• Tuberculosis and Respiratory Diseases
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• 제61권5호
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• pp.440-446
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• 2006

연구배경: 감염증의 발생여부는 장기이식환자의 예후에 중요한 영향을 미친다. 국내와 같이 결핵의 유병률이 높은 지역에서는 장기이식후 기회감염으로 결핵 발병의 위험성이 높을 것으로 추정되나 아직 간 또는 심장이식환자에서의 결핵의 발병률 및 임상양상에 대한 보고가 부족하거나 없다. 방 법: 1992년 1월 부터 2004년 7월까지 서울아산병원에서 간 또는 심장이식을 받은 840명(간이식 730 예, 심장이식 110예)을 대상으로 의무기록을 후향적으로 분석하였다. 결 과: 국내의 한 대학병원에서 간이식 후 결핵의 발생률은 1.5% (추적 $26.6{\pm}19.8$개월), 심장이식은 2.7% (추적 $59.7{\pm}33.3$개월)였다. 이것은 과거 보고된 국내 신장이식 환자들에서의 결핵 유병률보다는 낮은 것으로 추정된다. 폐외결핵이 35% (속립성 결핵 14%)를 차지하여 기존의 보고들과 같이 폐외결핵의 발병률이 높았다. 간이식 환자에서 결핵발병의 위험인자는 단변수 분석에서 이식 후 당뇨, 낮은 이식 전 백혈구 수치, 만성거부반응이었고, HBeAg 양성은 경계수준의 유의성을 보였다. 대부분의 이식환자에서 결핵 예방 치료가 시행되지 않았고, 결핵이 발생한 대다수의 환자는 리팜핀을 포함한 1차 약제로 치료하였고, 항결핵치료와 연관된 급성 거부반응은 2예에서 관찰되었다. 결 론: 국내의 한 대학병원에서 간 또는 심장이식 후 결핵의 발생률은 각각 1.5%, 2.7%로 결핵의 유병률이 낮은 국가에서의 이식 후 결핵 발병률 보다 높았으며 폐외결핵이 많았다.

• 한국콘텐츠학회논문지
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• 제8권10호
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• pp.217-223
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• 2008

성인형 다낭성 간질환(adult polycystic liver disease, PLD)은 양성 질환으로 매우 드물고 상염색체우성 다낭성 신장질환(autosomal dominant polycystic kideny disease, ADPKD)을 동반한다. 다낭성 간질환(PLD)은 간실질에 여러 개의 미만성 낭성질환을 특징으로 하는 상염색체우성 유전성 질환이다. 간과 관련된 중요한 증상 또는 합병증이 발생할 수 있으며 이로 인하여 복강경 또는 간을 절제하거나 또는 절제 없이 천공설치술을 포함하는 치료가 이루어지며 간이식도 할 수 있다. 본 고찰에서는 복부 불쾌감이 있는 성인형 다낭성 간질환을 경험하였기에 초음파 검사와 복부 CT 소견에 대해 참고 문헌과 함께 보고하고자 한다.

• 고신대학교 의과대학 학술지
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• 제33권2호
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• pp.240-244
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• 2018

Knotting of a pulmonary artery catheter (PAC) is a rare, but well-known complication of pulmonary artery (PA) catheterization. We report a case of a double-knotted PAC with a large loop in a patient with hepatocellular carcinoma (HCC) undergoing liver transplantation, which has been rarely reported in the literature. A PAC was advanced under pressure wave form guidance. PAC insertion was repeatedly attempted and the PAC was inserted 80 cm deep even though PAC should be normally inserted 45 to 55 cm deep. However, since no wave change was observed, we began deflating and pulling the balloon. At the 30-cm mark, the PAC could no longer be pulled. Fluoroscopy confirmed knotting of the PAC after surgery (The loop-formed PAC was shown in right internal jugular vein); thus, it was removed. For safe PA catheterization, deep insertion or repeated attempts should be avoided when the catheter cannot be easily inserted into the pulmonary artery. If possible, the insertion of PACs can be performed more safely by monitoring the movement of the catheter under fluoroscopy or transesophageal echocardiography.

• Biomolecules & Therapeutics
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• 제16권2호
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• pp.126-131
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• 2008

Immunosuppressive therapy after organ transplantation is routinely used to prevent rejection of the organ, because this decreases the risk of adverse events, infection, and malignancies. Recently, ursodeoxycholic acid (UDCA), which is isolated from the dried bile of adult Chinese bears, has been shown to reduce the incidence and severity of acute rejection of liver allograft during early phase of liver transplantation. Therefore, in this study, we investigated the effect of UDCA on the proliferation of splenocytes exposed to PMA plus ionomycin. Our results demonstrated that UDCA decreased the splenocytes' proliferation in a dose-dependent manner. The decreased cell proliferation was accompanied with the decreased secretion of cytokines such as IL-2, IFN-${\gamma}$ and TNF-${\alpha}$. In addition, the pretreatment of UDCA on splenocytes stimulated with PMA plus ionomycin decreased the mRNA levels of cytokines (IL-2, IFN-${\gamma}$ and TNF-${\alpha}$) and costimulatory molecules (B7.2 and PD-L1). These results suggest the beneficial effect of UDCA on organ transplantation by decreasing lymphocyte proliferation.

• Korean Journal of Radiology
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• 제23권12호
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• pp.1269-1280
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• 2022

Objective: This study aimed to evaluate the usefulness of quantitative indices obtained from deep learning analysis of gadoxetic acid-enhanced hepatobiliary phase (HBP) MRI and their longitudinal changes in predicting decompensation and death in patients with advanced chronic liver disease (ACLD). Materials and Methods: We included patients who underwent baseline and 1-year follow-up MRI from a prospective cohort that underwent gadoxetic acid-enhanced MRI for hepatocellular carcinoma surveillance between November 2011 and August 2012 at a tertiary medical center. Baseline liver condition was categorized as non-ACLD, compensated ACLD, and decompensated ACLD. The liver-to-spleen signal intensity ratio (LS-SIR) and liver-to-spleen volume ratio (LS-VR) were automatically measured on the HBP images using a deep learning algorithm, and their percentage changes at the 1-year follow-up (ΔLS-SIR and ΔLS-VR) were calculated. The associations of the MRI indices with hepatic decompensation and a composite endpoint of liver-related death or transplantation were evaluated using a competing risk analysis with multivariable Fine and Gray regression models, including baseline parameters alone and both baseline and follow-up parameters. Results: Our study included 280 patients (153 male; mean age ± standard deviation, 57 ± 7.95 years) with non-ACLD, compensated ACLD, and decompensated ACLD in 32, 186, and 62 patients, respectively. Patients were followed for 11-117 months (median, 104 months). In patients with compensated ACLD, baseline LS-SIR (sub-distribution hazard ratio [sHR], 0.81; p = 0.034) and LS-VR (sHR, 0.71; p = 0.01) were independently associated with hepatic decompensation. The ΔLS-VR (sHR, 0.54; p = 0.002) was predictive of hepatic decompensation after adjusting for baseline variables. ΔLS-VR was an independent predictor of liver-related death or transplantation in patients with compensated ACLD (sHR, 0.46; p = 0.026) and decompensated ACLD (sHR, 0.61; p = 0.023). Conclusion: MRI indices automatically derived from the deep learning analysis of gadoxetic acid-enhanced HBP MRI can be used as prognostic markers in patients with ACLD.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제15권2호
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• pp.111-116
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• 2012

Toxic hepatitis is a rare but devastating disease in children. Herbs are widely used in oriental medicine to treat various symptoms in Korea, however, several herbs have been reported to induce liver injury. We report a case of toxic hepatitis induced by Hovenia dulcis in a 3-year-old boy. He complained of nausea, abdominal discomfort, and jaundice. The patient had consumed water boiled with hovenia dulcis for about 1 year prior to presentation. A diagnosis of toxic hepatitis was made based on his history, laboratory data, viral markers, ultrasonography, and biopsied liver tissue. We administered supportive management for acute fulminant hepatitis but his symptoms and liver function progressed. He was transferred to another hospital for further evaluation and consideration for liver transplantation. Because acute liver failure due to herbs or dietary supplement taken for a long time is often fetal, it is important to make early diagnosis and stop taking the drug as soon as drug induced liver injury is suspected.

• Biomolecules & Therapeutics
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• 제30권5호
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• pp.391-398
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• 2022

Polyploidization is a process by which cells are induced to possess more than two sets of chromosomes. Although polyploidization is not frequent in mammals, it is closely associated with development and differentiation of specific tissues and organs. The liver is one of the mammalian organs that displays ploidy dynamics in physiological homeostasis during its development. The ratio of polyploid hepatocytes increases significantly in response to hepatic injury from aging, viral infection, iron overload, surgical resection, or metabolic overload, such as that from non-alcoholic fatty liver diseases (NAFLDs). One of the unique features of NAFLD is the marked heterogeneity of hepatocyte nuclear size, which is strongly associated with an adverse liver-related outcome, such as hepatocellular carcinoma, liver transplantation, and liver-related death. Thus, hepatic polyploidization has been suggested as a potential driver in the progression of NAFLDs that are involved in the control of the multiple pathogenicity of the diseases. However, the importance of polyploidy in diverse pathophysiological contexts remains elusive. Recently, several studies reported successful improvement of symptoms of NAFLDs by reducing pathological polyploidy or by controlling cell cycle progression in animal models, suggesting that better understanding the mechanisms of pathological hepatic polyploidy may provide insights into the treatment of hepatic disorders.

• Journal of Chest Surgery
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• 제49권3호
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• pp.157-164
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• 2016

Background: Heart-lung transplantation (HLT) has provided hope to patients with end-stage lung disease and irreversible heart dysfunction. We reviewed the clinical outcomes of 10 patients who underwent heart-lung transplantation at Asan Medical Center. Methods: Between July 2010 and August 2014, a total of 11 patients underwent HLT at Asan Medical Center. After excluding one patient who underwent concomitant liver transplantation, 10 patients were enrolled in our study. We reviewed the demographics of the donors and the recipients' baseline information, survival rate, cause of death, and postoperative complications. All patients underwent follow-up, with a mean duration of $26.1{\pm}16.7months$. Results: Early death occurred in two patients (20%) due to septic shock. Late death occurred in three patients (38%) due to bronchiolitis obliterans (n=2) and septic shock (n=1), although these patients survived for 22, 28, and 42 months, respectively. The actuarial survival rates at one year, two years, and three years after HLT were 80%, 67%, and 53%, respectively. Conclusion: HLT is a procedure that is rarely performed in Korea, even in medical centers with large heart and lung transplant programs. In order to achieve acceptable clinical outcomes, it is critical to carefully choose the donor and the recipient and to be certain that all aspects of the transplant procedure are planned in advance with the greatest care.

• Journal of Dental Anesthesia and Pain Medicine
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• 제22권6호
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• pp.451-455
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• 2022

Glycogen storage disease (GSD) is a group of inherited disorders, which result in the deficiency of enzymes involved in glycogen metabolism, leading to an accumulation of glycogen in various organs. Deficiency of amylo-1-6-glicosidase (debranching enzyme) causes glycogen storage disease type III (GSD III). The main problems that anesthesiologists face in patients with GSD III include hypoglycemia, muscle weakness, delayed awakening due to abnormal liver function, possible difficulty in airway, and cardiomyopathy. In the face of these difficulties, airway preparation and appropriate glucose monitoring and support during the fasting period are important. The doses of the drugs to be used should be calculated considering the increased volume of distribution and decreased metabolic activity of the liver. We present the case of a child with GSD IIIa who underwent dental prosedation under general anesthesia. She was also being prepared for liver transplantation. This case was additionally complicated by the patient's serious allergic reaction to eggs and milk.

• Asian Pacific Journal of Cancer Prevention
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• 제17권2호
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• pp.473-478
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• 2016

Hepatocellular cancer is a very common cause of cancer related deaths worldwide. Only 30-40% of patients present with early-stage disease open to curative treatments, such as resection or transplantation, while others can only undergo local therapies or palliative care. Various trans-arterial approaches have been used for treatment of hepatocellular carcinoma in patients who need a down-staging to liver transplantation, and who are not candidates for transplantation or radiofrequency ablation. Transarterial chemoembolization (TACE), transarterial embolization (TAE), drug-eluting beads, and radioembolization have been used for locoregional control, and have been shown to prolong the overall survival when compared with supportive care. In this review, we discuss patient selection, pre- and post-procedure imaging, techniques, safety, and clinical outcomes related to these therapies. Newer advances with future directions in various fields related to trans-arterial therapies are also discussed.