Glomerulopathy Associated With Moderate Obesity

Obesity-related glomerulopathy is an established secondary glomerular disease that may occur in obese individuals with a body mass index (BMI) of ≥30 kg/m2. However, patients with moderate obesity (BMI ≤ 30 kg/m2) may also develop this disease. Methods: A total of 20 patients with grade 1 obesity (2...

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Main Authors: Yusuke Okabayashi, Nobuo Tsuboi, Takaya Sasaki, Kotaro Haruhara, Go Kanzaki, Kentaro Koike, Yoichi Miyazaki, Tetsuya Kawamura, Makoto Ogura, Takashi Yokoo
Format: Article
Language:English
Published: Elsevier 2016-11-01
Series:Kidney International Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2468024916300584
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author Yusuke Okabayashi
Nobuo Tsuboi
Takaya Sasaki
Kotaro Haruhara
Go Kanzaki
Kentaro Koike
Yoichi Miyazaki
Tetsuya Kawamura
Makoto Ogura
Takashi Yokoo
author_facet Yusuke Okabayashi
Nobuo Tsuboi
Takaya Sasaki
Kotaro Haruhara
Go Kanzaki
Kentaro Koike
Yoichi Miyazaki
Tetsuya Kawamura
Makoto Ogura
Takashi Yokoo
author_sort Yusuke Okabayashi
collection DOAJ
description Obesity-related glomerulopathy is an established secondary glomerular disease that may occur in obese individuals with a body mass index (BMI) of ≥30 kg/m2. However, patients with moderate obesity (BMI ≤ 30 kg/m2) may also develop this disease. Methods: A total of 20 patients with grade 1 obesity (25 ≤ BMI < 30 kg/m2) with persistent proteinuria, without evidence of other renal diseases, were analyzed retrospectively. These patients were compared with 20 patients with grade 2 or higher obesity (BMI ≥ 30 kg/m2) with persistent proteinuria. Biopsies of 31 kidney transplant donors as healthy controls were used to compare histologic parameters. Results: Similar to the grade 2 or higher obesity group, the grade 1 obesity group had a male predominance (85%) and showed a high incidence of hypertension (80%). Urinary protein excretion and renal outcome parameters were comparable between the groups. Patients with grade 1 obesity showed typical histologic features of obesity-related glomerulopathy: low glomerular density with glomerulomegaly. The glomerular density and mean glomerular volume in the grade 1 group, the grade 2 or higher group, and the kidney transplant donors with grade 1 obesity were 1.6 ± 0.8 versus 1.4 ± 0.6 versus 3.0 ± 1.1 (per mm2) and 6.1 ± 2.1 versus 6.4 ± 1.6 versus 2.9 ± 0.8 (×106 μm3), respectively. Discussion: A glomerulopathy similar to obesity-related glomerulopathy can occur in moderately obese individuals. Renal factor(s), such as low glomerular density, may thus underlie susceptibility to this disease entity as well as BMI.
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spelling doaj.art-c0929dc30d6a48ef81c88a9980c074c52022-12-22T02:46:39ZengElsevierKidney International Reports2468-02492016-11-011425025510.1016/j.ekir.2016.08.006Glomerulopathy Associated With Moderate ObesityYusuke Okabayashi0Nobuo Tsuboi1Takaya Sasaki2Kotaro Haruhara3Go Kanzaki4Kentaro Koike5Yoichi Miyazaki6Tetsuya Kawamura7Makoto Ogura8Takashi Yokoo9Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanDivision of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, JapanObesity-related glomerulopathy is an established secondary glomerular disease that may occur in obese individuals with a body mass index (BMI) of ≥30 kg/m2. However, patients with moderate obesity (BMI ≤ 30 kg/m2) may also develop this disease. Methods: A total of 20 patients with grade 1 obesity (25 ≤ BMI < 30 kg/m2) with persistent proteinuria, without evidence of other renal diseases, were analyzed retrospectively. These patients were compared with 20 patients with grade 2 or higher obesity (BMI ≥ 30 kg/m2) with persistent proteinuria. Biopsies of 31 kidney transplant donors as healthy controls were used to compare histologic parameters. Results: Similar to the grade 2 or higher obesity group, the grade 1 obesity group had a male predominance (85%) and showed a high incidence of hypertension (80%). Urinary protein excretion and renal outcome parameters were comparable between the groups. Patients with grade 1 obesity showed typical histologic features of obesity-related glomerulopathy: low glomerular density with glomerulomegaly. The glomerular density and mean glomerular volume in the grade 1 group, the grade 2 or higher group, and the kidney transplant donors with grade 1 obesity were 1.6 ± 0.8 versus 1.4 ± 0.6 versus 3.0 ± 1.1 (per mm2) and 6.1 ± 2.1 versus 6.4 ± 1.6 versus 2.9 ± 0.8 (×106 μm3), respectively. Discussion: A glomerulopathy similar to obesity-related glomerulopathy can occur in moderately obese individuals. Renal factor(s), such as low glomerular density, may thus underlie susceptibility to this disease entity as well as BMI.http://www.sciencedirect.com/science/article/pii/S2468024916300584body mass indexglomerular densityhyperfiltrationobesityrenal biopsy
spellingShingle Yusuke Okabayashi
Nobuo Tsuboi
Takaya Sasaki
Kotaro Haruhara
Go Kanzaki
Kentaro Koike
Yoichi Miyazaki
Tetsuya Kawamura
Makoto Ogura
Takashi Yokoo
Glomerulopathy Associated With Moderate Obesity
Kidney International Reports
body mass index
glomerular density
hyperfiltration
obesity
renal biopsy
title Glomerulopathy Associated With Moderate Obesity
title_full Glomerulopathy Associated With Moderate Obesity
title_fullStr Glomerulopathy Associated With Moderate Obesity
title_full_unstemmed Glomerulopathy Associated With Moderate Obesity
title_short Glomerulopathy Associated With Moderate Obesity
title_sort glomerulopathy associated with moderate obesity
topic body mass index
glomerular density
hyperfiltration
obesity
renal biopsy
url http://www.sciencedirect.com/science/article/pii/S2468024916300584
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AT gokanzaki glomerulopathyassociatedwithmoderateobesity
AT kentarokoike glomerulopathyassociatedwithmoderateobesity
AT yoichimiyazaki glomerulopathyassociatedwithmoderateobesity
AT tetsuyakawamura glomerulopathyassociatedwithmoderateobesity
AT makotoogura glomerulopathyassociatedwithmoderateobesity
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