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1.
Eur J Psychol ; 20(2): 104-115, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-39118998

RESUMEN

The corporeal turn in developmental psychology has rekindled interest regarding how early motor development contributes to and enhances cognitive development across the first years of life. By highlighting embodied perceptual-motor engagement with the world, embodied cognitive learning emphasizes the importance of experience and perceptual-motor mechanisms in modulating the development of person-environment systems. The field currently calls for research that combines such conceptual frameworks with the complex everyday material and sociocultural landscapes that resource infants' developmental trajectories. We, therefore, aim to connect the conceptual refinement of bodily-anchored exploration to the contextual reality of everyday settings of early childhood education (ECE)-here situated in the Brazilian context-as relevant social and cultural suppliers and modulators of the developmental trajectories of babies. Secondarily, we ponder on the premises of national pedagogical curricula and their role in mediating the quality of experiences and systems of person-environment relations more closely. Cultural-historical psychology, in dialogue with the principles of Ecological Psychology, constitutes the theoretical framework that underpins the microgenetic analyses conducted. By analyzing episodes of exploratory actions of a focal baby situated in the ECE context, we seek to apprehend motor-perceptual indicators of embodied cognitive processing by considering the modes of appropriation entailed in episodes of embodied exploration. We reflect on pedagogical implications considering official national documents of early childhood education. This work contributes by providing complementary insights into the nature of infants' everyday sociocultural embodied experiences and their development in pedagogically oriented settings.

3.
Front Cell Infect Microbiol ; 14: 1394663, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38873099

RESUMEN

In this study, we report the first isolation of Hanseniaspora opuntiae obtained from four pregnant women in Brazil. Clinical isolates were obtained from four samples taken between 35 and 37 gestational weeks, as part of the routine antenatal care for maternal colonization screening for Streptococcus agalactiae group B. The patients were immunocompetent, with two of them diagnosed with gestational diabetes mellitus. Species identification was performed by MALDI-TOF MS and rDNA sequencing. While Hanseniaspora species have not traditionally been considered a typical opportunist pathogen, our findings emphasize the importance of investigating and screening for Hanseniaspora in pregnant populations, highlighting H. opuntiae as a potential agent of human infections.


Asunto(s)
Complicaciones Infecciosas del Embarazo , Espectrometría de Masa por Láser de Matriz Asistida de Ionización Desorción , Adulto , Femenino , Humanos , Embarazo , Adulto Joven , Brasil , Diabetes Gestacional/microbiología , Diabetes Gestacional/diagnóstico , ADN Ribosómico/genética , Complicaciones Infecciosas del Embarazo/microbiología , Complicaciones Infecciosas del Embarazo/diagnóstico , Análisis de Secuencia de ADN , Streptococcus agalactiae/aislamiento & purificación , Streptococcus agalactiae/genética , Streptococcus agalactiae/clasificación , Vagina/microbiología
4.
Antibiotics (Basel) ; 13(5)2024 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-38786118

RESUMEN

Group B Streptococcus (GBS) is a major cause of contagious bovine mastitis (CBM) in Brazil. The GBS population is composed of host-generalist and host-specialist lineages, which may differ in antimicrobial resistance (AMR) and zoonotic potential, and the surveillance of bovine GBS is crucial to developing effective CBM control and prevention measures. Here, we investigated bovine GBS isolates (n = 156) collected in Brazil between 1987 and 2021 using phenotypic testing and whole-genome sequencing to uncover the molecular epidemiology of bovine GBS. Clonal complex (CC) 61/67 was the predominant clade in the 20th century; however, it was replaced by CC91, with which it shares a most common recent ancestor, in the 21st century, despite the higher prevalence of AMR in CC61/67 than in CC91, and high selection pressure for AMR from indiscriminate antimicrobial use in the Brazilian dairy industry. CC103 also emerged as a dominant CC in the 21st century, and a considerable proportion of herds had two or more GBS strains, suggesting poor biosecurity and within-herd evolution due to the chronic nature of CBM problems. The majority of bovine GBS belonged to serotype Ia or III, which was strongly correlated with CCs. Ninety-three isolates were resistant to tetracycline (≥8 µg/mL; tetO = 57, tetM = 34 or both = 2) and forty-four were resistant to erythromycin (2.0 to >4 µg/mL; ermA = 1, ermB = 38, mechanism unidentified n = 5). Only three isolates were non-susceptible to penicillin (≥8.0 µg/mL), providing opportunities for improved antimicrobial stewardship through the use of narrow-spectrum antimicrobials for the treatment of dairy cattle. The common bovine GBS clades detected in this study have rarely been reported in humans, suggesting limited risk of interspecies transmission of GBS in Brazil. This study provides new data to support improvements to CBM and AMR control, bovine GBS vaccine design, and the management of public health risks posed by bovine GBS in Brazil.

5.
Sci Rep ; 14(1): 11457, 2024 05 20.
Artículo en Inglés | MEDLINE | ID: mdl-38769365

RESUMEN

To compare two different wavelengths of the surgical contact diode laser (CDL) for producing a posterior laryngofissure in in-vivo pigs. Anesthetized pigs underwent a tracheostomy and an anterior laryngofissure through a cervicotomy. They were randomly selected for the CDL wavelength and Power, according to the peak of Power set at device (980nm wavelength: Ppeak power of 10 W, 15 W, and 20 W, or 1470 nm wavelength: Ppeak 3 W, 5 W, 7 W, 10 W). At the end of the experiment, the laryngotracheal specimen was extracted and sent for histology and morphometry measurements (incision size, depth, area, and lateral thermal damage). Hemodynamic data and arterial blood gases were recorded during the incisions. Statistical analysis of the comparisons between the parameters and groups had a level of significance of p < 0.05. Twenty-six pigs were divided into CDL 980 nm (n = 11) and 1470 nm (n = 15). There was a greater incision area at the thyroid level in the 980 nm CDL and a wider incision at the trachea level, with a larger distance between mucosa borders. There were no significant differences in the area of lateral thermal damage between the two groups and neither difference among the power levels tested. Both wavelengths tested showed similar results in the various combinations of power levels without significant differences in the lateral thermal damage. The posterior laryngofissure incision can be performed by either of the wavelengths at low and medium power levels without great difference on lateral thermal damage.


Asunto(s)
Laringe , Láseres de Semiconductores , Animales , Porcinos , Laringe/cirugía , Terapia por Láser/métodos , Tráquea/cirugía
6.
Respir Res ; 25(1): 129, 2024 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-38500106

RESUMEN

BACKGROUND: Acute respiratory distress syndrome (ARDS) is a common cause of respiratory failure in critically ill patients, and diffuse alveolar damage (DAD) is considered its histological hallmark. Sepsis is one of the most common aetiology of ARDS with the highest case-fatality rate. Identifying ARDS patients and differentiate them from other causes of acute respiratory failure remains a challenge. To address this, many studies have focused on identifying biomarkers that can help assess lung epithelial injury. However, there is scarce information available regarding the tissue expression of these markers. Evaluating the expression of elafin, RAGE, and SP-D in lung tissue offers a potential bridge between serological markers and the underlying histopathological changes. Therefore, we hypothesize that the expression of epithelial injury markers varies between sepsis and ARDS as well as according to its severity. METHODS: We compared the post-mortem lung tissue expression of the epithelial injury markers RAGE, SP-D, and elafin of patients that died of sepsis, ARDS, and controls that died from non-pulmonary causes. Lung tissue was collected during routine autopsy and protein expression was assessed by immunohistochemistry. We also assessed the lung injury by a semi-quantitative analysis. RESULTS: We observed that all features of DAD were milder in septic group compared to ARDS group. Elafin tissue expression was increased and SP-D was decreased in the sepsis and ARDS groups. Severe ARDS expressed higher levels of elafin and RAGE, and they were negatively correlated with PaO2/FiO2 ratio, and positively correlated with bronchopneumonia percentage and hyaline membrane score. RAGE tissue expression was negatively correlated with mechanical ventilation duration in both ARDS and septic groups. In septic patients, elafin was positively correlated with ICU admission length, SP-D was positively correlated with serum lactate and RAGE was correlated with C-reactive protein. CONCLUSIONS: Lung tissue expression of elafin and RAGE, but not SP-D, is associated with ARDS severity, but does not discriminate sepsis patients from ARDS patients.


Asunto(s)
Lesión Pulmonar Aguda , Síndrome de Dificultad Respiratoria , Sepsis , Humanos , Elafina , Proteína D Asociada a Surfactante Pulmonar , Pulmón , Síndrome de Dificultad Respiratoria/diagnóstico , Sepsis/diagnóstico , Sepsis/complicaciones
7.
Antibiotics (Basel) ; 13(1)2024 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-38247643

RESUMEN

Streptococcus agalactiae (Group B Streptococcus; GBS) is a leading cause of neonatal invasive disease worldwide. GBS can colonize the human gastrointestinal and genitourinary tracts, and the anovaginal colonization of pregnant women is the main source for neonatal infection. Streptococcus anginosus, in turn, can colonize the human upper respiratory, gastrointestinal, and genitourinary tracts but has rarely been observed causing disease. However, in the last years, S. anginosus has been increasingly associated with human infections, mainly in the bloodstream and gastrointestinal and genitourinary tracts. Although anovaginal screening for GBS is common during pregnancy, data regarding the anovaginal colonization of pregnant women by S. anginosus are still scarce. Here, we show that during the assessment of anovaginal GBS colonization rates among pregnant women living in Rio de Janeiro, Brazil, S. anginosus was also commonly detected, and S. anginosus isolates presented a similar colony morphology and color pattern to GBS in chromogenic media. GBS was detected in 48 (12%) while S. anginosus was detected in 17 (4.3%) of the 399 anovaginal samples analyzed. The use of antibiotics during pregnancy and history of urinary tract infections and sexually transmitted infections were associated with the presence of S. anginosus. In turn, previous preterm birth was associated with the presence of GBS (p < 0.05). The correlation of GBS and S. anginosus with relevant clinical features of pregnant women in Rio de Janeiro, Brazil, highlights the need for the further investigation of these important bacteria in relation to this special population.

8.
BMC Pulm Med ; 24(1): 22, 2024 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-38195527

RESUMEN

BACKGROUND: Lymphangioleiomyomatosis (LAM) is a rare neoplastic and cystic pulmonary disease characterized by abnormal proliferation of the so-called LAM cells. Despite the functional obstructive pattern observed in most patients, few studies investigated the morphological changes in the small airways, most of them in patients with severe and advanced LAM undergoing lung transplantation. Understanding the morphological changes in the airways that may occur early in the disease can help us understand the pathophysiology of disease progression and understand the rationale for possible therapeutic approaches, such as the use of bronchodilators. Our study aimed to characterize the morphological alterations of the small airways in patients with LAM with different severities compared to controls, and their association with variables at the pulmonary function test and with LAM Histological Score (LHS). METHODS: Thirty-nine women with LAM who had undergone open lung biopsy or lung transplantation, and nine controls were evaluated. The histological severity of the disease was assessed as LHS, based on the percentage of tissue involvement by cysts and infiltration by LAM cells. The following morphometric parameters were obtained: airway thickness, airway closure index, collagen and airway smooth muscle content, airway epithelial TGF-ß expression, and infiltration of LAM cells and inflammatory cells within the small airway walls. RESULTS: The age of patients with LAM was 39 ± 8 years, with FEV1 and DLCO of 62 ± 30% predicted and 62 ± 32% predicted, respectively. Patients with LAM had increased small airway closure index, collagen and smooth muscle content, and epithelial TGF-beta expression compared with controls. Patients with LAM with the more severe LHS and with greater functional severity (FEV1 ≤ 30%) presented higher thicknesses of the airways. Bronchiolar inflammation was mild; infiltration of the small airway walls by LAM cells was rare. LHS was associated with an obstructive pattern, air trapping, and reduced DLCO, whereas small airway wall thickness was associated with FEV1, FVC, and collagen content. CONCLUSION: LAM is associated with small airway remodelling and partial airway closure, with structural alterations observed at different airway compartments. Functional impairment in LAM is associated with airway remodelling and, most importantly, with histological severity (LHS).


Asunto(s)
Linfangioleiomiomatosis , Humanos , Femenino , Adulto , Persona de Mediana Edad , Remodelación de las Vías Aéreas (Respiratorias) , Biopsia , Colágeno , Factor de Crecimiento Transformador beta
9.
J Allergy Clin Immunol ; 153(2): 435-446.e4, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37805024

RESUMEN

BACKGROUND: Airway remodeling is a prominent feature of asthma, which involves increased airway smooth muscle mass and altered extracellular matrix composition. Bronchial thermoplasty (BT), a bronchoscopic treatment for severe asthma, targets airway remodeling. OBJECTIVE: We sought to investigate the effect of BT on extracellular matrix composition and its association with clinical outcomes. METHODS: This is a substudy of the TASMA trial. Thirty patients with severe asthma were BT-treated, of whom 13 patients were treated for 6 months with standard therapy (control group) before BT. Demographic data, clinical data including pulmonary function, and bronchial biopsies were collected. Biopsies at BT-treated and nontreated locations were analyzed by histological and immunohistochemical staining. Associations between histology and clinical outcomes were explored. RESULTS: Six months after treatment, it was found that the reticular basement membrane thickness was reduced from 7.28 µm to 5.74 µm (21% relative reduction) and the percentage area of tissue positive for collagen increased from 26.3% to 29.8% (13% relative increase). Collagen structure analysis revealed a reduction in the curvature frequency of fibers. The percentage area positive for fibulin-1 and fibronectin increased by 2.5% and 5.9%, respectively (relative increase of 124% and 15%). No changes were found for elastin. The changes in collagen and fibulin-1 negatively associated with changes in FEV1 reversibility. CONCLUSIONS: Besides reduction of airway smooth muscle mass, BT has an impact on reticular basement membrane thickness and the extracellular matrix arrangement characterized by an increase in tissue area occupied by collagen with a less dense fiber organization. Both collagen and fibulin-1 are negatively associated with the change in FEV1 reversibility.


Asunto(s)
Asma , Termoplastia Bronquial , Humanos , Bronquios/cirugía , Bronquios/patología , Remodelación de las Vías Aéreas (Respiratorias) , Asma/tratamiento farmacológico , Matriz Extracelular/patología , Colágeno
10.
Respir Res ; 24(1): 281, 2023 Nov 14.
Artículo en Inglés | MEDLINE | ID: mdl-37964271

RESUMEN

BACKGROUND: Lung fibrosis is a major concern in severe COVID-19 patients undergoing mechanical ventilation (MV). Lung fibrosis frequency in post-COVID syndrome is highly variable and even if the risk is proportionally small, many patients could be affected. However, there is still no data on lung extracellular matrix (ECM) composition in severe COVID-19 and whether it is different from other aetiologies of ARDS. METHODS: We have quantified different ECM elements and TGF-ß expression in lung tissue of 28 fatal COVID-19 cases and compared to 27 patients that died of other causes of ARDS, divided according to MV duration (up to six days or seven days or more). In COVID-19 cases, ECM elements were correlated with lung transcriptomics and cytokines profile. RESULTS: We observed that COVID-19 cases presented significant increased deposition of collagen, fibronectin, versican, and TGF-ß, and decreased decorin density when compared to non-COVID-19 cases of similar MV duration. TGF-ß was precociously increased in COVID-19 patients with MV duration up to six days. Lung collagen was higher in women with COVID-19, with a transition of upregulated genes related to fibrillogenesis to collagen production and ECM disassembly along the MV course. CONCLUSIONS: Fatal COVID-19 is associated with an early TGF-ß expression lung environment after the MV onset, followed by a disordered ECM assembly. This uncontrolled process resulted in a prominent collagen deposition when compared to other causes of ARDS. Our data provides pathological substrates to better understand the high prevalence of pulmonary abnormalities in patients surviving COVID-19.


Asunto(s)
COVID-19 , Fibrosis Pulmonar , Síndrome de Dificultad Respiratoria , Humanos , Femenino , Fibrosis Pulmonar/metabolismo , COVID-19/metabolismo , Matriz Extracelular/metabolismo , Colágeno/metabolismo , Pulmón/metabolismo , Factor de Crecimiento Transformador beta/farmacología , Síndrome de Dificultad Respiratoria/metabolismo
11.
ACS Omega ; 8(37): 34008-34016, 2023 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-37744786

RESUMEN

Leishmaniasis refers to a collection of diseases caused by protozoa from the Leishmania genus. These diseases, along with other parasitic afflictions, pose a significant public health issue, particularly given the escalating number of at-risk patients. This group includes immunocompromised individuals and those residing in impoverished conditions. The treatment of leishmaniasis is crucial, particularly in light of the mortality rate associated with nontreatment, which stands at 20-30,000 deaths per year globally. However, the therapeutic options currently available are limited, often ineffective, and potentially toxic. Consequently, the pursuit of new therapeutic alternatives is warranted. This study aims to design, synthesize, and evaluate the leishmanicidal activity of antimicrobial peptides functionalized with guanidine compounds and identify those with enhanced potency and selectivity against the parasite. Accordingly, three bioconjugates were obtained by using the solid-phase peptide synthesis protocol. Each proved to be more potent against intracellular amastigotes than their respective peptide or guanidine compounds alone and demonstrated higher selectivity to the parasites than to the host cells. Thus, the conjugation strategy employed with these compounds effectively contributes to the development of new molecules with leishmanicidal activity.

13.
Bioengineering (Basel) ; 10(5)2023 May 12.
Artículo en Inglés | MEDLINE | ID: mdl-37237655

RESUMEN

Tracheal replacement with a bioengineered tracheal substitute has been developed for long-segment tracheal diseases. The decellularized tracheal scaffold is an alternative for cell seeding. It is not defined if the storage scaffold produces changes in the scaffold's biomechanical properties. We tested three protocols for porcine tracheal scaffold preservation immersed in PBS and alcohol 70%, in the fridge and under cryopreservation. Ninety-six porcine tracheas (12 in natura, 84 decellularized) were divided into three groups (PBS, alcohol, and cryopreservation). Twelve tracheas were analyzed after three and six months. The assessment included residual DNA, cytotoxicity, collagen contents, and mechanical properties. Decellularization increased the maximum load and stress in the longitudinal axis and decreased the maximum load in the transverse axis. The decellularization of the porcine trachea produced structurally viable scaffolds, with a preserved collagen matrix suitable for further bioengineering. Despite the cyclic washings, the scaffolds remained cytotoxic. The comparison of the storage protocols (PBS at 4 °C, alcohol at 4 °C, and slow cooling cryopreservation with cryoprotectants) showed no significant differences in the amount of collagen and in the biomechanical properties of the scaffolds. Storage in PBS solution at 4 °C for six months did not change the scaffold mechanics.

14.
Int J Mol Sci ; 24(5)2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36902148

RESUMEN

Chitotriosidase (CHIT1) is an enzyme produced by macrophages that regulates their differentiation and polarization. Lung macrophages have been implicated in asthma development; therefore, we asked whether pharmacological inhibition of macrophage-specific CHIT1 would have beneficial effects in asthma, as it has been shown previously in other lung disorders. CHIT1 expression was evaluated in the lung tissues of deceased individuals with severe, uncontrolled, steroid-naïve asthma. OATD-01, a chitinase inhibitor, was tested in a 7-week-long house dust mite (HDM) murine model of chronic asthma characterized by accumulation of CHIT1-expressing macrophages. CHIT1 is a dominant chitinase activated in fibrotic areas of the lungs of individuals with fatal asthma. OATD-01 given in a therapeutic treatment regimen inhibited both inflammatory and airway remodeling features of asthma in the HDM model. These changes were accompanied by a significant and dose-dependent decrease in chitinolytic activity in BAL fluid and plasma, confirming in vivo target engagement. Both IL-13 expression and TGFß1 levels in BAL fluid were decreased and a significant reduction in subepithelial airway fibrosis and airway wall thickness was observed. These results suggest that pharmacological chitinase inhibition offers protection against the development of fibrotic airway remodeling in severe asthma.


Asunto(s)
Remodelación de las Vías Aéreas (Respiratorias) , Asma , Quitinasas , Inhibidores de Proteínas Quinasas , Animales , Humanos , Ratones , Remodelación de las Vías Aéreas (Respiratorias)/efectos de los fármacos , Asma/patología , Asma/terapia , Quitinasas/antagonistas & inhibidores , Modelos Animales de Enfermedad , Pulmón/metabolismo , Macrófagos/enzimología , Pyroglyphidae/metabolismo , Inhibidores de Proteínas Quinasas/farmacología , Inhibidores de Proteínas Quinasas/uso terapéutico
15.
Community Dent Oral Epidemiol ; 51(5): 738-745, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-35430737

RESUMEN

OBJECTIVES: Oral health behaviour is a learning process that begins in the early years of an individual's life. The aim of this study was to evaluate the associations between demographic, socioeconomic, and psychosocial factors and oral health behaviours during the transition period from childhood to adolescence. METHODS: This was a cohort study with a follow-up of 7 years. The baseline assessment occurred in 2010 with a random sample of 639 preschool children from southern Brazil. Demographic, socioeconomic and psychosocial oral health conditions were assessed at baseline. Oral health habit variables were collected at follow-up and included questions regarding dental care and oral hygiene behaviours. Structural equation modelling was performed to assess the direct and indirect relationships between predictors at baseline in oral health behaviours at follow-up. RESULTS: A total of 449 children were re-examined at follow-up (70.3% cohort retention rate). Factors directly related to poorer oral health behaviours (lower use of dental services, dental visits for emergency reasons and lower frequency of toothbrushing) were lower household income, lower maternal education, lower frequency of visits to neighbours or friends, and male sex. Considering indirect pathways, the household income and maternal education at baseline influenced oral health behaviours at follow-up via visits to neighbours or friends. CONCLUSIONS: Our findings suggest that household income, maternal education and social capital play an important role in the development of oral health behaviours during the transition from childhood to adolescence. Acquisition of healthy oral behaviours is an important factor to consider in childhood. With this knowledge, public health policies can be developed to intervene in specific causal factors and improve oral health during this transitional period.


Asunto(s)
Caries Dental , Salud Bucal , Humanos , Preescolar , Masculino , Adolescente , Estudios de Cohortes , Análisis de Clases Latentes , Cepillado Dental , Conductas Relacionadas con la Salud , Caries Dental/etiología
16.
Int J Risk Saf Med ; 34(1): 5-19, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36442211

RESUMEN

BACKGROUND: The COVID-19 pandemic highlighted the need for a new dynamic in the organization and practices of health services, as it required rapid restructuring to promote safe and harm-free assistance. OBJECTIVE: To assess the dimensions of the patient safety culture (PSC) from the perspective of the health team professionals in clinical-surgical ICU (G1) compared to a COVID-19 ICU (G2). METHODS: Cross-sectional, analytical, descriptive and inferential study, using the "Hospital Survey on Patient Safety Culture" questionnaire. RESULTS: The domain "Supervisor/Manager Expectations and Actions Promoting Patient Safety (PS)" was a potential weakness for G1 (p = 0.003). G2 was most positive on improving PS, being informed about errors, considering PS as a top priority to management, and that the units work together to provide the best care (p > 0.05). G1 was most negative about the work culture with staff from other units, exchange of information across units, and shift changes (p > 0.05). The highest PS grade was related to greater communication, and a smaller frequency of events was reported only for G2 (p > 0.05). CONCLUSION: There must be a balance in terms of attention focused on PS between different ICUs in times of crisis, especially regarding the supervisors/managers actions.


Asunto(s)
COVID-19 , Cultura Organizacional , Humanos , Estudios Transversales , Seguridad del Paciente , Brasil/epidemiología , Pandemias , COVID-19/epidemiología , Administración de la Seguridad , Unidades de Cuidados Intensivos , Encuestas y Cuestionarios
17.
São José dos Campos; s.n; 2023. 50 p. ilus, tab.
Tesis en Portugués | BBO - Odontología | ID: biblio-1553269

RESUMEN

A articulação temporomandibular (ATM) é considerada uma das mais complexas articulações que compõem o sistema musculoesquelético. Aspectos anatômicos da sua localização impõe dificuldades de acesso e abordagem clínica das disfunções temporomandibulares (DTM), sendo o método tomográfico computadorizado por feixe cônico (TCFC) uma modalidade que possibilita identificação dos componentes ósseos da ATM e processos patológicos como a doença articular degenerativa (DAD). Este estudo teve como objetivo caracterizar o osso medular de cabeças de mandíbula acometidas por aplainamento, osteófito e erosão. Foram realizadas análise de textura (AT) em 80 imagens de TCFC de cabeças de mandíbula, com três regiões de interesse (ROIs) correspondentes aos sítios ósseos específicos. Os exames foram exportados para o software MaZda, onde as ROIs foram delimitados seguindo os contornos previamente demarcados e valores da matriz de coocorrência (MCO) foram calculados para os parâmetros selecionados da AT. Posteriormente os dados foram submetidos a análise estatística com o teste de Kruskal-Wallis com correção do p-valor pelo método FDR e nível de significância de 5%. O grupo erosão apresentou um comportamento significativamente diferente dos demais grupos de estudo em todos os parâmetros analisados. Pôde-se concluir que as medulares ósseas condilares de ATM acometidas por erosão apresentaram comportamentos distintos, indicando que já haja processos de alterações degenerativas instalados possibilitando assim a avaliação da condição medular em TCFC através da AT(AU)


The temporomandibular joint (TMJ) is considered one of the most complex joints that make up the musculoskeletal system. Anatomical aspects of its location impose difficulties in accessing and clinically approaching temporomandibular disorders (TMD), with the cone beam computed tomographic method (CBCT) being a modality that allows the identification of the bone components of the TMJ and pathological processes such as degenerative joint disease (DAD). This study aimed to characterize the medullary bone of mandible heads affected by flattening, and erosion. Texture analysis (TA) was performed on 80 CBCT images of condyle heads, with three regions of interest (ROIs) corresponding to specific bone sites. The exams were exported to the MaZda software, where the ROIs were delimited following previously marked contours and values of the co-occurrence matrix (MCO) were calculated for the selected TA parameters. Subsequently, the data were submitted to statistical analysis with the Kruskal-Wallis test with correction of the p-value by the FDR method and a significance level of 5%. The erosion group showed a significantly different behavior from the other study groups in all analyzed parameters. It could be concluded that the TMJ condylar bone marrow affected by showed different behaviors, indicating that there are already installed of degenerative alterations, thus enabling the assessment of the spinal cord condition in CBCT through TA.(AU)


Asunto(s)
Articulación Temporomandibular , Diagnóstico por Imagen , Tomografía Computarizada de Haz Cónico
18.
Respir Res ; 23(1): 335, 2022 Dec 09.
Artículo en Inglés | MEDLINE | ID: mdl-36494835

RESUMEN

BACKGROUND: Studies in adult severe treatment-resistant asthma (STRA) have demonstrated heterogeneous pathophysiology. Studies in the pediatric age group are still scarce, and few include bronchial tissue analysis. OBJECTIVE: We investigated 6-18-year-old patients diagnosed with STRA in Sao Paulo, Brazil, by characterizing the different lung compartments and their correlations with asthma control and lung function. METHODS: Inflammatory profiles of 13 patients with a confirmed diagnosis of STRA were analyzed using blood, induced sputum, bronchoalveolar lavage, viral and bacterial screens and endobronchial biopsy. Inflammatory cells, cytokines, and basement membrane thickening were tested for correlations with the asthma control test (ACT) and spirometry and plethysmography parameters. RESULTS: Endobronchial biopsy specimens from 11 patients were viable for analysis. All biopsies showed eosinophilic infiltration. Submucosal (SM) eosinophils and neutrophils were correlated with worse lung function (pre-BD FEV1), and SM neutrophils were correlated with fixed obstruction (post-BD FEV1). Intraepithelial (IE) neutrophils were positively correlated with lung function (pre-BD sGaw). CD8 + T cells had the highest density in the IE and SM layers and were positively correlated with ACT and negatively correlated with the cytokines IL1ß, IL2, IL5, IL7, IL10, IL12, IL17, GCSF, MCP-1, INF-δ, and TNFα in sputum supernatant. The ASM chymase + mast cell density correlated positively with quality-of-life score (pAQLQ) and ACT. CONCLUSION: Eosinophils and SM neutrophils correlated with worse lung function, while IE neutrophils correlated with better lung function. Most importantly, CD8 + T cells were abundant in bronchial biopsies of STRA patients and showed protective associations, as did chymase + mast cells.


Asunto(s)
Asma , Eosinófilos , Adolescente , Adulto , Humanos , Niño , Brasil/epidemiología , Eosinófilos/patología , Neutrófilos/patología , Esputo , Pulmón , Linfocitos T/patología
19.
Contemp Oncol (Pozn) ; 26(3): 174-179, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36381674

RESUMEN

The prevalence of breast cancer in women is a fundamental problem in public health worldwide. There is consensual evidence that many chemotherapeutic agents might have harmful effects on the cardiovascular system of patients. The cardiotoxicity of chemotherapeutic drugs might lead to ventricular systolic dysfunction and heart failure, and consequently cardioactive drugs, such as antihypertensive, might mitigate those cardiac dysfunctions. Thus, this study carried out an integrative literature review on the potential benefits of cardioactive drugs in cardiovascular repercussions resulting from chemotherapy (CT), especially in women with breast cancer. The research involved articles available on the PubMed, LILACS, and MedLine databases, using as descriptors "breast cancer", "chemotherapy", "cardiotoxicity", and "antihypertensive"; 11 articles were selected. The data corroborate an association between the use of antineoplastic drugs (anthracyclines, fluorouracil, and anti-HER2 monoclonal antibody, trastuzumab) and cardiotoxic effects, and anthracyclines are the most studied CT drugs in relation to cardiac dysfunction. The cardioprotective effect of cardioactive drugs, including non-selective and selective beta-blockers classes, angiotensin-converting enzyme inhibitors, and angiotensin receptor blockers, could be observed in clinical outcomes. Nonetheless, the drugs have different cardioprotective effects on breast cancer patients and left ventricular ejection fraction; the serum concentrations of troponins and brain natriuretic peptide were the most frequent parameters analysed in selected articles. In summary, cardiovascular parameters should be followed-up in patients undergoing oncology treatment in all stages, regardless of the therapeutic scheme carried out, given the risk of developing and worsening such heart conditions.

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