Conjugated Linoleic Acid (CLA) Supplementation for 8 Weeks Reduces Body Weight in Healthy Overweight/Obese Korean Subjects

  • Park, Eun-Ju (Department of Food and Nutrition, Kyungnam University) ;
  • Kim, Jung-Mi (Department of Food and Nutrition, Kyungnam University) ;
  • Kim, Kee-Tae (Bio/Molecular Informatics Center, Konkuk University) ;
  • Paik, Hyun-Dong (Division of Animal Life Science, Konkuk University)
  • Published : 2008.12.31

Abstract

In the present study, a randomized, double-blind, placebo-controlled trial to determine the effect of conjugated linoleic acid (CLA) supplementation (50:50 ratio of cis-9, trans-11 and trans-10, cis-12 isomers) for 8 weeks on body composition and biochemical parameters in healthy overweight/obese (body mass index, BMI${\geq}23\;kg/m^2$) Korean subjects was performed, Thirty participants (3 males and 27 females) were randomized to receive placebo (2.4 g olive oil/day) or 2.4g/day CLA (mixture containing 36.9% of cis-9, trans-11 and 37.9% of trans-10, cis-12). Eight weeks of CLA supplementation significantly decreased body weight by -0.75kg, BMI by $-0.27\;kg/m^2$, and hip circumference by -1.11 cm. The reduction of body weight was ascribed to the reduction of body fat mass (-0.59 kg) and lean body mass (-0.18 kg), although these changes were not significant. No significant differences in serum lipid profiles, liver function enzyme activities, and protein concentration were observed in either the CLA or placebo groups. These results indicate that short tenn supplementation (8 weeks) with CLA (2.4 g/day) may decrease body weight in Korean overweight/obese subjects.

Keywords

References

  1. Larsen TM, Toubro S, Astrup A. Efficacy and safety of dietary supplements containing CLA for the treatment of obesity: Evidence from animal and human studies. J. Lipid Res. 44: 2234-2241 (2003) https://doi.org/10.1194/jlr.R300011-JLR200
  2. Sehat N, Yurawecz MP, Roach JAG, Mossoba MM, Kramer JKG, Ku Y. Silver-ion high-performance liquid chromatographic separation and identification of conjugated linoleic acid isomers. Lipids 33: 217-221 (1998) https://doi.org/10.1007/s11745-998-0198-6
  3. Kepler CR, Hirons KP, McNeill JJ, Tove SB. Intermediates and products of the biohydrogenation of linoleic acid by Butyrinvibrio fibrisolvens. J. Biol. Chem. 25: 1350-1354 (1966)
  4. Chin SF, Liu W, Storkson JMS, Ha YL, Pariza MW. Dietary sources of conjugated dienoic isomers of linoleic acid, a newly recognized class of anticarcinogens. J. Food Compos. Anal. 5: 185-197 (1992) https://doi.org/10.1016/0889-1575(92)90037-K
  5. Kovacs EMR, Mela DJ. Metabolically active functional food ingredients for weight control. Obes. Rev. 7: 59-78 (2006) https://doi.org/10.1111/j.1467-789X.2006.00203.x
  6. Liew C, Schut HA, Chin SF, Pariza MW, Dashwood RH. Protection of conjugated linoleic acids against 2-amino-3-methylimidazo[4,5-f] quinoline-induced colon carcinogenesis in the F344 rat: A study of inhibitory mechanisms. Carcinogenesis 16: 3037-3043 (1995) https://doi.org/10.1093/carcin/16.12.3037
  7. Lee KN, Kritchevsky D, Pariza MW. Conjugated linoleic acid and atherosclerosis in rabbits. Atherosclerosis 108: 19-25 (1994) https://doi.org/10.1016/0021-9150(94)90034-5
  8. Houseknecht KL, Vanden Heuvel JP, Moya-Camarena SY, Portocarrero CP, Peck LW, Nickel KP, Belury MA. Dietary conjugated linoleic acid normalizes impaired glucose tolerance in the Zucker diabetic fatty fa/fa rat. Biochem. Bioph. Res. Co. 244: 678-682 (1998) https://doi.org/10.1006/bbrc.1998.8303
  9. Bassaganya-Riera J, Reynolds K, Martino-Catt S, Cui YZ, Hennighausen L, Gonzalez F, Rohrer J, Benninghoff AU, Hontecillas R. Activation of PPAR gamma and delta by conjugated linoleic acid mediates protection from experimental inflammatory bowel disease. Gastroenterology 127: 777-791 (2004) https://doi.org/10.1053/j.gastro.2004.06.049
  10. Miller CC, Park Y, Pariza MW, Cook ME. Feeding conjugated linoleic acid. Biochem. Bioph. Res. Co. 198: 1107-1112 (1994) https://doi.org/10.1006/bbrc.1994.1157
  11. Larsen TM, Toubro S, Astrup A. Efficacy and safety of dietary supplements containing CLA for the treatment of obesity: Evidence from animal and human studies. J. Lipid Res. 44: 2234-2241 (2003) https://doi.org/10.1194/jlr.R300011-JLR200
  12. Whigham LD, Watras AC, Schoeller DA. Efficacy of conjugated linoleic acid for reducing fat mass: A meta-analysis in humans. Am. J. Clin. Nutr. 85: 1203-1211 (2007) https://doi.org/10.1093/ajcn/85.5.1203
  13. Lee CH. Functional food of interest to ASEAN: From traditional experience to modern production and trading. Food Sci. Biotechnol. 13: 390-395 (2004)
  14. Han DS, Kwon EK, Kim DW, Kim YE, Lee CH, Kim IH. Biocellulose reduces body weight gain of rats fed high-fat diet. Food Sci. Biotechnol. 15: 70-76 (2006)
  15. Arthi V. CLA-The Market Shaping Up! Available from http://www.frost.com/ prod/ servlet/market-insight-top.pag?docid=86833605. Accessed Apr. 22, 2008
  16. Food and Drug Administration. Approved healthy functional food in Korea. Available from http://www.kfda.go.kr. Accessed Apr. 22, 2008
  17. Friedewald WT, Levy RI, Fredrickson DS. Estimation of the concentration of low-density lipoprotein cholesterol in plasma, without use of the preparative ultracentrifuge. Clin. Chem. 18: 499-502 (1972)
  18. Nagao K, Yanagita T. Conjugated fatty acids in food and their health benefits. J. Biosci. Bioeng. 100: 152-157 (2005) https://doi.org/10.1263/jbb.100.152
  19. Mougios V, Matsakas A, Petridou A, Ring S, Sagredos A, Melissopoulou A, Tsigilis N, Nikolaidis M. Effect of supplementation with conjugated linoleic acid on human serum lipids and body fat. J. Nutr. Biochem. 12: 585-594 (2001) https://doi.org/10.1016/S0955-2863(01)00177-2
  20. Riserus U, Berglund L, Vessby B. Conjugated linoleic acid (CLA) reduced abdominal adipose tissue in obese middle-aged men with signs of the metabolic syndrome: A randomised controlled trial. Int. J. Obes. Relat. Metab. Disord. 25: 1129-1135 (2001) https://doi.org/10.1038/sj.ijo.0801659
  21. Zambell KL, Keim NL, Van Loan MD, Gale B, Benito P, Kelley DS, Nelson GJ. Conjugated linoleic acid supplementation in humans: Effects on body composition and energy expenditure. Lipids 35: 777-782 (2000) https://doi.org/10.1007/s11745-000-0585-z
  22. West DB, Blohm FY, Truett AA, DeLany JP. Conjugated linoleic acid persistently increases total energy expenditure in AKR/J mice without increasing uncoupling protein gene expression. J. Nutr. 130: 2471-2477 (2000) https://doi.org/10.1093/jn/130.10.2471
  23. Park Y, Storkson JM, Albright KJ, Liu W, Pariza MW. Evidence that the trans-10,cis-12 isomer of conjugated linoleic acid induces body composition changes in mice. Lipids 34: 235-241 (1999) https://doi.org/10.1007/s11745-999-0358-8
  24. Riserus U, Arner P, Brismar K, Vessby B. Treatment with dietary trans10cis12 conjugated linoleic acid causes isomer-specific insulin resistance in obese men with the metabolic syndrome. Diabetes Care 25: 1516-1521 (2002) https://doi.org/10.2337/diacare.25.9.1516
  25. Noone EJ, Roche HM, Nugent AP, Gibney MJ. The effect of dietary supplementation using isomeric blends of conjugated linoleic acid on lipid metabolism in healthy human subjects. Brit. J. Nutr. 88: 243-251 (2002)
  26. Iwata T, Kamegai T, Yamauchi-Sato Y, Ogawa A, Kasai M, Aoyama T, Kondo K. Safety of dietary conjugated linoleic acid (CLA) in a 12-weeks trial in healthy overweight Japanese male volunteers. J. Oleo Sci. 56: 517-525 (2007) https://doi.org/10.5650/jos.56.517
  27. Whigham LD, O'Shea M, Mohede IC, Walaski HP, Atkinson RL. Safety profile of conjugated linoleic acid in a 12-month trial in obese humans. Food Chem. Toxicol. 42: 1701-1709 (2004) https://doi.org/10.1016/j.fct.2004.06.008