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Signaling mechanisms underlying the sexual isolation of species are poorly understood. Using four subspecies of Drosophila mojavensis as a model, we identify two behaviorally active male-specific pheromones. One functions as a conserved male anti-aphrodisiac in all subspecies and acts via gustation. The second induces female receptivity via olfaction exclusively in the two subspecies that produce it. Genetic analysis of the cognate receptor for the olfactory pheromone indicates an important role for this sensory pathway in promoting sexual isolation of subspecies, in collaboration with auditory signals. Surprisingly, the peripheral sensory pathway detecting this pheromone is conserved molecularly, physiologically and anatomically across subspecies. These observations imply that subspecies-specific behaviors arise from differential interpretation of the same peripheral cue, reminiscent of sexually conserved detection but dimorphic interpretation of male pheromones in D. melanogaster. Our results reveal that, during incipient speciation, pheromone production, detection and interpretation do not necessarily evolve in a coordinate manner.
Mate discrimination among subspecies through a conserved olfactory pathway
Purpose During the COVID-19 pandemic, emergency department (ED) volumes have fluctuated We hypothesized that natural language processing (NLP) models could quantify changes in detection of acute abdominal pathology (acute appendicitis (AA), acute diverticulitis (AD), or bowel obstruction (BO)) on CT reports Methods This retrospective study included 22,182 radiology reports from CT abdomen/pelvis studies performed at an urban ED between January 1, 2018 to August 14, 2020 Using a 2448 subset of manually annotated reports, we trained random forest NLP models to classify the presence of AA, AD, and BO in report impressions Performance was assessed using 5-fold cross validation The NLP classifiers were then applied to all reports Results The NLP classifiers for AA, AD, and BO demonstrated cross-validation classification accuracies between 0 97 and 0 99 and F1-scores between 0 86 and 0 91 When applied to all CT reports, the estimated numbers of AA, AD, and BO cases decreased 43C57% in April 2020 (first regional peak of COVID-19 cases) compared to 2018C2019 However, the number of abdominal pathologies detected rebounded in MayCJuly 2020, with increases above historical averages for AD The proportions of CT studies with these pathologies did not significantly increase during the pandemic period Conclusion Dramatic decreases in numbers of acute abdominal pathologies detected by ED CT studies were observed early on during the COVID-19 pandemic, though these numbers rapidly rebounded The proportions of CT cases with these pathologies did not increase, which suggests patients deferred care during the first pandemic peak NLP can help automatically track findings in ED radiology reporting
Automated tracking of emergency department abdominal CT findings during the COVID-19 pandemic using natural language processing
La pandemia de SARS-CoV-2 es una emergencia sanitaria sin precedentes, que ha implicado un reordenamiento en la priorizacin de procedimientos mdicos electivos, frente a un potencial colapso del sistema de salud a nivel mundial y riesgo de contagio del personal y pacientes. Al igual que en el resto del mundo, en Chile la mayora de los centros de medicina reproductiva han debido suspender sus diferentes terapias de reproduccin asistida (TRA). Sin embargo, a raiz de la disminucin del nmero de contagios y mayor evidencia cientfica disponible, la Sociedad Europea de Reproduccin Humana y Embriologa (ESHRE) ha recomendado reiniciar los ciclos de medicina reproductiva de forma gradual, a travs de sistemas de triage, priorizando pacientes por medio de la generacin de distintos escenarios. Considerando esta recomendacin, se realiz una revisin sobre la evidencia existente respecto a SARS-CoV-2 / COVID-19 en medicina reproductiva recopilando diferentes directrices de las principales sociedades internacionales, con el objetivo de generar una recomendacin ajustada a la realidad nacional.
Management recommendation of reproductive medicine patients in SARS-CoV-2 time: A literature summarize/ Recomendaciones en el manejo de pacientes de medicina reproductiva en tiempos de SARS-CoV-2: Un resumen de la literatura
BACKGROUND: Recombinatorial cloning using the Gateway(TM) technology has been the method of choice for high-throughput omics projects, resulting in the availability of entire ORFeomes in Gateway(TM) compatible vectors. The MultiSite Gateway(TM) system allows combining multiple genetic fragments such as promoter, ORF and epitope tag in one single reaction. To date, this technology has not been accessible in the yeast Saccharomyces cerevisiae, one of the most widely used experimental systems in molecular biology, due to the lack of appropriate destination vectors. RESULTS: Here, we present a set of three-fragment MultiSite Gateway(TM) destination vectors that have been developed for gene expression in S. cerevisiae and that allow the assembly of any promoter, open reading frame, epitope tag arrangement in combination with any of four auxotrophic markers and three distinct replication mechanisms. As an example of its applicability, we used yeast three-hybrid to provide evidence for the assembly of a ternary complex of plant proteins involved in jasmonate signalling and consisting of the JAZ, NINJA and TOPLESS proteins. CONCLUSION: Our vectors make MultiSite Gateway(TM) cloning accessible in S. cerevisiae and implement a fast and versatile cloning method for the high-throughput functional analysis of (heterologous) proteins in one of the most widely used model organisms for molecular biology research.
A MultiSite Gateway(TM )vector set for the functional analysis of genes in the model Saccharomyces cerevisiae
SIMPLE SUMMARY: This study aims to evaluate overall survival and the risk of cause-specific mortality of thyroid cancer patients. Thyroid cancer patients were obtained from the universal health insurance claims from Taiwan between 2001 and 2017. We compared these patients with control subjects matched for age, gender, and baseline conditions to assess the risk of mortality. Of the 30,778 patients with thyroid cancer, the overall mortality rate was 1.29% and the leading causes of death were thyroid cancer (31.2%), other cancers (29.9%), and cardiovascular disease (CVD) mortality (12.3%), respectively. We found patients with thyroid cancer had excellent overall survival and lower CVD mortality risk. ABSTRACT: The incidence of thyroid cancer has increased substantially worldwide. However, the overall mortality risk and actual causes of death in thyroid cancer patients have not been extensively evaluated. In this study, patients with thyroid cancer diagnosed between 2001 and 2017 were analyzed from Taiwans National Health Insurance Research Database. We compared these patients with control subjects matched for age, gender, history of cardiovascular disease (CVD), hyperlipidemia, diabetes mellitus, hypertension, and occupation to assess the risk of overall mortality and cause-specific mortality. Finally, our cohort comprised 30,778 patients with thyroid cancer. Three hundred and ninety-eight deaths (1.29%) occurred during a median follow-up of 60.0 months (range: 30.3 to 117.6 months). The primary cause of death was thyroid cancer mortality (31.2%), followed by other malignancy-related mortality (29.9%) and CVD mortality (12.3%). The overall mortality risk was similar between the thyroid cancer and control groups (unadjusted hazard ratio (HR): 0.98; 95% confidence interval (CI): 0.88C1.10); the adjusted HR was 1.07 (95% CI: 0.95C1.20) after multivariate adjustment for age, gender, history of CVD, hyperlipidemia, diabetes mellitus, hypertension, and occupation. The risk of other malignancy-related mortality was comparable between two groups. CVD mortality risk was lower in the thyroid cancer group, with an unadjusted HR of 0.51 (95% CI: 0.38C0.69) and adjusted HR of 0.56 (95% CI: 0.42C0.76). In conclusion, patients with thyroid cancer had excellent overall survival. Thyroid cancer-specific mortality was the leading cause of death, highlighting the importance of thyroid cancer management. Thyroid cancer patients had lower CVD mortality risk than the general population.
Survival and Death Causes in Thyroid Cancer in Taiwan: A Nationwide CaseCControl Cohort Study
We propose an adaptation of Urie Bronfenbrenners bioecological theory, neo-ecological theory. As bioecological theory was developed in the 20(th) century, it requires significant modifications to reflect some of the most ubiquitous contexts in which adolescents learn, play, and growthe technological and virtual ones. Although several scholars have developed laudable theories related to youth development in virtual contexts, the field lacks an overarching theory to address the intersection of development and technology. In developing neo-ecological theory, we hold true to the tenets of bioecological theory, but suggest key modifications to reflect our technologized world. We delineate a key alteration to the microsystem, namely the existence of two types of microsystemsphysical and virtual. In addition, we emphasize the importance of macrosystemic influences (i.e., the influences of culture and within-society subcultural variation) in understanding development in the digital age. The implications of these modifications cascade across the Process-Person-Context-Time (PPCT) model; proximal processes, person characteristics, context, and time are all reexamined. In the digital age, virtual microsystems are central contexts in which youth engage in proximal processes. As such, we believe that all scholars of development, regardless of their specific research interests, should consider the ways digital contexts influence their outcomes of interest. Without it, practitioners, policy makers, parents, and technologists will be in the dark about how best to support adolescents.
Technologizing Bronfenbrenner: Neo-ecological Theory
This work provides an analysis on the potential of aggregate and anonymised mobility data from mobile phones to explain the recent COVID-19 outbreak in Europe. The data were processed by the European Commission in collaboration with EU Mobile Network Operators (MNOs) to improve the quality of modelling and forecasting for the pandemic at EU level. Connectivity matrices derived from MNOs at EU scale can help the understanding of the initial dynamics of the spread. This work is expected to provide input to epidemiological modelling in informing policies on de-escalation of control measures and recovery. Connectivity data between administrative areas can also be used to estimate impacts and spread of future outbreaks. A case study of France shows that mobility alone can explain from 52% up to 92% of the initial spread of the virus, while there is no effect before the outbreak, and has a slow decay effect after lockdown measures are effective. It also emerges that internal mobility is more important than mobility across geographical departments.
Explaining the Initial Spread of COVID-19 using Mobile Positioning Data: a Case Study
Here, we describe a combination strategy of black phosphorus (BP)-based photothermal therapy together with anti-CD47 antibody (aCD47)-based immunotherapy to synergistically enhance cancer treatment. Tumour resistance to immune checkpoint blockades in most cancers due to immune escape from host surveillance, along with the initiation of metastasis through immunosuppressive cells in the tumour microenvironment, remains a significant challenge for cancer immunotherapy. aCD47, an agent for CD47/SIRP axis blockade, induces modest phagocytic activity and a low response rate for monotherapy, resulting in failures in clinical trials. We showed that BP-mediated ablation of tumours through photothermal effects could serve as an effective strategy for specific immunological stimulation, improving the inherently poor immunogenicity of tumours, which is particularly useful for enhancing cancer immunotherapy. BP in combination with aCD47 blockade activates both innate and adaptive immunities and promotes local and systemic anticancer immune responses, thus offering a synergistically enhanced effect in suppression of tumour progression and in inducing abscopal effects for inhibition of metastatic cancers. Our combination strategy provides a promising platform in which photothermal agents could help to enhance the therapeutic efficacy of immunotherapy.
Black phosphorus-based photothermal therapy with aCD47-mediated immune checkpoint blockade for enhanced cancer immunotherapy
Background: Herpes simplex virus (HSV) is usually dormant and becomes apparent when body conditions decline. We investigated the anti-HSV activity of various natural and synthetic compounds for future clinical application. Methods: Mock- and HSV-infected Vero cells were treated for three days with various concentrations of samples. For short exposure, 100-fold concentrated virus were preincubated for 3 min with samples, diluted to normal multiplicity of infection (MOI), before the addition to the cells. Anti-HSV activity was evaluated by the chemotherapy index. Results: Alkaline extracts of the leaves of Sasa sp. (SE) and pine cone (PCE) showed higher anti-HSV activity than 20 Japanese traditional herb medicines (Kampo formulas), four popular polyphenols, and 119 chromone-related compounds. Exposure of HSV to SE or PCE for 3 min almost completely eliminated the infectivity of HSV, whereas much longer exposure time was required for Kakkonto, the most active Kampo formulae. Anti-HSV activity of PCE and Kakkonto could be detected only when they were dissolved by alkaline solution (pH 8.0), but not by neutral buffer (pH 7.4). Anti-HSV activity of SE and povidone iodine was stable if they were diluted with neutral buffer. Conclusions: The present study suggests the applicability of SE and PCE for treatment of oral HSV and possibly other viruses.
Quantification of the Ability of Natural Products to Prevent Herpes Virus Infection
BACKGROUND: In the case of people who carry an increased number of anxiety traits and maladaptive coping strategies, psychosocial stressors may further increase the level of perceived stress they experience. In our research study, we aimed to examine the levels of perceived stress and health anxiety as well as coping styles among university students amid the COVID-19 pandemic. METHODS: A cross-sectional study was conducted using an online-based survey at the University of Debrecen during the official lockdown in Hungary when dormitories were closed, and teaching was conducted remotely. Our questionnaire solicited data using three assessment tools, namely, the Perceived Stress Scale (PSS), the Ways of Coping Questionnaire (WCQ), and the Short Health Anxiety Inventory (SHAI). RESULTS: A total of 1320 students have participated in our study and 31 non-eligible responses were excluded. Among the remaining 1289 participants, 948 (73.5%) and 341 (26.5%) were Hungarian and international students, respectively. Female students predominated the overall sample with 920 participants (71.4%). In general, there was a statistically significant positive relationship between perceived stress and health anxiety. Health anxiety and perceived stress levels were significantly higher among international students compared to domestic ones. Regarding coping, wishful thinking was associated with higher levels of stress and anxiety among international students, while being a goal-oriented person acted the opposite way. Among the domestic students, cognitive restructuring as a coping strategy was associated with lower levels of stress and anxiety. Concerning health anxiety, female students (domestic and international) had significantly higher levels of health anxiety compared to males. Moreover, female students had significantly higher levels of perceived stress compared to males in the international group, however, there was no significant difference in perceived stress between males and females in the domestic group. CONCLUSION: The elevated perceived stress levels during major life events can be further deepened by disengagement from home (being away/abroad from country or family) and by using inadequate coping strategies. By following and adhering to the international recommendations, adopting proper coping methods, and equipping oneself with the required coping and stress management skills, the associated high levels of perceived stress and anxiety could be mitigated.
Health anxiety, perceived stress, and coping styles in the shadow of the COVID-19
Despite seasonal influenza vaccines having been routinely used for many decades, influenza A virus continues to pose a global threat to humans, causing high morbidity and mortality each year. The effectiveness of the vaccine is largely dependent on how well matched the vaccine strains are with the circulating influenza virus strains. Furthermore, low vaccine efficacy in na?ve populations such as young children, or in the elderly, who possess weakened immune systems, indicates that influenza vaccines need to be more personalized to provide broader community protection. Advances in both vaccine technologies and our understanding of influenza virus infection and immunity have led to the design of a variety of alternate vaccine strategies to extend population protection against influenza, some of which are now in use. In this review, we summarize the progress in the field of influenza vaccines, including the advantages and disadvantages of different strategies, and discuss future prospects. We also highlight some of the challenges to be faced in the ongoing effort to control influenza through vaccination.
Selecting and Using the Appropriate Influenza Vaccine for Each Individual
Background: In November 2020, the U.S. Food and Drug Administration (FDA) issued emergency use authorization (EUA) for monoclonal antibody (mAb) therapy in patients with mild to moderate COVID-19 who are at high risk for disease progression. These mAbs reduce the risk of hospitalization in the general population. However, its efficacy and safety in immunocompromised hematology patients are not known. Methods: From November 9th, 2020, until February 28th, 2021, all adult hematology patients with mild to moderate COVID-19 disease who received monoclonal antibodies within 10 days of symptoms onset were included. Patients who were asymptomatic, had severe or critical COVID-19 disease, or were hospitalized at the time of COVID-19 diagnosis were excluded. Baseline demographic, clinical outcomes, and hematologic-related data were extracted. All statistical analysis was performed using SAS statistical software. Results: Thirty-eight hematology patients with mild to moderate COVID-19 disease who received mAb therapy under EUA were included in this study. Thirty (79%) patients received bamlanivimab and 8 (21%) casirivimab-imdevimab. Baseline characteristics prior to mAB administration include: 53% female, median age of 51 years (range: 21-80), with 18% above 65 years old. Twenty-eight (74%) patients received cellular therapy: 18 (47%) had undergone allogeneic hematopoietic cell transplantation (HCT), 9 (24%) autologous HCT, and 1 (3%) chimeric antigen receptor T-cell (CAR T) therapy. Among the 17 patients who had COVID-19 disease after HCT, the median time to COVID-19 diagnosis was 22.8 months (range: 2.6-274.4) from HCT to COVID-19 diagnosis. Twelve out of 17 (71%) alloHCT patients were being managed for active graft-vs-host disease (GvHD) at the time of COVID-19 diagnosis (chronic GVHD: n=11 [mild: 4, moderate: 4, severe: 3], acute GVHD (grade 2): n=1). Ten (59%) alloHCT patients were on immunosuppressant therapy at the time of COVID-19 diagnosis. Fifteen (39%) patients were on active treatment for their hematologic malignancy (HM) at the time of COVID-19 diagnosis with a mean of 3 previous lines of treatment (range: 1-6). Additional patient characteristics are shown in Table 1. mAb therapy under EUA was well tolerated in this patient population with only 1 (3%) patient having experienced an adverse reaction characterized as headache. Four (11%) patients were hospitalized due to COVID-19, and 2 (5%) progressed to severe disease. All four patients had received bamlanivimab. The median time for hospitalization from diagnosis of COVID-19 to admission date was 8 days (range: 1-20) while median time from mAB infusion to hospitalization was 7.5 days (range: 0-17). One patient (3%) died within 30 days of COVID-19 diagnosis; the cause of death was COVID-19 disease. Most patients (n=34, 89%) ultimately tested negative for SARS-CoV-2 by PCR after mAb infusion. 34% of patients (n=13) cleared the virus within 2 weeks of receiving mAb infsuion. The median time to clearance of viral shedding was 25.5 days (range: 7-138). After mAb infusion, most patients (10/15; 67%) who were previously on active treatment for HM prior to diagnosis of COVID-19 resumed therapy for their HM with a median delay of 21.5 days (range: 12-42). We observed a significant difference in hospitalization was amongst patients who received a HCT vs. non-HCT (0%, 0/26 and 36%, 4/11 respectively; p<0.01). None of the other patient characteristics, which included: gender, ethnicity, age, BMI, smoking, obesity, chronic kidney disease, diabetes mellitus, hypertension, coronary vascular disease, and lung disease, were associated with significantly increased rate of hospitalization. Conclusion: This study demonstrates that SARS-COV2 specific mAb use in malignant hematology patients under EUA was safe and may reduce hospitalization as reported in the literature amongst those at high risk for disease progression. Thus, the access to SARS-COV2 mAb in this population who is at increased risk for complications from SARS-COV2 infection is critical in reducing progression to severe COVID-19 disease and hospitalization. Figure 1 Disclosures Ali: Incyte: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; CTI BioPharma: Membership on an entity's Board of Directors or advisory committees; BMS: Speakers Bureau. Aribi: Seagen: Consultancy. Artz: Radiology Partners: Other: Spouse has equity interest in Radiology Partners, a private radiology physician practice. Koller: Novartis: Consultancy. Nikolaenko: Rafael Pharmaceuticals: Research Funding; Pfizer: Research Funding. Shouse: Beigene: Honoraria; Kite Pharma: Speakers Bureau. Stein: Amgen: Consultancy, Speakers Bureau; Celgene: Speakers Bureau; Stemline: Speakers Bureau. Marcucci: Abbvie: Other: Speaker and advisory scientific board meetings; Novartis: Other: Speaker and advisory scientific board meetings; Agios: Other: Speaker and advisory scientific board meetings. Forman: Mustang Bio: Consultancy, Current holder of individual stocks in a privately-held company; Lixte Biotechnology: Consultancy, Current holder of individual stocks in a privately-held company; Allogene: Consultancy. Dadwal: AlloVir: Research Funding; Merck: Consultancy, Membership on an entity's Board of Directors or advisory committees, Research Funding, Speakers Bureau; Astellas: Speakers Bureau; Shire/Takeda: Research Funding; Aseptiscope: Consultancy; Janssen: Other: Investigator; Karius: Other: Investigator. Al Malki: CareDx: Consultancy; Rigel Pharma: Consultancy; Jazz Pharmaceuticals, Inc.: Consultancy; Neximmune: Consultancy; Hansa Biopharma: Consultancy.
Use of Monoclonal Antibody Therapy in Hematologic Patients with Mild-to-Moderate COVID-19: A Retrospective Single-Center Experience
Infectious bronchitis virus (IBV) has a variety of serotypes with relatively limited cross-protection leading the disease to be a major problem in the poultry industry The IBV 793/B strain has identified to circulate in Iran;therefore, the development of a specific vaccine to protect against the virulent virus has received attention In this regard, the live IB 793/B vaccine (793/B 08IR) was developed in the Razi Vaccine and Serum Research Institute In this study, the immunogenicity of 793/B 08IR vaccine via different routes of vaccination and efficacy of the vaccine were determined in specific-pathogen-free (SPF) chickens Three treatment groups of 10 SPF chickens received the vaccine via eye drops, spray, and drinking water The sera were collected from the chicks at 3 and 6 weeks after the vaccination, and IBV specific antibody was measured using enzyme-linked immunosorbent assay (ELISA) and serum neutralization (SN) test To evaluate 793/B 08IR vaccine efficacy, 10 SPF chickens were vaccinated using eye drops Moreover, 10 unvaccinated chickens were separately retained as negative controls The birds were challenged with the virulent virus 3 weeks following the vaccination Five days after the challenge, the tracheal swab was taken for virus reisolation In the immunogenicity test, the ELISA titers of three vaccinated groups were significantly higher than the background values obtained in the control group (p0 0001) The mean value of ELISA titer in the spray vaccinated group was higher than the spray and drinking water vaccinated groups 3 weeks following the vaccination;however, the difference was not statistically significant No differences were observed in antibody titers among the three vaccinated groups 6 weeks after the vaccination The results of the SN test confirmed the data obtained from the ELISA The results of antibody titer and its increasing trend in chickens showed that 793/B 08IR vaccine induce proper immunity against the virus In the efficacy test, IBV was isolated from 90% of the unvaccinated controls and 10% of vaccinated groups The results of the recovery of the virus after the challenge showed that 793/B 08IR vaccine can provide a significantly improved protection against the pathogen in SPF vaccinated chickens
Immunogenicity and Efficacy of Live Infectious Bronchitis 793/b08IR Vaccine in SPF Chickens
BACKGROUND: Obesity and being overweight are major contributing factors for many diseases. Calorie restricted diets often fail to result in sustained long-term weight loss. Very lowCcarbohydrate, high-fat ketogenic diets have been suggested to have superior metabolic and weight loss effects. Keyto is a low-cost, highly scalable mobile health (mHealth) app paired with a noninvasive biofeedback tool aimed at facilitating weight loss through a personalized healthy and predominantly plant- and fish-based ketogenic diet. OBJECTIVE: This protocol describes a randomized trial comparing the efficacy of the Keyto mHealth app and device intervention to that of Weight Watchers WW app in individuals who are overweight or obese. The primary outcome is weight loss after 12 weeks. Secondary and exploratory outcomes, including metabolic and cardiovascular risk factors, will be assessed at 12, 24, and 48 weeks. METHODS: A total of 144 participants will be recruited and randomized to either the Keyto program or Weight Watchers program. Study participants will be guided through the study via video conference or phone calls and will undergo a fasting blood analysis performed by a third-party diagnostic lab at weeks 0 and 12 to assess metabolic and cardiovascular risk markers. All participants will be asked to weigh themselves daily on a study-provided Bluetooth-enabled scale. Participants randomized to the Keyto arm will also be asked to measure their breath acetone levels, a measure of ketosis, with the Keyto device 3 times per day. RESULTS: Recruitment started in December 2019. Rolling recruitment is expected to be completed by July 2020. Data collection and analysis of the primary intervention phase is expected to be completed in October 2020. The 24- and 48-week follow-ups are expected to be completed in January 2021 and July 2021, respectively. CONCLUSIONS: This trial will provide high-quality evidence regarding the efficacy of the Keyto weight loss program in individuals who are overweight and obese in a free-living condition. This study also fills a gap by examining the impact of a ketogenic diet emphasizing plant- and fish-based fats on blood lipid profile and cardiovascular disease risk. TRIAL REGISTRATION: ClinicalTrials.gov NCT04165707; https://clinicaltrials.gov/ct2/show/NCT04165707. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/19053
Comparing the Keyto App and Device with Weight Watchers WW App for Weight Loss: Protocol for a Randomized Trial
FUNDING ACKNOWLEDGEMENTS: Type of funding sources: Private company. Main funding source(s): Study sponsored by DiA Imaging Analysis BACKGROUND: The assessment of the right ventricular (RV) function is an essential part of every transthoracic echocardiographic examination. It plays an important role in the diagnosis and management of many diseases and conditions. In covid-19 patients, there is evidence showing that enlarged RV and abnormal Free Wall Strain (FWS) correlate with high mortality. Assessment of the RV in the Point of Care settings can assist the differential diagnosis and provide important clinical information in early stages, close to the onset of symptoms, however, it is done qualitatively by visual estimation and thus subjective and requires high level of expertise. The presented study aims to validate the use of a novel artificial intelligence tool (LVivo RV by DiA imaging analysis) that uses deep learning and image processing algorithms to automatically evaluate RV size and function from apical 4 chamber (4CH) focused or modified ultrasound clips. METHODS: A retrospective study of 100 patients who underwent routine echocardiographic examination was conducted in three medical centers in US and Israel. The apical 4CH focused or modified clips were interpreted by experts to evaluate RV size and function. The End Diastolic Area (EDA) measured manually by two sonographers and the FWS measured by semi-automated Velocity Vector Imaging software (VVI by Siemens) were compared to the same parameters obtained automatically by the LVivo RV, using linear regression and Bland Altman analysis. RESULTS: 100 cases were included, 39% females and 61% males. Mean age was 64.7 [19-92]. Mean BMI was 28.1 [6.8-17.6]. 74% had pulmonary hypertension and 19% had lung disease. 36% were considered abnormal by their fractional area change values and 64% were considered normal. Three cases were non-interpretable by the physicians thus excluded from the analysis. The LVivo RV was able to process 99% of the cases. Excellent correlation was obtained for EDA between the sonographers" average of manual measurements and the automated EDA by LVivo RV with r = 0.92 (p < 0.0001, 95%CI 0.88-0.94). The bias and limits of agreement for EDA were 0.87 5.76cm^2. For FWS, 4 cases were manually excluded due to insufficient image quality. The Bland Altman analysis for FWS showed small bias and limits of agreement of 0.7 12.2%. A very good correlation of r= 0.78, (95% CI 0.69-0.85) was found, indicating good compatibility between the methods. The specificity and sensitivity for FWS were 80% and 77% respectively, using an optimal cutoff value of -16%, and the overall agreement was 79%. CONCLUSIONS: The performance of LVivo RV demonstrated a very good agreement with manual and semi-automated quantitative methods for RV assessment. LVivo RV provides fast, accurate, objective and reproducible results and has the potential to be used at the Point of Care settings as a powerful tool for RV size and function evaluation.
Validation of an artificial intelligence-based tool for automated evaluation of RV size and function from ultrasound examinations
The purpose of the present study was to investigate the pharmacological effect of Fisetin on experimental periodontitis in rats and explore its potential mechanism. The ligature/LPS method was used to induce periodontitis in rats. LPS was employed to cause inflammation in Human gingival fibroblasts (HGF). The transfections with FGFR1 SiRNA, NLRP3 SiRNA and the selective TLR4 inhibitor TAK242 were used to investigate the mechanism of Fisetin-mediated inflammatory reaction in LPS-induced HGF. As a result, Fisetin reduced the alveolar bone gap, reversed histopathological lesion and inhibited serum inflammatory cytokine concentration in periodontitis rats. Fisetin decreased the inflammatory cytokine contents in the supernatant of LPS-induced HGF. The inhibitory effect of Fisetin might be attributed to FGFR1/TLR4/NLRP3 inflammasome pathway both in vivo and in vitro. The suppressions of FGFR1, TLR4 and NLRP3 proved that FGFR1/TLR4/NLRP3 signaling was involved in the Fisetin-mediated inflammatory response. Fisetin also inhibited NLRP3 priming. The data demonstrated that Fisetin attenuated periodontitis by inhibiting inflammatory reaction via FGFR1/TLR4/NLRP3 inflammasome pathway.
Fisetin attenuates periodontitis through FGFR1/TLR4/NLRP3 inflammasome pathway
Because of the threat that Covid-19 poses to incarcerated populations, executives around the world have used their clemency powers to commute sentences and grant freedom to prisoners in high-risk categories. Coronavirus pardons may be justified on several theories of punishment and have been exercised alongside bureaucratic forms of legal mercy such as parole and compassionate release. Although executive clemency is residual in most legal systems, the novel coronavirus has reactivated the pardon power in many jurisdictions, overcoming significant legal and procedural barriers, albeit with exclusions for particular crimes and categories of offender. This article relays recent global trends in executive clemency granted as a result of Covid-19, drawing out relevant lessons for the academic literature on the topic, as well as for policymakers dealing with future pandemics and other emergencies.
Executive Clemency During the Coronavirus Pandemic: A Global Analysis of Law and Practice
BACKGROUND: Mobile health (mHealth) interventions for weight management can result in weight loss outcomes comparable to in-person treatments. However, there is little information on implementing these treatments in real-world settings. OBJECTIVE: This work aimed to answer two implementation research questions related to mHealth for weight management: (1) what are barriers and facilitators to mHealth adoption (initial use) and engagement (continued use)? and (2) what are patient beliefs about the appropriateness (ie, perceived fit, relevance, or compatibility) of mHealth for weight management? METHODS: We conducted semistructured interviews with patients with obesity at a single facility in an integrated health care system (the Veterans Health Administration). All participants had been referred to a new mHealth program, which included access to a live coach. We performed a rapid qualitative analysis of interviews to identify themes related to the adoption of, engagement with, and appropriateness of mHealth for weight management. RESULTS: We interviewed 24 veterans, seven of whom used the mHealth program. Almost all participants were 45 years of age and two-thirds were White. Rapid analysis identified three themes: (1) coaching both facilitates and prevents mHealth adoption and engagement by promoting accountability but leading to guilt among those not meeting goals; (2) preferences regarding the mode of treatment delivery, usability, and treatment content were barriers to mHealth appropriateness and adoption, including preferences for in-person care and a dislike of self-monitoring; and (3) a single invitation was not sufficient to facilitate adoption of a new mHealth program. Themes were unrelated to participants age, race, or ethnicity. CONCLUSIONS: In a study assessing real-world use of mHealth in a group of middle-aged and older adults, we found thatdespite free access to mHealth with a live coachmost did not complete the registration process. Our findings suggest that implementing mHealth for weight management requires more than one information session. Findings also suggest that focusing on the coaching relationship and how users lives and goals change over time may be an important way to facilitate engagement and improved health. Most participants thought mHealth was appropriate for weight management, with some nevertheless preferring in-person care. Therefore, the best way to guarantee equitable care will be to ensure multiple routes to achieving the same behavioral health goals. Veterans Health Administration patients have the option of using mHealth for weight management, but can also attend group weight management programs or single-session nutrition classes or access fitness facilities. Health care policy does not allow such access for most people in the United States; however, expanded access to behavioral weight management is an important long-term goal to ensure health for all.
Adoption and Appropriateness of mHealth for Weight Management in the Real World: A Qualitative Investigation of Patient Perspectives
Continuity and security includes people with intellectual and developmental disabilities (IDD) not only having resources to meet their basic needs, but also includes the amount of change and disruption people have in their lives and the control they have over that change. We explored the impact of continuity and security on people with IDD's (n = 325) quality of life by analyzing Personal Outcome Measures interviews. Continuity and security not only significantly increased overall quality of life, but it also positively impacted two thirds of the different outcomes, ranging from health to relationships to rights. A stronger community infrastructure is needed to promote the continuity and security, and, by extension, quality of life of people with IDD.
The Impact of Continuity and Security on Quality of Life.
PURPOSE: To present a reproducible methodology for building an anatomy mimicking phantom with targeted T1 and T2 contrast for use in quantitative magnetic resonance imaging. METHODS: We propose a reproducible method for creating high-resolution, quantitative slice phantoms. The phantoms are created using gels with different concentrations of NiCl2 and MnCl2 to achieve targeted T1 and T2 values. We describe a calibration method for accurately targeting anatomically realistic relaxation pairs. In addition, we developed a method of fabricating slice phantoms by extruding 3D printed walls on acrylic sheets. These procedures are combined to create a physical analog of the Brainweb digital phantom. RESULTS: With our method, we are able to target specific T1 /T2 values with less than 10% error. Additionally, our slice phantoms look realistic since their geometries are derived from anatomical data. CONCLUSION: Standardized and accurate tools for validating new techniques across sequences, platforms, and different imaging sites are important. Anatomy mimicking, multi-contrast phantoms designed with our procedures could be used for evaluating, testing, and verifying model-based methods.
Quantitative anatomy mimicking slice phantoms