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( Jim Yung Park ),( Yeon Joo Lee ),( Jin Woo Lee ),( Sung Soo Park ),( Young Jae Cho ),( Sang Min Lee ),( Young Whan Kim ),( Sung Koo Han ),( Chul Gyu Yoo ) 대한결핵 및 호흡기학회 2014 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.118 No.-
Background: ARDS is a clinical syndrome and has heterogeneous etiologies. Accurate diagnosis of specific etiology can lead to application of effective treatment. This study investigates clinical efficacy and safety of surgical lung biopsy in patients with ARDS. Methods: Patients with ARDS by Berlin definition and mechanical ventilatory support in ICU who underwent surgical lung biopsy in 3 hospitals from 2004 to 2013 were analyzed in retrospective cohort study. Data analyzed included baseline characteristics, pathologic diagnosis, treatment change, in-hospital mortality, and complication rate. Results: Total 84 patients with ARDS were enrolled in this study. Mean age was 58±16 years with PaO2/FiO2 of 132.1±54.5 mmHg. Diagnostic yield was 88.1%. Diffuse alveolar damage (DAD) was found in 31 patients (36.9%). The most common pathologic diagnoses other than DAD were infections. Biopsy finding led to treatment alteration in 48 patients (57.1%), however it did not result in significant survival benefit. The mortality in patients with DAD was not different from that in patients without DAD. Most of the postprocedural complications were mild, which occurred in 18 patients (21.4%) and there was no procedure related mortality. Conclusions: Surgical biopsy in ARDS has high diagnostic yield and its result can lead to clinically important treatment alteration with acceptable complication rate.
( Jim Yung Park ),( Yeon Joo Lee ),( Jin Woo Lee ),( Sung Soo Park ),( Young Jae Cho ),( Sang Min Lee ),( Young Whan Kim ),( Sung Koo Han ),( Chul Gyu Yoo ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: ARDS is a clinical syndrome and has heterogeneous etiologies. Accurate diagnosis of specifi c etiology can lead to application of effective treatment. This study investigates clinical effi cacy and safety of surgical lung biopsy in patients with ARDS. Methods: Patients with ARDS by Berlin defi nition and mechanical ventilatory support in ICU who underwent surgical lung biopsy in 3 hospitals from 2004 to 2013 were analyzed in retrospective cohort study. Data analyzed included baseline characteristics, pathologic diagnosis, treatment change, in-hospital mortality, and complication rate. Results: Total 84 patients with ARDS were enrolled in this study. Mean age was 58±16 years with PaO2/fiO2 of 132.1±54.5 mmHg. Diagnostic yield was 88.1%. Diffuse alveolar damage (DAD) was found in 31 patients (36.9%). The most common pathologic diagnoses other than DAD were infections. Biopsy fi nding led to treatment alteration in 48 patients (57.1%), however it did not result in significant survival benefi t. The mortality in patients with DAD was not different from that in patients without DAD. Most of the postprocedural complications were mild, which occurred in 18 patients (21.4%) and there was no procedure related mortality. Conclusions: Surgical biopsy in ARDS has high diagnostic yield and its result can lead to clinically important treatment alteration with acceptable complication rate.
The extract of natural plant promotes the proliferation of murine spermatogonial stem cells
Hye-Ryeon Kang,Yong-Hee Kim,Dong-Gu Lee,Ki-Jung Kim,Polash Chandra Karmakar,Hyun-Gu Kang,Sang-Eun Jung,Myeong-Geun Oh,Yeon-Jim Cho,Yu-Ri Choi,Chan Kyu Han,Sanghyung Lee,Buom-Yong Ryu 한국발생생물학회 2015 한국발생생물학회 학술발표대회 Vol.2015 No.9
The aim of this study was to enhance the proliferation efficiency of spermatogonial stem cells (SSCs). In order to improve the proliferation efficiency, we investigated new factors that promote the proliferation of SSCs using in vitro culture method with natural plant extracts. Germ cell populations containing SSCs were collected 6- to 8-days-old from C57BL/6-TG-EGFP (C57GFP) mice and SSCs were isolated from the collected cells via magnetic-activated cell sorting (MACS). Since then, SSCs were cultured for a week with culture medium containing natural plant extracts at concentration of 0.1, 1, and 10 μg/mL. After a week of culture, we looked for an increase, especially a dose-dependent increase, in the number of cells compared to that of the control group. A dose-dependent increase, in the number of cells was observed in the Petasides japonicus-treated groups. Furthermore, we carried out repeated experiment that is process consisting of selection and additional segmentation to explore new factors for activating SSCs at the molecular level. As a results, Petasides japonicus butanol fraction significantly increased the proliferation rate of SSCs in a dose-dependent manner among Petasides japonicus fraction samples. We identified normal expression level of PLZF in SSCs cultured with plant extracts using immunocytochemistry method. Furthermore, we also carried out qRT-PCR and identified normal expression level of Lhx1 and GFRα1. The finding of this study could contribute to improvement of proliferation and activation for SSCs, using culture method with natural plant extracts.