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우리나라 가공식품(加工食品)중의 Clostridia perfrigens의 분포(分布)
한왕수,조양자,권종규,서인수,Han, Wang-Soo,Cho, Yang-Ja,Kwon, Chong-Kyu,Suh, Inn-Soo 대한미생물학회 1976 大韓微生物學會誌 Vol.11 No.1
A total of 100 swelled, springered or flippered canned meat and fish products were studied the degree of contamination with clostridias and serological relationships to Hobbs'13 "heat resistant" types, heat resistance of spores and susceptibility of Clostridium perfringens isolates to several antibiotics. Samples examined in this study were collected from Seoul area from June to October, 1975 and prepared in Korea. Clostridias were isolated from 46(46%) of these samples; 19 strains of Cl. perfringens, 9 strains of Cl. oedematiens A, B, 5 strains of Cl. sordelli, each 3 strains of Cl. chauvoei, Cl, oedematiens C.E, and Cl. difficile, 2 strains of Cl. sporogenes. The highest percentage of contamination by Cl. perfringens was found in beef products(26.5%), and the following(5.2%) in mackerel pike and none in baitop shell. whale, manna brand. and top shell. One of 19 isolates of Clostridium perfringens found in meat products was shown to produce heat resistant spores which resist $100^{\circ}C$ for 60 minutes and others were heat labile strains which is killed at $90^{\circ}C$ for 30 minutes. The distribution of Hobbs' serotype of 19 isolates were each 4 strains of type 6, 8, and 11, 1 strain of type 13 and others untypable. 19 Strains of Cl. perfringens were shown a marked susceptibility to cefamezin, lincomycin and minocin and relatively sensitive to vibraimycin, geopen, and chloramphenicol. A marked resistance to kanamycin, colimycin, and gentamycin were shown. Aerobic enteropathogens from samples were not recovered.
한왕수 한양대학교 의과대학 1983 한양의대 학술지 Vol.3 No.1
Seventy eight Shigella were isolated in Seoul area during a period from 1980 to 1981 and they were classified by means of biochemical and serological test. These strains originated from patients who had clinically been diagnosed as bacillary dysentery and other gastrointestinal complaints. Sensititivity test to 12 kinds of antimicrobial agents were carried out by means of Agar plate dilution technique in trypticase soy agar. Readings were made after 24 hours at 37℃ and determined by the criteria of complete inhibition of growth of test organism. A strain was regarded as resistant if it's growth was inhibited in ≥100mcg/ml of Tetracycline(Tc), Chloramphenicol(Cp), Streptomycin(Sm), Sulfanilamide(Sa), and Ampicillin(Ap), ≥25Mcg/ml of Kanamycin(Km), Cephaloridine(Cep), Furazolidone(Fz), Nitrofurantion(Nf), and Nalidixic acid(Na) and ≥6.25mcg/ml of Gentamicin(Gm), of total strains of 64 belonging to Shigella(Sh) flexneri and 14 to Sh. sonnei. The susceptibilities of organism to 12 drugs examined were found to be the highest to Km and Na, and lowest to Sa and Tc. In other hand, the susceptibilities to Tc, Cp, Sm, and Sa for Sh. flexneri strains were shown to be higher than that of Sh. sonnei strains. Shigella species showed a more significant resistance to Tc(84.6%), Cp(74.4%), Sm(80.8%), and Sa(94.7%), and showed a resistance to Nf(76.9%), Ap(62.8%), Cep(26.9%), Fm(23.1%), Gm(10.3%), Fz(10.3%), Na(6.4%), Km(0.0%) in order it was also found that there is marked difference between Sh. flexeri and Sh. sonnei to Sm, Sa, Ap and Tc, Cp pattern. The most predominant and remarkable differences were in thge frequency of these resistance among Sh. flxneri and Sh. sonnei strains. The multiple drug-resistant strains which were shown to be resistant to Tc, Cp, Sm, Ap or Cep were also resistant to Nf, Cep and Sa.
Campylobacter pylori 위장내 분리위치에 따른 병원성
한왕수,한상진,김정목,조양자 대한감염학회 1989 감염 Vol.21 No.1
Compylobacter pylori may cause gastritis and has been proposed as an etiologic factor in the development of peptic ulcer. However, it is unknown where is primary colonization sites of C. pylori. Isolation sites of C. pylori in stomach and duodenum and pathology in antrum were evaluated in 90 subjects endoscoped at Hanyang University Hospital in Seoul, Korea. C. pylori detected in biopsied specimens of 40 (74%) of 54 C. pylori-positive patients at antrum only, and 13 (24%) of the same patients at antrum and body, but did not detected in duodenal biopsied specimens. Antral pathology results were chiefly found in active chronic gastritis. These findings strongly suggest that antrum is a primary colonization sites of C. pylori and the agent may be spread within stomach from the antrum.
병원녹농균(病院綠膿菌)의 동종균접합(同種菌接合)에 의한 다제내성(多劑耐性)의 전달(傳達)
김정,한왕수,서인수,Kim, Chung,Han, Wang-Su,Seo, In-Su 대한미생물학회 1979 大韓微生物學會誌 Vol.14 No.1
Two hundred and ninety-five strains of Peudomonas aeruginosa isolated from clinical sources were tested for drug resistance and demonstration of R plasmids by intraspecies conjugation system. Sixty strains were found highly resistant to two or more of drugs. The rate of resistant strains were 38.9% to kanamycin(km), 33.2% to streptomydn(sm), 22.7% to sulfisomidine(Sa), 14.2% to chloramphenicol(Cp), 13.8% to tetracycline(Tc), 3.0% to carbenicillin(Cb), and to gentamicin(Gm), respectively. But no strains was resistant to nalidixic acid and colistine. They were resistant to per milliliter to more than $400{\mu}g$ per ml. of Tc, $800{\mu}g$ per ml of Cp and of Sm, $6,400{\mu}g$ per ml. of Sa, $200{\mu}g$ per ml. of Cb, $100{\mu}g$ per ml. of Gm, and $25{\mu}g$ per ml. of colistine. Forty-three strains of Pseudomonas aeruginosa could be transferred their resistance to Pseudomonas aeruginosa 2-70, 1005 rifampin resistant FP-auxotrophic mutant. Of sixty multiple resistant strains, forty-three(71.6%) demonstrated R plasmids; nineteen carried resistance to(Tc Cp Sm Sa), six to(Tc Cp Sm), three to(Tc Cp Sa), and Cp, five to(Tc Sm Sa), two to(Tc Sa), (Cp Sm) and Tc, and one to(Cp Sm Sa). Degree of resistance of recipients recieving R plasmids from donors were almost the same level of resistance as the donor in regardless of mating temperature at $25^{\circ}C$ and $37^{\circ}C$. Resistance to Tc, Sm, and Sa were transferred to a very few of recipient cells at five minutes after mating with donor and recipient cells but resistance to Cp were transferred to the majority of recipient cells. The transfer frequency of Tc, Cp, Sm, and Sa resistance from donors to recipients were from $1.0^{-1.4}\;to\;1.0^{-3.5}$ at $25^{\circ}C$ for 18 hours of incubation and were from $1.0^{-1.5}\;to\;1.0^{-3.5}$ at $37^{\circ}C$ for 18 hours of incubation.
金基豪,韓王洙,徐仁銖 한양대학교 의과대학 1982 한양의대 학술지 Vol.2 No.1
A total of two hundres and eighty-nine strains isolated during 1978 to 1980 in Seoul area were typed according to their ability to produce pyocines by the method of Gillies and Govan using ox blood trypticase soy agar. The strains of Pseudomonas were isolated from pus, sputum, urine, feces, blood, nasal and throat discharges, wound, hospital environment and unknown origin. The typing was repeated three times at an interval of about one month and serogically typing according to Homma et al. using same cultures were carried out. Three and two out of three results of pyocine typing came to a concurrence: 49.1%, and 45.3% respectively in the original table and 5.5% non-reproducible (NR) strains. Two out of three results came to a concurrence: 98 strains of Type 1, 44 strains of Type 3. 30 strains of Type 10, 25 strains of non-producer strains (NT), 15 strains of Type 6, 6strains each of Type 5 and 35,5 strains of Type 22, 3 strains each of Type 2 and 23, 2 strains each of Type 18, 27, 29, 30, 31, and 33, 1 strain each of Type 11 and 26 in the original table and 24 UC strains. Eighteen pyocine types were distributed. There was a difference in distribution of type by the year of isolation and specimen source and pyocine typing was reliable method to monitor the patterns of infections due to Pseudomonas aeruginosa. The correlation between pyocine type and serotype were found namely in 1 and B, 1 and F, and non-producer (nt) and I. On the other hand. the method of pyocine and serotyping were useful for subtyping one another.