ABSTRACT
OBJECTIVE: Degradation of the extracellular matrix and the basement membrane is believed to be associated with tumor invasion and metastasis. To evaluate the roles of Matrix metalloproteinase-2 (MMP-2) in cervical cancer and its utility as a potential diagnostic tumor biomarker, we investigated the expression of MMP-2 in cervical cancer tissue and sera. METHODS: Through the zymography of MMP-2 in cervical cancer tissues from 35 patients, we investigated the extent and distribution of MMP-2. Also, up-regulation of its gene expression was examined by reverse transcription-polymerase chain reaction (RT-PCR) analysis. Then, we attempted to investigate by ELISA serologic responses in the sera obtained from 35 cervical cancer patients, and examined its utility as diagnostic and prognostic tumor marker in cervical cancer by comparing it with conventional tumor markers SCCA and CEA. RESULTS: In zymography, the active form of MMP-2 was detected in 66kDa. In cervical cancer the active form of MMP-2 is more strongly reacted with the substrates than those in normal tissues. Also, the mRNA of MMP-2 was more up-regulated in cervical cancer tissue than in normal one. MMP-2 was detected in the sera of cervical cancer patients, and its amount differed according to clinical situations. While it was not more effective than previous tumor markers SCCA and CEA in diagnosis, it was more useful in monitoring of the cancer. The effect was especially remarkable when it was combined with any other conventional tumor markers. CONCLUSIONS: The results suggest that the expressions of MMP-2 correlate with cervical cancer invasion and metastasis. Also, it may be useful in the monitoring of the cervical cancer lesion.
Subject(s)
Humans , Basement Membrane , Diagnosis , Enzyme-Linked Immunosorbent Assay , Extracellular Matrix , Gene Expression , Matrix Metalloproteinase 2 , Neoplasm Metastasis , RNA, Messenger , Biomarkers, Tumor , Up-Regulation , Uterine Cervical NeoplasmsABSTRACT
OBJECTIVE: We analyzed our experience with total laparoscopic hysterectomy to evaluate the clinical data such as operation time, blood loss, hospital stay, and complications. METHODS: A retrospective study was carried out in 300 women who underwent total laparoscopic hysterectomy (TLH). RESULTS: The most common indications for TLH were uterine myomas, chronic pelvic pain (severe endometriosis), cervical intraepithelial neoplasia. Mean operating time was 90 minutes (range 50-200 min) and hospital stay was 3 days (range 2 days-7 days). The most important factors for the surgery time were uterine size, assistant's skill, presence of adhesions (obliteration of the cul-de-sac due to severe endometriosis). Several techniques were used, including bipolar coagulation of the uterine vessels, and suture of the stump. A special uterine manipulator (RUMITM uterine manipulator with colpotomizer and pneumooccluder balloon) used in all procedures aided in anatomic definition and performing the circumferential colpotomy. We had three bladder injuries during operation which was diagnosed and immediately repaired laparoscopically. We had two cases of ureterovaginal fistula and one case of postoperative ileus. But there were no cases of death, thrombophlebitis neither other pulmonary complications. CONCLUSIONS:Total laparoscopic hysterectomy can be performed safely and effectively when the surgical team is sufficiently trained. And we believe that total laparoscopic hysterectomy offers benefits to the patients in the form of less post-operative pain, shorter time in hospital.
Subject(s)
Female , Humans , Uterine Cervical Dysplasia , Colpotomy , Fistula , Hysterectomy , Ileus , Leiomyoma , Length of Stay , Pelvic Pain , Retrospective Studies , Sutures , Thrombophlebitis , Urinary BladderABSTRACT
Hydrops fetalis is diagnosed when abnormal fluid collections are manifest in two or more fetal compartmnets including abdominal ascite, pleural effusion, percardial effusion, skin edema, polyhydroamniosis and placental edema. Although fetal hydrops was historically most commonly associated with Rh blood group isoimmunization, the availability of Rh immunoglobulin has increased the proportion of fetuses affected due to nonimmune etiologies. Neuroblastoma is a malignant tumor which originates in the autonomous nervous system. Congenital neuroblastoma is the most common solid malignant tumor of the neonatal period, incidence ranges 1:10,000 of all live births, retroperitoneal space being the most frequent localization. We have experienced a case of nonimmune hydrops fetalis with neuroblastoma at 32 weeks of gestation in 39 year old woman and reported that with brief review of related literatures.
Subject(s)
Adult , Female , Humans , Pregnancy , Edema , Fetus , Hydrops Fetalis , Immunoglobulins , Incidence , Live Birth , Nervous System , Neuroblastoma , Pleural Effusion , Retroperitoneal Space , SkinABSTRACT
OBJECTIVE: Metastatic dissemination of epithelial ovarian carcinoma is thought to be mediated via tumor cell exfoliation into the peritoneal cavity, followed adhesion to and invasion through the mesothelium which overlies the contents of the peritoneal cavity. MMP-2 is secreted as a zymogen, the activation of which has been associated with metastatic progression in human ovarian cancer cell lines. METHODS: We have utilized short-term cultures to analyze the effect of specific extracellular matrix proteins, type I collagen. RESULTS: Culturing Caov-4 ovarian cell line on type I collagen led to a significant increase in conversion of the MMP-2,72kD to the MMP-2,66kD, and MT-MMP expression. MT-MMP expression correlates with expression and activation of MMP-2 during malignant progression. Altered MT-MMP expression in ovarian cell lines might contribute to MMP-2 activation, which facilitates invasion of these tumors. CONCLUSION: In summary, we found increased expression of MT-MMP that correlated with increased level of activated MMP-2 and cellular counts in chemoinvasion assay in Caov-3 cell line. But no significant increases in Skov-4 cell line on type I collagen. Conclusion: These data suggest that type I collagen induces MMP-2 activation in part by up-regulation of MT-MMP expression but has a more complicated mode of action involving additional processes.
Subject(s)
Humans , Cell Line , Collagen Type I , Epithelium , Extracellular Matrix Proteins , Matrix Metalloproteinases , Membranes , Ovarian Neoplasms , Peritoneal Cavity , Up-RegulationABSTRACT
No abstract available.