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장염환자에서의 Campylobacter fetus subsp . jejuni 분리율
이귀녕,정윤섭,이삼열 대한미생물학회 1982 大韓微生物學會誌 Vol.17 No.1
C. fefus subsp. Jejuni has been reported to be an important enteric pa.thogen in many parts of the world. Although the infection has been reparted in Korea, the incidence is not known. In this :study the reaults of stool culture during the period oi August 1981 to July 1982 at Yonsei Medical Center was ana.lyzed and the foliowing resuits were obtaioed. 1. C. fetus subsp. Jejuni was isolated from 0. 8/a of stool specimens. The isolation rate was lower than that of salmonella (3.3%) and shigella (7.1%). The isolation was most frequent in June and from 15-year-old patients. 2. All of the isola.tes from the patients were susceptible to chloramphenicol aod erythromycin. It was noteworthy that 4 isolates were resistant to all of the aminoglycosides, I,e., amikacin, gen- tamicin, kanamycin and tobramycin. 3. We also isolated C. fetus subsp. Jejuni iram chicken. When the susceptibility of the isolates was compared to that of tbe isolates from human the former were less susceptible to erythro- myein (34.1%) and tetracycline (38.6%).
( Yi Yong Luo ),( Jin Kui Yang ),( Ming Liang Zhu ),( Jin Ping Yan ),( Minghe Mo ),( Ke Qin Zhang ) 한국미생물 · 생명공학회 2008 Journal of microbiology and biotechnology Vol.18 No.1
Four series (S, M, R, and W) of Alternaria longipes isolates were obtained based on consecutive selection with Dimethachlon (Dim) and ultraviolet irradiation. These isolates were then characterized according to their tolerance to Dim, sensitivity to osmotic stress, and phenotypic properties. All the selected Dim-resistant isolates showed a higher osmosensitivity than the parental strains, and the last generation was more resistant than the first generation in the M, R, and W series. In addition, the changes in the Dim resistance and osmotic sensitivity were not found to be directly correlated, and no distinct morphologic characteristics were found among the resistant and sensitive isolates, with the exception of the resistant isolate K-11. Thus, to investigate the molecular basis of the fungicide resistance, a group III two-component histidine kinase (HK) gene, AIHK1, was cloned from nineteen A. longipes isolates. AIHK1p was found to be comprised of a six 92-amino-acid repeat domain (AARD), HK domain, and response regulator domain, similar to the Os-1p from Neurospora crassa. A comparison of the nucleotide sequences of the AIHK1 gene from the Dim-sensitive and -resistant isolates revealed that all the resistant isolates contained a single-point mutation in the AARD of AIHK1p, with the exception of isolate K-11, where the AIHK1p contained a deletion of 107 amino acids. Moreover, the AIHK1p mutations in the isolates of each respective series involved the same amino acid substitution at the same site, although the resistance levels differed significantly in each series. Therefore, these findings suggested that a mutation in the AARD of AIHK1p was not the sole factor responsible for A. longipes resistance to dicarboximide fungicides.
Weight Gain in Pregnancy, Maternal Age and Gestational Age in Relation to Fetal Macrosomia
( Yi Li ),( Qi-fei Liu ),( Dan Zhang ),( Ying Shen ),( Kui Ye ),( Han-lin Lai ),( Hai-qing Wang ),( Chuan-lai Hu ),( Qi-hong Zhao ),( Li Li ) 한국임상영양학회 2015 Clinical Nutrition Research Vol.4 No.2
To investigate the possible risk factors related to macrosomia. Pregnant women and their newborns (n = 1041) were recruited from a cohort study in Maternal and Child Care Center of Hefei from January 2011 to July 2012. Questionnaires were applied to collect the demographic data besides the medical records. Detailed health records of the entire pregnancy were obtained using retrospective study. Meanwhile the data of neonatal outcomes was prospectively tracked. Associations between exposure risk factors and macrosomia were analyzed using Pearson’s chi squared test. Logistic regression models were used to assess the independent association between these potential predictors and macrosomia. The incidence of macrosomia of this cohort was 11.24% of which male: female = 2.55:1. Male incidence (8.07%) of macrosomia was higher than female (3.17%), p < 0.001. Body mass index (BMI) before pregnancy (pre-BMI), maternal height, parity were not independently associated with macrosomia; multiple logistic regression analysis indicated that macrosomia was mainly independently associated with weight gain in pregnancy (OR=1.14,95% CI [1.10-1.19]), maternal age (OR = 1.09,95% CI [1.03-1.15]) and gestational age (OR = 1.62,95% CI [1.31-1.99]), respectively. Our findings indicate that weight gain in pregnancy, maternal age and gestational age should be considered as independent risk factors for macrosomia.
Yi Lan Fang,Shambbu Prasad Dhital,Kui Hua Li,Dong Man Khu,Hae Young Kim,Ye Su Song,Hak Tae Lim 한국원예학회 2005 Horticulture, Environment, and Biotechnology Vol.46 No.2
In vitro plantlets of potato genotype ‘F9-99’ infected with PLRV and PVY were used for the virus eradication using heat and chemical treatments. Subculture medium was added with acetylsalicylic acid (ASA) (10??, 10??, and 10?⁴ M) and ribavirin (10, 15, and 20 ㎎ㆍL?¹) alone or in combinations. The plantlets were incubated at 25℃ (control), and alternating heat treatments 35/30℃ for 1, 4, and 8 h or 42/25℃ for 4 h. Virus status of the plantlets were examined by means of double antibody sandwich-enzyme linked immunosorbent assay and reverse transcription polymerase chain reaction. After 4?8 weeks of treatment, 40, 51, 41, 36, and 0% survival were observed in the control (MS and 25℃), ASA plus ribavirin (25℃), MS plus heat treatment (35/30℃), ASA plus ribavirin (35/30℃), and MS medium with heat treatment (42/25℃), respectively. As for virus eradication, heat treatment (35/30℃) with 1 h alternating thermo-cycle resulted in 100% PVY elimination, but it was much more difficult to remove the PLRV from the double-infected potato plantlets with PVY and PLRV. The highest rate of PLRV eradication was 60% from the combined treatment of 10?? M ASA, 20 ㎎ㆍL?¹ ribavirin, and heat treatment at 35/30℃ for 8 h alternating temperature.