Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study

Michelle L. Asp; Angela L. Collene; Leigh E. Norris; Rachel M. Cole; Michael B. Stout; Szu Yu Tang; Jason C. Hsu; Martha A. Belury

doi:10.1016/j.clnu.2011.01.001

Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study

Michelle L. Asp, Angela L. Collene, Leigh E. Norris, Rachel M. Cole, Michael B. Stout, Szu Yu Tang, Jason C. Hsu, Martha A. Belury

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

Background & aims: Metabolic effects of dietary fat quality in people with type 2 diabetes are not well-understood. The study objective was to evaluate effects of conjugated linoleic acid (CLA) and safflower (SAF) oils on glycemia, blood lipids, and inflammation. The hypothesis we tested is that dietary oils improve glycemia, lipids, and inflammatory markers in a time-dependent way that follows accumulation of linoleic acid and CLA isomers in serum of subjects supplemented with dietary oils. Methods: Fifty-five post-menopausal, obese women with type 2 diabetes enrolled, and 35 completed this randomized, double-masked crossover study. Treatments were 8 g daily of CLA and SAF for 16 weeks each. We used a multiple testing procedure with pre-determined steps analysis to determine the earliest time that a significant effect was detected. Results: CLA did not alter measured metabolic parameters. SAF decreased HbA1c (-0.64 ± 0.18%, p = 0.0007) and C-reactive protein (-13.6 ± 8.2 mg/L, p = 0.0472), increased QUICKI (0.0077 ± 0.0035, p = 0.0146) with a minimum time to effect observed 16 weeks after treatment. SAF increased HDL cholesterol (0.12 ± 0.05 mmol/L, p = 0.0228) with the minimum time to detect an effect of SAF at 12 weeks. The minimum time to detect an increase of c9t11-CLA, t10c12-CLA, and linoleic acid in serum of women supplemented CLA or SAF, respectively, was four weeks. Conclusions: We conclude that 8 g of SAF daily improved glycemia, inflammation, and blood lipids, indicating that small changes in dietary fat quality may augment diabetes treatments to improve risk factors for diabetes-related complications.

Original language	English (US)
Pages (from-to)	443-449
Number of pages	7
Journal	Clinical Nutrition
Volume	30
Issue number	4
DOIs	https://doi.org/10.1016/j.clnu.2011.01.001
State	Published - Aug 2011
Externally published	Yes

Bibliographical note

Funding Information:
The authors would like to thank Yi Liu for her assistance with the statistical analyses, Julia Richardson for editorial assistance with the manuscript, the staff of the Clinical Research Center for their help with data collection, and the study participants for their time and dedication to being a part of the study. This study was funded by an unrestricted gift from Cognis Corporatio n (Monheim, Germany, and Cincinnati, Ohio), the National Center for Research Resources ( UL1RR025755 ), the Clinical Research Center at The Ohio State University (grant M01-RR00034 from the NIH), and the NIH ( R21 AT003520-03S1 ). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health. Funding organizations were not involved in the study design, data collection and analysis, or manuscript preparation.

Keywords

Conjugated linoleic acid
N-6 PUFA
Safflower oil
Type 2 diabetes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access

10.1016/j.clnu.2011.01.001

OpenUrl availability

Full text

Cite this

Asp, M. L., Collene, A. L., Norris, L. E., Cole, R. M., Stout, M. B., Tang, S. Y., Hsu, J. C., & Belury, M. A. (2011). Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study. Clinical Nutrition, 30(4), 443-449. https://doi.org/10.1016/j.clnu.2011.01.001

Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study. / Asp, Michelle L.; Collene, Angela L.; Norris, Leigh E. et al.
In: Clinical Nutrition, Vol. 30, No. 4, 08.2011, p. 443-449.

Research output: Contribution to journal › Article › peer-review

Asp, ML, Collene, AL, Norris, LE, Cole, RM, Stout, MB, Tang, SY, Hsu, JC & Belury, MA 2011, 'Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study', Clinical Nutrition, vol. 30, no. 4, pp. 443-449. https://doi.org/10.1016/j.clnu.2011.01.001

@article{91a083c0adf04715a93c144ca8793d3d,

title = "Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study",

abstract = "Background & aims: Metabolic effects of dietary fat quality in people with type 2 diabetes are not well-understood. The study objective was to evaluate effects of conjugated linoleic acid (CLA) and safflower (SAF) oils on glycemia, blood lipids, and inflammation. The hypothesis we tested is that dietary oils improve glycemia, lipids, and inflammatory markers in a time-dependent way that follows accumulation of linoleic acid and CLA isomers in serum of subjects supplemented with dietary oils. Methods: Fifty-five post-menopausal, obese women with type 2 diabetes enrolled, and 35 completed this randomized, double-masked crossover study. Treatments were 8 g daily of CLA and SAF for 16 weeks each. We used a multiple testing procedure with pre-determined steps analysis to determine the earliest time that a significant effect was detected. Results: CLA did not alter measured metabolic parameters. SAF decreased HbA1c (-0.64 ± 0.18%, p = 0.0007) and C-reactive protein (-13.6 ± 8.2 mg/L, p = 0.0472), increased QUICKI (0.0077 ± 0.0035, p = 0.0146) with a minimum time to effect observed 16 weeks after treatment. SAF increased HDL cholesterol (0.12 ± 0.05 mmol/L, p = 0.0228) with the minimum time to detect an effect of SAF at 12 weeks. The minimum time to detect an increase of c9t11-CLA, t10c12-CLA, and linoleic acid in serum of women supplemented CLA or SAF, respectively, was four weeks. Conclusions: We conclude that 8 g of SAF daily improved glycemia, inflammation, and blood lipids, indicating that small changes in dietary fat quality may augment diabetes treatments to improve risk factors for diabetes-related complications.",

keywords = "Conjugated linoleic acid, N-6 PUFA, Safflower oil, Type 2 diabetes",

author = "Asp, {Michelle L.} and Collene, {Angela L.} and Norris, {Leigh E.} and Cole, {Rachel M.} and Stout, {Michael B.} and Tang, {Szu Yu} and Hsu, {Jason C.} and Belury, {Martha A.}",

note = "Funding Information: The authors would like to thank Yi Liu for her assistance with the statistical analyses, Julia Richardson for editorial assistance with the manuscript, the staff of the Clinical Research Center for their help with data collection, and the study participants for their time and dedication to being a part of the study. This study was funded by an unrestricted gift from Cognis Corporatio n (Monheim, Germany, and Cincinnati, Ohio), the National Center for Research Resources ( UL1RR025755 ), the Clinical Research Center at The Ohio State University (grant M01-RR00034 from the NIH), and the NIH ( R21 AT003520-03S1 ). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health. Funding organizations were not involved in the study design, data collection and analysis, or manuscript preparation.",

year = "2011",

month = aug,

doi = "10.1016/j.clnu.2011.01.001",

language = "English (US)",

volume = "30",

pages = "443--449",

journal = "Clinical Nutrition",

issn = "0261-5614",

publisher = "Churchill Livingstone",

number = "4",

}

TY - JOUR

T1 - Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes

T2 - A randomized, double-masked, crossover study

AU - Asp, Michelle L.

AU - Collene, Angela L.

AU - Norris, Leigh E.

AU - Cole, Rachel M.

AU - Stout, Michael B.

AU - Tang, Szu Yu

AU - Hsu, Jason C.

AU - Belury, Martha A.

N1 - Funding Information: The authors would like to thank Yi Liu for her assistance with the statistical analyses, Julia Richardson for editorial assistance with the manuscript, the staff of the Clinical Research Center for their help with data collection, and the study participants for their time and dedication to being a part of the study. This study was funded by an unrestricted gift from Cognis Corporatio n (Monheim, Germany, and Cincinnati, Ohio), the National Center for Research Resources ( UL1RR025755 ), the Clinical Research Center at The Ohio State University (grant M01-RR00034 from the NIH), and the NIH ( R21 AT003520-03S1 ). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health. Funding organizations were not involved in the study design, data collection and analysis, or manuscript preparation.

PY - 2011/8

Y1 - 2011/8

N2 - Background & aims: Metabolic effects of dietary fat quality in people with type 2 diabetes are not well-understood. The study objective was to evaluate effects of conjugated linoleic acid (CLA) and safflower (SAF) oils on glycemia, blood lipids, and inflammation. The hypothesis we tested is that dietary oils improve glycemia, lipids, and inflammatory markers in a time-dependent way that follows accumulation of linoleic acid and CLA isomers in serum of subjects supplemented with dietary oils. Methods: Fifty-five post-menopausal, obese women with type 2 diabetes enrolled, and 35 completed this randomized, double-masked crossover study. Treatments were 8 g daily of CLA and SAF for 16 weeks each. We used a multiple testing procedure with pre-determined steps analysis to determine the earliest time that a significant effect was detected. Results: CLA did not alter measured metabolic parameters. SAF decreased HbA1c (-0.64 ± 0.18%, p = 0.0007) and C-reactive protein (-13.6 ± 8.2 mg/L, p = 0.0472), increased QUICKI (0.0077 ± 0.0035, p = 0.0146) with a minimum time to effect observed 16 weeks after treatment. SAF increased HDL cholesterol (0.12 ± 0.05 mmol/L, p = 0.0228) with the minimum time to detect an effect of SAF at 12 weeks. The minimum time to detect an increase of c9t11-CLA, t10c12-CLA, and linoleic acid in serum of women supplemented CLA or SAF, respectively, was four weeks. Conclusions: We conclude that 8 g of SAF daily improved glycemia, inflammation, and blood lipids, indicating that small changes in dietary fat quality may augment diabetes treatments to improve risk factors for diabetes-related complications.

AB - Background & aims: Metabolic effects of dietary fat quality in people with type 2 diabetes are not well-understood. The study objective was to evaluate effects of conjugated linoleic acid (CLA) and safflower (SAF) oils on glycemia, blood lipids, and inflammation. The hypothesis we tested is that dietary oils improve glycemia, lipids, and inflammatory markers in a time-dependent way that follows accumulation of linoleic acid and CLA isomers in serum of subjects supplemented with dietary oils. Methods: Fifty-five post-menopausal, obese women with type 2 diabetes enrolled, and 35 completed this randomized, double-masked crossover study. Treatments were 8 g daily of CLA and SAF for 16 weeks each. We used a multiple testing procedure with pre-determined steps analysis to determine the earliest time that a significant effect was detected. Results: CLA did not alter measured metabolic parameters. SAF decreased HbA1c (-0.64 ± 0.18%, p = 0.0007) and C-reactive protein (-13.6 ± 8.2 mg/L, p = 0.0472), increased QUICKI (0.0077 ± 0.0035, p = 0.0146) with a minimum time to effect observed 16 weeks after treatment. SAF increased HDL cholesterol (0.12 ± 0.05 mmol/L, p = 0.0228) with the minimum time to detect an effect of SAF at 12 weeks. The minimum time to detect an increase of c9t11-CLA, t10c12-CLA, and linoleic acid in serum of women supplemented CLA or SAF, respectively, was four weeks. Conclusions: We conclude that 8 g of SAF daily improved glycemia, inflammation, and blood lipids, indicating that small changes in dietary fat quality may augment diabetes treatments to improve risk factors for diabetes-related complications.

KW - Conjugated linoleic acid

KW - N-6 PUFA

KW - Safflower oil

KW - Type 2 diabetes

UR - http://www.scopus.com/inward/record.url?scp=79960157033&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960157033&partnerID=8YFLogxK

U2 - 10.1016/j.clnu.2011.01.001

DO - 10.1016/j.clnu.2011.01.001

M3 - Article

C2 - 21295383

AN - SCOPUS:79960157033

SN - 0261-5614

VL - 30

SP - 443

EP - 449

JO - Clinical Nutrition

JF - Clinical Nutrition

IS - 4

ER -

Time-dependent effects of safflower oil to improve glycemia, inflammation and blood lipids in obese, post-menopausal women with type 2 diabetes: A randomized, double-masked, crossover study

Abstract

Bibliographical note

Keywords

UN SDGs

Access

OpenUrl availability

Other files and links

Fingerprint

Cite this