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Lactobacillus casei AHU 1055 및 Lactobacillus acidophilus JAM 1043의 凍結乾燥와 生存率에 關한 硏究
金昌漢,金明浩,朴芝賢,李明燮,朴相瑨 건국대학교 동물자원연구센터 1992 動物資源硏究誌 Vol.17 No.-
In order to find the most suitable conditions of freeze-drying for the long term preservation of lacto-bacillus casei AHU 1055 and Lactobacillus acidophilus JAM 1043, the growth phase, the cryoprotection medium and inoculum size have been studied. The results obtained in this study are summerized as follows : 1. L. casei AHU 1055 and L.acidophilus JAM 1043 reached to stationary phase after incubating at 37˚C for 16hrs and 12hrs in MRS broth, respectively. 2. The highest viability of each strains was obtained in 11% skim-milk for L. casei AHU 1055 and 9% skim-milk for L. acidophilus JAM 1043 as basic cryoprotection medium. 3. The complex medium contained 11% skim milk powder, 2.5% arginine and 3% glucose was the best suspending midium for freeze-drying of L. casei AHU 1055, and the medium contained 9% skim milk powder, 7% glycerol, 9% lactose, 0.5% arginine was the best suspending medium for freeze-drying of L. acidophilus JAM 1043. 4. The strong positive correlation was found between inoculum size and the survival rate in both strains. 5. When the tested strains were cultured and freeze-dried under the best optimal conditions, the survival rates of freeze- dried L. casei AHU 1055 and L. acidophilus JAM 1043 were 85.8% and 84.0%, respectively.
이정규,전지현,김민정,이규재,김한겸,조현득,채양석 大韓法醫學會 1999 대한법의학회지 Vol.23 No.2
Although it is known that hypothyroidism can cause cardiac dysfunction, it is very hard to find a case report on sudden death due to hypothyroidism. There are only two reported cases on mediline; one is about a 15-year-old girl who died suddenly of Hashimoto's thyroiditis and the other is about a 31-year-old man who also died suddenly of hypothyroidism associated with chronic lymphocytic thyroiditis. Recently we found a young woman who unexpectedly died while she was sleeping. She was diagnosed as hypothyroidism when she went to hospital about a month before she died. At autopsy there were roughly four abnormal findings; Hashimoto's thyroiditis, mild chronic active hepatitis, diverticulosis and accessory spleen. Trace of chlorpheniramine was detected in gastric remains and blood alcohol level was 0.37 percent. To our knowledge, this is the first case reporting sudden and unexpected natural death associated with hypothyroidism in Korea.
Kim Jie Hyun,이준용 한국조직공학과 재생의학회 2020 조직공학과 재생의학 Vol.17 No.3
BACKGROUND: Current in vivo adult stem cell delivery presents limited clinical effects due to poor engraftment and survival. To overcome current challenges in cell delivery and promote surgical cell delivery for soft tissue repair, a multispheroid- loaded thin sectioned acellular dermal matrix (tsADM) carrier which preserves loaded spheroids’ three-dimensional (3D) structure, was developed. METHODS: Adipose-derived stem cells (ASCs) were used for spheroid delivery. After generating spheroids in 3D cell culture dishes, spheroid plasticity and survival in-between coverslips were evaluated. Spheroids were loaded onto tsADM, their shape changes were followed up for 14 days, and then imaged. Spheroid adhesion stability to tsADM against shear stress was also evaluated. Finally, cell delivery efficacy was compared with cell-seeded tsADM by in vivo implantation and histological evaluation. RESULTS: Spheroids withstood cyclic compression stress and maintained their 3D shape without fusion after 48 h of culture in-between coverslips. Cell survival improved when spheroids were cultured on tsADM in-between the coverslips. Spheroid-loaded tsADM with coverslips maintained their spheroid outline for 14 days of culture whereas without coverslips, the group lost their outline due to spreading after 4 days in culture. Spheroids loaded onto tsADMs were more stable after six rather than 3 days in culture. Spheroid-loaded tsADMs showed about a 2.96-fold higher ASCs transplantation efficacy than cell-seeded tsADMs after 2 weeks of in vivo transplantation. CONCLUSION: These results indicate that transplantation of spheroid-loaded tsADMs significantly improved cell delivery. These findings suggest that a combined approach with other cells, drugs, and nanoparticles may improve cell delivery and therapeutic efficacy.
Follow-up outcomes of endoscopic resection for early gastric cancer with undifferentiated histology
Kim, Jie-Hyun,Kim, Yong Hoon,Jung, Da Hyun,Jeon, Han Ho,Lee, Yong Chan,Lee, Hyuk,Lee, Sang Kil,Park, Jun Chul,Shin, Sung Kwan,Youn, Young Hoon,Park, Hyojin Springer-Verlag 2014 Surgical endoscopy Vol.28 No.9