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| Sample Type(s) | Serum, plasma, urine, cell, tissue, etc |
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Overview
For quantitative determination of glutamate (monosodium glutamate or MSG) and evaluation of drug effects on glutamate metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Serum, plasma, urine, cell, tissue, etc. Typical stated assay timing is 30 min.
Key elements and design rationale
- Readout format: OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.
- Sample compatibility: The stated sample scope includes Serum, plasma, urine, cell, tissue, etc, which is useful when aligning matrix type with calibration and control design.
- Analytical range context: The supplied specifications include a stated detection limit of 50 µM for interpreting low-signal samples.
- Feature emphasis: Sensitive and accurate. The detection limit of 50 µM, linearity up to 2.5 mM glutamate in a 96-well plate assay.
Additional feature notes highlight Convenient. The procedure involves adding a single working reagent and reading the optical density at time zero and at 30 min at room temperature. No 37°C heater is needed; High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Available format information for this listing includes 100 Tests.
Biological background
This product is centered on measurement of glutamate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.
More details
Glutamate is an important chemical in general metabolism. It is also a crucial mammalian neurotransmitter that is believed to be involved in a number of neurological and psychiatric disorders such as lateral sclerosis, lathyrism, autism, and Alzheimer’s disease. Glutamate is also widely used as a flavor enhancer in the food industry. Simple, direct, and automation-ready procedures for measuring glutamate concentration are very desirable. BioAssay Systems EnzyChrom™ glutamate assay kit is based on glutamate dehydrogenase catalyzed oxidation of glutamate, in which the formed NADH reduces a formazan (MTT) Reagent. The intensity of the product color, measured at 565 nm, is proportionate to the glutamate concentration in the sample.
Detection method
Colorimetric (OD 565 nm).
Detection limit and analytical sensitivity
Reported detection limit: 50 µM.
Procedures and timing
Stated procedure or timing information: 30 min.
Research relevance and current trends
- Plate-based quantification and side-by-side group comparison remain central use cases for this assay format.
- The product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.
- The description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.
Common research applications
- Quantify glutamate in serum, plasma, urine, cell, tissue by OD565 nm readout.
- Compare treatment or phenotype groups using matched serum, plasma, urine, cell, tissue handling.
- Monitor time-course or pre/post changes in serum, plasma, urine, cell, tissue across study conditions.
Interpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.
Notes for experimental interpretation
- Matrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.
- Use appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.
For laboratories requiring additional technical capacity, we provide scientific support services including assay execution, method guidance, product sourcing, and customization to align the assay with specific experimental objectives. If you need assistance selecting the appropriate kit configuration, adapting the workflow to your application, or identifying related research services, please click Talk to a Scientist, email support@biohippo.com, or review our Research Services; a member of our scientific team will follow up with recommendations tailored to your study.
Novel MscL agonists that allow multiple antibiotics cytoplasmic access activate the channel through a common binding site
Wray, R et al. (2020). Novel MscL agonists that allow multiple antibiotics cytoplasmic access activate the channel through a common binding site. PLOS ONE, 15(1), e0228153. Assay: Glutamate in E. coli.
Host nutrient milieu drives an essential role for aspartate biosynthesis during invasive Staphylococcus aureus infection
Potter, AD et al. (2020). Host nutrient milieu drives an essential role for aspartate biosynthesis during invasive Staphylococcus aureus infection. Proceedings of the National Academy of Sciences, 117(22): 12394-12401. Assay: Glutamate in mouse bones.
The regulatory role of neurotransmitters in orexin b induced nucleus accumbens dependent alcohol ingestion in Wistar albino rats
Rashmi, KS et al. (2020). The regulatory role of neurotransmitters in orexin b induced nucleus accumbens dependent alcohol ingestion in Wistar albino rats. RESEARCH JOURNAL OF PHARMACY AND TECHNOLOGY, 13(12): 6224-6230. Assay: Glutamate in mouse.
Development of an Astrocyte/Glioma Co-Culture System for Measuring Cellular Dynamics
Kansakar, U. (2019). Development of an Astrocyte/Glioma Co-Culture System for Measuring Cellular Dynamics. Assay: Glutamate in rat cells.
Safety and efficacy of human embryonic stem cell-derived astrocytes following intrathecal transplantation in SOD1 G93A and NSG animal models
Izrael, Michal, et al (2018). Safety and efficacy of human embryonic stem cell-derived astrocytes following intrathecal transplantation in SOD1 G93A and NSG animal models. Stem cell research & therapy 9.1: 152. Assay: Glutamate in human cells.
Multiplexed and fully automated detection of metabolic biomarkers using microdialysis probe
Das, Champak, et al (2017). Multiplexed and fully automated detection of metabolic biomarkers using microdialysis probe. Sensors and Actuators B: Chemical 238: 633-640. Assay: Glutamate in glucose.
Loss of expression of the recycling receptor, FcRn, promotes tumor cell growth by increasing albumin consumption
Swiercz, Rafal, et al (2017). Loss of expression of the recycling receptor, FcRn, promotes tumor cell growth by increasing albumin consumption. Oncotarget 8.2: 3528-3541. Assay: Glutamate in human cells.
Directed differentiation of astrocytes from human pluripotent stem cells for use in drug screening and the treatment of amyotrophic laterial sclerosis (als)
Izrael, Michal, et al (2016). Directed differentiation of astrocytes from human pluripotent stem cells for use in drug screening and the treatment of amyotrophic laterial sclerosis (als). U.S. Patent Application No. 15/025,946. Assay: Glutamate in human cells.
Alterations in cellular metabolome after pharmacological inhibition of N otch in glioblastoma cells
Kahlert, Ulf D., et al (2016). Alterations in cellular metabolome after pharmacological inhibition of N otch in glioblastoma cells. International journal of cancer 138.5: 1246-1255. Assay: Glutamate in human cells.
Dihydrostreptomycin directly binds to, modulates, and passes through the MscL channel pore
Wray, Robin, et a (2016). Dihydrostreptomycin directly binds to, modulates, and passes through the MscL channel pore. PLoS biology 14.6: e1002473. Assay: Glutamate in E. coli cells.
System xC- is a mediator of microglial function and its deletion slows symptoms in amyotrophic lateral sclerosis mice
Mesci, P et al (2015). System xC- is a mediator of microglial function and its deletion slows symptoms in amyotrophic lateral sclerosis mice. Brain. 138(Pt 1):53-68. Assay: Glutamate in mice spinal cord tissue.
Streptomycin potency is dependent on MscL channel expression
Iscla, I et al (2014). Streptomycin potency is dependent on MscL channel expression. Nature Communications. 5:4891. Assay: Glutamate in E. coli vector.
Native Presynaptic Metabotropic Glutamate Receptor 4 (mGluR4) Interacts with Exocytosis Proteins in rat Cerebellum
Ramos, C et al (2012). Native Presynaptic Metabotropic Glutamate Receptor 4 (mGluR4) Interacts with Exocytosis Proteins in rat Cerebellum. Journal of Biological Chemistry 287(24):20176-86. Assay: Glutamate in rat protein lysate.
Additive effect of tetramethylpyrazine and deferoxamine in the treatment of spinal cord injury caused by aortic cross-clamping in rats
Liang, Y., et al. (2011). Additive effect of tetramethylpyrazine and deferoxamine in the treatment of spinal cord injury caused by aortic cross-clamping in rats. Spinal Cord 49(2):302-6. Assay: Glutamate in rat.
Oxygen-inducible glutamate oxaloacetate transaminase as protective switch transforming neurotoxic glutamate to metabolic fuel during acute ischemic stroke
Rink, C., et al (2011). Oxygen-inducible glutamate oxaloacetate transaminase as protective switch transforming neurotoxic glutamate to metabolic fuel during acute ischemic stroke. Antioxid Redox Signal 14(10):1777-85. Assay: Glutamate in rat brain tissue.
Manipulating the permeation of charged compounds through the MscL nanovalve
Yang, LM and Blount, P. (2011). Manipulating the permeation of charged compounds through the MscL nanovalve. FASEB J 25(1):428-34. Assay: Glutamate in E. coli.