Can mild-to-moderate hyperhomocysteinaemia impair endothelial function in the absence of other risk factors for cardiovascular disease?

2004 ◽  
Vol 106 (4) ◽  
pp. 345-346
Author(s):  
Marina L. H. HONING ◽  
Coen D. A. STEHOUWER

The majority of clinical studies demonstrate that patients with hyperhomocysteinaemia have an increased risk of atherothrombotic events. However, there is a striking and poorly understood heterogeneity in the severity of clinical features in individuals with hyperhomocysteinaemia. This observation suggests that other factors must exist that modulate the relationship between hyperhomocysteinaemia and clinical disease. Therefore identifying factors that inhibit or enhance the vasculotoxic effects of homocysteine is important, as is elucidation of how homocysteine damages blood vessels. This comment discusses the study of Woodman and colleagues in this issue of Clinical Science in which they investigate the effects of hyperhomocysteinaemia on endothelial function.

Circulation ◽  
2020 ◽  
Vol 141 (Suppl_1) ◽  
Author(s):  
Jennifer J Stuart ◽  
Lauren J Tanz ◽  
Eric B Rimm ◽  
Donna Spiegelman ◽  
Stacey A Missmer ◽  
...  

Introduction: Women with a history of hypertensive disorders in pregnancy (HDP; gestational hypertension [GHTN] or preeclampsia) have an increased risk of CVD risk factors and events compared to women with normotensive pregnancies. However, the extent to which the relationship between HDP and CVD events is mediated by established CVD risk factors is less clear. Hypothesis: We hypothesized that a large proportion of the HDP-CVD relationship would be mediated by subsequent CVD risk factors — chronic hypertension (CHTN), type 2 diabetes (T2D), hypercholesterolemia, and BMI. Methods: Parous women free of prior CVD events, CHTN, T2D, and hypercholesterolemia at first birth in the Nurses’ Health Study II comprised the analytic sample (n=57,974). Pregnancy history was retrospectively reported in 2009. Women were followed for confirmed CVD events (coronary heart disease [non-fatal or fatal MI, fatal CHD] or stroke [non-fatal or fatal]) from first birth through 2015. Potential mediators were self-reported on biennial questionnaires. We used Cox proportional hazards models to estimate hazard ratios (HR) and 95% confidence intervals (CI) for the relationship between HDP in first pregnancy (preeclampsia or GHTN vs. normotension [ref]) and CVD, adjusting for age, race/ethnicity, parental education, family history of CVD before age 60, and pre-pregnancy risk factors (e.g., smoking, diet, and BMI). To evaluate the proportion of the HDP-CVD association that was jointly mediated by the CVD risk factors we used the difference method, comparing a model including these four factors to a model without them. Results: Nine percent of women (n=5,306) had a history of HDP in first pregnancy (preeclampsia: 6.3%; GHTN: 2.9%). CVD events occurred in 650 women with normotension in first pregnancy, 30 with GHTN, and 81 with preeclampsia. Adjusting for pre-pregnancy confounders, women with HDP in first pregnancy had a 63% higher rate of incident CVD (CI: 1.33-2.00) compared to women with normotension in first pregnancy; in particular, the strongest association was observed between preeclampsia and CHD (HR=2.18, CI: 1.62-2.93). The overall HDP-CVD association was largely mediated by the group of four CVD risk factors (HDP: proportion mediation [PM]=65%, CI: 35-87; preeclampsia: PM=57%, CI: 21-87; GHTN: PM=99%, CI: inestimable). All CVD risk factors contributed to mediation, but chronic hypertension accounted for the largest proportion. Conclusions: While approximately 40% of the association between preeclampsia and CVD remained unexplained, almost all the increased risk of CVD conferred by a history of GHTN was jointly accounted for by the development of established risk factors postpartum. Screening for CHTN, T2D, hypercholesterolemia, and overweight/obesity after pregnancy may be especially helpful in CVD prevention among women with a history of HDP.


2021 ◽  
pp. postgradmedj-2021-139839
Author(s):  
Ione Swanepoel ◽  
April Roberts ◽  
Chelsea Brauns ◽  
Devahuti R Chaliha ◽  
Veronica Papa ◽  
...  

Cardiovascular disease (CVD) is one of the greatest disease burdens and takes the lives of many each year. There are many risk factors both modifiable and non-modifiable which contribute to the onset and progression of the disease. Trimethylamine N-oxide (TMAO) in recent years has been found to have a correlation with CVD onset. Those with increased levels of the metabolite have a markedly increased risk of future development of cardiometabolic disorders.This literature review aimed to critique past studies undertaken to find a consensus of the significance of the interrelationship between TMAO and cardiovascular risk. A definite link between TMAO levels and a CVD outcome was found. The majority of the literature stated the relationship with evidence; however, there is still some uncertainty as to why and how the correlation occurs. Further study needs to be done to further dissect and understand the relationship between TMAO and CVD risk.


2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Ian McDonald ◽  
Maureen Connolly ◽  
Anne-Marie Tobin

Psoriasis is a chronic inflammatory skin condition with an increased risk of cardiovascular disease. This risk has been attributed to an association with many independent risk factors including obesity, hypertension, smoking, and dyslipidemia. Psoriasis patients also have lower levels of folate and conversely higher levels of homocysteine, which in itself is a risk factor for cardiovascular disease. It has been postulated that low folate levels in this group may be a direct cause of hyperhomocysteinemia and therefore a treatable risk factor by folate supplementation. This paper looks at the literature published to date on the relationship between psoriasis, homocysteine, and folate levels.


Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1491-P
Author(s):  
APRILL DAWSON ◽  
EMMA GARACCI ◽  
MUKOSO N. OZIEH ◽  
REBEKAH J. WALKER ◽  
LEONARD E. EGEDE

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
E Leiter ◽  
K L Greenberg ◽  
M Donchin ◽  
O Keidar ◽  
S Siemiatycki ◽  
...  

Abstract Background Women from low socio-economic, culturally insular populations are at increased risk for cardiovascular disease (CVD). The ultra-Orthodox Jewish (UOJ) community in Israel is a difficult to access, rapidly growing low socio-economic, insular minority with numerous obstacles to health. The current study investigates CVD-related risk factors (RF) in a sample of OUJ women, comparing sample characteristics with the general population. Addressing the questions, 'Are UOJ women at increased risk for CVD?', 'Which RFs should be addressed beyond the general population's?', this study can inform public health initiatives (PHI) for this and similar populations. Methods Self-administered questionnaires completed by a cluster randomized sample of 239 women from a UOJ community included demographics, fruit, vegetables, and sweetened drink consumption, secondhand smoke exposure, physical activity (PA) engagement, and BMI. Population statistics utilized for comparison of demographic and cardiovascular risk factors were obtained from government-sponsored national surveys. Results Compared with the general population, UOJ women were less likely to consume 5 fruits and vegetables a day (12.7% vs. 24.3%, p<.001) and more likely to consume > 5 cups of sweetened beverages a day (18.6% vs. 12.6%, p=.019). UOJ women also reported less secondhand smoke exposure (7.2% vs. 51.4%, p<.001) and higher rates of PA recommendation adherence (60.1% vs. 25.6%, p<.0001) than the general population. Obesity was higher in UOJ women (24.3% vs. 16.1%, p<.0001). Conclusions This study suggests that PHIs in this population target healthy weight maintenance, nutrition, and PA. As a consequence of this study, the first CVD prevention intervention has been implemented in this population, targeting the identified RFs. Utilizing a mixed methods and community-based participatory approach, this innovative 3-year intervention reached over 2,000 individuals. Key messages This study identified nutrition risk behaviors and high levels of obesity in a difficult to access, minority population. This study informed the planning and implementation of a community-based PHI.


2021 ◽  
Vol 11 (5) ◽  
pp. 328
Author(s):  
Michael Leutner ◽  
Nils Haug ◽  
Luise Bellach ◽  
Elma Dervic ◽  
Alexander Kautzky ◽  
...  

Objectives: Diabetic patients are often diagnosed with several comorbidities. The aim of the present study was to investigate the relationship between different combinations of risk factors and complications in diabetic patients. Research design and methods: We used a longitudinal, population-wide dataset of patients with hospital diagnoses and identified all patients (n = 195,575) receiving a diagnosis of diabetes in the observation period from 2003–2014. We defined nine ICD-10-codes as risk factors and 16 ICD-10 codes as complications. Using a computational algorithm, cohort patients were assigned to clusters based on the risk factors they were diagnosed with. The clusters were defined so that the patients assigned to them developed similar complications. Complication risk was quantified in terms of relative risk (RR) compared with healthy control patients. Results: We identified five clusters associated with an increased risk of complications. A combined diagnosis of arterial hypertension (aHTN) and dyslipidemia was shared by all clusters and expressed a baseline of increased risk. Additional diagnosis of (1) smoking, (2) depression, (3) liver disease, or (4) obesity made up the other four clusters and further increased the risk of complications. Cluster 9 (aHTN, dyslipidemia and depression) represented diabetic patients at high risk of angina pectoris “AP” (RR: 7.35, CI: 6.74–8.01), kidney disease (RR: 3.18, CI: 3.04–3.32), polyneuropathy (RR: 4.80, CI: 4.23–5.45), and stroke (RR: 4.32, CI: 3.95–4.71), whereas cluster 10 (aHTN, dyslipidemia and smoking) identified patients with the highest risk of AP (RR: 10.10, CI: 9.28–10.98), atherosclerosis (RR: 4.07, CI: 3.84–4.31), and loss of extremities (RR: 4.21, CI: 1.5–11.84) compared to the controls. Conclusions: A comorbidity of aHTN and dyslipidemia was shown to be associated with diabetic complications across all risk-clusters. This effect was amplified by a combination with either depression, smoking, obesity, or non-specific liver disease.


2021 ◽  
Vol 14 ◽  
pp. 117954412110287
Author(s):  
Mir Sohail Fazeli ◽  
Vadim Khaychuk ◽  
Keith Wittstock ◽  
Boris Breznen ◽  
Grace Crocket ◽  
...  

Objective: To scope the current published evidence on cardiovascular risk factors in rheumatoid arthritis (RA) focusing on the role of autoantibodies and the effect of antirheumatic agents. Methods: Two reviews were conducted in parallel: A targeted literature review (TLR) describing the risk factors associated with cardiovascular disease (CVD) in RA patients; and a systematic literature review (SLR) identifying and characterizing the association between autoantibody status and CVD risk in RA. A narrative synthesis of the evidence was carried out. Results: A total of 69 publications (49 in the TLR and 20 in the SLR) were included in the qualitative evidence synthesis. The most prevalent topic related to CVD risks in RA was inflammation as a shared mechanism behind both RA morbidity and atherosclerotic processes. Published evidence indicated that most of RA patients already had significant CV pathologies at the time of diagnosis, suggesting subclinical CVD may be developing before patients become symptomatic. Four types of autoantibodies (rheumatoid factor, anti-citrullinated peptide antibodies, anti-phospholipid autoantibodies, anti-lipoprotein autoantibodies) showed increased risk of specific cardiovascular events, such as higher risk of cardiovascular death in rheumatoid factor positive patients and higher risk of thrombosis in anti-phospholipid autoantibody positive patients. Conclusion: Autoantibodies appear to increase CVD risk; however, the magnitude of the increase and the types of CVD outcomes affected are still unclear. Prospective studies with larger populations are required to further understand and quantify the association, including the causal pathway, between specific risk factors and CVD outcomes in RA patients.


2021 ◽  
pp. 1-4
Author(s):  
Simone Vidale

<b><i>Background and Purpose:</i></b> Coronavirus disease 2019 (CO­VID-19) infection is an ongoing pandemic and worldwide health emergency that has caused important changes in healthcare systems. Previous studies reported an increased risk of thromboembolic events, including stroke. This systematic review aims to describe the clinical features and etiological characteristics of ischemic stroke patients with CO­VID-19 infection. <b><i>Method:</i></b> A literature search was performed in principal databases for studies and case reports containing data concerning risk factors, clinical features, and etiological characteristics of patients infected with COVID-19 and suffering from stroke. Descriptive and analytical statistics were applied. <b><i>Results:</i></b> Overall, 14 articles were included for a total of 93 patients. Median age was 65 (IQR: 55–75) years with prevalence in males. Stroke occurred after a median of 6 days from COVID-19 infection diagnosis. Median National of Institute of Health Stroke Scale (NIHSS) score was 19. Cryptogenic (Cry) strokes were more frequent (51.8%), followed by cardioembolic etiology, and they occurred a long time after COVID-19 diagnosis compared with large-artery atherosclerosis strokes (<i>p</i><sub>trend</sub>: 0.03). The clinical severity of stroke was significantly associated with the severity grade of COVID-19 infection (<i>p</i><sub>trend</sub>: 0.03). <b><i>Conclusions:</i></b> Ischemic strokes in COVID-19-infected patients were clinically severe, affecting younger patients mainly with Cry and cardioembolic etiologies. Further multicenter prospective registries are needed to better describe the causal association and the effect of COVID-19 infection on stroke.


2021 ◽  
Vol 8 (1) ◽  
pp. e000515
Author(s):  
Isak Samuelsson ◽  
Ioannis Parodis ◽  
Iva Gunnarsson ◽  
Agneta Zickert ◽  
Claes Hofman-Bang ◽  
...  

ObjectivePatients with SLE have increased risk of myocardial infarction (MI). Few studies have investigated the characteristics of SLE-related MIs. We compared characteristics of and risk factors for MI between SLE patients with MI (MI-SLE), MI patients without SLE (MI-non-SLE) and SLE patients without MI (non-MI-SLE) to understand underlying mechanisms.MethodsWe identified patients with a first-time MI in the Karolinska SLE cohort. These patients were individually matched for age and gender with MI-non-SLE and non-MI-SLE controls in a ratio of 1:1:1. Retrospective medical file review was performed. Paired statistics were used as appropriate.ResultsThirty-four MI-SLE patients (88% females) with a median age of 61 years were included. These patients had increased number of coronary arteries involved (p=0.04), and ≥50% coronary atherosclerosis/occlusion was numerically more common compared with MI-non-SLE controls (88% vs 66%; p=0.07). The left anterior descending artery was most commonly involved (73% vs 59%; p=0.11) and decreased (<50%) left ventricular ejection fraction occurred with similar frequency in MI-SLE and MI-non-SLE patients (45% vs 36%; p=0.79). Cardiovascular disease (44%, 5.9%, 12%; p<0.001) and coronary artery disease (32%, 2.9%, 0%; p<0.001), excluding MI, preceded MI/inclusion more commonly in MI-SLE than in MI-non-SLE and non-MI-SLE patients, respectively. MI-SLE patients had lower plasma albumin levels than non-MI-SLE patients (35 (29–37) vs 40 (37–42) g/L; p=0.002).ConclusionIn the great majority of cases, MIs in SLE are associated with coronary atherosclerosis. Furthermore, MIs in SLE are commonly preceded by symptomatic vascular disease, calling for attentive surveillance of cardiovascular disease and its risk factors and early atheroprotective treatment.


2021 ◽  
Vol 36 (3) ◽  
pp. 299-309 ◽  
Author(s):  
Joshua Elliott ◽  
Barbara Bodinier ◽  
Matthew Whitaker ◽  
Cyrille Delpierre ◽  
Roel Vermeulen ◽  
...  

AbstractMost studies of severe/fatal COVID-19 risk have used routine/hospitalisation data without detailed pre-morbid characterisation. Using the community-based UK Biobank cohort, we investigate risk factors for COVID-19 mortality in comparison with non-COVID-19 mortality. We investigated demographic, social (education, income, housing, employment), lifestyle (smoking, drinking, body mass index), biological (lipids, cystatin C, vitamin D), medical (comorbidities, medications) and environmental (air pollution) data from UK Biobank (N = 473,550) in relation to 459 COVID-19 and 2626 non-COVID-19 deaths to 21 September 2020. We used univariate, multivariable and penalised regression models. Age (OR = 2.76 [2.18–3.49] per S.D. [8.1 years], p = 2.6 × 10–17), male sex (OR = 1.47 [1.26–1.73], p = 1.3 × 10–6) and Black versus White ethnicity (OR = 1.21 [1.12–1.29], p = 3.0 × 10–7) were independently associated with and jointly explanatory of (area under receiver operating characteristic curve, AUC = 0.79) increased risk of COVID-19 mortality. In multivariable regression, alongside demographic covariates, being a healthcare worker, current smoker, having cardiovascular disease, hypertension, diabetes, autoimmune disease, and oral steroid use at enrolment were independently associated with COVID-19 mortality. Penalised regression models selected income, cardiovascular disease, hypertension, diabetes, cystatin C, and oral steroid use as jointly contributing to COVID-19 mortality risk; Black ethnicity, hypertension and oral steroid use contributed to COVID-19 but not non-COVID-19 mortality. Age, male sex and Black ethnicity, as well as comorbidities and oral steroid use at enrolment were associated with increased risk of COVID-19 death. Our results suggest that previously reported associations of COVID-19 mortality with body mass index, low vitamin D, air pollutants, renin–angiotensin–aldosterone system inhibitors may be explained by the aforementioned factors.


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