Anais da Academia Brasileira de Ciencias最新文献

First assessment of the metazoan parasite community of the Argentine menhaden Brevoortia pectinata (Jenyns, 1842) (Clupeiformes: Alosidae) off Rio de Janeiro, southeastern Brazil. 巴西东南部里约热内卢里约热内卢地区阿根廷menhaden Brevoortia pectinata (Jenyns, 1842) （Clupeiformes: Alosidae）后生动物寄生虫群落的首次评估。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-16 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240683

Luana Benicio, Fabiano Paschoal, Felipe B Pereira

{"title":"First assessment of the metazoan parasite community of the Argentine menhaden Brevoortia pectinata (Jenyns, 1842) (Clupeiformes: Alosidae) off Rio de Janeiro, southeastern Brazil.","authors":"Luana Benicio, Fabiano Paschoal, Felipe B Pereira","doi":"10.1590/0001-3765202520240683","DOIUrl":"https://doi.org/10.1590/0001-3765202520240683","url":null,"abstract":"Brevoortia pectinata is important for the fish industry and crucial for the ecology of South Atlantic marine environments. Despite this importance, the structure of the parasite community of B. pectinata has never been investigated. We evaluated for the first time the parasite community structure from a population of B. pectinata, off the State of Rio de Janeiro, Brazil, and the factors influencing it. One hundred fish were bought from local fisherman at Sepetiba Bay (22°57'44\"S; 43°52'28\"W). Detailed parasitological examination revealed that all fish were parasitized by at least one parasite. We found 14 parasite taxa: 3 monogeneans, 4 copepods, 1 isopod, 3 digenetics and 3 nematode larvae. Presence of both adult and larvae indicated that B. pectinata occupies an intermediate trophic level, acting as definitive and intermediate / paratenic host. The community had low diversity and was dominated by the monogeneans Mazocraeoides georgei and Kuhnia sp., whereas the endoparasites were less prevalent and abundant. Fish schools and host specificity seem to be important for ectoparasite infestation, and host diet influenced the infection by trophic-transmitted endoparasites. Fish sex and body length exerted weak influence in the parasite community structure, which was depauperate and non-interactive.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240683"},"PeriodicalIF":1.1,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144324286","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

Predicting Coronary Heart Disease Using Data Mining and Machine Learning Solutions. 使用数据挖掘和机器学习解决方案预测冠心病。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-16 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240811

Vijai M Moorthy, Bhupal N Dharamsoth, Vijayalakshmi Muthukaruppan, Arul Elango, Kalaiarasi Ganesan

引用次数: 0

In vitro Antitumor Activity and Electrochemical Studies of Bio-Electroactive Anthraquinone Derivatives in Glioblastoma. 生物电活性蒽醌衍生物在胶质母细胞瘤中的体外抗肿瘤活性及电化学研究。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-16 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241466

Suellen Maria A DA Silva, João Kaycke S DA Silva, Joice Fragoso O DE Araújo, Andressa Letícia L DA Silva, Andresa Katherine A DE Almeida, Tamires A DO Nascimento, André Felippe A Xavier, Renata G DE Almeida, Guilherme Augusti M Jardim, Eufrânio N DA Silva Júnior, Vivaldo Moura-Neto, Alysson Wagner F Duarte, Pierre Barnabé Escodro, João Xavier DE Araújo Júnior, Marília O F Goulart, Aline C DE Queiroz, Magna Suzana Alexandre-Moreira

{"title":"In vitro Antitumor Activity and Electrochemical Studies of Bio-Electroactive Anthraquinone Derivatives in Glioblastoma.","authors":"Suellen Maria A DA Silva, João Kaycke S DA Silva, Joice Fragoso O DE Araújo, Andressa Letícia L DA Silva, Andresa Katherine A DE Almeida, Tamires A DO Nascimento, André Felippe A Xavier, Renata G DE Almeida, Guilherme Augusti M Jardim, Eufrânio N DA Silva Júnior, Vivaldo Moura-Neto, Alysson Wagner F Duarte, Pierre Barnabé Escodro, João Xavier DE Araújo Júnior, Marília O F Goulart, Aline C DE Queiroz, Magna Suzana Alexandre-Moreira","doi":"10.1590/0001-3765202520241466","DOIUrl":"https://doi.org/10.1590/0001-3765202520241466","url":null,"abstract":"This study investigated the antiglioblastoma potential of nine synthetic anthraquinone derivatives (SAQDs). SAQDs were tested for their in vitro cytotoxicity against PBMCs and GBM02 cells. For PBMC, SAQDs showed no cytotoxic effects up to 100 µM. Four most promising SAQDs (1, 4, 5, and 9) demonstrated significant activity against GBM02, with selectivity index >4.54 for 1, >1.30 for 4 and 5, and >1.19 for 9. These compounds induced morphological changes, incluing cell rounding, cytoplasmic vacuolation, and membrane rupture, and inhibited cell migration. Due to the pharmacological role of oxidative stress, electrochemical methods were used to compare the reductive and oxidative capacities of the SAQD with their antitumor activity. Considering the reported findings, it is feasible to confirm that some SAQDs have antitumor effects, supporting additional studies of AQ for developing novel anticancer medications. Due to the small number of compounds investigated, it was not possible to observe a relationship between electrochemical and biological data. However, the electrochemical data are new and could be used to prepare other compounds on this line. CV data revealed that the sulfone's electron-withdrawing effect facilitated the reduction. At the same time, the sulfides had shown less positive potential for oxidation waves due to the presence of electron-donating groups.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241466"},"PeriodicalIF":1.1,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144324287","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

Parasite metacommunity structure of Mullus argentinae Hubbs & Marini, 1933 (Actinopterygii: Mullidae) off Rio de Janeiro, Southeastern Brazil. 阿根廷Mullus Hubbs & Marini寄生虫元群落结构，1933（放线虫科：Mullidae）

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-16 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240830

Raquel O Simões, Thiago S Cardoso, Aldenice Nazaré Pereira, Fabiano Paschoal, José Luis Luque

{"title":"Parasite metacommunity structure of Mullus argentinae Hubbs & Marini, 1933 (Actinopterygii: Mullidae) off Rio de Janeiro, Southeastern Brazil.","authors":"Raquel O Simões, Thiago S Cardoso, Aldenice Nazaré Pereira, Fabiano Paschoal, José Luis Luque","doi":"10.1590/0001-3765202520240830","DOIUrl":"https://doi.org/10.1590/0001-3765202520240830","url":null,"abstract":"<italic>Mullus argentinae</italic> Hubbs & Marini, 1933 is a common demersal fish that inhabits the Brazilian and Argentinean coastal zone. A total of 200 specimens of <italic>M. argentinae </italic>were collected over the four seasons (spring, summer, autumn, and winter), from 2009 to 2011, from the littoral of the State of Rio de Janeiro, Brazil, in order to study their parasite community, including their composition and structure. The distribution pattern of the parasite species was investigated using metacommunity analysis, in addition to beta diversity calculations and their components. We investigated the influence of the seasonality (temporal factor) and host-related biological variables (body length and mass) on the occurrence and abundance of parasites throughout their hosts. A total of 12 parasite species were collected (nine endoparasites and three ectoparasites). The digenean <italic>Prosorhynchus </italic>sp. presented the highest values of abundance, intensity, and prevalence of infection. An influence of seasonality on the abundance of almost all analyzed parasite species, and on their distribution along the studied metacommunity was observed, which indicates that temporal factors may be important for the patterns of interaction of these parasites with their hosts.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20240830"},"PeriodicalIF":1.1,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144324288","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

Occurrence of the hemoparasite Cyrilia spp. in the Amazonian stingray Potamotrygon wallacei. 亚马逊河黄貂鱼血寄生虫Cyrilia属的发生。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241477

Ana Clara N Alves, Larissa D Fonseca, Rayana M Paixão, Adriano T Oliveira

{"title":"Occurrence of the hemoparasite Cyrilia spp. in the Amazonian stingray Potamotrygon wallacei.","authors":"Ana Clara N Alves, Larissa D Fonseca, Rayana M Paixão, Adriano T Oliveira","doi":"10.1590/0001-3765202520241477","DOIUrl":"https://doi.org/10.1590/0001-3765202520241477","url":null,"abstract":"Freshwater stingrays play a crucial ecological role in the Amazon; however, studies on their parasitic fauna still need to be made available. This study aimed to investigate the occurrence of hemoparasites, specifically Cyrilia spp., in specimens of Potamotrygon wallacei from the Lower Rio Negro, Brazil. The research was conducted through nighttime fishing at Praia do Açutuba and the Tupé Sustainable Development Reserve. Blood samples were collected by puncturing branchial vessels, and smears were stained and analyzed under a microscope for parasitemia quantification. The results showed that specimens from Açutuba did not present significant parasites, except for one individual, which exhibited a possible macrogamont. In contrast, all specimens from Tupé displayed various parasitic stages, with parasitemia levels ranging from 0.2% to 1.3%. Morphological analysis identified predominantly intracellular stages such as trophozoites, pre-gamonts, macrogamonts, and microgamonts. It was noted that the observed stages were more similar to those characteristic of the genus Cyrilia spp. than to any other haemogregarines in fish. The study concluded that environmental and site-specific factors, such as habitat type, may influence parasitic distribution, with igapó areas favoring higher parasitic activity than beach areas.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 3","pages":"e20241477"},"PeriodicalIF":1.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144274027","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

Nitromethylene N-heterocycles as water soluble corrosion inhibitors. 氮杂环亚甲基作为水溶性缓蚀剂。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520240840

Gabriel R Antunes, Ana Júlia F Souza, Giovanni Y DA Silva, Julliane Yoneda, Elivelton A Ferreira, Diego P Sangi

引用次数: 0

A simple method for mapping microplastics filter collectors for microscopic analyses. 一种用于显微分析的微塑料过滤器收集器的简单方法。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-09 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520250309

Marco Antonio S Silva, Guilherme Dognani, André Luiz L DE Faria, Eduardo Nery D DE Araujo, Mitchael Micael S Gomes, Carlos José L Constantino, José Tadeu G Tommaselli, João Osvaldo R Nunes

{"title":"A simple method for mapping microplastics filter collectors for microscopic analyses.","authors":"Marco Antonio S Silva, Guilherme Dognani, André Luiz L DE Faria, Eduardo Nery D DE Araujo, Mitchael Micael S Gomes, Carlos José L Constantino, José Tadeu G Tommaselli, João Osvaldo R Nunes","doi":"10.1590/0001-3765202520250309","DOIUrl":"https://doi.org/10.1590/0001-3765202520250309","url":null,"abstract":"Microplastic has stood out as one of the main contaminants derived from plastic wastes due to its slow decomposition rate and dangers to the aquatic environment, the ecosystem, and even human health. However, microplastic fragment detection, identification, removal, and quantification remain a challenge. One of the main methods of removing these fragments is the filtration process using filter membranes such as paper, glass fibers, wool, etc. Among several techniques for localizing and identifying these fragments, optical microscopy is an easily accessible alternative, however, the spatialization to locate these fragments has become a challenge for equipment operators. This work proposes a simple spatialization system using coordinates that reduce operation time to make the localization of microplastic fragments onto collector filters easy. In addition to the use of an optical microscope, a micro-Raman was used to demonstrate the efficiency of this spatialization system even in another type of microscope, reducing the operating time from 2 hours and 45 minutes to approximately 2 minutes and 20 seconds, making the search for the fragment more effective and consequently, a faster analysis process.","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":"97 suppl 3","pages":"e20250309"},"PeriodicalIF":1.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144274028","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

Bad Science - what is in the pipeline? 坏科学-什么在管道？

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-06-06 DOI: 10.1590/0001-376520259702

Alexander W A Kellner

引用次数: 0

Development of microsatellite markers for Leiarius marmoratus obtained by partial de novo genome assembly. 用部分从头基因组组装获得的黑鲈微卫星标记的开发。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-30 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241094

Dárcia Gabriela B DA Costa, Daralyns B Macedo, Carlos Willian D Dantas, Regianne M Dos Santos Correa, Ádria D Dos Santos, Hendrya Julianny P Coelho, Carla Giovanni Á Moreira, Heden Luiz M Moreira, Rommel Thiago J Ramos, Marília Danyelle N Rodrigues

引用次数: 0

Stachytarpheta serrana, a new species of Verbenaceae endemic to the Diamantina Plateau in Espinhaço Range (Minas Gerais, Brazil), with palynological and anatomical notes. 巴西espinhao山脉Diamantina高原马鞭草科特有一新种——Stachytarpheta serrana，附孢粉学和解剖学资料。

IF 1.1 4区综合性期刊

Anais da Academia Brasileira de Ciencias Pub Date : 2025-05-30 eCollection Date: 2025-01-01 DOI: 10.1590/0001-3765202520241271

Pedro Henrique Cardoso, Fátima Regina G Salimena, Andrea P Luizi-Ponzo, Nádia Somavilla, Pâmela T Patrício, Marcelo Trovó

引用次数: 0