It’s well established that a traumatic brain injury (TBI) can cause memory and cognitive problems, as well as depression, but now, researchers have looked at the consequences of repetitive head impacts.
They found that people exposed to repetitive head impacts may be more likely to experience difficulties with cognitive functioning and depression years later.
The researchers analysed data from the Brain health Registry on 13,000 adults, five per cent of whom reported having had repetitive head impacts through contact sports, abuse or military service.
They were asked about depressive symptoms and completed cognitive tests.
The paper, by researchers at Boston University and the University of California, San Francisco, reveals that participants who’d had repetitive head impacts and TBI reported greater depression symptoms than those who hadn’t.
Repetitive head injuries were a stronger predictor of depression than TBI, and those who had a history of repetitive head impacts and TBI with loss of consciousness reported the most depressive symptoms.
“The findings underscore that repetitive hits to the head, such as those from contact sport participation or physical abuse, might be associated with later-life symptoms of depression.
“It should be made clear that this association is likely to be dependent on the dose or duration of repetitive head impacts and this information was not available for this study,” said Michael Alosco, associate professor of neurology at BU School of Medicine (BUSM).
Those who’d experienced repetitive head impacts or TBI also performed worse in some of the cognitive tests.
“It should be noted that not all people with a history of repetitive hits to the head will develop later-life problems with cognitive functioning and depression,” says Study author Robert Stern, professor of neurology, neurosurgery and anatomy & neurobiology at BUSM.
“However, results from this study provide further evidence that exposure to repetitive head impacts, such as through the routine play of tackle football, plays an important role in the development in these later-life cognitive and emotional problems.”
The researchers point out, however, that one limitation of the research is that researchers didn’t have data on the extent of participants’ injuries.
Last year, BUSM researchers found that longer someone was exposed to tackle football, the higher the risk of developing the degenerative brain disease chronic traumatic encephalopathy.
For every year of exposure to the sport, footballers had a 30 per cent increased chance of having the disease.
Spinal cord patients see improvement in motor functions in new trial
Intravenous injection of bone marrow derived stem cells (MSCs) in patients with spinal cord injuries led to significant improvement in motor functions, new research has found.
For more than half of the patients, substantial improvements in key functions — such as ability to walk, or to use their hands — were observed within weeks of stem cell injection, the study from Yale University reports.
No substantial side effects were observed, they added.
The patients had sustained non-penetrating spinal cord injuries, in many cases from falls or minor trauma, several weeks prior to implantation of the stem cells.
Their symptoms involved loss of motor function and co-ordination, sensory loss, as well as bowel and bladder dysfunction.
The stem cells were prepared from the patients’ own bone marrow, via a culture protocol that took several weeks in a specialised cell processing centre.
The cells were injected intravenously in this series, with each patient serving as their own control. Results were not blinded and there were no placebo controls.
Yale scientists Jeffery D. Kocsis, professor of neurology and neuroscience, and Stephen G. Waxman, professor of neurology, neuroscience and pharmacology, were senior authors of the study, which was carried out with investigators at Sapporo Medical University in Japan.
Key investigators of the Sapporo team, Osamu Honmou and Masanori Sasaki, both hold adjunct professor positions in neurology at Yale.
Professor Kocsis and Professor Waxman stress that additional studies will be needed to confirm the results of this preliminary, unblinded trial.
They also stress that this could take years, but despite the challenges, remain optimistic.
“Similar results with stem cells in patients with stroke increases our confidence that this approach may be clinically useful,” notes Professor Kocsis.
“This clinical study is the culmination of extensive preclinical laboratory work using MSCs between Yale and Sapporo colleagues over many years.”
“The idea that we may be able to restore function after injury to the brain and spinal cord using the patient’s own stem cells has intrigued us for years,” adds Professor Waxman.
“Now we have a hint, in humans, that it may be possible.”
Family hail ‘amazing’ care at neurorehab centre
A family whose beloved husband and father had a stroke are fundraising for the neurological centre where he currently resident, after being impressed by the “amazing” standards of care.
Fraser Millar needed life-saving brain surgery in November last year and is now in Woodlands Neurological Care Centre in York, receiving intensive rehabilitation to aid his recovery.
Woodlands, a level two neurorehabilitation centre which is part of Active Care Group, specialises in maximising recovery and independence and sets patients rehabilitation goals that promote re-enablement and enhance quality of life.
Now, Fraser’s family – wife Debs and children Alex and Ryan – are fundraising on behalf of Woodlands, to purchase therapy equipment which will benefit people who are undergoing rehabilitation at the centre.
To remember the long walks Fraser and Debs used to enjoy so much, Debs and daughter Alex are walking the equivalent 230 mile distance from York to Perth in Scotland, where Fraser is from.
Having set a target of £500, the total now stands at over ten times that amount, with over £5,680 being raised at the time of writing.
Family, friends and work colleague donations have come from as far afield as Canada and Australia, from people inspired by the Millar family’s story, which has been widely shared on social media and is touchingly accompanied by the hashtag #comeondad.
“We feel the team at Woodlands have become extended members of our family, they’ve been amazing,” says Alex.
“One of dad’s hobbies is cooking, he’s an amazing chef and loves to watch cookery programmes on TV in the kitchen at home. Woodlands staff noted this on his arrival day and within 20 minutes dad was watching The Hairy Bikers in his room and he continues to watch various culinary programmes!
“Staff there make a huge effort to make dad comfortable, take great care of his needs and interact with us brilliantly, we’re so thankful and extremely happy he’s having the best care.
“We’re raising money to say a huge thank you and while we’re doing it for dad, it’s great that it will benefit other patients too.”
Debs and Alex initially set a target of completing their walk by March 7, which is Debs’ birthday, but typical of their determination, they had already finished by February 24. Their fundraising target has also been vastly exceeded, with donations continuing to come in by the day.
“We initially thought our family and close friends would help with our fundraising cause, but the charity page was quickly circulated and within hours are target was met and the figure kept rising, we couldn’t believe it! We are incredibly thankful for every donation,” says Alex.
“We feel so touched and overwhelmed to have had such amazing support for dad. We walked the long miles but the generous donations kept us going and without them we wouldn’t be in the position to present Woodlands with the equipment they deserve.”
To add support to the Millar family’s fundraising on behalf of Woodlands Neurological Care Centre, visit https://www.gofundme.com/f/woodlands-neurological-rehabilitation-centre
Could sesame seeds help protect against Parkinson’s?
A chemical commonly found in discarded waste from the sesame seed oil manufacturing process could have protective effects against Parkinson’s disease, new groundbreaking research has found.
Sesaminol, abundant in the empty shells of sesame seeds which are discarded after the fatty oils are extracted, could have a role to play in protecting against neuron damage in the brain, researchers from Osaka City University have revealed.
“Currently there is no preventive medicine for Parkinson’s disease, we only have coping treatments,” says OCU Associate Professor Akiko Kojima-Yuasa.
Professor Kojima-Yuasa led her research group through a series of experiments to understand the effects of sesaminol on in vitro and in vivo Parkinson’s disease models.
Parkinson’s disease is caused when certain neurons in the brain involved with movement break down or die due in part to a situation called oxidative stress – neurons in the brain come under extreme pressure from an imbalance between antioxidants and reactive oxygen species (ROS).
The team found in cell-based in vitro experiments that sesaminol protected against neuronal damage by promoting the translocation of Nrf2, a protein involved in the response to oxidative stress, and by reducing the production of intracellular ROS.
In vivo experiments brought Professor Kojima-Yuasa’s team what the University have hailed as equally promising results.
The impairment of movement due to Parkinson’s disease is the result of damaged neurons producing less dopamine than is naturally needed.
The team showed that mice with Parkinson’s disease models show this lack of dopamine production. However, after feeding the mice a diet containing sesaminol for 36 days, the research team saw an increase in dopamine levels.
Alongside this, a rotarod performance test revealed a significant increase in motor performance and intestinal motor function.
With the first-ever medicine for Parkinson’s disease potentially being the naturally occurring food ingredient sesaminol, and this ingredient being found in the naturally occurring waste of the sesame seed industry, Professor Kojima-Yuasa and her team are ready to take their work to the clinical trial phase and connect the consumption/production chain in a way that, as she puts it, “prevents diseases with natural foods to greatly promote societal health.”
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