### Abstract

We studied 40 hyperplastic polyps (HP) immunohistochemically with monoclonal antibodies against 8 different blood group antigens (BGA) comparing their reactivity with normal control colon and colorectal adenocarcinomas. The 8 BGA studied were: Sialosyl-Le^{a}, Le^{a}, Le^{b}, Le(x), Le(y), A, B, and H. Sialosyl-Le^{a}, Le^{a}, Le(x), and Le(y) can be thought of as differentiation antigens. The former 2 BGA are expressed on mature (differentiated) epithelium while the latter 2 BGA are expressed by undifferentiated epithelium of the crypt base. A, B, H and Le^{b} are not expressed in the normal distal colon, however, they are extenively expressed on distal colorectal cancers and andenomas and can be considered onocofetal BGA. HP expressed Le^{a}, Le(x), Le(y) in the same compartment of the crypt as normal colon and extensively expressed Sialosyl-Le^{a} throughout the entire length of the crypt. This latter finding indicated maturation at a lower point in the crypt than in normals. All HP failed to express B and H BGA, while 6 of 40 expressed Le^{b} and 5 of 50 HP expressed A BGA. Of the 6 HP expressing Le^{b} BGA, 3 were from patients with synchronous or metachronous cancers and 2 from patients with mixed hyperplastic polyp-adenomas (HP/AD). Two of the HP expressing A BGA were from patients with HP/AD. The expression and distribution of these BGA in HP, especially the extensive expression of sialosyl-Le^{a} correlates with the known cell kinetics of HP. While nonneoplastic in nature, HP may occasionally express true oncofetal BGA. Similarly, the HP component of HP/AD may also express true onocofetal BGA. These data suggest that the lesions classified morphologically as HP may be antigenically heterogenous.

Original language | English (US) |
---|---|

Pages (from-to) | 421-428 |

Number of pages | 8 |

Journal | Laboratory Investigation |

Volume | 57 |

Issue number | 4 |

State | Published - 1987 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Pathology and Forensic Medicine

### Cite this

^{a}, Le

^{b}, Le(x), Le(y), A, B, H).

*Laboratory Investigation*,

*57*(4), 421-428.

**Hyperplastic polyps of the colon and rectum. An immunohistochemical study with monoclonal antibodies against blood groups antigens (Sialosyl-Le ^{a}, Le^{b}, Le(x), Le(y), A, B, H).** / Cooper, H. S.; Marshall, Carol S; Ruggerio, F.; Steplewski, Z.

Research output: Contribution to journal › Article

^{a}, Le

^{b}, Le(x), Le(y), A, B, H)',

*Laboratory Investigation*, vol. 57, no. 4, pp. 421-428.

^{a}, Le

^{b}, Le(x), Le(y), A, B, H). Laboratory Investigation. 1987;57(4):421-428.

}

TY - JOUR

T1 - Hyperplastic polyps of the colon and rectum. An immunohistochemical study with monoclonal antibodies against blood groups antigens (Sialosyl-Lea, Leb, Le(x), Le(y), A, B, H)

AU - Cooper, H. S.

AU - Marshall, Carol S

AU - Ruggerio, F.

AU - Steplewski, Z.

PY - 1987

Y1 - 1987

N2 - We studied 40 hyperplastic polyps (HP) immunohistochemically with monoclonal antibodies against 8 different blood group antigens (BGA) comparing their reactivity with normal control colon and colorectal adenocarcinomas. The 8 BGA studied were: Sialosyl-Lea, Lea, Leb, Le(x), Le(y), A, B, and H. Sialosyl-Lea, Lea, Le(x), and Le(y) can be thought of as differentiation antigens. The former 2 BGA are expressed on mature (differentiated) epithelium while the latter 2 BGA are expressed by undifferentiated epithelium of the crypt base. A, B, H and Leb are not expressed in the normal distal colon, however, they are extenively expressed on distal colorectal cancers and andenomas and can be considered onocofetal BGA. HP expressed Lea, Le(x), Le(y) in the same compartment of the crypt as normal colon and extensively expressed Sialosyl-Lea throughout the entire length of the crypt. This latter finding indicated maturation at a lower point in the crypt than in normals. All HP failed to express B and H BGA, while 6 of 40 expressed Leb and 5 of 50 HP expressed A BGA. Of the 6 HP expressing Leb BGA, 3 were from patients with synchronous or metachronous cancers and 2 from patients with mixed hyperplastic polyp-adenomas (HP/AD). Two of the HP expressing A BGA were from patients with HP/AD. The expression and distribution of these BGA in HP, especially the extensive expression of sialosyl-Lea correlates with the known cell kinetics of HP. While nonneoplastic in nature, HP may occasionally express true oncofetal BGA. Similarly, the HP component of HP/AD may also express true onocofetal BGA. These data suggest that the lesions classified morphologically as HP may be antigenically heterogenous.

AB - We studied 40 hyperplastic polyps (HP) immunohistochemically with monoclonal antibodies against 8 different blood group antigens (BGA) comparing their reactivity with normal control colon and colorectal adenocarcinomas. The 8 BGA studied were: Sialosyl-Lea, Lea, Leb, Le(x), Le(y), A, B, and H. Sialosyl-Lea, Lea, Le(x), and Le(y) can be thought of as differentiation antigens. The former 2 BGA are expressed on mature (differentiated) epithelium while the latter 2 BGA are expressed by undifferentiated epithelium of the crypt base. A, B, H and Leb are not expressed in the normal distal colon, however, they are extenively expressed on distal colorectal cancers and andenomas and can be considered onocofetal BGA. HP expressed Lea, Le(x), Le(y) in the same compartment of the crypt as normal colon and extensively expressed Sialosyl-Lea throughout the entire length of the crypt. This latter finding indicated maturation at a lower point in the crypt than in normals. All HP failed to express B and H BGA, while 6 of 40 expressed Leb and 5 of 50 HP expressed A BGA. Of the 6 HP expressing Leb BGA, 3 were from patients with synchronous or metachronous cancers and 2 from patients with mixed hyperplastic polyp-adenomas (HP/AD). Two of the HP expressing A BGA were from patients with HP/AD. The expression and distribution of these BGA in HP, especially the extensive expression of sialosyl-Lea correlates with the known cell kinetics of HP. While nonneoplastic in nature, HP may occasionally express true oncofetal BGA. Similarly, the HP component of HP/AD may also express true onocofetal BGA. These data suggest that the lesions classified morphologically as HP may be antigenically heterogenous.

UR - http://www.scopus.com/inward/record.url?scp=0023471980&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023471980&partnerID=8YFLogxK

M3 - Article

VL - 57

SP - 421

EP - 428

JO - Laboratory Investigation

JF - Laboratory Investigation

SN - 0023-6837

IS - 4

ER -