IgG subclass deposition in diabetic nephropathy
Abstract Purpose This study aimed to analyze the distribution of IgG subclass in diabetic nephropathy (DN) and its association with clinicopathological features. Methods This is a single-center retrospective study enrolling 108 patients with biopsy-proven DN. Immunofluorescence and immunohistochemis...
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| Format: | Article |
| Language: | English |
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BMC
2022-08-01
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| Series: | European Journal of Medical Research |
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| Online Access: | https://doi.org/10.1186/s40001-022-00779-9 |
| _version_ | 1818084268859981824 |
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| author | Xuanli Tang Feng Wan Qin Zhu Tian Ye Xue Jiang Haichun Yang |
| author_facet | Xuanli Tang Feng Wan Qin Zhu Tian Ye Xue Jiang Haichun Yang |
| author_sort | Xuanli Tang |
| collection | DOAJ |
| description | Abstract Purpose This study aimed to analyze the distribution of IgG subclass in diabetic nephropathy (DN) and its association with clinicopathological features. Methods This is a single-center retrospective study enrolling 108 patients with biopsy-proven DN. Immunofluorescence and immunohistochemistry staining were applied, and clinicopathological features and renal outcomes were compared between patients with different patterns or categories of IgG subclass deposition. Results Both IgG and its subclasses colocalized with collagen IV α5 on glomerular basement membrane (GBM) and some of tubular basement membrane (TBM). IgG1 and the Mixed type were two predominant types of deposition, no matter on GBM or TBM, and IgG1 showed a much higher deposition rate on GBM than that on TBM (P = 0.004). IgG subclass deposit on multi-location was more associated with a shorter duration of nephropathy and severer tubular interstitial injury (P < 0.05). The mixed type of IgG subclass deposit on GBM was merely associated with higher levels of proteinuria, whereas the deposition on TBM was more associated with higher levels of proteinuria, lower levels of albumin, more KIM-1 positive area, and thicker TBM (P < 0.05). Survival analysis revealed that none of the pattern or the category of IgG subclass deposit was a risk factor or a renal outcome indicator. Conclusions IgG subclass was selectively deposited along GBM and/or TBM in DN, and the mixed type of IgG subclass deposition on TBM had more clinical significance than the isotype and that on GBM. IgG subclass deposition is merely a manifestation or a consequence rather than a cause in DN. |
| first_indexed | 2024-12-10T19:51:12Z |
| format | Article |
| id | doaj.art-0907eeb4fd1a42a69fab2e6d405f0fac |
| institution | Directory Open Access Journal |
| issn | 2047-783X |
| language | English |
| last_indexed | 2024-12-10T19:51:12Z |
| publishDate | 2022-08-01 |
| publisher | BMC |
| record_format | Article |
| series | European Journal of Medical Research |
| spelling | doaj.art-0907eeb4fd1a42a69fab2e6d405f0fac2022-12-22T01:35:46ZengBMCEuropean Journal of Medical Research2047-783X2022-08-012711910.1186/s40001-022-00779-9IgG subclass deposition in diabetic nephropathyXuanli Tang0Feng Wan1Qin Zhu2Tian Ye3Xue Jiang4Haichun Yang5Department of Nephrology (Key Laboratory of Zhejiang Province, Management of Kidney Disease), Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical UniversityDepartment of Nephrology (Key Laboratory of Zhejiang Province, Management of Kidney Disease), Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical UniversityDepartment of Nephrology (Key Laboratory of Zhejiang Province, Management of Kidney Disease), Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical UniversityDepartment of Nephrology (Key Laboratory of Zhejiang Province, Management of Kidney Disease), Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical UniversityDepartment of Nephrology (Key Laboratory of Zhejiang Province, Management of Kidney Disease), Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical UniversityDepartment of Pathology, Microbiology, and Immunology, Vanderbilt University Medical CenterAbstract Purpose This study aimed to analyze the distribution of IgG subclass in diabetic nephropathy (DN) and its association with clinicopathological features. Methods This is a single-center retrospective study enrolling 108 patients with biopsy-proven DN. Immunofluorescence and immunohistochemistry staining were applied, and clinicopathological features and renal outcomes were compared between patients with different patterns or categories of IgG subclass deposition. Results Both IgG and its subclasses colocalized with collagen IV α5 on glomerular basement membrane (GBM) and some of tubular basement membrane (TBM). IgG1 and the Mixed type were two predominant types of deposition, no matter on GBM or TBM, and IgG1 showed a much higher deposition rate on GBM than that on TBM (P = 0.004). IgG subclass deposit on multi-location was more associated with a shorter duration of nephropathy and severer tubular interstitial injury (P < 0.05). The mixed type of IgG subclass deposit on GBM was merely associated with higher levels of proteinuria, whereas the deposition on TBM was more associated with higher levels of proteinuria, lower levels of albumin, more KIM-1 positive area, and thicker TBM (P < 0.05). Survival analysis revealed that none of the pattern or the category of IgG subclass deposit was a risk factor or a renal outcome indicator. Conclusions IgG subclass was selectively deposited along GBM and/or TBM in DN, and the mixed type of IgG subclass deposition on TBM had more clinical significance than the isotype and that on GBM. IgG subclass deposition is merely a manifestation or a consequence rather than a cause in DN.https://doi.org/10.1186/s40001-022-00779-9IgG subclassDiabetic nephropathyGlomerular basement membraneTubular basement membrane |
| spellingShingle | Xuanli Tang Feng Wan Qin Zhu Tian Ye Xue Jiang Haichun Yang IgG subclass deposition in diabetic nephropathy European Journal of Medical Research IgG subclass Diabetic nephropathy Glomerular basement membrane Tubular basement membrane |
| title | IgG subclass deposition in diabetic nephropathy |
| title_full | IgG subclass deposition in diabetic nephropathy |
| title_fullStr | IgG subclass deposition in diabetic nephropathy |
| title_full_unstemmed | IgG subclass deposition in diabetic nephropathy |
| title_short | IgG subclass deposition in diabetic nephropathy |
| title_sort | igg subclass deposition in diabetic nephropathy |
| topic | IgG subclass Diabetic nephropathy Glomerular basement membrane Tubular basement membrane |
| url | https://doi.org/10.1186/s40001-022-00779-9 |
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