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Archive for category: E-News

E-News

BD and the College of American Pathologists announce strategic alliance to support laboratory quality and performance in India and China

, 26 August 2020/in E-News /by 3wmedia

BD Diagnostics and the College of American Pathologists (CAP) have announced the launch of a new strategic alliance that will provide solutions to advance laboratory quality for improved patient outcomes in China and India. BD and CAP announced the collaboration during the American Association for Clinical Chemistry (AACC) Annual Meeting in Houston, Texas.

Laboratories play a critical role in the diagnosis and treatment of disease for the more than 2.5 billion people who live in China and India. The BD/CAP Strategic Alliance will improve access to external quality assurance/proficiency testing (PT) that can have a direct and positive impact on laboratory quality, and therefore, patient outcomes. Together BD and CAP will provide education to improve awareness of global practice standards and training that will help laboratories achieve their quality improvement goals. Additionally, BD will manage PT distribution, including sales, shipping, and first-line client service.

“The clinical laboratory and pathology contribute more than 70 percent of the information used to determine diagnoses and drive treatment decisions,” said CAP President Stanley J. Robboy, MD, FCAP. “CAP has all of the tools necessary to help laboratories improve and monitor efforts that drive quality performance. This strategic alliance with BD will increase access to these essential resources, helping laboratories accelerate their quality improvement journey so that they can contribute to better quality care, differentiate themselves and their institutions, and be recognized globally among the best providers of laboratory and pathology services.”

CAP’s Laboratory Accreditation, Surveys, PT programmes, and other quality management resources combined with BD’s in-depth clinical knowledge of preanalytical systems provide a comprehensive, expert-based toolkit to help laboratories in China and India continuously improve the quality of the testing services they provide to patients. Through participation in CAP accreditation, laboratories in China and India can demonstrate their compliance to the most robust and comprehensive clinical laboratory testing standards in the world.
Having operated in China since 1994 and in India since 1996 supporting public and private sector partners in enhancing laboratory standards, BD has extensive experience in deploying clinical expertise and educational resources in these regions, as well as a deep understanding of the unique needs of laboratories throughout these countries. Today in China, there are 18 CAP-accredited laboratories and nearly 100 laboratories participating in PT. In India, of the 71 laboratories participating in CAP PT, 42 have achieved CAP accreditation. BD’s access and logistics experience will support CAP PT importation and ensure more timely delivery and quality, reduce participants’ administrative work, and allow billing in local currency. Market launch of this initiative will begin in China and India in August 2013 with PT distribution initiated in January 2014.

www.bd.com     www.cap.org
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Scientists develop ‘molecular flashlight’ that illuminates brain tumours in mice

, 26 August 2020/in E-News /by 3wmedia

Jennifer Cochran and Matthew Scott have created a bioengineered peptide that has been shown in mice to provide better imaging of a type of brain tumour known as medulloblastoma.
In a breakthrough that could have wide-ranging applications in molecular medicine, Stanford University researchers have created a bioengineered peptide that enables imaging of medulloblastomas, among the most devastating of malignant childhood brain tumours, in lab mice.
The researchers altered the amino acid sequence of a cystine knot peptide — or knottin — derived from the seeds of the squirting cucumber, a plant native to Europe, North Africa and parts of Asia. Peptides are short chains of amino acids that are integral to cellular processes; knottin peptides are notable for their stability and resistance to breakdown.
The team used their invention as a ‘molecular flashlight’ to distinguish tumours from surrounding healthy tissue. After injecting their bioengineered knottin into the bloodstreams of mice with medulloblastomas, the researchers found that the peptide stuck tightly to the tumours and could be detected using a high-sensitivity digital camera.
‘Researchers have been interested in this class of peptides for some time,’ said Jennifer Cochran, PhD, an associate professor of bioengineering and a senior author of the study. ‘They’re extremely stable. For example, you can boil some of these peptides or expose them to harsh chemicals, and they’ll remain intact.’
That makes them potentially valuable in molecular medicine. Knottins could be used to deliver drugs to specific sites in the body or, as Cochran and her colleagues have demonstrated, as a means of illuminating tumours.
For treatment purposes, it’s critical to obtain accurate images of medulloblastomas. In conjunction with chemotherapy and radiation therapy, the tumours are often treated by surgical resection, and it can be difficult to remove them while leaving healthy tissue intact because their margins are often indistinct.
‘With brain tumours, you really need to get the entire tumour and leave as much unaffected tissue as possible,’ Cochran said. ‘These tumours can come back very aggressively if not completely removed, and their location makes cognitive impairment a possibility if healthy tissue is taken.’
The researchers’ molecular flashlight works by recognising a biomarker on human tumours. The bioengineered knottin is conjugated to a near-infrared imaging dye. When injected into the bloodstreams of a strain of mice that develop tumours similar to human medullublastomas, the peptide attaches to the brain tumours’ integrin receptors — sticky molecules that aid in adhesion to other cells.
But while the knottins stuck like glue to tumours, they were rapidly expelled from healthy tissue. ‘So the mouse brain tumors are readily apparent,’ Cochran said. ‘They differentiate beautifully from the surrounding brain tissue.’
The new peptide represents a major advance in tumour-imaging technology, said Melanie Hayden Gephart, MD, neurosurgery chief resident at the Stanford Brain Tumor Center and a lead author of the paper.
‘The most common technique to identify brain tumours relies on preoperative, intravenous injection of a contrast agent, enabling most tumours to be visualised on a magnetic resonance imaging scan,’ Gephart said. These MRI scans are used like in a computer program much like an intraoperative GPS system to locate and resect the tumors.
‘But that has limitations,’ she added. ‘When you’re using the contrast in an MRI scan to define the tumour margins, you’re basically working off a preoperative snapshot. The brain can sometimes shift during an operation, so there’s always the possibility you may not be as precise or accurate as you want to be. The great potential advantage of this new approach would be to illuminate the tumour in real time — you could see it directly under your microscope instead of relying on an image that was taken before surgery.’
Though the team’s research focused on medulloblastomas, Gephart said it’s likely the new knottins could prove useful in addressing other cancers. Stanford University

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Gene offers an athlete’s heart without the exercise

, 26 August 2020/in E-News /by 3wmedia

Researchers at Case Western Reserve University have found that a single gene poses a double threat to disease: Not only does it inhibit the growth and spread of breast tumours, but it also makes hearts healthier.

In 2012, medical school researchers discovered the suppressive effects of the gene HEXIM1 on breast cancer in mouse models. Now they have demonstrated that it also enhances the number and density of blood vessels in the heart – a sure sign of cardiac fitness.

Scientists re-expressed the HEXIM1 gene in the adult mouse heart and found that the hearts grew heavier and larger without exercise. In addition, the animals’ resting heart rates decreased. The lowered heart rate indicates improved efficiency, and is supported by their finding that transgenic hearts are pumping more blood per beat. The team also discovered that untrained transgenic mice ran twice as long as those without any genetic modification.

‘Our promising discovery reveals the potential for HEXIM1 to kill two birds with one stone – potentially circumventing heart disease as well as cancer, the country’s leading causes of death,’ said Monica Montano, PhD, associate professor of pharmacology, member of the Case Comprehensive Cancer Center, who created the mice for the heart and breast cancer research and one of the lead researchers.

Hypertension and subsequent heart failure are characterised by a mismatch between the heart muscles’ need for oxygen and nutrients and blood vessels’ inability to deliver either at the rate required. This deficit leads to an enlarged heart that, in turn, often ultimately weakens and stops. The researchers showed that increasing blood vessel growth through the artificial enhancement of HEXIM1 levels improved overall function – HEXIM1 may be a possible therapeutic target for heart disease.

The study is the sixth from the team of Dr. Montano and Michiko Watanabe, PhD, professor of paediatrics, genetics, and anatomy at Case Western Reserve School of Medicine and director of Pediatric Cardiology Fellowship Research at Rainbow Babies and Children’s Hospital.
‘Our Cleveland-based collaborative research teams revealed that increasing HEXIM1 levels brought normal functioning hearts up to an athletic level, which could perhaps stand up to the physical insults of various cardiovascular diseases,’ Watanabe said.

The results build on the team’s findings last year that showed increased levels of HEXIM1 suppressed the growth of breast cancer tumours. Using a well-known mouse model of breast cancer metastasis, researchers induced the gene’s expression by locally delivering a drug, hexamethylene-bisacetamide using an FDA-approved polymer. The strategy increased local HEXIM1 levels and inhibited the spread of breast cancer. The team is currently making a more potent version of the drug and intends to move to clinical trials within a few years. Case Western Reserve University School of Medicine

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Life Technologies to collaborate with Merck Serono for companion diagnostics development and commercialization

, 26 August 2020/in E-News /by 3wmedia

Life Technologies Corporation has signed an agreement to collaborate with Merck Serono, a division of Merck KGaA, Darmstadt, Germany, for current and future companion diagnostics projects. The current agreement constitutes the first collaboration between the two companies and represents another step in Life Technologies’ strategy to develop its diagnostic business through internal development, collaborations and select acquisitions. The non-exclusive agreement covers an initial project for oncology and provides for a long-term collaboration across a potentially broad range of instrument platforms and a wide range of therapeutic areas. Financial terms of the agreement were not disclosed. “With our recent acquisition of Compendia Bioscience, we possess bioinformatics solutions and cancer biomarker expertise to collaborate with pharma on each phase of the drug development process, from biomarker hypothesis to assay development concurrently with drugs to approved diagnostic tests”, said Ronnie Andrews, President, Genetic & Medical Sciences at Life Technologies. The collaboration will seek to combine the biomarkers identified by Merck’s translational research with Life Technologies’ proprietary platform technologies and to develop companion diagnostics concurrently with Merck’s drug development programs. The collaboration will also work to simultaneously seek regulatory approval of Merck’s drug and Life Technologies’ companion diagnostic. Life Technologies offers a variety of platform technologies that span both genetic and proteomic analysis, including next-generation sequencing, Sanger sequencing, qPCR and flow cytometry, some of which have already received clearance by the Food and Drug Administration (FDA). If successful, the agreement will be followed by a commercialization agreement under which Life Technologies will commercialize the companion diagnostic in agreed upon territories. According to FDA, a companion diagnostic is an in vitro diagnostic device that provides information that is essential for the safe and effective use of a corresponding therapy. In 2011, the FDA released draft guidance addressing the use of companion diagnostics in clinical development and the review and approval process for diagnostics and associated new therapies. In addition the European Medicines Agency (EMA) has recently announced it is updating the guideline on evaluation of anticancer medicines to include companion diagnostics.

www.lifetech.com
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A new approach to early diagnosis of influenza

, 26 August 2020/in E-News /by 3wmedia

A new technology is showing promise as the basis for a much-needed home test to diagnose influenza quickly, before the window for taking antiviral drugs slams shut and sick people spread the virus to others, scientists reported here today. In a presentation at the 246th National Meeting & Exposition of the American Chemical Society (ACS), they described how it also could determine the specific strain of flu virus and help select the most effective drug for treatment.
Suri Iyer, Ph.D., explained that such a fast, inexpensive diagnostic test — similar to the quick throat swabs for strep throat and to home pregnancy tests — is especially important for flu, which causes widespread illness and an average of 36,000 deaths annually in the United States alone.

‘Just going to the doctor’s office or hospital for diagnosis can be counterproductive during a major flu outbreak,’ Iyer explained. ‘It carries the risk of spreading the disease. During the last swine flu outbreak, hospitals in some areas went on TV to tell people not come to the ER. Not only could they spread the virus, but ERs did not have the facilities to test hundreds of worried people.’

Such a test also is important because antiviral drugs can ease symptoms of the disease and enable people to recover sooner and return to school, work and other activities, Iyer added. But to be most effective, the medications must be taken within two days after symptoms first appear.

Iyer, of Georgia State University in Atlanta, and University of Cincinnati colleague Allison Weiss, Ph.D., launched research on a fundamentally new approach for diagnosing flu and other viral disease because of drawbacks with existing tests. Those tests can produce results in about 15 minutes. However, they are expensive and sometimes come up negative when the patient actually does have the flu. As a result of that uncertainty, the U.S. Centers for Disease Control and Prevention encourages doctors to confirm test results with viral culture, which takes 3 to 10 days. But waiting this long for confirmation shuts the window on antiviral treatment.

Existing flu tests use antibodies that recognise flu virus antigens, proteins on the flu virus’ surface. Iyer and Weiss took a different approach, which involves using carbohydrates to detect the antigens, and has advantages over antibody-based approaches. Flu viruses have two major antigens, haemagglutinin and neuraminidase, which determine the specific strain of flu virus. Changes in haemagglutinin and/or new combinations of haemagglutinin and neuraminidase signal the emergence of a new strain of virus. That happened in the spring of 2009, when the new ‘swine flu’ ignited concerns about a worldwide epidemic.

In the ACS presentation, Iyer explained how the new test technology uses various forms of carbohydrates that can capture the haemagglutinin and neuraminidase, and via a colour change or other signal, indicate both infection and the specific type or strain of flu virus. Information on the strain would be important, enabling doctors to pick the most effective antiviral drug. The new approach has other potential advantages, including quicker results, lower cost and greater reliability, he said.

So far, the approach is living up to expectations, with laboratory experiments verifying that it can detect flu viruses. Iyer and Weiss plan to move ahead in the autumn with tests on samples taken from human volunteers. Their vision is for a package similar to a strep throat or pregnancy test that gives an easy-to-read colour change. American Chemical Society

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Faster, simpler diagnosis for fibromyalgia may be on the horizon

, 26 August 2020/in E-News /by 3wmedia

Researchers have developed a reliable way to use a finger-stick blood sample to detect fibromyalgia syndrome, a complicated pain disorder that often is difficult to diagnose.
If it were someday made available to primary care physicians, the test could knock up to five years off of the wait for a diagnosis, researchers predict.
In a pilot study, the scientists used a high-powered and specialized microscope to detect the presence of small molecules in blood-spot samples from patients known to have fibromyalgia.
By ‘training’ the equipment to recognise that molecular pattern, the researchers then showed that the microscope could tell the difference between fibromyalgia and two types of arthritis that share some of the same symptoms.
Though more analysis is needed to identify exactly which molecules are related to development of the disorder itself, the researchers say their pilot data are promising.
‘We’ve got really good evidence of a test that could be an important aid in the diagnosis of fibromyalgia patients,’ said Tony Buffington, professor of veterinary clinical sciences at The Ohio State University and senior author of the study. ‘We would like this to lead to an objective test for primary care doctors to use, which could produce a diagnosis as much as five years before it usually occurs.’
Patients with fibromyalgia are often desperate by the time they receive treatment because of the lengthy process required to make a diagnosis. The main symptoms, persistent pain and fatigue, mimic many other conditions, so physicians tend to rule out other potential causes before diagnosing fibromyalgia. Additional symptoms include disrupted sleep and memory or thought problems. An estimated 5 million American adults have the disorder, according to the National Institute of Arthritis and Musculoskeletal and Skin Diseases.
‘The importance of producing a faster diagnosis cannot be overstated, because patients experience tremendous stress during the diagnostic process. Just getting the diagnosis actually makes patients feel better and lowers costs because of reductions in anxiety,’ said Kevin Hackshaw, associate professor of medicine, division of rheumatology and immunology, at Ohio State’s Wexner Medical Center and lead author of the study.
The technology used in this work is infrared microspectroscopy, which identifies the biochemical content of a blood sample based on where peaks of molecules appear in the infrared spectrum. The technology offers hints at the molecules present in the samples based on how molecular bonds vibrate when they are struck by light.
The spectroscopy works on dried blood, so just a few drops from a finger stick produce enough blood to run this test.
Researchers first obtained blood samples from patients diagnosed with fibromyalgia (14), rheumatoid arthritis (15) and osteoarthritis (12). These other conditions were chosen for comparison because they produce similar symptoms as fibromyalgia, but are easier to diagnose.
The scientists analysed each sample with the infrared microspectroscopy to identify the molecular patterns associated with each disease. This functioned as a ‘training’ phase of the study.
When the researchers then entered blinded blood samples into the same machinery, each condition was accurately identified based on its molecular patterns.
‘It separated them completely, with no misclassifications,’ Buffington said. ‘That’s very important. It never mistook a patient with fibromyalgia for a patient with arthritis. Clearly we need more numbers, but this showed the technique is quite effective.’
The researchers also analyzed some of the potential chemicals that could someday function as biomarkers in the fibromyalgia blood samples, but further studies are needed to identify the molecules responsible for the spectral patterns, he said. EurekAlert

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Nearly one-third of children with autism also have ADHD

, 26 August 2020/in E-News /by 3wmedia

In a study of the co-occurrence of attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) in early school-age children (four to eight years old), researchers at the Kennedy Krieger Institute found that nearly one-third of children with ASD also have clinically significant ADHD symptoms. The study also found that children with both ASD and ADHD are significantly more impaired on measures of cognitive, social and adaptive functioning compared to children with ASD only.

Distinct from existing research, the current study offers novel insights because most of the children entered the study as infants or toddlers, well before ADHD is typically diagnosed. Previous studies on the co-occurrence of ASD and ADHD are based on patients seeking care from clinics, making them biased towards having more multi-faceted or severe impairments. By recruiting patients as infants or toddlers, the likelihood of bias in the current study is significantly reduced.

‘We are increasingly seeing that these two disorders co-occur and a greater understanding of how they relate to each other could ultimately improve outcomes and quality of life for this subset of children,’ says Dr. Rebecca Landa, senior study author and director of the Center for Autism and Related Disorders at Kennedy Krieger. ‘The recent change to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) to remove the prohibition of a dual diagnosis of autism and ADHD is an important step forward.’

Participants in this prospective, longitudinal child development study included 162 children. Researchers divided the children into ASD and Non-ASD groups. The groups were further categorized by ADHD classification according to parent-reported symptoms of ADHD on the Hyperactivity and Attention Problems subscales of the Behavioral Assessment System for Children-Second Edition, a standard assessment specifically designed to identify the core symptoms of ADHD.

Results revealed that, out of 63 children with ASD in the study, 18 (29%) were rated by their parents as having clinically significant symptoms of ADHD. Importantly, the age range for children in the study (four to eight) represented a younger and narrower sample than has been previously reported in published literature. ‘We focused on young school-aged children because the earlier we can identify this subset of children, the earlier we can design specialized interventions,’ says Dr. Landa. ‘Tailored interventions may improve their outcomes, which tend to be significantly worse than those of peers with autism only.’

Researchers also found that early school-age children with co-occurrence of ASD and ADHD were significantly more impaired than children with only ASD on measures of cognitive and social functioning, as well as in the ability to function in everyday situations. They were also more likely to have significant cognitive delays (61 versus 25 percent) and display more severe autism mannerisms, like stereotypic and repetitive behaviours. The study findings suggest that children with the combined presence of ADHD and ASD may need different treatment methods or intensities than those with ASD only in order to achieve better outcomes.

Dr. Landa and her team recognise that this research supports the need for future prospective, longitudinal studies of attention, social, communication and cognitive functioning from the time that the first red flags of ASD are identified. Such research will lead to important insights about the relative timing of onset and stability of disruption to attention mechanisms and barriers to successful functioning in children with co-occurring ASD and ADHD. Kennedy Krieger Institute

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Researchers identify likely causes, treatment strategies for systemic scleroderma

, 26 August 2020/in E-News /by 3wmedia

Using mice, lab-grown cells and clues from a related disorder, Johns Hopkins researchers have greatly increased understanding of the causes of systemic sclerosis, showing that a critical culprit is a defect in the way certain cells communicate with their structural scaffolding. They say the new insights point the way toward potentially developing drugs for the disease, which affects approximately 100,000 people in the United States.
‘Until now we’ve had little insight and no effective treatment strategies for systemic sclerosis, and many patients die within a year of diagnosis,’ says Hal Dietz, M.D., the Victor A. McKusick Professor of Genetics and Medicine in the Institute of Genetic Medicine, director of the Smilow Center for Marfan Syndrome Research at Johns Hopkins and Howard Hughes Medical Investigator. ‘Our group created mouse models that allowed us to learn about the sequence of events that leads to the disease’s symptoms, and we hope drugs can be developed that target one or more of these events.’
Patients with systemic sclerosis, also known as systemic scleroderma, experience a sudden hardening, or fibrosis, of the skin. For some patients, this hardening occurs only in limited areas, but for others, it quickly spreads across the body and to organs such as the heart, intestines and kidneys. It is this fibrosis of the internal organs that is often fatal.
Systemic sclerosis rarely runs in families, Dietz says, making the gene for the disease, if it exists, very difficult to find. Without a known genetic mutation, researchers had not been able to create a genetically altered mouse with which to study the condition. But Dietz’s group was struck by the similarities between systemic sclerosis and a less severe, much rarer condition called stiff skin syndrome (SSS), which does run in families, and they suspected that learning more about SSS would also shed light on systemic sclerosis.
In a previous experiment, they pinpointed the genetic mutation responsible for SSS in a gene for a protein called fibrillin-1, which plays a role in other connective tissue disorders. In certain types of tissues, including skin, fibrillin-1 helps make up the scaffolding for cells. The specific changes in fibrillin-1 seen in SSS patients were predicted to impair the ability of cells to make contact with fibrillin-1 through bridging molecules called integrins.
In the current study, M.D./Ph.D. student Elizabeth Gerber created a line of mice with a genetic variant similar to that found in SSS patients. To test the group’s hypothesis, Gerber also created a line of mice with a variant the team knew would prevent fibrillin-1 from interacting with integrin. As the team expected, both groups of mice developed patches of stiff skin, along with elevated levels of proteins and cells involved in the immune response—much like humans with SSS or systemic sclerosis. ‘It seemed we were right that the SSS mutation causes the condition by blocking fibrillin’s interaction with integrin,’ Dietz says. ‘Something else we found was that both types of mice had high levels of integrin in their skin, which made us think their cells were trying to compensate for the lack of fibrillin-integrin interaction by making more and more integrin.’
This still left open the question of what was ultimately causing fibrosis, however: Was it the integrin levels or the immune response? Dietz’s group delved deeper into the question by creating mice that had both the SSS mutation and artificially low levels of integrin, and found that the mice never developed fibrosis or an abnormal immune response. ‘They looked normal,’ Dietz says.
The team next tried waiting until mice with the SSS mutation had developed fibrosis, then treating them with a compound known to block a key molecule with known connections to both fibrosis and the immune response. This reversed the mice’s skin fibrosis and immunologic abnormalities. The team also tested the compounds on lab-grown human skin cells with systemic sclerosis, with the same results. This raises the possibility that systemic sclerosis patients could eventually be treated with similar compounds in humans, Dietz says. A number of the compounds that proved effective in SSS mice and systemic sclerosis cells are currently being explored by drug companies for the treatment of other conditions, prominently including cancer.
The results raised another big question for the team: Which of the several types of skin cells were responsible for the runaway immune response and fibrosis? They traced the activity to so-called plasmacytoid dendritic cells, or pDCs, a cell type known to either tamp down or ramp up immune response, depending on the circumstances.
‘Dietz’s work gives scleroderma patients hope that we have gained fundamental insights into the process of fibrosis in scleroderma. In particular, I am confident that within a relatively short time, novel therapies can be tested in patients, and I am optimistic that such treatments will have a profound effect,’ says Luke Evnin, Ph.D., chairman of the board of directors of the Scleroderma Research Foundation and a scleroderma patient. John Hopkins Medicine

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Brain inflammation linked to more severe Parkinson’s symptoms

, 26 August 2020/in E-News /by 3wmedia

Reversing inflammation in the fluid surrounding the brain’s cortex may provide a solution to the complex riddle of Parkinson’s, according to researchers who have found a link between pro-inflammatory biomarkers and the severity of symptoms such as fatigue, depression and anxiety in patients with the chronic disease.

Lena Brundin of Michigan State University’s College of Human Medicine was part of a research team that measured inflammatory markers found in cerebrospinal fluid samples of Parkinson’s patients and members of a control group.

‘The degree of neuroinflammation was significantly associated with more severe depression, fatigue, and cognitive impairment even after controlling for factors such as age, gender and disease duration,’ said Brundin, an associate professor in the college and a researcher with the Van Andel Institute.

‘By investigating associations between inflammatory markers and non-motor symptoms we hope to gain further insight into this area, which in turn could lead to new treatment options.’
Inflammation in the brain long has been suspected to be involved in the development of Parkinson’s disease, specifically in non-motor symptoms such as depression, fatigue and cognitive impairment. Recent research suggests inflammation could drive cell death and that developing new drugs that target this inflammation might slow disease progression.

Parkinson´s disease is the second most common degenerative disorder of the central nervous system; the causes of the disease and its development are not yet fully understood.

‘The few previous studies investigating inflammatory markers in the cerebrospinal fluid of Parkinson’s patients have been conducted on comparatively small numbers of subjects, and often without a healthy control group for comparison,’ Brundin said.

In the study, 87 Parkinson’s patients were enrolled between 2008 and 2012. For the control group, 37 individuals were recruited. Participants underwent a general physical exam and routine blood screening. Researchers looked at the following markers: C-reactive protein, interleukin-6, tumor necrosis factor-alpha, eotaxin, interferon gamma-induced protein-10, monocyte chemotactic protein-1 and macrophage inflammatory protein 1-β.

The study was carried out in collaboration with researchers from Lund University in Sweden, Skåne University Hospital in Sweden and the Mayo Clinic College of Medicine in Florida. Michigan State University

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Newly identified bone marrow stem cells reveal markers for ALS

, 26 August 2020/in E-News /by 3wmedia

Genes could give new direction for diagnostics and therapeutics research, says a TAU researcher

Amyotrophic Lateral Sclerosis (ALS) is a devastating motor neuron disease that rapidly atrophies the muscles, leading to complete paralysis. Despite its high profile — established when it afflicted the New York Yankees’ Lou Gehrig — ALS remains a disease that scientists are unable to predict, prevent, or cure.

Although several genetic ALS mutations have been identified, they only apply to a small number of cases. The ongoing challenge is to identify the mechanisms behind the non-genetic form of the disease and draw useful comparisons with the genetic forms.

Now, using samples of stem cells derived from the bone marrow of non-genetic ALS patients, Prof. Miguel Weil of Tel Aviv University’s Laboratory for Neurodegenerative Diseases and Personalized Medicine in the Department of Cell Research and Immunology and his team of researchers have uncovered four different biomarkers that characterise the non-genetic form of the disease. Each sample shows similar biological abnormalities to four specific genes, and further research could reveal additional commonalities. ‘Because these genes and their functions are already known, they give us a specific direction for research into non-genetic ALS diagnostics and therapeutics,’ Prof. Weil says.
To hunt for these biomarkers, Prof. Weil and his colleagues turned to samples of bone marrow collected from ALS patients. Though more difficult to collect than blood, bone marrow’s stem cells are easy to isolate and grow in a consistent manner. In the lab, he used these cells as cellular models for the disease. He ultimately discovered that cells from different ALS patients shared the same abnormal characteristics of four different genes that may act as biomarkers of the disease. And because the characteristics appear in tissues that are related to ALS — including in muscle, brain, and spinal cord tissues in mouse models of genetic ALS — they may well be connected to the degenerative process of the disease in humans, he believes.

Searching for the biological significance of these abnormalities, Prof. Weil put the cells under stress, applying toxins to induce the cells’ defence mechanisms. Healthy cells will try to fight off threats and often prove quite resilient, but ALS cells were found to be overwhelmingly sensitive to stress, with the vast majority choosing to die rather than fight. Because this is such an ingrained response, it can be used as a feature for drug screening for the disease, he adds.
Whether these biomarkers are a cause or consequence of ALS is still unknown. However, this finding remains an important step towards uncovering the mechanisms of the disease. Because these genes have already been identified, it gives scientists a clear direction for future research. In addition, these biomarkers could lead to earlier and more accurate diagnostics. American Friends of Tel Aviv University

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Bio-Rad - Preparing for a Stress-free QC Audit

Latest issue of Clinical laboratory

November 2025

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15 December 2025

WERFEN APPLAUDS SIGNIFICANT PUBLICATION URGING ACTION ON THE RISKS OF UNDETECTED HEMOLYSIS

13 December 2025

Indero validates three-day gene expression method

12 December 2025

Johnson & Johnson acquires Halda Therapeutics for $3.05 billion

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