No abstract available.
Astrocytes* ; Gene Expression* ; Humans* ; Polymerase Chain Reaction*

PURPOSE: Phospholipase D (PLD) catalyzes the hydrolytic cleavage of terminal phosphate diester bond of glycerophopholipids to produce phosphatidic acid (PA). PLD plays an important role in signal transduction and is known to be involved closely in cancer promotion, inflammation, and other cell responses. In order to evaluate radiation effect in tumor cells, various cells were screened for PLD activities and examined their radiation effects on PLD following gamma- ray irradiation. MATERIALS AND METHODS: PLD activities in 19 species of cell were measured by radioactive isotope method with 1,2 - di [1-14C] phosphatidylcholine in the presence of oleate. Among the cell lines examined, VERO 76, L 1210 and P 388 were selected and examined for their effects of metal ions and agonists on PLD activities before and after irradiation by Co-60 teletheraphy unit. RESULTS: The activities of oleate-PLD were observed in 11 species among 19 cell lines examined. VERO 76 and L 1210 cells showed that the PLD activity increased immediately after irradiation and reached to 150~200% of the control levels. The activation of PLD in response to gamma-ray was maximum at 20 Gy. In irradiated VERO 76, the stimulatory effect of Mg2+ was reduced and the activation of PLD by agonists in irradiated cells vary from those of the control cells. CONCLUSION: The activation effect of irradiation on PLD activity observed strongly implies that the PLD activity is closely related to the phenomena of cell necrosis. Therefore the cell lines examined here could provide a good source for the study of radiobiology that cover from cell death to cancer promotion.
Cell Death ; Cell Line* ; Inflammation ; Ions ; Necrosis ; Oleic Acid ; Phosphatidic Acids ; Phosphatidylcholines ; Phospholipase D ; Radiation Effects ; Radiobiology ; Signal Transduction

PURPOSE: MEN1 gene mutation causes multiple endocrine neoplasia type 1. It also suggests that somatic MEN1 gene mutation plays a role in sporadic endocrine tumor. In this study, we examined whether somatic mutations of MEN1 gene are responsible for sporadic parathyroid tumors and correlate with clinical manifestations of parathyroid tumors. METHODS: Somatic mutation of MEN1 gene in the formalin-fixed, paraffin-embedded parathyroid tumor tissue from 8 adenomas, 2 carcinomas and 1 hyperplasia were analyzed by direct sequencing. Clinicopathological parameters were reviewed from medical records and compared with the mutational data. RESULTS: Eight of eleven (73%) sporadic parathyroid tumors had somatic MEN1 mutations of 14 different types. In the 14 types, 13 were a point mutation which is composed of 8 missense mutations, 2 nonsense mutations and 3 silent mutations. One of 14 types is a frameshift deletion of 27 base pairs in exon 2. Somatic mutation was frequent in the exon 2 and exon 10. Four types of polymorphism were found. There was no correlation between the presence of mutations and clinicopathological phenotype of parathyroid tumors. CONCLUSION: This result suggests that somatic mutation of MEN1 gene plays a definite role in sporadic parathyroid tumor formation.
Adenoma ; Base Pairing ; Codon, Nonsense ; Exons ; Hyperplasia ; Medical Records ; Multiple Endocrine Neoplasia Type 1 ; Mutation, Missense ; Phenotype ; Point Mutation

The human hand is a complex structure that performs various functions for activities of daily living and occupations. This paper presents a literature review on the methodologies used to evaluate hand functions from a biomechanics standpoint, including anthropometry, kinematics, kinetics, and electromyography (EMG). Anthropometry describes the dimensions and measurements of the hand. Kinematics includes hand movements and the range of motion of finger joints. Kinetics includes hand models for tendon and joint force analysis. EMG is used on hand muscles associated with hand functions and with signal-processing technology.
Activities of Daily Living ; Anthropometry ; Biomechanical Phenomena ; Electromyography ; Finger Joint ; Hand* ; Humans ; Joints ; Kinetics ; Muscles ; Occupations ; Range of Motion, Articular ; Tendons

No abstract available.
Adult* ; Fetus* ; Humans ; Humerus* ; Radius* ; Ulna*

No abstract available.
Body Weight* ; Diet* ; Exercise Therapy* ; Humans

From Jan. 1982 to Dec. 1990, 77 patients with rectal cancer were treated with curative surgical resection followed by postoperative adjuvant irradiation alone or combined with chemotherapy at the Department of Radiation Oncology, Korea University Hospital (KUH). Fifty-four(54/77, 70.1%) patients underwent abdominoperineal resection, 20(20/77, 26%) patients underwent low anterior resection, and 3(3/77, 3.9%) patients had wide excision only. Thirty-nine(39/77, 50.5%) received sequential chemotherapy (2 cycles to 12 cycles). The 5-year survival rate for the entire group was 43%: 78.2% in B2+B3, 39.4% in stage C1+C2+C3. Survival rates decreased with increasing penetration of the bowel wall by tumor and the presence of regional lymph node metastasis. Those patients survival who underwent an abdominoperineal resection also experienced a significant decrease in compared to low anterior resection(23.1% vs. 63.8% in 5-year survival, p<0.05). Local failure occurred in 15 (19.5%) out of the 77 patients overall, 1 (5.3%) of 19 in stage B2+B3, and 14(24.1%) of 58 in Stage C1+C2+C3. Presacral area was most common site of local failure (8/17, 47.1%). Distant failure occurred in 13(16.9%) of 77 patients. The most frequent site of distant failure was the lung followed by the liver, the bone, and the brain. Combined locoregional and distant failure occurred in 2 (2.6%) of 77 patients. Pathological confirmation of perirectal fat and/or regional lymph node involvement resulted in a significant decrease in survival and local control.
Brain ; Drug Therapy ; Humans ; Korea ; Liver ; Lung ; Lymph Nodes ; Neoplasm Metastasis ; Radiation Oncology ; Rectal Neoplasms ; Survival Rate

No abstract available.
Osteomyelitis* ; Skull Base* ; Skull*

We evaluated the results of twelve total elbow arthroplasties that had been performed from Feb. 1986 to Mar. 1993 in ten patients. The duration of follow-up averaged three years two months(range, one year to seven years one month). There were six females and four males. Two females had bilateral procedures. The average age at the time of the operation was 35.3 years(range, 22 to 53). Five patients had severe rheumatoid arthritis, four patients had fracture sequelae around elbows and one patient had sequele of tuberculous arthritis. Total elbow arthroplasty had been performed for improving the range of motion and relief of pain. Total elbow arthroplasties had been performed in six cases of total ankylotic elbows and in six cases who complained severe painful limitation of motion of the elbow joints. Preoperatively, ankylotic group were fixed by 30 degrees of flexion on an average. In painful elbow group, the average total range of motion was 68 degrees. The prosthesis which were used in total elbow arthroplasties were semiconstrained type in nine cases and noncostrained in three cases. Most of the patients had relief of pain. Postoperative complications were permanent ulnar nerve palsy in one case, superficial infection in one case and dislocation in one case. Total gain of range of motion(ROM) was 17 degrees in painful elbow group and 102 degrees in ankylotic elbows. Total elbow arthroplasty was effective method for improvement of range of motion in ankylotic elbows and relief of pain in elbows which had painful limitation of motion.
Ankylosis ; Arthritis ; Arthritis, Rheumatoid ; Arthroplasty ; Dislocations ; Elbow Joint ; Elbow ; Female ; Follow-Up Studies ; Humans ; Male ; Methods ; Postoperative Complications ; Prostheses and Implants ; Range of Motion, Articular ; Ulnar Neuropathies

Chung-Ang University Penile Squamous Carcinoma cell line (CUPE-1) was established from a lymph node metastasis of human penile squamous cell carcinoma (SCC). CUPE-1 grew as adherent monolayer with a defined doubling time of 24 hours. CUPE-1 showed epithelial characterization on inverted and light microscopy and showed well developed desmosomes and tonofilaments or electron microscopy. CUPE preserved cytokeratin on immunohistochemical staining. CUPE expressed the receptor of epidermal growth factor (EGF), which stimulated the proliferation of CUPE-1 CUPE-1 showed strong tumorigenecity and/or metastatic ability when subcutaneously and intraperitoneally implanted into the nude mouse. CUPE-1 produced tumor associated antigen-4 (TA-4), a tumor marker for SCC of uterine cervix, both in vitro and in vivo. In addition, the serum level-of TA-4 were specifically increased in patients with penile SCC. These results indicate that CUPE-1 retains the characteristics of human penile SCC and could provide an excellent model for the basic research and development of new therapeutic modalities of penile cancer, and that TA-4 may become a valuable tumor marker of penile SCC.
Animals ; Carcinoma, Squamous Cell* ; Cell Line ; Cervix Uteri ; Desmosomes ; Epidermal Growth Factor ; Female ; Humans ; Intermediate Filaments ; Keratins ; Lymph Nodes ; Male ; Mice ; Mice, Nude ; Microscopy ; Microscopy, Electron ; Neoplasm Metastasis ; Penile Neoplasms