新型快速检验报告抗生素耐受只需两小时
|
By LabMedica International staff writers Posted on 18 Apr 2018 |
|
芯片实验室系统与拉曼谱配合使用，鉴定抗生素耐受性（图片蒙莱布尼兹光子技术研究所惠赐）。
耐药细菌正在全世界蔓延，必须快速进行抗生素敏感性试验，确定最小抑菌浓度(MIC)，以便及时选择恰当的抗生素疗法。
抗生物的使用日渐泛滥，且经常不必要，导致病原体产生耐药性，本应很容易治愈的感染也许会致命。一种新型的快速检验将得知哪些现有的抗生素仍有效，更快的诊断可实现个性化疗法，挽救生命。
德国耶拿大学医院的科学家及其同事开发了一种简单快速的拉曼谱检查，以鉴定对抗生素的敏感性，短短两小时就可完成总体分析，确定MIC，比今天诊断所用的成熟的表现型方法节省大量时间。
样品制备也比现行的成熟检验更快、更容易。介电泳芯片可自动收集微米见方的细菌，直接用细菌悬浮液测得高质量拉曼谱。用13份大肠杆菌临床分离物确证新型拉曼谱MIC检验，这些分离物来自血流感染患者，表现出对环丙沙星不同程度的耐受性。
微拉曼谱能够检测与环丙沙星相互作用90分钟后大肠杆菌的变化。进行主分量分析并简单计算1458和1485 cm–1处拉曼标志带的比率，结果显示出清晰的浓度依赖效应。新型拉曼谱方法确定的MIC值与微量肉汤稀释法、Vitek-2和法国生物梅里埃公司的E-test等参考方法得到的MIC值吻合得很好，可用于区分是敏感、中等还是耐受。
该研究的论文发表于2018年2月号的《分析化学》(Analytical Chemistry)杂志。资深作者、物理化学教授Ute Neugebauer博士说：“我们联用基于光的分析方法与微流控样本处理。我们的芯片实验室系统是一个微型实验室，有了它，我们就能明确鉴定菌株及其耐药性，需时不到三小时。”
耶拿大学医院>>> www.uni-jena.de
生物梅里埃>>> www.biomerieux.com
Platinum Member
COVID-19 Rapid Test
OSOM COVID-19 Antigen Rapid Test
POCT Fluorescent Immunoassay Analyzer
FIA Go
Gold Member
ADAMTS-13 Protease Activity Test
ATS-13 Activity Assay
Latest 实验室技术 News
Channels
Clinical Chemistry
view channel
3D Printed Point-Of-Care Mass Spectrometer Outperforms State-Of-The-Art Models
Mass spectrometry is a precise technique for identifying the chemical components of a sample and has significant potential for monitoring chronic illness health states, such as measuring hormone levels... Read more.jpg "Image: Reaching speeds up to 6,000 RPM, this centrifuge forms the basis for a new type of inexpensive, POC biomedical test (Photo courtesy of Duke University)")
POC Biomedical Test Spins Water Droplet Using Sound Waves for Cancer Detection
Exosomes, tiny cellular bioparticles carrying a specific set of proteins, lipids, and genetic materials, play a crucial role in cell communication and hold promise for non-invasive diagnostics.... Read more
Highly Reliable Cell-Based Assay Enables Accurate Diagnosis of Endocrine Diseases
The conventional methods for measuring free cortisol, the body's stress hormone, from blood or saliva are quite demanding and require sample processing. The most common method, therefore, involves collecting... Read more
Molecular Diagnostics
view channel
Urine Test to Revolutionize Lyme Disease Testing
Lyme disease is the most common animal-to-human transmitted disease in the United States, with around 476,000 people diagnosed and treated annually, and its incidence has been increasing.... Read more
Simple Blood Test Could Enable First Quantitative Assessments for Future Cerebrovascular Disease
Cerebral small vessel disease is a common cause of stroke and cognitive decline, particularly in the elderly. Presently, assessing the risk for cerebral vascular diseases involves using a mix of diagnostic... Read more
New Genetic Testing Procedure Combined With Ultrasound Detects High Cardiovascular Risk
A key interest area in cardiovascular research today is the impact of clonal hematopoiesis on cardiovascular diseases. Clonal hematopoiesis results from mutations in hematopoietic stem cells and may lead... Read more
Hematology
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
Diagnostic Blood Test for Cellular Rejection after Organ Transplant Could Replace Surgical Biopsies
Transplanted organs constantly face the risk of being rejected by the recipient's immune system which differentiates self from non-self using T cells and B cells. T cells are commonly associated with acute... Read more
AI Tool Precisely Matches Cancer Drugs to Patients Using Information from Each Tumor Cell
Current strategies for matching cancer patients with specific treatments often depend on bulk sequencing of tumor DNA and RNA, which provides an average profile from all cells within a tumor sample.... Read more
Genetic Testing Combined With Personalized Drug Screening On Tumor Samples to Revolutionize Cancer Treatment
Cancer treatment typically adheres to a standard of care—established, statistically validated regimens that are effective for the majority of patients. However, the disease’s inherent variability means... Read more
Microbiology
view channel
Enhanced Rapid Syndromic Molecular Diagnostic Solution Detects Broad Range of Infectious Diseases
GenMark Diagnostics (Carlsbad, CA, USA), a member of the Roche Group (Basel, Switzerland), has rebranded its ePlex® system as the cobas eplex system. This rebranding under the globally renowned cobas name... Read more
Clinical Decision Support Software a Game-Changer in Antimicrobial Resistance Battle
Antimicrobial resistance (AMR) is a serious global public health concern that claims millions of lives every year. It primarily results from the inappropriate and excessive use of antibiotics, which reduces... Read more
New CE-Marked Hepatitis Assays to Help Diagnose Infections Earlier
According to the World Health Organization (WHO), an estimated 354 million individuals globally are afflicted with chronic hepatitis B or C. These viruses are the leading causes of liver cirrhosis, liver... Read more
1 Hour, Direct-From-Blood Multiplex PCR Test Identifies 95% of Sepsis-Causing Pathogens
Sepsis contributes to one in every three hospital deaths in the US, and globally, septic shock carries a mortality rate of 30-40%. Diagnosing sepsis early is challenging due to its non-specific symptoms... Read morePathology
view channel
Robotic Blood Drawing Device to Revolutionize Sample Collection for Diagnostic Testing
Blood drawing is performed billions of times each year worldwide, playing a critical role in diagnostic procedures. Despite its importance, clinical laboratories are dealing with significant staff shortages,... Read more.jpg "Image: The Aperio GT 450 DX has received US FDA 510(k) clearance (Photo courtesy of Leica Biosystems)")
Use of DICOM Images for Pathology Diagnostics Marks Significant Step towards Standardization
Digital pathology is rapidly becoming a key aspect of modern healthcare, transforming the practice of pathology as laboratories worldwide adopt this advanced technology. Digital pathology systems allow... Read more
First of Its Kind Universal Tool to Revolutionize Sample Collection for Diagnostic Tests
The COVID pandemic has dramatically reshaped the perception of diagnostics. Post the pandemic, a groundbreaking device that combines sample collection and processing into a single, easy-to-use disposable... Read more
Technology
view channel
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
DNA Biosensor Enables Early Diagnosis of Cervical Cancer
Molybdenum disulfide (MoS2), recognized for its potential to form two-dimensional nanosheets like graphene, is a material that's increasingly catching the eye of the scientific community.... Read more
Self-Heating Microfluidic Devices Can Detect Diseases in Tiny Blood or Fluid Samples
Microfluidics, which are miniature devices that control the flow of liquids and facilitate chemical reactions, play a key role in disease detection from small samples of blood or other fluids.... Read more
Breakthrough in Diagnostic Technology Could Make On-The-Spot Testing Widely Accessible
Home testing gained significant importance during the COVID-19 pandemic, yet the availability of rapid tests is limited, and most of them can only drive one liquid across the strip, leading to continued... Read moreIndustry
view channel_1.jpg "Image: Thermo Fisher will distribute Bio-Techne products across Europe (Photo courtesy of 123RF)")
Thermo Fisher and Bio-Techne Enter Into Strategic Distribution Agreement for Europe
Thermo Fisher Scientific (Waltham, MA USA) has entered into a strategic distribution agreement with Bio-Techne Corporation (Minneapolis, MN, USA), resulting in a significant collaboration between two industry... Read more
ECCMID Congress Name Changes to ESCMID Global
Over the last few years, the European Society of Clinical Microbiology and Infectious Diseases (ESCMID, Basel, Switzerland) has evolved remarkably. The society is now stronger and broader than ever before... Read more
