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Skeletal muscle structural lipids improve during weight-maintenance after a very low calorie dietary intervention

Haugaard, Steen B.; Vaag, Allan LU ; Mu, Huiling and Madsbad, Sten (2009) In Lipids in Health and Disease 8.
Abstract
Background: The objective was to investigate in a group of obese subjects the course in skeletal muscle phospholipid (SMPL) fatty acids (FA) during a 24-weeks weight maintenance program, which was preceded by a successful very low calorie dietary intervention (VLCD). Special focus was addressed to SMPL omega-3 FA, which is a lipid entity that influences insulin action. Methods: Nine obese subjects (BMI = 35.7 +/- 1.0 kg/m(2)), who had completed an 8 weeks VLCD (weight-loss = -9.7 +/- 1.6 kg, P < 0.001), had obtained skeletal muscle biopsies (vastus lateralis) before and after a dietician-guided 24-weeks weight-maintenance program (-1.2 +/- 1.5 kg, P = ns). SMPL FA composition was determined by gas liquid chromatography. During the... (More)
Background: The objective was to investigate in a group of obese subjects the course in skeletal muscle phospholipid (SMPL) fatty acids (FA) during a 24-weeks weight maintenance program, which was preceded by a successful very low calorie dietary intervention (VLCD). Special focus was addressed to SMPL omega-3 FA, which is a lipid entity that influences insulin action. Methods: Nine obese subjects (BMI = 35.7 +/- 1.0 kg/m(2)), who had completed an 8 weeks VLCD (weight-loss = -9.7 +/- 1.6 kg, P < 0.001), had obtained skeletal muscle biopsies (vastus lateralis) before and after a dietician-guided 24-weeks weight-maintenance program (-1.2 +/- 1.5 kg, P = ns). SMPL FA composition was determined by gas liquid chromatography. During the preceding VLCD, insulin sensitivity (HOMA-IR) and glycemic control (HbA1c) improved but no change in SMPL omega-3 FA was observed. During the weight-maintenance program five subjects received the pancreas lipase inhibitor Orlistat 120 mg t.i.d. versus placebo. Results: HOMA-IR and HbA1c stabilized and SMPL total omega-3 FA, docosahexaenoic acid and ratio of n-3/n-6 polyunsaturated FA increased by 24% (P < 0.01), 35% (P < 0.02) and 26% (P < 0.01), respectively, whereas saturated and monounsaturated FA did not change. Plasma total-cholesterol and LDL-cholesterol, which decreased during the VLCD, reverted to pre-VLCD levels (P < 0.01). Orlistat therapy was associated with weight-loss (P < 0.05), trends for better glycemic control (P = 0.15) and greater increase in SMPL docosahexaenoic acid (P = 0.12) but similar reversal of plasma cholesterols compared to placebo. Conclusion: The data are consistent with the notion that greater SMPL omega-3 FA obtained during a weight-maintenance program may play a role for preserving insulin sensitivity and glycemic control being generated during a preceding VLCD. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Lipids in Health and Disease
volume
8
publisher
BioMed Central
external identifiers
  • wos:000269547600001
  • scopus:69549126462
ISSN
1476-511X
DOI
10.1186/1476-511X-8-34
language
English
LU publication?
yes
id
7a0dcdb0-820d-4597-bd5b-0a37687652e9 (old id 1475080)
date added to LUP
2009-10-02 09:41:56
date last changed
2017-02-05 03:58:59
@article{7a0dcdb0-820d-4597-bd5b-0a37687652e9,
  abstract     = {Background: The objective was to investigate in a group of obese subjects the course in skeletal muscle phospholipid (SMPL) fatty acids (FA) during a 24-weeks weight maintenance program, which was preceded by a successful very low calorie dietary intervention (VLCD). Special focus was addressed to SMPL omega-3 FA, which is a lipid entity that influences insulin action. Methods: Nine obese subjects (BMI = 35.7 +/- 1.0 kg/m(2)), who had completed an 8 weeks VLCD (weight-loss = -9.7 +/- 1.6 kg, P &lt; 0.001), had obtained skeletal muscle biopsies (vastus lateralis) before and after a dietician-guided 24-weeks weight-maintenance program (-1.2 +/- 1.5 kg, P = ns). SMPL FA composition was determined by gas liquid chromatography. During the preceding VLCD, insulin sensitivity (HOMA-IR) and glycemic control (HbA1c) improved but no change in SMPL omega-3 FA was observed. During the weight-maintenance program five subjects received the pancreas lipase inhibitor Orlistat 120 mg t.i.d. versus placebo. Results: HOMA-IR and HbA1c stabilized and SMPL total omega-3 FA, docosahexaenoic acid and ratio of n-3/n-6 polyunsaturated FA increased by 24% (P &lt; 0.01), 35% (P &lt; 0.02) and 26% (P &lt; 0.01), respectively, whereas saturated and monounsaturated FA did not change. Plasma total-cholesterol and LDL-cholesterol, which decreased during the VLCD, reverted to pre-VLCD levels (P &lt; 0.01). Orlistat therapy was associated with weight-loss (P &lt; 0.05), trends for better glycemic control (P = 0.15) and greater increase in SMPL docosahexaenoic acid (P = 0.12) but similar reversal of plasma cholesterols compared to placebo. Conclusion: The data are consistent with the notion that greater SMPL omega-3 FA obtained during a weight-maintenance program may play a role for preserving insulin sensitivity and glycemic control being generated during a preceding VLCD.},
  author       = {Haugaard, Steen B. and Vaag, Allan and Mu, Huiling and Madsbad, Sten},
  issn         = {1476-511X},
  language     = {eng},
  publisher    = {BioMed Central},
  series       = {Lipids in Health and Disease},
  title        = {Skeletal muscle structural lipids improve during weight-maintenance after a very low calorie dietary intervention},
  url          = {http://dx.doi.org/10.1186/1476-511X-8-34},
  volume       = {8},
  year         = {2009},
}