Anais da Academia Brasileira de Ciencias最新文献_第2页

Ectomycorrhizas in Lycopodiopsida: their first registry and arbuscular mycorrhiza in Phlegmariurus saururus (Huperziaceae). 石松属植物外生菌根的首次登记和石杉科植物黏痰菌根的丛枝菌根。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241248

María Gabriela Romagnoli, Myriam Del Valle Catania, Marcelo Daniel Arana, Patricia Liliana Albornoz

{"title":"Ectomycorrhizas in Lycopodiopsida: their first registry and arbuscular mycorrhiza in Phlegmariurus saururus (Huperziaceae).","authors":"María Gabriela Romagnoli, Myriam Del Valle Catania, Marcelo Daniel Arana, Patricia Liliana Albornoz","doi":"10.1590/0001-3765202520241248","DOIUrl":"https://doi.org/10.1590/0001-3765202520241248","url":null,"abstract":"Lycophytes show no instances of ectomycorrhizas. Phlegmariurus saururus is the only Huperziaceae that grows in Comechingones biogeographic province, in sunny, exposed surficial rock crevices with poor soil development and very scarce water. As mycorrhizas improve plant fitness in natural ecosystems, it was hypothesized that P. saururus can develop multiple types of fungal symbiosis, including ectomycorrhizas. For detecting, identification and description of mycorrhizas, conventional techniques were employed, and samples of roots were cut with an ultra-microtome to obtain thin (3 µm) and ultrathin (0.1 µm) sections. Phlegmariurus saururus is the first species of Lycopodiopsida where the ectomycorrhizas are evidenced. Arbuscular mycorrhizas and septate endophytes were also found. Ectomycorrhizas can alter the anatomy and hydrophilic properties of roots, improving the adaptation of the plant hosts to habitats with a marked period of drought, as the novel Andean Comechingones habitats. The ectomycorrhizas detected in P. saururus could be considered as an adaptive mechanism related to the successful colonisation of this habitat and can undergo a significant transformation in the lifestyle of fungal symbiosis of lycophytes, which could provide important insights into this morphological and functional evolution.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241248"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extracellular Vesicles in COVID-19: Mechanistic insights and emerging therapeutic strategies. COVID-19的细胞外囊泡：机制见解和新兴治疗策略。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241216

Laiza Camila O Mateus, José Raimundo Correa, Patrícia Elaine DE Almeida

{"title":"Extracellular Vesicles in COVID-19: Mechanistic insights and emerging therapeutic strategies.","authors":"Laiza Camila O Mateus, José Raimundo Correa, Patrícia Elaine DE Almeida","doi":"10.1590/0001-3765202520241216","DOIUrl":"https://doi.org/10.1590/0001-3765202520241216","url":null,"abstract":"The COVID-19 pandemic has profoundly impacted global health, driven in part by the high mutation rate of SARS-CoV-2, which has resulted in the emergence of variants with enhanced transmissibility, virulence, and immune evasion capabilities. This evolving threat highlights the urgent need for innovative therapeutic strategies, as current treatments have shown limited efficacy. In this context, Extracellular Vesicles (EVs) present a promising alternative. EVs play a crucial role in intercellular communication and offer advantages due to their biocompatibility and mechanisms of cellular entry as viruses, making them an important tool against SARS-CoV-2. One of the principal immune evasion strategies employed by SARS-CoV-2 involves the release of EVs capable of transporting viral antigens. Numerous studies have suggested the role of exosomes and microvesicles as carriers of viral components, indicating that EVs can be targets in the progression of infection. Exosomes derived from infected cells could function as biomarkers and as potential drug delivery vehicles. Furthermore, EVs play a regulatory role in immune responses, facilitating cytokine production and antigen presentation. This review aims to elucidate the molecular mechanisms underlying the involvement of EVs in SARS-CoV-2 infection, examine their implications for biomarker development and explore their potential therapeutic applications in COVID-19.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241216"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local influence diagnostics in elliptical multilevel models. 椭圆多层模型的局部影响诊断。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240796

Roberto F Manghi, Érica V Nogueira, Audrey Helen M A Cysneiros

引用次数: 0

Non-catalytic and catalytic co-pyrolysis of neem seed cake and plastic waste: an experimental investigation on product distribution, synergistic interaction and characterization. 印楝籽饼与塑料废弃物非催化和催化共热解：产物分布、协同作用及表征的实验研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241284

Thomas P Stephen Livingston, Petchimuthu Madhu, Chandrasekaran Sowmya Dhanalakshmi, Vadivel Ayyakkannu

{"title":"Non-catalytic and catalytic co-pyrolysis of neem seed cake and plastic waste: an experimental investigation on product distribution, synergistic interaction and characterization.","authors":"Thomas P Stephen Livingston, Petchimuthu Madhu, Chandrasekaran Sowmya Dhanalakshmi, Vadivel Ayyakkannu","doi":"10.1590/0001-3765202520241284","DOIUrl":"https://doi.org/10.1590/0001-3765202520241284","url":null,"abstract":"This investigation elucidates the co-pyrolysis of neem seed cake in combination with plastic waste across a spectrum of mass ratios namely, 0:1, 3:1, 2:1, 1:1, 1:2, 1:3, and 1:0 subjected to varying pyrolytic temperatures from 350°C to 650°C, employing a CuO catalyst as a facilitating agent. The research concentrated on elucidating the effect of reaction temperature and the blend ratio of neem seed cake to plastic waste on the distribution of products and the chemical composition of the resultant pyrolysis oil. The co-pyrolysis performed at a 1:2 ratio of neem seed cake to plastic waste yielded an optimal oil production of 69.4 wt% with maximum positive synergy of 6.25% at 500°C. The physicochemical characteristics of the resulting co-pyrolysis oil demonstrated a striking resemblance to those of conventional fossil diesel. Further analysis through FT-IR revealed the presence of a different range of aromatic components. Quantitative analysis utilizing chromatographic peak area evaluations was undertaken to elucidate the compositional profile of the pyrolysis oils, thereby accentuating the presence of synergistic effects. Furthermore, GC-MS analysis provided empirical validation of the interaction between neem seed cake and waste plastics during co-pyrolysis, as indicated by discernible decrease in the concentration of oxygenated compounds.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241284"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Open access, "piracy" and Article Processing Charges (APC) in Argentina: an informed policy for the national research funding agency. 阿根廷的开放获取、“盗版”和文章处理费（APC）：国家研究资助机构的明智政策。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-12 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241184

María Sol Terlizzi, Mariano Zukerfeld, Fernanda Beigel

{"title":"Open access, \"piracy\" and Article Processing Charges (APC) in Argentina: an informed policy for the national research funding agency.","authors":"María Sol Terlizzi, Mariano Zukerfeld, Fernanda Beigel","doi":"10.1590/0001-3765202520241184","DOIUrl":"https://doi.org/10.1590/0001-3765202520241184","url":null,"abstract":"The article explores the growing influence of Article Processing Charges (APCs) in academic publishing, especially in Argentina, and the challenges they pose for non-hegemonic countries. It highlights the shift from traditional subscription models to open access models, driven by commercial publishers, which often impose significant financial burdens on researchers and institutions. The study aims to examine the issues arising from these models, particularly the commercial open access system, to describes the actions developed by the National Agency for the promotion of Research, Technological Development and Innovation from Argentina, and to discuss some public policy proposals. One major finding is that APCs can exacerbate global inequalities in scientific publishing, as researchers from middle- and low-income countries struggle to afford these fees. This trend can distort research agendas and limit international collaborations. Besides, public research funding agencies play a crucial role in shaping publishing practices, and thus have the power to either promote or hinder more equitable publishing models. The article concludes that non-commercial open access routes, like the \"diamond\" model, should be promoted, and research assessments should shift away from focusing on journal rankings to encourage more responsible research dissemination. The study calls for reforms in both national and global publishing policies.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20241184"},"PeriodicalIF":1.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toxicity of copper (II) metal complexes with amino acids ligands: A study of activity in Aedes aegypti larvae. 铜（II）金属配合物与氨基酸配体的毒性：对埃及伊蚊幼虫的活性研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240842

Eduardo José DE Arruda, Cícera Maria DA Silva, Alessandra R Lima, Glenda B Porzani, Monize M DA Silva, Cláudio T DE Carvalho, Isaías Cabrini, Magda F Fernandes

{"title":"Toxicity of copper (II) metal complexes with amino acids ligands: A study of activity in Aedes aegypti larvae.","authors":"Eduardo José DE Arruda, Cícera Maria DA Silva, Alessandra R Lima, Glenda B Porzani, Monize M DA Silva, Cláudio T DE Carvalho, Isaías Cabrini, Magda F Fernandes","doi":"10.1590/0001-3765202520240842","DOIUrl":"https://doi.org/10.1590/0001-3765202520240842","url":null,"abstract":"The larval control of Aedes aegypti has been done mainly by insecticides, which cause resistance and environmental contamination and have a high-cost development and application. The need for alternative solutions to problems caused by synthetic insecticides has led to studies to find new, active, and less toxic compounds, such as metallo-insecticides. In the present study, the toxic activity of Cu(II) - complexes with the amino acids tryptophan, histidine, methionine, and taurine in Ae. aegypti larvae were evaluated. The Cu(II) - histidine complex showed no toxicity. For the Cu(II) - tryptophan and Cu(II) - methionine complexes, the mortality percentages ranged from 3.16% to 46.55% and 5.46% to 12.42%, respectively. Cu(II) - taurine presented 100% mortality in 24 h at the lowest concentration tested (50 mg L-1, ppm). Considering the concentration range of 50 to 1000 mg L-1 and 24 h of exposure of the larvae to the metal complexes, the series of decreasing toxicity is Cu(II) - taurine > Cu(II) - tryptophan > Cu(II) - methionine > Cu(II) - histidine. From these studies, the Cu (II) - taurine complex can be a candidate to be used as an alternative and less toxic insecticide, low-cost for control of Ae.aegypti larvae.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240842"},"PeriodicalIF":1.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An interdisciplinary approach for evaluating beverage quality in Coffea canephora. 一种跨学科方法评价咖啡饮品质量。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240084

Lucimara C DE Souza, Maria Amélia G Ferrão, Aymbiré Francisco A DA Fonseca, Paulo Sérgio Volpi, Marcone Comerio, Lucas L Pereira, José Augusto M Carvalho, Sérgio H Saraiva, Patrícia F Pinheiro, Adelson L DA Silva Júnior, Taís Cristina B Soares

{"title":"An interdisciplinary approach for evaluating beverage quality in Coffea canephora.","authors":"Lucimara C DE Souza, Maria Amélia G Ferrão, Aymbiré Francisco A DA Fonseca, Paulo Sérgio Volpi, Marcone Comerio, Lucas L Pereira, José Augusto M Carvalho, Sérgio H Saraiva, Patrícia F Pinheiro, Adelson L DA Silva Júnior, Taís Cristina B Soares","doi":"10.1590/0001-3765202520240084","DOIUrl":"https://doi.org/10.1590/0001-3765202520240084","url":null,"abstract":"The objective of this study was to assess the quality of Conilon coffee (Coffea canephora) based on agronomic, physicochemical, sensory profiles, and molecular markers. The dataset comprises 107 genotypes from the Incaper breeding program, evaluated in Marilândia, ES, Brazil. A total of 30 traits and 14 SSR markers were examined, revealing significant genetic variability. Most genotypes exhibited a medium June harvest cycle, uniform ripening, medium-sized beans, high processing yield, and a high percentage of flat and peaberry beans. Physicochemical variables, total titratable acidity, and potassium leaching contributed significantly to the observed variability. Chlorogenic acids (4.82%) and caffeine (2.58%) were the most abundant bioactive compounds. In sensory evaluations, 34 genotypes received scores exceeding 80. 13 markers were recommended for future association mapping studies to identify QTLs influencing the traits evaluated. Results identified genotypes with potential to maximize heterosis and genetic diversity in advancing generations. Among the evaluated genotypes, 34 were identified as promising due to their high sensory scores (≥ 80 points) and favorable agronomic, physicochemical, sensory, and genetic traits. The progeny HS17 stood out as the most divergent in agronomic and genetic traits compared to the other genotypes.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 2","pages":"e20240084"},"PeriodicalIF":1.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Make or buy strategy for Machine Learning Operations - MLOps. 制定或购买机器学习操作策略- MLOps。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240924

Diego Nogare, Ismar F Silveira, Renato Banzai, Maína C Alexandre

引用次数: 0

A new ornithocheiran pterosaur from the Upper Cretaceous (Cenomanian) of Saratov, Russia. 俄罗斯萨拉托夫上白垩纪（Cenomanian）鸟颅翼龙新种。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-04-28 DOI: 10.1590/0001-3765202520241063

Alexander O Averianov

引用次数: 0

Novel biosynthesis of silver nanoparticles catalytically active using extract of non- native species (Eragrostis plana Nees) of Brazilian Pampa. 利用巴西潘帕草原非本地物种（Eragrostis plana Nees）的提取物合成具有催化活性的新型纳米银颗粒。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-04-25 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241276

Valeska M Scuro, Augusto C Dotta Filho, Daniel Rapachi, Ana C Mazzocato, Marcos A Gelesky, Flávio A Pavan

引用次数: 0