E-cadherin (E-CD), a Ca2+ -dependent adhesion molecule, plays a major role in the maintenance of intercellular junctions in normal epithelial cells in most organs. Recently, a correlation has been observed between a loss of E-CD and increased invasiveness of neoplastic cells. In this study, E-CD expression in the breast carcinoma was investigated using monoclonal antibody, anti-E-CD by immunohistochemical method. Expression of E-CD were evaluated in 57 breast carcinomas and correlated with their tumor grade, lymph node involvement, and hormonal receptor status. Histological types included in this study were 54 invasive ductal carcinomas (IDCs) of otherwise not specified and 3 invasive lobular carcinomas. Cases of histologic grade I IDC were 6, grade II 30, and grade III 18. Of 54 IDCs 39 (72.2%) showed moderate to strong linear staining at the cell borders regardless of their histologic grade, status of lymph node metastasis, and status of hormone receptor. Staining intensity of E-CD was reduced in 54 cases (83%) of IDC when compared with that of normal or benign breast lesions (P<0.01). All seven cases of intraductal carcinoma, which were included in 54 IDCs showed one or two grade reduced expression of E-CD than that of infiltrative lesions. Three invasive lobular carcinomas showed strong (1 case), moderate (1 case), and negative reactivity (1 case). The data indicated that loss of E-CD expression is a crucial event in the development of breast carcinoma.
Breast Neoplasms* ; Breast* ; Cadherins* ; Carcinoma, Ductal ; Carcinoma, Intraductal, Noninfiltrating ; Carcinoma, Lobular ; Epithelial Cells ; Intercellular Junctions ; Lymph Nodes ; Neoplasm Metastasis

In order to study immunological responses in psoriatic lesions, direct immunofluorescence(DIF) findings in stratum corneum of psoriatic lesions are compared with histopathological changes. The results are summerized as follows: 1) Deposition of Igs or C 3 in stratum corneum of psoriatic lesions was demonstrated in 14(56%) of 25 psoriasis patients. IgG was present in 40% IgA in 48%, IgM in 24%, and C 3 in 32%. However, DIF findings are negative in the str,atum corneum in the uninvolved skin of psoriasiis. In control groups of 12 cases of various skin diseases, DIF findings were negative in the stratum corneum except 1 case of a patient with acne rosacea. 2)DIF findings in 22 cases of histopathologic changes of psoriatic lesions were found in 50% of hyperkeratosis in 48% of parakeratosis in 50% of Munro microabscess, in 50%, of spongiform pustule, and in 57% of the absence of stratum granulosum: ie, about only 50% were positive in DIF results. Histopathologic changes in 11 cases of positive DIF finding in psoriatic lesions were hyperkeratosis in 100%, parakeratosis in 91%, Munro microabscess in 64%, spongiform pustule in 55%, and the absence of stratum granulosum in 73%.
Humans ; Immunoglobulin A ; Immunoglobulin G ; Immunoglobulin M ; Parakeratosis ; Psoriasis ; Rosacea ; Skin ; Skin Diseases

No abstract available.
Leprosy*

No abstract available.
Breast* ; Polyarteritis Nodosa*

No abstract available.
Adenocarcinoma*

The case of a 56-year-old woman with a keratoacarithoma(KA) of the labial mucosa is herein reported, The tumor was excised and the pathological features were characteristic of a KA, This case is reported because the oral mucosa is such an unexpected location for solitary KA and the labial mucosa of this patient received chronic actinic damage, which suggested an etiological relationship. Follow-up examination of the patient after four months showed no recurrence.
Actins ; Female ; Follow-Up Studies ; Humans ; Keratoacanthoma* ; Middle Aged ; Mouth Mucosa ; Mucous Membrane* ; Recurrence ; Solar System*

No abstract available.
Brain Abscess* ; Brain*

No abstract available.
Brain Abscess* ; Brain*

The objective of this study was to establish a good methodology to isolate single smooth muscle cells that are alive and respond properly to pharmacological agents. Canine urinary bladders were employed as the source of single cells, and acetylcholine, atropine and imipramine were used as indicators of pharmacological responsiveness. Imipramine, an antidepressant drug exhibited the anticholinergic and calcium antagonizing properties on rat detrusor muscle. To establish a control value for a further experiment to elucidate the mechanism of action of imipramine on detrusor muscle, we measured the concentration-response of single cells to acetylcholine in the presesnce of imipramine by length of the cells and compared the result with the response in the presence of atropine. Tiny chops of smooth muscle taken from anesthetized canine urinary bladder were incubated in collagenase solution at 36℃ for 17-20 minutes. The collagenase solution included collagenase 1.2 mg/ml, soybean tryspin inhibitory 0.08 mg/ml, bovine serum albumin 2% in 10 ml Krebs-Henseleit buffer solution aerated with a consistent breeze of 95/5% O2/CO2 to maintain the pH at 7.4. After washing with plain K-H solution on 450 mesh, cells were dissociated from the digested tissue for 12-15 minutes. Cell suspension was transfered in 5 ml test tubes and acetylcholine was added for the final concentration to be 10⁻¹⁴~10⁻⁹M. To find the optimal time to fix the cells to determine the contractile responses, 1% acrolein was added 5, 10, 20, 30, 60 and 120 seconds after the administration of ACh. The length of cells fixed by acrolein were measured by microscaler vis CCTV camers on phaes-contrast microscope. The average length of 50 cells from a slide glass was taken as the value of a sample at the very concentration point. Single cells were isolated from canine detrusor. The length of untreated cells varied from 82 µm to 94 µm. The maximal response to actylcholine 10E-9M was accomplished within 5 seconds of exposure, and the shortening was 19±3%. Atropine reduced the contraction of the cells concentration-dependently. Lmipramine which exerts a cholinergic blocking action on some smooth muscles also reduced the contraction concentration-dependently and by a similar pattern as atropine. These findings document that imipramine may exerts a cholinergic blocking activity in the single smooth muscle cells isolated from canine urinary bladder.
Acetylcholine ; Acrolein ; Animals ; Atropine ; Calcium ; Collagenases ; Glass ; Hydrogen-Ion Concentration ; Imipramine* ; Muscle, Smooth ; Myocytes, Smooth Muscle ; Rats ; Serum Albumin, Bovine ; Soybeans ; Urinary Bladder

No abstract available.
Epilepsy*