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1.
J Assist Reprod Genet ; 40(3): 617-626, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36652117

RESUMO

PURPOSE: While delayed parenthood is increasing worldwide, the effect of paternal age on in vitro fertilization (IVF) outcomes remains unclear. The egg donation model appears to be relevant to studying the independent impact of paternal age on clinical outcome, but the available studies are heterogeneous and contradictory. This systematic review and meta-analysis aimed to assess the relationship between paternal age and live birth rate (LBR) in egg donation cycles. METHODS: A systematic search of the literature was conducted in PubMed, Embase, and the Cochrane Library from inception to June 30, 2021. All studies on egg donation cycles where LBR is reported according to male age were included. Study selection, bias assessment, and data extraction were performed by two independent reviewers according to the Cochrane methods. RESULTS: Eleven studies involving 10,527 egg donation cycles were finally included. The meta-analysis showed a slight but significant and linear decrease in LBR with increasing paternal age (estimate - 0.0055; 95% CI (- 0.0093; - 0.0016), p = 0.006), with low heterogeneity (I2 = 25%). No specific threshold was identified. A similar trend toward decreased clinical pregnancy rate with advancing paternal age was found but did not reach statistical significance (p = 0.07). CONCLUSION: This meta-analysis demonstrates that increasing paternal age is associated with a slight but significant and linear decrease in the live birth rate in egg donation cycles, with no apparent threshold effect. Although this requires further confirmation, this information is important for counseling men who are considering delayed childbearing.


Assuntos
Coeficiente de Natalidade , Idade Paterna , Gravidez , Feminino , Masculino , Humanos , Taxa de Gravidez , Fertilização in vitro/métodos , Oócitos , Nascido Vivo/epidemiologia , Estudos Retrospectivos , Doação de Oócitos/métodos
2.
Front Endocrinol (Lausanne) ; 13: 892753, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35757393

RESUMO

Progesterone plays a key role in implantation. Several studies reported that lower luteal progesterone levels might be related to decreased chances of pregnancy. This systematic review was conducted using appropriate key words, on MEDLINE, EMBASE, and the Cochrane Library, from 1990 up to March 2021 to assess if luteal serum progesterone levels are associated with ongoing pregnancy (OP) and live birth (LB) rates (primary outcomes) and miscarriage rate (secondary outcome), according to the number of corpora lutea (CLs). Overall 2,632 non-duplicate records were identified, of which 32 relevant studies were available for quantitative analysis. In artificial cycles with no CL, OP and LB rates were significantly decreased when the luteal progesterone level falls below a certain threshold (risk ratio [RR] 0.72; 95% confidence interval [CI] 0.62-0.84 and 0.73; 95% CI 0.59-0.90, respectively), while the miscarriage rate was increased (RR 1.48; 95% CI 1.17-1.86). In stimulated cycles with several CLs, the mean luteal progesterone level in the no OP and no LB groups was significantly lower than in the OP and LB groups [difference in means 68.8 (95% CI 45.6-92.0) and 272.4 (95% CI 10.8-533.9), ng/ml, respectively]. Monitoring luteal serum progesterone levels could help in individualizing progesterone administration to enhance OP and LB rates, especially in cycles without corpus luteum. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=139019, identifier 139019.


Assuntos
Aborto Espontâneo , Progesterona , Coeficiente de Natalidade , Corpo Lúteo , Feminino , Humanos , Fase Luteal , Gravidez , Taxa de Gravidez
4.
Eur J Anaesthesiol ; 37(10): 889-897, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32925436

RESUMO

BACKGROUND: An inverse linear relationship has been reported between pre-operative fibrinogen levels and postoperative blood loss in cardiac surgery. However, recently high pre-operative fibrinogen levels have also been reported to be associated with increased blood transfusion and re-operation. OBJECTIVE: We tested the hypothesis that the relationship between pre-operative fibrinogen levels and severe peri-operative bleeding is not linear. DESIGN: A large-scale (n = 3883) single-centre retrospective study. SETTING: A tertiary care teaching hospital. PATIENTS: We analysed data from our institutional database which includes all patients above 18 years who underwent on-pump cardiac surgery through a sternotomy between September 2010 and May 2014. MAIN OUTCOME MEASURES: Peri-operative severe bleeding adapted from the Universal Definition of Peri-operative Bleeding, class 3 or 4. The relationship between pre-operative fibrinogen levels and peri-operative severe bleeding was analysed by binary logistic regression. A cubic B-spline transformation was used to estimate the relationship between pre-operative fibrinogen level associated with excessive peri-operative bleeding. RESULTS: Severe peri-operative bleeding was observed in 957 (24.6%) patients. An L-shaped relationship was observed between pre-operative fibrinogen levels and 24-h postoperative blood loss. The relationship between pre-operative fibrinogen levels and severe peri-operative bleeding (i.e. Universal Definition of Peri-operative Bleeding class 3 or 4) was U-shaped: the risk of severe peri-operative bleeding bottomed at 3.3 g l when the upward sloping curve started at 5.8 g l with a steeper increase above 8.2 g l. CONCLUSION: We reported a U-shaped relationship between severe peri-operative bleeding and pre-operative fibrinogen levels. While a low-level of fibrinogen appears to be associated with a high risk of bleeding, a high level does not necessarily protect the patient against such a risk and could even be a risk factor for peri-operative bleeding.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Fibrinogênio , Humanos , Plasma , Hemorragia Pós-Operatória/diagnóstico , Hemorragia Pós-Operatória/epidemiologia , Hemorragia Pós-Operatória/etiologia , Estudos Retrospectivos
5.
Br J Haematol ; 191(3): 460-465, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32342497

RESUMO

RITP was a double-blind randomized, 78-week follow-up trial in which 109 adults with immune thrombocytopenias (ITP) who failed to achieve adequate response to steroids, were randomized to receive rituximab or placebo. Here, we provide the duration of response, splenectomy and mortality rates based on extended follow-up after completion of the RITP study. Extended follow-up data were retrospectively collected for 72 (83%) patients out of the 84 patients who were not splenectomized during the initial RITP study. For the present analysis, median [interquartile range] duration of follow-up after randomization was 72 [62-82] months. Median duration of response among patients who achieved an initial response was significantly longer in patients who received rituximab (8·2 [5·5-16·7] months) as compared to placebo (1·8 [1·3-3·6] months), P = 0·036. Overall, 35 patients underwent splenectomy (13 in the rituximab, and 22 in the placebo arm, P = 0·12). Eleven patients (10%) died during the study: five in the rituximab and six in the placebo arms, including four deaths from severe bleeding. Although most rituximab-treated patients eventually relapsed, a longer duration of response and a trend towards lower splenectomy rate were observed in rituximab-treated patients.


Assuntos
Fatores Imunológicos/uso terapêutico , Púrpura Trombocitopênica Idiopática/tratamento farmacológico , Rituximab/uso terapêutico , Adulto , Idoso , Terapia Combinada , Feminino , Seguimentos , Humanos , Fatores Imunológicos/administração & dosagem , Fatores Imunológicos/efeitos adversos , Incidência , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Terapia de Alvo Molecular , Púrpura Trombocitopênica Idiopática/diagnóstico , Púrpura Trombocitopênica Idiopática/epidemiologia , Púrpura Trombocitopênica Idiopática/etiologia , Retratamento , Estudos Retrospectivos , Rituximab/administração & dosagem , Rituximab/efeitos adversos , Resultado do Tratamento
6.
Clin Kidney J ; 11(5): 710-719, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30288267

RESUMO

BACKGROUND: The aim of the third French Phosphorus and Calcium Observatory (Photo-Graphe® 3) was to assess the achievement of international Kidney Disease: Improving Global Outcomes (KDIGO) recommendations on optimal serum phosphate, calcium and parathyroid hormone (PTH) levels and possible associations with mortality in patients with chronic kidney disease (CKD). METHODS: This was a prospective, observational study conducted with nephrologists in France who were selected using a clustering approach. Adult patients with non-dialysis Stage 4 or 5 CKD and no kidney graft history were eligible. Data about clinical events, serum biochemistry and treatment were collected every 6 months for 2.5 years and 12 months thereafter. The Kaplan-Meier method was used for survival analysis and Cox proportional hazards model for identification of factors associated with survival. RESULTS: Overall, 566 CKD Stage 4 patients (men, 56%) and 153 CKD Stage 5 patients (men, 62%) were included. In Stage 4, only 14-15% patients achieved the three main 2009 KDIGO targets during the first 2 years and 22% at 2.5 years. In Stage 5 patients, the proportion remained <6% throughout. The percentages of patients achieving the three main 2017 KDIGO targets were slightly higher at each time point. Overall, 14% of Stage 4 and 10% of Stage 5 patients died in the observation period. Only age and haemoglobin level were significantly associated with risk of all-cause mortality. CONCLUSIONS: Few CKD patients achieved KDIGO mineral targets. Increased mortality risk was linked to older age and lower haemoglobin level, but not to serum calcium, phosphate or PTH targets.

7.
Clin Kidney J ; 11(1): 73-79, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29423206

RESUMO

BACKGROUND: Abnormal serum phosphate, calcium and parathyroid hormone (PTH) levels in patients with chronic kidney disease (CKD) undergoing haemodialysis have been associated with poor survival. The French Phosphorus and Calcium Observatory (Photo-Graphe® 3) aimed to estimate the percentage of CKD patients achieving the three Kidney Disease: Improving Global Outcomes (KDIGO) targets about optimal serum phosphate, calcium and PTH over a 3.5-year follow-up period. METHODS: This was a prospective, multicentre, epidemiological observational study conducted with nephrologists in France, selected using a clustering approach. Eligible patients were adults undergoing intermittent haemodialysis or haemodiafiltration therapy started within the preceding 12 months. Data about clinical events, serum biochemistry and treatment were collected once every 6 months for 2.5 years and 12 months thereafter. RESULTS: Overall, 9010 incident patients were included (men, 63%; median age, 71 years) of whom 7515 (83.4%) were treated by haemodialysis and 1495 (16.6%) by haemodiafiltration. None had a history of fracture or revascularization while 89 (1%) patients had a history of parathyroidectomy >6 months. Overall, 874 (10%) patients received a kidney graft, 2183 (24%) died and 1148 (13%) were lost to follow-up. The proportion achieving the three KDIGO targets increased significantly from 11% to 16% (P < 0.0001) until Year 2, but remained stable afterwards. The percentage of incident dialysis patients with normal serum phosphate (P < 0.0001) or normal serum calcium (P < 0.0001) levels increased significantly over time, while no significant change was observed for those with controlled PTH. CONCLUSION: Less than 20% of patients achieved the KDIGO recommendations although their proportion increased slightly over time.

8.
Lancet ; 385(9978): 1653-61, 2015 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-25662413

RESUMO

BACKGROUND: Immune thrombocytopenia is characterised by immune-mediated destruction and suboptimum production of platelets. Despite the absence of supporting evidence, rituximab is frequently used off-label in patients with immune thrombocytopenia. We aimed to assess the efficacy of rituximab as compared with placebo as a splenectomy-sparing treatment in patients who were previously treated with corticosteroids. METHODS: In this multicentre, randomised, double-masked, placebo-controlled trial, we enrolled corticosteroid unresponsive adult patients (aged ≥18 years) with primary immune thrombocytopenia and a platelet count of less than 30 × 10(9) platelets per L. Patients were randomly assigned (1:1) to four weekly infusions of 375 mg/m(2) rituximab or placebo. Concurrent treatment with corticosteroids only was allowed during the study. The primary endpoint was rate of treatment failure within 78 weeks--a composite of splenectomy or meeting criteria for splenectomy after week 12 if splenectomy was not done, assessed in all patients who received at least one dose of study treatment. Secondary endpoints were response rates, relapse rates, and duration of response. Efficacy endpoints were assessed with the Kaplan-Meier method. Safety endpoints were assessed in all patients who received at least one dose. This trial is registered with ClinicalTrials.gov, number NCT00344149. FINDINGS: Between Aug 17, 2006, and June 30, 2011, we enrolled 112 patients. 32 (58%) of 55 patients in the rituximab group and 37 (69%) of 54 patients in the placebo group had treatment failure within 78 weeks (Kaplan-Meier cumulative incidence 46% for rituximab vs 52% for placebo (hazard ratio [HR] 0·89, 95% CI 0·55-1·45; p=0·65). The cumulative incidence of overall response was 81% in the rituximab group versus 73% in the placebo group (p=0·15) and complete response was 58% in the rituximab group versus 50% in the placebo group (p=0·12). Of those achieving an overall response, 68% relapsed in the rituximab group and 78% relapsed in the placebo group, and of those achieving complete response, 50% relapsed in the rituximab group and 62% relapsed in the placebo group. Time to relapse in the rituximab group was longer in patients who achieved overall response (36 vs 7 weeks; p=0·01) but not complete response (76 vs 49 weeks; p=0·19). Rates of bleeding were similar in the two groups (21 [38%] in the rituximab group vs 27 [50%] in the placebo group; p=0·08) as were rates of infection (22 [40%] vs 13 [24%]; p=0·09). INTERPRETATION: Despite no reduction in the rate of long-term treatment failure with rituximab, a small benefit cannot be ruled out, as suggested by an apparently longer duration of response and numerically higher response rates with rituximab. FUNDING: South-East Regional Health Authority and Østfold Hospital, Norway; Roche, France; and Roche, Norway.


Assuntos
Anticorpos Monoclonais Murinos/uso terapêutico , Fatores Imunológicos/uso terapêutico , Púrpura Trombocitopênica Idiopática/tratamento farmacológico , Corticosteroides/uso terapêutico , Adulto , Anticorpos Monoclonais Murinos/administração & dosagem , Humanos , Fatores Imunológicos/administração & dosagem , Pessoa de Meia-Idade , Uso Off-Label , Recidiva , Rituximab , Falha de Tratamento
9.
Eur J Heart Fail ; 16(9): 984-91, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25065368

RESUMO

AIMS: Limited data are available on iron parameters in patients hospitalized for decompensation of chronic heart failure. METHODS AND RESULTS: Iron parameters of patients hospitalized for decompensation of chronic heart failure were prospectively assessed during the 72 h after hospital admission. Iron deficiency was defined according to the 2012 European Society of Cardiology Guidelines. Overall, 411 men (75 ± 12 years; 75% NYHA functional classes III/IV) and 421 women (81 ± 11 years; 71% NYHA classes III/IV) were evaluated. The prevalence of iron deficiency was 69% in men and 75% in women (including 41% and 49% with absolute iron deficiency, respectively). The prevalence of anaemia in men (<13 g/dL) was 68% and in women (<12 g/dL) it was 52%. Among non-anaemic patients, the prevalence of iron deficiency was 57% in men and 79% in women. Only 9% of patients received iron supplementation at the time of admission (oral, 9%; intravenous, 0.2%). Multivariate analysis showed that anaemia and antiplatelet treatment in men, and diabetes and low C-reactive protein in women, were independently associated with iron deficiency. CONCLUSIONS: Iron deficiency is very common in patients admitted for acute decompensated heart failure, even among non-anaemic patients. Given the benefit of iron therapy in chronic heart failure, our results emphasize the need to assess iron status not only in chronic heart failure patients, but even more so in those admitted for worsening heart failure, regardless of gender, heart failure severity, or haemoglobin level. Initiating iron therapy in hospitalized heart failure patients needs to be investigated.


Assuntos
Anemia Ferropriva/epidemiologia , Insuficiência Cardíaca/complicações , Ferro/sangue , Doença Aguda , Idoso , Idoso de 80 Anos ou mais , Anemia Ferropriva/sangue , Anemia Ferropriva/etiologia , Proteína C-Reativa/metabolismo , Feminino , Seguimentos , França/epidemiologia , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/epidemiologia , Humanos , Masculino , Prevalência , Prognóstico , Estudos Prospectivos
10.
J Pharmacol Exp Ther ; 349(1): 107-17, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24504098

RESUMO

Increased inflammation and aberrant angiogenesis underlie psoriasis. Here, we report that the inhibition of insulin receptor substrate-1 (IRS-1) expression with aganirsen resulted in a dose-dependent reduction (P < 0.0001) in IRS-1 protein in the cytoplasm, while IRS-1 protein remained quantitatively unchanged in the perinuclear environment. Aganirsen induced a dose-dependent increase in serine-phosphorylated IRS-1 in the soluble perinuclear-nuclear fraction, inducing IRS-1-14-3-3ß protein association (P < 0.001), thereby impairing 14-3-3ß-tristetraprolin protein complex and AU-rich mRNA's stability (P < 0.001). Accordingly, aganirsen inhibited (P < 0.001) in vitro the expression of interleukin-8 (IL-8), IL-12, IL-22, and tumor necrosis factor alpha (TNFα), four inflammatory mediators containing mRNA with AU-rich regions. To demonstrate the clinical relevance of this pathway, we tested the efficacy of aganirsen by topical application in a pilot, double-blind, randomized, dose-ranging study in 12 psoriatic human patients. After 6 weeks of treatment, least square mean differences with placebo were -38.9% (95% confidence interval, -75.8 to -2.0%) and -37.4% (-74.3 to -0.5%) at the doses of 0.86 and 1.72 mg/g, respectively. Lesion size reduction was associated with reduced expression of IRS-1 (P < 0.01), TNFα (P < 0.0001), and vascular endothelial growth factor (P < 0.01); reduced keratinocyte proliferation (P < 0.01); and the restoration (P < 0.02) of normal levels of infiltrating CD4(+) and CD3(+) lymphocytes in psoriatic skin lesions. These results suggest that aganirsen is a first-in-class of a new generation of antiangiogenic medicines combining anti-inflammatory activities. Aganirsen-induced downregulation of inflammatory mediators characterized by AU-rich mRNA likely underlies its beneficial clinical outcome in psoriasis. These results justify further large-scale clinical studies to establish the dose of aganirsen and its long-term efficacy in psoriasis.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Proteínas Substratos do Receptor de Insulina/antagonistas & inibidores , Oligonucleotídeos/uso terapêutico , Psoríase/tratamento farmacológico , Estabilidade de RNA/efeitos dos fármacos , RNA Mensageiro/fisiologia , Tristetraprolina/metabolismo , Elementos Ricos em Adenilato e Uridilato , Administração Tópica , Inibidores da Angiogênese/administração & dosagem , Inibidores da Angiogênese/efeitos adversos , Citocinas/antagonistas & inibidores , Citocinas/imunologia , Relação Dose-Resposta a Droga , Método Duplo-Cego , Feminino , Humanos , Masculino , Microvasos/efeitos dos fármacos , Microvasos/metabolismo , Pessoa de Meia-Idade , Oligonucleotídeos/administração & dosagem , Oligonucleotídeos/efeitos adversos , Projetos Piloto , Psoríase/imunologia , Psoríase/metabolismo , Psoríase/patologia , RNA Mensageiro/genética , Pele/irrigação sanguínea , Pele/efeitos dos fármacos , Pele/imunologia , Pele/patologia , Resultado do Tratamento
11.
J Neurol Neurosurg Psychiatry ; 83(6): 594-600, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22396440

RESUMO

OBJECTIVE: The upper limb function of hemiplegic patients is currently evaluated using scales that assess physical capacity or daily activities under test conditions. The present scale, the Upper Limb Assessment in Daily Living (ULADL) Scale, was developed to explore the subjective and objective functional capacities of such patients in a proximal to distal sequence. METHODS: A group of experts constructed a scale addressing 17 upper limb functions (five active passive and 12 active) which could be explored by a questionnaire (Q) and a test (T). Reproducibility, internal consistency, concurrent validity (Rivermead Motor Assessment (RMA)) and learning effect were estimated in a multicentre study. RESULTS: 49 stroke patients were each rated three times within 7 days by a total of 21 physicians, yielding a total of 142 ratings. The ULADL took 16±8 min to complete compared with 9±5 min for the RMA. Cronbach's alpha coefficient was 0.95 for Q and 0.97 for the practical tests (T). The global Q and T scores, and in particular the global Q score, were slightly higher at the second rating. The intra-rater intraclass correlation coefficient (ICC) was 0.65 (95% CI (0.44 to 0.79)) for Q and 0.97 (0.95 to 0.98) for T, and the inter-rater ICC was 0.95 for both Q and T. The Bland and Altman method showed good intra- and inter-rater reliability with no systematic trend. Correlation coefficients for ULADL versus RMA were >0.80 for both Q and T. CONCLUSIONS: The ULADL Scale has good psychometric properties and can explore patients with different degrees of upper limb impairment.


Assuntos
Avaliação da Deficiência , Hemiplegia/diagnóstico , Índice de Gravidade de Doença , Extremidade Superior/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Hemiplegia/complicações , Hemiplegia/fisiopatologia , Humanos , Pessoa de Meia-Idade , Variações Dependentes do Observador , Projetos Piloto , Reprodutibilidade dos Testes , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/fisiopatologia
12.
Arch Cardiovasc Dis ; 101(11-12): 723-35, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19059567

RESUMO

AIMS: To compare the impact of three patient counselling strategies for lifestyle changes and to assess the safety and efficacy of ezetimibe on top of statin therapy in hypercholesterolemic high risk patients. METHODS: Open, cluster randomized 3-parallel group trial. Physicians were randomized between patient motivation on: diet or physical exercise or both. Counselling was adapted to the patient's baseline Prochaska stage of change. High cardiovascular risk patients, with LDL-C above or equal to 3 mmol/L despite statin therapy for at least 3 months, were enrolled. Ezetimibe (10mg/day) and patient counselling were started at the same time. Target goal was defined as total cholesterol less than 5 mmol/L and LDL-C above 3 mmol/L. RESULTS: Overall 428 physicians enrolled 1,496 patients. At baseline, LDL-C was 3.9+/-0.9 mmol/L and total cholesterol was 6.1+/-1.1 mmol/L. LDL-C decreased by -30.4+/-19.3% and 869 (62%) patients achieved target goal. No difference was shown between randomisation groups. However, improvements in diet consumption patterns were more easily obtained than improvement in physical activity stage of change in non-active patient at baseline. CONCLUSIONS: The marked short-term impact (-30%) on LDL-C, although similar between the three groups, slightly exceeds usual LDL-C reductions achieved by this dose of ezetimibe. Decreasing fat consumption seems easier than increasing physical activity. This study confirms the good efficacy, short-term tolerability and safety of ezetimibe on top of statins.


Assuntos
Anticolesterolemiantes/uso terapêutico , Azetidinas/uso terapêutico , Doenças Cardiovasculares/prevenção & controle , Aconselhamento Diretivo/métodos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Hipercolesterolemia/terapia , Comportamento de Redução do Risco , Idoso , Anticolesterolemiantes/efeitos adversos , Azetidinas/efeitos adversos , Doenças Cardiovasculares/sangue , Doenças Cardiovasculares/etiologia , LDL-Colesterol/sangue , Terapia Combinada , Dieta com Restrição de Gorduras , Quimioterapia Combinada , Exercício Físico , Ezetimiba , Feminino , Humanos , Hipercolesterolemia/sangue , Hipercolesterolemia/complicações , Hipercolesterolemia/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Motivação , Vigilância de Produtos Comercializados , Fatores de Tempo , Resultado do Tratamento
13.
J Hypertens ; 25(11): 2218-26, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17921815

RESUMO

BACKGROUND: In-Salah is a city-oasis located in the middle of the Algerian Sahara, a desert area whose drinking water has a high sodium content. No cardiovascular epidemiological studies have ever been conducted in this region. METHODS: A randomized sample of 635 men and 711 women, aged 40-99 years, was studied. Blood pressure measurements, combined with a clinical questionnaire that included educational and socio-economic data, and standard blood samples for the detection of dyslipidemia and diabetes mellitus, were collected. RESULTS: The mean age was 55 +/- 12 years. The prevalence of hypertension was 44% and was highly influenced by age, sex, skin colour, educational status, obesity and metabolic parameters. The higher prevalence of hypertension among black individuals was independent of socio-economic and educational levels, and of metabolic parameters. The presence of antihypertensive treatment was three times more frequent in women than in men, and there was no difference according to skin colour. Among treated subjects, 25% were well controlled, and this percentage was similar among both black and white individuals. CONCLUSION: Epidemiological studies in such an emergent population indicate that hypertension is a major public health problem. The high sodium content in drinking water in this region could play a major role in the development of hypertension.


Assuntos
Hipertensão/epidemiologia , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Argélia/epidemiologia , Glicemia/análise , Feminino , Humanos , Hipertensão/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Prevalência , Fatores Sexuais , Sódio na Dieta/administração & dosagem , Triglicerídeos/sangue
14.
Cardiology ; 107(2): 97-102, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-16847375

RESUMO

The extent to which subgroup analyses should affect the interpretation and conclusions in a trial report is a contentious matter, and guidelines regarding this issue have been established by the US Food and Drug Administration (FDA) and the EU Committee for Proprietary Medicinal Products (CPMP). Subgroup analyses should be set out in the protocol of clinical trials. The treatment effect itself may vary within a subgroup or covariate. In some cases, interactions are anticipated or are of particular a priori interest; hence a subgroup analysis or a statistical model including interactions is part of the planned analysis. However, subgroup or interaction analyses are often merely exploratory and should be clearly identified as such in the protocol. When exploratory, these analyses should be interpreted cautiously. Market approval of a compound is based on the overall trial results, and, importantly, no drug has so far been approved or not-approved either in the US or in the EU on the basis of subgroup analysis. However, subgroup analysis can influence the approval or can even be required, and therefore it can influence the labelling of the Summary Characteristics of a Product. Two examples in heart failure are given by the Val-HeFT trial comparing valsartan to placebo and the MERIT-HF trial comparing metoprolol to placebo, from which some remarkable regulatory issues arose that were debated by the FDA and CPMP.


Assuntos
Ensaios Clínicos como Assunto/normas , Interpretação Estatística de Dados , Aprovação de Drogas , Ensaios Clínicos como Assunto/estatística & dados numéricos , Indústria Farmacêutica/normas , União Europeia , Estados Unidos , United States Food and Drug Administration
15.
Presse Med ; 32(37 Pt 2): S38-43, 2003 Nov 22.
Artigo em Francês | MEDLINE | ID: mdl-14763353

RESUMO

PLATELET INHIBITION: Conventional NSAIDs and aspirin have platelet-inhibiting properties via platelet cyclo-oxygenase-1 (Cox-1) isoenzyme inhibition. Among the NSAIDs which induce reversible inhibition of Cox-1, naproxen seems to have a potent platelet-inhibiting action associated with a decrease in cardiovascular clinical events in secondary prevention. Flurbiprofen is indicated in the secondary prevention after myocardial infarction. Conversely, no conventional NSAID is indicated and none have demonstrated efficacy in primary prevention. GI BLEEDING: The platelet-inhibiting action of conventional NSAIDs and aspirin is a key factor in explaining the increased risk of bleeding reported with these medicinal products. Digestive system bleeding is the main risk. Few data are available regarding bleeding other than gastro-intestinal. COX-2 SPECIFIC INHIBITION PROPERTIES: Conversely, Cox-2 specific inhibitors have no platelet-inhibiting properties: the pharmacological profile of Cox-2 SI is therefore different from that of conventional NSAIDs. These medicinal products are anti-inflammatory, analgesic, platelet-inhibiting agents which are not harmful to the GI mucosa and which probably induce less bronchospasms. In patients with cardiovascular risks, Cox-2 SI can and should be used in combination with platelet-inhibiting agents, in particular aspirin, because they do not alter the aspirin effect on platelets, contrary to what is observed with conventional NSAIDs. PRESCRIPTION WITH ANTI-COAGULANTS: The concomitant prescription of conventional NSAIDs with anti-coagulants is not recommended because, in addition to the possible potentiation of oral anti-coagulants, NSAIDs increase the risk of serious bleeding adverse events due to their irritative effect on the GI mucosa and their platelet-inhibiting effect. This risk might be lower with Cox-2 specific inhibitors.


Assuntos
Anti-Inflamatórios não Esteroides/efeitos adversos , Anti-Inflamatórios não Esteroides/uso terapêutico , Anticoagulantes/efeitos adversos , Anticoagulantes/uso terapêutico , Hemorragia Gastrointestinal/etiologia , Inibidores da Agregação Plaquetária/efeitos adversos , Inibidores da Agregação Plaquetária/uso terapêutico , Administração Oral , Inibidores de Ciclo-Oxigenase/efeitos adversos , Inibidores de Ciclo-Oxigenase/uso terapêutico , Interações Medicamentosas , Humanos , Mucosa Intestinal/patologia , Fatores de Risco
16.
Blood Press Monit ; 7(4): 237-41, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12198340

RESUMO

BACKGROUND: The aim of this study was to validate the Omron HEM-907 blood pressure (BP) measuring device according to the international validation protocol. DESIGN: The international validation protocol is divided into two phases: the first phase is performed on 15 selected subjects and if the device passes this phase, 18 more subjects are selected making a total number of 33 subjects on which the final validation is performed. METHODS: For each subject, BP measurements were performed simultaneously by two trained observers using mercury sphygmomanometers alternately with the Omron HEM-907 device. In all, 99 measurements were obtained for comparison. The difference between the BP value given by the device and that obtained by the two observers (mean of the two observers) was calculated for each measure. RESULTS: The difference between the two observers was -1 +/- 2 mmHg for the systolic BP (SBP) and for the diastolic BP (DBP). The Omron HEM-907 passed the first phase of the validation process. For the second phase, the average differences between the device and mercury sphygmomanometer readings were -1 +/- 7 and -5 +/- 6 mmHg for SBP and DBP respectively. Readings for the HEM-907 device differed by less than 5 mmHg for 61 of the systolic readings and 52 of the diastolic readings; by less than 10 mmHg for 85 of the systolic readings and 85 of the diastolic readings; and by less than 15 mmHg for 94 of the systolic readings and 96 of the diastolic readings. CONCLUSIONS: The Omron HEM-907 device passes the two phases of the international validation protocol.


Assuntos
Esfigmomanômetros , Adulto , Idoso , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Esfigmomanômetros/normas
17.
J Am Soc Nephrol ; 12(12): 2759-2767, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11729246

RESUMO

Left ventricular (LV) hypertrophy (LVH) is a risk factor for mortality in patients with end-stage renal disease (ESRD). Whether the attenuation of LVH has a positive effect on survival of patients with ESRD has not been documented. The aim of this study was to determine the effect of parallel treatment of hypertension and anemia on LV mass (LVM) and to determine the effect of LVM changes on survival. A cohort of 153 patients receiving hemodialysis was studied. The duration of follow-up was 54 +/- 37 mo. All patients had echocardiographic determination of LV dimensions and LVM at baseline and regular intervals until the end of the follow-up period. During the study, BP decreased from (mean +/- SD) 169.4 +/- 29.7/90.2 +/- 15.6 to 146.7 +/- 29/78 +/- 14.1 mmHg (P < 0.001), and hemoglobin increased from 8.65 +/- 1.65 to 10.5 +/- 1.45 g/dl (P < 0.001). The LV end-diastolic diameter and mean wall thickness decreased from 56.6 +/- 6.5 to 54.8 +/- 6.5 mm (P < 0.001), and from 10.4 +/- 1.6 to 10.2 +/- 1.6 mm (P < 0.05), respectively. The LVM decreased from 290 +/- 80 to 264 +/- 86 g (P < 0.01). Fifty-eight deaths occurred, 38 attributed to cardiovascular (CV) disease and 20 attributed to non-CV causes. According to Cox analyses after adjustment for age, gender, diabetes, history of CV disease, and all nonspecific CV risk factors, LVM regression positively affected the survival. The hazard risk ratio associated with a 10% LVM decrease was 0.78 (95% confidence interval, 0.63 to 0.92) for all-causes mortality and 0.72 (95% confidence interval, 0.51 to 0.90) for mortality due to CV disease. These results show that a partial LVH regression in patients with ESRD had a favorable and independent effect on patients' all-cause and CV survival.


Assuntos
Ecocardiografia , Hipertrofia Ventricular Esquerda/diagnóstico por imagem , Diálise Renal , Adulto , Idoso , Anemia/tratamento farmacológico , Estudos de Coortes , Feminino , Seguimentos , Humanos , Hipertensão/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Prognóstico , Modelos de Riscos Proporcionais , Análise de Sobrevida
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