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Pregnant patient at third trimester with large cerebellar medulloblastoma: a case report
( Yoojin Na ),( Jaeyoung Bae ),( Kicheol Kil ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-
Coexistence of brain tumor and pregnancy can be very challenging. The surgeon has to decide when to remove the tumor under which method of anesthesia in consideration of both the patient and fetal safety. A 29 year old multipara female at 30+6wks gestation had complained of chronic headache that began during previous pregnancy a year ago. The patient received magnetic resonance imaging(MRI) of brain and was diagnosed with cerebellar tumor and associated obstructive hydrocephalus. She undergone external ventricular drain(EVD) insertion and elective Cesarean section at 31+2wks gestation under general anesthesia on the same day. The newborn is relatively doing well and the patient is now awaiting tumor removal surgery under tolerable condition.
( Yoojin Na ),( Arvind M Padma ),( Jae Young Pae ),( Tagrid Jar-allah ),( Mats Brannstrom ),( Mats Hellstrom ),( Min Jong Song ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-
Objective: The present study aimed to develop an ex vivo sheep uterus reperfusion platform that mimics the reperfusion situation so that initial assessments and comparisons can be performed without the need for costly and labor-intensive in vivo transplantation experiments. Methods: Isolated sheep uteri were perfused with the preservation solution IGL-1 and were then exposed to cold ischemia for either 4 (n = 6) or 48 hours (n = 7). Uteri were then reperfused for 48 hours under normothermic conditions with an oxygenated recirculating perfusate containing growth factors and synthetic oxygen carriers. Histological and biochemical analysis of the perfusate was conducted to assess reperfusion injury. Results: Quantification of cell density indicated no significant edema in the myometrium or in the endometrium of uteri exposed to 4 hours cold ischemia and then a normothermic ex vivo reperfusion for 48 hours. Only the outer serosa layer and the inner columnar luminal epithelial cells were affected by the reperfusion. However, a much faster and severe reperfusion damage of all uterine layers were evident during the reperfusion experiment following 48 hours of cold ischemia. This was indicated by major accumulation of extracellular fluid, presence of apoptotic-labeled glandular epithelial layer and vascular endothelium. A significant accumulation of lactate was measured in the perfusate with a subsequent decrease in pH. Conclusion: This model proved to be able to distinguish reperfusion injury-related differences associated to organ preservation. The experimental setup is a platform that can be used to conduct further studies on uterine ischemia- and reperfusion injury that may lead to improved human uterus transplantation protocols.
The development of uterine bio-scaffold using sheep uterus
( Yoojin Na ),( Tom Tristan Tiemann ),( Arvind Manikantan Padma ),( Jae Young Pae ),( Mats Brannstrom ),( Mats Hellstrom ),( Min Jong Song ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-
Objective: The aim of the present study was to establish adequate protocols for scaffold generation and prepare for future in vivo sheep uterus bioengineering experiments. Uterus tissue engineering may dismantle limitations in current uterus transplantation protocols. A uterine biomaterial populated with patient-derived cells could potentially serve as a graft to circumvent complicated surgery of live donors, immunosuppressive medication and rejection episodes. Repeated uterine bioengineering studies on rodents have shown promising results using decellularized scaffolds to restore fertility in a partially impaired uterus and now mandate experiments on larger and more human-like animal models. Methods: Three decellularization protocols were developed using vascular perfusion through the uterine artery of whole sheep uteri obtained from slaughterhouse material. Decellularization solutions used were based on 0.5% sodium dodecyl sulphate (Protocol 1) or 2% sodium deoxycholate (Protocol 2) or with a sequential perfusion of 2% sodium deoxycholate and 1% Triton X-100 (Protocol 3). The scaffolds were examined by histology, extracellular matrix quantification, evaluation of mechanical properties and the ability to support fetal sheep stem cells after recellularization. Results: In all protocols, sheep uteri could successfully be decellularized while maintaining a high integrity of the extracellular components. Uteri perfused with sodium deoxycholate (Protocol 2) were the most favorable treatment in our study based on quantifications. However, all scaffolds supported stem cells for 2 weeks in vitro and showed no cytotoxicity signs. Cells continued to express markers for proliferation and maintained their undifferentiated phenotype. Conclusion: The present study shows three valuable decellularization protocols for future in vivo sheep uterus bioengineering experiments.
나유진(Yoojin Na) 대한지리학회 2012 대한지리학회지 Vol.47 No.6
지명에는 해당 지역과 그 지역주민들의 삶에 관한 정보들이 녹아 있다. 특히, 오래전부터 이어져 온 고지명은 더 많은 공간적 속성들을 포함한다. 본 연구에서는 전통 지명의 하나인 고지명 ‘두모’를 연구대상으로 하여 그 분포와 특성을 고찰하였다. ‘두모’는 Nam(1996)에 의해 연구되기 시작한 지명군으로, 어원적 의미를 살펴본 결과 지명 자체에 산이나 물과 연관된 지형적 입지 조건의 의미를 내포하고 있었다. 그리고 전국에 걸쳐 비교적 균등하게 분포하는 가운데, 85%가 인문지명으로 사용되고 있었고 그중에 73%는 취락명이나 행정구역명 등 취락지명이 차지하고 있었다. 본 연구에서는 두모계 지명의 마을 220개만을 가지고 두모계 취락의 입지와 지명의 확산을 심층 분석하였다. 그 결과, 두모계 취락이 주로 남·동향을 취하고 배산임수의 지형적 조건을 갖추고 있었으며, 마을의 확장에 따라 두모계 지명이 분화되면서 여러 개의 두모계 지명이 함께 분포하고 있음을 확인하였다. Place names represent a lot of information about the region and the life of the local residents. In particular, old geographical names have more spatial informations than recent place names. This paper tried to analyze the distribution and characteristic of ‘Dumo’ which is one of the ancient place names and was studied by Nam youngwoo in 1996 for the first time. After considering the etymology and phonological structure of ‘Dumo’, the name ‘Dumo’ included the geographic conditions related to a mountain and river in itself. The total number of place names in the line of ‘Dumo’ which were collected by the author were 417 and they were distributed evenly on the Korean Peninsula. 85% of them were used for the human place names and 73% of the human place names were served as settlement names standing for a village or an administrative district. Thus the author analyzed the location and diffusion of 220 of settlement names in depth. As a result, villages named in the line of ‘Dumo’ preferred southern or eastern exposure and located in front of a mountain and around a river. After a village name ‘Dumo’ was set up, it produces other similar names in the line of ‘Dumo’ near the village so most place names of ‘Dumo’ were found with several names of ‘Dumo’ not alone.
A Recent Review of the Management of Postmenopausal Symptoms in Breast Cancer Survivors
Chaewon Kim,Yoojin Na,Sanghee Lee,Jung Yoon Park,Youn-Jee Chung,Jaeyen Song,Mee-Ran Kim 대한폐경학회 2023 대한폐경학회지 Vol.29 No.3
The treatment strategy for postmenopausal symptoms resulting from estrogen deficiency in breast cancer survivors receiving endocrine therapy should differ from that in normal women. Several nonhormonal pharmacological therapies can be used to treat vasomotor symptoms. Cognitive-behavioral therapy can help alleviate psychophysiological symptoms, including depression and sleep disorders. Topical vaginal estrogen and moisturizers may aid in treating genitourinary symptoms. Additionally, chronic conditions must be individually managed. Prevention of osteoporosis should always be included in the management, and physicians should be alert to possible cardiovascular risk and cognitive function changes.
Comparison of the Right and Left Femur Bone Mineral Densities in Postmenopausal Women
Sejin Kim,Yoojin Na,Minji Ko,Jung Yoon Park,Hyonjee Yoon,Jae-Yen Song,Youn-Jee Chung,Inhye Shin,Chaewon Kim,Jung Hyun Park,Mee-Ran Kim 대한폐경학회 2023 대한폐경학회지 Vol.29 No.3
Objectives: Bone mineral density (BMD) is measured in the hip and posteroanterior spine; moreover, according to the 2019 International Society for Clinical Densitometry guidelines, unilateral hip can be used. This study aimed to determine whether there is a difference between the BMD of both the femurs in postmenopausal women.Methods: A total of 343 postmenopausal women were enrolled in this study from January 1, 2010, to December 31, 2019 at a single tertiary hospital. By using the Hologic® Horizon W DXA System, the femur and spine BMD was measured; BMD was recorded in g/cm2. Following regions were analyzed in both the femurs: the femur neck, the trochanter area, and total femur.Results: Mean age at imaging was 62 ± 9.7 years, and significant difference in the total BMD of both the femurs (P = 0.003) was observed. In secondary analysis, patients with osteoporosis showed significant contralateral BMD discrepancies in trochanter and total proximal femur BMD (P = 0.041 and P = 0.011, respectively). However, in women with normal BMD, no significant difference between the right and left femur BMD was observed. Furthermore, measurement of solely the unilateral hip can lead to a 16.9% of underdiagnosis in postmenopausal women.Conclusions: In conclusion, it is necessary to check BMD in both hips, particularly in patients suspected of osteoporosis.