Medical Immunoassays Articles
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Maternal serum glycosylated fibronectin as a short-term predictor of preeclampsia: a prospective cohort study
Abstract Background: Preeclampsia is a major pregnancy complication that results in significant maternal and infant mortality, most of which occurs in low and middle-income countries. The accurate and timely diagnosis of preeclampsia is critical in management of affected pregnancies to reduce maternal and fetal/neonatal morbidity and mortality, yet difficulties remain in establishing the rigorous ...
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Biotin PEG
What are Biotinylation and Biotinylated PEG?Biotinylation is the process of covalently attaching biotin to molecules (such as amino acids, peptides, antibodies, or proteins). Due to the small molecular weight of biotin, biotinylation is usually rapid and specific and is unlikely to interfere with the inherent function of the molecule. Biotin has extremely high affinity, rapidity and high ...
By BOC Sciences
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Influenza A virus replication has a stronger dependency on Raf/MEK/ERK signaling pathway activity than SARS-CoV-2
The recent COVID-19 pandemic again highlighted the urgent need for broad-spectrum antivirals, both for therapeutic use in acute viral infection and for pandemic preparedness in general. The targeting of host cell factors hijacked by viruses during their replication cycle presents one possible strategy for development of broad-spectrum antivirals. By inhibiting the Raf/MEK/ERK signaling pathway, ...
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Characteristics and Applications of Luminex Multiplex Technology
Luminex multiplex assays is a multi-functional, multi-indicator parallel analysis system that organically integrates color-coded beads, laser technology, applied fluidics, the latest high-speed digital signal processor and computer algorithms to create a high degree of specificity and sensitivity for multi-factor detection. It can be widely used in immunoassay, nucleic acid research, enzymatic ...
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The Role of MMP-3: Insights into Disease Progression and Therapeutic Potential
The MMP Family Matrix metalloproteinases (MMPs) are a family of enzymes belonging to the metzincin superfamily. There are 23 different types of secreted or membrane-anchored endopeptidases in the human body. MMPs are capable of degrading ECM proteins such as collagen, gelatin, laminin, fibronectin, fibrinogen, elastin, and proteoglycans. They were once considered regulators of the extracellular ...
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Clinical Pharmacology of Antibody-Drug Conjugates
Unlike the development of most small or large molecules, which typically measures only one part or the metabolite for pharmacokinetic analysis, multiple parts of ADCs need to be measured to characterize their PK properties. Therefore, a thorough understanding of the clinical pharmacology of ADCs is critical for selecting a safe and effective dose for patients. Biological Analysis of ADC In order ...
By BOC Sciences
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What Are Gold NanoCages?
Gold nanocages refer to the hollow gold nanostructures with porous walls that were developed by Sun and Xia and Chen et al. in the early 2000s. The hollow and porous structures are synthesized by the galvanic replacement between silver nanocubes and chloroauric acid in aqueous solution. By controlling the size of nanocube templates, the monodispersed cubic nanocages are readily obtained with ...
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Spatial profiling of chromatin accessibility in mouse and human tissues
Abstract Cellular function in tissue is dependent on the local environment, requiring new methods for spatial mapping of biomolecules and cells in the tissue context1. The emergence of spatial transcriptomics has enabled genome-scale gene expression mapping2,3,4,5, but the ability to capture spatial epigenetic information of tissue at the cellular level and genome scale is lacking. Here we ...
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Everything You Want to Know About Horseradish Peroxidase
Peroxidase, usually derived from horseradish, is a common enzyme used in clinical testing reagents. It is widely used not only in several biochemical assays but also in immunoassay (ELISA) kits. As a key component of the color development system of several kits, peroxidase has an important impact on the quality of the kits. Horseradish peroxidase (HRP) is the most commonly used enzyme because ...
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Targeting Interleukin-6 Helps to Mitigate the Side Effects of Immunotherapy
Researchers at The University of Texas MD Anderson Cancer Center have identified a new strategy to reduce immune-related adverse events by targeting immunotherapy with the cytokine interleukin-6 (IL-6). The study, published in Cancer Cell, provides evidence for the concept of combining immune checkpoint blockers and cytokine blockers to selectively inhibit inflammatory autoimmune responses. ...
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Gertsen Blinded Validation Project
Summary OTraces in collaboration with the Gertsen Institute in Moscow performed a blinded validation study on OTraces breast cancer detection products, the CDx Chemistry System for processing automated tests for detection of cancer; BC Sera Dx Immunochemistry test kit for the measurements of proteins that are predictive as a group of the presence on breast cancer in women; and the OTraces Cancer ...
By OTraces Inc.
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World Rare Disease Day
On February 29 (or the last day of February) we celebrate World Rare Disease Day to raise awareness about these diseases, aiming to improve access to diagnosis, treatment and medical care. What are these diseases? Rare diseases are those that occur infrequently in the general population. In Argentina, “rare diseases” are those whose prevalence in the general population is equal to ...
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Spatial-CUT&Tag: Spatially resolved chromatin modification profiling at the cellular level
Close-up on chromatin modifications Despite recent advances in spatial transcriptomics to map gene expression, it has not be possible to determine the underlying epigenetic mechanisms controlling gene expression and tissue development with high spatial resolution. Denget al. report on a technique called spatial-CUT&Tag for genome-wide profiling of histone modifications pixel by pixel on ...
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Detailed Introduction to Steroids Analysis
Steroid hormone is a class of compounds that contain cyclopentane polyhydrophenanthrene structure formed by cholesterol and catalyzed by cytochrome P450 enzymes. Steroid hormones mainly include adrenocorticotropic hormones secreted by the adrenal cortex and sex hormones secreted by the gonads, which are mainly divided into four categories: progesterone, corticosteroid, estrogen and androgen. ...
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How NorDx Laboratories includes PCS in focus on quality for over 20 years - Case Study
What started as two local businesses supporting each other has grown into a valuable decade-spanning relationship based on the common goals of reliable patient test results. Increased Quality >20 Years using Artel NorDx has been using Artel technology to ensure pipette quality and compliance since the 1990s. Increased Organization 100s of pipettes across 12 sites NorDx values the PCS to ...
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Production of trimeric SARS-CoV-2 spike protein by CHO cells for serological COVID-19 testing
Soon after the genetic sequence of SARS-CoV-2 was determined in January 2020, there was a rush to develop rapid diagnostics for the disease. The World Health Organization issued early guidance and protocols for the use of PCR to assist in diagnosing the disease. However, drawbacks like long turnaround times and invasive sampling for PCR tests led to a concerted push to develop rapid antibody ...
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HIT Weekly Series Episode 6 - Conclusions
Today, HIT remains a critical clinical context in many hospital settings, when heparin, mainly unfractionated, is used in cardiology, intensive care units, or ECC, including CPB and increasingly ECMO. This is a paradoxal disease, as this anticoagulant drug can provoke thrombocytopenia associated with thrombosis in affected patients. Detecting the risk of HIT is mandatory, as it requires an ...
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Measurement of Heparin Dependent Antibodies with Immunoassays
Immunoassays for heparin dependent antibodies have been introduced since the discovery of PF4 as the major target antigen in presence of heparin. Different immunoassay presentations are available, and interestingly heparin can be replaced by polyanions complexes and its native structure is then altered as shown on figure 3. This alteration exposes PF4 epitopes, characteristic of the ...
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An Inflection Point for Biopharmaceutical Host Cell Protein Analysis
Has LC-MS Become a Generally Accepted Tool for Complementing Immunoassay-based HCP Analysis? My colleague Catalin Doneanu and I just returned from Lisbon, Portugal, where we attended the BEBPA Conference on Host Cell Protein (HCP) analysis. Along with the other 120 attendees, we participated in open and thoughtful discussions on the best practices for HCP analysis using conventional ...
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Biomedical applications of organically modified bioconjugated silica nanoparticles
Nanoparticles are one of the most important prominent areas in the field of nanotechnology, with a broad significant role in current life sciences and human healthcare applications. Among the nanoparticles silica nanoparticles are explored in many biological applications because their size dependent novel properties and functions differ drastically from those of the bulk materials. In biomedical ...
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