1
|
Teixeira BC, Boeno FP, Geremia JM, Correa CDS, Lopes AL, Macedo RCO, Carteri RBK, Bandinelli E, Vaz MA, Ribeiro JL, Reischak-Oliveira A. Eccentric, but not concentric muscle contraction induce inflammation and impairs fibrinolysis in healthy young men. Appl Physiol Nutr Metab 2023; 48:386-392. [PMID: 36800893 DOI: 10.1139/apnm-2022-0376] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Different types of muscle contraction can cause different damage to the musculature and differences in inflammatory responses. Acute increases in circulatory inflammation markers can influence the crosstalk between coagulation and fibrinolysis processes, increasing the risk of thrombus formation and detrimental cardiovascular events. The aim of this study was to analyze the effects of concentric and eccentric exercise on hemostasis markers, C-reactive protein (CRP), and the relationship between these variables. Eleven healthy subjects with a mean age of 25.4 ± 2.8, non-smokers, with no history of cardiovascular disease and blood type O, randomly performed an isokinetic exercise protocol consisting of 75 concentric (CP) or eccentric (EP) contractions of knee extension, divided into five sets of 15 repetitions combined with 30-s rest. Blood samples for analysis of FVIII, von Willebrand factor, tissue plasminogen activator (t-PA), plasminogen activator inhibitor type-1 (PAI-1), and CRP were collected pre, post, 24 h, and 48 h after each protocol. Increased levels of CRP at 48 h in EP versus CP (p = 0.002), increased PAI-1 activity 48 h in EP versus CP (p = 0.044), and a reduction in t-PA at 48 h when compared with post-protocol in both protocols (p = 0.001). A correlation was found between CRP and PAI-1 at 48 h of PE (r2 = 0.69; p = 0.02). This study showed that both EP and CP increase the clotting process, albeit only the exercise performed eccentrically induces inhibition of fibrinolysis. This is possibly due to the increase in PAI-1 48 h after the protocol, which correlates with the increase in inflammation as demonstrated by the CRP levels.
Collapse
Affiliation(s)
- Bruno Costa Teixeira
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil.,Department of Human Movement Sciences (DCHM), Faculty of Physical Education, State University of Minas Gerais (UEMG), 3996 São Paulo Avenue, Ibirité 32412-190, Brazil
| | - Franccesco Pinto Boeno
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil.,Department of Applied Physiology and Kinesiology, University of Florida, 3226, Gainesville, FL, USA
| | - Jeam Marcel Geremia
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| | - Cleiton da Silva Correa
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| | - André Luiz Lopes
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| | - Rodrigo Cauduro Oliveira Macedo
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil.,University of Santa Cruz do Sul (UNISC), 2293 Independence Avenue, Santa Cruz do Sul 96815-900, Brazil
| | - Randhall Bruce Kreismann Carteri
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil.,Methodist University Center (IPA), 80 Joaquim Pedro Salgado Street, Poro Alegre 90420-060, Brazil
| | - Eliane Bandinelli
- Institute of Bioscience - Genetics Department, Federal University of Rio Grande do Sul (UFRGS), 9500 Bento Gonçalves Avenue, Porto Alegre 91501-970, Brazil
| | - Marco Aurélio Vaz
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| | - Jerri Luiz Ribeiro
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| | - Alvaro Reischak-Oliveira
- Program of Human Movement Sciences, Faculty of Physical Education, Physiotherapy and Dance (ESEFID), Federal University of Rio Grande do Sul (UFRGS), 750 Felizardo Street, Porto Alegre 90690-200, Brazil
| |
Collapse
|
2
|
Ramis TR, Boeno FP, Leal-Menezes R, Munhoz SV, Farinha JB, Ribeiro JL, Reischak-Oliveira A. Effects of exercise modalities on decreased blood pressure in patients with hypertension. Front Physiol 2022; 13:993258. [PMID: 36311227 PMCID: PMC9614347 DOI: 10.3389/fphys.2022.993258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/26/2022] [Indexed: 11/23/2022] Open
Abstract
This study aimed to evaluate the acute effects of aerobic and resistance exercises on blood pressure and endothelial blood markers. We also correlated post-exercise blood pressure response with baseline cardiovascular parameters in middle-aged patients with hypertension. This cross-sectional study randomized 54 volunteers into the aerobic exercise group (AG, n = 27; 45.6 ± 7.7 years) or dynamic resistance exercise group (RG, n = 27; 45.8 ± 8.4 years). Blood marker evaluation, cardiopulmonary exercise tests, resting blood pressure monitoring, ambulatory blood pressure monitoring (ABPM), flow-mediated dilatation monitoring, and body composition evaluation were carried out. Exercise sessions were performed to evaluate post-exercise hypotension (PEH) and endothelial marker responses, in addition to post-exercise ABPM (ABPMex). This study is an arm of the study which was approved by the local ethics committee (No. 69373217.3.0000.5347) in accordance with the Helsinki Declaration and was registered at ClinicalTrials.gov (NCT03282942). The AG performed walking/running at 60% of the reserve heart rate, while the RG performed 10 exercises with two sets of 15–20 repetitions. The mean 24 h ABPM and ABPMex values showed no significant statistical differences. Systolic and diastolic blood pressure hypotension after aerobic and dynamic resistance were −10.59 ± 5.24/−6.15 ± 6.41 mmHg and −5.56 ± 7.61/−6.20 ± 8.25 mmHg, respectively. For an up-to-7 h assessment of resting pressure, there was a positive effect in the aerobic group. The concentrations of nitrites/nitrates (NOx) and endothelin-1 (ET-1) did not change during hypotension. Moreover, PEH and ABPMex were significantly correlated with baseline health variables. Thus, when middle-aged patients with hypertension perform aerobic or resistance exercise, the NOx/ET-1 pathway does not provide the best explanation for PEH. Finally, we found associations between baseline cardiovascular variables and endothelial vasoconstrictors with PEH.
Collapse
Affiliation(s)
- Thiago Rozales Ramis
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- *Correspondence: Thiago Rozales Ramis,
| | - Franccesco Pinto Boeno
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States
| | - Rodrigo Leal-Menezes
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Samuel Vargas Munhoz
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Juliano Boufleur Farinha
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Jerri Luiz Ribeiro
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Alvaro Reischak-Oliveira
- Exercise Research Laboratory, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| |
Collapse
|
3
|
Munhoz SV, Ramis TR, dos Santos LP, Ribeiro JL. Comparison of cardiopulmonary exercise testing performed with blood flow restriction vs. a traditional maximum test on execution speed, ventilatory thresholds and maximum oxygen uptake. Sport Sci Health 2020. [DOI: 10.1007/s11332-020-00644-4] [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: 10/24/2022]
|
4
|
Ramis TR, Muller CHDL, Boeno FP, Teixeira BC, Rech A, Pompermayer MG, Medeiros NDS, Oliveira ÁRD, Pinto RS, Ribeiro JL. Effects of Traditional and Vascular Restricted Strength Training Program With Equalized Volume on Isometric and Dynamic Strength, Muscle Thickness, Electromyographic Activity, and Endothelial Function Adaptations in Young Adults. J Strength Cond Res 2020; 34:689-698. [PMID: 30063556 DOI: 10.1519/jsc.0000000000002717] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Ramis, TR, Muller, CHdL, Boeno, FP, Teixeira, BC, Rech, A, Pompermayer, MG, Medeiros, NdS, Oliveira, ÁRd, Pinto, RS, and Ribeiro, JL. Effects of traditional and vascular restricted strength training program with equalized volume on isometric and dynamic strength, muscle thickness, electromyographic activity, and endothelial function adaptations in young adults. J Strength Cond Res 34(3): 689-698, 2020-The purpose of the study was to evaluate and compare the acute and chronic effects of partial vascular occlusion training in young, physically active adults. Neuromuscular, morphological, and endothelial function responses were compared between high-intensity resistance training (HI-RT) and low-intensity resistance training with partial vascular occlusion (LI-BFR), despite the same training volume. The 28 subjects (age, 23.96 ± 2.67 years) were randomly assigned into 2 groups: LI-BFR (n = 15) and HI-RT (n = 13). Both groups performed unilateral exercise of elbow flexion (EF) and knee extension (KE) 3 times per week for 8 weeks. This study was approved by the ethics committee. Flow-mediated dilation showed a significant difference in baseline and post-training in the LI-BFR group (4.44 ± 0.51 vs. 6.35 ± 2.08 mm, respectively). For nitrite/nitrate concentrations only, there was a significant difference when comparing pre- and post-acute exercise in both groups. The torque and rep. Sixty percent 1 repetition maximum had improvements in both groups. There were differences between groups only in isometric delta EF and isokinetic delta KE (EF 3.42 ± 5.09 and 9.61 ± 7.52 N·m; KE 12.78 ± 25.61 and 42.69 ± 35.68 N·m; LI-BFR and HI-RT groups, respectively). There was a significant increase of muscle thickness in both groups. An increase of both isokinetic and isometric electromyography (EMG) of biceps of the HI-RT group was observed. The same was observed for the LI-BFR group regarding isokinetic and isometric EMG of vastus lateralis. Thus, in addition to strength and hypertrophy gains, this study also shows benefits related to vascular function. For practical applications, this study demonstrates a clinical importance of LI-BFR training as an alternative methodology.
Collapse
Affiliation(s)
| | | | | | | | - Anderson Rech
- Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | | | - Jerri Luiz Ribeiro
- IPA Methodist University Center, Porto Alegre, Rio Grande do Sul, Brazil; and
| |
Collapse
|
5
|
de Lemos Muller CH, Ramis TR, Ribeiro JL. Effects of low-load resistance training with blood flow restriction on the perceived exertion, muscular resistance and endurance in healthy young adults. Sport Sci Health 2019. [DOI: 10.1007/s11332-019-00536-2] [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]
|
6
|
de-Oliveira JL, da-Silva IR, Ramis TR, Ferreira CV, Soares SM, Ribeiro JL, Dorneles GP, Wagner LC. Endothelial function and lipid profile of individuals with schizophrenia participating in a supported employment program. Rev Bras Med Trab 2018; 16:167-174. [PMID: 32270081 DOI: 10.5327/z1679443520180178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/30/2017] [Accepted: 05/25/2018] [Indexed: 11/05/2022] Open
Abstract
Background The social function of individuals with schizophrenia is usually poor and this population exhibits a sedentary lifestyle. Social participation, inclusion in the world of work in particular, might favorably interfere with the lives of these individuals by reducing sedentarism and improving their state of health. Objective To analyze the lipid profile and endothelial function markers among individuals with schizophrenia enrolled in a supported employment program. Methods Quantitative quasi-experimental study conducted with 14 individuals with schizophrenia enrolled in a labor inclusion program. Participants were assessed before enrolment (time-point 1) and one year later (time-point 2). Total cholesterol and fractions, triglycerides, serum nitrates and nitrites (endothelial function markers) were measured. The data were analyzed with software SPSS 20. Results The high-density lipoprotein (HDL) and low-density lipoprotein (LDL) levels exhibited significant changes one year after inclusion in the labor market. HDL increased from 82.30 to 98.60 mg/dL (p<0.01) and LDL decreased from 54.50 to 44.45 mg/dL (p<0.02). The triglyceride and total cholesterol levels remained stable. The nitrate and nitrite level exhibited significant reduction from 15.20 to 14.48 µMol (p<0.01). Conclusion Participation in the supported employment program might have favorably influenced the participants' lipid profile and endothelial function. Nitrites have been described as mediators in the neural inflammatory process, and reduction of their levels is associated with better prognosis of chronic diseases such as schizophrenia.
Collapse
Affiliation(s)
- Jordana Lectzow de-Oliveira
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil
| | - Ivy Reichert da-Silva
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil
| | - Thiago Rozales Ramis
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil
| | - Carmen Vera Ferreira
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil.,Center of Prevention and Intervention in Psychoses, Projeto Capacitar - Porto Alegre (RS), Brazil
| | - Sandra Maria Soares
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil.,Center of Prevention and Intervention in Psychoses, Projeto Capacitar - Porto Alegre (RS), Brazil
| | - Jerri Luiz Ribeiro
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil
| | | | - Luciane Carniel Wagner
- Biosciences and Rehabilitation Mastering Course, Methodist University Center, IPA - Porto Alegre (RS), Brazil.,Constructo Psychoanalytic Training Course - Porto Alegre (RS), Brazil
| |
Collapse
|
7
|
Boeno FP, Ramis TR, Farinha JB, de Lemos LS, Medeiros NDS, Ribeiro JL. Acute effects of strength exercise with blood flow restriction on vascular function of young healthy males. J Vasc Bras 2018; 17:122-127. [PMID: 30377421 PMCID: PMC6205709 DOI: 10.1590/1677-5449.011017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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] [Indexed: 01/24/2023] Open
Abstract
Background Strength training with blood flow restriction (STBFR) provokes similar neuromuscular adaptations to traditional strength training using low training loads. However, there is a need for better understanding of the repercussions for antioxidant parameters and vascular function. Objectives: The objective of the present study was to investigate the effects of a session of low intensity strength training with blood flow restriction, compared with high intensity and low intensity strength training without blood flow restriction, on the levels of nitric oxide products and antioxidant enzyme activity in healthy young men. Methods: Eleven young men performed three strength exercise sessions: low intensity with blood flow restriction (LIBFR), high intensity (HI), and low intensity (LI). Activity of the antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) was assessed and metabolites of nitric oxide (NOx) were assayed before and after each session. Results: There were no changes to NOx plasma levels under the different exercise conditions (p > 0.05). However, SOD activity exhibited a significant reduction after the LIBFR condition (p < 0.05), while CAT activity reduced significantly after the LI condition (p < 0.05). Conclusions: The results of this study suggest that one session of low intensity strength training with blood flow restriction does not reduce bioavailability of nitric oxide or induce redox imbalance in healthy young men.
Collapse
Affiliation(s)
- Francesco Pinto Boeno
- Universidade Federal do Rio Grande do Sul - UFRGS, Programa de Pós-graduação em Ciências do Movimento Humano, Porto Alegre, RS, Brasil.,Universidade Regional Integrada do Alto Uruguai e das Missões - URI, Departamento de Ciências da Saúde, São Luiz Gonzaga, RS, Brasil
| | - Thiago Rozales Ramis
- Universidade Federal do Rio Grande do Sul - UFRGS, Programa de Pós-graduação em Ciências do Movimento Humano, Porto Alegre, RS, Brasil.,Centro Universitario Metodista - IPA, Porto Alegre, RS, Brasil
| | - Juliano Boufleur Farinha
- Universidade Federal do Rio Grande do Sul - UFRGS, Programa de Pós-graduação em Ciências do Movimento Humano, Porto Alegre, RS, Brasil
| | | | | | | |
Collapse
|
8
|
Dorneles GP, Colato AS, Galvão SL, Ramis TR, Ribeiro JL, Romão PR, Peres A. Acute response of peripheral CCr5 chemoreceptor and NK cells in individuals submitted to a single session of low-intensity strength exercise with blood flow restriction. Clin Physiol Funct Imaging 2015; 36:311-7. [DOI: 10.1111/cpf.12231] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 01/06/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Gilson Pires Dorneles
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
| | - Alana Schraiber Colato
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
| | - Simone Lunelli Galvão
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
| | - Thiago Rozales Ramis
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
| | - Jerri Luiz Ribeiro
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
| | - Pedro Roosevelt Romão
- Department of Basic Health Sciences; Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA); Porto Alegre Brazil
| | - Alessandra Peres
- Laboratory of Immunology and Exercise Physiology; Centro Universitário Metodista IPA; Porto Alegre Brazil
- Department of Basic Health Sciences; Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA); Porto Alegre Brazil
| |
Collapse
|
9
|
Del Duca Lima D, Dorneles GP, Fuhro MI, Monteiro M, de Souza MP, Ribeiro JL, Peres A. Effects Of Exercise In The Ccr5 And Nk Of Patients During Hemodialysis. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000495034.17338.6b] [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: 11/21/2022]
|
10
|
Dorneles GP, Ramis T, Galvão SL, da Silva Medeiros N, Romão PR, Colato AS, Ribeiro JL, Peres A. Effect Of Low-intensity Strength Training With Vascular Occlusion In Nk Cells And Ccr5 Chemoreceptor. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000496239.12218.49] [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: 11/21/2022]
|
11
|
Teixeira BC, Lopes AL, Macedo RCO, Correa CS, Ramis TR, Ribeiro JL, Reischak-Oliveira A. Inflammatory markers, endothelial function and cardiovascular risk. J Vasc Bras 2014. [DOI: 10.1590/jvb.2014.054] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The need to study cardiovascular diseases (CVD) has become more and more relevant as their prevalence has increased over the years. An intact endothelial wall is essential to vascular health. Certain factors are responsible for maintaining this tissue intact, including nitric oxide (NO), which provokes dilation of blood vessels in response to shear stress. Expression of the endothelial nitric oxide synthase (eNOS) enzyme, which produces nitric oxide in response to increases in blood flow, is of fundamental importance to maintenance of the vascular system. When this enzyme is inhibited, nitric oxide production is reduced, causing endothelial dysfunction. Since C-reactive protein inhibits production of nitric oxide by the eNOS enzyme, it is one of the causes of endothelial dysfunction and cardiovascular events. The objective of the present study was to review scientific articles in the literature related to the subject 'inflammatory markers and endothelial function'. A wide-ranging review of the current literature was conducted, using systematic analysis of bibliographic references indexed in PubMed, Scielo, Medline and LILACS database, for the years 1992 to 2013. The studies reviewed show that increases in inflammation causes reductions in NO and increases in cardiovascular events. Increased inflammation is associated with higher incidence of cardiovascular diseases.
Collapse
|
12
|
Fayh APT, Krause M, Rodrigues-Krause J, Ribeiro JL, Ribeiro JP, Friedman R, Moreira JCF, Reischak-Oliveira A. Effects of L-arginine supplementation on blood flow, oxidative stress status and exercise responses in young adults with uncomplicated type I diabetes. Eur J Nutr 2012; 52:975-83. [PMID: 22763798 DOI: 10.1007/s00394-012-0404-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 06/12/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIMS Vascular disease is the principal cause of death and disability in patients with diabetes, and endothelial dysfunction seems to be the major cause in its pathogenesis. Since L-arginine levels are diminished in conditions such as type 1 and type 2 diabetes, in this work we aimed to verify the effects of L-arginine supplementation (7 g/day) over the endothelial function and oxidative stress markers in young male adults with uncomplicated type 1 diabetes. We also investigated the influences of L-arginine administration on vascular/oxidative stress responses to an acute bout of exercise. METHODS Ten young adult male subjects with uncomplicated type 1 diabetes and twenty matched controls volunteered for this study. We analysed the influence of L-arginine supplementation (7 g/day during 1 week) over lower limb blood flow (using a venous occlusion plethysmography technique), oxidative stress marker (TBARS, Carbonyls), anti-oxidant parameters (uric acid and TRAP) and total tNOx in rest conditions and after a single bout of submaximal exercise (VO₂ at 10 % below the second ventilatory threshold). Data described as mean ± standard error (SE). Alpha level was P < 0.05. RESULTS Glycaemic control parameters were altered in type 1 diabetic subjects, such as HbA1c (5.5 ± 0.03 vs. 8.3 ± 0.4 %) and fasted glycaemia (94.8 ± 1.4 vs. 183 ± 19 mg/dL). Oxidative stress/damage markers (carbonyls and TBARS) were increased in the diabetic group, while uric acid was decreased. Rest lower limb blood flow was lower in type 1 diabetic subjects than in healthy controls (3.53 ± 0.35 vs. 2.66 ± 0.3 ml 100 ml⁻¹ min⁻¹). L-Arginine supplementation completely recovered basal blood flow to normal levels in type 1 diabetics' subjects (2.66 ± 0.3 to 4.74 ± 0.86 ml 100 ml⁻¹ min⁻¹) but did not interfere in any parameter of redox state or exercise. CONCLUSION Our findings highlight the importance of L-arginine for the improvement of vascular function in subjects with diabetes, indicating that L-arginine supplementation could be an essential tool for the treatment for the disease complications, at least in non-complicated diabetes. However, based on our data, it is not possible to draw conclusions regarding the mechanisms by which L-arginine therapy is inducing improvements on cardiovascular function, but this important issue requires further investigations.
Collapse
Affiliation(s)
- Ana Paula Trussardi Fayh
- Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Perez-Mato JM, Ribeiro JL, Petricek V, Aroyo MI. Magnetic superspace groups and symmetry constraints in incommensurate magnetic phases. J Phys Condens Matter 2012; 24:163201. [PMID: 22447842 DOI: 10.1088/0953-8984/24/16/163201] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Superspace symmetry has been for many years the standard approach for the analysis of non-magnetic modulated crystals because of its robust and efficient treatment of the structural constraints present in incommensurate phases. For incommensurate magnetic phases, this generalized symmetry formalism can play a similar role. In this context we review from a practical viewpoint the superspace formalism particularized to magnetic incommensurate phases. We analyse in detail the relation between the description using superspace symmetry and the representation method. Important general rules on the symmetry of magnetic incommensurate modulations with a single propagation vector are derived. The power and efficiency of the method is illustrated with various examples, including some multiferroic materials. We show that the concept of superspace symmetry provides a simple, efficient and systematic way to characterize the symmetry and rationalize the structural and physical properties of incommensurate magnetic materials. This is especially relevant when the properties of incommensurate multiferroics are investigated.
Collapse
Affiliation(s)
- J M Perez-Mato
- Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, UPV/EHU, Bilbao, Spain.
| | | | | | | |
Collapse
|
14
|
Ribeiro JL, Perez-Mato JM. Symmetry and magnetic field driven transitions in the 2D triangular lattice compound RbFe(MoO4)2. J Phys Condens Matter 2011; 23:446003. [PMID: 22005168 DOI: 10.1088/0953-8984/23/44/446003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The temperature versus magnetic field phase diagram of the 2D triangular lattice and multiferroic compound RbFe(MoO(4))(2) is analysed from the point of view of symmetry. The paramagnetic space group and its irreducible representations are used in order to obtain the magnetic symmetry of the possible modulated phases and characterize the restrictions imposed by this symmetry on the corresponding magnetic structures. Superspace symmetry is considered in the case of incommensurate phases. It is shown that the experimentally observed phases correspond to different isotropy subgroups originating in the same irreducible representation of the paramagnetic symmetry group. The relevant couplings between the primary transverse spin modulation and the electric polarization, the in-plane magnetization and the secondary longitudinal magnetic modulation are discussed. The mechanisms for the destabilization of the improper ferroelectric chiral phase and the origin of the different orientation of the spins with respect to the external field in the two collinear phases are analysed from a symmetry based perspective.
Collapse
Affiliation(s)
- J L Ribeiro
- Centro de Física da Universidade do Minho, 4710-057 Braga, Portugal.
| | | |
Collapse
|
15
|
Brunetto D, Ribeiro JL, Fayh APT. Efeitos do consumo agudo de cafeína sobre parâmetros metabólicos e de desempenho em indivíduos do sexo masculino. REV BRAS MED ESPORTE 2010. [DOI: 10.1590/s1517-86922010000300003] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
O objetivo deste estudo foi avaliar o efeito do consumo agudo de cafeína sobre a oxidação de lipídeos e desempenho durante o exercício aeróbico. Foram avaliados 15 indivíduos do sexo masculino, com idade média de 22,3 ± 2,7 anos, que realizaram teste de cargas progressivas em esteira rolante para determinação do consumo máximo de oxigênio (VO2máx) e limiares ventilatórios (LV). Cada voluntário realizou três testes submáximos na intensidade de 10% abaixo do segundo LV, sendo orientados a permanecer em exercício até a exaustão. Trinta minutos antes de cada teste submáximo, foram ingeridos 250ml de uma das bebidas compostas por: café com adoçante (CAD), café com açúcar (CA) e café descafeinado com adoçante (CD). Durante o exercício, os indivíduos foram monitorados pelo ergoespirômetro e frequencímetro. A oxidação de lipídeos foi predita pelo quociente respiratório (QR) durante o teste, e o desempenho foi verificado pelo tempo de exercício. Para comparar os resultados de QR e tempo de exercício entre os grupos, foi utilizado Anova fatorial, e considerou-se significância estatística um valor de p < 0,05. A média de VO2máx foi de 50,18 ± 9,9ml/kg/min. Com a ingestão de CAD, a média do QR foi de 0,98 ± 0,18 e o tempo médio em exercício foi de 24,1 ± 17,04 minutos. Com a ingestão de CA, a média do QR foi de 0,96 ± 0,2 e o tempo médio em exercício foi de 24,4 ± 17,8min. No teste com ingestão de CD, a média do QR foi de 1,01 ± 0,24 e a média do tempo em exercício foi de 20,6 ± 9,7min. Não houve diferença significativa entre os testes nos valores do QR e nem tempo de exercício (p = 0,697 e p = 0,598, respectivamente). A cafeína não aumentou a oxidação de lipídeos nem o desempenho de indivíduos jovens do sexo masculino.
Collapse
|
16
|
Ribeiro JL, Dekola T, Vieira LG. Orientation-switching transition and ferroelectricity in betaine arsenate. J Phys Condens Matter 2009; 21:325901. [PMID: 21693974 DOI: 10.1088/0953-8984/21/32/325901] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This paper reports a detailed investigation of the low frequency dielectric relaxation of betaine arsenate near the ferroelectric phase transition. The dielectric relaxation data are complemented with polarized infrared reflectivity data taken at low temperatures. The reported results allow us to identify several low frequency modes that clarify the complex behaviour of the dielectric response near the Curie temperature T(c2)≈120 K. It is suggested that the important slow dynamics observed is linked to the reorientation of the betaine molecular group. The roles of the different molecular units in the structural changes are briefly discussed and a new and more complex phase transition sequence is proposed.
Collapse
Affiliation(s)
- J L Ribeiro
- Centro de Física da Universidade do Minho, Campus de Gualtar, 4715-057 Braga, Portugal
| | | | | |
Collapse
|
17
|
Cunha GDS, Baptista RR, Ribeiro JL, Oliveira ARD. Método alternativo de determinação de limiar anaeróbio em remadores. Rev Bras Cineantropom Desempenho Hum 2008. [DOI: 10.5007/1980-0037.2008v10n4p367] [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: 10/26/2022] Open
|
18
|
Nepomuceno RSL, Tavares MB, Lemos JA, Griswold AR, Ribeiro JL, Balan A, Guimarães KS, Cai S, Burne RA, Ferreira LCS, Ferreira RCC. The oligopeptide (opp) gene cluster of Streptococcus mutans: identification, prevalence, and characterization. ACTA ACUST UNITED AC 2007; 22:277-84. [PMID: 17600541 DOI: 10.1111/j.1399-302x.2007.00368.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The Opp system is an ATP-binding cassette-type transporter formed by membrane-associated proteins required for the uptake of oligopeptides in bacteria. In gram-positive bacteria, the Opp system, and particularly the oligopeptide-binding protein (OppA), has been shown to be involved in different aspects of cell physiology, including intercellular communication and binding to host proteins. METHODS In the present study we began to investigate the Opp system of Streptococcus mutans, the main etiological agent of dental caries. RESULTS Five opp genes (oppABCDF) organized in a single operon were identified in the genome of the S. mutans UA159 strain. Amino acid sequence analyses showed that the S. mutans OppA is closely related to an ortholog found in Streptococcus agalactiae. Incubation of S. mutans UA159 cells with an anti-OppA-specific serum did not inhibit biofilm formation on polystyrene plates. Moreover, S. mutans UA159 derivatives carrying deletions on the oppA or oppB genes did not show significant growth impairment, increased sensitivity to aminopterin, or defective capacity to form biofilms on polystyrene wells in the presence or not of saliva. Remarkably, only two out of three laboratory strains and one out of seven clinical strains recovered from tooth decay processes harbored a copy of the oppA gene and expressed the OppA protein. CONCLUSION Collectively, these results indicate that, in contrast to other Streptococcus species, the S. mutans Opp system, and particularly the OppA protein, does not represent an important trait required for growth and colonization.
Collapse
Affiliation(s)
- R S L Nepomuceno
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, Cidade Universitária, SP, Brazil
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Ribeiro JL, Vieira LG, Tarroso Gomes I, Isakov D, de Matos Gomes E, Belsley M. The infrared dielectric tensor and axial dispersion in caesium L-malate monohydrate. J Phys Condens Matter 2007; 19:176225. [PMID: 21690970 DOI: 10.1088/0953-8984/19/17/176225] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Caesium hydrogen L-malate monohydrate (CsH(C(4)H(4)O(5))·H(2)O) is a novel coordination compound of L-malic acid and caesium that crystallizes into a monoclinic structure and shows promising properties for application as a piezoelectric, pyroelectric and electro-optic material. In the present work we use polarized infrared reflectivity measurements to investigate the dielectric tensor of the material in the spectral range of 40-4000 cm(-1). The use of a three-polarization technique allows us to obtain from the reflectivity data the parameters that characterize the B phonons with wavevectors varying in the plane perpendicular to the monoclinic axis. Consequently, we are able to monitor the frequency dependence of the orientation of the principal dielectric axes in this plane. Using these results we can evaluate the role of polar phonons in the low frequency dielectric response, characterize the dielectric tensor in the terahertz frequency range and describe the axial optical and dielectric dispersion over the frequency range investigated.
Collapse
Affiliation(s)
- J L Ribeiro
- Centro de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | | | | | | | | | | |
Collapse
|
20
|
Abstract
O objetivo do treinamento esportivo é o aumento e a melhora do desempenho físico. Quando a intensidade, a duração e a carga de trabalho diário dos exercícios são apropriadas, adaptações fisiológicas positivas ocorrem. Entretanto, existe uma linha muito tênue entre um ótimo desempenho e uma diminuição do mesmo em função do sobretreinamento. O sobretreinamento pode incluir lesão e fraqueza muscular, ativação das citosinas, mudanças hormonais e hematológicas, alterações no humor, depressão psicológica e problemas nutricionais que podem causar diminuição do apetite e diarréia. Muitos estudos sobre o sobretreinamento foram realizados num esforço de identificar suas causas, seus sintomas, hipóteses e marcadores que pudessem identificá-lo, mas este diagnóstico é muito difícil, pois os sintomas do sobretreinamento se confundem com os do pré-sobretreinamento e com os do treinamento normal, sendo que é difícil dissociá-los. No momento não existe um simples marcador que possa prever o sobretreinamento; dessa forma, a diminuição no desempenho físico ainda é considerada o padrão-ouro. Marcadores hormonais, bioquímicos, imunes, psicológicos e o estresse oxidativo podem dar informações relevantes para um diagnóstico preciso e confiável para o sobretreinamento.
Collapse
|
21
|
Ribeiro JL, Vieira LG, Tarroso Gomes I, Agostinho Moreira J, Almeida A, Chaves MR, Santos ML, Alferes PP. Infrared reflectivity study of the phase transitions in sodium ammonium sulfate dihydrate. J Phys Condens Matter 2006; 18:7761-7778. [PMID: 21690886 DOI: 10.1088/0953-8984/18/32/023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work reports a detailed infrared reflectivity investigation of the phase transitions in single crystals of sodium ammonium sulfate dihydrate (SASD). The polarized reflectivity spectra allow us to follow the temperature dependence of the polar vibrational modes and detect the critical behaviour of the vibrational parameters through the two low temperature structural phase transitions observed in the compound. The results obtained show that the mechanism of the transitions in SASD is complex, involving a strong coupling between pseudo-spins and phonons. In the paraelectric phase, the driving mechanism of the first phase transition (T(c1) = 95 K) appears to be related to a relaxation with a characteristic frequency that is much lower than the phonon frequencies. In the temperature range corresponding to the first ferroelectric phase (T(c1)>T>T(c2) = 79 K), the dynamics of the lattice change considerably and the parameters characterizing several vibrational modes display anomalous temperature dependences. The second phase transition occurring at T(c2) is marked by an important and discontinuous change of the spectral shape, indicating that a considerable lattice distortion is involved.
Collapse
Affiliation(s)
- J L Ribeiro
- Grupo FCD-Centro de Física da Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Ribeiro JL, de Castro BOSD, Rosa CS, Baptista RR, Oliveira AR. Heart rate and blood lactate responses to changquan and daoshu forms of modern wushu. J Sports Sci Med 2006; 5:1-4. [PMID: 24357970 PMCID: PMC3863925] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The development of specific training designed to enhance physiological aspects of performance relies heavily on the availability of accurate and validity physiological data. In the combat sport of Wushu, katas are used to develop aerobic fitness. It is arguably important to assess and monitor heart rate (HR) and lactate (La) responses when designing effective training programs. The aim of this pilot study was to investigate heart rate and lactate responses to forms execution among Wushu combatants. Male elite modern Wushu athletes (n = 4) from a South Brazilian regional team participated in the study. Athletes were aged 22.5 ± 2.08 years old and had at least eight years of Wushu experience. Athletes carried out the Changquan and Daoshu forms in random order, HR and La were measured pre- and post-exercise. Results indicate that HR was 176 ± 3 and 176 ± 2 bpm and La was 4.38 ± 1.3 and 5.15 ± 1.07 mmol·l(-1) for Changquan and Daoshu forms, respectively. There were no significantly differences in HR and La between the two forms. HR values represent 89.2 ± 1.1 and 89.1 ± 1.8% of age-predicted maximal heart rate and lactate was near of 4 mmol·l(-1) point. In conclusion, training programs to Wushu combatants could target the range of physiological values cited above with no differences between two forms. Key PointsHeart rate and lactate responses are not significantly different between Changquan and Daoshu forms for Wushu combatants.The Wushu katas could be used to develop aerobic fitness.
Collapse
Affiliation(s)
- Jerri Luiz Ribeiro
- EsEF/UFRGS Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | - Caio S Rosa
- EsEF/UFRGS Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael R Baptista
- EsEF/UFRGS Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alvaro R Oliveira
- EsEF/UFRGS Physical Education School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| |
Collapse
|
23
|
Abstract
In 8 trained subjects (T) and 9 untrained subjects (UT), lipid peroxidation (LPO), total antioxidant capacity (TRAP), superoxide dismutase, catalase, and glutathione peroxidase (GPx) activities were measured in the blood before and after three different intensities of exercise on the treadmill, determined from ventilatory threshold and maximal oxygen uptake data, obtained from a maximal aerobic power test. In plasma, LPO decreased from 3589 ± 193 to 3274 ± 223 cps•mg Hb−1(p < 0.05), and TRAP increased from 304 ± 45 to 384 ± 57 µmol•L−1trolox (p < 0.05) after high intensity exercise in T. GPx activity increased in the T group as compared to the UT group, after exercise in moderate (25.90 ± 3.79 to 15.05 ± 3.23 nM•min−1•mg protein−1) and high (21.75 ± 4.91 to 12.1 ± 2.46 nM•min−1•mg protein−1) intensities (p < 0.05). Superoxide dismutase activity increased after exercise at low (8.35 ± 0.85 to 9.23 ± 1.03 U SOD•mg protein−1) and moderate (8.89 ± 0.98 to 10.44 ± 0.86 U SOD•mg protein−1) intensity in UT (p < 0.05). There were no changes in catalase activity. These findings indicate that exercise in this model did not increase lipid peroxidation, probably because of the alterations in TRAP and enzymatic antioxidants. Key words: free radicals, lipid peroxidation, erythrocytes, antioxidant enzymes, exercise
Collapse
Affiliation(s)
- Cláudia Dornelles Schneider
- Lab de Pesquisa do Exercício, Escola de Educacção Física, Univ Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | | | | |
Collapse
|
24
|
Vieira LG, Hernandez O, Ribeiro JL, Cousson A, Kiat JM, Chaves MR, Almeida A, Klöpperpieper A. Structure of the X-phase of 38% brominated betaine calcium chloride dihydrate. Acta Crystallogr Sect B 2001; 57:296-302. [PMID: 11373387 DOI: 10.1107/s0108768101001525] [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] [Subscribe] [Scholar Register] [Received: 09/28/2000] [Accepted: 01/19/2001] [Indexed: 11/11/2022]
Abstract
The structures of the high- and low-temperature phases of 38% brominated BCCD [betaine (trimethylammonioacetate) calcium chloride dihydrate], the latter being known as the X-phase, have been determined by single-crystal neutron diffraction at 295 and 20 K, respectively. The symmetry of the X-phase is described by the P212121 space group. The distortion with respect to the high-temperature Pnma phase is characterized by anti-symmetric displacements of the betaine molecules as well as of the Ca octahedra. On the basis of a symmetry-mode analysis, we propose an interpretation of the direct phase transition that occurs around 80 K between these two phases.
Collapse
Affiliation(s)
- L G Vieira
- Departamento de Física, Universidade do Minho, 4709 Braga codex, Portugal
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Machado H, Pereira MJ, Orfão J, Mendonça D, Ribeiro JL. [Changes in cognitive function performance in patients after anesthesia]. ACTA MEDICA PORT 2000; 13:85-92. [PMID: 11026145] [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: 02/17/2023]
Abstract
This study evaluates the mental performance of 112 patients (ASA grade 1 and 2) submitted to Orthopaedic, Urologic, Gynecologic, General and ENT surgery in Santo Antonio General Hospital. These patients received different types of anaesthesia: General Balanced Anaesthesia--GBA (n = 80), Total Intravenous Anaesthesia--TIVA (n = 17) and Regional Anaesthesia--RA (n = 15). Cognitive function was tested using the mini mental state test (MMS), which was done 24 hours before and 24 hours after anaesthesia. There was a high correlation between pre and postoperative MMS scores (R = 0.94). Patients in the GBA group show a significant (p < 0.001) decrease in cognitive performance 24 hours after surgery in comparison to the preoperative test. No differences were observed between the pre and postoperative MMS tests in the TIVA and RA groups.
Collapse
Affiliation(s)
- H Machado
- Serviço de Anestesiologia, Hospital Geral de Santo António, Porto
| | | | | | | | | |
Collapse
|
26
|
Abstract
OBJECTIVES To develop an outcome measure of QOL (quality of life) for the Portuguese population; describe QOL in epileptics; analyse how QOL is affected by epilepsy and analyse how QOL is affected by patients' characteristics. PATIENTS AND METHODS Study of a consecutive sample of 92 epileptics from an outpatient clinic, men and women, aged 15-65, having the basic education level. Firm diagnosis of epilepsy (with or without seizures) without other illness. A questionnaire based on ESI-55 and Health Insurance Experiment Short-Forms was used. Principal component analysis (orthogonal varimax) showed a solution explaining 55.6 of total variance. After the inspection, the 33 items were grouped into 5 sub-scales (dimensions). RESULTS Results showed that QOL was poor for people with partial seizures. The best scores were found on patients now free from seizures. CONCLUSION The QOL measure is sensitive to cultural differences, demographic and disease variables which could explain the results found.
Collapse
Affiliation(s)
- J L Ribeiro
- Faculdade de Psicologia e de Ciências da Educação--Universidade do Porto, Portugal
| | | | | |
Collapse
|
27
|
Chaves MR, Almeida A, Tolédano JC, Schneck J, Kiat JM, Schwarz W, Ribeiro JL, Klöpperpieper A, Albers J, Müser HE. Effect of electric fields on modulated structure of deuterated betaine calcium chloride dihydrate. Phys Rev B Condens Matter 1993; 48:13318-13325. [PMID: 10007724 DOI: 10.1103/physrevb.48.13318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
28
|
Almeida A, Chaves MR, Kiat JM, Schneck J, Schwarz W, Tolédano JC, Ribeiro JL, Klöpperpieper A, Müser HE, Albers J. Elastic-neutron-scattering study of the devil's-staircase behavior in deuterated betaine calcium chloride dihydrate. Phys Rev B Condens Matter 1992; 45:9576-9582. [PMID: 10000839 DOI: 10.1103/physrevb.45.9576] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
29
|
Chaves MR, Almeida A, Ribeiro JL, Müser HE, Albers J, Klöpperpieper A. Incommensurate phases in betaine calcium chloride dihydrate. Phys Rev B Condens Matter 1991; 43:11162-11165. [PMID: 9996853 DOI: 10.1103/physrevb.43.11162] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
30
|
Ribeiro JL, Tolédano JC, Chaves MR, Almeida A, Müser HE, Albers J, Klöpperpieper A. Phenomenological model for the phase-transition sequence in betaine calcium chloride dihydrate. Phys Rev B Condens Matter 1990; 41:2343-2347. [PMID: 9993970 DOI: 10.1103/physrevb.41.2343] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
31
|
Ribeiro JL, Chaves MR, Almeida A, Albers J, Klöpperpieper A, Müser HE. Pyroelectric detection of high-order commensurate phases with a narrow range of stability in betaine calcium chloride dihydrate. Phys Rev B Condens Matter 1989; 39:12320-12323. [PMID: 9948079 DOI: 10.1103/physrevb.39.12320] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|