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1.
Food Chem ; 453: 139688, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-38761722

RESUMO

The aim of this study was to evaluate the effect of freezing rates using direct (LF: Liquid nitrogen) and indirect (RF: Cryogenic refrigerator and UF: ultra-freezer) methods at temperatures of (-20, -80, and - 196 °C) on the enzymatic susceptibility with α-amylase for microparticles. In vitro digestibility parameters and technological properties were also analyzed. Lower rates resulted in larger ice crystals, damaging the starch structure. Hydrolysis was more pronounced at slower rates RF: 0.07 °C/min and UF: 0.14 °C/min, yielding maximum values of RDS: 37.63% and SDS: 59.32% for RF. Type A crystallinity remained unchanged, with only a noted increase in crystallinity of up to 6.50% for FR. Starch pastes were classified as pseudoplastic, with RF exhibiting superior textural parameters and apparent viscosity. (RF: 7.18 J g-1 and UF: 7.34 J g-1) also showed lower values of gelatinization enthalpy. Freezing techniques were viable in facilitating the diffusion of α-amylase and reducing RS by up to 81%.


Assuntos
Digestão , Congelamento , Amido , alfa-Amilases , Amido/química , Amido/metabolismo , alfa-Amilases/química , alfa-Amilases/metabolismo , Hidrólise , Viscosidade , Tamanho da Partícula
2.
Enferm. foco (Brasília) ; 15: 1-7, maio. 2024.
Artigo em Português | LILACS, BDENF - Enfermagem | ID: biblio-1553712

RESUMO

Objetivo: Analisar a prática do enfermeiro da atenção primária à saúde acerca da aferição da circunferência da panturrilha no rastreio da sarcopenia em idosos. Métodos: Estudo descritivo de abordagem qualitativa, realizado com enfermeiros que atuam na atenção primária à saúde. As entrevistas foram realizadas mediante utilização de roteiro semiestruturado, nos meses de maio a julho de 2019. Resultados: Participaram do estudo 24 enfermeiros com idade média de 31,4 anos, predominantemente do sexo feminino. O tempo de formação dos participantes variou de cinco meses a 15 anos e, a maioria dos entrevistados relatou possuir pós-graduação (n=18), principalmente nas áreas de saúde da família e urgência e emergência. A maioria não utilizava em sua prática diária a avaliação da circunferência da panturrilha e alguns a realizavam apenas em idosos hipertensos e diabéticos. Conclusão: Há uma escassa utilização da aferição da circunferência da panturrilha na prática clínica do enfermeiro, o que compromete o rastreio da sarcopenia, e consequentemente dificulta a realização de ações que minimizam as complicações desta doença. (AU)


Objective: To analyze the practice of nurses in primary health care about measuring the circumference of the calf in screening for sarcopenia in the elderly. Methods: Descriptive study with a qualitative approach, carried out with nurses who work in primary health care. The interviews were conducted using a semi-structured script, from May to July 2019. Results: 24 nurses with a mean age of 31.4 years, predominantly female, participated in the study. Participants' training time ranged from five months to 15 years, and most respondents reported having a postgraduate degree (n=18), mainly in the areas of family health and urgency and emergency. Most did not use calf circumference assessment in their daily practice and some performed it only in hypertensive and diabetic elderly. Conclusion: There is little use of calf circumference measurement in clinical nursing practice, which compromises sarcopenia screening and, consequently, makes it difficult to carry out actions that minimize the complications of this disease. (AU)


Objetivo: Analizar la práctica de enfermeras de atención primaria de salud sobre la medición de la circunferencia de la pantorrilla en el cribado de sarcopenia en el anciano. Métodos: Estudio descriptivo con abordaje cualitativo, realizado con enfermeras que laboran en la atención primaria de salud. Las entrevistas se realizaron mediante un guión semiestructurado, de mayo a julio de 2019. Resultados: Participaron del estudio 24 enfermeras con una edad promedio de 31,4 años, predominantemente mujeres. El tiempo de formación de los participantes osciló entre cinco meses y 15 años, y la mayoría de los encuestados informó tener un título de posgrado (n = 18), principalmente en las áreas de salud familiar y urgencia y emergencia. La mayoría no utilizó la evaluación de la circunferencia de la pantorrilla en su práctica diaria y algunos la realizaron solo en ancianos hipertensos y diabéticos. Conclusión: La medición del perímetro de la pantorrilla es escasa en la práctica clínica de enfermería, lo que compromete el cribado de sarcopenia y, en consecuencia, dificulta la realización de acciones que minimicen las complicaciones de esta enfermedad. (AU)


Assuntos
Pesos e Medidas , Idoso , Sarcopenia , Enfermagem Geriátrica
3.
Hemoglobin ; : 1-13, 2024 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-38663998

RESUMO

Sickle cell disease (SCD) comprises inherited red blood cell disorders due to a mutation in the ß-globin gene (c20A > T, pGlu6Val) and is characterized by the presence of abnormal hemoglobin, hemoglobin S, hemolysis, and vaso-occlusion. This mutation, either in a homozygous configuration or in compound states with other ß-globin mutations, leads to polymerization of hemoglobin S in deoxygenated conditions, causing modifications in red blood cell shape, particularly sickling. Vaso-occlusive crisis (VOC) is the hallmark of the disease, but other severe complications may arise from repeated bouts of VOCs. SCD is considered a global health problem, and its incidence has increased in some areas of the world, particularly the Americas and Africa. Management of the disease varies according to the region of the world, mainly due to local resources and socioeconomic status. This review aimed to describe more recent data on SCD regarding available treatment options, especially in Brazil. New treatment options are expected to be available to all patients, particularly crizanlizumab, which is already approved in the country.

4.
Microorganisms ; 12(3)2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38543475

RESUMO

Evidence shows that the gut microbiome in early life is an essential modulator of physiological processes related to healthy brain development, as well as mental and neurodegenerative disorders. Here, we conduct a systematic review of gut microbiome assessments on infants (both healthy and with conditions that affect brain development) during the first thousand days of life, associated with neurodevelopmental outcomes, with the aim of investigating key microbiome players and mechanisms through which the gut microbiome affects the brain. Bacteroides and Bifidobacterium were associated with non-social fear behavior, duration of orientation, cognitive and motricity development, and neurotypical brain development. Lachnospiraceae, Streptococcus, and Faecalibacterium showed variable levels of influence on behavior and brain development. Few studies described mechanistic insights related to NAD salvage, aspartate and asparagine biosynthesis, methanogenesis, pathways involved in bile acid transformation, short-chain fatty acids production, and microbial virulence genes. Further studies associating species to gene pathways and robustness in data analysis and integration are required to elucidate the functional mechanisms underlying the role of microbiome-gut-brain axis in early brain development.

6.
Front Oncol ; 14: 1308128, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38500657

RESUMO

Background: Non-germinomatous germ cell tumors (NGGCT) accounts for one third of intracranial GCT. While the germinoma group have an excellent overall survival, the standard of practice for children with NGGCT is still under evaluation. Aims: Describe the results of the of the Brazilian consortium protocol. Methods: Since 2013, 15 patients with a diagnosis of NGGCT by histopathology and/or serum/cerebrospinal fluid (CSF) tumor markers, ßHCG >200mlU/ml and/or positive alpha-fetoprotein were treated with neoadjuvant chemotherapy with carboplatin, cyclophosphamide and etoposide followed by ventricular radiotherapy (RTV) of 18Gy with boost (32Gy) to the primary site. Metastatic patients underwent craniospinal irradiation (CSI) and "slow responders" to the four initial cycles of CT, to autologous stem cell transplantation (ASCT) followed by CSI. Results: Mean age, 13.1 years. Thirteen males. Primary sites: pineal (n=12), suprasellar (n=2) and bifocal (n=1). Four patients were metastatic at diagnosis. Eight patients had CSF and/or serum alpha-fetoprotein levels > 1,000ng/ml. Tumor responses after chemotherapy demonstrated complete in six cases and partial in seven, with "second-look" surgery being performed in five cases, and two patients presenting viable lesions being referred to ASCT. The main toxicity observed was hematological grades 3/4. Two patients with metastatic disease, one with Down Syndrome and AFP > 1,000ng/ml and the other with choriocarcinoma and pulmonary metastases, developed progressive disease resulting in death, as well as two other patients without evidence of disease, due to endocrinological disorders. Event-free and overall survival at 2 and 5 years were 80% and 72.7%, respectively, with a mean follow-up of 48 months (range, 7-107). Conclusions: Despite the small number of patients, in our series, treatment with six cycles of chemotherapy and RTV with focal boost for localized disease (n=11) and ACST for identified slow responders (n=2) seem to be effective strategies contributing to the overall effort to improve outcomes of this group of patients.

7.
Int J Nanomedicine ; 19: 2655-2673, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38500680

RESUMO

Introduction: Immunotherapy has revolutionized cancer treatment by harnessing the immune system to enhance antitumor responses while minimizing off-target effects. Among the promising cancer-specific therapies, tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has attracted significant attention. Methods: Here, we developed an ionizable lipid nanoparticle (LNP) platform to deliver TRAIL mRNA (LNP-TRAIL) directly to the tumor microenvironment (TME) to induce tumor cell death. Our LNP-TRAIL was formulated via microfluidic mixing and the induction of tumor cell death was assessed in vitro. Next, we investigated the ability of LNP-TRAIL to inhibit colon cancer progression in vivo in combination with a TME normalization approach using Losartan (Los) or angiotensin 1-7 (Ang(1-7)) to reduce vascular compression and deposition of extracellular matrix in mice. Results: Our results demonstrated that LNP-TRAIL induced tumor cell death in vitro and effectively inhibited colon cancer progression in vivo, particularly when combined with TME normalization induced by treatment Los or Ang(1-7). In addition, potent tumor cell death as well as enhanced apoptosis and necrosis was found in the tumor tissue of a group treated with LNP-TRAIL combined with TME normalization. Discussion: Together, our data demonstrate the potential of the LNP to deliver TRAIL mRNA to the TME and to induce tumor cell death, especially when combined with TME normalization. Therefore, these findings provide important insights for the development of novel therapeutic strategies for the immunotherapy of solid tumors.


Assuntos
Neoplasias do Colo , Lipossomos , Nanopartículas , Microambiente Tumoral , Animais , Camundongos , Ligantes , Apoptose , Neoplasias do Colo/tratamento farmacológico , Neoplasias do Colo/genética , Fator de Necrose Tumoral alfa , Ligante Indutor de Apoptose Relacionado a TNF/metabolismo
8.
J Nurs Meas ; 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38538045

RESUMO

Background and Purpose: An absence of specific and precise instruments that measure the construct of intrapersonal and interpersonal communication in nursing was verified. This study aimed to construct and validate the intrapersonal and interpersonal communication scale in nursing. Methods: A psychometric study was conducted on a sample of 360 nurses from a hospital and university center in the central region of Portugal. Reliability was assessed through internal consistency and construct validity through exploratory and confirmatory factor analyses. Results: Four factors were decided upon: "self-efficacy," "empathy," "assertiveness," and "self-knowledge." Good internal consistency was obtained with Cronbach's alpha and adequate quality of adjustment indexes for the model. Conclusions: The key global indicators of the model's adjustment and reliability analysis express their quality for the Portuguese population.

9.
Hematol., Transfus. Cell Ther. (Impr.) ; 46(1): 67-71, Jan.-Mar. 2024.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1557881

RESUMO

Abstract To date, hydroxyurea is the only effective and safe drug that significantly reduces morbidity and mortality of individuals with Sickle cell disease. Twenty years of real-life experience has demonstrated that hydroxyurea reduces pain attacks, vaso-occlusive events, including acute chest syndrome, the number and duration of hospitalizations and the need for transfusion. The therapeutic success of hydroxyurea is directly linked to access to the drug, the dose used and adherence to treatment which, in part, is correlated to the availability of hydroxyurea. This consensus aims to reduce the number of mandatory exams needed to access the drug, prioritizing the requesting physician's report, without affecting patient safety.

10.
J Fam Nurs ; 30(2): 174-184, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38528681

RESUMO

Family members' experience of integrating chronic illnesses or chronic conditions into family life is valuable information for health care professionals, such as nurses, to understand, improve, and adjust the care provided to families of chronically ill patients. Furthermore, the assessment of the experience of integrating chronic illness into family life can support family nursing interventions and reduce suffering. This study aimed to adapt and psychometrically test a new Likert-type questionnaire on the experience of integrating pediatric chronic illness into family life (EICI-FLQ) in two European samples. A sample of 164 primary caregivers of children/adolescents with chronic illnesses/conditions in Iceland and another sample of 237 primary caregivers with children/adolescents with chronic illnesses/conditions in Portugal completed the online questionnaire. Exploratory factor analysis of the Icelandic sample yielded support for a one-factor solution with acceptable internal reliability (Cronbach's α = .866). Confirmatory factor analysis of the one-factor structure in the Portuguese sample indicated good model fit and similar internal reliability (Cronbach's α = .838). This instrument has good psychometric characteristics and is a promising tool for measuring the experience of integrating pediatric chronic illness into family life in clinical and research settings.


Assuntos
Cuidadores , Psicometria , Humanos , Masculino , Feminino , Doença Crônica/psicologia , Inquéritos e Questionários/normas , Criança , Adulto , Portugal , Reprodutibilidade dos Testes , Pessoa de Meia-Idade , Adolescente , Islândia , Cuidadores/psicologia , Análise Fatorial , Família/psicologia , Pré-Escolar , Enfermagem Familiar/normas
11.
Hematol Transfus Cell Ther ; 46(1): 67-71, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38326179

RESUMO

To date, hydroxyurea is the only effective and safe drug that significantly reduces morbidity and mortality of individuals with Sickle cell disease. Twenty years of real-life experience has demonstrated that hydroxyurea reduces pain attacks, vaso-occlusive events, including acute chest syndrome, the number and duration of hospitalizations and the need for transfusion. The therapeutic success of hydroxyurea is directly linked to access to the drug, the dose used and adherence to treatment which, in part, is correlated to the availability of hydroxyurea. This consensus aims to reduce the number of mandatory exams needed to access the drug, prioritizing the requesting physician's report, without affecting patient safety.

12.
J Fam Nurs ; : 10748407241226955, 2024 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-38284366

RESUMO

Illness beliefs have a role in the adaptation, coping, well-being, healing, and recovery in families of children/adolescents with chronic illness. The assessment of family illness beliefs can support family nursing interventions that address the suffering of family members when illness arises. The purpose of this study was to translate, cross-culturally adapt, and psychometrically test the Portuguese version of the Iceland-Family Illness Beliefs Questionnaire. A sample of 237 parents of children/adolescents who experienced chronic health conditions completed the online questionnaire. The original factor model was tested through confirmatory factorial analysis. The results showed satisfactory model fit indices (χ2/gl = 3.004; comparative fit index [CFI] = 0.90; root mean square error of approximation [RMSEA] = 0.092) and internal consistency (Cronbach's α = 0.74). The instrument showed good psychometric characteristics of validity and reliability, suggesting it may be useful in the assessment of illness beliefs in families experiencing a pediatric chronic illness.

13.
Nat Commun ; 15(1): 590, 2024 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-38238326

RESUMO

A safe and effective vaccine with long-term protection against SARS-CoV-2 variants of concern (VOCs) is a global health priority. Here, we develop lipid nanoparticles (LNPs) to provide safe and effective delivery of plasmid DNA (pDNA) and show protection against VOCs in female small animal models. Using a library of LNPs encapsulating unique barcoded DNA (b-DNA), we screen for b-DNA delivery after intramuscular administration. The top-performing LNPs are further tested for their capacity of pDNA uptake in antigen-presenting cells in vitro. The lead LNP is used to encapsulate pDNA encoding the HexaPro version of SARS-CoV-2 spike (LNP-HPS) and immunogenicity and protection is tested in vivo. LNP-HPS elicit a robust protective effect against SARS-CoV-2 Gamma (P.1), correlating with reduced lethality, decreased viral load in the lungs and reduced lung damage. LNP-HPS induce potent humoral and T cell responses against P.1, and generate high levels of neutralizing antibodies against P.1 and Omicron (B.1.1.529). Our findings indicate that the protective efficacy and immunogenicity elicited by LNP-HPS are comparable to those achieved by the approved COVID-19 vaccine from Biontech/Pfizer in animal models. Together, these findings suggest that LNP-HPS hold great promise as a vaccine candidate against VOCs.


Assuntos
COVID-19 , DNA de Forma B , Vacinas de DNA , Feminino , Animais , Humanos , SARS-CoV-2/genética , Vacinas de DNA/genética , Nanovacinas , Vacinas contra COVID-19 , COVID-19/prevenção & controle , DNA , Anticorpos Neutralizantes , Anticorpos Antivirais
14.
J Pediatr Nurs ; 75: e34-e41, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38216349

RESUMO

PURPOSE: This study aimed to describe the perception of parents of children/adolescents with chronic conditions of their quality of life and family functioning during the COVID-19 pandemic and explore how the COVID-19 pandemic affected family management of children/adolescents' chronic conditions. DESIGN AND METHODS: A total of 237 parents of children/adolescents with chronic conditions participated in this cross-sectional study. Data were collected through an online questionnaire using the Paediatric Quality of Life Inventory™ Family Impact Module and an open-ended question about the impact of the pandemic on the family management of the paediatric chronic condition. RESULTS: The Total Score of PedsQL™ FIM was slightly higher than the midpoint of the scale (M = 60.27; SD = 19.04), and the impact of the pandemic on the family's management of the chronic condition was perceived by 30% of parents as high or moderate. Statistically significant differences were found between parents who reported a high or moderate impact of the pandemic and those reporting little or no impact of the pandemic regarding parental quality of life and family functioning (t (233) = 8.13, p = .00, Cohen's d = 1.14). Two themes emerged from the analysis of the open-ended question: Impact on the child/adolescent and Impact on the family. CONCLUSIONS: Parents of children/adolescents with chronic conditions reported an average quality of life, and the COVID-19 pandemic significantly impacted the family management of chronic conditions. PRACTICE IMPLICATIONS: These results highlight the importance of developing interventions to support families in complex situations and contexts, targeting family functioning, family quality of life, and emotional management.


Assuntos
COVID-19 , Qualidade de Vida , Adolescente , Criança , Humanos , Qualidade de Vida/psicologia , Pandemias , Estudos Transversais , Reprodutibilidade dos Testes , COVID-19/epidemiologia , Pais/psicologia , Doença Crônica
15.
Food Res Int ; 177: 113877, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38225140

RESUMO

This study investigated the physical modifications by high hydrostatic pressure (HHP) at 600 MPa for 30 min/30 °C, annealing (AN) at 50 °C/24 h and the combination of both (HHP + AN and AN + HHP) applied to yellow bean starch to verify changes in morphology, X-ray diffraction, molecular order, thermal properties and pasting properties of native (NS) and modified starches. Morphological analysis showed loss of sphericity and increase in diameter with the appearance of pores on the surface after application of treatments. The AN starch showed lower values of syneresis, degree of double helix (DD), order (DO), and viscosity of the paste obtained by RVA. It exhibited a Vh-type classification with the appearance of the amylose-lipid complex. However, the gelatinization temperatures, as well as the enthalpy of gelatinization, were significantly higher. On the other hand, the starch treated with HHP showed a higher Setback (SB) value. The greatest modifications were found for the starches subjected to the combined treatments (AN + HHP) and (HHP + AN), where the order of the treatments was significant for the morpho-structural changes of yellow bean starch. According to the micrographs, the surface aspect was altered, with AN + HHP showing greater irregularities and flat yet irregular faces, as well as a larger granule diameter (147.05). The X-ray diffractogram showed a reduction in crystallinity from 28.14 % (NS) to 18.09 % (AN + HHP) and classified the starch as type "A". The double modification (HHP + AN and AN + HHP) reduced the gelatinization temperature and the enthalpy of gelatinization but had no effect on the bands of the FT-IR spectrum. There was only a reduction in the degree of order and the double helix. Finally, the treatment with AN + HHP is more effective as the gelatinization with AN facilitates the application of HHP. Both methods used are classified as physical (thermal and non-thermal), aiming to minimize environmental impacts and achieve faster and safer morpho-structural modification without leaving chemical residues in the products.


Assuntos
Amilose , Amido , Amido/química , Pressão Hidrostática , Espectroscopia de Infravermelho com Transformada de Fourier , Amilose/química , Temperatura
16.
Work ; 78(3): 559-567, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38189723

RESUMO

BACKGROUND: Sleep alterations are common in college students, particularly during the COVID-19 pandemic. Sociodemographic factors may predict these alterations in this population. OBJECTIVE: To identify the sociodemographic factors and health characteristics associated with the number of hours of sleep of college students during the COVID-19 pandemic. METHODS: This was a cross-sectional study carried out with 244 university students from a multicampi public university in the State of Bahia, Northeast Brazil. Data collection was performed online and participants answered a specific questionnaire to assess sleep hours, sociodemographic and health variables. RESULTS: Significant associations were observed between hours of sleep and older students (odds ratio adjusted -ORaj: 3.75; 95% Confidence Interval -CI: 1.81-7.75; p < 0.01), attending the final semesters (ORaj: 1.85; 95% CI: 1.05-3.25; p < 0.03), and who reported having some disease (ORaj: 2.18; 95% CI: 1.05-4.50; p < 0.03) with greater chances of getting less sleep. However, those who used tobacco (ORaj: 0.08; 95% CI: 0.01-0.45; p < 0.001) were likely to have more hours of sleep per night. CONCLUSION: Sleep restriction was common among participating college students, which has likely intensified due to the COVID-19 pandemic and its restrictions. This encourages specific public health actions, contemplating the health and hours of sleep of this population.


Assuntos
COVID-19 , Sono , Estudantes , Humanos , COVID-19/epidemiologia , Masculino , Estudos Transversais , Feminino , Estudantes/estatística & dados numéricos , Universidades/estatística & dados numéricos , Brasil/epidemiologia , Inquéritos e Questionários , Sono/fisiologia , Adulto , Pandemias , Adulto Jovem , SARS-CoV-2 , Fatores de Tempo , Adolescente
17.
J Fam Nurs ; : 10748407231223768, 2024 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-38240260

RESUMO

Clinical simulation can be a promising teaching strategy to help nurses develop behaviors that improve family care actions, promoting safe and high-quality care. The objective of this study was to build, validate, and test a simulation scenario in pediatric oncology family-focused care (FFC) following an initial diagnosis of cancer. It is a six-step methodological study based on the philosophy of Family-Centered Care (FCC), with a user-centered design. The evaluators established a Content Validity Index (CVI) > 0.8 for validation. Pilot testing included the Simulation Design Scale. The data were analyzed by descriptive statistics. A total of 35 experts participated in this study. All 19 items in the scenario were validated and considered relevant, in a single round, with the item-level CVI ranging between 0.8 and 1 and a scale-level CVI of 0.92. The high-fidelity developed and validated clinical simulation scenario is a consistent tool for the education of advanced practice nurses.

18.
Biomed Pharmacother ; 170: 115981, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38091634

RESUMO

CXCL12 is a key chemokine implicated in neuroinflammation, particularly during Zika virus (ZIKV) infection. Specifically, CXCL12 is upregulated in circulating cells of ZIKV infected patients. Here, we developed a lipid nanoparticle (LNP) to deliver siRNA in vivo to assess the impact of CXCL12 silencing in the context of ZIKV infection. The biodistribution of the LNP was assessed in vivo after intravenous injection using fluorescently tagged siRNA. Next, we investigated the ability of the developed LNP to silence CXCL12 in vivo and assessed the resulting effects in a murine model of ZIKV infection. The LNP encapsulating siRNA significantly inhibited CXCL12 levels in the spleen and induced microglial activation in the brain during ZIKV infection. This activation was evidenced by the enhanced expression of iNOS, TNF-α, and CD206 within microglial cells. Moreover, T cell subsets exhibited reduced secretion of IFN-É£ and IL-17 following LNP treatment. Despite no observable alteration in viral load, CXCL12 silencing led to a significant reduction in type-I interferon production compared to both ZIKV-infected and uninfected groups. Furthermore, we found grip strength deficits in the group treated with siRNA-LNP compared to the other groups. Our data suggest a correlation between the upregulated pro-inflammatory cytokines and the observed decrease in strength. Collectively, our results provide evidence that CXCL12 silencing exerts a regulatory influence on the immune response in the brain during ZIKV infection. In addition, the modulation of T-cell activation following CXCL12 silencing provides valuable insights into potential protective mechanisms against ZIKV, offering novel perspectives for combating this infection.


Assuntos
Infecção por Zika virus , Zika virus , Humanos , Camundongos , Animais , RNA Interferente Pequeno , Distribuição Tecidual , Encéfalo , Imunidade , Quimiocina CXCL12/genética
19.
Am J Med Genet C Semin Med Genet ; 196(1): e32075, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37929633

RESUMO

Our current understanding of adaptation in families of individuals with Down syndrome (DS) is based primarily on findings from studies focused on participants from a single country. Guided by the Resiliency Model of Family Stress, Adjustment, and Adaptation, the purpose of this cross-country investigation, which is part of a larger, mixed methods study, was twofold: (1) to compare family adaptation in 12 countries, and (2) to examine the relationships between family variables and family adaptation. The focus of this study is data collected in the 12 countries where at least 30 parents completed the survey. Descriptive statistics were generated, and mean family adaptation was modeled in terms of each predictor independently, controlling for an effect on covariates. A parsimonious composite model for mean family adaptation was adaptively generated. While there were cross-country differences, standardized family adaptation mean scores fell within the average range for all 12 countries. Key components of the guiding framework (i.e., family demands, family appraisal, family resources, and family problem-solving communication) were important predictors of family adaptation. More cross-country studies, as well as longitudinal studies, are needed to fully understand how culture and social determinants of health influence family adaptation in families of individuals with DS.


Assuntos
Adaptação Psicológica , Síndrome de Down , Humanos , Síndrome de Down/genética , Pais , Inquéritos e Questionários , Saúde da Família
20.
J Adv Nurs ; 80(5): 2091-2105, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38012856

RESUMO

AIM: To explore nurse-midwives' perceptions of safety culture in maternity hospitals. DESIGN: A descriptive phenomenological study was conducted using focus groups and reported following the Consolidated Criteria for Reporting Qualitative Research. METHODS: Data were obtained through two online focus group sessions in June 2022 with 13 nurse-midwives from two maternity hospitals in the central region of Portugal. The first focus group comprised 6 nurse-midwives, and the second comprised 7 nurse-midwives. Qualitative data were analysed using content analysis. FINDINGS: Two main themes emerged from the data: (i) barriers to promoting a safety culture; (ii) safety culture promotion strategies. The first theme is supported by four categories: ineffective communication, unproductive management, instability in teams and the problem of errors in care delivery. The second theme is supported by two categories: managers' commitment to safety and the promotion of effective communication. CONCLUSION: The study results show that the safety culture in maternity hospitals is compromised by ineffective communication, team instability, insufficient allocation of nurse-midwives, a prevailing punitive culture and underreporting of adverse events. These highlight the need for managers to commit to providing better working conditions, encourage training with the development of a fairer safety culture and encourage reporting and learning from mistakes. There is also a need to invest in team leaders who allow better conflict management and optimization of communication skills is essential. IMPACT: Disseminating these results will provide relevance to the safety culture problem, allowing greater awareness of nurse-midwives and managers about vulnerable areas, and lead to the implementation of effective changes for safe maternal and neonatal care. PATIENT OR PUBLIC CONTRIBUTION: There was no patient or public contribution as the study only concerned service providers, that is, nurse-midwives themselves.


Assuntos
Serviços de Saúde Materna , Tocologia , Enfermeiros Obstétricos , Recém-Nascido , Humanos , Gravidez , Feminino , Enfermeiros Obstétricos/educação , Maternidades , Pesquisa Qualitativa , Gestão da Segurança , Percepção , Tocologia/métodos
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