Background— Adiponectin is an adipocyte-derived plasma protein that accumulates in the injured artery and has potential antiatherogenic properties. This study was designed to determine whether a decreased plasma adiponectin level (hypoadiponectinemia) can be independently associated with the prevalence of coronary artery disease (CAD). Methods and Results— The consecutive 225 male patients were enrolled from inpatients who underwent coronary angiography. Voluntary blood donors (n=225) matched for age served as controls. Plasma adiponectin levels in the CAD patients were significantly lower than those in the control subjects. Multiple logistic regression analysis including plasma adiponectin level, diabetes mellitus, dyslipidemia, hypertension, smoking habits, and body mass index revealed that hypoadiponectinemia was significantly and independently correlated with CAD (P<0.0088). The entire study population was categorized in quartiles based on the distribution of plasma adiponectin levels. The interquarti...

Association of Hypoadiponectinemia With Coronary Artery Disease in Men

Background Diabetes is a complex, multi-symptomatic disease whose complications drives increases in healthcare costs as the diabetes prevalence grows rapidly world-wide. Real-world electronic health records (EHRs) coupled with patient biospecimens, biological understanding, and technologies can characterize emerging diagnostic autoimmune markers resulting from proteomic discoveries. Methods Circulating autoantibodies for C-terminal fragments of adiponectin receptor 1 (IgG-CTF) were measured by immunoassay to establish the reference range using midpoint samples from 1862 participants in a 20-year observational study of type 2 diabetes and cardiovascular arterial disease (CVAD) conducted by the Fairbanks Institute. The White Blood Cell elastase activity in these patients was assessed using immunoassays for Bikunin and Uristatin. Participants were assigned to four cohorts (healthy, T2D, CV, CV+T2D) based on analysis of their EHRs and the diagnostic biomarkers values and patient status were assessed ten-years post-sample. Results The IgG-CTF reference range was determined to be 75-821 ng/mL and IgG-CTF out-of-range values did not predict cohort or comorbidity as determined from the EHRs at 10 years after sample collection nor did IgG-CTF demonstrate a significant risk for comorbidity or death. Many patients at sample collection time had other conditions (hypertension, hyperlipidemia, or other risk factors) of which only hypertension, Uristatin and Bikunin values correlated with increased risk of developing additional comorbidities (odds ratio 2.58-13.11, P Conclusions This study confirms that retrospective analysis of biorepositories coupled with EHRs can establish reference ranges for novel autoimmune diagnostic markers and provide insights into prediction of specific health outcomes and correlations to other markers.

Utilization of electronic health records for the assessment of adiponectin receptor autoantibodies during the progression of cardio-metabolic comorbidities.

BACKGROUND Diabetes is a complex, multi-symptomatic disease that drives healthcare costs through its complications as the prevalence of this disease grows rapidly world-wide. Real-world electronic health records (EHRs) coupled with patient biospecimens, biological understanding, and technologies can lead to identification of new diagnostic markers. METHODS We analyzed the 20-year EHRs of 1862 participants with midpoint samples (10-year) in an observational study of type 2 diabetes and cardiovascular arterial disease (CVAD) conducted by the Fairbanks Institute to test the diagnostic biomarkers. Participants were assigned to four cohorts (healthy, diabetes, CVAD, CVAD+diabetes) based on EHR data analysis. The immunoassay reference range for circulating autoantibodies against the C-terminal fragment of adiponectin receptor 1 (IgG-CTF) was determined and used to predict outcomes post-sample. RESULTS The IgG-CTF reference range was determined [75–821 ng/mL] and out-of-range values of IgG-CTF values predicted increased likelihood of additional comorbidities and mortality determined from the EHRs 10 years after sample collection. The probability of mortality was lower in patients with elevated IgG-CTF >821 ng/mL [OR 0.49–0.0] and higher in patients with lowered IgG-CTF CONCLUSIONS This study confirms that retrospective analysis of biorepositories coupled with EHRs can provide insight into novel diagnostic markers and the IgG-CTF marker can predict the likelihood of progressing to additional comorbidities or mortality.

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Utilization of Electronic Health Records for the Assessment of Adiponectin Receptor Autoantibodies during the Progression of Cardio-metabolic Comorbidities

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Utilization of Electronic Health Records for the Assessment of Adiponectin Receptor Autoantibodies during the Progression of Cardio-metabolic Comorbidities