• Pediatric Infection and Vaccine
• /
• v.23 no.1
• /
• pp.62-66
• /
• 2016

Skin and soft tissue infections (SSTIs) caused by community-associated (CA)-methicillin-resistant Staphylococcus aureus (MRSA) have become a worldwide concern. An otherwise healthy 16-month-old Korean girl was admitted because of skin abscess on the left chest wall with a history of recurrent SSTIs since the age of 6 months. Immunologic evaluation including serum immunoglobulin level and nitroblue-tetrazolium (NBT) test were normal. Pus and nasal swab cultures revealed CA-MRSA ST714-SCCmec type IV with the Panton-Valentine leukocidin (PVL) genes, which was initially reported in the Netherlands in 2006 and has not been previously reported in Korea. The skin abscesses were successfully treated by needle aspiration and the use of antibiotics. In addition, nasal mupirocin was applied as a decolonization method. No more episodes of SSTI were observed over a follow-up period of 10 months.

• 한국생물공학회:학술대회논문집
• /
• 2002.04a
• /
• pp.317-320
• /
• 2002

To search for antioxidant compounds from plant resources, ethanol extracts of 10 plants species were investigated using DPPH method and SOD activity by NBT method. The highest activity was shown in the ethanol extracts of Schizandra Chinesis Baillon. And than, antioxidant effects and total polyphenol concentration were investigated in solvent fraction of ethanol extracts from Schizandra Chinesis Baillon. The DPPH inhibitory activity and SOD activity of ethyl acetate fraction (DPPH 51.6%, SOD 66.2%) and butanol fraction(DPPH 60.7%, SOD 67.4%) showed strong biological activities.

• Proceedings of the Korean Society of Applied Pharmacology
• /
• 1993.04a
• /
• pp.149-149
• /
• 1993

목적:동식물세포에는 superoxide(0$_{-2}$)의 불균화 반응을 촉매하는 superoxide dismutase (SOD)가 존재한다. 이 효소의 생리적 의의는 지금까지도 명확하게 되어있지 않는면이 많지만, 그 의의를 명확하게 하기위해서도 측정법의 확립이 필요하다. 방법: SOD측정 방법으로는 1) Cytochrome C method 2) Nitroblue tetrazoliun method (NBT법) 3) 면역학적 방법 4) 화학발광법 등이 있다. 실험 재료는 흰쥐, mouse, 토끼의 간을 이용하였으며, 또한, 노화 및 암세포를 이용한 방법을 이용하였다. 결과: Cytochrome C 방법을 통해서 각 장기조직 (신장, 간장, 폐)에서 SOD를 측정하였으며 SOD 활성이 낮은 암조직이나 배양세포에서는 NBT 방법이 측정방법으로 적합한 것으로 나타났으며 ,간장세포내에서의 SOD의 존재부위를 확인하는 방법으로는 면역 황금 표지방법을 사용하므로 간장 mitochondria 내에 Cu, Zn-SOD가 존재함을 알 수 있었다.

• Journal of Microbiology and Biotechnology
• /
• v.15 no.2
• /
• pp.310-320
• /
• 2005

A membrane-based oligonucleotide array was used to detect predominant bacterial species in human fecal samples. Digoxygenin-labeled 16S rDNA probes were generated by PCR from DNA that had been extracted from fecal samples or slurries. These probes were hybridized to an array of 120 oligonucleotides with sequences specific for 40 different bacterial species commonly found in human feces, followed by color development using an alkaline phosphatase-conjugated antibody and NBT /BCIP. Twenty of the species were detected by this method, but E. coli, which was present at $\~$1 $\times 10$^5$ CFU per gram feces, was not detected. To improve the sensitivity of this assay, reverse transcriptase-PCR was used to generate probes from RNA extracted from fecal cultures. Coupled with a chemiluminescence detection method, this approach lowered the detection limit for E. coli from $\~1$ $\times 10$^6$ to ${\leq}$ 1 $\times 10$^5$ These results indicate that the membrane-array method with reverse transcriptase-PCR and chemiluminescence detection can simultaneously identify bacterial species present in fecal samples at cell concentrations as low as${\leq}$ 1 $\times 10$^5$ CFU per gram.

• Korean Journal Plant Pathology
• /
• v.14 no.6
• /
• pp.636-641
• /
• 1998

Digoxigenin (DIG) was used to prepare nucleic acid probe for the detection of RNA of potato leafroll virus (PLRV) in the potato leaf extracts. The 0.6 kb coat protein (CP) gene cDNA of PLRV in plasmid pSPT 18 vector was labeled with digoxigenin by in vitro run-off transcription and then used for cRNA probe. In the several buffers tested for increase the total RNA extraction efficiency AMES buffer was the most suitable for this detection method. The RNA extracts from potato leaves shown symptoms of PLRV were dot blotted onto nylon membrane and hybridized with labeled RNA probes. After hybridization, labeled RNA bound to PLRV RNA on membrane was detected with anti-digoxigenin alkaline phosphatase. 5-bromo-4-chloro-3-indolyl-phosphate/nitroblue tetrazolium (NBT) salt and CSPD were used as substrate for colorimetric and film exposure detection, respectively. These detection methods were very sensitive allowing for detection of 1/32 diluted total RNA extract from 100 mg leaf tissue.

• Proceedings of the PSK Conference
• /
• 2003.10b
• /
• pp.207.1-207.1
• /
• 2003

The Aster tataricus is a chinese traditional medicine called “Ziwan” which has an expectorative and remediable cough action. The anti-oxidant activities of A. tataricus were investigated. The MeOH extract of A. tataricus showed strong anti-oxidant activity in the NBT(nitroblue tetrazolium) method system, and thus fractionated with several solvents in to the EtOAc, n-BuOH, CH$_2$Cl$_2$, H$_2$O fraction. The EtOAc soluble fraction exhibiting strong anti-oxidant activity was further purified by repeated silica gel and sephadex LH-20 column chomatography. (omitted)

• Analytical Science and Technology
• /
• v.32 no.3
• /
• pp.96-104
• /
• 2019

Agastache rugosa, known as Korean mint, is a medicinal plant with many beneficial health effects. In this study, a simple and reliable HPLC-UV method was proposed for the quantification of rosmarinic acid (RA) in the aqueous extracts of A. rugosa. RA was selected as a quantification marker due to its easiness in procurement and analysis. The developed method involved chromatographic separation on a $C_{18}$ column ($250{\times}4.6mm$, $5{\mu}m$) at room temperature. The mobile phase consisted of water and acetonitrile both containing 2 % acetic acid and was run at a flow rate of $1mL\;min^{-1}$. The method was validated for specificity, linearity, precision, and accuracy. It was specific to RA and linear in the range of $50-300{\mu}g\;mL^{-1}$ ($r^2=0.9994$). Intra-day, inter-day, and inter-analyst precisions were ${\leq}0.91%\;RSD$, ${\leq}1.40%\;RSD$, and 1.94 % RSD, respectively. Accuracy was 93.3-95.9 % (${\leq}1.21%\;RSD$). The method could be applied to three batches of bulk samples and three batches of lab scale samples, which were found to be $0.64({\pm}0.04)mg\;g^{-1}$ and $0.48({\pm}0.02)mg\;g^{-1}$ for the dried raw materials of A. rugosa. The results show that the proposed method can be used as a readily applicable method for QC of health functional foods containing the aqueous extracts of A. rugosa.

• The Journal of Internal Korean Medicine
• /
• v.21 no.2
• /
• pp.309-318
• /
• 2000

The fruiting bodies of Paecilomyces japonica been used for an anticancer and immuno-stimulating agent as an oriental medicine, Antimutagenecity test with SOS chromotest and antioxidant test with NBT method were carried out using the concentrated culture broth, the extract of mycelia, and that of fruiting bodies. Among the sample extracts tested, the extract of fruiting bodies was most effective to antimutagenecity against the mutagens tested such as MNNG, ethidium bromide(EtBr), 2-aminofluorene(AF) and nitrofluorene(NF). Antimutagenic activity of all the extracts were very effective against mutagen, MNNG. When the extracts were added to certain concentration, antimutagenic activity was enhanced against mutagen, MNNG and NF. Antioxidant activity of the extract from fruiting bodies was highest. However, its activity was very low, compared to ascorbic acid.

• The Journal of Internal Korean Medicine
• /
• v.22 no.2
• /
• pp.215-222
• /
• 2001

Against the mutagen MNNG and NOPD with SOS chromotest, the antigenotoxic activity of MeOH-soluble extract was much more effective than that of the water-soluble one. When the extract was added to the certain concentration, the antigenotoxic acivity was enhanced. Against the mutagen NOPD with Ames test, the antimutagenic activity of MeOH-soluble extract was better than that of the water-soluble one. The 60.4% of the inhibition ratio for the revertant colony-forming unit was shown at 5 mg of MeOH-soluble extract per plate. Antimutagenecity test with SOS chromotest and Ames test were performed using water-soluble and MeOH-soluble extracts from of Gleditsia sinensis. The antioxidant activity of MeOH-soluble extract with the NBT method was higher than that of the water-soluble one.

• Korean Journal of Pharmacognosy
• /
• v.33 no.4 s.131
• /
• pp.364-371
• /
• 2002

Yew (Taxus cuspidata Sibe) selected cultivation as drug, food and decorative plant in Gyong-gi province in Korea. To extract the water soluble active ingredients, as a extracting method, there was extracted with 20g of dried seeds with each 20g of butylene glycol(BG) and propylene glycol(PG), and 40 mL of water mixing 72 hours at $40{\pm}5^{\circ}C$, and then they were filtrated by 400 mesh. Appearance of extract of seeds was pale brown, $pH=4.5{\pm}0.5$, $gravity=1.013{\pm}0.05$, a reflective $index=1.373{\pm}0.05$, and yield=75%. Also, to extract the high purity oil from seeds, it minutely pulverized the dried seeds and added the hexane, mixing 2 hours at $20{\pm}57^{\circ}C$. And then, this filtrated it with 400-mesh. It got the purified oil through evaporating them at $55^{\circ}C$ during under vacuum. As the results, appearance was slightly brown, gravity=0.922 acid value=0.12, saponification value=192, and it should be obtained the $40{\pm}5%$ of yield. As the efficacy evalution of cosmetic field, the antioxidative activities by NBT method were stronger 86.0% from extract of talus seeds than 52.0% from green tea extract and 35.0% from skullcap extract as well as the antioxidative activities by DPPH method were stronger 93.7% from extract of seed than 60.3% from extract of green tea and 27.1% from extract of skullcap. These are more effective than other plant extracts. The collagen synthesis rate on the activating fibroblast for Taxus cuspidata Sibe extract showed 35.43%. As the activity of the skin elasticity, PPE(porcine pancreatic elastase)-inhibitory activities of talus extract was 50.8%. Anti-inflammatory activity was more effective to be taken 41.1% of taxus seed oil than 24.2% of steady glycyrrhetinate (SG) as a control.