Somatostatin Omeprazole

Somatostatin and omeprazole are pharmacologic agents that reduce gastrointestinal secretory activity, but they act through distinct mechanisms and have different clinical roles. Somatostatin is an inhibitory peptide that suppresses the release of several gastrointestinal hormones and decreases splanchnic blood flow, while omeprazole blocks the gastric parietal-cell H+/K+-ATPase, directly reducing acid secretion. In medicine, these agents are relevant to managing acid-related disorders and upper gastrointestinal bleeding, where control of gastric acidity, digestive secretions, and local blood flow can support hemostasis and symptom relief. Understanding their mechanisms helps clinicians select targeted therapy and interpret their use in gastrointestinal research and care.

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JoVE Journal - Biology

A Fluorescent Screening Assay for Identifying Modulators of GIRK Channels

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Cited by 7 •

2012

A real-time screening procedure for identifying drugs that interact with G protein-gated inward rectifier K+ (GIRK) channels is described. The assay utilizes membrane potential-sensitive fluorescent dyes to measure GIRK channel activity. This technique is adaptable for use on a number of cell lines.

Viral-mediated Labeling and Transplantation of Medial Ganglionic Eminence (MGE) Cells for In Vivo Studies

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Cited by 35 •

2015

GABAergic cortical interneuron progenitors disperse, develop and synaptically integrate into a host cortex after transplantation. These cells can be easily transduced before transplantation for in vivo studies of genetically modified GABAergic precursors. Here, we show viral labeling techniques to target specific interneuron subgroups using existing Cre lines and Cre-dependent reporters.

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles

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Cited by 12 •

2016

A method is described whereby quantum dot (QD) nanoparticles can be used for correlative immunocytochemical studies of epoxy embedded human pathology tissue. We employ commercial antibody fragment conjugated QDs that are visualized by widefield fluorescence light microscopy and transmission electron microscopy.

Confocal Imaging of Neuropeptide Y-pHluorin: A Technique to Visualize Insulin Granule Exocytosis in Intact Murine and Human Islets

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Cited by 12 •

2017

We describe a protocol for visualization of insulin exocytosis in intact islets using pHluorin, a pH-sensitive green fluorescent protein. Isolated islets are infected with adenovirus encoding pHluorin coupled to the vesicle cargo neuropeptide Y. This allows for the detection of insulin granule fusion events by confocal microscopy.

Custom-made Microdialysis Probe Design

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Cited by 9 •

2015

Microdialysis is a commonly used technique in neuroscience research. Therefore commercial probes are in great demand.In this work a probe assembly is explained in detail to build a reliable, concentric, custom-made microdialysis probe for less than $10.

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