Cited by 30Lipid metabolism and biosynthesisAdipose Tissue and MetabolismLipid metabolism and disorders

Depot- and Gender-related Differences in the Lipolytic Pathway of Adipose Tissue from Severely Obese Patients

Ramis, Joana M., Salinas, Ramón, García-Sanz, José M., Moreiro, José, Proenza, Ana M., Lladó, Isabel·2006·Cellular Physiology and Biochemistry

Abstract

The present study was performed to analyze in detail gender- and site-related alterations in the adrenergic signal transduction pathway of lipolysis in fat cells isolated from subcutaneous abdominal and visceral fat depots from severely obese patients. The study group consisted of 30 morbidly obese subjects (9 men and 21 women) aged 41.1+/-1.9 years, with a body mass index (BMI) of 54.7+/-1.7 kg/m2, who had undergone abdominal surgery. Protein levels of hormone-sensitive lipase (HSL) and adrenergic receptors (AR), as well as HSL activity and the lipolytic response to adrenergic agents were analyzed. Both fat depots had similar basal lipolysis, but the capacity of catecholamines to activate lipolysis was greater in visceral fat, both at AR and postreceptor levels. Basal lipolysis and lipolytic activity induced by dibutyryl cyclic AMP were higher in men than in women. However, the visceral depot of women showed a higher maximal stimulation by noradrenaline than that of men, in accordance with higher beta1- and beta3-AR protein levels. In conclusion, the main gender-related differences were located in the visceral depot, with women exhibiting a higher sensitivity to catecholamines associated with an increased provision of beta-AR, while men showed an enhanced lipolytic capacity at the postreceptor level.

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Authors
Ramis, J. M., Salinas, R., García-Sanz, J. M., Moreiro, J., Proenza, A. M., & Lladó, I.
Affiliations
  • Hospital Universitario Son Dureta (ES)
  • Research Institute of Health Sciences (ES)
Venue
Cellular Physiology and Biochemistry
Publisher
S. Karger AG
Published
2006
Volume
17
Issue
3-4
Pages
173-180
ISSN
  • 1015-8987 (ISSN-L)
  • 1421-9778
OpenAlex
W1971174667
Cited by
30
References
35
Citations by year
2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 1 · 2018: 2 · 2017: 1 · 2015: 1 · 2013: 2 · 2012: 1
FWCI
1.36
Type
journal article
Language
en
Open access
closed
Locations
  • Cellular Physiology and Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Docusalut (Conselleria de Salut i Consum del Govern de les Illes Balears) (submittedVersion)
  • Hispana (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
lipolysis, adipose tissue, morbid obesity, visceral fat, subcutaneous abdominal fat, sex differences, catecholamines, adrenergic receptors, beta1-adrenergic receptor, beta3-adrenergic receptor, hormone-sensitive lipase, cyclic AMP, norepinephrine, post-receptor signaling
MeSH terms
Adipose Tissue, Adult, Sterol Esterase, Bucladesine, Dose-Response Relationship, Drug, Female, Colforsin, Humans, Lipolysis, Male, Middle Aged, Norepinephrine, Obesity, Morbid, Receptors, Adrenergic, alpha, Receptors, Adrenergic, beta, Sex Factors, Blotting, Western, Body Mass Index, Adipocytes, Intra-Abdominal Fat, Abdominal Fat

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