title: [Application of Immunohistochemistry and Immunofluorescence Staining in Detection of Phospholipase A2 Receptor on Paraffin Section of Renal Biopsy Tissue].
abstract: OBJECTIVE
  To evaluate the application of immunohistochemistry and fluorescence staining method in the detection of phospholipase A2 receptor (PLA2R) on paraffin section of renal biopsy tissue,and to find an accurate and fast method for the detection of PLA2R in renal tissue.
  
  
  METHODS
  The PLA2R of 193 cases were detected by immunohistochemical staining,and the antigen was repaired by the method of high pressure cooker (HPC) hot repair plus trypsin repair. The 193 samples including 139 cases of idiopathic membranous nephropathy (IMN), 15 cases of membranous lupus nephritis, 8 cases of hepatitis B virus associated membranous nephropathy, 18 cases of IgA nephropathy, and 13 cases of minimal change diseases. To compare the dyeing effects, 22 paraffin sections of renal biopsy tissue of IMN cases with positive PLA2R were stained by using 4 different.
  
  
  METHODS
  of antigen repairing,which included HPC hot repair, HPC hot repair plus trypsin repair, water bath heat repair, and water bath heat repair plus trypsin repair. To compare the dyeing effects, 15 paraffin sections of renal biopsy tissue of IMN cases with positive PLA2R were stained by using 3 different.
  
  
  METHODS
  of antigen repairing,which included water bath heat repair plus trypsin repair, protease K digestion repair, and pepsin digestion repair.
  
  
  RESULTS
  In 193 cases, the positive rate of PLA2R in IMN cases was 90.6% (126/139), and the other 54 patients without IMN were negative. Twenty-two IMN patients were positive for PLA2R by using the HPC heat repair plus trypsin repaire or the water bath heat repair plus trypsin repair;while only a few cases of 22 IMN cases were positive by using the HPC hot repair alone or water bath heat repair alone. Fifteen IMN patients were positive for PLA2R by using water bath heat repair plus trypsin repair,protease K digestion repair,and pepsin digestion repair, but the distribution of positive deposits and the background were different.
  
  
  CONCLUSIONS
  PLA2R immunohistochemical staining can effectively identify IMN and secondary MN. For immunohistochemical staining and immunofluorescence staining, the preferred method of antigen repair is water bath heat repair plus trypsin repair.
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Hong-rui
authors.initials: HR
authors.lastname: Dong
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Yan-yan
authors.initials: YY
authors.lastname: Wang
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Guo-qin
authors.initials: GQ
authors.lastname: Wang
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Sun
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Hong
authors.initials: H
authors.lastname: Cheng
authors.affiliation: Department of Nephrology,Beijing Anzhen Hospital,Capital Medical University,Beijing 100029,China.
authors.forename: Yi-pu
authors.initials: YP
authors.lastname: Chen
mesh_terms: D005455:Fluorescent Antibody Technique; D005922:Glomerulonephritis, IGA; D015433:Glomerulonephritis, Membranous; D006801:Humans; D007150:Immunohistochemistry; D010232:Paraffin; D054507:Receptors, Phospholipase A2; D013194:Staining and Labeling
chemical_list: D054507:Receptors, Phospholipase A2; D010232:Paraffin