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1.
Bioorg Med Chem Lett ; 110: 129876, 2024 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-38964519

RESUMEN

In this study, we present the design, synthesis, and cytotoxic evaluation of a series of benzimidazole N-acylhydrazones against strains of T. cruzi (Y and Tulahuen) and Leishmania species (L. amazonensis and L. infantum). Compound (E)-N'-((5-Nitrofuran-2-yl)methylene)-1H-benzo[d]imidazole-2-carbohydrazide demonstrated significant activity against both trypomastigote and amastigote forms (Tulahuen strain), with an IC50/120 h of 0.033 µM and a selectivity index (SI) of 7680. This represents a potency 46 times greater than that of benznidazole (IC50/120 h = 1.520 µM, SI = 1390). Another compound (E)-N'-(2-Hydroxybenzylidene)-1H-benzo[d]imidazole-2-carbohydrazide showed promising activity against both trypomastigote and amastigote forms (Tulahuen strain), with an IC50/120 h of 3.600 µM and an SI of 14.70. However, its efficacy against L. infantum and L. amazonensis was comparatively lower. These findings provide valuable insights for the development of more effective treatments against Trypanosoma cruzi.


Asunto(s)
Bencimidazoles , Hidrazonas , Leishmania infantum , Trypanosoma cruzi , Trypanosoma cruzi/efectos de los fármacos , Hidrazonas/farmacología , Hidrazonas/química , Hidrazonas/síntesis química , Relación Estructura-Actividad , Leishmania infantum/efectos de los fármacos , Bencimidazoles/farmacología , Bencimidazoles/química , Bencimidazoles/síntesis química , Estructura Molecular , Pruebas de Sensibilidad Parasitaria , Relación Dosis-Respuesta a Droga , Leishmania/efectos de los fármacos , Tripanocidas/farmacología , Tripanocidas/síntesis química , Tripanocidas/química , Antiprotozoarios/farmacología , Antiprotozoarios/síntesis química , Antiprotozoarios/química , Animales
4.
Acta Trop ; 256: 107264, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38806090

RESUMEN

Chagas disease (CD), caused by the flagellated protozoan Trypanosoma cruzi (T. cruzi), affects approximately 7 million people worldwide and is endemic in Latin America, especially among socioeconomically disadvantaged populations. Since the 1960s, only two drugs have been commercially available for treating this illness: nifurtimox (NFX) and benznidazole (BZN). Although these drugs are effective in the acute phase (AP) of the disease, in which parasitemia is usually high, their cure rates in the chronic phase (CP) are low and often associated with several side effects. The CP is characterized by a subpatent parasitaemia and absence of clinical symptoms in the great majority of infected individuals. However, at least 30 % of the individuals will develop potentially lethal symptomatic forms, including cardiac and digestive manifestations. For such reason, in the CP the treatment is usually symptomatic and typically focuses on managing complications such as arrhythmias, heart failure, or digestive problems. Therefore, the need for new drugs or therapeutic approaches using BZN or NFX is extremely urgent. This review presents the main clinical trials, especially in the CP, which involve BZN and NFX in different treatment regimens. Additionally, other therapies using combinations of these drugs with other substances such as allopurinol, itraconazole, ravuconazole, ketoconazole, posaconazole and amiodarone are also reported. The importance of early diagnosis, especially in pediatric patients, is also discussed, emphasizing the need to identify the disease in its early stages to improve the chances of successful treatment.


Asunto(s)
Enfermedad de Chagas , Nifurtimox , Nitroimidazoles , Tripanocidas , Trypanosoma cruzi , Enfermedad de Chagas/tratamiento farmacológico , Humanos , Nitroimidazoles/uso terapéutico , Trypanosoma cruzi/efectos de los fármacos , Tripanocidas/uso terapéutico , Nifurtimox/uso terapéutico , Enfermedad Crónica
5.
Artículo en Inglés | MEDLINE | ID: mdl-38791749

RESUMEN

BACKGROUND: Tuberculosis has been considered a global emergency since 1993, and controlling it has become even more challenging since 2020 due to the health and social crisis resulting from the COVID-19 pandemic. This study aimed to identify the impact of the COVID-19 pandemic on tuberculosis case detection activities within primary health Care in the largest city in Brazil. METHODS: This is a cross-sectional and analytical study on the provision of tuberculosis detection actions in primary healthcare units during the pandemic period. A descriptive analysis was performed for characterization, and Generalized Mixed Models were used for evaluating associations, with a Bonferroni post hoc test applied. RESULTS: The study sample comprised 80 health units in the municipality. There was a moderate alteration level in the provision of consultations for individuals with signs and symptoms of tuberculosis in 2020 (13.8%) and in 2021 (15.1%). Statistical significance (p < 0.05) was found between the pandemic period and detection actions, with a lower alteration level in 2022. CONCLUSIONS: Tuberculosis detection activities underwent changes due to the COVID-19 pandemic, mainly in 2020, which was associated with alterations in consultation and case notification provision.


Asunto(s)
COVID-19 , Atención Primaria de Salud , Tuberculosis , COVID-19/epidemiología , Humanos , Atención Primaria de Salud/estadística & datos numéricos , Brasil/epidemiología , Estudios Transversales , Tuberculosis/epidemiología , Tuberculosis/diagnóstico , SARS-CoV-2 , Pandemias
6.
Front Vet Sci ; 11: 1325198, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38605925

RESUMEN

Feed additives such as monensin (MON) and virginiamycin (VM) are commonly utilized in feedlot diets to enhance rumen fermentation. Nevertheless, the precise effects of combining MON and VM during specific feedlot periods and the advantages of this combination remain unclear. This study was designed to investigate the effects of withdrawal of MON when associated with VM during the adaptation and finishing periods on ruminal metabolism, feeding behavior, and nutrient digestibility in Nellore cattle. The experimental design was a 5 × 5 Latin square, where each period lasted 28 days. Five rumen-cannulated Nellore yearling bulls were used (414,86 ± 21,71 kg of body weight), which were assigned to five treatments: (1) MON during the entire feeding period; (2) VM during the entire feeding period; (3) MON + VM during the adaptation period and only VM during the finishing period 1 and 2; (4) MON + VM during the entire feeding period; (5) MON + VM during the adaptation and finishing period 1 and only VM during the finishing period 2. For the finishing period 1, animals fed T3 had improved potential degradability of dry matter (p = 0.02). Cattle fed T3 and T5 had the highest crude protein degradability when compared to animals receiving T2 (p = 0.01). Animals fed T2 and T3 had reduced the time (p < 0.01) and area under pH 6.2 (p = 0.02). Moreover, animals fed T4 had greater population of protozoa from the genus Diplodinium (p = 0.04) when compared to those from animals fed T2, T3 and T5. For the finishing period 2, animals fed T3 had greater starch degradability when compared to animals receiving T4 and T5 (p = 0.04). Animals fed T3, T4 and T5 had increased the duration of time in which pH was below 5.6 (p = 0.03). The area under the curve for ruminal pH 5.2 and pH 5.6 was higher for the animals fed T3 (p = 0.01), and the area under pH 6.2 was higher for the animals fed T3 and T5 (p < 0.01) when compared to animals receiving T2. There is no substantial improvement on the rumen fermentation parameters by the concurrent utilization of MON and VM molecules, where the higher starch and protein degradability did not improve the rumen fermentation.

7.
Biomed Rep ; 20(3): 48, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38357238

RESUMEN

The chemistry of pure cerium oxide (CeO2-x) nanoparticles has been widely studied since the 1970s, especially for chemical catalysis. CeO2-x nanoparticles have been included in an important class of industrial metal oxide nanoparticles and have been attributed a range of wide applications, such as ultraviolet absorbers, gas sensors, polishing agents, cosmetics, consumer products, high-tech devices and fuel cell conductors. Despite these early applications in the field of chemistry, the biological effects of CeO2-x nanoparticles were only explored in the 2000s. Since then, CeO2-x nanoparticles have gained a spot in research related to various diseases, especially the ones in which oxidative stress plays a part. Due to an innate oxidation state variation on their surface, CeO2-x nanoparticles have exhibited redox activities in diseases, such as cancer, acting either as an oxidizing agent, or as an antioxidant. In biological models, CeO2-x nanoparticles have been shown to modulate cancer cell viability and, more recently, cell death pathways. However, a deeper understanding on how the chemical structure of CeO2-x nanoparticles (including nanoparticle size, shape, suspension, agglomeration in the medium used, pH of the medium, type of synthesis and crystallite size) influences the cellular effects observed remains to be elucidated. In the present review, the chemistry of CeO2-x nanoparticles and their impact on biological models and modulation of cell signalling, particularly focusing on oxidative and cell death pathways, were investigated. The deeper understanding of the chemical activity of CeO2-x nanoparticles may provide the rationale for further biomedical applications towards disease treatment and drug delivery purposes.

8.
Trauma Violence Abuse ; 25(1): 327-340, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-36747372

RESUMEN

Health professionals play a significant role in identifying and reporting child physical abuse (CPA). However, several studies have pointed out non-reporting behavior among these professionals, evidencing difficulties identifying and reporting suspected cases. This review aimed to explore the frequency and possible barriers in identifying and reporting CPA by health professionals worldwide and to identify associated factors. This scoping review was conducted in the Pubmed, Web Of Science, Scopus, and SciELO databases between July 2019 and December 2020. Analytical and qualitative observational epidemiological studies were selected and published in English, Portuguese, and Spanish, with data on the identification and/or reporting of CPA by health professionals. Twenty studies fulfilled the criteria of this review. The studies were conducted with dentists, nurses, pediatricians, and general practitioners. The frequency of identification of CPA ranged from 50% to 89%, while the frequency of reporting ranged from 8% to 47%. This review revealed that health professionals had a low frequency of reporting of CPA, especially for dentists. In addition, several associated factors and barriers in the identification and reporting of CPA were identified in the studies. These were discussed in five main themes: training and continuing education in CPA, impact on professional practice, experiences and perceptions about child protection services, the threshold for suspicion of the professional, and the professional category.


Asunto(s)
Maltrato a los Niños , Abuso Físico , Humanos , Niño , Maltrato a los Niños/diagnóstico , Personal de Salud , Notificación Obligatoria , Actitud del Personal de Salud
9.
Trab. Educ. Saúde (Online) ; 22: e02827248, 2024.
Artículo en Portugués | LILACS | ID: biblio-1560602

RESUMEN

RESUMO: Neste texto celebram-se as ideias e o legado do educador Carlos Rodrigues Brandão, falecido, infelizmente, no dia 12 de julho de 2023. Para homenagear Brandão, optou-se por tomar como base a obra intitulada O educador: vida e morte, que completou 42 anos e serviu como inspiração ao título deste texto. Por certo, a distância do tempo não apaga o espírito do educador de vocação amorosa e libertária. Brandão era implacável ao tecer críticas às injustiças sociais, ao mesmo tempo que indicava saídas cotidianas para o trabalho educativo de cariz emancipatório. O pensamento de Brandão não feneceu; poético e divertido, permanece vivo e a florescer entre nós. Como na reflexão de Rubem Alves (1983, p. 17): "E o educador, morreu? Educadores são como as velhas árvores. Possuem uma face, um nome, uma estória a ser contada".


ABSTRACT: This text celebrates the ideas and legacy of educator Carlos Rodrigues Brandão, who unfortunately died on July 12, 2023. To honor Brandão, we chose to take as a basis the work entitled O educador: vida e morte (The Educator: Life and Death), which completed 42 years and served as inspiration for the title of this text. Indeed, the distance of time does not erase the educator's spirit of a loving and libertarian vocation. Brandão ruthlessly criticized social injustices while indicating daily outlets for emancipatory educational work. Brandão's thought has not withered; poetic and amusing, it remains alive and flourishing among us. As in the reflection of Rubem Alves (1983, p. 17): "And the educator, did he die? Educators are like old trees. They have a face, a name, a story to be told."


RESUMEN: Este texto celebra las ideas y el legado del educador Carlos Rodrigues Brandão, fallecido lamentablemente el 12 de julio de 2023. Para homenajear a Brandão, optamos por basarnos en la obra titulada O educador: vida e morte (El educador: vida y muerte), que cumple 42 años y sirvió de inspiración para el título de este texto. Por supuesto, la distancia del tiempo no borra el espíritu del educador con vocación amorosa y humanitaria. Brandão fue implacable en su crítica a las injusticias sociales, al tiempo que apuntaba soluciones cotidianas para un trabajo educativo emancipador. El pensamiento de Brandão no ha muerto; poético y divertido, permanece vivo y floreciente entre nosotros. Como reflexiona Rubem Alves (1983, p. 17): "Y el educador, ¿está muerto? Los educadores son como árboles ancianos. Tienen un rostro, un nombre, una historia que contar".


Asunto(s)
Educación , Enseñanza
10.
Front Vet Sci ; 10: 1089903, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37065251

RESUMEN

Feedlot cattle are usually adapted to high-concentrate diets containing sodium monensin (MON) in more than 14 days. However, considering that the dry matter intake DMI is usually lower during adaptation when compared to the finishing period, the use of MON during adaptation may decrease even further the DMI, and virginiamycin (VM) may be an alternative. This study was designed to investigate the effects of shortening the adaptation length from 14 to 9 or 6 days on ruminal metabolism, feeding behavior, and nutrient digestibility of Nellore cattle fed high-concentrate diets containing only VM as the sole feed additive. The experimental design was a 5 × 5 Latin square, where each period lasted 21 days. Five 17 mo-old Nellore yearling bulls were used (415 ± 22 kg of body weight), which were assigned to five treatments: (1) MON (30 mg/kg) and adaptation for 14 days; (2) MON (30 mg/kg) + VM (25 mg/kg) and adaptation for 14 days; (3) VM (25 mg/kg) and adaptation for 14 days; (4) VM (25 mg/kg) and adaptation for 9 days, and (5) VM (25 mg/kg) and adaptation for 6 days. A quadratic effect for adaptation length when only VM was fed was observed for mean pH (P = 0.03), duration of pH below 5.2 (P = 0.01) and 6.2 (P = 0.01), where cattle consuming VM adapted for 9 days had higher mean pH and shorter period of pH below 5.2 and 6.2. Cattle that consumed only MON had a lower concentration of butyrate (P = 0.02) and a higher concentration of propionate (P = 0.04) when compared to those consuming VM and adapted for 14 days. As the adaptation length decreased for animals consuming only VM, the rumen degradability of dry matter (P < 0.01), neutral detergent fiber (P < 0.01), and starch (P < 0.01) decreased; however, protozoa numbers of Entodinium and total protozoa increased. It is not recommended to shorten the adaptation length of these animals to either 6 or 9 days without negatively impacting nutrient disappearance and ruminal fermentation patterns.

11.
Front Vet Sci ; 10: 1067434, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36761886

RESUMEN

Feed additives such as monensin (MON) and virginiamycin (VM) are widely used in feedlots diets to maximize rumen fermentation. However, the knowledge about the effects of MON and VM combinations in specifics feedlot periods and the benefits of this association are still unclear. This study aimed to evaluate the effects of withdrawal of MON when associated with VM during the adaptation and finishing periods on feedlot performance of Nellore cattle. The experiment was designed as a completely randomized block replicated six times (four animals/pen) in which 120 Nellore bulls (378.4 ± 24.4 kg) were allocated in 30 pens and fed for 112 days according to the following treatments: (T1) MON during the entire feeding period; (T2) VM during the entire feeding period; (T3) MON+VM during the adaptation period and only VM during the finishing period 1 and 2; (T4) MON+VM during the entire feeding period; (T5) MON+VM during the adaptation and finishing period 1 and only VM during the finishing period 2. After 112 days on feed, no treatment effect was observed for DMI (P ≥ 0.12). However, bulls fed T5 had greater (P = 0.05) final BW and ADG when compared to T1, T2, and T4. Cattle from T3 and T5 groups presented heavier HCW (P = 0.05) than that fed T1, T2, and T4. Nellore bulls fed T1 and T5 had lower (P < 0.01) DMI variation than those receiving T2. The withdrawal of MON when associated with VM during the final third of the feedlot period improved overall final BW, ADG, and HCW when compared to bulls fed either MON or VM, but did not positively impact feedlot performance when compared to cattle that had MON withdrawn at the end of the adaptation period.

12.
Nat Microbiol ; 8(1): 135-149, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36604511

RESUMEN

Aedes aegypti and A. albopictus mosquitoes are the main vectors for dengue virus (DENV) and other arboviruses, including Zika virus (ZIKV). Understanding the factors that affect transmission of arboviruses from mosquitoes to humans is a priority because it could inform public health and targeted interventions. Reasoning that interactions among viruses in the vector insect might affect transmission, we analysed the viromes of 815 urban Aedes mosquitoes collected from 12 countries worldwide. Two mosquito-specific viruses, Phasi Charoen-like virus (PCLV) and Humaita Tubiacanga virus (HTV), were the most abundant in A. aegypti worldwide. Spatiotemporal analyses of virus circulation in an endemic urban area revealed a 200% increase in chances of having DENV in wild A. aegypti mosquitoes when both HTV and PCLV were present. Using a mouse model in the laboratory, we showed that the presence of HTV and PCLV increased the ability of mosquitoes to transmit DENV and ZIKV to a vertebrate host. By transcriptomic analysis, we found that in DENV-infected mosquitoes, HTV and PCLV block the downregulation of histone H4, which we identify as an important proviral host factor in vivo.


Asunto(s)
Aedes , Arbovirus , Virus del Dengue , Dengue , Virus de Insectos , Virus ARN , Infección por el Virus Zika , Virus Zika , Animales , Humanos , Virus Zika/genética , Virus de Insectos/fisiología , Virus del Dengue/genética , Mosquitos Vectores , Arbovirus/genética
13.
Ciênc. Saúde Colet. (Impr.) ; 27(9): 3669-3678, set. 2022. tab
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1394230

RESUMEN

Abstract This study evaluated the association between religiosity and binge drinking in early adolescence. A cross-sectional study was conducted with adolescents aged 10-13 from Belo Horizonte, Brazil. Stratified random sampling was performed considering the administrative district and school year. Adolescents filled an AUDIT-C form, containing questions about religiosity and binge drinking by parents and their best friends. Adolescents' caregivers answered a form regarding socioeconomic issues. Descriptive analysis, univariate, and multivariate logistic regression were performed. A total of 650 adolescents participated in the study. The frequency of binge drinking was 13.7%. In the adjusted model, religiosity was not associated with binge drinking. The covariates associated were the age of 12-13 years (OR: 1.94; CI95%: 1.06-3.56; p=0.030), maternal binge drinking (OR: 3.12; CI95%: 1.76-5.52; p<0.001) best friend binge drinking (OR: 6.01; CI95%: 3.40-10.62; p<0.001) and nonnuclear family (OR: 1.80; CI95%: 1.01-3.23; p=0.045). The findings revealed that, for binge drinking, the main factors that influenced this decision were the best friend and maternal binge drinking and family structure, although the adolescents claimed to be religious.


Resumo O objetivo do estudo foi avaliar a associação entre religiosidade e binge drinking no início da adolescência. Um estudo transversal realizado com adolescentes de 10 a 13 anos de Belo Horizonte, Brasil. Foi realizada uma amostragem aleatória estratificada considerando distrito administrativo e ano escolar. Os adolescentes preencheram um formulário com o AUDIT C, perguntas sobre religiosidade e perguntas sobre binge drinking pelos pais e melhor amigo. Um formulário sobre questões socioeconômicas foi respondido pelos responsáveis. Foi realizada análise descritiva, regressão logística univariada e multivariada. Participaram do estudo 650 adolescentes. A frequência de binge drinking foi de 13,7%. No modelo ajustado, a religiosidade não esteve associada ao binge drinking. As covariáveis associadas foram idade de 12-13 anos (OR: 1,94 IC95%: 1,06-3,56; p=0,030), binge drinking pela mãe (OR: 3,12; IC95%: 1,76-5,52; p<0,001) binge drinking pelo melhor amigo (OR: 6,01; IC95%: 3,40-10,62; p<0,001) e família não nuclear (OR: 1,80; IC95%: 1,01-3,23; p=0,045). Os achados revelaram que apesar dos adolescentes afirmarem serem religiosos, para o binge drinking, os principais fatores que influenciaram essa decisão foi o binge drinking pelo melhor amigo, mãe e família não nuclear.

14.
Cien Saude Colet ; 27(9): 3669-3678, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36000653

RESUMEN

This study evaluated the association between religiosity and binge drinking in early adolescence. A cross-sectional study was conducted with adolescents aged 10-13 from Belo Horizonte, Brazil. Stratified random sampling was performed considering the administrative district and school year. Adolescents filled an AUDIT-C form, containing questions about religiosity and binge drinking by parents and their best friends. Adolescents' caregivers answered a form regarding socioeconomic issues. Descriptive analysis, univariate, and multivariate logistic regression were performed. A total of 650 adolescents participated in the study. The frequency of binge drinking was 13.7%. In the adjusted model, religiosity was not associated with binge drinking. The covariates associated were the age of 12-13 years (OR: 1.94; CI95%: 1.06-3.56; p=0.030), maternal binge drinking (OR: 3.12; CI95%: 1.76-5.52; p<0.001) best friend binge drinking (OR: 6.01; CI95%: 3.40-10.62; p<0.001) and nonnuclear family (OR: 1.80; CI95%: 1.01-3.23; p=0.045). The findings revealed that, for binge drinking, the main factors that influenced this decision were the best friend and maternal binge drinking and family structure, although the adolescents claimed to be religious.


Asunto(s)
Consumo Excesivo de Bebidas Alcohólicas , Adolescente , Consumo de Bebidas Alcohólicas/epidemiología , Consumo Excesivo de Bebidas Alcohólicas/epidemiología , Brasil/epidemiología , Estudios Transversales , Humanos , Factores Socioeconómicos
15.
Einstein (Sao Paulo) ; 20: eRC6889, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35976354

RESUMEN

Lymphoceles are collections of lymphatic fluid, mainly caused by major surgical approaches. Most lymphoceles are asymptomatic and limited, but some cases may require a medical management. Among the different techniques, transafferent nodal embolization has emerged as a minimally invasive option, with low morbidity and high resolubility, although it is not widespread in the Brazilian scenario. In this study, we report a case of lymphocele drained percutaneously, with maintenance of high output and requiring transafferent nodal embolization.


Asunto(s)
Embolización Terapéutica , Linfocele , Brasil , Drenaje , Embolización Terapéutica/métodos , Humanos , Linfocele/diagnóstico por imagen , Linfocele/etiología , Linfocele/terapia , Complicaciones Posoperatorias
16.
Animals (Basel) ; 12(7)2022 Mar 24.
Artículo en Inglés | MEDLINE | ID: mdl-35405810

RESUMEN

The objective of this study was to examine the relationships among ruminal microbial community, rumen morphometrics, feeding behavior, feedlot performance, and carcass characteristics of Nellore cattle, classified by residual feed intake (RFI). Twenty-seven Nellore yearling bulls with an initial body weight (BW) of 423.84 ± 21.81 kg were fed in feedlot for 107 d in individual pens to determine the RFI phenotype. Bulls were categorized as high RFI (>0.5 SD above the mean, n = 8), medium RFI (±0.5 SD from the mean, n = 9), and low RFI (<0.5 SD below the mean, n = 10). At harvest, whole rumen content samples were collected from each bull to evaluate ruminal microbial community, including bacteria and protozoa. The carcass characteristics were determined by ultrasonography at the beginning and at the end of the experimental period, and behavior data were collected on d 88. As a result of ranking Nellore bulls by RFI, cattle from low-RFI group presented lesser daily dry matter intake (DMI), either in kilograms (p < 0.01) or as percentage of BW (p < 0.01) than high-RFI yearling bulls, resulting in improved gain:feed (G:F). However, variables, such as average daily gain (ADG), final BW, hot carcass weight (HCW) and other carcass characteristics did not differ (p > 0.05) across RFI groups. The eating rate of either dry matter (DM )(p = 0.04) or neutral detergent fiber (NDF) (p < 0.01) was slower in medium-RFI yearling bulls. For ruminal morphometrics an RFI effect was observed only on keratinized layer thickness, in which a thinner layer (p = 0.04) was observed in low-RFI Nellore yearling bulls. Likewise, Nellore yearling bulls classified by the RFI did not differ in terms of Shannon's diversity (p = 0.57) and Chao richness (p = 0.98). Our results suggest that the differences in feed efficiency of Nellore bulls differing in phenotypic RFI should be attributed to metabolic variables other than ruminal microorganisms and epithelium, and deserves further investigation.

17.
Einstein (Sao Paulo) ; 20: eRC6570, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35416835

RESUMEN

Spontaneous renal artery dissection is an unusual and idiopathic condition in most cases. In young, mildly symptomatic patients, diagnosis may be difficult, frequently culminating in delay in treatment. This report presents the case of a 40-year-old male patient, with severe hypertension of sudden onset, and difficult management of oral medication. In etiological investigation, Echo-Doppler of renal arteries showed signs of hemodynamically relevant right renal artery stenosis. Arteriography showed presence of double-lumen and thrombus in the vessel lumen, indicating dissection. The proposed treatment was endovascular approach after failure of isolated medical treatment, option which included the aspiration of the thrombus by Penumbra System® device and balloon angioplasty, followed by right renal artery stenting. Improvement of immediate sonographic control of peak systolic velocity and renal-aortic ratio was shown, with a consequent reduction of systemic arterial blood pressure and stabilization of renal function. Within the following year, the patient presented in-stent stenosis and was successfully treated with balloon angioplasty.


Asunto(s)
Obstrucción de la Arteria Renal , Arteria Renal , Adulto , Angioplastia , Femenino , Estudios de Seguimiento , Humanos , Masculino , Arteria Renal/diagnóstico por imagen , Arteria Renal/cirugía , Obstrucción de la Arteria Renal/diagnóstico por imagen , Obstrucción de la Arteria Renal/cirugía , Stents , Resultado del Tratamiento
18.
Saúde debate ; 46(132): 240-251, jan.-mar. 2022.
Artículo en Portugués | LILACS-Express | LILACS | ID: biblio-1361150

RESUMEN

RESUMO A pandemia do novo coronavírus afetou a dinâmica do cotidiano escolar, obrigando os(as) professores(as) a um movimento de adaptação para dar conta das demandas impostas pelo distanciamento social. Esse cenário também atingiu as pesquisas, cujas técnicas de coletas de dados se davam de maneira presencial e tiveram que ser realizadas remotamente. O objetivo deste texto é descrever a trajetória da Comunidade Ampliada de Pesquisa, adaptada para o ambiente virtual (CAP on-line), como parte da pesquisa que buscou examinar as novas exigências do ensino remoto e suas implicações para a saúde dos(as) professores(as). Foram realizadas três oficinas com a participação de professores(as) do Ensino Fundamental e Médio. Observou-se que o processo de pesquisa tem correlações com os próprios resultados do estudo, especialmente no que se refere aos novos aprendizados trazidos pelo ensino remoto. Conclui-se que o compartilhamento de experiências de trabalho por meio da CAP on-line é uma possibilidade. No entanto, o aperfeiçoamento nos modos de interação virtual, o domínio do aparato tecnológico e o acesso a equipamentos de qualidade são elementos a serem observados para o aperfeiçoamento dessa abordagem coletiva de investigação.


ABSTRACT The new Coronavirus pandemic has affected the dynamics of everyday school life, forcing teachers to adapt to the demands imposed by social distancing. This scenario also involved the surveys, whose data collection techniques took place in person and had to be carried out remotely. This text aims to describe the trajectory of the expanded research community, adapted to the virtual format, as part of the research that sought to examine the new requirements of remote teaching and its implications for teachers' health. Three workshops were held with the participation of elementary and high school teachers. It was observed that the research process has correlations with the results of the study, especially concerning new learning brought by remote learning. It is concluded that sharing work experiences through online CAP is a possibility. However, the improvement in the modes of virtual interaction, mastery of the technological apparatus, and access to quality equipment are elements to be observed in order to improve this collective approach to investigation.

19.
Sci Total Environ ; 803: 149883, 2022 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-34525753

RESUMEN

Mining has been described as an important source of contaminants to the coastal zone worldwide, which is greatly intensified in the case of tailing dam ruptures. This study assessed the environmental quality of the marine coastal area impacted by a mining disaster (Fundão Mine dam collapse on 05 November 2015, Southeast Brazil) by applying a geochemical multi-index and physical approach over 18 months (from October 2018 to March 2020). Nutrients, metal(oid)s and Polycyclic Aromatic Hydrocarbons (PAHs) were integrated by quality indexes: Canadian Council of Ministers of the Environment Water Quality Index (CWQI) and the Pollution Load Index (PLI) for water quality; Sediment Quality Guideline Quotients (SQG-q metal(oid)s and SQG-q PAHs) for sediment quality. Three scenarios regarding river discharge and wave-heights (Hs) were considered: 2018/2019-wet, 2019-dry, 2019/2020-wet. An Environmental Risk Assessment framework was built to describe the overall environmental quality in regards to water and sediment quality indexes as well as physical conditions. Here we show that the worsening of environmental quality is highly associated with the decrease of water quality by metal(oid)s (total forms of As and Ni; dissolved forms of Co and Fe) during the 2019-dry scenario when river discharge was at the lowest and the highest Hs occurred. Resuspension of fine sediment and suspended Fe(III) oxy-hydroxide nanoparticles by waves seem to be the main processes for releasing metal(oid)s into the water column. CWQI and PLI showed marginal and polluted conditions for water quality, respectively, and SQG-q for metals and PAHs indicated moderate impact in the sediment during the 2019-dry period. Toxicity to pelagic and benthic fauna is expected to occur in those conditions. Recovery of environmental quality occurred during the 2019/2020-wet scenario, which could be explained by alongshore and offshore transport of sediment and the dilution of aqueous metal(oid)s by intense river discharge on the continental shelf.


Asunto(s)
Metales Pesados , Contaminantes Químicos del Agua , Canadá , Monitoreo del Ambiente , Compuestos Férricos , Sedimentos Geológicos , Metales Pesados/análisis , Ríos , Contaminantes Químicos del Agua/análisis
20.
Interface (Botucatu, Online) ; 26: e210318, 2022.
Artículo en Portugués | LILACS | ID: biblio-1356351

RESUMEN

O objetivo principal do presente artigo consiste em problematizar aspectos do processo de trabalho de professore(a)s da educação básica do estado do Rio de Janeiro, no contexto pandêmico, e sua relação com a saúde, tomando por base registros diários de professore(a)s em cadernetas digitais. Trata-se de uma pesquisa social de cunho qualitativo e de natureza participativa, realizada em parceria com o sindicato dos professores de Macaé e região. Participaram do estudo oito professore(a)s das redes pública e particular de ensino. No que tange à análise dos materiais, adotou-se a técnica de análise temática, organizada em dois blocos temáticos principais de interpretação: o primeiro relaciona-se à análise do processo de trabalho (remoto) docente, já o segundo refere-se à saúde, comorbidades pregressas e resistências coletivas. Quanto aos resultados, sobressaiu que professores(a)s vivenciam o aprofundamento de formas de opressão, precarização e intensificação do trabalho. (AU)


The main aim of this study was to problematize health aspects of the work process of primary school teachers in the state of Rio de Janeiro in the context of the pandemic using daily entries made by teachers in digital notebooks. We conducted a qualitative participatory social study in partnership with the Macaé Teachers Union. Eight teachers from public and private schools participated in the study. The data were analyzed using thematic analysis and organized into two main categories: the first related to the analysis of the (remote) work process; and the second comprising health, previous comorbidities and collective resistance. The findings highlight that the teachers are experiencing the deepening of forms of oppression, worsening working terms and conditions, and work intensification. (AU)


El objetivo principal de este artículo es problematizar aspectos del proceso de trabajo de profesores y profesoras de la educación básica del Estado de Río de Janeiro, en el contexto pandémico y su relación con la salud, utilizando como base registros diarios de profesores y profesoras en cartillas digitales. Se trata de un estudio social de cuño cualitativo y de naturaleza participativa, realizado en alianza con el Sindicato de los profesores de Macaé y región. En el estudio participaron ocho profesores y profesoras de las redes pública y particular de enseñanza. En lo que se refiere al análisis de los materiales, se adoptó la técnica de análisis temático, organizado en dos bloques temáticos principales de interpretación: el primero se relaciona al análisis del proceso de trabajo (a distancia) docente; el segundo, se refiere a la salud, comorbilidades anteriores y resistencias colectivas. Con relación a los resultados, se subrayó que profesores y profesoras viven la profundización de formas de opresión, precarización e intensificación del trabajo. (AU)


Asunto(s)
Humanos , Masculino , Femenino , Maestros/psicología , Teletrabajo/tendencias , COVID-19 , Salud Laboral , Diario
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