1.GAIT-CKD (Gait Analysis using Artificial Intelligence for digital Therapeutics of patients with Chronic Kidney Disease): design and methods
Youngjin SONG ; In cheol JEONG ; Semin RYU ; Sunghan LEE ; Jeonghwan KOH ; Seokjue JEONG ; Seongmin PARK ; Munsang KIM ; Wonjun LEE ; Okhyeon RYE ; Yeojin KIM ; Sanggyu LEE ; Mooeob AHN ; Hyunsuk KIM
Kidney Research and Clinical Practice 2025;44(5):788-801
Digital therapeutics are emerging as treatments for diseases and disabilities. In chronic kidney disease (CKD), gait is a potential biomarker for health status and intervention effectiveness. This study aims to analyze gait characteristics in CKD patients, providing baseline data for digital therapeutics development. Methods: At baseline and after an 8-week intervention, we performed bioimpedance analysis measurements, the Timed Up and Go, Tinetti, and grip strength tests, and gait analysis in 217 healthy individuals and 276 patients with CKD. Demographic and clinical information was collected, including underlying diseases and medications, laboratory tests, and quality of life satisfaction surveys. Gait analysis was performed using skeleton data, which involved acquiring three-dimensional skeleton data of a walker using a single Kinect sensor. The performance of an artificial intelligence-based classification model in distinguishing between healthy individuals and those with CKD was then investigated. Simultaneously, inertia measurement unit analysis was conducted using measurements taken from the wrist and waist. Results: Most subjects received a health intervention via an app, and their gait was assessed for improvements after an 8-week period. Incidents such as falls, fractures, hospitalizations, and deaths will be investigated in years 1 and 3. Conclusion: This study confirmed that the gaits of healthy individuals and CKD patients were different, and the effect of the 8-week app-based health intervention will be analyzed. The study will yield important baseline data for creating digital therapeutics for CKD patients’ diet/exercise in the future.
2.Trajectories of Wok Adjustment and Influencing Factors Among Newly Registered Nurses
Sunghee PARK ; Jin-Hee PARK ; Ju-Eun SONG ; Sun Hyoung BAE ; Kyoungja KIM ; Youngjin LEE
Asian Nursing Research 2024;18(1):36-43
Purpose:
This study explored the work adjustment trajectory and its predictors and characteristics among newly registered nurses.
Methods:
A total of 245 newly registered nurses working in a university hospital provided general baseline characteristics and completed a work adjustment questionnaire along with self-report measures of clinical competency, psychological capital, preceptor exchange, social support, and role conflict when they started working independently (baseline) and at 7 and 12 months after employment. Data were collected from July 2020 to August 2022. The collected data were subjected to a group-based trajectory model, χ2 test, F test, one-way ANOVA, and multiple logistic regression using SAS 9.4, and SPSS 25.0.
Results:
Group-based trajectory modeling classified three newly registered nurse groups: nurses with a high work adjustment level in all subscales from the beginning of employment (early adjustment group, 16.1%), nurses with a moderate level of adjustment from beginning to end (standard adjustment group, 60.6%), and nurses with a low level of work adjustment from early to mid-term, rising later (delayed adjustment group, 23.3%). Higher hope, optimism, and emotional support predicted early and standard adjustments.
Conclusions
Based on the trajectory characteristics, newly registered nurses need to improve their work adjustment. The early and standard adjustment groups should continuously monitor their levels of work adjustment while monitoring their hopes, optimism, and emotional support. In particular, the delayed adjustment group required customized educational programs and strengthened peer support.
3.The Association of Estrogen Receptor Activity, Interferon Signaling, and MHC Class I Expression in Breast Cancer
In Hye SONG ; Young-Ae KIM ; Sun-Hee HEO ; Won Seon BANG ; Hye Seon PARK ; Yeon ho CHOI ; Heejae LEE ; Jeong-Han SEO ; Youngjin CHO ; Sung Wook JUNG ; Hee Jeong KIM ; Sei Hyun AHN ; Hee Jin LEE ; Gyungyub GONG
Cancer Research and Treatment 2022;54(4):1111-1120
Purpose:
The expression of major histocompatibility complex class I (MHC I) has previously been reported to be negatively associated with estrogen receptor (ER) expression. Furthermore, MHC I expression, level of tumor-infiltrating lymphocytes (TILs), and expression of interferon (IFN) mediator MxA are positively associated with one another in human breast cancers. This study aimed to investigate the mechanisms of association of MHC I with ER and IFN signaling.
Materials and Methods:
The human leukocyte antigen (HLA)-ABC protein expression was analyzed in breast cancer cell lines. The expressions of HLA-A and MxA mRNAs were analyzed in MCF-7 cells in Gene Expression Omnibus (GEO) data. ER and HLA-ABC expressions, Ki-67 labeling index and TIL levels in tumor tissue were also analyzed in ER+/ human epidermal growth factor receptor 2 (HER2)- breast cancer patients who randomly received either neoadjuvant chemotherapy or estrogen modulator treatment followed by resection.
Results:
HLA-ABC protein expression was decreased after β-estradiol treatment or hESR-GFP transfection and increased after fulvestrant or IFN-γ treatment in cell lines. In GEO data, HLA-A and MxA expression was increased after ESR1 shRNA transfection. In patients, ER Allred score was significantly lower and the HLA-ABC expression, TIL levels, and Ki-67 were significantly higher in the estrogen modulator treated group than the chemotherapy treated group.
Conclusion
MHC I expression and TIL levels might be affected by ER pathway modulation and IFN treatment. Further studies elucidating the mechanism of MHC I regulation could suggest a way to boost TIL influx in cancer in a clinical setting.
4.Endovascular Treatment of Arterial Steno-Occlusive Lesions in Symptomatic Moyamoya Disease
Jae-Chan RYU ; Yun Hyeok CHOI ; Mi Hyeon KIM ; Eun Ji MOON ; Youngjin KIM ; Boseong KWON ; Yunsun SONG ; Deok Hee LEE
Neurointervention 2022;17(3):161-167
The efficacy and safety of endovascular treatment (EVT) for moyamoya disease (MMD) have rarely been investigated. The objective of this study was to summarize the clinical outcomes of EVT for MMD and determine the potential role of EVT in treating symptomatic steno-occlusive lesions in MMD. Reports from January 2000 to December 2021 describing EVT in MMD were collected through a literature search. The search terms included “moyamoya”, “stent”, “angioplasty”, and “endovascular”. Data regarding baseline demographics, previous medical history, treated vessel, periprocedural complications, and angiographical recurrence were retrieved. This review included 10 studies with details of 19 patients undergoing a total of 31 EVT procedures. Twenty-one EVTs were performed as initial treatments for MMD, and 10 were performed as additional treatments for angiographical recurrence. The mean follow-up period of the initial EVTs was 9.0±11.9 months, with angiographical recurrence in 11 (68.8%) cases. The mean follow-up period of additional EVTs was 4.3±3.9 months, and seven (70.0%) EVTs showed restenosis of the re-treated vessel. Across all initial and additional EVTs, there were no differences in characteristics between the recurrence and non-recurrence groups. Overall, two periprocedural complications (9.5%) occurred, one vessel rupture and one massive intracerebral hemorrhage with subarachnoid hemorrhage. EVT plays a limited role in the management of symptomatic intracranial arterial steno-occlusive lesions of MMD. Recent advances in understanding the pathomechanism of MMD may urge neuro-interventionists to find a new endovascular approach with better balloon angioplasty or stenting mechanisms.
5.Effects of stress, depression, and spousal and familial support on maternal identity in pregnant women
Hye-Jung SEO ; Ju-Eun SONG ; Youngjin LEE ; Jeong-Ah AHN
Korean Journal of Women Health Nursing 2020;26(1):84-92
Purpose:
The objective of this study was to identify the factors influencing maternal identity in pregnant women.
Methods:
Using a descriptive research design, a cross-sectional survey was conducted. In total, 127 pregnant women were recruited from a tertiary hospital in Korea from January to April 2019. Measurements included maternal identity, stress, depression, spousal and familial support, and demographic and obstetric characteristics. Data were analyzed by descriptive statistics, the independent t-test, one-way ANOVA, Pearson correlation coefficients, and stepwise multiple regression using SPSS version 25.0.
Results:
The mean score for maternal identity was 131.15 out of 160, and the mean scores for stress, depression, and spousal and familial support were 14.59 (out of 40), 6.82 (out of 30), and 109.04 (out of 132), respectively. Stress (r=–.38, p<.001), depression (r=–.37, p<.001), and spousal and familial support (r=.37, p<.001) were significantly correlated with maternal identity. In multiple regression analysis, stress (β=–0.27, p=.005) and spousal and familial support (β=0.23, p=.014) were found to be significant factors influencing maternal identity in pregnant women (F=14.17, p<.001).
Conclusion
It is necessary to develop effective strategies to mitigate stress and to encourage spousal and familial support in pregnant women. Such strategies could further enable pregnant women to enhance their maternal identity.
6.Use of cryopreserved cadaveric arterial allograft as a vascular conduit for peripheral arterial graft infection.
Hyojeong KWON ; Hyunwook KWON ; Joon Pio HONG ; Youngjin HAN ; Hojong PARK ; Gi Won SONG ; Tae Won KWON ; Yong Pil CHO
Annals of Surgical Treatment and Research 2015;89(1):51-54
Major peripheral arterial graft infection is a potentially devastating complication of vascular surgery, associated with significant mortality and high amputation rates. Autologous saphenous veins are considered optimal arterial conduits for lower extremity revascularization in infected fields, but they are often unavailable or unsuitable in these patients. This study describes two patients with major peripheral graft infection, but without available autologous veins, who underwent graft excision and cryopreserved cadaveric arterial allograft reconstruction. Although long-term graft durability is unclear because of gradual deterioration and degeneration, these findings suggest that cadaveric allografts may be good options for patients with major peripheral graft infection.
Allografts*
;
Amputation
;
Blood Vessel Prosthesis
;
Cadaver*
;
Humans
;
Lower Extremity
;
Mortality
;
Saphenous Vein
;
Tissue Preservation
;
Transplants*
;
Veins
7.Transient adenosine-induced asystole in the surgical treatment of intracranial aneurysms: A report of two cases.
Ji Yeon KIM ; Yu Mi LEE ; Joung Uk KIM ; Youngjin MOON ; Jun Gol SONG
Anesthesia and Pain Medicine 2012;7(1):55-58
Advances in anesthetic and surgical management, such as deep hypothermic circulatory arrest and temporary clipping, have improved outcomes for intracranial aneurysm patients. However, these techniques are associated with significant risks. We report on two cases in which adenosine administration was used to induce transient periods of cardiac asystole during intracranial aneurysm surgery. This asystole resulted in profound hypotension and collapse of the aneurysm, which facilitated its safe clipping.
Adenosine
;
Aneurysm
;
Circulatory Arrest, Deep Hypothermia Induced
;
Heart Arrest
;
Humans
;
Hypotension
;
Intracranial Aneurysm

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