title: Cyclin A expression in superficial squamous cell carcinoma of the esophagus and coexisting infiltrated lymphocyte follicle.
abstract: Cyclin A is a protein kinase to act a pivotal role in the mitotic phase of the cell cycle. The purpose of the current study was to elucidate the biological significance of immunohistochemical expression of cyclin A in superficial squamous cell carcinoma (SCC) of the esophagus. Immunohistochemical staining of cyclin A was performed for 45 samples of esophageal superficial SCCs. Clinicopathological features were compared between SCCs with and without cyclin A expression. Twenty-five superficial SCCs (55.6%) had positive expression of cyclin A and the other 20 (44.4%) did not. No significant difference regarding clinicopathological characteristics between esophageal SCCs with and without cyclin A expression. Infiltration of lymphocytes with germinal center cells was observed beneath 17 (68.0%) out of 25 superficial SCCs with cyclin A expression and 15 (75.0%) out of 20 superficial SCCs without cyclin A expression. Although 16 (94.1%) out of 17 superficial SCCs with cyclin A expression were associated with cyclin A expression in germinal center cells in infiltrated lymphoid follicles beneath the tumors, only 2 (13.3%) out of 15 superficial SCCs without cyclin A expression coexisted with cyclin A expression in lymphoid follicles beneath the tumors (P<0.0001). Cyclin A expression in the germinal center cells of the lymphoid follicles beneath the superficial SCCs of the esophagus might be an immunological signal toward the proliferation and progression of the tumors.
authors.affiliation: Department of General Surgery, Fukuoka Dental College Hospital, 814-0193, Fukuoka, Japan. nonta@college.fdcnet.ac.jp
authors.forename: Tadahiro
authors.initials: T
authors.lastname: Nozoe
authors.forename: Daisuke
authors.initials: D
authors.lastname: Korenaga
authors.forename: Motonori
authors.initials: M
authors.lastname: Futatsugi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Saeki
authors.forename: Takefumi
authors.initials: T
authors.lastname: Ohga
authors.forename: Keizo
authors.initials: K
authors.lastname: Sugimachi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D019925:Cyclin A / Q000378:metabolism*; D004938:Esophageal Neoplasms / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008207:Lymphatic Metastasis; D016246:Lymphocytes, Tumor-Infiltrating / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D011379:Prognosis; D015996:Survival Rate
chemical_list: D019925:Cyclin A