1. CD71 in Gestational Pathology: A Versatile Immunohistochemical Marker With New Possible Applications
- Author
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Marco Chilosi, Claudia Parolini, Claudio Luchini, Andrea Remo, Alessia Nottegar, Erminia Manfrin, Pietro Parcesepe, and Andrea Mafficini
- Subjects
0301 basic medicine ,Pathology ,medicine.medical_specialty ,Histology ,Biology ,Pathology and Forensic Medicine ,03 medical and health sciences ,Immunolabeling ,0302 clinical medicine ,Molar pregnancy ,Antigens, CD ,Pregnancy ,Receptors, Transferrin ,medicine ,Humans ,transferrin receptor ,CD71 ,nucleated red blood cells ,trophoblast ,molar pregnancy ,Gestational age ,Trophoblast ,medicine.disease ,Immunohistochemistry ,Pregnancy Complications ,Medical Laboratory Technology ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Chorionic villi ,Female ,Biomarkers - Abstract
Transferrin receptor/CD71 is a membrane protein expressed on nucleated red blood cells (NRBCs) and trophoblasts. Here, we propose the first study to evaluate the usefulness of CD71 immunolabeling in the main fields of gestational pathology. To this aim, formalin-fixed, paraffin-embedded samples of 45 orthotopic (23 spontaneous abortive and 22 molar pregnancies) and 11 ectopic pregnancies were immunostained for CD71. NRBCs were morphologically evident in 23 cases: 12/23 abortive, 4/11 ectopic, and 7/10 partial molar pregnancies. CD71 immunolabeling detected NRBCs in all 23 previous cases and in 8 new cases: 2 partial moles and 6 spontaneous abortive pregnancies. No NRBCs were detected in complete moles by means of either morphology or immunohistochemistry (IHC). In 4 cases with extensive necrotic changes, CD71 marked NRBCs and a few ghost villi, which were not certainly identifiable with standard histological evaluation. Furthermore, there was an inversely proportional relationship between total percentage of CD71-positive NRBCs and gestational age (R=0.69; P
- Published
- 2015