• Journal of Cardiovascular Imaging
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• 제31권2호
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• pp.98-104
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• 2023

BACKGROUND: We aimed to investigate left ventricular (LV) global longitudinal strain (GLS) in end-stage renal disease patients and its change after kidney transplantation (KT). METHODS: We retrospectively reviewed patients who underwent KT between 2007 and 2018 at two tertiary centers. We analyzed 488 patients (median age, 53 years; 58% male) who had obtained echocardiography both before and within 3 years after KT. Conventional echocardiography and LV GLS assessed by two-dimensional speckle-tracking echocardiography were comprehensively analyzed. Patients were classified into three groups according to the absolute value of pre-KT LV GLS (|LV GLS|). We compared longitudinal changes of cardiac structure and function according to pre-KT |LV GLS|. RESULTS: Correlation between pre-KT LV EF and |LV GLS| were statistically significant, but the constant was not high (r = 0.292, p < 0.001). |LV GLS| was widely distributed at corresponding LV EF, especially when the LV EF was > 50%. Patients with severely impaired pre-KT |LV GLS| had significantly larger LV dimension, LV mass index, left atrial volume index, and E/e' and lower LV EF, compared to mildly and moderately reduced pre-KT |LV GLS|. After KT, the LV EF, LV mass index, and |LV GLS| were significantly improved in three groups. Patients with severely impaired pre-KT |LV GLS| showed the most prominent improvement of LV EF and |LV GLS| after KT, compared to other groups. CONCLUSIONS: Improvements in LV structure and function after KT were observed in patients throughout the full spectrum of pre-KT |LV GLS|.

• 한국콘텐츠학회논문지
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• 제19권2호
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• pp.619-628
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• 2019

본 연구는 신장이식 환자를 대상으로 치료지시이행에 미치는 영향을 분석하기 위한 설명적 조사연구이다. 연구대상은 일 대학병원 외래를 방문하는 신장이식 환자 132명이었다. 자료수집은 2017년 7월 17일부터 2017년 8월 22일까지 이루어졌으며, 수집된 자료는 SPSS WIN 24.0을 이용하여 빈도와 백분율, 평균과 표준편차, 분산분석, 상관관계, 회귀분석을 통해 분석되었다. 연구결과, 대상자의 연령, 종교의 유무, 이식 후 경과기간에 따라 치료지시이행에 유의한 차이가 나타났다(p<.05). 또한 총 사회적 지지(r=.54, p<.001), 가족의 지지(r=.43, p<.001), 의료인의 지지(r=.57, p<.001) 및 자가 간호지식(r=.21, p=.015) 역시 치료지시이행과 통계적으로 유의한 양의 상관관계를 보였다. 회귀분석의 결과, 치료지시이행의 영향요인은 의료인의 지지, 신장이식 후 경과기간, 배우자 유무, 종교의 유무였고, 최종 설명력은 41.9%였다. 결론적으로, 신장이식 환자들의 치료지시이행을 높이기 위해 의료인의 지지를 증진시킬 수 있는 효율적인 중재방안이 도입되어야 할 것이다.

• Korean Circulation Journal
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• 제54권6호
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• pp.325-335
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• 2024

Background and Objectives: The number of sensitized heart failure patients on waiting lists for heart transplantation (HTx) is increasing. Using the Korean Organ Transplantation Registry (KOTRY), a nationwide multicenter database, we investigated the prevalence and clinical impact of calculated panel-reactive antibody (cPRA) in patients undergoing HTx. Methods: We retrospectively reviewed 813 patients who underwent HTx between 2014 and 2021. Patients were grouped according to peak PRA level as group A: patients with cPRA ≤10% (n= 492); group B: patients with cPRA >10%, <50% (n=160); group C patients with cPRA ≥50% (n=161). Post-HTx outcomes were freedom from antibody-mediated rejection (AMR), acute cellular rejection, coronary allograft vasculopathy, and all-cause mortality. Results: The median follow-up duration was 44 (19-72) months. Female sex, re-transplantation, and pre-HTx renal replacement therapy were independently associated with an increased risk of sensitization (cPRA ≥50%). Group C patients were more likely to have longer hospital stays and to use anti-thymocyte globulin as an induction agent compared to groups A and B. Significantly more patients in group C had positive flow cytometric crossmatch and had a higher incidence of preformed donor-specific antibody (DSA) compared to groups A and B. During follow-up, group C had a significantly higher rate of AMR, but the overall survival rate was comparable to that of groups A and B. In a subgroup analysis of group C, post-transplant survival was comparable despite higher preformed DSA in a desensitized group compared to the non-desensitized group. Conclusions: Patients with cPRA ≥50% had significantly higher incidence of preformed DSA and lower freedom from AMR, but post-HTx survival rates were similar to those with cPRA <50%. Our findings suggest that sensitized patients can attain comparable post-transplant survival to non-sensitized patients when treated with optimal desensitization treatment and therapeutic intervention.

• Childhood Kidney Diseases
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• 제13권2호
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• pp.130-137
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• 2009

소아 악성종양환아들의 완치를 위한 조혈모세포이식술이 최근 널리 이루어지고 있다. 하지만 높은 치료율과 더불어 이의 부작용 또한 많이 보고되고 있다. 본 연구에서는 소아에서 조혈모세포이식술 이후의 급성 신질환의 임상적인 특성과 결과에 대해 알아보고자 하였다. 1995년 9월부터 2009년 4월까지 영남대학교 부속병원 소아청소년과에서 조혈모세포이식을 시행한 53명의 환자들을 대상으로 하였다. 조혈모세포이식 3개월 후의 사구체여과율을 계산하여 신장의 기능이 25% 이상 감소한 '조기 신기능 감소군'과 25% 미만 감소한 '조기 신기능 비감소군' 두 군으로 나누어 의무기록을 후향적으로 분석하였다. 환아의 원인 질환은 급성 백혈병과 신경모세포종이 각각 23명과 13명으로 가장 많았고, 그 외 뇌종양 및 기타 고형 종양이 6명, 재생불량성 빈혈이 4명, 악성 림프종이 4명, 골수이형성 증후군이 2명, 선천성 면역결핍질환이 1명이었다. 조혈모세포이식 3개월 후 25% 이상의 사구체여과율이 감소한 환아는 18명이었다. '조기 신기능 감소군'과 '조기 신기능 비감소군'은 각각 18명과 35명이었고, 이식세포 공급원은 제대혈(n=11)이 4명과 7명, 골수(n=16)는 8명과 8명, 자가 말초혈액(n=26)은 6명과 20명으로 차이는 없었다. 골수 및 제대혈 이식을 시행한 27명의 환아에서 급성 이식편대숙주반응은 신기능 감소군과 비감소군에서 차이를 보이지 않았다. 모든 환아는 전처치법 중 1가지 이상의 신독성 항암제를 투여받았으며 전신방사선조사 및 항흉선세포글로불린을 포함한 전처치법에 따른 두 군의 차이는 없었다. 사망한 환아는 '조기 신기능 감소군'과 '조기 신기능 비감소군'이 각각 12명과 10명이었고, '조기 신기능 감소군'에서 사망환아의 비율이 더 많았고, 사망의 원인으로는 감염, 급성 신부전, 재발 등이었고 '조기 신기능 비감소군'에 비해서 '조기 신기능 감소군'에서 급성 신부전이 많았다. 하지만 신장기능의 저하정도에 따라서는 사망한 환아는 차이를 보이지 않았다. 이번 연구에서는 소아에서 조혈모세포이식 3개월 후의 조기 신기능 저하는 18명이 있었으며 조혈모세포이식 후 발생하는 합병증 중 하나인 급성 이식편대숙주반응과 관련이 없었으며 이식세포 공급원과도 관련이 없었다. 조기 신기능 저하를 보인 환아에서 사망한 환아가 많았고, 신장기능 저하가 중요한 사망 원인이었다. 생존한 조기 신기능 저하군의 환아는 모두 신기능을 회복하였으며, 이식 12개월 후 후기 신기능 저하는 1명으로 이식의 합병증과는 관련이 없었으나 이후 이식 6년째에 재발로 사망하였다.

• 혜화의학회지
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• 제21권1호
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• pp.11-21
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• 2012

New onset diabetes is a major complication after kidney transplantation. However, the natural course of posttransplantation diabetes mellitus (PTDM) remains unclear. The aim of this study was to demonstrate the detailed natural courses of PTDM according to the onset and persistency of hyperglycemia, and to investigate risk factors for development of different courses of PTDM in renal allograft recipients. The purpose of this study is to develop novel immune suppressants for PTDM using of action mechanism of them. The use of immunosuppressive drugs in transplanted patients is associated with the development of diabetes, possibly due to ${\beta}$-cell toxicity. To better understand the mechanisms leading to post-transplant diabetes, we investigated the actions of prolonged exposure of ${\beta}$-cells to therapeutical levels of tacrolimus (FK506) or cyclosporin A(CsA). The immunosuppressive drug cyclosporine(CsA) is a potent agent widely used after organ transplantations and various autoimmune disorders. After using CsA, some patients suffer severe complications including renal and vascular toxicity. The renal or vascular toxicity is influenced by the degree of the endothelial damage. FK506(tacrolimus) is a widely used immunosuppressive agent in the treatment of various medical conditions, including autoimmune disease, bone marrow and organ transplantations. We found some interesting clusters and confirmed the feasibility of cDNA microarray in the study of Immunosuppressant. In this study, we investigated gene expression patterns induced by Immunosuppressant in RIN-m5F of rat insulinoma cell line. Gene expressions evaluated using cDNA microarry in two clusters were increased or decreased. this study provides comprehensive comparison of the patterns of gene expression changes induced by CsA and FK506 in ${\beta}$-cells. This study could establish that the mode of action mechanism by which currently used insulin inhibitors inducing PTDM could be elucidated at least in part, which raises the possibility that novel immune suppressive PTDM can be developed. The molecular biological study on PTDM will also contribute the progress in diabetes research field as well as in that of PTDM.

• 보험의학회지
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• 제2권1호
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• pp.218-232
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• 1985

Congenital hereditary disease is in devided into Infantile type and Adult type, Adult type is hidden for many years and keeps normal renal function till middle age. Cyst is stimultaneously made in both sides and becomes lowered in renal function in 30's to 40's. Infantile type is generally born with the big kidneys, renal failure, undergrowth of intrahepatic bile duct. Both infantile and childhood type have ureteral dilatation and portal hypertension In infantile type, it is mostly developed into renal failure, but generally faces death as a result of hepatic disease. The reason of death is that an abnormal condition of recessive autosome affects the liver and kidneys. While the incidence of infantile type is rare as $0.017{\sim}0.07%$ and it is autosomal recessive heredity, Adult type can rarely exist in infantile period. Though it exists in middle period, 50% of patients can live for 2-4 years after the first symptom incidence and 25% can less than 2 years. It is hard to cure completely in medicine and surgery. Three difficulties in familial incidence are comparative decrease of the donor who have no affection on renal transplantation. For another consideration it is to show the family history for several generations. We, the Med. Dept. of Dae Han Kyouk Life Insurance Co. Ltd., used the ultrasonic apparatus in diagnosing the one case of adult type bilateral polycystic kidney and then doubted the family history. As a result of inspecting the family we experienced bilateral polycystic kidney from 3 persons out of 4 who can be inspected. The results are as follows: 1) We could confirm the polycystic kidney from 3 persons out of 4(75%). 2) Then when they came for check up, chief complaint was the pain in all 3 cases(100%). 3) Accompanying disease was hypertension in 2 cases(67%). 4) In early disease incidence, we couldn't observe the specific change in pathological opinion. 5) All 3 cases are not accompanied with cystic lesion in liver, spleen, pancreas.

• International Journal of Stem Cells
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• 제16권1호
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• pp.66-77
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• 2023

Background and Objectives: We compared the efficacy and safety of human bone marrow-derived mesenchymal stem cells (hBMSC), delivered at different doses and via different injection routes in an animal model of chronic kidney disease. Methods and Results: A total of ninety 12-week-old rats underwent 5/6 nephrectomy and randomized among nine groups: sham, renal artery control (RA-C), tail vein control (TV-C), renal artery low dose (RA-LD) (0.5×10⁶ cells), renal artery moderate dose (RA-MD) (1.0×10⁶ cells), renal artery high dose (RA-HD) (2.0×10⁶ cells), tail vein low dose (TV-LD) (0.5×10⁶ cells), tail vein moderate dose (TV-MD) (1.0×10⁶ cells), and tail vein high dose (TV-HD) (2.0×10⁶ cells). Renal function and mortality of rats were evaluated after hBMSC injection. Serum blood urea nitrogen was significantly lower in the TV-HD group at 2 weeks (p<0.01), 16 weeks (p<0.05), and 24 weeks (p<0.01) than in the TV-C group, as determined by one-way ANOVA. Serum creatinine was significantly lower in the TV-HD group at 24 weeks (p<0.05). At 8 weeks, creatinine clearance was significantly higher in the TV-MD and TV-HD groups (p<0.01, p<0.05) than in the TV-C group. In the safety evaluation, we observed no significant difference among the groups. Conclusions: Our findings confirm the efficacy and safety of high dose (2×10⁶ cells) injection of hBMSC via the tail vein.

• Journal of Korean Neurosurgical Society
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• 제37권4호
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• pp.296-299
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• 2005

We report a case of primary central nervous system(CNS) lymphoma in an organ recipient. A 33-years-old man who underwent a renal transplantation 3years previously presented with headache and vomiting. In Brain computed tomography scans and magnetic resonance images showed multiple periventricular cystic rim enhancing masses. Pathologic diagnosis by stereotactic biopsy revealed malignant non-Hodgkins B-cell lymphoma. After pathologic confirmation, methotrexate chemotherapy and whole brain radiation therapy were done. Having experienced such a case, the authors strongly recommend to add primary CNS lymphoma as one of the differential diagnoses to brain abscess, metastatic brain tumor and glioblastoma multiforme in cases of multiple ring enhancing periventricular lesions of immunocompromised patient or organ recipient.

• Childhood Kidney Diseases
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• 제1권2호
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• pp.179-182
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• 1997

Cyclosporine is an immunosuppressant usually used to prevent renal transplantation rejection. Nephrotoxicity and hypertension are considered as the most frequent side effects of cyclosporine treatment. The neurotoxic effects of cyclosporine such as agitation, anxiety, delirium, depression and psychosis have recently been found. Methylprednisolone may increase as well plasma concentration of cyclosporine, which leads to side effects. Here we report a $Henoch-Sch\"{o}nlein$ nephritis patient treated with cyclosporine and methylprednisolone who has experienced psychosis including visual and auditory hallucination and convulsion.

• Journal of Endocrine Surgery
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• 제18권4호
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• pp.236-239
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• 2018

Secondary hyperparathyroidism (SHPTH) occurs commonly in patients with end-stage renal disease (ESRD). Uncontrolled SHPTH is associated with complications of calcium deposition including calciphylaxis and elevated rates of cardiovascular morbidity. Current treatment recommendations for medically refractory disease include total parathyroidectomy, often with autotransplantation (TPTH+AT) of minced parathyroid gland. Surgical intervention is associated with a reduction in cardiovascular mortality. We report a case of a 56-year-old man with ESRD who developed SHPTH and underwent TPTH+AT of parathyroid tissue into the right brachioradialis muscle. Over the course of 7 years he developed a mass at the site of the autotransplanted gland as well as recurrent refractory hyperparathyroidism with increased forearm uptake noted on sestamibi scan. After excision of this mass, pathology demonstrated hyperplasia of the minced gland fragments which were embedded within a mass of fibroadipose tissue rather than the muscle tissue it was originally transplanted in.