Anais da Academia Brasileira de Ciencias最新文献_第6页

Racial equity in academia: Why Brazil still needs to be bolder in faculty hiring policies. 学术界的种族平等：为什么巴西在教师招聘政策上仍然需要更加大胆。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-18 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250121

Wagner F Magalhães, Itan Cruz

引用次数: 0

Assessing actinic cheilitis oncogenic potential via micronucleus assay. 通过微核试验评估光化性唇炎的致癌潜力。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-18 DOI: 10.1590/0001-3765202520250104

Lucas A DA Mota Santana, Gina Délia Roque-Torres, Rajiv G Gopalsamy, Lysandro P Borges, Daniel Araki Ribeiro, Virgínia K S Silva, Cleverson Luciano Trento, Wilton M Takeshita

引用次数: 0

Assessment of Surface Radiogenic Heat Flow in Volcanic Rocks of Trindade Island, South Atlantic Ocean, Brazil. 巴西南大西洋Trindade岛火山岩地表辐射成因热流评价。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-18 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240353

Kenji F Motoki, Thomas F C Campos, José Humberto Araujo, Anderson C Santos, Maria Elisa P Gomes, Susanna Elenora Sichel, Estefan M Fonseca, Lucas G P Monteiro, Gabriel S Nogueira

{"title":"Assessment of Surface Radiogenic Heat Flow in Volcanic Rocks of Trindade Island, South Atlantic Ocean, Brazil.","authors":"Kenji F Motoki, Thomas F C Campos, José Humberto Araujo, Anderson C Santos, Maria Elisa P Gomes, Susanna Elenora Sichel, Estefan M Fonseca, Lucas G P Monteiro, Gabriel S Nogueira","doi":"10.1590/0001-3765202520240353","DOIUrl":"https://doi.org/10.1590/0001-3765202520240353","url":null,"abstract":"Heat loss from Earth's interior, driven by conduction and convection, influences lithospheric thermal regimes. This heat originates from mantle convection, primordial planetary accretion, and the decay of radioactive heat-producing elements (RHPE: U-238, U-235, Th-232 and K-40), which contribute around 98% of Earth's radiogenic heat production, crucial for surface radioactive heat flux (SRHF). Understanding RHPE is key to studying geothermal dynamics, especially in volcanic regions like Trindade Island, Brazil. This study aims to: Quantify U, Th, and K concentrations in volcanic soils; map their spatial distribution, detect anomalies and evaluate radiogenic heat production and flux. Three methods were used: whole-rock ICP analyses for geochemical characterization, laboratory gamma spectrometry (LabGRS), and in situ gamma spectrometry (surfGRS) for spatial coverage. A total of 77 samples and 481 measurement points were analyzed and SRHF was measured. Results show that the thorium contributes most to SRHF, providing insights into heat generation and mantle-crust volcanic interactions. This study provides critical insights into radiogenic heat generation and its role in lithospheric thermal evolution, offering a refined understanding of heat production in oceanic volcanic settings. The findings enhance geophysical and geochemical models of heat flux, contributing to broader studies on mantle-crust interactions and geothermal energy potential.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240353"},"PeriodicalIF":1.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144939534","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

Technological innovation for sustainable development as a catalyst for Brazil's future. 技术创新促进可持续发展是巴西未来的催化剂。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-18 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250459

Pedro Henrique González, Vanessa DE Almeida Guimarães, Luisa Maria Diele-Viegas

引用次数: 0

Mesenchymal stem cells for the treatment of articular cartilage defects of the knee: an overview of systematic reviews. 间充质干细胞治疗膝关节软骨缺损：系统综述。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-18 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241426

Eduardo B DE Sousa, Renata Akemi M Matsui, Leonardo C Boldrini, Leandra S Baptista, José Mauro Granjeiro

{"title":"Mesenchymal stem cells for the treatment of articular cartilage defects of the knee: an overview of systematic reviews.","authors":"Eduardo B DE Sousa, Renata Akemi M Matsui, Leonardo C Boldrini, Leandra S Baptista, José Mauro Granjeiro","doi":"10.1590/0001-3765202520241426","DOIUrl":"https://doi.org/10.1590/0001-3765202520241426","url":null,"abstract":"There is no consensus on the ideal type, dose, expansion, and differentiation of MSCs for treating knee cartilage defects. Our goal was to perform an overview of systematic reviews regarding the use of MSCs for the treatment of articular cartilage lesions of the knee. The overview of systematic reviews followed the Population (patients aged between 18 and 50 years with traumatic knee articular cartilage lesions), Intervention (MSCs treatment), Comparison (autologous chondrocyte implantation or microfracture), and Outcomes (magnetic resonance imaging or second-look knee arthroscopy) matrix. No language restrictions were applied. We assessed methodological quality, reporting standards, and evidence levels. A total of 529 records were retrieved from six databases. After duplicate removal and eligibility screening, nine systematic reviews were included, and three were updated with recent data. Most reviews suggested a positive effect of MSCs on cartilage regeneration; however, considerable heterogeneity was observed regarding MSC source, preparation methods, and outcome measures. MSCs show promise in the treatment of knee cartilage defects. Nonetheless, due to methodological differences and limited high-quality evidence, no standardized clinical protocol can yet be recommended. Further research is needed to establish consensus and guide clinical applications.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241426"},"PeriodicalIF":1.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144939547","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

Listening to the bats of Carajás: Bioacoustics in a mosaic of forests, savannas, and industrial mining in the Brazilian Amazonia. 聆听Carajás的蝙蝠：巴西亚马逊地区森林、稀树草原和工业采矿马赛克中的生物声学。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-11 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240994

Lidiane Gomes, Enrico Bernard

{"title":"Listening to the bats of Carajás: Bioacoustics in a mosaic of forests, savannas, and industrial mining in the Brazilian Amazonia.","authors":"Lidiane Gomes, Enrico Bernard","doi":"10.1590/0001-3765202520240994","DOIUrl":"10.1590/0001-3765202520240994","url":null,"abstract":"Bats emit echolocation calls for orientation, foraging, and social interactions. These calls are mostly species-specific, making them reliable for inventories and assessing habitat use - characteristics particularly useful in large, species-rich, but poorly sampled areas. This is the case of Carajás, in Brazilian Amazonia, a mosaic of cave-rich dense forests and unique metalophilous savannas (known as canga), harboring a rich bat fauna alongside industrial iron ore mining, underscoring the need to preserve biodiversity. We used bioacoustics (142,000 minutes of recording) to inventory bats at 61 points in Carajás between 2021 and 2023, and identified 43 sonotypes of seven bat families, including species rarely recorded with capture nets. Eleven species were recorded for the first time in Carajás. Species richness varied among habitats - but cangas had greater richness stability and a more distinct species composition. All areas with imminent mining had high bat richness. Richness in a post-mined area increased, possibly indicating resilience of some species. By providing a reference sound library for bats in Carajás, we proved the usefulness of biacoustics to improve the environmental licensing processes involving mining in biodiversity-rich areas, useful not only for Amazonia but also for other tropical habitats with high bat species richness.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240994"},"PeriodicalIF":1.1,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833773","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

Morphology and morphometry of blood cells of two species of freshwater stingrays (Chondrichthyes: Potamotrygoninae) from the lower Solimões river, Amazon. 亚马逊Solimões河下游两种淡水黄貂鱼（Chondrichthyes: Potamotrygoninae）的血细胞形态和形态测定。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-11 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241149

Marcio Quara DE C Santos, Flávia Dayane F Farias, Paulo Henrique R Aride, Adriano T Oliveira

{"title":"Morphology and morphometry of blood cells of two species of freshwater stingrays (Chondrichthyes: Potamotrygoninae) from the lower Solimões river, Amazon.","authors":"Marcio Quara DE C Santos, Flávia Dayane F Farias, Paulo Henrique R Aride, Adriano T Oliveira","doi":"10.1590/0001-3765202520241149","DOIUrl":"10.1590/0001-3765202520241149","url":null,"abstract":"Cytomorphological evaluation of peripheral blood provides information about the health status of animals, in addition to being indicators of environmental contamination. However, reference data regarding the size and shape of elasmobranch blood cells is limited. This work aimed to determine the morphological and morphometric of Potamotrygon motoro and Potamotrygon orbignyi blood cells. The stingrays were captured in white water environments in the lower Solimões River region, state of Amazonas, Brazil. Blood was obtained through puncture of the branchial artery using syringes with 10% EDTA. Morphological and morphometric analyses of the cells were carried out on blood samples stained with May Grunwald-Giemsa-Wright. Erythrocytes, erythroblasts (immature erythrocytes), thrombocytes, lymphocytes, monocytes, heterophils, eosinophils and basophils were identified in the blood of both species. No evidence of erythrocyte abnormalities was found, and the blood cell's morphological characteristics were similar to those described for other species of freshwater stingrays. Despite the identical shape, the size of erythrocytes, monocytes and heterophils were significantly different between the stingray species analyzed. The information obtained in this study will assist in developing biomarkers of aquatic contamination and contribute to future research on the clinical diagnosis and conservation of freshwater stingrays.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241149"},"PeriodicalIF":1.1,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833774","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

Hematological parameters and plasma biochemistry of tambaqui (Colossoma macropomum) from fish farms in the Amazon Region. 亚马逊地区养鱼场大比目鱼的血液学参数和血浆生化。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-11 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241449

Flávia Dayane F Farias, Paulo Henrique R Aride, Ariany R S Liebl, Maiko W S Ribeiro, Tiago C Nóbrega, Adriano T DE Oliveira

{"title":"Hematological parameters and plasma biochemistry of tambaqui (Colossoma macropomum) from fish farms in the Amazon Region.","authors":"Flávia Dayane F Farias, Paulo Henrique R Aride, Ariany R S Liebl, Maiko W S Ribeiro, Tiago C Nóbrega, Adriano T DE Oliveira","doi":"10.1590/0001-3765202520241449","DOIUrl":"10.1590/0001-3765202520241449","url":null,"abstract":"The tambaqui Colossoma macropomum is the main species of edible fish originating from fish farming in the Amazon region. This study aimed to determine and compare the blood physiology of tambaqui from fish farms in municipalities in the Metropolitan Region of Manaus, Amazonas, Brazil. Two fish farms were sampled in a semi-excavated pond-type breeding system in the five investigated towns. There were notable variations between Iranduba and Novo Airão in the erythrogram's hematocrit, hemoglobin concentration, and erythrocytes, indicating signs of anemia and dehydration. Fish from Novo Airão and Iranduba have low levels of plasma biochemistry. Low levels of fatty molecules were detected in Manacapuru tambaqui. The leukogram and thrombogram assessed the similarities among tambaqui from different farms and communities and showed significant intraspecific variation. However, as seen by the elevated blood levels of triglycerides and cholesterol, fish from Manacapuru are fed an unsuitable diet. Determining the hematological parameters of C. macropomum tambaqui, the primary native species produced in Brazil, is crucial for defining the boundaries between healthy and diseased conditions for this significant aquaculture species. Supporting rural agricultural regulatory organizations, tambaqui producers, and researchers.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241449"},"PeriodicalIF":1.1,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833772","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

Dismantling Environmental Protections in Brazil: How a New Law Disproportionately Harms Indigenous Peoples and Accelerates Biodiversity Loss. 破坏巴西的环境保护：一项新法律如何不成比例地损害土著人民并加速生物多样性的丧失。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-08 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250663

Ricardo S Magalhães, Maria Conceição L Amazonas, Luisa Maria Diele-Viegas

引用次数: 0

MACL-1 Breast Cancer Secretome Reprograms Fibroblasts to Enhance Inflammation and Tumor Progression. MACL-1乳腺癌分泌组重编程成纤维细胞促进炎症和肿瘤进展

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-08-04 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250146

Rodrigo Junio R Barros, Andreia Laura P Rodrigues, Camila Dourado, Luciana Maria Silva, Jonas Enrique A Perales, Sandra Lauton-Santos, Andreia Barroso, Jader S Cruz

引用次数: 0