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Machado ABC, Teruya KI, Friedman R, Weydmann GJ, Remor E, Bizarro L. Gender differences in the pathway of childhood trauma, impulsivity and adult eating behaviour: a cross-sectional study. J Child Adolesc Ment Health 2024:1-13. [PMID: 38638062 DOI: 10.2989/17280583.2023.2293904] [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: 04/20/2024]
Abstract
Objective: The current cross-sectional study aimed to examine the association between childhood trauma, impulsivity, binge eating symptoms, and body mass index (BMI) in a sample of males and females. We also aimed to investigate the indirect association of childhood trauma with binge eating through impulsivity while controlling for BMI.Method: Participants were 410 young adults (mean age = 20.9 years, range 18-24; female = 73.9%) who completed online measures of childhood trauma, impulsivity, binge eating symptoms, and self-reported height and weight. Mediation models were tested using multi-group structural equation modelling.Results: Childhood trauma and impulsivity were associated with an increased risk of binge eating symptoms in females but not males, corroborating previous studies. There was a significant difference in the binge eating symptoms index between sexes, but not regarding the index of childhood trauma and impulsivity. Additionally, adverse childhood experiences were associated with impulsivity and the association of childhood trauma with binge eating was mediated by impulsivity in the female sample.Conclusions: Our results suggest sex-dependent patterns and risk factors that may impact binge eating symptoms. The implications of our results suggest that impulsivity might be a vulnerability factor for binge eating, especially for females.
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Affiliation(s)
- Antônio Bonfada Collares Machado
- Graduate Program in Psychology, Department of Developmental and Personality Psychology, Institute of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Katia Irie Teruya
- Graduate Program in Psychology, Department of Developmental and Personality Psychology, Institute of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rogério Friedman
- Programa de Pós-Graduação em Endocrinologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Division of Endocrinology and Metabolism, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Gibson Juliano Weydmann
- Graduate Program in Psychology, Department of Developmental and Personality Psychology, Institute of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Eduardo Remor
- Graduate Program in Psychology, Department of Developmental and Personality Psychology, Institute of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Lisiane Bizarro
- Graduate Program in Psychology, Department of Developmental and Personality Psychology, Institute of Psychology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Weydmann G, Palmieri I, Simões RAG, Centurion Cabral JC, Eckhardt J, Tavares P, Moro C, Alves P, Buchmann S, Schmidt E, Friedman R, Bizarro L. Switching to online: Testing the validity of supervised remote testing for online reinforcement learning experiments. Behav Res Methods 2023; 55:3645-3657. [PMID: 36220950 PMCID: PMC9552715 DOI: 10.3758/s13428-022-01982-6] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2022] [Indexed: 11/08/2022]
Abstract
Online experiments are an alternative for researchers interested in conducting behavioral research outside the laboratory. However, an online assessment might become a challenge when long and complex experiments need to be conducted in a specific order or with supervision from a researcher. The aim of this study was to test the computational validity and the feasibility of a remote and synchronous reinforcement learning (RL) experiment conducted during the social-distancing measures imposed by the pandemic. An additional feature of this study was to describe how a behavioral experiment originally created to be conducted in-person was transformed into an online supervised remote experiment. Open-source software was used to collect data, conduct statistical analysis, and do computational modeling. Python codes were created to replicate computational models that simulate the effect of working memory (WM) load over RL performance. Our behavioral results indicated that we were able to replicate remotely and with a modified behavioral task the effects of working memory (WM) load over RL performance observed in previous studies with in-person assessments. Our computational analyses using Python code also captured the effects of WM load over RL as expected, which suggests that the algorithms and optimization methods were reliable in their ability to reproduce behavior. The behavioral and computational validation shown in this study and the detailed description of the supervised remote testing may be useful for researchers interested in conducting long and complex experiments online.
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Affiliation(s)
- Gibson Weydmann
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
| | - Igor Palmieri
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Reinaldo A G Simões
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - João C Centurion Cabral
- Instituto de Ciências Humanas e da Informação, Universidade Federal do Rio Grande (FURG), Rio Grande, Brazil
| | - Joseane Eckhardt
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Patrice Tavares
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Candice Moro
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Paulina Alves
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Samara Buchmann
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Eduardo Schmidt
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Rogério Friedman
- Programa de Pós-Graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lisiane Bizarro
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Borges Russo MK, Kowalewski LS, da Natividade GR, de Lemos Muller CH, Schroeder HT, Bock PM, Ayres LR, Cardoso BU, Zanotto C, Schein JT, Rech TH, Crispim D, Canani LH, Friedman R, Leitão CB, Gerchman F, Krause M. Elevated Extracellular HSP72 and Blunted Heat Shock Response in Severe COVID-19 Patients. Biomolecules 2022; 12:biom12101374. [PMID: 36291584 PMCID: PMC9599720 DOI: 10.3390/biom12101374] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Aims: We hypothesized that critically ill patients with SARS-CoV-2 infection and insulin resistance would present a reduced Heat Shock Response (HSR), which is a pathway involved in proteostasis and anti-inflammation, subsequently leading to worse outcomes and higher inflammation. In this work we aimed: (i) to measure the concentration of extracellular HSP72 (eHSP72) in patients with severe COVID-19 and in comparison with noninfected patients; (ii) to compare the HSR between critically ill patients with COVID-19 (with and without diabetes); and (iii) to compare the HSR in these patients with noninfected individuals. Methods: Sixty critically ill adults with acute respiratory failure with SARS-CoV-2, with or without diabetes, were selected. Noninfected subjects were included for comparison (healthy, n = 19 and patients with diabetes, n = 22). Blood samples were collected to measure metabolism (glucose and HbA1c); oxidative stress (lypoperoxidation and carbonyls); cytokine profile (IL-10 and TNF); eHSP72; and the HSR (in vitro). Results: Patients with severe COVID-19 presented higher plasma eHSP72 compared with healthy individuals and noninfected patients with diabetes. Despite the high level of plasma cytokines, no differences were found between critically ill patients with COVID-19 with or without diabetes. Critically ill patients, when compared to noninfected, presented a blunted HSR. Oxidative stress markers followed the same pattern. No differences in the HSR (extracellular/intracellular level) were found between critically ill patients, with or without diabetes. Conclusions: We demonstrated that patients with severe COVID-19 have elevated plasma eHSP72 and that their HSR is blunted, regardless of the presence of diabetes. These results might explain the uncontrolled inflammation and also provide insights on the increased risk in developing type 2 diabetes after SARS-CoV-2 infection.
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Affiliation(s)
- Mariana Kras Borges Russo
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Lucas Stahlhöfer Kowalewski
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Gabriella Richter da Natividade
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Carlos Henrique de Lemos Muller
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Helena Trevisan Schroeder
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Patrícia Martins Bock
- Faculdades Integradas de Taquara, Taquara 95612-150, RS, Brazil
- Department of Pharmacology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Layane Ramos Ayres
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Bernardo Urbano Cardoso
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Caroline Zanotto
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Julia Tsao Schein
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Tatiana Helena Rech
- Intensive Care Unit, Hospital de Clinicas de Porto Alegre, Porto Alegre 90035-903, RS, Brazil
| | - Daisy Crispim
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Luis Henrique Canani
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Rogério Friedman
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Cristiane Bauermann Leitão
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Fernando Gerchman
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Post-Graduate Program in Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
| | - Mauricio Krause
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 91509-900, RS, Brazil
- Correspondence: ; Tel.: +55-(51)-33082065
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Dias de Castro Heredia ML, Weydmann G, Kops NL, Martins GP, Bizarro L, Friedman R. Conscious and pre-conscious attentional bias to food images in patients subjected to Roux-en-Y gastric bypass. Appetite 2022; 175:106057. [PMID: 35460810 DOI: 10.1016/j.appet.2022.106057] [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] [Received: 11/10/2020] [Revised: 03/30/2022] [Accepted: 04/14/2022] [Indexed: 11/16/2022]
Abstract
Attentional bias (AB) to food after bariatric surgery might be a cognitive marker for weight regain. The visual probe task (VPT) is commonly used to capture AB at automatic, pre-conscious, and conscious orientation of attention. The aim of this study was to investigate how the preoperative BMI of patients submitted to Roux-en-Y gastric bypass (RYGB) impacts AB to food. We assessed patients who had preoperative BMI>50 (n = 28) or preoperative BMI<50 (n = 31) months after the RYGB procedure. Participants underwent clinical, psychological, and VPT evaluations. In VPT, pairs of food and matching non-food images were shown for 100 ms, 500 ms or 2000 ms and AB for food was assessed for each exposure time. A significant AB to food was observed at 2000 ms for all patients in this study, suggesting that the overall sample were consciously orienting their attention toward food cues after surgery, a finding that might be relevant for understanding weight control. When groups with preoperative BMI higher and lower than 50 kg/m2 were compared, a significant difference on AB to food stimuli at 500 ms was observed, controlling for excess weight lost since surgery and postoperative time. Subjects with preoperative BMI>50 had a positive and reliable AB to food while subjects with preoperative BMI<50 had a negative AB. This suggests that food stimuli have a higher incentive salience even after surgery for those with BMI>50, which might explain why subjects with higher preoperative weight have higher risks for weight regain. These results may indicate that RYGB can impact incentive salience for food cues in a differential manner, increasing conscious AB in all patients and decreasing pre-conscious AB only in those with BMI<50 kg/m2.
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Affiliation(s)
| | - Gibson Weydmann
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Natália Luiza Kops
- Programa de Pós-Graduação em Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Gianluca Pioli Martins
- Programa de Pós-Graduação em Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lisiane Bizarro
- Programa de Pós-Graduação em Psicologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Rogério Friedman
- Programa de Pós-Graduação em Endocrinologia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Division of Endocrinology and Metabolism, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
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Friedman R. A new movie is about to premiere in nearby theaters. The way we see and treat obesity is bound to change. Arch Endocrinol Metab 2022; 66:135-136. [PMID: 35482450 PMCID: PMC9832893 DOI: 10.20945/2359-3997000000466] [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] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Rogério Friedman
- Departamento de Medicina Interna, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil.,Serviço de Endocrinologia e Metabologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brasil,
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Pollack B, Popiel P, Drugge E, Bibi M, Pollack S, Friedman R, Alishahian L, Bielawski A, Sacks A, Lebron K, Phillips D, Rubino S, Toaff M, Khan R, Khan E, Marioutina M, Gorgy M, Grimes C. Impact of permanent versus absorbable suture in vaginal suspension surgery for apical pelvic organ prolapse. Am J Obstet Gynecol 2022. [DOI: 10.1016/j.ajog.2021.12.135] [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: 11/24/2022]
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Vogt ÉL, Von Dentz MC, Rocha DS, Argenta Model JF, Kowalewski LS, de Souza SK, Girelli VDO, de Bittencourt PIH, Friedman R, Krause M, Vinagre AS. Metabolic and Molecular Subacute Effects of a Single Moderate-Intensity Exercise Bout, Performed in the Fasted State, in Obese Male Rats. Int J Environ Res Public Health 2021; 18:ijerph18147543. [PMID: 34299993 PMCID: PMC8307452 DOI: 10.3390/ijerph18147543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 01/13/2023]
Abstract
Introduction and objectives: Obesity represents a major global public health problem. Its etiology is multifactorial and includes poor dietary habits, such as hypercaloric and hyperlipidic diets (HFDs), physical inactivity, and genetic factors. Regular exercise is, per se, a tool for the treatment and prevention of obesity, and recent studies suggest that the beneficial effects of exercise can be potentiated by the fasting state, thus potentially promoting additional effects. Despite the significant number of studies showing results that corroborate such hypothesis, very few have evaluated the effects of fasted-state exercise in overweight/obese populations. Therefore, the aim of this study was to evaluate the subacute effects (12 h after conclusion) of a single moderate-intensity exercise bout, performed in either a fed or an 8 h fasted state, on serum profile, substrate-content and heat shock pathway–related muscle protein immunocontent in obese male rats. Methods: Male Wistar rats received a modified high-fat diet for 12 weeks to induce obesity and insulin resistance. The animals were allocated to four groups: fed rest (FER), fed exercise (FEE), fasted rest (FAR) and fasted exercise (FAE). The exercise protocol was a 30 min session on a treadmill, with an intensity of 60% of VO2max. The duration of the fasting period was 8 h prior to the exercise session. After a 12 h recovery, the animals were killed and metabolic parameters of blood, liver, heart, gastrocnemius and soleus muscles were evaluated, as well as SIRT1 and HSP70 immunocontent in the muscles. Results: HFD induced obesity and insulin resistance. Soleus glycogen concentration decreased in the fasted groups and hepatic glycogen decreased in the fed exercise group. The combination of exercise and fasting promoted a decreased concentration of serum total cholesterol and triglycerides. In the heart, combination fasting plus exercise was able to decrease triglycerides to control levels. In the soleus muscle, both fasting and fasting plus exercise were able to decrease triglyceride concentrations. In addition, heat shock protein 70 and sirtuin 1 immunocontent increased after exercise in the gastrocnemius and soleus muscles. Conclusions: An acute bout of moderate intensity aerobic exercise, when realized in fasting, may induce, in obese rats with metabolic dysfunctions, beneficial adaptations to their health, such as better biochemical and molecular adaptations that last for at least 12 h. Considering the fact that overweight/obese populations present an increased risk of cardiovascular events/diseases, significant reductions in such plasma markers of lipid metabolism are an important achievement for these populations.
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Affiliation(s)
- Éverton Lopes Vogt
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Maiza Cristina Von Dentz
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Débora Santos Rocha
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Jorge Felipe Argenta Model
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Lucas Stahlhöfer Kowalewski
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 90050-170, RS, Brazil; (L.S.K.); (P.I.H.d.B.J.)
| | - Samir Khal de Souza
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Vitória de Oliveira Girelli
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
| | - Paulo Ivo Homem de Bittencourt
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 90050-170, RS, Brazil; (L.S.K.); (P.I.H.d.B.J.)
| | - Rogério Friedman
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre 90040-060, RS, Brazil;
- Graduate Program in Medical Sciences: Endocrinology, Department of Internal Medicine, Faculty of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-903, RS, Brazil
| | - Mauricio Krause
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre 90050-170, RS, Brazil; (L.S.K.); (P.I.H.d.B.J.)
- Correspondence: ; Tel.: +55-51-33083623
| | - Anapaula Sommer Vinagre
- Department of Physiology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90050-170, RS, Brazil; (É.L.V.); (M.C.V.D.); (D.S.R.); (J.F.A.M.); (S.K.d.S.); (V.d.O.G.); (A.S.V.)
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de Oliveira MS, Rodrigues M, Rossoni EA, Sortica DA, Rheinheimer J, Moehlecke M, Heredia MLDC, Horvath JDC, Kops NL, Trindade MRM, Viana LV, Leitão CB, Friedman R, Crispim D, de Souza BM. -866G/A and Ins/Del polymorphisms in UCP2 gene are associated with reduced short-term weight loss in patients who underwent Roux-en-Y gastric bypass. Surg Obes Relat Dis 2021; 17:1263-1270. [PMID: 33941479 DOI: 10.1016/j.soard.2021.03.032] [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] [Received: 09/22/2020] [Revised: 03/05/2021] [Accepted: 03/27/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Uncoupling protein 2 (UCP2) plays an important role in energy expenditure regulation. Previous studies have associated the common -866G/A (rs659366) and Ins/Del polymorphisms in the UCP2 gene with metabolic and obesity-related phenotypes. However, it is still unclear whether these polymorphisms influence weight loss after bariatric surgery. OBJECTIVES To investigate whether UCP2 -866G/A and Ins/Del polymorphisms are associated with weight loss outcomes after bariatric surgery. SETTING Longitudinal study in a university hospital. METHODS We retrospectively evaluated 186 patients who underwent Roux-en-Y gastric bypass (RYGB) surgery for clinical and laboratory characteristics in the preoperative period, 6, 12, and 18 months after RYGB. The -866G/A (rs659366) polymorphism was genotyped using real-time PCR, while the Ins/Del polymorphism was genotyped by direct separation of PCR products in 2.5% agarose gels. RESULTS Patients with the -866A/A genotype showed higher body mass index (BMI) after 6, 12, and 18 months of surgery and excess body weight after 6 and 12 months compared with G/G patients. They also showed lower excess weight loss (EWL%) after 6 and 12 months of surgery. Ins allele carriers (Ins/Ins + Ins/Del) had lower delta (Δ) BMI 12 months after surgery compared with Del/Del patients. Accordingly, patients carrying haplotypes with ≥2 risk alleles of these polymorphisms had higher BMI and excess weight and lower EWL% during follow-up. CONCLUSION UCP2 -866A/A genotype is associated with higher BMI and excess weight and lower EWL% during an 18-month follow-up of patients who underwent RYGB, while the Ins allele seems to be associated with lower ΔBMI 12 months after surgery. Further studies are needed to confirm the associations of the -866G/A and Ins/Del polymorphisms with weight loss after bariatric surgery.
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Affiliation(s)
- Mayara S de Oliveira
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Michelle Rodrigues
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Elis A Rossoni
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Denise A Sortica
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Jakeline Rheinheimer
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Milene Moehlecke
- Department of Endocrinology, Faculdade de Medicina, Universidade Luterana do Brasil, Canoas, Brazil
| | | | | | - Natalia L Kops
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Manoel R M Trindade
- Digestive Surgery Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Luciana V Viana
- Digestive Surgery Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Cristiane B Leitão
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Rogério Friedman
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Daisy Crispim
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Bianca M de Souza
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil; Faculty of Medicine, Graduate Program of Medical Sciences: Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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Lopes AL, Macedo RCO, Krüger RL, Friedman R, Carteri RB, Reischak-Oliveira Á. Fasted exercise does not improve postprandial lipemia responses to different meals in lean and obese subjects: A crossover, randomized clinical trial. Clin Nutr ESPEN 2021; 41:160-167. [PMID: 33487260 DOI: 10.1016/j.clnesp.2020.11.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/02/2020] [Revised: 11/12/2020] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Persistent episodes of postprandial hyperlipemia (PPL) and hyperglycemia (PPG) are considered risk factors for coronary heart disease (CHD) and premature death; whereas physical exercise improves lipid profile and glucose tolerance thus decreasing cardiovascular risks. OBJECTIVE To investigate the effects of low-intensity fasted aerobic exercise on the magnitude of the PPL and PPG responses to meals with different energy content, in normal and obese subjects. METHODS The study used a randomized crossover design. Twenty-one male (Lean: n = 9, BMI: 24.3 ± 2.2; and obese: n = 12, BMI 32.31 ± 2.1) volunteers aged 20-30 years, performed three interventions, separated by 7 days each: (i) 45 min at rest and isocaloric high-fat meal (60% lipids, 30% carbohydrates and 10% protein); (ii) fasted low-intensity aerobic exercise (50% VO2max) for 45 min followed by an isocaloric or (iii) calorie deficit high-fat meal. Subjects were serially assessed for blood triglycerides, and glucose levels. RESULTS AND CONCLUSIONS Low-intensity fasted aerobic exercise had no acute effect on PPL in lean and obese subjects. Glucose concentrations were reduced only in lean subjects. There is a significant difference in PPL values when comparing lean to obese subjects, implying that the nutritional status influences lipid and carbohydrate after fasted low-intensity aerobic exercise. Registered under ClinicalTrials.gov Identifier no. NCT00929890.
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Affiliation(s)
- André Luiz Lopes
- Exercise Research Laboratory (LAPEX), School of Physical Education (ESEF), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil; University of Santa Cruz Do Sul, Santa Cruz, RS, Brazil
| | - Rodrigo Cauduro Oliveira Macedo
- Exercise Research Laboratory (LAPEX), School of Physical Education (ESEF), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil; University of Santa Cruz Do Sul, Santa Cruz, RS, Brazil
| | - Renata Lopes Krüger
- Exercise Research Laboratory (LAPEX), School of Physical Education (ESEF), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil; University of Calgary, Alberta, Canada
| | - Rogério Friedman
- School of Medicine, Federal University of Rio Grande Do Sul (UFRGS) and Porto Alegre Clínicas Hospital (HCPA), Porto Alegre, RS, Brazil
| | - Randhall Bruce Carteri
- Exercise Research Laboratory (LAPEX), School of Physical Education (ESEF), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil; Centro Universitário Metodista - IPA, Porto Alegre, RS, Brazil.
| | - Álvaro Reischak-Oliveira
- Exercise Research Laboratory (LAPEX), School of Physical Education (ESEF), Federal University of Rio Grande Do Sul (UFRGS), Porto Alegre, RS, Brazil
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Kops NL, Vivan MA, Fülber ER, Fleuri M, Fagundes J, Friedman R. Preoperative Binge Eating and Weight Loss After Bariatric Surgery: A Systematic Review and Meta-analysis. Obes Surg 2020; 31:1239-1248. [PMID: 33219919 DOI: 10.1007/s11695-020-05124-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 07/11/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Several studies have investigated if bariatric surgery candidates with binge eating disorder (BED) are at risk for suboptimal postoperative weight loss. The aim of this systematic review with meta-analysis was to evaluate the association between binge eating diagnosed preoperatively and weight loss after bariatric surgery. METHODS MEDLINE, EMBASE, CENTRAL, LILACS, and other specialized databases were searched on August 2020. Clinical trials and observational studies including individuals who had undergone any type of bariatric surgical treatment with preoperative evaluation of BED and at least one postoperative measure of weight were initially selected. Four reviewers independently screened for eligibility. The mean difference was calculated using the random-effects model. RESULTS Nineteen studies, comprising 3223 participants (80.25% women; median age 41 years), met the inclusion criteria for meta-analysis. At 6 months postoperative, the percentage of total weight loss (%TWL) was not significantly different between BED and non-BED groups [6 studies, 914 participants: - 0.75% (95% CI, - 2.79 to 1.29; I2 = 0%)], even when analyzing only those three studies that included gold standard assessment tools. No significant differences were found at 12, 24, 36, or 60 months. CONCLUSIONS Pre-bariatric BED seems to have little or no influence on weight loss after surgery. However, many questions remain unanswered because of the use of different measures across studies. The heterogeneity among studies emphasizes the importance of investigators using the same assessment measures.
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Affiliation(s)
- Natália Luiza Kops
- Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, 90560-030, Brazil.
| | - Manoela Astolfi Vivan
- Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Elisa Ruiz Fülber
- Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Marco Fleuri
- Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Julia Fagundes
- Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
| | - Rogério Friedman
- Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, 90560-030, Brazil.,Endocrinology Division, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Rio Grande do Sul, Brazil
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Green RJ, Hockman M, Friedman R, Van Niekerk A, Feldman C, Vardas E, Quitter C, Els C, Van Bruwaene L, Nanan A, Peter J, Seedat RY, Levin M, Bateman On Behalf Of The South African Allergic Rhinitis Working Group Saarwg C. Chronic rhinitis in South Africa - more than just allergy! S Afr Med J 2020; 110:594-598. [PMID: 32880327 DOI: 10.7196/samj.2020.v110i7.14553] [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] [Received: 07/07/2020] [Indexed: 06/11/2023] Open
Abstract
Chronic rhinitis is a troublesome condition for sufferers. It is tempting to label all patients with chronic nasal symptoms as having allergic rhinitis (AR), but many such patients have other causes of chronic rhinitis that need a specific diagnosis and management strategy. Even when the patient fully fits the definition of AR, their condition will be best served by combining medication with ongoing patient education.
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Affiliation(s)
- R J Green
- Department of Paediatrics and Child Health, School of Medicine, Faculty of Health Sciences, University of Pretoria, South Africa.
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Kops NL, Vivan MA, de Castro MLD, Horvath JDC, Costa FS, Friedman R. Binge eating scores pre-bariatric surgery and subsequent weight loss: A prospective, 5 years follow-up study. Clin Nutr ESPEN 2020; 38:146-152. [PMID: 32690149 DOI: 10.1016/j.clnesp.2020.05.013] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/30/2020] [Accepted: 05/13/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS To compare groups of bariatric patients with preoperative scores of Binge Eating Scale (BES) above and below the clinical cut off value on weight outcomes up to 60 months following surgery. METHODS This is a prospective observational study involving 108 Brazilian patients (follow-up rate: 48.1%) operated by Roux-en-Y gastric bypass. In the preoperative period, they were clinically evaluated, and BES was applied. Based on the scores, patients were categorized as high or low according to established cut off 17 for binge eaters. Follow-up weight loss was obtained (3, 6, 12, 24, 36, 48, and 60 months) using data from medical records. The percentage of total weight loss (%TWL) was examined by generalized linear model. RESULTS 41.7% of patients had BES scores higher than 17 at baseline. Weight loss was significant up to 12 months. The greatest weight loss was at 24 months of follow-up, ranging from 2.7 to 110.4 kg (mean 42.9 ± 17.8 kg). In the short postoperative period (3, 24, and 36 months), %TWL was significantly different between groups. At 24 months, patients with higher scores lost more %TWL than those with lower scores (35.1 ± 0.8% vs 31.6 ± 0.7%, p = 0.029). However, this difference was not fount at 60 months postoperatively (mean 28.9 ± 9.6%). In a multivariate analysis, the presence of depression, age, and BES score were not associated with %TWL at 24 and 60 months. CONCLUSIONS The results suggest that preoperative BES scores point to a similar weight loss after bariatric surgery. Further studies with long-term follow-up are necessary to evaluate this finding.
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Affiliation(s)
- Natalia Luiza Kops
- Post-Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Hospital Moinhos de Vento, Porto Alegre, RS, Brazil.
| | | | - Mariana L Dias de Castro
- Post-Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
| | - Jaqueline D Correia Horvath
- Post-Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Hospital Moinhos de Vento, Porto Alegre, RS, Brazil.
| | - Fabiana Silva Costa
- Post-Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
| | - Rogério Friedman
- Post-Graduate Program in Endocrinology, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil; Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
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Krause M, Gerchman F, Friedman R. Coronavirus infection (SARS-CoV-2) in obesity and diabetes comorbidities: is heat shock response determinant for the disease complications? Diabetol Metab Syndr 2020; 12:63. [PMID: 32690985 PMCID: PMC7364287 DOI: 10.1186/s13098-020-00572-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/13/2020] [Indexed: 01/08/2023] Open
Abstract
Chronic inflammation is involved in the pathogenesis of several metabolic diseases, such as obesity and type 2 diabetes mellitus (T2DM). With the recent worldwide outbreak of coronavirus disease (SARS-CoV-2), it has been observed that individuals with these metabolic diseases are more likely to develop complications, increasing the severity of the disease and a poorer outcome. Coronavirus infection leads to the activation of adaptive and innate immune responses, resulting in massive inflammation (to so called cytokine storm), which in turn can lead to damage to various tissues, septic shock and multiple organ failure. Recent evidence suggests that the common link between metabolic diseases and SARS-CoV-2 is the inflammatory response (chronic/low-grade for metabolic diseases and acute/intense in coronavirus infection). However, the ability of the infected individuals to resolve the inflammation has not yet been explored. The heat shock response (HSR), an important anti-inflammatory pathway, is reduced in patients with metabolic diseases and, consequently, may impair inflammation resolution and control in patients with SARS-CoV-2, thus enabling its amplification and propagation through all tissues. Herein, we present a new hypothesis that aims to explain the increased severity of SARS-CoV-2 infection in people with metabolic diseases, and the possible benefits of HSR-inducing therapies to improve the inflammatory profile in these patients.
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Affiliation(s)
- Mauricio Krause
- Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Department of Physiology, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS Brazil
| | - Fernando Gerchman
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS Brazil
- Graduate Program in Medical Sciences: Endocrinology, Department of Internal Medicine, Faculty of Medicine, Porto Alegre, Brazil
| | - Rogério Friedman
- Endocrine and Metabolic Unit, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS Brazil
- Graduate Program in Medical Sciences: Endocrinology, Department of Internal Medicine, Faculty of Medicine, Porto Alegre, Brazil
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Vivan MA, Kops NL, Fülber ER, de Souza AC, Fleuri MASB, Friedman R. Prevalence of Vitamin D Depletion, and Associated Factors, among Patients Undergoing Bariatric Surgery in Southern Brazil. Obes Surg 2019; 29:3179-3187. [DOI: 10.1007/s11695-019-03963-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Thomas PS, Contreras A, Pruthi S, Krontiras H, Rimawi M, Garber J, Wang T, Hilsenbeck SG, Vornik LA, Gilmer T, Friedman R, Heckman-Stoddard BM, Dunn B, Kuerer H, Brown PH. Abstract PD3-07: A phase II pre-surgical trial of lapatinib for the treatment of women with HER2 positive or EGFR positive ductal carcinoma in situ. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-pd3-07] [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: 11/16/2022]
Abstract
Abstract
Background: Estrogen receptor (ER)-negative tumors and human epidermal growth factor 2-Neu (HER2) positive breast cancers are known to be more clinically aggressive subtypes of breast cancer and account for 30% of all breast cancers. Women with HER2 + breast cancers, whether ER+ or ER -, require cytotoxic chemotherapy with a HER2-targeting agent, and often have adverse outcomes. Thus, preventive agents are needed to reduce the incidence of these subtypes of aggressive breast cancer. Lapatinib, a dual tyrosine kinase inhibitor, inhibits epidermal growth factor receptors (EGFR) and HER2 kinases and has shown to decrease breast cell proliferation in invasive breast cancer and adjacent premalignant lesions. Therefore, we conducted a multi-institutional randomized Phase II clinical trial to study the effects of the signal transduction inhibitor lapatinib in women with HER2-positive or EGFR-positive ductal carcinoma in situ (DCIS).
Methods: Randomized participants received either lapatinib (750mg, 1000mg, or 1500mg) or placebo daily for 2-6 weeks prior to their surgery. After minimal accrual, the trial was later amended to lapatinib 1000mg or placebo. Pre-treatment breast tissue was obtained from initial diagnostic core biopsy and post-treatment breast tissue was obtained from surgical excision specimen. Blood was obtained prior to surgery to assess serum lapatinib level. Participants kept a daily symptom assessment log and had a cardiac assessment at baseline and prior to surgery. Patients were instructed to take drug up to and including the day before surgery. The dual primary endpoint for this study was change in proliferation in pre- versus post-treatment biopsies between the two treatment arms, as measured by Ki67 as well as toxicity assessment. Secondary endpoints included incidence of DCIS at surgery and modulation of tissue biomarker expression in growth factor receptors (EGFR, ErbB2); phosphorylated growth factor receptor (phospho-ErbB2); signal transduction markers (MAPK, phospho-MAPK); hormone receptors (ER, PR); and p27.
Results:Twenty-two women (mean age: 51; range: 32-66) with HER2+ or EGFR+ DCIS were treated with lapatinib (1,000 or 1,500 mg) or placebo for 2–6 weeks prior to surgical excision. Ki67 expression was significantly decreased in the lapatinib treatment arms compared to placebo (p=0.0122). Diarrhea, fatigue, and skin reactions were notable adverse events that occurred predominately in the lapatinib arm compared to placebo. No grade 3 or 4 events related to the study drug were noted during the study. No changes were noted in cardiac function. DCIS was present in all surgical specimens in both arms. Invasive breast cancer was noted in 1 patient on lapatinib 1000mg and 3 patients on placebo. No statistically significant changes were noted in signal transduction biomarkers
Conclusion:These results demonstrate the effectiveness of lapatinib in reducing proliferation in women with EGFR+ or HER2+ DCIS. Even low-grade toxicities can deter use of an agent in the prevention setting. This and the lack of a risk model for HER2+ and triple negative breast cancer make the development of larger scale clinical prevention trials of lapatinib for the prevention a challenge.
Citation Format: Thomas PS, Contreras A, Pruthi S, Krontiras H, Rimawi M, Garber J, Wang T, Hilsenbeck SG, Vornik LA, Gilmer T, Friedman R, Heckman-Stoddard BM, Dunn B, Kuerer H, Brown PH. A phase II pre-surgical trial of lapatinib for the treatment of women with HER2 positive or EGFR positive ductal carcinoma in situ [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr PD3-07.
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Affiliation(s)
- PS Thomas
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - A Contreras
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - S Pruthi
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - H Krontiras
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - M Rimawi
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - J Garber
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - T Wang
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - SG Hilsenbeck
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - LA Vornik
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - T Gilmer
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - R Friedman
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - BM Heckman-Stoddard
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - B Dunn
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - H Kuerer
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
| | - PH Brown
- University of Texas at MD Anderson Cancer Center, Houston, TX; Mayo Clinic, Rochester, MN; University of Alabama Medical Center, Birmingham, AL; Baylor College of Medicine, Houston, TX; Dana Farber Cancer Institute, Boston, MA; National Cancer Institute, Bethesda, MD; Glaxo Smith Kline, Durham, NC
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Fayh APT, Borges K, Cunha GS, Krause M, Rocha R, de Bittencourt PIH, Moreira JCF, Friedman R, da Silva Rossato J, Fernandes JR, Reischak-Oliveira A. Effects of n-3 fatty acids and exercise on oxidative stress parameters in type 2 diabetic: a randomized clinical trial. J Int Soc Sports Nutr 2018; 15:18. [PMID: 29713249 PMCID: PMC5914016 DOI: 10.1186/s12970-018-0222-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 12/20/2017] [Accepted: 04/12/2018] [Indexed: 12/21/2022] Open
Abstract
Background The relationship between diabetes and oxidative stress has been previously reported. Exercise represents a useful non-pharmacological strategy for the treatment in type 2 diabetic (T2DM) patients, but high intensity exercise can induce a transient inflammatory state and increase oxidative stress. Nutritional strategies that may contribute to the reduction of oxidative stress induced by acute exercise are necessary. The aim of this study was to examine if n-3 PUFA supplementation intervention can attenuate the inflammatory response and oxidative stress associated with high intensity exercise in this population. As a primary outcome, lipoperoxidation measurements (TBARS and F2-isoprostanes) were selected. Methods Thirty T2DM patients, without chronic complications, were randomly allocated into two groups: placebo (gelatin capsules) or n-3 PUFA (capsules containing 180 mg of eicosapentaenoic acid and 120 mg of docosahexaenoic acid). Blood samples were collected fasting before and after 8 weeks supplementation. In the beginning and at the end of protocol, an acute exercise was performed (treadmill), and new blood samples were collected before and immediately after the exercise for measurements of oxidative stress and high-sensitivity C-reactive protein (hs-CRP). Results After the supplementation period, a decrease in triglycerides levels was observed only in n-3 PUFA supplementation group (mean difference and 95% CI of 0.002 (0.000–0.004), p = 0.005). Supplementation also significantly reduced TRAP levels after exercise (mean difference and 95% CI to 9641 (− 20,068–39,351) for − 33,884 (− 56,976 - -10,793), p = 0.004, Cohen’s d effect size = 1.12), but no significant difference was observed in n-3 PUFA supplementation group in lipoperoxidation parameters as TBARS (mean difference and 95% CI to − 3.8 (− 10–2.4) for − 2.9 (− 1.6–7.4) or F2-isoprostanes (mean difference and 95% CI -0.05 (− 0.19–0.10) for − 0.02 (− 0.19–0.16), p > 0.05 for both. Conclusion PUFA n-3 supplementation reduced triglycerides as well as TRAP levels after exercise, without a significant effect on inflammatory and oxidative stress markers. This study is registered at ClinicalTrials.gov with the registration number of NCT03182712.
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Affiliation(s)
- Ana Paula Trussardi Fayh
- Departament of Nutrition, Health Sciences Center, Federal University of State of Rio Grande do Norte, Avenida Senador Salgado Filho, n° 3000, Natal, RN 59078-970 Brazil
| | - Katiuce Borges
- 2Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90690-200 Brazil
| | - Giovani Santos Cunha
- 2Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90690-200 Brazil
| | - Mauricio Krause
- 3Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170 Brazil
| | - Ricardo Rocha
- 4Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-000 Brazil
| | - Paulo Ivo Homem de Bittencourt
- 3Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170 Brazil
| | - José Cláudio Fonseca Moreira
- 4Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-000 Brazil
| | - Rogério Friedman
- 5Endocrine Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90035-000 Brazil
| | - Juliane da Silva Rossato
- 3Laboratory of Inflammation, Metabolism and Exercise Research (LAPIMEX) and Laboratory of Cellular Physiology, Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90050-170 Brazil
| | - Jõao Roberto Fernandes
- 2Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90690-200 Brazil
| | - Alvaro Reischak-Oliveira
- 2Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90690-200 Brazil
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17
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Friedman R. Muscle, inflammation and metabolic health: is irisin the missing link? Arch Endocrinol Metab 2017; 61:511. [PMID: 29412379 PMCID: PMC10522067 DOI: 10.1590/2359-3997000000303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 11/29/2017] [Indexed: 11/22/2022]
Affiliation(s)
- Rogério Friedman
- Universidade Federal do Rio Grande do SulServiço de Endocrinologia, Hospital de Clínicas de Porto AlegreDepartamento de Medicina InternaPorto AlegreRSBrasilDepartamento de Medicina Interna, Universidade Federal do Rio Grande do Sul (UFRGS), Serviço de Endocrinologia, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brasil
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18
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Kops NL, Correia Horvath JD, de Castro MLD, Friedman R. Anthropometric and lipid profile of individuals with severe obesity carrying the fatty acid-binding protein-2 Thr54 allele. Nutrition 2017; 41:45-50. [PMID: 28760427 DOI: 10.1016/j.nut.2017.01.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/08/2016] [Revised: 01/16/2017] [Accepted: 01/25/2017] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the anthropometric and lipid profiles of individuals being considered for bariatric surgery, taking into account the presence of the Thr54 allele of the fatty acid-binding protein-2 (FABP-2) gene (rs1799883), and dietary intake. METHODS In a cross-sectional study, 120 participants being evaluated for bariatric surgery were asked to keep 24-h dietary records (R24 h) for 3 d, and to collect a 24-h urine sample for measurement of urea (as an assessment of the adequacy of food records) during day 3 of the diet record; a fasting blood sample for laboratory and genetic evaluations was collected. RESULTS When considering the whole sample, no significant differences were found; however, those who complied with the R24 h (n = 43) had more years of schooling and higher saturated fat intake, but lower weight and body mass index (BMI). When analyzing only the completers, the Thr54 allele carriers showed higher body weight (P = 0.02), BMI (P = 0.03), hip circumference (P = 0.02), basal metabolic rate (P = 0.02), and homeostatic model assessment-β (P = 0.04) compared with those who were homozygous for Ala54. CONCLUSION When the participants complied with the R24 h, Thr54 carriers were shown to have higher anthropometric parameters and higher homeostatic model assessment-β values than those with the wild genotype, but the lipid profile resulted similar in both carriers and noncarriers.
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Affiliation(s)
- Natalia Luiza Kops
- Post-Graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
| | - Jaqueline D Correia Horvath
- Post-Graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Mariana L Dias de Castro
- Post-Graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Rogério Friedman
- Post-Graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil; Endocrinology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
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19
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Deluchi M, Costa FS, Friedman R, Gonçalves R, Bizarro L. Attentional bias to unhealthy food in individuals with severe obesity and binge eating. Appetite 2017; 108:471-476. [DOI: 10.1016/j.appet.2016.11.012] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 11/02/2016] [Accepted: 11/03/2016] [Indexed: 11/16/2022]
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20
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Fayh A, Silva A, Friedman R. MON-PP211: Effects of Weight Loss on Abdominal Muscle of Obese: a Pilot Study. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30643-9] [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: 10/23/2022]
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21
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Pereira SV, Dos Santos M, Rodrigues PG, do Nascimento JF, Timm JRT, Zancan R, Friedman R, Veronese FV. Increased urine podocyte-associated messenger RNAs in severe obesity are evidence of podocyte injury. Obesity (Silver Spring) 2015; 23:1643-9. [PMID: 26147062 DOI: 10.1002/oby.21156] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 03/15/2015] [Accepted: 04/20/2015] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The aim of this study was to correlate different degrees of excess weight with the expression of podocyte-associated messenger RNAs (mRNAs) in urine. METHODS The sample comprised 83 patients with overweight or obesity class I, II, or III and 18 healthy controls. The expression of nephrin, podocin, podocalyxin, α-actinin-4, α3β1integrin, vascular endothelial growth factor, and transforming growth factor-beta (TGF-β1 ) mRNA in urine was quantified with the real-time polymerase chain reaction. mRNA expression was correlated with body mass index, the metabolic syndrome, albuminuria, and inflammation. RESULTS Adults with obesity class III had higher levels of serum lipids, glucose, HbA1C, insulin resistance, and C-reactive protein (P < 0.05), with 85% of the subjects meeting criteria for the metabolic syndrome (P < 0.001 vs. other groups). Urinary podocyte-associated mRNAs were higher in adults with obesity class III than in other groups (P < 0.05). Patients with overweight or obesity class I or II also had higher levels of podocyte mRNAs than controls: nephrin (P = 0.021), α-actinin-4 (P = 0.014), α3β1integrin (P = 0.036), and TGF-β1 (P = 0.005). Metabolic syndrome, hyperinsulinemia, and C-reactive protein were correlated with podocyturia, but only higher insulin levels were related regardless of obesity. CONCLUSIONS Severe obesity and hyperinsulinemia were associated with higher urinary expression of podocyte-associated mRNAs, even at normal urinary albumin excretion rates.
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Affiliation(s)
- Sane Vianna Pereira
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Mariane Dos Santos
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patrícia Garcia Rodrigues
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Jonathan Fraportti do Nascimento
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - João Rodolfo Teló Timm
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rafael Zancan
- Division of Nephrology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rogério Friedman
- Division of Endocrinology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Francisco Veríssimo Veronese
- Graduate Program in Medicine: Medical Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Division of Nephrology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
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22
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Veronese FV, Pereira SV, dos Santos M, Rodrigues PG, do Nascimento JF, Timm JT, Zancan R, Friedman R. FO035HIGH BODY MASS INDEX AND METABOLIC SYNDROME ARE ASSOCIATED WITH PODOCYTE INJURY IN OBESE INDIVIDUALS. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv142.03] [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: 11/15/2022] Open
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23
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Sarmento RA, Antonio JP, Riboldi BP, Montenegro KR, Friedman R, de Azevedo MJ, de Almeida JC. Reproducibility and validity of a quantitative FFQ designed for patients with type 2 diabetes mellitus from southern Brazil. Public Health Nutr 2014; 17:2237-45. [PMID: 24107661 PMCID: PMC10282628 DOI: 10.1017/s1368980013002644] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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] [Received: 05/20/2013] [Revised: 08/11/2013] [Accepted: 08/25/2013] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To evaluate the reproducibility and validity of a previously constructed FFQ to assess the usual diet of patients with type 2 diabetes mellitus (T2DM). DESIGN Cross-sectional survey using two quantitative FFQ (1-month interval) supported by a food photograph portfolio, a 3 d weighed diet record (WDR) and urinary N output measurement (as a biomarker of protein intake). SETTING Group of Nutrition in Endocrinology, southern Brazil. SUBJECTS Out-patients with T2DM. RESULTS From a total of 104 eligible T2DM patients, eighty-eight were included in the evaluation of FFQ reproducibility and seventy-two provided data for the validity study. The intakes estimated from the two FFQ did not differ (P > 0·05) and the correlation coefficients were significant (P < 0·01) for energy and nutrients, ranging from 0·451 (soluble fibre) to 0·936 (PUFA). Regarding the validity evaluation, data from the FFQ were higher than those from the WDR for total (28·3%), soluble (27·4%) and insoluble fibres (29·1%), and SFA (13·5%), MUFA (11·1 %) and total lipids (9·2%; all P < 0·05). There were significant correlation coefficients between the FFQ and WDR for most nutrients, when adjusted for energy intake and de-attenuated. Also, the Bland-Altman plots between the FFQ and WDR for energy and macronutrient intakes showed that the FFQ may be used as alternative method to the WDR. The validity coefficient (using the method of triads) for the FFQ protein intake was 0·522 (95% CI 0·414, 0·597). CONCLUSIONS This quantitative FFQ was valid and precise to assess the usual diet of patients with T2DM, according to its validity and reproducibility.
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Affiliation(s)
- Roberta Aguiar Sarmento
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
| | - Juliana Peçanha Antonio
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
| | - Bárbara Pelicioli Riboldi
- Nutrition College, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Karina Romeu Montenegro
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
- Nutrition College, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Rogério Friedman
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
- Department of Internal Medicine, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Mirela Jobim de Azevedo
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
- Department of Internal Medicine, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Jussara Carnevale de Almeida
- Endocrinology Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, Prédio 12, 4° andar, 90035-003 Porto Alegre, Rio Grande do Sul, Brazil
- Nutrition College, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
- Department of Internal Medicine, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Rizzo L, Sutton DA, Wiederhold NP, Thompson EH, Friedman R, Wickes BL, Cano-Lira JF, Stchigel AM, Guarro J. Isolation and characterisation of the fungus Spiromastix asexualis sp. nov. from discospondylitis in a German Shepherd dog, and review of Spiromastix with the proposal of the new order Spiromastixales (Ascomycota). Mycoses 2014; 57:419-28. [PMID: 24621407 DOI: 10.1111/myc.12178] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 12/10/2013] [Revised: 01/09/2014] [Accepted: 01/30/2014] [Indexed: 11/27/2022]
Abstract
The genus Spiromastix consists of several fungal species that have been isolated from soil and animal dung in various parts of the world. However, these species are considered to be of low pathogenic potential, as no cases of infections caused by these fungi have been reported. Here, we describe the clinical course of discospondylitis in a dog from which a fungus was cultured from a biopsy and identified as a Spiromastix species by morphologic characteristics and sequencing. Phylogenetic analysis determined this to be a new species, Spiromastix asexualis, which is described, and a new order, Spiromastixales, is proposed.
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Affiliation(s)
- L Rizzo
- Sonora Veterinary Specialists, Phoenix, AZ, USA
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25
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Abstract
About 30% of patients with type 2 diabetes mellitus develop clinically overt nephropathy. Hyperglycemia is necessary, but not sufficient, to cause the renal damage that leads to kidney failure. Diabetic nephropathy (DN) is a multifactorial disorder that results from interaction between environmental and genetic factors. In the present article we will review the role of the nitric oxide synthase (NOS) in the pathogenesis of DN.Nitric oxide (NO) is a short-lived gaseous lipophilic molecule produced in almost all tissues, and it has three distinct genes that encode three NOS isoforms: neuronal (nNOS), inducible (iNOS) and endothelial (eNOS).The correct function of the endothelium depends on NO, participating in hemostasis control, vascular tone regulation, proliferation of vascular smooth muscle cells and blood pressure homeostasis, among other features. In the kidney, NO plays many different roles, including control of renal and glomerular hemodynamics. The net effect of NO in the kidney is to promote natriuresis and diuresis, along with renal adaptation to dietary salt intake.The eNOS gene has been considered a potential candidate gene for DN susceptibility. Three polymorphisms have been extensively researched: G894T missense mutation (rs1799983), a 27-bp repeat in intron 4, and the T786C single nucleotide polymorphism (SNP) in the promoter (rs2070744). However, the potential link between eNOS gene variants and the induction and progression of DN yielded contradictory results in the literature.In conclusion, NOS seems to be involve in the development and progression of DN. Despite the discrepant results of many studies, the eNOS gene is also a good candidate gene for DN.
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Affiliation(s)
| | - Cristiane Bauermann Leitão
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Endocrine Division of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Rogério Friedman
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Endocrine Division of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Luis Henrique Canani
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Endocrine Division of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
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26
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Correia Horvath JD, Dias de Castro ML, Kops N, Kruger Malinoski N, Friedman R. Obesity coexists with malnutrition? Adequacy of food consumption by severely obese patients to dietary reference intake recommendations. NUTR HOSP 2014; 29:292-9. [PMID: 24528344 DOI: 10.3305/nh.2014.29.2.7053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
To assess the adequacy of food intake in severely obese patients and describe their main nutritional deficiencies on the basis of Dietary Reference Intakes (DRIs). Patients on a waiting list for bariatric surgery were sequentially recruited from March 2010 to November 2011. All subjects underwent nutritional status assessment (anthropometry, dietary recall and semi-structured interview), socioeconomic evaluation (Brazilian Association of Research Companies criteria) and laboratory testing (glucose/hormone/lipid panel). A total of 77 patients were assessed, 50 of whom (76.6%) were female. Mean age was 44.48 ± 12.55 years. The most common comorbidities were hypertension (72.4%), binge eating disorder (47.4%), type 2 diabetes mellitus (32.9%), sleep apnea (30.3%) and dyslipidemia (18.4%). Macronutrient intake was largely adequate, in view of the high calorie intake. However, some micronutrient deficiencies were present. Only 19.5% of patients had an adequate intake of potassium, 26.0% of calcium, and 66.2% of iron. All subjects consumed more than the minimum recommended intake of sodium, with 98.7% reaching the upper limit. Bcomplex vitamin intake was satisfactory (adequate in >80% of subjects), but lipid-soluble vitamin (A, D, E) intake often fell short of the RDI. The diet of severely obese patients is unbalanced, with high calorie intake paralleled by insufficient micronutrient intake. When these patients are assessed and managed, qualitative dietary changes should be considered in addition to routine caloric restriction.
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Affiliation(s)
- Jaqueline Driemeyer Correia Horvath
- Graduate Program in Endocrinology. UFRGS School of Medicine. Center of Health Sciences. Program in Dietetics. UCS. Department of Endocrinology. Hospital de Clínicas de Porto Alegre..
| | - Mariana Laitano Dias de Castro
- Graduate Program in Endocrinology. UFRGS School of Medicine. Department of Endocrinology. Hospital de Clínicas de Porto Alegre..
| | - Natália Kops
- Undergraduate Program in Dietetics. UFRGS School of Medicine..
| | | | - Rogério Friedman
- Graduate Program in Endocrinology. UFRGS School of Medicine. Department of Endocrinology. Hospital de Clínicas de Porto Alegre. Department of Internal Medicine. UFRGS School of Medicine. Brazil..
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27
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Meyer A, Getz H, Snider S, Sullivan K, Long S, Turner R, Friedman R. Remediation and Prophylaxis of Anomia in Primary Progressive Aphasia. ACTA ACUST UNITED AC 2013; 94:275-276. [PMID: 25101147 DOI: 10.1016/j.sbspro.2013.09.138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- A Meyer
- Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center
| | - H Getz
- Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center
| | - S Snider
- Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center
| | - K Sullivan
- Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center
| | - S Long
- Department of Neurology, Georgetown University Medical Center
| | - R Turner
- Department of Neurology, Georgetown University Medical Center
| | - R Friedman
- Center for Aphasia Research and Rehabilitation, Georgetown University Medical Center
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28
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Canani LH, Copstein E, Pecis M, Friedman R, Leitão CB, Azevedo MJ, Triches C, Rados DRV, Moreas RS, Gross JL. Cardiovascular autonomic neuropathy in type 2 diabetes mellitus patients with peripheral artery disease. Diabetol Metab Syndr 2013; 5:54. [PMID: 24295032 PMCID: PMC3849595 DOI: 10.1186/1758-5996-5-54] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 09/17/2013] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE To evaluate possible associations between cardiovascular autonomic dysfunction and peripheral artery disease (PAD) in patients with type 2 diabetes mellitus. RESEARCH DESIGN AND METHODS In this cross-sectional study, 67 patients with type 2 diabetes were included. PAD was identified by Doppler ultrasonography: systolic ankle-brachial pressure index <0.9. Cardiovascular autonomic function, besides five conventional cardiovascular autonomic function tests, was assessed by heart rate variability (HRV; 24-h ambulatory ECG recording) in time and frequency domains (spectral analyses) and three dimensional return maps. Power spectral analyses (PSA) were quantified in low frequency (LF), high frequency (HF), and very low frequency. RESULTS Patients with PAD (n = 30) had longer diabetes duration, higher systolic blood pressure (BP), waist-to-hip ratio, HbA1C test, and urinary albumin excretion (UAE) than patients without PAD. Most HRV indices in time domain were lower in patients with than without PAD. These patients also had lower PSA indices (LF=0.19±0.07 vs. 0.29±0.11 n.u.; LF/HF ratio=1.98±0.9 vs. 3.35±1.83; P< 0.001) and indices of sympathetic (three-dimensional return map: P1-night 61.7±9.4 vs. 66.8±9.7; P=0.04) and vagal (24-h P2 54.5±15.2 vs. 62.7±2.9; P< 0.02) activities (arbitrary units) than patients without PAD. Multivariate logistic regression analyses, adjusted for systolic BP, DM duration, HbA1C test, and UAE, confirmed the associations between impaired autonomic modulation and PAD, except for P1 index. CONCLUSION In conclusion, patients with type 2 diabetes with PAD had lower HRV indices than patients without PAD, reflecting a dysfunction of cardiovascular autonomic modulation.
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Affiliation(s)
- Luís Henrique Canani
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Eduardo Copstein
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Miriam Pecis
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Rogério Friedman
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Cristiane Bauermann Leitão
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Mirela Jobim Azevedo
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Cristina Triches
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Dimitris Rucks Varvaki Rados
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
| | - Ruy Silveira Moreas
- Cardiology Division of Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Jorge Luiz Gross
- Endocrine Division, Serviço de Endocrinologia do Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos 2350, Prédio 12, 4º andar, Porto Alegre, Rio Grande do Sul, 90035-003, Brazil
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29
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Green RJ, Hockman M, Friedman R, Vardas E, Cole P, Halkas A, Feldman C. Allergic rhinitis in South Africa: 2012 guidelines. S Afr Fam Pract (2004) 2013. [DOI: 10.1080/20786204.2013.10874320] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
| | - RJ Green
- Department of Paediatrics and Child Health, University of Pretoria, Private Practice, Linksfield Clinic, Johannesburg
| | - M Hockman
- Private Practice, Linksfield Clinic and Sandton Clinic, Johannesburg
| | - R Friedman
- Lancet Laboratories and Division of Medical Virology, Faculty of Health Sciences, Tygerberg Campus, Stellenbosch University
| | - E Vardas
- Lancet Laboratories, Johannesburg
| | - P Cole
- Private Practice, Netcare Krugersdorp Hospital
| | - A Halkas
- Charlotte Maxeke Johannesburg Academic Hospital and University of the Witwatersrand, Johannesburg
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30
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Lopes AL, T Fayh AP, de Souza Campos LG, Teixeira BC, Kreismann Carteri RB, Ribeiro JL, Friedman R, Reischak-Oliveira Á. The effects of diet- and diet plus exercise-induced weight loss on basal metabolic rate and acylated ghrelin in grade 1 obese subjects. Diabetes Metab Syndr Obes 2013; 6:469-75. [PMID: 24348060 PMCID: PMC3848645 DOI: 10.2147/dmso.s53501] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Diet and exercise are often prescribed as primary intervention regarding obesity-related disorders. Additionally, recent studies have shown beneficial effects of weight loss through diet and exercise in ghrelin concentrations in obese subjects. The aim of this study was to evaluate the effects of a 5% weight loss on lipid profile, resting metabolic rate (RMR), and acylated ghrelin (AG) using two different methods of intervention (diet or diet plus exercise). MATERIALS AND METHODS Eighteen subjects (twelve women and six men) aged 20-40 years with a body mass index of 30-34.9 kg/m(2) (grade 1 obesity) were randomized into two intervention groups: diet (n=9) or diet plus exercise (n=9). Both groups underwent treatment until 5% of the initial body weight was lost. At baseline and upon completion, RMR and AG were analyzed. RESULTS Both groups showed a significant decrease in body fat percentage and fat mass. The diet-plus-exercise group showed a decrease in AG (pre: 54.4±25.3 pg/mL and post: 33.2±19.1 pg/mL) and an increase in RMR (pre: 1,363±379 kcal/day, post: 1,633±223 kcal/day). CONCLUSION These data suggest that diet plus exercise induced weight loss and had beneficial effects on AG concentration and RMR, essential factors to ensure the benefits of a weight-loss program.
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Affiliation(s)
- André L Lopes
- Exercise Research Laboratory, School of Physical Education, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana Paula T Fayh
- Endocrine Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Health Sciences College of Trairi, Universidade Federal do Rio Grande do Norte, Santa Cruz, RN, Brazil
| | | | - Bruno C Teixeira
- Exercise Research Laboratory, School of Physical Education, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Randhall B Kreismann Carteri
- Exercise Research Laboratory, School of Physical Education, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jerri L Ribeiro
- Centro Universitário Metodista – IPA, Porto Alegre, RS, Brazil
| | - Rogério Friedman
- Endocrine Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Álvaro Reischak-Oliveira
- Exercise Research Laboratory, School of Physical Education, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Correspondence: Álvaro Reischak-Oliveira, Exercise Research Laboratory (LAPEX) School of Physical Education, Universidade Federal do Rio Grande do Sul, Rua Felizardo, 750, Porto Alegre, RS, Brazil 90690-200, Tel +55 51 3308 5862, Fax +55 51 3308 5842, Email
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Viana LV, Leitão CB, Grillo MDF, Rocha EPCC, Brenner JK, Friedman R, Gross JL. Are diabetes management guidelines applicable in 'real life'? Diabetol Metab Syndr 2012; 4:47. [PMID: 23171858 PMCID: PMC3547760 DOI: 10.1186/1758-5996-4-47] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 11/12/2012] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The American Diabetes Association (ADA) has published several diabetes treatment algorithms, but none have been tested in real-life settings. The aim of this study is to analyze the feasibility of achieving and/or maintaining HbA1c levels <7.0% using current diabetes treatment guidelines and the resources available in the public health care system of Brazil. METHODS A one-year, single-arm interventional study was conducted with type 2 diabetes patients in a primary care unit. Intervention consisted of intensification of lifestyle changes and sequential prescription of drugs based on ADA guidelines using the medications available through the publicly funded Unified Health System (Sistema Único de Saúde, SUS). RESULTS Ninety patients (age: 62.7±10.4 years; diabetes duration: 8.2±9.1 years) completed the trial. During the intervention period, increases were observed in number of oral antidiabetic agent (OAD) classes per patient (1.50±0.74 vs. 1.67±0.7; p=0.015), OAD pills per patient (2.64±1.89 vs. 3.33±2.23 pills/patient; p <0.001), insulin dosage (0.20±0.29 vs.0.50±0.36 UI/kg/day; p=0.008) and number of patients on insulin (19 [21%] vs. 31 [34%]; p<0.01), but no improvement in HbA1c (7.2±1.6% vs. 7.3±1.5%; p=0.453) or frequency of patients on target, defined as HbA1c <7% (53.3% vs. 48.9%; p=0.655). Patients with baseline HbA1c <7% had a small increase in HbA1c during the trial (6.3±0.4 vs. 6.7±0.9%; p=0.002). No such change was observed in those with baseline HbA1c ≥7%. CONCLUSIONS In this group of patients with a mean baseline HbA1c of 7.2%, implementation of 2006/2009 ADA/EASD guidelines led to achievement of the therapeutic goal of HbA1c <7% in a small proportion of patients.
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Affiliation(s)
- Luciana V Viana
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Cristiane B Leitão
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Maria de Fátima Grillo
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Ennio P C C Rocha
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Juliana K Brenner
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Rogério Friedman
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
| | - Jorge L Gross
- Endocrine Division and Primary Care Unit, Hospital de Clinicas de Porto Alegre and Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2350 – Prédio 12 – 4° andar, Porto Alegre, RS 90035-003, Brazil
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Sortica DA, Crispim D, Zaffari GP, Friedman R, Canani LH. The role of ecto-nucleotide pyrophosphatase/phosphodiesterase 1 in diabetic nephropathy. ACTA ACUST UNITED AC 2012; 55:677-85. [PMID: 22231969 DOI: 10.1590/s0004-27302011000900002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 11/26/2011] [Indexed: 01/19/2023]
Abstract
The increased prevalence of diabetes mellitus has caused a rise in the occurrence of its chronic complications, such as diabetic nephropathy (DN), which is associated with elevated morbidity and mortality. Familial aggregation studies have demonstrated that besides the known environmental risk factors, DN has a major genetic component. Therefore, it is necessary to identify genes associated with risk for or protection against DN. Ecto-nucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) is expressed in several tissues, including the kidneys. Increased levels of ENPP1 expression inhibit tyrosine-kinase activity of the insulin receptor in several cell types, leading to insulin resistance. K121Q polymorphism of the ENPP1 gene seems to be associated with insulin resistance and DN development. The elucidation of genetic factors and their associations will provide better understanding of the pathogenesis of DN and, may consequently, lead to a more effective approach to prevention and treatment.
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Affiliation(s)
- Denise Alves Sortica
- Endocrinology Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
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Fayh APT, Lopes AL, da Silva AMV, Reischak-Oliveira A, Friedman R. Effects of 5 % weight loss through diet or diet plus exercise on cardiovascular parameters of obese: a randomized clinical trial. Eur J Nutr 2012; 52:1443-50. [PMID: 23052625 DOI: 10.1007/s00394-012-0450-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 09/20/2012] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To evaluate the effects of 5 % weight loss, through diet only or diet plus exercise, on lipid profile, inflammation and endothelial function in obese individuals. METHODS In this randomized clinical trial, 48 obese individuals were randomized to either a diet only group (DI) or a diet and exercise group (DI + EXE). Treatment was maintained until 5 % of the initial body weight was lost. At baseline and upon completion, the following parameters were analyzed: total cholesterol and fractions, triglycerides, fibrinogen, von Willebrand factor, high-sensitive C-reactive protein (hs-CRP) and endothelial function (brachial artery flow-mediated vasodilation-FMD). RESULTS Thirteen individuals dropped out before completing the weight loss intervention. The median time required for reduction of 5 % of initial body weight was 79.7 days for the DI group and 65.9 days for the DI + EXE group (P = 0.16). In both DI (n = 18) and DI + EXE (n = 17), total cholesterol (-15.8 ± 4.8 and -10.5 ± 4.9 mg/dL, respectively), triglycerides (-33.8 ± 10.0 and -39.4 ± 10.3 mg/dL, respectively) and hs-CRP (-1.35 ± 0.41 and -0.45 ± 0.43 mg/L, respectively) decreased significantly, and in a similar response (repeated measures ANOVA). Weight loss did not change significantly the fibrinogen and FMD in both groups. CONCLUSION A 5 % weight loss improves lipid profile and reduces inflammation in obese individuals. Endothelial function did not change significantly. Weight loss has a significant impact on these cardiovascular risk factors, and this is independent of physical training.
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Affiliation(s)
- Ana Paula Trussardi Fayh
- Endocrine Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Su Z, Yemul S, Estabrook A, Friedman R, Zimmer S, Fisher P. Transcriptional switching model for the regulation of tumorigenesis and metastasis by the ha-ras oncogene - transcriptional changes in the ha-ras tumor-suppressor gene lysyl oxidase. Int J Oncol 2012; 7:1279-84. [PMID: 21552961 DOI: 10.3892/ijo.7.6.1279] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A model system is described that allows an analysis of the molecular and biochemical changes associated with expression and suppression of the oncogenic and metastatic phenotype of cloned rat embryo fibroblast (CREF) cells. Ha-ras-transformed CREF cells are morphologically transformed, anchorage-independent and both tumorigenic and metastatic in athymic nude mice and syngeneic Fischer rats. Co-expression of the Ha-ras oncogene and Krev-1 tumor suppressor gene in CREF cells results in suppression of in vitro transformation. In contrast, Ha-ras/Krev-1 transformed CREF cells retain, with greatly extended latency periods, both tumorigenic and metastatic capabilities in athymic nude mice. The present study investigates changes in the Ha-ms suppressor gene, rrg (lysyl oxidase), during expression and suppression of the oncogenic phenotype in CREF cells. Nontumorigenic CREF cells and CREF cells transformed by the Ha-ras and Krev-1 gene that express a suppression in in vitro transformation contain elevated levels of lysyl oxidase mRNA and protein. In contrast, Ha-ms and Ha-ras/Krev-1 nude mouse tumor- and nude mouse lung metastasis-derived CREF cells contain reduced levels of lysyl oxidase mRNA and protein. Nuclear run-on assays indicate that suppression of lysyl oxidase expression in transformed subclones of CREF cells correlates with a reduction in transcription of the lysyl oxidase gene. Taken together, the current studies support a transcriptional switching model in which lysyl oxidase expression correlates directly with suppression of the Ka-ms-induced transformation phenotype and escape from oncogenic suppression correlates with a transcriptional silencing of the lysyl oxidase gene and decreased lysyl oxidase mRNA and protein.
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Affiliation(s)
- Z Su
- COLUMBIA UNIV,COLL PHYS & SURG,CTR COMPREHENS CANC,INST CANC RES,DEPT PATHOL,NEW YORK,NY 10032. COLUMBIA UNIV,COLL PHYS & SURG,DEPT UROL,NEW YORK,NY 10032. COLUMBIA UNIV,COLL PHYS & SURG,DEPT SURG,NEW YORK,NY 10032. UNIFORMED SERV UNIV HLTH SCI,DEPT PATHOL,BETHESDA,MD 20814. LP MARKEY CANC CTR,DEPT MICROBIOL & IMMUNOL,LEXINGTON,KY 40536
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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.
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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
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Bäumler W, Paasch U, Klein A, Landthaler M, Friedman R, Shafirstein G. Intravenous injection of indocyanine green to enhance laser-assisted coagulation of blood vessels in skin - an animal study. J Eur Acad Dermatol Venereol 2012; 27:e206-11. [DOI: 10.1111/j.1468-3083.2012.04588.x] [Citation(s) in RCA: 2] [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: 10/28/2022]
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Ferrieres J, Berkenboom G, Coufal Z, James S, Mohacsi A, Pavlides G, Norrbacka K, Sartral M, Paget MA, Tomlin M, Zeymer U, Hoffmann P, Keller F, Blicher TM, Hommel K, Abildstrom SZ, Madsen M, Kamper AL, Rogacev K, Pinsdorf T, Weingartner O, Gerhart M, Welzel E, van Bentum K, Menzner A, Fliser D, Lutjohann D, Heine G, Di Benedetto A, Marcelli D, Giordana G, Cerino F, Gatti E, Otero A, Dominguez-Sardina M, Castineira MC, Crespo JJ, Ferreras A, Mojon A, Ayala DE, Fernandez JR, Hermida RC, Investigadores Proyecto Hygia, Doi Y, Yoshihara F, Iwashima Y, Takata H, Fujii T, Horio T, Nakamura S, Kawano Y, Onofriescu M, Cepoi V, Segall L, Covic A, Kurnatowska I, Grzelak P, Kaczmarska M, Masajtis-Zagajewska A, Rutkowska-Majewska E, Stefanczyk L, Nowicki M, Gozhenko A, Susla O, Shved M, Mysula I, Susla H, Cordeiro Silva Junior AC, Smanio P, Amparo FC, Oliveira MAC, Gonzaga CC, Sousa MG, Passarelli Jr O, Borelli F, Lotaif LD, Sousa AGMR, Amodeo C, Inaguma D, Ando R, Ikeda M, Joki N, Koiwa F, Komatsu Y, Sakaguchi T, Shinoda T, Yamaka T, Shigematsu T, Pizzarelli F, Rossi C, Dattolo P, Tripepi G, Mieth M, Bandinelli S, Zoccali C, Mass R, Ferrucci L, Gifford F, Methven S, Boag DE, Spalding EM, MacGregor MS, Kirsch M, Dorhofer L, Bruning J, Banas B, Kramer BK, Schubert M, Boger CA, Dorhofer L, Kirsch M, Bruning J, Banas B, Kramer BK, Schubert M, Boger CA, Atapour A, Kalantari E, Shahidi S, Mortazavi M, Marron B, Quiros P, Vega N, Garcia-Canton C, Moreno F, Prieto M, Ahijado F, Salgueira M, Paez C, Castellano I, Lerma JL, De Arriba G, Martinez-Ocana JC, Morales A, Ramirez de Orellana M, Ramos A, Duarte V, Ruiz C, Gallego S, Ortiz A, Furuhashi T, Moroi M, Joki N, Hase H, Masai H, Kunimasa T, Nakazato R, Fukuda H, Sugi K, Valluri A, Severn A, Chakraverty S, Palma R, Polo A, Espigares MJ, Manjon M, Cerezo S, Garcia-Agudo R, Aoufi S, Ruiz-Carrillo F, Gonzalez-Carro P, Perez-Roldan F, Tenias JM, Santiago da Silva P, Cunha C, Coelho L, Viana A, Moreira R, Wagner S, Friedman R, Veloso V, Suassuna J, Grinsztejn B, Iimuro S, Imai E, Matsuo S, Watanabe T, Nitta K, Akizawa T, Makino H, Ohashi Y, Hishida A, Fujimoto S, Yano Y, Sato Y, Konta T, Iseki K, Moriyama T, Yamagata K, Tsuruya K, Yoshida H, Asahi K, Watanabe T, Bellasi A, Mandreoli M, Baldrati L, Rigotti A, Corradini M, Russo G, David S, Malmusi G, Di Nicolo P, Orsi C, Poisetti P, Zanbianchi L, Caruso F, Fabbri A, Santoro A, Moranne O, Couchoud C, Pradier C, Esnault V, Vigneau C, Skapinakis P, Ikonomou M, Kyroglou E, Chondrogiannis P, Sygelakis M, Varvara C, Kyriklidou P, Balafa O, Mavreas V, Tsakiris D, Goumenos D, Siamopoulos K, Ikonomou M, Skapinakis P, Eleftheroudi M, Chardalias A, Kyroglou E, Banioti A, Vakianos I, Sygelakis M, Kalaitzidis R, Asimakopoulos K, Tsakiris D, Goumenos D, Siamopoulos K, Methven S, Jardine A, MacGregor M, van der Tol A, Van Biesen W, De Groote G, Verbeke P, Eeckhaut K, Vanholder R, Ivkovic V, Karanovic S, Vukovic Lela I, Juric D, Fistrek M, Kos J, Kovac-Peic A, Pecin I, Premuzic V, Miletic-Medved M, Cvitkovic A, Fodor L, Jelakovic B. General & clinical epidemiology CKD 1-5 (1). Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.31] [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: 11/13/2022] Open
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Friedman R, Dillenburger B, Kaskan P, Kaas J, Roe A. Vibrotactile activation in areas MT, MST and FST revealed by intrinsic-signal optical imaging in anesthetized New World monkeys. J Vis 2010. [DOI: 10.1167/9.8.715] [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: 11/24/2022] Open
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Cianfrocca M, Kaklamani V, Rosen S, von Roenn J, Rademaker A, Rubin S, Friedman R, Uthe R, Gradishar W. A Phase I Trial of a Pegylated Liposomal Anthracycline (Doxil TM) and Lapatinib Combination in the Treatment of Metastatic Breast Cancer: Dose-Escalation Results of an Anthracycline and Lapatinib Combination Trial. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-3096] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Liposomal formulations such as pegylated liposomal doxorubicin (PLD) were developed to improve the therapeutic index and overall benefit of the anthracyclines (A). Lapatinib (L) is a selective and highly competitive inhibitor of ErbB1 and ErbB2 tyrosine kinases. The combination of conventional doxorubicin and an ErbB2 targeting agent (trastuzumab) was effective but led to an unacceptable risk of cardiac toxicity. The combination of PLD and L however may be effective with less cardiac risk. Methods: This is an open-label, phase I, dose-escalation trial of PLD at 20, 30, 45 and 60 mg/m2 IV every 4 weeks (maximum of 8 doses) and L, 1500 mg po daily until progression in patients (pts) with metastatic breast cancer (MBC). EGFR and/or ErbB2 positivity was not required. Prior chemotherapy, endocrine therapy and trastuzumab were allowed however prior A use was limited to 240 mg/m2 of doxorubicin or 600 mg/m2 of epirubicin. Initially, prior EGFR targeting therapies were not allowed however the trial was subsequently amended to allow prior lapatinib. Concomitant CYP3A4 inducers/ inhibitors were not allowed. A left ventricular ejection fraction (LVEF) of ≥ 50% was required. The primary objective was to evaluate the safety, tolerability and feasibility of the combination of PLD and L, particularly with respect to cardiac safety. MUGAs were performed at entry and every 8 weeks thereafter. Results: 16 patients (PLD: 20 mg/m2 - 4 pts; 30 mg/m2 - 3 pts; 45 mg/m2 – 6 pts; 60 mg/m2- 3 pts) with a mean age of 53 yrs (range, 33-68) have been treated for a total of 30 treatment cycles. Dose-limiting toxicity (DLT) was not reached. One pt experienced an LVEF drop to < 50% after 4 cycles however this was accompanied by a pericardial effusion felt to be secondary to progressive disease. Adverse events observed include: grade IV- mucus plugging and knee pain in 1 pt each; grade III- fatigue and hand-foot-syndrome (HFS) in 2 pts each and edema, diarrhea, dizziness, headache, stomatitis and skin toxicity in 1 pt each; grade I/II in ≥2 pts- anemia, leucopenia, fatigue, shortness of breath, pain, nausea, stomatitis, anorexia, diarrhea, increased alkaline phosphatase or transaminases, hypoalbuminemia and hyperglycemia. Preliminary response data in 11 evaluable pts reveals 1 PR, 3 SD, and 8 PD. Event-free and overall survival curves are as shown.Conclusions: In the first 16 pts treated, the combination of PLD and L has been well tolerated without treatment-related cardiac toxicity. One pt experienced an LVEF drop to < 50%, however this was felt likely to be disease-related. DLT was not reached however grade 3 HFS occurred in 2 out of 3 pts in the 60 mg/m2 cohort. A pharmacokinetic interaction cohort at the 45 mg/m2 dose is planned.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 3096.
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Affiliation(s)
| | | | | | | | | | | | | | - R. Uthe
- 1 Northwestern University, IL,
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Sagi E, Vardy D, Shemer A, Laver Z, Amichi B, Shiri J, Zuckerman F, Oren I, Friedman R, David M. Topical treatment of acne vulgaris with a combination of erythromycin 2% plus bifonazole 1% once daily compared to erythromycin 2% alone twice daily: a randomized, double-blind, controlled, clinical study. J DERMATOL TREAT 2009. [DOI: 10.1080/095466300750134197] [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: 10/17/2022]
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McCaughran JA, Juno CJ, Friedman R, Zylan K, O'malley E. Pre- and Neonatal Exposure to a High Salt Diet and the Susceptibility to Hypertension in the Dahl Rat. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/10641958609069091] [Citation(s) in RCA: 3] [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: 11/13/2022]
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Costa FS, Bandeira DR, Trentini C, Brilmann M, Friedman R, Nunes MA. Considerações acerca da avaliação psicológica das comorbidades psiquiátricas em obesos. Psicol estud 2009. [DOI: 10.1590/s1413-73722009000200009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Scain SF, Friedman R, Gross JL. A Structured Educational Program Improves Metabolic Control in Patients With Type 2 Diabetes. Diabetes Educ 2009; 35:603-11. [DOI: 10.1177/0145721709336299] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Purpose To evaluate the effectiveness of a structured education group program in metabolic control in patients with type 2 diabetes. Methods A randomized controlled trial was conducted in a public teaching hospital and tertiary care center. Participants were 104 patients with type 2 diabetes not using insulin (aged 59 ± 9.5 years, diabetes duration of 10.5 ± 6.70 years, 53% women) randomized to attend an 8-hour structured group education program (delivered in 4 sessions, for 4 weeks, by a trained nurse educator) or to usual care. A pretest and posttest assessed the patients' knowledge before and after the course. The main outcome measures were A1C, weight, blood pressure, and lipids at 4-month intervals, up to 12 months. Results A1C levels decreased significantly in the intervention group after the 4th month and remained lower than in the control group until the 12th month (multivariate analysis of covariance, with baseline A1C as a covariate). Weight, blood pressure levels, total cholesterol, and high-density lipoprotein levels improved significantly, and similarly, in both groups. Conclusions A structured education group program centered in self-management improves the glycemic control in patients with type 2 diabetes, reaching the peak effect at 4 months, and lasting for up to 12 months.
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Affiliation(s)
- Suzana Fiore Scain
- Public Health Unit, Hospital de Clínicas de Porto Alegre,
Universidade Federal do Rio Grande do Sul, Brazil
| | - Rogério Friedman
- Endocrine Division, Hospital de Clínicas de Porto Alegre,
Universidade Federal do Rio Grande do Sul, Brazil,
| | - Jorge Luiz Gross
- Endocrine Division Hospital de Clínicas de Porto Alegre,
Universidade Federal do Rio Grande do Sul, Brazil
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45
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Kramer CK, Leitão CB, Azevedo MJ, Canani LH, Maia AL, Czepielewski M, Paggi A, Rodrigues TC, Silveiro SP, Friedman R, Gross JL. Degree of catecholamine hypersecretion is the most important determinant of intra-operative hemodynamic outcomes in pheochromocytoma. J Endocrinol Invest 2009; 32:234-7. [PMID: 19542740 DOI: 10.1007/bf03346458] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Pheochromocytoma resection is often complicated by intra-operative hypertension and post-resection hypotension. Factors associated with these hemodynamic alterations are not well defined. The aim of this study was to analyse the clinical-laboratory features associated with hemodynamic parameters during pheochromocytoma resection. Twenty-seven patients submitted to tumor resection - either open (no.=18) or video laparoscopic - between 1978-2007 were included. Nineteen received pre-operative alpha-blockers. Intra-operative hemodynamic data analysed were: maximum and minimum mean arterial blood pressure (MABP), no. of severe hypertensive (systolic BP >200 mmHg) and hypotensive episodes (MABP <60 mmHg), maximum and minimum heart rate (HR), no. of episodes of tachycardia and bradycardia, need to receive iv intra-operative treatment for hypertension and hypotension and the volume of fluids administered during surgery. Patients were 39.4+/-14.4-yr-old, 66% women. Intra-operative hemodynamic parameters were not different in patients submitted to open or video laparoscopic resection. Maximum intraoperative HR and the percentage of patients with HR>100 beats/min were higher in patients without pre-operative alpha- blocker treatment (no.=8). Pre-operative urinary vanylmandelic acid was positively associated with intra-operative maximum MABP (r=0.535, p=0.047) and with maximum transoperative systolic BP (r=0.805, p=0.016). Pre-operative urinary catecholamine (Pearson correlation r=0.575, p=0.03) and vanylmandelic acid (Pearson correlation r=0.605, p=0.04) levels were associated with maximum intra- operative MABP, adjusted for the presence of pheochromocytoma symptoms, surgical approach and pre-operative alpha-blockers. In conclusion, the degree of pre-operative catecholamine secretion was the most important aspect of transoperative BP control.
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Affiliation(s)
- C K Kramer
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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46
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Lalani SR, Thakuria JV, Cox GF, Wang X, Bi W, Bray MS, Shaw C, Cheung SW, Chinault AC, Boggs BA, Ou Z, Brundage EK, Lupski JR, Gentile J, Waisbren S, Pursley A, Ma L, Khajavi M, Zapata G, Friedman R, Kim JJ, Towbin JA, Stankiewicz P, Schnittger S, Hansmann I, Ai T, Sood S, Wehrens XH, Martin JF, Belmont JW, Potocki L. 20p12.3 microdeletion predisposes to Wolff-Parkinson-White syndrome with variable neurocognitive deficits. J Med Genet 2008; 46:168-75. [PMID: 18812404 DOI: 10.1136/jmg.2008.061002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Wolff-Parkinson-White syndrome (WPW) is a bypass re-entrant tachycardia that results from an abnormal connection between the atria and ventricles. Mutations in PRKAG2 have been described in patients with familial WPW syndrome and hypertrophic cardiomyopathy. Based on the role of bone morphogenetic protein (BMP) signalling in the development of annulus fibrosus in mice, it has been proposed that BMP signalling through the type 1a receptor and other downstream components may play a role in pre-excitation. METHODS AND RESULTS Using the array comparative genomic hybridisation (CGH), we identified five individuals with non-recurrent deletions of 20p12.3. Four of these individuals had WPW syndrome with variable dysmorphisms and neurocognitive delay. With the exception of one maternally inherited deletion, all occurred de novo, and the smallest of these harboured a single gene, BMP2. In two individuals with additional features of Alagille syndrome, deletion of both JAG1 and BMP2 were identified. Deletion of this region has not been described as a copy number variant in the Database of Genomic Variants and has not been identified in 13 321 individuals from other cohort examined by array CGH in our laboratory. CONCLUSIONS Our findings demonstrate a novel genomic disorder characterised by deletion of BMP2 with variable cognitive deficits and dysmorphic features and show that individuals bearing microdeletions in 20p12.3 often present with WPW syndrome.
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Affiliation(s)
- S R Lalani
- Department of Molecular and Human Genetics, One Baylor Plaza, BCM225, MARB, R713, Houston, Texas 77030, USA.
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Leitão CB, Nabinger GB, Krahe AL, Bolson PB, Gerchman F, Friedman R, Gross JL, Canani LH. The role of K121Q ENPP1 polymorphism in diabetes mellitus and its complications. ACTA ACUST UNITED AC 2007; 41:229-34. [PMID: 18176722 DOI: 10.1590/s0100-879x2006005000202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Accepted: 09/13/2007] [Indexed: 01/01/2023]
Abstract
The aim of the present study was to analyze the frequency of K121Q polymorphism in the ENPP1 gene of Brazilian subjects according to ethnic origin and to determine its possible association with diabetes mellitus (DM) and/or diabetic complications. A cross-sectional study was conducted on 1027 type 2 DM patients and 240 anonymous blood donors (BD). Ethnicity was classified based on self-report of European and African descent. The Q allele frequency was increased in African descendant type 2 DM patients (KK = 25.9%, KQ = 48.2%, and QQ = 25.9%) and BD (KK = 22.0%, KQ = 53.8%, and QQ = 24.2%) compared to European descendant type 2 DM patients (KK = 62.7%, KQ = 33.3%, and QQ = 4.1%) and BD (KK = 61.0%, KQ = 35.6%, and QQ = 3.4%). However, there was no difference in genotype distribution or Q allele frequency between diabetic and non-diabetic subjects (European descendants: DM = 0.21 vs BD = 0.21, P = 0.966, and African descendants: DM = 0.50 vs BD = 0.51, P = 0.899). In addition, there were no differences in clinical, laboratory or insulin resistance indices among the three genotypes. The prevalence of DM complications was also similar. In conclusion, K121Q polymorphism is more common among Afro-Brazilian descendants regardless of glycemic status or insulin sensitivity indices. Likewise, insulin sensitivity and DM chronic complications appear not to be related to the polymorphism in this sample.
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Affiliation(s)
- C B Leitão
- Serviço de Endocrinologia, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
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48
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Scain SF, dos Santos BL, Friedman R, Gross JL. Type 2 diabetic patients attending a nurse educator have improved metabolic control. Diabetes Res Clin Pract 2007; 77:399-404. [PMID: 17296241 DOI: 10.1016/j.diabres.2007.01.002] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Accepted: 01/08/2007] [Indexed: 11/23/2022]
Abstract
To investigate if routine education by nurses is associated with improved metabolic control in type 2 diabetic (DM2) outpatients, we randomly selected 143 patients (81 women), not using insulin, at the Endocrine or Internal Medicine clinics, to be interviewed and submitted to a clinical and laboratory evaluation. Age was 59.1+/-10.1 years; duration of DM2 7.5+/-6.3 years; BMI 29.7+/-5.2 kg/m(2). Patients were grouped according to HbA(1c) (<7.0% or > or =7.0%). Age, gender, DM2 duration, BMI, and lipid profile were not different. Patients with HbA(1c)> or =7.0% (n=49) were more likely to be taking oral agents, and to be treated by internists rather than endocrinologists (P=0.04). Nurse education was associated with a greater proportion of patients with HbA(1c)<7.0%, especially among those attending the Internal Medicine clinic. In logistic regression, education by nurses remained associated to HbA(1c)<7.0% (OR: 3.29, P=0.005), after controlling for use of oral agents (OR 0.067, P=0.01), attending the Endocrine clinic (OR 4.11, P=0.002), self-reported adherence to diet ("yes" or "no"), known DM duration, and instruction level (NS). Nurse education contributes significantly and independently for better metabolic control in DM2 outpatients in a teaching hospital.
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Affiliation(s)
- Suzana F Scain
- Public Health Unit, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Brazil
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49
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Molina JR, Erlichman C, Kaufmann S, Adjei A, Rubin S, Friedman R, Reid J, Qin R, Felten S. A phase I study of lapatinib and topotecan in patients with solid tumors. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.3598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3598 Background: Drug resistance to topotecan can be the result of BCRP/ABCG2 expression. BCRP is a member of the ABC transporter family that pumps anticancer drugs out of the cell. Lapatinib is a potent and selective dual inhibitor of epidermal growth factor receptor (EGFR or ErbB1) and ErbB2 (Her2/Neu). 4-aminoquinazoline tyrosine kinase inhibitors have been shown to enhance the cytotoxicity of topotecan through inhibition of BCRP-mediated drug efflux in cancer cells. Methods: Thirty-seven patients with advanced stage cancers were enrolled at escalating dose levels of lapatinib and topotecan in cohorts IA, IB and IIB (MTD). Treatment schedule included lapatinib (750 - 1500 mg/d) daily for 21 (cohort IA) or 28 days (cohort IB) and topotecan (2.4 - 4.0 mg/ m2), days 1, 8 and 15; cycles were repeated every 28 days. Three patients were treated at each dose level, 18 on cohort IA, 9 on cohort IB and 10 at MTD (cohort IIB). Assessments of toxicity were performed with each cycle and clinical response was determined per RECIST criteria every other cycle. Results: The MTD for cohorts IA and IB was reached at a dose of 1250 mg of lapatinib and 3.2 mg/m2 of IV topotecan on days 1, 8 and 15. No DLT were seen during the dose escalation stage of cohorts IA and IB. Ten patients were enrolled at the MTD. There were no grade 4+ events. Thirteen grade 3+ events, considered to be related to treatment, were seen in 6 patients. The most common grade 3+ toxicities included dehydration (2) diarrhea (2), nausea (3), vomiting (2), neutropenia (1), thrombocytopenia (1), and fatigue (1). No abnormalities in left ventricular ejection fraction were noted. Stable disease was seen in 46% of the 37 patients. Conclusions: The combination of lapatinib and topotecan is a well-tolerated regimen. The MTD for the combination is lapatinib 1,250 mg orally once daily for 21 or 28 days and topotecan 3.2 mg/m2 on days 1, 8 and 15. Pharmacokinetic analysis for drug interaction will be available for presentation at the meeting. Supported in part by GSK and Mayo Clinic No significant financial relationships to disclose.
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Affiliation(s)
- J. R. Molina
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - C. Erlichman
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - S. Kaufmann
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - A. Adjei
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - S. Rubin
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - R. Friedman
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - J. Reid
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - R. Qin
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
| | - S. Felten
- Mayo Clinic, Rochester, MN; Roswell Park Cancer Institute, Buffalo, NY; GlaxoSmithKline, Collegeville, PA
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Fayh APT, Friedman R, Sapata KB, Oliveira ARD. Efeito da suplementação de L-arginina sobre a secreção de hormônio do crescimento e fator de crescimento semelhante à insulina em adultos. ACTA ACUST UNITED AC 2007; 51:587-92. [PMID: 17684620 DOI: 10.1590/s0004-27302007000400013] [Citation(s) in RCA: 9] [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] [Received: 05/03/2006] [Accepted: 12/04/2006] [Indexed: 11/22/2022]
Abstract
Baseado nos pressupostos de que a infusão de aminoácidos pode aumentar a secreção de hormônio de crescimento (GH), e que o metabolismo deste hormônio está relacionado com a secreção do fator de crescimento semelhante à insulina (IGF-I), o objetivo deste estudo foi verificar o efeito da suplementação de L-arginina sobre o GH e IGF-I em adultos. Participaram do estudo 17 indivíduos do sexo masculino, que foram randomizados para receber L-arginina (n= 10) ou placebo (n= 7), sete gramas ao dia, durante um período de sete dias. Antes e após o período de suplementação, os voluntários realizaram coleta de sangue em jejum para verificação dos níveis séricos de GH e IGF-I, bem como coleta de urina para verificação da excreção de uréia. Ao final do período experimental, verificamos que o grupo que recebeu L-arginina aumentou a excreção de uréia na urina (de 2684,1 ± 475,2 mg/dl para 2967,2 ± 409,7 mg/dl, p= 0,002), entretanto não modificou significativamente a secreção dos hormônios avaliados. O grupo que recebeu placebo não alterou significativamente nenhum parâmetro avaliado. A suplementação de L-arginina durante sete dias mostrou-se ineficaz para aumentar a secreção de GH e IGF-I em indivíduos adultos do sexo masculino.
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Affiliation(s)
- Ana Paula Trussardi Fayh
- Laboratório de Pesquisa do Exercício, Escola de Educação Física, Universidade Federal do Rio Grande do Sul, Rua Felizardo 750, 90690-200 Porto Alegre, RS.
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