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고지방식이 비만 유도 mouse에서 누에체액의 항비만 및 LDL-cholesterol 저하효과
남유리(Nam, You Ree),고영은(Ko, Young Eun),이선영(Ly, Sun Yung) 한국영양학회 2018 Journal of Nutrition and Health Vol.51 No.3
본 연구에서는 고지방식이로 유도한 비만 C57BL/6N 마우스 모델에서 누에체액 투여가 마우스의 체중 감소 및 혈중 지질 개선 효과를 보이는지 평가하였다. 실험동물은 정상군 (N), 고지방대조군 (HFC), 누에체액투여군 (HFS-1, HFS-5, HFS-10)으로 분리하여 12주 동안 열량비 10% 지방식이나 45% 지방식을 섭취시키고 고지방식이 급여군들의 일부에 누에체액을 체중 대비 1%, 5%, 10% 경구투여 하였다. 그 결과 체중과 부고환지방 및 총지방의 무게가 유의하게 감소하였으며 혈장 LDL-cholesterol 농도가 고지방대조군 (HFC)군에 비하여 HFS-1, HFS-5, HFS-10군에서 유의하게 감소하였다. 혈중 ALT와 AST의 활성은 고지방대조군에 비하여 HFS-5, HFS-10 군에서 유의하게 저하되었고 누에체액을 투여한 모든 군에서 HFC군과 비교하여 혈장 leptin 수준이 유의하게 감소하였다. 비록 누에체액의 유효성분을 동정하고 그 특성을 규명하기 위해서는 더 많은 연구를 필요로 하지만 본 연구 결과는 누에체액이 비만을 예방할 수 있는 잠재적인 천연소재로서 가능성을 보여준다. Purpose: Obesity, a worldwide epidemic, is associated with insulin resistance, hyperlipidemia, hypertension, cardiovascular disease, and certain cancers. Many strategies, including natural alternative anti-obesity agents, are used widely to prevent obesity. This study examined the effects of silkworm hemolymph on the weight control of C57BL/6N mice fed with a high-fat diet. Methods: The mice were divided into five groups: normal group (N), high-fat diet group (HFC), high-fat diet and silkworm hemolymph (at dose of 1 mL/㎏ BW (HFS-1), 5 mL/㎏ BW (HFS-5) and 10 mL/㎏ (HFS-10) for 12 weeks. Results: After 12 weeks treatment, the administration of silkworm hemolymph decreased the final body weight significantly along with a decrease in the weights of epididymal fat and total fat. The plasma LDL-cholesterol concentration was significantly lower in the HFS-1, HFS-5, and HFS-10 groups than in the HFC group. In addition, the leptin level of the HFS groups was significantly lower than those of the HFC group without a change in the plasma insulin concentration. Conclusion: These findings suggest that the silkworm hemolymph may have the potential to prevent obesity.
암세포 Bcl-2 family 유전자 군의 DNA 메틸화 연구
강영섭 ( Young Suep Kang ),이선영 ( Sun Young Lee ),정상근 ( Sang Gun Jung ),한지유 ( Ji You Han ),고정재 ( Jeong Jae Ko ),배지현 ( Jee Hyeon Bae ),나영정 ( Young Junh Na ),이찬 ( Chan Lee ),목정은 ( Jung Un Mock ),김승조 ( Sung 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.7
목적: 본 연구는 암세포주와 난소암 조직에서 세포예정사의 핵심 조절 단백질인 Bcl-2 family 유전자의 DNA 메틸화 여부를 암과의 관련성을 밝히는데 그 목적이 있다. 연구 방법: 자궁경부암 세포주인 HeLa, CaSki 그리고 만성골수성 혈액암 세포주인 K562 세포에서 genomic DNA를 추출하여 sodium bisulfite를 통한 cytosine 염기를 uracil로 치환하였다. 치환된 염기서열은 methylation과 unmethylation을 특이적으로 확인할 수 있는 primer를 이용하여 MSP (Methylation Specific PCR)을 수행한 후 암세포에서 Bcl-2 family 유전자의 DNA 메틸화 여부를 판별하였다. 결과: 각각의 세포주에서 antiapoptotic Bcl-2 family 유전자 군인 Mcl-1과 Bcl-2 유전자는 DNA 메틸화가 이루어지지 않은 것으로 관찰되었으며, proapoptotic Bcl-2 family 구성원인 Harakiri 유전자는 DNA 메틸화가 이루어진 것을 확인하였다. 반면, 다른 proapoptotic Bcl-2 family 유전자인 Noxa 유전자는 DNA 메틸화가 이루어지지 않은 것으로 관찰되었다. 또한 난소암 조직에서의 DNA 메틸화 여부를 살펴본 결과 Mcl-1과 Noxa는 세포주에서와 같은 결과를 보였고, Harakiri 유전자의 경우 hypomethylation으로 관찰되었다. 결론: 본 연구는 암세포주와 난소암 조직에서 proapoptotic Bcl-2 family 유전자인 Harakiri와 Noxa의 경우, 유전자 특이적인 DNA의 메틸화가 나타났으며 antiapoptotic 유전자는 DNA의 메틸화가 나타나지 않았다. 이로써 Bcl-2 유전자군과 암세포의 세포사멸을 억제하는 기작을 DNA의 메틸화를 통한 특이 유전자 발현 억제에 의해서 이루어질 수 있다고 사료된다. Objective: Promoter methylation of Bcl-2 family genes in cancer cells were studied to verify possible correlation between DNA methylation pattern of Bcl-2 family members and cancer. Methods: The genomic DNAs were extracted from different cancer cell lines, HeLa, CaSki and K562, and ovarian cancer tissue from patients. The cytosine residues were converted to uracil by sodium bisulfite treatment. MSP (methylation specific PCR) was performed to determine the methylation status of Bcl-2, Mcl-1, Noxa, and Harakiri promoters. Using primers that distinguish methylated DNA from unmethylated DNA after bisulfite modification of DNA, MSP was conducted to observe the methylation pattern of Bcl-2 family genes in different cancer cells. Results: The promoter regions of Bcl-2 family genes including Mcl-1, Bcl-2, and Noxa were not methylated in cancer cells, whereas the proapoptotic Bcl-2 family gene Harakiri was detected as methylated in the cancer cell lines and hypomethylated in the ovarian cancer tissue. Conclusion: The present study demonstrated the differential methylation profiles of Bcl-2 family genes in cancerous cells, which suggests a possible connection between the methylation pattern of some of Bcl-2 family genes and ovarian cancer.
자가혈청하에서 FGF-2와 덱사메타손에 의한 골수중간엽줄기세포의 증식과 분화에 대한 효과
손민정 ( Min Jung Shon ),이선영 ( Sun Young Lee ),김태호 ( Tae Ho Kim ),유창국 ( Chang Kook You ),김석영 ( Suk Young Kim ),정필훈 ( Phil Hoon Choung ),손영숙 ( Young Sook Son ),박의균 ( Eui Kyun Park ),김신윤 ( Shin Yoon Kim ) 한국조직공학과 재생의학회 2005 조직공학과 재생의학 Vol.2 No.4
Previously we have shown that heat-inactivated autologous serum (HAS) has a potential to stimulate proliferation and ostoblastic differentiation of bone marrow stromal cells (BMSCs). In the present study we investigated whether stimulatory effects of HAS on proliferation and osteoblastic differentiation of BMSCs are further potentiated by fibroblast growth factor-2 (FGF-2) and dexamethasone (Dex). As expected, FGF-2 and Dex stimulated proliferation of BMSCs up to 17% at 5 days and 26% at 7 days of culture compared to HAS control. These results suggest that FGF-2 and Dex in the presence of HAS further stimulate proliferation of BMSCs. In order to examine whether BMSCs expanded with FGF-2, Dex and HAS harbor multipotency, the expanded cells were stimulated with either osteogenic or adipogenic cocktails. BMSCs expanded with FGF-2, Dex and HAS for 7 days were able to be differentiated into either osteoblasts or adipocytes. Taken together, these results demonstrate that FGF-2 and Dex in combination with HAS further stimulates proliferation of BMSCs and these expanded cells maintain potentials to be differentiated into either osteoblasts or adipocytes.
두경부암 환자에서 방사선치료 중 고농축 고단백 균형 영양식의 영양보충효과
오영택(Young-Taek Oh),김수희(Soo-Hee Kim),김철호(Chul-Ho Kim),이선영(Sun-Young Lee),장현수(Hyun-Soo Jang),조선미(Sun-Mi Cho),최유영(You-Young Choi),최원선(Won-Sun Choi),윤숭섭(Sung-Seob Yun) 대한두경부종양학회 2008 대한두경부 종양학회지 Vol.24 No.2
Objectives :Weight loss and malnutrition in patients undergoing radiotherapy for head and neck cancer are usual and preventable. The effect of nutritional support with oral high protein liquid was evaluated. Material and Methods :From Feb. to Dec. 2007, twenty patients received nutritional supplement with oral high protein liquid during radiotherapy for head and neck cancer and the nutritional status was evaluated. Weight loss was compared with control group of similar clinical characteristics. Results :Nutritional parameters such as weight, arm circumference, hemoglobin, hematocrit, total protein, albumin, transferring and the number of lymphocyte were relatively well maintained in patients with nutritional support with oral high protein liquid. In addition weight loss was minimal and significantly lower compared with control group. Conclusion :Nutritional support with oral high protein liquid was effective on maintaining nutritional status for the patients with head and neck cancer during radiotherapy.