Somatostatin Receptor Imaging
Somatostatin Receptor Imaging - Related Videos
03:11
High-Resolution Imaging of Neurotransmitter Receptors at Retinal Synapses
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2025
Source: Zhang, J., et al. High-Resolution Quantitative Immunogold Analysis of Membrane Receptors at Retinal Ribbon Synapses. J. Vis. Exp. (2016)This video demonstrates an electron microscopy technique for visualizing neurotransmitter receptor localization in retinal synapses. The retinal sections contain retinal ganglion cells that exhibit membrane-bound neurotransmitter receptors and are labeled with cholera toxin subunit B (CTB). Upon labeling the markers with gold nanoparticle-conjugated...
07:42
Imaging of Estrogen Receptor-α in Rat Pial Arterioles using a Digital Immunofluorescent Microscope
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2011
The goal of this article is to demonstrate a method to optimize immunofluorescent detection of estrogen receptor-α (ERα) in rat pial arterial slices using a digital immunofluorescent microscope.
12:03
Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
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Cited by 14 •
2016
Here we present a protocol to describe the localization of angiotensin II Type 1 receptors in the rat brain by quantitative, densitometric, in vitro receptor autoradiography using an iodine-125 labeled analog of angiotensin II.
12:58
Imaging pHluorin-tagged Receptor Insertion to the Plasma Membrane in Primary Cultured Mouse Neurons
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Cited by 8 •
2012
By tagging the extracellular domains of membrane receptors with superecliptic pHluorin, and by imaging these fusion receptors in cultured mouse neurons, we can directly visualize individual vesicular insertion events of the receptors to the plasma membrane. This technique will be instrumental in elucidating the molecular mechanisms governing receptor insertion to the plasma membrane.
08:47
Spectral Confocal Imaging of Fluorescently tagged Nicotinic Receptors in Knock-in Mice with Chronic Nicotine Administration
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Cited by 12 •
2012
We have developed a novel technique of quantifying nicotinic acetylcholine receptor changes within subcellular regions of specific subtypes of CNS neurons to better understand the mechanisms of nicotine addiction by using a combination of approaches including fluorescent protein tagging of the receptor using the knock-in approach and spectral confocal imaging.
FAQs
The radiolabeled somatostatin analog acts as a molecular probe by binding somatostatin receptor proteins on the cell surface. Receptor-bearing cells therefore retain the tracer-associated signal, allowing PET or SPECT systems to map their distribution. This molecular targeting distinguishes receptor-expressing tissue from surrounding areas and makes the images informative about tumor biology, not only anatomy.
Well-differentiated neuroendocrine tumors are particularly relevant because they commonly express somatostatin receptors, providing binding sites for peptide-based tracers. When these receptors are present, imaging can reveal the location of receptor-positive disease and show its distribution. The result supports characterization of the tumor and helps connect imaging findings with subsequent management decisions.
Both PET and SPECT can capture signals generated by radiolabeled somatostatin analogs after receptor binding, but they represent different imaging platforms for visualizing that molecular distribution. The overview supports their shared purpose rather than a specific superiority of one method. In either case, the key information comes from where receptor-targeted signal is detected in the body.
Receptor imaging provides more than a map of disease because it also identifies whether tumor cells display the molecular target required for receptor-directed treatment. A positive receptor pattern can therefore inform consideration of targeted radionuclide therapy, while the same examination helps characterize disease extent. This links diagnostic imaging with treatment selection in contemporary oncology.
The images can help locate a primary neuroendocrine tumor and reveal metastatic sites, providing an overview of disease distribution. They can also assist in assessing overall disease extent, which is important when clinicians plan management. Because the signal reflects receptor expression, the examination contributes both anatomic localization and molecular characterization of relevant tumor tissue.
This approach is useful when clinicians need to evaluate suspected or known well-differentiated neuroendocrine tumors at the level of receptor expression. It can support localization of the primary lesion, detection of metastases, assessment of disease extent, and treatment planning. Its clinical value is greatest when the distribution of receptor-positive disease will influence oncologic decision-making.