Human Serum
Human Serum - Related Videos
06:44
Isolation of Small Noncoding RNAs from Human Serum
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Cited by 13 •
2014
This protocol describes a method for extracting small RNAs from human serum. We have used this method to isolate microRNAs from cancer serum for use in DNA arrays and also singleplex quantitative PCR. The protocol utilizes phenol and guanidinium thiocyanate reagents with modifications to yield high quality RNA.
05:33
A Microneutralization Assay to Measure Neutralizing Antibody Titers in Human Serum
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2025
This video demonstrates Microneutralization assays to measure neutralizing antibodies using Madin-Darby Canine Kidney cells overexpressing α2,6-linked sialic acid in human sera. This assay is often used for influenza human...
02:55
Determining the Role of Vitronectin in Bacterial Resistance to Bactericidal Activity of Human Serum
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2025
This video demonstrates the role of vitronectin, a human serum glycoprotein, on bacterial resistance. Antibodies in the serum interact with bacterial surface proteins, activating complement proteins and forming the membrane attack complex, causing bacterial cell lysis. Vitronectin binding on bacterial membrane protein prevents the membrane attack complex formation, resulting in bacterial survival.
03:52
An Assay to Detect Autoantibodies in Human Serum using a Hippocampal Neuronal Culture
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2025
This video demonstrates a technique for identifying antibodies against specific antigens in a sample using a rat hippocampal neuronal culture. By exposing cultured neurons to patient samples containing autoantibodies targeting N-Methyl-D-aspartate receptors (NMDARs), the presence of autoantibodies bound to the neuronal surface is revealed through immunostaining.
09:23
Using Extraordinary Optical Transmission to Quantify Cardiac Biomarkers in Human Serum
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Cited by 2 •
2017
This work describes a nanoimprinting lithography method to fabricate high-quality sensing arrays that work on the principle of extraordinary optical transmission. The biosensor is low-cost, robust, easy to use, and can detect cardiac troponin I in serum at clinically relevant concentrations (99th percentile cutoff ∼10-400 pg/mL, depending on the assay).
FAQs
Antibodies recognize and bind microbial antigens, which can neutralize infectious agents or mark them for removal. Their antigen specificity allows serum responses to distinguish among pathogens and measure whether an individual has developed an antibody response. In infection research, these interactions help connect molecular recognition with protection and provide a basis for serological testing.
Complement activation can produce several coordinated effects, including pathogen neutralization, opsonization, inflammation, and membrane damage. Opsonization means coating a pathogen so it is more readily targeted by immune defenses. Measuring complement activity therefore reveals functional features of host defense, while testing pathogen susceptibility shows how infectious agents respond to these serum-mediated pressures.
Antibody measurements primarily indicate recognition of specific microbial antigens and the presence of an immune response. Complement assessment instead examines activity within a soluble defense system that can promote inflammation, opsonization, or membrane damage. Considering both readouts helps distinguish antigen-specific immunity from broader functional effects that may influence pathogen survival.
In serological assays, serum supplies soluble immune factors that can reveal whether antibodies recognize microbial antigens. The resulting signal can support infection detection or measurement of an antibody response. Because the same type of analysis can be applied to samples collected in different immune contexts, it also supports investigation of responses associated with infection or vaccination.
Testing serum against a pathogen can indicate whether the agent is susceptible to antibody-mediated neutralization, complement effects, or other soluble host-defense activities. These experiments connect serum composition with infectious-agent behavior. They are useful for studying interactions between pathogens and the human immune system and for comparing how immune factors influence potential outcomes.
Standardized samples make it easier to compare immune measurements across experiments, including antibody responses, complement activity, and pathogen susceptibility. They can support studies of variation among human immune responses, evaluation of vaccine-induced protection, and investigation of diagnostic biomarkers. This consistency helps researchers interpret whether observed differences reflect biological effects rather than inconsistent sample characteristics.