Clinical significance of double staining of MIB-1 and AgNORs in primary breast carcinoma.
BACKGROUND
Argyrophilic nucleolar organizer regions (AgNORs) and MIB-1 as proliferating activities have been applied separately to assess the malignant potential of cancer cells. We conducted staining of AgNORs and MIB-1 in 42 surgically-resected invasive breast carcinomas.


METHODS
Paraffin-embedded sections were used for double staining and the mean AgNOR counts in 100 MIB-1-positive and -negative cells were calculated.


RESULTS
The mean AgNOR count in MIB-1-positive cells was significantly higher than in MIB-1-negative ones. AgNOR counts in MIB-1-positive tumors were significantly higher in tumors > or =2 cm and those with positive nodes. Multivariate analysis identified the AgNOR count in MIB-1-positive tumors as the only independent factor related to node metastasis. Survival of patients with lower counts of AgNORs in MIB-1-positive tumors was significantly better compared to those with higher counts.


CONCLUSIONS
Double staining of MIB-1 and AgNORs is useful for predicting lymph node metastasis and prognosis of patients with breast carcinoma.
Kidogawa
Hideo
H
Division of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Nanashima
Atsushi
A
Yano
Hiroshi
H
Matsumoto
Megumi
M
Yasutake
Toru
T
Nagayasu
Takeshi
T
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D034961:Antigens, Nuclear / Q000032:analysis*; D001943:Breast Neoplasms / Q000378:metabolism* / Q000473:pathology* / Q000601:surgery; D048708:Cell Growth Processes; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000032:analysis*; D008875:Middle Aged; D015999:Multivariate Analysis; D009687:Nuclear Proteins / Q000032:analysis*; D011379:Prognosis; D013194:Staining and Labeling / Q000379:methods
D034961:Antigens, Nuclear; D019394:Ki-67 Antigen; D009687:Nuclear Proteins; C051963:nucleolar organizer region associated proteins