The p53 gene, one of the tumor suppressor genes, is believed to play an important role through mutation and overexpression in the progression of various human malignant tumors. To compare the p53 mutation status between the primary and metastatic lesions of breast cancers and to investigate the mutational pattern of p53, immunohistochemistry (IHC) and polymerase chain reaction and single strand conformational polymorphism (PCR-SSCP) were performed in 25 cases of breast cancers with paraffin embedded tissue. Mutant protein products or point mutation were detected through IHC or PCR-SSCP method. And flow cytometrical (FCM) analysis were performed in the same paraffin blocks to correlate the DNA ploidy and p53 mutation. The following results are summarized. 1. The detection of the p53 gene mutation and overexpression of the p53 protein were measured in 40% and 48%, respectively, in 25 primary tumors, either or both methods was detected in 64%. 2. A concordance rate of the p53 protein expression between the primary and metastatic lesions of 25 breast cancers was 100%, but the concordance rate of the p53 gene mutation was 72%. 3. The correlation between the p53 mutation and the DNA aneuploidy was not statistically significant (p=0.38) 4. A p53 mutation by IHC or PCR-SSCP was more frequently detected in grade III breast cancers than in grade I or II. 5. Among 5 to 9 exons of the p53 gene, exon 7 was the most frequent mutation spot in this study. 6. Additional mutation of the p53 gene was developed in the three metastatic lesions. With the above results it is suggested that the p53 protein overexpression by immunohistochemistry is not correlated with the p53 mutation by PCR-SSCP. The p53 mutation pattern between the primary and metastatic lesions are not idenitical and an additional point mutation can occur in the metastatic lesion. The DNA aneuploidy is more frequently detected in the cases with the p53 protein overexpression than in the p53 protein negative, but it is not statistically significant.
Aneuploidy ; Breast Neoplasms* ; Breast* ; DNA* ; Exons ; Genes, p53 ; Genes, Tumor Suppressor ; Humans* ; Immunohistochemistry ; Mutant Proteins ; Paraffin ; Ploidies* ; Point Mutation ; Polymerase Chain Reaction

The p53 gene, one of the tumor suppressor genes, is believed to play an important role through mutation and overexpression in the progression of various human malignant tumors. To compare the p53 mutation status between the primary and metastatic lesions of breast cancers and to investigate the mutational pattern of p53, immunohistochemistry (IHC) and polymerase chain reaction and single strand conformational polymorphism (PCR-SSCP) were performed in 25 cases of breast cancers with paraffin embedded tissue. Mutant protein products or point mutation were detected through IHC or PCR-SSCP method. And flow cytometrical (FCM) analysis were performed in the same paraffin blocks to correlate the DNA ploidy and p53 mutation. The following results are summarized. 1. The detection of the p53 gene mutation and overexpression of the p53 protein were measured in 40% and 48%, respectively, in 25 primary tumors, either or both methods was detected in 64%. 2. A concordance rate of the p53 protein expression between the primary and metastatic lesions of 25 breast cancers was 100%, but the concordance rate of the p53 gene mutation was 72%. 3. The correlation between the p53 mutation and the DNA aneuploidy was not statistically significant (p=0.38) 4. A p53 mutation by IHC or PCR-SSCP was more frequently detected in grade III breast cancers than in grade I or II. 5. Among 5 to 9 exons of the p53 gene, exon 7 was the most frequent mutation spot in this study. 6. Additional mutation of the p53 gene was developed in the three metastatic lesions. With the above results it is suggested that the p53 protein overexpression by immunohistochemistry is not correlated with the p53 mutation by PCR-SSCP. The p53 mutation pattern between the primary and metastatic lesions are not idenitical and an additional point mutation can occur in the metastatic lesion. The DNA aneuploidy is more frequently detected in the cases with the p53 protein overexpression than in the p53 protein negative, but it is not statistically significant.
Aneuploidy ; Breast Neoplasms* ; Breast* ; DNA* ; Exons ; Genes, p53 ; Genes, Tumor Suppressor ; Humans* ; Immunohistochemistry ; Mutant Proteins ; Paraffin ; Ploidies* ; Point Mutation ; Polymerase Chain Reaction

The bone mineral densities of 60 middle school boys were measured with dual photon absorptiometry to define the influence of Taekwon-Do. They were divided into Taekwon-Do and control group, each comprising 30 boys. The bone mineral densities of the head, trunk, pelvis, both upper and lower extremities, and body total were measured. The results were as follows. 1. The BMD of head was 1.668 ± 0.153 in Taekwon-Do and 1.554 ± 0.153 0.167 in control. It was significantly increased in aekwon-Do(p <0.05). 2. The BMD of trunk was 0.378 ± 0.153 0.044 in Taekwon-Do and 0.353 ± 0.153 0.053 in control. There was no significant difference(p >0.05). 3. The BMD of pelvis was 1.648 ± 0.153 0.112 in Taekwon-Do and 1.444 ± 0.153 0.215 in control. It was significantly increased in Taekwon-Do(p <0.005). 4. The BMD of right and left legs were 1.597 ± 0.153 0.118 and 1.579 ± 0.153 0.125 in Taekwon-Do and 1.425 ± 0.153 0.115 and 1.421 ± 0.153 0.113 in control group respectively. They were significantly increased in Taekwon-Do(p <0.005). 5. The BMD of right and left arms were 1.184 ± 0.153 0.090 and 1.178 ± 0.153 0.115 in Taekwon-Do and 1.056 ± 0.153 0.095 and 1.066 ± 0.153 0.097 in control group respectively. They were significantly increased in Taekwon-Do(p.<0.005). 6. The total body BMD was 0.932 ± 0.153 0.068 in Taekwon-Do and 0.846 ± 0.065 in control. It is significantly increased in Taekwon-Do(p<0.005). In conclusion, Taekwon-Do increases the total bone mineral density and the mineral densities of the head, pelvis and extremities but not that of trunk. It is thought that continued practice of Taekwon-Do throughout adult life might prevent the senile osteoporosis
Absorptiometry, Photon ; Adult ; Arm ; Bone Density ; Extremities ; Head ; Humans ; Leg ; Lower Extremity ; Miners ; Osteoporosis ; Pelvis

The appendiceal mucocele is very rare disease of 0.2% incidence. About 24% of patients are asymptomatic and symptomatic patients present with pain in the right lower quadrant of abdomen in 64%, plapable maas in the right lower quadrant of abdomen in 50%, and rarely, melena, hematochezia, anemia, diarrhea, malaise, and abdominal distension. The gastrointestinal bleeding may be presented in the patient with intussusception, but the massive bleeding is generally absent. We report a case of appendiceal mucocele accompanying with gastrointestinal bleeding and review of literature.
Abdomen ; Anemia ; Diarrhea ; Gastrointestinal Hemorrhage ; Hemorrhage* ; Humans ; Incidence ; Intussusception ; Melena ; Mucocele* ; Rare Diseases

Primary gastrointestinal lymphoma primarily confined to gastrointestinal tract is relatively rare diaease. Although the lymphoma primarily involved colorectum or small bowel was commonly reported than primary gastric lymphoma in Korea, the concurrent primary lymphoma of colon and small bowel is very rare in reported cases. We report a case of combined primary malignant lymphoma of the jejunum and cecum, who was admitted due to melena and anemia. She had right hemicolectomy and end-to-side ileotransverse colostomy at 2 months ago, due to primary colon lymphoma. The laparotomy was performed and identified hard, 2 x 3 cm sized masses on distal 25 cm, 80 cm and 150 cm from the Treitz ligament. The histology of these small ma showed histiocytic lymphoma as same as cecal specimen. In general, the small bowel lymphoma shaws poor prognosis than gastric or colorectal lymphoma due to diffieulty in diagnosis and late symptoms, but this problem could be resolved through the knowledge about primary gastrointestinal lymphoma and the development of diagnostic methods.
Anemia ; Cecum ; Colon* ; Colostomy ; Diagnosis ; Gastrointestinal Tract ; Jejunum ; Korea ; Laparotomy ; Ligaments ; Lymphoma* ; Lymphoma, Large B-Cell, Diffuse ; Melena ; Prognosis

No abstract available.
Child* ; Humans

No abstract available.
Leptospira interrogans* ; Leptospira*

Either increased cellular proliferation or decreased death might result in an expansion of their numbers in the oncogenic process. Cellular apoptosis represents an autonomous suicide pathway that helps to restrict the cell number. However bcl-2 and mutant p53 inhibit programmed cell death. To determine whether the bcl-2 gene is activated during colorectal tumorigenesis and whether it has any relationship with p53 and apoptosis, we studied the expression of bcl-2 and p53 in the normal colonic mucosa, in the adenomatous polyps and in the adenocarcinomas using the immunohistochemical method. Also we evaluated the status of apoptosis using the in situ end labeling method. The bcl-2 immunoreactivity was restricted to the basal epithelial cells of all normal colonic mucosa and they were expressed in all adenomas and 86% of adenocarcinomas, especially in the superficial lesion of some tumors. Mutations of p53 were not found in the normal colonic mucosa, but they were present in dysplastic cells of adenomas (52%) and in cancer cells of the adenocarcinomas (47%). Apoptosis was confined to the tips of the normal colonic mucosa. It was more easily detected in the p53-positive adenomas than in the p53-negative adenomas (p=0.010). In the adenocarcinomas, the findings of apoptotic process are not related with p53 mutation (p=0.3) and bcl-2 expression (p=0.187). p53 and bcl-2 are probably one step of several apoptotic processes in the adenocarcinomas.
Adenocarcinoma* ; Adenoma* ; Adenomatous Polyps ; Apoptosis* ; Carcinogenesis ; Cell Count ; Cell Death ; Cell Proliferation ; Colon ; Epithelial Cells ; Genes, bcl-2 ; Mucous Membrane ; Suicide

Idiopathic thrombocytupenic purpura is known as an autommune t,hrombocytopenic purpura. It is characterized by either an acute or gradual onset of petechiae or ecchymoses in the skin and mucous membranes, especially in the mouth. Epistaxis, conjunct.ival hemorrhage, hemorrhagic bullae in the mouth, gingival bleeding, melena, and hematemesis may occur. We report a case of idiopathic thrombocytopenic purpura in a 10-year-old male, who showed multiple petechiie and ecchymoses on both lower extremities, and hemorchagic bullae in the mouth. Periheral blood smear showed decreased platlet count, and in the bone marrow megakeyocytes were incraesed. Bleeding time was increased, but coagulation time was normal.
Bleeding Time ; Bone Marrow ; Child ; Ecchymosis ; Epistaxis ; Hematemesis ; Hemorrhage ; Humans ; Lower Extremity ; Male ; Melena ; Mouth ; Mucous Membrane ; Purpura ; Purpura, Thrombocytopenic, Idiopathic* ; Skin

Proper positioning of pulmonary artery catheter and predicting distal migration of it during cardiopulmonary bypass is important for the prevention of perioperative complication of pulmonary artery rupture. The authors therefore examined the insertion length of pulmonary artery catheter via right internal jugular vein at which catheter tip was advanced to the most proximal position where pulmonary capillary wedge pressure could be obtained. And also the distal migration is measured by comparing the difference between prebypass and postbypass corrected length. Just before bypass, pulmonary artery catheter was arbitrarily receded 5cm for the prevention of spontaneous distal migration and wedging. The subjects were 47 patients who underwent open heart surgery (valve replacement, coronary artery bypass graft) during the period of November, 1992 through April, 1993. The results were as follows. 1) The insertion length of pulmonary artery catheter from skin to the right ventricle inlet, pulmonary artery inlet and pulmonary capillary wedge position were 26.5+/-3.0 cm, 36.8+/-4.9 cm and 46.1+/-5.7 cm respectively. 2) There were no significant statistical correlations between insertion lengths and patient constitutions such as body weight and height(r=0.144, r=0.032). 3) Locations of catheter tips were distributed to the 0.9+/-3.1 cm left to the spinous process, 1.9+/-1.6 cm inferior to the carina ; mostly LLQ of the lung field(51%). 4) During cardiopulmonary bypass, pulmonary artery catheter tips were migrated distally in 93.6% of the cases and the migration lengths were 2.7+/-2.0 cm. 5) There were no major perioperative complications caused by pulmonary artery catheterization. These results suggest that 5 cm withdrawal of pulmonary axtery catheter just before cardiopulmonary bypass can prevent the fatal complication of pulmonary artery rupture owing to its spontaneous distal migration.
Bays ; Body Weight ; Capillaries ; Cardiopulmonary Bypass ; Catheterization, Swan-Ganz ; Catheters* ; Constitution and Bylaws ; Coronary Artery Bypass ; Extracorporeal Circulation* ; Heart Ventricles ; Humans ; Jugular Veins ; Lung ; Pulmonary Artery* ; Pulmonary Wedge Pressure ; Rupture ; Skin ; Thoracic Surgery