Here’s another paradigm-shifting innovation in diagnostic medicine! Researchers at the University of Colorado are using a patient’s breath and lasers to detect cancer and asthma (and possibly additional diseases in the future). The technology measures a patient’s breath by using mirrors to bounce a laser’s light back and forth until it has touched every molecule a patient exhales in a single breath. The laser can detect minute traces of compounds that are present when patients have certain diseases, such as cancer, asthma, and kidney malfunction. The new technique is called cavity-enhanced direct optical frequency comb spectroscopy.
In a similar effort, Menssana Research, Inc., of Newark, New Jersey, has developed a device that collects the human breath, then uses gas chromatography to detect volatile organic chemicals (VOCs). The company says its BCA system can detect breast cancer at comparable level of accuracy as a mammogram. Menssana presented this Breath Collecting Apparatus 5.0 (BCA) last year at the DARPATech 2007 Conference (Defense Advanced Research Projects Agency).
“To date, researchers have identified over 1,000 different compounds contained in human breath,” wrote the research team at the University of Colorado. Some compounds point to abnormal function. Methylamine, for instance, is produced in higher amounts by liver and kidney diseased. Ammonia is produced when the kidneys are failing. Elevated Acetone is caused by diabetes. People with asthma may produce too much nitric oxide. Smokers produce high levels of carbon monoxide.
The research team at the University of Colorado, led by Jun Ye, Ph.D., is not the first to examine breath as a means of disease diagnosis. Last February, a team at the Cleveland Clinic in Ohio reported they could use a mass spectrometer breath test to detect lung cancer in patients. In 2006, researchers found dogs could be trained to smell cancer on the breath of patients with 99% accuracy.
Collectively, these developments demonstrate how laboratory medicine may be moving toward the day when specimen collection no longer means patients having to endure needle sticks and biopsy procedures. Research efforts to develop tests that use saliva, cheek cells, and breath are demonstrating that it is feasible to use these types of specimens to diagnose cancer and a variety of diseases with adequate sensitivity and specificity. However, will the arrival of tests based on these types of non-invasive specimens mean a radical change in the patient service centers used by laboratories to collect specimens from patients? Should these non-invasive specimen collection procedures require a trained collector, then the laboratory’s role in specimen collection and pre-analytical steps is likely to continue without significant changes.
Related Articles: Laser could provide breath test for cancer, asthma
New non-invasive test could replace traditional painful spinal taps and clinical laboratory fluid analysis for diagnosis of Parkinson’s disease
Scientists at AXIM Biotechnologies of San Diego have added another specimen that can be collected non-invasively for rapid, point-of-care clinical laboratory testing. This time it is tears, and the diagnostic test is for Parkinson’s disease (PD).
The new assay measures abnormal alpha-synuclein (a-synuclein), a protein that is a biomarker for Parkinson’s, according to an AXIM news release which also said the test is the first rapid test for PD.
“The revolutionary nature of AXIM’s new test is that it is non-invasive, inexpensive, and it can be performed at a point of care. It does not require a lumbar puncture, freezing, or sending samples to a lab. AXIM’s assay uses a tiny tear drop versus a spinal tap to collect the fluid sample and the test can be run at a doctor’s office with quantitative results delivered from a reader in less than 10 minutes,” the news release notes.
“Furthermore, emerging evidence shows that a-synuclein assays have the potential to differentiate people with PD from healthy controls, enabling the potential for early identification of at-risk groups,” the news release continues. “These findings suggest a crucial role for a-synuclein in therapeutic development, both in identifying pathologically defined subgroups of people with Parkinson’s disease and establishing biomarker-defined at-risk cohorts.”
This is just the latest example of a disease biomarker that can be collected noninvasively. Other such biomarkers Dark Daily has covered include:
“With this new assay, AXIM has immediately become a stakeholder in the Parkinson’s disease community, and through this breakthrough, we are making possible new paradigms for better clinical care, including earlier screening and diagnosis, targeted treatments, and faster, cheaper drug development,” said John Huemoeller, CEO, AXIM (above), in a news release. Patients benefit from non-invasive clinical laboratory testing. (Photo copyright: AXIM Biotechnologies.)
Fast POC Test versus Schirmer Strip
AXIM said it moved forward with its novel a-synuclein test propelled by earlier tear-related research that found “a-synuclein in its aggregated form can be detected in tears,” Inside Precision Medicine reported.
But that research used what AXIM called the “outdated” Schirmer Strip method to collect tears. The technique involves freezing tear samples at -80 degrees Celsius (-112 Fahrenheit), then sending them to a clinical laboratory for centrifugation for 30 minutes; quantifying tear protein content with a bicinchoninic acid assay, and detecting a-synuclein using a plate reader, AXIM explained.
Alternatively, AXIM says its new test may be performed in doctors’ offices and offers “quantitative results delivered from a reader in less than 10 minutes.”
“Our proven expertise in developing tear-based diagnostic tests has led to the development of this test in record speed, and I’m extremely proud of our scientific team for their ability to expand our science to focus on such an important focus area as Parkinson’s,” said John Huemoeller, CEO, AXIM in the news release.
“This is just the beginning for AXIM in this arena,” he added. “But I am convinced when pharmaceutical companies, foundations, and neurologists see how our solution can better help diagnose Parkinson’s disease in such an expedited and affordable way, we will be at the forefront of PD research, enabling both researchers and clinicians a brand-new tool in the fight against PD.”
One of those tests was “a lateral flow diagnostic for point-of-care use that measures the level of lactoferrin proteins in tear fluid, which work to protect the surface of the eye. … Axim said that low lactoferrin levels have also been linked to Parkinson’s disease and that the assay can be used alongside its alpha-synuclein test,” Fierce Biotech noted.
“It made sense to try and look at the proteinaceous [consisting of or containing protein] constituents of tear fluid,” Lew told Neurology Live. “Tear fluid is easy to collect. It’s noninvasive, inexpensive. It’s not like when you do a lumbar puncture, which is a much more involved ordeal. There’s risk of contamination with blood (saliva is dirty) issues with blood and collection. [Tear fluid analysis] is much safer and less expensive to do.”
In Biomarkers in Medicine, Lew et al noted why tears make good biomarkers for Parkinson’s disease, including “the interconnections between the ocular [eye] surface system and neurons affected in Parkinson’s disease.”
The researchers also highlighted “recent data on the identification of tear biomarkers including oligomeric α-synuclein, associated with neuronal degeneration in PD, in tears of PD patients” and discussed “possible sources for its release into tears.”
Future Clinical Laboratory Testing for Parkinson’s
Parkinson’s disease is the second most common neurodegenerative disorder after Alzheimer’s. It affects nearly one million people in the US. About 1.2 million people may have it by 2030, according to the Parkinson’s Foundation.
Thus, an accurate, inexpensive, non-invasive diagnostic test that can be performed at the point of care, and which returns clinical laboratory test results in less than 10 minutes, will be a boon to physicians who treat PD patients worldwide.
Clinical laboratory managers and pathologists may want to follow AXIM’s future research to see when the diagnostic test may become available for clinical use.
Collected data could give healthcare providers and clinical laboratories a practical view of individuals’ oral microbiota and lead to new diagnostic assays
When people hear about microbiome research, they usually think of the study of gut bacteria which Dark Daily has covered extensively. However, this type of research is now expanding to include more microbiomes within the human body, including the oral microbiome—the microbiota living in the human mouth.
One example is coming from Genefitletics, a biotech company based in New Delhi, India. It recently launched ORAHYG, the first and only (they claim) at-home oral microbiome functional activity test available in Asia. The company is targeting the direct-to-consumer (DTC) testing market.
According to the Genefitletics website, the ORAHYG test can decode the root causes of:
“Using oral microbial gene expression sequencing technology and its [machine learning] model, [Genefitletics] recently debuted its oral microbiome gene expression solution, which bridges the gap between dentistry and systemic inflammation,” ETHealthworld reported.
“The molecular insights from this test would give an unprecedented view of functions of the oral microbiome, their interaction with gut microbiome and impact on metabolic, cardiovascular, cognitive, skin, and autoimmune health,” BioSpectrum noted.
“Microbes, the planet Earth’s original inhabitants, have coevolved with humanity, carry out vital biological tasks inside the body, and fundamentally alter how we think about nutrition, medicine, cleanliness, and the environment,” Sushant Kumar (above), founder and CEO of Genefitletics, told the Economic Times. “This has sparked additional research over the past few years into the impact of the trillions of microorganisms that inhabit the human body on our health and diverted tons of funding into the microbiome field.” Clinical laboratories may eventually see an interest and demand for testing of the oral microbiome. (Photo copyright: ETHealthworld.)
Imbalanced Oral Microbiome Can Trigger Disease
The term microbiome refers to the tiny microorganisms that reside on and inside our bodies. A high colonization of these microorganisms—including bacteria, fungi, yeast, viruses, and protozoa—live in our mouths.
“Mouth is the second largest and second most diverse colonized site for microbiome with 770 species comprising 100 billion microbes residing there,” said Sushant Kumar, founder and CEO of Genefitletics, BioSpectrum reported. “Each place inside the mouth right from tongue, throat, saliva, and upper surface of mouth have a distinctive and unique microbiome ecosystem. An imbalanced oral microbiome is said to trigger onset and progression of type 2 diabetes, arthritis, heart diseases, and even dementia.”
The direct-to-consumer ORAHYG test uses a saliva sample taken either by a healthcare professional or an individual at home. That sample is then sequenced through Genefitletics’ gene sequencing platform and the resulting biological data set added to an informatics algorithm.
Genefitletics’ machine-learning platform next converts that information into a pre-symptomatic molecular signature that can predict whether an individual will develop a certain disease. Genefitletics then provides that person with therapeutic and nutritional solutions that can suppress the molecules that are causing the disease.
“The current industrial healthcare system is really a symptom care [system] and adopts a pharmaceutical approach to just make the symptoms more bearable,” Kumar told the Economic Times. “The system cannot decode the root cause to determine what makes people develop diseases.”
Helping People Better Understand their Health
Founded in 2019, Genefitletics was created to pioneer breakthrough discoveries in microbial science to promote better health and increase longevity in humans. The company hopes to unravel the potential of the oral microbiome to help people fend off illness and gain insight into their health.
“Microorganisms … perform critical biological functions inside the body and transform our approach towards nutrition, medicine, hygiene and environment,” Kumar told CNBC. “It is important to understand that an individual does not develop a chronic disease overnight.
“It starts with chronic inflammation which triggers pro-inflammatory molecular indications. Unfortunately, these molecular signatures are completely invisible and cannot be measured using traditional clinical grade tests or diagnostic investigations,” he added. “These molecular signatures occur due to alteration in gene expression of gut, oral, or vaginal microbiome and/or human genome. We have developed algorithms that help us in understanding these alterations way before the clinical symptoms kick in.”
Genefitletics plans to utilize individuals’ collected oral microbiome data to determine their specific nutritional shortcomings, and to develop personalized supplements to help people avoid disease.
The company also produces DTC kits that analyze gut and vaginal microbiomes as well as a test that is used to evaluate an infant’s microbiome.
“The startup wants to develop comparable models to forecast conditions like autism, PCOS [polycystic ovarian syndrome], IBD [Inflammatory bowel disease], Parkinson’s, chronic renal [kidney] disease, anxiety, depression, and obesity,” the Economic Times reported.
Time will tell whether the oral microbiome tests offered by this company prove to be clinically useful. Certainly Genefitletics hopes its ORAHYG test can eventually provide healthcare providers—including clinical laboratory professionals—with a useful view of the oral microbiome. The collected data might also help individuals become aware of pre-symptomatic conditions that make it possible for them to seek confirmation of the disease and early treatment by medical professionals.
Clinical laboratory leaders may be aware that many hospitals still do not have capabilities to make a timely diagnosis of sepsis
Despite the fact that “one in three people who dies in a hospital had sepsis during that hospitalization,” recent data from the Centers for Disease Control and Prevention (CDC) show that many hospitals in the US lack the resources to identify sepsis and begin treatment as soon as possible, CNN reported.
According to the CDC, 1.7 million Americans develop sepsis annually. And of that group, at least 350,000 adults die in hospitals or hospice care centers. Clinical laboratories tasked with performing the plethora of tests needed to diagnose sepsis will agree that it is one of the gravest healthcare dangers patients face.
To address this potentially deadly threat, the CDC developed the “Hospital Sepsis Program Core Elements: 2023” to support the implementation of sepsis protocols at all hospitals, to optimize any existing sepsis programs, and to organize staff and identify resources to lower sepsis rates and raise survivability.
“Modeled after CDC’s Core Elements of Antibiotic Stewardship, which has proven to be an impactful resource to protect patients from the harms caused by unnecessary antibiotic use and to combat antimicrobial resistance, the Sepsis Core Elements were created with the expectation that all hospitals, regardless of size and location, would benefit from this resource,” a CDC press release noted.
“CDC’s Hospital Sepsis Program Core Elements are a guide for structuring sepsis programs that put your healthcare providers in the best position to rapidly identify and provide effective care for all types of patients with sepsis,” said Raymund Dantes, MD (above), Medical Advisor, National Healthcare Safety Network, CDC, and Associate Professor, Emory University School of Medicine, in a CDC press release. Hospital medical laboratories will play a key role in the success of the CDC’s sepsis program. (Photo copyright: Emory School of Medicine.)
Seven Elements to Improve Sepsis Diagnosis
Sepsis can occur when chemicals released into the bloodstream to fight off an infection produce massive inflammation throughout the body. This potentially fatal reaction can cause a deluge of changes within the body that damage multiple organs, leading them to fail.
The CDC designed its hospital sepsis program to improve and monitor the management and outcomes of patients with sepsis. The core elements of the program include seven main points:
Hospital Leadership Commitment: Management must dedicate the necessary staff, financial, and information technology resources.
Accountability: Appoint a team responsible for program goals and outcomes.
Multi-professional Expertise: Make sure key personnel throughout the healthcare system are engaged in the program.
Action: Implement structures and processes to improve the identification of the illness and patient outcomes.
Tracking: Develop initiatives to measure sepsis epidemiology, management, overall outcomes, and progress towards established goals.
Reporting: Provide information on sepsis management and outcomes to relevant partners.
Education: Provide healthcare professionals, patients, and family/caregivers with information on sepsis.
“Sepsis is taking too many lives. One in three people who dies in a hospital has sepsis during that hospitalization. Rapid diagnosis and immediate appropriate treatment, including antibiotics, are essential to saving lives, yet the challenges of awareness about and recognition of sepsis are enormous,” said CDC Director Mandy Cohen, MD, in the CDC press release. “That’s why CDC is calling on all US hospitals to have a sepsis program and raise the bar on sepsis care by incorporating these seven core elements.”
Early Diagnosis Presents Challenges
Sepsis care is complex. The condition requires urgent medical intervention to prevent organ damage and death. But the symptoms, which include fever or low temperature, shivering, confusion, breathing difficulties, extreme body pain or discomfort, high heart rate, weak pulse or low blood pressure, and low urine output, can be general and indicative of other illnesses.
The diagnosis of sepsis usually requires the collection of a blood culture specimen that is then incubated until there is enough bacterial growth to identify the specific strains of bacteria in a particular patient. This process can take several days, which can delay the administering of the most effective treatment for the condition. Treatment usually includes antibiotics and intravenous fluids.
A recent CDC survey of 5,221 US hospitals showed that in 2022, only 73% of hospitals reported having a sepsis program, ranging from 53% among hospitals with less than 25 beds to 95% among hospitals with over 500 beds.
That survey, released in the CDC’s August Morbidity and Mortality Weekly Report (MMWR), also discovered that only 55% of all hospitals had personnel with dedicated time to manage and conduct necessary daily activities for a sepsis program.
Raymund Dantes, MD, Medical Advisor, National Healthcare Safety Network, CDC, and Associate Professor, Emory University School of Medicine, told CNN that as many as 1,400 hospitals have no sepsis program in place at all. Therefore, he added, the CDC’s Hospital Sepsis Program Core Elements documents also include a “getting started guide” to help those hospitals create the needed committees.
“For those hospitals that already have sepsis programs underway and have available resources, we have a lot more details and best practices that we’ve collected from hospitals about how to better improve your sepsis programs,” he said. “The seven elements complement clinical guidelines by describing the leadership, expertise, tracking, education, and other elements that can be implemented in a wide variety of hospitals to improve the quality of sepsis care.”
Hospital Laboratories Play a Key Role in Reducing Sepsis
According to the CDC, anyone can get an infection and almost any infection can lead to sepsis. However, some populations are more vulnerable to sepsis than others. They include:
Older persons
Pregnant or recently pregnant women
Neonates
Hospitalized Patients
Patients in Intensive Care Units
People with weakened immune systems
People with chronic medical conditions
According to the World Health Organization (WHO), there were 48.9 million sepsis cases and 11 million sepsis-related deaths worldwide in 2017. This number accounted for almost 20% of all global deaths. Almost half of all the global sepsis cases occurred in children, resulting in 2.9 million deaths in children under the age of five.
“Sepsis is complex, often difficult to identify, and takes a tremendous societal toll in the United States,” said Steven Simpson, MD, Professor of Medicine at the University of Kansas and Chair, Board of Directors, Sepsis Alliance, a non-profit organization dedicated to raising awareness and reducing suffering from sepsis, in a press release. “To tackle the number one killer in American hospitals, we need a comprehensive National Action Plan to find cures, get them in the hands of professionals, and educate the public and professionals alike.”
Hospital medical laboratories can help reduce sepsis by finding ways to support their physicians’ diagnoses of this infection that has taken so many lives.
Meet ‘PECOTEX,’ a newly-invented cotton thread with up to 10 sensors that is washable. Its developers hope it can help doctors diagnosis disease and enable patients to monitor their health conditions
Wearable biosensors continue to be an exciting area of research and product development. The latest development in wearable biosensors comes from a team of scientists led by Imperial College London. This team created a conductive cotton thread that can be woven onto T-shirts, textiles, and face masks and used to monitor key biosignatures like heart rate, respiratory rate, and ammonia levels.
Clinical laboratory managers and pathologists should also take note that this wearable technology also can be used to diagnose and track diseases and improve the monitoring of sleep, exercise, and stress, according to an Imperial College London news release.
Should this technology make it into daily use, it might be an opportunity for clinical laboratories to collect diagnostic and health-monitoring data to add to the patient’s full record of lab test results. In turn, clinical pathologists could use that data to add value when consulting with referring physicians and their patients.
“Our research opens up exciting possibilities for wearable sensors in everyday clothing,” said Firat Güder, PhD, Principal Investigator and Chief Engineer at Güder Research Group at Imperial College London, in a news release. “By monitoring breathing, heart rate, and gases, they can already be seamlessly integrated, and might even be able to help diagnose and monitor treatments of disease in the future.” (Photo copyright: Wikipedia.)
Ushering in New Generation of Wearable Health Sensors
The researchers dubbed their new sensor thread PECOTEX. It’s a polystyrene sulfonate-modified cotton conductive thread that can incorporate more than 10 sensors into cloth surfaces, costs a mere 15 cents/meter (slightly over 39 inches), and is machine washable.
“PECOTEX is high-performing, strong, and adaptable to different needs,” stated Firat Güder, PhD, Principal Investigator and Chief Engineer at Güder Research Group, Imperial College London, in the press release.
“It’s readily scalable, meaning we can produce large volumes inexpensively using both domestic and industrial computerized embroidery machines,” he added.
The material is less breakable and more conductive than conventional conductive threads, which allows for more layers to be embroidered on top of each other to develop more complex sensors. The embroidered sensors retain the intrinsic values of the cloth items, such as wearability, breathability, and the feel on the skin. PECOTEX is also compatible with computerized embroidery machines used in the textile industry.
The researchers embroidered the sensors into T-shirts to track heart activity, into a face mask to monitor breathing, and into other textiles to monitor gases in the body like ammonia which could help detect issues with liver and kidney function, according to the news release.
“The flexible medium of clothing means our sensors have a wide range of applications,” said Fahad Alshabouna, a PhD candidate at Imperial College’s Department of Bioengineering and lead author of the study in the news release. “They’re also relatively easy to produce which means we could scale up manufacturing and usher in a new generation of wearables in clothing.”
Uses for PECOTEX Outside of Healthcare
The team plans on exploring new applications for PECOTEX, such as energy storage, energy harvesting, and biochemical testing for personalized medicine. They are also seeking partners for commercialization of the product.
“We demonstrated applications in monitoring cardiac activity and breathing, and sensing gases,” Fahad added. “Future potential applications include diagnosing and monitoring disease and treatment, monitoring the body during exercise, sleep, and stress, and use in batteries, heaters, and anti-static clothing.”
Wearable healthcare devices have enormous potential to perform monitoring for diagnostic, therapeutic, and rehabilitation purposes and support precision medicine.
Further studies and clinical trials need to occur before PECOTEX will be ready for mass consumer use. Nevertheless, it could lead to new categories of inexpensive, wearable sensors that can be integrated into everyday clothes to provide data about an individual’s health and wellbeing.
If this technology makes it to clinical use, it could provide an opportunity for clinical laboratories to collect diagnostic data for patient records and help healthcare professionals track their patients’ medical conditions.
