Ignite Creation Date:
2024-05-05 @ 11:22 AM
Last Modification Date:
2024-10-26 @ 9:04 AM
Study NCT ID:
NCT00005152
Status:
ACTIVE_NOT_RECRUITING
Last Update Posted:
2023-09-18
First Post:
2000-05-25
Brief Title:
Nurses Health Study Cardiovascular Component
Sponsor:
Brigham and Womens Hospital
Organization:
Brigham and Womens Hospital
Study Overview
Official Title:
Nurses Health Study Cardiovascular Component
Status:
ACTIVE_NOT_RECRUITING
Status Verified Date:
2024-08
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
To determine the relationships of hormonal reproductive dietary and lifestyle factors as well as biochemical and genetic factors with the subsequent risk of coronary heart disease and other cardiovascular events in a cohort of female registered nurses The current funding cycle involves comprehensive metabolomic profiling of coronary heart disease cases and controls and development of metabolomic risk scores for coronary heart disease
Detailed Description:
BACKGROUND
The Nurses Health Study began in 1976 when 121700 female registered nurses living in eleven states completed a mailed questionnaire that included items about their medical history diet and other risk factors for cancer The National Cancer Institute funded the first three years of the study and subsequent years on data pertaining to cancer In 1980 the National Heart Lung and Blood Institute began funding the cardiovascular portion of the study Follow-up questionnaires have been administered every two years subsequently Blood samples were collected on a subsample of the women between 1989-1990 and stored for analysis of germline DNA and circulating biomarkers
The cardiovascular component is funded through May 2029
DESIGN NARRATIVE
In 1976 121700 nurses ages 30-55 completed and returned the initial Nurses Health Study questionnaire and comprise the Nurses Health Study cohort The cohort has been followed by means of biennial mailed questionnaires A total of 109413 participants responded to the 1978 questionnaire In addition 400 women who replied in 1976 stated that they did not wish to continue in the study and 390 women died In 1980 the first major dietary assessment was added to the questionnaire In the 1978-1980 interval there were 624 deaths 300 women declined further participation approximately 99000 completed the full questionnaire including the dietary questionnaire and another 4000 completed an abbreviated questionnaire for a total of about 103000 responses In 1982 the overall response was 101174 The approximately 19000 living non-respondents were followed by telephone yielding 71 percent of the non-respondents Thus at the end of 1982 current information was available on 116150 or 954 percent of the original cohort A subset of 32826 women provided blood samples between 1989 and 1990 Genotyping on 1186 women 382 with coronary heart disease and 804 matched controls was performed using Affymetrix 60 platform
Deaths in the cohort were usually reported by next-of-kin or postal authorities At the completion of each mailing cycle the National Death Index was searched for names of non-respondents who might have died By comparing deaths ascertained from independent sources the study ascertained an estimated 98 percent of deaths Death certificates were obtained from state vital statistics departments to confirm all reported deaths For all death certificates indicating possible cardiovascular disease permission to obtain further information was requested from family members Confirmed coronary heart disease death required additional information beyond the death certificate such as autopsy reports ECG and enzyme changes of myocardial infarction prior to death classical chest pain immediately prior to death prior documented myocardial infarction or angina or prior cardiac catheterization showing severe coronary disease
Data were collected on date of birth weight cigarette smoking menopausal status and current interim use of menopausal hormone therapy Data were also collected on incident cases of nonfatal myocardial infarction stroke pulmonary embolism and angina pectoris These items appeared on each questionnaire In addition nutritional parameters were assessed by a self-administered semi-quantitative food frequency questionnaire in 1986 and again in 1990
The study was renewed in 1993 with particular attention given to dietary antioxidants other nutritional factors physical activity regional fat distribution menopausal estrogen and progestin therapy and biochemical markers including plasma lipids and apoproteins Follow-up for nonfatal cardiovascular disease events is over 92 percent for the original 121700 participants Fatal cardiovascular events are documented by death certificates and confirmed and classified by review of hospital records autopsy reports and interviews with next of kin Searches of the National Death Index for all nonrespondents ensure the identification of remaining deaths resulting in mortality follow-up that is more than 98 percent complete
The study was renewed in FY 2002 to continue follow-up through March 2007 A major aim of that renewal was to compare the predictive capability of several biochemical and genetic markers of inflammation and endothelial activation for coronary heart disease versus stroke in women C-reactive protein CRP E-selectin intercellular adhesion molecule-1 endothelin-1 and polymorphisms of the CRP and E-selectin genes The study also continues the investigation of lifestyle determinants of cardiovascular disease including menopausal hormone therapy dose formulation and duration of use and alcohol consumption dose and beverage type in the full cohort and interactions of these exposures with the above biomarkers and with novel genetic markers prothrombin and alcohol dehydrogenase-3 gene polymorphisms Genotypes from 1186 women typed as part of a genome-wide association study of coronary heart disease were used to study genetic factors associated with cardiovascular disease and the interplay of genes and diet on cardiovascular risk Subsequent renewal cycles included study of plasma adipokines and metabolomic predictors including gut flora metabolites such as trimethylamine N-oxide choline and L-carnitine of coronary heart disease and comprehensive metabolomic profiling of coronary heart disease cases and controls and development of metabolomic risk scores for coronary heart disease During the current funding cycle researchers will conduct comprehensive proteomic profiling of coronary heart disease risk and the relationship to diet and other lifestyle factors
The Nurses Health Study began in 1976 when 121700 female registered nurses living in eleven states completed a mailed questionnaire that included items about their medical history diet and other risk factors for cancer The National Cancer Institute funded the first three years of the study and subsequent years on data pertaining to cancer In 1980 the National Heart Lung and Blood Institute began funding the cardiovascular portion of the study Follow-up questionnaires have been administered every two years subsequently Blood samples were collected on a subsample of the women between 1989-1990 and stored for analysis of germline DNA and circulating biomarkers
The cardiovascular component is funded through May 2029
DESIGN NARRATIVE
In 1976 121700 nurses ages 30-55 completed and returned the initial Nurses Health Study questionnaire and comprise the Nurses Health Study cohort The cohort has been followed by means of biennial mailed questionnaires A total of 109413 participants responded to the 1978 questionnaire In addition 400 women who replied in 1976 stated that they did not wish to continue in the study and 390 women died In 1980 the first major dietary assessment was added to the questionnaire In the 1978-1980 interval there were 624 deaths 300 women declined further participation approximately 99000 completed the full questionnaire including the dietary questionnaire and another 4000 completed an abbreviated questionnaire for a total of about 103000 responses In 1982 the overall response was 101174 The approximately 19000 living non-respondents were followed by telephone yielding 71 percent of the non-respondents Thus at the end of 1982 current information was available on 116150 or 954 percent of the original cohort A subset of 32826 women provided blood samples between 1989 and 1990 Genotyping on 1186 women 382 with coronary heart disease and 804 matched controls was performed using Affymetrix 60 platform
Deaths in the cohort were usually reported by next-of-kin or postal authorities At the completion of each mailing cycle the National Death Index was searched for names of non-respondents who might have died By comparing deaths ascertained from independent sources the study ascertained an estimated 98 percent of deaths Death certificates were obtained from state vital statistics departments to confirm all reported deaths For all death certificates indicating possible cardiovascular disease permission to obtain further information was requested from family members Confirmed coronary heart disease death required additional information beyond the death certificate such as autopsy reports ECG and enzyme changes of myocardial infarction prior to death classical chest pain immediately prior to death prior documented myocardial infarction or angina or prior cardiac catheterization showing severe coronary disease
Data were collected on date of birth weight cigarette smoking menopausal status and current interim use of menopausal hormone therapy Data were also collected on incident cases of nonfatal myocardial infarction stroke pulmonary embolism and angina pectoris These items appeared on each questionnaire In addition nutritional parameters were assessed by a self-administered semi-quantitative food frequency questionnaire in 1986 and again in 1990
The study was renewed in 1993 with particular attention given to dietary antioxidants other nutritional factors physical activity regional fat distribution menopausal estrogen and progestin therapy and biochemical markers including plasma lipids and apoproteins Follow-up for nonfatal cardiovascular disease events is over 92 percent for the original 121700 participants Fatal cardiovascular events are documented by death certificates and confirmed and classified by review of hospital records autopsy reports and interviews with next of kin Searches of the National Death Index for all nonrespondents ensure the identification of remaining deaths resulting in mortality follow-up that is more than 98 percent complete
The study was renewed in FY 2002 to continue follow-up through March 2007 A major aim of that renewal was to compare the predictive capability of several biochemical and genetic markers of inflammation and endothelial activation for coronary heart disease versus stroke in women C-reactive protein CRP E-selectin intercellular adhesion molecule-1 endothelin-1 and polymorphisms of the CRP and E-selectin genes The study also continues the investigation of lifestyle determinants of cardiovascular disease including menopausal hormone therapy dose formulation and duration of use and alcohol consumption dose and beverage type in the full cohort and interactions of these exposures with the above biomarkers and with novel genetic markers prothrombin and alcohol dehydrogenase-3 gene polymorphisms Genotypes from 1186 women typed as part of a genome-wide association study of coronary heart disease were used to study genetic factors associated with cardiovascular disease and the interplay of genes and diet on cardiovascular risk Subsequent renewal cycles included study of plasma adipokines and metabolomic predictors including gut flora metabolites such as trimethylamine N-oxide choline and L-carnitine of coronary heart disease and comprehensive metabolomic profiling of coronary heart disease cases and controls and development of metabolomic risk scores for coronary heart disease During the current funding cycle researchers will conduct comprehensive proteomic profiling of coronary heart disease risk and the relationship to diet and other lifestyle factors
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None
Secondary IDs
| Secondary ID | Type | Domain | Link |
|---|---|---|---|
| R01HL034594-28 | NIH | None | httpsreporternihgovquickSearchR01HL034594-28 |