Related Experiment Video
Updated: May 27, 2026

06:25
Long-Term Catheterization of the Intestinal Lymph Trunk and Collection of Lymph in Neonatal Pigs
Published on: March 5, 2016
Lipoprotein lipase deficiency in an infant
Sheela Nampoothiri1, Natasha Radhakrishnan, Andrea Schwentek
1Department of Pediatric Genetics, Amrita Institute of Medical Sciences and Research Center, Cochin, Kerala, India. sheeladr@gmail.com
Indian Pediatrics
|November 15, 2011
Summary
Severe hypertriglyceridemia in infants can cause serious symptoms. This case highlights novel mutations in the lipoprotein lipase gene as a cause in an infant.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Isolated hypertriglyceridemia is a lipid disorder often presenting with symptoms like pancreatitis and eruptive xanthomas.
- Severe hypertriglyceridemia can lead to significant health complications, particularly in infants.
Observation:
- A case study of an infant diagnosed with severe hypertriglyceridemia is presented.
- The infant exhibited symptoms commonly associated with this condition.
Findings:
- Genetic analysis revealed the infant was heterozygous for two previously unidentified mutations.
- These novel mutations were identified in the lipoprotein lipase gene, crucial for triglyceride metabolism.
Implications:
- This discovery expands the known genetic causes of severe hypertriglyceridemia.
- Identifying novel mutations aids in understanding the disease's genetic basis and developing targeted diagnostics and treatments.
- Early diagnosis and genetic insights are vital for managing pediatric hypertriglyceridemia.
Related Concept Videos
Lipid Digestion
Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
Inborn Errors of Metabolism
Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
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...
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...
Lysosomal Hydrolases
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
Lipid Absorption
Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
Formation of Lipopolysaccharides
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...

