The effects of treatment with mercury chloride on the nitrite and nitrate syntheses were observed in peritoneal macrophages from Balb/c mice and EMT-6 cells in vitro. The cells were cultured in Dulbecco's modified Eagle's medium(DMEM) with cytokines. Amounts of nitrite and nitrate in the culture media after 24 and 36 hours of culture were about 2-fold, and 3-fold of those measured after 12 hours respectively. There were very close associations between the amounts of nitrite and nitrate measured in the culture media according to culture time. The survival rate of peritoneal macrophages was significantly decreased by mercury chloride added into the media in dose-dependent manner, however the survivals of EMT-6 cells were not influenced by mercury chloride concentration in media. Nitrite and nitrate syntheses were dose-dependently decreased by mercury chloride added in culture media. ATP synthesis also decreased in EMT-6 cells by mercury chloride. These results reported here suggest that the disorder of cell mediated immunity by mercurials could be related to the inhibition of nitric oxide synthesis which seems to be caused by the inhibition of ATP synthesis.
Adenosine Triphosphate ; Animals ; Culture Media ; Cytokines ; Immunity, Cellular ; Macrophages ; Macrophages, Peritoneal* ; Mice* ; Nitric Oxide* ; Survival Rate

Albinism is an inherited ongenital disarder in which there is sgr neralized decrease or absence of pigrnent in the eyes, skin, and hair. There are two general groups (1) Oculocutneou albinism, (2) Ocular albinism. Skin cancers in albinos are rare in ternperate clirnats and t.hey occur rnostly on sun ex posed areas. We present a case of recurrance of squarnous cell carcinoma ir a Korean albinoid on both sides of the neck and right ear. On liistopathologic examination, we find I or pearls, and irregular mases of epidermal cells that proliferite downward into the devmis. The invaing cell masses are composed of atypical squamous cells.
Albinism ; Albinism, Ocular ; Carcinoma, Squamous Cell* ; Ear ; Hair ; Neck ; Skin ; Skin Neoplasms ; Solar System

No abstract available.
Gonadal Dysgenesis, 46,XY*

An aneurysm arising from the intracranial portion of the internal carotid artery(ICA) is usually found at the junction of the ophthalmic, superior hypophyseal, posterior communicating or anterior choroidal artery, or at the bifurcation of the internal carotid, but very rarely at the junction of the persistent trigeminal artery. We present a case of a 49-year-old man who presented with a massive subarachnoid hemorrhage, with large intracerebral hematoma due to rupture of the aneurysm originating from the distal portion of the internal carotid artery. During surgery, we found that the aneurysm was originated at the junction of the internal carotid artery and the artery arising from the distal to anterior choroidal artery. We considered this artery to be an anatomical variant of the uncal artery(UA) arising from the internal carotid artery.
Aneurysm* ; Arteries* ; Carotid Artery, Internal* ; Choroid ; Hematoma ; Humans ; Middle Aged ; Rupture ; Subarachnoid Hemorrhage

Multiple cerebral arteriovenous malformations(AVMs) are thought to be rare lesions. The authors present a case of multiple AVMs in te left cerebral hemisphere. A 26-year-old male patient came to the hospital for evaluation of recurrent attacks of generalizd seizures. Cerebral angiography demonstrated two separated AVMs having different feeders and drain veins in the left cerebral hemisphere. Using staged operations we excised the lesions completely. The criteria and surgical tactics of multiple AVMs are discussed with a review of the literature.
Adult ; Cerebral Angiography ; Cerebrum ; Humans ; Intracranial Arteriovenous Malformations* ; Male ; Seizures ; Veins

The authors report two cases of multiple aneurysms on the anterior communication artery among 141 consecutive cases of cerebral aneurysms treated surgically during last 3 years, and review the literatures.
Aneurysm* ; Arteries* ; Intracranial Aneurysm

A 70-year-old female Patient was admitted due to the impression of lung abscess via local clinic. Chest P-A showed air shadow containing huge mass lesion in the right lower lung field, pericardio phrenic angle. But the patient complained of only mild upper respiratioy tract infection symptoms and the laboratory tests were within normal limits. Barium enema and chest C-T taken right after barium enema were performad in suggesting of the diaphragmatic hernia. Barium tilled transverse colon and associated omentum were in the right anterior hemithorax surrounded by the hernial sac. The mass lesion shown in the chest P-A was compatible with the diaphragmatic hemia, Morgagni type. Operative reduction of the herniated bowel and simple closure of the diaphragm was performed.
Aged ; Barium ; Colon, Transverse ; Diaphragm ; Enema ; Female ; Hernia, Diaphragmatic ; Humans ; Lung ; Lung Abscess ; Omentum ; Thorax*

BACKGROUND: Ethical issues in medical practice focuses mainly on critically ill hospitalized pateints or sophiscated technologic developments. However, in the outpatient setting physicians enco unter many problems that require ethical decision making. This study is an assessment of awareness and understanding of ethical issues commonly encountered in ambulatory setting in order to develop education curriculum. METHODS: A questionnaire was designed to evaluate general knowledge of medical ethics using 12 clinical vignettes. The questionnaire was distributed to medical students and residents who were asked to answer whether an ethical issue was present, its significance, and what the specific issues was involved. RESULTS: The response rate was 53%, with 106 of 200 students or residents completing the questionnaire-63 medical students, 14 interns and 25 residents. Respondents' ability to identify that an ethical issue was involved in each vignette ranged from 42.9% to 78.3%. The significance rating ranged from 2.9 to 4.1 on the Likert scale of 1 to 5. A majority of respondents did not identify the correct ethical issue invloved in each vignette. CONCLUSION: This survey showed that the medical students and residents seem to have insufficient knowledge to recognize ethical dilemmas in ambulatory setting. Appropriate medical ethics education should be developed in medical education with particular emphasis on commonly encountered situation.
Critical Illness ; Curriculum ; Decision Making ; Education ; Education, Medical ; Ethics ; Ethics, Medical* ; Humans ; Outpatients ; Students, Medical* ; Surveys and Questionnaires

In 1962, Durand suggested the term primary lactose intolerance for the disorder withch resulted from a defect of the lactase activity in the intestinal mucosa. However primary lactose intolerance is rare and it is not commonly encountered in routine pediatric practice. Apart from such a primary lactose intolerance, diarrhea, meteorism, and abdominal discomfort after taking lacose containing food are more frequently encoumtered in case of gastroenteritis in which damage of the intestinal mucosa and coating of the mucosa by inflammatory secretions lead to decreased lactase it form the primary lactose intolerance. It is now considered that secondary lactose intolerance may play an important role in case of infantile diarrhea commonly encoutered in pediatric practice. The auther tried the lactase preparation Galantase?to evaluated it's clinical effect on infantile diarrhea of various kind (50 cases). Evaluation of the effect of Galantase was made on the bases of the following criteria. l Marked effective ; nature of stools and number per day returned to normal within 3 days after Galantase administration. l Effective ; nature of stools and number per day decreased within 3 days after Galantase administration. l Ineffective ; all stools remained unchainged and diarrheic. The results obtsined by this study are as followes l Marked effective ; 78 % l Effective ; 12 % l Slight effective ; 4% l Ineffective ; 6% There was no undesirable side effect observed in all 50 cases. Based upon the above effective rate, we concluded that the Galantase is a quite effective medicament for infantile diarrhea, especially for primary and secondary lactose intolerance.
Diarrhea ; Diarrhea, Infantile* ; Gastroenteritis ; Infant ; Intestinal Mucosa ; Lactase ; Lactose Intolerance ; Meteoroids ; Mucous Membrane

OBJECTIVES: Nickel (Ni) is present in many industrial working environments and consumer products, and is one of the leading cause of allergic contact dermatitis, which is a typical delayed (type IV) hypersensitivity reaction. However, the mechanism by which nickel causes this pathology is not well known. The contact dermatitis induced by nickel is mediated, primarily, through macrophages. This property was similar to autotoxicity related nitric oxide (NO) production. NO mediated cytotoxicity was dependent on both H2O2 and peroxynitrite (OONO-). The purpose of this study was to elucidate the role of NO/H2O2 in the cytotoxicity induced by nickel. Therefore, this study was designed to examine whether nickel could modulate NO/H2O2 production and how the Ni may affect ATP production, intracellular GSH level, and cell viability. METHODS: This study was based on the observations of cultures of RAW 264.7 cells, which originated from a tumor in a Balb/c mouse that had been induced by the Abelson murine leukemia virus. RAW 264.7 cells were treated with either Ni, N- onomethyl-L- arginine (NMLA), catalase, and DTT for 24-72 h. The cytotoxicity of the nickel was measured via the cell viability and NO2-, H2O2, GSH, and the mitochondrial function was evaluated by the adenosine triphosphate (ATP) production in the RAW 264.7 cells. RESULTS: The NO2- synthesis of RAW 264.7 cells increased with the increase in concentrations of Ni up to 50-micrometer, after 24 and 48 h of exposure, but then decreased at concentrations greater than 50-micrometer, and with time periods exceeding 48 h. In contrast, viability of cells and intracellular GSH level decreased in the presence of Ni in a dose and time dependent manner. However, the H2O2 synthesis of RAW 264.7 cells was not changed in the all experimental conditions. The NO2- synthesis of the cells was higher than control, whereas ATP, GSH and viability were lower than control in addition of Ni and the pretreatment of catalase or DTT prior to addition of Ni. CONCLUSIONS: These results suggest that NO plays an important role in the cytotoxicity of Ni. Cytotoxicity of Ni may exert through modulation of NO production and associate with a decrease in intracellular GSH levels.
Abelson murine leukemia virus ; Adenosine Triphosphate ; Animals ; Arginine ; Catalase ; Cell Survival ; Dermatitis, Allergic Contact ; Dermatitis, Contact ; Hydrogen Peroxide* ; Hydrogen* ; Hypersensitivity ; Macrophages ; Mice ; Nickel* ; Nitric Oxide* ; Pathology ; Peroxynitrous Acid