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1.
Fish Physiol Biochem ; 2024 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-39020065

RESUMO

This study aimed to evaluate the effects of Protium heptaphyllum fruit essential oil (PHEO) on the physiology of silver catfish (Rhamdia quelen) during anesthesia and recovery, through studying echocardiograms, oxidative status, and metabolic parameters. Three experiments were performed: (1) 50 silver catfish juveniles were submitted to anesthesia and recovery tests with 300, 400, 500, 600, and 700 mg L-1 of PHEO. (2) Echocardiogram analysis was performed in anesthetized and non-anesthetized fish. (3) Biochemical parameters were evaluated at 0, 30, 60, and 120 min of recovery after being anesthetized for 3 min with 600 mg L-1 PHEO. Times to sedation and deep anesthesia were reduced with PHEO increasing concentrations. The echocardiogram showed a higher cardiac rate in anesthetized fish. Plasma glucose levels increased in control fish through recovery time, but anesthetized fish showed lower levels than controls at 120 min of recovery. Metabolic parameters such as plasma and hepatic glucose did not show changes considering the recovery time of up to 120 min. Hepatic glycogen, lactate, and triglycerides reduced their levels over recovery times. Fish anesthetized enhanced superoxide dismutase activity and thiobarbituric acid reactive substances levels but decreased reduced glutathione (GSH) levels at 30 min compared to controls. After 60 min, GSH values were significantly higher in anesthetized fish than in controls. These results suggest that PHEO at 600 mg L-1 is an effective anesthetic for the rapid handling of silver catfish, providing stable metabolic parameters and enhanced antioxidant responses during recovery. Echocardiogram analysis confirms the anesthetic effect, supporting PHEO as a viable and efficient option for fish anesthesia in aquaculture. The use of PHEO in aquaculture can enhance fish welfare by reducing stress during handling and transportation, potentially leading to improved growth, health, and survival rates.

2.
Fish Physiol Biochem ; 50(4): 1461-1481, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38722480

RESUMO

This study evaluated the use of essential oil of Ocimum gratissimum (EOOG) for anesthesia and in transport of Colossoma macropomum. Experiment 1, Test 1, anesthesia induction and recovery times were determined using different EOOG concentrations (0, 20, 50, 100, 200, 300 mg L-1), with two size classes: Juveniles I (0.86 g) and Juveniles II (11.46 g) (independent tests in a completely randomized design). Based on the results of Test 1, in Test 2 Juveniles II were exposed to EOOG concentrations: 0, 20, 100 mg L-1. Tissue samples were collected immediately after induction and 1 h post-recovery, to assess oxidative status variables. Experiment 2, Juveniles I (0.91 g) and Juveniles II (14.76 g) were submitted to transport in water with different concentrations of EOOG (0, 5, 10 mg L-1) (independent tests in a completely randomized design). The effects on oxidative status variables were evaluated. Concentrations between 50 and 200 mg L-1 EOOG can be indicated for Juveniles I, while concentrations between 50 and 100 mg L-1 EOOG for Juveniles II. The concentration of 100 mg L-1 EOOG was able to prevent oxidative damage in the liver. In Experiment 2, the concentrations of 5 and 10 mg L-1 EOOG added to the transport water caused sedation for both studied size classes of juveniles and did not cause oscillations in water quality variables nor any mortality. The concentration of 10 mg L-1 EOOG improved the oxidative status. It can be concluded that EOOG can be used for anesthesia and transport of C. macropomum.


Assuntos
Ocimum , Óleos Voláteis , Animais , Óleos Voláteis/farmacologia , Ocimum/química , Estresse Oxidativo/efeitos dos fármacos , Caraciformes , Anestesia/veterinária , Fígado/metabolismo , Fígado/efeitos dos fármacos
3.
Int J Mol Sci ; 25(9)2024 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-38732272

RESUMO

Lung branching morphogenesis relies on intricate epithelial-mesenchymal interactions and signaling networks. Still, the interplay between signaling and energy metabolism in shaping embryonic lung development remains unexplored. Retinoic acid (RA) signaling influences lung proximal-distal patterning and branching morphogenesis, but its role as a metabolic modulator is unknown. Hence, this study investigates how RA signaling affects the metabolic profile of lung branching. We performed ex vivo lung explant culture of embryonic chicken lungs treated with DMSO, 1 µM RA, or 10 µM BMS493. Extracellular metabolite consumption/production was evaluated by using 1H-NMR spectroscopy. Mitochondrial respiration and biogenesis were also analyzed. Proliferation was assessed using an EdU-based assay. The expression of crucial metabolic/signaling components was examined through Western blot, qPCR, and in situ hybridization. RA signaling stimulation redirects glucose towards pyruvate and succinate production rather than to alanine or lactate. Inhibition of RA signaling reduces lung branching, resulting in a cystic-like phenotype while promoting mitochondrial function. Here, RA signaling emerges as a regulator of tissue proliferation and lactate dehydrogenase expression. Furthermore, RA governs fatty acid metabolism through an AMPK-dependent mechanism. These findings underscore RA's pivotal role in shaping lung metabolism during branching morphogenesis, contributing to our understanding of lung development and cystic-related lung disorders.


Assuntos
Metabolismo Energético , Pulmão , Morfogênese , Transdução de Sinais , Tretinoína , Animais , Tretinoína/metabolismo , Tretinoína/farmacologia , Pulmão/metabolismo , Pulmão/efeitos dos fármacos , Pulmão/embriologia , Metabolismo Energético/efeitos dos fármacos , Morfogênese/efeitos dos fármacos , Transdução de Sinais/efeitos dos fármacos , Embrião de Galinha , Proliferação de Células/efeitos dos fármacos , Mitocôndrias/metabolismo , Mitocôndrias/efeitos dos fármacos , Galinhas
4.
Indian Heart J ; 76(3): 147-153, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38609052

RESUMO

Heart failure (HF) is emerging as a major public health problem both in high- and low - income countries. The mortality and morbidity due to HF is substantially higher in low-middle income countries (LMICs). Accessibility, availability and affordability issues affect the guideline directed therapy implementation in HF care in those countries. This call to action urges all those concerned to initiate preventive strategies as early as possible, so that we can reduce HF-related morbidity and mortality. The most important step is to have better prevention and treatment strategies for diseases such as hypertension, ischemic heart disease (IHD), type-2 diabetes, and rheumatic heart disease (RHD) which predispose to the development of HF. Setting up dedicated HF-clinics manned by HF Nurses, can help in streamlining HF care. Subsidized in-patient care, financial assistance for device therapy, use of generic medicines (including polypill strategy) will be helpful, along with the use of digital technologies.


Assuntos
Cardiologia , Insuficiência Cardíaca , Sociedades Médicas , Humanos , Insuficiência Cardíaca/terapia , Insuficiência Cardíaca/tratamento farmacológico , Índia/epidemiologia , Pandemias , Consenso , Congressos como Assunto , Morbidade/tendências , Saúde Global
5.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1558089

RESUMO

Objective: To evaluate the progression of caries around orthodontic brackets after the enamel has been exposed to lacteal products containing probiotics. Methods: Orthodontic brackets were bonded to the enamel surfaces. The test specimens were randomly divided into six groups: G1-negative control; G2-positive control, exposed to culture environment only (without microorganisms); G3-exposed to the cariogenic environment and the fermented cow's milk without probiotic; G4-exposed to the cariogenic environment and fermented cow's milk with probiotic; G5-exposed to the cariogenic environment and yogurt without probiotic; and G6-exposed to the cariogenic environment and yogurt with probiotic. The groups were placed in brain heart infusion medium, supplemented with 2% sucrose and with 1x106 cells/ml of Streptococcus mutans and Streptococcus salivarius (ATCC). The Shapiro-Wilk, Levene, Student t, Kruskal-Wallis, and Mann-Whitney tests were used. Results: all groups exposed to the ATCC strains showed lower final microhardness, compared to the negative control (p0.05). Conclusions: Lacteal products are not able to prevent the progression of caries around orthodontic brackets.

6.
Sensors (Basel) ; 24(5)2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38475148

RESUMO

Ensuring precise angle measurement during surgical correction of orientation-related deformities is crucial for optimal postoperative outcomes, yet there is a lack of an ideal commercial solution. Current measurement sensors and instrumentation have limitations that make their use context-specific, demanding a methodical evaluation of the field. A systematic review was carried out in March 2023. Studies reporting technologies and validation methods for intraoperative angular measurement of anatomical structures were analyzed. A total of 32 studies were included, 17 focused on image-based technologies (6 fluoroscopy, 4 camera-based tracking, and 7 CT-based), while 15 explored non-image-based technologies (6 manual instruments and 9 inertial sensor-based instruments). Image-based technologies offer better accuracy and 3D capabilities but pose challenges like additional equipment, increased radiation exposure, time, and cost. Non-image-based technologies are cost-effective but may be influenced by the surgeon's perception and require careful calibration. Nevertheless, the choice of the proper technology should take into consideration the influence of the expected error in the surgery, surgery type, and radiation dose limit. This comprehensive review serves as a valuable guide for surgeons seeking precise angle measurements intraoperatively. It not only explores the performance and application of existing technologies but also aids in the future development of innovative solutions.


Assuntos
Imageamento Tridimensional , Humanos , Imageamento Tridimensional/métodos , Fluoroscopia/métodos , Cirurgia Assistida por Computador/métodos , Tomografia Computadorizada por Raios X/métodos
8.
Front Pharmacol ; 15: 1336878, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38362154

RESUMO

Background: Pogostemon heyneanus leaves infusions are relevant in ethnopharmacology for treating colds, coughs, headaches, and asthma. Purpose: The essential oil chemical composition of a Pogostemon heyneanus specimen was monthly monitored from October 2021 to July 2022 to evaluate the climatic influences on its yield and chemical composition and antinociceptive, andanti-inflammatory properties. Methods: The leaves, collected monthly over a 10-month period, were submitted to hydrodistillation. The oils obtained were analyzed by gas chromatography coupled to a mass spectrometer and gas chromatography coupled to flame ionization detector. The P. heyneanus essential oil (PhEO) was tested in vivo to evaluate its peripheral analgesic actions through the abdominal writhing test induced by acetic acid, and peripheral analgesia by tail immersion. Neurogenic and inflammatory pain were evaluated by formalin test, and acute oral toxicity of the oil was also verified. Results: PhEO presented 27 chemical constituents with the highest predominance of patchoulol (43.6%-76.9%), α-bulnesene (0.2%-12.7%), α-guaiene (0.4%-8.9%), seychellene (3.8%-5.1%) and pogostol (0.0%-8.2%). The climatic parameters insolation, humidity, rainfall, and temperature did not influence the essential oil yield or the main chemical constituents, except for pogostol, which presented a strong (r = 0.73) and statistically significant (p < 0.05) correlation with temperature. PhEO did not display toxicity at the maximum 300 mg/kg dosage. The oil showed low peripheral and central analgesic action at 100 mg/kg, while in the neurogenic and inflammatory pain inhibition tests, no actions related to PhEO were observed. In the carrageenan-induced peritonitis test, PhEO did not reduce the migration of leukocytes to the peritoneal cavity compared to the control group. Conclusion: Pogostemon heyneanus is a resistant plant to seasonal influences and a source of patchoulol. Despite ethnopharmacological indications, no in-vivo biological activities such as neurogenic or inflammatory pain were identified in the present work. So, the low influence of the climatic parameters on chemical composition can infer that the low pharmacological activity is also not subject to climatic variations, that is, it does not change due to the climate.

9.
Aliment Pharmacol Ther ; 59(1): 71-79, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37833826

RESUMO

BACKGROUND: Bone marrow transplantation (BMT) is a standard treatment for several haematologic conditions. Following BMT, patients may develop hepatobiliary complications that impact morbidity and mortality. The differential diagnosis may include drug-induced liver injury (DILI), sepsis-associated liver injury (SALI), sinusoidal obstruction syndrome (SOS), graft-versus-host disease (GVHD), viral hepatitis, ischaemic hepatitis, and fulminant hepatitis. AIMS: To evaluate the frequency, clinical characteristics, and outcomes of patients with hepatobiliary alterations associated with BMT in a tertiary referral centre. METHODS: This was a cross-sectional study with data collected from the medical records of patients undergoing BMT between January 2017 and June 2022. We diagnosed hepatobiliary complications based on established criteria. RESULTS: We included 377 patients; 55.7% had hepatobiliary complications. Female gender, pre-BMT hepatobiliary alteration, and haploidentical allogeneic transplantation were associated with increased risk with odds ratios (OR) of 1.8 (p = 0.005), 1.72 (p = 0.013) and 3.25 (p = 0.003), respectively. Patients with hepatobiliary complications spent longer in the hospital than those without (27.7 × 19.3 days, respectively; p < 0.001). Among 210 patients with hepatobiliary complications, 28 died compared to 5 of 167 without complications (OR 4.98; p = 0.001). CONCLUSIONS: Hepatobiliary complications are frequent in patients undergoing BMT. There is a greater risk of their occurrence in women, people with pre-BMT liver alterations, and in haploidentical transplants. The occurrence of these complications increases the length of stay and is associated with a higher risk of death.


Assuntos
Doença Enxerto-Hospedeiro , Hepatite , Humanos , Feminino , Transplante de Medula Óssea/efeitos adversos , Estudos Transversais , Medula Óssea , Transplante Homólogo/efeitos adversos , Doença Enxerto-Hospedeiro/diagnóstico , Doença Enxerto-Hospedeiro/etiologia , Hepatite/complicações
10.
Rev. Ciênc. Plur ; 9(3): 33368, 26 dez. 2023. tab, graf
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1524292

RESUMO

Introdução:As Práticas Integrativas e Complementares em Saúde integram práticas e saberes milenares aos conhecimentos biomédicos ocidentais atuais. Dentro do Sistema Único de Saúde, especificamentena Atenção Primária, o principal local de atuação das referidas práticasé nas Unidades Básicas de Saúde.Objetivo:Avaliaro uso destas práticas nas Unidades Básicas do município de Mossoró/Rio Grande do Norte.Metodologia:Realizou-se um estudo descritivo transversal com abordagem quantitativa com gerentes de Unidades Básicas de Saúdede Mossoró. Foram utilizadosdoisquestionários: um para avaliar o conhecimento dos gerentes das Unidades Básicas acerca daspráticas integrativase outro para avaliar o seu usoe processo deimplementação. Os dados foram coletados através da aplicação dequestionários de forma online por meio da ferramenta Google Forms.Resultados:Vinte e três gerentesque,no estudo totalizou um percentual de 48,9%,responderamos questionários. A maioria dos entrevistados demonstrouconhecimentos sobreas Práticas,dasquaispodemos citar como sendoas mais conhecidas:acupuntura, meditação e fitoterapia. Apenas 17,4% das Unidades Básicas de Saúdeofertamas mesmas, sendo a fitoterapia a principal. A aplicação destasé realizada, majoritariamente,por enfermeiros, sendo saúde mental e dores musculares as indicações mais comuns. A falha na tentativa de implantação destas práticasfoi atribuídaà falta de capacitação profissional e recursos, enquanto a sua interrupçãose deudevidoà escassez de material e à pandemia da COVID-19. Conclusões:Este estudo encontrou uma baixa prevalência nas referidas práticasna cidade deMossoró. Destaca-se a necessidade de qualificação e capacitação dos profissionais da Atenção Primária à Saúdeem Práticas Integrativas e Complementares, bem como melhor gestão dos recursos para efetiva implementação no município, vistosua importância nos cuidados de saúde integral e prevenção de doenças (AU).


Introduction:Integrative and Complementary Health Practices integrate ancient practices and wisdom with current western biomedical knowledge. Within theUnified Health System, specifically in Primary Health Care, the main place where these practicesare applied is in Basic Health Units.Objective:To evaluate the use of these practicesin the Basic Units from the municipality of Mossoró/Rio Grande do Norte.Methodology:A cross-sectional and descriptive study with a quantitative approach was carried out with Basic Health Unit managers from Mossoró. Two questionnaires were used: one to assess the Basic Unit managers' knowledge aboutintegrative practices; and the other to evaluate their use and implementation process. The data were collected by applying questionnaires online using the Google Forms tool. Results:Twenty-three managers, who totaled a percentage of 48.9% in the study, answered the questionnaires. Most of the participants showed knowledge about the Practices, among which wecan mention the following as the best known: Acupuncture, Meditation and Herbal Medicine. Only 17.4% of the Basic Health Units offerthese practices, with Phytotherapy as the main one. Their application of these is mostly in charge of nurses, with mental health and muscle pain as the most common indications. Failure in the attempt to implement these practices was attributed to lack of professional training and resources, whereas their interruption was due to shortage of materials and to the COVID-19 pandemic.Conclusions:This study found a low prevalence of these practicesin the city of Mossoró. The need for qualification and training of thePrimary Health Care professionals inIntegrative and Complementary Practicesis highlighted, as well as better management of resources for effective implementation in the municipality, given their importance in terms of comprehensive health care and disease prevention (AU).


Introducción: Las Prácticas Integradoras y Complementarias de Salud integran prácticas y saberes milenarios con conocimientos biomédicos occidentales actuales. En el ámbito del Sistema Único de Salud, específicamente en Atención Primaria, el principal lugar en el que seaplican estas prácticasson las Unidades Básicas de Salud. Objetivo: Evaluar el uso de estas prácticas en Unidades Básicas delmunicipio de Mossoró/Rio Grande do Norte. Metodología: Se realizó un estudio descriptivo y transversal con enfoque cuantitativo con los gerentes de Unidades Básicas de Mossoró. Se utilizaron dos cuestionarios: uno para evaluar el conocimiento de los gerentesde Unidades Básicas sobre prácticas integradoras; y otro para evaluar su uso y proceso de implementación. Los datos se recopilaron aplicando los cuestionarios en línea a través de la herramienta Google Forms. Resultados: Veintitrésgerentesrespondieron los cuestionarios, que en el estudio sumaron un porcentaje del 48,9%. La mayoría de los entrevistados demostró conocimientos sobre las Prácticas, entre las que podemos mencionar como las más conocidas: Acupuntura, Meditación y Fitoterapia.Solo el 17,4% de las Unidades Básicas ofrecenestas prácticas, con Fitoterapia como la principal. En su mayoría, estas prácticas son aplicadas por enfermeras, con salud mental y dolores musculares como las indicaciones más habituales. El fracaso en el intento de implementar estas prácticas se atribuyó a falta de formación profesional y de recursos, mientras que su interrupción se debió a escasez de materiales y a la pandemia de COVID-19. Conclusiones: Este estudio detectóuna baja prevalencia de estas prácticas en la ciudad de Mossoró.Se destaca la necesidad de cualificación y formación de los profesionales de Atención Primaria de la Salud en Prácticas Integradorasy Complementarias, así como mejor gestión de los recursos para efectiva implementación en el municipio,dada su importancia para el cuidado de la salud integral y la prevención de enfermedades (AU).


Assuntos
Humanos , Masculino , Feminino , Atenção Primária à Saúde , Sistema Único de Saúde , Terapias Complementares , Conhecimentos, Atitudes e Prática em Saúde , Prática Integral de Cuidados de Saúde , Brasil/epidemiologia , Distribuição de Qui-Quadrado , Inquéritos e Questionários , Assistência Integral à Saúde
11.
Vaccine ; 41(42): 6366-6378, 2023 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-37704499

RESUMO

BACKGROUND: Although COVID-19 booster vaccination is widely recommended, there is limited long-term, population-level, real-world evidence on the magnitude of improved protection against severe COVID-19 conferred by boosting with monovalent COVID-19 vaccines developed against ancestral SARS-CoV-2, especially in low- or middle-income countries. We present interim results from the first large-scale assessment of the relative vaccine effectiveness (rVE) of first and second booster doses against severe COVID-19 in a low-/middle-income country. METHODS: REFORCO-Brazil is an ongoing, test-negative case-control study (NCT05697705) utilizing Brazil national severe acute respiratory syndrome (SARS) surveillance and vaccination data. In SARS hospitalizations from August 1, 2021 to July 31, 2022, we matched test-positive (via SARS-CoV-2 antigen/reverse transcription polymerase chain reaction [RT-PCR]) cases and test-negative case-controls (via RT-PCR) based on admission date, preceding vaccinations, and age. We evaluated the rVEs of four monovalent COVID-19 vaccines (AZD1222, Ad26.COV2.S, CoronaVac, and BNT162b2) as second boosters compared with any first boosters received ≥4 months previously, and as first boosters compared with primary-series vaccinations completed ≥4 months previously. RESULTS: The overall rVE of second boosters, from 5668 (2238 test-positive) evaluated hospitalizations, was 24.7 % (95 % confidence interval [CI]: 12.6-35.1); the overall rVE of first boosters, from 30,272 (12,063 test-positive) hospitalizations, was 46.8 % (95 % CI: 43.3-50.0). The rVEs of AZD1222 and BNT162b2 were similar: 29.4 % (95 % CI: 8.6-45.5) and 25.5 % (95 % CI: 4.2-42.2), respectively, for second boosters; and 42.5 % (95 % CI: 28.0-54.0) and 50.8 % (95 % CI: 47.5-54.0), respectively, for first boosters. In general, rVEs were higher in elderly (≥80 years) and immunocompromised/high-risk individuals. CONCLUSIONS: Our results support the use of AZD1222 and other adenoviral/mRNA vaccine boosters to maintain protection against COVID-19 hospitalization from Omicron subvariants, including in elderly and immunocompromised individuals at increased risk of accelerated waning or severe outcomes.

12.
Arq. bras. oftalmol ; 86(4): 375-379, July-Sep. 2023. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1447379

RESUMO

ABSTRACT We report the case of a 39-year-old male patient who presented with visual loss in the right eye for 6 weeks. The best-corrected visual acuity was counting fingers in the right eye and 20/30 in the left eye. The fundus examination demonstrated a right retinal detachment inferiorly extending to the fovea and a left macular serous detachment. After multimodal imaging study, the patient was diagnosed as having a bullous variant of central serous chorioretinopathy and treated with oral spironolactone associated with adjuvant laser photocoagulation. The retinal changes resolved after 6 months. The final visual acuity was 20/20 in both eyes.


RESUMO Relatamos o caso de um homem de 39 anos apresentando perda visual no olho direito há seis semanas. A melhor acuidade visual corrigida foi conta-dedos no olho direito e 20/30 no esquerdo. A fundoscopia demonstrou descolamento de retina direito inferiormente com extensão à fóvea e descolamento macular seroso à esquerda. Após estudos de imagem multimodal, o paciente foi diagnosticado com uma variante bolhosa de coriorretinopatia serosa central e tratado com espironolactona oral associada à fotocoagulação a laser adjuvante. As alterações retinianas resolveram após seis meses. A acuidade visual final foi 20/20 em ambos os olhos.

13.
Materials (Basel) ; 16(10)2023 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-37241337

RESUMO

Self-healing in asphalt mixtures is a property that can be enhanced by external heating, which causes a thermal expansion that increases the flow of bitumen with reduced viscosity through the cracks. Therefore, this study aims to evaluate the effects of microwave heating on the self-healing performance of three asphalt mixtures: (1) conventional, (2) with steel wool fibers (SWF), and (3) with steel slag aggregates (SSA) and SWF. After evaluating the microwave heating capacity of the three asphalt mixtures with a thermographic camera, their self-healing performance was determined with fracture or fatigue tests and microwave heating recovery cycles. The results demonstrated that the mixtures with SSA and SWF promoted higher heating temperatures and presented the best self-healing capacity during the semicircular bending test and heating cycles, with significant strength recovery after a total fracture. In contrast, the mixtures without SSA presented inferior fracture results. Both the conventional mixture and that containing SSA and SWF presented high healing indexes after the four-point bending fatigue test and heating cycles, with a fatigue life recovery of around 150% after applying two healing cycles. Therefore, the conclusion is that SSA greatly influences the self-healing performance of asphalt mixtures after microwave radiation heating.

14.
J Biophotonics ; 16(1): e202200185, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36054631

RESUMO

The increase of tissue transparency through sequential optical immersion clearing treatments and treatment reversibility have high interest for clinical applications. To evaluate the clearing reversibility in a broad spectral range and the magnitude of the transparency created by a second treatment, the present study consisted on measuring the spectral collimated transmittance of lung tissues during a sequence of two treatments with electronic cigarette (e-cig) fluid, which was intercalated with an immersion in saline. The saline immersion clearly reverted the clearing effect in the lung tissue in the spectral range between 220 and 1000 nm. By a later application of a second treatment with the e-cig fluid, the magnitude of the optical clearing effect was observed to be about the double as the one observed in the first treatment, showing that the molecules of the optical clearing agent might have converted some bound water into mobile water during the first treatment.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Água/metabolismo , Pulmão , Músculo Esquelético/metabolismo , Espalhamento de Radiação
15.
Spectrochim Acta A Mol Biomol Spectrosc ; 286: 122002, 2023 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-36274538

RESUMO

A fast calculation method was used to obtain the spectral optical properties of human normal and pathological (chromophobe renal cell carcinoma) kidney tissues. Using total transmittance, total reflectance and collimated transmittance spectra acquired from ex vivo kidney samples, the spectral optical properties of both tissues, namely the absorption, the scattering and the reduced scattering coefficients, as well as the scattering anisotropy, dispersion and light penetration depth, were calculated between 200 and 1000 nm. Analysis of the mean absorption coefficient spectra of the kidney tissues showed that both contain melanin and lipofuscin, and that 83 % of the melanin in the normal kidney converts into lipofuscin in the pathological kidney.


Assuntos
Lipofuscina , Melaninas , Humanos , Espalhamento de Radiação , Anisotropia , Rim
16.
Interface (Botucatu, Online) ; 27: e220280, 2023. ilus
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1405358

RESUMO

Este artigo analisa a execução do PMAQ-AB a partir de sua contextualização em um cenário político nacional de profundas transformações, desde o reformismo fraco que promoveu lenta extensão de direitos até o contrarreformismo forte da restauração neoliberal. Para debater os elementos relacionados ao trabalho e às disputas pela distribuição dos recursos públicos, foi realizado estudo de caso com trabalhadores, gestores e conselheiros de saúde em duas capitais do nordeste brasileiro. Os resultados evidenciam o acirramento do conflito distributivo e o resultado desfavorável aos trabalhadores no contexto pós-golpe parlamentar de 2016. As dinâmicas locais expõem processos de contração salarial e individualização das relações de trabalho e a reafirmação da meritocracia como justificativa ideológica da precarização. A isso, trabalhadores se contrapõem pela reafirmação de sua condição coletiva de classe, em favor de benefícios derivados do PMAQ, como recomposição salarial para todos.(AU)


Este artículo analiza la realización del PMAQ-AB a partir de su contextualización en un escenario político nacional de profundas transformaciones, desde el reformismo débil que promovió una lenta extensión de derechos contra el reformismo fuerte de la restauración neoliberal. Para discutir los elementos relacionados al trabajo y a las disputas por la distribución en los recursos públicos se realizó un estudio de caso con trabajadores, gestores y consejeros de salud en dos capitales del nordeste brasileño. Los resultados ponen en evidencia el recrudecimiento del conflicto distributivo y el resultado desfavorable para los trabajadores en el contexto post-golpe parlamentario de 2016. Las dinámicas locales exponen procesos de contracción salarial e individualización de las relaciones de trabajo y la reafirmación de la meritocracia como justificativa ideológica de la precarización. A eso se contraponen los trabajadores por medio de la reafirmación de su condición colectiva de clase, en favor del beneficio derivado del PMAQ con la recomposición salarial para todos.(AU)


This article analyzes the implementation of the Program for Improving Access and Quality of Primary Care (PMAQ-AB) in the context of a national political scenario of deep transformations, from the weak reformism that promoted slow extension of rights to the strong counter-reformism of neoliberal restoration. It is a case study with health workers, managers, and counselors in two capital cities in northeastern Brazil, discussing matters of work and distributive disputes of public resources. Results show the intensification of these conflicts in health and the unfavorable outcome for workers after the parliamentary coup in 2016 political context. Local dynamics expose the wage contraction and individualization of labor relations and the reassertion of meritocracy as an ideological ground for precariousness. Workers oppose this, reaffirming their collective class condition, favoring the benefit derived from PMAQ for fully regaining their group wages.(AU)

17.
Conexões (Campinas, Online) ; 21: e023010, 2023.
Artigo em Português | LILACS | ID: biblio-1561077

RESUMO

Introdução: Desde o início da Pandemia Covid-19 vários países adotaram o isolamento social (lockdown) como medida de contenção para diminuir a propagação do vírus e reduzir o risco de sobrecarga no sistema de saúde. A prática regular do exercício físico ao longo da pandemia poderia atenuar os prejuízos do isolamento e manter a saúde mental e bem-estar dos atletas. Objetivo: Avaliara associação entre os níveis de exercício físico e os níveis de saúde mental em atletas de basquete em cadeira de rodas durante o isolamento social. Métodos: Utilizamos um questionário online dividido em duas seções: avaliação da saúde mental e do nível de exercício físico. Resultados e Discussão: Pontuações mais baixas no questionário Short Form 36(SF-36)foram observadas nos domínios "vitalidade" com uma pontuação de 16, "limitação por aspectos emocionais" com pontuação de 55, "limitação por aspectos físicos" com pontuação de 62,5 seguido por "estado geral de saúde" com pontuação de 63.O questionário Physical Activity Scale for Individuals With Physical Disabilities (PASIPD) mostrou uma percepção baixa em relação ao nível de atividade física nas pessoas com deficiência. Conclusão: Os domínios de saúde geral com menor pontuações no lockdown foi "vitalidade" (16) e "aspectos emocionais" (55) e não foi observado associação forte entre os diferentes domínios da escala SF-36 e o nível de atividade física através da Escala PASIPD (p>0,005).


Introduction: Since the beginning of the Covid-19 pandemic, several countries have adopted social isolation (lockdown) as a containment measure to reduce the spread of the virus and the risk of overloading the health system. Regular physical exercise during the pandemic could mitigate the damage of isolation and maintain the mental health and well-being of wheelchair basketball athletes. Objective: To evaluate the association between physical exercise levels and mental health levels in wheelchair basketball athletes during social isolation. Methods: We used an online questionnaire divided into two sections: mental health assessment and physical exercise level assessment. Results and discussion: Lower scores on the Short Form 36 (SF-36) questionnaire were observed in the domains "vitality" with a score of 16, "limitation by emotional aspects" with a score of 55, "limitation by physical aspects" with a score of 62.5 followed by "general health status" with a score of 63. The Physical Activity Scale for Individuals with Physical Disabilities (PASIPD) showed a low perception of physical activity level in people with disabilities. Conclusion: The general health domains with lower scores in lockdown were "vitality" (16) and "emotional aspects" (55) and no strong association was observed between the different domains of the SF-36 scale and the level of physical activity through the PASIPD Scale (p>0.005).


Introducción: Desde el inicio de la pandemia de Covid-19, varios países han adoptado el aislamiento social (confinamiento) como medida de contención para reducir la propagación del virus y el riesgo de sobrecargar el sistema de salud. El ejercicio físico regular durante la pandemia podría mitigar el daño del aislamiento y mantener la salud mental y el bien estar de los atletas de baloncesto en silla de ruedas. Objetivo: Evaluar la asociación entre los niveles de ejercicio físico y los niveles de salud mental en los atletas de baloncesto en silla de ruedas durante el aislamiento social. Métodos: Utilizamos um cuestionario en línea dividido en dos secciones: evaluación de la salud mental y evaluación del nivel de ejercicio físico. Resultados y discusión: Se observaron puntuaciones más bajas en el cuestionario Short Form 36 (SF-36) en los dominios "vitalidad" con una puntuación de 16, "limitación por aspectos emocionales" con una puntuación de 55, "limitación por aspectos físicos" con una puntuación de 62,5 seguido de "estado general de salud" con una puntuación de 63. La Escala de Actividad Física para Personas com Discapacidad Física (PASIPD) mostró una baja percepción del nivel de actividad física en las personas com discapacidad. Conclusión: Los domínios generales de salud com puntuaciones más bajas en el confinamento fueron "vitalidad" (16) y "aspectos emocionales" (55) y no se observó una Asociación fuerte entre los diferentes dominios de la escala SF-36 y el nivel de actividad física a través de la Escala PASIPD (p>0,005).


Assuntos
Humanos , Bem-Estar Psicológico
18.
Arq. bras. oftalmol ; 85(3): 297-300, May-June 2022. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1383806

RESUMO

ABSTRACT Combined hamartoma of the retina and retinal pigment epithelium is a rare, benign intraocular tumor. Hamartoma of the retina and retinal pigment epithelium has been described in the literature as a condition presenting with variable retinal damage, ranging from partial epiretinal involvement to complete distortion of the retinal layers and retinal pigment epithelium. We report the case of an 8-year-old girl presenting with longstanding strabismus who was diagnosed with Hamartoma of the retina and retinal pigment epithelium based on multimodal imaging assessment. We explored the particular imaging findings from studies using spectral-domain optical coherence tomography, fundus autofluorescence, optical coherence tomography angiography, and fluorescein angiography.


RESUMO O hamartoma combinado de retina e epitélio pigmentar da retina consiste em um tumor intraocular raro com comportamento benigno. O hamartoma combinado de retina e epitélio pigmentar da retina foi descrito na literatura apresentando dano retiniano variável, desde o envolvimento epirretiniano parcial até distorção completa das camadas retinianas e do epitélio pigmentar da retina. Relatamos o caso de uma menina de 8 anos com estrabismo de longa data que foi diagnosticada com hamartoma combinado de retina e epitélio pigmentar da retina, com base na avaliação de imagem multimodal. Exploramos os achados de imagem específicos de estudos usando tomografia de coerência óptica de domínio espectral, autofluorescência, angiografia por tomografia de coerência óptica e angiografia fluorescente.

19.
Arq Bras Oftalmol ; 85(3): 297-300, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34431902

RESUMO

Combined hamartoma of the retina and retinal pigment epithelium is a rare, benign intraocular tumor. Hamartoma of the retina and retinal pigment epithelium has been described in the literature as a condition presenting with variable retinal damage, ranging from partial epiretinal involvement to complete distortion of the retinal layers and retinal pigment epithelium. We report the case of an 8-year-old girl presenting with longstanding strabismus who was diagnosed with Hamartoma of the retina and retinal pigment epithelium based on multimodal imaging assessment. We explored the particular imaging findings from studies using spectral-domain optical coherence tomography, fundus autofluorescence, optical coherence tomography angiography, and fluorescein angiography.


Assuntos
Hamartoma , Doenças Retinianas , Criança , Epitélio/patologia , Feminino , Angiofluoresceinografia , Hamartoma/complicações , Hamartoma/diagnóstico por imagem , Humanos , Imagem Multimodal , Retina/patologia , Doenças Retinianas/patologia , Epitélio Pigmentado da Retina/diagnóstico por imagem , Epitélio Pigmentado da Retina/patologia , Tomografia de Coerência Óptica/métodos
20.
Cells ; 10(11)2021 11 02.
Artigo em Inglês | MEDLINE | ID: mdl-34831210

RESUMO

Lung organogenesis is a highly coordinated process governed by a network of conserved signaling pathways that ultimately control patterning, growth, and differentiation. This rigorously regulated developmental process culminates with the formation of a fully functional organ. Conversely, failure to correctly regulate this intricate series of events results in severe abnormalities that may compromise postnatal survival or affect/disrupt lung function through early life and adulthood. Conditions like congenital pulmonary airway malformation, bronchopulmonary sequestration, bronchogenic cysts, and congenital diaphragmatic hernia display unique forms of lung abnormalities. The etiology of these disorders is not yet completely understood; however, specific developmental pathways have already been reported as deregulated. In this sense, this review focuses on the molecular mechanisms that contribute to normal/abnormal lung growth and development and their impact on postnatal survival.


Assuntos
Pneumopatias/congênito , Pulmão/embriologia , Transdução de Sinais , Padronização Corporal , Humanos , Pulmão/anormalidades , Pneumopatias/embriologia , Modelos Biológicos
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