title: Associations between inflammation-related biomarkers and depressive symptoms in individuals with recently diagnosed type 1 and type 2 diabetes.
abstract: Depressive disorders represent a frequent comorbidity of both type 1 (T1D) and type 2 diabetes (T2D). Inflammation-related processes have been implicated in the development of both diabetes and depression. This study aimed to investigate whether biomarkers of subclinical inflammation were associated with depressive symptoms in individuals with recently diagnosed diabetes and if such associations differed by diabetes type. This cross-sectional study was based on 295 individuals with T2D (67% men, mean age 53years) and 139 individuals with T1D (60% men, mean age 36years) of the German Diabetes Study. The main inclusion criterion was a known disease duration of <1year. Depressive symptoms were assessed with the Allgemeine Depressionsskala, Langversion (ADS-L) questionnaire, the German version of the Center for Epidemiological Studies Depression scale (CES-D) questionnaire. Associations between biomarkers of subclinical inflammation and the ADS-L as continuous score were assessed using multiple linear regression models adjusting for age, sex, body mass index, HbA1c, lipids, hypertension, medication and comorbidities. Serum high-sensitivity C-reactive protein (hsCRP) and the ratio of high-molecular-weight (HMW)/total adiponectin were positively associated with ADS-L in T2D (both P<0.01), but not in T1D. In contrast, serum levels of soluble intercellular adhesion molecule (sICAM)-1 were positively associated with ADS-L only in T1D (P=0.035). The latter association was significantly different between both diabetes types (Pinteraction=0.036). No associations were observed for interleukin (IL)-6, IL-18 and soluble E-selectin. Only the association between HMW/total adiponectin and ADS-L in T2D remained significant after correction for multiple testing. In conclusion, our study shows that the ratio HMW/total adiponectin is associated with depressive symptoms in individuals with recently diagnosed T2D. It also provides suggestive evidence that further biomarkers of subclinical inflammation and endothelial activation may be associated with depressive symptoms in individuals with recently diagnosed T1D and T2D.
authors.affiliation: Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany. Electronic address: christian.herder@ddz.uni-duesseldorf.de.
authors.forename: Christian
authors.initials: C
authors.lastname: Herder
authors.affiliation: German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Paul Langerhans Group for Health Services Research and Health Economics, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany. Electronic address: jf.fuerstos@gmx.de.
authors.forename: Jan-Felix
authors.initials: JF
authors.lastname: Fürstos
authors.affiliation: Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstraβe 5, 40225 Düsseldorf, Germany. Electronic address: bettina.nowotny@ddz.uni-duesseldorf.de.
authors.forename: Bettina
authors.initials: B
authors.lastname: Nowotny
authors.affiliation: German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Paul Langerhans Group for Health Services Research and Health Economics, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany. Electronic address: alexander.begun@ddz.uni-duesseldorf.de.
authors.forename: Alexander
authors.initials: A
authors.lastname: Begun
authors.affiliation: German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Institute for Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany. Electronic address: klaus.strassburger@ddz.uni-duesseldorf.de.
authors.forename: Klaus
authors.initials: K
authors.lastname: Strassburger
authors.affiliation: Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstraβe 5, 40225 Düsseldorf, Germany. Electronic address: karsten.muessig@ddz.uni-duesseldorf.de.
authors.forename: Karsten
authors.initials: K
authors.lastname: Müssig
authors.affiliation: Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstraβe 5, 40225 Düsseldorf, Germany. Electronic address: julia.szendroedi@ddz.uni-duesseldorf.de.
authors.forename: Julia
authors.initials: J
authors.lastname: Szendroedi
authors.affiliation: German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Paul Langerhans Group for Health Services Research and Health Economics, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; Institute for Health Services Research and Health Economics, Centre for Health and Society, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstraβe 5, 40225 Düsseldorf, Germany. Electronic address: andrea.icks@ddz.uni-duesseldorf.de.
authors.forename: Andrea
authors.initials: A
authors.lastname: Icks
authors.affiliation: Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Auf'm Hennekamp 65, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD), Ingolstädter Landstraβe 1, 85764 München-Neuherberg, Germany; Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Moorenstraβe 5, 40225 Düsseldorf, Germany. Electronic address: michael.roden@ddz.uni-duesseldorf.de.
authors.forename: Michael
authors.initials: M
authors.lastname: Roden
mesh_terms: D052242:Adiponectin / Q000097:blood*; D000328:Adult; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein / Q000032:analysis*; D003863:Depression / Q000097:blood* / Q000150:complications / Q000523:psychology; D003922:Diabetes Mellitus, Type 1 / Q000097:blood* / Q000150:complications / Q000523:psychology; D003924:Diabetes Mellitus, Type 2 / Q000097:blood* / Q000150:complications / Q000523:psychology; D005260:Female; D006801:Humans; D007249:Inflammation / Q000097:blood* / Q000150:complications / Q000523:psychology; D018799:Intercellular Adhesion Molecule-1 / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D016209:Interleukin-8 / Q000097:blood; D008297:Male; D008875:Middle Aged; D055815:Young Adult
chemical_list: D052242:Adiponectin; D015415:Biomarkers; D015850:Interleukin-6; D016209:Interleukin-8; D018799:Intercellular Adhesion Molecule-1; D002097:C-Reactive Protein
keywords: Biomarkers; Depression; Inflammation; Type 1 diabetes; Type 2 diabetes