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Related Concept Videos

The Endocrine System01:29

The Endocrine System

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The endocrine system is an extensive network of glands – organs or tissues in the body that create chemicals that control many bodily functions, that secrete hormones, which are chemical messengers that play essential roles in regulating various bodily functions. These hormones are secreted into the bloodstream and travel throughout the body. They require specific receptors to convey signals to cells possessing these corresponding receptors. This complex signaling mechanism ensures that...
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Cells and Secretions of the Pancreas01:16

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The pancreas, a vital organ within the abdominal cavity, plays dual roles in the digestive and endocrine systems, collaborating with exocrine and endocrine cells to maintain optimal digestion and blood sugar levels.
Exocrine function is carried out by acinar cells, organized into clusters known as acini. These cells contribute to digestion by releasing substantial quantities of enzyme-rich, alkaline digestive juices.
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Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

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The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
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Hormones Regulating Blood Glucose01:16

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Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
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Chronic Pancreatitis II: Collaborative Care01:29

Chronic Pancreatitis II: Collaborative Care

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The management of chronic pancreatitis is multifaceted, involving a comprehensive approach that includes thorough assessment, diagnostic testing, and a variety of management strategies.
Assessment:
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Chronic Pancreatitis I: Introduction01:24

Chronic Pancreatitis I: Introduction

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The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
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Isolation of Human Islets from Partially Pancreatectomized Patients
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[Changes in Endocrine Function in Patients after Pancreatic Surgery].

Takeshi Hijikawa1, Hiroaki Kitade, Hidesuke Yanagida

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Summary

This study examined glucose metabolism after pancreatic surgery, finding that pancreatic endocrine function is generally preserved. Hemoglobin A1c levels showed no significant change, suggesting good glucose control post-operation.

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Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Metabolic Research

Background:

  • Pancreatic surgery, including pancreatoduodenectomy (PD), distal pancreatectomy (DP), and partial resection (PR), can impact glucose metabolism.
  • Diabetes mellitus is a common comorbidity in patients undergoing pancreatic surgery.

Purpose of the Study:

  • To investigate the impact of different pancreatic resection types on glucose metabolism.
  • To assess changes in glycemic control, specifically Hemoglobin A1c (HbA1c) levels, before and after pancreatic surgery.

Main Methods:

  • Retrospective analysis of patients who underwent PD, DP, or PR.
  • Measurement and comparison of HbA1c levels preoperatively and postoperatively.

Main Results:

  • A significant proportion of patients were diabetic both before and after surgery (36% before PD, 38% after PD; 60% before and after DP).
  • No significant differences were observed in preoperative versus postoperative HbA1c levels for PD (7.5±2.7% vs 6.7±1.1%) and DP (7.5±1.3% vs 6.3±0.7%) patients.

Conclusions:

  • Pancreatic surgery, including PD and DP, appears to preserve pancreatic endocrine function.
  • Glycemic control, as indicated by HbA1c levels, is generally maintained following pancreatic resection.