The bone formation of periarticular connective tissue after head injury and total hip arthroplasty is included in the category of heterotopic ossification. Induction of a new bone formation in the soft tissue is related to various materials such as bone morphogenic protein. The alkaline phosphatase and acid phosphatase act as important factors in the formation and absorption of the bone. The acid phospatase has the important function of acting as the control with specific activity of phosphatase in vivo. Cholecalciferol induces absorption of the calcium in the alimentary tract and bone resorption and increment of bone calcification, whereas disodium etidronate inhibits the deposition and dissolution of calcium salt and formation of heterotopic bone. This paper reports on the relationship of alkaline phosphatase and various phosphoaminoacid phosphatase which affect the cellular differentiation and remodelling in the heterotopic ossification, with the effect of cholecalciferol and disodium etidronate on the heterotopic bone induction in rats. The following results were obtained: 1. The contents of the calcium in the implanted bone matrix increased markedly from two to five weeks. There was no changes in the calcium content by cholecalciferol or in the administration of small doses of disodium etidronate (5mg/kg). However, in the administration of large dose of disodium etidronate (25mg/kg), calcium mobilization was totally suppressed for the whole period of the experiment. 2. The protein content in the implanted bone matrix did not much change for the whole period of the experiment and the administratinn of cholecalciferol or disodium etidronate also had no effect on the protein content. 3. The activities of alkaline phosphatase in the implanted bone matrix peaked at two weeks in control or cholecalciferol group, whereas disodium etidronate admninstration caused the highest activity in the third week. 4. The activity of acid phosphatase in the implanted bone matrix increased in first and third weeks by cholecalciferol treatment. Disoidum etidronate inhibited the activity of the acid phosphatase in the first, fourth & sixth weeks of implantation. 5. The activity of phosphoserine phosphatase increased due to cholecalciferol treatment, but was significantly inhibited by disodium etidronate (25mg/kg) treatment. 6. The activity of phosphothreonine phosphatase in the implanted bone matrix slightly increased due to cholecalciferol treatment, whereas the activity decreased significantly for the whole period of the experiment by disodium etidronate (25mg/kg) treatment. 7. The activity of phosphotyrosine phosphatase in the implanted bone matrix was not change much for the whole period of the experiment and the administration of cholecalciferol or disodium etidronate had no effect on the activity of phosphotyrosine phosphatase. In conclusion, the disodium etidronate (25mg/kg) almost completely inhibited the molilization of calcium and the activities of acid phosphatase, phosphoserine and phosphothreonine phosphatases. Therefore, it can be suggested that the above phosphatases are closely related to the action mechanism of disodium etidronate.
Absorption ; Acid Phosphatase ; Alkaline Phosphatase ; Animals ; Arthroplasty, Replacement, Hip ; Bone Matrix ; Bone Resorption ; Calcium ; Cholecalciferol ; Connective Tissue ; Craniocerebral Trauma ; Etidronic Acid ; Ossification, Heterotopic ; Osteogenesis ; Phosphoric Monoester Hydrolases ; Phosphoserine ; Phosphothreonine ; Protein Tyrosine Phosphatases ; Rats

PURPOSE: The purpose of this study is to evaluate the gadolinium-enhanced MR imaging findings of cerebral venous angiomas, and to compare those findings with those of cerebral angiography. MATERIALS AND METHODS: We reviewed the findings of gadolinium-enhanced MR images of 11 cases with angiographically proved cerebral venous angiomas. We obtained Tl-and T2-weighted images with gadoliniumenhanced Tl-weighted images at a 0.5 T MR imager with a spin-echo technique. We analyzed the location and signal intensity of the lesion, pattern of contrast enhancement, the distribution of draining veins and medullary veins before and after contrast enhancement, and then compared with the findings of cerebral angiography. RESULTS: The characteristic central tubular signal void structure showed low signal intensity on Tl-weighted images and high signal intensity on T2-weighted images in all cases. After gadolinium enhancement, we could find a characteristic enhancement of all medullary and central veins in 7 cases. CONCLUSION: Gadolinium-enhanced MR image was useful in the diagnosis of venous angiomas especially in the detection of medullary veins. The invasive cerebral angiography could be replaced by this technique in this disease.
Central Nervous System Venous Angioma* ; Cerebral Angiography* ; Diagnosis ; Gadolinium ; Gadolinium DTPA* ; Hemangioma ; Magnetic Resonance Imaging ; Veins

While there have been not a few reports on the seroepidemiological characteristics of hepatitis B virus (HBV) infection in Korea, most of them, however, have had several limitations; operational definition of HBV infection, validity of detection methods of HBV serologic markers, size of the study population, and confirmation of the vaccination history against HBV, etc. In order to avoid such limitations, authors randomly selected 1,495 healthy adults among the 217,511 insured (target population) of Korean Medical Insurance Corporation, living in seoul, and tested HBV(HBsAg, anti-HBs and anti-HBc) of all the subjects were tested, 392(26.2%) of interview failure cases 742 nonvaccinee were excluded from the actual population. Finally, the serologic markers tested of 742 nonvaccinee (study population) only were analyzed for the seroepidemiologic observation of the natural infection of HBV. The seroepidemiological characteristics of HBV infection in Korea were as follows ; 1 Point prevalence of HBs antigenemia was 11.7(9.1-14.3)% in male, which was slightly higher than that of female, 9.5(3.7-15.3)%. This level was one of the highest among those of Asian-Pacific countries. Decreasing tendency of HBsAg prevalence after the age of 50 was observed, which seems to be due to selective attrition of HBV chronic carriers among the healthy adults and/or to the limited-lasting duration of the HBs antigenemia, in part. 2. Point prevalence of anti-HBc(78.8% in male, 50.9% in female) was higher than that of anti-HBs(65.2% in male, 46.6% in female), respectively. And both of them were higher in male than in female. Increasing tendency of the prevalence of both antibodies was observed by age, which seems to be largely due to recurrent infection in adults and to some cumulative effect, in part, of their relatively longer-lasting duration. 3. The level of HBV infection defined by positive for at least one of the 3 serologic markers of HBV by RIA method was 84.7(81.8-87.6)% in male and 61.2(51.9-70.5)% in female, which was also one of the highest among those of Asian-Pacific countries. The proportion of susceptible population to HBV infection among healthy adults was 15.3% in male and 38.8% in female. 4. The relative frequency of current or past infection and chronic carrier among HBV infected person was estimated. The currently or past infected was estimated 75.7% in male and 71.8% in female, and chronic carrier state, 13.8% in male and 14.1% in female. The analysis of the geometric mean of the antibody titer in anti-HBs positive sera indicated also to be compatible with the above findings, suggesting that active, even though inapparent, infection of HBV occur so frequently among healthy adults in Korea.
Adult* ; Antibodies ; Carrier State ; Female ; Hepatitis B Surface Antigens ; Hepatitis B virus* ; Hepatitis B* ; Hepatitis* ; Humans ; Insurance ; Korea ; Male ; Prevalence ; Radioimmunoassay ; Seoul* ; Vaccination

No abstract available.
Coxa Vara* ; Follow-Up Studies*

BACKGROUND: During the adolescent growths spurt, iron deficiency becomes more common, particularly with the additional factors of menstrual blood loss in females and the androgen-related rise in hemoglobin concentration in males. This study was conducted to investigate the iron status in the adolescent students. METHODS: Venous peripheral blood was sampled from 178 males(79 of 12-13years, 99 of 15-16years) who were 1st grade students of two boy's middle schools and two high schools and from 186 females(87 of 12-13years, 99 of 15-16years) who were 1st grade students of two girl's middle schools and two high schools. Laboratory procedures included a hemoglobin, hematocrit, serum iron, TIBC and serum ferritin. Transferrln saturation was calculated. RESULTS: 1) Mean values were hemoglobin 13.7+/-0.78 g/dl, hematocrit 40.6+/-2.47%, serum iron 127.6+/-43.02 ug/dl, TIBC 387.9+/-47.73 ug/dl, transferrin saturation 33.3+/-11.38%, and serum ferritin 26.1+/-16.90 ng/ml in 12-13years old males. 2) Mean values were hemoglobin 13.7+/-0.85 g/dl, hematocrit 40.9+/-3.79%, serum iron 99.4+/-34.93 ug/dl, TIBC 387.8+/-45.53 ug/dl, transferrin saturation 26.2+/-9.99%, and serum ferritin in 22.7+/-14.18 ng/ml in 12-13years old females. 3) Mean values were hemoglobin 15.2+/-0.84 g/dl, hematocrit 45.9+/-2.77%, serum iron 144.9+/-51.97 ug/dl, TIBC 419.8+/-52.46 ug/dl, transferrin saturation 34.2+/-10.44%, and serum ferritin 31.2+/-20.91 ng/dl in 15-16years old males. 4) Mean values were hemoglobin 13.2+/-0.89 g/dl, hematocrit 39.9+/-2.78%, serum iron 111.1+/-39.78 ug/dl, TIBC 392.8+/-50.06 ug/dl, transferrin saturation 28.9+/-10.85%, and serum ferritin 21.4+/-17.11 ng/ml in 15-16years old females. 5) The prevalence of iron deficiency was 8.9% and 10.1% in 12-13years and 15-16years old males respectively. In 12-13years and 15-16years old females, the prevalence was 16.1% and 29.3% respectively. The prevalence of iron deficincy anemia was 1.1% and 2.0% in 12-13years and 15-16years old female and absent in male. CONCLUSIONS: Although hemoglobin is normal, we recommend to check other parameters to optimize the identification of individuals with iron deficiency.
Adolescent* ; Anemia ; Female ; Ferritins ; Hematocrit ; Humans ; Iron* ; Male ; Prevalence ; Seoul* ; Transferrin

The incidence of thyroid cancer is steadily increasing in many countries including Korea. Especially in Korea, the incidence of thyroid cancer is very rapidly increasing during several decades; from 2005 Annual Report of the Korea Center Cancer Registry, thyroid cancer ranked the fifth among all cancers (incidence rate was 8.9%). Moreover the incidence of thyroid cancer was 16.7% in female and now thyroid cancer was reported the most common cancer in Korean female. Among several thyroid cancers, papillary thyroid cancer (PTC) is rapidly increasing due to the increased detection of papillary thyroid microcarcinoma (PMC). Until now, PMC showed little significant differences among clinical characteristics or prognosis compared with PTC, thus the optimal treatment strategy of PMC remains controversial. Therefore, to establish the optimal treatment and follow up program about thyroid cancer, we should investigate clinical characteristics, prognosis and predictive factors of PMC more closely.
Carcinoma, Papillary ; Factor IX ; Female ; Humans ; Incidence ; Korea ; Prognosis ; Thyroid Gland ; Thyroid Neoplasms

We evaluate the effects of a calcium antagonist(nifedipine) and a xanthine oxidase inhibitor (allopurinol), drugs having a protective effect against shock wave induced renal dysfunction, on acute changes of renal function after piezoelectric ESWL. A total of 40 patients with renal stones undergoing piezoelectric ESWL with LT02 lithotriptor was randomly assigned to 4 groups. Group 1 received no medication and the others received nifedipine(group 2), allopurinol(group 3), and nifedipine plus allopurinol(group 4), respectively. NAG, LDH, 7-GTP, D2M, and microalbumin were measured in the 24-hour urine before and after ESWL. Baseline levels of these parameters were not statistically different between the control group and the others. After ESWL, NAG and microalbumin were significantly increased in group l(p<0.01). In groups 2 and 4, all of the parameters after ESWL were not significantly different from the Values before ESWL. Although the level of NAG after ESWL was significantly higher(p<0.01) than that of the pre-ESWL in group 3, the change of NAG was milder in group 3 comparing to group 1. The range of increase of NAG in groups 2 and 4 were significantly low(<0.01) compared to group 1, and the range of increase of microalbumin in groups 2, 3, 4 were significantly low compared to group l(group 2, 4; p<0.01, group 3; p<0.05). Our results indicate that nifedipine and/or allopurinol can prevent or decrease acute changes of renal function after ESWL using LT02 piezoelectric lithotriptor and especially nifedipine seems to be more efficient than allopurinol.
Allopurinol* ; Calcium ; Humans ; Lithotripsy* ; Nifedipine* ; Shock* ; Urinary Calculi ; Xanthine Oxidase

We evaluate the effects of a calcium antagonist(nifedipine) and a xanthine oxidase inhibitor (allopurinol), drugs having a protective effect against shock wave induced renal dysfunction, on acute changes of renal function after piezoelectric ESWL. A total of 40 patients with renal stones undergoing piezoelectric ESWL with LT02 lithotriptor was randomly assigned to 4 groups. Group 1 received no medication and the others received nifedipine(group 2), allopurinol(group 3), and nifedipine plus allopurinol(group 4), respectively. NAG, LDH, 7-GTP, D2M, and microalbumin were measured in the 24-hour urine before and after ESWL. Baseline levels of these parameters were not statistically different between the control group and the others. After ESWL, NAG and microalbumin were significantly increased in group l(p<0.01). In groups 2 and 4, all of the parameters after ESWL were not significantly different from the Values before ESWL. Although the level of NAG after ESWL was significantly higher(p<0.01) than that of the pre-ESWL in group 3, the change of NAG was milder in group 3 comparing to group 1. The range of increase of NAG in groups 2 and 4 were significantly low(<0.01) compared to group 1, and the range of increase of microalbumin in groups 2, 3, 4 were significantly low compared to group l(group 2, 4; p<0.01, group 3; p<0.05). Our results indicate that nifedipine and/or allopurinol can prevent or decrease acute changes of renal function after ESWL using LT02 piezoelectric lithotriptor and especially nifedipine seems to be more efficient than allopurinol.
Allopurinol* ; Calcium ; Humans ; Lithotripsy* ; Nifedipine* ; Shock* ; Urinary Calculi ; Xanthine Oxidase

A case of primary gastric carcinoma with patterns resembling those of hepatocellular carcinoma(HCC) is reproted. This patient who represented high serum alpha-fetoprotein(AFP) underwent a subtotal gastrectomy for stomach cancer and lobectomy of liver metastasis. The hepatoid component of the tumor was characterized by solid nests of large polygonal cells arranged in cords and trabeculae, with central nuclei, prominent nucleoli, and abundant eosinophilic cytoplasm; single-nuclear giant cells were frequently noted. These tumor cells of stomach stained positive immunohistochemically for AFP, ACT(alpha-1-antitrypsin), AACT(alpha-1-antichy-motrypsin). Thus, this hepatoid gastric adenocarcinoma tumor cells demonstrated both morphologic and immunohistochemical features of partial differentiation to the HCC. Careful histologic examination in conjunction with the immunohistochemical demonstration of AFP can provide a useful contribution to the diagnosis of this rare histological type of gastric carcinoma And the presence of metastatic hepatoid adenocarcinoma from the stomach should be considered in a patient with hepatic tumor mimicking HCC. Because of frequent venous and lymphatic invasion, as well as liver metastasis, prognosis appears to be poor. The authors reviewed 45 cases of hepatoid adenocarcinoma of stomach reported in the literature, also.
Adenocarcinoma ; Carcinoma, Hepatocellular ; Neoplasm Metastasis ; Stomach Neoplasms

No abstract available.
Heat-Shock Proteins* ; Hot Temperature*