1
|
Hong L, Wu Y, Feng J, Yu S, Li C, Wu Y, Li Z, Cao L, Wang F, Zhang Y. Overexpression of the cell adhesion molecule claudin-9 is associated with invasion in pituitary oncocytomas. Hum Pathol 2014; 45:2423-9. [PMID: 25281028 DOI: 10.1016/j.humpath.2014.08.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 08/05/2014] [Accepted: 08/13/2014] [Indexed: 01/23/2023]
Abstract
Pituitary oncocytoma is a subtype of nonfunctioning pituitary adenomas with the potential to be locally invasive. Currently, surgery is the most effective treatment, whereas functional pituitary adenomas can be treated by drugs. We analyzed the invasiveness of pituitary oncocytomas to identify biomarkers that may be useful for guiding future therapeutic decision making. To identify important biomarkers of pituitary oncocytomas, 20 oncocytomas that were negative for hormone-specific immunostaining were confirmed by anti-mitochondria antibody immunostaining and electron microscopy. Our clinical phenotype data showed a prominent male predilection (85%). These tumors were classified as invasive or noninvasive based on preoperative magnetic resonance imaging, intraoperative records, and pathology slide. We observed significantly different expression profiles between pituitary oncocytomas (n = 3) and normal pituitary glands (n = 3). A total of 1937 genes were differentially expressed between the pituitary oncocytomas and normal pituitary glands. Among these 1937 genes, 954 were up-regulated and 983 were down-regulated in pituitary oncocytomas. The most significantly altered gene, claudin-9 (CLDN9), was further confirmed by quantitative real-time polymerase chain reaction, Western blot, and immunohistochemical staining in 10 invasive pituitary oncocytoma samples and 10 noninvasive pituitary oncocytoma samples. High levels of CLDN9 were found in the pituitary oncocytomas, whereas low levels were detected in normal pituitary glands. In addition, the CLDN9 expression level was higher in invasive oncocytomas compared with noninvasive oncocytomas. Bioinformatics Gene Ontology analysis was performed to better understand the critical role of CLDN9 in the development and progression of oncocytomas. Consequently, CLDN9 may be an important biomarker for invasive pituitary oncocytomas.
Collapse
Affiliation(s)
- Lichuan Hong
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China; School of Medicine, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yonggang Wu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China; Department of Neurosurgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, People's Republic of China
| | - Jie Feng
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Shengyuan Yu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Chuzhong Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Youtu Wu
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Zhenye Li
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Lei Cao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Fei Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China
| | - Yazhuo Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing 100050, People's Republic of China.
| |
Collapse
|
2
|
Guaraldi F, Zang G, Dackiw AP, Caturegli P. Oncocytic mania: a review of oncocytic lesions throughout the body. J Endocrinol Invest 2011; 34:383-94. [PMID: 21301204 DOI: 10.1007/bf03347464] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Oncocytic lesions are characterized pathologically by an abundance of oncocytes, that is by enlarged, eosinophilic, and finely granular cells enriched in mitochondria. They can arise in numerous organs and tissues, often in endocrine glands, and have been associated with hyperplasia, autoimmunity, and neoplasia. The causes and mechanisms that transform a normal cell into an oncocyte remain to be elucidated. Aim of this article is to review the most common oncocytic lesions, highlighting their key pathological features and clinical significance.
Collapse
Affiliation(s)
- F Guaraldi
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | | | | |
Collapse
|
3
|
Dahiya S, Sarkar C, Hedley-Whyte ET, Sharma MC, Zervas NT, Sridhar E, Louis DN. Spindle cell oncocytoma of the adenohypophysis: report of two cases. Acta Neuropathol 2005; 110:97-9. [PMID: 15973544 DOI: 10.1007/s00401-005-1009-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2005] [Revised: 03/09/2005] [Accepted: 03/09/2005] [Indexed: 10/25/2022]
|
4
|
Tatter SB, Edgar MA, Klibanski A, Swearingen B. Symptomatic salivary-rest cyst of the sella turcica. Acta Neurochir (Wien) 1995; 135:150-3. [PMID: 8748806 DOI: 10.1007/bf02187760] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Although ectopic salivary tissue in the posterior pituitary is frequently observed in microscopic examination at autopsy, this tissue is considered clinically insignificant. The authors report a case of sella turcica mass causing progressive menstrual irregularities and mild hyperprolactinemia in a 22-year-old woman. Magnetic resonance imaging revealed a 1.2 x 0.9 cm non-enhancing mass of the postero-inferior sella turcica. The lesion was isointense to brain on T1-weighted images and hypo- to iso-intense on T2-weighted images. Transsphenoidal exploration revealed that the cyst wall consisted entirely of normal appearing salivary gland. The clinical, radiographic, and pathologic features of this unique entity are discussed.
Collapse
Affiliation(s)
- S B Tatter
- Neurosurgical Service, Massachusetts General Hospital, Boston, USA
| | | | | | | |
Collapse
|