title: [Breast cancer immunohistochemical features in different age groups].
abstract: We investigated 52 incidents of the breast cancer to determine their immunological profile in the different age groups. Breast tissue-specific and at the same time oncologically important immunohistochemical markers: estrogen- and progesterone receptors (ER, PR), oncoprotein HER-2/neu, protein PS2, markers of angiogenesis CD31 and mitotic activity Ki-67 were investigated. Patients were divided into 3 group: I - patients under 45 years (23), II - from 46 to 55 (14), III - 56 year and older (15). Investigations showed that expression of the immunohistochemical markers was dissimilar in the different age groups. In the I group of the estrogen- and progesterone receptors (ER, PR) and protein PS2 was lower, in contrast to the expression of HER-2/neu, CD31 and Ki-67 were higher then in the elder group. Expression of the estrogen- and progesterone receptors (ER, PR) and protein PS2 markers was increasing with the patient age, and significant decrease of the HER-2/neu, CD31 and Ki-67 was observed. This indicates that in younger patients cancer is more aggressive.
authors.forename: K G
authors.initials: KG
authors.lastname: Burnadze
authors.forename: I D
authors.initials: ID
authors.lastname: Tavzarashvili
authors.forename: U A
authors.initials: UA
authors.lastname: Gabuniia
authors.forename: M Iu
authors.initials: MIu
authors.lastname: Mchedlishvili
mesh_terms: D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000276:immunology; D001943:Breast Neoplasms / Q000276:immunology* / Q000378:metabolism*; D017252:CD3 Complex / Q000276:immunology*; D018398:Homeodomain Proteins / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D019394:Ki-67 Antigen / Q000235:genetics*; D008875:Middle Aged; D018160:Receptors, Cytoplasmic and Nuclear / Q000378:metabolism*; D054339:Steroidogenic Factor 1; D014157:Transcription Factors / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D017252:CD3 Complex; D018398:Homeodomain Proteins; D019394:Ki-67 Antigen; D018160:Receptors, Cytoplasmic and Nuclear; D054339:Steroidogenic Factor 1; D014157:Transcription Factors