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1.
J Am Heart Assoc ; 11(17): e024974, 2022 09 06.
Artigo em Inglês | MEDLINE | ID: mdl-36000432

RESUMO

Background Religiosity/spirituality is a major coping mechanism for African Americans, but no prior studies have analyzed its association with the American Heart Association Life's Simple 7 (LS7) indicators in this group. Methods and Results This cross-sectional study using Jackson Heart Study (JHS) data examined relationships between religiosity (religious attendance, private prayer, religious coping) and spirituality (theistic, nontheistic, total) with LS7 individual components (eg, physical activity, diet, smoking, blood pressure) and composite score among African Americans. Multivariable logistic regression assessed the odds of achieving intermediate/ideal (versus poor) LS7 levels adjusted for sociodemographic, behavioral, and biomedical factors. Among the 2967 participants (mean [SD] age=54.0 [12.3] years; 65.7% women), higher religious attendance was associated with increased likelihood (reported as odds ratio [95% CI]) of achieving intermediate/ideal levels of physical activity (1.16 [1.06-1.26]), diet (1.10 [1.01-1.20]), smoking (1.50 [1.34-1.68]), blood pressure (1.12 [1.01-1.24]), and LS7 composite score (1.15 [1.06-1.26]). Private prayer was associated with increased odds of achieving intermediate/ideal levels for diet (1.12 [1.03-1.22]) and smoking (1.24 [1.12-1.39]). Religious coping was associated with increased odds of achieving intermediate/ideal levels of physical activity (1.18 [1.08-1.28]), diet (1.10 [1.01-1.20]), smoking (1.32 [1.18-1.48]), and LS7 composite score (1.14 [1.04-1.24]). Total spirituality was associated with increased odds of achieving intermediate/ideal levels of physical activity (1.11 [1.02-1.21]) and smoking (1.36 [1.21-1.53]). Conclusions Higher levels of religiosity/spirituality were associated with intermediate/ideal cardiovascular health across multiple LS7 indicators. Reinforcement of religiosity/spirituality in lifestyle interventions may decrease overall cardiovascular disease risk among African Americans.


Assuntos
American Heart Association , Doenças Cardiovasculares , Negro ou Afro-Americano , Pressão Sanguínea , Doenças Cardiovasculares/epidemiologia , Estudos Transversais , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Espiritualidade , Estados Unidos/epidemiologia
2.
Physiol Rep ; 9(16): e14974, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34405565

RESUMO

Preclinical diastolic dysfunction (PDD) results in impaired cardiorenal response to volume load (VL) which may contribute to the progression to clinical heart failure with preserved ejection fraction (HFpEF). The objective was to evaluate if phosphodiesterase V inhibition (PDEVI) alone or combination PDEVI plus B-type natriuretic peptide (BNP) administration will correct the impaired cardiorenal response to VL in PDD. A randomized double-blinded placebo-controlled cross-over study was conducted in 20 subjects with PDD, defined as left ventricular ejection fraction (LVEF) >50% with moderate or severe diastolic dysfunction by Doppler echocardiography and without HF diagnosis or symptoms. Effects of PDEVI with oral tadalafil alone and tadalafil plus subcutaneous (SC) BNP, administered prior to acute volume loading, were assessed. Tadalafil alone did not result in improvement in cardiac response to VL, as measured by LVEF, LV end diastolic volume, left atrial volume (LAV), or right ventricular systolic pressure (RVSP). Tadalafil plus SC BNP resulted in improved cardiac response to VL, with increased LVEF (4.1 vs. 1.8%, p = 0.08) and heart rate (4.3 vs. 1.6 bpm, p = 0.08), and reductions in both LAV (-4.3 ± 10.4 vs. 2.8 ± 6.6 ml, p = 0.03) and RVSP (-4.0 ± 3.0 vs. 2.1 ± 6.0 mmHg, p < 0.01) versus tadalafil alone. Plasma and urinary cyclic guanosine monophosphate (cGMP) excretion levels were higher (11.3 ± 12.3 vs. 1.7 ± 3.8 pmol/ml, 1851.0 ± 1386.4 vs. 173.4 ± 517.9 pmol/min, p < 0.01) with tadalafil plus SC BNP versus tadalafil alone. There was no improvement in renal response as measured by GFR, renal plasma flow, sodium excretion, and urine flow with tadalafil plus SC BNP compared to tadalafil alone. In subjects with PDD, tadalafil alone resulted in no improvement in cardiac adaptation, while tadalafil and SC BNP resulted in enhanced cardiac adaptation to VL. TRIAL REGISTRATION: ClinicalTrials.gov NCT01544998.


Assuntos
Insuficiência Cardíaca Diastólica/tratamento farmacológico , Peptídeo Natriurético Encefálico/uso terapêutico , Inibidores da Fosfodiesterase 5/uso terapêutico , Tadalafila/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , GMP Cíclico/sangue , GMP Cíclico/urina , Combinação de Medicamentos , Feminino , Taxa de Filtração Glomerular , Insuficiência Cardíaca Diastólica/fisiopatologia , Humanos , Masculino , Contração Miocárdica , Peptídeo Natriurético Encefálico/administração & dosagem , Peptídeo Natriurético Encefálico/efeitos adversos , Peptídeo Natriurético Encefálico/farmacocinética , Inibidores da Fosfodiesterase 5/administração & dosagem , Inibidores da Fosfodiesterase 5/efeitos adversos , Inibidores da Fosfodiesterase 5/farmacocinética , Eliminação Renal , Tadalafila/administração & dosagem , Tadalafila/efeitos adversos , Tadalafila/farmacocinética
3.
J Am Heart Assoc ; 7(11)2018 06 05.
Artigo em Inglês | MEDLINE | ID: mdl-29871857

RESUMO

BACKGROUND: Ideal cardiovascular health metrics (defined by the American Heart Association Life's Simple 7 [LS7]) are suboptimal among blacks, which results in high risk of cardiovascular disease. We examined the association of multiple stressors with LS7 components among blacks. METHODS AND RESULTS: Using a community-based cohort of blacks (N=4383), we examined associations of chronic stress, minor stressors, major life events, and a cumulative stress score with LS7 components (smoking, diet, physical activity, body mass index, blood pressure, total cholesterol, and fasting plasma glucose) and an LS7 composite score. Multivariable logistic regression assessed the odds of achieving intermediate/ideal levels of cardiovascular health adjusted for demographic, socioeconomic, behavioral, and biomedical factors. The LS7 components with the lowest percentages of intermediate/ideal cardiovascular health levels were diet (39%), body mass index (47%), and physical activity (51%). Higher chronic, minor, and cumulative stress scores were associated with decreased odds (odds ratio [OR]) of achieving intermediate/ideal levels for smoking (OR [95% confidence interval], 0.80 [0.73-0.88], 0.84 [0.75-0.94], and 0.81 [0.74-0.90], respectively). Participants with more major life events had decreased odds of achieving intermediate/ideal levels for smoking (OR, 0.84; 95% confidence interval, 0.76-0.92) and fasting plasma glucose (OR, 0.90; 95% confidence interval, 0.82-0.98). Those with higher scores for minor stressors and major life events were less likely to achieve intermediate or ideal LS7 composite scores (OR [95% confidence interval], 0.89 [0.81-0.97] and 0.91 [0.84-0.98], respectively). CONCLUSIONS: Blacks with higher levels of multiple stress measures are less likely to achieve intermediate or ideal levels of overall cardiovascular health (LS7 composite score), specific behaviors (smoking), and biological factors (fasting plasma glucose).


Assuntos
População Negra , Doenças Cardiovasculares/etnologia , Indicadores Básicos de Saúde , Nível de Saúde , Estilo de Vida Saudável , Estresse Psicológico/etnologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , População Negra/psicologia , Glicemia/análise , Pressão Sanguínea , Índice de Massa Corporal , Doenças Cardiovasculares/diagnóstico , Feminino , Conhecimentos, Atitudes e Prática em Saúde/etnologia , Humanos , Acontecimentos que Mudam a Vida , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Mississippi/epidemiologia , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Comportamento de Redução do Risco , Fumar/efeitos adversos , Fumar/etnologia , Estresse Psicológico/diagnóstico , Estresse Psicológico/psicologia , Adulto Jovem
4.
Open Heart ; 5(1): e000766, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29531769

RESUMO

Background and aim: Thoracic radiation therapy (XRT) for cancer is associated with the development of significant coronary artery disease that may require coronary artery bypass grafting surgery (CABG). Contemporary acute surgical outcomes and long-term postoperative survival of patients with prior XRT have not been well characterised. Methods: This was a retrospective, single-centre study of patients with a history of thoracic XRT who required CABG and who were propensity matched against 141 controls who underwent CABG over the same time period. The objectives were to assess early CABG outcomes and long-term survival in patients with prior XRT. Results: Thirty-eight patients with a history of previous thoracic XRT underwent CABG from 1994 to 2013. The median time from XRT exposure to surgery was 7.9 years (IQR: 2.5-18.4 years). Perioperative adverse events were similar in the XRT group and controls; however, there was a trends lower utilisation of internal mammary artery (IMA) grafts in the XRT group (89%vs98%, P=0.13). After a median postoperative follow-up of 5.4 years (IQR 0.9-9.4 years), no difference in long-term all-cause mortality was observed. Conclusion: Patients with prior thoracic XRT who undergo CABG have similar long-term all-cause mortality compared with controls. Isolated CABG after thoracic XRT is not associated with higher perioperative complications, but IMA graft use may be limited by prior XRT.

5.
Am Heart J ; 187: 98-103, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28454813

RESUMO

OBJECTIVES: To assess coronary revascularization outcomes in patients with previous thoracic radiation therapy (XRT). BACKGROUND: Previous chest radiation has been reported to adversely affect long term survival in patients with coronary disease treated with percutaneous coronary interventions (PCI). METHODS: Retrospective, single center cohort study of patients previously treated with thoracic radiation and PCI. Patients were propensity matched against control patients without radiation undergoing revascularization during the same time period. RESULTS: We identified 116 patients with radiation followed by PCI (XRT-PCI group) and 408 controls. Acute procedural complications were similar between groups. There were no differences in all-cause and cardiac mortality between groups (all-cause mortality HR 1.31, P=.078; cardiac mortality 0.78, P=.49). CONCLUSION: Patients with prior thoracic radiation and coronary disease treated with PCI have similar procedural complications and long term mortality when compared to control subjects.


Assuntos
Doença da Artéria Coronariana/cirurgia , Intervenção Coronária Percutânea , Neoplasias Torácicas/radioterapia , Idoso , Causas de Morte , Doença da Artéria Coronariana/mortalidade , Feminino , Humanos , Masculino , Pontuação de Propensão , Radioterapia/efeitos adversos , Estudos Retrospectivos , Resultado do Tratamento
6.
J Card Fail ; 22(4): 249-55, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26277907

RESUMO

BACKGROUND: B-Type natriuretic peptides (BNP) and cardiac troponin T (cTnT) predict cardiovascular events in heart failure (HF) patients, but additional refinement in risk stratification may be possible by targeting pathways leading to fibrosis. We aimed to assess the value of serial measurements of soluble suppression of tumorigenicity 2 (sST2) and galectin-3 to identify risk for adverse pathophysiologic processes. METHODS: New York Heart Association (NYHA) functional class III-IV HF patients (n = 180; LVEF ≤40%) were prospectively evaluated with biomarkers collected every 3 months over 2 years and analyzed regarding a primary end point of death/cardiac transplantation and a secondary end point of HF-related hospitalization or death/transplantation. RESULTS: Time-dependent univariate analyses demonstrated that elevations of sST2 (≥49.3 ng/mL male, ≥33.5 ng/mL female) and galectin-3 (≥22.1 ng/mL) were predictive of the primary and secondary end points. In multivariate models adjusted for BNP, cTnT, and clinical variables, sST2 but not galectin-3 remained an independent predictor (hazard ratio 3.22, 95% confidence interval 1.76-5.89; P < .001). With serial measurements, only sST2 demonstrated incremental value in reclassifying patients to higher risk. CONCLUSIONS: Serial monitoring of sST2 (indicating myocardial fibrosis and remodeling) and cTnT (reflecting myocardial injury) identifies highest-risk HF outpatients and may be valuable to guide patient tailored therapy during follow-up evaluations. Serial galectin-3 monitoring in ambulatory HF patients may not be of benefit.


Assuntos
Galectina 3/sangue , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/diagnóstico , Proteína 1 Semelhante a Receptor de Interleucina-1/sangue , Monitorização Ambulatorial , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/sangue , Proteínas Sanguíneas , Doença Crônica , Feminino , Seguimentos , Galectinas , Humanos , Masculino , Pessoa de Meia-Idade , Monitorização Ambulatorial/métodos , Prognóstico , Estudos Prospectivos
7.
Europace ; 18(2): 246-52, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25767086

RESUMO

BACKGROUND: Cardiac implantable electronic devices (CIEDs) are commonly associated with transvenous lead-related thrombi that can cause pulmonary embolism (PE). METHODS AND RESULTS: We retrospectively evaluated all patients with transvenous CIED leads implanted at Mayo Clinic Rochester between 1 January 2000, and 25 October 2010. Pulmonary embolism outcomes during follow-up were screened using diagnosis codes and confirmed with imaging study reports. Of 5646 CIED patients (age 67.3 ± 16.3 years, 64% men, mean follow-up 4.69 years) 88 developed PE (1.6%), incidence 3.32 [95% confidence interval (CI) 2.68-4.07] per 1000 person-years [men: 3.04 (95% CI 2.29-3.96) per 1000 person-years; women: 3.81 (95% CI 2.72-5.20) per 1000 person-years]. Other than transvenous CIED lead(s), 84% had another established risk factor for PE such as deep vein thrombosis (28%), recent surgery (27%), malignancy (25%), or prior history of venous thromboembolism (15%). At the time of PE, 22% had been hospitalized for ≥ 48 h, and 59% had been hospitalized in the preceding 30 days. Pulmonary embolism occurred in 22% despite being on systemic anticoagulation therapy. Out of 88 patients with PE, 45 subsequently died, mortality rate 93 (95% CI 67-123) per 1000 person-years (hazard ratio 2.0, 95% CI 1.5-2.7, P < 0.0001). CONCLUSIONS: Though lead-related thrombus is commonly seen in patients with transvenous CIED leads, clinical PE occurs with a low incidence. It is possible that embolism of lead thrombus is uncommon or emboli are too small to cause consequential pulmonary infarction.


Assuntos
Arritmias Cardíacas/terapia , Desfibriladores Implantáveis/efeitos adversos , Marca-Passo Artificial/efeitos adversos , Embolia Pulmonar/epidemiologia , Trombose/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Arritmias Cardíacas/diagnóstico , Arritmias Cardíacas/mortalidade , Criança , Pré-Escolar , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Minnesota/epidemiologia , Modelos de Riscos Proporcionais , Embolia Pulmonar/diagnóstico por imagem , Embolia Pulmonar/mortalidade , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Trombose/diagnóstico por imagem , Trombose/mortalidade , Fatores de Tempo , Adulto Jovem
8.
JACC Cardiovasc Interv ; 7(12): 1412-20, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25459527

RESUMO

OBJECTIVES: The aim of this study was to assess outcomes after percutaneous coronary intervention (PCI) with stents in patients treated with thoracic external beam radiation therapy (EBRT). BACKGROUND: Thoracic EBRT for cancer is associated with long-term cardiotoxic sequelae. The impact of EBRT on patients requiring coronary stents is unclear. METHODS: We analyzed outcomes after PCI in cancer survivors treated with curative thoracic EBRT before and after stenting between 1998 and 2012. Reference groups were propensity-matched cohorts with stenting but no EBRT. Primary endpoint was target lesion revascularization (TLR), a clinical surrogate for restenosis. Secondary endpoints included myocardial infarction (MI) and cardiac and overall mortality. RESULTS: We identified 115 patients treated with EBRT a median 3.6 years after stenting (group A) and 45 patients treated with EBRT a median 2.2 years before stenting (group B). Long-term mean TLR rates in group A (3.2 vs. 6.6%; hazard ratio: 0.6; 95% confidence interval: 0.2 to 1.6; p = 0.31) and group B (9.2 vs. 9.7%; hazard ratio: 1.2; 95% confidence interval: 0.4 to 3.4; p = 0.79) were similar to rates in corresponding control patients (group A: 1,390 control patients; group B: 439 control patients). Three years post-PCI, group A had higher overall mortality (48.6% vs. 13.9%; p < 0.001) but not MI (4.8% vs. 4.3%; p = 0.93) or cardiac mortality (2.3% vs. 3.6%; p = 0.66) rates versus control patients. There were no significant differences in MI, cardiac, or overall mortality rates in group B. CONCLUSIONS: Thoracic EBRT is not associated with increased stent failure rates when used before or after PCI. A history of PCI should not preclude the use of curative thoracic EBRT in cancer patients or vice versa. Optimal treatment of cancer should be the goal.


Assuntos
Doença da Artéria Coronariana/terapia , Neoplasias/radioterapia , Intervenção Coronária Percutânea/instrumentação , Stents , Idoso , Doença da Artéria Coronariana/diagnóstico , Doença da Artéria Coronariana/mortalidade , Reestenose Coronária/etiologia , Reestenose Coronária/mortalidade , Reestenose Coronária/terapia , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Minnesota , Infarto do Miocárdio/etiologia , Infarto do Miocárdio/mortalidade , Neoplasias/mortalidade , Neoplasias/patologia , Intervenção Coronária Percutânea/efeitos adversos , Intervenção Coronária Percutânea/mortalidade , Pontuação de Propensão , Modelos de Riscos Proporcionais , Falha de Prótese , Radioterapia/efeitos adversos , Dosagem Radioterapêutica , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
9.
Arch Intern Med ; 172(2): 112-7, 2012 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-22123752

RESUMO

BACKGROUND: Thirty-day readmission rates have become a publicly reported quality performance measure for congestive heart failure, acute myocardial infarction, and percutaneous coronary intervention (PCI). However, little is known regarding the factors associated with 30-day readmission after PCI. METHODS: To assess the demographic, clinical, and procedural factors associated with 30-day readmission rates after PCI, we identified 15, 498 PCI hospitalizations (elective or for acute coronary syndromes) from January 1998 through June 2008 at Saint Marys Hospital, Rochester, Minnesota. All were included in this analysis. Multivariate logistic regression models were used to estimate the adjusted association between demographic, clinical, and procedural variables and 30-day readmission. The association between 30-day readmission and 1-year mortality was estimated using Cox proportional hazards models with readmission as a time-dependent covariate and by using landmark analysis. The main outcome measures were all-cause 30-day readmission to any hospital following PCI and 1-year mortality. RESULTS: Overall, 9.4% of PCIs (n = 1459) were readmitted, and 0.68% of PCIs (n = 106) resulted in death within 30 days after discharge. After multivariate analysis, female sex, Medicare insurance, having less than a high school education, unstable angina, cerebrovascular accident or transient ischemic attack, moderate to severe renal disease, chronic obstructive pulmonary disease, peptic ulcer disease, metastatic cancer, and a length of stay of more than 3 days were associated with an increased risk of 30-day readmission after PCI. Thirty-day readmission after PCI was associated with a higher risk of 1-year mortality (adjusted hazard ratio, 1.38; 95% CI, 1.08-1.75; P = .009). CONCLUSIONS: Nearly 1 in 10 patients undergoing PCI were readmitted within 30 days. Thirty-day readmission after PCI was associated with a higher risk of 1-year mortality.


Assuntos
Angioplastia Coronária com Balão/estatística & dados numéricos , Readmissão do Paciente/estatística & dados numéricos , Síndrome Coronariana Aguda/mortalidade , Síndrome Coronariana Aguda/terapia , Idoso , Angina Instável/epidemiologia , Angioplastia Coronária com Balão/mortalidade , Ponte de Artéria Coronária , Escolaridade , Feminino , Seguimentos , Insuficiência Cardíaca/epidemiologia , Humanos , Ataque Isquêmico Transitório/epidemiologia , Nefropatias/epidemiologia , Tempo de Internação/estatística & dados numéricos , Masculino , Medicare , Análise Multivariada , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/terapia , Metástase Neoplásica , Úlcera Péptica/epidemiologia , Modelos de Riscos Proporcionais , Doença Pulmonar Obstrutiva Crônica/epidemiologia , Sistema de Registros , Fatores Sexuais , Acidente Vascular Cerebral/epidemiologia , Estados Unidos/epidemiologia
10.
Clin Cancer Res ; 13(8): 2323-8, 2007 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-17438090

RESUMO

PURPOSE: Colorectal carcinoma (CRC) can be divided into two nonoverlapping groups: those that are chromosomally unstable but microsatellite stable (MSS CIN+) and those that are chromosomally stable but microsatellite unstable (MSI CIN-). However, a third group with neither chromosome nor microsatellite instability (MSS CIN-) makes a substantial contribution to the total CRC burden. The clinicopathologic features of MSS CIN- CRC are not well delineated. We assessed the relationship between age and chromosomal instability (CIN) status as measured by ploidy and allelic imbalance in a series of MSS tumors. EXPERIMENTAL DESIGN: We studied a prospectively collected series of CRC patients at Mayo Clinic Rochester. A total of 84 samples of MSS CRC in patients or=65 years old served as a comparison group. CIN status was assessed using two techniques: ploidy analysis by flow cytometry and small chromosome changes as measured by genomewide fractional allelic imbalance. RESULTS: CRC in the young-onset group was more likely to involve the rectum and to be high stage. MSS tumors in the young-onset group were more often diploid (46%) than those in older patients (26%; P = 0.006). This difference was maintained in the subset of MSS CRC that were high stage (42% versus 18%; P = 0.02) and in rectal cancers (50% versus 23%; P = 0.04). CONCLUSION: A greater proportion of young patients with MSS CRC has diploid tumors than patients who develop MSS CRC over age 65.


Assuntos
Neoplasias Colorretais/genética , Diploide , Instabilidade Genômica , Adulto , Idade de Início , Idoso , Desequilíbrio Alélico , Neoplasias Colorretais/patologia , DNA/genética , DNA de Neoplasias/genética , Feminino , Citometria de Fluxo , Frequência do Gene , Marcadores Genéticos , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Ploidias , Estudos Prospectivos
11.
Cancer Res ; 67(7): 2944-50, 2007 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-17409399

RESUMO

Two variants (rs1447295/DG8S737) of chromosome 8q24 were recently reported to be associated with increased risk of prostate cancer (PC). To confirm this finding, we genotyped and compared the frequencies of these polymorphisms among 1,121 Caucasian men with PC (435 men with familial PC, 491 men with sporadic PC, and 195 men with aggressive PC) to 545 population-based controls. For the single nucleotide polymorphism marker rs1447295, frequencies of the minor allele (A) were 10.3% in controls, 11.9% in sporadic cases, 16.7% in familial cases, and 17.2% in aggressive cases. Compared with controls, the A allele was significantly more common in both familial PC [odds ratios (OR), 1.93; 95% confidence intervals (95% CI), 1.37-2.72; P = 0.0004] and aggressive PC (OR, 1.87; 95% CI, 1.28-2.74; P = 0.0005) but not for sporadic PC (OR, 1.16; 95% CI, 0.85-1.58; P = 0.25). Although the A allele was more frequent in aggressive PC cases when compared with controls, the allele frequencies were similar among cases with high- and low-grade PC (Gleason grades <7 and >/=7, respectively). For the microsatellite marker DG8S737, the -8 allele was significantly more frequent in familial PC (OR, 1.68; 95% CI, 1.09-2.60; P = 0.031), whereas the -10 allele was more frequent in aggressive PC (OR, 2.85; 95% CI, 1.52-5.36; P = 0.0004). Haplotype analysis showed significant differences in haplotype frequencies between the familial PC (P = 0.006) and aggressive PC (P = 0.005) cases versus controls. The -8/A haplotype showed the strongest association with familial PC (P = 0.008), whereas the -10/A haplotype was most strongly associated with aggressive PC (P = 0.00005). These results further confirm the importance of these two polymorphic variants (rs1447295 and DG8S737) as risk factors for PC. However, the mechanism explaining this increased risk has not yet been established.


Assuntos
Cromossomos Humanos Par 8/genética , Neoplasias da Próstata/genética , Idoso , Idoso de 80 Anos ou mais , Alelos , Predisposição Genética para Doença , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Neoplasias da Próstata/patologia
12.
BMC Genet ; 6 Suppl 1: S112, 2005 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-16451569

RESUMO

We compared the results of quantitative linkage analysis using single-nucleotide polymorphisms and microsatellite markers and introduced a new screening test for multivariate quantitative linkage analysis using the Collaborative Study on the Genetics of Alcoholism data. We analyzed 115 extended non-Hispanic White families and tested for linkage using two phenotypes: the maximum number of drinks in a 24-hour period and the number of packs smoked per day for one year. Our results showed that the linkage signal increased using single-nucleotide polymorphisms compared with microsatellite markers and that the screening test gave similar results to that of the bivariate analysis, suggesting its potential use in reducing overall analysis time.


Assuntos
Consumo de Bebidas Alcoólicas/genética , Fumar/genética , Cromossomos Humanos Par 1/genética , Ligação Genética , Humanos , Repetições de Microssatélites/genética , Polimorfismo de Nucleotídeo Único/genética
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