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1.
J Biol Chem ; 299(3): 102980, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36739951

RESUMO

Replication of the 30-kilobase genome of SARS-CoV-2, responsible for COVID-19, is a key step in the coronavirus life cycle that requires a set of virally encoded nonstructural proteins such as the highly conserved Nsp13 helicase. However, the features that contribute to catalytic properties of Nsp13 are not well established. Here, we biochemically characterized the purified recombinant SARS-CoV-2 Nsp13 helicase protein, focusing on its catalytic functions, nucleic acid substrate specificity, nucleotide/metal cofactor requirements, and displacement of proteins from RNA molecules proposed to be important for its proofreading role during coronavirus replication. We determined that Nsp13 preferentially interacts with single-stranded DNA compared with single-stranded RNA to unwind a partial duplex helicase substrate. We present evidence for functional cooperativity as a function of Nsp13 concentration, which suggests that oligomerization is important for optimal activity. In addition, under single-turnover conditions, Nsp13 unwound partial duplex RNA substrates of increasing double-stranded regions (16-30 base pairs) with similar efficiency, suggesting the enzyme unwinds processively in this range. We also show Nsp13-catalyzed RNA unwinding is abolished by a site-specific neutralizing linkage in the sugar-phosphate backbone, demonstrating continuity in the helicase-translocating strand is essential for unwinding the partial duplex substrate. Taken together, we demonstrate for the first time that coronavirus helicase Nsp13 disrupts a high-affinity RNA-protein interaction in a unidirectional and ATP-dependent manner. Furthermore, sensitivity of Nsp13 catalytic functions to Mg2+ concentration suggests a regulatory mechanism for ATP hydrolysis, duplex unwinding, and RNA protein remodeling, processes implicated in SARS-CoV-2 replication and proofreading.


Assuntos
RNA-Polimerase RNA-Dependente de Coronavírus , SARS-CoV-2 , Proteínas não Estruturais Virais , Humanos , Trifosfato de Adenosina/metabolismo , COVID-19/virologia , RNA , SARS-CoV-2/enzimologia , SARS-CoV-2/genética , Proteínas não Estruturais Virais/genética , Proteínas não Estruturais Virais/metabolismo , RNA-Polimerase RNA-Dependente de Coronavírus/genética , RNA-Polimerase RNA-Dependente de Coronavírus/metabolismo
2.
BMC Public Health ; 24(1): 1080, 2024 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-38637757

RESUMO

Movement-related behaviors (physical activity [PA], sedentary behavior [SB], and sleep) and diet interact with each other and play important roles in health indicators in youth. This systematic review aimed to investigate how PA, SB, sleep, and diet cluster in youth by biological sex; and to examine which cluster are associated with health indicators. This study was registered in PROSPERO (number: CRD42018094826). Five electronic databases were assessed. Eligibility criteria allowed studies that included youth (aged 19 years and younger), and only the four behaviors {PA, SB, sleep, and diet (ultra-processed foods [UPF]; fruits and vegetables [FV])} analyzed by applying data-based cluster procedures. From 12,719 articles screened; 23 were included. Of these, four investigated children, and ten identified clusters by biological sex. Sixty-six mixed cluster were identified including, 34 in mixed-sex samples, 10 in boys and 11 in girls. The most frequent clusters in mixed-sex samples were "High SB UPF Low Sleep", "Low PA High SB Satisfactory Sleep", and "High PA". The main difference in profiles according to sex was that girls' clusters were characterized by high sleep duration, whereas boys' clusters by high PA. There were a few associations found between cluster types and health indicators, highlighting that youth assigned to cluster types with low PA exhibited higher adiposity. In conclusion, the youth presented a range of clusters of behaviors, typically exhibiting at least one unhealthy behavior. Similar patterns were observed in both sexes with the biggest difference in time of sleep for girls and PA for boys. These findings underscore the importance of intervention strategies targeting multiple behaviors simultaneously to enhance health risk profiles and indicators in children and adolescents.


Assuntos
Dieta , Exercício Físico , Obesidade , Comportamento Sedentário , Adolescente , Criança , Feminino , Humanos , Masculino , Comportamentos Relacionados com a Saúde , Atividade Motora , Sono
3.
Ethn Health ; 29(2): 179-198, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37970802

RESUMO

INTRODUCTION: Approximately 42.5% of adults aged 18-59 in the United States is estimated to be affected by human papillomavirus (HPV) infection. However, Asian Americans have the lowest HPV vaccination initiation rate compared to other racial groups. This study aims to explore the experiences of HPV and the HPV vaccination among ethnic Korean women and men in the United States. METHODS: A total of 33 ethnic Korean and Korean Americans aged 27-45 years living in the U.S. were recruited via word-of-mouth and social media using a purposive sampling strategy. They participated in an online survey. Of the 33 participants, 29 (14 females and 15 males) participated in in-depth interviews via password-protected Zoom. A content analysis approach was used to analyze the interviews. RESULTS: Only 32% of participants had received the HPV vaccine at least once (female: 35.3%, male: 12.5%). Six major themes emerged from data analysis: (1) awareness of HPV, HPV vaccine, and HPV-associated cancers; (2) attitudes toward the HPV vaccine; (3) barriers to HPV vaccination; (4) women's experiences and preferences for pap smear testing; (5) experiences with HPV diagnosis; and (6) HPV and HPV vaccination education preferences. CONCLUSION: The findings highlight cultural factors that may impede the discussion about and uptake of HPV vaccination and HPV-associated cancer screening, which emphasize the need for culturally appropriate interventions to overcome stigma around HPV and enhance vaccination rates. Healthcare providers should consider ethnic and cross-cultural differences perceptions to effectively HPV-related health information. This study provides insight into the experiences and understanding of HPV and vaccination among ethnic Korean men and women, laying the groundwork for developing culturally-tailored programs that sim to increase HPV vaccination rates and mitigate the stigma and impact of HPV-related disease in this community.


Assuntos
Infecções por Papillomavirus , Vacinas contra Papillomavirus , Adulto , Humanos , Feminino , Masculino , Estados Unidos , Infecções por Papillomavirus/prevenção & controle , Conhecimentos, Atitudes e Prática em Saúde , Vacinação , República da Coreia , Aceitação pelo Paciente de Cuidados de Saúde
4.
Diabetes Spectr ; 37(1): 65-85, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38385094

RESUMO

Objective: The objective of this study was to synthesize English and Spanish literature to determine whether electronic health interventions (EHIs) such as telehealth, telemedicine, digital health, and mobile health (mHealth) improve A1C, blood glucose, BMI, and/or weight among Hispanic/Latino adults with type 2 diabetes or overweight/obesity in the Americas. Design and methods: Searches were conducted in June 2021 using the Scientific Electronic Library Online, Cumulative Index of Nursing and Allied Health Literature, PubMed, and PsycInfo literature databases. Studies were identified that investigated the effect of an EHI on A1C, blood glucose, BMI, or weight in populations that were ≥12% Hispanic/Latino adults with type 2 diabetes or overweight/obesity, were conducted in the Americas, and were published in English or Spanish. Study quality was determined using the Quality Index Score. Data were extracted and synthesized, and themes were identified. Results: Twenty-five studies met inclusion criteria, including 23 in English (from the United States) and two in Spanish (from Chile). A total of 22 investigated type 2 diabetes, and three investigated overweight/obesity. The studies encompassed 6,230 participants, including 3,413 Hispanic/Latino adults. Sixty-three percent of studies demonstrated significant improvements in A1C or blood glucose and 67% in weight. Thirteen studies offered an EHI in both English and Spanish, and six offered the intervention in either English or Spanish alone. All EHIs involving mHealth exclusively and most (90%) involving more than one electronic modality demonstrated a higher number of significant findings compared with those having only one EHI modality, especially telehealth (44.4%). EHIs lasting ≤12 months had more significant findings (72.7%) than those lasting >12 months (50%). Six studies had industry-related funding, with 83.3% of those demonstrating significant improvements in outcomes. Conclusion: EHIs improved A1C and weight in adults (n = 4,355), including 45.5% Hispanic/Latino adults. mHealth and EHIs using more than one electronic modality and those lasting ≤12 months were especially effective. However, overall study quality was modest. Future research should be conducted in Spanish-speaking countries in Latin America and should compare the effectiveness of different EHI modalities.

5.
J Adv Nurs ; 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38558297

RESUMO

AIM: To describe the current state of the literature on nurses' and midwives' knowledge, perceptions and experiences of managing parental postnatal depression (PPND). DESIGN: The Joanna Briggs Institute scoping review method and the PRISMA extension for Scoping Reviews guided the work. DATA SOURCES: A systematic search of PubMed, CINAHL, Embase, MEDLINE, PsycINFO and Scopus databases was conducted in January and February 2023. REVIEW METHODS: Peer-reviewed primary research articles published in English between 2012 and 2023 that involved nurses or midwives managing PPND were included. Rayyan was used to screen titles, abstracts and full-text articles. A spreadsheet was used to organize extracted data and synthesize results. RESULTS: Twenty-nine articles met the inclusion criteria. Most study samples were of mothers, and few were from middle- and lower-income countries. Nurses and midwives lacked knowledge about PPND, yet they felt responsible for its management. Nurses and midwives faced significant organizational and systems-level challenges in managing PPND. However, nurses and midwives facilitated PPND care in collaboration with other healthcare providers. CONCLUSION: The review highlights significant gaps in the nurses' and midwives' care of PPND. Educational programmes are necessary to increase nurse and midwife knowledge of PPND and strategies for its management, including facilitating collaboration across the healthcare system and eliminating organizational and systemic-related barriers. Additional focused research is needed on nurses' and midwives' knowledge, perception of and experience with PPND beyond mothers, such as with fathers, sexually and gender-minoritized parents and surrogate mothers. Finally, additional research is needed in middle- and lower-income countries where nurses and midwives may face a higher burden of and unique cultural considerations in managing PPND. IMPACT: PPND can affect the parent's mental and physical health and relationship with their child. If left untreated, PPND can lead to long-term consequences, including child developmental delays, behavioural problems and difficulties with parental-child attachment. REPORTING METHOD: This scoping review adheres to PRISMA Extension for Scoping Review guidelines and the Joanna Briggs Institute scoping review method. PATIENT OR PUBLIC CONTRIBUTION: This research is a scoping review of published peer-reviewed studies.

6.
Cancer Causes Control ; 34(Suppl 1): 35-44, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37326779

RESUMO

The Cancer Prevention and Control Research Network (CPCRN) is a national network of academic, public health, and community organizational partners across multiple geographic sites who collaborate to reduce the cancer burden in diverse communities. Given key recommendations that suggest the need for cross-disciplinary collaboration in cancer prevention and control, we sought to explore the historical and contemporary evolution of health equity and disparities research as an area of focus within the CPCRN over time. We conducted 22 in-depth interviews with former and current leaders, co-investigators, and other members of the network. Several key themes emerged from data that were analyzed and interpreted using a constructivist, reflexive, thematic analysis approach. Nearly all participants reported a strong focus on studying health disparities since the inception of the CPCRN, which offered the network a distinct advantage in recent years for incorporating an intentional focus on health equity. Recent law enforcement injustices and the inequities observed during the COVID-19 pandemic have further invigorated network activities around health equity, such as development of a health equity-focused workgroup toolkit, among other cross-center activities. Several participants noted that, in terms of deep, meaningful, and impactful health equity-oriented research, there are still great strides for the network to make, while also acknowledging CPCRN as well-aligned with the national dialogue led by federal agency partners around health equity. Finally, several future directions were mentioned by the participants, including a focus on supporting a diverse workforce and engaging organizational partners and community members in equity-focused research. Findings from these interviews provide direction for the network in advancing the science in cancer prevention and control, with a strengthened focus on health equity.


Assuntos
Equidade em Saúde , Neoplasias , Humanos , Ciência da Implementação , Pandemias , Atenção à Saúde , Neoplasias/epidemiologia , Neoplasias/prevenção & controle
7.
Cancer Causes Control ; 34(Suppl 1): 217-239, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37354320

RESUMO

PURPOSE: The Cancer Prevention and Control Research Network (CPCRN) is a national network focused on accelerating the translation of cancer prevention and control research evidence into practice through collaborative, multicenter projects in partnership with diverse communities. From 2003 to 2022, the CPCRN included 613 members. METHODS: We: (1) characterize the extent and nature of collaborations through a bibliometric analysis of 20 years of Network publications; and (2) describe key features and functions of the CPCRN as related to organizational structure, productivity, impact, and focus on health equity, partnership development, and capacity building through analysis of 22 in-depth interviews and review of Network documentation. RESULTS: Searching Scopus for multicenter publications among the CPCRN members from their time of Network engagement yielded 1,074 collaborative publications involving two or more members. Both the overall number and content breadth of multicenter publications increased over time as the Network matured. Since 2004, members submitted 123 multicenter grant applications, of which 72 were funded (59%), totaling more than $77 million secured. Thematic analysis of interviews revealed that the CPCRN's success-in terms of publication and grant productivity, as well as the breadth and depth of partnerships, subject matter expertise, and content area foci-is attributable to: (1) its people-the inclusion of members representing diverse content-area interests, multidisciplinary perspectives, and geographic contexts; (2) dedicated centralized structures and processes to enable and evaluate collaboration; and (3) focused attention to strategically adapting to change. CONCLUSION: CPCRN's history highlights organizational, strategic, and practical lessons learned over two decades to optimize Network collaboration for enhanced collective impact in cancer prevention and control. These insights may be useful to others seeking to leverage collaborative networks to address public health problems.


Assuntos
Equidade em Saúde , Neoplasias , Humanos , Atenção à Saúde , Saúde Pública , Fortalecimento Institucional , Neoplasias/prevenção & controle
8.
Rheumatology (Oxford) ; 62(2): 794-803, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-35608307

RESUMO

OBJECTIVE: To investigate changes in health-related quality of life (HRQoL) in children and young people with JIA (Juvenile Idiopathic Arthritis) over 3 years following diagnosis. METHODS: Data on children and young people recruited to the Childhood Arthritis Prospective Study (CAPS) were selected if >5 years of age at diagnosis. HRQoL was assessed at diagnosis (baseline), 1 year and 3 years using the proxy-reported Child Health Questionnaire (CHQ) completed by a parent or guardian. The CHQ measures aspects of HRQoL including physical functioning and mental health. Analyses included descriptive statistics, comparison with a US reference population and analysis of CHQ scores longitudinally and by gender and age of onset. RESULTS: Using CHQ data from parents/guardians of 182 CAPS study participants [median age 9.6 years (interquartile range 7.2-12.2)], all HRQoL domains significantly improved over the 3 year follow-up, except general health perceptions. Physical health domains showed greater improvement than psychosocial domains, although psychosocial scores were generally higher than physical scores throughout. Although similar at diagnosis, at 1 year females had significantly worse HRQoL than males in physical functioning (P = 0.03), bodily pain (P = 0.03), mental health (P = 0.00), social-emotional (P = 0.02) and social-physical (P < 0.001). Differences largely remained at 3 years. Age at onset was not significantly associated with HRQoL. CONCLUSION: Children and young people with JIA have low HRQoL across domains compared with the reference population. This improves within 3 years of diagnosis, with the greatest improvement within the first year. Early developmentally appropriate clinical intervention is recommended to reduce both psychosocial and physical impact of JIA. The lower HRQoL scores of females require further investigation.


Assuntos
Artrite Juvenil , Qualidade de Vida , Masculino , Feminino , Humanos , Criança , Adolescente , Qualidade de Vida/psicologia , Artrite Juvenil/psicologia , Estudos Prospectivos , Pais , Dor , Inquéritos e Questionários
9.
J Exp Bot ; 74(17): 5088-5103, 2023 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-37338600

RESUMO

Large differences exist in the number of grains per spikelet across an individual wheat (Triticum aestivum L.) spike. The central spikelets produce the highest number of grains, while apical and basal spikelets are less productive, and the most basal spikelets are commonly only developed in rudimentary form. Basal spikelets are delayed in initiation, yet they continue to develop and produce florets. The precise timing or the cause of their abortion remains largely unknown. Here, we investigated the underlying causes of basal spikelet abortion using shading applications in the field. We found that basal spikelet abortion is likely to be the consequence of complete floret abortion, as both occur concurrently and have the same response to shading treatments. We detected no differences in assimilate availability across the spike. Instead, we show that the reduced developmental age of basal florets pre-anthesis is strongly associated with their increased abortion. Using the developmental age pre-abortion, we were able to predict final grain set per spikelet across the spike, alongside the characteristic gradient in the number of grains from basal to central spikelets. Future efforts to improve spikelet homogeneity across the spike could thus focus on improving basal spikelet establishment and increasing floret development rates pre-abortion.


Assuntos
Flores , Triticum , Triticum/fisiologia , Grão Comestível
10.
Psychol Med ; 53(8): 3692-3700, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35227337

RESUMO

BACKGROUND: Experiences of felt presence (FP) are well documented in neurology, neuropsychology and bereavement research, but systematic research in relation to psychopathology is limited. FP is a feature of sensorimotor disruption in psychosis, hypnagogic experiences, solo pursuits and spiritual encounters, but research comparing these phenomena remains rare. A comparative approach to the phenomenology of FP has the potential to identify shared and unique processes underlying the experience across these contexts, with implications for clinical understanding and intervention. METHODS: We present a mixed-methods analysis from three online surveys comparing FP across three diverse contexts: a population sample which included people with experience of psychosis and voice-hearing (study 1, N = 75), people with spiritual and spiritualist beliefs (study 2, N = 47) and practitioners of endurance/solo pursuits (study 3, N = 84). Participants were asked to provide descriptions of their FP experiences and completed questionnaires on FP frequency, hallucinatory experiences, dissociation, paranoia, social inner speech and sleep. Data and code for the study are available via OSF. RESULTS: Hierarchical linear regression analysis indicated that FP frequency was predicted by a general tendency to experience hallucinations in all three studies, although paranoia and gender (female > male) were also significant predictors in sample 1. Qualitative analysis highlighted shared and diverging phenomenology of FP experiences across the three studies, including a role for immersive states in FP. CONCLUSIONS: These data combine to provide the first picture of the potential shared mechanisms underlying different accounts of FP, supporting a unitary model of the experience.


Assuntos
Transtornos Psicóticos , Humanos , Masculino , Feminino , Transtornos Psicóticos/psicologia , Alucinações/psicologia , Inquéritos e Questionários , Emoções , Transtornos Paranoides
11.
J Pediatr Psychol ; 48(10): 825-841, 2023 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-37738667

RESUMO

OBJECTIVE: The Common Sense Self-Regulatory Model posits that beliefs about pain influence coping behaviors and subsequent physical and mental health outcomes in children/young people with chronic musculoskeletal conditions. It was unclear how and what beliefs had been investigated in this population, and whether there were similarities and differences in beliefs held about pain by those experiencing inflammatory versus noninflammatory musculoskeletal conditions. This scoping review addressed this gap. METHODS: A systematic search was conducted using four databases (MEDLINE, PsycINFO, Embase, and CINAHL) in November 2021. Primary studies exploring key stakeholders' (including children, parents, and/or healthcare professionals) beliefs about pain underlying pediatric chronic musculoskeletal conditions were synthesized. RESULTS: Eighteen articles were identified. Cross-sectional designs were predominantly used to explore beliefs (n = 6). The majority used questionnaires to assess beliefs (n = 12). Beliefs common across musculoskeletal conditions were that children/young people felt their pain was not understood by others, and pain affected their physical functioning. Differences included children/young people and parents thinking they had some ability to control pain, and causal beliefs relating to underlying disease activity. These pain beliefs were more likely to be held in relation to inflammatory diagnoses. In contrast, children/young people and parents were more likely to view pain as uncontrollable, with more uncertainty regarding underlying causes, relating to noninflammatory diagnoses. CONCLUSIONS: Methods used to explore pain beliefs were inconsistent. Studies identified similarities and differences which appear to be closely related to the underlying diagnosis. Findings justify further exploration to identify potentially modifiable targets to improve pain outcomes in this population.

12.
Eur J Pediatr ; 182(3): 1417-1423, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36692623

RESUMO

There remains a disparity between the outcomes of male and female prematurely born infants. Our aim was to assess the influence of sex on the requirement for late (> 7 days) postnatal corticosteroid (PNS) treatment and the outcomes following treatment. A retrospective whole population study of infants born at less than 28 weeks of gestation in all neonatal units in England between 2014 and 2018. The impact of exposure to at least five consecutive days of dexamethasone or hydrocortisone on bronchopulmonary dysplasia (BPD) at 36 weeks corrected gestation and survival to discharge from neonatal care was determined. Ten thousand, six hundred and fifty-five infants survived to seven days. Male sex was associated with an increased incidence of BPD (OR 1.41, 95%CI 1.287-1.552, p < 0.001) and death (OR 1.227, 95%CI 1.123-1.452, p < 0.001). Two thousand, three hundred and forty-four infants (22%) received at least one course of PNS at a median of 23 (IQR 15-40) days after birth. Males (23.6%) were more likely to receive PNS than females (20.1%), p < 0.001 and receive repeated courses (mean 1.67 compared to a mean of 1.59 in the females), p = 0.027. Multivariate regression analysis identified no significant differences in the incidence of BPD or death between male and females who received PNS.  Conclusions: Males and females had similar outcomes after receiving PNS, but a significantly greater proportion of males met the clinical threshold to receive PNS and were more likely to receive repeated courses which may expose them to a greater risk of adverse long-term outcomes. What is Known: • There remains a difference in outcomes of male and female infants born prematurely. • Prematurely born male infants were more likely to receive postnatal corticosteroids and a greater number of courses but had similar outcomes compared to female infants. What is New: • Postnatal corticosteroids have long-term adverse effects. Such outcomes should be considered when weighing up the risk-benefit ratio of prescribing postnatal corticosteroids, particularly in very prematurely born male infants.


Assuntos
Displasia Broncopulmonar , Glucocorticoides , Recém-Nascido , Lactente , Masculino , Feminino , Humanos , Glucocorticoides/efeitos adversos , Anti-Inflamatórios/uso terapêutico , Dexametasona/efeitos adversos , Recém-Nascido Prematuro , Estudos Retrospectivos , Corticosteroides/efeitos adversos , Displasia Broncopulmonar/epidemiologia , Displasia Broncopulmonar/etiologia
13.
Eur J Pediatr ; 182(7): 3301-3306, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37166537

RESUMO

Maternal cigarette smoking in pregnancy can adversely affect infant respiratory control. In utero nicotine exposure has been shown to blunt the infant ventilatory response to hypercapnia, which could increase the risk of sudden infant death syndrome. The potential impact of maternal second-hand smoke exposure, however, has not yet been determined. The aim of this study was to assess ventilatory response to added dead-space (inducing hypercapnia) in infants with second-hand smoke exposure during pregnancy, in infants whose mothers smoked and in controls (non-smoke exposed). Infants breathed through a face mask and specialised "tube-breathing" circuit, incorporating a dead space of 4.4 ml/kg body weight. The maximum minute ventilation (MMV) during added dead space breathing was determined and the time taken to achieve 63% of the MMV calculated (the time constant (TC) of the response). Infants were studied on the postnatal ward prior to discharge home. Thirty infants (ten in each group) were studied with a median gestational age of 39 [range 37-41] weeks, birthweight of 3.1 [2.2-4.0] kg, and postnatal age of 33 (21-62) h. The infants whose mothers had second-hand smoke exposure (median TC 42 s, p = 0.001), and the infants of cigarette smoking mothers (median TC 37 s, p = 0.002) had longer time constants than the controls (median TC 29 s). There was no significant difference between the TC of the infants whose mothers had second-hand smoke exposure and those whose mothers smoked (p = 0.112).    Conclusion: Second-hand smoke exposure during pregnancy was associated with a delayed newborn ventilatory response. What is Known: • Maternal cigarette smoking in pregnancy can adversely affect infant respiratory control. • The potential impact of maternal second-hand smoke exposure, however, has not yet been determined. What is New: • We have assessed the ventilatory response to added dead-space (inducing hypercapnia) in newborns with second-hand smoke exposure during pregnancy, in infants whose mothers smoked, and in controls (non-smoke exposed). • Maternal second-hand smoke exposure, as well as maternal smoking, during pregnancy was associated with a delayed newborn ventilatory response.


Assuntos
Efeitos Tardios da Exposição Pré-Natal , Poluição por Fumaça de Tabaco , Feminino , Gravidez , Recém-Nascido , Lactente , Humanos , Poluição por Fumaça de Tabaco/efeitos adversos , Hipercapnia , Mães , Peso ao Nascer
14.
Acta Paediatr ; 112(2): 246-251, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36403205

RESUMO

AIM: To determine if the use of closed-loop automated oxygen control (CLAC) reduced the incidence and duration of hypoxemic episodes (SpO2  < 92%) in ventilated infants born at or above 34 weeks of gestation. METHODS: Infants were studied on two consecutive days for 6 h each day. They were randomised to receive standard care (manual oxygen control) or standard care with a CLAC system (automated oxygen control) first. RESULTS: Sixteen infants with a median (IQR) gestational age of 37.4 (36.6-38.8) weeks were studied at a median (IQR) postmenstrual age of 38.8 (37.4-39.8) weeks. During the automated oxygen control period, infants spent less time in hypoxemia (SpO2  < 92%) (p = 0.033), episodes of desaturation were shorter (p = 0.001), the time spent within target SpO2 range (92%-96%) was increased (p = 0.001), and the FiO2 delivery was lower (p = 0.018). The time spent in hyperoxemia (SpO2  > 96%) was reduced during automated oxygen control (p = 0.011), the episodes of hyperoxemia were of shorter duration (p = 0.008) and fewer manual adjustments were made to the FiO2 (p = 0.005). CONCLUSIONS: Closed-loop automated oxygen control in ventilated infants born at or near term was associated with a reduction in the incidence and duration of hypoxemic episodes with more time spent in the target oxygen range.


Assuntos
Recém-Nascido Prematuro , Oxigênio , Recém-Nascido , Humanos , Lactente , Estudos Cross-Over , Respiração Artificial , Hipóxia/prevenção & controle , Oximetria , Oxigenoterapia
15.
Acta Paediatr ; 112(6): 1185-1189, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36656138

RESUMO

AIM: To evaluate closed-loop automated oxygen control (CLAC) in ventilated infants >33 weeks of gestation with different respiratory disease severities. METHODS: Infants were studied on two consecutive days for 6 h each day. They were randomised to receive standard care or standard care with CLAC (Oxygenie) first. Analyses were performed of the results of infants with or without an FiO2 ≥ 0.3 and infants with congenital diaphragmatic hernia (CDH). RESULTS: Thirty-one infants with a median (IQR) gestational age of 37.9 (37.1-38.9) weeks were studied at a median postmenstrual age (IQR) of 38.9 (37.4-39.8) weeks. In infants with an FiO2 ≥ 0.3 (n = 8), CLAC increased the time spent in target oxygen range (92-96%) by 61.6% (p = 0.018), whereas in infants with an FiO2 < 0.3, the time in target was increased by 3.8% (p = 0.019). During CLAC, only infants with an FiO2 ≥ 0.3 spent less time in hyperoxemia (SpO2 > 96%) (p = 0.012) and hyperoxemic episodes were shorter (p = 0.012). In both groups, CLAC reduced the duration of desaturations (SpO2 < 92%, p < 0.001). In CDH infants, CLAC increased the time spent in target oxygen range by 34% (p = 0.036) and the median duration of desaturations was reduced (p = 0.028). CONCLUSION: CLAC may be more useful in infants with more severe respiratory distress.


Assuntos
Hérnias Diafragmáticas Congênitas , Transtornos Respiratórios , Doenças Respiratórias , Humanos , Lactente , Recém-Nascido , Estudos Cross-Over , Hérnias Diafragmáticas Congênitas/terapia , Recém-Nascido Prematuro , Oxigênio , Respiração Artificial/métodos
16.
J Clin Nurs ; 32(17-18): 5632-5651, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36946424

RESUMO

BACKGROUND: Some traditional Chinese medicine (TCM)-based integrated health interventions have been used for depression, but pooled efficacy remains unknown. AIMS AND OBJECTIVES: This study aimed to systematically evaluate the efficacy of TCM-based integrated health interventions for relieving depression. DESIGN: Systematic review and meta-analysis. METHODS: A comprehensive literature search was conducted on 17 databases from inception up to June 2022. Randomised controlled trials (RCTs) that examined an integrated health intervention based on TCM theory for depression were included. The risk of bias was assessed using the second version of the Cochrane risk-of-bias tool for randomised trials, and the quality of evidence was evaluated using the Grading of Recommendations, Assessment, Development and Evaluation system. RESULTS: Eighteen RCTs with a total of 1448 depressed participants were included. Health care providers, mainly nurses (14 studies), implemented TCM-based integrated health interventions. The pooled results showed that TCM-based integrated health interventions had larger effects on reducing depressive symptoms (15 studies; standardised mean difference = -2.05; 95% CI: -2.74, -1.37; p < .00001) compared with usual care at posttreatment but showed no significant difference contrasted to cognitive behavioural therapy (two studies, p = .31). However, the overall evidence was low. CONCLUSIONS: The meta-analysis results indicated that TCM-based integrated health interventions were effective in reducing depression. However, the results should be interpreted with caution because of the low quality of the included studies. Future RCTs with rigorous designs should be conducted to provide robust evidence of the efficacy of TCM-based integrated health interventions in treating depression. RELEVANCE TO CLINICAL PRACTICE: TCM-based integrated health interventions might be a potentially effective alternative for depression. Nurses could play an important role in designing and providing TCM-based integrated nursing interventions for patients with depression. NO PATIENT OR PUBLIC CONTRIBUTION: This is a systematic review and meta-analysis based on data from previous studies.


Assuntos
Terapia Cognitivo-Comportamental , Psicoterapia , Humanos , Psicoterapia/métodos , Depressão/terapia , Depressão/etiologia , Medicina Tradicional Chinesa , Terapia Cognitivo-Comportamental/métodos
17.
Nurs Inq ; 30(4): e12589, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37583248

RESUMO

Sociocultural norms against women can contribute to promoting intimate partner violence (IPV) and shape women's decision to disclose IPV. A cross-cultural analysis of the existing literature is needed to present an overview of the influences of sociocultural norms on women's decisions regarding the disclosure of IPV across different cultural contexts. The purpose of the review was to synthesize published quantitative, qualitative, and mixed methods (MMs) studies to identify known sociocultural norms across different cultures that may influence women's decision to disclose IPV. The Whittemore and Knafl framework, Rayyan software, and PRISMA flow diagram were used. Databases included APA PsycInfo, CINAHL, PubMed, SocINDEX, and Women's Studies International. The quality of studies was assessed by the MMs appraisal tool. A total of 15 research articles written in English and published in peer-reviewed journals were included. Main categories emerged: (1) stigma surrounding IPV disclosure, victimization, and divorce; (2) gender roles; (3) preserving family honor; and (4) Children's well-being and future. A one-size-fits-all approach is not adequate for women who are considering disclosing IPV. Findings underscore that regardless of residing in individualistic countries, those sociocultural norms related to traditional gender roles and gender inequality are still important barriers to the disclosure of IPV among women with collectivist roots.

18.
J Biol Chem ; 296: 100395, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33567340

RESUMO

Chronic glucocorticoid exposure causes insulin resistance and muscle atrophy in skeletal muscle. We previously identified phosphoinositide-3-kinase regulatory subunit 1 (Pik3r1) as a primary target gene of skeletal muscle glucocorticoid receptors involved in the glucocorticoid-mediated suppression of insulin action. However, the in vivo functions of Pik3r1 remain unclear. Here, we generated striated muscle-specific Pik3r1 knockout (MKO) mice and treated them with a dexamethasone (DEX), a synthetic glucocorticoid. Treating wildtype (WT) mice with DEX attenuated insulin activated Akt activity in liver, epididymal white adipose tissue, and gastrocnemius (GA) muscle. This DEX effect was diminished in GA muscle of MKO mice, therefore, resulting in improved glucose and insulin tolerance in DEX-treated MKO mice. Stable isotope labeling techniques revealed that in WT mice, DEX treatment decreased protein fractional synthesis rates in GA muscle. Furthermore, histology showed that in WT mice, DEX treatment reduced GA myotube diameters. In MKO mice, myotube diameters were smaller than in WT mice, and there were more fast oxidative fibers. Importantly, DEX failed to further reduce myotube diameters. Pik3r1 knockout also decreased basal protein synthesis rate (likely caused by lower 4E-BP1 phosphorylation at Thr37/Thr46) and curbed the ability of DEX to attenuate protein synthesis rate. Finally, the ability of DEX to inhibit eIF2α phosphorylation and insulin-induced 4E-BP1 phosphorylation was reduced in MKO mice. Taken together, these results demonstrate the role of Pik3r1 in glucocorticoid-mediated effects on glucose and protein metabolism in skeletal muscle.


Assuntos
Classe Ia de Fosfatidilinositol 3-Quinase/metabolismo , Glucocorticoides/farmacologia , Glucose/metabolismo , Resistência à Insulina , Músculo Estriado/efeitos dos fármacos , Músculo Estriado/metabolismo , Atrofia Muscular/metabolismo , Animais , Classe Ia de Fosfatidilinositol 3-Quinase/genética , Modelos Animais de Doenças , Insulina/metabolismo , Masculino , Camundongos , Camundongos Knockout , Fibras Musculares Esqueléticas/efeitos dos fármacos , Fibras Musculares Esqueléticas/metabolismo , Fibras Musculares Esqueléticas/patologia , Músculo Estriado/patologia , Atrofia Muscular/induzido quimicamente , Atrofia Muscular/patologia , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais
19.
Cancer ; 128(1): 112-121, 2022 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-34499355

RESUMO

BACKGROUND: Tobacco dependence, alcohol abuse, depression, distress, and other adverse patient-level influences are common in head and neck cancer (HNC) survivors. Their interrelatedness and precise burden in comparison with survivors of other cancers are poorly understood. METHODS: National Health Interview Survey data from 1997 to 2016 were pooled. The prevalence of adverse patient-level influences among HNC survivors and matched survivors of other cancers were compared using descriptive statistics. Multivariable logistic regressions evaluating covariate associations with the primary study outcomes were performed. These included 1) current cigarette smoking and/or heavy alcohol use (>14 drinks per week) and 2) high mental health burden (severe psychological distress [Kessler Index ≥ 13] and/or frequent depressive/anxiety symptoms). RESULTS: In all, 918 HNC survivors and 3672 matched survivors of other cancers were identified. Compared with other cancer survivors, more HNC survivors were current smokers and/or heavy drinkers (24.6% [95% CI, 21.5%-27.7%] vs 18.0% [95% CI, 16.6%-19.4%]) and exhibited a high mental health burden (18.6% [95% CI, 15.7%-21.5%] vs 13.0% [95% CI, 11.7%-14.3%]). In multivariable analyses, 1) a high mental health burden predicted for smoking and/or heavy drinking (odds ratio [OR], 1.4; 95% CI, 1.0-1.9), and 2) current cigarette smoking predicted for a high mental health burden (OR, 1.7; 95% CI, 1.2-2.3). Furthermore, nonpartnered marital status and uninsured/Medicaid insurance status were significantly associated with both cigarette smoking and/or heavy alcohol use (ORs, 1.9 [95% CI, 1.4-2.5] and 1.5 [95% CI, 1.0-2.1], respectively) and a high mental health burden (ORs, 1.4 [95% CI, 1.1 -1.8] and 3.0 [95% CI, 2.2-4.2], respectively). CONCLUSIONS: Stakeholders should allocate greater supportive care resources to HNC survivors. The interdependence of substance abuse, adverse mental health symptoms, and other adverse patient-level influences requires development of novel, multimodal survivorship care interventions.


Assuntos
Sobreviventes de Câncer , Neoplasias de Cabeça e Pescoço , Transtornos Relacionados ao Uso de Substâncias , Sobreviventes de Câncer/psicologia , Neoplasias de Cabeça e Pescoço/epidemiologia , Humanos , Saúde Mental , Inquéritos e Questionários
20.
Br J Cancer ; 126(10): 1450-1456, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35301436

RESUMO

BACKGROUND: Circulating tumour DNA (ctDNA) monitoring is a new technology that detects cancer DNA fragments in blood circulation. Regular monitoring with ctDNA has the potential to detect and treat cancer relapse earlier, but there is little evidence on patient acceptability. This study examines the views of patients with early-stage melanoma on the acceptability of the test and early treatment. METHODS: A qualitative cross-sectional design using one-to-one semi-structured telephone interviews was employed. Twenty-five patients diagnosed with early-stage melanoma (Stage IA-IIC) were asked for their views on ctDNA monitoring and early treatment for relapse. Interviews were analysed using reflexive thematic analysis. RESULTS: Two themes were generated: ctDNA monitoring would add service value where participants described regular ctDNA monitoring in follow-up care as more reassuring, more "scientific" than skin checks and preferable to scans. Test results provide opportunity and knowledge focuses on how participants wanted to know when to expect results to manage anxiety, with a positive result seen as an opportunity to receive treatment early. CONCLUSIONS: Participants were positive about ctDNA monitoring and early treatment and would welcome extra surveillance, as well as trust ctDNA tests. This indicates the feasibility of the wider implementation of ctDNA tests, which have applicability for many tumour types and disease stages.


Assuntos
DNA Tumoral Circulante , Melanoma , Biomarcadores Tumorais/genética , DNA Tumoral Circulante/genética , Estudos Transversais , Humanos , Melanoma/patologia , Recidiva Local de Neoplasia/patologia
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