Category Archives: For Carers & Caregivers

Circadian circuit may affect “Sundowning”

News Release
April 9, 2018 | Boston – Beth Israel Deaconess Medical Center

New Discovery May Calm ‘Sundowning’

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BOSTON – Patients with Alzheimer’s disease and other forms of dementia commonly experience the sundown syndrome – a sudden worsening of confusion, agitation and aggression at the end of the day. Its daily pattern suggested that “sundowning,” as the phenomenon is also known, may be governed by the body’s internal biological clock. Synchronized by light and darkness, the circadian clock exerts control over wake/sleep cycles, body temperature, digestion, hormonal cycles and other physiological and behavior patterns. But whether the circadian clock regulated aggressive behavior was unknown.

Now, for the first time, a team of neuroscientists at Beth Israel Deaconess Medical Center (BIDMC) has demonstrated circadian control of aggression in male mice and identified the specific neurons and circuitry regulating the daily pattern. The insight opens the door to potential opportunities for managing the evening-time agitation common in patients with degenerative neurological disorders. The study was published today in Nature Neuroscience.

“Sundowning is often the reason that patients have to be institutionalized, and if clinicians can control this circuit to minimize aggressiveness at the end of the day, patients may be able to live at home longer,” said senior author Clifford B. Saper, MD, Chair of the Department of Neurology at BIDMC. “We examined the biological clock’s brain circuitry and found a connection to a population of neurons known to cause violent attacks when stimulated in male mice. We wanted to know if this represented a propensity for violence at certain times of day.”

Saper and colleagues observed aggressive interactions between male mice – resident mice defending territory against intruders introduced to residents’ cages at different times throughout the day. Counting the intensity and frequency of residents’ attacks on intruders revealed for the first time that aggression in male mice exhibits a daily rhythm.

“The mice were more likely to be aggressive in the early evening around lights out, and least aggressive in the early morning, around lights on,” Saper said. “It looks like aggressiveness builds up in mice during the lights on period, and reaches a peak around the end of the light period.”

Next, the scientists used genetics-based tools to manipulate neurons known to regulate the central circadian clock. When Saper and colleagues inhibited these neurons by disabling their ability to produce a specific neurotransmitter, the mice lost the daily waxing and waning of their aggressive tendencies. These genetically manipulated mice were more aggressive overall, demonstrating a significant increase in total time attacking intruders.

Using optogenetics – a technique that uses light to activate or deactivate targeted brain cells – to map brain circuitry revealed two parallel pathways between the biological clock and a population of neurons in a sub-region of the hypothalamus (called the VMHvl) known to cause violent attacks when stimulated in male mice.

Taken together, the experiments showed that this circadian circuit kept aggressiveness in check in the early morning; stimulating it prevented attack, while inhibiting it promoted attack. Because stimulating the neurons in question cools off aggression, Saper suggests that controlling this circuit could potentially make animals – and perhaps people – less aggressive.

“Our results in mice mimic the patterns of increased aggression seen in patients during sundowning,” Saper said. “This new research suggests this pathway may be compromised in neurodegenerative diseases. Examining changes to this pathway in patients could provide insight into future interventions that could greatly improve the quality of life for patients and caregivers alike.”

In addition to Saper, investigators included co-first authors William D. Todd and Henning Fenselau, Joshua L. Wang, Natalia L. Machado, Anne Venner, Rebecca Broadhurst, Satvinder Kauer, Bradford B. Lowell, and Patrick M. Fuller, of BIDMC and Harvard Medical School; Rong Zhang, of Boston Children’s Hospital and Harvard Medical School; Timothy Lynagh of the University of Copenhagen; and David P. Olsen, of the University of Michigan, Ann Arbor.

This work was supported by the G. Harold and Leila Y. Mathers Foundation and the US National Institutes of Health (NIH) (grants NS072337, NS085477, AG09975, HL095491 NS073613, NS092652, NS103161, DK111401, DK075632, DK096010, DK089044, DK046200, DK057521, NS084582-01A1 and HL00701-15. Additional support came from the Alzheimer’s Association (AARF16-443613), CNPq (National Health Council for Scientific and Technological Development), and CAPES (Coordination for the Improvement of Higher Education Personnel).

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Neglect common in English care homes

News Release
March 21, 2018 | London – Neglect common in English care homes

The largest-ever survey of care home staff in England, led by UCL researchers, has found that neglectful behaviours are widespread.

Elder care

For the study, published today in PLOS ONE, care home staff were asked anonymously about positive and negative behaviours they had done or had witnessed colleagues doing.

Dr Claudia Cooper (UCL Psychiatry), the study’s lead author, said: “We found low rates of verbal and physical abuse; the abusive behaviours reported were largely matters of neglect.

“These behaviours were most common in care homes that also had high rates of staff burnout, which suggests it’s a consequence of staff who are under pressure and unable to provide the level of care they would like to offer.”

From 92 care homes across England, 1,544 care home staff responded to the survey. The staff were asked whether they had, in the past three months, witnessed a range of positive and negative behaviours. Their responses were linked to data from each care home describing a measure of burnout in care home staff.

Some negative behaviours were categorised as ‘abusive’, using a standard definition,* and based on the behaviour reported, rather than the intention of the care home staff. The most common abusive behaviours were: making a resident wait for care (26% of staff reported that happening); avoiding a resident with challenging behaviour (25%); giving residents insufficient time for food (19%); and taking insufficient care when moving residents (11%). Verbal abuse was reported by 5% of respondents, and physical abuse by 1.1%.

At least some abuse was identified in 91 of the 92 care homes.

Positive behaviours were reported to be much more common than abusive behaviours, however some positive but time-consuming behaviours were notably infrequent.  For instance, more than one in three care home staff were rarely aware of a resident being taken outside of the home for their enjoyment, and 15% said activities were almost never planned around a resident’s interests.

“Most care homes, and their staff, strive to provide person-centred care, meaning that care is designed around a person’s needs, which requires getting to know the resident and their desires and values. But due to resources and organisational realities, care can often become more task-focused, despite intentions and aspirations to deliver person-centred care,” said co-author Dr Penny Rapaport (UCL Psychiatry).

“Carers can’t just be told that care should be person-centred – they need to be given the support and training that will enable them to deliver it,” she said.

The study is part of the UCL MARQUE cohort study, which is also looking into cost-effective interventions to improve the quality of care for people with dementia, and will be using this anonymous reporting as a measure of how well training interventions are working.

More than two thirds of care homes residents have dementia. Agitated behaviours such as pacing, shouting or lashing out are more common in dementia, and can make provision of person-centred care very challenging for care staff to deliver, often with minimal training and limited resources.

“With the right training, care home staff may be able to deliver more effective care that doesn’t need to be more expensive or time-consuming. If they understand and know how to respond to behaviour, they may be able to do more without greater resources,” said the study’s senior author, Professor Gill Livingston (UCL Psychiatry).

Dr Doug Brown, Chief Policy and Research Officer at Alzheimer’s Society, commented: “70% of people living in care homes have dementia, and it’s clear from these findings that they’re bearing the brunt of a chronically underfunded social care system.

“It’s upsetting but unsurprising that abusive behaviours were more common in homes with higher staff burnout. We’ve heard through our helpline of people with dementia not being fed, or not getting the drugs they need, because a carer isn’t properly trained, or a care home is too short-staffed.

“By 2021, a million people in the UK will have dementia. The government must act now, with meaningful investment and reform, or we risk the system collapsing completely and people with dementia continuing to suffer needlessly.”

The study was conducted by researchers at UCL and the Camden and Islington NHS Foundation Trust, and funded by the Economic and Social Research Council and the National Institute for Health Research.

Links

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Media contact

Chris Lane

Tel: +44 (0)20 7679 9222

Email: chris.lane [at] ucl.ac.uk

The onset of Alzheimer’s disease: the importance of family history

News Release
February 26, 2018 | QUEBEC – The onset of Alzheimer’s disease: the importance of family history

You’re about to turn 60, and you’re fretting. Your mother has had Alzheimer’s disease since the age of 65. At what age will the disease strike you? A Canadian study published in JAMA Neurology shows that the closer a person gets to the age at which their parent exhibited the first signs of Alzheimer’s, the more likely they are to have amyloid plaques, the cause of the cognitive decline associated with the disease, in their brain.

In this study involving a cohort of 101 individuals, researcher Sylvia Villeneuve (Douglas Mental Health University Institute; CIUSSS de l’Ouest-de-l’Île-de-Montréal) shows that the difference between a person’s age and the age of their parent at the onset of the disease is a more important risk factor than their actual age.

A 60-year-old whose mother developed Alzheimer’s at age 63 would be more likely to have amyloid plaques in their brain than a 70-year-old whose mother developed the disease at age 85,” explains Villeneuve, an assistant professor at McGill University and a core faculty member at The Neuro’s McConnell Brain Imaging Centre.

Her team of scientists also found that the genetic impact of Alzheimer’s disease is much greater than previously thought.

“Upon examining changes in the amyloid biomarker in the cerebrospinal fluid samples from our subjects, we noticed that this link between parental age and amyloid deposits is stronger in women than in men. The link is also stronger in carriers of the ApoE4 gene, the so-called ‘Alzheimer’s gene’,” says Villeneuve.

Towards earlier detection of the disease

The researcher and her team successfully duplicated their results in two independent groups, one, consisting of 128 individuals from a University of Washington-St. Louis cohort, the other consisting of 135 individuals from a University of Wisconsin-Madison cohort. They also reproduced their results using an imaging technique that enables one to see amyloid plaques directly in the brains of living persons.

Their study is paving the way for the development of inexpensive methods for the early identification of people at risk for Alzheimer’s disease. According to the Alzheimer Society of Canada, 564,000 Canadians currently have Alzheimer’s disease or another form of dementia. The figure will be 937,000 within 15 years. Presently, there is no truly effective treatment for this disease.

This research was funded by grants from a Canadian research chair, the Canadian Institutes of Health Research, the Canadian Foundation for Innovation, the Canadian Brain Research Fund, the Alzheimer Society of Canada, and the Fonds de recherche du Québec — Santé.

The article entitled “Proximity to parental symptom onset and amyloid burden in sporadic Alzheimer’s disease” was published in JAMA Neurology on February 26, 2018. DOI:10.1001/jamaneurol.2017.5135

Source: http://www.douglas.qc.ca/?locale=en

Just the two of us: Holding hands can ease pain, sync brainwaves

News Release
Februarypexels-photo-325884.jpeg 28, 2018 | COLORADO – Just the two of us: Holding hands can ease pain, sync brainwaves

Reach for the hand of a loved one in pain and not only will your breathing and heart rate synchronize with theirs, your brain wave patterns will couple up too, according to a new study.

The study, by researchers with CU Boulder and University of Haifa and published in the journal Proceedings of the National Academy of Sciences (PNAS) this week, also found that the more empathy a comforting partner feels for a partner in pain, the more their brainwaves fall into sync. And the more those brain waves sync, the more the pain goes away.

Key takeaways
  • Holding the hand of a loved one in pain can synchronize breathing, heart rate and brain wave patterns.
  • The more empathy a comforting partner feels for a partner in pain, the more their brainwaves fall into sync.
  • Increased brain synchronization is associated with less pain.

“We have developed a lot of ways to communicate in the modern world and we have fewer physical interactions,” said lead author Pavel Goldstein, a postdoctoral pain researcher in the Cognitive and Affective Neuroscience Lab at CU Boulder. “This paper illustrates the power and importance of human touch.”

The study is the latest in a growing body of research exploring a phenomenon known as “interpersonal synchronization,” in which people physiologically mirror the people they are with. It is the first to look at brain wave synchronization in the context of pain, and offers new insight into the role brain-to-brain coupling may play in touch-induced analgesia, or healing touch.

Goldstein came up with the experiment after, during the delivery of his daughter, he discovered that when he held his wife’s hand, it eased her pain.

“I wanted to test it out in the lab: Can one really decrease pain with touch, and if so, how?”

He and his colleagues at University of Haifa recruited 22 heterosexual couples, age 23 to 32 who had been together for at least one year and put them through several two-minute scenarios as electroencephalography (EEG) caps measured their brainwave activity. The scenarios included sitting together not touching; sitting together holding hands; and sitting in separate rooms. Then they repeated the scenarios as the woman was subjected to mild heat pain on her arm.

Merely being in each other’s presence, with or without touch, was associated with some brain wave synchronicity in the alpha mu band, a wavelength associated with focused attention. If they held hands while she was in pain, the coupling increased the most.

Researchers also found that when she was in pain and he couldn’t touch her, the coupling of their brain waves diminished. This matched the findings from a previously published paper from the same experiment which found that heart rate and respiratory synchronization disappeared when the male study participant couldn’t hold her hand to ease her pain.

“It appears that pain totally interrupts this interpersonal synchronization between couples and touch brings it back,” says Goldstein.

Subsequent tests of the male partner’s level of empathy revealed that the more empathetic he was to her pain the more their brain activity synced. The more synchronized their brains, the more her pain subsided.

How exactly could coupling of brain activity with an empathetic partner kill pain? More studies are needed to find out, stressed Goldstein. But he and his co-authors offer a few possible explanations. Empathetic touch can make a person feel understood, which in turn – according to previous studies – could activate pain-killing reward mechanisms in the brain.

“Interpersonal touch may blur the borders between self and other,” the researchers wrote.

The study did not explore whether the same effect would occur with same-sex couples, or what happens in other kinds of relationships. The takeaway for now, Pavel said: Don’t underestimate the power of a hand-hold.

“You may express empathy for a partner’s pain, but without touch it may not be fully communicated,” he said.

Irit Weissman-Fogel, of University of Haifa, and Guillaume Dumas and Simone Shamay-Tsoory, of Florida Atlantic University, contributed to this study. It was supported with a grant from the Binational Science Foundation.

Source: https://www.colorado.edu/today/2018/02/28/just-two-us-holding-hands-can-ease-pain-sync-brainwaves?utm_source=colorado.edu&utm_medium=Hold%20hands%20to%20ease%20a%20lover%27s%20pain%2C%20and%20your%20brains%20couple%20up%2C%20too&utm_campaign=Homepage&utm_

Written by Lisa Ann Marshall.

Love & Dementia

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Dementia can take away memories but it cannot take away my love. Love is a feeling that will live on in my heart and soul.

Jo Sun

 

Learning from zoos – how our environment can influence our health

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CoolR/Shutterstock

Emmanuel Tsekleves, Lancaster University

We are told that we are a nation of couch potatoes, lacking the will and the strength to turn around the obesity tanker. We all need a little help in our quest for a healthier life and design can play a crucial part. If we designed our towns, cities, homes and workplaces more like animal experts design zoos, we could be one step nearer to reaching our fitness goals – as long as we can have some fun along the way.

It is reported that British people will be the fattest in Europe by 2025 and that if we want to reverse this we should have a healthier lifestyle by exercising more and eating less. But we are often made to feel guilty for not sticking to theses healthy lifestyle plans. I would suggest that before we start blaming people for adopting sedentary lifestyles, we should be taking a step back to look at the design of the environments, towns and cities in which we live.

The link between the design of the built and natural environment and its role in our health and well-being has been well explored. Now new research, led by Lancaster University, on “design for health” suggests that the environment, including buildings, cities, urban spaces and transport infrastructure, is closely linked to the lifestyles we adopt.

What is abundantly clear is that, as we shape our environment, it is also shaping us. Our psychological, physiological and physical status as well as our interactions with other people and with the natural environment are all affected. A key challenge that governments and policy makers worldwide are facing is how our built environment and infrastructure should be shaped to support healthier behaviours to prevent disease.

First, we should stop focusing on methods that tell people what to (or not to) do and which attempt to change their behaviour simply through media campaigns and punitive measures, such as tax schemes. While seeking to minimise the barriers that prevent healthy behaviours, we should make sure that the design of new environments is taken into account.

Looking to zoos

A good model would be to look at how zoos are designed. Before a zoo is built, it is common practice for zoologists, biologists, animal psychologists, nutritionists, architects, designers and landscape architects to work closely together to create an environment that optimises the living conditions for the animals.

Important environmental elements, such as vegetation, habitat, lighting, materials and each animal’s requirements are taken into account. The ultimate aim is to design an environment that fully supports the animals’ physical, psychological and social well-being. Ironically, we do not seem to make the same demands when a town, neighbourhood or workplace environment for humans is planned and designed.

Another opportunity that has recently emerged is the healthy new town NHS initiative. The aim is to radically rethink how we live and take an ambitious look at improving health through the built environment. Ten demonstrator towns will be built across England with community health and well-being as their main focus. Clinicians, designers and technology experts will reimagine how healthcare can be delivered in these places. Although this is a step in the right direction, what it is currently missing is the more holistic approach we have seen in the design of the zoos.

A crucial element in designing these towns so they are places that people would want to live in, is to include community members in their creation. This strategy would help design-in health-promoting behaviours, such as access to healthy food outlets or green spaces in which people can walk and exercise.

Embracing playfulness

Playful design – the mapping of playful experiences from games and toys to other non-game contexts – can play an important role here in inviting and encouraging people towards healthier alternatives. For example, the piano stairs project in Stockholm, which converts the metro stairs into a giant functioning piano keyboard – much like the piano made famous in the Tom Hanks movie Big (1988) – demonstrates great promise. It encourages commuters to opt for the intriguing new stairway instead of the escalators to enjoy making musical movements as they go up and down.

A project in The Netherlands, meanwhile, illustrates how everyday street furniture, such as lampposts, benches and bollards, can be inexpensively converted into impromptu exercise devices, inviting people to engage in casual activity and socialise with their neighbours. We could therefore envisage several other contexts were playfulness can transform mundane everyday activities into fun ones that encourage people into a more active and social lifestyle.

We could convert building walls into activity walls to encourage stretching of arms and legs through touch; redesign public squares and walkways into interactive dance floors that invite movement and guide you through a city; and transform workplace spaces and public places into “playgrounds” that boost movement and productivity and decrease lethargy.

The Conversation

So there you have it. If we want to be a nation of lean, mean and healthy citizens we need to learn from zoos and the animals that live in them. And we need to embrace playfulness and enjoy the place where we live. That way, we can tackle life with a hop, skip and a jump.

Emmanuel Tsekleves, Senior Lecturer in Design Interactions, Lancaster University

This article was originally published on The Conversation. Read the original article.

Bilingualism could offset brain changes in Alzheimer’s

A Concordia study sheds light on how language history relates to brain plasticity

News Release
February 6, 2018 | QUEBEC – Bilingualism could offset brain changes in Alzheimer’s

After more than a decade of research, this much we know: it’s good for your brain to know another language.

A new Concordia study goes further, however, focusing specifically on the effects of knowing a second language for patients with Alzheimer’s disease (AD) and mild cognitive impairment (MCI; a risk state for AD).

“Most of the previous research on brain structure was conducted with healthy younger or older adults,” says Natalie Phillips, a professor in the Department of Psychology.

“Our new study contributes to the hypothesis that having two languages exercises specific brain regions and can increase cortical thickness and grey matter density. And it extends these findings by demonstrating that these structural differences can be seen in the brains of multilingual AD and MCI patients.”

Phillips’s study, led by recent Concordia psychology grad Hilary D. Duncan (PhD 17), is soon to be published in Neuropsychologia(Jan, 2018).

New methods: Enter the MRI

Phillips and her team are the first to use high-resolution, whole-brain MRI data and sophisticated analysis techniques to measure cortical thickness and tissue density within specific brain areas.

Namely, they investigated language and cognition control areas in the frontal regions of the brain, and medial temporal lobe structures that are important for memory and are brain areas known to atrophy in MCI and AD patients.

“Previous studies used CT scans, which are a much less sensitive measure,” says Phillips, founding director of Concordia’s Cognition, Aging and Psychophysiology (CAP) Lab.

The study looked at MRIs from participating patients from the Jewish General Hospital Memory Clinic in Montreal.

Their sample included 34 monolingual MCI patients, 34 multilingual MCI patients, 13 monolingual AD patients and 13 multilingual AD patients.

Phillips believes their study is the first to assess the structure of MCI and AD patients’ language and cognition control regions. It is also the first to demonstrate an association between those regions of the brain and memory function in these groups, and the first to control for immigration status in these groups.

“Our results contribute to research that indicates that speaking more than one language is one of a number of lifestyle factors that contributes to cognitive reserve,” Phillips says.

“They support the notion that multilingualism and its associated cognitive and sociocultural benefits are associated with brain plasticity.”

What’s next?

Phillips and her team are already building on their findings.

“Our study seems to suggest that multilingual people are able to compensate for AD-related tissue loss by accessing alternative networks or other brain regions for memory processing. We’re actively investigating that hypothesis now.”

Read the cited study, “Structural brain differences between monolingual and multilingual patients with mild cognitive impairment and Alzheimer disease: Evidence for cognitive reserve.

Source: NEW RESEARCH: Bilingualism could offset brain changes in Alzheimer’s