Related Experiment Video
Updated: Jun 3, 2026

11:36
A RAPID Method for Blood Processing to Increase the Yield of Plasma Peptide Levels in Human Blood
Published on: April 28, 2016
Ghrelin- and serotonin-producing gastric carcinoid
Eleanor Latta1, Fabio Rotondo, Lawrence A Leiter
1Department of Laboratory Medicine, Division of Pathology, St. Michael's Hospital, University of Toronto, Toronto, ON, M5B1W8, Canada.
Journal of Gastrointestinal Cancer
|March 23, 2011
Summary
A gastric carcinoid tumor in a 57-year-old woman co-produced ghrelin and serotonin. This rare hormonal combination
Area of Science:
- Gastroenterology
- Endocrinology
- Oncology
Background:
- Gastric carcinoid tumors are rare neuroendocrine neoplasms.
- Understanding their molecular and hormonal profiles is crucial for diagnosis and treatment.
Observation:
- A 57-year-old female patient presented with a gastric carcinoid tumor.
- Surgical resection of the tumor was performed.
- Immunohistochemical analysis was conducted on the tumor tissue.
Findings:
- The gastric carcinoid tumor cells exhibited a rare co-expression of ghrelin and serotonin.
- Both hormones were localized within the cytoplasm of the tumor cells.
Implications:
- The simultaneous production of ghrelin and serotonin in gastric carcinoid is not fully understood.
- Potential autocrine or paracrine interactions between these hormones may influence tumor behavior.
- Further research is needed to elucidate the functional significance of this dual hormone production.
Related Concept Videos
Hormones Secreted by the Stomach
Enteroendocrine cells, accounting for only 1% of stomach epithelial cells, play a significant role in digestion and are classified by their digestive hormone secretions.
Each of these hormones secreted by different enteroendocrine cells plays a unique role in digestion. Here are a few examples:
Each of these hormones secreted by different enteroendocrine cells plays a unique role in digestion. Here are a few examples:
Gastritis II: Pathophysiology
The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists
Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
Hormonal Regulation
Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
Intestinal Phase of Digestion
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
Pathophysiology of Peptic Ulcer Disease: Injurious Factors
Peptic ulcers are sores on the stomach's inner lining and the upper small intestine, which are the result of disruptions in the mucosal layer that houses parietal cells which produce gastric acid, and chief cells which secrete pepsinogen.
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds to M3...
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds to M3...
