Abstract 026: Biomarkers Of Dairy Fat Intake Associated With Lower Cardiovascular Disease Risk: A Cohort Study And Meta-analysis

Circulation ◽  
2021 ◽  
Vol 143 (Suppl_1) ◽  
Author(s):  
Kathy Trieu ◽  
Saiuj Bhat ◽  
Zhaoli Dai ◽  
Karin Leander ◽  
Bruna Gigante ◽  
...  

Introduction: Dietary recommendations promote low-fat rather than full fat dairy consumption. Emerging evidence, however, has raised doubts if avoidance of dairy fat will lower CVD risk. Traditionally, self-reported estimates of dairy fat intake were used to study its relationship with CVD, which are subject to recall biases and measurement error. Here, we employed circulating levels of pentadecanoic acid [15:0] as a biomarker of dairy fat intake to examine its association with CVD incidence and all-cause mortality in a Swedish population-based cohort. We also conducted a systematic review of prospective studies that assessed 15:0, and other dairy fat biomarkers (heptadecanoic acid [17:0] and trans -palmitoleic acid [ t 16n-7]) and their associations with CVD and all-cause mortality. Hypothesis: We assessed the hypothesis that higher levels of dairy fat biomarkers 15:0, 17:0 and t 16n-7 would be associated with lower risk of incident CVD events and all-cause mortality. Methods: In a cohort of 60-year old Swedish women (n=2133) and men (n=2017), we measured 15:0 in serum cholesterol esters at baseline in 1997-99. Cox proportional hazard models were used to assess the associations between serum 15:0 with CVD outcomes and all-cause mortality, after adjusting for demographics and CVD risk factors. In the meta-analysis, five databases were searched to include prospective observational studies that examined the associations between circulating or adipose tissues levels of 15:0, 17:0 and t 16n-7 and CVD and mortality risks. Pooled associations of each dairy fat biomarker with incidence of CVD and all-cause mortality were estimated using a random-effects model. Results: During a median follow-up of 16.6 years, 578 incident CVD events and 676 deaths were identified using national registers. In multivariable-adjusted models, higher serum 15:0 was associated with lower incidence of CVD in a linear dose-response manner [HR: 0.75 per interquintile range; 95% CI: 0.61, 0.93), but in a non-linear relationship with all-cause mortality (P nonlinearity = 0.03); with a nadir of mortality risk around the median level of 15:0. In the meta-analysis including our Swedish cohort and 17 other studies, the relative risk of total CVD comparing the highest versus the lowest tertile was 0.88 (0.78, 0.99) for 15:0 (n=17), 0.86 (0.79, 0.93) for 17:0 (n=12), and 1.01 (0.91, 1.12) for t16n-7 (n=6). In meta-analyses of ≤3 studies, there was little evidence that dairy fat biomarkers were associated with all-cause mortality. Conclusion: In conclusion, our de novo Swedish cohort study and an updated systematic review including 18 studies suggests that higher levels of dairy fat biomarkers (15:0 and 17:0) were associated with a lower risk of CVD incidence. These results justify further investigation in interventional and experimental studies to elucidate the potential causality of these relationships and relevant mechanisms.

PLoS Medicine ◽  
2021 ◽  
Vol 18 (9) ◽  
pp. e1003763
Author(s):  
Kathy Trieu ◽  
Saiuj Bhat ◽  
Zhaoli Dai ◽  
Karin Leander ◽  
Bruna Gigante ◽  
...  

Background We aimed to investigate the association of serum pentadecanoic acid (15:0), a biomarker of dairy fat intake, with incident cardiovascular disease (CVD) and all-cause mortality in a Swedish cohort study. We also systematically reviewed studies of the association of dairy fat biomarkers (circulating or adipose tissue levels of 15:0, heptadecanoic acid [17:0], and trans-palmitoleic acid [t16:1n-7]) with CVD outcomes or all-cause mortality. Methods and findings We measured 15:0 in serum cholesterol esters at baseline in 4,150 Swedish adults (51% female, median age 60.5 years). During a median follow-up of 16.6 years, 578 incident CVD events and 676 deaths were identified using Swedish registers. In multivariable-adjusted models, higher 15:0 was associated with lower incident CVD risk in a linear dose–response manner (hazard ratio 0.75 per interquintile range; 95% confidence interval 0.61, 0.93, P = 0.009) and nonlinearly with all-cause mortality (P for nonlinearity = 0.03), with a nadir of mortality risk around median 15:0. In meta-analyses including our Swedish cohort and 17 cohort, case–cohort, or nested case–control studies, higher 15:0 and 17:0 but not t16:1n-7 were inversely associated with total CVD, with the relative risk of highest versus lowest tertile being 0.88 (0.78, 0.99), 0.86 (0.79, 0.93), and 1.01 (0.91, 1.12), respectively. Dairy fat biomarkers were not associated with all-cause mortality in meta-analyses, although there were ≤3 studies for each biomarker. Study limitations include the inability of the biomarkers to distinguish different types of dairy foods and that most studies in the meta-analyses (including our novel cohort study) only assessed biomarkers at baseline, which may increase the risk of misclassification of exposure levels. Conclusions In a meta-analysis of 18 observational studies including our new cohort study, higher levels of 15:0 and 17:0 were associated with lower CVD risk. Our findings support the need for clinical and experimental studies to elucidate the causality of these relationships and relevant biological mechanisms.


Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Mahmoud El Iskandarani ◽  
Islam Shatla ◽  
Muhammad Khalid ◽  
Bara El Kurdi ◽  
Timir Paul ◽  
...  

Background: Current guidelines recommend against the use of direct oral anticoagulation (DOAC) therapy in patients with atrial fibrillation (AF) in the setting of significant liver disease (LD) due to lack of evidence in safety and efficacy studies. However, recently studies have investigated the role of DOAC in comparison to Vitamin K antagonist (VKA) in this category of patients. Therefore, we conducted a systematic review and meta-analysis to evaluate the efficacy and safety of this approach. Hypothesis: DOAC is safe and effective compared to VKA in AF with LD patients. Method: Unrestricted search of the PubMed, EMBASE, and Cochrane databases performed from inception until June 1, 2020 for studies comparing DOAC with VKA including more than 100 AF patients with LD. Relevant data were extracted and analyzed using Revman 5.3 software. Hazard ratio (HR) and 95% Confidence interval (CI) were calculated using the random-effects model. Result: A total of 5 studies (3 retrospective and 2 post hoc analysis) were included examining 39,064 patients with AF and LD (25,398 DOAC vs 13,669 VKA). DOAC is associated with lower risk of major bleeding compared to VKA with a HR of 0.68 (95% CI 0.47-0.98; I 2 =53%), all-cause mortality (HR 0.74;95% CI 0.59-0.94; I 2 =61%), and intracranial bleeding (HR 0.48; 95% CI 0.40-0.58; I 2 =0). There was no significant difference in ischemic stroke risk (HR 0.73; 95% CI 0.47-1.14; I 2 =72%) and gastrointestinal bleeding risk (0.96; 95% CI 0.61-1.51; I 2 =41%) between DOAC and VKA. Conclusion: DOAC is non-inferior to VKA regarding ischemic stroke prevention in AF patients with LD. Moreover, DOAC is associated with a lower risk of major bleeding, intracranial bleeding and all-cause mortality. Further randomized trials are needed to validate our findings.


2020 ◽  
Vol 79 (OCE2) ◽  
Author(s):  
Ding Ding Wang ◽  
Aedin Cassidy ◽  
Mario G. Ferruzzi ◽  
Paul Jacques ◽  
Elizabeth Johnson ◽  
...  

AbstractThere is increasing evidence that both black and green tea are beneficial for prevention of cardiovascular disease (CVD). We conducted a systematic review and meta-analysis evaluating the effects of tea flavonoids on cardiovascular (CVD) and all-cause mortality outcomes.Searches across five databases including PubMed and Embase were conducted through November 2018 to identify randomized controlled trials (RCTs) and prospective cohort studies reporting cardiovascular and all-cause mortality outcomes. Two investigators independently conducted abstract and full-text screenings, data extractions, and risk of bias (ROB) assessments using the Nutrition Evidence Library Bias Assessment Tool (NEL BAT). Mixed-effects dose-response meta-regression and standard random-effects meta-analyses for outcomes with ≥ 4 studies were performed. 0 RCTs and 38 prospective cohort studies were included in the systematic review. NEL BAT scores ranged from 0–15 (0 being the lowest risk). Our linear meta-regression model showed that each cup increase in daily tea consumption (about 280 mg and 338 mg of total flavonoids for black and green tea, respectively) was associated with 3–4% lower risk of CVD mortality (predicted adjusted RR = 0.96; CI 0.93–0.99 for green tea and RR = 0.97; CI 0.94–0.99 for black tea). Furthermore, eachcup increase in daily tea consumption was associated a 2% lower risk of all-cause mortality (predicted adjusted relative risk (RR) = 0.98; 95% CI 0.97–0.99 for black tea and RR = 0.98; CI 0.96–0.99 for green tea, respectively). Two studies reported multivariable Cox regression analysis results for the relationship between black tea intake and risks of all-cause mortality outcomes. The results from these two studies were combined with our linear meta-regression result in a random-effects model meta-analysis and showed that each cup increase in daily black tea consumption was associated with an average of 3% lower risk of all-cause mortality (pooled adjusted RR = 0.97; 95% CI 0.87- 1.00) with large heterogeneity (I2 = 81.4%; p = 0.005). Current evidence indicates that increased tea consumption may reduce cardiovascular and all-cause mortality in a dose-response manner. This systematic review was registered on PROSPERO.


2015 ◽  
Vol 115 (2) ◽  
pp. 212-225 ◽  
Author(s):  
Alexandra J. Mayhew ◽  
Russell J. de Souza ◽  
David Meyre ◽  
Sonia S. Anand ◽  
Andrew Mente

AbstractDietary patterns containing nuts are associated with a lower risk of CVD mortality, and increased nut consumption has been shown to have beneficial effects on CVD risk factors including serum lipid levels. Recent studies have reported on the relationship between nut intake and CVD outcomes and mortality. Our objective was to systematically review the literature and quantify associations between nut consumption and CVD outcomes and all-cause mortality. Five electronic databases (through July 2015), previous reviews and bibliographies of qualifying articles were searched. In the twenty included prospective cohort studies (n 467 389), nut consumption was significantly associated with a lower risk of all-cause mortality (ten studies; risk ratio (RR) 0·81; 95 % CI 0·77, 0·85 for highest v. lowest quantile of intake, Phet=0·04, I2=43 %), CVD mortality (five studies; RR 0·73; 95 % CI 0·68, 0·78; Phet=0·31, I2=16 %), all CHD (three studies; RR 0·66; 95 % CI 0·48, 0·91; Phet=0·0002, I2=88 %) and CHD mortality (seven studies; RR 0·70; 95 % CI 0·64, 0·76; Phet=0·65, I2=0 %), as well as a statistically non-significant reduction in the risk of non-fatal CHD (three studies; RR 0·71; 95 % CI 0·49, 1·03; Phet=0·03, I2=72 %) and stroke mortality (three studies; RR 0·83; 95 % CI 0·69, 1·00; Phet=0·54, I2=0 %). No evidence of association was found for total stroke (two studies; RR 1·05; 95 % CI 0·69, 1·61; Phet=0·04, I2=77 %). Data on total CVD and sudden cardiac death were available from one cohort study, and they were significantly inversely associated with nut consumption. In conclusion, we found that higher nut consumption is associated with a lower risk of all-cause mortality, total CVD, CVD mortality, total CHD, CHD mortality and sudden cardiac death.


Circulation ◽  
2018 ◽  
Vol 137 (suppl_1) ◽  
Author(s):  
Jun Li ◽  
Marta Guasch-Ferré ◽  
Yanping Li ◽  
Frank Hu

Background: Previous studies on intake of linoleic acid (LA), a predominant n-6 fatty acid, and risk of mortality from all-cause and cardiovascular disease (CVD) have generated inconsistent results. We performed a systematic review and meta-analysis of prospective cohort studies to summarize the evidence regarding the relation of LA and all-cause and CVD mortality. Methods: We searched MEDLINE and EMBASE databases through June 2017 for prospective cohort studies reporting association of LA (assessed by dietary survey or biomarker in blood or adipose tissue) with all-cause and CVD mortality. In addition, unpublished data from pooling projects were included. We pooled the multivariate-adjusted Hazards ratios (HRs) using random-effect meta-analysis, which allowed for between-study heterogeneity. Results: 27 studies covering 37 prospective cohorts were identified; these included 274,565 individuals with dietary assessment (34,597 all-cause and 10,636 CVD deaths) and 54,794 individuals with biomarker measurements (6,767 all-cause and 5,311 CVD deaths). Comparing the highest category with the lowest, dietary LA intake was associated with a 14% lower risk of all-cause mortality (95% confidence interval [CI], 2%-25%, I 2 =71%) and a 20% lower risk of CVD mortality (95% CI, 13%-26%, I 2 =0). Baseline health status (i.e. general population, CVD/high risk for CVD, or cancer) might be a main source of heterogeneity for the association of dietary LA intake with all-cause mortality. As for biomarkers, 1 SD increment in LA was associated with a 9% lower risk of all-cause mortality (95% CI, 4%-14%, I 2 =61%) and a 10% lower risk of CVD mortality (95% CI, 5%-14%, I 2 =13%). Heterogeneity was presented across tissue types and between genders. Conclusions: In prospective cohort studies, LA intake, assessed by either dietary survey or biomarkers, was inversely associated with all-cause and CVD mortality in a dose-response manner. These data support the current recommendations on polyunsaturated fat intake for prevention of CVD and early death.


2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
K Awad ◽  
M Mohammed ◽  
M M Zaki ◽  
A I Abushouk ◽  
G Y H Lip ◽  
...  

Abstract Background Current evidence from randomized controlled trials on statins for primary prevention of cardiovascular disease (CVD) in older people, especially those aged >75 years, is still lacking. Purpose We conducted a systematic review and meta-analysis of observational studies to extend the current evidence about association of statin use in older people primary prevention group with risk of CVD and mortality. Methods PubMed, Scopus, and Embase were searched from inception until March 18, 2021. We included observational studies (cohort or nested case-control) that compared statin use vs non-use for primary prevention of CVD in older people aged ≥65 years; provided that each of them reported the risk estimate on at least one of the following primary outcomes: all cause-mortality, CVD death, myocardial infarction (MI), and stroke. Risk estimates of each relevant outcome were pooled as a hazard ratio (HR) with a 95% confidence interval (CI) using the random-effects meta-analysis model. Results Ten observational studies (9 cohort and one case-control study; n=872,845) fulfilled our criteria. The overall combined estimate suggested that statin therapy was associated with a significantly lower risk of all-cause mortality (HR: 0.86 [95% CI: 0.79 to 0.93]), CVD death (HR: 0.80 [95% CI: 0.78 to 0.81]), and stroke (HR: 0.85 [95% CI: 0.76 to 0.94]) and a non-significant association with risk of MI (HR: 0.74 [95% CI: 0.53 to 1.02]). The beneficial association of statins with the risk of all-cause mortality remained significant even at higher ages (>75 years old; HR: 0.88 [95% CI: 0.81 to 0.96]) and in both men (HR: 0.75 [95% CI: 0.74 to 0.76]) and women (HR: 0.85 [95% CI: 0.72 to 0.99]). However, this association with the risk of all-cause mortality remained significant only in those with DM (HR: 0.82 [95% CI: 0.68 to 0.98]) but not in those without DM. Conclusions Statin therapy in older people (aged ≥65 years) without CVD was associated with a 14%, 20% and 15% lower risk of all-cause mortality, CVD death and stroke, respectively. The beneficial association with the risk of all-cause mortality remained significant even at higher ages (>75 years old), in both men and women, and in individuals with DM, but not in those without DM. These observational findings support the need for trials to test benefits of statins in those above 75 years of age. FUNDunding Acknowledgement Type of funding sources: None. Figure 1. Results of the meta-analysis


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Mazidi ◽  
D P Mikhailidis ◽  
N Sattar ◽  
P P Toth ◽  
S Judd ◽  
...  

Abstract Background The associations between dietary fats with mortality are poorly delineated. Purpose Using a large prospective cohort we evaluated the link between total fat, mono-unsaturated (MUFA), polyunsaturated (PUFA) and saturated fatty acid (SFA) consumption and all-cause, coronary heart disease (CHD), stroke, and diabetes (T2D)-associated mortality in a representative sample of US adults. We then added our results to a systematic review and meta-analysis. Methods We evaluated 35,080 participants from the National Health and Nutrition Examination Surveys (NHANES) 1988–1999 (19.2 years follow-up) and 1999–2010 (12 years follow-up), with vital status available through December 31, 2011. Cox proportional hazard regression models were used to evaluate the association between baseline quartiles of fat consumption (g/day, 24h recall) and all-cause or cause-specific mortality. For the systematic review, selected databases were searched up to November 2018 and 29 prospective cohorts (n=1,148,117) met inclusion criteria. The DerSimonian-Laird method and generic inverse variance methods were used for random effects meta-analyses. Results In fully adjusted models from our prospective study, there was a negative association between total fat (hazard ratio [HR]:0.90, 95% confidence interval [CI]: 0.82, 0.99, Q4 vs. Q1) and PUFA (0.81,95% CI: 0.78–0.84) consumption and all-cause mortality (Figure), whereas SFA were positively associated with mortality (1.08, 95% CI: 1.04–1.11). In the meta-analysis we found a significant negative association between total fat (HR: 0.89, 95% CI: 0.82–0.97, I2:27%), MUFA (0.93, 95% CI: 0.87–0.99, I2:56%) and PUFA (0.86, 95% CI: 0.80–0.93, I2:63%) consumption and all-cause mortality. No significant association was observed between total fat and both CVD and CHD mortality (0.92, 95% CI: 0.79–1.08, I2:46%, and 1.03, 95% CI: 0.99–1.09, I2:42%, respectively), while a positive association between SFA intake and CHD mortality (1.10, 95% CI: 1.01–1.20, I2:52.6%) was observed. Neither MUFA nor PUFA were associated with CVD and CHD mortality. Inverse associations were observed between MUFA (0.80, 95% CI: 0.67–0.96, I2:0%) and PUFA (0.84, 95% CI: 0.80–0.90, I2:0%) intakes and stroke mortality. All-cause death and total fat intake. Conclusions Our results highlight differential associations of total fat, MUFA and PUFA intake with all-cause mortality, but no association of them with CVD and CHD mortalities. SFA intake was significantly associated with higher all-cause mortality inNHANES and with CHD mortality in our meta-analysis. The type of fat intake appears to be associated with important health outcomes. Acknowledgement/Funding None


BMC Medicine ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Kamal Awad ◽  
Maged Mohammed ◽  
Mahmoud Mohamed Zaki ◽  
Abdelrahman I. Abushouk ◽  
Gregory Y. H. Lip ◽  
...  

Abstract Background Current evidence from randomized controlled trials on statins for primary prevention of cardiovascular disease (CVD) in older people, especially those aged > 75 years, is still lacking. We conducted a systematic review and meta-analysis of observational studies to extend the current evidence about the association of statin use in older people primary prevention group with risk of CVD and mortality. Methods PubMed, Scopus, and Embase were searched from inception until March 18, 2021. We included observational studies (cohort or nested case-control) that compared statin use vs non-use for primary prevention of CVD in older people aged ≥ 65 years; provided that each of them reported the risk estimate on at least one of the following primary outcomes: all cause-mortality, CVD death, myocardial infarction (MI), and stroke. Risk estimates of each relevant outcome were pooled as a hazard ratio (HR) with a 95% confidence interval (CI) using the random-effects meta-analysis model. The quality of the evidence was rated using the GRADE approach. Results Ten observational studies (9 cohorts and one case-control study; n = 815,667) fulfilled our criteria. The overall combined estimate suggested that statin therapy was associated with a significantly lower risk of all-cause mortality (HR: 0.86 [95% CI 0.79 to 0.93]), CVD death (HR: 0.80 [95% CI 0.78 to 0.81]), and stroke (HR: 0.85 [95% CI 0.76 to 0.94]) and a non-significant association with risk of MI (HR 0.74 [95% CI 0.53 to 1.02]). The beneficial association of statins with the risk of all-cause mortality remained significant even at higher ages (> 75 years old; HR 0.88 [95% CI 0.81 to 0.96]) and in both men (HR: 0.75 [95% CI: 0.74 to 0.76]) and women (HR 0.85 [95% CI 0.72 to 0.99]). However, this association with the risk of all-cause mortality remained significant only in those with diabetes mellitus (DM) (HR 0.82 [95% CI 0.68 to 0.98]) but not in those without DM. The level of evidence of all the primary outcomes was rated as “very low.” Conclusions Statin therapy in older people (aged ≥ 65 years) without CVD was associated with a 14%, 20%, and 15% lower risk of all-cause mortality, CVD death, and stroke, respectively. The beneficial association with the risk of all-cause mortality remained significant even at higher ages (> 75 years old), in both men and women, and in individuals with DM, but not in those without DM. These observational findings support the need for trials to test the benefits of statins in those above 75 years of age.


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