Volume 25, Issue 2 pp. 125-134
Original Article

Association of vascular endothelial growth factor and renal thrombotic microangiopathy-like lesions in patients with Castleman's disease

Ping-Ping Sun

Ping-Ping Sun

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Xiao-Juan Yu

Xiao-Juan Yu

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Su-Xia Wang

Corresponding Author

Su-Xia Wang

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

Laboratory of Electron Microscopy, Pathological Center, Peking University First Hospital, Beijing, China

Correspondence

Dr Li Yang, Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, People's Republic of China, No. 8, Xishiku Street, Xicheng District, Beijing 100 034, China. Email: [email protected]

Dr Su-Xia, Laboratory of Electron Microscopy, Pathological Center, Peking University First Hospital, Beijing, China, No. 8, Xishiku Street, Xicheng District, Beijing 100 034, China. Email: [email protected]

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Xu-Jie Zhou

Xu-Jie Zhou

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Lei Qu

Lei Qu

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Fan Zhang

Fan Zhang

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Yi-Yi Ma

Yi-Yi Ma

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Gang Liu

Gang Liu

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

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Li Yang

Corresponding Author

Li Yang

Renal Division, Peking University First Hospital; Peking University Institute of Nephrology; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, China

Renal Pathology Center, Peking University Institute of Nephrology, Beijing, China

Correspondence

Dr Li Yang, Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment (Peking University), Ministry of Education, Beijing, People's Republic of China, No. 8, Xishiku Street, Xicheng District, Beijing 100 034, China. Email: [email protected]

Dr Su-Xia, Laboratory of Electron Microscopy, Pathological Center, Peking University First Hospital, Beijing, China, No. 8, Xishiku Street, Xicheng District, Beijing 100 034, China. Email: [email protected]

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First published: 01 July 2019
Citations: 8

ABSTRACT

Aim

Renal thrombotic microangiopathy (TMA) is a common pathological manifestation of Castleman's disease (CD)-associated renal lesions. Increased level of plasma vascular endothelial growth factor (VEGF) has been shown in single-case reports. We aimed to investigate the dysregulation of VEGF in the pathogenesis of CD-associated TMA-like lesions (CD-TMA) in a larger cohort.

Methods

Nineteen patients with clinico-pathologically diagnosed CD with renal involvement were enrolled. Ten patients with pregnancy TMA or TMA of unknown reasons were enrolled as TMA control group. The plasma levels of VEGF, soluble Flt-1 and interleukin-6 (IL-6) were detected using enzyme-linked immunosorbent assay kits. The expression of VEGF in the kidney biopsied tissue sections and the lymph node specimens were detected by immunostaining.

Results

The plasma levels of VEGF and IL-6 levels were the highest in CD-TMA group compared to TMA control group and healthy controls. The levels of plasma VEGF was positively correlated with that of IL-6, and increased expression of VEGF and IL-6 was also observed in the lymph nodes from CD-TMA patients. However, the expression of VEGF in the glomerular podocytes was significantly decreased in CD-TMA group as well as in the TMA control.

Conclusion

Our findings suggest that renal VEGF expression might be important in the pathogenetic mechanism of CD-associated TMA-like lesions.

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