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1.
J Dairy Sci ; 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38825104

RESUMO

Adequate transfer of passive immunity (TPI) is a cornerstone for a proper health status of calves. In the literature, there is limited information on the prevalence of failure of TPI in dairy-beef crossbred calves and its impact on morbidity, mortality, and average daily gain (ADG) during the preweaning period. Therefore, this study aimed to evaluate the association between TPI with morbidity, mortality, and ADG in pre-weaned dairy-beef crossbred calves. A total of 1,055 newborn dairy-beef crossbred calves were enrolled upon arrival at a calf-raising facility in California from January to August 2021. Farm of origin, genetic breed group, sex, and body weight were recorded upon arrival. Blood was collected at 24 ± 1 h post-arrival to evaluate serum IgG concentration, serum total protein (TP), and packed cell volume. Morbidity (diarrhea and respiratory treatment records) and mortality were recorded daily until 60 d of life. Calves were grouped into 2 genetic breed groups: Holstein x Beef (Ho x Be, 49.6%) and Jersey × Beef crossbred calves (Je × Be, 50.4%). Descriptive statistics and Cox proportional hazard models were created to evaluate the association of TPI categories for serum IgG (TPI-IgG: poor: < 10.0 g/L, fair: 10.0 - 17.9 g/L, good: 18.0 - 24.9 g/L, and excellent: ≥ 25.0 g/L) and TP (TPI-TP: poor: < 5.1 g/dL, fair: 5.1 - 5.7 g/dL, good: 5.8 - 6.1 g/dL, and excellent: ≥ 6.2 g/dL), sex, and genetic breed group with morbidity and mortality. Additionally, a mixed linear regression was performed to evaluate the association of sex, genetic breed group, and TPI categories with ADG. Overall morbidity and mortality were 84.8% (n = 895) and 2.5% (n = 26). Calves classified as TPI-IgG excellent were associated with the lowest (43.2% less) hazard of being treated compared with TPI-IgG poor calves. For mortality, dairy-beef crossbred calves with TPI-IgG excellent were associated with a reduction of 82.0% in the hazard of dying compared with TPI-IgG poor. The TPI-IgG poor and TPI-IgG fair calves were associated with a decreased ADG of 101.0 and 98.8 g/d, respectively, in comparison with TPI-IgG good calves. Average daily gain of TPI-IgG good and TPI-IgG excellent calves were not different. In our study, dairy-beef crossbred calves enrolled may have endured challenging conditions that increased morbidity. This reinforces the importance of high IgG levels to decrease morbidity and mortality and maximize ADG in dairy-beef crossbred calves raising systems. Further research should evaluate the long-term effects of TPI categories on the health and performance of dairy-beef crossbred calves.

2.
PLoS One ; 19(5): e0289351, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38696386

RESUMO

In this study, an extensive analysis of microsatellite markers (Single Tandem Repeats-STRs) in Penaeus vannamei was conducted at an advanced level. The markers were thoroughly examined, characterized, and specific markers located within coding regions were identified. Out of a total of 306 STRs, 117 were classified as perfect markers based on their single repeat motif. Among these perfect markers, 62 were found to be associated with predicted coding genes (mRNA), which were involved in various functions such as binding, catalytic activity, ATP-dependent activity, transcription, structural and molecular regulation. To validate the accuracy of the findings, a sample of nine markers was subjected to in vitro testing, which confirmed the presence of polymorphisms within the population. These results suggest the existence of different protein isoforms within the population, indicating the potential of these markers for application in both population and phenotype-genotype association studies. This innovative approach opens up new possibilities for investigating the impact of genomic plasticity in populations of P. vannamei.


Assuntos
Repetições de Microssatélites , Penaeidae , Animais , Repetições de Microssatélites/genética , Penaeidae/genética , Genoma , Polimorfismo Genético , Fases de Leitura Aberta/genética
3.
Arq Gastroenterol ; 61: e23139, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38775582

RESUMO

BACKGROUND: Helicobacter pylori (H. pylori) is a gram-negative bacterium associated with the etiology of several gastrointestinal tract pathologies, and cagA-positive (cagA+) strains are found in populations with gastric ulcers and precancerous lesions, inducing pro-inflammatory responses. The development of neoplasms is related to microRNA (miRNA) dysregulation, indicating highly expressed miRNA-629. The article aims to correlate the expression level of miRNA-629 with the presence of H. pylori and the pathogenicity marker cagA. METHODS: 203 gastric biopsy samples were evaluated from individuals with normal gastric tissue (n=60), gastritis (n=96), and gastric cancer (n=47) of both genders and over 18 years old. The samples were subdivided according to the presence or absence of H. pylori, detected by polymerase chain reaction (PCR). RNA was extracted using a commercial kit and quantified. Complementary DNA (cDNA) was synthesized using commercial kits, and the relative expression was calculated using the 2-ΔΔCt method. RESULTS: Individuals infected with H. pylori are nine times more likely to develop gastric cancer. Cancer patients appeared to have decreased expression of miRNA-629; however, the presence of the bacterium would not influence this reduction. Individuals in the cancer group showed lower miRNA-629 expression when cagA+; however, in the control group, the expression was higher when cagA+. CONCLUSION: H. pylori is a factor involved in the etiology and progression of gastric diseases. Reduction in miRNA-629 expression in cancer patients occurs independent of the presence of the bacterium, but when the cagA pathogenicity marker is present, it induces changes in the gene expression of the respective miRNA.


Assuntos
Antígenos de Bactérias , Proteínas de Bactérias , Infecções por Helicobacter , Helicobacter pylori , MicroRNAs , Neoplasias Gástricas , Humanos , Helicobacter pylori/genética , Helicobacter pylori/patogenicidade , Neoplasias Gástricas/microbiologia , Neoplasias Gástricas/genética , Antígenos de Bactérias/genética , Proteínas de Bactérias/genética , MicroRNAs/genética , MicroRNAs/análise , Feminino , Masculino , Infecções por Helicobacter/microbiologia , Pessoa de Meia-Idade , Adulto , Idoso , Gastrite/microbiologia
4.
Biology (Basel) ; 13(5)2024 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-38785788

RESUMO

Cyanobacteria, photoautotrophic Gram-negative bacteria, play a crucial role in aquatic and terrestrial environments, contributing significantly to fundamental ecological processes and displaying potential for various biotechnological applications. It is, therefore, critical to identify viable strains for aquaculture and establish accurate culture parameters to ensure an extensive biomass supply for biotechnology purposes. This study aims to establish optimal laboratory batch culture conditions for Nostoc 136, sourced from Alga2O, Coimbra, Portugal. Preliminary investigations were conducted to identify the optimal culture parameters and to perform biomass analysis, including protein and pigment content. The highest growth was achieved with an initial inoculum concentration of 1 g.L-1, using modified BG11 supplemented with nitrogen, resulting in a Specific Growth Rate (SGR) of 0.232 ± 0.017 µ.day-1. When exposed to white, red, and blue LED light, the most favourable growth occurred under a combination of white and red LED light exhibiting an SGR of 0.142 ± 0.020 µ.day-1. The protein content was determined to be 10.80 ± 2.09%. Regarding the pigments, phycocyanin reached a concentration of 200.29 ± 30.07 µg.mL-1, phycoerythrin 148.29 ± 26.74 µg.mL-1, and allophycocyanin 10.69 ± 6.07 µg.mL-1. This study underscores the influence of light and nutrient supplementation on the growth of the Nostoc biomass.

5.
Front Cell Dev Biol ; 12: 1332894, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38711619

RESUMO

In nearly every species of insect, embryonic development takes place outside of the mother's body and is entirely dependent on the elements that the mother had previously stored within the eggs. It is well known that the follicle cells (FCs) synthesize the eggshell (chorion) components during the process of choriogenesis, the final step of oogenesis before fertilization. These cells have developed a specialization in the massive production of chorion proteins, which are essential for the protection and survival of the embryo. Here, we investigate the function of Sec16, a protein crucial for the endoplasmic reticulum (ER) to Golgi traffic, in the oocyte development in the insect Rhodnius prolixus. We discovered that Sec16 is strongly expressed in vitellogenic females' ovaries, particularly in the choriogenic oocyte and it is mainly associated with the FCs. Silencing of Sec16 by RNAi caused a sharp decline in oviposition rates, F1 viability, and longevity in adult females. In the FCs, genes involved in the unfolded protein response (UPR), the ubiquitin-proteasome system (UPS), and autophagy were massively upregulated, whereas the mRNAs of Rp30 and Rp45-which code for the two major chorion proteins - were downregulated as a result of Sec16 silencing, indicating general proteostasis disturbance. As a result, the outer surface ultrastructure of Sec16-silenced chorions was altered, with decreased thickness, dityrosine crosslinking, sulfur signals, and lower amounts of the chorion protein Rp30. These findings collectively demonstrate the critical role Sec16 plays in the proper functioning of the FCs, which impacts the synthesis and deposition of particular components of the chorion as well as the overall reproduction of this vector.

6.
bioRxiv ; 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38798376

RESUMO

Replenishment of pancreatic beta cells is a key to the cure for diabetes. Beta cells regeneration is achieved predominantly by self-replication especially in rodents, but it was also shown that pancreatic duct cells can transdifferentiate into beta cells. How pancreatic duct cells undergo transdifferentiated and whether we could manipulate the transdifferentiation to replenish beta cell mass is not well understood. Using a genome-wide CRISPR screen, we discovered that loss-of-function of ALDH3B2 is sufficient to transdifferentiate human pancreatic duct cells into functional beta-like cells. The transdifferentiated cells have significant increase in beta cell marker genes expression, secrete insulin in response to glucose, and reduce blood glucose when transplanted into diabetic mice. Our study identifies a novel gene that could potentially be targeted in human pancreatic duct cells to replenish beta cell mass for diabetes therapy.

7.
J Pediatr Urol ; 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38609778

RESUMO

BACKGROUND: Prune belly syndrome (PBS) is characterized by the triad of abdominal flaccidity, bilateral undescended testicles and genitourinary tract anomalies. A variable spectrum of abdominal wall laxity is observed in PBS. We present the first case of a novel technique using a minimally invasive abdominoplasty to specifically address patients with localized abdominal wall weakness in PBS. CASE PRESENTATION: A two-years-old child with PBS presented with recurrent febrile urinary tract infections. Ultrasonography demonstrated a dysplastic right kidney associated with significant ipsilateral ureterohydronephrosis. Voiding urethrocystogram did not show vesicoureteral reflux and DMSA scan depicted a non-functioning right kidney. During laparoscopic right nephroureterectomy and first stage Fowler-Stephens bilateral orchiopexies, a significant right-sided lateral abdominal wall bulging was observed. A minimally invasive laparoscopic abdominoplasty was performed with a one-way running suture using an unabsorbable 2.0 prolene approximating the edges of the musculofascial defect. While undergoing the second-stage Fowler-Stephens orchiopexy, no bulging was observed. CONCLUSION: A minimally invasive abdominoplasty to improve abdominal wall lateral bulging in PBS was feasible and presented good cosmetic result. We anticipate that this technique can be applied for children with PBS with primary lateral abdominal wall bulging, employing one or more suture lines depending on the fascial defect size.

8.
Rev. Psicol., Divers. Saúde ; 13(1)abr. 2024. tab
Artigo em Espanhol, Português | LILACS | ID: biblio-1551269

RESUMO

INTRODUÇÃO: A percepção e satisfação corporal têm sido amplamente estudadas em diversos públicos, principalmente em estudantes universitários; porém, existem poucas investigações com vegetarianos, sendo assim, torna-se necessário avaliar se o padrão alimentar vegetariano está relacionado com os fenômenos inerentes à imagem corporal. OBJETIVO: Avaliar a percepção e a satisfação corporal entre estudantes universitários vegetarianos. MÉTODO: Trata-se de um estudo transversal com 123 participantes, no qual foram aplicados o Questionário de Imagem Corporal - BSQ (Body Shape Questionnaire) e a Escala de Silhuetas de Stunkard. RESULTADOS: Os dados mostraram que 86,2% dos participantes eram eutróficos (IMC=22,4±3,3), sendo o score obtido no BSQ foi de 84,6 pontos (±36,0) correspondente à leve insatisfação com a imagem corporal. Cerca de 82,1% dos estudantes se mostravam insatisfeitos com a silhueta, dentre estes, 61,4% desejavam diminuí-la. CONCLUSÃO: O padrão alimentar (ovolactovegetariano, lactovegetariano, vegetariano estrito e vegano) não se relacionou com a insatisfação corporal, mas sim o desejo de ter silhuetas magras que são valorizadas pelo padrão de beleza vigente.


INTRODUCTION: For Body perception and satisfaction have been widely studied among different publics, especially among college students; however, there are few investigations with vegetarians. Therefore, it is necessary to evaluate whether the vegetarian eating pattern is related to the phenomena inherent to body image. OBJECTIVE: To evaluate body perception and body satisfaction among vegetarian college students. METHOD: This is a cross-sectional study with 123 participants, in which the Body Image Questionnaire (BSQ) and the Stunkard Silhouette Scale were applied. RESULTS: The data showed that 86.2% of the participants were eutrophic (BMI=22.4±3.3), and the score obtained in the BSQ was 84.6 points (±36.0) corresponding to a mild dissatisfaction with body image. About 82.1% of the students were dissatisfied with their silhouette, and 61.4% of them wanted to reduce it. CONCLUSION: Dietary patterns (ovolactovegetarian, lactovegetarian, strict vegetarian, and vegan) were not related to body dissatisfaction, but rather the desire to have thin silhouettes that are valued by the prevailing beauty standard.


INTRODUCCIÓN: La percepción y satisfacción corporal han sido ampliamente estudiadas entre diferentes públicos, especialmente entre estudiantes universitarios; sin embargo, existen pocos estudios sobre vegetarianos, por lo que es necesario evaluar si el patrón alimentario vegetariano está relacionado con los fenómenos inherentes a la imagen corporal. OBJETIVO: Evaluar la percepción corporal y la satisfacción corporal entre estudiantes universitarios vegetarianos. MÉTODO: Se trata de un estudio transversal con 123 participantes, en el que se aplicaron el Cuestionario de Imagen Corporal - BSQ (Body Shape Questionnaire) y la Escala de Siluetas de Stunkard. RESULTADOS: Los datos mostraron que el 86,2% de los participantes eran eutróficos (IMC=22,4±3,3), y la puntuación obtenida en el BSQ fue de 84,6 puntos (±36,0) correspondiente a una insatisfacción leve con la imagen corporal. Alrededor del 82,1% de los estudiantes estaban insatisfechos con su silueta, entre ellos, el 61,4% deseaba reducirla. CONCLUSIÓN: El patrón alimentario (ovolactovegetariano, lactovegetariano, vegetariano estricto y vegano) no estaba relacionado con la insatisfacción corporal, sino con el deseo de tener siluetas delgadas que son valoradas por el estándar de belleza vigente.


Assuntos
Imagem Corporal , Estudantes , Vegetarianos
9.
J Proteomics ; 299: 105156, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38467267

RESUMO

Plants exhibit phenotypic plasticity in response to environmental variations, which can lead to stable genetic and physiological adaptations if exposure to specific conditions is prolonged. Myrsine coriacea demonstrates this through its ability to thrive in diverse environments. The objective of the article is to investigate potential differences in protein accumulation and physiological responses of M. coriacea by cultivating plants from seeds collected from four populations at different altitudes in a common garden experiment. Additionally, we aim to evaluate whether these differences exhibit genetic fixation. Through integrated physiological and proteomic analyses, we identified 170 differentially accumulated proteins and observed significant physiological differences among the populations. The high-altitude population (POP1) exhibited a unique proteomic profile with significant down-regulation of proteins involved in carbon fixation and energy metabolism, suggesting a potential reduction in photosynthetic efficiency. Physiological analyses showed lower leaf nitrogen content, net CO2 assimilation rate, specific leaf area, and relative growth rate in stem height for POP1, alongside higher leaf carbon isotopic composition (δ13C) and leaf carbon (C) content. These findings provide insight into the complex interplay between proteomic and physiological adaptations in M. coriacea and underscore the importance of local adaptations. SIGNIFICANCE: We investigate the adaptive responses of M. coriacea, a shrub with a broad phenotypic range, by cultivating plants from seeds collected at four different altitudes in a common garden experiment. These findings provide insight into the complex interplay between proteomic and physiological adaptations in M. coriacea and underscore the importance of local adaptations in the face of climate change. This study contributes to advancing our understanding of the influence of altitude-specific selection pressures on the molecular biology and physiology of plants in natural populations. Our findings provide valuable insights that enhance our ability to predict and comprehend how plants respond to climate change.


Assuntos
Altitude , Myrsine , Proteômica , Adaptação Fisiológica , Plantas , Carbono
10.
J Neurochem ; 168(6): 977-994, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38390627

RESUMO

Alzheimer's disease (AD) is the most common type and accounts for 60%-70% of the reported cases of dementia. MicroRNAs (miRNAs) are small non-coding RNAs that play a crucial role in gene expression regulation. Although the diagnosis of AD is primarily clinical, several miRNAs have been associated with AD and considered as potential markers for diagnosis and progression of AD. We sought to match AD-related miRNAs in cerebrospinal fluid (CSF) found in the GeoDataSets, evaluated by machine learning, with miRNAs listed in a systematic review, and a pathway analysis. Using machine learning approaches, we identified most differentially expressed miRNAs in Gene Expression Omnibus (GEO), which were validated by the systematic review, using the acronym PECO-Population (P): Patients with AD, Exposure (E): expression of miRNAs, Comparison (C): Healthy individuals, and Objective (O): miRNAs differentially expressed in CSF. Additionally, pathway enrichment analysis was performed to identify the main pathways involving at least four miRNAs selected. Four miRNAs were identified for differentiating between patients with and without AD in machine learning combined to systematic review, and followed the pathways analysis: miRNA-30a-3p, miRNA-193a-5p, miRNA-143-3p, miRNA-145-5p. The pathways epidermal growth factor, MAPK, TGF-beta and ATM-dependent DNA damage response, were regulated by these miRNAs, but only the MAPK pathway presented higher relevance after a randomic pathway analysis. These findings have the potential to assist in the development of diagnostic tests for AD using miRNAs as biomarkers, as well as provide understanding of the relationship between different pathophysiological mechanisms of AD.


Assuntos
Doença de Alzheimer , Mineração de Dados , Aprendizado de Máquina , MicroRNAs , Doença de Alzheimer/líquido cefalorraquidiano , Doença de Alzheimer/genética , Doença de Alzheimer/diagnóstico , Humanos , MicroRNAs/líquido cefalorraquidiano , MicroRNAs/genética , Biomarcadores/líquido cefalorraquidiano
11.
Biomedicines ; 12(2)2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38398024

RESUMO

The molecular processes linked to the development and progression of Crohn's disease (CD) and ulcerative colitis (UC) are not completely understood. MicroRNAs (miRNAs) regulate gene expression and are indicated as diagnostic, prognostic, and predictive biomarkers in chronic degenerative diseases. Our objectives included the identification of global miRNA expression in CD and UC, as well as miRNA target genes, miRNA-mRNA interaction networks, and biological functions associated with these different forms of inflammatory bowel disease (IBD). METHODS: By performing a comprehensive meta-analysis, we integrated miRNA expression data from nine studies in IBD. We obtained detailed information on significantly deregulated miRNAs (fold change, FC ≥ 2 and p < 0.05), sample type and number, and platform applied for analysis in the training and validation sets. Further bioinformatic analyses were performed to identify miRNA target genes, by using the microRNA Data Integration Portal tool. We also sought to identify statistically enriched pathways of genes regulated by miRNAs using ToppGene Suite. Additional analyses were performed to filter for genes expressed in intestinal tissue using the European Bioinformatics Institute (EBI) database. RESULTS: Our findings showed the upregulation of 15 miRNAs in CD and 33 in UC. Conversely, six miRNAs were downregulated in CD, while seven were downregulated in UC. These results indicate a greater deregulation of miRNAs in UC compared to CD. Of note, miRNA target genes were enriched for immune system regulation pathways. Among significantly deregulated miRNAs with a higher number of miRNA-target gene interactions, we identified miR-199a-5p and miR-362-3p altered in CD, while among UC case patients, miRNA-target gene interactions were higher for miR-155-5p. CONCLUSIONS: The identified miRNAs play roles in regulating genes associated with immune system regulation and inflammation in IBD. Such miRNAs and their target genes have the potential to serve as clinically relevant biomarkers. These findings hold promise for enhancing the accuracy of diagnoses and facilitating the development of personalized treatment strategies for individuals with various forms of IBD.

12.
Expert Rev Anti Infect Ther ; 22(1-3): 5-17, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38224018

RESUMO

INTRODUCTION: Severe acute hepatitis (SAH) is defined by a severe inflammation of hepatocytes in the liver parenchyma which can lead to an acute liver failure, a clinical condition with high mortality rate that can be triggered by several factors but is usually associated to hepatotropic viruses' infection. In 2022, cases of children with severe acute hepatitis of unknown origin hospitalized in Glasgow, Scotland, were reported. Possible causes of this condition include, but are not limited to, undiagnosed viral (and non-viral) infections, autoimmune hepatitis, drug and/or chemical toxicity, mitochondrial chain respiratory and metabolic disorders. AREAS COVERED: Herpesviruses can cause severe acute hepatitis, but little is known about the role and the mechanisms of herpesviruses as a causative agent of this type of hepatitis. We review the role of herpesviruses as causative agent of SAH in children and other possible mechanisms involved in this disease. EXPERT OPINION: Differential diagnosis for herpesvirus in SAH should be implemented in all settings. Alternative fluids, such as saliva and dried blood, could be used in the diagnosis to overwhelm the availability of biological specimens at sufficient volume. In the future, genetic studies could also be added to increase the knowledge about severe acute hepatitis in children.


Assuntos
Hepatite , Herpesviridae , Viroses , Criança , Humanos , Diagnóstico Diferencial , Doença Aguda
13.
Online braz. j. nurs. (Online) ; 23(supl.1): e20246684, 08 jan 2024. ilus
Artigo em Inglês, Português | LILACS-Express | LILACS | ID: biblio-1531097

RESUMO

OBJETIVO: Verificar qual o tratamento mais indicado para a prevenção e redução dos sinais e sintomas de abstinência em crianças criticamente doentes por meio de uma revisão sistemática da literatura mundial. MÉTODO: A revisão sistemática será conduzida conforme a metodologia PRISMA e Cochrane, com registro no PROSPERO, sob o número de ID CRD42021274670, nas respectivas bases de dados PubMed, LILACS, Embase, Web of Science, Cochrane, CINAHL, Cochrane Database Systematic Review e CENTRAL. As buscas serão realizadas por dois avaliadores independentes, um terceiro realizará o intermédio se necessário. Os dados serão inseridos no programa de software Zotero que irá excluir os artigos duplicados, após o material selecionado será transferido para planilha Excel em instrumento próprio. Os estudos serão classificados quanto ao seu nível de evidência, viés e fator de risco. Os resultados serão analisados e tabulados e discutidos a fim de melhor compreensão dos resultados. Se possível, serão realizadas meta-análises para os resultados agregados.


OBEJECTIVE: To verify the most appropriate treatment for the prevention and reduction of the signs and symptoms of abstinence in critically ill children through a systematic review of the world literature. METHOD: The systematic review will be conducted according to the PRISMA and Cochrane methodology, with registration at PROSPERO, under the ID number CRD42021274670, in the respective databases, PUBMed, LILACS, Embase, Web of Science, Cochrane, CINAHL, Cochrane Database Systematic Review, and CENTRAL, searches will be carried out by two independent evaluators, and a third party will perform the intermediate if necessary. The data will be entered into the Zotero software program that will delete duplicate articles after the selected material is transferred to an Excel spreadsheet on its instrument. The studies will be classified according to their level of evidence, bias, and risk factors. The results will be analyzed, tabulated, and discussed to understand the results better. If possible, meta-analyzes will be carried out for the aggregated results.

14.
Parasit Vectors ; 17(1): 12, 2024 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-38184590

RESUMO

BACKGROUND: The high prevalence of metabolic syndrome in low- and middle-income countries is linked to an increase in Western diet consumption, characterized by a high intake of processed foods, which impacts the levels of blood sugar and lipids, hormones, and cytokines. Hematophagous insect vectors, such as the yellow fever mosquito Aedes aegypti, rely on blood meals for reproduction and development and are therefore exposed to the components of blood plasma. However, the impact of the alteration of blood composition due to malnutrition and metabolic conditions on mosquito biology remains understudied. METHODS: In this study, we investigated the impact of whole-blood alterations resulting from a Western-type diet on the biology of Ae. aegypti. We kept C57Bl6/J mice on a high-fat, high-sucrose (HFHS) diet for 20 weeks and followed biological parameters, including plasma insulin and lipid levels, insulin tolerance, and weight gain, to validate the development of metabolic syndrome. We further allowed Ae. aegypti mosquitoes to feed on mice and tracked how altered host blood composition modulated parameters of vector capacity. RESULTS: Our findings identified that HFHS-fed mice resulted in reduced mosquito longevity and increased fecundity upon mosquito feeding, which correlated with alteration in the gene expression profile of nutrient sensing and physiological and metabolic markers as studied up to several days after blood ingestion. CONCLUSIONS: Our study provides new insights into the overall effect of alterations of blood components on mosquito biology and its implications for the transmission of infectious diseases in conditions where the frequency of Western diet-induced metabolic syndromes is becoming more frequent. These findings highlight the importance of addressing metabolic health to further understand the spread of mosquito-borne illnesses in endemic areas.


Assuntos
Aedes , Insulinas , Síndrome Metabólica , Doenças dos Roedores , Animais , Camundongos , Longevidade , Aedes/genética , Dieta Ocidental , Mosquitos Vetores/genética , Fertilidade , Vertebrados , Expressão Gênica
15.
BrJP ; 7: e20240007, 2024. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1533972

RESUMO

ABSTRACT BACKGROUND AND OBJECTIVES: Pain is the most frequently reported symptom in the immediate puerperium. The aim of this study was to quantify pain levels and sociodemographic, obstetric, and care characteristics associated with severe pain and inadequate analgesia according to the mode of delivery. METHODS: Observational, descriptive, cross-sectional study conducted between October and December 2020, with a sample of 229 postpartum women considered eligible (baby born alive, weighing > 500 g and/or gestational age > 22 weeks) to answer the study questionnaire. RESULTS: The mean reported pain was 5.34 by Visual Analogue Scale (VAS) and there was a difference (p<0.001) between modes of delivery. Cesarean section was associated with severe pain (p=0.006) and pain above eight on the VAS (p=0.02). Vaginal delivery was associated with the perception of inadequate analgesia (p=0.04). Severe pain reported was associated with the admission of the baby to the ICU (p=0.01) and cases of postpartum hemorrhage (p=0.002). Among women who gave birth vaginally, there was an association between severe pain and instrumental delivery (p=0.05). Reported severe pain was associated with difficulties in self-care (p<0.001) and care of the newborn (p= 0.02), sensation of weakness (p<0.001), and fainting (p=0.002). The perception of inadequate analgesia was associated with vaginal birth (p=0.04) end non-white skin color (p=0,03). CONCLUSION: The average reported pain was moderate. Intense pain and the perception of inadequate analgesia were associated with instrumental delivery, newborns being referred to the NICU, postpartum hemorrhage, and non-white skin color.


RESUMO JUSTIFICATIVA E OBJETIVOS: A dor é o sintoma mais frequentemente relatado no puerpério imediato. O objetivo deste estudo foi quantificar os níveis de dor e as características sociodemográficas, obstétricas e da assistência associadas à dor intensa e à percepção de analgesia inadequada segundo a via de nascimento. MÉTODOS: Estudo observacional, descritivo, transversal, conduzido entre outubro e dezembro de 2020, com uma amostra de 229 puérperas consideradas elegíveis (nativivos com peso > 500g e/ou idade gestacional > 22 semanas) para responder ao questionário do estudo. RESULTADOS: A média de dor relatada foi 5,3 pela Escala Analógica Visual (EAV) e houve diferença (p<0,001) entre as vias de nascimento. A cesariana apresentou associação com dor intensa referida (p=0,006) e dor acima de oito pela EAV (p=0,02). O parto vaginal obteve associação com percepção de analgesia inadequada (p=0,04). Entre as mulheres que referiram dor intensa, houve associação com recém-nascido encaminhado à unidade de terapia intensiva neonatal (UTIN) (p=0,01) e nos casos de hemorragia pós-parto (p=0,002). Entre as mulheres que tiveram parto vaginal, também houve associação entre dor intensa e o parto instrumental (p=0,05). Dor intensa referida teve associação com dificuldades para o autocuidado (p<0,001) e do recém-nascido (p=0,02), sensação de fraqueza (p<0,001) e de desmaio (p= 0,002). A percepção de analgesia inadequada esteve associada a parto vaginal (p=0,04) e cor da pele não branca (p=0,03). CONCLUSÃO: A média de dor relatada foi moderada. Dor intensa e percepção de analgesia inadequada estiveram associadas com parto instrumental, recém-nascido encaminhado à UTIN, hemorragia pós-parto e cor de pele não branca.

16.
Rev. Pesqui. (Univ. Fed. Estado Rio J., Online) ; 16: e11272, jan.-dez. 2024. tab
Artigo em Inglês, Português | LILACS, BDENF - Enfermagem | ID: biblio-1524783

RESUMO

Objetivo: analisar um instrumento orientador para a Simulação Realística em Saúde utilizado por uma Instituição de Ensino Superior. Método: estudo descritivo, qualitativo com participação de 23 profissionais com Graduação na área da saúde e experiência em simulação realística. A coleta de dados, via questionário on-line, ocorreu no período de março a junho de 2020. Utilizou-se a análise de conteúdo temático-categorial. Resultados: o instrumento contempla as etapas necessárias para o cotidiano do ensino em simulação. A categoria "Itens imprescindíveis para o planejamento da simulação" engloba.: preparo do cenário simulado; atuação dos docentes/facilitadores no briefing e no desenvolvimento do cenário simulado; atuação dos docentes/facilitadores no debriefing; e avaliação da simulação. Conclusão: o desenvolvimento desta pesquisa possibilitou adequação das dimensões do Isimula favorecendo clareza às etapas necessárias à simulação e contribui para apoiar docentes/facilitadores no planejamento, desenvolvimento e avaliação da simulação, em diferentes contextos de atenção à saúde.


Objective: to analyze a guiding instrument for Realistic Simulation in Health used by a Higher Education Institution. Method: this was a descriptive, qualitative study involving 23 professionals with a degree in healthcare and experience in realistic simulation. Data was collected via an online questionnaire between March and June 2020. Thematic-categorical content analysis was used. Results: the instrument covers the necessary steps for day-to-day simulation teaching. The category "Essential items for planning the simulation" includes: preparing the simulated scenario; the role of teachers/facilitators in briefing and developing the simulated scenario; the role of teachers/facilitators in debriefing; and evaluating the simulation. Conclusion: the development of this research enabled the dimensions of Isimula to be adapted, favoring clarity in the stages necessary for simulation and helping to support teachers/facilitators in the planning, development and evaluation of simulation in different healthcare contexts.


Objetivos:analizar un instrumento de orientación para la Simulación Realista en Salud utilizado por una Institución de Enseñanza Superior. Método: estudio descriptivo y cualitativo en el que participaron 23 profesionales con titulación sanitaria y experiencia en simulación realista. Los datos se recogieron a través de un cuestionario online entre marzo y junio de 2020. Se utilizó análisis de contenido temático-categorial. Resultados: el instrumento recoge los pasos necesarios para el día a día de la enseñanza de la simulación. La categoría "Elementos esenciales para la planificación de la simulación" incluye: la preparación del escenario simulado; el papel de los profesores/facilitadores en la información y el desarrollo del escenario simulado; el papel de los profesores/facilitadores en el debriefing; y la evaluación de la simulación. Conclusión: el desarrollo de esta investigación permitió adaptar las dimensiones de Isimula, favoreciendo la claridad en las etapas necesarias para la simulación y ayudando a apoyar a los profesores/facilitadores en la planificación, desarrollo y evaluación de la simulación en diferentes contextos sanitarios.


Assuntos
Humanos , Masculino , Feminino , Educação em Enfermagem , Treinamento por Simulação/métodos , Universidades , Docentes de Enfermagem
17.
Rev. biol. trop ; 71(1)dic. 2023.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1449502

RESUMO

Introduction: Morphological parameters of flowering are fundamental in the reproductive process of plants, but this subject is poorly explored in the cashew tree Anacardium occidentale. Objective: To determine the influence of the flowering and harvest period on floral parameters, and to identify association with hermaphrodite flowers in the dwarf cashew. Methods: For the 2018 and 2019 harvests in 120 samples we measured number of male/hermaphrodite/abnormal flowers; panicle biomass, length, maximum width, and ramifications at 30, 45 and 60 days for 360 samples in total. Results: The harvest effect was not significant. Panicle length and width (at 30 days), had the greatest contributions to the production of hermaphrodite flowers. The presence of male flowers (at 45 days), and the panicle length and number of primary branches (at 60 days) were the main factors at their respective periods. Conclusions: The emission of hermaphrodite flowers responds negatively to male flowers. Variations in flowering compromise the production of hermaphrodite flowers and the flowering structure.


Introducción: Parámetros morfológicos de la floración son fundamentales en el proceso reproductivo de las plantas, sin embargo, el tema es poco explorado en el árbol de marañón Anacardium occidentale. Objetivo: Determinar la influencia de la floración y periodos de cosecha sobre parámetros florales, e identificar asociaciones con flores hermafroditas en el marañón enano. Métodos: Para las cosechas de 2018 y 2019 en 120 muestras, medimos el número de flores masculinas/hermafroditas/anormales; biomasa de panícula, largo, ancho máximo, y ramificaciones a los 30, 45 y 60 días, un total de 360 muestras. Resultados: El efecto de la cosecha fue insignificante. Longitud y ancho de la panícula (a los 30 días), tuvo la mayor contribución a la producción de flores hermafroditas. La presencia de flores masculinas (a los 45 días), y el largo de panícula y número de ramas primarias (a los 60 días) fueron los principales factores en sus periodos respectivos. Conclusiones: La emisión de flores hermafroditas responde negativamente a flores masculinas. Variaciones en la floración afecta la producción de flores hermafroditas y estructura de floración.

18.
Rev. latinoam. enferm. (Online) ; 31: e3857, ene.-dic. 2023. tab, graf
Artigo em Espanhol | LILACS, BDENF - Enfermagem | ID: biblio-1431824

RESUMO

Objetivo: elaborar, validar y evaluar un video educativo sobre estrategias de comunicación enfermero-paciente para estudiantes de la carrera de enfermería. Método: se trata de un estudio metodológico, con diseño longitudinal y análisis cuantitativo. El público objetivo cumplió las etapas de preproducción, producción, postproducción y evaluación del video. Resultados: cinco enfermeras evaluaron el storyboard del video y consideraron que la comprensión del tema, los tópicos abordados y el lenguaje utilizado eran apropiados y relevantes para el tema. Otras cinco enfermeras consideraron que la calidad de la técnica audiovisual utilizada, el ambiente simulado, la caracterización de los personajes y el desarrollo de las estrategias de comunicación enfermero-paciente estaban presentes y eran adecuados. La versión final del video fue evaluada por nueve estudiantes de enfermería que tuvieron un nivel de comprensión de los ítems igual o superior al 96%. El video presenta las siguientes estrategias: Estrategias Generales de Comunicación, Comunicación Intercultural, NURSE, Tell me more, Ask-Tell-Ask, Comunicación Terapéutica y Comunicación de Malas Noticias. Conclusión: este estudio describe la creación de un video, la validación que realizaron del mismo los expertos y la evaluación del público objetivo, quienes consideraron que es un recurso educativo importante para el proceso de enseñanza-aprendizaje de las estrategias de comunicación. Los jueces y el público objetivo consideraron que el video era un instrumento válido para enseñar las estrategias de comunicación enfermero-paciente.


Objective: to create, validate and evaluate an educational video on nurse-patient communication strategies for undergraduate Nursing students. Method: this is a methodological study with a longitudinal design and quantitative analysis. The following stages were conducted: pre-production, production, post-production and evaluation of the video by the target population. Results: five female nurses evaluated the video storyboard and indicated understanding of the subject matter, the topics addressed and the language used as adequate and pertinent to the theme. Another five female nurses considered the following as present and desirable elements: quality of the audiovisual technique employed, simulated environment, characterization of the characters, and development of the nurse-patient communication strategies The final version of the video was evaluated by nine Nursing students that presented a level of item understanding of at least 96%. The video presents the following strategies: General communication strategies, Intercultural Communication, NURSE, Tell me more, Ask-Tell-Ask, Therapeutic Communication and Communicating Bad News. Conclusion: this study portrays the creation of a video, its validation by experts and its evaluation by the target population, which indicated it as a relevant educational resource for the teaching-learning process regarding communication strategies. Both the evaluators and the target population considered that the video is a valid instrument to teach content about the nurse-patient communication strategies.


Objetivo: construir, validar e avaliar um vídeo educativo sobre estratégias de comunicação enfermeiro-paciente para estudantes da graduação em enfermagem. Método: trata-se de um estudo metodológico, com delineamento longitudinal e análise quantitativa. Foram percorridas as etapas de pré-produção, produção, pós-produção e avaliação do vídeo pelo público-alvo. Resultados: cinco enfermeiras avaliaram o storyboard do vídeo e apontaram a compreensão do tema, os tópicos abordados e a linguagem utilizada como adequadas e pertinentes à temática. Outras cinco enfermeiras consideraram presentes e desejáveis: qualidade da técnica audiovisual empregada, ambiente simulado, caracterização das personagens e desenvolvimento das estratégias de comunicação enfermeiro-paciente. A versão final do vídeo foi avaliada por nove estudantes de enfermagem que apresentaram nível de compreensão dos itens igual ou acima de 96%. O vídeo apresenta as seguintes estratégias: Estratégias gerais de comunicação, Comunicação Intercultural, NURSE, Tell me more, Ask-Tell-Ask, Comunicação Terapêutica e Comunicação de Más Notícias. Conclusão: este estudo retrata a criação de um vídeo, sua validação por peritos e sua avaliação pelo público-alvo, que manifestaram tratar-se de um recurso educativo relevante para o processo de ensino-aprendizagem de estratégias de comunicação. Os juízes e o público alvo consideraram o vídeo como um instrumento válido para ensinar sobre as estratégias de comunicação enfermeiro-paciente.


Assuntos
Humanos , Feminino , Estudantes de Enfermagem , Comunicação , Filme e Vídeo Educativo , Bacharelado em Enfermagem/métodos , Idioma , Aprendizagem , Relações Enfermeiro-Paciente
19.
Rev Bras Enferm ; 76Suppl 4(Suppl 4): e20220528, 2023.
Artigo em Inglês, Português | MEDLINE | ID: mdl-37971053

RESUMO

OBJECTIVE: To develop digital technology for patient and family integration into the Intensive Care Unit care team, aiming to subsidize decision-making for the prevention of infections related to healthcare. METHOD: Methodological research of technological production in three phases: pre-production, production, and post-production in a teaching hospital in southern Brazil. Sixteen intensive care unit nurses participated. RESULTS: The research produced six videos: general guidelines on the Intensive Care Unit, Preventing infections: hand hygiene; Pneumonia associated with mechanical ventilation; Catheter-associated primary bloodstream infection; Catheter-related urinary tract infection. FINAL CONSIDERATIONS: The proposed technology was developed and aims to assist nurses in bringing patients and families closer to the routines of the intensive care environment to provide safety in the contact of the patient of intensive care units with family members and in the active participation for the prevention of infections related to healthcare.


Assuntos
Infecções Relacionadas a Cateter , Infecção Hospitalar , Humanos , Infecção Hospitalar/prevenção & controle , Tecnologia Digital , Infecções Relacionadas a Cateter/prevenção & controle , Unidades de Terapia Intensiva , Cuidados Críticos
20.
Endocrinology ; 165(1)2023 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-37947352

RESUMO

Canonically, type 1 diabetes (T1D) is a disease characterized by autoreactive T cells as perpetrators of endocrine dysfunction and ß cell death in the spiral toward loss of ß cell mass, hyperglycemia, and insulin dependence. ß Cells have mostly been considered as bystanders in a flurry of autoimmune processes. More recently, our framework for understanding and investigating T1D has evolved. It appears increasingly likely that intracellular ß cell stress is an important component of T1D etiology/pathology that perpetuates autoimmunity during the progression to T1D. Here we discuss the emerging and complex role of ß cell stress in initiating, provoking, and catalyzing T1D. We outline the bridges between hyperglycemia, endoplasmic reticulum stress, oxidative stress, and autoimmunity from the viewpoint of intrinsic ß cell (dys)function, and we extend this discussion to the potential role for a therapeutic ß cell stress-metabolism axis in T1D. Lastly, we mention research angles that may be pursued to improve ß cell endocrine function during T1D. Biology gleaned from studying T1D will certainly overlap to innovate therapeutic strategies for T2D, and also enhance the pursuit of creating optimized stem cell-derived ß cells as endocrine therapy.


Assuntos
Diabetes Mellitus Tipo 1 , Hiperglicemia , Células Secretoras de Insulina , Humanos , Diabetes Mellitus Tipo 1/metabolismo , Células Secretoras de Insulina/metabolismo , Estresse do Retículo Endoplasmático , Hiperglicemia/metabolismo , Autoimunidade
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