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1.
J Oral Maxillofac Surg ; 82(6): 706-718, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38552673

RESUMO

Segmental odontomaxillary dysplasia (SOD) is a rare and unusual nonhereditary developmental disorder that affects one side of the maxilla, impacting the hard tissue, soft tissue, and dentition in the affected area. It most frequently presents with enlargement of the gingival and osseous tissue of the affected side and hypodontia of the involved quadrant. Cutaneous irregularities of the impacted area are also common. We report a case of SOD arising in the right maxilla of a three-year-old female. Our report and review of the literature highlight the clinical, radiographic, and histopathologic characteristics of SOD, as well as the management of patients and the proposed etiologies of its pathogenesis.


Assuntos
Odontodisplasia , Humanos , Feminino , Pré-Escolar , Odontodisplasia/patologia , Odontodisplasia/diagnóstico por imagem , Odontodisplasia/diagnóstico , Maxila/anormalidades
2.
J Clin Nurs ; 33(7): 2544-2561, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38454551

RESUMO

AIM(S): To explore the published research related to nurses' documentation and use of vital signs in recognising and responding to deteriorating patients. DESIGN: Scoping review of international, peer-reviewed research studies. DATA SOURCES: Cumulative Index to Nursing and Allied Health Literature Complete, Medline Complete, American Psychological Association PsycInfo and Excerpta Medica were searched on 25 July 2023. REPORTING METHOD: Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. RESULTS: Of 3880 potentially eligible publications, 32 were included. There were 26 studies of nurses' vital sign documentation: 21 adults and five paediatric. The most and least frequently documented vital signs were blood pressure and respiratory rate respectively. Seven studies focused on vital signs and rapid response activation or afferent limb failure. Five studies of vital signs used to trigger the rapid response system showed heart rate was the most frequent and respiratory rate and conscious state were the least frequent. Heart rate was least likely and oxygen saturation was most likely to be associated with afferent limb failure (n = 4 studies). CONCLUSION: Despite high reliance on using vital signs to recognise clinical deterioration and activate a response to deteriorating patients in hospital settings, nurses' documentation of vital signs and use of vital signs to activate rapid response systems is poorly understood. There were 21studies of nurses' vital sign documentation in adult patients and five studies related to children. IMPLICATIONS FOR THE PROFESSION AND/OR PATIENT CARE: A deeper understanding of nurses' decisions to assess (or not assess) specific vital signs, analysis of the value or importance nurses place (or not) on specific vital sign parameters is warranted. The influence of patient characteristics (such as age) or the clinical practice setting, and the impact of nurses' workflows of vital sign assessment warrants further investigation. PATIENT OR PUBLIC CONTRIBUTION: No Patient or Public Contribution.


Assuntos
Deterioração Clínica , Sinais Vitais , Humanos , Sinais Vitais/fisiologia , Adulto , Recursos Humanos de Enfermagem Hospitalar/psicologia , Documentação/métodos , Documentação/normas
3.
J Aging Soc Policy ; : 1-17, 2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38564337

RESUMO

Older adults are more frequently wanting to age in place. Governments are seeking cost-effective and efficient methods of supporting aging populations. Older adults who want to stay in their homes for as long as possible encounter multiple barriers, including struggling to maintain their homes, inadequate levels of social and healthcare support, and the lack of financial capacity to pay for home support services. The Mobile Seniors' Wellness Network (MSWN), a multi-disciplinary and person-centered mobile health and social support intervention study was designed to investigate and support aging in place for older adults living in rural New Brunswick, Canada. Secondary analysis of case notes and exit interviews using content analysis revealed concerns with the lack of affordable and mobile care services for vulnerable rural older adults. Older adults revealed that their needs include "the little things" rather than grand gestures or sweeping policies to age in place such as assistance with grounds and home maintenance, in addition to relational and person-centered health and social care in the home. Reliance on private service delivery and volunteer organizations can increase the likelihood that older adults will experience a breakdown of social support networks tied together loosely by friends, family, and their communities. When services are unattainable aging in place becomes an unreachable goal.

4.
Phys Rev Lett ; 130(8): 083802, 2023 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-36898095

RESUMO

Photonic crystal cavities with bowtie defects that combine ultrahigh Q and ultralow mode volume are theoretically studied for low-power nanoscale optical trapping. By harnessing the localized heating of the water layer near the bowtie region, combined with an applied alternating current electric field, this system provides long-range electrohydrodynamic transport of particles with average radial velocities of 30 µm/s towards the bowtie region on demand by switching the input wavelength. Once transported to a given bowtie region, synergistic interaction of optical gradient and attractive negative thermophoretic forces stably trap a 10 nm quantum dot in a potential well with a depth of 10 k_{B}T using a mW input power.

5.
J Exp Biol ; 226(14)2023 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-37387253

RESUMO

Despite the potential for temporally dependent relationships between trait values and fitness (e.g. as juveniles approach life-stage transitions such as fledging), how developmental stage affects canalization (a measure of robustness to environmental variation) of morphological and physiological traits is rarely considered. To test the sensitivity of morphological and physiological traits to environmental variation in two developmental stages, we manipulated brood size at hatch in European starlings (Sturnus vulgaris) and cross-fostered chicks between enlarged and reduced broods approaching fledging. We measured body size (mass, tarsus, wing length) and physiological state (aerobic capacity, oxidative status) at asymptotic mass on day 15, then cross-fostered chicks between 'high' and 'low' quality environments and assessed the same traits again on day 20, after 5 days of pre-fledging mass recession. Chicks in reduced broods were heavier at asymptotic mass and had lower reactive oxygen metabolites than enlarged broods, whereas structural size, aerobic capacity and antioxidant capacity were unaffected by experimental brood size. The observed canalization of structural and physiological traits during early development was maintained after cross-fostering, during late development. However, in contrast to early development, antioxidant capacity approaching fledging appeared sensitive to environmental conditions, as trajectories varied by cross-fostering treatment. Elevated reactive oxygen metabolites observed after early development in enlarged brood chicks were maintained after cross-fostering, suggesting that canalized development in low-quality environments could produce oxidative costs that carry over between life stages, even when conditions improve. These data reveal trait-specific relationships between environmental conditions and development, and highlight how natal environment effects may vary by developmental stage.


Assuntos
Antioxidantes , Estorninhos , Animais , Estorninhos/fisiologia , Tamanho Corporal , Oxirredução , Estresse Oxidativo
6.
BMC Health Serv Res ; 23(1): 7, 2023 Jan 04.
Artigo em Inglês | MEDLINE | ID: mdl-36597088

RESUMO

BACKGROUND: India, the seventh-largest country in the world and the second-most populated faces enormous challenges when it comes to healthcare. The country's healthcare system was close to collapse due to the detrimental effects of the COVID-19 pandemic. Telehealth, which enables treating patients remotely, played a critical role during these challenging times. This systematic review investigates in detail the role of telehealth during COVID-19 and its application beyond the pandemic. METHODS: Database searches on PubMed, Scopus, Science Direct and Web of Science were carried out for studies published on telehealth, and articles were included if they focused on any audio or video telehealth consultation during the pandemic in India. Findings were synthesised into three main themes: applications, benefits and challenges of telehealth services. Methodological quality was assessed using JBI critical appraisal tools. RESULTS: The initial search on databases yielded 1143 articles. Of those, 19 met the eligibility criteria. Findings highlight the effective utilisation of telehealth across multiple medical specialities. Although insufficient technological infrastructure and other barriers due to the virtual consultation challenge the successful implementation of telehealth in India, it has the potential to bridge the rural-urban healthcare divide with cost-effective and easily accessible services. CONCLUSION: High patient/provider satisfaction underscores the need to integrate telehealth into routine healthcare practices in the country. However, the review urges the government and healthcare practitioners to address the telehealth challenges with prime importance to ensure quality healthcare throughout the nation even after the pandemic.


Assuntos
COVID-19 , Telemedicina , Humanos , COVID-19/epidemiologia , Pandemias , Qualidade da Assistência à Saúde , Instalações de Saúde
7.
Crit Care Med ; 50(11): 1588-1598, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-35866655

RESUMO

OBJECTIVES: To develop and validate a prediction model to estimate the risk of Medical Emergency Team (MET) review, within 48 hours of an emergency admission, using information routinely available at the time of hospital admission. DESIGN: Development and validation of a multivariable risk model using prospectively collected data. Transparent Reporting of a multivariable model for Individual Prognosis Or Diagnosis recommendations were followed to develop and report the prediction model. SETTING: A 560-bed teaching hospital, with a 22-bed ICU and 24-hour Emergency Department in Melbourne, Australia. PATIENTS: A total of 45,170 emergency admissions of 30,064 adult patients (≥18 yr), with an inpatient length of stay greater than 24 hours, admitted under acute medical or surgical hospital services between 2015 and 2017. MEASUREMENTS AND MAIN RESULTS: The outcome was MET review within 48 hours of emergency admission. Thirty candidate variables were selected from a routinely collected hospital dataset based on their availability to clinicians at the time of admission. The final model included nine variables: age; comorbid alcohol-related behavioral diagnosis; history of heart failure, chronic obstructive pulmonary disease (COPD), or renal disease; admitted from residential care; Charlson Comorbidity Index score 1 or 2, or 3+; at least one planned and one emergency admission in the last year; and admission diagnosis and one interaction (past history of COPD × admission diagnosis). The discrimination of the model was comparable in the training (C-statistics 0.82; 95% CI, 0.81-0.83) and the validation set (0.81; 0.80-0.83). Calibration was reasonable for training and validation sets. CONCLUSIONS: Using only nine predictor variables available to clinicians at the time of admission, the MET-risk model can predict the risk of MET review during the first 48 hours of an emergency admission. Model utility in improving patient outcomes requires further investigation.


Assuntos
Deterioração Clínica , Doença Pulmonar Obstrutiva Crônica , Adulto , Serviço Hospitalar de Emergência , Hospitais de Ensino , Humanos , Pacientes Internados , Unidades de Terapia Intensiva , Admissão do Paciente , Estudos Retrospectivos
8.
Opt Lett ; 47(3): 661-664, 2022 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-35103697

RESUMO

Here we report a photonic crystal with a split ring unit cell shape that demonstrates an order of magnitude larger peak electric field energy density compared with that of a traditional photonic crystal. Split ring photonic crystals possess several subwavelength tuning parameters, including split ring rotation angle and split width, which can be leveraged to modify light confinement for specific applications. Modifying the split ring's parameters allows for tuning of the peak electric field energy density in the split by over one order of magnitude and tuning of the air band edge wavelength by nearly 10 nm in the near infrared region. Designed to have highly focused optical energy in an accessible subwavelength gap, the split ring photonic crystal is well suited for applications including optical biosensing, optical trapping, and enhanced emission from a quantum dot or other nanoscale emitter that could be incorporated in the split.

9.
Environ Sci Technol ; 56(1): 392-402, 2022 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-34910457

RESUMO

This study reveals key disinfection byproduct (DBP) toxicity drivers in drinking water across the United States. DBPs, which are ubiquitous in drinking water, form by the reaction of disinfectants, organic matter, bromide, and iodide and are generally present at 100-1000× higher concentrations than other contaminants. DBPs are linked to bladder cancer, miscarriage, and birth defects in human epidemiologic studies, but it is not known as to which DBPs are responsible. We report the most comprehensive investigation of drinking water toxicity to date, with measurements of extracted whole-water mammalian cell chronic cytotoxicity, over 70 regulated and priority unregulated DBPs, and total organic chlorine, bromine, and iodine, revealing a more complete picture of toxicity drivers. A variety of impacted waters were investigated, including those impacted by wastewater, agriculture, and seawater. The results revealed that unregulated haloacetonitriles, particularly dihaloacetonitriles, are important toxicity drivers. In seawater-impacted water treated with chloramine, toxicity was driven by iodinated DBPs, particularly iodoacetic acids. In chlorinated waters, the combined total organic chlorine and bromine was highly and significantly correlated with toxicity (r = 0.94, P < 0.01); in chloraminated waters, total organic iodine was highly and significantly correlated with toxicity (r = 0.80, P < 0.001). These results indicate that haloacetonitriles and iodoacetic acids should be prioritized in future research for potential regulation consideration.


Assuntos
Desinfetantes , Água Potável , Poluentes Químicos da Água , Purificação da Água , Animais , Cloro , Desinfetantes/toxicidade , Desinfecção , Halogenação , Humanos , Mamíferos , Estados Unidos , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/toxicidade , Purificação da Água/métodos
10.
Environ Sci Technol ; 56(12): 8245-8254, 2022 06 21.
Artigo em Inglês | MEDLINE | ID: mdl-35638116

RESUMO

Nitrification and biofilm growth within distribution systems remain major issues for drinking water treatment plants utilizing chloramine disinfection. Many chloraminated plants periodically switch to chlorine disinfection for several weeks to mitigate these issues, known as "chlorine burns". The evaluation of disinfection byproduct (DBP) formation during chlorine burns beyond regulated DBPs is scarce. Here, we quantified an extensive suite of 80 regulated and emerging, unregulated DBPs from 10 DBP classes in drinking water from two U.S. drinking water plants during chlorine burn and chloramination treatments. Total organic halogen (TOX), including total organic chlorine, total organic bromine, and total organic iodine, was also quantified, and mammalian cell cytotoxicity of whole water mixtures was assessed in chlorine burn waters for the first time. TOX and most DBPs increased in concentration during chlorine burns, and one emerging DBP, trichloroacetaldehyde, reached 99 µg/L. THMs and HAAs reached concentrations of 249 and 271 µg/L, respectively. Two highly cytotoxic nitrogenous DBP classes, haloacetamides and haloacetonitriles, increased during chlorine burns, reaching up to 14.2 and 19.3 µg/L, respectively. Cytotoxicity did not always increase from chloramine treatment to chlorine burn, but a 100% increase in cytotoxicity was observed for one plant. These data highlight that consumer DBP exposure during chlorine burns can be substantial.


Assuntos
Desinfetantes , Água Potável , Poluentes Químicos da Água , Purificação da Água , Animais , Cloraminas , Cloro , Desinfecção , Halogenação , Halogênios , Mamíferos , Trialometanos , Poluentes Químicos da Água/toxicidade
11.
J Clin Monit Comput ; 36(6): 1611-1619, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35076834

RESUMO

To determine the efficacy of modern survival analysis methods for predicting sepsis onset in ICU, emergency, medical/surgical, and TCU departments. We performed a retrospective analysis on ICU, med/surg, ED, and TCU cases from multiple Mercy Health hospitals from August 2018 to March 2020. Patients in these departments were monitored by the Mercy Virtual vSepsis team and sepsis cases were determined and documented in the Mercy EHR via a rule-based engine utilizing clinical data. We used survival-based modeling methods to predict sepsis onset in these cases. The three survival methods that were used to predict the onset of severe sepsis and septic shock produced AUC values > 0.85 and each provided a median lead time of > 20 h prior to disease onset. This methodology improves upon previous work by demonstrating excellent model performance when generalizing survival-based prediction methods to both severe sepsis and septic shock as well as non-ICU departments.IRB InformationTrial Registration ID: 1,532,327-1.Trial Effective Date: 12/02/2019.


Assuntos
Sepse , Choque Séptico , Humanos , Choque Séptico/diagnóstico , Estudos Retrospectivos , Sepse/diagnóstico , Análise de Sobrevida , Hospitais , Serviço Hospitalar de Emergência , Unidades de Terapia Intensiva
12.
J Environ Sci (China) ; 117: 264-275, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35725078

RESUMO

Halogenated disinfection byproducts (DBPs) are an unintended consequence of drinking water disinfection, and can have significant toxicity. XAD resins are commonly used to extract and enrich trace levels of DBPs for comprehensive, nontarget identification of DBPs and also for in vitro toxicity studies. However, XAD resin recoveries for complete classes of halogenated DBPs have not been evaluated, particularly for low, environmentally relevant levels (ng/L to low µg/L). Thus, it is not known whether levels of DBPs or the toxicity of drinking water might be underestimated. In this study, DAX-8/XAD-2 layered resins were evaluated, considering both adsorption and elution from the resins, for extracting 66 DBPs from water. Results demonstrate that among the 7 classes of DBPs investigated, trihalomethanes (THMs), including iodo-THMs, were the most efficiently adsorbed, with recovery of most THMs ranging from 50%-96%, followed by halonitromethanes (40%-90%). The adsorption ability of XAD resins for haloacetonitriles, haloacetamides, and haloacetaldehydes was highly dependent on the individual species. The adsorption capacity of XAD resins for haloacetic acids was lower (5%-48%), even after adjusting to pH 1 before extraction. Recovery efficiency for most DBPs was comparable with their adsorption, as most were eluted effectively from XAD resins by ethyl acetate. DBP polarity and molecular weight were the two most important factors that determine their recovery. Recovery of trichloromethane, iodoacetic acid, chloro- and iodo-acetonitrile, and chloroacetamide were among the lowest, which could lead to underestimation of toxicity, particularly for iodoacetic acid and iodo-acetonitrile, which are highly toxic.


Assuntos
Desinfetantes , Água Potável , Poluentes Químicos da Água , Purificação da Água , Acetonitrilas , Desinfetantes/análise , Desinfetantes/toxicidade , Desinfecção , Halogenação , Iodoacetatos , Trialometanos/análise , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/toxicidade , Purificação da Água/métodos
13.
J Environ Sci (China) ; 117: 161-172, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35725068

RESUMO

A survey was conducted at eight U.S. drinking water plants, that spanned a wide range of water qualities and treatment/disinfection practices. Plants that treated heavily-wastewater-impacted source waters had lower trihalomethane to dihaloacetonitrile ratios due to the presence of more organic nitrogen and HAN precursors. As the bromide to total organic carbon ratio increased, there was more bromine incorporation into DBPs. This has been shown in other studies for THMs and selected emerging DBPs (HANs), whereas this study examined bromine incorporation for a wider group of emerging DBPs (haloacetaldehydes, halonitromethanes). Moreover, bromine incorporation into the emerging DBPs was, in general, similar to that of the THMs. Epidemiology studies that show an association between adverse health effects and brominated THMs may be due to the formation of brominated emerging DBPs of heath concern. Plants with higher free chlorine contact times before ammonia addition to form chloramines had less iodinated DBP formation in chloraminated distribution systems, where there was more oxidation of the iodide to iodate (a sink for the iodide) by the chlorine. This has been shown in many bench-scale studies (primarily for iodinated THMs), but seldom in full-scale studies (where this study also showed the impact on total organic iodine. Collectively, the THMs, haloacetic acids, and emerging DBPs accounted for a significant portion of the TOCl, TOBr, and TOI; however, ∼50% of the TOCl and TOBr is still unknown. The correlation of the sum of detected DBPs with the TOCl and TOBr suggests that they can be used as reliable surrogates.


Assuntos
Desinfetantes , Água Potável , Poluentes Químicos da Água , Purificação da Água , Bromo , Cloro , Desinfetantes/análise , Desinfecção , Halogenação , Iodetos , Trialometanos/análise , Poluentes Químicos da Água/análise
14.
Lancet Oncol ; 22(10): e456-e465, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34592195

RESUMO

Integration of external control data, with patient-level information, in clinical trials has the potential to accelerate the development of new treatments in neuro-oncology by contextualising single-arm studies and improving decision making (eg, early stopping decisions). Based on a series of presentations at the 2020 Clinical Trials Think Tank hosted by the Society of Neuro-Oncology, we provide an overview on the use of external control data representative of the standard of care in the design and analysis of clinical trials. High-quality patient-level records, rigorous methods, and validation analyses are necessary to effectively leverage external data. We review study designs, statistical methods, risks, and potential distortions in using external data from completed trials and real-world data, as well as data sources, data sharing models, ongoing work, and applications in glioblastoma.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias Encefálicas/tratamento farmacológico , Ensaios Clínicos Controlados como Assunto , Glioblastoma/tratamento farmacológico , Oncologia , Neurologia , Projetos de Pesquisa , Antineoplásicos/efeitos adversos , Neoplasias Encefálicas/patologia , Glioblastoma/patologia , Humanos , Disseminação de Informação , Resultado do Tratamento
15.
Mol Pharmacol ; 100(4): 372-387, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34353882

RESUMO

ONC201 is a first-in-class imipridone compound that is in clinical trials for the treatment of high-grade gliomas and other advanced cancers. Recent studies identified that ONC201 antagonizes D2-like dopamine receptors at therapeutically relevant concentrations. In the current study, characterization of ONC201 using radioligand binding and multiple functional assays revealed that it was a full antagonist of the D2 and D3 receptors (D2R and D3R) with low micromolar potencies, similar to its potency for antiproliferative effects. Curve-shift experiments using D2R-mediated ß-arrestin recruitment and cAMP assays revealed that ONC201 exhibited a mixed form of antagonism. An operational model of allostery was used to analyze these data, which suggested that the predominant modulatory effect of ONC201 was on dopamine efficacy with little to no effect on dopamine affinity. To investigate how ONC201 binds to the D2R, we employed scanning mutagenesis coupled with a D2R-mediated calcium efflux assay. Eight residues were identified as being important for ONC201's functional antagonism of the D2R. Mutation of these residues followed by assessing ONC201 antagonism in multiple signaling assays highlighted specific residues involved in ONC201 binding. Together with computational modeling and simulation studies, our results suggest that ONC201 interacts with the D2R in a bitopic manner where the imipridone core of the molecule protrudes into the orthosteric binding site, but does not compete with dopamine, whereas a secondary phenyl ring engages an allosteric binding pocket that may be associated with negative modulation of receptor activity. SIGNIFICANCE STATEMENT: ONC201 is a novel antagonist of the D2 dopamine receptor with demonstrated efficacy in the treatment of various cancers, especially high-grade glioma. This study demonstrates that ONC201 antagonizes the D2 receptor with novel bitopic and negative allosteric mechanisms of action, which may explain its high selectivity and some of its clinical anticancer properties that are distinct from other D2 receptor antagonists widely used for the treatment of schizophrenia and other neuropsychiatric disorders.


Assuntos
Antineoplásicos/metabolismo , Antagonistas dos Receptores de Dopamina D2/metabolismo , Imidazóis/metabolismo , Piridinas/metabolismo , Pirimidinas/metabolismo , Receptores de Dopamina D2/metabolismo , Regulação Alostérica/efeitos dos fármacos , Regulação Alostérica/fisiologia , Animais , Antineoplásicos/química , Antineoplásicos/farmacologia , Células CHO , Cricetinae , Cricetulus , Antagonistas dos Receptores de Dopamina D2/química , Antagonistas dos Receptores de Dopamina D2/farmacologia , Relação Dose-Resposta a Droga , Células HEK293 , Humanos , Imidazóis/química , Imidazóis/farmacologia , Ligação Proteica/efeitos dos fármacos , Ligação Proteica/fisiologia , Estrutura Secundária de Proteína , Piridinas/química , Piridinas/farmacologia , Pirimidinas/química , Pirimidinas/farmacologia , Receptores de Dopamina D2/química
16.
EMBO J ; 36(19): 2907-2919, 2017 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-28877996

RESUMO

Alternative lengthening of telomeres (ALT) is a telomere lengthening pathway that predominates in aggressive tumors of mesenchymal origin; however, the underlying mechanism of telomere synthesis is not fully understood. Here, we show that the BLM-TOP3A-RMI (BTR) dissolvase complex is required for ALT-mediated telomere synthesis. We propose that recombination intermediates formed during strand invasion are processed by the BTR complex, initiating rapid and extensive POLD3-dependent telomere synthesis followed by dissolution, with no overall exchange of telomeric DNA. This process is counteracted by the SLX4-SLX1-ERCC4 complex, which promotes resolution of the recombination intermediate, resulting in telomere exchange in the absence of telomere extension. Our data are consistent with ALT being a conservative DNA replication process, analogous to break-induced replication, which is dependent on BTR and counteracted by SLX4 complex-mediated resolution events.


Assuntos
Replicação do DNA/genética , RecQ Helicases/fisiologia , Recombinases/fisiologia , Recombinação Genética/genética , Homeostase do Telômero/genética , Células Cultivadas , DNA Topoisomerases Tipo I/metabolismo , DNA Topoisomerases Tipo I/fisiologia , DNA Polimerase Dirigida por DNA/metabolismo , DNA Polimerase Dirigida por DNA/fisiologia , Humanos , Complexos Multienzimáticos/metabolismo , Complexos Multienzimáticos/fisiologia , RecQ Helicases/metabolismo , Recombinases/metabolismo , Telômero/metabolismo
17.
Environ Sci Technol ; 55(5): 2908-2918, 2021 03 02.
Artigo em Inglês | MEDLINE | ID: mdl-33594894

RESUMO

Swimming pools are commonly treated with chlorine, which reacts with the natural organic matter and organic matter introduced by swimmers and form disinfection byproducts (DBPs) that are associated with respiratory-related issues, including asthma, in avid swimmers. We investigated a complementary disinfectant to chlorine, copper-silver ionization (CSI), with the aim of lowering the amount of chlorine used in pools and limiting health risks from DBPs. We sampled an indoor and outdoor pool treated with CSI-chlorine during the swimming season in 2017-2018 and measured 71 DBPs, speciated total organic halogen, in vitro mammalian cell cytotoxicity, and N-acetyl-l-cysteine (NAC) thiol reactivity as a cytotoxicity predictor. Controlled, simulated swimming pools were also investigated. Emerging DBP concentrations decreased by as much as 80% and cytotoxicity decreased as much as 70% in the indoor pool when a lower chlorine residual (1.0 mg/L) and CSI was used. Some DBPs were quantified for the first time in pools, including chloroacetaldehyde (up to 10.6 µg/L), the most cytotoxic haloacetaldehyde studied to date and a major driver of the measured cytotoxicity in this study. Three highly toxic iodinated haloacetic acids (iodoacetic acid, bromoiodoacetic acid, and chloroiodoacetic acid) were also quantified in pools for the first time. We also found that the NAC thiol reactivity was significantly correlated to cytotoxicity, which could be useful for predicting the cytotoxicity of swimming pool waters in future studies.


Assuntos
Desinfetantes , Piscinas , Poluentes Químicos da Água , Animais , Cloro , Cobre/toxicidade , Desinfetantes/toxicidade , Desinfecção , Prata , Trialometanos/análise , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/toxicidade
18.
Matern Child Health J ; 25(4): 676-683, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33247824

RESUMO

OBJECTIVES: Adequate weight gain is important to reduce the risk of infant morbidity and mortality. Breastfeeding is also important to prevent infant morbidity. Home visitation programs have been used for many years to prevent infant and child morbidity and maltreatment. Nurses for Newborns is a home visitation model with the goals of preventing infant mortality and maltreatment. This study evaluated the impact of the Nurses for newborns program on infant weight gain and breastfeeding. METHODS: We used a retrospective case-control propensity matched model to evaluate outcomes. We received secondary data from Vanderbilt Research Derivative Group and Tennessee Office of Health Statistics to conduct the analysis. Data were accessed for infants born in 2013, 2014 and 2015 and limited to those with at least four NFN visits and no more than 2 days in the NICU. We conducted chi square analysis and logistic regression to test our hypotheses. RESULTS: NFN infants were two times more likely to triple their birth weight in the first year. NFN infants were also two times more likely to be breast fed at 2 weeks, but this finding was not statistically significant. CONCLUSIONS FOR PRACTICE: Home visitation models can be effective in encouraging adequate weight gain in the first year of life. In addition, home visitors can encourage women to breastfeed. Significance Home visitation models can prevent infant morbidity and mortality. Few studies, however, have demonstrated that infant weight gain, an important factor in the health of infants, can be enhanced using this approach. In addition, home visitation can positively impact breastfeeding, another important factor in preventing infant morbidity. Findings from this study suggest that the NFN model of home visitation can improve weight gain and breastfeeding, indicating the impact of this model.


Assuntos
Aleitamento Materno , Aumento de Peso , Estudos de Casos e Controles , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Tennessee
19.
BMC Palliat Care ; 20(1): 70, 2021 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-34001076

RESUMO

BACKGROUND: Palliative care has proven over time that it can help prolong life spans with the use of hospices. The literature reports that most patients with cancer are diagnosed in the later stages and since there is no cure, they will require palliative care at some point during their illness. However, most developing countries, including India, have failed to establish hospices; as a result, large numbers of cancer patients are still deprived of palliative care. To initiate better access to hospices, it is important to understand the benefits of the same. Therefore, the present study aims to explore the advantages of hospice care from the perspectives of advanced cancer patients living in hospice centres. METHODS: The present study uses the method of exploratory research. Using purposive sampling, 8 participants living in a hospice in Bengaluru, India were selected and semi-structured interviews were conducted to collect data from the patients. This data was analysed using thematic analysis. Any underlying patterns were determined to identify the evident themes that emerged from the data. RESULTS: After thematic analysis, 4 themes were identified, namely, pain management, altruism, a good death, and overall satisfaction. Within some themes, there were specific sub-themes that have been illustrated using direct quotes from the interviews. CONCLUSION: The findings of this study suggest that hospice centres play an important role in helping patients to come out of the trauma during the advanced stages of cancer. A sense of relief can be given to the patient by implementing palliative care. This is possible by building more hospice centres in the country where all individuals, irrespective of their financial status, can opt for the service. Having palliative care will provide dignified death to the patients.


Assuntos
Cuidados Paliativos na Terminalidade da Vida , Hospitais para Doentes Terminais , Neoplasias , Assistência Terminal , Humanos , Neoplasias/terapia , Cuidados Paliativos , Pesquisa Qualitativa
20.
J Clin Nurs ; 30(7-8): 903-917, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33331081

RESUMO

AIMS AND OBJECTIVES: To explore the use and student outcomes of Team-Based Learning in nursing education. BACKGROUND: Team-Based Learning is a highly structured, evidence-based, student-centred learning strategy that enhances student engagement and facilitates deep learning in a variety of disciplines including nursing. However, the breadth of Team-Based Learning application in nursing education and relevant outcomes are not currently well understood. DESIGN: A scoping review of international, peer-reviewed research studies was undertaken according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. METHODS: The following databases were searched on 7 May 2020: Cumulative Index of Nursing and Allied Health Literature, MEDLINE Complete, PsycINFO and Education Resources Information Center. Search terms related to nursing, education and Team-Based Learning. Original research studies, published in English, and reporting on student outcomes from Team-Based Learning in nursing education programmes were included. RESULTS: Of the 1081 potentially relevant citations, 41 studies from undergraduate (n = 29), postgraduate (n = 4) and hospital (n = 8) settings were included. The most commonly reported student outcomes were knowledge or academic performance (n = 21); student experience, satisfaction or perceptions of Team-Based Learning (n = 20); student engagement with behaviours or attitudes towards Team-Based Learning (n = 12); and effect of Team-Based Learning on teamwork, team performance or collective efficacy (n = 6). Only three studies reported clinical outcomes. CONCLUSIONS: Over the last decade, there has been a growing body of knowledge related to the use of Team-Based Learning in nursing education. The major gaps identified in this scoping review were the lack of randomised controlled trials and the dearth of studies of Team-Based Learning in postgraduate and hospital contexts. RELEVANCE TO CLINICAL PRACTICE: This scoping review provides a comprehensive understanding of the use and student outcomes of Team-Based Learning in nursing education and highlights the breadth of application of Team-Based Learning and variability in the outcomes reported.


Assuntos
Educação em Enfermagem , Estudantes de Enfermagem , Humanos , Estudantes
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