Cited by 67Lipid metabolism and disordersLipid metabolism and biosynthesisAdipose Tissue and Metabolism

Inherited lipodystrophies and hypertriglyceridemia.

Simha, Vinaya, Garg, Abhimanyu·2009·Current Opinion in Lipidology

Abstract

PURPOSE OF REVIEW: Inherited lipodystrophies are rare autosomal recessive and dominant disorders characterized by selective, but variable, loss of adipose tissue. Marked hypertriglyceridemia is a common feature of these disorders and highlights the role of adipose tissue in lipid homeostasis. In the last decade, advances have been made in elucidating the molecular basis of many inherited lipodystrophies. We review the new insights in the pathophysiology and treatment of these disorders based on the current understanding of the biologic role of these lipodystrophy genes. RECENT FINDINGS: Eight different genetic loci, including 1-acylglycerol-3-phosphate-O-acyltransferase 2, Berardinelli-Seip congenital lipodystrophy 2, caveolin 1, lamin A/C, peroxisome proliferator-activated receptor gamma, v-AKT murine thymoma oncogene homolog 2, zinc metalloprotease and lipase maturation factor 1 have been described linked to different lipodystrophy syndromes. Mutations in these genes may cause fat loss and dyslipidemia through multiple mechanisms, which remain fully elucidated; however, they may involve defects in development and differentiation of adipocytes, and premature death and apoptosis of adipocytes. Hypertriglyceridemia is a consequence of increased VLDL synthesis from the liver, which is also loaded by ectopic triglyceride deposition, reduced clearance of triglyceride-rich lipoproteins or both. A recent study in mice with Agpat2 deficiency reports marked reduction in serum triglyceride upon feeding a fat-free diet, which suggests that low-fat diets are likely to be beneficial in lipodystrophic patients. Leptin replacement therapy is also a promising therapeutic option for lipodystrophic patients with hypoleptinemia. SUMMARY: Inherited lipodystrophies are an important cause for monogenic hypertriglyceridemia and serve to highlight the role of adipocytes in maintaining normolipidemia.

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Crossref · 10.1097/mol.0b013e32832d4a33

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Authors
Simha, V., & Garg, A.
Affiliations
The University of Texas Southwestern Medical Center (US)
Corresponding author
Garg, Abhimanyu
Venue
Current Opinion in Lipidology
Published
2009-08
Volume
20
Issue
4
Pages
300-308
ISSN
0957-9672 (ISSN-L)
OpenAlex
W2004366492
Cited by
67
References
64
Citations by year
2025: 7 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 2 · 2017: 1 · 2015: 3 · 2014: 4 · 2013: 6 · 2012: 5
FWCI
1.24
Type
journal article
Language
en
Open access
closed
Locations
  • Current Opinion in Lipidology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • U.S. Public Health Service (R01-74959)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK054387)
  • National Center for Research Resources (UL1RR024982)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
hypertriglyceridemia, adipose tissue loss, adipogenesis, adipocyte apoptosis, dyslipidemia, VLDL synthesis, AGPAT2, caveolin-1, lamin A/C, PPARγ, low-fat diet, leptin replacement therapy, hypoleptinemia, lipid homeostasis
MeSH terms
Animals, Humans, Lipodystrophy, Hypertriglyceridemia, Adipocytes, Lipodystrophy, Congenital Generalized

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