Integrative open workflow for confident annotation and molecular networking of metabolomics MSE/DIA data.

Liquid chromatography coupled with high-resolution mass spectrometry data-independent acquisition (LC-HRMS/DIA), including MSE, enable comprehensive metabolomics analyses though they pose challenges for data processing with automatic annotation and molecular networking (MN) implementation. This motivated the present proposal, in which we introduce DIA-IntOpenStream, a new integrated workflow combining open-source software to streamline MSE data handling. It provides 'in-house' custom database construction, allows the conversion of raw MSE data to a universal format (.mzML) and leverages open software (MZmine 3 and MS-DIAL) all advantages for confident annotation and effective MN data interpretation. This pipeline significantly enhances the accessibility, reliability and reproducibility of complex MSE/DIA studies, overcoming previous limitations of proprietary software and non-universal MS data formats that restricted integrative analysis. We demonstrate the utility of DIA-IntOpenStream with two independent datasets: dataset 1 consists of new data from 60 plant extracts from the Ocotea genus; dataset 2 is a publicly available actinobacterial extract spiked with authentic standard for detailed comparative analysis with existing methods. This user-friendly pipeline enables broader adoption of cutting-edge MS tools and provides value to the scientific community. Overall, it holds promise for speeding up metabolite discoveries toward a more collaborative and open environment for research.

Aporphine Alkaloids from Ocotea puberula with Anti-Trypanosoma Cruzi Potential - Activity of Dicentrine-ß-N-Oxide in the Plasma Membrane Electric Potentials.

One new aporphine, dicentrine-ß-N-oxide (1), together with five related known alkaloids dehydrodicentrine (2), predicentrine (3), N-methyllaurotetanine (4), cassythicine (5), and dicentrine (6) were isolated from the leaves of Ocotea puberula (Lauraceae). Antiprotozoal activity of the isolated compounds was evaluated in vitro against trypomastigote forms of Trypanosoma cruzi. Among the tested compounds, alkaloid 1 exhibited higher potential with EC50 value of 18.2 µM and reduced toxicity against NCTC cells (CC50 >200 µM - SI>11.0), similar to positive control benznidazole (EC50 of 17.7 µM and SI=10.7). Considering the promising results of dicentrine-ß-N-oxide (1) against trypomastigotes, the mechanism of parasite death caused by this alkaloid was investigated. As observed, this compound reached the plasma membrane electric potential directly after 2 h of incubation and triggered mitochondrial depolarization, which probably leads to trypomastigote death. Therefore, dicentrine-ß-N-oxide (1), reported for the first time in this work, can contribute to future works for the development of new trypanocidal agents.

A espiritualidade dos profissionais de saúde da oncologia / The spirituality of oncology health professionals / La espiritualidad de los profesionales de salud de la oncología

Objetivo: Identificar a influência da espiritualidade no trabalho dos profissionais de saúde da oncologia de dois hospitais do Norte de Minas Gerais. Método: o estudo trata-se de uma pesquisa quantitativa, transversal e descritiva. Questão norteadora: influência da espiritualidade no trabalho dos profissionais de saúde da oncologia. Resultado: nenhum profissional de saúde é considerado totalmente sem espiritualidade, sendo que 15,9% se consideram muito religiosa e 84,1% se consideram moderadamente religiosa; e quando se perguntou: o quanto se considera pessoa espiritualizada? 15,9% se consideram muito espiritualizada e 84,1% se consideram moderadamente espiritualizada. Conclusão: a presente pesquisa denota-se uma tendência baixa quanto à frequência com que esses profissionais buscam por um apoio religioso. Constatou-se, também, a escassez de serviços de apoio religioso no âmbito hospitalar

Objective:To identify the influence of spirituality on the work of oncology health professionals from two hospitals in the North of Minas Gerais. Method: the study is a quantitative, cross-sectional and descriptive research. Guiding question: influence of spirituality on the work of oncology health professionals. Results: no health professional is considered totally without spirituality, 15.9% consider themselves very religious and 84.1% consider themselves moderately religious; and when asked: how much do you consider yourself a spiritual person? 15.9% consider themselves very spiritualized and 84.1% consider themselves moderately spiritualized. In the interpretation of the results it is noticed that the participants do not know how to distinguish religiosity from spirituality, because it was exactly the same result. Conclusion: the present research shows a low tendency as to the frequency with which these professionals seek for a religious support. It was also verified the shortage of religious support services in the hospital

Objetivo: Identificar la influencia de la espiritualidad en el trabajo de los profesionales de salud de la oncología de dos hospitales del Norte de Minas Gerais. Método: el estudio se trata de una investigación cuantitativa, transversal y descriptiva. Cuestión orientadora: influencia de la espiritualidad en el trabajo de los profesionales de salud de la oncología. Resultado:ningún profesional de salud es considerado totalmente sin espiritualidad, siendo que el 15,9% se considera muy religioso y el 84,1% se considera moderadamente religiosa; y cuando se preguntó: o cuánto se considera persona espiritualizada? El 15,9% se considera muy espiritualizada y el 84,1% se considera moderadamente espiritualizada. Conclusión: la presente investigación denota una tendencia baja en cuanto a la frecuencia con que estos profesionales buscan un apoyo religioso. Se constató también la escasez de servicios de apoyo religioso en el ámbito hospitalario

Interaction of dicentrinone, an antitrypanosomal aporphine alkaloid isolated from Ocotea puberula (Lauraceae), in cell membrane models at the air-water interface.

In the present work, the oxoaporphine alkaloid dicentrinone was isolated, for the first time, from leaves of Ocotea puberula (Lauraceae). This alkaloid exhibited antiparasitic activity against trypomastigote forms of Trypanosoma cruzi (IC50 of 16.4 ± 1.7 µM), similar to the positive control benznidazole (IC50 of 18.7 ± 4.1 µM), reduced mammalian cytotoxicity (CC50 > 200 µM), and a selectivity index (SI) higher than 12. These results were correlated with the effects observed using cellular membrane models, represented by 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE), in Langmuir monolayers. Dicentrinone was incorporated in the films, submitted to lateral compression, and characterized by tensiometry. As observed in compression-decompression and time-stability curves, dicentrinone expanded the lipid monolayers, decreased the compressional modulus of the film, and reduced the stability of the monolayer. Brewster Angle Microscopy and interfacial Infrared Spectroscopy showed that dicentrinone causes the monolayers to be segregated in phases, and to increase the number of gauche/trans conformers ratio for the lipid acyl methylene groups, indicating configurational disorder. As a result, dicentrinone caused a disturbance in the cell membrane models, altering the physicochemical properties of the lipid surface such as thermodynamic, rheological, morphological, and structural aspects. These results can be useful to understand the interactions between dicentrinone and lipid biological surfaces at the molecular level.