A method comparison of total and HMW adiponectin: HMW/total adiponectin ratio varies versus total adiponectin, independent of clinical condition

2017 ◽  
Vol 465 ◽  
pp. 30-33 ◽  
Author(s):  
Merel van Andel ◽  
Madeleine L. Drent ◽  
Antonius E. van Herwaarden ◽  
Mariëtte T. Ackermans ◽  
Annemieke C. Heijboer
Keyword(s):  
Clinical Condition ◽  
Method Comparison ◽  
Hmw Adiponectin ◽  
Total Adiponectin

scholarly journals Effects of Delayed Sample Processing on Determination of Total and High Molecular Weight (HMW) Adiponectin in Serum and Plasma: A Pilot Study

2016 ◽  
Vol 8 (3) ◽  
pp. 19
Author(s):  
Choaping Ng ◽  
Felicity J Rose ◽  
Sahar Keshvari ◽  
Marina M Reeves ◽  
Goce Dimeski ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Pilot Study ◽  
High Molecular Weight ◽  
Accurate Determination ◽  
Mean Difference ◽  
Serum Samples ◽  
Blood Samples ◽  
Hmw Adiponectin ◽  
Total Adiponectin

<p>Adiponectin is a beneficial adipocyte-secreted hormone, which circulates in a variety of multimeric forms termed low and high molecular weight (LMW/HMW). Effectiveness of clinical therapeutic trials which target adiponectin rely on accurate determination of circulating total and HMW adiponectin levels but the accuracy may be influenced by variations in sample handling processes. The aim of this pilot study was to investigate the effects of delayed processing of blood samples on the concentration of total and HMW adiponectin.</p><p>Materials and Methods: Fasting blood samples were collected for analysis of total and HMW adiponectin concentrations in EDTA plasma and serum from eight healthy participants.  Samples were centrifuged post 15 min storage at 4<sup>o</sup>C as the comparative ‘ideal’ method or after up to 72 h of refrigerated storage or 6 h at room temperature. Total and HMW adiponectin concentrations were measured by ELISA.</p><p>Results: Under ideal handling conditions measurements of total and HMW adiponectin concentrations were significantly higher in serum than in plasma (mean difference: -1.3 µg/mL [95% CI: -1.6, -1.0], p&lt;0.001; and, -0.6 µg/mL [95% CI: -0.7, -0.5], p&lt;0.001, respectively).  Storage of blood samples at 4<sup>o</sup>C for 72 h resulted in significant reductions in concentration of total adiponectin in serum (mean difference: -1.4 µg/mL [95% CI: -2.0, -0.8], p=0.001) and HMW adiponectin in plasma (mean difference: -0.6 µg/mL [95%CI: -0.9, -0.2], p=0.007), compared with ideal conditions.  Further analysis of serum samples showed a significant decrease in total adiponectin concentration after 6 h storage at 4<sup>o</sup>C (mean difference: -1.4 µg/mL [95% CI: -2.0, -0.8], p=0.001) compared with ideal conditions.</p><p>Conclusions: Delayed processing of samples may have differential effects on the concentration of total and HMW adiponectin in serum or plasma. Larger studies are warranted for clinical intervention trials.</p>

scholarly journals Linoleic Acid–Rich Oil Supplementation Increases Total and High-Molecular-Weight Adiponectin and Alters Plasma Oxylipins in Postmenopausal Women with Metabolic Syndrome

2020 ◽  
Vol 4 (9) ◽  
Author(s):  
Rachel M Cole ◽  
Sarah Puchala ◽  
Jia-Yu Ke ◽  
Mahmoud Abdel-Rasoul ◽  
Kristin Harlow ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Molecular Weight ◽  
Linoleic Acid ◽  
High Molecular Weight ◽  
Oil Consumption ◽  
Open Label ◽  
High Molecular Weight Adiponectin ◽  
Markers Of Inflammation ◽  
Hmw Adiponectin ◽  
Total Adiponectin

ABSTRACT Background The onset of menopause increases the risk of metabolic syndrome (MetS). Adiponectin is an adipokine associated with insulin sensitivity that is lower in people with MetS. Supplementing diets with linoleic acid (LA)-rich oil increased adiponectin concentrations and improved glucose control in women with type 2 diabetes. The effect of LA on adipokines, especially total and the bioactive form of adiponectin, high-molecular-weight (HMW) adiponectin, in women with MetS is unknown. Objectives The aim of this study was to explore the effect of supplementation of the diet with an oil rich in LA on adipokines in women with MetS. The effect of the LA-rich oil (LA-oil) on oxylipins, key metabolites that may influence inflammation and metabolism, was also explored. Methods In this open-label single-arm pilot study, 18 postmenopausal nondiabetic women with MetS enrolled in a 2-phase study were instructed to consume LA-rich vegetable oil (10 mL/d) as part of their habitual diets. Women consumed an oleic acid–rich oil (OA-oil) for 4 wk followed by an LA-oil for 16 wk. Fasting concentrations of adipokines, fatty acids, oxylipins, and markers of glycemia and inflammation were measured. Results After 4 wk of OA-oil consumption, fasting glucose and total adiponectin concentrations decreased whereas fasting C-reactive protein increased. After 16 wk of LA-oil supplementation total and HMW adiponectin and plasma oxylipins increased. Markers of inflammation and glycemia were unchanged after LA-oil consumption. Conclusions Supplementation with LA-oil increased total and HMW adiponectin concentrations and altered plasma oxylipin profiles. Larger studies are needed to elucidate the links between these changes and MetS. This trial was registered at clinicaltrials.gov as NCT02063165.

scholarly journals Coffee consumption and plasma biomarkers of metabolic and inflammatory pathways in US health professionals

2019 ◽  
Vol 109 (3) ◽  
pp. 635-647 ◽  
Author(s):  
Dong Hang ◽  
Ane Sørlie Kværner ◽  
Wenjie Ma ◽  
Yang Hu ◽  
Fred K Tabung ◽  
...  
Keyword(s):  
Health Professionals ◽  
Coffee Consumption ◽  
Blood Draw ◽  
Plasma Biomarkers ◽  
Inflammatory Pathways ◽  
Hmw Adiponectin ◽  
Total Adiponectin ◽  
Decaffeinated Coffee ◽  
Free Estradiol ◽  
Igfbp 3

ABSTRACT Background Coffee consumption has been linked to lower risk of various health outcomes. However, the biological pathways mediating the associations remain poorly understood. Objectives The aim of this study was to assess the association between coffee consumption and concentrations of plasma biomarkers in key metabolic and inflammatory pathways underlying common chronic diseases. Methods We investigated the associations of total, caffeinated, and decaffeinated coffee consumption with 14 plasma biomarkers, including C-peptide, insulin-like growth factor 1 (IGF-1), IGF binding protein (IGFBP) 1, IGFBP-3, estrone, total and free estradiol, total and free testosterone, sex hormone–binding globulin (SHBG), total adiponectin, high-molecular-weight (HMW) adiponectin, leptin, C-reactive protein (CRP), interleukin 6 (IL-6), and soluble tumor necrosis factor receptor 2 (sTNFR-2). Data were derived from 2 cohorts of 15,551 women (Nurses’ Health Study) and 7397 men (Health Professionals Follow-Up Study), who provided detailed dietary data before blood draw and were free of diabetes, cardiovascular disease, or cancer at the time of blood draw. Multivariable linear regression was used to calculate the percentage difference of biomarker concentrations comparing coffee drinkers with nondrinkers, after adjusting for a variety of demographic, clinical, and lifestyle factors. Results Compared with nondrinkers, participants who drank ≥4 cups of total coffee/d had lower concentrations of C-peptide (−8.7%), IGFBP-3 (−2.2%), estrone (−6.4%), total estradiol (−5.7%), free estradiol (−8.1%), leptin (−6.4%), CRP (−16.6%), IL-6 (−8.1%), and sTNFR-2 (−5.8%) and higher concentrations of SHBG (5.0%), total testosterone (7.3% in women and 5.3% in men), total adiponectin (9.3%), and HMW adiponectin (17.2%). The results were largely similar for caffeinated and decaffeinated coffee. Conclusion Our data indicate that coffee consumption is associated with favorable profiles of numerous biomarkers in key metabolic and inflammatory pathways. This trial was registered at clinicaltrials.gov as NCT03419455.

Measurement of high-molecular-weight adiponectin is not useful in assessing coronary stenosis

2012 ◽  
Vol 50 (4) ◽  
Author(s):  
Takuya Imatoh ◽  
Motonobu Miyazaki ◽  
Ken Kadowaki ◽  
Shinichi Tanihara ◽  
Chinami Akashi ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Coronary Stenosis ◽  
Active Form ◽  
Surrogate Marker ◽  
Area Under The Curve ◽  
High Molecular Weight Adiponectin ◽  
Cross Sectional ◽  
Hmw Adiponectin ◽  
Total Adiponectin

AbstractIn many studies, high-molecular-weight (HMW) adiponectin has been considered the active form of adiponectin. However, whether HMW adiponectin is a good surrogate marker for coronary artery disease still needs to be elucidated.We conducted a hospital-based cross-sectional study to examine the relationship between total, HMW or non-HMW adiponectin concentrations and coronary stenosis in 83 male patients and 138 male controls.Patients with coronary stenosis had significantly lower total adiponectin concentrations compared with controls. Non-HMW adiponectin concentrations in cases were significantly lower than the controls. However, there were no significant differences between cases and controls in HMW adiponectin concentrations. From the receiver operating characteristic (ROC) analysis, the area under the curve (AUC) for total and non-HMW adiponectin was significantly larger than that for HMW adiponectin concentrations. Of the three models, that for non-HMW adiponectin showed the largest AUC (total adiponectin 0.74, HMW adiponectin 0.54, and non-HMW adiponectin 0.79).Despite associations between total adiponectin levels and coronary stenosis, our data go against any apparent association between HMW adiponectin concentrations and coronary stenosis.

scholarly journals Distribution of adiponectin multimeric forms in Chinese women with polycystic ovary syndrome and their relation to insulin resistance

2010 ◽  
Vol 163 (3) ◽  
pp. 399-406 ◽  
Author(s):  
Tao Tao ◽  
Edmond P Wickham ◽  
WuQiang Fan ◽  
Jiejin Yang ◽  
Wei Liu
Keyword(s):  
Insulin Resistance ◽  
Molecular Weight ◽  
Polycystic Ovary Syndrome ◽  
Chinese Women ◽  
Polycystic Ovary ◽  
Model Assessment ◽  
Ovary Syndrome ◽  
Hmw Adiponectin ◽  
Total Adiponectin ◽  
Normal Women

ObjectiveAdiponectin, an abundant adipokine with insulin-sensitizing properties, exists in different multimeric forms, including low-molecular weight, medium-molecular weight, and high-molecular weight (HMW) species. Alterations in the distribution of adiponectin multimers and the relationship between adiponectin multimers and insulin resistance (IR) in women with polycystic ovary syndrome (PCOS) remain unclear. The objective of this study was to compare adiponectin multimerization status and estimate insulin sensitivity in Chinese women with PCOS compared with age- and body mass index (BMI)-matched controls.MethodsCross-sectional study involving 64 Chinese women with PCOS and 59 normal women. Circulating total adiponectin and its multimeric forms were determined by ELISA, and IR was estimated using the homeostasis model assessment IR index (HOMA-IR).ResultsAfter controlling for BMI status, levels of both total and HMW adiponectin were significantly lower in women with PCOS compared with normal women (P<0.05). Furthermore, HMW adiponectin provided a stronger contribution to models predicting IR than total adiponectin. Lastly, decreased HMW adiponectin was associated with increased HOMA-IR in both normal and PCOS women, and this association was independent of both overall adiposity and visceral adiposity.ConclusionLevels of both total and HMW adiponectin were decreased in Chinese women with PCOS compared with normal control women, and the differences in HMW adiponectin persisted after controlling for BMI. Furthermore, HMW adiponectin is a stronger predictor of IR than total adiponectin in both women with PCOS and normal women.

scholarly journals Adiponectin in mice with altered GH action: links to insulin sensitivity and longevity?

2012 ◽  
Vol 216 (3) ◽  
pp. 363-374 ◽  
Author(s):  
Ellen R Lubbers ◽  
Edward O List ◽  
Adam Jara ◽  
Lucila Sackman-Sala ◽  
Jose Cordoba-Chacon ◽  
...  
Keyword(s):  
Gene Expression ◽  
Molecular Weight ◽  
Insulin Sensitivity ◽  
Negative Association ◽  
Adiponectin Gene ◽  
Protein Levels ◽  
Adult Mice ◽  
Hmw Adiponectin ◽  
Total Adiponectin ◽  
Mouse Lines

Adiponectin is positively correlated with longevity and negatively correlated with many obesity-related diseases. While there are several circulating forms of adiponectin, the high-molecular-weight (HMW) version has been suggested to have the predominant bioactivity. Adiponectin gene expression and cognate serum protein levels are of particular interest in mice with altered GH signaling as these mice exhibit extremes in obesity that are positively associated with insulin sensitivity and lifespan as opposed to the typical negative association of these factors. While a few studies have reported total adiponectin levels in young adult mice with altered GH signaling, much remains unresolved, including changes in adiponectin levels with advancing age, proportion of total adiponectin in the HMW form, adipose depot of origin, and differential effects of GH vs IGF1. Therefore, the purpose of this study was to address these issues using assorted mouse lines with altered GH signaling. Our results show that adiponectin is generally negatively associated with GH activity, regardless of age. Further, the amount of HMW adiponectin is consistently linked with the level of total adiponectin and not necessarily with previously reported lifespan or insulin sensitivity of these mice. Interestingly, circulating adiponectin levels correlated strongly with inguinal fat mass, implying that the effects of GH on adiponectin are depot specific. Interestingly, rbGH, but not IGF1, decreased circulating total and HMW adiponectin levels. Taken together, these results fill important gaps in the literature related to GH and adiponectin and question the frequently reported associations of total and HMW adiponectin with insulin sensitivity and longevity.

scholarly journals Relationships between serum adiponectin levels versus bone mineral density, bone metabolic markers, and vertebral fractures in type 2 diabetes mellitus

2009 ◽  
Vol 160 (2) ◽  
pp. 265-273 ◽  
Author(s):  
Ippei Kanazawa ◽  
Toru Yamaguchi ◽  
Masahiro Yamamoto ◽  
Mika Yamauchi ◽  
Shozo Yano ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Type 2 Diabetes ◽  
Vertebral Fractures ◽  
Serum Adiponectin ◽  
Mineral Density ◽  
Hmw Adiponectin ◽  
Total Adiponectin ◽  
Menopausal Women ◽  
Post Menopausal

BackgroundAlthough, adiponectin might be associated with bone metabolism, the relationships between serum adiponectin and bone mineral density (BMD) as well as vertebral fracture in type 2 diabetes are still unclear.Objective and methodsWe investigated the relationships between each of serum total and high molecular weight (HMW) adiponectin versus BMD, bone markers, and the presence of vertebral fractures in a total of 231 men and 170 post-menopausal women with type 2 diabetes.ResultsMultiple regression analysis adjusted for age, duration of diabetes, BMI, serum creatinine, and HbA1c showed that serum total adiponectin was negatively correlated with BMD at the total, lumbar spine, and femoral neck (r=−0.165, P<0.05; r=−0.187, P<0.05; and r=−0.136, P<0.05 respectively) and positively with urinary N-terminal cross-linked telopeptide of type-I collagen in men (r=0.148, P<0.05), and that serum HMW adiponectin was negatively correlated with BMD at the lumbar spine (r=−0.146, P<0.05). Multivariate logistic regression analysis adjusted for the parameters described above showed that total adiponectin was associated with the presence of vertebral fractures in men (odds ratio (OR)=1.396, 95% confidential interval (CI) 1.020–1.911 per s.d. increase, P<0.05), and both total and HMW adiponectin were associated with moderate or severe vertebral fractures (OR=1.709, 95% CI 1.048–2.787 per s.d. increase, P<0.05 and OR=1.810, 95% CI 1.112–2.946 per s.d. increase, P<0.05 respectively), but not in post-menopausal women.ConclusionsSerum adiponectin could be associated with BMD and turnover and clinically useful for assessing the risk of vertebral fractures in type 2 diabetic men.

The effect of 25-hydroxyvitamin D on insulin sensitivity in obesity: is it mediated via adiponectin?

2013 ◽  
Vol 91 (6) ◽  
pp. 496-501 ◽  
Author(s):  
Olivia R.L. Wright ◽  
Ingrid J. Hickman ◽  
William G. Petchey ◽  
Clair M. Sullivan ◽  
Cynthia Ong ◽  
...  
Keyword(s):  
Insulin Sensitivity ◽  
Waist Circumference ◽  
Hdl Cholesterol ◽  
Cross Sectional ◽  
Cholesterol Ratio ◽  
Hydroxyvitamin D ◽  
Enhanced Production ◽  
Hmw Adiponectin ◽  
Total Adiponectin ◽  
25 Hydroxyvitamin D

There has been substantial recent interest in using vitamin D to improve insulin sensitivity and preventing/delaying diabetes in those at risk. There is little consensus on the physiological mechanisms and whether the association is direct or indirect through enhanced production of insulin-sensitising chemicals, including adiponectin. We examined cross-sectional associations between serum 25-hydroxyvitamin D (25(OH)D) and insulin sensitivity (Matsuda index), parathyroid hormone (PTH), waist circumference, body mass index (BMI), triglycerides (TG), total and high molecular weight (HMW) adiponectin, HMW : total adiponectin ratio (HMW : total adiponectin), and total cholesterol : HDL cholesterol ratio (TC:HDL cholesterol) in 137 Caucasian adults of mean age 43.3 ± 8.3 years and BMI 38.8 ± 6.9 kg/m2. Total adiponectin (standardised β = 0.446; p < 0.001), waist circumference (standardised β = –0.216; p < 0.05), BMI (standardised β = –0.212; p < 0.05), and age (standardised β = –0.298; p < 0.001) were independently associated with insulin sensitivity. Serum 25(OH)D (standardised β = 0.114; p = 0.164) was not associated with insulin sensitivity, total or HMW adiponectin, HMW : total adiponectin, or lipids. Our results provide the novel finding that 25(OH)D is not associated with HMW adiponectin or HMW : total adiponectin in nondiabetic, obese adults and support the lack of association between 25(OH)D and lipids noted by others in similar groups of patients.

scholarly journals Modulation of Adiponectin and Leptin during Refeeding of Female Anorexia Nervosa Patients

2007 ◽  
Vol 92 (5) ◽  
pp. 1843-1847 ◽  
Author(s):  
Dalit Modan-Moses ◽  
Daniel Stein ◽  
Clara Pariente ◽  
Amit Yaroslavsky ◽  
Anka Ram ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Body Mass Index ◽  
Anorexia Nervosa ◽  
Insulin Sensitivity ◽  
Body Mass ◽  
Female Adolescent ◽  
Model Assessment ◽  
Homeostasis Model Assessment ◽  
Hmw Adiponectin ◽  
Total Adiponectin

Abstract Context: Several studies assessed adiponectin levels in anorexia nervosa (AN) patients, however, data regarding the dynamics of changes in adiponectin levels during refeeding of these patients is limited and contradicting. Objective: Our objective was to assess adiponectin levels and the distribution of its different isoforms in AN patients before and after long-term refeeding, and to relate them to alterations in body mass index, leptin, insulin sensitivity, and additional endocrine parameters. Design, Setting, and Participants: We conducted a longitudinal controlled study of 38 female adolescent malnourished AN inpatients, with 13 young, lean, healthy women serving as controls. Blood samples were obtained upon admission and thereafter at 1, 3, and 5 months (at target weight). Main Outcome Measures: Changes in body mass index, leptin, adiponectin, insulin sensitivity, and adiponectin multimeric forms were measured. Results: At admission, leptin levels of AN patients were significantly lower, whereas insulin sensitivity (assessed by homeostasis model assessment-insulin resistance), adiponectin levels, and the ratio of high molecular weight (HMW) adiponectin to total adiponectin were significantly higher compared with controls. During weight recovery, leptin levels and homeostasis model assessment-insulin resistance increased significantly, whereas adiponectin and HMW adiponectin/total adiponectin ratio decreased significantly, to levels similar to controls. An initial increase in adiponectin levels was observed after 1 month of refeeding. There was no correlation between adiponectin and either T4 or cortisol levels. Conclusions: Our study demonstrates hyperadiponectinemia, increased adiponectin HMW isoform, and increased insulin sensitivity in adolescent AN female patients and reversal of these findings with weight rehabilitation. We hypothesize that increased adiponectin levels may have a protective role in maintaining energy homeostasis during extreme malnourishment.

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