Diabetes & Metabolism Journal

Original Article

Pathophysiology
The Phospholipid Linoleoylglycerophosphocholine as a Biomarker of Directly Measured Insulin Resistance: Maria Camila Pérez-Matos, Martha Catalina Morales-Álvarez, Freddy Jean Karlo Toloza, Maria Laura Ricardo-Silgado, Jose Oscar Mantilla-Rivas, Jairo Arturo Pinzón-Cortes, Maritza Perez-Mayorga, Elizabeth Jiménez, Edwin Guevara, Carlos O Mendivil; Diabetes Metab J. 2017;41(6):466-473. Published online November 27, 2017; DOI: https://doi.org/10.4093/dmj.2017.41.6.466

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Background

Plasma concentrations of some lysophospholipids correlate with metabolic alterations in humans, but their potential as biomarkers of insulin resistance (IR) is insufficiently known. We aimed to explore the association between plasma linoleoylglycerophosphocholine (LGPC) and objective measures of IR in adults with different metabolic profiles.

Methods

We studied 62 men and women, ages 30 to 69 years, (29% normal weight, 59% overweight, 12% obese). Participants underwent a 5-point oral glucose tolerance test (5p-OGTT) from which we calculated multiple indices of IR and insulin secretion. Fifteen participants additionally underwent a hyperinsulinemic-euglycemic clamp for estimation of insulin-stimulated glucose disposal. Plasma LGPC was determined using high performance liquid chromatography/time-of-flight mass spectrometry. Plasma LGPC was compared across quartiles defined by the IR indices.

Results

Mean LGPC was 15.4±7.6 ng/mL in women and 14.1±7.3 ng/mL in men. LGPC did not correlate with body mass in-dex, percent body fat, waist circumference, blood pressure, glycosylated hemoglobin, log-triglycerides, or high density lipoprotein cholesterol. Plasma LGPC concentrations was not systematically associated with any of the studied 5p-OGTT-derived IR indices. However, LGPC exhibited a significant negative correlation with glucose disposal in the clamp (Spearman r=−0.56, P=0.029). Despite not being diabetic, participants with higher plasma LGPC exhibited significantly higher post-challenge plasma glucose excursions in the 5p-OGTT (P trend=0.021 for the increase in glucose area under the curve across quartiles of plasma LGPC).

Conclusion

In our sample of Latino adults without known diabetes, LGPC showed potential as a biomarker of IR and impaired glucose metabolism.

Citations

Citations to this article as recorded by

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Saleem Yousf, Hitender S. Batra, Rakesh M. Jha, Devika M. Sardesai, Kalyani Ananthamohan, Jeetender Chugh, Shilpy Sharma
Clinica Chimica Acta.2024; 557: 117857. CrossRef
Comparative Metabolomic Profiling of L-Histidine and NEFA Treatments in Bovine Mammary Epithelial Cells
Wenqiang Sun, Mengze Li, Hanjun Ren, Yang Chen, Wei Zeng, Xiong Tan, Xianbo Jia, Shiyi Chen, Jie Wang, Songjia Lai
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Current Diabetes Reports.2022; 22(3): 95. CrossRef
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Case Report

A Case of Primary Antiphospholipid Syndrome in a Patient with Diabetes Presenting as Foot Ulcer.: Chul Sik Kim, Dae Hoon Song, Jina Park, Jong Suk Park, Joo Young Nam, Young Kim, Hee Jung Yoon, Dol Mi Kim, Soo Jee Yoon, Chul Woo Ahn, Bong Soo Cha, Sung Kil Lim, Kyung Rae Kim, Hyun Chul Lee; Korean Diabetes J. 2003;27(2):165-171. Published online April 1, 2003

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Abstract PDF: Antiphospholipid syndrome is a disorder characterized by recurrent vascular thrombosis, pregnancy loss and thrombocytopenia, and the presence of the lupus anticoagulant or a positive anticardiolipin test. A link of antiphospholipid syndrome to diabetes mellitus has not been established. There have been no reports of large artery thrombosis associated with antiphospholipid syndrome or diabetes mellitus. We present a case of an adult with large artery thrombosis, elevated anticardiolipin antibodies and lupus anticoagulant associated with diabetes. The patient was managed by successful primary percutaneous transluminal angioplasty and stent implantation, with accompanying anticoagulation therapy. To our knowledge, this is the first case where the occluded large artery was treated with primary stent implantation in primary antiphospholipid syndrome with diabetes mellitus

Original Article

Visceral Fat Accumulation and the Fatty Acid Composition of Serum Phospholipids in Middle-Aged Women with Different Degrees of Glucose Tolerance.: Jee Young Yoon, Jong Ho Lee, Yang Cha Lee, Hyun Chul Lee, Kap Bum Huh; Korean Diabetes J. 1997;21(4):444-456. Published online January 1, 2001

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Abstract PDF: BACKGROUND
The aim of this study was to determine visceral fat accumulation and the fatty acid composition of serum phospholipids(PL) in middleaged female volunteers with different degrees of glucose tolerance and to analyze the factors that could be responsible for the observed differences between different degrees of glucose tolerance. METHODS: Anthropometric measurements and computed tomography measurements at umbilicus and thigh midway between the patella and pubis were performed in 125 subjects with normal glucose tolerance(NGT), 62 subjects with impaired glucose tolerance(IGT) and 50 subjects with non-insulin-dependent diabetes mellitus(NIDDM), Normal weight subjects were divided into 3 groups; NGT, IGT and long term NIDDM and overweight subjects into 4 groups; NGT, IGT, newly-onset NIDDM and long-term NIDDM. An oral glucose tolerance test(OGTT), the fatty acid composition of serum PL, fasting serum levels of IGF-1 were determined. RESULTS: Visceral fat area and visceral to subcutaneous fat ratio were higher in overweight control than normal weight control and higher in long-term NIDDM groups than controls. Thigh fat and muscle areas and serum levels of growth hormone and IGF-1 were lower in long-term NIDDM groups than controls. Insulin response area during OGTT was the highest in IGT groups and the lowest in NIDDM groups. The progression from the NGT group to the NGT and NlDDM groups was associated with an increase in glucose and free fatty acid areas during OGTT. Overweight long-term NIDDM group showed the lowest serum level of IGF-1 and the highest areas of glucose and FFA. The low ratio(about 0.64.~0.71) of polyunsaturated to saturated fatty acids in serum PL was found in diabetic groups. Long-term NIDDM groups showed an increase in proportions of palrnitic (C16:0), stearic(C18:0), dihomo-r-linolenic(C20:3w6) and docosapentaenoic(C22:3w6) and and a decrease in linoleic(C18:2w6), a-linolenic(C18;3w3), C20:4/20:3 (5-desaturase activity) and C18:1/18:0(9-desa-turase activity) in their serum PL compared with NGT groups. CONCLUSION: This study suggests that an increase in visceral fat and a decrease in thigh fat and muscle may be related to reduced secretion of growth hormone and insulin in long-term NIDDM subjects, These endocrine perturbations can be exacerbated by the prolonged exposure of hyperglycemia and high serum level of free fatty acid. In addition, lang term NIDDM may decrease 5-desaturase activity and 9-desaturase activity. Thus, the factors regulating fatty acid composition of serum PL in long-term NIDDM are affected by not only dietary fat but stored fat and serum concentrations of glucose and hormones, including insulin.

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