Aug 29, 2018
Published on ScienceDaily.com
Postmenopausal factors may have an impact on the heart-protective qualities of high-density lipoproteins (HDL) — also known as ‘good cholesterol’ — according to a study led by researchers in the University of Pittsburgh Graduate School of Public Health.
The findings, published today in Arteriosclerosis, Thrombosis, and Vascular Biology, a journal of the American Heart Association (AHA), indicate that this specific type of blood cholesterol may not translate into a lowered risk of cardiovascular disease in older women — bringing into question the current use of HDL cholesterol in a common equation designed to predict heart disease risk, particularly for women.
HDL is a family of particles found in the blood that vary in sizes and cholesterol contents. HDL has traditionally been measured as the total cholesterol carried by the HDL particles, known as HDL cholesterol. HDL cholesterol, however, does not necessarily reflect the overall concentration, the uneven distribution, or the content and function of HDL particles. Previous research has demonstrated the heart-protective features of HDL. This good cholesterol carries fats away from the heart, reducing the build-up of plaque and lowering the potential for cardiovascular disease.
“The results of our study are particularly interesting to both the public and clinicians because total HDL cholesterol is still used to predict cardiovascular disease risk,” said lead author Samar R. El Khoudary, Ph.D., M.P.H., F.A.H.A., associate professor in Pitt Public Health’s Department of Epidemiology. “This study confirms our previous work on a different group of women and suggests that clinicians need to take a closer look at the type of HDL in middle-aged and older women, because higher HDL cholesterol may not always be as protective in postmenopausal women as we once thought. High total HDL cholesterol in postmenopausal women could mask a significant heart disease risk that we still need to understand.”
El Khoudary’s team looked at 1,138 women aged 45 through 84 enrolled across the U.S. in the Multi-Ethnic Study of Atherosclerosis (MESA), a medical research study sponsored by the National Heart, Lung and Blood Institute of the National Institutes of Health (NIH). MESA began in 1999 and is still following participants today.
The study points out that the traditional measure of the good cholesterol, HDL cholesterol, fails to portray an accurate depiction of heart disease risk for postmenopausal women.
Women are subject to a variety of physiological changes in their sex hormones, lipids, body fat deposition and vascular health as they transition through menopause. The authors are hypothesizing that the decrease of estrogen, a cardio-protective sex hormone, along with other metabolic changes, can trigger chronic inflammation over time, which may alter the quality of HDL particles.
“We have been seeing an unexpected relationship between HDL cholesterol and postmenopausal women in previous studies, but have never deeply explored it,” said El Khoudary. Her study looked at two specific measurements of HDL to draw the conclusion that HDL cholesterol is not always cardio-protective for postmenopausal women, or not as ‘good’ as expected.
The number and size of the HDL particles and total cholesterol carried by HDL particles was observed. The study also looked at how age when women transitioned into postmenopause, and the amount of time since transitioning, may impact the expected cardio-protective associations of HDL measures.
The harmful association of higher HDL cholesterol with atherosclerosis risk was most evident in women with older age at menopause and who were greater than, or equal to, 10 years into postmenopause.
In contrast to HDL cholesterol, a higher concentration of total HDL particles was associated with lower risk of atherosclerosis. Additionally, having a high number of small HDL particles was found beneficial for postmenopausal women. These findings persist irrespective of age and how long it has been since women became postmenopausal.
On the other hand, large HDL particles are linked to an increased risk of cardiovascular disease close to menopause. During this time, the quality of HDL may be reduced, increasing the chance for women to develop atherosclerosis or cardiovascular disease. As women move further away from their transition, the quality of the HDL may restore — making the good cholesterol cardio-protective once again.
“Identifying the proper method to measure active ‘good’ HDL is critical to understanding the true cardiovascular health of these women,” said senior author Matthew Budoff, M.D., of Los Angeles Biomedical Research Institute.
El Khoudary recently was awarded funding from the National Institute on Aging to expand upon this research work. Her goal is to continue understanding the link between quality of good cholesterol over the menopause transition and women’s risk of cardiovascular disease later in life. She also seeks to examine the biological mechanisms that contribute to quality change of good cholesterol, so that the cardio-protective contribution of good cholesterol to postmenopausal women’s health can be clarified, which would impact guidelines for screening and treatment.
Additional authors on this study are Indre Ceponiene, M.D., Ph.D., of Harbor-UCLA Medical Center and Lithuanian University of Health Sciences; Saad Samargandy, M.P.H., of Pitt; James H. Stein, M.D., and Matthew C. Tattersall, D.O., M.S., both of University of Wisconsin; Dong Li, Ph.D., of Los Angeles Biomedical Research Center in Torrance CA.
This research was funded by NIH grants R01 HL071739, N01-HC-95159, N01-HC-95160, N01-HC-95161, N01-HC-95162, N01-HC-95163, N01-HC-95164, N01-HC-95165, N01-HC-95166, N01-HC-95167, N01-HC-95168, N01-HC-95169, UL1-TR-000040, UL1 TR 001079 and UL1-RR-025005; and a grant from Quest Diagnostics.
Story Source: Chicago, University of Pittsburgh Schools of the Health Sciences. “‘Good cholesterol’ may not always be good.” ScienceDaily. ScienceDaily, 19 July 2018. <www.sciencedaily.com/releases/2018/07/180719085420.htm>.
Aug 29, 2018
Published on ScienceDaily.com
Four out of ten patients with atrial fibrillation but no history of stroke or transient ischaemic attack have previously unknown brain damage, according to the first results of the Swiss Atrial Fibrillation Cohort Study (Swiss-AF) presented today at ESC Congress 2018.
“Our results suggest that clinically unrecognised brain damage may explain the association between dementia and atrial fibrillation in patients without prior stroke,” said Co-Principal Investigator Professor David Conen of McMaster University, Hamilton, Canada.
Patients with atrial fibrillation have a significantly increased risk of stroke, which is why most are treated with blood thinners (oral anticoagulation). This increased stroke risk is probably the main reason why patients with atrial fibrillation also face an increased risk of cognitive dysfunction and dementia. However, the relationship between atrial fibrillation and dementia has also been shown among patients without prior strokes, meaning that additional mechanisms have to be involved.
Clarifying the mechanisms by which atrial fibrillation increases the risk of cognitive dysfunction and dementia is a first step towards developing preventive measures.
Swiss-AF is a prospective, observational study designed to pinpoint the mechanisms of cognitive decline in patients with atrial fibrillation.2 This analysis investigated the prevalence of silent brain damage in atrial fibrillation patients.
The study enrolled 2,415 patients aged over 65 years with atrial fibrillation between 2014 and 2017 from 14 centres in Switzerland. All patients without contraindications underwent standardised brain magnetic resonance imaging and the images were analysed in a central core laboratory. Scans were available in 1,736 patients. Of those, 347 (20%) patients had a history of stroke and/or transient ischaemic attack and were excluded from the analysis.
The final analysis included 1,389 patients with atrial fibrillation but no history of stroke or transient ischaemic attack. The average age of participants was 72 years, and 26% were women. The scans showed that 569 (41%) patients had at least one type of previously unknown brain damage: 207 (15%) had a cerebral infarct, 269 (19%) had small bleeds in the brain (microbleeds), and 222 (16%) had small deep brain lesions called lacunes.
“Four in ten patients with atrial fibrillation but no history of stroke or transient ischaemic attack had clinically unrecognised ‘silent’ brain lesions,” said Professor Conen. “This brain damage could trigger cognitive decline.”
Most study participants (1,234; 89%) were treated with oral anticoagulants. Co-Principal investigator Professor Stefan Osswald of University Hospital Basel, Switzerland, noted that the cross-sectional analysis looked at the data at a single point in time and cannot address the question of whether the cerebral infarcts and other brain lesions occurred before or after initiation of oral anticoagulation. But he said: “The findings nevertheless raise the issue that oral anticoagulation might not prevent all brain damage in patients with atrial fibrillation.”
Professor Conen said: “All Swiss-AF participants underwent extensive cognitive testing. These data will be analysed to see whether patients with silent brain lesions also have impaired cognitive function.” Collaborations with other study groups will help to sort out whether these findings are specific to patients with atrial fibrillation.
Story Source:”Four out of 10 patients with atrial fibrillation have unknown brain damage.” ScienceDaily. ScienceDaily, 26 August 2018. <www.sciencedaily.com/releases/2018/08/180826120744.htm>.
Aug 28, 2018
The original information provided at Braincouncil.eu
In July this year, European Brain Council launched a statement “Counting down to zero: Towards a future with underfunded health research?” which calls on the European Commission, the European Parliament and the Council to increase the budget of the “Horizon Europe” programme to at least €120 billion. What is more, the statement calls on European decision-makers to redistribute the budget in order to ensure that more funding is allocated to the “health” cluster under Pillar II.
The proposal for “Horizon Europe”, published in June 2018, includes an overall budget of €94.1 billion in inflation-adjusted prices. Within this budget, roughly €7.7 billion is proposed to fund the “Health” cluster that is part of the pillar “Global Challenges and Industrial Competitiveness”.
EBC welcomes the increase of the overall draft budget but firmly believes that the proposed budget as it currently stands is insufficient to effectively address today’s societal challenges. The treatment of brain disorders alone is estimated to cost close to €800 billion annually[1], which makes adopting a robust 9th Framework Programme with a strong focus on accelerating health research of paramount importance. What is more, the proposed budget for the “Health” cluster confirms a steady decrease of funding over time and across Framework Programmes, as health was previously allocated 12% under the 7th Framework Programme, 10% under Horizon 2020 and now 8% in the Horizon Europe proposal.
“We are highly concerned about the budget of €7.7 billion provisionally allocated to the “health” cluster under
Pillar II. This amount is not commensurate with the total budget increase and will clearly be insufficient to
effectively address the societal challenges associated with health research. Moreover, this budget confirms a
steady decrease of funding over time and across Framework Programmes, as health was previously allocated
12% under the 7th Framework Programme, 10% under Horizon 2020 and now 8% in the Horizon Europe
proposal. For continued success in European research, we find it imperative that this downward trend is
stopped and reverted.”– says the statement.
The full statement can be accessed here.
EBC invites all organizations, operating at national and/or EU level, that are supportive of the call to join as co-signatory of the statement. Please contact the EBC office (info@braincouncil.eu or +32 (0)2 513 27 57) should you be interested in having the logo of your organization added to the list of signatories.
Aug 24, 2018
The following content was first published on EU Commission official website
According to a recently published study, European patients are still generally unaware of their rights and the possibility to access health services in other EU Member States, as well as of the existence of National Contact Points (NCPs). But the situation is improving.
National Contact Points (NCPs) aim to help patients exercise their rights under the Cross-border Healthcare Directive. But how can they improve their work?
Using a combination of research methods, including a literature review, an analysis of legal texts, a website analysis, a pseudo-patient investigation, and surveys of NCPs and patients, the aim of the study carried out by Ecorys, KU Leuven and GfK Belgium was to identify how to improve the current level of information on cross-border healthcare available to patients.
Websites
The study found that although the information available to patients on NCP websites was adequate, the websites themselves need improvements, especially the sections on patients’ rights (for incoming patients), quality and safety standards (for incoming patients) and reimbursement of cross-border healthcare costs (for outgoing patients).
However, compared to the results of the earlier Evaluative study(fieldwork carried out in 2014), the NCPs have made significant progress in this area.
Toolbox and training material
This study has also resulted in the development of a practice-orientated toolbox and training material to help the NCPs improve the quality of information for patients, as well as a set of Guiding Principles and indicators for establishing an NCP service that is more uniform, patient-centred and in line with the legal requirements. This will contribute to high level information provision to patients.
The study feeds into the upcoming implementation report on the operation of the Cross-border Healthcare Directive due this October.
More information
Aug 8, 2018
Solitaire™ With the Intention For Thrombectomy Plus Intravenous t-PA Versus DIRECT Solitaire™ Stent-retriever Thrombectomy in Acute Anterior Circulation Stroke (SWIFT DIRECT)
Background
The SWIFT DIRECT trial investigates the emergency treatment of patients with an acute ischaemic stroke. An ischaemic stroke is caused by the blockage of one or more blood vessels in the brain. A clot blocks the blood vessels and blood can no longer circulate. This results in an undersupply of blood and oxygen to the brain regions supplied by these vessels. If the under-supply lasts longer than a few minutes, there is a risk that nerve cells might die. An ischaemic cerebral infarction is a life-threatening situation.
For years, the only causal treatment was the administration of a clot-lysing drug called tissue plasminogen activator. The drug, however, may induce bleedings and is not sufficiently effective in patients with very large clots. In 2014, a new treatment, the so-called mechanical thrombectomy, has been established. With this therapy, nearly all types of large blood clots can directly be removed from the vessel using a specialized catheter. Trials have shown that patients treated with tissue plasminogen activator and mechanical thrombectomy have better outcomes than patients treated with tissue plasminogen activator only. Hence, the current standard treatment in patients with large clots is administration of tissue plasminogen activator followed by mechanical thrombectomy.
As administration of tissue plasminogen activator may also harm the patient and is not effective in patients with large clots, we want to investigate how potent direct mechanical thrombectomy (without prior administration of tissue plasminogen activator) is. The purpose of this trial is thus to compare direct removal of the clot with mechanical thrombectomy versus tissue plasminogen activator administration followed by removal of the clot with mechanical thrombectomy. Only patients with large clots and direct access to mechanical thrombectomy can be included in the trial.
We are conducting this trial to improve the emergency treatment for affected patients with an acute ischaemic stroke. This project is organised by the Neuro Clinical Trial Unit at the University of Bern, Switzerland and will be carried out at several hospitals in Europe and Canada.
What does it mean for patients to participate in this clinical trial?
Trial participants will be assigned by chance to one of two groups (half of the patients will be in each group). In the ‘treatment group’ the blood clot is removed directly with mechanical thrombectomy. In the ‘standard group’, participants first receive blood clot-dissolving medication followed by mechanical thrombectomy to remove the clot.
Both treatment options are commonly used standard treatments. The choice between the two is part of clinical routine at the hospital and lies upon the judgement of the treating physician. Except for the phone interview 90 days after the infarction incident, all examinations are part of standard treatment routine independent from the trial.
General information about the trial
| Study type: |
Multicenter, prospective, randomized, open label, blinded endpoint (PROBE) trial |
| Trial start and end: |
October 2017 to December 2020 |
| Sponsor-Investigators: |
Prof. Dr. med. Urs Fischer, Neurology, and
Prof. Dr. med. Jan Gralla, Neuroradiology,
University Hospital Bern, Inselspital, Switzerland |
| Total number of participants: |
404 patients |
| Trial duration for each participant: |
3 months |
| Participating countries: |
Austria, Canada, Finland, France, Germany, Spain and Switzerland |
| Financial support: |
Medtronic (Minneapolis, USA) |
| Trial registration: |
www.clinicaltrials.gov, No.: NCT03192332 |
Please visit the website www.swift-direct.com for further information.
This trial is endorsed by SAFE.
