To understand the expression of hoth TGF-beta l and II ligands and the receptors, artificial fracture was made on rat femur. Fracture callus and epiphyseul plate were stained immunohistochemically on 3rd. 7th, 14th, 21st, 42nd and 56th day after trauma. Polyclonal antibody was used to stain TGF-beta I and II ligands and receptors. At epiphyseal plate, both ligand and receptor were expressed from each cell in proliferating and maturing zone. But there was no difference between type I and II except expression time. TGF-beta II ligand and receptor were expressed earlier: they were expressed mostly by the cells at the zone of proliferating cartilage but TGF-beta1 ligand and receptor were expressed mostly hy the cells at zone of maturing cartilage. At fracture site, TGF-beta expression was observed from 3rd day after trauma and it reached its maximum intensity at 2 weeks. It decreased thereafter and disappeared at 6 weeks after trauma. In enchondral ossification area, TGF-beta expressing cells were scattered throughout the enchondral mass. In intramembranous ossification area, the ligands and receptors were expressed from the osteohlasts just heneath the periosteum. ln summary, TGF-beta ligands and receptors were expressed at epiphyseal plate and fracture callus. There was no difference between TGF-beta 1 and 2 expres.ion except the appearance time at epiphyseal plate. We could not draw any conclusion about ligand and rcceptor mechanism with this immunohistochemical staining.
Animals ; Bony Callus* ; Cartilage ; Femur ; Growth Plate* ; Ligands* ; Periosteum ; Rats ; Receptors, Artificial ; Transforming Growth Factor beta ; Transforming Growth Factor beta1

No abstract available.
Anterior Cruciate Ligament*

TGF-p receptor mutation is now considered as one of the carcinogenic process of many tumors. To evaluate whether there is an abnormality in TGF-p type II receptor in osteosarcoma cell lines, we performed Northern analysis, cross-linking assay, luciferase activity and TGF-p growth inhibition assay in four osteosarcoma cell lines: G292, U202, HOS and SaOS. We also transfected the tumor cells with normal TGF-p type II receptor sequence to find if there is a possibility of gene therapy in osteosarcoma. In Northern analysis, Type II receptor expressions were decreased at SaOS, U202 and HOS cell lines. In cross-linking assay, all four cell lines didnt show type II receptor at their cell surface. The growth of these tumor cells were not suppressed by TGF-p. From these findings, we concluded that the normal production of TGF-p type II receptor was impaired in osteosarcoma. The transfection of these tumor cells with normal type II receptor sequence restored growth inhibition by TGF-p. This means even though TGF-p type II receptor is abnormal in osteosarcoma, we can restore its function by transfection of normal sequence. We think that the TGF-p type Il receptor gene therapy can be one of the treatment method for osteosarcoma in the future.
Cell Line* ; Genetic Therapy ; Luciferases ; Osteosarcoma* ; Transfection

Although the characteristic cytologic features of melanoma have been well described, the diagnosis of metastatic melanoma by fine needle aspiration cytology (FNAC) may be difficult in the case of amelanotic melanoma and in the absence of awareness of clinical history. Furthermore, when the breast is the site of initial presentation, it could simulate a primary breast carcinoma leading to misdiagnosis. The recognition of metastatic malignant melanoma in FNAC material is essential to avoid an unnecessary mastectomy and to ensure appropriate chemotherapy. We experienced a case of metastatic melanoma of breast which presented as solitary breast mass in a 56-year-old woman. She had a history of surgical excision of right foot for melanoma one year ago. The cytologic smears were composed of noncohesive epithelioid cells with round or eccentric nuclei, bi-or multi-nucleation, prominent nucleoli, fine chromatin, and intranuclear inclusions. The cytoplasm of tumor cells had scanty melanin pigment but were diffusely positive for S-100 protein.
Biopsy, Fine-Needle* ; Breast Neoplasms ; Breast* ; Chromatin ; Cytoplasm ; Diagnosis ; Diagnostic Errors ; Drug Therapy ; Epithelioid Cells ; Female ; Foot ; Humans ; Intranuclear Inclusion Bodies ; Mastectomy ; Melanins ; Melanoma* ; Melanoma, Amelanotic ; Middle Aged ; S100 Proteins

OBJECTIVE: We have attempted to identify prognostic factors regarding CC/hMG ovarian stimulation and IUI in infertility and to seek factors valuable in planning infertility treatment and predicting the success rate of IUI therapy in individual couples. METHODS: The variables selected for initial analysis were female age, duration of infertility, type and diagnosis of infertility, number of pre-ovulatory follicles (>or=16 mm, >or=18 mm follicles), thickness of the endometrium, number of the treatment cycles, result of semen analysis, ovarian stimulation protocol, number of IUI. A logistic regression method was used to identify significant variables that contribute to the success of CC/hMG/IUI treatment. RESULTS: Logistic regression analysis revealed four predictive variables as regards pregnancy: duration of infertility (p=0.011), infertility etiology (p=0.049), number of IUI (p=0.004), method of ovarian stimulation (p=0.042). A cause of infertility, especially ovarian dysfunction other than tubal factor, a shorter duration of infertility (<6 years) and CC/hMG minimal ovarian stimulation protocol with double IUI resulted in better treatment success in CC/hMG with IUI cycles. CONCLUSION: We concluded that careful patient selection criteria coupled with successful ovarian stimulation and increased sperm count in female reproductive tract is the model for CC/hMG/IUI sucess.
Diagnosis ; Endometrium ; Family Characteristics ; Female ; Humans ; Infertility ; Insemination* ; Logistic Models ; Ovulation Induction* ; Patient Selection ; Pregnancy ; Semen Analysis ; Sperm Count

No abstract available.
Appendicitis* ; Purpura, Schoenlein-Henoch*

No abstract available.
Blood Transfusion* ; Humans ; Infant*

No abstract available.
Humans ; Male ; Spinal Cord Injuries* ; Spinal Cord*

OBJECTIVES: Chromosomal anomalies are common disease entity among genetic diseases. But there are scanty reports about the status of chromosomal abnormalities in Korean. In addition, the comprehensive multi-center study of chromosomal abnormalities in Korean has never been performed. METHODS: We have collected 1,793 cases (394 abortuses; 198 chorionic villi; 1,060 amniotic fluid cells; 141 fetal blood), which showed abnormal karyotype results from twenty three cytogenetic centers in Korea from the year of 1977 to 1999. RESULTS: In abortuses, numerical chromosomal abnormalities was 85%, and structural abnormalities was 13% and the most frequent anomaly was trisomy 16. In chorionic villi, numerical anomaly was 60.0% and structural anomaly was 31.3% and the most frequent karyotype was Down syndrome. In amniotic fluid cells, structural anomaly exceeded the number of numerical anomaly and the most frequent anomaly was Down syndrome. In fetal blood, numerical anomaly was 63.8% and the most frequent karyotype was trisomy 18 (23.4%) CONCLUSIONS: This may be the first comprehensive and multi-center study in Korea. The proportion of the abnormal karyotypes in each specimens was different from each other. Based on this study, the more comprehensive study should be performed to all the Korean population.
Abnormal Karyotype ; Amniotic Fluid ; Chorion* ; Chorionic Villi* ; Chromosome Aberrations ; Cytogenetics ; Down Syndrome ; Female ; Fetal Blood* ; Karyotype ; Korea ; Trisomy

Follow-Up Studies ; Fracture Fixation ; Humans ; Malocclusion ; Mandible ; Recurrence