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Increased visceral fat and impaired glucose tolerance predict the increased risk of metabolic syndrome in Japanese middle-aged men.
Exp Clin Endocrinol Diabetes. 2005 Jun; 113(6):334-9.EC

Abstract

BACKGROUND

Impaired glucose tolerance (IGT) represents a stage of pre-diabetes and is a risk factor for future cardiovascular disease (CVD) which is a major cause of death in type 2 diabetes. The metabolic risk factors such as elevated blood pressure (elevated BP), abdominal obesity, dyslipidemia (elevated levels of total triglycerides [TG] and low levels of HDL cholesterol), and hyperglycemia precede the onset of the metabolic syndrome that increases the risk for CVD. This clustering is commonly associated with pre-diabetic hyperinsulinemia and it reflects peripheral insulin resistance. The present study documented that a visceral fat area (VFA) >/= 100 cm (2) can replace waist-to-hip ratios (WHR) associated with IGT or IFG/IGT as a critical risk for the development of the metabolic syndrome in Japanese middle-aged men.

MATERIALS AND METHODS

A total of 575 middle-aged Japanese men with fasting plasma glucose levels of 6.1 - 6.9 mmol/l (impaired fasting glucose; IFG) were enrolled in the study. After a 75-g oral glucose tolerance test (OGTT), blood samples were collected 0 - 2 h later for determination of plasma glucose, insulin concentrations and other variables. Based on the results of an OGTT, the subjects were subgrouped into categories of glucose tolerance for further study.

RESULTS

Subjects with IGT or IFG/IGT had significantly higher levels of metabolic abnormalities such as high BMI, increased AUC glucose, elevated HbA1c, high VFA, elevated BP, and increased TG levels when compared to NGT (normal glucose tolerance) (p < 0.001). Compensatory hyper-secretion of insulin was seen in all pre-diabetic subjects, and was higher in IFG/IGT subjects (681 +/- 33 pmol . h/l) than NGT (480 +/- 22 pmol . h/l) (p < 0.01). The metabolic clustering including abnormal VFA, TG, HDL-C, and BP was strongly associated with the development of metabolic syndrome. Interestingly, VFA >/= 100 cm (2) adjusted for the Japanese correlates strongly with the development of the metabolic syndrome in preclinical IGT or IFG/IGT subjects, with odds ratios of 2.7 and higher.

CONCLUSION

VFA >/= 100 cm (2) strongly correlates with prediabetic IGT or IFG/IGT which is possibly associated with underlying insulin resistance, and is a critical risk factor linked to the development of metabolic syndrome in Japanese middle-aged subjects with IGT or IFG/IGT.

Authors+Show Affiliations

Department of Internal Medicine, National Hospital Organization, Utsunomiya National Hospital, Utsunomiya, Japan. moriyutukajp@yahoo.co.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15977101

Citation

Mori, Y, et al. "Increased Visceral Fat and Impaired Glucose Tolerance Predict the Increased Risk of Metabolic Syndrome in Japanese Middle-aged Men." Experimental and Clinical Endocrinology & Diabetes : Official Journal, German Society of Endocrinology [and] German Diabetes Association, vol. 113, no. 6, 2005, pp. 334-9.
Mori Y, Hoshino K, Yokota K, et al. Increased visceral fat and impaired glucose tolerance predict the increased risk of metabolic syndrome in Japanese middle-aged men. Exp Clin Endocrinol Diabetes. 2005;113(6):334-9.
Mori, Y., Hoshino, K., Yokota, K., Yokose, T., & Tajima, N. (2005). Increased visceral fat and impaired glucose tolerance predict the increased risk of metabolic syndrome in Japanese middle-aged men. Experimental and Clinical Endocrinology & Diabetes : Official Journal, German Society of Endocrinology [and] German Diabetes Association, 113(6), 334-9.
Mori Y, et al. Increased Visceral Fat and Impaired Glucose Tolerance Predict the Increased Risk of Metabolic Syndrome in Japanese Middle-aged Men. Exp Clin Endocrinol Diabetes. 2005;113(6):334-9. PubMed PMID: 15977101.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Increased visceral fat and impaired glucose tolerance predict the increased risk of metabolic syndrome in Japanese middle-aged men. AU - Mori,Y, AU - Hoshino,K, AU - Yokota,K, AU - Yokose,T, AU - Tajima,N, PY - 2005/6/25/pubmed PY - 2005/10/5/medline PY - 2005/6/25/entrez SP - 334 EP - 9 JF - Experimental and clinical endocrinology & diabetes : official journal, German Society of Endocrinology [and] German Diabetes Association JO - Exp. Clin. Endocrinol. Diabetes VL - 113 IS - 6 N2 - BACKGROUND: Impaired glucose tolerance (IGT) represents a stage of pre-diabetes and is a risk factor for future cardiovascular disease (CVD) which is a major cause of death in type 2 diabetes. The metabolic risk factors such as elevated blood pressure (elevated BP), abdominal obesity, dyslipidemia (elevated levels of total triglycerides [TG] and low levels of HDL cholesterol), and hyperglycemia precede the onset of the metabolic syndrome that increases the risk for CVD. This clustering is commonly associated with pre-diabetic hyperinsulinemia and it reflects peripheral insulin resistance. The present study documented that a visceral fat area (VFA) >/= 100 cm (2) can replace waist-to-hip ratios (WHR) associated with IGT or IFG/IGT as a critical risk for the development of the metabolic syndrome in Japanese middle-aged men. MATERIALS AND METHODS: A total of 575 middle-aged Japanese men with fasting plasma glucose levels of 6.1 - 6.9 mmol/l (impaired fasting glucose; IFG) were enrolled in the study. After a 75-g oral glucose tolerance test (OGTT), blood samples were collected 0 - 2 h later for determination of plasma glucose, insulin concentrations and other variables. Based on the results of an OGTT, the subjects were subgrouped into categories of glucose tolerance for further study. RESULTS: Subjects with IGT or IFG/IGT had significantly higher levels of metabolic abnormalities such as high BMI, increased AUC glucose, elevated HbA1c, high VFA, elevated BP, and increased TG levels when compared to NGT (normal glucose tolerance) (p < 0.001). Compensatory hyper-secretion of insulin was seen in all pre-diabetic subjects, and was higher in IFG/IGT subjects (681 +/- 33 pmol . h/l) than NGT (480 +/- 22 pmol . h/l) (p < 0.01). The metabolic clustering including abnormal VFA, TG, HDL-C, and BP was strongly associated with the development of metabolic syndrome. Interestingly, VFA >/= 100 cm (2) adjusted for the Japanese correlates strongly with the development of the metabolic syndrome in preclinical IGT or IFG/IGT subjects, with odds ratios of 2.7 and higher. CONCLUSION: VFA >/= 100 cm (2) strongly correlates with prediabetic IGT or IFG/IGT which is possibly associated with underlying insulin resistance, and is a critical risk factor linked to the development of metabolic syndrome in Japanese middle-aged subjects with IGT or IFG/IGT. SN - 0947-7349 UR - https://www.unboundmedicine.com/medline/citation/15977101/Increased_visceral_fat_and_impaired_glucose_tolerance_predict_the_increased_risk_of_metabolic_syndrome_in_Japanese_middle_aged_men_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2005-865680 DB - PRIME DP - Unbound Medicine ER -