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Campanhon IB, de Aguiar PF, Bezerra FF, Soares MR, Torres AG. Human colostrum in vitro protein digestion: peptidomics by liquid chromatography-Orbitrap-high-resolution MS and prospection for bioactive peptides via bioinformatics. Br J Nutr 2024; 131:17-26. [PMID: 37485899 DOI: 10.1017/s0007114523001459] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Breast milk is known to contain bioactive peptides that are released during digestion, being a major source of bioactive peptides to the new-born, some of which act against invading pathogens. However, the formation of bioactive peptides during digestion of human colostrum remains largely uninvestigated. This study aimed to investigate the formation of peptides during simulated digestion of human colostrum from adult women and to prospect antimicrobial peptides. For this purpose, we used high-resolution MS to monitor the release of peptides during in vitro digestion. Bioinformatics was used for the prospection of antimicrobial activity of peptides. During simulated digestion (oral, gastric and duodenal phases), 2318 peptide sequences derived from 112 precursor proteins were identified. At the end of simulated digestion, casein-derived peptide sequences were the most frequently observed. Among precursors, some proteins were seen for the first time in this study. The resulting peptides were rich in proline, glutamine, valine and leucine residues, providing characteristic traits of antimicrobial peptides. From bioinformatics analysis, seven peptides showed potentially high antimicrobial activity towards bacteria, viruses and fungi, from which the latter was the most prominent predicted activity. Antimicrobial peptides released during digestion may provide a defence platform with controlled release for the new-born.
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Affiliation(s)
- Isabele Batista Campanhon
- Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Lipid Biochemistry and Lipidomics Laboratory and Laboratory of Food Science and Nutritional Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Fernandes de Aguiar
- Laboratory of Chemometrics (LABQUIM), Department of Analytical Chemistry, Institute of Chemistry, Universidade Federal Rio de Janeiro, Rio de Janeiro, Brazil
| | - Flávia Fioruci Bezerra
- Department of Basic and Experimental Nutrition, Nutrition Institute, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Márcia Regina Soares
- Department of Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Guedes Torres
- Lipid Biochemistry and Lipidomics Laboratory and Laboratory of Food Science and Nutritional Biochemistry, Institute of Chemistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Pereira WDP, Carvalheira L, Lopes JM, Aguiar PFD, Moreira RM, Oliveira ECD. Data reconciliation connected to guard bands to set specification limits related to risk assessment for radiopharmaceutical activity. Heliyon 2023; 9:e22992. [PMID: 38125475 PMCID: PMC10731080 DOI: 10.1016/j.heliyon.2023.e22992] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Radiopharmaceuticals have been used to diagnose several diseases, particularly because the procedure is non-invasive. However, it is important that the correct amount of radiopharmaceutical is used to avoid inaccurate diagnostic results and suboptimal therapeutic outcomes. The amount of the radiopharmaceutical is measured when produced (by the supplier) and a second time (by the receiver), before it's use. When measured at the receiver, the result is corrected for its normal radioactivity decay. Even then, it is possible that both measurements should be considered nominal different or even statistically different when compared through various statistical tools. This research combines two innovative techniques in the field of clinical metrology. The first technique is data reconciliation, which not only enhances measurement accuracy but also reduces measurement uncertainty. The second technique involves using uncertainty information to establish specification limits for compliance assessments. In this way, our proposal aimed to minimize the risk of making incorrect decisions regarding the conformity of the concentration of radiopharmaceutical activity, that is, rejecting an item or batch that is within specification or accepting an item or batch that is outside of specification. A spreadsheet, based on these metrology fundamentals, is available to help the user with the calculations, presenting numerical and graphical results for some common radioisotopes. Reliable specification limits can be calculated and used to determine if the radiopharmaceutical is in accordance with its proposed application.
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Affiliation(s)
| | - Luciana Carvalheira
- Argonauta Reactor Service, Nuclear Engineering Institute, R. Hélio de Almeida 75, 21941-614, Rio de Janeiro, Brazil
| | - José Marques Lopes
- Earth and Environmental Physics Department, Physics Institute, Federal University of Bahia, Campus Universitário de Ondina, 40210-340, Salvador, Brazil
- Postgraduate Program in Geochemistry, Petroleum and Environment (POSPETRO), Federal University of Bahia, Av. Milton Santos s/n°, Salvador, 40170-110, Brazil
| | - Paula Fernandes de Aguiar
- Federal University of Rio de Janeiro, Chemistry Institute, Avenida Athos da Silveira Ramos 149, 21941-909, Rio de Janeiro, Brazil
| | - Rosana Medeiros Moreira
- National Institute of Technology, Av. Venezuela 82 20081-312, Rio de Janeiro, Brazil
- National Institute of Metrology, Quality and Technology (INMETRO), Av. Nossa Senhora das Graças 50, 25250-020, Duque de Caxias, Brazil
| | - Elcio Cruz de Oliveira
- Postgraduate Programme in Metrology, Pontifical Catholic University of Rio de Janeiro, R. Marquês de São Vicente 225, 22451-900, Rio de Janeiro, Brazil
- Logistics, Operational Planning and Control, Measurement and Product Inventory Management, PETROBRAS S.A., Av. Henrique Valadares 28, 20231-030, Rio de Janeiro, Brazil
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Carvalheira L, Lopes JM, Fernandes de Aguiar P, Cruz de Oliveira E. Compliance assessment when radioactive discharges are close to exemption levels in nuclear medicine facilities. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Casanova LM, Rodrigues LM, de Aguiar PF, Tinoco LW. An NMR-Based Chemometric Strategy to Identify Leishmania donovani Nucleoside Hydrolase Inhibitors from the Brazilian Tree Ormosia arborea. J Nat Prod 2020; 83:243-254. [PMID: 31985226 DOI: 10.1021/acs.jnatprod.9b00622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nucleoside hydrolases are a strategic target for the development of drugs to treat leishmaniasis, a neglected disease that affects 700 thousand to one million people annually. The present study aimed to identify Leishmania donovani nucleoside hydrolase (LdNH) inhibitors from the leaves of Ormosia arborea, a tree endemic to Brazilian ecosystems, through a strategy based on 1H NMR analyses and chemometrics. The aqueous EtOH extract of O. arborea leaves inhibited LdNH activity by 95%. The extract was fractionated in triplicate (13 in each step, making a total of 39 fractions). Partial least squares discriminant analysis (PLS-DA) was used to correlate the 1H NMR spectra of the fractions with their LdNH inhibitory activity and thus to identify the spectral regions associated with the bioactivity. The strategy aimed at isolating the probable bioactive substances and led to two new A-type proanthocyanidins, linked to a p-coumaroyl unit (1 and 2), which appeared as noncompetitive inhibitors of LdNH (IC50: 28.2 ± 3.0 μM and 25.6 ± 4.1 μM, respectively). This study confirms the usefulness of the NMR-based chemometric methods to accelerate the discovery of drugs from natural products.
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Affiliation(s)
- Livia Marques Casanova
- Instituto de Pesquisas de Produtos Naturais, Centro de Ciências da Sau'de, Cidade Universita'ria , Universidade Federal do Rio de Janeiro , 21941-902 Rio de Janeiro , RJ , Brazil
| | - Luanna Monteiro Rodrigues
- Instituto de Pesquisas de Produtos Naturais, Centro de Ciências da Sau'de, Cidade Universita'ria , Universidade Federal do Rio de Janeiro , 21941-902 Rio de Janeiro , RJ , Brazil
| | - Paula Fernandes de Aguiar
- Departamento de Química Analítica, Instituto de Química, Centro de Ciências Matemáticas e da Natureza, Cidade Universitária , Universidade Federal do Rio de Janeiro , 21941-909 Rio de Janeiro , RJ , Brazil
| | - Luzineide Wanderley Tinoco
- Instituto de Pesquisas de Produtos Naturais, Centro de Ciências da Sau'de, Cidade Universita'ria , Universidade Federal do Rio de Janeiro , 21941-902 Rio de Janeiro , RJ , Brazil
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Dos Santos Nascimento LB, de Aguiar PF, Leal-Costa MV, Coutinho MAS, Borsodi MPG, Rossi-Bergmann B, Tavares ES, Costa SS. Optimization of Aqueous Extraction from Kalanchoe pinnata Leaves to Obtain the Highest Content of an Anti-inflammatory Flavonoid using a Response Surface Model. Phytochem Anal 2018; 29:308-315. [PMID: 29349835 DOI: 10.1002/pca.2744] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 11/25/2017] [Accepted: 12/03/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION The medicinal plant Kalanchoe pinnata is a phenolic-rich species used worldwide. The reports on its pharmacological uses have increased by 70% in the last 10 years. The leaves of this plant are the main source of an unusual quercetin-diglycosyl flavonoid (QAR, quercetin arabinopyranosyl rhamnopyranoside), which can be easily extracted using water. QAR possess a strong in vivo anti-inflammatory activity. OBJECTIVE To optimize the aqueous extraction of QAR from K. pinnata leaves using a three-level full factorial design. MATERIAL AND METHODS After a previous screening design, time (x1 ) and temperature (x2 ) were chosen as the two independent variables for optimization. Freeze-dried leaves were extracted with water (20% w/v), at 30°C, 40°C or 50°C for 5, 18 or 30 min. QAR content (determined by HPLC-DAD) and yield of extracts were analyzed. The optimized extracts were also evaluated for cytotoxicity. RESULTS The optimal heating times for extract yield and QAR content were similar in two-dimensional (2D) surface responses (between 12.8 and 30 min), but their optimal extraction temperatures were ranged between 40°C and 50°C for QAR content and 30°C and 38°C for extract yield. A compromise region for both parameters was at the mean points that were 40°C for the extraction temperature and 18 min for the total time. CONCLUSION The optimized process is faster and spends less energy than the previous one (water; 30 min at 55°C); therefore is greener and more attractive for industrial purposes. This is the first report of extraction optimization of this bioactive flavonoid. Copyright © 2018 John Wiley & Sons, Ltd.
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Affiliation(s)
- Luana Beatriz Dos Santos Nascimento
- Department of Botany, Institute of Biology (IB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
- Postgraduate Program in Biotechnology and Bioprocesses, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Paula Fernandes de Aguiar
- Department of Analytical Chemistry, Instiute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Marcela Araújo Soares Coutinho
- Laboratory of Chemistry for Bioactive Natural Products, Natural Products Research Institute (IPPN), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
- Federal Institute of Education, Science and Technology (IFRJ), Maracanã Unit, Rio de Janeiro, RJ, Brazil
| | - Maria Paula Gonçalves Borsodi
- Laboratory of Immunopharmacology, Institute of Biophysics Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Bartira Rossi-Bergmann
- Laboratory of Immunopharmacology, Institute of Biophysics Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Eliana Schwartz Tavares
- Department of Botany, Institute of Biology (IB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Sônia Soares Costa
- Laboratory of Chemistry for Bioactive Natural Products, Natural Products Research Institute (IPPN), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
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Mathias TRDS, Fernandes de Aguiar P, Batista de Almeida E Silva J, Moretzsohn de Mello PP, Sérvulo EFC. Brewery Waste Reuse for Protease Production by Lactic
Acid Fermentation. Food Technol Biotechnol 2017; 55:218-224. [PMID: 28867951 DOI: 10.17113/ftb.55.02.17.4378] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study evaluated the use of three solid brewery wastes: brewer's spent grain, hot trub and residual brewer's yeast, as alternative media for the cultivation of lactic acid bacteria to evaluate their potential for proteolytic enzyme production. Initially, a mixture experimental design was used to evaluate the effect of each residue, as well as different mixtures (with the protein content set at 4%) in the enzyme production. At predetermined intervals, the solid and liquid fractions were separated and the extracellular proteolytic activity was determined. After selecting the best experimental conditions, a second experiment, factorial experimental design, was developed in order to evaluate the protein content in the media (1 to 7%) and the addition of fermentable sugar (glucose, 1 to 7%). Among the wastes, residual yeast showed the highest potential for the production of extracellular enzymes, generating a proteolytic extract with 2.6 U/mL in 3 h. However, due to the low content of the fermentable sugars in the medium, the addition of glucose also had a positive effect, increasing the proteolytic activity to 4.9 U/mL. The best experimental conditions of each experimental design were reproduced for comparison, and the enzyme content was separated by ethanol precipitation. The best medium produced a precipitated protein with proteolytic activity of 145.5 U/g.
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Affiliation(s)
- Thiago Rocha Dos Santos Mathias
- Laboratory of Fermentation Technology, Federal Institute of Education, Science and Technology of
Rio de Janeiro, Senador Furtado Street 121, BR-20270-021 Rio de Janeiro, RJ, Brazil
| | - Paula Fernandes de Aguiar
- Institute of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos 149,
BR-21941-909 Rio de Janeiro, RJ, Brazil
| | - João Batista de Almeida E Silva
- Pilot Plant of Beverages, Department of Biotechnology, Engineering School of Lorena,
University of São Paulo, BR-12602-810 Lorena, São Paulo, Brazil
| | | | - Eliana Flávia Camporese Sérvulo
- Laboratory of Industrial Microbiology, Department of Biochemical Engineering,
School of Chemistry, Federal University of Rio de Janeiro, Athos da Silveira Ramos 149,
BR-21941-909 Rio de Janeiro, RJ, Brazil
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Moura-Nunes N, Brito TC, da Fonseca ND, de Aguiar PF, Monteiro M, Perrone D, Torres AG. Phenolic compounds of Brazilian beers from different types and styles and application of chemometrics for modeling antioxidant capacity. Food Chem 2015; 199:105-13. [PMID: 26775950 DOI: 10.1016/j.foodchem.2015.11.133] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/23/2015] [Accepted: 11/28/2015] [Indexed: 12/17/2022]
Abstract
In the present study we aimed at investigating, for the first time, phenolic compounds in Brazilian beers of different types and styles. We also aimed at applying chemometrics for modeling beer's antioxidant capacity as a function of their physicochemical attributes (density, refractive index, bitterness and ethanol content). Samples (n=29) were analyzed by PCA originating five groups, especially according to ethanol contents and bitterness. In general, Group V (alcoholic beers with very high bitterness) presented higher refractive index, bitterness, ethanol and phenolics contents than Groups I (non-alcoholic beers) and II (alcoholic beers with low bitterness). Brazilian beers phenolics profile was distinct from that of European beers, with high contents of gallic acid (0.5-14.7 mg/L) and low contents of ferulic acid (0.2-1.8 mg/L). Using PLS, beer's antioxidant capacity measured by FRAP assay could be predicted with acceptable precision by data of ethanol content and density, bitterness and refractive index values.
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Affiliation(s)
- Nathália Moura-Nunes
- Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, R. São Francisco Xavier, 524 Pavilhão João Lyra Filho, 12° andar, Bloco D, sala 12002, 20559-900 Rio de Janeiro, Brazil.
| | - Thárcila Cazaroti Brito
- Laboratório de Bioquímica Nutricional e de Alimentos, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149 CT, Bloco A, sala 528A, 21941-909 Rio de Janeiro, Brazil.
| | - Nívea Dias da Fonseca
- Laboratório de Bioquímica Nutricional e de Alimentos, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149 CT, Bloco A, sala 528A, 21941-909 Rio de Janeiro, Brazil.
| | - Paula Fernandes de Aguiar
- Laboratório de Quimiometria, Departamento de Química Analítica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149, CT, Bloco A, sala 517, 21949-909 Rio de Janeiro, Brazil.
| | - Mariana Monteiro
- Laboratório de Alimentos Funcionais, Departamento de Nutrição Básica e Experimental, Instituto de Nutrição Josué de Castro, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, CCS, Bloco J, sala J2-16, 21941-902 Rio de Janeiro, Brazil.
| | - Daniel Perrone
- Laboratório de Bioquímica Nutricional e de Alimentos, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149 CT, Bloco A, sala 528A, 21941-909 Rio de Janeiro, Brazil.
| | - Alexandre Guedes Torres
- Laboratório de Bioquímica Nutricional e de Alimentos, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos 149 CT, Bloco A, sala 528A, 21941-909 Rio de Janeiro, Brazil.
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Abstract
We compared the impregnation techniques for globules according to the Manual of Technical Norms for Homeopathic Pharmacies (MNTFH) of the Association of Homeopathic Pharmacists (ABFH), Brazilian Homeopathic Pharmacopoeia (FHB) and variations of these techniques. The variables were evaluated in this procedure, three different sizes of globules (N o . 3, 5 and 7), the hydroalcoholic solution of 70% (v/v) Minoxidil 2% (w/v) was used to impregnate the globules in concentrations of 2, 3, 4, 5% (v/w) and the impregnation at 10 %(v/w) was used hydroalcoholic solutions at 70, 80 and 90% (v/v), and four impregnation techniques various ( A -glass, B -paper, C -cup and D -FHB). As the results of content uniformity did not demonstrate a normal distribution, the one way ANOVA and a nonparametric statistical model were used for evaluation. Considering the average, the standard deviation (SD), the individual variance of each group and the principal components analysis graphs (PCA), it was observed that the “A” impregnation of globules technique, with 5% (v/w) of the impregnation concentrations and the No.5 globule presented the best uniformity of dose. As to the drying, there was a need to use a heat source.
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Carvalheira L, Dutra PB, de Aguiar PF. Improving the radiochemical purity determination of 123I-labeled metaiodobenzylguanidine. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-2929-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Oliveira ECD, Aguiar PFD. Validação da metodologia da avaliação de incerteza em curvas de calibração melhor ajustadas por polinômios de segundo grau. QUIM NOVA 2009. [DOI: 10.1590/s0100-40422009000600041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Guarieiro LLN, Pinto AC, Aguiar PFD, Ribeiro NM. Metodologia analítica para quantificar o teor de biodiesel na mistura biodiesel: diesel utilizando espectroscopia na região do infravermelho. QUIM NOVA 2008. [DOI: 10.1590/s0100-40422008000200041] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Bahia-Ramos S, Fernandes de Aguiar P, Lopes AC, Barreto G, Siqueira-Rodrigues AV, Gualberto-Pereira HM, Martín-Dantas HH, Radler de Aquino-Neto F. Effects of caffeine (3 mg) on maximal oxygen consumption, plasmatic lactate and reaction time after maximum effort. (Efectos de la utilización de 3 mg de cafeína sobre los niveles de potencia aeróbica máxima, de lactato plasmático y del tiempo de reacción simple, ambos después de la realización de esfuerzo máximo). Rev int cienc deporte 2006. [DOI: 10.5232/ricyde2006.00504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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