1
|
Altınay S, Erözgür B, Dural AC, Volante M, Papotti MG. Monoclonal/polyclonal PAX-8, PTH and GATA3 immunohistochemistry in parathyroid lesions. J Endocrinol Invest 2021; 44:1997-2008. [PMID: 33566340 DOI: 10.1007/s40618-021-01518-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 01/22/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Parathyroid gland (PG) is an endocrine organ which may display different immunohistochemical stainings with chief cells and oxyphilic cells in normal as well as hyperplasic/tumoral lesions. PURPOSE In this study, we aimed to identify the demographic properties and diagnostic value of the GATA3 antibody, which is a transcription factor in addition to PTH, and of PAX-8 (monoclonal and polyclonal) antibody. METHODS We have analyzed in detail the cellular components and staining intensities of 46 adenomas all of which contained parathyroid rims, 12 hyperplasia and 5 adjacent non-neoplastic thyroidectomy materials (63 patients, 114 tissues). RESULTS While no staining was identified in the thyroid tissue, cytoplasmic PTH immunoreactivity was observed in all (100%) normal parathyroid tissues, rim of PGs and hyperplasia, and in 43/46 cases (93.4%) of adenomas. Adenoma and hyperplasia were less stained than normal PG (p < 0.05). We detected GATA3 staining in all cases except for the thyroid (100%). Weak positivity (1+) was most apparent in adenoma cases (p < 0.05). Monoclonal PAX-8 immunoreactivity was not identified in any normal parathyroid tissue and rim of PG but positive immunoreactivity was detected in 83.3% of hyperplasia cases (10/12), 84.8% of adenoma (39/46) and 100% of thyroid tissues (5/5) (p < 0.05). However, polyclonal PAX-8 immunoreactivity was detected in one normal parathyroid tissue (1/5) and seven (7/46) rim of PGs. In cases of hyperplasia and adenoma, positive immunoreactivity was 75% (9/12) and 74% (34/46), respectively. CONCLUSION In conclusion, we have observed that PTH and GATA3 constitute a much more reliable and sensitive marker for parathyroid and are stained less in adenomas. While monoclonal PAX-8 (MRQ-50) never stains normal parathyroid and rim of PGs, it may help in the differential diagnosis of proliferated parathyroid lesions as a considerably sensitive and relatively specific marker by staining hyperplasic parathyroid, adenomas and the thyroid.
Collapse
Affiliation(s)
- S Altınay
- Medical Faculty, University of Health Sciences, Mekteb-I Tıbbiye-I Şahane (Haydarpaşa) Külliyesi Selimiye Mah. Tıbbiye Cad no., 38, Üsküdar, 34668, Istanbul, Turkey.
- Department of Pathology, Bakırköy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey.
- Department of Molecular Oncology, Institute of Health Sciences, University of Health Sciences, Istanbul, Turkey.
| | - B Erözgür
- Department of Pathology, Bakırköy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - A C Dural
- Department of Endocrin Surgery, Bakırköy, Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - M Volante
- Pathology Division of the Department of Oncology, University of Turin, San Luigi Hospital, Regione Gonzole 10, Turin, Italy
| | - M G Papotti
- Pathology Division of the Department of Oncology, University of Turin, San Luigi Hospital, Regione Gonzole 10, Turin, Italy
| |
Collapse
|
2
|
Gucer H, Caliskan S, Kefeli M, Mete O. Do You Know the Details of Your PAX8 Antibody? Monoclonal PAX8 ( MRQ-50) Is Not Expressed in a Series of 45 Medullary Thyroid Carcinomas. Endocr Pathol 2020; 31:33-38. [PMID: 31912298 DOI: 10.1007/s12022-019-09603-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Medullary thyroid carcinomas display cytologic and architectural features that can simulate various primary and metastatic neoplasms. PAX8 immunoexpression in neuroendocrine neoplasms yielded antibody-dependent findings. Since the data regarding the expression profile of monoclonal PAX8 (MRQ-50) antibody is limited in large series of medullary thyroid carcinomas, this study investigated the expression profile of PAX8 (MRQ-50) in a series of 45 medullary thyroid carcinomas. PAX8 (MRQ-50) expression was noted in the thyroid follicular epithelial cells surrounding the tumor and was negative in all medullary thyroid carcinomas. In addition, twenty medullary thyroid carcinomas showed scattered entrapped thyroid follicular epithelial cells at the periphery of the tumor. Entrapped follicular epithelial cells were positive for PAX8 and thyroglobulin, and were negative for monoclonal CEA and calcitonin. A panel approach combining monoclonal antibodies to transcription factors, hormones and cell-specific peptides often assist diagnosticians in the workup of the cellular origin of a neuroendocrine neoplasm. Since PAX8 immunostaining is dependent on the antibody characteristics in neuroendocrine neoplasms, pathologists should be aware of the details of the PAX8 antibody used in a particular case.
Collapse
Affiliation(s)
- Hasan Gucer
- Department of Pathology, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Sultan Caliskan
- Department of Pathology, Ondokuz Mayis University, Samsun, Turkey
| | - Mehmet Kefeli
- Department of Pathology, Ondokuz Mayis University, Samsun, Turkey
| | - Ozgur Mete
- Department of Pathology, University Health Network, Toronto, ON, Canada.
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
| |
Collapse
|
3
|
Lai WA, Hang JF, Liu CY, Bai Y, Liu Z, Gu H, Hong S, Pyo JY, Jung CK, Kakudo K, Bychkov A. PAX8 expression in anaplastic thyroid carcinoma is less than those reported in early studies: a multi-institutional study of 182 cases using the monoclonal antibody MRQ-50. Virchows Arch 2019; 476:431-437. [PMID: 31732814 DOI: 10.1007/s00428-019-02708-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/26/2019] [Accepted: 10/25/2019] [Indexed: 12/14/2022]
Abstract
Anaplastic thyroid carcinoma (ATC) is an aggressive malignant tumor composed of undifferentiated thyroid follicular cells. Pathological diagnosis of ATC can be challenging as the tumor may show morphological overlap with other neoplasms with anaplastic morphology. Immunohistochemical demonstration of thyroid origin facilitates the diagnosis of ATC. Previous studies using the polyclonal anti-PAX8 antibody 10336-1-AP suggested that PAX8 was the most sensitive marker, expressed in up to 80% of ATC. According to a 2018 NordiQC report, the monoclonal anti-PAX8 antibody MRQ-50 has become the most commonly used anti-PAX8 antibody worldwide. However, validation of this antibody in ATC is lacking. In this study, we recruited 182 ATC cases from seven institutions. Pathology slides were subjected to histology review. PAX8 immunohistochemistry using the MRQ-50 antibody was performed in whole tissue slides (n = 147) or tissue microarray sections (n = 35). We found PAX8 expression in 54.4% of the cases, which was significantly lower than those reported in prior studies with the polyclonal antibody. PAX8 expression was positively correlated with the presence of an epithelial pattern (63.6% vs 37.5%, p = 0.0008) and a coexisting differentiated thyroid carcinoma component (71.6% vs 44.3%, p = 0.0004), but was not associated with age, gender, specimen type, or presence of giant cell and sarcomatoid patterns. In conclusion, we demonstrated PAX8 expression using the monoclonal antibody MRQ-50 in only half of the cases in a large ATC series. Pathologists should be aware that PAX8 expression in ATC is less than those reported in early studies to avoid misdiagnosis.
Collapse
Affiliation(s)
- Wei-An Lai
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Room 5046, Medical Science & Technology Building 5F, No. 201, Sec. 2, Shipai Rd, Taipei, 11217, Taiwan
| | - Jen-Fan Hang
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Room 5046, Medical Science & Technology Building 5F, No. 201, Sec. 2, Shipai Rd, Taipei, 11217, Taiwan.
- School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Chih-Yi Liu
- Division of Pathology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Yanhua Bai
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Zhiyan Liu
- Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, China
- Department of Pathology, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Haiyan Gu
- Department of Pathology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - SoonWon Hong
- Department of Pathology, College of Medicine, Gangnam Severance Hospital, Yonsei University, Seoul, Korea
| | - Ju Yeon Pyo
- Department of Pathology, College of Medicine, Gangnam Severance Hospital, Yonsei University, Seoul, Korea
| | - Chan Kwon Jung
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kennichi Kakudo
- Department of Pathology, Nara Hospital, Faculty of Medicine, Kindai University, Nara, Japan
| | - Andrey Bychkov
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Pathology, Kameda Medical Center, Kamogawa, Chiba, Japan
- Department of Pathology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| |
Collapse
|