No abstract available.
Hepatitis*

PURPOSE: In adriamycin(ADR)-induced cardiomyopathy, several different mechanisms are suggested. However, little information is available regarding the role of apoptosis. In the present study, we examined the induction of apoptosis on ADR treatment and anti-apoptotic effects of probucol, a lipid-lowering drug, and we also studied the changes of bcl-2 expression in order to see the molecular mechanisms underlying the effect of probucol. METHODS: Cardiac myocytes were isolated from 3-day-old rats, and cultured in low(1 pM) or high doses(10pM) of ADR for 24 hours. Probucol(50 pM) was added 30 minutes before ADR administration. Apoptosis was determined by TUNEL staining, and bcl-2 expression was estimated by immunocytochemistry. RESULTS: The number of TUNEL-positive cells significantly increased in both groups treated with ADR. However, anti-apoptotic effect of probucol was evident only in low dose. In addition, the expression of bcl-2 was significantly increased only in the low-dose ADR treatment group and its expression was inhibited by pretreatment of probucol. CONCLUSION: These results suggest that apoptosis might play an important role in ADR-induced cardiotoxicity, and ADR-induced apoptosis was partially prevented by pretreatment of probucol. And ADR-induced apoptosis was not related with depression of bcl-2. Additionally, inhibition of bcl-2 gene expression of low-dose ADR treatment group by probucol suggests that another cell survival mechanism could be implicated in the action of probucol. (J Korean Pediatr Soc 2000;43:746-754)
Animals ; Apoptosis* ; Cardiomyopathies ; Cell Survival ; Depression ; Doxorubicin ; Genes, bcl-2 ; Immunohistochemistry ; In Situ Nick-End Labeling ; Myocytes, Cardiac* ; Probucol* ; Rats*

BACKGROUND: Dizziness is a common complaint in patients presenting to the emergency room and that has various pathologic causes. This study investigate the clinical differences in dizziness between the central origin and the peripheral origin and to provides the clues far diagnosis and proper treatment. METHODS: We analysed 290 patients with dizziness during 12 months period prospectively, who visited in ED, Inha University Hospital from Jan. 1997 to Dec. 1997. We analysized sex ratio, characteristics of the dizziness, associated past illness, associated symptoms, severity, results of the special radiologic study, nystagmus type, and causes of central origin and peripheral origin dizziness. RESULTS: Male to female ratio was 1:1.4 in central origin(n=165) and 1:2.0 in peripheral origin(n=125). Most common age group was 11th decade in both groups. According to the characteristics of the dizziness, rotation sense was the main complaint of the peripheral origin dizziness. Most common past illness was hypertension in both groups. MRI has diagnostic priority than CT scan in central origin dizziness. Types of nystagmus has some significant differences between two groups. CONCLUSION: Dizziness may represented as a sign of significant pathological neurologic status especially in central origin. So we must precisely evaluate the patient history, neurologic examination of the inner ear and CNS, and special radiologic study incliding MRI.
Diagnosis ; Dizziness* ; Ear, Inner ; Emergency Service, Hospital ; Female ; Humans ; Hypertension ; Magnetic Resonance Imaging ; Male ; Neurologic Examination ; Prospective Studies ; Sex Ratio ; Tomography, X-Ray Computed

Hantaviruses are distributed in rodent population world-widely even in geographical areas where hemorrhagic fever with renal syndrome (HFRS) has not been reported. Va.ictus species of Family Muridae and Arvicolidae serve as the natural reservoirs of hantaviruses. Hantaan virus, Seoul virus, Puumala virus, Prospect Hll virus, Sin Hombre virus and New York virus are members of genus Hantavirus and isolated from lungs of A. agrarius, C glareolus, M. pennsylvanicus, P. maniculatus and P. leucopus respectively. This experiment was intended to find the distribution of hantavirus infection among wild rodents and isolate the hantavirus from lung tissue of seropositve Apodemus peninsulae, and compared the nucleotide and amino acid sequences with prototype of hantaan virus 76-118 strain. Hantaviral sequences were amplified from lung tissues of A. peninsulae by reverse-transcriptase polymerase chain reaction. Alignment and comparison of the 324 nucleotide of G2 region of M-genomic segment diverged 4.6% and 0% at the nucleotide and amino acid levels, and complete N protein-coding region of S-genomic segment diverged 3.7% and 1.4% nucleotide and amino acid levels, respectively. This is the report to spill-over on the hantaan virus from A. peninsulae to A. peninsulae in Korea.
Amino Acid Sequence ; Animals ; Gyeonggi-do* ; Hantaan virus ; Hantavirus Infections ; Hantavirus* ; Hemorrhagic Fever with Renal Syndrome ; Humans ; Korea ; Lung ; Muridae ; Murinae* ; Polymerase Chain Reaction ; Puumala virus ; Rodentia ; Seoul virus

No abstract available.
Animals ; Hepatitis A* ; Hepatitis* ; Mice ; Mice, Inbred ICR*

No abstract available.
Apoptosis* ; Prostate* ; Prostatic Hyperplasia* ; Prostatic Neoplasms* ; Proto-Oncogene Proteins c-myc*

Transient osteoporosis of the hip is a self-limited condition of uncertain etiology and pathogenesis that affects young and middle aged adults. Even its clinical features are similar to the features of osteonecrosis the prognosis and clinical end result are quite different. So differential diagnosis between the two is very important. We present a case of transient osteoporosis of the hip in middle aged man, which was completely reeovered after conservative treatment.
Adult ; Diagnosis, Differential ; Hip ; Humans ; Middle Aged ; Osteonecrosis ; Osteoporosis ; Prognosis

Seventeen patients with classical rheumatoid arthritis have been treated with gold sodium thiomalate(G.S.T) injection and followed up for 1.7 years on average. The results obtained are as follows: 1. Clinical improvement was obtained in 12(70.3%) out of 17 cases, but only in 5 cases(29.3%) marked and persisting improvement was obtained. Such improvement was first noticed when the total dose of the gold sodium thiomalate reached 500mg or more, and also noticed about 10 weeks after initiation of G.S.T therapy. 2. Changes in laboratory parameters such as hemoglobin, hematocrit, eosinophilia, titers of rheumatoid factor and C-reactive protein, and proteinuria began to appear at the time of the clinical improvement. 3. Adverse reaction consisted mostly of mucocutaneous lesions. The main causes of drop-out during therapy also are severe skin rashes and pruritus. Most of the adverse reactions appeared when the total dose of G.S.T. administered reached over 500mg. In two severe cases skin rashes terminated the gold therapy. Our findings suggest, because of high incidence of adverse reaction during G.S.T therapy, repeated careful clinical and laboratory examination of the patient are mandatory especially when the total dose of G.S.T is reached 500mg. In spite of the well documented reports of the maintenance gold therapy for rheumatoid arthritis it is felt that the maintenance gold therapy should be studied further before it can be safely used as a routine in daily rheumatology practice because of its toxicity.
Arthritis ; Arthritis, Rheumatoid ; C-Reactive Protein ; Eosinophilia ; Exanthema ; Gold Sodium Thiomalate ; Hematocrit ; Humans ; Incidence ; Proteinuria ; Pruritus ; Rheumatoid Factor ; Rheumatology ; Sodium

Hemorrhagic fever with renal syndrome (HIFRS), scrub typhus, murine typhus and leptospirosis have been the principal acute febrile diseases in Korea. To evaluate the seroepidemiologic patterns of acute febrile illness, sera collected from 2,423 patients in 1996 were examined for antibodies against Hantaan virus, Orientia tsutsugamushi, Rickettsia typhi, and Borrelia burgdorferi by indirect immunofluorescent antibody technique (IFA) and macroscopic agglutination test for Leptospira interogans. Seropositive cases against O. tsutsugamushi, Rickettsia typhi, Leptispira interogans and Hantaan virus were 192 (7.9%), 193 (8.0%), 12 (0.5%) and 324 (13.4%), respectively. Male was more affected in HFRS and murine typhus contrasting to scrub typhus and leptospirosis in female. Most positive cases occurred during October and November for scrub typhus, and during November and December for HFRS. These results showed similar patterns with previous epidemical data for recent couple of years, and possibly implied no significant changes occurred in ecologic situations for acute febrile diseases in Korea.
Agglutination Tests ; Antibodies ; Borrelia burgdorferi ; Female ; Hantaan virus ; Hemorrhagic Fever with Renal Syndrome ; Humans ; Korea* ; Leptospira ; Leptospirosis ; Male ; Orientia tsutsugamushi ; Rickettsia typhi ; Scrub Typhus ; Typhus, Endemic Flea-Borne

Multiple species of muridae and arvicolidae rodents serve as the natural reserviors of hantaviruses. Hantaviruses are distributed in rodent populations world-widely even in geographical areas where hemorrhagic fever with renal syndrome (HFRS) has not been reported. Serologic diagnosis of infection, using hantaviral antigen, indicates that hantaviruses are wider distributed in wild rodents. This study was designed to intended the hantavirus infection among wild rodents captured in Kyebang mountain, Kangwon-do in Korea. A total of 216 wild rodents in 3 species were trapped in July and September in 1995. Serological evidence for hantaviruses infection were tested against five hantavirus antigens by indirect immunofluorescent antibody technique (IFA). Among 100 Eothenomys regulus, 78 Apodemus peninsulae and 38 Apodemus agrarius (IFA). Among 100 Eothenomys regulus, 78 Apodemus peninsulae and 38 Apodemus agrarius; 12 C. regulus, 15 A. peninsulae and 6 A. agrarius were IF antibody positive against hantaviruses. This data suggest that Eothnomys regulus and Apodemus peninsulae would be a natural reservoir of hantaviruses.
Animals ; Diagnosis ; Gangwon-do ; Hantavirus Infections* ; Hantavirus* ; Hemorrhagic Fever with Renal Syndrome ; Korea ; Muridae ; Murinae ; Rodentia*