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1.
Bioorg Chem ; 152: 107735, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-39213798

RESUMEN

Urease is a metalloenzyme that contains two Ni(II) ions in its active site and catalyzes the hydrolysis of urea into ammonia and carbon dioxide. The development of effective urease inhibitors is crucial not only for mitigating nitrogen losses in agriculture but also for offering an alternative treatment against infections caused by resistant pathogens that utilize urease as a virulence factor. This study focuses on synthesizing and investigating the urease inhibition potential of Biginelli Adducts bearing a boric acid group. An unsubstituted or hydroxy-substituted boronic group in the Biginelli adducts structure enhances the urease inhibitory activity. Biophysical and kinetics studies revealed that the best Biginelli adduct (4e; IC50 = 132 ± 12 µmol/L) is a mixed inhibitor with higher affinity to the urease active site over an allosteric one. Docking studies confirm the interactions of 4e with residues essential for urease activity and demonstrate its potential to coordinate with the nickel atoms through the oxygen atoms of carbonyl or boronic acid groups. Overall, the Biginelli adduct 4e shows great potential as an additive for developing enhanced efficiency fertilizers and/or for medical applications.


Asunto(s)
Ácidos Borónicos , Inhibidores Enzimáticos , Ureasa , Ácidos Borónicos/química , Ácidos Borónicos/farmacología , Ácidos Borónicos/síntesis química , Canavalia/enzimología , Relación Dosis-Respuesta a Droga , Inhibidores Enzimáticos/síntesis química , Inhibidores Enzimáticos/farmacología , Inhibidores Enzimáticos/química , Simulación del Acoplamiento Molecular , Estructura Molecular , Relación Estructura-Actividad , Ureasa/antagonistas & inhibidores , Ureasa/metabolismo , Níquel/química
2.
Vet Res Commun ; 48(5): 3423-3427, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39120674

RESUMEN

The presence of infective larvae (L3) of gastrointestinal nematode (GIN) parasites in pastures directly contributes to the constant recurrence of infections in ruminant herds. This study aimed to evaluate the nematophagous fungus Duddingtonia flagrans (AC001) (proteolytic crude extract and/or conidia) in the in vitro control of GIN L3 in coprocultures. To produce the proteolytic crude extract, a suspension (107 conidia/mL) of D. flagrans was inoculated into a liquid medium. After 6 days, the medium was filtered, centrifuged, and its proteolytic activity was measured. For the experimental assay, fecal samples were collected directly from the rectal ampulla of naturally infected sheep, and egg counts per gram of feces (EPG) were performed. Coprocultures were prepared using 10 g of fecal material with the groups defined as follows: control group G1 (1.0 mL of denatured proteolytic crude extract); treated group G2 (1.0 mL of active proteolytic crude extract); treated group G3 (1.0 mL of active proteolytic crude extract + 1.0 mL of AC001 conidia). The coprocultures were maintained at room temperature (25ºC), for 7 days, and then the L3 larvae were recovered. The results demonstrated that AC001 successfully produced protease (56.34 U/mL). The treatments with active proteolytic crude extract (G2) and active proteolytic crude extract + AC001 conidia (G3) were significantly different (p < 0.01) from the control group with denatured proteolytic crude extract (G1). AC001 and its proteolytic crude extract acted concomitantly on helminths directly in the fecal environment, suggesting potential future applications in the field.


Asunto(s)
Ascomicetos , Heces , Enfermedades de las Ovejas , Animales , Heces/parasitología , Heces/microbiología , Ovinos , Ascomicetos/fisiología , Enfermedades de las Ovejas/parasitología , Enfermedades de las Ovejas/terapia , Larva , Control Biológico de Vectores/métodos , Proteolisis , Péptido Hidrolasas/metabolismo , Infecciones por Nematodos/veterinaria , Infecciones por Nematodos/terapia , Recuento de Huevos de Parásitos/veterinaria
3.
Adv Rheumatol ; 64(1): 60, 2024 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-39160602

RESUMEN

BACKGROUND: The Primary Sjögren's Syndrome Quality of Life questionnaire (PSS-QoL) is the first specific instrument to assess health-related quality of life (HRQoL) in Sjögren's disease (SjD). The aim is to translate and cross-culturally adapt the PSS-QoL into Brazilian Portuguese and to evaluate its psychometric properties. METHODS: The original English version was translated into Brazilian Portuguese by two native Brazilians who were proficient in the English language. The retranslation was conducted by two native Americans proficient in Brazilian Portuguese. A committee undertook an analysis of the translated and retranslated versions, resulting in the generation of the first Brazilian version, which was submitted to the cross-cultural adaptation phase. In this phase, 50 participants with SjD responded to the instrument in Stages I and II, resulting in the generation of the second and final Brazilian version. To assess the psychometric properties, demographic and clinical data were collected from 75 patients. The HRQoL questionnaires (final Brazilian version of the PSS-QoL, Short Form-36 Health Survey (SF-36) and EuroQoL-5 dimension (EQ-5D)) were completed. Construct validity was analyzed using the Pearson or Spearman correlation coefficient. Reliability was analyzed using Cronbach's alpha and the intraclass correlation coefficient (ICC). RESULTS: Eight questions and one response item were revised due to an incomprehension rate of greater than 15% among the participants in the cross-cultural adaptation phase. The final Brazilian version of the PSS-QoL was validated, revealing a high correlation between the total score and functional capacity (r= -0.713, p < 0.001), and vitality (r= -0.770, p < 0. 001) and mental health (r= -0.742, p < 0.001) domains of the SF-36 and a moderate correlation with the other domains of the SF-36 and a moderate correlation with the EQ-5D-tto (r= -0.573, p < 0.001), and EQ-5D-VAS (r= -0.559, p < 0.001). The intraobserver (ICC = 0.939; Cronbach's alpha = 0.964) and interobserver (ICC = 0.965; Cronbach's alpha = 0.964) reliability of the total score showed very high consistency. CONCLUSION: The Brazilian version of the PSS-QoL has been demonstrated to be a valid and reproducible instrument for the assessment of HRQoL in patients with SjD.


Asunto(s)
Comparación Transcultural , Psicometría , Calidad de Vida , Síndrome de Sjögren , Traducciones , Humanos , Síndrome de Sjögren/psicología , Brasil , Encuestas y Cuestionarios , Femenino , Reproducibilidad de los Resultados , Masculino , Persona de Mediana Edad , Adulto , Anciano
4.
Pathogens ; 13(6)2024 May 23.
Artículo en Inglés | MEDLINE | ID: mdl-38921736

RESUMEN

Bacteria continue to disrupt poultry production and can cause resistant and persistent yolk sac infections to prevention efforts, known as omphalitis, resulting in poultry death. This literature review aims to demonstrate how plant extracts can help combat omphalitis in poultry. The Google Scholar database served as a resource for retrieving pertinent literature covering a wide range of search terms relevant to the scope of the research. The search strategy involved a combination of terms such as antimicrobials, chick embryo, omphalitis, plant extracts, poultry nutrition, and sanitization. The potential of plant extracts in preventing or treating infections in poultry, especially omphalitis, is mainly due to their antibacterial and safety properties. Sanitization and direct delivery of plant extracts to the internal contents of eggs, feed, or water are cutting-edge interventions to reduce the bacterial load in eggs and poultry, minimizing infection rates. For example, these interventions may include advanced treatment technologies or precise delivery systems focused on disease prevention in poultry.

5.
Animals (Basel) ; 14(3)2024 Jan 25.
Artículo en Inglés | MEDLINE | ID: mdl-38338025

RESUMEN

Poultry production is accompanied by the use of antimicrobial agents because no production step is free of microorganisms. In the absence of antimicrobial treatments with synthetic drugs, essential oils are among the most cited natural alternatives used to prevent and treat microbial contamination in poultry. Although there are several studies on the antimicrobial properties of essential oils, there is still no review that simultaneously compiles information on the leading antimicrobial role of essential oils from Citrus aurantifolia (CAEO), Ocimum basilicum (OBEO), and Allium sativum (ASEO) in poultry. Awareness of the antimicrobial role of these substances opens the door to encouraging their use in natural antimicrobial protocols and discouraging harmful synthetics in poultry. This review aimed to compile information on applying CAEO, OBEO, and ASEO as antimicrobials in poultry farming. The available literature suggests that these essential oils can proportionately align with the poultry industry's demands for microbiologically safe food products.

6.
Sci Rep ; 14(1): 574, 2024 01 05.
Artículo en Inglés | MEDLINE | ID: mdl-38182724

RESUMEN

Psidium guajava L., a fruit crop belonging to the Myrtaceae family, is highly valued for its nutritional and medicinal properties. The family exhibits a diverse chemical profile of essential oils and serves as a valuable resource due to its ecological interactions, adaptability, and dispersal capacity. The Myrtaceae family has been extensively studied for its terpenoids. Genetic studies have focused on foliar terpene yield in species from the Eucalypteae and Melaleucaceae tribes. To understand the evolutionary trends in guava breeding, this study predicted terpene synthase genes (TPS) from different cultivars. Through this analysis, 43 full-length TPS genes were identified, and approximately 77% of them exhibited relative expression in at least one of the five investigated plant tissues (root, leaf, bud, flower, and fruit) of two guava cultivars. We identified intra-species variation in the terpene profile and single nucleotide polymorphisms (SNPs) in twelve TPS genes, resulting in the clustering of 62 genotypes according to their essential oil chemotypes. The high concentration of sesquiterpenes is supported by the higher number of TPS-a genes and their expression. The expansion for TPS sub-families in P. guajava occurred after the expansion of other rosids species. Providing insight into the origin of structural diversification and expansion in each clade of the TPS gene family within Myrtaceae. This study can provide insights into the diversity of genes for specialized metabolites such as terpenes, and their regulation, which can lead to a diverse chemotype of essential oil in different tissues and genotypes. This suggests a mode of enzymatic evolution that could lead to high sesquiterpene production, act as a chemical defense and contribute to the adaptive capacity of this species to different habitats.


Asunto(s)
Myrtaceae , Aceites Volátiles , Psidium , Psidium/genética , Fitomejoramiento , Terpenos
7.
Rev. bras. oftalmol ; 83: e0014, 2024. tab
Artículo en Portugués | LILACS | ID: biblio-1550776

RESUMEN

RESUMO Objetivo: Avaliar a acurácia de médicos generalistas em reconhecer a retinopatia diabética por meio da retinografia colorida, com um curso de capacitação com duração de 2 horas, comparando a capacidade de rastrear e classificar a retinopatia diabética em relação ao exame presencial com oftalmologista. Métodos: No primeiro braço do estudo, de 142 pacientes diabéticos incluídos, avaliaram-se 274 olhos, em que esses pacientes foram examinados com oftalmoscópio binocular indireto e classificados quanto ao grau da retinopatia diabética. No segundo braço do estudo, 14 médicos não especialistas em oftalmologia receberam um treinamento de 2 horas para o diagnóstico de retinopatia diabética com a retinografia colorida e se aferiu a acurácia desses profissionais em rastrear a retinopatia diabética antes e depois do curso de capacitação, utilizando as retinografias obtidas na primeira frente do estudo. Resultados: Verificou-se aumento significativo da sensibilidade (82% para 99%) e da especificidade (44% para 83%) na detecção da retinopatia diabética pelos médicos generalistas, com o curso de capacitação. Conclusão: O médico generalista capacitado pode avaliar a retinopatia diabética por meio da retinografia colorida, sendo o programa de rastreamento dessa complicação do diabetes uma proposta viável e benéfica ao país.


ABSTRACT Objective: To assess the accuracy of general practitioners in recognizing diabetic retinopathy through color retinal retinography, with a two-hour training course, by comparing the capacity of screening and classifying diabetic retinopathy. Methods: In the first arm of the study, of 142 diabetic patients included, 274 eyes were evaluated, and these patients were examined with an indirect binocular ophthalmoscope and classified according to the degree of diabetic retinopathy. In the second arm of the study, 14 physicians who are not specialists in ophthalmology received two-hour training to diagnose diabetic retinopathy with color retinography, and the accuracy of these professionals in screening for diabetic retinopathy before and after the training course was measured using the photographic images obtained on the first front of the study. Results: There was a significant increase in sensitivity (82% to 99%) and specificity (44% to 83%) in detecting diabetic retinopathy by general practitioners, after attending the training. Conclusion: Qualified general practitioners can assess diabetic retinopathy through color retinography, and the screening program for this diabetes complication is a viable and beneficial proposal for the country.


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Tamizaje Masivo/métodos , Retinopatía Diabética/diagnóstico por imagen , Técnicas de Diagnóstico Oftalmológico , Médicos Generales/educación , Atención Primaria de Salud , Brasil , Diabetes Mellitus
9.
Plast Reconstr Surg Glob Open ; 11(2): e4809, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36751505

RESUMEN

Approximately 80% of patients submitted to radiotherapy develop radiodermatitis. Photobiomodulation based on light-emitted diode (LED) is one of the therapeutic strategies for treating inflammation. This study aimed to investigate the effect of the photobiomodulation with two wavelengths, in an acute radiodermatitis animal model. Methods: Twenty rats were submitted to one radiotherapy session. After 15 days, the rats that developed radiodermatitis were divided into control groups, LED-630 nm, LED-850 nm, and LED-630 + 850 nm. The treatment regimen was one session lasting 10 minutes on alternate days for 21 days. We analyzed macroscopy aspects (RTOG scale), vascular density, dermal appendages, VEGF-a, TNF-alpha, MMP-9, and MMP-9 genic expression level. Results: All LED groups revealed a two-point reduction on the radiodermatitis severity grade compared with the baseline classification. Dermal appendage and vascular analysis showed a higher counting in all LED groups compared to control. This study showed dermal appendages twice in the 630/850 nm group compared with the control group. The 630/850 nm group showed six times more arterioles than the control group. Regarding genic expression, this study showed a 10-fold decrease between LED-630 nm versus LED-630 + 850 nm (P = 0.02) interleukin-10 expression and a 12-fold decrease between control versus LED-630 nm (P = 0.006) and LED-850 nm (P = 0.002) in TNF-alpha. Conclusion: LED (630 nm, 850 nm, and 630 nm + 850 nm) showed benefit in the treatment of radiodermatitis, and the association of the 630 nm + 850 nm and 630 nm parameters demonstrated the best macroscopic and microscopic results.

11.
Int. j. cardiovasc. sci. (Impr.) ; 36: e20220050, 2023. tab
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1430492

RESUMEN

Abstract Background Controlling blood pressure and glycemic levels is a challenge that requires innovative solutions. Objective To assess the feasibility of implementing a text message intervention among low-income primary care patients, as well as to assess self-reported behavioral change. Methods A set of 200 text messages was developed on healthy eating, physical activity, adherence, and motivation. Participants from Vale do Mucuri, MG, Brazil diagnosed with diabetes or hypertension or undergoing screening for those diseases, received 5 to 8 messages per week for 6 months. They answered a questionnaire to report their satisfaction and behavioral changes. Results Of the 136 patients, 117 (86.0%) answered the questionnaire. Most reported that the messages were very useful (86.3%), easy to understand (90.6%), and were very helpful for behavioral change (65.0%); 84.6% reported that they had started eating healthier. The most frequent reported lifestyle changes were: improved diet quality (85.5%), reduced portions (65.8%), and weight loss (56.4%). The majority of patients shared the messages (60.7%) with family or other acquaintances, considered the number of messages to be adequate (89.7%) and would recommend the program to others (95.7%). Conclusion An intervention based on text messages to promote behavioral change in patients with hypertension or diabetes in primary care is feasible in low-resource settings. Future studies are needed to assess the program's long-term effects on clinical outcomes.

12.
Plants (Basel) ; 11(17)2022 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-36079598

RESUMEN

Phosphorus is a non-renewable natural resource that will run out of reserves in the upcoming decades, making it essential to understanding the inheritance of nutrient use efficiency for selecting superior genotypes. This study investigated the additive and non-additive effects of commercially relevant traits for the popcorn crop (grain yield-GY, popping expansion-PE, and expanded popcorn volume per hectare-PV) in different conditions of phosphorus (P) availability in two locations in Rio de Janeiro State, Brazil. Six S7 lines previously selected for P use-L59, L70, and P7, efficient and responsive; and L54, L75, and L80, inefficient and non-responsive-were used as testers in crosses with 15 progenies from the fifth cycle of intrapopulation recurrent selection of UENF-14, with adaptation to the North and Northwest regions of Rio de Janeiro State. Using the Griffing diallel analysis, P use efficiency was predominantly additive in the expression of PE, and non-additive effects were prominent for GY and PV. For obtaining genotypes that are efficient for phosphorus use, it is recommended that heterosis with parents that provide additive gene accumulation for PE be explored.

13.
Fisioter. Pesqui. (Online) ; 29(3): 291-295, jul.-set. 2022. tab
Artículo en Portugués | LILACS-Express | LILACS | ID: biblio-1421482

RESUMEN

RESUMO Pacientes oncológicos desenvolvem problemas cardíacos frequentes devido à toxidade dos quimioterápicos, com consequente impacto na capacidade funcional (CF) e na qualidade de vida (QV). O treinamento muscular inspiratório (TMI) pode ser um recurso terapêutico viável, já que estudos de causa-efeito demonstraram melhora da CF e da QV em outras populações. Contudo, seu efeito ainda não foi avaliado em pacientes cardio-oncológicos. Assim, o objetivo deste estudo foi descrever o efeito de um programa de TMI sobre a CF e a QV de uma paciente com cardiotoxicidade: LDM, com 41 anos, mulher e sedentária, que desenvolveu insuficiência cardíaca após tratamento quimioterápico. A QV foi avaliada pelo teste de Minnesota. Foram avaliados também a força muscular inspiratória dinâmica (S-Index) e o limiar glicêmico (LG) dos músculos inspiratórios. O LG foi determinado pela glicemia capilar por meio do glicosímetro digital (Accu-Chek - Roche) no menor valor da glicemia da carga correspondente ao teste muscular inspiratório incremental (TMII). A progressão da carga foi realizada a cada duas semanas. Ao final de dois meses, todos os testes foram reaplicados. No teste de Minnesota, os valores relacionados à CF, antes e após o TMI, foram de 36 vs. 8 (melhora de 78%); aos aspectos clínicos e psicológicos foram de 32 vs. 7 (melhora de 78%), a S-Index foram de 41 vs. 51cmH2O (melhora de 24%). O TMI melhorou a CF e a QV de uma paciente cardio-oncológica, configurando-se como um recurso terapêutico viável para essa população.


RESUMEN Los pacientes con cáncer desarrollan problemas cardíacos frecuentes debido a la cardiotoxicidad de la quimioterapia, con el consiguiente impacto en la capacidad funcional (FC) y la calidad de vida (CV). El entrenamiento muscular inspiratorio (IMT) puede ser un recurso terapéutico viable, ya que los estudios de causa-efecto han demostrado una mejora en la FC y la CV en otras poblaciones. Sin embargo, su efecto aún no se ha evaluado en pacientes cardio-oncológicos. Por lo tanto, el objetivo de este estudio fue describir el efecto de un programa de IMT sobre la FC y la CV de un paciente con cardiotoxicidad: LDM, 41 años, mujer y sedentaria, que desarrolló insuficiencia cardíaca después del tratamiento de quimioterapia. La CV se evaluó mediante la prueba de Minnesota. También se evaluaron la fuerza muscular inspiratoria dinámica (índice S) y el umbral glucémico (LG) de los músculos inspiratorios. El LG se determinó por glucemia capilar mediante el glucómetro digital (Accu-Chek - Roche) al valor más bajo de la carga glucélica correspondiente a la prueba muscular inspiratoria incremental (IMI). La progresión de la carga se realizó cada dos semanas. Después de dos meses, todas las pruebas se volvieron a aplicar. En la prueba de Minnesota, los valores relacionados con la FC, antes y después de THE, fueron 36 vs. 8 (78% de mejora); los aspectos clínicos y psicológicos fueron 32 vs. 7 (mejora del 78%), el índice S fue de 41 vs. 51cmH2O (mejora del 24%). El IMT mejoró la FC y la CV de un paciente cardio-oncológico, constituyendo un recurso terapéutico viable para esta población.


ABSTRACT Cancer patients develop frequent cardiac problems due to chemotherapy toxicity, which impacts functional capacity (FC) and quality of life (QoL). Inspiratory Muscle Training (IMT) may be a viable therapeutic resource since cause-effect studies have shown improvement in FC and QoL in other populations. However, its effect was not evaluated in cardio-oncology patients. The study aimed to describe the effect of an IMT program on the FC and QoL of a patient with cardiotoxicity, LDM, aged 41 years, female and, sedentary that developed heart failure after chemotherapy. The QoL was evaluated by the Minnesota test. Dynamic Inspiratory Muscle Strength (S-Index) and Glycemic Threshold (GT) of the inspiratory muscles were also evaluated. The GT was determined by capillary glycemia with a digital glucometer (Accu-Chek - Roche), at the lowest value of glycemia of the load corresponding to the Incremental Inspiratory Muscle Test (IIMT). The load progression was performed every two weeks. After two months, all tests were reapplied. In the Minnesota test, the values related to FC, pre and post IMT, were 36 v. 8 (78% improvement); the clinical and psychological aspects 32 v. 7 (78% improvement); S-Index was 41 v. 51cmH2O (24% improvement). IMT improved the FC and QoL of a cardio-oncology patient, configuring itself as a possible and viable therapeutic resource for this population.

14.
Diabetes Metab Syndr ; 16(8): 102552, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35921764

RESUMEN

BACKGROUND AND AIMS: Our aim was to summarize, analyze and disseminate the current state of knowledge about the barriers and facilitators in postpartum reclassification that women who have had gestational diabetes face. METHODS: Data collection was carried out from January to March 2021 in PubMed, Scopus, Web of Science (WoS), Embase and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases. RESULTS: Of the 361 studies initially retrieved in the search, 32 articles published between 2010 and 2020 were selected because they were within our objective. CONCLUSION: Multiple barriers and interventions were found regarding the reclassification of the glycemic status of women who had Gestational Diabetes during pregnancy. Therefore, further studies are needed to achieve a better intervention for this condition.


Asunto(s)
Diabetes Gestacional , Femenino , Humanos , Periodo Posparto , Embarazo
15.
Food Chem X ; 13: 100237, 2022 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-35498978

RESUMEN

This study aimed to use the non-conventional microwave-assisted extraction (MAE) and pressurized liquid extraction (PLE) techniques for recovering bioactive compounds from tomato pomace, a valuable agro-industrial waste. The raw material was previously dried using a spouted bed dryer and then submitted to extraction with green solvents. A response surface methodology (RSM) performed the optimization of MAE and PLE. Next, the yield and the antioxidant activity results were maximized, and the lycopene content of the optimum MAE and PLE extracts was assessed by high-performance liquid chromatography (HPLC). Additionally, a fraction of raw material was oven dried as a comparison. The PLE extract exhibited the highest antioxidant activity, whereas the MAE extract showed the highest lycopene content (59.66 µg lycopene/g extract), which represents a 66.93% lycopene recovery compared to a standard technique with acetone. The remarkable results show that the non-conventional drying and extraction techniques were effective in valorizing this neglected material.

16.
Artículo en Inglés | MEDLINE | ID: mdl-35293562

RESUMEN

This study represents the first overview of the epidemiological dynamics of SARS-CoV-2 in Espirito Santo (ES) State, Brazil, filling in knowledge on this topic, observing data collected in the State, and aiming at understanding the epidemiological dynamics of the virus in ES, as well as its possible routes of transmission and dissemination. . Our results highlight that, so far, nine lineages have been identified with ES State. The B.1.1.33 lineage was the first with the highest occurrence in ES, remaining predominant until September 2020. The second predominant lineage was Gamma, representing 45% of the samples. The Delta lineage appears on the State scene, proving to be the next dominant lineage. This research allowed us to understand how the lineages advanced and were distributed in the State, which is important for future work, also making it possible to guide sanitary control measures. Data analyses were made through the GISAID database for ES State showed that the pandemic in the State has been evolving dynamically with lineage replacements over the months since the first notification.


Asunto(s)
COVID-19 , Pandemias , Brasil/epidemiología , COVID-19/epidemiología , Humanos , Simulación de Dinámica Molecular , SARS-CoV-2
17.
Biotechnol Appl Biochem ; 69(5): 1843-1856, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34496084

RESUMEN

Leaves of Croton argyrophyllus contain essential oil with promising active components for the development of drugs and botanical insecticides. In this study, we evaluated the enzymatic pretreatment process to increase the extraction of essential oil from fresh and dried leaves of C. argyrophyllus. Pretreatment was carried out using a crude multienzymatic extract obtained via solid-state fermentation of forage palm by Aspergillus niger, and the extraction was performed by hydrodistillation. A Doehlert matrix was used to optimize the enzymatic pretreatment variables temperature and enzymatic extract. The effect of pretreatment time was also investigated. At optimum experimental conditions, 41.34°C, 140 min, and 130.73 mL of enzyme in 369.27 mL of water, the essential oil yield from fresh leaves subjected to enzymatic pretreatment increased by 9.35% and that from dry leaves by 6.77%. Based on chromatographic analysis (GC-MS), no compound was degraded in the extraction process. Micromorphological analysis confirmed the rupture of the glandular trichomes, favoring essential oil release. Therefore, enzymatic pretreatment associated with hydrodistillation increased the essential oil yield and is a promising application to obtain essential oil for therapeutic purposes without altering its composition.


Asunto(s)
Croton , Aceites Volátiles , Aceites Volátiles/análisis , Aceites Volátiles/química , Aceites Volátiles/farmacología , Croton/química , Aspergillus niger , Hojas de la Planta/química , Extractos Vegetales/química
18.
Prep Biochem Biotechnol ; 52(8): 885-893, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34965202

RESUMEN

Solid state fermentation (SSF) simulates the natural conditions fungal growth, where the amount of water in the reaction medium must be restricted, thus limiting the use of liquid substrate. An analytical strategy to deal with this limitation is the design of blending with constraints. Thus, the objective of the work was to optimize two constrained waste mixtures for the production of lipase by Penicillium roqueforti ATCC 10110 under SSF, using different substrates that combine solid and liquid waste. For this, the best fermentation time was determined through a fermentative profile, afterwards a restricted-mix design with lower and upper limits of the components of mixture I (cocoa residue, solid palm oil residue and liquid palm oil residue) and II (cocoa residue, mango residue and palm oil residue liquid palm) was applied. By means of Pareto and contour graphs, the maximum production points of lipase in mixtures I (6.67 ± 0.34 U g-1) and II (6.87 ± 0.35 U g-1) were obtained. The restricted mixture design proved to be a promising tool in the production of lipase by P. roqueforti ATCC 10110 under SSF since the use of restrictions is useful when intending to combine solid and liquid residues in fermentation processes.


Asunto(s)
Residuos Industriales , Lipasa , Fermentación , Lipasa/metabolismo , Aceite de Palma , Penicillium
19.
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1365420

RESUMEN

ABSTRACT This study represents the first overview of the epidemiological dynamics of SARS-CoV-2 in Espirito Santo (ES) State, Brazil, filling in knowledge on this topic, observing data collected in the State, and aiming at understanding the epidemiological dynamics of the virus in ES, as well as its possible routes of transmission and dissemination. . Our results highlight that, so far, nine lineages have been identified with ES State. The B.1.1.33 lineage was the first with the highest occurrence in ES, remaining predominant until September 2020. The second predominant lineage was Gamma, representing 45% of the samples. The Delta lineage appears on the State scene, proving to be the next dominant lineage. This research allowed us to understand how the lineages advanced and were distributed in the State, which is important for future work, also making it possible to guide sanitary control measures. Data analyses were made through the GISAID database for ES State showed that the pandemic in the State has been evolving dynamically with lineage replacements over the months since the first notification.

20.
Braz. J. Pharm. Sci. (Online) ; 58: e21609, 2022. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1420501

RESUMEN

Abstract The potential of the biome caatinga (exclusive from northeastern Brazil) has been evaluated in recent research for application in the pharmaceutical industry. Among the species of medicinal plants from caatinga, one can highlight the Commiphora leptophloeos (umburana), which has been used as infusions and syrups by the regional population for inflammatory and infectious diseases. Essential oils from umburana leaves and barks were obtained in a Clevenger apparatus and analyzed by gas chromatography/mass spectrometry, and total phenolic and flavonoids were determined by spectrophotometric analysis. It was observed that a large part of the major compounds present in the essential oil is described as having antitumor activity, enabling research in investigational oncology with umburana (C. leptophloeos). In addition, some little explored components have been identified, such as cadinene, alpha-selinene, and elemenone. Despite being easily found in several plants, there are no clinical trials involving their biological activity in a well-defined isolated form, which could make exploring new studies possible. Furthermore, the presence of phenolic compounds and flavonoids allows future studies about the potential antimicrobial and antioxidant activity.


Asunto(s)
Plantas Medicinales/clasificación , Aceites Volátiles/análisis , Hojas de la Planta/clasificación , Bursera/efectos adversos , Espectrometría de Masas/métodos , Cromatografía de Gases/métodos , Industria Farmacéutica/clasificación
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