C-type natriuretic peptide (CNP), a member of natriuretic peptide family, is mainly synthesized in the endothelium and central nervous system. But CNP is also involved in the growth and differentiation of other peripheral organs. Although we have reported the local synthesis and localization of CNP in the adult submandibular glands (SMG), it is not known that the expression and biological activity of CNP following the morphogenesis, differentiation and aging. This study aimed to examine the expression of CNP and its receptors in the developing and differentiating stages of mouse SMG, and the changes of biological activity of its receptors with aging. The SMG, obtained from 14, 16, 18 days-old embryos (E) and 1 day, 2 weeks, 1, 2, 12, and 24 month-old C57BL/6N mouse, were processed for RT-PCR, in situ hybridization, immunohistochemistry and cGMP assay. CNP was strongly expressed in the epithelial clusters of primitive SMG, which was maintained before birth but was markedly decreased after birth. CNP was localized in the intercalated duct and granular convoluted tubules of adult SMG, where NPRC was specifically expressed but NPRB was not. CNP mRNA was gradually decreased from E16 to 2 M but ANP mRNA was opposed. NPRB and NPRC were the same pattern of the expression of CNP but NPRA was weakly expressed. In addition, CNP mRNA was also expressed in the craniofacial tissues such as tooth germs, tongue, premaxilla and bone forming area in which NPRC was specifically expressed but NPRB was not. In the SMG of 2 M, the membrane of duct cells markedly produced cGMP by CNP whereas acini produced cGMP by ANP and BNP rather than CNP. The biological activity of cGMP production of SMG gradually decreased with age. cGMP production was dominant by CNP in SMG of 1M but was by ANP after 2M. These results shows that CNP may play roles both in the morphogenesis and differentiation via NPRC and in the maintenance of duct system via NPRB in the mouse SMG and that the biological activity of its receptors may decreased with aging.
Adult ; Aging* ; Animals ; Atrial Natriuretic Factor ; Central Nervous System ; Child, Preschool ; Embryonic Development* ; Embryonic Structures ; Endothelium ; Female ; Humans ; Immunohistochemistry ; In Situ Hybridization ; Membranes ; Mice* ; Morphogenesis ; Natriuretic Peptide, C-Type* ; Parturition ; Pregnancy ; Receptors, Peptide* ; RNA, Messenger ; Submandibular Gland* ; Tongue ; Tooth Germ

PURPOSE: This study was undertaken to reveal the molecular mechanism underlying sulindac-induced apoptosis in the human colon cancer cell line HT-29 (mutant p53). METHODS: Apoptosis was determined by using Hoechst 33342 staining, and translocation of proteins was established by using immunofluorescence, immunoelectron microscopy, and Western blotting after ultra- fractionation. RESULTS: This type of apoptosis was associated with decreased mitochondrial membrane potential, a translocation of the apoptosis-inducing factor (AIF) to the nucleus, and morphological evidence of nuclear condensation. However, DNA electrophoresis did not elucidate the ladder pattern of DNA fragments. Instead, a pulse-field gel electrophoresis showed that sulindac led to disintegration of nuclear DNA into-high- molecular-weight DNA fragments of about 100~300 kbp. CONCLUSIONS: Our findings indicate that sulindac induces large-scale DNA fragmentation, suggesting a predominantly AIF-mediated cell-death process, through translocation of the AIF to the nucleus in HT-29 cells.
Apoptosis Inducing Factor ; Apoptosis* ; Blotting, Western ; Cell Line ; Colonic Neoplasms ; DNA Fragmentation* ; DNA* ; Electrophoresis ; Fluorescent Antibody Technique ; HT29 Cells* ; Humans ; Membrane Potential, Mitochondrial ; Microscopy, Immunoelectron ; Sulindac

PURPOSE: Intraoperative colonic distension is associated with postoperative ileus, which contributes to a delayed hospital discharge. A randomized and prospective study was conducted to evaluate the usefulness of intraoperative needle decompression of the colon (IDC) during a radical gastrectomy for gastric cancer. METHODS: Fifty patients that had received subtotal or total gastrectomy for gastric cancer were randomly assigned to either a non-decompression (n=27) or a decompression group (n=23). Prior to the main procedure, the transverse or right colon was pulled up, and a 19-gauge disposable needle connected to suction was introduced to the colon through the taenia site of the anterior wall. Any gas that collected in the colon was aspirated. The time to the first postoperative passage of flatus or feces was measured precisely in order to evaluate the restoration of bowel function. Additional measures of the outcome were the operation time, the complication rate and the length of hospital stay. RESULTS: Demographic details, pathologic features, operation times, complication rates and the length of hospital stay were not different between the two groups. A collapsed colon was required for good surgical exposure and easy manipulation. No unexpected complications related to the procedure were found. The average time to the first flatus was 6.8 hours sooner in the decompression group than in the non-decompression, although this result was not statistically significant. CONCLUSION: This technique is a simple and safe procedure for intraoperative colon decompression during a radical gastrectomy.
Colon* ; Decompression* ; Feces ; Flatulence ; Gastrectomy* ; Humans ; Ileus ; Length of Stay ; Needles* ; Prospective Studies* ; Stomach Neoplasms ; Suction ; Taenia

PURPOSE: Metastatic breast cancer patients are usually exposed to taxane and anthracycline as neoadjuvant, adjuvant and palliative chemotherapeutic agents. This study was designed to determine the efficacy and safety of the use of a gemcitabine and cisplatin (GP) combination treatment in patients with metastatic breast cancer that were pretreated with anthracycline and taxane. MATERIALS AND METHODS: We evaluated the use of a GP regimen (1,000 mg/m2 gemcitabine administered on days 1 and 8 plus 60 mg/m2 cisplatin administered on day 1 every 3 weeks) in 38 breast cancer patients who had received prior chemotherapy with anthracycline and taxane as an adjuvant or neoadjuvant therapy, or as a palliative therapy. RESULTS: The median patient age was 49 years (age range, 35~69 years). The overall response rate was 28.9% in 11 patients (95% confidence interval [CI], 14~44%). The median time to progression was 5.2 months (95% CI, 3.6~6.8 months). Median survival was 19.5 months (95% CI, 11.2~27.8 months). Major grade 3/4 hematological toxicity was due to leukopenia (36 of 157 cycles, 23.1%). Non-hematological toxicity was rarely severe; grade1/2 nausea and vomiting were observed in 37.8% of the patients. There were no treatment related deaths. CONCLUSIONS: Our results suggest that the use of gemcitabine plus cisplatin appears to be effective and has an acceptable toxicity profile in patients with advanced breast cancer that have been pretreated with anthracycline and taxane.
Breast ; Breast Neoplasms ; Bridged Compounds ; Cisplatin ; Deoxycytidine ; Humans ; Leukopenia ; Nausea ; Neoadjuvant Therapy ; Taxoids ; Vomiting

We report a rare case of traumatic abdominal wall hernia (TAWH) caused by a traffic accident. A 47-year-old woman presented to the emergency room soon after a traffic accident. She complained of diffuse, dull abdominal pain and mild nausea. She had no history of prior abdominal surgery or hernia. We found a bulging mass on her right abdomen. Plain abdominal films demonstrated a protrusion of hollow viscus beyond the right paracolic fat plane. Computed tomography (CT) showed intestinal herniation through an abdominal wall defect into the subcutaneous space. She underwent an exploratory surgery, followed by a layer-by-layer interrupted closure of the wall defect using absorbable monofilament sutures without mesh and with no tension, despite the large size of the defect. Her postoperative course was uneventful.
Abdominal Injuries/complications ; Abdominal Wall/pathology/*surgery ; Female ; Hernia, Abdominal/etiology/radiography/*surgery ; Humans ; Middle Aged ; Tomography, X-Ray Computed ; Treatment Outcome

PURPOSE: The patients with metastatic breast cancer are routinely exposed to taxane and anthracycline as neoadjuvant, adjuvant, and palliative chemotherapeutic agents. This study was designed to evaluate the efficacy and safety of using a vinorelbine and ifosfamide (VI) combination treatment in patients with taxane-resistant metastatic breast cancer. METHODS: We evaluated the use of a VI regimen (25 mg/m2 vinorelbine administered on days 1 and 8 plus 2,000 mg/m2 ifosfamide administered on day 1-3 every 3 weeks) for breast cancer patients who evidenced tumor progression after palliative taxane treatment. RESULTS: Overall, 35 patients were enrolled in this study: Their median age was 50 years (range, 38-72 years). The overall response rate was 40.0% (14 patients; 95% confidence interval [CI], 23-57%). The median time to progression was 4.5 months (95% CI, 3.5-5.4 months). The median overall survival was 18.3 months (95% CI, 12.9-23.6 months). In the 190 cycle of treatment, the incidence of grade > or =3 neutropenia, anemia, and thrombocytopenia was 29.3%, 4.2%, and 2.0%, respectively. Neutropenic fever was noted in 6 cycles (3.1%). The non-hematological toxicities were not severe: grade 1 or 2 vomiting was observed in 22.8% of the patients. CONCLUSION: Our results suggest that the use of vinorelbine and ifosfamide (VI) combination chemotherapy appears to be effective and it showed an acceptable toxicity profile in the patients with taxane-resistant metastatic breast cancer.
Anemia ; Breast ; Breast Neoplasms ; Bridged Compounds ; Drug Therapy, Combination ; Fever ; Humans ; Ifosfamide ; Incidence ; Neutropenia ; Taxoids ; Thrombocytopenia ; Vinblastine ; Vomiting

BACKGROUND/AIMS: This study evaluated the clinical outcomes of balloon-occluded retrograde transvenous obliteration (BRTO) for the treatment of hemorrhage from gastric varices (GV) in Korean patients with liver cirrhosis (LC). METHODS: We retrospectively analyzed data from 183 LC patients who underwent BRTO for GV bleeding in 6 university-based hospitals between January 2001 and December 2010. RESULTS: Of the 183 enrolled patients, 49 patients had Child-Pugh (CP) class A LC, 105 had CP class B, and 30 had CP class C at the time of BRTO. BRTO was successfully performed in 177 patients (96.7%). Procedure-related complications (e.g., pulmonary thromboembolism and renal infarction) occurred in eight patients (4.4%). Among 151 patients who underwent follow-up examinations of GV, 79 patients (52.3%) achieved eradication of GV, and 110 patients (72.8%) exhibited marked shrinkage of the treated GV to grade 0 or I. Meanwhile, new-appearance or aggravation of esophageal varices (EV) occurred in 54 out of 136 patients who underwent follow-up endoscopy (41.2%). During the 36.0+/-29.2 months (mean+/-SD) of follow-up, 39 patients rebled (hemorrhage from GV in 7, EV in 18, nonvariceal origin in 4, and unknown in 10 patients). The estimated 3-year rebleeding-free rate was 74.8%, and multivariate analysis showed that CP class C was associated with rebleeding (odds ratio, 2.404; 95% confidence-interval, 1.013-5.704; P=0.047). CONCLUSIONS: BRTO can be performed safely and effectively for the treatment of GV bleeding. However, aggravation of EV or bleeding from EV is not uncommon after BRTO; thus, periodic endoscopy to follow-up of EV with or without prophylactic treatment might be necessary in LC patients undergoing BRTO.
Adult ; Aged ; Asian Continental Ancestry Group ; *Balloon Occlusion/adverse effects ; Endoscopy, Gastrointestinal ; Esophageal and Gastric Varices/*complications ; Female ; Follow-Up Studies ; Gastrointestinal Hemorrhage/etiology/prevention & control/*therapy ; Humans ; Liver Cirrhosis/*complications ; Male ; Middle Aged ; Odds Ratio ; Pulmonary Embolism/etiology ; Recurrence ; Republic of Korea ; Retrospective Studies ; Severity of Illness Index ; Treatment Outcome

PURPOSE: To evaluate the incidence and clinical features of age-related macular degeneration (AMD) in Korea. METHODS: Web-based (www.armd-nova.or.kr) registration was conducted for AMD patients aged 50 or more who were newly diagnosed by retinal specialists in Korea from August 20, 2005 to August 20, 2006. Patient data including ophthalmologic examination, fundus photography, fluorescein angiogram and/or indocyanin green angiogram (ICG), past medical history, behavioral habit, combined systemic diseases were up-loaded. RESULTS: Among finally enrolled 1,141 newly diagnosed AMD patients, 690 patients (60.5%) were male and 451 patients (39.5%) were female. The average age of AMD patients was 69.7+/-8.0. Early AMD was observed in 190 patients and 951 patients had late AMD. Classic choroidal neovascular membrane (CNVM) was observed in 18.6% of exudative AMD patients and 63.4 % had occult CNVM. Subfoveal CNVM was observed in 80.4% of the patients with CNVM. Among the 580 exudative AMD eyes that performed indocyanin green angiography (ICG), 184 eyes (31.7%) had polypoidal choroidal vasculopathy (PCV) and 36 eyes (6.2%) showed retinal angiomatous proliferation (RAP). Age, male gender, smoking, diabetes and hypertension significantly increased the risk of the AMD among Koreans. CONCLUSIONS: Because of the low rate of participation by retinal specialists, definite incidence of AMD was not obtainable. However, the estimated 1-year AMD incidence in the Pusan area of Korea is at least 0.4%. In contrast to Western people, 31.7% of exudative AMD cases were revealed to be PCV and 6.2% were revealed to be RAP. This discrepancy between ethnic groups should be considered in the diagnosis and treatment modality selection of Korean AMD patients.
Aged ; Angiography ; Choroid ; Ethnic Groups ; Eye ; Female ; Fluorescein ; Humans ; Hypertension ; Incidence ; Korea ; Macular Degeneration ; Male ; Membranes ; Photography ; Retinaldehyde ; Smoke ; Smoking ; Specialization