Blood Biomarkers Help Diagnose Obstructive Sleep Apnea
|
By LabMedica International staff writers Posted on 26 Jun 2018 |
|
Image: The UniCel Dxl 800 Access 2 immunoassay system (Photo courtesy of Beckman Coulter).
The relationship between obstructive sleep apnea (OSA) and blood biomarkers has been assessed and the hypothesis tested that combinations of markers provide a characteristic OSA signature with diagnostic screening value.
Obstructive sleep apnea is a highly prevalent disorder associated with increased risk for cardiovascular disease, diabetes, and other chronic conditions. Unfortunately, up to 90% of individuals with OSA remain without a diagnosis or therapy.
A team of scientists from various institutions working with Stanford Medical School (Palo Alto, CA, USA) consecutively enrolled, in a multicenter prospective study, 264 adult male subjects with clinically suspected OSA. All subjects underwent overnight sleep studies. An asymptomatic control group of 20 individual’s was also studied. The team collected blood samples in EDTA and serum (SST) tubes at the time of study enrollment prior to initiation of therapy, within one day (median) of the sleep study (interquartile range [IQR] 0–3days).
The scientists tested five biomarkers: glycated hemoglobin (HbA1c), high sensitivity C-reactive protein (CRP), interleukin-6 (IL-6), uric acid, and erythropoietin (EPO). These were selected as the most predictive markers from a feasibility study in which 11 biomarkers were assessed. Samples were tested on the following systems: Beckman Coulter AU System (HbA1c, CRP, and uric acid), and Beckman Coulter UniCel Access 2 System (EPO and IL-6).
The scientists reported that the combination of HbA1c+CRP+EPO (area under the curve 0.78) was superior to the Epworth Sleepiness Scale (ESS; 0.53) and STOP-Bang (0.70) questionnaires. In non-obese subjects, the combination of biomarkers (0.75) was superior to body mass index (BMI; 0.61). Sensitivity and specificity results, respectively, were: HbA1c+CRP+EPO (81% and 60%), ESS (78% and 19%), STOP-Bang (75% and 52%), BMI (81% and 56%), and BMI in non-obese patients (81% and 38%). The most significant associations of biomarkers with OSA severity indices were for CRP and HbA1c.
The authors concluded that concurrent elevations of HbA1c, CRP, and EPO levels should generate a high suspicion of OSA and may have utility as an OSA screening tool. Biomarker combinations correlate with OSA severity and, therefore, may assist sleep centers in identifying and triaging higher risk patients for sleep study diagnosis and treatment. The study was published on June 14, 2018, in the journal Nature and Science of Sleep.
Related Links:
Stanford Medical School
 Reagent.jpg)
Obstructive sleep apnea is a highly prevalent disorder associated with increased risk for cardiovascular disease, diabetes, and other chronic conditions. Unfortunately, up to 90% of individuals with OSA remain without a diagnosis or therapy.
A team of scientists from various institutions working with Stanford Medical School (Palo Alto, CA, USA) consecutively enrolled, in a multicenter prospective study, 264 adult male subjects with clinically suspected OSA. All subjects underwent overnight sleep studies. An asymptomatic control group of 20 individual’s was also studied. The team collected blood samples in EDTA and serum (SST) tubes at the time of study enrollment prior to initiation of therapy, within one day (median) of the sleep study (interquartile range [IQR] 0–3days).
The scientists tested five biomarkers: glycated hemoglobin (HbA1c), high sensitivity C-reactive protein (CRP), interleukin-6 (IL-6), uric acid, and erythropoietin (EPO). These were selected as the most predictive markers from a feasibility study in which 11 biomarkers were assessed. Samples were tested on the following systems: Beckman Coulter AU System (HbA1c, CRP, and uric acid), and Beckman Coulter UniCel Access 2 System (EPO and IL-6).
The scientists reported that the combination of HbA1c+CRP+EPO (area under the curve 0.78) was superior to the Epworth Sleepiness Scale (ESS; 0.53) and STOP-Bang (0.70) questionnaires. In non-obese subjects, the combination of biomarkers (0.75) was superior to body mass index (BMI; 0.61). Sensitivity and specificity results, respectively, were: HbA1c+CRP+EPO (81% and 60%), ESS (78% and 19%), STOP-Bang (75% and 52%), BMI (81% and 56%), and BMI in non-obese patients (81% and 38%). The most significant associations of biomarkers with OSA severity indices were for CRP and HbA1c.
The authors concluded that concurrent elevations of HbA1c, CRP, and EPO levels should generate a high suspicion of OSA and may have utility as an OSA screening tool. Biomarker combinations correlate with OSA severity and, therefore, may assist sleep centers in identifying and triaging higher risk patients for sleep study diagnosis and treatment. The study was published on June 14, 2018, in the journal Nature and Science of Sleep.
Related Links:
Stanford Medical School
New
Platinum Member
Flu SARS-CoV-2 Combo Test
OSOM® Flu SARS-CoV-2 Combo Test
Complement 3 (C3) Test
GPP-100 C3 Kit
New
Gold Member
Liquid Ready-To-Use Lp(a) Reagent
Lipoprotein (a) Reagent
Latest Clinical Chem. News
- New ADLM Guidance Provides Expert Recommendations on Clinical Testing For Respiratory Viral Infections
- 3D Printed Point-Of-Care Mass Spectrometer Outperforms State-Of-The-Art Models
- POC Biomedical Test Spins Water Droplet Using Sound Waves for Cancer Detection
- Highly Reliable Cell-Based Assay Enables Accurate Diagnosis of Endocrine Diseases
- New Blood Testing Method Detects Potent Opioids in Under Three Minutes
- Wireless Hepatitis B Test Kit Completes Screening and Data Collection in One Step
- Pain-Free, Low-Cost, Sensitive, Radiation-Free Device Detects Breast Cancer in Urine
- Spit Test Detects Breast Cancer in Five Seconds
- Electrochemical Sensors with Next-Generation Coating Advances Precision Diagnostics at POC
- First-Of-Its-Kind Handheld Device Accurately Detects Fentanyl in Urine within Seconds
- New Fluorescent Sensor Array Lights up Alzheimer’s-Related Proteins for Earlier Detection
- Automated Mass Spectrometry-Based Clinical Analyzer Could Transform Lab Testing
- Highly Sensitive pH Sensor to Aid Detection of Cancers and Vector-Borne Viruses
- Non-Invasive Sensor Monitors Changes in Saliva Compositions to Rapidly Diagnose Diabetes
- Breakthrough Immunoassays to Aid in Risk Assessment of Preeclampsia
- Urine Test for Monitoring Changes in Kidney Health Markers Can Predict New-Onset Heart Failure
Channels
Molecular Diagnostics
view channel
Advanced Liquid Biopsy Technology Detects Cancer Earlier Than Conventional Methods
Liquid biopsy technology has yet to fully deliver on its significant potential. Traditional methods have focused on a narrow range of cancer-associated mutations that are often present in such low quantities... Read more
Blood-Based Test Outperforms Ultrasound in Early Liver Cancer Detection
Patients with liver cirrhosis and chronic hepatitis B are at a higher risk for developing hepatocellular carcinoma (HCC), the most prevalent type of liver cancer. The American Association for the Study... Read more
Four-In-One Molecular Test Detects and Differentiates Among Most Prevalent Respiratory Viruses in 20 Minutes
The U.S. Centers for Disease Control and Prevention (CDC) has reported that respiratory diseases in the United States reached high levels during the recent autumn and winter seasons, with SARS-CoV-2 leading... Read more.jpeg "Image: Screening for prostate cancer with first-line MRI is less cost-effective than first-line PSA testing (Photo courtesy of Adobe Stock)")
First-Line PSA Testing More Cost-Effective Than First-Line MRI for Prostate Cancer Screening
Current prostate cancer (PCa) screening protocols typically begin with prostate-specific antigen (PSA) testing, which, if elevated, may lead to further assessment using multiparametric magnetic resonance... Read moreHematology
view channel
Next Generation Instrument Screens for Hemoglobin Disorders in Newborns
Hemoglobinopathies, the most widespread inherited conditions globally, affect about 7% of the population as carriers, with 2.7% of newborns being born with these conditions. The spectrum of clinical manifestations... Read more
First 4-in-1 Nucleic Acid Test for Arbovirus Screening to Reduce Risk of Transfusion-Transmitted Infections
Arboviruses represent an emerging global health threat, exacerbated by climate change and increased international travel that is facilitating their spread across new regions. Chikungunya, dengue, West... Read more
POC Finger-Prick Blood Test Determines Risk of Neutropenic Sepsis in Patients Undergoing Chemotherapy
Neutropenia, a decrease in neutrophils (a type of white blood cell crucial for fighting infections), is a frequent side effect of certain cancer treatments. This condition elevates the risk of infections,... Read more
First Affordable and Rapid Test for Beta Thalassemia Demonstrates 99% Diagnostic Accuracy
Hemoglobin disorders rank as some of the most prevalent monogenic diseases globally. Among various hemoglobin disorders, beta thalassemia, a hereditary blood disorder, affects about 1.5% of the world's... Read moreImmunology
view channel.jpg "Image: The AI tool predicts whether someone’s cancer will respond to immune checkpoint inhibitors (Photo courtesy of National Cancer Institute)")
AI Tool Predicts Cancer Patients’ Response to Immunotherapy
Immune checkpoint inhibitors are a form of immunotherapy drug that enables immune cells to target and destroy cancer cells. At present, the Food and Drug Administration has approved two predictive biomarkers... Read more
Molecular Profiling Improves Diagnosis for Children with High Risk Cancers
Cancer remains the leading cause of disease-related death among children in most developed nations, and approximately one-fourth of these patients are diagnosed with aggressive, high-risk, or relapsed... Read more
.jpg "Image: The AI predictive model identifies the most potent cancer killing immune cells for use in immunotherapies (Photo courtesy of Shutterstock)")
Microbiology
view channel
Rapid UTI Test Cuts Detection Time from 3 days to 45 Minutes
Antimicrobial Resistance (AMR), also known as antibiotic resistance or superbugs, is a silent but growing pandemic where bacteria have become resistant to lifesaving antibiotics due to decades of overuse and misuse.... Read more
POC STI Test Shortens Time from ED Arrival to Test Results
In a 2024 sexually transmitted infections (STIs) surveillance report by the World Health Organization (WHO), over 2.5 million cases were recorded, alongside a rise in the inappropriate use of antibiotics... Read more
Integrated Solution Ushers New Era of Automated Tuberculosis Testing
Tuberculosis (TB) is responsible for 1.3 million deaths every year, positioning it as one of the top killers globally due to a single infectious agent. In 2022, around 10.6 million people were diagnosed... Read more
Automated Sepsis Test System Enables Rapid Diagnosis for Patients with Severe Bloodstream Infections
Sepsis affects up to 50 million people globally each year, with bacteraemia, formerly known as blood poisoning, being a major cause. In the United States alone, approximately two million individuals are... Read morePathology
view channel
New Technique Reveals Earliest Signs of Genetic Mutations
Mutations are alterations in the molecular "letters" that constitute the DNA code, which serves as the blueprint for all living cells. While some of these changes may be inconsequential, others can lead... Read more
New WHO Reporting System for Lung Cytopathology to Enhance Diagnostic Accuracy
Lung cancer continues to be the most common cause of cancer-related deaths worldwide and ranks as the second most frequently diagnosed cancer in both men and women. The role of lung cytopathology, which... Read more
Self-Taught AI Tool Diagnoses and Predicts Severity of Common Lung Cancer
A computer program powered by artificial intelligence (AI) and trained on nearly half a million tissue images can effectively diagnose cases of adenocarcinoma, the most prevalent type of lung cancer.... Read more
Novel AI-Powered Method for Tissue Analysis Improves Understanding of Disease Pathology
Scientists at Brown University (Providence, RI, USA) and the University of Michigan (Ann Arbor, MI, USA) have created a groundbreaking computational technique to examine complex tissue data, potentially... Read moreTechnology
view channel
Microneedle Patch Detects Skin Cancer Early
Wearable bioelectronics has emerged as a significant innovation in healthcare, especially in the field of biosensing, providing a new method to monitor individual health for both diagnostic and therapeutic purposes.... Read more
New Diagnostic System Achieves PCR Testing Accuracy
While PCR tests are the gold standard of accuracy for virology testing, they come with limitations such as complexity, the need for skilled lab operators, and longer result times. They also require complex... Read more
Industry
view channel
Roche and Hitachi High-Tech Extend 46-Year Partnership for Breakthroughs in Diagnostic Testing
Roche (Basel, Switzerland) and Hitachi High-Tech (Tokyo, Japan) have renewed their collaboration agreement, committing to a further 10 years of partnership. This extension brings together their long-standing... Read more
Danaher and Johns Hopkins University Collaborate to Improve Neurological Diagnosis
Unlike severe traumatic brain injury (TBI), mild TBI often does not show clear correlations with abnormalities detected through head computed tomography (CT) scans. Consequently, there is a pressing need... Read more
Beckman Coulter and MeMed Expand Host Immune Response Diagnostics Partnership
Beckman Coulter Diagnostics (Brea, CA, USA) and MeMed BV (Haifa, Israel) have expanded their host immune response diagnostics partnership. Beckman Coulter is now an authorized distributor of the MeMed... Read more_1.jpg "Image: Thermo Fisher will distribute Bio-Techne products across Europe (Photo courtesy of 123RF)")
