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Human adipose tissue-derived mesenchymal stem cells inhibit melanoma growth in vitro and in vivo.
Ahn, Jin-Ok,Coh, Ye-Rin,Lee, Hee-Woo,Shin, Il-Seob,Kang, Sung-Keun,Youn, Hwa-Young Potamitis Press 2015 Anticancer research Vol.35 No.1
<P>The effects of adipose tissue-derived mesenchymal stem cells (AT-MSCs) on the growth of human malignancies, including melanoma, are controversial and the underlying mechanisms are not yet-well understood. The aim of the present study was to investigate the in vitro and in vivo anti-tumor effects of human AT-MSCs on human melanoma.</P>
Han, Sei-Myoung,Han, Sang-Hun,Coh, Ye-Rin,Jang, Goo,Chan Ra, Jeong,Kang, Sung-Keun,Lee, Hee-Woo,Youn, Hwa-Young Nature Publishing Group 2014 Experimental and molecular medicine Vol.46 No.6
<P>Mesenchymal stem cells (MSCs) are attractive candidates for clinical repair or regeneration of damaged tissues. Oct4 and Sox2, which are essential transcription factors for pluripotency and self-renewal, are naturally expressed in MSCs at low levels in early passages, and their levels gradually decrease as the passage number increases. Therefore, to improve MSC proliferation and stemness, we introduced human Oct4 and Sox2 for conferring higher expansion and differentiation capabilities. The Oct4-IRES-Sox2 vector was transfected into human adipose tissue MSCs (ATMSCs) by liposomal transfection and used directly. Oct4 and Sox2 were successfully transfected into ATMSCs, and we confirmed maintenance of MSC surface markers without alterations in both red fluorescent protein (RFP) (control) and Oct4/Sox2-ATMSCs. Enhanced proliferative activity of Oct4/Sox2-ATMSCs was shown by WST-1 assay, and this result was further confirmed by cell counting using trypan blue exclusion for a long period. In addition, FACs cell cycle analysis showed that there was a reduction in the fraction of Oct4/Sox2-ATMSCs in G1 with a concomitant increase in the fraction of cells in S, compared with RFP-ATMSCs. Increased levels of cyclin D1 were also seen in Oct4/Sox2-ATMSCs, indicating acceleration in the transition of cells from G1 to S phase. Furthermore, Oct4/Sox2-overexpressing ATMSCs showed higher differentiation abilities for adipocytes or osteoblasts than controls. The markers of adipogenic or osteogenic differentiation were also upregulated by Oct4/Sox2 overexpression. The improvement in cell proliferation and differentiation using Oct4/Sox2 expression in ATMSCs may be a useful method for expanding the population and increasing the stemness of ATMSCs.</P>
Chae, Ji Sang,Ahn, Jin Ok,Coh, Ye Rin,Park, Chong Woo,Youn, Hwa Young The Korean Society of Veterinary Science 2012 大韓獸醫學會誌 Vol.52 No.3
Mosapride stimulated dietary motility was introduced because of the arrhythmogenic effect of cisapride. Cisapride, 5-HT receptor agonist, induces prolongation of QT interval. Additionally, this condition can raise the possibility of acute, "malignant" arrhythmias such as torsade de pointes. It is hard to find any reports about effects of mosapride on cardiac parameters in dogs. By confirming electrocardiogram (ECG) parameters, the surface extremity leads ECG that was obtained from the four-limb electrodes and which was recorded by an ECG recorder after administration of mosapride 3 mg/kg PO b.i.d, and mosapride 3 mg/kg with itraconazole 5 mg/kg PO b.i.d, respectively. QT interval was shortened on the days of 3, 5, and post-day 1 in both mosapride 3 mg/kg administrated group and mosapride with itraconazole group. Heart rate increased significantly. QTc was slightly prolonged in mosapride administration group and mosapride with itraconazole group. However, all dogs of QTc were in normal variation (150~250 msec). Besides, the dogs showed no side effects reported in human medicine during the administration with these drugs. Although mosapride can increase the heart rate, this study suggest that mosapride may be useful for the dogs with disorders of gastrointestinal motility because of no fatal arrhythmogenic effect inspite of administration with itraconazole in dogs.
싸이클로스포린, 케토코나졸, 0.1% 타크로리무스 연고제제로 병용 치료한 군 사역견의 항문주위 누공 3례
서경원 ( Kyoung Won Seo ),안진옥 ( Jin Ok Ahn ),고예린 ( Ye Rin Coh ),박종우 ( Chong Woo Park ),채지상 ( Ji Sang Chae ),황철용 ( Cheol Yong Hwang ),윤화영 ( Hwa Young Youn ) 한국임상수의학회 2010 한국임상수의학회지 Vol.27 No.6
세 마리의 군 사역견이 신체검사와 직장 검사 등을 통해 항문주위 누공으로 진단되었다. 초기 치료는 단기간의 싸이클로스포린과 케토코나졸과 0.1%의 타크로리무스 연고제제로 시작하였다. 병변이 거의 다 치료가 되었을 시점부터 0.1% 타크로리무스 연고제제를 도포 횟수를 줄여서 실시하였다. 세 마리 모두에서 병변은 2-8주 사이에 별다른 부작용을 동반하지 않고 거의 대부분 사라졌으며, 완치는 증례 1, 2, 3에서 각 13, 6, 4주에 이루어졌다. 이 세가지 약물의 병용 프로토콜은 항문낭과도 연결된 항문주위 누공에서도 병변을 해소하는데 효과적이었으며, 특히 초기에 빠른 병변의 해소에 도움이 되어 병변으로부터 발생되는 고통을 경감시켜주는 기간이 늘어나는 것이 강점이라고 할 수 있다. 또한 시간적인 측면 외에도 경제적인 측면에서도 도움이 되므로 개에서 발생하는 항문주위 누공에 효과적인 치료 프로토콜로 유용하게 사용될 수 있을 것으로 사료된다. Three military working dogs (MWDs) were diagnosed with perianal fistulae after a complete physical examination and rectal palpation. The initial treatment protocol was used with short-term oral ciclosporine (CyA) and ketoconazole and 0.1% topical tacrolimus ointment. When lesions were nearly healed, treatment was continued with 0.1% tacrolimus ointment only at a lower frequency. The lesions improved significantly within 2-8 weeks with no noticeable side effects. Complete recovery was determined at weeks 13, 6, and 4 for cases 1, 2, and 3, respectively. This combination protocol was effective at resolving or reducing perianal fistulae (PAF) lesions even communicating with anal sacs in three dogs. The major benefit of this protocol was the rapid reduction of fistulae lesions and this could be helpful to extend the pain-free period. Moreover, this protocol appeared cost-saving as well as time-saving option for PAF dogs.