Pub Date : 2024-08-19eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420231171
Carolina M Simião, Emygdio L A Monteiro-Filho
A scientometric analysis of the Neotropical Otter is essential to establish the progress in studies with the species, in order to improve its conservation status. This study aimed to identify, categorize, and evaluate published scientific papers on Lontra longicaudis. Quantitative data was analyzed through absolute and relative frequencies, represented by tables and maps. The results showed that the publications on the Neotropical Otter increased since 1993 and have been primarily published in a specific journal (IUCN Otter Spec. Group Bull.) on the subfamily Lutrinae. Most authors reside in countries such as Brazil, Mexico, and Colombia, and publish predominantly in English. The majority of studies were conducted with free-living specimens, notably in the Brazilian state of Rio Grande do Sul and in Mexico. The most commonly used keywords match the most frequent subjects: "place of occurrence" and "diet". Despite the increase in publications, research on the Neotropical Otter is still largely limited to Brazil, Mexico, and sites near research institutions. Gaps on essential information for the species conservation, such as its biology, ecology, and behavior, were identified. The need for further studies on the Neotropical Otter in all the territory it inhabits is evident.
{"title":"Lontra longicaudis (Carnivora: Mustelidae: Lutrinae): a scientometric analysis.","authors":"Carolina M Simião, Emygdio L A Monteiro-Filho","doi":"10.1590/0001-3765202420231171","DOIUrl":"https://doi.org/10.1590/0001-3765202420231171","url":null,"abstract":"<p><p>A scientometric analysis of the Neotropical Otter is essential to establish the progress in studies with the species, in order to improve its conservation status. This study aimed to identify, categorize, and evaluate published scientific papers on Lontra longicaudis. Quantitative data was analyzed through absolute and relative frequencies, represented by tables and maps. The results showed that the publications on the Neotropical Otter increased since 1993 and have been primarily published in a specific journal (IUCN Otter Spec. Group Bull.) on the subfamily Lutrinae. Most authors reside in countries such as Brazil, Mexico, and Colombia, and publish predominantly in English. The majority of studies were conducted with free-living specimens, notably in the Brazilian state of Rio Grande do Sul and in Mexico. The most commonly used keywords match the most frequent subjects: \"place of occurrence\" and \"diet\". Despite the increase in publications, research on the Neotropical Otter is still largely limited to Brazil, Mexico, and sites near research institutions. Gaps on essential information for the species conservation, such as its biology, ecology, and behavior, were identified. The need for further studies on the Neotropical Otter in all the territory it inhabits is evident.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016118","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}
Pub Date : 2024-08-19eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230490
Cristina DE Oliveira Dias, Ana Cristina T Bonecker, Pedro F DE Carvalho, Rodolfo Paranhos, Sérgio Luiz Costa Bonecker
Bioseston is a heterogeneous assemblage of bacterioplankton, phytoplankton, zooplankton, and planktonic debris. A detailed knowledge of biosestons is essential for understanding the dynamics of trophic flows in marine ecosystems. The distributional features of seston biomass in plankton (micro- and mesoplankton) in the Southwest Atlantic Ocean (Rio de Janeiro State, Brazil) were analyzed using stratified samples gathered to a depth of 2,400 m during night time. The horizontal pattern of biomass distribution was analyzed vis-a-vis station depth during both wet and dry periods, with higher values recorded in the continental shelf than in the slope, confirming the terrestrial contribution of nutrient sources to the marine environment. This horizontal variation reinforces the occurrence of seasonal vortices in Cabo Frio and Cabo de São Tomé on the central coast of Brazil. Environmental variables reflect the hydrological signatures of the water masses along the Brazilian coast. The largest seston biomass was related to high temperatures, salinities, and low inorganic nutrient concentrations in tropical and South Atlantic central waters. The observed distribution patterns suggest that seston biomass in plankton in the region may be structured based on partitioned horizontal and vertical habitats and food resources.
{"title":"Seston biomass in plankton assemblages in the Southwestern Atlantic Ocean: spatial, vertical, and temporal variations.","authors":"Cristina DE Oliveira Dias, Ana Cristina T Bonecker, Pedro F DE Carvalho, Rodolfo Paranhos, Sérgio Luiz Costa Bonecker","doi":"10.1590/0001-3765202420230490","DOIUrl":"https://doi.org/10.1590/0001-3765202420230490","url":null,"abstract":"<p><p>Bioseston is a heterogeneous assemblage of bacterioplankton, phytoplankton, zooplankton, and planktonic debris. A detailed knowledge of biosestons is essential for understanding the dynamics of trophic flows in marine ecosystems. The distributional features of seston biomass in plankton (micro- and mesoplankton) in the Southwest Atlantic Ocean (Rio de Janeiro State, Brazil) were analyzed using stratified samples gathered to a depth of 2,400 m during night time. The horizontal pattern of biomass distribution was analyzed vis-a-vis station depth during both wet and dry periods, with higher values recorded in the continental shelf than in the slope, confirming the terrestrial contribution of nutrient sources to the marine environment. This horizontal variation reinforces the occurrence of seasonal vortices in Cabo Frio and Cabo de São Tomé on the central coast of Brazil. Environmental variables reflect the hydrological signatures of the water masses along the Brazilian coast. The largest seston biomass was related to high temperatures, salinities, and low inorganic nutrient concentrations in tropical and South Atlantic central waters. The observed distribution patterns suggest that seston biomass in plankton in the region may be structured based on partitioned horizontal and vertical habitats and food resources.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016120","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}
Pub Date : 2024-08-19eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420231010
Márcia S Jung, José Antonio G DA Silva, Juliana Maria Fachinetto, Camila M Copetti, Cristhian M Babeski, Cibele Luisa Peter
Water springs are manifestations of groundwater to the surface, forming and ensuring the supply and sustainability of streams, lakes, rivers, and dams. Therefore, its riparian forest is considered an area of permanent preservation, which aims to protect the water, as well as the spring, from consequences of disordered population growth, added to deficient basic sanitation systems, climate change, agricultural activities, inappropriate land uses, unplanned urbanization, and diffuse sources of pollution. In addition to compromising water quality, many of these factors affect the permanence of water upwelling at the source, compromising the formation and continuity of streams, lakes, and rivers. In this context, the objective of the present research was to carry out a bibliographic review on water springs, approaching adjacent themes to the main axis of the study that are fundamental for a deep understanding of their importance for the maintenance of water resources and ensuring biodiversity in the search for the sustainability of life for present and future generations. This research collaborates with the environmental view and shows that the function of a water sources is broader than its concepts can reveal.
{"title":"Water springs: an immeasurable resource for ensuring sustainability.","authors":"Márcia S Jung, José Antonio G DA Silva, Juliana Maria Fachinetto, Camila M Copetti, Cristhian M Babeski, Cibele Luisa Peter","doi":"10.1590/0001-3765202420231010","DOIUrl":"https://doi.org/10.1590/0001-3765202420231010","url":null,"abstract":"<p><p>Water springs are manifestations of groundwater to the surface, forming and ensuring the supply and sustainability of streams, lakes, rivers, and dams. Therefore, its riparian forest is considered an area of permanent preservation, which aims to protect the water, as well as the spring, from consequences of disordered population growth, added to deficient basic sanitation systems, climate change, agricultural activities, inappropriate land uses, unplanned urbanization, and diffuse sources of pollution. In addition to compromising water quality, many of these factors affect the permanence of water upwelling at the source, compromising the formation and continuity of streams, lakes, and rivers. In this context, the objective of the present research was to carry out a bibliographic review on water springs, approaching adjacent themes to the main axis of the study that are fundamental for a deep understanding of their importance for the maintenance of water resources and ensuring biodiversity in the search for the sustainability of life for present and future generations. This research collaborates with the environmental view and shows that the function of a water sources is broader than its concepts can reveal.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016122","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}
Pub Date : 2024-08-19eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230493
Julia A Romão, Êuder R Dias, Matheus Nolasco, Lilian Boccardo, Luiz Marcelo R Tomé, Aristóteles Góes Neto, Ivo José C Vieira, Raimundo Braz-Filho, Alexsandro Branco
Diplopods are terrestrial arthropods important for the dynamics of terrestrial ecosystems. One of the reasons for that can be their low predation rate due to their defensive secretion. Thus, Orthoporus fuscipes, a species belonging to this group and endemic to northeastern Brazil, was investigated as to its population structure and chemical constituents of defensive secretion. The population structure showed that females are larger and have greater mass than do males, along with negative allometric growth between males and females. The defensive secretion hexane extract was submitted to fractionation using SiO2 open-column chromatography and the gas chromatographic coupled to mass spectrometric analysis was applied in the fraction possibilities to identify major fatty acid methyl esthers, along with minor alkanes, alkenes and fatty acids derivatives and the known quinoids 2-methoxy-3-methylhydroquinone, 2-methoxy-3-methyl-1,4-benzoquinone, 2,3-dimethoxy-1,4-benzoquinone and 2,3-dimethoxyhydroquinone. In addition, the cytochrome oxidase I sequence for the species was deposited for the first time.
倍足类是陆生节肢动物,对陆地生态系统的动态变化非常重要。其原因之一可能是它们的防御性分泌物导致捕食率较低。因此,研究人员对巴西东北部特有的 Orthoporus fuscipes(属于该类的一个物种)的种群结构和防御性分泌物的化学成分进行了调查。种群结构显示,雌性比雄性体型大、质量高,雌雄之间呈负异速增长。利用二氧化硅开柱色谱法对防御性分泌物的正己烷提取物进行分馏,并对可能的馏分进行气相色谱-质谱分析,以确定主要的脂肪酸甲酯、次要的烷烃、烯烃和脂肪酸衍生物,以及已知的醌类化合物 2-甲氧基-3-甲基对苯二酚、2-甲氧基-3-甲基-1,4-苯醌、2,3-二甲氧基-1,4-苯醌和 2,3-二甲氧基对苯二酚。此外,还首次保存了该物种的细胞色素氧化酶 I 序列。
{"title":"Orthoporus fuscipes (PORAT, 1888) (Juliformia; Spirostreptidae): population structure and defensive secretion chemical analysis.","authors":"Julia A Romão, Êuder R Dias, Matheus Nolasco, Lilian Boccardo, Luiz Marcelo R Tomé, Aristóteles Góes Neto, Ivo José C Vieira, Raimundo Braz-Filho, Alexsandro Branco","doi":"10.1590/0001-3765202420230493","DOIUrl":"https://doi.org/10.1590/0001-3765202420230493","url":null,"abstract":"<p><p>Diplopods are terrestrial arthropods important for the dynamics of terrestrial ecosystems. One of the reasons for that can be their low predation rate due to their defensive secretion. Thus, Orthoporus fuscipes, a species belonging to this group and endemic to northeastern Brazil, was investigated as to its population structure and chemical constituents of defensive secretion. The population structure showed that females are larger and have greater mass than do males, along with negative allometric growth between males and females. The defensive secretion hexane extract was submitted to fractionation using SiO2 open-column chromatography and the gas chromatographic coupled to mass spectrometric analysis was applied in the fraction possibilities to identify major fatty acid methyl esthers, along with minor alkanes, alkenes and fatty acids derivatives and the known quinoids 2-methoxy-3-methylhydroquinone, 2-methoxy-3-methyl-1,4-benzoquinone, 2,3-dimethoxy-1,4-benzoquinone and 2,3-dimethoxyhydroquinone. In addition, the cytochrome oxidase I sequence for the species was deposited for the first time.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016119","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230662
Rafael S Marchão, Carlos E Copatti, Eloilton P DE Oliveira, Aline S Rocha, Anderson M DE Souza, David R DA Rocha, Antonio C S Camargo, José F B Melo
This study evaluated the digestibility of whole mango (Mangifera indica) meal (WMM) and determined the growth performance, intestinal enzyme activity, and metabolic and hematologic responses of tambaqui (Colossoma macropomum) juveniles fed diets containing different proportions of corn meal (CM) substitution by WMM. Fish fed with graded levels of WMM (0 (control), 80, 160, 240, and 320 g kg diet-1), replacing part of the dietary CM. The apparent digestibility coefficients of WMM were above 96%. Diets with WMM did not affect growth performance or intestinal enzyme activity. However, they showed a positive linear effect on plasma glucose, amino acids, and albumin levels and a negative linear effect on hepatic aspartate aminotransferase activity and hepatic glycogen, plasma cholesterol, and hemoglobin levels. Increased erythrocyte values and decreased plasma triglyceride levels were verified in fish fed 80 and 160 g WMM kg diet-1. In conclusion, the WMM may be a viable alternative to the tambaqui juveniles' diet, and WMM could replace up to 16% of CM without harming the growth and health of tambaqui juveniles.
{"title":"Effects of the replacement corn meal by whole mango meal on tambaqui (Colossoma macropomum) diet: Digestibility, growth performance, biochemical, and hematological responses.","authors":"Rafael S Marchão, Carlos E Copatti, Eloilton P DE Oliveira, Aline S Rocha, Anderson M DE Souza, David R DA Rocha, Antonio C S Camargo, José F B Melo","doi":"10.1590/0001-3765202420230662","DOIUrl":"https://doi.org/10.1590/0001-3765202420230662","url":null,"abstract":"<p><p>This study evaluated the digestibility of whole mango (Mangifera indica) meal (WMM) and determined the growth performance, intestinal enzyme activity, and metabolic and hematologic responses of tambaqui (Colossoma macropomum) juveniles fed diets containing different proportions of corn meal (CM) substitution by WMM. Fish fed with graded levels of WMM (0 (control), 80, 160, 240, and 320 g kg diet-1), replacing part of the dietary CM. The apparent digestibility coefficients of WMM were above 96%. Diets with WMM did not affect growth performance or intestinal enzyme activity. However, they showed a positive linear effect on plasma glucose, amino acids, and albumin levels and a negative linear effect on hepatic aspartate aminotransferase activity and hepatic glycogen, plasma cholesterol, and hemoglobin levels. Increased erythrocyte values and decreased plasma triglyceride levels were verified in fish fed 80 and 160 g WMM kg diet-1. In conclusion, the WMM may be a viable alternative to the tambaqui juveniles' diet, and WMM could replace up to 16% of CM without harming the growth and health of tambaqui juveniles.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016117","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420240100
Charlene S C Garcia, Paulo Miguel C Garcia, Otávio B A F Santos, Daniela Steffens, Sandro T Martins, Patricia Pranke, Janaína S Crespo, João Antonio P Henriques, Mariana Roesch-Ely
The use of platelet-rich plasma (PRP) and adipose-derived stromal cells (ADSC) have been investigated as a form of wound healing enhancement. The objective of this work was to evaluate the association of red propolis (RP) and PRP as inducers of ADSC for application in tissue regeneration. Adipose tissue post-collection and post-cryopreservation was isolated with type II collagenase, characterized by flow cytometry, and differentiated into osteogenic, chondrogenic and adipose cell. The viability of ADSC was evaluated when exposed to different concentrations of RP using the MTT and trypan blue assay. Acridine orange and ethidium bromide (AO/EB) was performed to evaluate cell death events. Horizontal migration methods were investigated in ADSC using autologous and homologous PRP associated with RP (PRP/RP). All assays were processed in triplicate. Flow cytometry and cellular differentiation showed that type II collagenase was effective for isolating ADSC post-collection and post-cryopreservation. RP extracts at concentrations of up to 50 μg.mL-1 presented no cytotoxic effects. Association of PRP and RP at 25 and 50 μg.ml-1 influenced ADSC migration, with total closure on the seventh day after exposition. The results here presented could stimulate proliferation of ADSC cells that may contribute directly or indirectly to the reconstructive process of tissue regeneration.
富血小板血浆(PRP)和脂肪源性基质细胞(ADSC)作为一种促进伤口愈合的形式已得到研究。这项工作的目的是评估红蜂胶(RP)和富血小板血浆作为 ADSC 诱导剂在组织再生中的应用。用 II 型胶原酶分离采集和冷冻保存后的脂肪组织,用流式细胞术对其进行表征,并将其分化为成骨细胞、软骨细胞和脂肪细胞。使用 MTT 和胰蓝检测法评估 ADSC 暴露于不同浓度 RP 时的活力。吖啶橙和溴化乙锭(AO/EB)用于评估细胞死亡事件。使用与 RP 相关的自体和同源 PRP(PRP/RP)研究了 ADSC 的水平迁移方法。所有试验均一式三份。流式细胞术和细胞分化显示,II型胶原酶能有效分离采集后和冷冻保存后的ADSC。浓度高达 50 μg.mL-1 的 RP 提取物没有细胞毒性作用。25 和 50 μg.mL-1 的 PRP 和 RP 会影响 ADSC 的迁移,并在接触后第七天完全封闭。本文介绍的结果可刺激 ADSC 细胞增殖,从而直接或间接促进组织再生的重建过程。
{"title":"Red propolis extract associated to platelet-rich plasma and stromal cells with focus in cell therapy and functional tissue regeneration.","authors":"Charlene S C Garcia, Paulo Miguel C Garcia, Otávio B A F Santos, Daniela Steffens, Sandro T Martins, Patricia Pranke, Janaína S Crespo, João Antonio P Henriques, Mariana Roesch-Ely","doi":"10.1590/0001-3765202420240100","DOIUrl":"https://doi.org/10.1590/0001-3765202420240100","url":null,"abstract":"<p><p>The use of platelet-rich plasma (PRP) and adipose-derived stromal cells (ADSC) have been investigated as a form of wound healing enhancement. The objective of this work was to evaluate the association of red propolis (RP) and PRP as inducers of ADSC for application in tissue regeneration. Adipose tissue post-collection and post-cryopreservation was isolated with type II collagenase, characterized by flow cytometry, and differentiated into osteogenic, chondrogenic and adipose cell. The viability of ADSC was evaluated when exposed to different concentrations of RP using the MTT and trypan blue assay. Acridine orange and ethidium bromide (AO/EB) was performed to evaluate cell death events. Horizontal migration methods were investigated in ADSC using autologous and homologous PRP associated with RP (PRP/RP). All assays were processed in triplicate. Flow cytometry and cellular differentiation showed that type II collagenase was effective for isolating ADSC post-collection and post-cryopreservation. RP extracts at concentrations of up to 50 μg.mL-1 presented no cytotoxic effects. Association of PRP and RP at 25 and 50 μg.ml-1 influenced ADSC migration, with total closure on the seventh day after exposition. The results here presented could stimulate proliferation of ADSC cells that may contribute directly or indirectly to the reconstructive process of tissue regeneration.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016113","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420231342
Silvina Raquel Pérez, Emiliana Bernasconi, María S Candel
The present study provides a detailed record of foraminiferal fauna and their ecological implications from surface sediments from Atlantic shelf of Tierra del Fuego, Argentina. The foraminiferal assemblage is mostly composed by four main hyaline genera, such as Cibicidoides, Cibicides, Globocassidulina and Buccella, which allowed the identification of three environmental zones. Zone 1 (Z1, 37 to 90 m) encompasses the eastern Beagle Channel and San Sebastian Bay. The assemblage reflected well-oxygenated marine inner shelf habitat, adapted to cold temperate waters. Zone 2 (Z2, up to 98.4 m), is located around the southern tip of Tierra del Fuego. The assemblage suggested a deeper marine environment, well oxygenated and with higher energy, probably due to the effect of tides and mainly by the influence of Malvinas Current. Finally, Zone 3 (Z3, up to 195 m) is located furthest from the Atlantic coast and the assemblage suggested an environment characteristic of outer shelf, with well-oxygenated cold waters and high-energy environment, reflected by species adhered to the substrate and coarse sediments. The distribution and abundance of certain species showed the influence of the Malvinas Current, while others evidenced a contribution of the Cape Horn waters.
{"title":"Benthic foraminifera diversity from the south Atlantic Ocean: Tierra del Fuego and surrounding waters (South America).","authors":"Silvina Raquel Pérez, Emiliana Bernasconi, María S Candel","doi":"10.1590/0001-3765202420231342","DOIUrl":"https://doi.org/10.1590/0001-3765202420231342","url":null,"abstract":"<p><p>The present study provides a detailed record of foraminiferal fauna and their ecological implications from surface sediments from Atlantic shelf of Tierra del Fuego, Argentina. The foraminiferal assemblage is mostly composed by four main hyaline genera, such as Cibicidoides, Cibicides, Globocassidulina and Buccella, which allowed the identification of three environmental zones. Zone 1 (Z1, 37 to 90 m) encompasses the eastern Beagle Channel and San Sebastian Bay. The assemblage reflected well-oxygenated marine inner shelf habitat, adapted to cold temperate waters. Zone 2 (Z2, up to 98.4 m), is located around the southern tip of Tierra del Fuego. The assemblage suggested a deeper marine environment, well oxygenated and with higher energy, probably due to the effect of tides and mainly by the influence of Malvinas Current. Finally, Zone 3 (Z3, up to 195 m) is located furthest from the Atlantic coast and the assemblage suggested an environment characteristic of outer shelf, with well-oxygenated cold waters and high-energy environment, reflected by species adhered to the substrate and coarse sediments. The distribution and abundance of certain species showed the influence of the Malvinas Current, while others evidenced a contribution of the Cape Horn waters.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016154","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230309
Guilherme M Prado, Júlio César S Prado, Francisca Lidiane L DE Aguiar, Francisco Cesar B Barbosa, Jean P C DO Vale, Maria Rosário Martins, Silva Macedo Arantes, Natália V DE Sousa, Danielle M Lima, Emmanuel S Marinho, Márcia M Marinho, Raquel O S Fontenelle
Brazil is renowned for its extensive plant biodiversity, with emphasis on Cymbopogon, C. citratus and C. nardus, with broad antimicrobial potential. Candidemias caused by Candida albicans are highly prevalent in immunosuppressed individuals and are associated with infections by biofilms on medical devices. The aim of this study was to evaluate the antimicrobial potential of essential oils C. citratus and C. nardus against C. albicans in planktonic and biofilm forms. Essential oils were obtained by hydrodistillation and chemical composition evaluated by GC-FID and GC-MS. The minimum inhibitory concentration was determined by the broth microdilution method and the synergy effect of essential oils and amphotericin B were evaluated by the checkerboard test. Biofilm activity was determined by the XTT assay. Cytotoxicity assays performed with VERO cells and molecular docking were performed to predict the effect of oil interaction on the SAP-5 enzyme site. The results showed activity of essential oils against planktonic cells and biofilm of C. albicans. Furthermore, the oils had a synergistic effect, and low cytotoxicity. Molecular docking showed interaction between Cadinene, Caryophyllen oxide, Germacrene D with SAP-5. The results indicate that Cymbopogon spp. studied are anti-Candida, with potential for further application in therapy against infections caused by C. albicans.
巴西以其广泛的植物生物多样性而闻名,重点是具有广泛抗菌潜力的 Cymbopogon、C. citratus 和 C.nardus。由白色念珠菌引起的念珠菌病在免疫抑制人群中非常普遍,并与医疗设备上的生物膜感染有关。本研究旨在评估柠檬香精油(C. citratus)和纳豆香精油(C. nardus)对浮游和生物膜形式的白色念珠菌的抗菌潜力。精油通过水蒸馏获得,化学成分通过 GC-FID 和 GC-MS 进行评估。采用肉汤微稀释法测定了最低抑制浓度,并通过棋盘试验评估了精油和两性霉素 B 的协同作用。生物膜活性通过 XTT 试验确定。用 VERO 细胞进行了细胞毒性试验,并进行了分子对接,以预测精油对 SAP-5 酶位点的相互作用效果。结果表明,精油对白僵菌的浮游细胞和生物膜具有活性。此外,精油还具有协同效应和低细胞毒性。分子对接显示,Cadinene、Caryophyllen oxide、Germacrene D 与 SAP-5 之间存在相互作用。研究结果表明,所研究的伞形科植物具有抗念珠菌的作用,有望进一步应用于治疗由白念珠菌引起的感染。
{"title":"Antifungal, molecular docking and cytotoxic effect of the essential oil of Cymbopogon citratus (DC) Stapf. and Cymbopogon nardus (L.) Rendle against Candida albicans.","authors":"Guilherme M Prado, Júlio César S Prado, Francisca Lidiane L DE Aguiar, Francisco Cesar B Barbosa, Jean P C DO Vale, Maria Rosário Martins, Silva Macedo Arantes, Natália V DE Sousa, Danielle M Lima, Emmanuel S Marinho, Márcia M Marinho, Raquel O S Fontenelle","doi":"10.1590/0001-3765202420230309","DOIUrl":"https://doi.org/10.1590/0001-3765202420230309","url":null,"abstract":"<p><p>Brazil is renowned for its extensive plant biodiversity, with emphasis on Cymbopogon, C. citratus and C. nardus, with broad antimicrobial potential. Candidemias caused by Candida albicans are highly prevalent in immunosuppressed individuals and are associated with infections by biofilms on medical devices. The aim of this study was to evaluate the antimicrobial potential of essential oils C. citratus and C. nardus against C. albicans in planktonic and biofilm forms. Essential oils were obtained by hydrodistillation and chemical composition evaluated by GC-FID and GC-MS. The minimum inhibitory concentration was determined by the broth microdilution method and the synergy effect of essential oils and amphotericin B were evaluated by the checkerboard test. Biofilm activity was determined by the XTT assay. Cytotoxicity assays performed with VERO cells and molecular docking were performed to predict the effect of oil interaction on the SAP-5 enzyme site. The results showed activity of essential oils against planktonic cells and biofilm of C. albicans. Furthermore, the oils had a synergistic effect, and low cytotoxicity. Molecular docking showed interaction between Cadinene, Caryophyllen oxide, Germacrene D with SAP-5. The results indicate that Cymbopogon spp. studied are anti-Candida, with potential for further application in therapy against infections caused by C. albicans.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016115","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230942
Concepta McManus, Abilio A Baeta Neves, Timothy Joseph Finan, Felipe Pimentel, Daniel Pimentel, Rafael T Schleicher
In this paper, we looked at the collaboration publishing patterns for groups of Global South countries (Latin America, Africa, ASEAN, Asian, BRICS), as well as publishing parameters. We looked at financing and the relationships between these groups and the Global North. Data from 2002 to 2021 was collected from InCites ® (Web of Science, Clarivate Analytics) and SciVal® (Scopus Elsevier). The impact was lower for BRICS, while Latin America and Asean countries tended to have a higher Field Weighted Citation Impact. Good Health and well-being (SDG 3) dominates South-South Collaborations. Asian countries showed a higher percentage of Affordable and Clean Energy (SDG7), while Africa and Latin America had a higher rate of Zero Hunger (SDG1). Each region shows different production profiles, but collaboration with the Global North is necessary for all regions. Intra-regional shows a lower impact than inter-regional financing, calling attention to the increasing influence of China in all regions, except for Latin America. The data analysed can be used for orienting South-South scientific Collaboration programs, focusing on pre-existent synergies and on where policy changes and results can be maximised.
{"title":"The South-South Dimension in International Research Collaboration.","authors":"Concepta McManus, Abilio A Baeta Neves, Timothy Joseph Finan, Felipe Pimentel, Daniel Pimentel, Rafael T Schleicher","doi":"10.1590/0001-3765202420230942","DOIUrl":"https://doi.org/10.1590/0001-3765202420230942","url":null,"abstract":"<p><p>In this paper, we looked at the collaboration publishing patterns for groups of Global South countries (Latin America, Africa, ASEAN, Asian, BRICS), as well as publishing parameters. We looked at financing and the relationships between these groups and the Global North. Data from 2002 to 2021 was collected from InCites ® (Web of Science, Clarivate Analytics) and SciVal® (Scopus Elsevier). The impact was lower for BRICS, while Latin America and Asean countries tended to have a higher Field Weighted Citation Impact. Good Health and well-being (SDG 3) dominates South-South Collaborations. Asian countries showed a higher percentage of Affordable and Clean Energy (SDG7), while Africa and Latin America had a higher rate of Zero Hunger (SDG1). Each region shows different production profiles, but collaboration with the Global North is necessary for all regions. Intra-regional shows a lower impact than inter-regional financing, calling attention to the increasing influence of China in all regions, except for Latin America. The data analysed can be used for orienting South-South scientific Collaboration programs, focusing on pre-existent synergies and on where policy changes and results can be maximised.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016121","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}
Pub Date : 2024-08-16eCollection Date: 2024-01-01DOI: 10.1590/0001-3765202420230348
Elias S Gallina, Taiara A Caires, Orlando Ernesto J Cortés
Cyanobacterial phycocyanin and phycoerythrin are gaining commercial interest due to their nutrition and healthcare values. This research analyzed the biomass accumulation and pigment production of two strains of Leptolyngbya under different combinations of light colors and intensities. The results showed that while Leptolyngbya sp.4 B1 (B1) produced all phycobiliproteins, Leptolyngbya sp.5 F2 (F2) only had phycocyanin and allophycocyanin. Both the color of the light and its light intensity affect the biomass accumulation and phycoerythrin concentration in strain B1. Although white light at medium intensity (50 μmol m-2 s-1) causes greater biomass accumulation (1.66 ± 0.13 gDW L-1), low-intensity (25 μmol m-2 s-1) green light induces lower biomass accumulation with twice the pigment content (87.70 ± 2.46 mg gDW -1), culminating in 71% greater productivity. In contrast, for the F2 strain, light intensity positively influenced biomass and pigment accumulation, being observed 2.25 ± 0.10 gDW L-1 under white light at 100 μmol m-2 s-1 and higher phycocyanin concentration (138.38 ± 3.46 mg gDW -1) under red light at 100 μmol m-2 s-1. These findings provide insights into optimizing the growth conditions by altering the intensity and wavelength of light for future production of phycocyanin and phycoerythrin from local cyanobacteria.
{"title":"Effects of light quality and intensity on phycobiliprotein productivity in two Leptolyngbya strains isolated from southern Bahia's Atlantic Forest.","authors":"Elias S Gallina, Taiara A Caires, Orlando Ernesto J Cortés","doi":"10.1590/0001-3765202420230348","DOIUrl":"https://doi.org/10.1590/0001-3765202420230348","url":null,"abstract":"<p><p>Cyanobacterial phycocyanin and phycoerythrin are gaining commercial interest due to their nutrition and healthcare values. This research analyzed the biomass accumulation and pigment production of two strains of Leptolyngbya under different combinations of light colors and intensities. The results showed that while Leptolyngbya sp.4 B1 (B1) produced all phycobiliproteins, Leptolyngbya sp.5 F2 (F2) only had phycocyanin and allophycocyanin. Both the color of the light and its light intensity affect the biomass accumulation and phycoerythrin concentration in strain B1. Although white light at medium intensity (50 μmol m-2 s-1) causes greater biomass accumulation (1.66 ± 0.13 gDW L-1), low-intensity (25 μmol m-2 s-1) green light induces lower biomass accumulation with twice the pigment content (87.70 ± 2.46 mg gDW -1), culminating in 71% greater productivity. In contrast, for the F2 strain, light intensity positively influenced biomass and pigment accumulation, being observed 2.25 ± 0.10 gDW L-1 under white light at 100 μmol m-2 s-1 and higher phycocyanin concentration (138.38 ± 3.46 mg gDW -1) under red light at 100 μmol m-2 s-1. These findings provide insights into optimizing the growth conditions by altering the intensity and wavelength of light for future production of phycocyanin and phycoerythrin from local cyanobacteria.</p>","PeriodicalId":7776,"journal":{"name":"Anais da Academia Brasileira de Ciencias","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016116","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}