The biopsychosocial factors associated with development of chronic musculoskeletal pain. An umbrella review and meta-analysis of observational systematic reviews.

AIM: The aim of this umbrella review was to establish which biopsychosocial factors are associated with development of chronic musculoskeletal pain. METHODS: Ovid Medline, Embase, Web of Science Core Collection, Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects, PsycINFO, CINAHL, PEDro, PROSPERO, Google Scholar and grey literature were searched from database inception to 4th April 2023. Systematic reviews of observational prospective longitudinal studies, including populations with <3 months (not chronic) musculoskeletal pain, investigating biopsychosocial factors that contribute to development of chronic (>3 months) musculoskeletal pain. Two reviewers searched the literature, assessed risk of bias (Assessing the Methodological Quality of Systematic Reviews-2), and evaluated quality (Grading of Recommendations, Assessment, Development and Evaluation) to provide an overall statement on the certainty of evidence for each biopsychosocial factor. Data analysis was performed through random effects meta-analysis (including meta-analysis of meta-analyses where possible) and descriptive synthesis. RESULTS: 13 systematic reviews were included comprising 185 original research studies (n = 489,644 participants). Thirty-four biopsychosocial factors are associated with development of chronic musculoskeletal pain. Meta-analyses of odds and/or likelihood ratios were possible for 25 biopsychosocial factors. There is moderate certainty evidence that smoking (OR 1.24 [95%CI, 1.14-1.34), fear avoidance (LR+ 2.11 [95%CI, 1.59-2.8]; LR- 0.5 [95%CI, 0.35-0.71]) poorer support networks (OR 1.21 [95%CI, 1.14-1.29]), lower socioeconomic status (OR 2.0 [95%CI, 1.64-2.42]), and high levels of pain (OR 5.61 [95%CI, 3.74-8.43]) are associated with development of chronic musculoskeletal pain (all P<0.001). Remaining factors are of low or very low certainty evidence. CONCLUSIONS AND RELEVANCE: There is moderate certainty evidence that smoking, fear avoidance, poorer support networks, lower socioeconomic status, and high levels of pain are associated with development of chronic musculoskeletal pain. High risk of bias was evident in most included reviews; this highlights the need for higher quality systematic reviews.

CPAP Versus NIPPV Postextubation in Preterm Neonates: A Comparative-Effectiveness Study.

BACKGROUND AND OBJECTIVES: Nasal intermittent positive pressure ventilation (NIPPV) has been shown to be superior to nasal continuous positive airway pressure (CPAP) postextubation in preterm neonates. However, studies have not permitted high CPAP pressures or rescue with other modes. We hypothesized that if CPAP pressures >8 cmH2O and rescue with other modes were permitted, CPAP would be noninferior to NIPPV. METHODS: We conducted a pragmatic, comparative-effectiveness, noninferiority study utilizing network-based real-world data from 22 Canadian NICUs. Centers self-selected CPAP or NIPPV as their standard postextubation mode for preterm neonates <29 weeks' gestation. The primary outcome was failure of the initial mode ≤72 hours. Secondary outcomes included failure ≤7 days, and reintubation ≤72 hours and ≤7 days. Groups were compared using a noninferiority adjusted risk-difference (aRD) margin of 0.05, and margin of no difference. RESULTS: A total of 843 infants extubated to CPAP and 974 extubated to NIPPV were included. CPAP was not noninferior (and inferior) to NIPPV for failure of the initial mode ≤72 hours (33.0% vs 26.3%; aRD 0.07 [0.03 to 0.12], Pnoninferiority(NI) = .86), and ≤7 days (40.7% vs 35.8%; aRD 0.09 [0.05 to 0.13], PNI = 0.97). However, CPAP was noninferior (and equivalent) to NIPPV for reintubation ≤72 hours (13.2% vs 16.1%; aRD 0.01 [-0.05 to 0.02], PNI < .01), and noninferior (and superior) for reintubation ≤7 days (16.4% vs 22.8%; aRD -0.04 [-0.07 to -0.001], PNI < .01). CONCLUSIONS: CPAP was not noninferior to NIPPV for failure ≤72 hours postextubation; however, it was noninferior to NIPPV for reintubation ≤72 hours and ≤7 days. This suggests CPAP may be a reasonable initial postextubation mode if alternate rescue strategies are available.

Can an AI-carebot be filial? Reflections from Confucian ethics.

This article discusses the application of artificially intelligent robots within eldercare and explores a series of ethical considerations, including the challenges that AI (Artificial Intelligence) technology poses to traditional Chinese Confucian filial piety. From the perspective of Confucian ethics, the paper argues that robots cannot adequately fulfill duties of care. Due to their detachment from personal relationships and interactions, the "emotions" of AI robots are merely performative reactions in different situations, rather than actual emotional abilities. No matter how "humanized" robots become, it is difficult to establish genuine empathy and a meaningful relationship with them for this reason. Even so, we acknowledge that AI robots are a significant tool in managing the demands of elder care and the growth of care poverty, and as such, we attempt to outline some parameters within which care robotics could be acceptable within a Confucian ethical system. Finally, the paper discusses the social impact and ethical considerations brought on by the interaction between humans and machines. It is observed that the relationship between humans and technology has always had both utopian and dystopian aspects, and robotic elder care is no exception. AI caregiver robots will likely become a part of elder care, and the transformation of these robots from "service providers" to "companions" seems inevitable. In light of this, the application of AI-augmented robotic elder care will also eventually change our understanding of interpersonal relationships and traditional requirements of filial piety.

Nicotine Vaping Expectancies: Organization and Activation in Memory Based on Vaping Use Patterns.

OBJECTIVE: Prevalence of smoking combustible cigarettes has decreased, but rates of nicotine vaping among adolescents and young adults have increased dramatically. Vaping is associated with acute health problems and exposes users to toxic metals with unknown long-term consequences. Research on factors influencing vaping is needed to inform development of effective prevention and intervention methods. Nicotine vaping expectancies, or expected effects related to vaping, may be an important target as they can predict vaping behaviors. The purpose of this study was to examine nicotine expectancy activation patterns with corresponding nicotine vaping behaviors. METHOD: Using methods from alcohol expectancy research, we applied a memory model approach to identifying nicotine vaping expectancies and modeling organization and activation patterns in relation to frequency of nicotine vaping. We created a memory model-based nicotine expectancy measure based on information from 200 adolescents in 8th and 12th grades, and 429 college students. Our expectancy measure was completed by a second sample of 862 college students. RESULTS: We mapped expectancies into network format using Individual Differences Scaling (INDSCAL) and we modeled likely paths of expectancy activation using Preference Mapping (PREFMAP). Non-users primarily emphasized a positive-negative expectancy dimension and were more likely to activate expectancies of negative internal experiences in relation to vaping. Students who vaped nicotine daily or almost daily primarily emphasized an external appearance-internal experience expectancy dimension and were more likely to activate expectancies of negative affect reduction and withdrawal relief. CONCLUSIONS: Our results identify specific targets for expectancy-based prevention and intervention methods that have the potential to be as effective as similar approaches to preventing and reducing alcohol use.

Quality Characteristics of Twelve Advanced Lines of Avena magna ssp. domestica Grown in Three Contrasting Locations in Morocco.

The popularity of oats (Avena sativa) continues to increase in the cereal market due to their health benefits. The recent domestication of Avena magna, a Moroccan oat, presents an opportunity to enhance these benefits due to their higher nutritional composition. As the impact of microclimates on A. magna grain composition has not been explored, this study evaluates twelve A. magna ssp. domestica lines across three Moroccan locations, providing new data into microclimate effects on key grain characteristics. Significant variability is observed among lines and sites for nutrients, with mean protein, fat, and dietary fiber contents at 23.1%, 8.38%, and 7.23%, respectively. High protein levels, reaching 27.1% in Alnif and 26.5% in El Kbab, surpass the 'Avery' control (21.7% and 24.2%) in these environments. Groats from Bouchane exhibited elevated fat and fiber contents (10.2% and 9.94%) compared to the control (8.83% and 7.36%). While ß-glucan levels remain consistent at 2.53%, a negative correlation between protein content, fat, and starch was observed. A. magna lines exhibited higher levels of iron (7.50 × 10-3 g/100 g DM) and zinc (3.40 × 10-3 g/100 g DM) compared to other cereals. Environmental conditions significantly influence grain quality, with El Kbab yielding higher protein and ash contents, as well as Bouchane having increased fat, fiber, and starch. Stability analysis indicates that fat content was more influenced by the environment, while 25% of protein variability is influenced by genetics. Lines AT3, AT5, AT6, AT13, and AT15 consistently exceeds both the mean for protein and fiber across all sites, emphasizing their potential nutritional value. This study highlights the potential of A. magna ssp. domestica to address nutritional insecurity, particularly for protein, iron, and zinc in domestic settings.

The myth of translational bioethics.

In recent years, the case has been made for special attention to be paid to a branch of research in the field of bioethics called 'translational bioethics'. In this paper, we start by considering some of the assumptions that those advancing translational approaches to bioethics make about bioethics and compare them to the reality of bioethics as an academic field. We move on to explain how those who make this case, implicitly or explicitly, for translational bioethics go awry because of how they understand the 'gap' between bioethical inquiry and practical settings that requires bridging. We consider three interpretations of this 'translation gap' in bioethics: (i) the gap between theory and practice, (ii) the gap between the force of normative claims and practical contextual realities and (iii) the gap between relevance or applicability to practice and actual application or implementation in practice. In each case, we show how a proper understanding of the nature of the academic field of bioethics undermines how these gaps have been formulated, and how any need for talk of 'translational bioethics' is removed.

Extraintestinal Manifestations and Family History of Inflammatory Bowel Disease Increase the Risk of Pouchitis in a State-Level Epidemiology Study.

INTRODUCTION: Our understanding of the epidemiology of inflammatory conditions of the pouch and effectiveness of treatment is largely based on selected populations. We created a state-level registry to evaluate the incidence of pouchitis and the effectiveness of treatments used in an initial episode of pouchitis. METHODS: In a state-level retrospective cohort of all patients undergoing proctocolectomy with ileal pouch-anal anastomosis (IPAA) for ulcerative colitis between January 1, 2018, and December 31, 2020, we evaluated the incidence of pouchitis and compared the proportion of patients developing recurrent pouchitis and chronic antibiotic-dependent pouchitis according to initial antibiotic therapy. RESULTS: A total of 177 patients underwent surgery with 49 (28%) developing pouchitis within the 12 months after the final stage of IPAA. Patients with extraintestinal manifestations of inflammatory bowel disease (IBD) were significantly more likely to develop pouchitis within the first 12 months after IPAA (adjusted odds ratio 2.45, 95% confidence interval 1.03-5.81) after adjusting for family history of IBD (adjusted odds ratio 3.50, 95% 1.50-8.18). When comparing the proportion of patients who developed recurrent pouchitis or chronic antibiotic-dependent pouchitis with those who experienced an isolated episode of pouchitis, there were no significant differences among the initial antibiotic regimens used. DISCUSSION: In a state-level examination of outcomes after IPAA for ulcerative colitis, patients with extraintestinal manifestations of IBD were more likely to develop pouchitis; however, the initial antibiotic regimen chosen did not seem to affect long-term outcomes.

Increasing optimal coagulation factor dosing in the paediatric emergency department: Update to a quality improvement study.

INTRODUCTION: Prompt, appropriate coagulation factor replacement according to injury and bleeding severity in persons with haemophilia is required to prevent acute and long-term complications. AIMS: Increase proportion of persons with haemophilia A (HA) and B (HB) treated appropriately for an acute injury and bleeding episode at a tertiary children's emergency department (ED) from 65% to 85% and sustain for one year. Secondary aim: increase time interval between patient ED encounters with out-of-range factor dosing. METHODS: Utilizing quality improvement methodology and plan-do-study-analyze cycles, ED encounters for individuals with HA/HB receiving coagulation factor replacement for injuries were audited for in-range coagulation factor dosing. Goal factor dose defined as 50% correction for minor bleeds and 100% correction for major bleeds. Optimal dosing range defined as 90%-120% of the calculated goal dose to account for vial size variability. Interventions targeted communication via the EMR problem list and optimization of physician education. RESULTS: Our previous publication demonstrated 33.3% of ED encounters with out-of-range factor replacement. Following several interventions, the cumulative rate of encounters with out-of-range dosing decreased to 18%. Overall, there was an increase in the mean percent of encounters receiving optimal factor dosing for both HA/HB compared to baseline (82.2% vs. 71.1%), though this was not a statistically significant difference. CONCLUSION: Despite implementation of multiple interventions, out-of-range factor dosing continues to occur. Our team plans to reinstate simulation center education for ED staff and continue education efforts of pharmacists and hematology trainees with the goal of further reducing out-of-range dosing in our ED.

College Student Alcohol Use: Understanding the Role of Alcohol Expectancies, Social Anxiety, Social Connectedness, and Need to Belong.

ObjectiveCollege students consume more alcohol and engage in binge drinking more frequently than their non-college attending peers, and prevalence of alcohol-related consequences (e.g., drinking and driving; taking avoidable risks) has not decreased proportionally with decreases in consumption. Social anxiety and alcohol expectancies, or beliefs about the effects of alcohol, have been found to be significantly related to alcohol use and account for significant variance in alcohol use and related consequences. Few studies, however, have examined how other social variables such as need to belong and social connectedness may fit into existing models of increased and risky alcohol use. Methods: Students at a large state university (n = 1,278) completed an online survey measuring alcohol expectancies, need to belong, social anxiety, and social connectedness. Mean age of participants was 19.65 years, and 59.5% self-identified as female, 39.8% male, and 0.7% identified as transgender. Structural equation modeling supported hypothesized relationships between need to belong, social anxiety, social connectedness, alcohol expectancies, and alcohol use, a mean centered variable that included binge drinking, drinking frequency, and amount of consumption. Results: Positive alcohol expectancies related to tension reduction, sociability, and sexuality, were positively related to drinking, such that increased alcohol expectancies were associated with increased drinking. Alcohol expectancies mediated the relationship between need to belong and increased alcohol use, as well as social connectedness and increased alcohol use. Similarly, social anxiety also mediated these relationships. No direct relationships were found between need to belong or social connectedness and alcohol use, suggesting previous research exploring these relationships may have excluded control variables (e.g., biological sex, race/ethnicity) that better explain the impact of need to belong and social connectedness on alcohol use. Conclusion: Prevention and intervention efforts might be more effective in reducing alcohol use if social factors are more broadly targeted.

Late surfactant administration after 48 hours of age in preterm neonates with respiratory insufficiency: a systematic review and meta-analysis.

OBJECTIVE: To systematically review and meta-analyse the effect of late surfactant administration versus placebo in reducing the incidence of death or bronchopulmonary dysplasia (BPD) in preterm infants. DESIGN: PubMed, EMBASE, CINAHL and Cochrane CENTRAL were searched until 30 May 2023, for randomised controlled trials (RCTs) comparing administration of surfactant after 48 hours of age versus placebo in preterm ventilator-dependent neonates. The primary outcome was incidence of death or BPD at 36 weeks' postmenstrual age (PMA). Secondary outcomes included incidence of BPD at 36 weeks PMA, pre-discharge mortality, use of postnatal steroids, post-discharge respiratory support, treatment with steroids or hospitalisation prior to 1-year corrected age. RESULTS: Pooled analyses of four RCTs (N=850) showed no statistically significant difference between groups in the incidence of death or BPD at 36 weeks' PMA (relative risk (RR) 0.99; 95% CI 0.90 to 1.10; Grades of Recommendation, Assessment, Development and Evaluation (GRADE): moderate). Late surfactant administration significantly decreased the need for post-discharge respiratory support prior to 1-year corrected age (two RCTs; N=522; RR 0.72; 95% CI 0.59 to 0.89; GRADE: low). Other secondary outcomes did not differ significantly between the groups. CONCLUSIONS: Administration of late surfactant does not improve the rates of death or BPD at 36 weeks when administered to preterm infants with prolonged respiratory insufficiency. Additional adequately powered trials are needed to establish the efficacy of late surfactant therapy in preterm infants. PROSPERO REGISTRATION NUMBER: CRD42023432463.

Engineered Antiviral Sensor Targets Infected Mosquitoes.

Escalating vector disease burdens pose significant global health risks, as such innovative tools for targeting mosquitoes are critical. CRISPR-Cas technologies have played a crucial role in developing powerful tools for genome manipulation in various eukaryotic organisms. Although considerable efforts have focused on utilizing class II type II CRISPR-Cas9 systems for DNA targeting, these modalities are unable to target RNA molecules, limiting their utility against RNA viruses. Recently, the Cas13 family has emerged as an efficient tool for RNA targeting; however, the application of this technique in mosquitoes, particularly Aedes aegypti, has yet to be fully realized. In this study, we engineered an antiviral strategy termed REAPER (vRNA Expression Activates Poisonous Effector Ribonuclease) that leverages the programmable RNA-targeting capabilities of CRISPR-Cas13 and its potent collateral activity. REAPER remains concealed within the mosquito until an infectious blood meal is uptaken. Upon target viral RNA infection, REAPER activates, triggering programmed destruction of its target arbovirus such as chikungunya. Consequently, Cas13-mediated RNA targeting significantly reduces viral replication and viral prevalence of infection, and its promiscuous collateral activity can even kill infected mosquitoes within a few days. This innovative REAPER technology adds to an arsenal of effective molecular genetic tools to combat mosquito virus transmission.

Plasmids of the incompatibility group FIBK occur in Klebsiella variicola from diverse ecological niches / Los plásmidos del grupo de incompatibilidad FIBK se encuentran en Klebsiella variicola en diversos nichos ecológicos

Plasmids play a fundamental role in the evolution of bacteria by allowing them to adapt to different environments and acquire, through horizontal transfer, genes that confer resistance to different classes of antibiotics. Using the available in vitro and in silico plasmid typing systems, we analyzed a set of isolates and public genomes of K. variicola to study its plasmid diversity. The resistome, the plasmid multilocus sequence typing (pMLST), and molecular epidemiology using the MLST system were also studied. A high frequency of IncF plasmids from human isolates but lower frequency from plant isolates were found in our strain collection. In silico detection revealed 297 incompatibility (Inc) groups, but the IncFIBK (216/297) predominated in plasmids from human and environmental samples, followed by IncFIIK (89/297) and IncFIA/FIA(HI1) (75/297). These Inc groups were associated with clinically important ESBL (CTX-M-15), carbapenemases (KPC-2 and NDM-1), and colistin-resistant genes which were associated with major sequence types (ST): ST60, ST20, and ST10. In silico MOB typing showed 76% (311/404) of the genomes contained one or more of the six relaxase families with MOBF being most abundant. We identified untypeable plasmids carrying blaKPC-2, blaIMP-1, and blaSHV-187 but for which a relaxase was found; this may suggest that novel plasmid structures could be emerging in this bacterial species. The plasmid content in K. variicola has limited diversity, predominantly composed of IncFIBK plasmids dispersed in different STs. Plasmid detection using the replicon and MOB typing scheme provide a broader context of the plasmids in K. variicola. This study showed that whole-sequence-based typing provides current insights of the prevalence of plasmid types and their association with antimicrobial resistant genes in K. variicola obtained from humans and environmental niches.(AU)

Circumpolar assessment of mercury contamination: the Adélie penguin as a bioindicator of Antarctic marine ecosystems.

Due to its persistence and potential ecological and health impacts, mercury (Hg) is a global pollutant of major concern that may reach high concentrations even in remote polar oceans. In contrast to the Arctic Ocean, studies documenting Hg contamination in the Southern Ocean are spatially restricted and large-scale monitoring is needed. Here, we present the first circumpolar assessment of Hg contamination in Antarctic marine ecosystems. Specifically, the Adélie penguin (Pygoscelis adeliae) was used as a bioindicator species, to examine regional variation across 24 colonies distributed across the entire Antarctic continent. Mercury was measured on body feathers collected from both adults (n = 485) and chicks (n = 48) between 2005 and 2021. Because penguins' diet represents the dominant source of Hg, feather δ13C and δ15N values were measured as proxies of feeding habitat and trophic position. As expected, chicks had lower Hg concentrations (mean ± SD: 0.22 ± 0.08 µg·g‒1) than adults (0.49 ± 0.23 µg·g‒1), likely because of their shorter bioaccumulation period. In adults, spatial variation in feather Hg concentrations was driven by both trophic ecology and colony location. The highest Hg concentrations were observed in the Ross Sea, possibly because of a higher consumption of fish in the diet compared to other sites (krill-dominated diet). Such large-scale assessments are critical to assess the effectiveness of the Minamata Convention on Mercury. Owing to their circumpolar distribution and their ecological role in Antarctic marine ecosystems, Adélie penguins could be valuable bioindicators for tracking spatial and temporal trends of Hg across Antarctic waters in the future.

Chronic treatment with D2-antagonist haloperidol leads to inhibitory/excitatory imbalance in striatal D1-neurons.

Striatal dysfunction has been implicated in the pathophysiology of schizophrenia, a disorder characterized by positive symptoms such as hallucinations and delusions. Haloperidol is a typical antipsychotic medication used in the treatment of schizophrenia that is known to antagonize dopamine D2 receptors, which are abundantly expressed in the striatum. However, haloperidol's delayed therapeutic effect also suggests a mechanism of action that may go beyond the acute blocking of D2 receptors. Here, we performed proteomic analysis of striatum brain tissue and found more than 400 proteins significantly altered after 30 days of chronic haloperidol treatment in mice, namely proteins involved in glutamatergic and GABAergic synaptic transmission. Cell-type specific electrophysiological recordings further revealed that haloperidol not only reduces the excitability of striatal medium spiny neurons expressing dopamine D2 receptors (D2-MSNs) but also affects D1-MSNs by increasing the ratio of inhibitory/excitatory synaptic transmission (I/E ratio) specifically onto D1-MSNs but not D2-MSNs. Therefore, we propose the slow remodeling of D1-MSNs as a mechanism mediating the delayed therapeutic effect of haloperidol over striatum circuits. Understanding how haloperidol exactly contributes to treating schizophrenia symptoms may help to improve therapeutic outcomes and elucidate the molecular underpinnings of this disorder.

High inter-rater reliability between physicians and nurses utilising modified Downes' scores in preterm respiratory distress.

AIM: To assess the inter-rater reliability of modified Downes' scores assigned by physicians and nurses in the Ethiopian Neonatal Network and to calculate the concordance of score-based treatment for preterm infants with respiratory distress. METHODS: We included preterm infants admitted from June 2020 to July 2021 to four tertiary neonatal intensive care units (NICUs) of the Ethiopian Neonatal Network that presented with respiratory distress. We calculated the kappa statistic to determine the nurse and physician correlation for each component of the modified Downes' score and total score on admission and evaluated the concordance of scores above and below the treatment threshold of 4. RESULTS: Of the 1151 eligible infants admitted, 817 infants (71%) had scores reported concurrently and independently by nurse and physician. The kappa statistic for modified Downes' score components ranged from 0.88 to 0.92 and was 0.89 for the total score. There was 98% concordance for score-based treatment. CONCLUSION: Incorporation of the modified Downes' score on admission for preterm infants with respiratory distress was feasible in tertiary NICUs in Ethiopia. The kappa statistics showed near-perfect agreement between nurse and physician assessments, translating to a very high degree of concordance in score-based treatment recommendations. These results highlight an opportunity for task-shifting assessments and empowering nurses.

Comprehensive Case-Control Study of Protective and Risk Factors for Buruli Ulcer, Southeastern Australia.

To examine protective and risk factors for Buruli ulcer (BU), we conducted a case-control study of 245 adult BU cases and 481 postcode-matched controls across BU-endemic areas of Victoria, Australia. We calculated age- and sex-adjusted odds ratios for socio-environmental, host, and behavioral factors associated with BU by using conditional logistic regression. Odds of BU were >2-fold for persons with diabetes mellitus and persons working outdoors who had soil contact in BU-endemic areas (compared with indoor work) but were lower among persons who had bacillus Calmette-Guérin vaccinations. BU was associated with increasing numbers of possums and with ponds and bore water use at residences. Using insect repellent, covering arms and legs outdoors, and immediately washing wounds were protective; undertaking multiple protective behaviors was associated with the lowest odds of BU. Skin hygiene/protection behaviors and previous bacillus Calmette-Guérin vaccination might provide protection against BU in BU-endemic areas.

Extensive Colitis and Smoking Are Associated With Postoperative Complications Within 30 Days of Ileal Pouch-Anal Anastomosis.

BACKGROUND: Our understanding of outcomes after proctocolectomy with ileal pouch-anal anastomosis (IPAA) for ulcerative colitis (UC) is largely based on analyses of selected populations. We created a state-level registry to evaluate the epidemiology of IPAA surgery and pouch-related outcomes across the major healthcare systems performing these surgeries in our state. METHODS: We created a retrospective cohort of all patients undergoing restorative proctocolectomy with IPAA for UC at 1 of 4 centers between January 1, 2018, and December 31, 2020. The primary outcomes of this study were the rate of complications and all-cause readmissions within the first 30 days of the final stage of IPAA surgery. RESULTS: During the study period, 177 patients underwent IPAA surgery with 66 (37%) experiencing a complication within 30 days. After adjusting for the number of stages in IPAA surgery, patients with extensive UC (odds ratio, 3.61; 95% confidence interval, 1.39-9.33) and current or former smokers (odds ratio, 2.98; 95% confidence interval, 1.38-6.45) were more likely to experience a complication. Among all patients, 57 (32%) required readmission within 30 days. The most common reasons for readmission were ileus/small bowel obstruction (22%), peripouch abscess (19%), and dehydration (16%). CONCLUSION: In this first state-level examination of the epidemiology of IPAA for UC, we demonstrated that the complication rate after IPAA for UC was 37%, with one-third of patients being readmitted within 30 days. Extensive disease at the time of colectomy appears to be an indicator of more severe disease and may portend a worse prognosis after IPAA.

Use of a Mobile-Assisted Telehealth Regimen to Increase Exercise in Transplant Candidates: A Home-Based Prehabilitation Pilot and Feasibility Trial.

INTRODUCTION: Physical fitness assessed by the Liver Frailty Index (LFI) and 6-minute walk test (6MWT) informs the prognosis of liver transplant candidates, although there are limited data on its reversibility after prehabilitation. On a home-based exercise trial, we aimed to improve LFI and 6MWT and to investigate trial feasibility and intervention adherence. METHODS: Liver transplant candidates with cirrhosis wore a personal activity tracker and used Exercise and Liver FITness app for 14 weeks, including a 2-week technology acclimation run-in. The 12-week intervention consisted of Exercise and Liver FITness app plus personal activity tracker and 15-/30-minute weekly calls with a physical activity coach aiming to complete ≥2 video-training sessions/week, or ≥500 step/d baseline increase for ≥8 weeks. We defined feasibility as ≥66% of subjects engaging in the intervention phase and adherence as ≥50% subjects meeting training end point. RESULTS: Thirty-one patients (61 ± 7 years, 71% female, model for end-stage liver disease 17 ± 5, ∼33% frail) consented and 21 (68%) started the intervention. In the 15 subjects who completed the study, LFI improved from 3.84 ± 0.71 to 3.47 ± 0.90 ( P = 0.03) and 6MWT from 318 ± 73 to 358 ± 64 m ( P = 0.005). Attrition reasons included death (n = 4) and surgery (n = 2). There was 57% adherence, better for videos than for walking, although daily steps significantly increased (3,508 vs baseline: 1,260) during best performance week. One adverse event was attributed to the intervention. DISCUSSION: Our clinical trial meaningfully improved LFI by 0.4 and 6MWT by 41 m and met feasibility/adherence goals. In-training daily step increase supported physical self-efficacy and intervention uptake, but maintenance remained a challenge despite counseling.

Relationship Between Cannabis Use and Immediate, Delayed, and Working Memory Performance Among Older Adults.

Cannabis is increasingly accessible and use is increasing rapidly among older adults as laws change and cannabis becomes more frequently prescribed in healthcare settings. Past research identified cognitive effects of cannabis use among adolescents and young adults that can persist for several weeks after intoxication, though little is known about how these effects generalize to older adults. Participants (N = 1348) were drawn from the Health and Retirement Study (HRS) and were categorized as current occasional users (up to once/week in the past year, n = 36), current frequent users (once per week or more in the past year, n = 92), past users (n = 334), and non-users (n = 886). Participant ages ranged from 50 to 98 (M = 67.25, SD = 10.68). Uncontrolled, one-way ANOVAs and controlled ANCOVAs were used to examine between-group differences on immediate and delayed wordlist memory and working memory (serial sevens). When controlling for age, gender, education, and minority status, current frequent users demonstrated significantly worse immediate memory performance compared to past and non-users. However, this difference could have been the result of acute, residual effects of past-month cannabis use among current users. In controlled analyses, there were no differences between groups on delayed or working memory. Findings indicate that greater than weekly cannabis use may result in attentional and short-term memory deficits. Further, these effects may be mitigated by sustained abstinence. Limitations including sample size and measures of cannabis use warrant future studies to replicate and build upon these findings.

The Biosynthesis and Functions of Polyamines in the Interaction of Plant Growth-Promoting Rhizobacteria with Plants.

Plant growth-promoting rhizobacteria (PGPR) are members of the plant rhizomicrobiome that enhance plant growth and stress resistance by increasing nutrient availability to the plant, producing phytohormones or other secondary metabolites, stimulating plant defense responses against abiotic stresses and pathogens, or fixing nitrogen. The use of PGPR to increase crop yield with minimal environmental impact is a sustainable and readily applicable replacement for a portion of chemical fertilizer and pesticides required for the growth of high-yielding varieties. Increased plant health and productivity have long been gained by applying PGPR as commercial inoculants to crops, although with uneven results. The establishment of plant-PGPR relationships requires the exchange of chemical signals and nutrients between the partners, and polyamines (PAs) are an important class of compounds that act as physiological effectors and signal molecules in plant-microbe interactions. In this review, we focus on the role of PAs in interactions between PGPR and plants. We describe the basic ecology of PGPR and the production and function of PAs in them and the plants with which they interact. We examine the metabolism and the roles of PAs in PGPR and plants individually and during their interaction with one another. Lastly, we describe some directions for future research.