Recent Advances in Self-Powered Piezoelectric and Triboelectric Sensors: From Material and Structure Design to Frontier Applications of Artificial Intelligence

The development of artificial intelligence and the Internet of things has motivated extensive research on self-powered flexible sensors. The conventional sensor must be powered by a battery device, while innovative self-powered sensors can provide power for the sensing device. Self-powered flexible sensors can have higher mobility, wider distribution, and even wireless operation, while solving the problem of the limited life of the battery so that it can be continuously operated and widely utilized. In recent years, the studies on piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs) have mainly concentrated on self-powered flexible sensors. Self-powered flexible sensors based on PENGs and TENGs have been reported as sensing devices in many application fields, such as human health monitoring, environmental monitoring, wearable devices, electronic skin, human–machine interfaces, robots, and intelligent transportation and cities. This review summarizes the development process of the sensor in terms of material design and structural optimization, as well as introduces its frontier applications in related fields. We also look forward to the development prospects and future of self-powered flexible sensors.

Humanized Mice as a Valuable Pre-Clinical Model for Cancer Immunotherapy Research

Immunotherapy with checkpoint inhibitors opened new horizons in cancer treatment. Clinical trials for novel immunotherapies or unexplored combination regimens either need years of development or are simply impossible to perform like is the case in cancer patients with limited life expectancy. Thus, the need for preclinical models that rapidly and safely allow for a better understanding of underlying mechanisms, drug kinetics and toxicity leading to the selection of the best regimen to be translated into the clinic, is of high importance. Humanized mice that can bear both human immune system and human tumors, are increasingly used in recent preclinical immunotherapy studies and represent a remarkably unprecedented tool in this field. In this review, we describe, summarize, and discuss the recent advances of humanized mouse models used for cancer immunotherapy research and the challenges faced during their establishment. We also highlight the lack of preclinical studies using this model for radiotherapy-based research and argue that it can be a great asset to understand and answer many open questions around radiation therapy such as its presumed associated “abscopal effect”.

Audiobooks from terminally ill parent for their children – a qualitative evaluation

Background Improving the quality of life is one of the main objectives of palliative care. Biographical approaches are often used in combination with leaving a legacy in a range of different interventions such as Dignity Therapy or Life Review. This study presents an evaluation of audiobook biographies for palliative care patients with young children. Methods Young parents diagnosed with a life-limiting disease could participate and create an audiobook for their young children. The audiobook itself was recorded over several days and edited by qualified radio journalists. After providing informed consent participants were interviewed twice over the course of the intervention regarding expectations, concerns, motivation, and experiences. Interviews and notes were transcribed verbatim and were analyzed using content analysis. The contents of the audiobooks are not part of the evaluation. Results The data were collected from February 2017 till September 2020. Fifty-four patients with ninety-six children at a mean age of 7 years were included and created an audiobook. The main theme of all interviews were the children. Within this field identified main topics were legacy, motivation, usage, benefit, aims, difficulties and worries in descending order. All patients would recommend the intervention. Conclusion Creating an audiobook as a legacy to their children seemed to help the diseased parents to cope with their limited life span.

Genomic population structure associated with repeated escape of Salmonella enterica ATCC14028s from the laboratory into nature

Salmonella enterica serovar Typhimurium strain ATCC14028s is commercially available from multiple national type culture collections, and has been widely used since 1960 for quality control of growth media and experiments on fitness (“laboratory evolution”). ATCC14028s has been implicated in multiple cross-contaminations in the laboratory, and has also caused multiple laboratory infections and one known attempt at bioterrorism. According to hierarchical clustering of 3002 core gene sequences, ATCC14028s belongs to HierCC cluster HC20_373 in which most internal branch lengths are only one to three SNPs long. Many natural Typhimurium isolates from humans, domesticated animals and the environment also belong to HC20_373, and their core genomes are almost indistinguishable from those of laboratory strains. These natural isolates have infected humans in Ireland and Taiwan for decades, and are common in the British Isles as well as the Americas. The isolation history of some of the natural isolates confirms the conclusion that they do not represent recent contamination by the laboratory strain, and 10% carry plasmids or bacteriophages which have been acquired in nature by HGT from unrelated bacteria. We propose that ATCC14028s has repeatedly escaped from the laboratory environment into nature via laboratory accidents or infections, but the escaped micro-lineages have only a limited life span. As a result, there is a genetic gap separating HC20_373 from its closest natural relatives due to a divergence between them in the late 19th century followed by repeated extinction events of escaped HC20_373.

The ‘Surprise question’ in heart failure: a prospective cohort study

ObjectiveThe Surprise Question (SQ) is a prognostic screening tool used to identify patients with limited life expectancy. We assessed the SQ’s performance predicting 1-year mortality among patients in ambulatory heart failure (HF) clinics. We determined that the SQ’s performance changes according to sex and other demographic (age) and clinical characteristics, mainly left ventricular ejection fraction (LVEF) and the New York Heart Association (NYHA) functional classifications.MethodsWe conducted a prospective cohort study in two HF clinics. To assess the performance of the SQ in predicting 1-year mortality, we calculated the sensitivity, specificity, positive and negative likelihood ratios, and the positive and negative predictive values. To illustrate if the results of the SQ changes the probability that a patient dies within 1 year, we created Fagan’s nomograms. We report the results from the overall sample and for subgroups according to sex, age, LVEF and NYHA functional class.ResultsWe observed that the SQ showed a sensitivity of 85% identifying ambulatory patients with HF who are in the last year of life. We determined that the SQ’s performance predicting 1-year mortality was similar among women and men. The SQ performed better for patients aged under 70 years, for patients with reduced or mildly reduced ejection fraction, and for patients NYHA class III/IV.ConclusionsWe consider the tool an easy and fast first step to identify patients with HF who might benefit from an advance care planning discussion or a referral to palliative care due to limited life expectancy.

Use of antithrombotics at the end of life: an in-depth chart review study

Background Antithrombotics are frequently prescribed for patients with a limited life expectancy. In the last phase of life, when treatment is primarily focused on optimizing patients’ quality of life, the use of antithrombotics should be reconsidered. Methods We performed a secondary analysis of a retrospective review of 180 medical records of patients who had died of a malignant or non-malignant disease, at home, in a hospice or in a hospital, in the Netherlands. All medication prescriptions and clinical notes of patients using antithrombotics in the last three months of life were reviewed manually. We subsequently developed case vignettes based on a purposive sample, with variation in setting, age, gender, type of medication, and underlying disease. Results In total 60% (n=108) of patients had used antithrombotics in the last three months of life. Of all patients using antithrombotics 33.3 % died at home, 21.3 % in a hospice and 45.4 % in a hospital. In total, 157 antithrombotic prescriptions were registered; 30 prescriptions of vitamin K antagonists, 60 of heparins, and 66 of platelet aggregation inhibitors. Of 51 patients using heparins, 32 only received a prophylactic dose. In 75.9 % of patients antithrombotics were continued until the last week before death. Case vignettes suggest that inability to swallow, bleeding complications or the dying phase were important factors in making decisions about the use of antithrombotics. Conclusions Antithrombotics in patients with a life limiting disease are often continued until shortly before death. Clinical guidance may support physicians to reconsider (dis)continuation of antithrombotics and discuss this with the patient.

Modelling Health in University Students: Are Young Women More Complicated Than Men?

The biopsychosocial model of health in a limited life course perspective was tested among students in higher education using data from a nationwide cross-sectional survey of students on track to become teachers in Hungary. Health determinants were grouped into categories of biological, psychological, and social determinants and arranged in a temporal manner from childhood to the present. The model was tested by canonical correlation analysis followed by multivariate analysis of covariance. One composite outcome of health and six determinant groups were examined out of a total of 24 variables in both genders. Separate sets of health determinants were identified for men and women. The health of men was determined by fewer variables that were more proximal in time, more centred around physical activity, and less influenced by social relations. As opposed to that of men, women’s health was influenced by age; determinants were grouped around the ingestion of various substances and social support. In contrast to men, the health of women seemed to be more obviously multifactorial. The study supports the usefulness of the biopsychosocial model of health in research. The best fit models provided evidence for the importance of gender awareness when designing public health interventions aimed at students.

Ring the Bell for Sickle Cell: Encouraging Advocacy in an Underserved Community

Sickle cell disease (SCD) was once a disease of childhood because of a limited life expectancy. Due to medical advances, it is now common for people with SCD to live into adulthood. Funding and resources for adults with SCD, however, remain limited. Adult patients would benefit from increased access to medical care, mental health care services, and workforce development. The Indiana Sickle Cell Consortium, a group of medical providers and community-based organizations, worked closely with people living with SCD and their family members to create a campaign advocating for state funding for programs for adults with SCD. This campaign culminated with the passage of a bill that provides $250,000 in funding for program development for adults with SCD. The bill also directs the Indiana Department of Health to carry out a needs assessment for people with SCD in Indiana. However, continued efforts are needed to reduce health disparities for people with SCD. The Indiana Sickle Cell Consortium will continue advocacy efforts in future legislative cycles and bring attention to the health inequities that affect people with SCD.

End of life care for frail older people; do we have a consensus guideline on deprescribing?

Background: Deprescribing interventions have shown to improve medication appropriateness in older people. However, the evidence on the actual benefits and risks of deprescribing in older adults at the end of life are limited. Due to the lack of evidence on the safety and efficacy of medication in these populations, the most appropriate deprescribing approach is unclear. We aimed to conduct a narrative review of research on existing deprescribing guidelines targeted to frail older people at the end of life. Methods: A literature search was conducted in PubMed, Embase, CINAHL and Google Scholar to identify studies from inception to January 2021 on deprescribing guidelines/tools for frail older adults near end-of-life or palliative situation or life-limiting illnesses or limited life expectancy were included. Results: A total of nine studies were included. The deprescribing guidelines used in these studies were helpful to some extent in optimising medications in patients with limited life expectancy and life-limiting illnesses. Some of them have been tested in prospective studies that showed their usefulness in minimising the number of potentially inapproapriate medications. These studies however were not randomised and involved small sample sizes and had little insight into the clinical outcomes of using these tools. Conclusions: The existing tools and guidelines on deprescribing do not represent the end of life care nor address the medication appropriateness among individuals with a specific condition. An explicit and rigorous consensus-based guideline needs to be developed and tested in a well-designed clinical trial to measure clinically significant outcomes