Inflammation and Kidney Injury in Diabetic African American Men
African Americans are disproportionately burdened by diabetic kidney disease (DKD). However, little is known about the cellular and molecular mechanisms underlying the onset and progression of DKD in this population. The goal of the current study was to determine the association between specific inf...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Diabetes Research |
| Online Access: | http://dx.doi.org/10.1155/2019/5359635 |
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| author | Lei Cao Ava Boston Olugbemiga Jegede Heather A. Newman Scott H. Harrison Robert H. Newman Elimelda Moige Ongeri |
| author_facet | Lei Cao Ava Boston Olugbemiga Jegede Heather A. Newman Scott H. Harrison Robert H. Newman Elimelda Moige Ongeri |
| author_sort | Lei Cao |
| collection | DOAJ |
| description | African Americans are disproportionately burdened by diabetic kidney disease (DKD). However, little is known about the cellular and molecular mechanisms underlying the onset and progression of DKD in this population. The goal of the current study was to determine the association between specific inflammation markers and kidney injury in diabetic African American men. To this end, we recruited diabetic patients either with (n=20) or without (n=87) diagnosed kidney disease along with age-matched nondiabetic controls (n=81). Urinary albumin-to-creatinine ratios (UACRs) and estimated glomerular filtration rates (eGFR) were used for biochemical assessment of kidney function. We then measured plasma and urinary levels of seven inflammatory markers, including adiponectin, C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), TNF receptor 1 (TNFR1), TNF receptor 2 (TNFR2), interleukin-6 (IL-6), and intercellular cell adhesion molecule-1 (ICAM-1). Plasma levels of TNF-α, TNFR1, and TNFR2 were significantly higher in diabetics with macroalbuminuria compared to nondiabetic controls and diabetics with normoalbuminuria or microalbuminuria. Likewise, urinary levels of ICAM-1 were higher in diabetics with macroalbuminuria compared to the other groups. Indeed, urinary ICAM-1, plasma TNF-α, and adiponectin had moderate positive correlations with UACR while plasma TNFR1 and TNFR2 levels were strongly correlated with kidney injury, indicated by multiple biomarkers of kidney injury. In contrast, though plasma CRP was elevated in diabetic subjects relative to nondiabetic controls, its levels did not correlate with kidney injury. Together, these data suggest that inflammation, particularly that mediated by the TNF-α/NF-κB signaling axis, may play a role in the pathogenesis of DKD in African American men. |
| format | Article |
| id | doaj-art-d9237e7d7a2143f6b822aa660c15b87f |
| institution | Kabale University |
| issn | 2314-6745 2314-6753 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Diabetes Research |
| spelling | doaj-art-d9237e7d7a2143f6b822aa660c15b87f2025-08-20T03:24:15ZengWileyJournal of Diabetes Research2314-67452314-67532019-01-01201910.1155/2019/53596355359635Inflammation and Kidney Injury in Diabetic African American MenLei Cao0Ava Boston1Olugbemiga Jegede2Heather A. Newman3Scott H. Harrison4Robert H. Newman5Elimelda Moige Ongeri6Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Biology, North Carolina A&T State University, Greensboro, NC 27411, USACone Health Community Health and Wellness Center, Greensboro, NC 27401, USADepartment of Biology, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Biology, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Biology, North Carolina A&T State University, Greensboro, NC 27411, USADepartment of Biology, North Carolina A&T State University, Greensboro, NC 27411, USAAfrican Americans are disproportionately burdened by diabetic kidney disease (DKD). However, little is known about the cellular and molecular mechanisms underlying the onset and progression of DKD in this population. The goal of the current study was to determine the association between specific inflammation markers and kidney injury in diabetic African American men. To this end, we recruited diabetic patients either with (n=20) or without (n=87) diagnosed kidney disease along with age-matched nondiabetic controls (n=81). Urinary albumin-to-creatinine ratios (UACRs) and estimated glomerular filtration rates (eGFR) were used for biochemical assessment of kidney function. We then measured plasma and urinary levels of seven inflammatory markers, including adiponectin, C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), TNF receptor 1 (TNFR1), TNF receptor 2 (TNFR2), interleukin-6 (IL-6), and intercellular cell adhesion molecule-1 (ICAM-1). Plasma levels of TNF-α, TNFR1, and TNFR2 were significantly higher in diabetics with macroalbuminuria compared to nondiabetic controls and diabetics with normoalbuminuria or microalbuminuria. Likewise, urinary levels of ICAM-1 were higher in diabetics with macroalbuminuria compared to the other groups. Indeed, urinary ICAM-1, plasma TNF-α, and adiponectin had moderate positive correlations with UACR while plasma TNFR1 and TNFR2 levels were strongly correlated with kidney injury, indicated by multiple biomarkers of kidney injury. In contrast, though plasma CRP was elevated in diabetic subjects relative to nondiabetic controls, its levels did not correlate with kidney injury. Together, these data suggest that inflammation, particularly that mediated by the TNF-α/NF-κB signaling axis, may play a role in the pathogenesis of DKD in African American men.http://dx.doi.org/10.1155/2019/5359635 |
| spellingShingle | Lei Cao Ava Boston Olugbemiga Jegede Heather A. Newman Scott H. Harrison Robert H. Newman Elimelda Moige Ongeri Inflammation and Kidney Injury in Diabetic African American Men Journal of Diabetes Research |
| title | Inflammation and Kidney Injury in Diabetic African American Men |
| title_full | Inflammation and Kidney Injury in Diabetic African American Men |
| title_fullStr | Inflammation and Kidney Injury in Diabetic African American Men |
| title_full_unstemmed | Inflammation and Kidney Injury in Diabetic African American Men |
| title_short | Inflammation and Kidney Injury in Diabetic African American Men |
| title_sort | inflammation and kidney injury in diabetic african american men |
| url | http://dx.doi.org/10.1155/2019/5359635 |
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