No abstract available.
Emergencies* ; Emergency Service, Hospital* ; Humans ; Statistics as Topic*

No abstract available.
Communicable Diseases* ; Zinc*

The choroid plexus papilloma is a rare tumor. Its incidence is 0.4-0.6% of all intracranial tumors. Most cases of this tumor are found in the young subject, especially infant and childhood but its congenital form is very rare. The clinical and pathologic findings of congenital choroid plexus papilloma are similar to that of any age. But the cilia on the cell surface are common in the former and very rare in the latter. We present a case of congenital choroid plexus papilloma of the lateral ventricle in a 2 month-old male baby. He had suffered from a sudden onset of convulsions and a drowsy mental state for 2 days. The CT scan revealed a large intraventricular tumor in the left lateral ventricle with hydrocephalus. After ventriculo-peritoneal shunt(V-P shunt), his symptoms were improved. But the hydrocephalus was aggravated due to malfunction of V-P shunt, and he recieved the operation after 4 months. The gross examination revealed a large ovoid papillary tumor(4x3x3cm). On light microscopic examination, the tumor showed papillary structure lined by columnar eosinophilic cells. Some cells had cilia. The electron microscopic finding showed intercellular junction, microvilli and cilia. The tumor cells were positive for cytokeratin, vimentin and S-100 protein.
Infant ; Child ; Male ; Female ; Humans ; Incidence

No abstract available.
Drug Therapy* ; Liver* ; Plasma*

Ovarian carcinoma is a serious disease in women. Some reports revealed all-trans-retinoic acid (tRA) inhibited the proliferation of ovarian carcinoma cell lines and induced apoptosis. The aim of this study was to evaluate the anticancer and apoptotic effects of tRA and the expression of the retinoic acid receptor (RAR) alpha, beta, gamma, p53, bcl-2, and c-myc genes on the ovarian carcinoma cell lines, NIH OVCAR3 and SKOV3. In both cell lines, the proliferation of tumor cells was inhibited and characteristic morphologic patterns of apoptosis were shown after treatment of tRA. The number of apoptotic cells and the percentage of apoptosis were increased after treatment of tRA. The gel electrophoresis revealed the DNA ladder pattern in the NIH OVCAR3. Gene expressions were observed using northern blotting. There was no RARalpha expression in both cell lines. In NIH OVCAR3, there was no changes in the expression of RARbeta and bcl-2 gene. The RARgamma gene expression of tRA treated group was slightly increased, but p53 gene expression was decreased, and c-myc gene was not expressed. In SKOV3, the expressions of RARbeta, gamma, and p53 genes were increased and that of bcl-2 was decreased in the tRA treated group. There was no change in c-myc gene expression. These results suggest tRA has anticancer and apoptotic effect on both ovarian carcinoma cell lines. RARbeta, RARgamma, bcl-2, and p53 gene expressions were correlated with these effects of tRA on SKOV3 but not on NIH OVCAR3.
Apoptosis* ; Blotting, Northern ; Cell Line* ; DNA ; Electrophoresis ; Female ; Gene Expression ; Genes, bcl-2 ; Genes, myc ; Genes, p53 ; Humans* ; Receptors, Retinoic Acid ; Tretinoin*

PURPOSE: Norepinephrine has modulatory effects on neuronal excitability and, in some cases, has a proconvulsant effect. Intraperitoneal imipramine treatment increases norepinephrine level, and to a lesser extent, dopamine and serotonin in brain dialysate from rats. We sought to determine the effects of imipramine on pilocarpine-induced seizures in the immature rats. METHODS: Right and left cortical and hippocampal electrodes were placed in 10~15 day old Sprague-Dawley rats. The following day 3-hour video EEG recordings were obtained to monitor electrographic seizures and status epilepticus induced by intraperitoneal injection of high dose(200mg/kg : HD) and low dose (75mg/kg : LD) pilocarpine. A first group of rats received HD pilocarpine alone(n=25), or pretreatment with 0.5(n=6). 1(n=6), 2(n=6), 5(n=6), or 10(n=11)mg/kg of imipramine. A second group of rats received LD pilocarpine alone(n=6) or pretreatment with 2mg/kg of imipramine (n=6). Data were analyzed using the Fisher exact test. RESULTS: Treatment with HD pilocarpine alone resulted in electrographic seizures in 76%(n=19) and status epilepticus in 44%(n=11). In the HD pilocarpine group, status epilepticus was seen in 100% of rats pretreated 1, 2, and 5mg/kg imipramine. 90.9% of the rats pretreated with 10mg/kg of imipramine developed seizures and 36.4% developed status epilepticus. Imipramine at 0.5, 1,2, and 5mg/kg increased the incidence of seizures and status epilepticus in the HD pilocarpine group, but the incidence was statistically significant only for status epilepticus(p<0.05). The latency for the occurrence of first status epilepticus was 12.3+/-1.3 min in the HD pilocarpine alone group, and it was 21+/-3.8 min and 25.3+/-5.7 min in the group pretreated with 5 and 10mg/kg imipramine, respectively(p<0.02). Treatment with LD pilocarpine alone resulted in seizures in 50% and status epilepticus in 16.7%. In the LD pilocarpine group with imipramine 2mg/kg pretreatment, 83.3% had seizures and status epilepticus. Imipramine at 2mg/kg increased the incidence of seizures and status epilepticus in the LD pilocarpine group, but the increase was statistically significant only for status epilepticus(p<0.05). CONCLUSION: Imipramine exhibits a proconvulsant effect at low doses and an anticonvulsant effect at high doses in the pilocarpine seizure model in immature rats. There may be a dose-dependent effect on monoaminergic receptors which results in increased neuronal excitability.
Animals ; Brain ; Dopamine ; Electrodes ; Electroencephalography ; Imipramine* ; Incidence ; Injections, Intraperitoneal ; Neurons ; Norepinephrine ; Pilocarpine ; Rats* ; Rats, Sprague-Dawley ; Seizures* ; Serotonin ; Status Epilepticus

Under the extreme change of the environment, animals react physiologically to adapt to the stress and secrete catecholamines. Cold exposure is a kind of the environmental stress. Author tried to determine the amount of catecholamines in rat urine as a parameter of physiological response to cold stress. Urinary catecholamine was measured by using HPLC with fluorescence detector, coation exchange column prepacked with Bio-Rex 70 and ammonium pentaborate as catecholamine eluent. The amount of dopamine in normal state rat urine was 42.0 ng, but under the low temperature of 5 degrees C, the dopamine amount was increased to 221.25 ng/5 ml. Above findings are suggesting that catecholamine secretion, especially dopamine, increase in the stressful condition such as cold exposure.
Ammonium Compounds ; Animals ; Catecholamines ; Chromatography, High Pressure Liquid ; Dopamine ; Fluorescence ; Rats*

The origin of the stromal cell of cerebellar hemangioblastoma has long been studied electron microscopically and immunohistochemically. The results and theories about the stromal cell origin are variable and plentiful. However, the exact origin of the stromal cell remains controversial. The present study is aimed to elucidate the nature of the stromal cell of cerebellar hemangioblastoma. Ten cases of hemangioblastoma in Severance Hospital were used for immunohistochemical analysis of the stromal cell. The immunohistochemical staining of GFAP, S-100 protein, NSE, alpha-l-antichymottypsin, cytokeratin, CD 68, factor VIII related antigen, and synaptophysin were performed. The results were as follows; GFAP and S-100 protein were stained mainly but weakly in bellar capillary spindle cell and cellular process. NSE was stained mainly in foam cells, and 6 cases among them revealed strong reaction. ct-l-antichymotrypsin was stained in a few foam cells of 5 cases. Cytokeratin, CD 68, factor VIII related antigen, and synaptophysin showed negative reaction. Based on these results, it is considered that the origin of the stromal cell is histiocytic or neurogenic rather than glial. The weak positivity of GFAP and S-100 protein may support the neurogeriic origin but ct-l-antichymotrypsin positivity does not support the possibility. The positivity of GAP and S-100 protein supports the phagocytic action of histiocytic cell and suggests histiocytic origin rather than neurogenic.

The present study was undertaken to investigate the effect of ethanol administration on the resistance of mice to Cryptococcus neoformans, IL-2 production of murine splenocytes, active systemic anaphylaxis induced by ovalbumin (OVA), serum TNF-alpha production, nitric oxide (NO) production by peritoneal machrophages and B16F10 melanoma colonization in lungs in mice. It was found that ethanol administration significantly inhibited the resistance of mice to C. neoformans infection, IL-2 production, active systemic anaphylaxis induction, serum TNF- alpha production and NO production. Ethanol administration significantly enhanced lung colonization when it was administered before i.v. melanoma inoculation. These results demonstrate that ethanol may play a critical role in tumorigenesis and immunoregulation as an immunomodulator.
Anaphylaxis* ; Animals ; Carcinogenesis ; Colon ; Cryptococcus neoformans ; Cytokines* ; Ethanol ; Interleukin-2 ; Lung ; Melanoma* ; Mice ; Nitric Oxide* ; Ovalbumin ; Tumor Necrosis Factor-alpha

We report a case of a 41-year-old female patient who suffered from the acute abdominal pain for several hours after eating raw sea-fishes. After the fibergastroscopy and the abdominal C-T scan, the clinicians found a gastric submucosal mass and performed the explolaparotomy to get an wedge of stomach. Sections revealed a larva surrounded by phlegmonous inflammation with intense eosinophilic infiltration in the widened gastic submucosa. The larva presented the characteristics of the Anisakis: two lateral chords with renette cell, thich smooth cuticle and well developed musculature.
Female ; Humans