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정현주,김예나,최영식,박요한 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.1
Thyroid hemiagenesis is a rare congenital anomaly, in which one thyroid lobe fails to develop. It is reported that thyroid hemiagenesis associated with thyroid diseases such as Graves' disease, Hashimoto's thyroiditis, colloidal goiter and thyroid follicular and papillary cancer. However, Thyroid hemiagenesis associated Hashimoto's thyroiditis haven't reported in Korea. A 31-year-old female patient was clinically hypothyroid with a left-sided goiter. Hemiagenesis of right thyroid lobe indicated on 99mTc pertechnete scan and later confirmed on ultrasonography. The authors report this case with literature review.
마우스 대장암 모델 구축 및 항암제 활성 평가를 위한 예비 연구
김예솔,강봉석,이상은,이은주,이경록,정상헌,박정숙 충남대학교 약학대학 의약품개발연구소 2014 藥學論文集 Vol.29 No.-
Abstract – Aberrant crypt foci (ACF) are early imorphological changes observed in rodents after administration of colon-specific carcinogen such as azoxymethane (AOM). ACF are considered to be putative preneoplastic lesions and are widely used as a surrogate biomarker to rapidly evaluate chemopreventive potential of compounds. The size of colorectal cancer was evaluated after administration of three anticancer drugs, 1 parent drug and 2 prodrugs. The body weights of mice were measured daily and considered as a surrogate for evaluation of general wellbeing. Colons were removed, cut along the longitudinal axis and flushed with phosphate-buffered saline. Each colon was cut into three equal lengths and fixed flat between filter papers. The fixed colon sections were stained with methylene blue. The number of ACF per colon, the number of aberrant crypts observed in each focus and the location of each focus were recorded. After single administration of AOM and multiple doses of anticancer drugs, no significant changes in the body weights of the mice was observed which was recorded for 52 days. However, an expected ACF was not observed in any treated groups. These findings suggest the induction of ACF in mice requires the promotion by dextran sulfate sodium as well as the initiation by AOM.
동아가스터 정(파모티딘 20㎎)에 대한 베스티딘 정의 생물학적동등성
박창훈,정선경,최미희,김호현,이예리,이희주,이경률 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.6
A bioequivalence study of Bestidine™ tablets (Choong Wae Pharma. Corp., Korea) to Dong-A Gaster™ (Dong-A Pharmaceutical Co.. Ltd.. Korea) tablets was conducted according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty four healthy male Korean volunteers received each medicine at the famotidine dose of 40 mg in a 2x2 crossover study. There was a one-week wash out period between the doses. Plasma concentrations of famotidine were monitored by a high-performance liquid chromatography for over a period of 12 hours after the administration. AUCr (the area under the plasma concentration-time curve from time zero to 12 hr) was calculated by the linear trapezoidal rule method. Cma, (maximum plasma drug concentration) and Tma, (time to reach Cma,) were compiled from the plasma concentration-time data. Analysis of variance was carried out using logarithmically transformed AUCr and Cma,. No significant sequence effect was found for all of the bioavailability parameters indicating that the crossover design was properly performed. The 90% confidence intervals of the AUCr ratio and the Cmax ratio for Bestidine™/ Gaster™ were log 0.90-log 1.06 and log 0.98-log 1.20. respectively. These values were within the acceptable bioequivalence intervals of 0.80-1.25. Thus, our study demonstrated the bioequivalence of Bestidine™ and Gaster™ with respect to the rate and extent of absorption.
박석,이예리,김호현,이희주,김윤균,염정록,한상범 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.6
A sensitive method for quantification of pinaverium bromide in human plasma was established using liquid chromatography-electrospray ionization tandem mass spectrometrv(LC-ESI-MS/MS). Glimepiride was used as internal standard. Pinaverium bromide and internal standard in plasma sample were extracted using tert-but}lmethvlether(TBME). A centrifuged upper laver was then evaporated and reconstituted with mobile phase of acetonitrile-5 m1VI ammonium formate (8020. pH 3.0). The reconstituted samples were injected into a C_(18) reversed-phase column. Using MS/MS with multiple reaction monitoring (MRM) mode. pinaverium and glimepirde were detected without severe interference from human plasma matrix. Pinaverium produced a protonated precursor ion ([M+H]^(+)) at m/z 510.3 and a corresponding product ion at m/z 228.9. Internal standard produced a protonated precursor ion ([M+H] ^(+)) at m/z 491.5 and a corresponding product ion at m/z 352.0. Detection of pinaverium bromide in human plasma was accurate and precise. with limit of quantitation at 0.5 ng/ml. The method has been successfully applied to bioavailability study of pinaverium bromide tablet in Korean healthy male volunteers. Pharmacokinetic parameters such as AUCr. C_(max) T_(max). K_(el) and t_(l/2) were calculated.
건일로딘 정(미결정에토돌락 200 ㎎)에 대한 에토돌 정의 생물학적동등성
이정애,이윤영,조태섭,박영준,문병석,김호현,이예리,이희주,이경률 한국약제학회 2004 Journal of Pharmaceutical Investigation Vol.34 No.4
A bioequivalence of Etodol™ tablets (Yuhan corporation) and Kuhnillodine™ tablets (Kuhnil Pharm, Co., Ltd.) was evaluated according to the guideline of Korea Food and Drug Administration (KFDA). Single 200 ㎎ dose of etodolac of each medicine was administered orally to 24 healthy male volunteers. This study was performed in a 2×2 cross-over design. Concentrations of etodolac in human plasma were monitored by a high-performance liquid chromatography. AUCt (the area under the plasma concentration-time curve from time zero to 24 hr) was calculated by the linear trapezoidal rule method. C_(max) (maximum plasma drug concentration) and T_(max) (time to reach C_(max)) were compiled from the plasma concentration-time data. Analysis of variance was performed using logarithmically transformed AUCt and C_(max). No significant sequence effect was found for all of the bioavailability parameters. The 90% confidence intervals of the AUCt ratio and the C_(max) ratio for Etodol™/Kuhnillodine™ were 1.01 - 1.10 and 0.87 - 1.06, respectively. This study demonstrated a bioequivalence of Etodol™ and Kuhnillodine™ with respect to the rate and extent of absorption.
CASE REPORT : A Case of Significant Endobronchial Injury due to Recurrent Iron Pill Aspiration
( Joo Hee Kwak ),( Gun Woo Koo ),( Sung Jun Chung ),( Dong Won Park ),( Hyun Jung Kwak ),( Ji Yong Moon ),( Sang Heon Kim ),( Jang Won Sohn ),( Ho Joo Yoon ),( Dong Ho Shin ),( Sung Soo Park ),( Ju Ye 대한결핵 및 호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
Gastric mucosal damage by iron pills is often reported. However, iron pill aspiration is uncommon. Oxidation of the impacted iron pill causes bronchial mucosal damage that progresses to chronic bronchial inflammation, necrosis, endobronchial stenosis and rarely, perforation. We reported a case of a 92-year-old woman with chronic productive cough and significant left-sided atelectasis. Bronchoscopy revealed substantial luminal narrowing with exudative inflammation of the left main bronchus. Bronchial washing cytology showed necroinflammatory exudate and a small amount of brown material. Mucosal biopsy showed diffuse brown pigments indicative of ferrous pigments, crystal deposition, and marked tissue degeneration. After vigorous coughing, she expectorated dark sediments and her symptoms and radiological abnormalities improved. There are a few such reports worldwide; however, this was the first case reported in Korea. Careful observation of aspiration-prone patients and early detection of iron pill aspiration may prevent iron pill-induced bronchial injury.
NF-κB signaling is key in the wound healing processes of silk fibroin
Park, Ye Ri,Sultan, Md. Tipu,Park, Hyun Jung,Lee, Jung Min,Ju, Hyung Woo,Lee, Ok Joo,Lee, Dong Jin,Kaplan, David L.,Park, Chan Hum Elsevier Science B.V. Amsterdam 2018 ACTA BIOMATERIALIA Vol. No.
<P><B>Abstract</B></P> <P>Silk fibroin (SF) is a well-studied biomaterial for tissue engineering applications including wound healing. However, the signaling mechanisms underlying the impact of SF on this phenomenon have not been determined. In this study, through microarray analysis, regulatory genes of NF-ĸB signaling were activated in SF-treated NIH3T3 cells along with other genes. Immunoblot analysis confirmed the activation of the NF-ĸB signaling pathway as SF induced protein expression levels of IKKα, IKKβ, p65, and the degradation of IκBα. The treatment of NIH3T3 cells with SF also increased the expression of cyclin D1, vimentin, fibronectin, and vascular endothelial growth factor (VEGF). The expression of these factors by SF treatment was abrogated when NF-ĸB was inhibited by a pharmacological inhibitor Bay 11-7082. Knockdown of NF-ĸB using siRNA of IKKα and IKKβ also inhibited the SF-induced wound healing response of the NIH3T3 cells in a wound scratch assay. Collectively, these results indicated that SF-induced wound healing through the canonical NF-κB signaling pathway via regulation of the expression of cyclin D1, vimentin, fibronectin, and VEGF by NIH3T3 cells. Using an <I>in vivo</I> study with a partial-thickness excision wound in rats we demonstrated that SF-induced wound healing via NF-κB regulated proteins including cyclin D1, fibronectin, and VEGF. The <I>in vitro</I> and <I>in vivo</I> data suggested that SF induced wound healing via modulation of NF-ĸB signaling regulated proteins.</P> <P><B>Statement of Significance</B></P> <P>Silk fibroin has been effectively used as a dressing for wound treatment for more than a century. However, mechanistic insight into the basis for wound healing via silk fibroin has not been elucidated. Here we report a key mechanism involved in silk fibroin induced wound healing both <I>in vitro</I> and <I>in vivo.</I> Using genetic- and protein-level analyses, NF-κB signaling was found to regulate silk fibroin-induced wound healing by modulating target proteins. Thus, the NF-κB signaling pathway may be utilized as a therapeutic target during the formulation of silk fibroin-based biomaterials for wound healing and tissue engineering.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>