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Nascimento RV, Almeida-Monteiro PS, Pereira VA, Torres TM, Nunes LT, Sales YS, Brito BF, Moreira FH, Araujo WF, Rodrigues JAG, Montenegro AR, Salmito-Vanderley CSB. Sulfated polysaccharides from seaweed as a supplement to Prochilodus brevis sperm freezing medium. Cryo Letters 2022; 43:110-119. [PMID: 36626152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Using sulfated polysaccharides (SP) in fish sperm freezing medium promotes cell maintenance. OBJECTIVE To evaluate the effect of different SP concentrations, extracted from two seaweeds (Gracilaria domingensis and Ulva fasciata), as a supplement to the sperm freezing medium of Prochilodus brevis. MATERIALS AND METHODS Five semen pools were diluted in a solution composed of 5% glucose, 10 % dimethyl sulfoxide (DMSO) and different SP concentrations (0, 0.5, 1.0, 1.5, 2.0, 2.5 or 3.0 mg/mL). The samples were cryopreserved and, after 7 days, rewarmed and analyzed for morphology, plasma membrane integrity, DNA integrity, mitochondrial activity and sperm kinetics [total motility, progressive motility, curvilinear velocity (VCL), straight line velocity (VSL), average path velocity (VAP), linearity (LIN), and wobble (WOB)]. RESULTS There was no interaction between seaweed and SP concentrations. Similar effects were observed with SP extracted from the two seaweeds, regardless of concentration. When comparing the SP concentrations, regardless of the seaweed, 1.0 mg/mL SP showed better results for VCL and VSL. For VAP and WOB, 1.0 mg/mL SP showed better results, but differed from 3.0 mg/mL. LIN followed the same pattern, but differed from SP at 2.5 and 3.0 mg/mL. For progressive motility, 1.0 mg/mL G. domingensis showed superior results compared to the control. For mitochondrial activity, G. domingensis was superior to U. fasciata, regardless of concentration. The lowest concentrations (0.5 and 1.0 mg/mL) showed the best results, regardless of the seaweed. However, the control was superior to all treatments tested. CONCLUSION G. domingensis SP at the lowest concentrations might be a potential supplement to the P. brevis freezing medium. doi.org/10.54680/fr22210110412.
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Affiliation(s)
- R V Nascimento
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil.
| | - P S Almeida-Monteiro
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - V A Pereira
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - T M Torres
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - L T Nunes
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - Y S Sales
- 2 Fish Reproduction Biotechnology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil
| | - B F Brito
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - F H Moreira
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - W F Araujo
- Federal University of Ceara, Fortaleza, Ceara, Brazil
| | | | - A R Montenegro
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - C S B Salmito-Vanderley
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
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Torres TM, Almeida-Monteiro PSD, Nascimento RVD, Pereira VA, Ferreira YM, Lobato JS, Pinheiro RRR, Sales YS, Montenegro AR, Salmito-Vanderley CSB. Sperm cryopreservation of Prochilodus brevis using different concentrations of non-permeable cryoprotectants. Anim Reprod 2022; 19:e20210083. [PMID: 35154437 PMCID: PMC8827319 DOI: 10.1590/1984-3143-ar2021-0083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/11/2022] [Indexed: 11/25/2022] Open
Abstract
The action of substances with non-permeable cryoprotectant potential, besides glucose, has not yet been studied for the species Prochilodus brevis. The objective of this work was to evaluate the action of four non-permeable cryoprotectants on this species sperm cryopreservation. Five pools were cryopreserved in a solution of 5% glucose and 10% dimethyl sulfoxide (Me2SO) associated or not (control) with cryoprotectants egg yolk (5, 10 or 12%), soy lecithin (2.5, 7.5 or 10%), sucrose (5, 10 or 20%) and lactose (5, 8 or 15%). After thawing, samples were evaluated for sperm kinetics (total motility, motility duration, velocities, and wobble - WOB), morphology and membrane and DNA integrity. The treatments containing egg yolk improved significantly (P<0.05) results when compared the control for the membrane integrity parameter. When compared to other treatments, egg yolk, at any concentration, presented higher results (P<0.05) for membrane integrity, total motility, curvilinear velocity (VCL) and average path velocity (VAP) parameters. Egg yolk also showed the best results for WOB, but it did not differ from 5% and 8% lactose and 5% and 20% sucrose. Soy lecithin had the lowest percentages of morphologically normal sperm (P<0.05), while the other treatments did not differ from each other. There was no difference regarding DNA integrity data. Thus, 5% egg yolk is indicated as a non-permeable cryoprotectant for P. brevis, in association with 5% glucose and 10% Me2SO.
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Rodrigues MO, Moraes AB, de Paula MP, Pereira VA, Leão ATT, Vieira Neto L. Adrenal incidentaloma as a novel independent predictive factor for periodontitis. J Endocrinol Invest 2021; 44:2455-2463. [PMID: 33788166 DOI: 10.1007/s40618-021-01557-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 03/22/2021] [Indexed: 01/14/2023]
Abstract
PURPOSE There are no data regarding periodontal derangements in patients with adrenal incidentalomas (AI). We assessed the frequency and severity of periodontitis in patients with AI [non-functioning adrenal incidentaloma (NFAI) and possible autonomous cortisol secretion (ACS)] and compared with individuals with normal adrenal. METHODS A cross-sectional study evaluated thirty-five individuals with AI and 26 controls. NFAI and possible ACS diagnosis was based on the current guidelines: NFAI [cortisol levels after 1 mg dexamethasone suppression test (1 mg-DST) ≤ 1.8 µg/dL (≤ 50 nmol/L)]; possible ACS [cortisol levels after 1 mg-DST 1.9-5.0 µg/dL (51-138 nmol/L)]. Sociodemographic data were collected, and a full-mouth periodontal evaluation was performed. RESULTS There was no significant difference between groups regarding age, sex, income, ethnicity, education level, smoking, body mass index, dysglycemia, and arterial hypertension. Patients with AI exhibited worse periodontal conditions than controls for the following periodontal clinical parameters: mean percentage of probing pocket depth (PPD) and clinical attachment level (CAL) ≥ 5 mm (p < 0.001 and p = 0.006, respectively). Patients with NFAI and possible ACS showed higher gingival bleeding index (p = 0.014), bleeding on probing (p < 0.001), and CAL (p < 0.001) means compared to controls. The frequencies of periodontitis were 72.7% in patients with NFAI, 84.6% in possible ACS, and 30.8% in controls (p = 0.001). Periodontitis was more severe in patients with possible ACS than NFAI and controls. Patients with NFAI and possible ACS exhibited odds ratio for periodontitis of 4.9 (p = 0.016) and 8.6 (p = 0.02), respectively. CONCLUSION Patients with AI have higher frequency and severity of periodontitis than controls. The presence of AI was an independent predictive factor for periodontitis.
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Affiliation(s)
- M O Rodrigues
- Department of Dental Clinic, Division of Periodontics, Dental School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A B Moraes
- Department of Internal Medicine and Endocrine Unit, School of Medicine, Federal University of Rio de Janeiro, Clementino Fraga Filho University Hospital, Professor Rodolpho Paulo Rocco Street, 255. 9th floor-Endocrinology Unit Rio de Janeiro, Rio de Janeiro, RJ, 21941-913, Brazil
| | - M P de Paula
- Department of Internal Medicine and Endocrine Unit, School of Medicine, Federal University of Rio de Janeiro, Clementino Fraga Filho University Hospital, Professor Rodolpho Paulo Rocco Street, 255. 9th floor-Endocrinology Unit Rio de Janeiro, Rio de Janeiro, RJ, 21941-913, Brazil
| | - V A Pereira
- Department of Dental Clinic, Division of Periodontics, Dental School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A T T Leão
- Department of Dental Clinic, Division of Periodontics, Dental School, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - L Vieira Neto
- Department of Internal Medicine and Endocrine Unit, School of Medicine, Federal University of Rio de Janeiro, Clementino Fraga Filho University Hospital, Professor Rodolpho Paulo Rocco Street, 255. 9th floor-Endocrinology Unit Rio de Janeiro, Rio de Janeiro, RJ, 21941-913, Brazil.
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Pereira VA, do Nascimento RV, de Almeida-Monteiro PS, Oliveira-Araujo MS, Ferreira YM, Torres TM, Sales YS, Fernandes Araujo IW, Gurgel Rodrigues JA, Macedo Feitosa JP, de Aguiar Soares S, Montenegro AR, Salmito-Vanderley CSB. The effect of glycosaminoglycans, extracted from the skin of tilapia, in the sperm freezing medium of Colossoma macropomum. Cryo Letters 2021; 42:272-282. [PMID: 35363848] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND Sulfated polysaccharides from the skin of Nile tilapia (Oreochromis niloticus), added to the tambaqui (Colossoma macropomum) semen diluting medium, can be potential antioxidants and promote the maintenance of sperm quality. OBJECTIVE To evaluate the use of different concentrations of glycosaminoglycans (GAGs) from the skin of Nile tilapia as a supplement in two cryogenic media for tambaqui semen. MATERIALS AND METHODS Tambaqui males received a single dose of pituitary carp extract. The semen was collected for pool analysis and, later, cryopreserved in liquid nitrogen. The pools were diluted and frozen in a solution containing fish-specific powdered coconut water (ACP-104) and 10% DMSO or 5% Glucose and 10% DMSO and supplemented with different concentrations of GAGs. The controls had no GAGs addition. After 45 days, the samples were thawed by immersion in a water bath and evaluated for membrane and DNA integrity, morphology and sperm kinetics. RESULTS The parameters of linearity (LIN), straightness (STR) and DNA integrity of sperm frozen in 5% Glucose showed better results than ACP-104. For membrane integrity, concentrations of 0 and 1.0 mg/mL were better than 5 mg/mL. Semen motility in 5% Glucose showed superior results at concentrations lower than 5 mg/mL of GAGs. For VCL and VAP, in ACP-104, 3.0 mg/mL exceeded the other treatments. In 5% Glucose, for VCL, 4.0 mg/mL showed the lowest results compared to concentrations of <3.5 mg/mL and, for VAP, it also differed from 4.5 mg/mL CONCLUSION: Therefore, the skin of Nile tilapia has GAGs, in low concentrations, capable of improving the post-thawed sperm quality of tambaqui, especially in 5% Glucose medium.
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Affiliation(s)
- V A Pereira
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil.
| | - R V do Nascimento
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - P S de Almeida-Monteiro
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - M S Oliveira-Araujo
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - Y M Ferreira
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - T M Torres
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - Y S Sales
- Fish Reproduction Biotechnology Laboratory, State University of Ceara, Fortaleza, Ceara, Brazil
| | - I W Fernandes Araujo
- Researcher in Biotechnology of Aquatic Organisms, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - J A Gurgel Rodrigues
- Researcher in Biotechnology of Aquatic Organisms, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - J P Macedo Feitosa
- Polymers and Material Innovation Laboratory, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - S de Aguiar Soares
- Polymers and Material Innovation Laboratory, Federal University of Ceara, Fortaleza, Ceara, Brazil
| | - A R Montenegro
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
| | - C S B Salmito-Vanderley
- Fish Reproduction Biotechnology Laboratory, Postgraduate Program in Veterinary Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
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Nunes LT, Oliveira-Araújo MS, Lopes JT, De Almeida-Monteiro PS, Do Nascimento RV, Pereira VA, Ferreira YM, Montenegro AR, Ferreira JU, Salmito-Vanderley CSB. Fertilizing Capacity of the Cryopreserved Sperm of Prochilodus brevis. ACTA SCI VET 2019. [DOI: 10.22456/1679-9216.92791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background: Seminal cryopreservation is a technique that optimizes aquacultural production, as it requires less breeding and enables reproduction outside of the breeding season. This technique also helps to preserve species, thus reducing the pressure on the natural stocks. Several studies have sought to develop freezing protocols that result in semen of a good quality. However, some studies do not evaluate the ability of frozen semen to produce viable larvae. Therefore, the aim of this study was to verify the fertilizing capacity of the frozen semen of Prochilodus brevis.Materials, Methods & Results: Semen from twenty adult males of the Brazilian bocachico was collected and evaluated to establish the total motility, curvilinear velocity, straight linear velocity, average path velocity, membrane integrity, pH, and concentration. Six pools were formed, each of which was diluted in a freezing medium containing 5% glucose with 10% dimethyl sulfoxide (DMSO) or 5% glucose with 10% methyl glycol (MG). The samples were loaded into 0.25 mL French straws, frozen in a dry shipper, and stored in a liquid nitrogen canister. The semen was then thawed and evaluated to establish the total motility, curvilinear velocity, straight linear velocity, average path velocity, and membrane integrity. For the fertilization test, four females were used. The oocytes from each female were divided into three batches and fertilized with either fresh or cryopreserved semen. The rates of fertilization, hatching, and larval survival were then measured. Data were expressed as the mean ± standard deviation and analyzed using SAS (2002). The frozen semen with glucose + DMSO was significantly higher (P < 0.001) than the frozen semen with glucose + MG, in all seminal quality parameters evaluated (63.95 ± 15.88% and 25.36 ± 3.53% for the motility, 36.38 ± 7.02 μm.s-1 and 20.45 ± 2.84 μm.s-1 for the curvilinear velocity, 19.26 ± 2.74 μm.s-1 and 3.03 ± 1.40 μm.s-1 for the straight linear velocity, 25.70 ± 6.51 μm.s-1 and 6.90 ± 1.12 μm.s-1 for the average path velocity, and 63.58 ± 6.95% and 35.58 ± 11.26% for the membrane integrity, respectively). MG were very close to zero and not statistically significant. Regarding these same parameters, there were no significant differences (P > 0.05) when the fresh semen was compared to the cryopreserved semen with glucose + DMSO (36.25 ± 2.5% and 29.16 ± 5.64% for the fertilization rate, 38.56 ± 11.23% and 29.33 ± 11.75% for the hatching rate, and 11.59 ± 5.16% and 7.63 ± 5.46% for the larval survival rate, respectively).Discussion: This is the first study of the artificial fertilization of Prochilodus brevis using cryopreserved semen. Seminal quality parameters are important for predicting the success of the cryopreservation technique, however, in vivo tests are essential to confirm such success. Thus, obtaining larvae is a major step towards the standardization of a cryopreservation protocol for a particular species. It is known that cryopreservation reduces the seminal quality but is a necessary process for the conservation of male gametes in the long term and, as shown in this study, good results can be obtained. In this study, the best results were obtained with the inclusion of DMSO in the freezing medium. This effect can be attributed to DMSO having a very low molecular weight, which decreases the formation of ice crystals. Considering the results obtained, we concluded that it is feasible to obtain larvae of the Brazilian bocachico using frozen semen in a 5% glucose solution with 10% DMSO.
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Alves Pereira V, Martins Forte J, Vieira Arruda-Júnior JP, Mendonça Diniz F, Maggioni R, Brito Salmitovanderley CS. Identification and characterization of microsatellite loci in West Atlantic sea cucumber Holothuria grisea (Selenka 1867). J Genet 2018; 97:1363-1369. [PMID: 30555084] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The sea cucumber Holothuria grisea has become the subject of intense and unregulated fishing in northeastern Brazil due to their growing demand in Asian market. However, there is little knowledge about the dynamics and genetics of H. grisea wild populations on the South American coast. In this study, we present the first set of H. grisea microsatellite markers, identified and characterized using Illumina paired-end reads of whole genome shotgun sequencing. From 50 strictly selected candidates, eight novel microsatellite markers were successfully developed. We then genotyped 30 individuals to evaluate the degree of polymorphism and validate the markers. The number of alleles ranged from three to 14, while observed and expected heterozygotes ranged from 0.156 to 0.906 and from 0.283 to 0.774, respectively. After correcting for multiple tests,we found no evidence of linkage disequilibrium in all pairwise combinations between the loci. One locus (Hgr15607) revealed deviation from the Hardy-Weinberg equilibrium, as well as the presence of null alleles. However, we observed significant differences in frequency distribution between males and females at locus Hgr15607. We believe that the markers describedhere will be useful for conservation efforts and management of H. grisea fisheries and for prospective aquaculture of these organisms.
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Affiliation(s)
- Vanessa Alves Pereira
- Faculdade de Veterinária, Universidade Estadual do Ceará, Pós-graduação em Ciências Veterinárias, Av. Dr. Silas Munguba 1700, Fortaleza, CE 60714-903, Brazil.
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Pereira VA, Forte JM, Arruda-Júnior JPV, Diniz FM, Maggioni R, Salmito-Vanderley CSB. Identification and characterization of microsatellite loci in West Atlantic sea cucumber Holothuria grisea (Selenka 1867). J Genet 2018. [DOI: 10.1007/s12041-018-1022-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Arruda SLM, Branisso HJP, Figueiredo EC, Pereira VA, Luna JA, Araujo TPF. Analysis of the TIMI score in patients admitted with ST-segment elevation myocardial infarction in an intensive care unit. Crit Care 2007. [PMCID: PMC3301177 DOI: 10.1186/cc5837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Carmona MJC, Malbouisson LMS, Pereira VA, Bertoline MA, Omosako CEK, Le Bihan KB, Auler JOC, Santos SRCJ. Cardiopulmonary bypass alters the pharmacokinetics of propranolol in patients undergoing cardiac surgery. Braz J Med Biol Res 2005; 38:713-21. [PMID: 15917952 DOI: 10.1590/s0100-879x2005000500008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The pharmacokinetics of propranolol may be altered by hypothermic cardiopulmonary bypass (CPB), resulting in unpredictable postoperative hemodynamic responses to usual doses. The objective of the present study was to investigate the pharmacokinetics of propranolol in patients undergoing coronary artery bypass grafting (CABG) by CPB under moderate hypothermia. We evaluated 11 patients, 4 women and 7 men (mean age 57 +/- 8 years, mean weight 75.4 +/- 11.9 kg and mean body surface area 1.83 +/- 0.19 m(2)), receiving propranolol before surgery (80-240 mg a day) and postoperatively (10 mg a day). Plasma propranolol levels were measured before and after CPB by high-performance liquid chromatography. Pharmacokinetic Solutions 2.0 software was used to estimate the pharmacokinetic parameters after administration of the drug pre- and postoperatively. There was an increase of biological half-life from 4.5 (95% CI = 3.9-6.9) to 10.6 h (95% CI = 8.2-14.7; P < 0.01) and an increase in volume of distribution from 4.9 (95% CI = 3.2-14.3) to 8.3 l/kg (95% CI = 6.5-32.1; P < 0.05), while total clearance remained unchanged 9.2 (95% CI = 7.7-24.6) vs 10.7 ml min(-1) kg(-1) (95% CI = 7.7-26.6; NS) after surgery. In conclusion, increases in drug distribution could be explained in part by hemodilution during CPB. On the other hand, the increase of biological half-life can be attributed to changes in hepatic metabolism induced by CPB under moderate hypothermia. These alterations in the pharmacokinetics of propranolol after CABG with hypothermic CPB might induce a greater myocardial depression in response to propranolol than would be expected with an equivalent dose during the postoperative period.
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Affiliation(s)
- M J C Carmona
- Disciplina de Anestesiologia, Serviço de Anestesiologia e Terapia Intensiva Cirúrgica, Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina, Universidade de São PauloSão Paulo, SP, Brasil.
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Arruda S, Cândida J, Pereira F, Assis G, Martins D, Martins P, Pinto M, Pereira V. Crit Care 2005; 9:P88. [DOI: 10.1186/cc3632] [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: 11/10/2022] Open
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Arruda SLM, Gangoni CMC, Pereira VA, Branisso HJP, Figueiredo EC, Achcar A, Luna JA. Unstable angina and non-ST-segment elevation myocardial infarction: analysis of consecutive series of patients and later follow-up. Crit Care 2005. [PMCID: PMC4097485 DOI: 10.1186/cc3578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
| | | | | | | | | | - A Achcar
- Hospital Santa Lúcia, Brasília, Brazil
| | - JA Luna
- Hospital Santa Lúcia, Brasília, Brazil
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Arruda S, Pereira V, Gangoni C, Branisso H, Figueiredo E, Luna J, Ferreira D. Crit Care 2005; 9:P21. [DOI: 10.1186/cc3565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Arruda S, Pereira V, Gangoni C, Figueiredo E, Branisso H, Ferreira D, Piauilino M. Crit Care 2005; 9:P18. [DOI: 10.1186/cc3562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Carmona MJC, Pereira VA, Auler JOC, Santos SRCJ. Propranolol kinetics in patients submitted to cardiac surgery with cardiopulmonary bypass. Crit Care 2001. [PMCID: PMC3300906 DOI: 10.1186/cc1339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Pereira VA, Auler JO, Carmona MJ, Mateus FH, Lanchote VL, Breimer DD, Santos SR. A micromethod for quantitation of debrisoquine and 4-hydroxydebrisoquine in urine by liquid chromatography. Braz J Med Biol Res 2000; 33:509-14. [PMID: 10775881 DOI: 10.1590/s0100-879x2000000500004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We describe a new simple, selective and sensitive micromethod based on HPLC and fluorescence detection to measure debrisoquine (D) and 4-hydroxydebrisoquine (4-OHD) in urine for the investigation of xenobiotic metabolism by debrisoquine hydroxylase (CYP2D6). Four hundred microl of urine was required for the analysis of D and 4-OHD. Peaks were eluted at 8.3 min (4-OHD), 14.0 min (D) and 16.6 min for the internal standard, metoprolol (20 microg/ml). The 5-microm CN-reverse-phase column (Shimpack, 250 x 4.6 mm) was eluted with a mobile phase consisting of 0.25 M acetate buffer, pH 5.0, and acetonitrile (9:1, v/v) at 0.7 ml/min with detection at lambdaexcitation = 210 nm and lambdaemission = 290 nm. The method, validated on the basis of measurements of spiked urine, presented 3 ng/ml (D) and 6 ng/ml (4-OHD) sensitivity, 390-6240 ng/ml (D) and 750-12000 ng/ml (4-OHD) linearity, and 5.7/8.2% (D) and 5.3/8.2% (4-OHD) intra/interassay precision. The method was validated using urine of a healthy Caucasian volunteer who received one 10-mg tablet of Declinax(R), po, in the morning after an overnight fast. Urine samples (diuresis of 4 or 6 h) were collected from zero to 24 h. The urinary excretion of D and 4-OHD, Fel (0-24 h), i.e., fraction of dose administered and excreted into urine, was 6.4% and 31.9%, respectively. The hydroxylation capacity index reported as metabolic ratio was 0.18 (D/4-OHD) for the person investigated and can be compared to reference limits of >12.5 for poor metabolizers (PM) and <12.5 for extensive metabolizers (EM). In parallel, the recovery ratio (RR), another hydroxylation capacity index, was 0.85 (4-OHD: SigmaD + 4-OHD) versus reference limits of RR <0.12 for PM and RR >0. 12 for EM. The healthy volunteer was considered to be an extensive metabolizer on the basis of the debrisoquine test.
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Affiliation(s)
- V A Pereira
- Laboratório de Farmacologia Terapêutica, Unidade 2, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brasil
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Santos SR, Papini O, Omosako CE, Pereira MD, Quintavalle TB, Riccio MF, Kurata A, Pereira VA, Di-Pietro G, Della-Paschoa OE, Danhof M, Da-Luz PL. A simple HPLC-fluorescence method for the measurement of R,S-sotalol in the plasma of patients with life-threatening cardiac arrhythmias. Braz J Med Biol Res 2000; 33:199-204. [PMID: 10657059 DOI: 10.1590/s0100-879x2000000200006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
R,S-sotalol, a ss-blocker drug with class III antiarrhythmic properties, is prescribed to patients with ventricular, atrial and supraventricular arrhythmias. A simple and sensitive method based on HPLC-fluorescence is described for the quantification of R,S-sotalol racemate in 500 microl of plasma. R,S-sotalol and its internal standard (atenolol) were eluted after 5.9 and 8.5 min, respectively, from a 4-micron C18 reverse-phase column using a mobile phase consisting of 80 mM KH2PO4, pH 4.6, and acetonitrile (95:5, v/v) at a flow rate of 0.5 ml/min with detection at lambdaex = 235 nm and lambdaem = 310 nm, respectively. This method, validated on the basis of R,S-sotalol measurements in spiked blank plasma, presented 20 ng/ml sensitivity, 20-10,000 ng/ml linearity, and 2.9 and 4.8% intra- and interassay precision, respectively. Plasma sotalol concentrations were determined by applying this method to investigate five high-risk patients with atrial fibrillation admitted to the Emergency Service of the Medical School Hospital, who received sotalol, 160 mg po, as loading dose. Blood samples were collected from a peripheral vein at zero, 0.5, 1.0, 1.5, 2.0, 3.0, 4. 0, 6.0, 8.0, 12.0 and 24.0 h after drug administration. A two-compartment open model was applied. Data obtained, expressed as mean, were: C MAX = 1230 ng/ml, T MAX = 1.8 h, AUC T = 10645 ng h-1 ml-1, Kab = 1.23 h-1, alpha = 0.95 h-1, ss = 0.09 h-1, t((1/2))ss = 7.8 h, ClT/F = 3.94 ml min-1 kg-1, and Vd/F = 2.53 l/kg. A good systemic availability and a fast absorption were obtained. Drug distribution was reduced to the same extent in terms of total body clearance when patients and healthy volunteers were compared, and consequently elimination half-life remained unchanged. Thus, the method described in the present study is useful for therapeutic drug monitoring purposes, pharmacokinetic investigation and pharmacokinetic-pharmacodynamic sotalol studies in patients with tachyarrhythmias.
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Affiliation(s)
- S R Santos
- Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina and Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brasil
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Lanchote VL, Bonato PS, Cerqueira PM, Pereira VA, Cesarino EJ. Enantioselective analysis of metoprolol in plasma using high-performance liquid chromatographic direct and indirect separations: applications in pharmacokinetics. J Chromatogr B Biomed Sci Appl 2000; 738:27-37. [PMID: 10778923 DOI: 10.1016/s0378-4347(99)00476-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Direct enantioselective separation on chiral stationary phases and indirect separation based on the formation of diastereomeric derivatives were developed and compared for the HPLC analysis of R(+) and S(-)-metoprolol in human plasma. Plasma samples prepared using solid-phase extraction columns or liquid-liquid extraction were directly analyzed on a Chiralpack AD or on a Chiralcel OD-H columns, respectively. S-(-)-menthyl choroformate was also used to yield diastereomeric derivatives resolved on a RP-8 column. The methods were employed to determine plasma concentrations of metoprolol enantiomers in a pharmacokinetic study of single dose administration of racemic metoprolol to a healthy Caucasian volunteer phenotyped as extensive metabolizer of debrisoquine. The correlation coefficients among enantioselective metoprolol plasma concentrations (5-223 ng/ml) obtained by the three methods were equal or higher than 0.99. The direct method that employed the chiral column Chiralpak AD may be considered the most sensitive, although the three methods demonstrated interchangeable use in the pharmacokinetic investigation.
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Affiliation(s)
- V L Lanchote
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, São Paulo, Brazil.
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