| Glomerular hyperfiltration and increased glomerular filtration surface are associated with renal function decline in normo- and microalbuminuric type 2 diabetes. | |
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MedLine Citation:
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PMID: 22157655 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The prevalence of glomerular hyperfiltration in type 2 diabetic patients varies widely. Here we studied whether glomerular hyperfiltration in diabetic nephropathy in type 2 patients is related to renal structural changes and predicts the functional development of diabetic nephropathy. Thirty normo- or microalbuminuric type 2 diabetic patients having a renal biopsy were followed every 6 months for a mean of 6.2 years. The glomerular filtration rate (GFR) at the time of biopsy, determined by iohexol clearance, correlated with filtration surface per glomerulus, but no other quantitative microscopic morphometric parameter. The filtration surface was positively associated with the decrease in GFR during the first year but not associated in subsequent years following the renal biopsy. The GFR showed a statistically significant linear decrease in 9 of the 30 patients; however, slopes of the regression lines were almost zero in 11 patients. The GFR increased and decreased in a parabolic manner in two patients. Seven of the nine patients with a statistically significant decline in renal function did not show any appreciable worsening of albuminuria, while two patients developed persistent proteinuria. Thus, in renal biopsy-proven normo- or microalbuminuric type 2 diabetic patients, glomerular hyperfiltration is closely associated with an increased glomerular filtration surface. An elevated GFR predicts its subsequent decline, which may occur without worsening of albuminuria.Kidney International advance online publication, 7 December 2011; doi:10.1038/ki.2011.404. |
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Authors:
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Tatsumi Moriya; Akiko Tsuchiya; Shin-Ichiro Okizaki; Akinori Hayashi; Keiji Tanaka; Masayoshi Shichiri |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-07 |
Journal Detail:
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Title: Kidney international Volume: - ISSN: 1523-1755 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0323470 Medline TA: Kidney Int Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Endocrinology, Diabetes and Metabolism, Kitasato University School of Medicine, Kitasato, Minami-ku, Sagamihara, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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