, or calibration were rarely used to derive parameter estimates. Nearly all studies conducted some sensitivity analysis, and more sophisticated studies implemented probabilistic sensitivity/uncertainty analysis, threshold analysis, and value of information analysis.ConclusionWe describe a heterogeneous body of work and present recommendations and exemplar studies across the methodological domains of (1) perspective, scope, and parameter selection; (2) use of uncertainty/sensitivity analyses; and (3) reporting transparency for improvement in the economic evaluation of genetic screening/testing.     

Interrelationships between Cellular Density,Mosaic Patterning,and Dendritic Coverage of VGluT3 Amacrine Cells

Amacrine cells of the retina are conspicuously variable in their morphologies, their population demographics, and their ensuing functions. Vesicular glutamate transporter 3 (VGluT3) amacrine cells are a recently characterized type of amacrine cell exhibiting local dendritic autonomy. The present analysis has examined three features of this VGluT3 population, including their density, local distribution, and dendritic spread, to discern the extent to which these are interrelated, using male and female mice. We first demonstrate that Bax-mediated cell death transforms the mosaic of VGluT3 cells from a random distribution into a regular mosaic. We subsequently examine the relationship between cell density and mosaic regularity across recombinant inbred strains of mice, finding that, although both traits vary across the strains, they exhibit minimal covariation. Other genetic determinants must therefore contribute independently to final cell number and to mosaic order. Using a conditional KO approach, we further demonstrate that Bax acts via the bipolar cell population, rather than cell-intrinsically, to control VGluT3 cell number. Finally, we consider the relationship between the dendritic arbors of single VGluT3 cells and the distribution of their homotypic neighbors. Dendritic field area was found to be independent of Voronoi domain area, while dendritic coverage of single cells was not conserved, simply increasing with the size of the dendritic field. Bax-KO retinas exhibited a threefold increase in dendritic coverage. Each cell, however, contributed less dendrites at each depth within the plexus, intermingling their processes with those of neighboring cells to approximate a constant volumetric density, yielding a uniformity in process coverage across the population.SIGNIFICANCE STATEMENT Different types of retinal neuron spread their processes across the surface of the retina to achieve a degree of dendritic coverage that is characteristic of each type. Many of these types achieve a constant coverage by varying their dendritic field area inversely with the local density of like-type neighbors. Here we report a population of retinal amacrine cells that do not develop dendritic arbors in relation to the spatial positioning of such homotypic neighbors; rather, this cell type modulates the extent of its dendritic branching when faced with a variable number of overlapping dendritic fields to approximate a uniformity in dendritic density across the retina.     

杭州市下城区中老年人对社区中医药卫生服务的需求与影响因素

目的:探究中老年人对对社区中医药卫生服务的需求及影响因素,为促进中医药在社区卫生服务中心的开展提供科学依据。方法:于2018~2019年随机抽取杭州市下城区石桥街道社区卫生服务中心诊治的40岁以上中老年人作为研究对象。采用问卷调查的方法对中老年人进行社区中医药卫生服务的需求及影响因素分析。结果:研究共纳入569例中老年人,中老年人对中医药卫生服务总体需求度为75.75%,对中医药技术服务、中医用药、中医药膳指导服务、腧穴保健指导、中医康复、情志疏导需求度分别为84.53%、75.92%、81.72%、88.75%、71.18%、65.38%。对中医药卫生服务有需求和无需求的两组研究对象中,年龄、性别、BMI、婚姻状况、学历、家庭人均年收入、是否患有慢性病的构成情况差异明显(P<0.05),高年龄、男性、高BMI、丧偶或离异或其他、高学历、高收入及患有慢性病的中老年人对中医药卫生服务需求度较高。结论:中老年人对社区中医药卫生服务的需求度较高,尤其是高年龄、女性、高收入及患有慢性病的人群。