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Related Concept Videos

Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...
Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...

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Related Experiment Video

Updated: Jun 11, 2026

Assessing Whole-Body Lipid-Handling Capacity in Mice
07:57

Assessing Whole-Body Lipid-Handling Capacity in Mice

Published on: November 24, 2020

Decrease in hepatic very-low-density lipoprotein-triglyceride secretion after weight loss is inversely associated

F Magkos1, E Fabbrini, J McCrea

  • 1Center for Human Nutrition, Washington University School of Medicine, St Louis, MO 63110, USA.

Diabetes, Obesity & Metabolism
|July 2, 2010
PubMed
Summary
This summary is machine-generated.

Weight loss reduces very-low-density lipoprotein-triglyceride (VLDL-TG) secretion, primarily from non-systemic sources. Declining plasma leptin levels after weight loss are inversely associated with these VLDL-TG secretion changes.

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Last Updated: Jun 11, 2026

Assessing Whole-Body Lipid-Handling Capacity in Mice
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Network Pharmacology Prediction and Metabolomics Validation of the Mechanism of Fructus Phyllanthi against Hyperlipidemia
11:06

Network Pharmacology Prediction and Metabolomics Validation of the Mechanism of Fructus Phyllanthi against Hyperlipidemia

Published on: April 7, 2023

Area of Science:

  • Metabolic Research
  • Obesity Studies
  • Lipid Metabolism

Background:

  • Weight loss typically decreases very-low-density lipoprotein-triglyceride (VLDL-TG) secretion, but the kinetics are not directly tied to body weight changes.
  • Circulating leptin levels decrease with weight loss and can influence hepatic lipid metabolism.

Purpose of the Study:

  • To investigate the association between circulating leptin levels and weight loss-induced alterations in VLDL-TG secretion.

Main Methods:

  • Stable isotopically labelled tracer methods were used to assess VLDL-TG secretion rate.
  • The study included ten extremely obese subjects before and one year after gastric bypass surgery.
  • Quantified contributions of systemic and non-systemic fatty acids to VLDL-TG production.

Main Results:

  • Subjects achieved a mean body weight loss of 33% and a 46% decrease in VLDL-TG secretion rate (p=0.001).
  • The reduction in VLDL-TG secretion was mainly driven by decreased secretion from non-systemic fatty acids (p=0.002).
  • Changes in VLDL-TG secretion were inversely correlated with plasma leptin concentration changes (r=-0.72, p=0.013).

Conclusions:

  • Weight loss-induced changes in plasma leptin concentration show an inverse association with VLDL-TG secretion rate.
  • Further research is required to establish a causal relationship between leptin and VLDL-TG secretion.