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How can pancreatic cancer affect blood sugar metabolism?
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pancreatic cancer
The human pancreas is composed of two main types of tissue: acinar cells and islets of Langerhans. The acinar cells produce digestive enzymes, which are secreted into tiny ducts that feed into the pancreatic duct. Islets of Langerhans are clusters of cells that secrete hormones such as insulin and glucagon directly into a capillary network, which also joins the pancreatic duct.
Pancreatic cancer can affect blood sugar metabolism in several ways, depending on whether the tumor originates in the endocrine or exocrine tissue of the pancreas.2
- Endocrine Tumors: These rare tumors arise from the islets of Langerhans, which are responsible for secreting insulin and glucagon to regulate blood sugar. Functional tumors can cause metabolic imbalances:12
- Insulinomas: These tumors secrete excess insulin, which can lead to hypoglycemia (abnormally low blood glucose).1
- Glucagonomas: These tumors secrete excess glucagon, resulting in a condition known as "diabetes-dermatitis syndrome," characterized by mild diabetes.1
- Exocrine Tumors: While 95 percent of pancreatic cancers develop from the exocrine pancreas, they are frequently associated with problems in sugar metabolism. Diabetes mellitus is both a known risk factor for developing these cancers and a common symptom that may appear as the disease progresses.234
Because the pancreas is essential for maintaining glucose homeostasis, any malignancy affecting its structure or function can disrupt the body's ability to regulate blood sugar levels effectively.23