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Tomazini BM, Tramujas L, Medrado FA, Gomes SPDC, Negrelli KL, Murinize GS, Santos RHN, Vianna BMP, Piotto BF, Veiga TS, do Santos BR, Peneluppi Horak AC, Lemos OMC, Lopes MDA, Olicheski BB, Campones DL, Peixoto LAA, Basilio ADAC, Gebara OCE, Lopes ATA, Saconato H, Valeis N, Miranda TA, Laranjeira LN, Santucci EV, Carlin AF, Esko JD, Gordts PLSM, Tsimikas S, Cavalcanti AB. Halofuginone for non-hospitalized adult patients with COVID-19 a multicenter, randomized placebo-controlled phase 2 trial. The HALOS trial. PLoS One 2024; 19:e0299197. [PMID: 38394069 PMCID: PMC10889621 DOI: 10.1371/journal.pone.0299197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Halofuginone (PJS-539) is an oral prolyl-tRNA synthetase inhibitor that has a potent in vitro activity against SARS-CoV-2 virus. The safety and efficacy of halofuginone in Covid-19 patients has not been studied. METHODS We conducted a phase II, randomized, double-blind, placebo-controlled, dose ranging, safety and tolerability trial of halofuginone in symptomatic (≤ 7 days), mostly vaccinated, non-hospitalized adults with mild to moderate Covid-19. Patients were randomized in a 1:1:1 ratio to receive halofuginone 0.5mg, 1mg or placebo orally once daily for 10 days. The primary outcome was the decay rate of the SARS-CoV-2 viral load logarithmic curve within 10 days after randomization. RESULTS From September 25, 2021, to February 3, 2022, 153 patients were randomized. The mean decay rate in SARS-CoV-2 viral load log10 within 10 days was -3.75 (95% CI, -4.11; -3.19) in the placebo group, -3.83 (95% CI, -4.40; -2.27) in the halofuginone 0.5mg group and -4.13 (95% CI, -4.69; -3.57) in the halofuginone 1mg group, with no statistically significant difference in between placebo vs. halofuginone 0.5mg (mean difference -0.08; 95% CI -0.82 to 0.66, p = 0.96) and between placebo vs. halofuginone 1mg (mean difference -0.38; 95% CI, -1.11; 0.36, p = 0.41). There was no difference on bleeding episodes or serious adverse events at 28 days. CONCLUSIONS Among non-hospitalized adults with mild to moderate Covid-19 halofuginone treatment was safe and well tolerated but did not decrease SARS-CoV-2 viral load decay rate within 10 days.
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Affiliation(s)
- Bruno Martins Tomazini
- Hcor Research Institute, São Paulo (SP), Brazil
- Brazilian Research in Intensive Care Network (BRICNet), São Paulo (SP), Brazil
- Hospital Sírio-Libanês, São Paulo (SP), Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Aaron Foster Carlin
- Departments of Pathology and Medicine, University of California, San Diego, La Jolla, California, United States of America
| | - Jeffrey David Esko
- Department of Cellular and Molecular Medicine and Glycobiology Research and Training Center, University of California, San Diego, La Jolla, California, United States of America
| | - Phillip Leo Stephan Marie Gordts
- Department of Medicine, and Glycobiology Research and Training Center, University of California, San Diego, La Jolla, California, United States of America
| | - Sotirios Tsimikas
- Division of Cardiovascular Medicine, Sulpizio Cardiovascular Center, University of California San Diego, La Jolla, California, United States of America
| | - Alexandre Biasi Cavalcanti
- Hcor Research Institute, São Paulo (SP), Brazil
- Brazilian Research in Intensive Care Network (BRICNet), São Paulo (SP), Brazil
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Tavares CDAM, de Azevedo LCP, Rea-Neto Á, Campos NS, Amendola CP, Bergo RR, Kozesinski-Nakatani AC, David-João PG, Westphal GA, Guimarães Júnior MRR, Lobo SMA, Tavares MS, Dracoulakis MDA, de Souza GM, de Almeida GMB, Gebara OCE, Tomba PO, Albuquerque CSN, Silva MCR, Pereira AJ, Damiani LP, Corrêa TD, Serpa-Neto A, Berwanger O, Zampieri FG. Dapagliflozin in patients with critical illness: rationale and design of the DEFENDER study. Crit Care Sci 2023; 35:256-265. [PMID: 38133155 PMCID: PMC10734800 DOI: 10.5935/2965-2774.20230129-en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 06/09/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Critical illness is a major ongoing health care burden worldwide and is associated with high mortality rates. Sodium-glucose cotransporter-2 inhibitors have consistently shown benefits in cardiovascular and renal outcomes. The effects of sodium-glucose cotransporter-2 inhibitors in acute illness have not been properly investigated. METHODS DEFENDER is an investigator-initiated, multicenter, randomized, open-label trial designed to evaluate the efficacy and safety of dapagliflozin in 500 adult participants with acute organ dysfunction who are hospitalized in the intensive care unit. Eligible participants will be randomized 1:1 to receive dapagliflozin 10mg plus standard of care for up to 14 days or standard of care alone. The primary outcome is a hierarchical composite of hospital mortality, initiation of kidney replacement therapy, and intensive care unit length of stay, up to 28 days. Safety will be strictly monitored throughout the study. CONCLUSION DEFENDER is the first study designed to investigate the use of a sodium-glucose cotransporter-2 inhibitor in general intensive care unit patients with acute organ dysfunction. It will provide relevant information on the use of drugs of this promising class in critically ill patients. CLINICALTRIALS.GOV REGISTRY NCT05558098.
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Affiliation(s)
| | | | - Álvaro Rea-Neto
- Centro de Estudos e de Pesquisas em Terapia Intensiva - Curitiba
(PR), Brazil
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Ary Serpa-Neto
- Hospital Israelita Albert Einstein - São Paulo (SP),
Brazil
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Rodrigues GHDP, Gebara OCE, Gerbi CCDS, Pierri H, Wajngarten M. Depression as a Clinical Determinant of Dependence and Low Quality of Life in Elderly Patients with Cardiovascular Disease. Arq Bras Cardiol 2015; 104:443-9. [PMID: 26131699 PMCID: PMC4484676 DOI: 10.5935/abc.20150034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 10/30/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The aging process promotes a progressive increase in chronic-degenerative diseases. The effect of these diseases on the functional capacity has been well recognized. Another health parameter concerns "quality of life related to health". Among the elderly population, cardiovascular diseases stand out due to the epidemiological and clinical impact. Usually, these diseases have been associated with others. This set of problems may compromise both independence and quality of life in elderly patients who seek cardiologic treatment. These health parameters have not been well contemplated by cardiologists. OBJECTIVE Evaluating, among the elderly population with cardiovascular disease, which are the most relevant clinical determinants regarding dependence and quality of life. METHODS This group was randomly and consecutively selected and four questionnaires were applied: HAQ, SF-36, PRIME-MD e Mini Mental State. RESULTS The study included 1,020 elderly patients, 63.3% women. The group had been between 60 and 97 years-old (mean: 75.56 ± 6.62 years-old). 61.4% were independent or mild dependence. The quality of life total score was high (HAQ: 88.66 ± 2.68). 87.8% of patients had a SF-36 total score > 66. In the multivariate analysis, the association between diagnoses and high degrees of dependence was significant only for previous stroke (p = 0.014), obesity (p < 0.001), lack of physical activity (p = 0.016), osteoarthritis (p < 0.001), cognitive impairment (p < 0.001), and major depression (p < 0.001). Analyzing the quality of life, major depression and physical illness for depression was significantly associated with all domains of the SF-36. CONCLUSION Among an elderly outpatient cardiology population, dependence and quality of life clinical determinants are not cardiovascular comorbidities, especially the depression.
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Affiliation(s)
| | | | | | - Humberto Pierri
- Hospital das Clínica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Mauricio Wajngarten
- Hospital das Clínica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
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Santos ACSD, Nobre MRC, Nussbacher A, Rodrigues GHDP, Gebara OCE, Azul JBCS, Wajngarten M. Predictors of the risk of falls among elderly with chronic atrial fibrillation. Clinics (Sao Paulo) 2012; 67:305-11. [PMID: 22522754 PMCID: PMC3317245 DOI: 10.6061/clinics/2012(04)02] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 12/22/2011] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVES Though elderly persons with chronic atrial fibrillation have more comorbidities that could limit indications for the chronic use of anticoagulants, few studies have focused on the risk of falls within this particular group. To evaluate the predictors of the risk of falls among elderly with chronic atrial fibrillation, a cross-sectional, observational study was performed. METHODS From 295 consecutive patients aged 60 years or older with a history of atrial fibrillation who were enrolled within the last 2 years in the cardiogeriatrics outpatient clinic of the Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 107 took part in this study. Their age was 77.9±6.4 years, and 62 were female. They were divided into two groups: a) no history of falls in the previous year and b) a history of one or more falls in the previous year. Data regarding the history of falls and social, demographic, anthropometric, and clinical information were collected. Multidimensional assessment instruments and questionnaires were applied. RESULTS At least one fall was reported in 55 patients (51.4%). Among them, 27 (49.1%) presented recurrent falls, with body lesions in 90.4% and fractures in 9.1% of the cases. Multivariate logistic regression showed that self-reported difficulty maintaining balance, use of amiodarone, and diabetes were independent variables associated with the risk of falls, with a sensitivity of 92.9% and a specificity of 44.9%. CONCLUSION In a group of elderly patients with chronic atrial fibrillation who were relatively independent and able to attend an outpatient clinic, the occurrence of falls with recurrence and clinical consequences was high. Difficulty maintaining balance, the use of amiodarone and a diagnosis of diabetes mellitus were independent predictors of the risk for falls. Thus, simple clinical data predicted falls better than objective functional tests.
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Dias AR, Melo RN, Gebara OCE, D'Amico EA, Nussbacher A, Halbe HW, Pinotti JA. Effects of conjugated equine estrogens or raloxifene on lipid profile, coagulation and fibrinolysis factors in postmenopausal women. Climacteric 2009; 8:63-70. [PMID: 15804733 DOI: 10.1080/13697130500042581] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To compare the effect of conjugated equine estrogens (CEE) and raloxifene on lipid profile and hemostasis. MATERIALS AND METHODS A double-blind, randomized and parallel study was performed with 90 healthy postmenopausal women, aged 54 +/- 5 years, divided into three groups and submitted to daily therapy with either CEE 0.625 mg, raloxifene 60 mg or placebo for 4 months. The lipid profile, coagulation and fibrinolytic factors were analyzed. RESULTS CEE increased the levels of high density lipoprotein cholesterol (HDL-C) from 49.0 to 56.8 mg/dl (p < 0.001), very low density lipoprotein cholesterol (VLDL-C) from 17.2 to 22.3 mg/dl (p < 0.001), and triglycerides from 86.0 to 111.7 mg/dl (p < 0.001), and decreased the levels of low density lipoprotein cholesterol (LDL-C) from 121.0 to 106.5 mg/dl (p < 0.001). The only significant effect of raloxifene was an increase in the levels of HDL-C from 46.0 to 47.8 mg/dl (p = 0.019). There was no significant reduction in LDL-C, from 115.5 to 110.2 mg/dl (p = 0.06), VLDL-C, from 21.7 to 20.0 mg/dl (p = 0.201), and triglycerides, from 108 to 100 mg/dl (p = 0.201). CEE decreased the levels of fibrinogen, from 370.5 to 326.8 g/l (p = 0.039) and the levels of antithrombin III, from 99.5 to 93.2% (p < 0.001). Raloxifene decreased the levels of fibrinogen, from 354.7 to 302.0 g/l (p = 0.009) and the levels of antithrombin III, from 102.4 to 98.5% (p = 0.039). CEE increased levels of protein C from 103.7 to 115.3 mg/l (p < 0.001) and raloxifene did not change the levels of protein C (107.9 to 105.1 mg/l; p = 0.158). CEE decreased the antigen levels of tissue plasminogen activator (t-PA) from 8.8 to 6.8 U/ml (p < 0.001), and of plasminogen activator inhibitor (PAI-1) from 30.8 to 21.6 U/ml (p < 0.010), whereas raloxifene had no significant effect on either t-PA, from 9.6 to 9.2 U/ml (p = 0.235) or PAI-1 antigen levels, from 32.1 to 30.4 U/ml (p = 0.538). CONCLUSION Both CEE and raloxifene exert significant effects on the lipid and coagulation profile. CEE had a more significant effect on fibrinolysis than raloxifene. These effects may have a significant impact on the cardiovascular risk that needs to be confirmed in larger studies.
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Affiliation(s)
- A R Dias
- Gynecology and Obstetrics Department School of Medicine, University of São Paulo, Brazil
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Juliano SRR, Juliano MCR, Cividanes JP, Houly JGS, Gebara OCE, Cividanes GVL, Catão EC. Medidas dos níveis de pressão do balonete em unidade de terapia intensiva: considerações sobre os benefícios do treinamento. Rev Bras Ter Intensiva 2007. [DOI: 10.1590/s0103-507x2007000300008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Juliano SRR, Juliano MCR, Cividanes JP, Houly JGS, Gebara OCE, Cividanes GVL, Catão EC. [Measurement of tube cuff pressure levels in intensive care unit: considerations on the benefits of training]. Rev Bras Ter Intensiva 2007; 19:317-321. [PMID: 25310065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2007] [Accepted: 08/20/2007] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND AND OBJECTIVES The tube cuff pressure directly transmitted on the tracheal wall in an irregular form can cause injuries and lead to bronchoaspiration. The aim of this study was to demonstrate that the implementation of routine tube cuff pressure measurements result in a reliable control to maintain the measurements within the parameters considered safe, thus preventing the described complications. METHODS A total of 3,195 tube cuff measurements were obtained from 1,194 male and female patients admitted at the Intensive Care Unit (ICU) and Coronary Unit (CU), who were undergoing mechanical ventilation with endotracheal prosthesis and tracheotomy cannula, during the morning and afternoon periods. RESULTS From March to August 2005 the follow-up of the measurements obtained by the physical therapy professionals was carried out and it was observed that the measurements were irregular, on average, in 80% of the cases. Thus, a training program was established, which was focused on the Nursing Teams of the ICU and CU, consisting in providing directions for the adequate procedures performed at the bedside (in loco training). The training procedures were carried out at two different periods (morning and afternoon) in order to include the whole team. CONCLUSIONS It is suggested that it is necessary to monitor tube cuff pressure through the implementation of routine measurements in the morning, afternoon and evening periods as a prophylactic measure, in order to prevent the possible complications of tracheal prosthesis balloon pressure.
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Colombo T, Boldrini AF, Juliano SRR, Juliano MCR, Houly JGS, Gebara OCE, Cividanes GVL, Catão EC. [Implementation, assessment and comparison of the T-Tube and pressure-support weaning protocols applied to the intensive care unit patients who had received mechanical ventilation for more than 48 hours]. Rev Bras Ter Intensiva 2007; 19:31-37. [PMID: 25310657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2006] [Accepted: 02/12/2007] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Mechanical ventilation incurs significant morbidity and mortality, weaning intensive care unit patients is highly desirable, although it is usuallyconducted in an empirical manner. Thus, this article assessed a weaning protocol implementation and compared two different methods. METHODS It was carried out a study involving 120 patients who had received mechanical ventilation for more than 48 hours. These patients were randomlyassigned to undergo one of two weaning techniques: pressure-supportventilation + PEEP (PSP) technique, which was applied to the patients in equal days, forming the PSP group (PSPG) and the T-tube method (TT), applied in odd days and forming the TT group (TTG). Standardized protocols were followedfor each technique RESULTS The patients response to extubation revealed similar progress in both PSP and TT groups, but after the Chi-square statistical test, the benefits of using a weaning protocol was clear. One hundred nine (90.83%) of all patients, had a successful weaning and any noninvasive ventilation type was needed in a span time of 24 hours after extubation, and only eleven (9.17%), had an unsuccessful weaning. CONCLUSIONS Although this study didn't show any difference between the two methods applied, we could conclude that, the implementation of standardized weaning protocols can substantially decrease the patient's reintubation rate, promoting a downward trend in mortality and morbidity for these patients and shortening their hospital and intensive care units length of stay.
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Colombo T, Boldrini AF, Juliano SRR, Juliano MCR, Houly JGS, Gebara OCE, Cividanes GVL, Catão EC. Implementação, avaliação e comparação dos protocolos de desmame com Tubo-T e Pressão Suporte associada à pressão expiratória final positiva em pacientes submetidos à ventilação mecânica por mais de 48 horas em unidade de terapia intensiva. Rev Bras Ter Intensiva 2007. [DOI: 10.1590/s0103-507x2007000100004] [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: 11/21/2022] Open
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Moscovitz T, Aldrighi JM, Abrahanshon PA, Zorn TMT, Logullo AF, Gebara OCE, Rosano GGM, Ramires JF. Repercussions of digoxin, digitoxin and estradiol on the endometrial histomorphometry of oophorectomized mice. Gynecol Endocrinol 2005; 20:213-20. [PMID: 16019364 DOI: 10.1080/09513590400021219] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
The digitalics (digoxin and digitoxin) have an estrogenic action, confirmed by the presence of gynecomastia observed in men who are users of steroids, and it is also confirmed by the increase of vaginal trophism in postmenopausal female users, although little is known about the endometrium. These effects might result from the similarity of the chemical structures between the digitalics and estrogens. This study evaluated 27 female mice. Twenty-four mice were oophorectomized and in three of them the ovaries were manipulated, but they were not extirpated. Forty days after the surgery each group of three animals received a medication with a specific drug (digoxin, digitoxin or estradiol) for 2 weeks. Twenty-four hours after the last medication, all the animals were hysterectomized and the wombs were processed, cut and put on laminae. By histomorphometry, we analysed the area of the transverse sections of the endometrium, the area of the endometrial glands and the height of the uterine epithelium. The respective averages and the standard deviations were calculated. The results showed that digoxin neither presented an estrogenic action (p > 0.05) nor raised the power of the estradiol action (p > 0.05). Digitoxin promoted an estrogenic action on the glandular area (p < 0.05), and also raised the power of the estradiol action on the transverse section of the endometrium and on the glandular area (p < 0.05).
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Affiliation(s)
- Thomas Moscovitz
- Cardio-Pneumology Department, Heart Institute of the Medical School, University of São Paulo, Brazil
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da Costa LS, de Oliveira MA, Rubim VSM, Wajngarten M, Aldrighi JM, Rosano GM, Neto CD, Gebara OCE. Effects of hormone replacement therapy or raloxifene on ambulatory blood pressure and arterial stiffness in treated hypertensive postmenopausal women. Am J Cardiol 2004; 94:1453-6. [PMID: 15566926 DOI: 10.1016/j.amjcard.2004.07.153] [Citation(s) in RCA: 35] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2004] [Revised: 07/28/2004] [Accepted: 07/28/2004] [Indexed: 11/18/2022]
Abstract
The administration of oral raloxifene in 30 postmenopausal hypertensive women was evaluated to demonstrate its effect on arterial stiffness. Casual and ambulatory blood pressure (BP) and pulse-wave velocity (PWV) data were obtained before and after patients received raloxifene, estrogen-progestin replacement therapy, or placebo in a randomized crossover study. It was shown that the 2 therapies decreased BP and carotid-femoral PWV, and the effect of raloxifene on vascular compliance was independent of the effects on BP.
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Aldrighi JM, Alecrin IN, Caldas MA, Gebara OCE, Ramires JAF, Rosano GMC. Effects of estradiol on myocardial global performance index in hypertensive postmenopausal women. Gynecol Endocrinol 2004; 19:282-92. [PMID: 15726917 DOI: 10.1080/09513590400017464] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
The objective of this study was to assess the acute and chronic effects of estradiol on the myocardial performance index (MPI) in hypertensive postmenopausal women. There are conflicting reports on the effects of estrogen on left ventricular function in postmenopausal women, and we are unaware of any study on the myocardial performance index in the postmenopausal state. We undertook a prospective, randomized, double-blind, placebo-controlled study in 34 women, distributed into an estradiol group or a placebo group. After 90 min and at 12 weeks of administration of 1 mg of oral estradiol we evaluated, by Doppler echocardiography, its effects on the MPI. The estradiol group showed no alteration in the MPI after 90 min of the administration of estradiol. On the other hand, after 12 weeks of treatment we observed a statistically significant decrease of isovolumic relaxation time, from 127+/-23 ms to 106+/-16 ms (p < 0.001 and of the MPI from 0.63+/-0.13 to 0.48+/-0.09 (p < 0.01) and an increase in ejection time, from 297+/-32 ms to 330+/-31 ms (p < 0.01). In conclusion, estrogen replacement therapy over a period of 12 weeks showed a significant improvement in the MPI in hypertensive postmenopausal women, whereas the acute administration did not have any effect.
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Affiliation(s)
- J M Aldrighi
- Heart Institute (InCor)-University of São Paulo Medical School, São Paulo, Brazil.
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Alecrin IN, Aldrighi JM, Caldas MA, Gebara OCE, Lopes NHM, Ramires JAF. Acute and chronic effects of oestradiol on left ventricular diastolic function in hypertensive postmenopausal women with left ventricular diastolic dysfunction. Heart 2004; 90:777-81. [PMID: 15201248 PMCID: PMC1768313 DOI: 10.1136/hrt.2003.016493] [Citation(s) in RCA: 29] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/04/2003] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Left ventricular function changes in the postmenopausal state. However, there are conflicting reports about the effects of oestrogen on left ventricular diastolic function in postmenopausal women. OBJECTIVE To evaluate the acute and chronic effects of oestradiol in physiological doses on diastolic heart function in hypertensive postmenopausal women with left ventricular diastolic dysfunction. METHODS A prospective, randomised, double blind, placebo controlled study was used to evaluate the effects of oestradiol in 34 hypertensive women with left ventricular dysfunction. The acute effects of a single 1 mg oral dose of oestradiol or placebo were determined after 90 minutes. The chronic effects of 1 mg oestradiol orally/day or placebo were determined after 12 weeks. Diastolic functional indices (mitral flow and pulmonary venous flow) were assessed by Doppler echocardiography. RESULTS Though an appropriate serum concentration was achieved, no acute effect of oestradiol administration on left ventricular diastolic function was identified. After 12 weeks of treatment the following changes (mean (SD)) were identified in the oestradiol group: a decrease in isovolumic relaxation time from 127 (23) to 106 (16) ms (p < 0.001), and in the deceleration time of the mitral E wave from 260 (42) to 238 (20) ms (p < 0.05); and an increase in the E/A ratio from 0.8 (0.2) (basal) to 1.0 (0.2) after 12 weeks (p < 0.001). CONCLUSIONS Hypertensive postmenopausal women who had hormone replacement therapy over a period of 12 weeks had significant improvement in left ventricular diastolic function. No changes were identified following acute administration.
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Affiliation(s)
- I N Alecrin
- Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil.
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Uint L, Gebara OCE, Pinto LB, Wajngarten M, Boschcov P, da Luz PL, Gidlund M. Hormone replacement therapy increases levels of antibodies against heat shock protein 65 and certain species of oxidized low density lipoprotein. Braz J Med Biol Res 2003; 36:491-4. [PMID: 12700827 DOI: 10.1590/s0100-879x2003000400011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Hormone replacement therapy (HRT) reduces cardiovascular risks, although the initiation of therapy may be associated with transient adverse ischemic and thrombotic events. Antibodies against heat shock protein (Hsp) and oxidized low density lipoprotein (LDL) have been found in atherosclerotic lesions and plasma of patients with coronary artery disease and may play an important role in the pathogenesis of atherosclerosis. The aim of the present study was to assess the effects of HRT on the immune response by measuring plasma levels of antibodies against Hsp 65 and LDL with a low and high degree of copper-mediated oxidative modification of 20 postmenopausal women before and 90 days after receiving orally 0.625 mg equine conjugate estrogen plus 2.5 mg medroxyprogesterone acetate per day. HRT significantly increased antibodies against Hsp 65 (0.316 +/- 0.03 vs 0.558 +/- 0.11) and against LDL with a low degree of oxidative modification (0.100 +/- 0.01 vs 0.217 +/- 0.02) (P<0.05 and P<0.001, respectively, ANOVA). The hormone-mediated immune response may trigger an inflammatory response within the vessel wall and potentially increase plaque burden. Whether or not this immune response is temporary or sustained and deleterious requires further investigation.
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Affiliation(s)
- L Uint
- Unidade de Ateroscleroses, Instituto do Coração, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
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