To clarify the mechanism of the protective effect of hemodialysis on lipid peroxidation in RBC membrane structures, the level of malondialdehyde (MDA) which is the lipid peroxidation product, and the activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase, and glutathione peroxidase (GSH-Px) were determined before and after hemodialysis in the RBCs from 20 patients with end stage renal disease (ESRD), and from 14 healthy subjects. Before dialysis, MDA levels in the RBCs from the patients with ESRD were higher than those from healthy controls. SOD and catalase activities in the RBCs were lower. After hemodialysis, MDA, SOD, and catalase in the RBCs from the patients with ESRD were normalized. These results indicate that hemodialysis treatment is helpful to protect the peroxidative darnage through normalizing the activities of antioxidant enzymes.
Catalase ; Dialysis ; Erythrocytes* ; Glutathione Peroxidase ; Humans ; Kidney Failure, Chronic* ; Lipid Peroxidation ; Malondialdehyde* ; Membranes ; Renal Dialysis* ; Superoxide Dismutase

No abstract available.
Korea*

BACKGROUND AND OBJECTIVES: Cisplatin (CP), an antitumor agent widely used in the treatment of head and neck cancers, has side effects such as ototoxicity and nephrotoxicity. These side effects are closely related to oxidative stress. In the present study, we attempted to suppress CP-induced ototoxicity in rats by administering melatonin, an antioxidant. MATERIALS AND METHOD: Male Sprague-Dawley rats were divided into different groups and were treated as follows: 1) saline control, 2) CP (16 mg/kg, i.p.), 3) CP plus melatonin (10 mg/kg, i.p.). The rats were sacrificed at the 6th day after CP treatment. RESULTS: CP-treated rats showed increase in cochlear malondialdehyde, hydrogen peroxide, glutathione peroxidase and glutathione reductase levels, and the decrease in cochlear superoxide dismutase (SOD) and catalase levels. CP-treated rats showed markedly decreased in the number of stereocilia on the inner hair cells and mildly decreased in the number of outer hair cells in organ of Corti under the light and scanning electron microscopic examination. Light and electron microscopic findings, and cochlear hydrogen peroxide, malondialdehyde, SOD, catalase, glutathione peroxidase and glutathione reductase levels were restored in the rats injected with CP plus melatonin than those with CP alone. CONCLUSION: These results suggest that melatonin suppresses CP-induced ototoxicity via the suppression of the increased production of reactive oxygen species.
Animals ; Catalase ; Cisplatin* ; Glutathione Peroxidase ; Glutathione Reductase ; Hair ; Head ; Humans ; Hydrogen Peroxide ; Male ; Malondialdehyde ; Melatonin* ; Neck ; Organ of Corti ; Oxidative Stress ; Rats* ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; Stereocilia ; Superoxide Dismutase

BACKGROUND: Cisplatin (CP), an antitumor agent widely used in the treatment of cancers, has nephrotoxicity. This side effect is closely related to oxidative stress. In the present study, we attempted to reduce CP-induced nephrotoxicity in rats by administering melatonin, an antioxidant. METHODS: Male Sprague-Dawley rats were divided into different groups and were treated as follows: (1) saline control; (2) CP (16 mg/kg, i.p.); (3) CP plus melatonin (10 mg/kg, i.p.). The rats were sacrificed at the 6th day after CP treatment. To evaluate renal damage, BUN, serum creatinine, creatinine clearance and microscopic examination were done. Hydrogen peroxide which is one of the oxygen free radicals, and malondialdehyde which is known as a marker of the oxygen free radical mediated injury, and the activities of the antioxidant enzymes such as superoxied dismutase, catalase, and glutathione peroxidase were also measured. RESULTS: CP-treated rats showed the increase of BUN, serum creatinine, malondialdehyde, hydrogen peroxide and superoxide dismutase (SOD) in kidney. And CP-treated rats also showed the decrease of creatinine clearance and catalase levels. CP-treated rats showed severe tubular necrosis in proximal convoluted tubules under the light microscopic examination. The light microscopic finding and all of the parameters except SOD were restored in the rats injected with CP plus melatonin than those with CP alone. SOD level was higher in the rats injected with CP plus melatonin than that with CP alone. CONCIUSION: These results suggest that melatonin suppresses CP-induced nephrotoxicity by suppressing the production of reactive oxygen species via the activation of SOD and catalase.
Animals ; Catalase ; Cisplatin* ; Creatinine ; Free Radicals ; Glutathione Peroxidase ; Humans ; Hydrogen Peroxide ; Kidney ; Male ; Malondialdehyde ; Melatonin* ; Necrosis ; Oxidative Stress ; Oxygen ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species ; Superoxide Dismutase

BACKGROUND: Micrognathia is the prime, constant bony finding that signals trouble for access to the airway. Anatomical factors of difficult tracheal intubation in micrognathia have been evaluated. METHOD: Forty one patients with micrognathia were divided into 3 groups based on modified Mallampati classification. Lateral cephalometric view taken preoperatively was used to measure 13 anatomical factors. Kruskal-Wallis test and discriminant analysis were used to select the most predictable factors for distinguishing between the difficult and easy groups. RESULTS: The most discriminating factors are mandibulo-hyoid distance(V12), atlanto-occipital distance(V10) and mentum-hyoid distance(V11). The discriminant analysis using above 3 factors gives the following discriminant functions(Y1= 0.7924(V12) - 0.2154(V10) - 0.3531(V11) (discriminant function 1), Y2= -0.2177(V12) + 0.8221(V10) -0.6304(V11) (discriminent fuction 2)) and the discriminating power of difficult intubation is 72.9%. CONCLUSIONS: Modified Mallampati classification and lateral cephalometric assessment of 3 anatomical factors can predict the difficult intubation.
Classification ; Humans ; Intubation*

BACKGROUND: Clinical manifestations and complications of measles are more severe in adults than children. But, there has been few clinical and epidemiologic data about adult measles in Korea. OBJECTIVE: We investigated clinical features, laboratory findings, disease courses and complications and discussed the reason why measles incidence has been increasing recently in young adults to find out the solutions to prevent measles. METHOD: From April 1999 to February 2001, we examined prodromal symptoms, skin rash, complications, routine CBC, and blood chemistry of 42 adults who were admitted in KangBuk SamSung Hospital for measles and performed qualitative serum measles specific IgM and IgG antibody test using ELISA method. RESULTS: Age distribution of most adult measle patients was between 15 and 25 years old(78.6%). Fever was found in all patients and cough, coryza, headache, myalgia, conjunctivitis, sore throat, nausea, diarrhea, and vomit were found in decreasing order of frequency. Skin rashes were started from the face and spread to trunk, arms and then legs in 37 patients out of 42. Five patients had skin rash in the face and trunk at the same time, and one had hemorrhagic rash. Koplik's spots were found in 26 patients (62%). Among them, 2 had Koplik's spots before the rash and 24 had Koplik's spots with the rash simultaneously or thereafter. Koplik's spots were disappeared as skin rash disappeared. Exfoliative dermatitis was found following the skin rash in one patient. Among 26 patients who performed qualitiative serum measles specific IgM and IgG antibody test using ELISA, the seropositivity of measles specific IgM was 70%, of measles specific IgG was 27%, and of both measles specific IgM and IgG was 12%. Complications were like this; hepatitis in 23, cervical lympadenitis in 20, laryngitis and bronchitis in 7, otitis media in 4, pneumonia on chest X-ray in 3, hepatosplenomegaly on upper abdomen ultrasonography in 5. Two patients were in pregnancy of 12 and 16 weeks, and the former had spontaneous abortion. Pnemonia and otitis media were recovered within average 5 days after administrating antibiotics and antipyretics.
Abdomen ; Abortion, Spontaneous ; Adult* ; Age Distribution ; Anti-Bacterial Agents ; Antipyretics ; Arm ; Bronchitis ; Chemistry ; Child ; Conjunctivitis ; Cough ; Dermatitis, Exfoliative ; Diarrhea ; Enzyme-Linked Immunosorbent Assay ; Epidemiologic Studies* ; Exanthema ; Female ; Fever ; Headache ; Hepatitis ; Humans ; Immunoglobulin G ; Immunoglobulin M ; Incidence ; Korea ; Laryngitis ; Leg ; Measles* ; Myalgia ; Nausea ; Otitis Media ; Pharyngitis ; Pneumonia ; Pregnancy ; Prodromal Symptoms ; Thorax ; Ultrasonography ; Young Adult

BACKGROUND: Clinical manifestations and complications of measles are more severe in adults than children. But, there has been few clinical and epidemiologic data about adult measles in Korea. OBJECTIVE: We investigated clinical features, laboratory findings, disease courses and complications and discussed the reason why measles incidence has been increasing recently in young adults to find out the solutions to prevent measles. METHOD: From April 1999 to February 2001, we examined prodromal symptoms, skin rash, complications, routine CBC, and blood chemistry of 42 adults who were admitted in KangBuk SamSung Hospital for measles and performed qualitative serum measles specific IgM and IgG antibody test using ELISA method. RESULTS: Age distribution of most adult measle patients was between 15 and 25 years old(78.6%). Fever was found in all patients and cough, coryza, headache, myalgia, conjunctivitis, sore throat, nausea, diarrhea, and vomit were found in decreasing order of frequency. Skin rashes were started from the face and spread to trunk, arms and then legs in 37 patients out of 42. Five patients had skin rash in the face and trunk at the same time, and one had hemorrhagic rash. Koplik's spots were found in 26 patients (62%). Among them, 2 had Koplik's spots before the rash and 24 had Koplik's spots with the rash simultaneously or thereafter. Koplik's spots were disappeared as skin rash disappeared. Exfoliative dermatitis was found following the skin rash in one patient. Among 26 patients who performed qualitiative serum measles specific IgM and IgG antibody test using ELISA, the seropositivity of measles specific IgM was 70%, of measles specific IgG was 27%, and of both measles specific IgM and IgG was 12%. Complications were like this; hepatitis in 23, cervical lympadenitis in 20, laryngitis and bronchitis in 7, otitis media in 4, pneumonia on chest X-ray in 3, hepatosplenomegaly on upper abdomen ultrasonography in 5. Two patients were in pregnancy of 12 and 16 weeks, and the former had spontaneous abortion. Pnemonia and otitis media were recovered within average 5 days after administrating antibiotics and antipyretics.
Abdomen ; Abortion, Spontaneous ; Adult* ; Age Distribution ; Anti-Bacterial Agents ; Antipyretics ; Arm ; Bronchitis ; Chemistry ; Child ; Conjunctivitis ; Cough ; Dermatitis, Exfoliative ; Diarrhea ; Enzyme-Linked Immunosorbent Assay ; Epidemiologic Studies* ; Exanthema ; Female ; Fever ; Headache ; Hepatitis ; Humans ; Immunoglobulin G ; Immunoglobulin M ; Incidence ; Korea ; Laryngitis ; Leg ; Measles* ; Myalgia ; Nausea ; Otitis Media ; Pharyngitis ; Pneumonia ; Pregnancy ; Prodromal Symptoms ; Thorax ; Ultrasonography ; Young Adult

The term "choristoma" is used to describe a mass of histologically normal tissue presenting in an aberrant site. The authors have experienced a case of lingual osseous choristoma in a 17-year-old female patient, which was totally removed and followed up for 12 months without any evidence of recurrence or developments to other disease.
Adolescent ; Choristoma* ; Female ; Humans ; Recurrence

No abstract available.
Nail Diseases ; Nails, Malformed ; Melanoma ; Skin Neoplasms

PURPOSE: To investigate the effect of amniotic membrane transplantation (AMT) on recurrent herpetic keratitis with unhealed corneal epithelial erosion. METHODS: We performed AMT on 5 cases of herpetic keratitis from February 2004 to August 2005. We had applied two layers of fresh amniotic membrane over the corneal lesion and anchored by running suture technique with 10-0 nylon. RESULTS: After AMT, visual acuity improved in 5 eyes of 5 herpetic keratitis patients. In all patients the persistent epithelial erosion was healed and pain was subsided after surgery. CONCLUSIONS: The AMT shortened the usage of antiviral agents and antibiotics, increased compliance, and decreased corneal opacity and neovascularization. The AMT is an effective method for managing recurrent herpetic keratitis with unhealed corneal epithelial erosion that are refractory to conventional treatment.
Amnion* ; Anti-Bacterial Agents ; Antiviral Agents ; Compliance ; Corneal Opacity ; Humans ; Keratitis, Herpetic* ; Nylons ; Running ; Suture Techniques ; Visual Acuity