Affiliation:
1. Department of Neurosurgery, Shenzhen University General Hospital, Shenzhen, Guangdong, China
2. Department of Neurosurgery, Fuzhou General Hospital, Fujian Medical University, Fuzhou, Fujian, China
3. Department of Gastroenterology, Fuzhou General Hospital, Fujian Medical University, Fuzhou, Fujian, China
4. Department of Pathology, Fujian Provincial Maternity and Children's Hospital, Fuzhou, Fujian, China
5. Clinical Research Center for Neurological Disorders, Shenzhen University, Shenzhen, Guangdong, China
Abstract
Aim. To investigate the expression of glucose transporter 3 (GLUT3) and hypoxia-inducible factor-1α protein (HIF-1α) in meningiomas and analyze the correlation between GLUT3 and HIF-1α expression with the pathological grade of peritumoral brain edema (PTBE) of meningiomas. Methods. In this cross-sectional study, we analyzed meningioma specimens from 160 patients collected from January 1, 2014, to December 1, 2017, by dividing them into a low-grade (WHO I) or high-grade (WHO II and WHO III) group. Immunohistochemical analyses were used to detect the expression level of GLUT3 and HIF-1α in the tumor specimens. Results. The proportion of GLUT3-positive staining in tumors sized <4 cm, 4–6 cm, and>6 cm was 35.9% (37/103), 63.6% (28/44), and 53.8% (7/13), respectively (P=0.007). The proportion of HIF-1α-positive staining in tumors sized <4 cm, 4–6 cm, and >6 cm was 41.7% (43/103), 68.2% (30/44), and 38.5% (5/13), respectively (P=0.010). The proportion of GLUT3-positive staining in the high-grade group and low-grade group was 70.8% (34/48) and 33.9% (38/112), respectively (P<0.001). The proportion of HIF-1α-positive staining in the high-grade group and low-grade group was 62.5% (30/48) and 42.9% (48/112), respectively (P=0.023). GLUT3-positive expression in meningioma PTBE grades 0, I, II, and III was 20.3% (13/64), 41.2% (14/34), 63.6% (21/33), and 82.8% (24/29), respectively (Bonferroni-corrected, P<0.001, α/6=0.008). HIF-1α-positive expression in meningioma PTBE grades 0, I, II, and III was 34.4% (22/64), 47.1% (16/34), 54.5% (18/33), and 75.9% (22/29), respectively (Bonferroni-corrected, P=0.003, α/6=0.008). Spearman’s correlation analysis revealed a correlation between the expression of GLUT3 and HIF-1α in meningiomas (r=0.463, P<0.001). Multivariate analysis revealed that GLUT3-positive expression, HIF-1α-positive expression, and high pathological grade were associated with the development of PTBE (P<0.05). Conclusions. GLUT3 and HIF-1α expression in meningiomas was closely related to the tumor size, pathological grade, and PTBE. This study is the first to report a unique map-like multifocal GLUT3 staining pattern in meningiomas.
Funder
Natural Science Foundation of Fujian Province
Subject
General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine