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The mammalian dive reflex, characterized by bradycardia and peripheral vasoconstriction, occurs in all mammals, including humans, in response to apnea. However, the dive reflex to a single, maximal, dry, dynamic apnea (DYN), and how it compares to a time-matched exercise control trial (EX) or dry static apnea (SA), has not been studied. We examined the hypotheses that, compared to EX and SA, the magnitude of the (a) cardiovascular response and (b) hematological response to DYN would be greater. Cardiovascular parameters (heart rate [HR], systolic [SBP], diastolic [DBP], and mean arterial [MAP] blood pressure) were continuously collected in twenty-three (F=6) moderate and elite freedivers, first during a maximal DYN, then during a time-matched SA and EX on a swimming ergometer in randomized order. Venous blood draws were made prior to and following each trial. The change in calculated oxygen saturation (DYN:-17±13%, EX:-2±1%, ΔSA:-2±1%;P<0.05, all comparisons) was greater during DYN compared to EX and SA. During DYN, ΔSBP (DYN:104±31mmHg, EX:38±23mmHg, SA:20±11mmHg), ΔDBP (DYN:45±12mmHg, EX:14±10mmHg, SA:15±8mmHg) and ΔMAP (DYN:65±17mmHg EX:22±13mmHg, SA:16±9mmHg) were increased compared to EX and SA, while ΔHR was greater during EX (DYN:-24±23bpm, EX:33±13bpm, SA:-1±10bpm) than either DYN or SA (P<0.0001, all comparisons). Females had greater pressor response to EX (ΔSBP:59±30mmHg, ΔDBP:24±14mmHg, ΔMAP:35±8mmHg) than males (ΔSBP:31±15mmHg, ΔDBP:11±6mmHg, ΔMAP:18±8mmHg; P<0.01, all comparisons). Together, these data indicate that DYN elicits a distinct, exaggerated cardiovascular response compared to EX or SA alone.
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ABSTRACT: The second victim phenomenon describes the distress frequently experienced by health care providers after an unintentional medical error or unexpected adverse event. However, few health care institutions have initiatives that proactively address this phenomenon. The pilot project discussed in this article aimed to create a peer support program for health care providers experiencing the second victim phenomenon. The project team validated the need for such a program among health care providers in the perioperative departments of two facilities within a large health care organization in the southeastern United States. To do this, they used a survey, the Second Victim Experience and Support Tool. Among survey respondents in the two departments, 80% and 87.6% indicated a strong desire to discuss their emotional challenges with a respected peer colleague after a traumatic event. The project team then developed and implemented a peer support program in three phases to 1) educate staff across the facility on second victimization, 2) recruit and train volunteer peer supporters, and 3) launch the pilot program by embedding these peer supporters in the two perioperative departments. A survey completed by participants in the pilot program showed that 80% of respondents found the peer support extremely beneficial, 20% found it very beneficial, and 100% would recommend peer support to a colleague. This successful pilot project could inform the establishment of peer support programs at other institutions to assist health care providers experiencing the second victim phenomenon.
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Grupo Associado , Apoio Social , Humanos , Projetos Piloto , Erros Médicos/prevenção & controle , Inquéritos e Questionários , Feminino , Masculino , Pessoal de Saúde/psicologia , Sudeste dos Estados Unidos , AdultoRESUMO
Background: The body shaping market has long been at the forefront of the aesthetic industry. With technological advances, patient demand for body sculpting in terms of reduction in subcutaneous tissue and enhancement of muscle has seen continual growth. Several devices have emerged in the space; however, few achieve both subcutaneous tissue reduction (SQR) and voluntary muscle increase (VMI) as measured by thickness, during the same treatment session. Objectives: This article presents the results of a pilot study on a unique approach to subcutaneous tissue reduction and increasing muscle thickness using a dual-modality, energy-based device. Methods: Twelve compliant patients (8 females and 4 males with an average age of 40 years) were enrolled in this single center, prospective study. All patients were treated with the dual-modality device (850â nm superluminescent diode matrix and electrical muscle stimulation), with external applicators being placed over the lower abdomen. The patients received 5 weekly treatments. Ultrasound measurements, photographs, weight, and waist measurements were taken at baseline, prior to the start of the fifth treatment, and at the 2-week and 2-month follow-up visits. Results: At the 2-month follow-up visit, the average SQR was 34.03% and the VMI measured 22.97% in all patients who completed the study. All patient and physician evaluations rated the results as satisfactory or better. There were no complications. Conclusions: Preliminary data show this dual-modality, electrical muscle stimulation/superluminescent diode matrix system provides both a safe and effective treatment for the reduction of subcutaneous tissue thickness and an increase in muscle definition and thickness. Objective and subjective evaluations demonstrated high levels of efficacy and satisfaction in all patients.
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Polyadenylation controls mRNA biogenesis, nucleo-cytoplasmic export, translation and decay. These processes are interdependent and coordinately regulated by poly(A)-binding proteins (PABPs), yet how PABPs are themselves regulated is not fully understood. Here, we report the discovery that human nuclear PABPN1 is phosphorylated by mitotic kinases at four specific sites during mitosis, a time when nucleoplasm and cytoplasm mix. To understand the functional consequences of phosphorylation, we generated a panel of stable cell lines inducibly over-expressing PABPN1 with point mutations at these sites. Phospho-inhibitory mutations decreased cell proliferation, highlighting the importance of PABPN1 phosphorylation in cycling cells. Dynamic regulation of poly(A) tail length and RNA stability have emerged as important modes of gene regulation. We therefore employed long-read sequencing to determine how PABPN1 phospho-site mutants affected poly(A) tails lengths and TimeLapse-seq to monitor mRNA synthesis and decay. Widespread poly(A) tail lengthening was observed for phospho-inhibitory PABPN1 mutants. In contrast, expression of phospho-mimetic PABPN1 resulted in shorter poly(A) tails with increased non-A nucleotides, in addition to increased transcription and reduced stability of a distinct cohort of mRNAs. Taken together, PABPN1 phosphorylation remodels poly(A) tails and increases mRNA turnover, supporting the model that enhanced transcriptome dynamics reset gene expression programs across the cell cycle.
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Mitose , Poli A , Proteína I de Ligação a Poli(A) , Poliadenilação , Estabilidade de RNA , RNA Mensageiro , Transcriptoma , Humanos , Mitose/genética , Proteína I de Ligação a Poli(A)/metabolismo , Proteína I de Ligação a Poli(A)/genética , RNA Mensageiro/metabolismo , RNA Mensageiro/genética , Fosforilação , Poli A/metabolismo , Estabilidade de RNA/genética , Núcleo Celular/metabolismo , Núcleo Celular/genética , Células HeLaRESUMO
Despite elite human free divers achieving incredible feats in competitive free diving, there has yet to be a study that compares consummate divers, (i.e. northern elephant seals) to highly conditioned free divers (i.e., elite competitive free-diving humans). Herein, we compare these two diving models and suggest that hematological traits detected in seals reflect species-specific specializations, while hematological traits shared between the two species are fundamental mammalian characteristics. Arterial blood samples were analyzed in elite human free divers (n = 14) during a single, maximal volitional apnea and in juvenile northern elephant seals (n = 3) during rest-associated apnea. Humans and elephant seals had comparable apnea durations (â¼6.5 min) and end-apneic arterial Po2 [humans: 40.4 ± 3.0 mmHg (means ± SE); seals: 27.1 ± 5.9 mmHg; P = 0.2]. Despite similar increases in arterial Pco2 (humans: 33 ± 5%; seals: 16.3 ± 5%; P = 0.2), only humans experienced reductions in pH from baseline (humans: 7.45 ± 0.01; seals: 7.39 ± 0.02) to end apnea (humans: 7.37 ± 0.01; seals: 7.38 ± 0.02; P < 0.0001). Hemoglobin P50 was greater in humans compared to elephant seals (29.9 ± 1.5 and 28.7 ± 0.6 mmHg, respectively; P = 0.046). Elephant seals overall had higher carboxyhemoglobin (COHb) levels (5.9 ± 2.6%) compared to humans (0.8 ± 1.2%; P < 0.0001); however, following apnea, COHb was reduced in seals (baseline: 6.1 ± 0.3%; end apnea: 5.6 ± 0.3%) and was slightly elevated in humans (baseline: 0.7 ± 0.1%; end apnea: 0.9 ± 0.1%; P < 0.0002, both comparisons). Our data indicate that during static apnea, seals have reduced hemoglobin P50, greater pH buffering, and increased COHb levels. The differences in hemoglobin P50 are likely due to the differences in the physiological environment between the two species during apnea, whereas enhanced pH buffering and higher COHb may represent traits selected for in elephant seals.NEW & NOTEWORTHY This study uses similar methods and protocols in elite human free divers and northern elephant seals. Using highly conditioned divers (elite free-diving humans) and highly adapted divers (northern elephant seals), we explored which hematological traits are fundamentally mammalian and which may have been selected for. We found differences in P50, which may be due to different physiological environments between species, while elevated pH buffering and carbon monoxide levels might have been selected for in seals.
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Apneia , Mergulho , Focas Verdadeiras , Animais , Focas Verdadeiras/sangue , Humanos , Mergulho/fisiologia , Apneia/sangue , Apneia/fisiopatologia , Masculino , Adulto , Feminino , Especificidade da Espécie , Hemoglobinas/metabolismo , Adulto Jovem , Dióxido de Carbono/sangue , Oxigênio/sangueRESUMO
BACKGROUND: One of the proposed applications of gene drives has been to revert pesticide resistant mutations back to the ancestral susceptible state. Insecticides that have become ineffective because of the rise of resistance could have reinvigorated utility and be used to suppress pest populations again, perhaps at lower application doses. RESULTS: We have created a laboratory model for susceptibility gene drives that replaces field-selected resistant variants of the acetylcholine esterase (Ace) locus of Drosophila melanogaster with ancestral susceptible variants. We constructed a CRISPR/Cas9 homing drive and found that homing occurred in many genetic backgrounds with varying efficiencies. While the drive itself could not be homozygous, it converted resistant alleles into susceptible ones and produced recessive lethal alleles that could suppress populations. Our studies provided evidence for two distinct classes of gene drive resistance (GDR): rather than being mediated by the conventional non-homologous end-joining (NHEJ) pathway, one seemed to involve short homologous repair and the other was defined by genetic background. Additionally, we used simulations to explore a distinct application of susceptibility drives; the use of chemicals to prevent the spread of synthetic gene drives into protected areas. CONCLUSIONS: Insecticide susceptibility gene drives could be useful tools to control pest insects however problems with particularities of target loci and GDR will need to be overcome for them to be effective. Furthermore, realistic patterns of pest dispersal and high insecticide exposure rates would be required if susceptibility were to be useful as a 'safety-switch' to prevent the unwanted spread of gene drives. © 2024 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Acetilcolinesterase , Drosophila melanogaster , Tecnologia de Impulso Genético , Resistência a Inseticidas , Animais , Acetilcolinesterase/genética , Acetilcolinesterase/metabolismo , Sistemas CRISPR-Cas , Drosophila melanogaster/genética , Drosophila melanogaster/efeitos dos fármacos , Proteínas de Drosophila/genética , Resistência a Inseticidas/genética , Inseticidas/farmacologiaRESUMO
OBJECTIVE: The objective of this study is to investigate changes in willingness for total knee replacement (TKR) surgery following a randomised control trial (RCT) of an osteoarthritis management program, and to extrapolate orthopaedic cost consequences for private health insurers (PHI). METHODS: Willingness for surgery data from the RCT is analysed using a multinomial logistic regression model. A decision analytic model is used to conduct a break-even cost benefit analysis of the intervention from a PHI payer perspective. The analysis estimates the minimum probability of progression to surgery required for the intervention to be cost-neutral when considering savings limited to reduced orthopaedic costs. Cost data and orthopaedic pathway probabilities are sourced from payer data. RESULTS: At baseline, 39% of participants in the treatment and control group were willing for surgery. At 12 months, 16% of participants in the treatment group remained willing for surgery, versus 36% in the control group. Participants in the treatment group are 2.96 (95% CI: 1.01-8.66) times more likely than those in the control group to move from initially willing for surgery, to unsure or unwilling at 12 months. The analysis indicates that the intervention is likely to be cost saving when at least 60% of initially willing participants progress to surgery over a 5-year time horizon. CONCLUSION: Our study estimates that an education, exercise and weight loss intervention can deliver both improved participant outcomes and a return on investment to Australian PHIs through a reduction in TKR surgery incidence.
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Artroplastia do Joelho , Autogestão , Humanos , Redução de Custos , Austrália , Terapia por Exercício , Análise Custo-BenefícioRESUMO
Most animals rely on visual information for a variety of everyday tasks. The information available to a visual system depends in part on its spatial resolving power and contrast sensitivity. Because of their competing demands for physical space within an eye, these traits cannot simultaneously be improved without increasing overall eye size. The contrast sensitivity function is an integrated measure of visual performance that measures both resolution and contrast sensitivity. Its measurement helps us identify how different species have made a trade-off between contrast sensitivity and spatial resolution. It further allows us to identify the evolutionary drivers of sensory processing and visually mediated behaviour. Here, we measured the contrast sensitivity function of the fiddler crab Gelasimus dampieri using its optokinetic responses to wide-field moving sinusoidal intensity gratings of different orientations, spatial frequencies, contrasts and speeds. We further tested whether the behavioural state of the crabs (i.e. whether crabs are actively walking or not) affects their optokinetic gain and contrast sensitivity. Our results from a group of five crabs suggest a minimum perceived contrast of 6% and a horizontal and vertical visual acuity of 0.4 cyc deg-1 and 0.28 cyc deg-1, respectively, in the crabs' region of maximum optomotor sensitivity. Optokinetic gain increased in moving crabs compared with restrained crabs, adding another example of the importance of naturalistic approaches when studying the performance of animals.
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Braquiúros , Sensibilidades de Contraste , Animais , Braquiúros/fisiologia , Acuidade VisualRESUMO
Children from households with a preferred language other than English are less likely to receive timely identification and treatment for developmental delay than children of native English speakers. In dismantling this inequity, the role of primary care pediatrics is to establish equitable systems for screening and referral. This project, conducted in a network of twelve pediatric primary care centers, focused on eliminating a small but systematic disparity in developmental screening rates between families who did and did not require interpreters (86% versus 92%). The specific aim was to increase developmental screen completion among patients needing interpreters from 86% to 92% of age-appropriate well-child visits. Methods: Data were extracted from the electronic health record (EHR) to measure the proportion of 9-, 18-, 24-, and 30-month well-child visits at which developmental screens were completed, stratified by interpreter need (nâ =â 31,461 visits; 7500 needing interpreters). One primary care center tested small changes to standardize processes, eliminate workarounds, and leverage EHR features using the Institute for Healthcare Improvement's Model for Improvement. The QI team plotted screen completion on control charts and spread successful changes to all 12 clinics. Statistical process control evaluated the significance of changes in screening rates. Results: For patients needing interpreters, screen completion rose across all clinics from 86% to 93% when the clinics implemented the new process. Screen completion for patients not needing interpreters remained at 92%. Conclusion: A standardized process supported by the EHR improved developmental screening among patients needing interpreters, eliminating disparities.
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Enrollment in high-quality early childhood education (ECE) improves educational and health outcomes and can mitigate racial and economic disparities. Pediatricians are encouraged to promote ECE yet lack the time and knowledge to assist families effectively. In 2016, our academic primary care center hired an ECE Navigator to promote ECE and help families enroll. Our SMART aims were to increase the number of children with facilitated referrals to high-quality ECE programs from 0 to 15 per month and to confirm enrollment on a subset to achieve an enrollment rate of 50% by December 31, 2020. Methods: We used the Institute for Healthcare Improvement's Model for Improvement. Interventions included system changes in partnership with ECE agencies (eg, interactive map of subsidized preschool options, streamlined enrollment forms), case management with families, and population-based approaches to understand families' needs and the program's overall impact. We plotted the number of monthly facilitated referrals and the percentage of referrals enrolled on run and control charts. We used standard probability-based rules to identify special causes. Results: Facilitated referrals increased from 0 to 29 per month and remained above 15. The percentage of enrolled referrals increased from 30% to 74% in 2018, then decreased to 27% in 2020 when childcare availability declined during the pandemic. Conclusions: Our innovative ECE partnership improved access to high-quality ECE. Interventions could be adopted in part or whole by other clinical practices or WIC offices to equitably improve early childhood experiences for low-income families and racial minorities.
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Tetracenomycins and elloramycins are polyketide natural products produced by several actinomycetes that exhibit antibacterial and anticancer activities. They inhibit ribosomal translation by binding in the polypeptide exit channel of the large ribosomal subunit. The tetracenomycins and elloramycins are typified by a shared oxidatively modified linear decaketide core, yet they are distinguished by the extent of O-methylation and the presence of a 2',3',4'-tri-O-methyl-α-l-rhamnose appended at the 8-position of elloramycin. The transfer of the TDP-l-rhamnose donor to the 8-demethyl-tetracenomycin C aglycone acceptor is catalyzed by the promiscuous glycosyltransferase ElmGT. ElmGT exhibits remarkable flexibility toward transfer of many TDP-deoxysugar substrates to 8-demethyltetracenomycin C, including TDP-2,6-dideoxysugars, TDP-2,3,6-trideoxysugars, and methyl-branched deoxysugars in both d- and l-configurations. Previously, we developed an improved host, Streptomyces coelicolor M1146::cos16F4iE, which is a stable integrant harboring the required genes for 8-demethyltetracenomycin C biosynthesis and expression of ElmGT. In this work, we developed BioBricks gene cassettes for the metabolic engineering of deoxysugar biosynthesis in Streptomyces spp. As a proof of concept, we used the BioBricks expression platform to engineer biosynthesis for d-configured TDP-deoxysugars, including known compounds 8-O-d-glucosyl-tetracenomycin C, 8-O-d-olivosyl-tetracenomycin C, 8-O-d-mycarosyl-tetracenomycin C, and 8-O-d-digitoxosyl-tetracenomycin C. In addition, we generated four new tetracenomycins including one modified with a ketosugar, 8-O-4'-keto-d-digitoxosyl-tetracenomycin C, and three modified with 6-deoxysugars, including 8-O-d-fucosyl-tetracenomycin C, 8-O-d-allosyl-tetracenomycin C, and 8-O-d-quinovosyl-tetracenomycin C. Our work demonstrates the feasibility of BioBricks cloning, with the ability to recycle intermediate constructs, for the rapid assembly of diverse carbohydrate pathways and glycodiversification of a variety of natural products.
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INTRODUCTION: Studies reveal that cannabidiol may acutely reduce blood pressure and arterial stiffness in normotensive humans; however, it remains unknown if this holds true in patients with untreated hypertension. We aimed to extend these findings to examine the influence of the administration of cannabidiol on 24-h ambulatory blood pressure and arterial stiffness in hypertensive individuals. METHODS: Sixteen volunteers (eight females) with untreated hypertension (elevated blood pressure, stage 1, stage 2) were given oral cannabidiol (150 mg every 8 h) or placebo for 24 h in a randomised, placebo-controlled, double-blind, cross-over study. Measures of 24-h ambulatory blood pressure and electrocardiogram (ECG) monitoring and estimates of arterial stiffness and heart rate variability were obtained. Physical activity and sleep were also recorded. RESULTS: Although physical activity, sleep patterns and heart rate variability were comparable between groups, arterial stiffness (~ 0.7 m/s), systolic blood pressure (~ 5 mmHg), and mean arterial pressure (~ 3 mmHg) were all significantly (P < 0.05) lower over 24 h on cannabidiol when compared to the placebo. These reductions were generally larger during sleep. Oral cannabidiol was safe and well tolerated with no development of new sustained arrhythmias. CONCLUSIONS: Our findings indicate that acute dosing of cannabidiol over 24 h can lower blood pressure and arterial stiffness in individuals with untreated hypertension. The clinical implications and safety of longer-term cannabidiol usage in treated and untreated hypertension remains to be established.
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Canabidiol , Hipertensão , Rigidez Vascular , Feminino , Humanos , Pressão Sanguínea , Canabidiol/uso terapêutico , Projetos Piloto , Monitorização Ambulatorial da Pressão Arterial , Estudos Cross-Over , Hipertensão/tratamento farmacológico , Método Duplo-CegoRESUMO
There is increasing interest in the use of endosymbionts in pest control, which will benefit from the identification of endosymbionts from potential donor species for transfer to pest species. Here, we screened for endosymbionts in 123 Australian aphid samples across 32 species using 16S DNA metabarcoding. We then developed a qPCR method to validate the metabarcoding data set and to monitor endosymbiont persistence in aphid cultures. Pea aphids (Acyrthosiphon pisum) were frequently coinfected with Rickettsiella and Serratia, and glasshouse potato aphids (Aulacorthum solani) were coinfected with Regiella and Spiroplasma; other secondary endosymbionts detected in samples occurred by themselves. Hamiltonella, Rickettsia and Wolbachia were restricted to a single aphid species, whereas Regiella was found in multiple species. Rickettsiella, Hamiltonella and Serratia were stably maintained in laboratory cultures, although others were lost rapidly. The overall incidence of secondary endosymbionts in Australian samples tended to be lower than recorded from aphids overseas. These results indicate that aphid endosymbionts probably exhibit different levels of infectivity and vertical transmission efficiency across hosts, which may contribute to natural infection patterns. The rapid loss of some endosymbionts in cultures raises questions about factors that maintain them under field conditions, while endosymbionts that persisted in laboratory culture provide candidates for interspecific transfers.
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Afídeos , Animais , Afídeos/genética , Afídeos/microbiologia , Simbiose , Austrália , Enterobacteriaceae , Serratia/genéticaRESUMO
OBJECTIVE: To explore the mediators of effects of two 6-month telehealth-delivered exercise programs, including exercise with and without weight-loss diet, on pain and function improvements in knee osteoarthritis (OA). METHODS: Secondary analysis of 345 participants from a 3-arm randomized controlled trial of exercise (Exercise program) and exercise plus diet (Diet + Exercise program) versus information (Control program) was conducted. Outcomes were changes in pain (11-point numeric rating scale) and function (Western Ontario and McMaster Universities Osteoarthritis Index [score range 0-68]) at 12 months. Potential mediators were change at 6 months in attitudes toward self-management, fear of movement, arthritis self-efficacy, weight, physical activity, and willingness for knee surgery. For the Diet + Exercise program versus the Exercise program, only change in weight was evaluated. RESULTS: Possible mediators of the Exercise program versus the Control program included reduced fear of movement (accounting for -1.11 units [95% confidence interval (95% CI) -2.15, -0.07] improvement in function) and increased arthritis self-efficacy (-0.40 units [95% CI -0.75, -0.06] reduction in pain, -1.66 units [95% CI -3.04, -0.28] improvement in function). The Diet + Exercise program versus the Control program mediators included reduced fear of movement (-1.13 units [95% CI -2.17, -0.08] improvement in function), increased arthritis self-efficacy (-0.77 units [95% CI -1.26, -0.28] reduction in pain, -5.15 units [95% CI -7.34, -2.96] improvement in function), and weight loss (-1.20 units [95% CI -1.73, -0.68] reduction in pain, -5.79 units [95% CI -7.96, -3.63] improvement in function). Weight loss mediated the Diet + Exercise program versus the Exercise program (-0.89 units [95% CI -1.31, -0.47] reduction in pain, -4.02 units [95% CI -5.77, -2.26] improvement in function). CONCLUSION: Increased arthritis self-efficacy, reduced fear of movement, and weight loss may partially mediate telehealth-delivered exercise program effects, with and without diet, on pain and/or function in knee OA. Weight loss may partially mediate the effect of diet and exercise compared to exercise alone.
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Osteoartrite do Joelho , Humanos , Osteoartrite do Joelho/diagnóstico , Osteoartrite do Joelho/terapia , Osteoartrite do Joelho/complicações , Terapia por Exercício , Resultado do Tratamento , Dor/complicações , Exercício Físico , Dieta Redutora , Redução de PesoRESUMO
OBJECTIVE: To explore experiences maintaining weight loss 6 months after completing a multicomponent weight loss programme for knee osteoarthritis. DESIGN: Qualitative study based on an interpretivist paradigm and a phenomenological approach that was embedded within a randomised controlled trial. SETTING: Semistructured interviews were conducted with participants 6 months after completing a 6-month weight loss programme (ACTRN12618000930280) involving a ketogenic very low calorie diet (VLCD), exercise and physical activity programme, videoconferencing consultations with a dietitian and physiotherapist, and provision of educational and behaviour change resources and meal replacement products. Interviews were audio recorded, transcribed verbatim and data were analysed based on the principles of reflexive thematic analysis. PARTICIPANTS: 20 people with knee osteoarthritis. RESULTS: Three themes were developed: (1) successfully maintained weight loss; (2) empowering self-management of weight (understand importance of exercise; increased knowledge about food and nutrition; resources from programme still useful; knee pain as a motivator; confidence in ability to self-regulate weight) and (3) challenges keeping on track (loss of accountability to dietitian and study; old habits and social situations; stressful life events or changes in health). CONCLUSION: Participants had overall positive experiences maintaining their weight loss since completing the weight loss programme and were confident in their ability to self-regulate their weight in the future. Findings suggest a programme incorporating dietitian and physiotherapist consultations, a VLCD, and educational and behaviour change resources supports confidence maintaining weight loss in the medium term. Further research is required to explore strategies to overcome barriers like loss of accountability and returning to old eating habits.
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Osteoartrite do Joelho , Programas de Redução de Peso , Humanos , Osteoartrite do Joelho/terapia , Exercício Físico , Articulação do Joelho , Pesquisa Qualitativa , Redução de PesoRESUMO
BACKGROUND: Pediatric obesity is prevalent and challenging to treat. Although family-centered behavioral management is the gold standard, many families face structural inequities to its access and efficacy. Identifying ways to manage pediatric obesity within primary care is needed. METHODS: This feasibility study included three sequential trials of peer-led group sessions occurring biweekly or monthly between 3/2016 and 2/2017. Parent-child dyads were recruited from a large academic primary care clinic via mailed invitations, prioritizing patients living in local zip codes of historical disinvestment. Eligible patients were 6 to 12 years with a body mass index ≥85th percentile, with parent and child interest in making healthy lifestyle changes, and English speaking. RESULTS: 27 dyads participated, 77% were non-Hispanic Black. Retention and attendance rates were highest in the initial four-session biweekly pilot (100%, 0 dropouts), high in the full six-session biweekly cohort (83%, 1 dropout), and moderate in the monthly cohort (62.7%, 4 dropouts). Families reported high satisfaction with the sessions (4.75/5). Qualitative comments suggested social connections had motivated behavior change in some families. CONCLUSION: Parent-led group sessions for pediatric weight management show promise in engaging families. A future large trial is needed to assess behavior change and anthropometric outcomes.
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Obesidade Infantil , Humanos , Criança , Obesidade Infantil/prevenção & controle , Estudos de Viabilidade , Monitores de Aptidão Física , Índice de Massa Corporal , Estilo de Vida SaudávelRESUMO
Endosymbiotic bacteria that live inside the cells of insects are typically only transmitted maternally and can spread by increasing host fitness and/or modifying reproduction in sexual hosts. Transinfections of Wolbachia endosymbionts are now being used to introduce useful phenotypes into sexual host populations, but there has been limited progress on applications using other endosymbionts and in asexual populations. Here, we develop a unique pathway to application in aphids by transferring the endosymbiont Rickettsiella viridis to the major crop pest Myzus persicae. Rickettsiella infection greatly reduced aphid fecundity, decreased heat tolerance, and modified aphid body color, from light to dark green. Despite inducing host fitness costs, Rickettsiella spread rapidly through caged aphid populations via plant-mediated horizontal transmission. The phenotypic effects of Rickettsiella were sensitive to temperature, with spread only occurring at 19 °C and not 25 °C. Body color modification was also lost at high temperatures despite Rickettsiella maintaining a high density. Rickettsiella shows the potential to spread through natural M. persicae populations by horizontal transmission and subsequent vertical transmission. Establishment of Rickettsiella in natural populations could reduce crop damage by modifying population age structure, reducing population growth and providing context-dependent effects on host fitness. Our results highlight the importance of plant-mediated horizontal transmission and interactions with temperature as drivers of endosymbiont spread in asexual insect populations.
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Afídeos , Coxiellaceae , Animais , Afídeos/microbiologia , Coxiellaceae/genética , Bactérias , Fenótipo , Reprodução , SimbioseRESUMO
In the United States, the opioid epidemic and COVID-19-related substance use have exacerbated the overall incidence of substance use disorders (SUDs). Medication-assisted therapy (MAT), or cognitive and behavioral therapy that combines medications that reduce substance use or acute withdrawal symptoms, has dramatically improved outcomes for SUD patients, including preventing mortality. With recent US Congressional funding for MAT, patients presenting for acute care on MAT-related medications will continue to increase. Nurses should be aware of these medications' mechanism of action, typical side effects, and implications on treating acute pain to optimize their care.
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COVID-19 , Transtornos Relacionados ao Uso de Opioides , Transtornos Relacionados ao Uso de Substâncias , Humanos , Estados Unidos , Terapia Comportamental , Transtornos Relacionados ao Uso de Opioides/tratamento farmacológicoRESUMO
In early 2020, it was hypothesized that COVID-19 would lead to disproportionately negative health and work outcomes for Black and Hispanic adults, but sufficient data had yet been collected to fully support this claim. Now, we have empirical evidence, but little has been done to aggregate this information to fully understand its impact on these communities. Utilizing 44 articles from a scoping review of three databases (PubMed, Web of Science, and Business Source Complete), this study seeks to identify the primary work-related risks that help explain Black and Hispanic adults' disparate COVID-19-related work outcomes (e.g., loss of hours, job disruption, stress). Findings illuminate four primary risks faced by Black and Hispanic workers: (1) being an essential worker, (2) type of work performed, (3) workplace factors; and (4) community and geographic factors. We conclude with policy recommendations that will help inform policy and practice for economic recovery from the pandemic for other marginalized populations.
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This study explored the relationship between existing community resources and community leaders' perceptions of resilience and rural health during COVID-19. Observational data of material capitals (e.g., grocery stores and physical activity resources) present in five rural communities involved in a health promotion project were collected and compared with key informant interviews of perceived community health and resilience during the COVID-19 pandemic. The analysis compares the differences in community leaders' perceptions of resilience during the pandemic to the actual material capitals of the community. While these rural counties were average in terms of available physical activity and nutritional resources, the onset of the pandemic led to varying degrees of disruption in access due to structural closures of mainstay resources, as well as residents perceiving that they cannot or should not access available resources. In addition, county coalition progress was stalled as individuals and groups could not gather together to complete projects, such as building playground equipment. This study demonstrates that existing quantitative instruments, such as NEMS and PARA, fail to take into account perceived access and utility of resources. Therefore, practitioners should consider multiple ways to evaluate resources, capacity, and progress on a health intervention or program and consider community voice to ensure feasibility, relevance, and sustainability-especially when faced with a public health emergency like COVID-19.