Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 20
Filtrar
1.
Curr Vasc Pharmacol ; 17(2): 180-190, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-29295699

RESUMO

BACKGROUND: Hypertension (HT) is an important risk factor for cardiovascular disease and might precipitate pathology of the aortic valve. OBJECTIVE: To investigate the association of HT with aortic dysfunction (including both aortic regurgitation and stenosis) and the impact of antihypertensive treatment on the natural course of underlying aortic disease. METHODS: We performed a systematic review of the literature for all relevant articles assessing the correlation between HT and phenotype of aortic disease. RESULTS: Co-existence of HT with aortic stenosis and aortic regurgitation is highly prevalent in hypertensive patients and predicts a worse prognosis. Certain antihypertensive agents may improve haemodynamic parameters (aortic jet velocity, aortic regurgitation volume) and remodeling of the left ventricle, but there is no strong evidence of benefit regarding clinical outcomes. Renin-angiotensin system inhibitors, among other vasodilators, are well-tolerated in aortic stenosis. CONCLUSION: Several lines of evidence support a detrimental association between HT and aortic valve disease. Therefore, HT should be promptly treated in aortic valvulopathy. Despite conventional wisdom, specific vasodilators can be used with caution in aortic stenosis.


Assuntos
Anti-Hipertensivos/uso terapêutico , Insuficiência da Valva Aórtica/fisiopatologia , Estenose da Valva Aórtica/fisiopatologia , Valva Aórtica/efeitos dos fármacos , Pressão Arterial/efeitos dos fármacos , Hipertensão/tratamento farmacológico , Valva Aórtica/fisiopatologia , Insuficiência da Valva Aórtica/epidemiologia , Estenose da Valva Aórtica/epidemiologia , Humanos , Hipertensão/epidemiologia , Hipertensão/fisiopatologia , Prevalência , Recuperação de Função Fisiológica , Fatores de Risco , Resultado do Tratamento
2.
Curr Hypertens Rep ; 17(2): 5, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25620633

RESUMO

Inevitably, a small proportion of patients with systematic hypertension will develop hypertensive crisis at some point. Hypertensive crises can be divided into hypertensive emergency or hypertensive urgency according to the presence or lack of acute target organ damage. In this review, we discuss cardiovascular hypertensive emergencies, including acute coronary syndrome, aortic dissection, congestive heart failure, and sympathomimetic hypertensive crises, including those caused by cocaine use. Each presents in a unique fashion, although some hypertensive emergency patients report nonspecific symptoms. Treatment includes several effective and rapid-acting medications to safely reduce the blood pressure, protect remaining end-organ function, relieve symptoms, minimize the risk of complications, and thereby improve patient outcomes.


Assuntos
Anti-Hipertensivos/uso terapêutico , Doenças Cardiovasculares/tratamento farmacológico , Hipertensão/tratamento farmacológico , Determinação da Pressão Arterial , Serviços Médicos de Emergência , Humanos
3.
Blood Press ; 20(4): 218-21, 2011 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-21388252

RESUMO

OBJECTIVE. Recent evidence demonstrates that masked hypertension (MH) is a significant predictor of cardiovascular disease. The aim of our study was to examine the impact of MH on haemostasis parameters and to compare the findings to those of healthy normotensives matched for age, sex, body mass index and the rest of risk factors. DESIGN AND METHOD. 130 (60 male, 70 female) healthy subjects mean age 45 ± 12 years who had clinic blood pressure < 140/90 mmHg were studied. The whole study population underwent 24-h ambulatory blood pressure monitoring (ABPM). According to the ABPM recordings, 24 individuals (eight males, 16 females) had MH (daytime systolic blood pressure ≥ 135 mmHg or daytime diastolic blood pressure ≥ 85 mmHg - group A) and the remaining 106 subjects (52 males, 54 females) had normal ABPM recordings - group B. Fibrinogen, thrombomodulin ™, the antigens of plasminogen activator inhibitor 1 (PAI-1Ag) and tissue plasminogen activator (tPA-Ag) were determined in the two groups. Results. The PAI-1 Ag, tPA-Ag, fibrinogen and TM levels were significantly higher in the masked hypertensive group than to normotensive control group. CONCLUSIONS. Our findings suggest that subjects with MH have significantly higher fibrinogen, TM, PAI-1Ag and tPA-Ag plasma levels compared with normotensives. This observation may have prognostic significance for future cardiovascular events in subjects with MH and needs further investigation.


Assuntos
Hipertensão/fisiopatologia , Antígenos/sangue , Pressão Sanguínea/fisiologia , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/etiologia , Estudos de Coortes , Feminino , Fibrinogênio/metabolismo , Hemostasia , Humanos , Hipertensão/sangue , Hipertensão/complicações , Masculino , Pessoa de Meia-Idade , Inibidor 1 de Ativador de Plasminogênio/imunologia , Trombomodulina/metabolismo , Ativador de Plasminogênio Tecidual/imunologia
4.
J Hum Hypertens ; 25(1): 38-46, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20200551

RESUMO

We investigated whether the resistin (Res) and adiponectin (Adp) levels are associated with different clinical blood pressure (BP) phenotypes. Among 465 consecutive never-treated white subjects, we excluded those with diabetes mellitus; impaired glucose metabolism; history of any cardiovascular disease or other concurrent medical condition; secondary hypertension; ongoing vasoactive treatment. Three separate clinic BP measurements and ambulatory BP monitoring were implemented to divide 328 subjects (aged 48±6 years; 172 males) into hypertensives (n=105), masked hypertensives (n=41), white-coat hypertensives (n=52) and normotensives (n=130). Participants underwent echocardiography and oral glucose tolerance testing, whereas, from fasting venous blood samples metabolic profile, plasma Res and Adp levels were assessed. Hypertensives and masked hypertensives showed higher log(10)(Res) and lower log(10)(Adp) levels compared with normotensives, whereas white-coat hypertensives had similar levels of these adipokines compared with normotensives. Common correlates for both of the adipokines were 24-h systolic BP, standing/sitting difference of both diastolic BP and heart rate, and waist circumference. Hypertensive and masked hypertensive compared with normotensive phenotype were independently associated with log(10)(Res) with odds ratios of 1.24 (1.08-1.44), and 1.16 (1.09-1.34) and log(10)(Adp) with 0.74 (0.65-0.87), and 0.81 (0.67-0.95), respectively. Increased Res and decreased Adp plasma levels are associated with out-of-clinic hypertension, whereas they did not determine white-coat hypertension.


Assuntos
Adiponectina/sangue , Pressão Sanguínea/fisiologia , Hipertensão/sangue , Fenótipo , Resistina/sangue , Adulto , Doenças Cardiovasculares/epidemiologia , Estudos Transversais , Feminino , Humanos , Hipertensão/complicações , Hipertensão/fisiopatologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Visita a Consultório Médico , Fatores de Risco
5.
Angiology ; 60(6): 757-62, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19114409

RESUMO

INTRODUCTION: The aim of our study was to investigate whether collagen degradation is altered in participants with masked hypertension and whether this alteration could be related to disturbances in the matrix metalloproteinases plasma concentration and to compare the findings with those participants with normal blood pressure levels matched for age, sex, and body mass index. METHODS: Twenty-four (11 men, 13 women) participants with masked hypertension [mean age 46 +/- 7 years and body mass index 25.9 +/- 2.1 kg/m(2) (group A)] and 106 healthy normotensives (49 men, 57 women) with normal blood pressure [mean age 44 +/- 6 years and body mass index 25.5 +/- 2.4 kg/m(2) (group B)]. RESULTS: The plasma levels of matrix metalloproteinase-9 were significantly higher, while the levels of tissue inhibitors of metalloproteinases-1 and -4 were significantly lower in group A compared with group B (matrix metalloproteinase-9: 569 +/- 135 vs. 282 +/- 117 ng/mL, TIMP-1: 169 +/- 42 vs. 230 +/- 37 ng/mL, P < .01, and TIMP-4: 2.1 +/- 1.3 vs. 4.2 +/- 1.98 ng/mL, P < .04, respectively). CONCLUSIONS: Patients with masked hypertension had significantly increased matrix metalloproteinase-9 plasma levels and significantly decreased plasma levels of tissue inhibitors of metalloproteinases-1 and -4 compared with participants with normal blood pressure. These findings need further investigation.


Assuntos
Pressão Sanguínea/fisiologia , Hipertensão/enzimologia , Metaloproteases/sangue , Adulto , Biomarcadores/sangue , Monitorização Ambulatorial da Pressão Arterial , Índice de Massa Corporal , Progressão da Doença , Ensaio de Imunoadsorção Enzimática , Feminino , Seguimentos , Humanos , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença
6.
Blood Press ; 17(1): 50-4, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18568692

RESUMO

BACKGROUND: Accumulating epidemiological studies have shown that healthy offspring of hypertensive patients exhibit some metabolic disturbances such as hyperinsulinemia, insulin resistance, lipid disorders, elevated plasma leptin levels and reduced insulin receptor number, features that may be predictors of future cardiovascular events. The aim of this study was to determine insulin, adiponectin and resistin plasma levels in young healthy offspring of patients with essential hypertension, and to compare the findings to those of young healthy offspring of healthy normotensives matched for age, sex and body mass index (BMI). METHODS: Forty-six (24 male/22 female) healthy offspring of patients with essential hypertension-positive family history (FH+), mean age 18+/-3 years and BMI 22.4+/-1.4 kg/m2 (group A) and 50 (28 male/22 female) healthy offspring of healthy normotensives-negative family history (FH-) mean age 18+/-3.2 years and BMI 22.6+/-1.7 kg/m2 (group B) were studied. The two groups were matched for age, sex and BMI. Systolic and diastolic blood pressure (SBP and DBP) measurements, resting heart rate (HR), plasma insulin (RIA method), adiponectin and resistin plasma levels (ELISA) were determined in the whole study population. RESULTS: Mean SBP, DBP and resting HR were significantly higher in group A compared with group B (121+/-13 vs 110+/-10 mmHg, 78+/-6 vs 73+/-8 mmHg, 76+/-4 vs 72+/-6 beats/min, p<0.01, p<0.05 and p<0.01 respectively). Insulin and resistin plasma levels were significantly higher, while adiponectin levels were significantly lower. In group A compared with group B (21+/-7 vs 15+/-6 pIU/ml, 10+/-5 vs 6+/-3 ng/ml, 20+/-5 vs 29+/-8 microg/ml, p<0.01, p<0.01, p<0.01, respectively). CONCLUSION: Our findings suggest that increased SBP, DBP and resting HR as well as increased insulin and resistin plasma levels and decreased adiponectin plasma levels pre-exist in young healthy offspring with positive family history for essential hypertension. Further studies are needed to determine the clinical significance of these observations in attempt to classify these young healthy individuals for future cardiovascular risk.


Assuntos
Adiponectina/sangue , Hipertensão/sangue , Resistência à Insulina , Insulina/sangue , Resistina/sangue , Adolescente , Adulto , Fatores Etários , Pressão Sanguínea/genética , Índice de Massa Corporal , Feminino , Humanos , Hipertensão/genética , Masculino , Fatores de Risco , Fatores Sexuais , Irmãos
7.
Int J Cardiol ; 130(3): 405-8, 2008 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-18234377

RESUMO

UNLABELLED: Recent evidence demonstrate that masked hypertension (MH) is a significant predictor of cardiovascular disease, while, elevated levels of circulating antibodies against endothelial cell surface antigens (antiendothelial cell antibodies - AECA) seem to play an important role at the early stages of atherosclerosis process and of borderline hypertension as well. Aim of this study was to investigate the presence of AECA in patients (pts) with MH and to compare the AECA title among pts with MH and healthy normotensives (HN), matched for age, sex and body mass index. METHODS: One hundred-thirty (60 M, 70 F) healthy subjects mean age 45+/-12 yrs who had clinic blood pressure <140/90 mm Hg were studied. The whole study population underwent 24 hour ambulatory blood pressure monitoring (ABPM). According to the ABPM recordings, 24 individuals (8 M, 16 F) had MH (daytime systolic blood pressure >/=135 mm Hg or daytime diastolic blood pressure >/=85 mm Hg - group A) and the remainder 106 subjects (52 M, 54 F) had normal ABPM recordings, group B. IgG and IgM AECA levels were determined by ELISA method. AECA levels were expressed as mean value+/-SD. None of the study population had a history of connective tissue disease or any metabolic disorder. RESULTS: Significantly increased titles of AECA class IgG were found in 8/24 pts of group A (30%) vs. 5/106 (4.6%) of group B (p<0,001). Significantly increased titles of AECA class IgM were also found in 6/24 pts of group A (25%) vs. 3/80 (3.8%) of group B (p<0,001). CONCLUSIONS: Our results suggest that patients with MH have significantly higher AECA levels of both classes (IgG, IgM) compared to healthy normotensives. These findings may indicate a possible explanation of the increased cardiovascular risk in MH. The possibility that high AECA levels may be a driving mechanism for the development of MH needs further investigation.


Assuntos
Aterosclerose/imunologia , Autoanticorpos/sangue , Células Endoteliais/imunologia , Hipertensão/imunologia , Adulto , Aterosclerose/epidemiologia , Pressão Sanguínea , Feminino , Humanos , Hipertensão/epidemiologia , Imunoglobulina G/sangue , Imunoglobulina M/sangue , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Estudos Soroepidemiológicos
8.
Int J Cardiol ; 114(3): e105-6, 2007 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-17084923

RESUMO

We present a case with anomalous origin of the left circumflex artery from the right coronary artery ostium, which caused a non-ST elevation coronary syndrome. A review of the literature indicates this to be an extremely rare case.


Assuntos
Doença das Coronárias/etiologia , Anomalias dos Vasos Coronários/complicações , Seio Aórtico/anormalidades , Adulto , Angiografia Coronária , Doença das Coronárias/diagnóstico , Doença das Coronárias/fisiopatologia , Anomalias dos Vasos Coronários/diagnóstico , Anomalias dos Vasos Coronários/fisiopatologia , Diagnóstico Diferencial , Eletrocardiografia , Humanos , Masculino , Síndrome
9.
Clin Exp Hypertens ; 28(8): 663-7, 2006 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17132533

RESUMO

UNLABELLED: High normal blood pressure (HNBP) seems to be related to an increased cardiovascular risk in healthy normotensive subjects. According to the literature, elevated levels of antibodies against endothelial cell surface antigen antiendothelial cell antibodies (AECA) play an important role in the early stages of atherosclerosis process and in borderline hypertension. The aim of this study was to compare AECA levels of healthy normotensives with HNBP to those of healthy normotensives with normal blood pressure (NBP), matched for age, sex, and body mass index (BMI). METHODS: Ninety healthy normotensives with HNBP (43M, 47F; mean age, 48 +/- 2.6 yrs; BMI 23.6 +/- 1.5 Kg/m2) (Group A) and 80 healthy normotensives with NBP (41M, 39F; mean age, 46 +/- 3 yrs; BMI 24 +/- 1.8 Kg/m2) (Group B) were studied. Both group subjects were matched for sex, age, and BMI. AECA levels were determined in each subject using an enzyme-linked immunosorbent assay (ELISA). AECA levels were expressed as mean values. RESULTS: Twenty-five subjects from group A (28%) showed elevated IgG antiendothelial cell antibodies levels vs. three from group B (3.75%, p < 0.001). IgM AECA levels were elevated in 18 subjects from group A (20%) vs. two from group B (1.5%, p < 0.001). CONCLUSIONS: The present findings suggest that healthy normotensives with HNBP have significantly higher AECA levels of both classes (IgG, IgM) compared to healthy normotensives with NBP. This may have prognostic significance for the future development of essential hypertension in this group of healthy subjects.


Assuntos
Autoanticorpos/sangue , Pressão Sanguínea/imunologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
10.
Clin Rheumatol ; 25(3): 404-6, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16220227

RESUMO

We describe two patients with diffuse systemic sclerosis (SSc) where the echocardiogram revealed asymmetric hypertrophy of the interventricular septum with signs of subaortic obstruction consistent with hypertrophic obstructive cardiomyopathy. Hypertrophic cardiomyopathy is associated with the human lymphocyte antigen (HLA DR3), and this may provide a possible link with SSc, as this HLA phenotype is common in the latter condition. However, further studies should examine whether a true association exists.


Assuntos
Cardiomiopatia Hipertrófica/complicações , Escleroderma Sistêmico/complicações , Idoso , Antiarrítmicos/uso terapêutico , Cardiomiopatia Hipertrófica/diagnóstico por imagem , Cardiomiopatia Hipertrófica/patologia , Ecocardiografia , Feminino , Septos Cardíacos/diagnóstico por imagem , Septos Cardíacos/patologia , Humanos , Hipertrofia/diagnóstico por imagem , Hipertrofia/patologia , Masculino , Pessoa de Meia-Idade , Escleroderma Sistêmico/diagnóstico por imagem , Escleroderma Sistêmico/patologia , Verapamil/uso terapêutico
11.
Clin Rheumatol ; 25(4): 551-2, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16261282

RESUMO

We describe a patient with diffuse systemic sclerosis and presyncopal episodes where the electrocardiogram revealed complete atrioventricular heart block associated with left posterior and right heart bundle block. The patient underwent implantation of a permanent pacemaker.


Assuntos
Bloqueio Cardíaco/complicações , Bloqueio Cardíaco/diagnóstico por imagem , Esclerodermia Difusa/complicações , Idoso , Eletrocardiografia , Feminino , Bloqueio Cardíaco/terapia , Humanos , Marca-Passo Artificial , Radiografia
12.
Postgrad Med J ; 81(961): 711-4, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16272235

RESUMO

OBJECTIVE: To evaluate the right and left ventricular systolic and diastolic function in middle aged patients with sickle beta thalassaemia. METHODS: Forty three patients with sickle beta thalassaemia were recruited for echocardiographic study while 55 controls, matched for age and sex, served as the control group. Parameters measured included: dimensions and wall thickness of left (LV) and right (RV) ventricle and left atrium, LV mass, and cardiac index. LV and RV contractility variables--ejection fraction, circumferential fibre shortening velocity, end systolic stress, end systolic stress/volume index ratio, mitral and tricuspid annulus systolic excursion, and Tei index--were also calculated. The study also evaluated parameters of RV and LV diastolic function including early and late atrioventricular flow velocities (E and A wave respectively), E/A ratio, deceleration time (DT), isovolumic relaxation time (IVRT) as well as pulmonary and hepatic veins systolic to diastolic (S/D) ratio. RESULTS: Chamber enlargement, greater LV mass index, cardiac index, and RV wall thickness were found in the anaemic group compared with controls. The LV and RV contractility variables of the patients were similar to controls. Conversely the LV and RV Tei index was significantly greater in the patient group. Diastolic dysfunction was present in the anaemic patients resulting from the increased LV and RV A-wave, the longer LVIVRT, RVIVRT, and RVDT, as well as the higher hepatic and pulmonary veins S/D ratio. CONCLUSIONS: The results show that in middle aged patients with sickle beta thalassaemia the diastolic function is abnormal in both ventricles but still more in RV, whereas the systolic function remains unchanged.


Assuntos
Talassemia/fisiopatologia , Disfunção Ventricular/fisiopatologia , Velocidade do Fluxo Sanguíneo/fisiologia , Estudos de Casos e Controles , Diástole , Ecocardiografia/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Escócia/epidemiologia , Volume Sistólico/fisiologia , Sístole , Disfunção Ventricular/diagnóstico por imagem
13.
Eur J Clin Invest ; 35(6): 355-61, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15948895

RESUMO

PURPOSE: There are studies indicating more pronounced left atrial (LA) systolic dysfunction at rest in idiopathic (IDDC) than in ischaemic-dilated cardiomyopathy (ISDC). It was hypothesized that the findings would be similar with regards LA systolic reserve. METHODS: Twenty-six patients with IDDC, 28 with ISDC and 25 normal controls underwent low-dose dobutamine stress echocardiography (5-10 microg kg(-1) min(-1) IV). Left atrial volumes were echocardiographically determined at rest and during stress at the mitral valve opening (maximal, Vmax), electrocardiographic P wave (onset of atrial systole, Vp) and mitral valve closure (minimal, Vmin) from the apical 4- and 2-chamber views (biplane area-length method). Left atrial systolic function was assessed with the LA-active emptying volume (ACTEV) = Vp-Vmin and fraction (ACTEF) = ACTEV/Vp. RESULTS: Vmax at rest was similar in IDDC and ISDC and greater than in the controls (54.2 +/- 12 vs. 48.5 +/- 18 vs. 27.1 +/- 6.3 cm(3) m(-2), respectively, P < 0.001) and did not change with stress (53.9 +/- 13.8 vs. 46.9 +/- 16.2 vs. 25.8 +/- 5.9 cm(3) m(-2), P < 0.001). The ACTEV at rest was similar in IDDC and ISDC and greater than in the controls (8.6 +/- 3.5 vs. 9.7 +/- 2.9 vs. 6.1 +/- 2.2 cm(3) m(-2) P < 0.01), whereas during the dobutamine infusion it remained unaltered in IDDC (10.8 +/- 4.6 cm(3) m(-2), P = NS vs. rest) and increased in ISDC (11.8 +/- 3.3 cm(3) m(-2), P < 0.05) and the controls (13.1 +/- 3.2 cm(3) m(-2), P < 0.01). The ACTEF was lower in IDDC than ISDC and the controls at rest (20 +/- 10% vs. 33 +/- 8% vs. 36 +/- 10%, P < 0.01). Dobutamine infusion was associated with no significant increase in ACTEF in IDDC (25 +/- 12%, P = NS vs. rest), and with an increase in this variable in ISDC (39 +/- 10%, P < 0.05) and the controls (49 +/- 12%, P < 0.01). CONCLUSIONS: Dobutamine infusion is associated with an increase in LA ACTEV and fraction in ISDC and no significant change in these indices in IDDC. These findings indicate a reduced LA systolic reserve in IDDC.


Assuntos
Função do Átrio Esquerdo/fisiologia , Cardiomiopatia Dilatada/fisiopatologia , Isquemia Miocárdica/fisiopatologia , Adulto , Idoso , Cateterismo Cardíaco/métodos , Cardiomiopatia Dilatada/diagnóstico por imagem , Ecocardiografia sob Estresse , Feminino , Átrios do Coração , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Sístole
14.
Eur Cytokine Netw ; 16(2): 152-60, 2005 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15941687

RESUMO

Matrix metalloproteinases (MMP) degrade myocardial fibrillar collagen in acute myocardial infarction (MI) patients. Their activity is tightly controlled in normal myocardium by a family of closely related tissue inhibitors known as TIMP. An imbalance in their activity might contribute to post-MI remodeling. Plasma levels of MMP-1, TIMP-1 and MMP-1/TIMP-1 complex were measured, using relevant ELISA kits, in 24 (22 males-2 females), acute MI patients with a mean age 59 +/- 14 years. Blood samples were taken on admission (0 h), and 3 h, 6 h, 9 h, 18 h, 24 h, 36 h, 48 h, 3rd, 4th, 5th, 7th, 15th, 30th days after MI. All patients underwent coronary arteriography with ventriculography for estimation of left ventricular ejection fraction (LVEF) and extent of coronary artery diseases, and echocardiographic study for measuring end-diastolic diameter (EDD). Ten patients with an LVEF < 45%, an EDD > 47.5 mm, and heart failure symptoms were included in group A and compared against 12 patients with an LVEF > 45% an EDD < 47.5 mm in group B. Mean plasma concentrations of MMP-1 were higher by 21% in group A (1.3 +/- 0.2 ng/mL) compared to group B (1 +/- 0.1 ng/mL) over the total study period. TIMP-1 plasma concentrations showed very little difference between the 2 groups, (704 +/- 213 ng/mL versus 691 +/- 165 ng/mL, (6%)). Finally, plasma concentrations of MMP-1/TIMP-1 complex were lower by -36% in group A with a mean value of 2.7 +/- 0.6 ng/mL versus 3.7 +/- 0.5 ng/mL in group B. Mean values for the differences were significant at time points 0, 6, 18, 24 and 48 hours for MMP-1 (p < 0.036), and on 48 h and the 4th day for MMP-1/TIMP-1 complex (p < 0.031). Moreover, a good correlation was found between plasma concentrations of creatine kinase (CK) and MMP-1 at 18 h (r = 0.422, p = 0.041) and on the 4th day (r = 0.67, p = 0.046), and TIMP-1 on the 4th day (r = 0.67, p = 0.047). Additionally, mean values for LVEF were 35.8 +/- 8.8% in group A versus 51.2 +/- 1.8% (p = 0.00014) in group B. Also, the EDD in-group A was 52.1 +/- 6.9 mm versus 42.9 +/- 3.2 mm in group B (p = 0.00013). In acute MI patients, increased MMP-1, with no change in TIMP-1, is associated with left ventricular dysfunction and dilatation, suggesting that increased collagenolytic activity contributes to loss of LV function.


Assuntos
Metaloproteinases da Matriz/sangue , Infarto do Miocárdio/enzimologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/fisiopatologia , Função Ventricular Esquerda
15.
Rheumatology (Oxford) ; 44(2): 251-4, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15546962

RESUMO

OBJECTIVE: To study the stiffness of large arteries in relation to the extent of skin and lung fibrosis, aortic distensibility was examined in patients with diffuse and limited systemic sclerosis (SSc). METHODS: Consecutive patients (55 with diffuse and 51 with limited SSc) without signs and symptoms of heart failure or a previous history of arterial hypertension underwent echocardiography and lung function tests. Aortic stiffness was determined non-invasively by aortic distensibility and aortic strain measurements in all patients and in 50 healthy subjects, matched for age and gender. RESULTS: Aortic distensibility in patients with either diffuse (2.03 +/- 0.26 x 10(-6) cm(2) dyn(-1)) or limited SSc (2.12 +/- 0.33) was similarly decreased compared with controls (2.49 +/- 0.36, P<0.001). Moreover, aortic strain was significantly reduced in both patient groups compared with controls, confirming that aortic stiffness is increased in SSc independently of the extent of skin involvement. Left ventricular performance was similar between patients and controls, while left ventricular mass and tricuspid systolic gradient were significantly increased in both SSc groups, the latter being associated with aortic stiffness in multivariate analysis. No association with serum levels of C-reactive protein or lung function abnormalities indicative of pulmonary fibrosis were found. CONCLUSIONS: Stiffness of the aorta is increased in patients with established SSc regardless of the extent of the inflammatory fibrotic process in the skin and lungs, suggesting that additional pathogenetic mechanisms contribute to the compromise of large arteries.


Assuntos
Aorta/fisiopatologia , Escleroderma Sistêmico/fisiopatologia , Pele/patologia , Proteína C-Reativa/análise , Ecocardiografia , Feminino , Fibrose , Ventrículos do Coração , Humanos , Masculino , Pessoa de Meia-Idade , Tamanho do Órgão , Fibrose Pulmonar/patologia , Fibrose Pulmonar/fisiopatologia , Esclerodermia Difusa/patologia , Esclerodermia Difusa/fisiopatologia , Esclerodermia Limitada/patologia , Esclerodermia Limitada/fisiopatologia , Escleroderma Sistêmico/diagnóstico por imagem , Estresse Mecânico , Disfunção Ventricular Esquerda/fisiopatologia
16.
Drugs Exp Clin Res ; 30(3): 125-32, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15366789

RESUMO

Essential hypertension is often accompanied by abnormalities of the coagulation/fibrinolytic system predisposing to a procoagulant state. The aim of the present study was to examine the comparative efficacy of the angiotensin II type 1 receptor antagonists eprosartan and losartan on plasma levels of hemostatic/fibrinolytic and endothelial function markers in a cohort of previously untreated hypertensive patients. A total of 86 patients whose hypertension was controlled by monotherapy with eprosartan 600 mg (45 patients) or losartan 100 mg (41 patients) were studied. The plasma levels of plasminogen activator inhibitor-1 (PAI-1) antigen, tissue plasminogen activator inhibitor (tPA) antigen, thrombomodulin (TM), tissue factor pathway inhibitor (TFPI) antigen, and fibrinogen were determined before and after 6 months of therapy. Age, sex distribution, body mass index, lipid profile, systolic and diastolic blood pressure levels, and baseline values of the measured markers were similar in both groups. After 6 months of therapy, systolic blood pressure was significantly lower in patients treated with eprosartan, while no differences were observed with respect to diastolic blood pressure. Treatment with both drugs was associated with a significant decrease in PAI-1 antigen, TM, fibrinogen plasma levels and an increase in tPA antigen. The favorable modification of all the above parameters was significantly greater in the eprosartan than in the losartan group, while TFPI plasma levels were decreased to a similar extent with both drugs. In conclusion, the results of our study indicate that 6-month monotherapy with a new angiotensin II type 1 receptor blocker, eprosartan, is associated with a more favorable modification of hemostatic/fibrinolytic status than with losartan.


Assuntos
Acrilatos/uso terapêutico , Fibrinólise/efeitos dos fármacos , Hemostasia/efeitos dos fármacos , Hipertensão/tratamento farmacológico , Imidazóis/uso terapêutico , Losartan/uso terapêutico , Tiofenos/uso terapêutico , Acrilatos/farmacologia , Idoso , Bloqueadores do Receptor Tipo 1 de Angiotensina II , Esquema de Medicação , Feminino , Fibrinogênio/química , Fibrinogênio/efeitos dos fármacos , Fibrinólise/fisiologia , Seguimentos , Hemostasia/fisiologia , Humanos , Hipertensão/fisiopatologia , Imidazóis/farmacologia , Lipoproteínas/sangue , Losartan/farmacologia , Masculino , Pessoa de Meia-Idade , Inibidor 1 de Ativador de Plasminogênio/sangue , Receptor Tipo 1 de Angiotensina/uso terapêutico , Tiofenos/farmacologia , Trombomodulina/sangue , Trombomodulina/efeitos dos fármacos , Fatores de Tempo , Ativador de Plasminogênio Tecidual/antagonistas & inibidores , Ativador de Plasminogênio Tecidual/sangue , Ativador de Plasminogênio Tecidual/efeitos dos fármacos
17.
Drugs Exp Clin Res ; 30(2): 55-65, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15272643

RESUMO

Matrix metalloproteinases and their tissue inhibitors are key enzymes degrading myocardial collagen in acute myocardial infarction (AMI). The aim of the present study was to determine whether angiotensin-converting enzyme inhibitors (ACEI) influence collagenase-1 (MMP-1) and their tissue inhibitor (TIMP-1) activity in AMI patients. Plasma levels of MMP-1, TIMP-1 and MMP-1/TIMP-1 complex were measured in 24 patients (aged 58.4 +/- 13.9 years) with AMI. Thirteen patients received perindopril 4 mg/day (group A) and 11 did not (group B). Plasma samples collected on admission and at 0, 3, 6, 9, 12, 18, 24, 36 and 48 hours and on days 3, 4, 5, 7, 15 and 30 thereafter were analyzed by relevant ELISA kits. Ejection fraction (EF) was assessed by ventriculography and end-diastolic diameter (EDD) echo-study on days 6 and 30. Values of collagenolytic enzymes of group A compared with those in group B were on average lower by 34%, 18.3% and 40%, respectively. The difference in values between groups at 0 h, 3 h and 9 h was significant (p < 0.048). ANOVA repeated measurement analysis showed significance within subjects for MMP-1 alone (p < 0.043) and for MMP-1 and ACEI (p < 0.046), while for TIMP-1 and MMP-1/TIMP-1 complex significance was only p < 0.0009. Regarding EDD changes, patients in group A showed minimal or no changes (51.23 +/- 1.8 mm to 51.6 +/- 2.13 mm), their EF was 38.8% and infarct size was medium to large. In contrast, group B showed a trend to increase EDD (41 +/- 0.78 mm to 42.33 +/- 0.59 mm), their EF was 50.5% and infarct size was small to medium. In conclusion, early initiation of ACEI treatment reduces collagenolytic activity. This effect may be considered an alternative mechanism for beneficial effects on postinfarction remodeling.


Assuntos
Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Metaloproteinase 1 da Matriz/sangue , Infarto do Miocárdio/tratamento farmacológico , Inibidores de Proteases/sangue , Inibidor Tecidual de Metaloproteinase-1/sangue , Adulto , Idoso , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/sangue , Infarto do Miocárdio/patologia
18.
J Invasive Cardiol ; 15(10): 600-1, 2003 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-14519897

RESUMO

We describe a patient with a rare coronary arteriovenous fistula connecting the left main stem to the main pulmonary artery. This rare case was discovered during routine coronary angiography for the evaluation of the patient s coronary heart disease.


Assuntos
Fístula Artério-Arterial/congênito , Doença da Artéria Coronariana/congênito , Infarto do Miocárdio/terapia , Artéria Pulmonar/anormalidades , Angioplastia Coronária com Balão , Fístula Artério-Arterial/complicações , Fístula Artério-Arterial/diagnóstico por imagem , Angiografia Coronária , Doença da Artéria Coronariana/complicações , Feminino , Humanos , Pessoa de Meia-Idade , Infarto do Miocárdio/complicações , Stents
19.
Cancer ; 68(7): 1516-9, 1991 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-1893350

RESUMO

Nine patients from 34 to 74 years of age (median, 67 years of age) with uterine papillary serous carcinoma (UPSC) were treated with whole-abdominal radiation therapy (WART) on an adjuvant basis after cytoreductive surgery. All patients were treated with megavoltage photons to an abdominopelvic field to a median dose of 2500 cGy, with continued treatment to a whole pelvic field to a median dose of 4500 cGy. Three patients received additional boost to the vaginal apex. Follow-up time ranged from 6 to 31 months (median, 25 months) after completion of WART. Six patients had recurrent disease at 5 to 20 months (median, 7.5 months). Four of these patients died of their disease during the follow-up period. Three of six patients in whom treatment failed had disease at the vaginal apex. None of these patients received boost radiation therapy to that site. In contrast, two of three patients remaining disease free were treated with additional vaginal apex irradiation. Based on these results, the authors do not routinely recommend WART for adjuvant treatment of UPSC. They do, however, recommend vaginal apex irradiation for these patients.


Assuntos
Carcinoma Papilar/radioterapia , Neoplasias Uterinas/radioterapia , Adulto , Idoso , Carcinoma Papilar/cirurgia , Terapia Combinada , Tubas Uterinas/cirurgia , Feminino , Seguimentos , Humanos , Histerectomia , Pessoa de Meia-Idade , Ovariectomia , Dosagem Radioterapêutica , Neoplasias Uterinas/cirurgia
20.
Anticancer Res ; 10(3): 689-92, 1990.
Artigo em Inglês | MEDLINE | ID: mdl-2369084

RESUMO

Between the years 1960 and 1983, 26 patients with the diagnosis of ependymoma were treated at our institution. Twenty-one patients received postoperative radiotherapy, of whom six patients had supratentorial tumors and 15 had infratentorial tumors. The median dose to the brain was 53.75 Gy with a range of 30-60 Gy. The median dose to the spine was 37.5 Gy with a range of 10-46 Gy. The median survival time for all 26 patients is two years. The median survival time for patients less than 10 years old is two years as compared to six years for patients older than 15 years at the time of diagnosis (0.05 less than p less than 0.10). Patients had a median survival time of greater than five years if the primary tumor was completely resected as compared to two years in the incompletely resected or biopsy only group (p less than 0.25). The median survival time MST for the low grade tumors is 9 years as compared to one year for the high grade tumors (p less than 0.01). The five-year survival was 38% in patients with infratentorial tumors who received craniospinal irradiation as compared to 33% with whole brain and 0% with partial brain radiation including the spine. All five patients with high grade infratentorial tumors subsequently failed in the cerebrospinal axis despite cranio-spinal irradiation in two and partial brain plus whole spine in another two of the patients. In conclusion, the favorable prognostic factors (in order of increasing importance) for patients with intracranial ependymomas are: age greater than 15 (marginal), complete resection and low histological grade.


Assuntos
Neoplasias Encefálicas/cirurgia , Ependimoma/cirurgia , Adolescente , Adulto , Neoplasias Encefálicas/mortalidade , Neoplasias Encefálicas/radioterapia , Criança , Pré-Escolar , Terapia Combinada , Ependimoma/mortalidade , Ependimoma/radioterapia , Feminino , Seguimentos , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...