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ABSTRACT The semi-arid region faces problems related to water deficit and the presence of brackish water that compromise crop performance. Therefore, irrigation frequency can enhance the growth of agricultural crops of interest even under salt stress conditions. In this context, the objective of the present study was to evaluate different irrigation frequencies with water of higher and lower salinity on the agronomic performance of millet. The experiment was conducted from September to November 2020, in the experimental area of the Auroras Seedling Production Unit, belonging to the Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Ceará, Brazil. The experimental design used was completely randomized in a 4 × 2 factorial arrangement, with five repetitions. The first factor corresponded to four irrigation frequencies (F1 - daily irrigation; F2 - irrigation every two days; F3 - irrigation every three days; F4 - irrigation every four days) and the second factor consisted of two levels of electrical conductivity of irrigation water (0.3 and 5.0 dS m-1). Salt stress (5.0 dS m-1) negatively affected leaf area, plant height, stalk diameter, panicle length, and leaf, stem, panicle, and total dry mass of millet, under daily and four-day irrigation frequencies. Increasing the interval in irrigation frequency to beyond two days negatively affects the agronomic performance of millet crop, regardless of the electrical conductivity of water used (0.3 or 5.0 dS m-1). Under salt stress conditions, adopting irrigation frequencies between two and three days can be a viable alternative for irrigation management in pearl millet crop.

RESUMO A região semiárida apresenta problemas relacionados ao déficit hídrico e presença de água salobra que comprometem o desempenho das culturas. Assim, a frequência de irrigação pode promover melhores condições de desenvolvimento das culturas de interesse agrícola mesmo em condições de estresse salino. Neste sentido, objetivou-se avaliar diferentes frequências de irrigação com água de maior e menor salinidade sobre desempenho agronômico do milheto. O experimento foi realizado no período de setembro a novembro de 2020, na área experimental da Unidade de Produção de Mudas Auroras, pertencente a Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Ceará. O delineamento experimental utilizado foi inteiramente casualizado em arranjo fatorial 4 × 2, com cinco repetições. O primeiro fator corresponde a quatro frequências de irrigação (F1 - irrigação diária; F2 - irrigação a cada dois dias; F3 - irrigação a cada três dias; F4 - irrigação a cada quatro dias) e o segundo consistiu em dois níveis de condutividade elétrica da água de irrigação (0,3 e 5,0 dS m-1). O estresse salino (5,0 dS m-1) afetou negativamente a área foliar, altura da planta, diâmetro do colmo, comprimento da panícula, massa seca da folha, caule, panícula e total do milheto, sob irrigação diária e cada quatro dias. O aumento do intervalo na frequência de irrigação acima de dois dias afeta o desempenho agronômico do milheto, independente da condutividade elétrica da água (0,3 ou 5,0 dS m-1). Em condições de estresse salino, adotar frequências de irrigação entre dois e três dias pode ser uma alternativa viável para o manejo da irrigação do milheto.

https://doi.org/10.1590/1807-1929/agriambi.v28n3e272197

First report of Raillietiella mottae (Pentastomida: Raillietiellidae) infecting Rhinella diptycha (Anura, Bufonidae) in the Brazilian Northeast
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Lima, A. E. S.

; Duarte, R. G.

; Lacerda, G. M. C.

; Almeida, W. O.

; Ribeiro, S. C.

Brazilian Journal of Biology

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2024, Volumen 84 elocation e247768

Resumen: En | Texto: En | PDF: En

https://doi.org/10.1590/1519-6984.247768

Antiulcerogenic and antioxidant activities of Plantago ovata ethanolic extract in rats
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Khedher, A.

; Dhibi, S.

; Bouzenna, H.

; Akermi, S.

; El Feki, A.

; Teles, P. H. V.

; Almeida, J. R. G. S.

; Hfaiedh, N.

Brazilian Journal of Biology

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2024, Volumen 84 elocation e255120

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo O presente estudo teve como objetivo determinar as atividades antiulcerogênica e antioxidante das sementes de Psyllium (Plantago ovata Forssk) em ratos. O potencial antioxidante foi avaliado utilizando o método do sequestro do radical livre DPPH, autooxidação do β-caroteno, poder redutor de ferro e atividade de sequestro do radical hidroxila. No estudo antiulcerogênico, o pré-tratamento com o extrato etanólico das sementes de Plantago ovata (POE) (400 mg/Kg b.wt) reduziu a úlcera gástrica induzida pelo etanol em ratos, diminuindo o valor do índice de úlcera e preservando a integridade da mucosa gástrica. O estudo do estresse oxidativo nos tecidos estomacais mostrou um aumento significativo dos níveis das enzimas antioxidantes superóxido dismutase, catalase e glutationa peroxidase, com uma diminuição significativa da peroxidação lipídica enquanto pré-tratamento com POE. Em conclusão, o POE protege contra úlcera gástrica devido aos seus potenciais antioxidantes e à presença de moléculas bioativas.

Abstract This study aimed to determine the antiulcerogenic and antioxidant activities of Psyllium (Plantago ovata Forssk) seed ethanolic extract in rats. We assessed the antioxidant potential using free radical scavenging on DPPH, β-carotene bleaching activity, ferric reducing power, and hydroxyl radical scavenging activity. In the antiulcerogenic study, pre-treatment with Plantago ovata seeds ethanolic extract (POE) (400 mg/kg b.wt) significantly protected against ethanol-induced gastric ulcer in rats by decreasing the ulcer index value and preserving the integrity of the gastric mucosa. The oxidative stress status in the stomach tissues showed a significant increase in the antioxidant enzyme levels of superoxide dismutase, catalase, and glutathione peroxidase with a significant decrease in lipid peroxidation during pre-treatment with POE. In conclusion, the POE protects against gastric ulcer due to its antioxidant potential and presence of bioactive molecules.

https://doi.org/10.1590/1519-6984.255120

Long-term oncological and surgical outcomes after Video Endoscopic Inguinal Lymphadenectomy (VEIL) in patients with penile cancer
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Tobias-Machado, Marcos

; Ornellas, Antonio A.

; Hidaka, Alexandre K.

; Medina, Luis G.

; Mattos, Pablo A. L.

; Besio, Ruben S.

; Abreu, Diego

; Castro, Pedro R.

; Nishimoto, Ricardo H.

; Astigueta, Juan

; Dourado, Aurus

; Machado, Roberto D.

; Magnabosco, Wesley J.

; Corona-Montes, Victor

; Villoldo, Gustavo M.

; Zampolli, Hamilton C.

; Taha, Anis

; Auad, Pericles R.

; Faria, Eliney F.

; Arantes, Paulo B. O.

; Tavares, Alessandro

; Nascimento, Francisco S. M. S.

; Brazão Jr., Eder S.

; Rocha, Maurício M.

; Costa, Walter H.

; Panico, Vinicius

; Reis, Leonardo O.

; Almeida-Carrera, Roberto J.

; Silva, Rafael C.

; Zequi, Stênio C.

; Calixto, José R. R.

; Sotelo, Rene

International braz j urol

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Oct 2023, Volumen 49 Nº 5 Paginas 580 - 589

Resumen: En | Texto: En | PDF: En

ABSTRACT Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL). Materials and Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included. All centers performed the procedure following the same previously described standardized technique. Inclusion criteria included penile cancer patients with no palpable lymph nodes and intermediate/high-risk disease and those with non-fixed palpable lymph nodes less than 4 cm in diameter. Categorical variables are shown as percentages and frequencies whereas continuous variables as mean and range. Results: From 2006 to 2020, 210 VEIL procedures were performed in 105 patients. Mean age was 58 (45-68) years old. Mean operative time was 90 minutes (60-120). Mean lymph node yield was 10 nodes (6-16). Complication rate was 15.7%, including severe complications in 1.9% of procedures. Lymphatic and skin complications were noted in 8.6 and 4.8% of patients, respectively. Histopathological analysis revealed lymph node involvement in 26.7% of patients with non-palpable nodes. Inguinal recurrence was observed in 2.8% of patients. 10y- overall survival was 74.2% and 10-y cancer specific survival was 84.8%. CSS for pN0, pN1, pN2 and pN3 were 100%, 82.4%, 72.7% and 9.1%, respectively. Conclusion: VEIL seems to offer appropriate long term oncological control with minimal morbidity. In the absence of non-invasive stratification measures such as dynamic sentinel node biopsy, VEIL emerged as the alternative for the management of non-bulky lymph nodes in penile cancer.

https://doi.org/10.1590/s1677-5538.ibju.2023.0065

Cultivation of chicory under nutrient solutions prepared in brackish waters and applied at different temperatures
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Oliveira, Tarcísio F. de

; Santos Júnior, José A.

; Silva, Mairton G. da

; Gheyi, Hans R.

; Almeida, Júlio C. de

; Guiselini, Cristiane

Revista Brasileira de Engenharia Agrícola e Ambiental

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Sep 2023, Volumen 27 Nº 9 Paginas 719 - 728

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT The cooling of nutrient solutions prepared in brackish water can have several implications for plants grown in hydroponics. In this context, the present study aimed to evaluate the effects of temperature and salinity stresses in the root zone on the growth, water status, production, and leaf characteristics of chicory cultivar Folha Larga, exposed to four values of electrical conductivity of nutrient solution - ECns (1.7, 3.2, 4.7, and 6.2 dS m-1), applied at two temperatures (ambient temperature and controlled in the range between 25-30 °C). The randomized block design arranged in a 4 × 2 factorial scheme with four replications was used. Cooling nutrient solution mitigated effects of salinity on stem height and diameter, number of leaves, and leaf area of chicory; provided greater production and water consumption, stability into root-shoot relationships, and membrane integrity within the saline range studied (1.7 to 6.2 dS m-1).

RESUMO O resfriamento de soluções nutritivas preparadas em águas salobras pode ter diversas implicações sobre as plantas cultivadas em hidroponia. Nesse contexto, o presente estudo teve como objetivo de avaliar os efeitos dos estresses de temperatura e salinidade na zona radicular sobre o crescimento, estado hídrico, produção e características foliares do almeirão, cultivar Folha Larga, exposto a quatro valores de condutividade elétrica da solução nutritiva - CEsn (1,7; 3,2; 4,7 e 6,2 dS m-1), aplicado em duas temperaturas (ambiente e controlada na faixa entre 25-30 °C). Foi adotado o esquema fatorial 4 × 2 em blocos casualizados, com quatro repetições. O resfriamento da solução nutritiva mitigou os efeitos da salinidade sobre a altura e diâmetro do caule, número de folhas e área foliar do almeirão; proporcionou maior produção e consumo hídrico, estabilidade na relação raiz parte aérea e integridade da membrana, no intervalo salino estudado (1,7 a 6,2 dS m-1).

https://doi.org/10.1590/1807-1929/agriambi.v27n9p719-728

Clinical and Urodynamic results of the Argus T® sling in moderate and severe male stress urinary incontinence after radical prostatectomy – a 5 year prospective study.
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Carvalho, Adilson P.

; Silva, André B.

; Lebani, Bruno R.

; Pinto, Eduardo R.

; Felipe, Mariana R.

; Skaf, Milton

; Girotti, Marcia E.

; Zequi, Stenio C.

; Sacomani, Carlos A. R.

; Almeida, Fernando G.

International braz j urol

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Ago 2023, Volumen 49 Nº 4 Paginas 452 - 461

Resumen: En | Texto: En | PDF: En

ABSTRACT Purpose: Sling as a therapeutic option for male stress urinary incontinence (SUI) has been reviewed in the last two decades, as it is a relatively simpliest surgery compared to artificial urinary sphincter and has the ability to modulate urethral compression. This study aims to evaluate the efficacy, rate of complications, quality of life and the effects on bladder emptying of the Argus T® compressive and ajustable sling in moderate and severe male SUI treatment. Materials and Methods: Men eligible for stress urinary incontinence treatment after radical prostatectomy were recruited and prospectively evaluated, from March 2010 to November 2016. It was selected outpatient men with moderate and severe SUI, after 12 months of radical prostatectomy, who have failed conservative treatment. All patients had a complete clinical and urodynamic pre and post treatment evaluation, by means of clinical history, physical examination, urine culture, 1-hour pad test and ICIq-SF questionnaire. The UDS was performed after 12, 18 and 24 months postoperatively. Results: Thirty-seven men underwent sling surgery, 19 patients (51.4%) with moderate and 18 (48.6%) with severe SUI. The minimum follow-up time was 5 years. Overall, we had a success rate of 56.7% at 60 months follow-up. After surgery, we did not observe significant changes in the urodynamic parameters evaluated during the follow-up. No patient had urodynamic bladder outlet obstruction (BOO) after sling implantation. Readjustment of the Argus T® sling was performed in 16 (41%) of the patients and 51% of the patients reported some adverse event. Conclusion: We demonstrate a long-term efficacy and safety of Sling Argus T® as an alternative to moderate and severe male SUI treatment. Furthermore, in our study bulbar urethra compression does not lead to bladder outlet obstruction.

https://doi.org/10.1590/s1677-5538.ibju.2023.0003

Factors associated with oral health related-quality of life in preschoolers from an Andean community
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Huamán Mendoza, Aldrin A.

; Pinedo Tellez, Karen S.

; Rodrigues de Almeida Silva, Carla

; Tello Guerrero, Yvette G.

; Calle Lopez, Patricia

; García Rupaya, Carmen R.

; Valdez Jurado, Freddy R.

Revista Estomatológica Herediana

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Ene 2023, Volumen 33 Nº 1 Paginas 26 - 33

Resumen: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Objective : To analyze the oral health status and its relationship with the quality of life of Andean children of the community of Paucarbamba in Huancavelica, Peru. Material and Methods : The observational, cross-sectional, and correlational study was conducted on a sample of 120 children aged 3-5 years. Early childhood caries was considered using the dmft index. In addition, presence and type of malocclusion were assessed. The oral health-related quality of life was measured by The Early Childhood Oral Health Impact Scale (ECOHIS) questionnaire. Univariate and bivariate analysis were performed. Linear regression and Spearman correlation were conducted to identify the factors that most explained the ECOHIS score. Results : Multiple linear regression by least squares method did not consider gender, age, malocclusion, and simplified oral hygiene index as significant. This analysis only included dmft index as significant (p<0.05) to explicate the ECOHIS score. The estimated regression model was ECOHIS score = 11.67 + 0.79*dmft, in which the score increased by 0,79 for each unit obtained of the dmft index, and the dmft in a R2 = 30% (p<0.001) explained the variability of the ECOHIS score achieved. Conclusions : There is a negative impact of dental caries on the quality of life of preschool children and their families in an Andean community in Paucarbamba, Peru.

RESUMEN Objetivo : Analizar el estado de salud bucal y su relación con la calidad de vida de los preescolares de una comunidad andina y vulnerable del Perú. Material y Métodos : El estudio observacional, correlacional y transversal se realizó en una muestra de 120 niños de 3 a 5 años. La caries de la primera infancia se determinó mediante el índice ceod. También se consideró la presencia y el tipo de maloclusión. El cuestionario Early Childhood Oral Health Impact Scale (ECOHIS) midió la calidad de vida relacionada con la salud bucal. Los factores y variables orales se analizaron de manera univariada y bivariada. Se realizó un análisis de correlación de Spearman y regresión lineal para identificar los factores y en qué medida explicaban la puntuación del cuestionario. Resultados : El análisis de regresión lineal múltiple por el método de mínimos cuadrados solo incluyó como significativa (p <0,05) la contribución de ceod para explicar la puntuación del cuestionario, dejando de lado variables como el sexo, la edad, la maloclusión y el índice de higiene bucal simplificado. El modelo de regresión estimado fue Puntuación del Cuestionario = 11,67 + 0,79*ceod, donde la puntuación del cuestionario aumentó en 0,79 por cada unidad ganada de ceod, y la variabilidad de las puntuaciones obtenidas se explica por el ceod en un R2 = 30% (p<0,001). Conclusiones : Existe un impacto de la caries dental en la calidad de vida de los preescolares de uma comunidade andina del Perú y sus familias.

https://doi.org/10.20453/reh.v33i1.4431

The Contribution of Meteorological Parameters and the COVID-19 Partial Lockdown on Air Quality in Rio de Janeiro, Brazil
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Beringui, Karmel

; Justo, Elizanne P. S.

; Ventura, Luciana M. B.

; Gomes, Ruan G. S.

; Lionel-Mateus, Vinícius

; Cruz, Alex H. De La

; Almeida, Ana Carolina L. B. de

; Ramos, Michelle B.

; Suazo, Julio Angeles

; Valle, Pedro H. R.

; Gioda, Adriana

Journal of the Brazilian Chemical Society

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Ene 2023, Volumen 34 Nº 1 Paginas 69 - 82

Resumen: En | Texto: En | PDF: En

This study evaluated the pollutant levels (NO2, SO2, CO, and O3), air quality index (AQI) and the influence of meteorological variables and coronavirus disease (COVID-19) pandemic on the air quality in Rio de Janeiro. The data set used comprises periods before (March-April, 2019) and during pandemic (March-April, 2020). According to the AQI results, on most days, the air quality was ranked as “good”. Brazilian air quality standards for SO2, O3, and NO2 were not exceeded in any of the monitoring stations during partial lockdown, while CO exceeded in all periods in one site due to industrial emission. Comparing both periods, descriptive statistics for the meteorological parameters presented no differences, which suggests similar conditions. However, when evaluated week by week in 2020, weather conditions presented some differences that probably affected pollutant concentrations. The correlations between O3 and NO2 and some meteorological parameters indicate that variations in both favored ozone formation, since it is a photochemical process favored by temperature and solar radiation and that, in Rio de Janeiro, low NO2 concentrations lead to increased O3. The improvements on air quality during the partial lockdown may be attributed mainly to a reduction on emission sources rather than weather conditions.

https://doi.org/10.21577/0103-5053.20220089

Evaluation of antioxidant, photoprotective and antinociceptive activities of Marcetia macrophylla extract: potential for formulation of sunscreens
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Costa, S. C. C.

; Damasceno, P. K. F.

; Lima, R. G. G.

; Botura, M. B.

; Branco, C. R. C.

; Silva, T. R. S.

; Oliveira, A. P.

; Guimarães, A. L.

; Almeida, J. R.G.S.

; Branco, A.

Brazilian Journal of Biology

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2023, Volumen 83 elocation e246312

Resumen: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo O extrato bruto de Marcetia macrophylla mostrou atividade antioxidante, fotoprotetora e antinociceptiva, sendo em seguida investigado como ingrediente ativo em uma formulação fotoprotetora. Assim, o extrato de M. macrophylla apresentou atividade antioxidante com IC50 de 3,43 mg/mL (teste de sequestro do DPPH∙) e Fator de Proteção Solar de 20,25 (FPS/UV-B, 250 µg/mL) e UV-A de 78,09% (teste de fotobranqueamento do trans-resveratrol). A atividade antinociceptiva usando o teste in vivo de contorções abdominais induzidas por ácido acético foi superior a todos os padrões testados (99,14% na dose de 200 mg/Kg). A análise por cromatografia líquida de alta eficiência acoplada a detector de fotodiodos e espectroscopia de massas multi-estágio (CLAE-DAD-EM/EM) possibilitou a caracterização dos flavonoides quercetina-3-O-hexosídeo, quercetina-3-O-pentosídeo e quercetina-3-O-desoxihexosídeo. A formulação farmacêutica contendo o extrato ativo bruto de Marcetia macrophylla foi preparada e os testes físico-químicos (características organolépticas, análise de pH e centrifugação), o UVB in vitro (fator de proteção solar, FPS) e UVA (β-caroteno) foram investigados. A formulação apresentou resultados satisfatórios frente aos parâmetros físico-químicos avaliados e ativos contra UV. Assim, M. macrophylla apresentou atividades biológicas com potencial uso em preparações fitofarmacêuticas.

Abstract The antioxidant, photoprotective and antinociceptive Marcetia macrophylla active extract was investigated as an active ingredient in a sunscreen cream formulation. Thus, the M. macrophylla extract showed IC50 of 3.43 mg/ml of the antioxidant (DPPH∙ scavenging test) and Sun Protection Factor of 20.25 (SPF/UV-B, at 250 µg/ml) and UV-A of 78.09% (photobleaching trans-resveratrol test). The antinociceptive activity was superior to all standards tested using the in vivo acetic acid-induced writhing test (99.14% at the dose of 200 mg/kg) and the high-performance liquid chromatography coupled with diode array detector and mass spectroscopy multi-stage (HPLC-DAD-MS/MS) enabled the structural characterization of the quercetin-3-O-hexoside, quercetin-3-O-pentoside and quercetin-3-O-desoxihexoside. The pharmaceutical formulation containing the Marcetia macrophylla crude active extract was prepared and the physicochemical tests (organoleptic characteristics, pH analysis and centrifugation), the in vitro UVB (sun protection factor, SPF) and UVA (β-carotene) using the spectroscopic method were investigated. The formulation showed satisfactory results concerning the physicochemical parameters evaluated and active against the UV test. Thus, M. macrophylla showed biological activities with potential use in pharmaceutical preparations.

https://doi.org/10.1590/1519-6984.246312 183 descargas

10.

Antioxidants and cardioprotective effects of ethyl acetate fraction of Canavalia rosea leaves in myocardial ischemia-reperfusion injury
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FEITOSA, MARAÍSA B.J.

; ARAÚJO, SILVAN S.

; MESQUITA, THÁSSIO RICARDO R.

; GIODA, CAROLINA R.

; SÁ, LUCAS A. DE

; ALMEIDA, GRACE KELLY M.

; MIGUEL-DOS-SANTOS, RODRIGO

; BARBOSA, ANDRIELE M.

; VASCONCELOS, CARLA MARIA L. DE

; CAMARGO, ENILTON A.

; BARREIROS, ANDRÉ LUÍS B.S.

; ESTEVAM, CHARLES S.

; MORAES, ÉDER RICARDO DE

; AMARAL, RICARDO G.

; LAUTON-SANTOS, SANDRA

Anais da Academia Brasileira de Ciências

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2023, Volumen 95 Supl. 1 elocation e20220514

Resumen: En | Texto: En | PDF: En

Abstract Different degrees in the biological activities of Canavalia rosea had been previously reported . In this study, our group assessed the cardioprotective effects of the ethyl acetate fraction (EAcF) of the Canavalia rosea leaves. Firstly, it was confirmed, by in vitro approach, that the EAcF has high antioxidant properties due to the presence of important secondary metabolites, as flavonoids. In order to explore their potential protector against cardiovascular disorders, hearts were previously perfused with EAcF (300 μg.mL-1) and submitted to the global ischemia followed by reperfusion in Langendorff system. The present findings have demonstrated that EAcF restored the left ventricular developed pressure and decreased the arrhythmias severity index. Furthermore, EAcF significantly increased the glutathiones peroxidase activity with decreased malondialdehyde and creatine kinase levels. EAcF was effective upon neither the superoxide dismutase, glutationes reductase nor the catalase activities. In addition, the Western blot analysis revealed that ischemia-reperfusion injury significantly upregulates caspase 3 protein expression, while EAcF abolishes this effect. These results provide evidence that the EAcF reestablishes the cardiac contractility and prevents arrhythmias; it is suggested that EAcF could be used to reduce injury caused by cardiac reperfusion. However more clinical studies should be performed, before applying it in the clinic.

https://doi.org/10.1590/0001-3765202320220514

11.

Evaluation of the antinociceptive effect generated by citronellal monoterpene isomers
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Costa, A. O. C.

; Rego, R. I. A.

; Andrade, H. H. N.

; Costa, T. K. V. L.

; Salvadori, M. G. S. S.

; Almeida, R. N.

; Castro, R. D.

Brazilian Journal of Biology

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2023, Volumen 83 elocation e271781

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Due to the complex nature of pain and the participation of physical, cognitive, psychological and behavioral aspects, pain management has several approaches. The use of medicinal plants in developing countries is quite expressive. Seeking new options for the treatment of emerging or debilitating diseases. Therefore, the present study seeks to elucidate the effects of the monoterpene, citronellal, differentiating its activity by isomers (R)-(+) and (S)-(-) citronellal. The study used several methods to evaluate the effects of citronellal isomers on motor coordination, nociceptive response, and the involvement of opioid, glutamatergic, and transient receptor pathways. The methods included rota-rod, hot-plate, and formalin tests, as well as the use of specific inhibitors and agonists. Data were analyzed using inferential statistics with a 95% confidence level. Both isomers did not significantly affect the motor coordination of the studied animals. The isomer (S)-(-) citronellal showed better results in relation to its structural counterpart, managing to have an antinociceptive effect in the formalin and hot plate tests with a lower concentration (100 mg/kg) and presenting fewer side effects, however, the this study was not able to elucidate the mechanism of action of this isomer despite having activity in studies with substances that act on specific targets such as glutamate and capsaicin, its activity was not reversed with the use of antagonists for pathways related to nociception. While the (R)-(+) citronellal isomer, despite showing total activity only at a concentration of 150 mg/kg, was able to determine its mechanism of action related to the opioid pathway by reversing its activity by the antagonist naloxone, being this is a pathway already correlated with nociception control treatments, however, it is also related to some unwanted side effects. In this way, new studies are sought to elucidate the mechanism related to the isomer (S)-(-) citronellal and a possibility of use in other areas related to the treatment of pain or inflammation.

Resumo Devido à natureza complexa da dor e a sua participação de aspectos físicos, cognitivos, psicológicos e comportamentais, o manejo da dor possui diversas abordagens. O uso de plantas medicinais em países em desenvolvimento é bastante expressivo. Buscando novas opções para o tratamento de denças emergentes ou debilitantes. Portanto, o presente estudo busca elucidar os efeitos do monoterpeno, citronelal, diferenciando sua atividade pelos isômeros (R)-(+) e (S)-(-) citronelal. O estudo utilizou diversos métodos para avaliar os efeitos dos isômeros de citronelal na coordenação motora, resposta nociceptiva e o envolvimento de vias opioides, glutamatérgicas e de receptores transitórios. Os métodos incluíram testes de rota-rod, placa quente e formalina, além do uso de inibidores e agonistas específicos. Os dados foram analisados estatisticamente com um intervalo de confiança de 95%. Ambos os isomeros não afetaram significativamente a coordenação motora dos animais em estudo. O isômero (S)-(-) citronelal apresentou melhores resultados em relação ao seu homólogo estrutural, conseguindo ter um efeito antinociceptivo nos testes de formalina e placa quente com menor concentração (100 mg/kg) e apresentando menos efeitos colaterais, entretanto, o presente estudo não foi capaz de elucidar o mecanismo de ação deste isomero apesar de ter atividadade em estudos com substancias que agem em alvos específicos como glutamato e capsaicina, sua atividade não foi revertida com a utilização de antagonistas para as vias relacionadas à nocicepção. Enquanto o isômero (R)-(+) citronelal, apesar de apresentar de apresentar total atividade somente na concentração de 150 mg/kg, foi capaz de determinar seu mecanismo de ação relacionado à via opióide pela reversão da sua atividade pelo antagonista naloxona, sendo esta uma via já correlacionada com os tratamentos de controle da a nocicepção, no entanto, também está relacionada a alguns efeitos colaterais indesejados. Desta forma busca-se novos estudos para elucidação do mecanismo relacionados ao isomero (S)-(-) citronellal e uma possibilidade de utilização em outras areas relacionadas ao tratamento da dor ou inflamação.

https://doi.org/10.1590/1519-6984.271781

12.

First record of Sebekia oxycephala (Pentastomida: Sebekidae) infecting Helicops angulatus (Reptilia: Colubridae) in Northeast Brazil
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Oliveira, M. C.

; Ferreira-Silva, C.

; Silva, R. J.

; Almeida, W. O.

; França, F. G. R.

; Lourenço-de-Moraes, R.

Brazilian Journal of Biology

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2023, Volumen 83 elocation e275302

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract In this study, we investigated the infection by pulmonary parasites in the water snake Helicops angulatus. We found four nymphs of the pentastomide parasite Sebekia oxycephala, parasitizing two adult females H. angulatus collected in the municipality of Rio Tinto, Paraíba, Brazil. This occurrence is likely due to the nymphs of this parasite directly infecting aquatic intermediate hosts, such as fish. The result of this study represents the first record of pentastomid infecting H. angulatus.

Resumo Neste estudo investigamos a infecção por parasitos pulmonares na serpente Helicops angulatus. Encontramos quatro ninfas de pentastomídeos (Sebekia oxycephala) parasitando duas fêmeas adultas de H. angulatus oriundas do município de Rio Tinto, Paraíba, Brasil. A ocorrência das ninfas na serpente sugere que a transmissão ocorra através da cadeia trófica, uma vez que peixes atuam como hospedeiros intermediários do parasito e fazem parte da dieta H. angulatus . O resultado deste estudo representa o primeiro registro de pentastomídeos infectando H. angulatus.

https://doi.org/10.1590/1519-6984.275302

13.

Agronomic parameters of sugarcane under planting densities in different cultivation cycles
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Costa, J. E.

; Silva, J. H. B.

; Silva, I. D. N.

; Silva, G. M. L.

; Nascimento, R. R. A.

; Silva, J. S. L.

; Barbosa, J. M. S.

; Cardoso, E. V. B.

; Silva, A. V.

; Nascimento, M. A.

; Santos, J. P. O.

; Martins, A. H. P. C.

; Pereira Neto, F.

; Amorim, P. M. D.

; Silva, B. O. T.

; Almeida, L. J. M.

; Mielezrski, F.

Brazilian Journal of Biology

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2023, Volumen 83 elocation e278007

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Low density sugarcane plantation (LDSP) has been implemented by some sugarcane producers in Brazil, aiming to save seeds and operational costs. The study was carried out in the municipality of Areia, Paraíba, Brazil. Five planting densities were used, varying from 5 to 25 m-2 of buds arranged in randomized blocks, with four replications. Data were measured annually over three cultivation cycles (2017 to 2020), during which the field was fertilized with NPK and the harvests were carried out manually without prior burning. The lower planting density presents higher productivity only in the cane plant (101.03 t ha-1) due to the higher plant height (2.37 m) and the higher number of stalks (11 stalks m-2), suggesting that these variables are due to the greater availability of light, water and photosynthate. However, there is a drastic reduction in sugarcane yield for this lower population in the 2nd ratoon by up to 65.62%, which is correlated with number of stalks per meter. We demonstrate the agronomic viability of LDSP in the population of 10 buds m-2 in relation to conventional planting of sugarcane until the 2nd ratoon. Data are important for future studies to present additional considerations for other production factors, such as the effects of mechanized harvesting and the management of nutrients and water, assessing the sustainability of this large-scale planting system.

Resumo O método de plantio de cana-de-açúcar de baixa densidade (LDSP) vem sendo implementado por alguns produtores de cana-de-açúcar no Brasil, visando economia de sementes e custos operacionais. O estudo foi realizado no município de Areia, Paraíba, Brasil. Utilizou-se cinco densidades de plantio, variando de 5 a 25 m-2 de gemas dispostas em blocos casualizados, com quatro repetições. Os dados foram medidos anualmente ao longo de três ciclos de cultivo (2017 a 2020). Menor densidade de plantio mostrou maior produtividade (101,03 t ha-1) devido à maior altura de planta (2,37 m) e ao maior número de hastes (NS) (11 hastes m-2), sugerindo que essas variáveis são devido à maior disponibilidade de luz, água e fotoassimilados. No entanto, houve redução drástica na produtividade da cana-de-açúcar para esta população menor na 2ª soca em 65,62%, estando correlacionado com o número de colmos por metro. Demonstramos a viabilidade agronômica do LDSP em uma população de 10 gemas m-2 em relação ao plantio convencional de cana-de-açúcar até a 2ª soca. Os dados são importantes para que estudos futuros apresentem considerações adicionais sobre outros fatores de produção, como os efeitos da colheita mecanizada e do manejo de nutrientes e água, avaliando a sustentabilidade desse sistema de plantio em larga escala.

https://doi.org/10.1590/1519-6984.278007

14.

Antioxidant properties of date seeds extract (Phoenix dactylifera L.) in alloxan induced damage in rats
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Abbassi, R.

; Pontes, M. C.

; Dhibi, S.

; Duarte Filho, L. A. M. S.

; Othmani, S.

; Bouzenna, H.

; Almeida, J. R. G. S.

; Hfaiedh, N.

Brazilian Journal of Biology

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2023, Volumen 83 elocation e274405

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The study was conducted to examine the antioxidant activity and evaluate the protective effects of the date seeds powder kentichi against alloxan-induced damage in the liver, kidney, and pancreas in diabetic’s rats. Group 1: control group, that did not receive any treatment, Group 2: alloxan was injected intraperitoneally (120 mg/kg body weight) for two days (Diab), Group 3: treated only by date seeds powder added in the diet (300 g/kg) for 6 weeks (DSPK), Group 4: alloxan-diabetic rats treated with date seeds powder (300 g/kg) (DSPK + Diab). Estimations of biochemical parameters in blood were determined. TBARS, SOD, CAT, and GPx activities were determined. A histopathological study was done by immersing pieces of both organs in a fixative solution followed by paraffin hematoxylin-eosin staining. In addition, the antioxidant activities of DSPK were evaluated by DPPH radical scavenging activity, reducing power, and ABTS free radical scavenging. The results revealed that date seeds significantly decreased serum levels of glucose, cholesterol, triglycerides, urea, creatinine, T-protein, ALP, D-bili and T-bili levels. In addition, superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities that had been reduced in liver, kidney, and pancreas of the treated group were restored by DSPK treatments and, therefore, the lipid peroxidation level was reduced in the liver, kidney and pancreas tissue compared to the control group. Additionally, the histological structure in these organs was restored after treatment with date seeds powder.

Resumo O estudo foi conduzido para avaliar a atividade antioxidante e avaliar os efeitos protetores das sementes de tâmara em pó kentichi contra danos induzidos por aloxana no fígado, rim e pâncreas em ratos diabéticos. Grupo 1 (Controle): grupo controle, que não recebeu nenhum tratamento, Grupo 2 (Diab): aloxana foi injetada por via intraperitoneal (120 mg/kg de peso corporal) por dois dias, Grupo 3 (DSPK): tratado apenas com pó de sementes de tâmara adicionado na dieta (300 g por kg) por 6 semanas, Grupo 4 (DSPK+Diab): ratos aloxano-diabéticos tratados com pó de sementes de tâmaras (300 g/kg). As estimativas de parâmetros bioquímicos no sangue foram determinadas. As atividades de TBARS, SOD, CAT e GPx foram determinadas. O estudo histopatológico foi feito por meio da imersão de pedaços de ambos os órgãos em solução fixadora seguida de coloração com parafina hematoxilina-eosina. Além disso, as atividades antioxidantes de DSPK foram avaliadas pela atividade de sequestro do radical DPPH, poder redutor e sequestro do radical ABTS. Os resultados revelaram que as sementes de tâmara diminuíram significativamente os níveis séricos de glicose, colesterol, triglicerídeos, ureia, creatinina, proteína T, ALP, D-bili e T-bili. Além disso, as atividades de superóxido dismutase (SOD), catalase (CAT) e glutationa peroxidase (GPx) que haviam sido reduzidas no fígado, rim e pâncreas do grupo tratado foram restauradas pelos tratamentos com DSPK e, portanto, o nível de peroxidação lipídica foi reduzido no tecido hepático, renal e pancreático em comparação com o grupo controle. Além disso, a estrutura histológica nesses órgãos foi restaurada após tratamento com pó de sementes de tâmara.

https://doi.org/10.1590/1519-6984.274405

15.

Advantages of treating sponge-gourd waste by mechanical refining on the properties of fiber-based poly(butylene adipate-co-terephthalate)/polylactide biocomposites
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CORREIA, THIAGO R.

; ALMEIDA, RENAN HENRIQUES G.

; CAMPOS, GUSTAVO N.

; SANTOS, CAIO C.

; COLAÇO, MARCOS VINICIUS

; FIGUEIREDO, MARCO ANTONIO G.

; SOUSA, ANA MARIA F.

; SILVA, ANA LÚCIA N.

Anais da Academia Brasileira de Ciências

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2023, Volumen 95 Supl. 1 elocation e20230003

Resumen: En | Texto: En | PDF: En

Abstract This study compares the morphology, thermal, and dynamic-mechanical properties of composites based on polybutylene adipate terephthalate/polylactide biocomposites with sponge gourd waste treated code as R, and non-treated sponge gourd, coded as NR, by mechanical disc refining after milled process. Extrusion followed by compression molding was used to produce biocomposites with fiber contents of 0, 2.5, 5, 10, and 15% wt/wt for R and NR sponge gourd fibers. Scanning electron microscopy analysis reveals that NR has the morphology of a rigid tubular shape, whereas R is a thinner, twisted, and fibrillated fiber. Regardless of the type of sponge gourd fiber used, the thermal stability of the composite decreases as the sponge gourd content increases. At 25°C, the biocomposite with 10%wt/wt R fiber has the highest storage modulus value. The comparison of Tangent peak values reveals that the presence of sponge gourd fibers reduces the energy dissipation of the biocomposites. The analysis of the loss modulus at 25°C reveals that R fiber contributes more to the reduction of energy dissipation of the biocomposites than NR. Furthermore, the Cole-Cole plot shows that R and NR fibers are dispersed and do not significantly change the homogeneity of the biopolymer systems.

https://doi.org/10.1590/0001-3765202320230003

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