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Silva EJNL, Peña-Bengoa F, Ajuz NC, Vieira VTL, Martins JNR, Marques D, Pinto R, Rito Pereira M, Braz-Fernandes FM, Versiani MA. Multimethod analysis of large- and low-tapered single file reciprocating instruments: Design, metallurgy, mechanical performance, and irrigation flow. Int Endod J 2024; 57:601-616. [PMID: 38376108 DOI: 10.1111/iej.14047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024]
Abstract
AIM To compare eight large- and low-tapered heat-treated reciprocating instruments regarding their design, metallurgy, mechanical properties, and irrigation flow through an in silico model. METHODOLOGY A total of 472 new 25-mm E-Flex Rex (25/.04 and 25/.06), Excalibur (25/.05), Procodile (25/.06), Reciproc Blue R25 (25/.08v), WaveOne Gold Primary (25/.07v), and Univy Sense (25/.04 and 25/.06) instruments were evaluated regarding their design (stereomicroscopy, scanning electron microscopy, and 3D surface scanning), metallurgy (energy-dispersive X-ray spectroscopy and differential scanning calorimetry), and mechanical performance (cyclic fatigue, torsional resistance, cutting ability, bending and buckling resistance). Computational fluid dynamics assessment was also conducted to determine the irrigation flow pattern, apical pressure, and wall shear stress in simulated canal preparations. Kruskal-Wallis and one-way anova post hoc Tukey tests were used for statistical comparisons (α = 5%). RESULTS Instruments presented variations in blade numbers, helical angles, and tip designs, with all featuring non-active tips, symmetrical blades, and equiatomic nickel-titanium ratios. Cross-sectional designs exhibited an S-shaped geometry, except for WaveOne Gold. Univy 25/.04 and Reciproc Blue displayed the smallest and largest core diameters at D3. Univy 25/.04 and E-Flex Rec 25/.04 demonstrated the longest time to fracture (p < .05). Reciproc Blue and Univy 25/.04 exhibited the highest and lowest torque to fracture, respectively (p < .05). Univy 25/.04 and Reciproc Blue had the highest rotation angles, whilst E-Flex Rec 25/.06 showed the lowest angle (p < .05). The better cutting ability was observed with E-Flex Rec 25/.06, Procodile, Excalibur, and Reciproc Blue (p > .05). Reciproc R25 and E-Flex Rec showed the highest buckling resistance values (p < .05), with WaveOne Gold being the least flexible instrument. The impact of instruments' size and taper on wall shear stress and apical pressure did not follow a distinct pattern, although Univy 25/.04 and E-Flex Rec 25/.06 yielded the highest and lowest values for both parameters, respectively. CONCLUSIONS Low-tapered reciprocating instruments exhibit increased flexibility, higher time to fracture, and greater angles of rotation, coupled with reduced maximum bending loads and buckling strength compared to large-tapered instruments. Nevertheless, low-tapered systems also exhibit lower maximum torque to fracture and inferior cutting ability, contributing to a narrower apical canal enlargement that may compromise the penetration of irrigants in that region.
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Affiliation(s)
- Emmanuel João Nogueira Leal Silva
- Department of Endodontics, School of Dentistry, State University of Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Fernando Peña-Bengoa
- Department of Endodontics, School of Dentistry, Universidad Andres Bello, Viña del Mar, Chile
| | - Natasha C Ajuz
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Victor T L Vieira
- Department of Endodontics, School of Dentistry, Grande Rio University (UNIGRANRIO), Rio de Janeiro, RJ, Brazil
| | - Jorge N R Martins
- Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Grupo de Investigação em Bioquimica e Biologia Oral, Unidade de Investigação em Ciências Orais e Biomédicas (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Centro de Estudo de Medicina Dentária Baseada na Evidência (CEMDBE) - Cochrane Portugal, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
| | - Duarte Marques
- Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Grupo de Investigação em Bioquimica e Biologia Oral, Unidade de Investigação em Ciências Orais e Biomédicas (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Centro de Estudo de Medicina Dentária Baseada na Evidência (CEMDBE) - Cochrane Portugal, Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
| | - Ricardo Pinto
- Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
- Grupo de Investigação em Bioquimica e Biologia Oral, Unidade de Investigação em Ciências Orais e Biomédicas (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
| | - Mario Rito Pereira
- Faculdade de Medicina Dentária, Universidade de Lisboa, Lisboa, Portugal
| | - Francisco Manuel Braz-Fernandes
- CENIMAT/I3N, Department of Materials Science, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
| | - Marco A Versiani
- Oral Health Center, Brazilian Military Police, Minas Gerais, Brazil
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Werdan Romão MA, Pinto L, Cavalli RC, Duarte G, de Moraes NV, Abduljalil K, Moreira FDL. Mechanistic Framework to Predict Maternal-Placental-Fetal Pharmacokinetics of Nifedipine Employing Physiologically Based Pharmacokinetic Modeling Approach. J Clin Pharmacol 2024; 64:568-577. [PMID: 38305718 DOI: 10.1002/jcph.2404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/29/2023] [Indexed: 02/03/2024]
Abstract
Nifedipine is used for treating mild to severe hypertension and preventing preterm labor in pregnant women. Nevertheless, concerns about nifedipine fetal exposure and safety are always raised. The aim of this study was to develop and validate a maternal-placental-fetal nifedipine physiologically based pharmacokinetic (PBPK) model and apply the model to predict maternal, placental, and fetal exposure to nifedipine at different pregnancy stages. A nifedipine PBPK model was verified with nonpregnant data and extended to the pregnant population after the inclusion of the fetoplacental multicompartment model that accounts for the placental tissue and different fetal organs within the Simcyp Simulator version 22. Model parametrization involved scaling nifedipine transplacental clearance based on Caco-2 permeability, and fetal hepatic clearance was obtained from in vitro to in vivo extrapolation encompassing cytochrome P450 3A7 and 3A4 activities. Predicted concentration profiles were compared with in vivo observations and the transplacental transfer results were evaluated using 2-fold criteria. The PBPK model predicted a mean cord-to-maternal plasma ratio of 0.98 (range, 0.86-1.06) at term, which agrees with experimental observations of 0.78 (range, 0.59-0.93). Predicted nifedipine exposure was 1.4-, 2.0-, and 3.0-fold lower at 15, 27, and 39 weeks of gestation when compared with nonpregnant exposure, respectively. This innovative PBPK model can be applied to support maternal and fetal safety assessment for nifedipine at various stages of pregnancy.
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Affiliation(s)
- Marya Antônya Werdan Romão
- Laboratório de Farmacometria (LabFarma), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Leonardo Pinto
- Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Ricardo Carvalho Cavalli
- Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Geraldo Duarte
- Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Natália Valadares de Moraes
- Center for Pharmacometrics and Systems Pharmacology, Department of Pharmaceutics, College of Pharmacy, University of Florida, Orlando, FL, USA
| | | | - Fernanda de Lima Moreira
- Laboratório de Farmacometria (LabFarma), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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da Silva FMF, de Carvalho FM, Franco ALMM, Soares TRC, Fonseca-Gonçalves A, Vieira AR, Neves ADA, de Castro Costa M. Association between molar hypomineralization, genes involved in enamel development, and medication in early childhood: A preliminary study. Int J Paediatr Dent 2024; 34:211-218. [PMID: 37337785 DOI: 10.1111/ipd.13094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Molar hypomineralization (MH) is defined as a multifactorial condition, and thus, its presence may be defined by interactions between environmental and genetic factors. AIM To evaluate the association between MH, genes involved in enamel development, and the use of medication during pregnancy in early childhood. DESIGN One hundred and eighteen children, 54 with and 64 without MH, were studied. The data collected included demographics, socioeconomic data, and the medical history of mothers and children. Genomic DNA was collected from saliva. Genetic polymorphisms in ameloblastin (AMBN; rs4694075), enamelin (ENAM; rs3796704, rs7664896), and kallikrein (KLK4; rs2235091) were evaluated. These genes were analyzed by real-time polymerase chain reaction using TaqMan chemistry. The software PLINK was used to compare allele and genotype distributions of the groups and to assess the interaction between environmental variables and genotypes (p < .05). RESULTS The variant allele KLK4 rs2235091 was associated with MH in some children (odds ratio [OR]: 3.75; 95% confidence interval [CI] = 1.65-7.81; p = .001). Taking medications in the first 4 years of life was also associated with MH (OR: 2.94; 95% CI = 1.02-6.04; p = .041) and specifically in association with polymorphisms in ENAM, AMBN, and KLK4 (p < .05). The use of medications during pregnancy was not associated with MH (OR: 1.37; 95% CI = 0.593-3.18; p = .458). CONCLUSION The results of this study suggest that taking medication in the postnatal period appears to contribute to the etiology of MH in some evaluated children. There may be a possible genetic influence of polymorphisms in the KLK4 gene with this condition.
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Affiliation(s)
- Fernanda Mafei Felix da Silva
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Thais Rodrigues Campos Soares
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andréa Fonseca-Gonçalves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Rezende Vieira
- Department of Oral & Craniofacial Sciences, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcelo de Castro Costa
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Coelho MV, Cupello C, Brito PM, Otero O. Taxonomical use of scale ornamentation: Challenges by intraspecific and intra-individual variations in four adult specimens of Polypterus bichir. J Fish Biol 2024. [PMID: 38651306 DOI: 10.1111/jfb.15752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/13/2024] [Accepted: 03/27/2024] [Indexed: 04/25/2024]
Abstract
Many actinopterygian fish groups, including fossil and extant polypteriforms and lepisosteiforms, fossil halecomorphs, and some basal teleosts, have stout bony scales covered by layers of ganoin-an enamel layer ornamented with minute tubercles. Ganoid scales preserve well as disarticulated remains and notably constitute most of the fossil record for polypteriform in both South America and Africa. Based on two variables (tubercle size and distance between tubercles), some authors reported that the ganoin tubercle ornamentation in these scales is constant within a species and differs between species and allows distinguishing species or at least groups of species. However, despite its promising potential for assessing polypteriform paleodiversity, this tool has remained unused, probably because the variables are not well defined, and intraspecific variation does not seem to have been considered. To address this gap, we aimed to test the intraspecific and intra-individual variation in the ornamentation of ganoid scales in the type species Polypterus bichir. We propose three different parameters to describe the tubercle ornamentation: the distance between contiguous tubercles centers, their density, and their relative spatial organization. With these parameters, we investigate the variation in ganoin ornamentation among four specimens and across different regions of the body. Our results show that the distribution of the tubercles is highly variable within a same species, regardless of the body region, and sometimes even between different sectors of a same scale. Moreover, the variation observed in P. bichir overlaps with the distribution described in the literature for several extant and fossil species. Thus far, the ornamentation of ganoid scales is not a reliable diagnostical feature for polypterids.
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Affiliation(s)
- Marcos Vinícius Coelho
- Departamento de Zoologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Camila Cupello
- Departamento de Zoologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paulo M Brito
- Departamento de Zoologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- UMR 8067, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Olga Otero
- UMR 7262 PALEVOPRIM CNRS, UFR SFA, Université de Poitiers, Poitiers, France
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Parente DB, de Melo Malta FCM, de Souza Cravo R, Luiz RR, Rotman V, Perez RM, Rodrigues RS. Multiparametric magnetic resonance imaging of the liver and spleen in Gaucher disease. Abdom Radiol (NY) 2024:10.1007/s00261-024-04293-w. [PMID: 38642092 DOI: 10.1007/s00261-024-04293-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/22/2024]
Abstract
PURPOSE To assess liver and spleen characteristics of a population with Gaucher disease (GD) using multiparametric MRI and MR elastography (MRE) for evaluation of diffuse liver and spleen disease, which includes liver fat fraction, liver and spleen volume and iron deposition, and liver and spleen stiffness correlated with DS3 Severity Scoring System for Gaucher disease (GD-DS3). METHODS We prospectively evaluated 41 patients with type 1 Gaucher disease using a 3.0 T MRI and MRE between January 2019 and February 2020. Clinical, laboratory, and imaging data was collected. Mann-Whitney, Kruskal-Wallis, and Spearman's correlation were applied to evaluate liver and spleen MRI and MRE, clinical and laboratory variables, and GD-DS3. ERT and SRT treatment groups were compared. RESULTS Hepatomegaly was seen in 15% and splenomegaly in 42% of the population. Moderate and strong and correlations were found between liver and spleen iron overload (rho = 0.537; p = 0.002); between liver and spleen volume (rho = 0.692, p < 0.001) and between liver and spleen stiffness (rho = 0.453, p = 0.006). Moderate correlations were found between liver stiffness and GD-DS3 (rho = 0.559; p < 0.001) and between splenic volume and GD-DS3 (rho = 0.524; p = 0.001). CONCLUSION The prevalence of hepatosplenomegaly, liver fibrosis, and liver iron overload in treated patients with GD is low, which may be related to the beneficial effect of treatment. Liver MRE and splenic volume correlate with severity score and may be biomarkers of disease severity.
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Affiliation(s)
- Daniella Braz Parente
- D'Or Institute for Research and Education, Rua Diniz Cordeiro, 30, 3º Andar. Botafogo., Rio de Janeiro, RJ, CEP 22281-100, Brazil.
- Federal University of Rio de Janeiro, Cidade Universitária, Av. Professor Rodolpho Paulo Rocco 255. Ilha Do Fundão., Rio de Janeiro, RJ, CEP 21941-913, Brazil.
| | | | - Renata de Souza Cravo
- Arthur de Siqueira Cavalcanti State Institute of Hematology: Hospital Hemorio, R. Frei Caneca, 8. Centro., Rio de Janeiro, RJ, CEP 20211-030, Brazil
| | - Ronir Raggio Luiz
- Instituto de Estudos Em Saúde Coletiva, Federal University of Rio de Janeiro, Cidade Universitária, Ilha Do Fundão, Rio de Janeiro, CEP 21941-592, Brazil
| | - Vivian Rotman
- Federal University of Rio de Janeiro, Cidade Universitária, Av. Professor Rodolpho Paulo Rocco 255. Ilha Do Fundão., Rio de Janeiro, RJ, CEP 21941-913, Brazil
| | - Renata Mello Perez
- D'Or Institute for Research and Education, Rua Diniz Cordeiro, 30, 3º Andar. Botafogo., Rio de Janeiro, RJ, CEP 22281-100, Brazil
- Federal University of Rio de Janeiro, Cidade Universitária, Av. Professor Rodolpho Paulo Rocco 255. Ilha Do Fundão., Rio de Janeiro, RJ, CEP 21941-913, Brazil
| | - Rosana Souza Rodrigues
- D'Or Institute for Research and Education, Rua Diniz Cordeiro, 30, 3º Andar. Botafogo., Rio de Janeiro, RJ, CEP 22281-100, Brazil
- Federal University of Rio de Janeiro, Cidade Universitária, Av. Professor Rodolpho Paulo Rocco 255. Ilha Do Fundão., Rio de Janeiro, RJ, CEP 21941-913, Brazil
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de Mattos TRF, Formiga-Jr MA, Saraiva EM. Resveratrol prevents the release of neutrophil extracellular traps (NETs) by controlling hydrogen peroxide levels and nuclear elastase migration. Sci Rep 2024; 14:9107. [PMID: 38643283 PMCID: PMC11032324 DOI: 10.1038/s41598-024-59854-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/16/2024] [Indexed: 04/22/2024] Open
Abstract
Neutrophil extracellular traps (NETs) are defense mechanisms that trap and kill microorganisms and degrade cytokines. However, excessive production, dysregulation of suppression mechanisms, or inefficient removal of NETs can contribute to increased inflammatory response and the development of pathological conditions. Therefore, research has focused on identifying drugs that inhibit or delay the NET release process. Since reactive oxygen species (ROS) play a significant role in NET release, we aimed to investigate whether resveratrol (RSV), with a wide range of biological and pharmacological properties, could modulate NET release in response to different stimuli. Thus, human neutrophils were pretreated with RSV and subsequently stimulated with PMA, LPS, IL-8, or Leishmania. Our findings revealed that RSV reduced the release of NETs in response to all tested stimuli. RSV decreased hydrogen peroxide levels in PMA- and LPS-stimulated neutrophils, inhibited myeloperoxidase activity, and altered the localization of neutrophil elastase. RSV inhibition of NET generation was not mediated through A2A or A2B adenosine receptors or PKA. Based on the observed effectiveness of RSV in inhibiting NET release, our study suggests that this flavonoid holds potential as a candidate for treating NETs involving pathologies.
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Affiliation(s)
- Thayana Roberta Ferreira de Mattos
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Marcos Antonio Formiga-Jr
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Elvira Maria Saraiva
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil.
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Fernandes O, Ramos LR, Acchar MC, Sanchez TA. Migraine aura discrimination using machine learning: an fMRI study during ictal and interictal periods. Med Biol Eng Comput 2024:10.1007/s11517-024-03080-5. [PMID: 38637358 DOI: 10.1007/s11517-024-03080-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 03/26/2024] [Indexed: 04/20/2024]
Abstract
Functional magnetic resonance imaging (fMRI) studies on migraine with aura are challenging due to the rarity of patients with triggered cases. This study optimized methodologies to explore differences in ictal and interictal spatiotemporal activation patterns based on visual stimuli using fMRI in two patients with unique aura triggers. Both patients underwent separate fMRI sessions during the ictal and interictal periods. The Gaussian Process Classifier (GPC) was used to differentiate these periods by employing a machine learning temporal embedding approach and spatiotemporal activation patterns based on visual stimuli. When restricted to visual and occipital regions, GPC had an improved performance, with accuracy rates for patients A and B of roughly 86-90% and 77-81%, respectively (p < 0.01). The algorithm effectively differentiated visual stimulation and rest periods and identified times when aura symptoms manifested, as evident from the varying predicted probabilities in the GPC models. These findings contribute to our understanding of the role of visual processing and brain activity patterns in migraine with aura and the significance of temporal embedding techniques in examining aura phenomena. This finding has implications for diagnostic tools and therapeutic techniques, especially for patients suffering from aura symptoms.
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Affiliation(s)
- Orlando Fernandes
- Laboratory of Neuroimaging and Psychophysiology, Instituto de Psiquiatria, Faculdade de Medicina - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Laboratório de Neurofisiolgia e Comportamento, Departamento de Fisiologia e Farmacologia, Instituto Biomédico - Universidade Federal Fluminense, Nitéroi, RJ, Brazil
| | - Lucas Rego Ramos
- Laboratory of Neuroimaging and Psychophysiology, Instituto de Psiquiatria, Faculdade de Medicina - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Mariana Calixto Acchar
- Laboratory of Neuroimaging and Psychophysiology, Instituto de Psiquiatria, Faculdade de Medicina - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Universidade Estacio de Sá (UNESA), Rio de Janeiro, RJ, Brazil
| | - Tiago Arruda Sanchez
- Laboratory of Neuroimaging and Psychophysiology, Instituto de Psiquiatria, Faculdade de Medicina - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Santos-Rebouças CB, Ferreira CDS, Nogueira JDS, Brustolini OJ, de Almeida LGP, Gerber AL, Guimarães APDC, Piergiorge RM, Struchiner CJ, Porto LC, de Vasconcelos ATR. Immune response stability to the SARS-CoV-2 mRNA vaccine booster is influenced by differential splicing of HLA genes. Sci Rep 2024; 14:8982. [PMID: 38637586 PMCID: PMC11026523 DOI: 10.1038/s41598-024-59259-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 04/08/2024] [Indexed: 04/20/2024] Open
Abstract
Many molecular mechanisms that lead to the host antibody response to COVID-19 vaccines remain largely unknown. In this study, we used serum antibody detection combined with whole blood RNA-based transcriptome analysis to investigate variability in vaccine response in healthy recipients of a booster (third) dose schedule of the mRNA BNT162b2 vaccine against COVID-19. The cohort was divided into two groups: (1) low-stable individuals, with antibody concentration anti-SARS-CoV IgG S1 below 0.4 percentile at 180 days after boosting vaccination; and (2) high-stable individuals, with antibody values greater than 0.6 percentile of the range in the same period (median 9525 [185-80,000] AU/mL). Differential gene expression, expressed single nucleotide variants and insertions/deletions, differential splicing events, and allelic imbalance were explored to broaden our understanding of the immune response sustenance. Our analysis revealed a differential expression of genes with immunological functions in individuals with low antibody titers, compared to those with higher antibody titers, underscoring the fundamental importance of the innate immune response for boosting immunity. Our findings also provide new insights into the determinants of the immune response variability to the SARS-CoV-2 mRNA vaccine booster, highlighting the significance of differential splicing regulatory mechanisms, mainly concerning HLA alleles, in delineating vaccine immunogenicity.
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Affiliation(s)
- Cíntia Barros Santos-Rebouças
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Cristina Dos Santos Ferreira
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil
| | - Jeane de Souza Nogueira
- Histocompatibility and Cryopreservation Laboratory, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Otávio José Brustolini
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil
| | - Luiz Gonzaga Paula de Almeida
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil
| | - Alexandra Lehmkuhl Gerber
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil
| | - Ana Paula de Campos Guimarães
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil
| | - Rafael Mina Piergiorge
- Department of Genetics, Institute of Biology Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Cláudio José Struchiner
- School of Applied Mathematics, Getúlio Vargas Foundation, Rio de Janeiro, Brazil
- Social Medicine Institute Hesio Cordeiro, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Luís Cristóvão Porto
- Histocompatibility and Cryopreservation Laboratory, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Ana Tereza Ribeiro de Vasconcelos
- Bioinformatics Laboratory-LABINFO, National Laboratory of Scientific Computation LNCC/MCTIC, Getúlio Vargas, Av., 333, Quitandinha, Petrópolis, Rio de Janeiro, 25651‑075, Brazil.
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Gonzalez RC, Bezerra de Lima LC, Passos P, Silva MJJ. The good, the bad and the boa: An unexpected new species of a true boa revealed by morphological and molecular evidence. PLoS One 2024; 19:e0298159. [PMID: 38630841 PMCID: PMC11023597 DOI: 10.1371/journal.pone.0298159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 01/15/2024] [Indexed: 04/19/2024] Open
Abstract
Snakes of the genus Boa are outstanding elements of the New World biota with a broad sociological influence on pop culture. Historically, several taxa have been recognized in the past 300 years, being mostly described in the early days of binomial nomenclature. As a rule, these taxa were recognized based on a suite of phenotypic characters mainly those from the external morphology. However, there is a huge disagreement with respect to the current taxonomy and available molecular phylogenies. In order to reconcile both lines of evidence, we investigate the phylogenetic reconstruction (using mitochondrial and nuclear genes) of the genus in parallel to the detailed study of some phenotypic systems from a geographically representative sample of the cis-Andean mainland Boa constrictor. We used cyt-b only (744bp) from 73 samples, and cyt-b, ND4, NTF3, and ODC partial sequences (in a total of 2305 bp) from 35 samples, comprising nine currently recognized taxa (species or subspecies), to infer phylogenetic relationships of boas. Topologies recovered along all the analyses and genetic distances obtained allied to a unique combination of morphological traits (colouration, pholidosis, meristic, morphometric, and male genitalia features) allowed us to recognize B. constrictor lato sensu, B. nebulosa, B. occidentalis, B. orophias and a distinct lineage from the eastern coast of Brazil, which we describe here as a new species, diagnosing it from the previously recognized taxa. Finally, we discuss the minimally necessary changes in the taxonomy of Boa constrictor complex; the value of some usually disregarded phenotypic character system; and we highlight the urgency of continuing environmental policy to preserve one of the most impacted Brazilian hotspots, the Atlantic Forest, which represents an ecoregion full of endemism.
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Affiliation(s)
- Rodrigo Castellari Gonzalez
- Museu de História Natural do Ceará Prof. Dias da Rocha, Universidade Estadual do Ceará, Pacoti, Ceará, Brazil
- Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Paulo Passos
- Departamento de Vertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Pereira Duarte R, Cancela Ramos HC, Rodrigues Xavier L, Azevedo Vimercati Pirovani A, Souza Rodrigues A, Turquetti-Moraes DK, Rodrigues da Silva Junior I, Motta Venâncio T, Silveira V, Gonzaga Pereira M. Comparative proteomic analysis of papaya bud flowers reveals metabolic signatures and pathways driving hermaphrodite development. Sci Rep 2024; 14:8867. [PMID: 38632280 PMCID: PMC11024100 DOI: 10.1038/s41598-024-59306-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
Papaya (Carica papaya) is a trioecious species with female, male, and hermaphrodite plants. Given the sex segregation, selecting hermaphroditic plants is vital for orchard establishment due to their greater commercial value. However, selecting hermaphrodite plants through sexing is laborious and costly. Moreover, environmental stressors can exacerbate the issue by potentially inducing abnormal flower development, thus affecting fruit quality. Despite these challenges, the molecular mechanisms governing sex development in papaya remain poorly understood. Thus, this study aimed to identify proteins associated with sex development in female and hermaphrodite flowers of papaya through comparative proteomic analysis. Proteins from flower buds at the early and late developmental stages of three papaya genotypes (UENF-CALIMAN 01, JS12, and Sunrise Solo 72/12) were studied via proteomic analysis via the combination of the shotgun method and nanoESI-HDMSE technology. In buds at an early stage of development, 496 (35.9%) proteins exhibited significantly different abundances between sexes for the SS72/12 genotype, 139 (10%) for the JS12 genotype, and 165 (11.9%) for the UC-01 genotype. At the final stage of development, there were 181 (13.5%) for SS72/12, 113 (8.4%) for JS12, and 125 (9.1%) for UC-01. The large group of differentially accumulated proteins (DAPs) between the sexes was related to metabolism, as shown by the observation of only the proteins that exhibited the same pattern of accumulation in the three genotypes. Specifically, carbohydrate metabolism proteins were up-regulated in hermaphrodite flower buds early in development, while those linked to monosaccharide and amino acid metabolism increased during late development. Enrichment of sporopollenin and phenylpropanoid biosynthesis pathways characterizes hermaphrodite samples across developmental stages, with predicted protein interactions highlighting the crucial role of phenylpropanoids in sporopollenin biosynthesis for pollen wall formation. Most of the DAPs played key roles in pectin, cellulose, and lignin synthesis and were essential for cell wall formation and male flower structure development, notably in the pollen coat. These findings suggest that hermaphrodite flowers require more energy for development, likely due to complex pollen wall formation. Overall, these insights illuminate the molecular mechanisms of papaya floral development, revealing complex regulatory networks and energetic demands in the formation of male reproductive structures.
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Affiliation(s)
- Rafaela Pereira Duarte
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil.
| | - Helaine Christine Cancela Ramos
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Lucas Rodrigues Xavier
- Laboratório de Biotecnologia - LBT, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Adriana Azevedo Vimercati Pirovani
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Alex Souza Rodrigues
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Dayana Kelly Turquetti-Moraes
- Laboratório de Química e Função de Proteínas e Peptídeos - LQFPP, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Izaias Rodrigues da Silva Junior
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Thiago Motta Venâncio
- Laboratório de Química e Função de Proteínas e Peptídeos - LQFPP, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Vanildo Silveira
- Laboratório de Biotecnologia - LBT, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
- Unidade de Biologia Integrativa, Setor de Genômica e Proteômica, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
| | - Messias Gonzaga Pereira
- Laboratório de Melhoramento Genético Vegetal - LMGV, Universidade Estadual do Norte Fluminense Darcy Ribeiro-UENF, Campos dos Goytacazes, 28.013-602, Brazil
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Simão FA, Almeida MM, Rosa HS, Marques EA, Leão RS. Genetic determinants of antimicrobial resistance in polymyxin B resistant Pseudomonas aeruginosa isolated from airways of patients with cystic fibrosis. Braz J Microbiol 2024:10.1007/s42770-024-01311-3. [PMID: 38619733 DOI: 10.1007/s42770-024-01311-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/21/2024] [Indexed: 04/16/2024] Open
Abstract
Pseudomonas aeruginosa is the main pathogen associated with pulmonary exacerbation in patients with cystic fibrosis (CF). CF is a multisystemic genetic disease caused by mutations in the cystic fibrosis transmembrane conductance regulator gene, which mainly affects pulmonary function. P. aeruginosa isolated from individuals with CF in Brazil is not commonly associated with multidrug resistance (MDR), especially when compared to global occurrence, where the presence of epidemic clones, capable of expressing resistance to several drugs, is often reported. Due to the recent observations of MDR isolates of P. aeruginosa in our centers, combined with these characteristics, whole-genome sequencing was employed for analyses related to antimicrobial resistance, plasmid identification, search for phages, and characterization of CF clones. All isolates in this study were polymyxin B resistant, exhibiting diverse mutations and reduced susceptibility to carbapenems. Alterations in mexZ can result in the overexpression of the MexXY efflux pump. Mutations in oprD, pmrB, parS, gyrA and parC may confer reduced susceptibility to antimicrobials by affecting permeability, as observed in phenotypic tests. The phage findings led to the assumption of horizontal genetic transfer, implicating dissemination between P. aeruginosa isolates. New sequence types were described, and none of the isolates showed an association with epidemic CF clones. Analysis of the genetic context of P. aeruginosa resistance to polymyxin B allowed us to understand the different mechanisms of resistance to antimicrobials, in addition to subsidizing the understanding of possible relationships with epidemic strains that circulate among individuals with CF observed in other countries.
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Affiliation(s)
- Felipe A Simão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mila M Almeida
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Heloísa S Rosa
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Elizabeth A Marques
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Robson S Leão
- Laboratório de Microbiologia da Fibrose Cística, Departamento de Microbiologia, Imunologia e Parasitologia, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
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Verly E, Jolliet O. Moderate low-cost modifications in diet prevent a substantial number of deaths and mitigate environmental impacts in Brazil. Eur J Nutr 2024:10.1007/s00394-024-03375-1. [PMID: 38622295 DOI: 10.1007/s00394-024-03375-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 03/16/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE This study aimed to estimate the health, economic, and environmental impacts of moderate simulated interventions on dietary intake in Brazil. METHODS Data on food price and consumption were obtained from three nationwide surveys. Baseline dietary intake was estimated for 33,859 individuals aged 25 years and older. Counterfactual intakes were based on six hypothetical intervention scenarios, by changing the weekly frequency and serving size in low or high consumers of fruit and vegetables (FV), milk, whole grains, red and processed meats, and sugar-sweetened beverages. For each scenario, we estimated the attributable number of deaths and disability-adjusted life years (DALY), monetary cost, environmental impacts (14 midpoint indicators), and environmentally-mediated health impacts. RESULTS Compared with the baseline intake and cost, the most expensive intervention (+ 8.3%) was to increase FV intake (+ 125 g), resulting in a 1.2% reduction in all-cause mortality (16,307 deaths/year). The cheapest (- 9.9%) was to reduce red and processed meat intake (- 40 g), resulting in a 1.1% reduction in all-cause mortality (14,272 deaths/year). The combined intervention was, on average, 3.7% cheaper than the baseline cost, resulting in an increase in diet cost for 30% of the population (45-22% in the lower- and higher-income groups); all-cause mortality would be reduced by 3.8% (49,488 deaths/year). Interventions targeting red and processed meats would reduce emissions and resource use by 35-55%, in addition to reducing 2300 DALYs/year. CONCLUSION A meaningful number of deaths can be avoided and environmental impacts reduced through moderate and potentially affordable diet modifications.
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Affiliation(s)
- Eliseu Verly
- Institute of Social Medicine, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro, RJ, 20550-013, Brazil.
| | - Olivier Jolliet
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, MI, 48109, USA
- Department of Sustain, Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, 2800, Kgs. Lyngby, Hovedstaden, Denmark
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13
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Rodrigues PDA, de Oliveira AT, Ramos-Filho AM, de Pinho JV, Neves GL, Conte-Junior CA. Human health risks assessment of the fluctuations in mercury levels in seafood from different key regions of Rio de Janeiro, Brazil. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-33267-0. [PMID: 38607486 DOI: 10.1007/s11356-024-33267-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/05/2024] [Indexed: 04/13/2024]
Abstract
Mercury (Hg) contamination on the Brazilian southeast coast has been highlighted, especially in relation to species of commercial importance. This study aimed to quantify the Hg concentration in species of mussels, fish, and crabs obtained from fishing colonies on the beaches of the west and south of the city of Rio de Janeiro, investigate the possible effect of seasonality, sex, and location sampling, and finally, the risk to consumer health in four different age groups. The difference between cooked and raw commercially available mussel samples was also verified. The main results highlight that the fish presented higher levels of Hg and that the mussel samples sold cooked presented lower levels of Hg when compared to the raw ones. For Micropogonias furnieri, Sardinella brasiliensis, and Callinectes spp., the season variable influenced Hg concentrations, while only for Merluccius merluccius was a difference between the sexes identified, with males having the highest values. Although Hg concentrations in animals were below the permitted limit, consumption of all species exceeded the monthly intake limit for this metal. For the hazard quotient (HQ) calculation, most species presented HQ > 1, especially when ingested by the child population. These results are fundamental for designing consumption strategies for these animals, in order to prioritize the acquisition of some species over others, depending on the location and/or season, for each age group, with the aim of maintaining seafood consumption with minimal risk to the population's health.
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Affiliation(s)
- Paloma de Almeida Rodrigues
- Analytical and Molecular Laboratorial Center (CLAn), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil.
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil.
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil.
| | - Adriano Teixeira de Oliveira
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil
- Animal Morphophysiology Laboratory, Federal Institute of Education, Science and Technology of Amazonas (IFAM), Manaus Centro Campus (CMC), Manaus, AM, 69020-120, Brazil
| | - Alexandre Mendes Ramos-Filho
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil
| | - Julia Vianna de Pinho
- Analytical and Molecular Laboratorial Center (CLAn), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil
- Graduate Program in Sanitary Surveillance (PPGVS), National Institute of Health Quality Control (INCQS), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, RJ, 21040-900, Brazil
| | - Gustavo Lata Neves
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil
| | - Carlos Adam Conte-Junior
- Analytical and Molecular Laboratorial Center (CLAn), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil
- Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-598, Brazil
- Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil
- Graduate Program in Sanitary Surveillance (PPGVS), National Institute of Health Quality Control (INCQS), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, RJ, 21040-900, Brazil
- Graduate Program in Veterinary Hygiene (PPGHV), Faculty of Veterinary Medicine, Fluminense Federal University (UFF), Vital Brazil Filho, Niterói, RJ, 24220-000, Brazil
- Graduate Program in Food Science (PPGCAL), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941-909, Brazil
- Graduate Program in Chemistry (PGQu), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941 909, Brazil
- Graduate Program in Biochemistry (PPGBq), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, RJ, 21941 909, Brazil
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Cunha-Ferreira IC, Vizzotto CS, Freitas MAM, Peixoto J, Carvalho LS, Tótola MR, Thompson FL, Krüger RH. Genomic and physiological characterization of Kitasatospora sp. nov., an actinobacterium with potential for biotechnological application isolated from Cerrado soil. Braz J Microbiol 2024:10.1007/s42770-024-01324-y. [PMID: 38605254 DOI: 10.1007/s42770-024-01324-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 03/21/2024] [Indexed: 04/13/2024] Open
Abstract
An Actinobacteria - Kitasatospora sp. K002 - was isolated from the soil of Cerrado, a savanna-like Brazilian biome. Herein, we conducted a phylogenetic, phenotypic and physiological characterization, revealing its potential for biotechnological applications. Kitasatospora sp. K002 is an aerobic, non-motile, Gram-positive bacteria that forms grayish-white mycelium on solid cultures and submerged spores with vegetative mycelia on liquid cultures. The strain showed antibacterial activity against Bacillus subtilis, Pseudomonas aeruginosa and Escherichia coli. Genomic analysis indicated that Kitasatospora xanthocidica JCM 4862 is the closest strain to K002, with a dDDH of 32.8-37.8% and an ANI of 86.86% and the pangenome investigations identified a high number of rare genes. A total of 60 gene clusters of 22 different types were detected by AntiSMASH, and 22 gene clusters showed low similarity (< 10%) with known compounds, which suggests the potential production of novel bioactive compounds. In addition, phylogenetic analysis and morphophysiological characterization clearly distinguished Kitasatospora sp. K002 from other related species. Therefore, we propose that Kitasatospora sp. K002 should be recognized as a new species of the genus Kitasatospora - Kitasatospora brasiliensis sp. nov. (type strains = K002).
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Affiliation(s)
- I C Cunha-Ferreira
- Laboratory of Enzymology, Department of Cellular Biology, University of Brasília (UNB), Brasília, Brazil
| | - C S Vizzotto
- Laboratory of Environmental Sanitation, Department of Civil and Environmental Engineering, University of Brasília (UNB), Brasília, Brazil
| | - M A M Freitas
- Laboratory of Microbiology, Biology Institute, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - J Peixoto
- Laboratory of Enzymology, Department of Cellular Biology, University of Brasília (UNB), Brasília, Brazil
| | - L S Carvalho
- Laboratory of Enzymology, Department of Cellular Biology, University of Brasília (UNB), Brasília, Brazil
| | - M R Tótola
- Laboratório de Biotecnologia e Biodiversidade para o Meio Ambiente, Universidade Federal de Viçosa (UFV), Viçosa, Brazil
| | - F L Thompson
- Laboratory of Microbiology, Biology Institute, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - R H Krüger
- Laboratory of Enzymology, Department of Cellular Biology, University of Brasília (UNB), Brasília, Brazil.
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Esperança VJR, Moreira PIO, Chávez DWH, Freitas-Silva O. Evaluation of the safety and quality of Brazil nuts ( Bertholletia excelsa) using the tools of dna sequencing technology and aflatoxin profile. Front Nutr 2024; 11:1357778. [PMID: 38665301 PMCID: PMC11044678 DOI: 10.3389/fnut.2024.1357778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
Introduction Brazil nuts (BNs) result from sustainable extraction and are widely exploited in the Amazon region. Due to the production characteristics in the forest and the nutritional characteristics of these nuts, the occurrence of fungal contamination and the presence of aflatoxins are extensively discussed in the literature as a great aspect of interest and concern. This study aims to evaluate the microbial profile through DNA sequencing and amplification of 16S and ITS genes for bacterial and fungal analysis, respectively, and the presence of mycotoxins using high-performance liquid chromatography with fluorescence detection (HPLC-FD) from different fractions of the nuts processed. Methods The BN samples, harvest A (HA) and harvest B (HB), from two different harvests were collected in an extractive cooperative in the Amazon region for microbiological analysis (from DNA extraction and amplification of 16S genes, bacteria analysis, and ITS for fungi) and mycotoxins (aflatoxins AFB1, AFB2, AFG1, and AFG2) using HPLC-FD/KobraCell®. Results and discussion The samples showed a very different microbiome and aflatoxin profile. Genera such as Rothia (HA) and Cronobacter (HB) were abundant during the analysis of bacteria; as for fungi, the genera Aspergillus, Fusarium, Penicillium, and Alternaria were also considered prevalent in these samples. Soil microorganisms, including those pathogenic and related to inadequate hygienic-sanitary production practices, as well as aflatoxins, were found in the samples. However, they were within the established limits permitted by Brazilian legislation. Nuts have a diverse microbiota and are not restricted to fungi of the genus Aspergillus. The microbiological and toxicological profile can vary significantly within the same nut in the same extraction region and can be exacerbated by global climate changes. Therefore, it is necessary to advance sanitary educational actions by applying good production practices and inspection programs to ensure the sustainability and quality of the BN production chain.
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Affiliation(s)
- Victor J. R. Esperança
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/UNIRIO), Rio de Janeiro, Brazil
| | - Paula I. O. Moreira
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/UNIRIO), Rio de Janeiro, Brazil
| | - Davy W. H. Chávez
- Post Graduate Program in Food Science and Technology, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | - Otniel Freitas-Silva
- Embrapa Food Technology, Office of Research and Development (Sector: Operational Units – Plan V), Rio de Janeiro, Brazil
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de Oliveira Sant'Anna L, Dos Santos LS, Olivella JGB, da Cruz Mota M, Ramos JN, Baio PVP, da Rocha DJPG, Vieira VV, Almuzara M, Vay C, Barberis C, Castro TLDP, Seyffert N, Pacheco LGC, Mattos-Guaraldi AL. Description of Corynebacterium hiratae sp. nov. isolated from a human tissue bone a novel member of Corynebacterium Genus. Braz J Microbiol 2024:10.1007/s42770-024-01331-z. [PMID: 38598149 DOI: 10.1007/s42770-024-01331-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 04/02/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Corynebacterium spp. are widely disseminated in the environment, and they are part of the skin and mucosal microbiota of animals and humans. Reports of human infections by Corynebacterium spp. have increased considerably in recent years and the appearance of multidrug resistant isolates around the world has drawn attention. OBJECTIVES To describe a new species of Corynebacterium from human tissue bone is described after being misidentified using available methods. METHODS For taxonomic analyses, phylogenetic analysis of 16S rRNA and rpoB genes, in silico DNA-DNA hybridization, average nucleotide and amino acid identity, multilocus sequence analysis, and phylogenetic analysis based on the complete genome were used. FINDINGS Genomic taxonomic analyzes revealed values of in silico DNA-DNA hybridization, average nucleotide and amino acids identity below the values necessary for species characterization between the analyzed isolates and the closest phylogenetic relative Corynebacterium aurimucosum DSM 44532T. MAIN CONCLUSIONS Genomic taxonomic analyzes indicate that the isolates analyzed comprise a new species of the Corynebacterium genus, which we propose to name Corynebacterium hiratae sp. nov. with isolate 332T (= CBAS 826T = CCBH 35,014T) as the type strain.
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Affiliation(s)
- Lincoln de Oliveira Sant'Anna
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil.
| | - Louisy Sanches Dos Santos
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil
| | - Julianna Giordano Botelho Olivella
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil
| | - Mariana da Cruz Mota
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil
| | - Juliana Nunes Ramos
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil
| | | | | | - Verônica Viana Vieira
- Faculty of Pharmacy and Biochemistry and Bacteriology, Department of Clinical Biochemistry, University of Buenos Aires, Autonomous City of Buenos Aires, Argentina
| | - Marisa Almuzara
- Interdisciplinary Laboratory of Medical Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Carlos Vay
- Interdisciplinary Laboratory of Medical Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Claudia Barberis
- Interdisciplinary Laboratory of Medical Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Núbia Seyffert
- Institute of Health Sciences, Department of Biotechnology, Federal University of Bahia, Salvador, Brazil
| | | | - Ana Luíza Mattos-Guaraldi
- Laboratory of Diphtheria and Corynebacteria of Clinical Relevance, Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Vinte e Oito de Setembro 87, Fundos, 3º andar. Vila Isabel, Rio de Janeiro, RJ, CEP:20551-030, Brazil
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Carlisbino T, de Farias BDM, Sedor FA, Soares MB, Schultz CL. Replacement tooth in mesosaurs and new data on dental microanatomy and microstructure. Anat Rec (Hoboken) 2024. [PMID: 38581219 DOI: 10.1002/ar.25442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 04/08/2024]
Abstract
The Permian mesosaurs are well known for being the earliest amniotes to exhibit adaptations for living in a marine environment (Irati-Whitehill Sea). In addition to their set of skeletal features associated with aquatic dwelling life, their dentition includes important characteristics related to feeding in this habitat, which is described in this work, based on the analysis of mesosaur specimens from the Lower Permian Irati Formation of Brazil. Mesosaurs have several slender, conical teeth bordered by enamel apicobasal ridges, a feature predominantly found in aquatic amniotes. Internally, the dentine walls are formed by the arrangement of layers of orthodentine and globular dentine. To prevent tooth loss, the basal area is equipped with plicidentine, a particular type of orthodentine, allied with cementum, alveolar bone trabeculae, and periodontal space that reinforces anchorage and provides some flexibility. The teeth are replaced in a labio-vertical path, and the dentition replaces alternately. This feature is regarded as plesiomorphic, and it ensures the oral cavity is supplied with enough teeth. However, these features do not the assessment of whether mesosaurs teeth were capable of piercing prey with resistant tegument. Instead, we interpret this adaptation as a mechanism for catching prey, at least in adults, and we endorse a possible ontogenetic dietary shift from small to large forms.
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Affiliation(s)
- Thiago Carlisbino
- Programa de Pós-graduação em Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Fernando Antonio Sedor
- Museu de Ciências Naturais, Setor de Ciências Biológicas, Universidade Federal do Paraná, Curitiba, Brazil
| | - Marina Bento Soares
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cesar Leandro Schultz
- Programa de Pós-graduação em Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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18
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Proença AB, Medeiros GR, Reis GDS, Losito LDF, Ferraz LM, Bargut TCL, Soares NP, Alexandre-Santos B, Campagnole-Santos MJ, Magliano DC, Nobrega ACLD, Santos RAS, Frantz EDC. Adipose tissue plasticity mediated by the counterregulatory axis of the renin-angiotensin system: Role of Mas and MrgD receptors. J Cell Physiol 2024. [PMID: 38577921 DOI: 10.1002/jcp.31265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/28/2024] [Accepted: 03/18/2024] [Indexed: 04/06/2024]
Abstract
The renin-angiotensin system (RAS) is an endocrine system composed of two main axes: the classical and the counterregulatory, very often displaying opposing effects. The classical axis, primarily mediated by angiotensin receptors type 1 (AT1R), is linked to obesity-associated metabolic effects. On the other hand, the counterregulatory axis appears to exert antiobesity effects through the activation of two receptors, the G protein-coupled receptor (MasR) and Mas-related receptor type D (MrgD). The local RAS in adipose organ has prompted extensive research into white adipose tissue and brown adipose tissue (BAT), with a key role in regulating the cellular and metabolic plasticity of these tissues. The MasR activation favors the brown plasticity signature in the adipose organ by improve the thermogenesis, adipogenesis, and lipolysis, decrease the inflammatory state, and overall energy homeostasis. The MrgD metabolic effects are related to the maintenance of BAT functionality, but the signaling remains unexplored. This review provides a summary of RAS counterregulatory actions triggered by Mas and MrgD receptors on adipose tissue plasticity. Focus on the effects related to the morphology and function of adipose tissue, especially from animal studies, will be given targeting new avenues for treatment of obesity-associated metabolic effects.
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Affiliation(s)
- Ana Beatriz Proença
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Gabriela Rodrigues Medeiros
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Guilherme Dos Santos Reis
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Luiza da França Losito
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Luiza Mazzali Ferraz
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Thereza Cristina Lonzetti Bargut
- Department of Basic Sciences, Nova Friburgo Health Institute, Fluminense Federal University, Nova Friburgo, Rio de Janeiro, Brazil
| | - Nícia Pedreira Soares
- Department of Physiology and Biophysics, National Institute of Science and Technology in Nanobiopharmaceutics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Beatriz Alexandre-Santos
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Maria Jose Campagnole-Santos
- Department of Physiology and Biophysics, National Institute of Science and Technology in Nanobiopharmaceutics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - D'Angelo Carlo Magliano
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Antonio Claudio Lucas da Nobrega
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
| | - Robson Augusto Souza Santos
- Department of Physiology and Biophysics, National Institute of Science and Technology in Nanobiopharmaceutics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Eliete Dalla Corte Frantz
- Department of Physiology, Laboratory of Exercise Sciences, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
- Department of Morphology, Research Center on Morphology and Metabolism, Biomedical Institute, Fluminense Federal University, Niteroi, Rio de Janeiro, Brazil
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19
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Manes S, Vale MM, Pires APF. Nature-based solutions potential for flood risk reduction under extreme rainfall events. Ambio 2024:10.1007/s13280-024-02005-8. [PMID: 38580898 DOI: 10.1007/s13280-024-02005-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/09/2024] [Accepted: 02/26/2024] [Indexed: 04/07/2024]
Abstract
Climate change will substantially increase extreme rainfall events, especially in the Tropics, enhancing flood risks. Such imminent risks require climate adaptation strategies to endure extreme rainfall and increase drainage systems. Here, we evaluate the potential of nature-based solutions by using an ecosystem service modeling approach, evaluating the impact of extreme rainfall events on flood risks in a large urban area and with a real-world land recovery plan. We evaluate the cost-effectiveness of four different land recovery scenarios and associated co-benefits, based on a gradient increase in area recovered and cost of implementation. Although the scenarios reveal increasing flood risk reduction and co-benefits along with greater proportion of land recovery, the most cost-effective scenario was the one with an intermediate land recovery where 30% of the study area would be reforested. We emphasize the striking benefits of nature-based solutions for flood risk reduction in cities, considering landscape scale and stakeholders' needs.
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Affiliation(s)
- Stella Manes
- Graduate Program in Ecology (PPGE/UFRJ), Federal University of Rio de Janeiro (UFRJ), Av. Carlos Chagas Filho, 373, Centro de Ciências da Saúde, Bloco A, Rio de Janeiro, RJ, 21941-590, Brazil.
- International Institute for Sustainability (IIS), Rio de Janeiro, RJ, Brazil.
| | - Mariana M Vale
- Ecology Department, Instituto de Biologia (IB/UFRJ), Federal University of Rio de Janeiro (UFRJ), Av. Carlos Chagas Filho, 373, Centro de Ciências da Saúde, Bloco A, Rio de Janeiro, RJ, 21941-590, Brazil
| | - Aliny P F Pires
- Ecology Department, Instituto de Biologia Roberto Alcantara Gomes, Pavilhão Reitor Haroldo Lisboa da Cunha, Rio de Janeiro State University (UERJ), R. São Francisco Xavier, 524, Maracanã, Rio de Janeiro, RJ, 20550-013, Brazil
- Brazilian Foundation for Sustainable Development (FBDS), Rio de Janeiro, RJ, Brazil
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20
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Chaves JF, Noris LF, Yokoyama E, Osorio G. FG, Mendoza LAF, Araujo JFDF. Multisensor Magnetic Scanning Microscope for Remanent Magnetic Field Measurements. Sensors (Basel) 2024; 24:2294. [PMID: 38610505 PMCID: PMC11013988 DOI: 10.3390/s24072294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
Magnetic Scanning Microscopy (MSM) emerged with the aim of allowing the visualization of magnetic fields of a sample or material through scanning and proved particularly useful for geology, biomedicine, characterization of magnetic materials, and in the steel industry. In this regard, the reading system of an MSM was modified using a μ-metal magnetic shielding structure to analyze remanent fields. The MSM was adapted to perform readings using two different types of sensors. The sensitive area of the sensors was evaluated, and the HQ-0811 (AKM-Asahi KaseiTM Microdevices) and STJ-010 (Micro MagneticsTM) sensors were chosen, with the HQ-0811 standardized on Printed Circuit Boards (PCBs) to facilitate handling and increase the system's robustness. In the shielded chamber, two piezoelectric ANC-150 stepper motors (Attocube Systems) were used, arranged planarly, to allow the movement of the analyzed samples under the mounted sensors. To acquire data from the sensors, the Precision Current Source Model 6220 and the Nanovoltmeter Model 2182A (both from Keithley) were used, along with Keithley's Delta-Mode integrated system. To analyze the system's effectiveness, three distinct samples were analyzed for calibration, and a MATLAB program was written to analyze the images and extract the material's magnetization. Additionally, a rock sample from the Parnaíba Basin was mapped to demonstrate the system's capabilities.
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Affiliation(s)
- João F. Chaves
- Department of Physics, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil; (J.F.C.); (L.F.N.); (F.G.O.G.)
| | - Leosdan F. Noris
- Department of Physics, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil; (J.F.C.); (L.F.N.); (F.G.O.G.)
| | - Elder Yokoyama
- Department of Geosciences, University of Brasília, Brasília 70910-900, Brazil;
| | - Fredy G. Osorio G.
- Department of Physics, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil; (J.F.C.); (L.F.N.); (F.G.O.G.)
| | - Leonardo A. F. Mendoza
- Department of Electrical Engineering, State University of Rio de Janeiro-UERJ, Rio de Janeiro 20550-900, Brazil;
| | - Jefferson F. D. F. Araujo
- Department of Physics, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil; (J.F.C.); (L.F.N.); (F.G.O.G.)
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21
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Silva RCMC, Ramos IB, Travassos LH, Mendez APG, Gomes FM. Evolution of innate immunity: lessons from mammalian models shaping our current view of insect immunity. J Comp Physiol B 2024:10.1007/s00360-024-01549-1. [PMID: 38573502 DOI: 10.1007/s00360-024-01549-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/23/2024] [Accepted: 03/09/2024] [Indexed: 04/05/2024]
Abstract
The innate immune system, a cornerstone for organismal resilience against environmental and microbial insults, is highly conserved across the evolutionary spectrum, underpinning its pivotal role in maintaining homeostasis and ensuring survival. This review explores the evolutionary parallels between mammalian and insect innate immune systems, illuminating how investigations into these disparate immune landscapes have been reciprocally enlightening. We further delve into how advancements in mammalian immunology have enriched our understanding of insect immune responses, highlighting the intertwined evolutionary narratives and the shared molecular lexicon of immunity across these organisms. Therefore, this review posits a holistic understanding of innate immune mechanisms, including immunometabolism, autophagy and cell death. The examination of how emerging insights into mammalian and vertebrate immunity inform our understanding of insect immune responses and their implications for vector-borne disease transmission showcases the imperative for a nuanced comprehension of innate immunity's evolutionary tale. This understanding is quintessential for harnessing innate immune mechanisms' potential in devising innovative disease mitigation strategies and promoting organismal health across the animal kingdom.
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Affiliation(s)
- Rafael Cardoso M C Silva
- Laboratory of Immunoreceptors and Signaling, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Isabela B Ramos
- Laboratório de Ovogênese Molecular de Vetores, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Entomologia Molecular, Rio de Janeiro, Brazil
| | - Leonardo H Travassos
- Laboratory of Immunoreceptors and Signaling, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana Paula Guzman Mendez
- Laboratório de Ultraestrutura Celular Hertha Meyer, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabio M Gomes
- Instituto Nacional de Entomologia Molecular, Rio de Janeiro, Brazil.
- Laboratório de Ultraestrutura Celular Hertha Meyer, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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22
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Rodriguez VA, Barrios GKP, Campos TM, Tavares LM. Critical Assessment of Novel Developments in HPGR Technology Using DEM. Materials (Basel) 2024; 17:1665. [PMID: 38612178 PMCID: PMC11012568 DOI: 10.3390/ma17071665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
Advances in high-pressure grinding roll (HGPR) technology since its first commercial application in the cement industry include new roll wear protection techniques and new confinement systems. The latter contribute to reductions in the edge effects in an attempt to reach a more homogenous product size along the rolls. Additional advances in this technology have been made in recent years, while modeling and simulation tools are also reaching maturity and can now be used to subject such novel developments to detailed scrutiny. This work applies a hybrid approach combining advanced simulations using the discrete element method, the particle replacement model and multibody dynamics to a phenomenological population balance model to critically assess two recent advances in HPGR technology: spring-loaded cheek plates and the offset roller press. Force and torque controllers, included in the EDEM 2022.1 software, were used to describe the responses of the geometries in contact with the granular material processed. Simulations showed that while the former successfully reduced the lateral bypass of the material by as much as 65% when cheek plates became severely worn, the latter demonstrated lower throughput and higher potential wear but an ability to generate a finer product than the traditional design.
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Affiliation(s)
- Victor A. Rodriguez
- Department of Metallurgical and Materials Engineering, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, Brazil; (G.K.P.B.); (T.M.C.); (L.M.T.)
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Máximo-Canadas M, Borges I. Absorption spectra of p-nitroaniline derivatives: charge transfer effects and the role of substituents. J Mol Model 2024; 30:120. [PMID: 38564015 DOI: 10.1007/s00894-024-05917-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/25/2024] [Indexed: 04/04/2024]
Abstract
CONTEXT Push-pull compounds are model systems and have numerous applications. By changing their substituents, properties are modified and new molecules for different applications can be designed. The work investigates the gas-phase electronic absorption spectra of 15 derivatives of push-pull para-nitroaniline (pNA). This molecule has applications in pharmaceuticals, azo dyes, corrosion inhibitors, and optoelectronics. Both electron-donor and electron-withdrawing groups were investigated. Employing machine learning-derived Hammett's constants σm, σm0, σR, and σI, correlations between substituents and electronic properties were obtained. Overall, the σm0 constants presented the best correlation with HOMO and LUMO energies, whereas the σR constants best agreed with the transition energy of the first band and HOMO-LUMO energy gap. Electron-donors, which have lower σR values, redshift the absorption spectrum and reduce the HOMO-LUMO energy gap. Conversely, electron-withdrawing groups (higher σR's) blueshift the spectrum and increase the energy gap. The second band maximum energies, studied here for the first time, showed no correlation with σ but tended to increase with σ. A comprehensive charge transfer (CT) analysis of the main transition of all systems was also carried out. We found that donors (lower σ's) slightly enhance the CT character of the unsubstituted pNA, whereas acceptors (higher σ's) decrease it, leading to increased local excitations within the aromatic ring. The overall CT variation is not large, except for pNA-SO2H, which considerably decreases the total CT value. We found that the strong electron donors pNA-OH, pNA-OCH3, and pNA-NH2, which have the smallest HOMO-LUMO energy gaps and lowest σ's, have potential for optoelectronic applications. The results show that none of the studied molecules is fluorescent in the gas phase. However, pNA-NH2 and pNA-COOH in cyclohexane and water reveal fluorescence upon solvation. METHODS We investigated theoretically employing the second-order algebraic diagrammatic construction (ADC(2)) ab initio wave function and time-dependent density functional theory (TDDFT) the gas-phase electronic absorption spectra of 15 derivatives of p-nitroaniline (pNA). The investigated substituents include both electron-donor (C6H5, CCH, CH3, NH2, OCH3, and OH,) and electron-withdrawing (Br, CCl3, CF3, Cl, CN, COOH, F, NO2, and SO2H) substituents.
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Affiliation(s)
- Matheus Máximo-Canadas
- Departamento de Química, Instituto Militar de Engenharia (IME), Praça General Tibúrcio, 80, Rio de Janeiro, RJ, 22290-270, Brazil
| | - Itamar Borges
- Departamento de Química, Instituto Militar de Engenharia (IME), Praça General Tibúrcio, 80, Rio de Janeiro, RJ, 22290-270, Brazil.
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Mikhraliieva A, Lima ARS, Jost CL, Nazarkovsky M, Xing Y, Zaitsev V. Mesoporous Nitrogen-Doped Holey Reduced Graphene Oxide: Preparation, Purification, and Application for Metal-Free Electrochemical Sensing of Dopamine. Small 2024:e2400650. [PMID: 38566534 DOI: 10.1002/smll.202400650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/14/2024] [Indexed: 04/04/2024]
Abstract
Holey graphenic nanomaterials with porosity within the basal plane attract significant interest. It is observed that the perforation of graphene can enhance the specific surface area of the nanosheet, ensuring effective wetting and penetration of electrolytes to the electrode surface, facilitating rapid charge transfer, and boosting the electrocatalytic efficacy of the transducers. This study reports the first example of nitrogen-doped holey reduced graphene oxide with a mesoporous morphology of the graphene basal plane (N-MHG). It is shown that N-MHG can be synthesized through a one-step hydrothermal treatment of GO using NH3 and H2O2. A straightforward procedure for the purification of N-MHG has also been developed. AFM, TEM, and Raman analyses have revealed that N-MHG possesses a highly mesoporous network structure with a pore size ranging from 10 to 50 nm. X-ray photoelectron spectroscopy data have indicated a partial reduction of the graphene oxide sheets during the etching process but also show a 3-5 times higher content of C═O and O-C═O fragments compared to rGO. This could account for the remarkable stability of the N-MHG aqueous suspension. An electrochemical sensor for dopamine analysis is assembled on a glassy carbon electrode with N-MHG/Nafion membrane and characterized by cyclic voltammetry and electrochemical impedance spectroscopy.
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Affiliation(s)
- Albina Mikhraliieva
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Marquês de Sao Vicente Street, 225, Rio de Janeiro, RJ, 22451-900, Brazil
| | - Adriano R S Lima
- Department of Chemistry, Laboratório de Plataformas Eletroquímicas, The Universidade Federal de Santa Catarina, Florianópolis, SC, CEP 88040-900, Brazil
| | - Cristiane L Jost
- Department of Chemistry, Laboratório de Plataformas Eletroquímicas, The Universidade Federal de Santa Catarina, Florianópolis, SC, CEP 88040-900, Brazil
| | - Michael Nazarkovsky
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Marquês de Sao Vicente Street, 225, Rio de Janeiro, RJ, 22451-900, Brazil
- Mount Engineering, Consulting, Commerce and Participation Ltd, 45 Treze de Maio Av., Rio de Janeiro, RJ, 20031-007, Brazil
| | - Yutao Xing
- Laboratório de Microscopia Eletrônica de Alta Resolução, Centro de Caracterização Avançada para a Indústria de Petróleo (LaMAR/CAIPE), Universidade Federal Fluminense, Niterói, RJ, 24210-346, Brazil
| | - Volodymyr Zaitsev
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Marquês de Sao Vicente Street, 225, Rio de Janeiro, RJ, 22451-900, Brazil
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Abelenda VLB, da Costa CH, Firmida MDC, Lopes AJ. Evaluating the contribution of the Glittre-ADL test in adults with cystic fibrosis. Physiother Res Int 2024; 29:e2087. [PMID: 38551092 DOI: 10.1002/pri.2087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 01/15/2024] [Accepted: 03/18/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND AND OBJECTIVES Cardiopulmonary and skeletal muscle impairment and poor physical activity are potential contributors to reduced functional capacity in cystic fibrosis (CF). The Glittre-ADL test (TGlittre) has great potential for clinical use in adult CF adults, as it meets the need for a comprehensive assessment of physical function using tasks similar to activities of daily living. This study aimed to evaluate the performance of TGlittre in CF adults compared to the 6-min walk test (6MWT) and, secondarily, to quantify the associations of their results with pulmonary function, muscle strength, and health-related quality of life (HRQoL). METHODS This cross-sectional study evaluated 34 CF adults and compared them with 34 subjects from a control group. The participants underwent the following assessments: functional capacity using TGlittre and 6MWT; spirometry; respiratory muscle strength; handgrip strength (HGS); and HRQoL using the Cystic Fibrosis Questionnaire-Revised (CFQ-R). RESULTS While CF patients showed a longer time to perform TGlittre compared to controls (134 (119-150) versus 107 (95-126) % of the predicted time p = 0.0002), no difference between these groups was observed in the 6MWT. When the second TGlittre was compared to the first TGlittre, there was a significant decrease in total time for both CF patients (p < 0.0001) and controls (p = 0.0001). TGlittre time correlated with 6MWT distance (6MWD) (rs = -0.641, p < 0.0001), HGS (rs = -0.364, p = 0.034), peripheral oxygen saturation at the end of the test (rs = -0.463, p = 0.006) and the "digestive symptoms" domain of CFQ-R (rs = 0.376, p = 0.028). TGlittre time was shorter in patients who engaged in regular physical activity (3.10 (2.49-3.39) min versus 3.28 (2.95-3.53) min, p = 0.016). CONCLUSIONS TGlittre is more effective than the 6MWT in detecting limitations during exercise. There is an important learning effect of TGlittre in adult CF patients. TGlittre time was correlated with 6MWD, HGS, oxygen saturation level, and the patient's level of physical activity.
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Affiliation(s)
- Vera Lucia Barros Abelenda
- Post-Graduation Programme in Medical Sciences, School of Medical Sciences, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Cláudia Henrique da Costa
- Post-Graduation Programme in Medical Sciences, School of Medical Sciences, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
- Department of Pulmonology, Piquet Carneiro Polyclinic, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Mônica de Cássia Firmida
- Department of Pulmonology, Piquet Carneiro Polyclinic, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Agnaldo José Lopes
- Post-Graduation Programme in Medical Sciences, School of Medical Sciences, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
- Department of Pulmonology, Piquet Carneiro Polyclinic, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
- Rehabilitation Sciences Post-Graduation Programme, Augusto Motta University Centre (UNISUAM), Rio de Janeiro, Brazil
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Binder LB, Rosa PB, de Sousa BM, Chagas LS, Dubljević O, Martineau FS, Mottarlini F, Castany S, Morton L, Krstanović F, Tassinari ID, Choconta JL, Pereira-Santos AR, Weinhard L, Pallegar PN, Vahsen BF, Lepiarz-Raba I, Compagnion AC, Lorente-Picón M. Neuro-immune interactions in health and disease: Insights from FENS-Hertie 2022 Winter School. Eur J Neurosci 2024; 59:1977-1992. [PMID: 38311960 DOI: 10.1111/ejn.16262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/16/2023] [Accepted: 01/07/2024] [Indexed: 02/06/2024]
Abstract
In a great partnership, the Federation of European Neuroscience Societies (FENS) and the Hertie Foundation organized the FENS-Hertie 2022 Winter School on 'Neuro-immune interactions in health and disease'. The school selected 27 PhD students and 13 postdoctoral fellows from 20 countries and involved 14 faculty members experts in the field. The Winter School focused on a rising field of research, the interactions between the nervous and both innate and adaptive immune systems under pathological and physiological conditions. A fine-tuned neuro-immune crosstalk is fundamental for healthy development, while disrupted neuro-immune communication might play a role in neurodegeneration, neuroinflammation and aging. However, much is yet to be understood about the underlying mechanisms of these neuro-immune interactions in the healthy brain and under pathological scenarios. In addition to new findings in this emerging field, novel methodologies and animal models were presented to foment research on neuro-immunology. The FENS-Hertie 2022 Winter School provided an insightful knowledge exchange between students and faculty focusing on the latest discoveries in the biology of neuro-immune interactions while fostering great academic and professional opportunities for early-career neuroscientists from around the world.
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Affiliation(s)
- Luisa B Binder
- Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, Quebec City, Canada
| | - Priscila B Rosa
- Center for Social and Affective Neuroscience (CSAN), Linköping University, Linköping, Sweden
| | - Bárbara M de Sousa
- Institute of Biomedicine (iBiMED), Department of Medical Sciences, Universidade de Aveiro, Aveiro, Portugal
| | - Luana S Chagas
- Department of Neurobiology, Institute of Biology, Fluminense Federal University, Niterói, Brazil
| | - Olga Dubljević
- Department of Neurobiology, Univerzitet u Beogradu Institut za Biološka Istraživanja Siniša Stanković, Institute for Biological Research, Beograd, Republic of Serbia
| | | | - Francesca Mottarlini
- Department of Pharmacological and Biomolecular Sciences 'Rodolfo Paoletti', Università degli Studi di Milano, Milan, Italy
| | - Sílvia Castany
- Center for Social and Affective Neuroscience (CSAN), Linköping University, Linköping, Sweden
| | - Lorena Morton
- Faculty of Medicine, Institute of Inflammation and Neurodegeneration, Otto-von-Guericke University, Magdeburg, Germany
| | - Fran Krstanović
- Faculty of Medicine, Center for Proteomics, University of Rijeka, Rijeka, Croatia
| | - Isadora D Tassinari
- Department of Physiology, Graduate Program in Physiology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jeiny L Choconta
- Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ana Raquel Pereira-Santos
- Center for Neuroscience and Cell Biology (CNC), CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | | | | | - Björn F Vahsen
- Nuffield Department of Clinical Neurosciences, Oxford Motor Neuron Disease Centre, University of Oxford, John Radcliffe Hospital, Oxford, UK
- Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford, UK
| | - Izabela Lepiarz-Raba
- BRAINCITY: Centre of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology PAS, Warsaw, Poland
| | | | - Marina Lorente-Picón
- Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
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Toledo PFS, da Cruz Araujo SH, Mantilla Afanador JG, Silva ACF, Machado FP, Rocha LM, Oliveira EE. Potential of Ocotea indecora Essential Oil for Controlling Drosophila suzukii: Molecular Predictions for Toxicity and Selectivity to Beneficial Arthropods. Neotrop Entomol 2024; 53:189-199. [PMID: 38170367 DOI: 10.1007/s13744-023-01109-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/23/2023] [Indexed: 01/05/2024]
Abstract
The protection of soft-skinned fruits against Drosophila suzukii has relied primarily on the efficacy of a few synthetic molecules. Despite their short-term efficacy, these molecules can cause environmental pollution, unintendedly affect non-target organisms, and fail to provide sustainable control. The shortfalls of using synthetic pesticides warrant the search for alternatives, such as essential oils extracted from plants, with greater eco-friendlier properties. Here, we chemically characterized and evaluated the toxicity of the essential oil extracted from leaves of Ocotea indecora (Schott) Mez (Lauraceae) against D. suzukii via two exposure pathways (ingestion and contact). We also assessed the selectivity of the essential oil to two predatory natural enemies, Eriopis connexa and Chrysoperla externa and two pollinator bees, Apis mellifera and Partamona helleri. In addition, we conducted in silico predictions to investigate potential interactions between the major compound of the essential oil and the insects' transient receptor potential (TRP) channels. Our chromatographic analysis revealed sesquirosefuran (87%) as the major compound. Higher toxicity to adults of D. suzukii was observed in contact exposure (LC50 = 0.43 μL mL-1) compared to ingestion (LC50 = 0.72 μL mL-1). However, the essential oil did not cause mortality to the non-target organisms tested here, even when applied at 2.20 μL mL-1. Molecular predictions demonstrated that sesquirosefuran binds more stably to the TRP channels of D. suzukii than to those expressed in beneficial arthropods. Collectively, our findings provide the initial framework for the potential use of O. indecora essential oil as a sustainable alternative for managing D. suzukii infestations.
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Affiliation(s)
- Pedro F S Toledo
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Department of Entomology, University of Georgia, Tifton, GA, USA
| | - Sabrina Helena da Cruz Araujo
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
- Programa de Pós-Graduação em Ciências Florestais e Ambientais, Universidade Do Federal Do Tocantins, Gurupi, Tocantins, Brazil.
| | | | | | - Francisco Paiva Machado
- Laboratório de Tecnologia de Produtos Naturais, Departamento de Tecnologia Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
- Departamento de Farmácia e Administração Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
| | - Leandro M Rocha
- Laboratório de Tecnologia de Produtos Naturais, Departamento de Tecnologia Farmacêutica, Universidade Federal Fluminense, Rio de Janeiro, Niterói, Brazil
| | - Eugênio E Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
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Schmitt MR, Martinelli AG, Kaiuca JFL, Schultz CL, Soares MB. Old fossil findings in the Upper Triassic rocks of southern Brazil improve diversity of traversodontid cynodonts (Therapsida, Cynodontia). Anat Rec (Hoboken) 2024; 307:1474-1514. [PMID: 37246488 DOI: 10.1002/ar.25244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 05/03/2023] [Accepted: 05/05/2023] [Indexed: 05/30/2023]
Abstract
In this contribution we describe a new genus and species of gomphodontosuchine cynodont from the Late Triassic Hyperodapedon Assemblage Zone (AZ) of the Santa Maria Supersequence of southern Brazil, based on material collected 20 years ago. The new taxon, Santagnathus mariensis gen. et sp. nov., is based on numerous cranial and postcranial remains, which altogether provide data on several parts of the skeleton. Santagnathus mariensis is closely related to Siriusgnathus niemeyerorum and Exaeretodon spp. and expands the knowledge about gomphodontosuchine cynodonts. Morphologically, the new species has a skull bauplan particularly similar to S. niemeyerorum and E. riograndensis, differing from them by a unique combination of traits such as three upper incisors, the absence of a descending process in the jugal, a more posterior position of the postorbital bar and a preorbital region larger than the temporal one. The new traversodontid was found associated with the rhynchosaur Hyperodapedon sp., corroborating the assignment of the cynodont fossils to the Hyperodapedon AZ. We also provide comments on the status of the Argentine traversodontid cynodont Proexaeretodon vincei, typically considered a junior synonym of Exaeretodon argentinus, and here accepted as a valid taxon.
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Affiliation(s)
- Maurício Rodrigo Schmitt
- Programa de Pós-Graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Agustín Guillermo Martinelli
- Sección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Buenos Aires, Argentina
| | - João Felipe Leal Kaiuca
- Programa de Pós-Graduação em Biodiversidade e Biologia Evolutiva, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Cesar Leandro Schultz
- Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marina Bento Soares
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Paes-Neto VD, Lacerda MB, Ezcurra MD, Raugust T, Trotteyn MJ, Soares MB, Schultz CL, Pretto FA, Francischini H, Martinelli AG. New rhadinosuchine proterochampsids from the late Middle-early Late Triassic of southern Brazil enhance the diversity of archosauriforms. Anat Rec (Hoboken) 2024; 307:851-889. [PMID: 37589539 DOI: 10.1002/ar.25294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 08/18/2023]
Abstract
Proterochampsidae is a clade of non-archosaurian archosauriforms restricted to the Middle to the Late Triassic of the Ischigualasto-Villa Unión Basin of Argentina and the Santa Maria Supersequence of Brazil. A reappraisal of proterochampsid specimens from the Brazilian Dinodontosaurus Assemblage Zone (AZ) of the Pinheiros-Chiniquá Sequence (late Ladinian-early Carnian) is presented here. One of the specimens was preliminary assigned to Chanaresuchus sp., whose type species comes from the Massetognathus-Chanaresuchus AZ of the Chañares Formation of Argentina. However, our revision indicates that it differs from Chanaresuchus, being more closely related to the middle-late Carnian Rhadinosuchus gracilis. We therefore propose the new taxon, Pinheirochampsa rodriguesi, to reallocate this specimen. Additionally, we present a revision of other putative Chanaresuchus occurrences in Brazil, including the only known specimen described for the Santacruzodon AZ (Santa Cruz do Sul Sequence; early Carnian), also proposing it as a new taxon: Kuruxuchampsa dornellesi. Both new species are characterized, among other features, by transverse expansion of the anterior end of the rostrum, similar to the condition present in Rhadinosuchus, but absent in Chanaresuchus, Gualosuchus, Pseudochampsa, and non-rhadinosuchine proterochampsids. These two new species expand the growing knowledge of the non-archosaurian archosauriform diversity during the Middle-Late Triassic in South America and enhance faunal and chronological comparisons between approximately coeval geological units between Argentina and Brazil.
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Affiliation(s)
- Voltaire D Paes-Neto
- Laboratório de Paleobiologia, Unipampa Campus São Gabriel, São Gabriel, Rio Grande do Sul, Brazil
- Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, USA
| | - Marcel B Lacerda
- Programa de Pós-Graduação em Zoologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Martín D Ezcurra
- Sección Paleontología de Vertebrados, CONICET-Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Argentina
| | - Tiago Raugust
- Instituto Federal de Educação, Ciência e Tecnologia Catarinense (IFC), Concórdia, Santa Catarina, Brazil
| | - María J Trotteyn
- Facultad de Ciencias Exactas, Físicas y Naturales UNSJ - CONICET, San Juan, Argentina
| | - Marina B Soares
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cesar L Schultz
- Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Flávio A Pretto
- Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia, Universidade Federal de Santa Maria, São João do Polêsine, Brazil
| | - Heitor Francischini
- Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Agustín G Martinelli
- Sección Paleontología de Vertebrados, CONICET-Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Argentina
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Lucas DR, Damica FZ, Toledo EB, Cogo AJD, Okorokova-Façanha AL, Gomes VM, de Oliveira Carvalho A. Bioinspired peptides induce different cell death mechanisms against opportunistic yeasts. Probiotics Antimicrob Proteins 2024; 16:649-672. [PMID: 37076595 PMCID: PMC10115610 DOI: 10.1007/s12602-023-10064-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2023] [Indexed: 04/21/2023]
Abstract
The management of fungal diseases imposes an urgent need for the development of effective antifungal drugs. Among new drug candidates are the antimicrobial peptides, and especially their derivatives. Here, we investigated the molecular mechanism of action of three bioinspired peptides against the opportunistic yeasts Candida tropicalis and Candida albicans. We assessed morphological changes, mitochondrial functionality, chromatin condensation, ROS production, activation of metacaspases, and the occurrence of cell death. Our results indicated that the peptides induced sharply contrasting death kinetics, of 6 h for RR and 3 h for D-RR to C. tropicalis and 1 h for WR to C. albicans. Both peptide-treated yeasts exhibited increased ROS levels, mitochondrial hyperpolarization, cell size reduction, and chromatin condensation. RR and WR induced necrosis in C. tropicalis and C. albicans, but not D-RR in C. tropicalis. The antioxidant ascorbic acid reverted the toxic effect of RR and D-RR, but not WR, suggesting that instead of ROS there is a second signal triggered that leads to yeast death. Our data suggest that RR induced a regulated accidental cell death in C. tropicalis, D-RR induced a programmed cell death metacaspase-independent in C. tropicalis, while WR induced an accidental cell death in C. albicans. Our results were obtained with the LD100 and within the time that the peptides induce the yeast death. Within this temporal frame, our results allow us to gain clarity on the events triggered by the peptide-cell interaction and their temporal order, providing a better understanding of the death process induced by them.
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Affiliation(s)
- Douglas Ribeiro Lucas
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Filipe Zaniratti Damica
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Estefany Braz Toledo
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Antônio Jesus Dorighetto Cogo
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Anna Lvovna Okorokova-Façanha
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - Valdirene Moreira Gomes
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil
| | - André de Oliveira Carvalho
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, nº 2000, Campos dos Goytacazes-RJ, 28013-602, Brazil.
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Londoño-Burbano A, Britto MR. Taxonomic revision of Sturisoma Swainson, 1838 (Loricariidae: Loricariinae), with descriptions of four new species. J Fish Biol 2024; 104:989-1041. [PMID: 38018606 DOI: 10.1111/jfb.15627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/12/2023] [Accepted: 11/20/2023] [Indexed: 11/30/2023]
Abstract
A taxonomic revision of Sturisoma is presented. Individuals including both type and non-type specimens of all valid species were examined. Sturisoma was found to comprise 10 valid species: Sturisoma barbatum, Sturisoma brevirostre, Sturisoma graffini, Sturisoma guentheri, Sturisoma lyra, Sturisoma monopelte, Sturisoma nigrirostrum, Sturisoma reisi, Sturisoma rostratum, and Sturisoma tenuirostre. Furthermore, four new species are described: Sturisoma ghazziae, new species, from the Araguaia River, belonging to the Tocantins-Araguaia basin, Central Brazil; Sturisoma careirensia, new species, from the middle Amazon basin, Brazil; Sturisoma rapppydanielae, new species, from the Purus River, Amazon basin, Brazil; and Sturisoma defranciscoi, new species, from the Putumayo and Solimões rivers, upper Amazon basin, Colombia, and Brazil. Sturisoma robustum is confirmed as synonym of S. barbatum, species registered along the Paraguay/Parana/La Plata River basin in Argentina, Brazil, and Paraguay. New records were found for S. nigrirostrum as present in the upper Amazon basin, in the Yavari River, Brazil, in addition to its already known locality, the Ucayali River, Peru. The distribution of the type species of the genus S. rostratum is limited to the lower portion of the Amazon basin in the Araguaia, Maranhão, Mearim, Tapajós, and Tocantins rivers and its affluents, Brazil, in contrast to the assumed widespread distribution across the main basins of South America, as previously proposed for the species; the Mearim River is a new record for the species. Updated diagnoses and descriptions are offered for species of Sturisoma, in addition to distribution maps and an identification key for the species.
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Affiliation(s)
- Alejandro Londoño-Burbano
- Departamento de Vertebrados-Setor de Ictiologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil
| | - Marcelo R Britto
- Departamento de Vertebrados-Setor de Ictiologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil
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Gasparelli CHC, Marceliano-Alves MFV, Bastos LF, Lopes RT, Limoeiro AGDS, Nascimento WM, Dos Santos LMH, Boukpessi T, Soares ADJ, Frozoni M. Analysis of the penetration of NaOCl 5.25% into dentinal tubules using different irrigation protocols: An ex vivo study. AUST ENDOD J 2024; 50:140-147. [PMID: 38152976 DOI: 10.1111/aej.12824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/29/2023]
Abstract
The objective of the study was to investigate the 5.25% sodium hypochlorite (NaOCl) penetration into the dentinal tubules after different irrigation methods. Seventy canines were stained with 1% crystal violet and divided into groups (n = 20): GEC-EasyClean; GPUI-E1 Irrisonic ultrasonic insert; GXP-XP-Endo finisher; GPC-conventional irrigation and GNC-stained tooth without irrigation. Axial sections (16×) were assessed and irrigant penetration was quantified as a bleaching halo on the surface of the apical, middle and coronal third. In the apical third, GPUI promoted greater NaOCl penetration (p < 0.05). GXP was better than GEC (p < 0.05), as was GPC (p > 0.05). The GPUI and GXP groups were similar in the middle and coronal third (p > 0.05). GPUI and GXP showed better results than GEC (p < 0.05). GPUI was more effective in the apical third and like GXP in the cervical and middle third.
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Affiliation(s)
| | - Marília Fagury Videira Marceliano-Alves
- Department of Dental Research and Endodontics, Iguaçu University, Nova Iguaçu, Brazil
- Laboratory of Orofacial Pathologies, Imaging and Biotherapies, School of Dentistry, Laboratoire d'Excellence INFLAMEX, Université Paris Cité, URP 2496, Montrouge, France
- Department of Oral Health Sciences, BIOMAT - Biomaterials Research group & UZ Leuven (University Hospitals Leuven), KU Leuven (University of Leuven), Leuven, Belgium
| | - Luan Ferreira Bastos
- Nuclear Instrumentation Department, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Ricardo Tadeu Lopes
- Nuclear Instrumentation Department, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | | | - Wayne Martins Nascimento
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
| | | | - Tchilalo Boukpessi
- Laboratory of Orofacial Pathologies, Imaging and Biotherapies, School of Dentistry, Laboratoire d'Excellence INFLAMEX, Université Paris Cité, URP 2496, Montrouge, France
- Pitié Salpétrière Hospital Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Adriana de Jesus Soares
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, São Paulo, Brazil
| | - Marcos Frozoni
- Department of Endodontics, São Leopoldo Mandic Dental Research Center, Campinas, São Paulo, Brazil
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33
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Nicolau-Neto P, Peryassú BC, de Carvalho FN, Souza-Santos PT, Valverde P, Nascimento CM, Costa I, Dias FL, Pinto LFR. ALCAM is a biomarker of tumor aggressiveness and worse prognosis in glottic laryngeal squamous cell carcinoma. Head Neck 2024; 46:785-796. [PMID: 38196304 DOI: 10.1002/hed.27635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 12/01/2023] [Accepted: 12/24/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Laryngeal squamous cell carcinoma (LSCC) is the second most frequent head and neck tumor. Prognosis of patients with LSCC has not improved in recent decades, showing a need for the identification of prognostic biomarkers and new therapeutic targets. Recently, we showed that ALCAM overexpression was associated with glottic LSCC prognosis. OBJECTIVES AND METHODS Aiming to validate the prognostic value of ALCAM, we evaluate the ALCAM protein levels by immunohistochemistry in 263 glottic LSCC surgically treated with neck dissection. RESULTS ALCAM was expressed in 48.7% and overexpressed in 36.5% of glottic LSCC samples. ALCAM overexpression was associated with lymph node metastasis (p = 0.030), lymphovascular involvement (p = 0.0002), high-grade tumors (p = 0.025), and tumor relapse (p = 0.043). Multivariate survival analyses showed an overfitting between ALCAM overexpression and lymph node metastasis as a prognostic variable. CONCLUSIONS High ALCAM expression was associated with an aggressive glottic LSCC profile.
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Affiliation(s)
- Pedro Nicolau-Neto
- Programa de Carcinogênese Molecular, Instituto Nacional de Câncer-INCA, Rio de Janeiro, Brazil
| | | | | | | | - Priscila Valverde
- Divisão de Patologia, Instituto Nacional de Câncer-INCA, Rio de Janeiro, Brazil
| | | | - Izabella Costa
- Seção de Cirurgia de Cabeça e Pescoço, Instituto Nacional de Câncer-INCA, Rio de Janeiro, Brazil
| | - Fernando L Dias
- Seção de Cirurgia de Cabeça e Pescoço, Instituto Nacional de Câncer-INCA, Rio de Janeiro, Brazil
| | - Luis Felipe Ribeiro Pinto
- Programa de Carcinogênese Molecular, Instituto Nacional de Câncer-INCA, Rio de Janeiro, Brazil
- Departamento de Bioquímica, Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
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34
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Pereira RC, Vieira Júnior JOL, Barcelos JVPL, Peçanha LS, França TA, Mendonça LVP, da Silva WR, Samuels RI, Silva GA. The stingless bee Trigona spinipes (Hymenoptera: Apidae) is at risk from a range of insecticides via direct ingestion and trophallactic exchanges. Pest Manag Sci 2024; 80:2188-2198. [PMID: 38158650 DOI: 10.1002/ps.7956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 12/04/2023] [Accepted: 12/30/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND The stingless bee, Trigona spinipes, is an important pollinator of numerous native and cultivated plants. Trigona spinipes populations can be negatively impacted by insecticides commonly used for pest control in crops. However, this species has been neglected in toxicological studies. Here we observed the effects of seven insecticides on the survival of bees that had fed directly on insecticide-contaminated food sources or received insecticides via trophallactic exchanges between nestmates. The effects of insecticides on flight behavior were also determined for the compounds considered to be of low toxicity. RESULTS Imidacloprid, spinosad and malathion were categorized as highly toxic to T. spinipes, whereas lambda-cyhalothrin, methomyl and chlorfenapyr were of medium to low toxicity and interfered with two aspects of flight behavior evaluated here. Chlorantraniliprole was the only insecticide tested here that had no significant effect on T. spinipes survival, although it did interfere with one aspect of flight capacity. A single bee that had ingested malathion, spinosad or imidacloprid, could contaminate three, four and nineteen other bees, respectively via trophallaxis, resulting in the death of the recipients. CONCLUSION This is the first study to evaluate the ecotoxicology of a range of insecticides that not only negatively affected T. spinipes survival, but also interfered with flight capacity, a very important aspect of pollination behavior. The toxicity of the insecticides was observed following direct ingestion and also via trophallactic exchanges between nestmates, highlighting the possibility of lethal effects of these insecticides spreading throughout the colony, reducing the survival of non-foraging individuals. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Renata Cunha Pereira
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - José Olívio Lopes Vieira Júnior
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | | | - Ludimila Simões Peçanha
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Thalles Alves França
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Laís Viana Paes Mendonça
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Wanderson Rosa da Silva
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Richard Ian Samuels
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
| | - Gerson Adriano Silva
- Laboratory of Entomology and Plant Pathology, Universidade Estadual Norte Fluminense Darcy Ribeiro (UENF), Rio de Janeiro, Brazil
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Lavrado NC, Salles GF, Cardoso CRL, de França PHC, Melo MFDGG, Leite NC, Villela-Nogueira CA. Impact of PNPLA3 and TM6SF2 polymorphisms on the prognosis of patients with MASLD and type 2 diabetes mellitus. Liver Int 2024; 44:1042-1050. [PMID: 38293718 DOI: 10.1111/liv.15845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/28/2023] [Accepted: 01/05/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND/AIMS Longitudinal studies assessing the impact of genetic polymorphisms on outcomes in patients with Type 2 Diabetes Mellitus (T2DM) and Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) are scarce. This study aimed to evaluate the effect of PNPLA3 and TM6SF2 risk alleles on hepatic and extrahepatic outcomes in T2DM-MASLD individuals. METHODS Patients' polymorphisms were analysed as follows: PNPLA3 CC, CG and GG; TM6SF2 CC and CT + TT; combined comparing no mutant allele, one allele G or T or ≥2 alleles G or T. Hierarchical models were built to assess associations between polymorphisms and outcomes, independently of confounding factors. Multivariate logistic regression was used for cirrhosis and its complications and extrahepatic cancer, and Cox regression for cardiovascular events (CVEs) and all-cause mortality. RESULTS In total, 407 T2DM-MASLD patients (62.1 ± 10.5 years, 67.6% women) were followed for 11 (6-13) years. Having at least one G or T allele independently increased the risk of cirrhosis in the separate analysis of PNPLA3 and TM6SF2. Combined polymorphism analysis demonstrated an even higher risk of cirrhosis if two or more risk alleles were present (OR 18.48; 95% CI 6.15-55.58; p < .001). Regarding cirrhosis complications, the risk was higher in PNPLA3 GG and TM6SF2 CT + TT, also with an even higher risk when two or more risk alleles were present in the combined evaluation (OR 27.20; 95% CI 5.26-140.62; p < .001). There were no associations with CVEs or mortality outcomes. CONCLUSION In T2DM, PNPLA3 and TM6SF2 polymorphisms, individually and additively, impact MASLD severity, with an increased risk of cirrhosis and its complications.
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Affiliation(s)
- Natália Coelho Lavrado
- Internal Medicine Post Graduate Program, Medical School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gil Fernando Salles
- Department of Internal Medicine, Medical School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Nathalie Carvalho Leite
- Division of Hepatology, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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De-Deus G, Arashiro FN, Souza EM, Silva EJNL, Guimarães TDM, Maciel ACDC, Oliveira DDS, Belladonna FG, Lopes RT, Versiani MA. The impact of long-term storage conditions on the development of experimental dentinal microcracks. AUST ENDOD J 2024; 50:60-68. [PMID: 37876340 DOI: 10.1111/aej.12806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/27/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023]
Abstract
This study evaluated the impact of long-term storage conditions (medium and time) on the development of experimental dentinal microcracks through micro-computed tomography. Sixty freshly extracted premolars were stored in formalin, water, or dry conditions (n = 20) and scanned after 72 h, 30 days, 6 months and 3 years of extraction. The effect of the storage medium and time on the occurrence of dentinal defects was statistically evaluated. A total of 211 000 images were screened revealing the existence of 11 519 slices with dentinal defects. Dry conditions significantly contributed to the development of new defects in all time points. During the 3-year follow-up period, no new defects were detected in the teeth that were stored in water and, in a single tooth, in the formalin group, after 6 months of storage.
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Affiliation(s)
- Gustavo De-Deus
- Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
| | - Fabio Nakao Arashiro
- Department of Endodontics, School of Dentistry Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Erick Miranda Souza
- Department of Dentistry II, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Emmanuel João Nogueira Leal Silva
- Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
- Department of Endodontics, Grande Rio University, Duque de Caxias, Rio de Janeiro, Brazil
| | | | | | | | | | - Ricardo Tadeu Lopes
- Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marco Aurélio Versiani
- Dental Specialty Center, Brazilian Military Police, Belo Horizonte, Minas Gerais, Brazil
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Salles BM, Fadel JV, Mograbi DC. Moderate similarity leads to empathic concern, but high similarity can also induce personal distress towards others' pain. Psych J 2024; 13:322-334. [PMID: 38105597 PMCID: PMC10990819 DOI: 10.1002/pchj.720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
Empathic concern and personal distress are common vicarious emotional responses that arise when witnessing someone else's pain. However, the influence of perceived similarity on these responses remains unclear. In this study, we examined how perceived similarity with an injured target impacts vicarious emotional responses. A total of 87 participants watched a video of an athlete in pain preceded by a clip describing the athlete's trajectory, which indicated either high, moderate, or low similarity to the participants. Emotional self-reports, facial expressions, gaze behavior, and pupil diameter were measured as indicators of the participants' emotional responses. Participants in the moderate- and high-similarity groups exhibited greater empathic concern, as evidenced by their display of more sadness compared with those in the low-similarity group. Furthermore, those in the moderate-similarity group exhibited less avoidance by displaying reduced disgust, indicating lower personal distress compared with those in the low-similarity condition. Nevertheless, the high-similarity group displayed just as much disgust as the low-similarity group. These findings suggest that perceived similarity enhances empathic concern to others' suffering, but that high similarity can also lead to personal distress. Future studies on empathy should explore distinct vicarious states using multimodal measurements to further advance our understanding of these processes.
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Affiliation(s)
- Bruno M. Salles
- Department of PsychologyPontifical Catholic University of Rio de Janeiro (PUC‐Rio)Rio de JaneiroBrazil
| | - João V. Fadel
- Department of PsychologyPontifical Catholic University of Rio de Janeiro (PUC‐Rio)Rio de JaneiroBrazil
| | - Daniel C. Mograbi
- Department of PsychologyPontifical Catholic University of Rio de Janeiro (PUC‐Rio)Rio de JaneiroBrazil
- Institute of Psychiatry, Psychology and NeuroscienceKing's College LondonLondonUK
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Kaiuca JFL, Martinelli AG, Schultz CL, Fonseca PHM, Tavares WC, Soares MB. Weighing in on miniaturization: New body mass estimates for Triassic eucynodonts and analyses of body size evolution during the cynodont-mammal transition. Anat Rec (Hoboken) 2024; 307:1594-1612. [PMID: 38229416 DOI: 10.1002/ar.25377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/18/2024]
Abstract
Body size influences most aspects of an animal's biology, consequently, evolutionary diversification is often accompanied by differentiation of body sizes within a lineage. It is accepted that miniaturization, or the evolution of extremely small body sizes, played a key role in the origin and early evolution of different mammalian characters in non-mammaliaform cynodonts. However, while there are multiple studies on the biomechanical, behavioral, and physiological consequences of smaller sizes, few explore the evolutionary processes that lead to them. Here, we use body mass as a universal size measurement in phylogenetic comparative analyses to explore aspects of body size evolution in Cynodontia, focusing on the cynodont-mammal transition, and test the miniaturization hypothesis for the origin of Mammaliaformes. We estimated the body masses of 29 species, ranging from Theriocephalia to Mammaliaformes, providing the largest collection of Triassic cynodont body mass estimates that we know of, and used these estimates in analyses of disparity through time and RRphylo . Unexpectedly, our results did not support the miniaturization hypothesis. Even though cynodont body size disparity fell during the Late Triassic, and remained lower than expected under a purely Brownian motion model of evolution up until the Early Jurassic, we found that rates of body size evolution were significantly lower in prozostrodontians leading to the first Mammaliaformes than in other lineages. Evolution rates were higher in medium and large-sized taxa, indicating that size was changing more rapidly in those lineages and that small sizes were probably a persistent plesiomorphic character-state in Cynodontia.
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Affiliation(s)
- João Felipe Leal Kaiuca
- Programa de Pós-Graduação em Biodiversidade e Biologia Evolutiva, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Instituto de Biologia, Interbloco B/C, CCS, Rio de Janeiro, Brazil
- Núcleo Multidisciplinar de Pesquisa em Biologia, Campus UFRJ Duque de Caxias Professor Geraldo Cidade, Universidade Federal do Rio de Janeiro, Duque de Caxias, Brazil
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Agustín Guillermo Martinelli
- Sección Paleontología de Vertebrados, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"-CONICET, Buenos Aires, Argentina
| | - Cesar Leandro Schultz
- Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Pedro Henrique Morais Fonseca
- Programa de Pós-Graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - William Corrêa Tavares
- Programa de Pós-Graduação em Biodiversidade e Biologia Evolutiva, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Instituto de Biologia, Interbloco B/C, CCS, Rio de Janeiro, Brazil
- Núcleo Multidisciplinar de Pesquisa em Biologia, Campus UFRJ Duque de Caxias Professor Geraldo Cidade, Universidade Federal do Rio de Janeiro, Duque de Caxias, Brazil
| | - Marina Bento Soares
- Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Kerber L, Roese-Miron L, Bubadué JM, Martinelli AG. Endocranial anatomy of the early prozostrodonts (Eucynodontia: Probainognathia) and the neurosensory evolution in mammal forerunners. Anat Rec (Hoboken) 2024; 307:1442-1473. [PMID: 37017195 DOI: 10.1002/ar.25215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/09/2023] [Accepted: 03/09/2023] [Indexed: 04/06/2023]
Abstract
Prozostrodon brasiliensis and Therioherpeton cargnini are non-mammaliaform cynodonts that lived ~233 million years ago (late Carnian, Late Triassic) in western Gondwana. They represent some of the earliest divergent members of the clade Prozostrodontia, which includes "tritheledontids", tritylodontids, "brasilodontids", and mammaliaforms (including Mammalia as crown group). Here, we studied the endocranial anatomy (cranial endocast, nerves, vessels, ducts, ear region, and nasal cavity) of these two species. Our findings suggest that during the Carnian, early prozostrodonts had a brain with well-developed olfactory bulbs, expanded cerebral hemispheres divided by the interhemispheric sulcus, and absence of an unossified zone and pineal body. The morphology of the maxillary canal represents the necessary condition for the presence of facial vibrissae. A slight decrease in encephalization is observed at the origin of the clade Prozostrodontia. This new anatomical information provides evidence for the evolution of endocranial traits of the first prozotrodonts, a Late Triassic lineage that culminated in the origin of mammals.
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Affiliation(s)
- Leonardo Kerber
- Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
- Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia, Universidade Federal de Santa Maria (CAPPA/UFSM), São João do Polêsine, RS, Brazil
| | - Lívia Roese-Miron
- Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
- Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia, Universidade Federal de Santa Maria (CAPPA/UFSM), São João do Polêsine, RS, Brazil
| | - Jamile M Bubadué
- Laboratorio de Ciências Ambientais, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Brazil
| | - Agustín G Martinelli
- Sección Paleontologia de Vertebrados, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Argentina
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Magno MB, Jural LA, Ribeiro-Lages MB, Silva K, Coqueiro RS, Pithon MM, Maia LC. Development and psychometric properties of a questionnaire about knowledge of lay people about traumatic dental injury. Dent Traumatol 2024; 40:171-177. [PMID: 37817485 DOI: 10.1111/edt.12892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/26/2023] [Accepted: 09/12/2023] [Indexed: 10/12/2023]
Abstract
BACKGROUND/AIMS The level of knowledge about traumatic dental injuries (TDI) of lay people from a national point of view has never been studied and there is currently a lack of validated research instruments on this issue. The present study aims to develop and validate a questionnaire (TDI-Q) to assess the knowledge of lay people about TDI, including participants from the five regions of Brazil. MATERIAL AND METHODS TDI-Q was drafted, in Brazilian Portuguese, based on the recommendations of the International Association of Dental Traumatology (IADT). Before its application, TDI-Q was evaluated by dentists, lay people, linguists, and psychometrists. The questionnaire was applied to measure temporal stability at two distinct times, with an interval of 15-20 days between the two applications: test (n = 110) and retest (n = 50). The presence of floor and ceiling effects were investigated by analyzing the frequency of responses of the questionnaire; convergent construct validity was tested through Spearman's correlation; the Mann-Whitney test was applied to discriminant construct validity. Temporal stability and internal consistency were evaluated through intraclass correlation coefficient and Cronbach's alpha, respectively. RESULTS The floor and ceiling effects were not observed (0.9% and 2.7%, respectively); convergent validity analysis indicated a positive and strong correlation (r = 0.50; p < .001). Significant discriminant construct validity (p < .05) was observed. Satisfactory internal consistency (α = 0.7) and temporal stability (ICC = 0.82, p < .001) were also achieved. CONCLUSION TDI-Q proved to have good psychometric properties and to be a reliable tool for evaluating the knowledge of lay people regarding TDI in the Brazilian population.
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Affiliation(s)
- Marcela Baraúna Magno
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Veiga de Almeida University, Rio de Janeiro, Brazil
| | - Lucas Alves Jural
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana Batista Ribeiro-Lages
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kenderson Silva
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Matheus Melo Pithon
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Southwest Bahia State University UESB, Jequié, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Perazzo H, Gonçalves JL, Cardoso SW, Grinsztejn B, Veloso VG, Luz PM. Pathways to Poor Adherence to Antiretroviral Therapy Among People Living with HIV: The Role of Food Insecurity and Alcohol Misuse. AIDS Behav 2024; 28:1173-1185. [PMID: 37523050 DOI: 10.1007/s10461-023-04141-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2023] [Indexed: 08/01/2023]
Abstract
Daily adherence to antiretroviral therapy (ART) increases the length and quality of life of people living with HIV (PLHIV). We explored whether socioeconomic status directly impacts ART adherence and whether part of the effect is mediated by pathways through alcohol misuse or food insecurity. A cross-sectional study was conducted in Rio de Janeiro/Brazil (November/2019 to March/2020) with PLHIV aged ≥ 18 years. Validated instruments were used to measure alcohol use, food insecurity, and ART adherence. Using structural equation modeling we assessed the direct and indirect effects of variables on ART adherence. Participants reported significant challenges: hunger: 12%, alcohol use: 64%, and missing ART doses: 24%. Results showed that lower socioeconomic status increased poor adherence and that this effect was mediated through higher food insecurity. Alcohol misuse also increased poor adherence through a strong direct effect. Providing socio-economic support coupled with interventions to mitigate alcohol's harmful impact can aid HIV care.
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Affiliation(s)
- Hugo Perazzo
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil
| | - Juliana L Gonçalves
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil
| | - Sandra W Cardoso
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil
| | - Beatriz Grinsztejn
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil
| | - Valdilea G Veloso
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil
| | - Paula M Luz
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil.
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Mastrantonio BM, Lacerda MB, de Farias BDM, Pretto FA, Rezende LDO, Desojo JB, Schultz CL. Postcranial anatomy of Prestosuchus chiniquensis (Archosauria: Loricata) from the Triassic of Brazil. Anat Rec (Hoboken) 2024; 307:925-956. [PMID: 38299218 DOI: 10.1002/ar.25383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/28/2023] [Accepted: 12/28/2023] [Indexed: 02/02/2024]
Abstract
Prestosuchus chiniquensis is the best represented pseudosuchian archosaur from the Pinheiros-Chiniquá Sequence, Middle-Late Triassic (Ladinian/Carnian) of the Santa Maria Supersequence, Southern Brazil. Several incomplete specimens attributed to this species have been described, but the morphology of the postcranial skeleton of P. chiniquensis is poorly known. In this contribution we present the postcranial material of the UFRGS-PV-0629-T specimen, concluding its description, as its skull and endocast have already been described. Additionally, histological data provided new information on the poorly known ontogenetic series of P. chiniquensis, and on its growth patterns suggesting a longer period of slow growth when compared to other basal Loricata species. A phylogenetic analysis placed UFRGS-PV-0629-T in a group composed by the lectotype, paralectotype, and other described P. chiniquensis specimens, further corroborating our taxonomic hypothesis, that specimens of basal Loricata collected in Brazil are closely related to each other. Due to the association of characters found in the phylogenetic analysis, the specimen UFRGS-PV-0629-T is attributed as the most complete material ever found for P. chiniquensis. As such, it is clear that the material presented here provides important new information on P. chiniquensis. Based on the results presented here, we revised the diagnosis for P. chiniquensis. However, it also evidences the need for new discoveries and studies of other specimens seeking to understand this and other closely related species, which were important components of worldwide trophic webs of the Triassic biotas.
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Affiliation(s)
- Bianca Martins Mastrantonio
- Programa de Pós-Graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Marcel Baêta Lacerda
- Programa de Pós-Graduação em Zoologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Brodsky Dantas Macedo de Farias
- Programa de Pós-Graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Flávio Augusto Pretto
- Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia (CAPPA), Programa de Pós-Graduação em Biodiversidade Animal (PPGBA), Universidade Federal de Santa Maria (UFSM), São João do Polêsine, Brazil
| | - Letícia de Oliveira Rezende
- Centro de Apoio à Pesquisa Paleontológica da Quarta Colônia (CAPPA), Programa de Pós-Graduação em Biodiversidade Animal (PPGBA), Universidade Federal de Santa Maria (UFSM), São João do Polêsine, Brazil
| | - Julia Brenda Desojo
- CONICET-Division Paleontologia Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina
| | - Cesar Leandro Schultz
- Programa de Pós-Graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Floriano CFB, Bispo PDC, Moreira FFF. A synopsis of the genus Cylindrostethus Fieber 1861 (Insecta: Hemiptera: Gerridae). Neotrop Entomol 2024; 53:254-276. [PMID: 38575843 DOI: 10.1007/s13744-023-01121-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/13/2023] [Indexed: 04/06/2024]
Abstract
Cylindrostethus Fieber, 1861 is one of the most striking genera of water striders (Insecta: Hemiptera: Gerridae) and has Pantropical distribution. Members of this group can be recognized by the very long, cylindrical body; the short antennomere IV; the short labium not reaching the mesosternum; and by characteristics of the abdomen of males and females. Although Neotropical representatives of the genus have been revised, there are pending taxonomic issues related to this fauna, and that of the Eastern Hemisphere has been barely studied in recent years. Here, we present a short note about the authorship of Cylindrostethus, an updated key to all species of the genus, a new synonymy, and the description of a previously unknown macropterous male of C. hungerfordi Drake and Harris.
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Affiliation(s)
| | - Pitágoras Da Conceição Bispo
- Departamento de Ciências Biológicas, Universidade Estadual Paulista Júlio de Mesquita Filho, Assis, São Paulo, Brazil
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Chagas LDS, Serfaty CA. The Influence of Microglia on Neuroplasticity and Long-Term Cognitive Sequelae in Long COVID: Impacts on Brain Development and Beyond. Int J Mol Sci 2024; 25:3819. [PMID: 38612629 PMCID: PMC11011312 DOI: 10.3390/ijms25073819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Microglial cells, the immune cells of the central nervous system, are key elements regulating brain development and brain health. These cells are fully responsive to stressors, microenvironmental alterations and are actively involved in the construction of neural circuits in children and the ability to undergo full experience-dependent plasticity in adults. Since neuroinflammation is a known key element in the pathogenesis of COVID-19, one might expect the dysregulation of microglial function to severely impact both functional and structural plasticity, leading to the cognitive sequelae that appear in the pathogenesis of Long COVID. Therefore, understanding this complex scenario is mandatory for establishing the possible molecular mechanisms related to these symptoms. In the present review, we will discuss Long COVID and its association with reduced levels of BDNF, altered crosstalk between circulating immune cells and microglia, increased levels of inflammasomes, cytokines and chemokines, as well as the alterations in signaling pathways that impact neural synaptic remodeling and plasticity, such as fractalkines, the complement system, the expression of SIRPα and CD47 molecules and altered matrix remodeling. Together, these complex mechanisms may help us understand consequences of Long COVID for brain development and its association with altered brain plasticity, impacting learning disabilities, neurodevelopmental disorders, as well as cognitive decline in adults.
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Affiliation(s)
- Luana da Silva Chagas
- Program of Neuroscience, Department of Neurobiology, Institute of Biology, Federal Fluminense University, Niterói 24210-201, Rio de Janeiro, Brazil;
- National Institute of Science and Technology on Neuroimmunomodulation—INCT-NIM, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21041-250, Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21041-250, Rio de Janeiro, Brazil
| | - Claudio Alberto Serfaty
- Program of Neuroscience, Department of Neurobiology, Institute of Biology, Federal Fluminense University, Niterói 24210-201, Rio de Janeiro, Brazil;
- National Institute of Science and Technology on Neuroimmunomodulation—INCT-NIM, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21041-250, Rio de Janeiro, Brazil
- Rio de Janeiro Research Network on Neuroinflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21041-250, Rio de Janeiro, Brazil
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Costa VAB, Midgley AW, Baumgart JK, Carroll S, Astorino TA, Schaun GZ, Fonseca GF, Cunha FA. Confirming the attainment of maximal oxygen uptake within special and clinical groups: A systematic review and meta-analysis of cardiopulmonary exercise test and verification phase protocols. PLoS One 2024; 19:e0299563. [PMID: 38547136 PMCID: PMC10977812 DOI: 10.1371/journal.pone.0299563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 02/13/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND AND AIM A plateau in oxygen uptake ([Formula: see text]) during an incremental cardiopulmonary exercise test (CPET) to volitional exhaustion appears less likely to occur in special and clinical populations. Secondary maximal oxygen uptake ([Formula: see text]) criteria have been shown to commonly underestimate the actual [Formula: see text]. The verification phase protocol might determine the occurrence of 'true' [Formula: see text] in these populations. The primary aim of the current study was to systematically review and provide a meta-analysis on the suitability of the verification phase for confirming 'true' [Formula: see text] in special and clinical groups. Secondary aims were to explore the applicability of the verification phase according to specific participant characteristics and investigate which test protocols and procedures minimise the differences between the highest [Formula: see text] values attained in the CPET and verification phase. METHODS Electronic databases (PubMed, Web of Science, SPORTDiscus, Scopus, and EMBASE) were searched using specific search strategies and relevant data were extracted from primary studies. Studies meeting inclusion criteria were systematically reviewed. Meta-analysis techniques were applied to quantify weighted mean differences (standard deviations) in peak [Formula: see text] from a CPET and a verification phase within study groups using random-effects models. Subgroup analyses investigated the differences in [Formula: see text] according to individual characteristics and test protocols. The methodological quality of the included primary studies was assessed using a modified Downs and Black checklist to obtain a level of evidence. Participant-level [Formula: see text] data were analysed according to the threshold criteria reported by the studies or the inherent measurement error of the metabolic analysers and displayed as Bland-Altman plots. RESULTS Forty-three studies were included in the systematic review, whilst 30 presented quantitative information for meta-analysis. Within the 30 studies, the highest mean [Formula: see text] values attained in the CPET and verification phase protocols were similar (mean difference = -0.00 [95% confidence intervals, CI = -0.03 to 0.03] L·min-1, p = 0.87; level of evidence, LoE: strong). The specific clinical groups with sufficient primary studies to be meta-analysed showed a similar [Formula: see text] between the CPET and verification phase (p > 0.05, LoE: limited to strong). Across all 30 studies, [Formula: see text] was not affected by differences in test protocols (p > 0.05; LoE: moderate to strong). Only 23 (53.5%) of the 43 reviewed studies reported how many participants achieved a lower, equal, or higher [Formula: see text] value in the verification phase versus the CPET or reported or supplied participant-level [Formula: see text] data for this information to be obtained. The percentage of participants that achieved a lower, equal, or higher [Formula: see text] value in the verification phase was highly variable across studies (e.g. the percentage that achieved a higher [Formula: see text] in the verification phase ranged from 0% to 88.9%). CONCLUSION Group-level verification phase data appear useful for confirming a specific CPET protocol likely elicited [Formula: see text], or a reproducible [Formula: see text], for a given special or clinical group. Participant-level data might be useful for confirming whether specific participants have likely elicited [Formula: see text], or a reproducible [Formula: see text], however, more research reporting participant-level data is required before evidence-based guidelines can be given. TRIAL REGISTRATION PROSPERO (CRD42021247658) https://www.crd.york.ac.uk/prospero.
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Affiliation(s)
- Victor A. B. Costa
- Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil
- Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, Brazil
| | - Adrian W. Midgley
- Department of Sport and Physical Activity, Edge Hill University, Ormskirk, England, United Kingdom
| | - Julia K. Baumgart
- Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Norway, University of Science and Technology, Trondheim, Norway
| | - Sean Carroll
- School of Sport, Exercise and Rehabilitation Sciences, University of Hull, Hull, England, United Kingdom
| | - Todd A. Astorino
- Department of Kinesiology, California State University, San Marcos, CA, United States of America
| | - Gustavo Z. Schaun
- Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria
| | - Guilherme F. Fonseca
- Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil
- Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, Brazil
| | - Felipe A. Cunha
- Graduate Program in Exercise Science and Sports, University of Rio de Janeiro State, Rio de Janeiro, Brazil
- Laboratory of Physical Activity and Health Promotion, University of Rio de Janeiro State, Rio de Janeiro, Brazil
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Present C, Girão RD, Lin C, Caljon G, Van Calenbergh S, Moreira O, Ruivo LADS, Batista MM, Azevedo R, Batista DDGJ, Soeiro MDNC. N 6-Methyltubercidin gives sterile cure in a cutaneous Leishmania amazonensis mouse model. Parasitology 2024:1-29. [PMID: 38533610 DOI: 10.1017/s0031182024000362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Affiliation(s)
- Cassandra Present
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium
| | - Roberson Donola Girão
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Cai Lin
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000, Gent, Belgium
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, B-2610, Wilrijk, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000, Gent, Belgium
| | - Otacilio Moreira
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Leonardo Alexandre de Souza Ruivo
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Marcos Meuser Batista
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Raquel Azevedo
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Denise da Gama Jaen Batista
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
| | - Maria de Nazaré Correia Soeiro
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360, Rio de Janeiro, Brazil
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Brigatti E, Ríos-Uzeda B, Vieira MV. Exploring the interplay between small and large scales movements in a neotropical small mammal. Mov Ecol 2024; 12:23. [PMID: 38528635 DOI: 10.1186/s40462-024-00465-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/12/2024] [Indexed: 03/27/2024]
Abstract
We record and analyze the movement patterns of the marsupial Didelphis aurita at different temporal scales. Animals trajectories are collected at a daily scale by using spool-and-line techniques and, with the help of radio-tracking devices, animals traveled distances are estimated at intervals of weeks. Small-scale movements are well described by truncated Lévy flight, while large-scale movements produce a distribution of distances which is compatible with a Brownian motion. A model of the movement behavior of these animals, based on a truncated Lévy flight calibrated on the small scale data, converges towards a Brownian behavior after a short time interval of the order of 1 week. These results show that whether Lévy flight or Brownian motion behaviors apply, will depend on the scale of aggregation of the animals paths. In this specific case, as the effect of the rude truncation present in the daily data generates a fast convergence towards Brownian behaviors, Lévy flights become of scarce interest for describing the local dispersion properties of these animals, which result well approximated by a normal diffusion process and not a fast, anomalous one. Interestingly, we are able to describe two movement phases as the consequence of a statistical effect generated by aggregation, without the necessity of introducing ecological constraints or mechanisms operating at different spatio-temporal scales. This result is of general interest, as it can be a key element for describing movement phenomenology at distinct spatio-temporal scales across different taxa and in a variety of systems.
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Affiliation(s)
- E Brigatti
- Instituto de Física, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Cidade Universitária, Rio de Janeiro, RJ, 21941-972, Brazil.
| | - B Ríos-Uzeda
- Laboratório de Vertebrados, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68020, Rio de Janeiro, RJ, 21941-590, Brazil
- Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68020, Rio de Janeiro, RJ, 21941-902, Brazil
| | - M V Vieira
- Laboratório de Vertebrados, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68020, Rio de Janeiro, RJ, 21941-590, Brazil
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Nascimento PMC, Rodrigues Junior LF, Felix Mediano MF, Gonçalves da Silva V, Tura BR, Nogueira FCS, Domont G, Carvalho AB, de Carvalho ACC, Kasai-Brunswick TH, Mesquita CT, Junior HV, Rey HCV. Prevalence and impact of sarcopenia in individuals with heart failure with reduced ejection fraction (the SARC-HF study): A prospective observational study protocol. PLoS One 2024; 19:e0300918. [PMID: 38512827 PMCID: PMC10956824 DOI: 10.1371/journal.pone.0300918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 03/06/2024] [Indexed: 03/23/2024] Open
Abstract
Sarcopenia, a clinical syndrome primarily associated with reduced muscle mass in the elderly, has a negative impact on quality of life and survival. It can occur secondarily to other diseases such as heart failure (HF), a complex clinical syndrome with high morbidity and mortality. The simultaneous occurrence of these two conditions can worsen the prognosis of their carriers, especially in the most severe cases of HF, as in patients with reduced left ventricular ejection fraction (LVEF). However, due to the heterogeneous diagnostic criteria for sarcopenia, estimates of its prevalence present a wide variation, leading to new criteria having been recently proposed for its diagnosis, emphasizing muscle strength and function rather than skeletal muscle mass. The primary objective of this study is to evaluate the prevalence of sarcopenia and/or dynapenia in individuals with HF with reduced LVEF according to the most recent criteria, and compare the gene and protein expression of those patients with and without sarcopenia. The secondary objectives are to evaluate the association of sarcopenia and/or dynapenia with the risk of clinical events and death, quality of life, cardiorespiratory capacity, ventilatory efficiency, and respiratory muscle strength. The participants will answer questionnaires to evaluate sarcopenia and quality of life, and will undergo the following tests: handgrip strength, gait speed, dual-energy X-ray absorptiometry, respiratory muscle strength, cardiopulmonary exercise, as well as genomic and proteomic analysis, and dosage of N-terminal pro-B-type natriuretic peptide and growth differentiation factor-15. An association between sarcopenia and/or dynapenia with unfavorable clinical evolution is expected to be found, in addition to reduced quality of life, cardiorespiratory capacity, ventilatory efficiency, and respiratory muscle strength.
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Affiliation(s)
| | - Luiz Fernando Rodrigues Junior
- National Institute of Cardiology, Rio de Janeiro, Brazil
- Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | | | - Gilberto Domont
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana Bastos Carvalho
- National Institute of Cardiology, Rio de Janeiro, Brazil
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Taís Hanae Kasai-Brunswick
- National Institute of Cardiology, Rio de Janeiro, Brazil
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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da Silva HFO, de Oliveira Torchia DF, van Tol de Castro TA, de Abreu Lopes S, Cantarino RE, Tavares OCH, de Moura OVT, Rodrigues NF, Berbara RLL, Santos LA, García AC. Role of the molecular structure of humified organic matter in rice plant response to environmental lead pollution. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-32898-7. [PMID: 38507164 DOI: 10.1007/s11356-024-32898-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 03/09/2024] [Indexed: 03/22/2024]
Abstract
Humified organic matter has been shown to decrease Pb toxicity in plants. However, there are still gaps in our understanding of the mechanism by which this phenomenon occurs. In this study, we aimed to assess the ability of humic substances (HSs), humic acids (HAs), and fulvic acids (FAs) to enhance defense mechanisms in rice plants under lead (Pb)-stressed conditions. HS fractions were isolated from vermicompost using the chemical fractionation methodology established by the International Humic Substances Society. These fractions were characterized by solid-state NMR and FTIR. Chemometric analysis was used to compare humic structures and correlate them with bioactivity. Three treatments were tested to evaluate the protective effect of humic fractions on rice plants. The first experiment involved the application of humic fractions along with Pb. The second comprised pretreatment with humic fractions followed by subsequent exposure to Pb stress. The third experiment involved Pb stress and subsequent treatment with humic fractions. The root morphology and components of the antioxidative defense system were evaluated and quantified. The results showed that HS + Pb, HA + Pb, and FA + Pb treatment preserved root growth and reduced the levels of O2- and malondialdehyde (MDA) in the roots by up to 5% and 2%, respectively. Pretreatment of the plants with humic fractions promoted the maintenance of root growth and reduced the contents of O2-, H2O2, and MDA by up to 48%, 22%, and 20%, respectively. Combined application of humic fractions and Pb reduced the Pb content in plant tissues by up to 60%, while pretreatment reduced it by up to 80%. The protective capacity of humic fractions is related to the presence of peptides, lignin, and carbohydrate fragments in their molecular structures. These results suggest that products could be developed that can mitigate the adverse effects of heavy metals on agricultural crops.
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Affiliation(s)
- Hellen Fernanda Oliveira da Silva
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | | | - Tadeu Augusto van Tol de Castro
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Samuel de Abreu Lopes
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Raphaella Esterque Cantarino
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Orlando Carlos Huertas Tavares
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Octávio Vioratti Telles de Moura
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Natália Fernandes Rodrigues
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Ricardo Luiz Louro Berbara
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Leandro Azevedo Santos
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil
| | - Andrés Calderin García
- Laboratory of Soil Biological Chemistry, Department of Soils, Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica, RJ, Brazil.
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Morgado S, Fonseca É, Freitas F, Caldart R, Vicente AC. In-depth analysis of Klebsiella aerogenes resistome, virulome and plasmidome worldwide. Sci Rep 2024; 14:6538. [PMID: 38503805 PMCID: PMC10951357 DOI: 10.1038/s41598-024-57245-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/15/2024] [Indexed: 03/21/2024] Open
Abstract
Klebsiella aerogenes is an emergent pathogen associated with outbreaks of carbapenem-resistant strains. To date, studies focusing on K. aerogenes have been small-scale and/or geographically restricted. Here, we analyzed the epidemiology, resistome, virulome, and plasmidome of this species based on 561 genomes, spanning all continents. Furthermore, we sequenced four new strains from Brazil (mostly from the Amazon region). Dozens of STs occur worldwide, but the pandemic clones ST93 and ST4 have prevailed in several countries. Almost all genomes were clinical, however, most of them did not carry ESBL or carbapenemases, instead, they carried chromosomal alterations (omp36, ampD, ampG, ampR) associated with resistance to β-lactams. Integrons were also identified, presenting gene cassettes not yet reported in this species (blaIMP, blaVIM, blaGES). Considering the virulence loci, the yersiniabactin and colibactin operons were found in the ICEKp10 element, which is disseminated in genomes of several STs, as well as an incomplete salmochelin cluster. In contrast, the aerobactin hypervirulence trait was observed only in one ST432 genome. Plasmids were common, mainly from the ColRNAI replicon, with some carrying resistance genes (mcr, blaTEM, blaNDM, blaIMP, blaKPC, blaVIM) and virulence genes (EAST1, senB). Interestingly, 172 genomes of different STs presented putative plasmids containing the colicin gene.
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Affiliation(s)
- Sergio Morgado
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21040-360, Brazil.
| | - Érica Fonseca
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Fernanda Freitas
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21040-360, Brazil
| | - Raquel Caldart
- Centro de Ciências da Saúde, Universidade Federal de Roraima, Boa Vista, RR, 69300-000, Brazil
| | - Ana Carolina Vicente
- Laboratório de Genética Molecular de Microrganismos, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21040-360, Brazil
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