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Kim JY, Hong SK, Kim J, Choi HH, Lee J, Hong SY, Lee JM, Choi Y, Yi NJ, Lee KW, Suh KS. Risk factors for incisional hernia after liver transplantation in the era of mammalian target of rapamycin inhibitors use: a retrospective study of living donor liver transplantation dominant center in Korea. Ann Surg Treat Res 2024; 106:115-123. [PMID: 38318092 PMCID: PMC10838656 DOI: 10.4174/astr.2024.106.2.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/31/2023] [Accepted: 11/26/2023] [Indexed: 02/07/2024] Open
Abstract
Purpose Incisional hernia (IH) is a common complication after liver transplantation (LT) with an incidence rate of 5% to 46%. This retrospective study aimed to evaluate the risk factors for IH development after LT in the era of mammalian target of rapamycin (mTOR) inhibitors use. Methods Data on patients who underwent LT between 2015 and 2021 were retrospectively reviewed. The patients were divided into 2 groups (IH group and non-IH group) according to the postoperative occurrence of IH. Results We analyzed data from 878 patients during the study period, with 28 patients (3.2%) developing IH. According to multivariate analysis, body mass index exceeding 25 kg/m2 and the use of mTOR inhibitors within the first month after LT were the sole significant factors for both IH occurrence and the subsequent need for repair operations. Notably, a history of wound complications, a Model for End-stage Liver Disease score, and the timing of LT-whether conducted during regular hours or at night-did not emerge as significant risk factors for IH after LT. Conclusion Our study reveals a higher incidence of IH among obese patients following LT, often requiring surgical repair, particularly in cases involving mTOR inhibitor usage within the initial month after LT. Consequently, it is crucial to exercise increased vigilance, especially in obese patients, and exercise caution when considering early mTOR inhibitor administration after LT.
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Affiliation(s)
- Jae-Yoon Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jiyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jaewon Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Moon JJ, Hong SK, Kim YC, Hong SY, choi Y, Yi NJ, Lee KW, Han SS, Lee H, Kim DK, Kim YS, Yang SH, Suh KS. Soluble suppression of tumorigenicity 2 is a potential predictor of post-liver transplant renal outcomes. PLoS One 2023; 18:e0293844. [PMID: 37917773 PMCID: PMC10621951 DOI: 10.1371/journal.pone.0293844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/18/2023] [Indexed: 11/04/2023] Open
Abstract
Acute kidney injury is considered an independent prognostic factor for mortality in patients with liver cirrhosis. Non-treated acute kidney injury can progress to hepatorenal syndrome with a poor prognosis. As suppression of tumorigenicity 2 (ST2) is a member of the interleukin-1 receptor family that aggravates inflammation and fibrotic changes in multiple organs, we measured soluble ST2 (sST2) level in the serum and urine of liver-transplant recipients at the time of transplantation. The serum sST2 level significantly increased in liver-transplant recipients with suppressed kidney function compared with that in recipients with normal function. In recipients with severely decreased liver function (model for end-stage liver disease score ≥ 30), the serum sST2 level was higher than that in recipients with preserved liver function (model for end-stage liver disease score ≤ 20, P = 0.028). The serum sST2 level in recipients with hepatorenal syndrome was higher than that in liver-transplant recipients without hepatorenal syndrome (P = 0.003). The serum sST2 level in patients with hepatorenal syndrome was higher than that in recipients without a history of acute kidney injury (P = 0.004). Recipients with hepatorenal syndrome and recovered kidney function showed higher sST2 levels than those who did not recover (P = 0.034). Collectively, an increase in the serum sST2 level reflects a decrease in both kidney and liver functions. Thus, measuring sST2 level at the time of liver transplantation can help predict renal outcomes.
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Affiliation(s)
- Jong Joo Moon
- Seoul National University Biomedical Research Institute, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Yong Chul Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Seok Han
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Hajeong Lee
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Dong Ki Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Kidney Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Yon Su Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Kidney Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Seung Hee Yang
- Seoul National University Biomedical Research Institute, Seoul, Korea
- Kidney Research Institute, Seoul National University Medical Research Center, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Kim JY, Chang S, Kim J, Choi HH, Lee J, Hong SY, Lee JM, Hong SK, Choi Y, Yi NJ, Lee KW, Suh KS. Evaluation of the efficacy and safety of conversion from the tacrolimus capsule to tablet in stable liver transplant recipients with maintenance therapy: a 24-week, open-label, single-center, phase IV exploratory clinical study. Ann Surg Treat Res 2023; 105:228-236. [PMID: 37908382 PMCID: PMC10613821 DOI: 10.4174/astr.2023.105.4.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/19/2023] [Accepted: 08/17/2023] [Indexed: 11/02/2023] Open
Abstract
Purpose The tablet form of tacrolimus is more convenient for drug ingestion than the capsule form. We examined the efficacy and safety of tacrolimus tablets and a satisfaction survey after formula conversion in liver transplant (LT) recipients. Methods This study was an open-label, prospective clinical trial for tacrolimus formula 1:1 conversion from capsule to tablet in 41 adult LT recipients with tacrolimus maintenance therapy of more than 1 month. The primary endpoint was incidence of biopsy-proven acute rejection (BPAR) within 24 weeks. Surveys 1 week before and 4 weeks after formula conversion were conducted for total daily dose of medication, number, scale of discomfort and satisfaction. Results The overall incidence of BPAR was 0% and there was no graft loss or patient death. The incidence of adverse effects was 34.1% (n = 14) after formula conversion. The most common severe adverse effect was abnormal liver function test (n = 5): biliary complications (n = 4) and alcoholic recidivism (n = 1). Total daily dose and number of tacrolimus doses were significantly lower after formula conversion (P < 0.05) without changes in trough level. According to survey analysis, there was no significant difference in discomfort and satisfaction scales from capsule to tablet conversion (P < 0.05). Conclusion The present study suggests that the new tablet formula can be a useful treatment option to maintain a consistent level of tacrolimus with a lower total daily dose and number in adult LT recipients.
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Affiliation(s)
- Jae-Yoon Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sukyoung Chang
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jiyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jaewon Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Hong SK, Lee KW, Kim JY, Lee J, Kim J, Choi HH, Hong SY, Lee JM, Choi Y, Yi NJ, Suh KS. Factors associated with rituximab-mediated B cell depletion in ABO-incompatible adult living donor liver transplantation. Korean J Transplant 2023; 37:170-178. [PMID: 37694598 PMCID: PMC10583967 DOI: 10.4285/kjt.23.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/06/2023] [Accepted: 07/13/2023] [Indexed: 09/12/2023] Open
Abstract
Background Pretransplant therapies such as rituximab and plasmapheresis have led to an increase in ABO-incompatible (ABOi) living donor liver transplantation (LDLT), thus helping to overcome organ shortages. This study evaluated the changes in anti-A/B titers and CD19 levels over time in patients undergoing ABOi LT and aimed to understand the effect of single-nucleotide polymorphisms (SNPs) in Fc gamma receptor (FcγR) on rituximab therapy. Methods Two SNPs of FCGR2A (131H/R) and FCGR3A (158F/V) were identified. The clinical data on 44 patients who underwent ABOi LDLT between May 2019 and October 2021 at Seoul National University Hospital were reviewed retrospectively. Results Following desensitization with rituximab and subsequent LDLT, the anti-A/B titer recovered within 1 week, but decreased thereafter. The CD19 level increased at 3 months after LT. The genotyping data for FCGR3A (158F/V) indicated that two patients had the V/V genotype, and 42 had the F/V genotype. In the genotyping data for FCGR2A (131H/R), 21 patients had the H/H genotype, three had the R/R genotype, and 20 had the H/R genotype. However, there were no significant differences in anti-A/B and CD19 levels, bacteremia rates, T cell-mediated rejection, antibody-mediated rejection, or the survival rate among the FCGR2A types. Conclusions There were significant changes in the anti-A/B titers and CD19 levels over time in each patient after ABOi LDLT. The difference in outcomes following LT according to the FcγR SNP type for rituximab was unclear. Further studies with larger sample sizes are needed to confirm the effect of FcγR SNPs on rituximab therapy.
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Affiliation(s)
- Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jae-Yoon Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jaewon Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jiyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Lee J, Yi NJ, Kim JY, Choi HH, Kim J, Lee S, Hong SY, Jin US, Yang SM, Lee JM, Hong SK, Choi Y, Lee KW, Suh KS. Portal vein reconstruction in pediatric liver transplantation using end-to-side jump graft: A case report. Ann Hepatobiliary Pancreat Surg 2023; 27:313-316. [PMID: 37066755 PMCID: PMC10472120 DOI: 10.14701/ahbps.22-125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 01/25/2023] [Accepted: 02/14/2023] [Indexed: 04/18/2023] Open
Abstract
Attenuated portal vein (PV) flow is challenging in pediatric liver transplantation (LT) because it is unsuitable for classic end-to-end jump graft reconstruction from a small superior mesenteric vein (SMV). We thus introduce a novel technique of an end-to-side jump graft from SMV during pediatric LT using an adult partial liver graft. We successfully performed two cases of end-to-side retropancreatic jump graft using an iliac vein graft for PV reconstruction. One patient was a 2-year-old boy with hepatoblastoma and a Yerdel grade 3 PV thrombosis who underwent split LT. Another patient was an 8-month-old girl who had biliary atresia and PV hypoplasia with stenosis on the confluence level of the SMV; she underwent retransplantation because of graft failure related to PV thrombosis. After native PV was resected at the SMV confluence level, an end-to-side reconstruction was done from the proximal SMV to an interposition iliac vein. The interposition vein graft through posterior to the pancreas was obliquely anastomosed to the graft PV. There was no PV related complication during the follow-up period. Using a jump vascular graft in an end-to-side manner to connect the small native SMV and the large graft PV is a feasible treatment option in pediatric recipients with inadequate portal flow due to thrombosis or hypoplasia of the PV.
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Affiliation(s)
- Jaewon Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jae-Yoon Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jiyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sola Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Ung Sik Jin
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Mi Yang
- Department of Anesthesiology and Pain Medicine, Seoul National University Children’s Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Kim J, Hong SK, Kim JY, Lee J, Choi HH, Lee S, Hong SY, Lee JM, Choi Y, Yi NJ, Lee KW, Suh KS. Recurrence in patients with totally necrotic nodules of hepatocellular carcinoma after liver transplantation: "totally" an inaccurate description. Ann Surg Treat Res 2023; 105:47-56. [PMID: 37441322 PMCID: PMC10333804 DOI: 10.4174/astr.2023.105.1.47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/04/2023] [Accepted: 06/08/2023] [Indexed: 07/15/2023] Open
Abstract
Purpose Total necrosis of hepatocellular carcinoma (HCC) achieved via locoregional treatment (LRT) is considered to indicate a lack of tumor viability. Nonetheless, there is insufficient evidence of recurrence after liver transplantation (LT) in patients with such a status. The aim of this study was to investigate the prognosis of patients diagnosed with totally necrotic nodules upon explant hepatectomy after LT. Methods We conducted a retrospective study of patients diagnosed with totally necrotic nodules after LT for HCC. A total of 165 patients with HCC who underwent living- or deceased-donor LT from 2000 to 2020 in our hospital were included. Results A total of 5 patients (3.0%) exhibited HCC recurrence during a median follow-up of 84 months (range, 4-243 months) after LT. The 5-year overall and recurrence-free survival rates of these patients were 92.8% and 92.2%, respectively. Four patients in the HCC-recurrence group (80.0%) died even after further treatment, including transarterial chemoembolization, surgery, and systemic treatment. Both univariate and multivariate analyses of clinicopathological factors identified a maximum diameter of the totally necrotic nodules of >5 cm as the only factor associated with tumor recurrence following LT (P = 0.005 and P = 0.009, respectively). Conclusion Total necrosis of HCC via LRT yielded excellent survival outcomes for patients undergoing LT. Nevertheless, patients with large tumors should be considered at high risk of recurrence after LT, suggesting the need for their active surveillance during the follow-up period.
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Affiliation(s)
- Jiyoung Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jae-Yoon Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jaewon Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sola Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Choi J, Choi EW, Choi Y, Hong SY, Suh S, Hong K, Han ES, Lee JM, Hong SK, Yi NJ, Lee KW, Suh KS. Modified Charlson comorbidity index as a survival prediction tool for older patients after liver transplantation. Ann Surg Treat Res 2023; 104:358-363. [PMID: 37337600 PMCID: PMC10277175 DOI: 10.4174/astr.2023.104.6.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/21/2023] Open
Abstract
Purpose An increasing number of older patients now undergo liver transplantation (LT). Although the overall outcomes in older patients are not different from those of younger patients, there is no tool to predict LT prognosis in older patients. We hypothesized that a modified Charlson comorbidity index (mCCI) and 5-factor modified frailty index (mFI-5) can predict outcomes in older patients after LT. Methods This retrospective study included 155 patients (aged >65 years) who underwent LT at Seoul National University Hospital. The recipients were subcategorized into 2 groups based on the mCCI score and mFI-5: the low (0-1) and high (2-5) mCCI groups, and low (≤0.4) and high (>0.4) mFI-5 groups. The independent effect of each variable on post-LT survival was determined using the mCCI subgroup, age at transplantation, sex, Child-Turcotte-Pugh score, model for end-stage liver disease (MELD) score, and mFI-5 subgroup. Results The high-mCCI group (41 patients) showed significantly lower 1- and 3-month and 1-, 3-, and 5-year survival than the low-mCCI group. Using the Cox regression model, the mCCI, sex, and MELD score remained significant. The mFI-5 was not a significant factor to predict patients' survival. Conclusion The mCCI and MELD scores could be used to predict post-LT survival in older patients.
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Affiliation(s)
- Jiho Choi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Eun-Woo Choi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kwangpyo Hong
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-moo Lee
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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8
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Gang S, Choi Y, Lee B, Yoon KC, Hong SY, Suh S, Han ES, Hong SK, Lee HW, Cho JY, Yi NJ, Lee KW, Suh KS. Long-term outcomes of liver transplantation using grafts from donors with active hepatitis B virus replication: a multicenter cohort study. Ann Surg Treat Res 2023; 104:183-194. [PMID: 37051154 PMCID: PMC10083344 DOI: 10.4174/astr.2023.104.4.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 04/07/2023] Open
Abstract
Purpose Liver grafts from donors with HBV infection contributed to expanding the donor pool under the hepatitis B immunoglobulin and antiviral agents (nucleos(t)ide analogues) in the HBV-endemic area. We report long-term outcomes of liver transplantations (LTs) using grafts from donors with active or chronic HBV infection. Methods Overall, 2,260 LTs performed in 3 major hospitals in Seoul from January 2000 to April 2019 were assessed for inclusion. Twenty-six grafts (1.2%) were obtained from HBsAg (+), HBeAb (+), or HBcAb (+) donors, and recipient outcomes were retrospectively reviewed. Donor and recipient demographics and transplantation outcomes were analyzed. Results Sixteen deceased donor LTs were performed using active HBsAg (+) grafts. Ten other LTs were sourced from 10 living donors. There was no significant difference in survival in patients who received deceased donor LTs compared with that in those who underwent LT with non-hepatitis virus-infected grafts. Fourteen patients who were followed up for >5 years were stable, and no difference in hepatocellular carcinoma recurrence rate was observed 5 years after transplantation between transplants from donors with and those without HBV. Conclusion Considering long-term outcomes, liver grafts from donors with active HBV replication can be safely used for LT.
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Affiliation(s)
- Sujin Gang
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Boram Lee
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Kyung Chul Yoon
- Department of Surgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hae Won Lee
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Jai Young Cho
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Nam-joon Yi
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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Seo J, Hong SK, Lee S, Hong SY, Choi Y, Yi NJ, Lee KW, Suh KS. Pure Laparoscopic Versus Open Right Hepatectomy in Living Liver Donors: Graft Weight Discrepancy. Ann Transplant 2022; 27:e938274. [PMID: 36457203 PMCID: PMC9724455 DOI: 10.12659/aot.938274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/04/2022] [Indexed: 08/30/2023] Open
Abstract
BACKGROUND Accurate volumetric evaluation of donors' livers before surgery is crucial for successful living-donor liver transplantation. However, there are few studies on the volumetric evaluation in the recently popularized pure laparoscopic donor hepatectomy method, in contrast to the number of studies for conventional donor hepatectomy. We aimed to analyze the difference between estimated graft weight and actual graft weight in pure laparoscopic donor right hepatectomy (PLDRH) and conventional donor right hepatectomy (CDRH) procedures. MATERIAL AND METHODS The medical records of 612 donors who underwent right hepatectomy in living-donor liver transplantation between January 2014 and December 2020 were retrospectively reviewed. The CDRH group targeted patients from January 2014 to October 2015, and the PLDRH group targeted patients from March 2016 to December 2020. RESULTS There were 119 and 376 donors who underwent CDRH and PLDRH, respectively. Although there was no significant difference in the estimated graft weights (P=0.994) and actual graft weights (P=0.489) between the groups, the estimated graft weights were significantly higher than the actual graft weights in both groups. However, the estimated graft weight and actual graft weight showed linear correlations in both the CDRH (r=0.81, P<0.001) and PLDRH (r=0.76, P<0.001) groups, with the CDRH group having greater linearity. CONCLUSIONS The estimates of graft weight were similar between the 2 groups. However, since the actual graft weight tended to be smaller in the PLDRH group, this should be considered before surgery.
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Gang S, Choi Y, Lee S, Hong SY, Suh S, Han ES, Hong SK, Yi NJ, Lee KW, Suh KS. Progression of a persisting mesenchymal hamartoma to intrahepatic cholangiocarcinoma 24 years after the initial diagnosis: A case report. Ann Hepatobiliary Pancreat Surg 2022; 26:407-411. [PMID: 35995570 PMCID: PMC9721246 DOI: 10.14701/ahbps.22-022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/13/2022] [Accepted: 05/18/2022] [Indexed: 12/15/2022] Open
Abstract
Mesenchymal hamartoma of the liver (MHL) is a rare benign tumor that often presents in early childhood, and it rarely occurs in adulthood. Aberrant development of the portal tract is a known cause of MHL. Although limited information is available on the natural course of MHL, malignant transformation has been reported in a few cases. Here, we report a case of a 26-year-old female with intrahepatic cholangiocarcinoma secondary to unresected MHL. The patient underwent resection of the hepatic mass, which was diagnosed as MHL at 2 years of age, due to an increase in mass size and a suspicion of malignant transformation during work-up. Histopathology confirmed intrahepatic adenosquamous carcinoma in the background of MHL, with a T2N0M0 pathological stage (stage II). The surgical margin was free from tumor cells. The patient fully recovered postoperatively and started receiving adjuvant chemotherapy. Previous case reports have only reported about the development of undifferentiated embryonal sarcoma or angiosarcoma as malignant transformation of MHL. Cases of other malignancies have not been published; however, it is difficult to rule out the occurrence of various malignancies related to the portal tract when considering the pathogenesis of the disease. To the best of our knowledge, this is the first case report of adenocarcinoma of bile duct origin secondary to MHL. This case report suggests that aggressive surgical management should be considered after the initial diagnosis of MHL.
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Affiliation(s)
- Sujin Gang
- Department of Surgery, Seoul National University Hospital, Seoul, Korea,Department of Pediatric Surgery, Asan Medical Center, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea,Corresponding author: YoungRok Choi, MD Department of Surgery, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea Tel: +82-2072-2511, Fax: +82-766-3975, E-mail: ORCID: https://orcid.org/0000-0001-9776-6325
| | - Sola Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
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Kim J, Hong SK, Suh KS, Lee KW, Yi NJ, Choi Y, Lee JM, Hong SY, Lee S. Risk factors of incisional hernia after liver transplantation in the era of mammalian target of rapamycin inhibitors combined usage. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-3685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jaeyoon Kim
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sola Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
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Lee S, Lee KW, Choi HH, Kim J, Hong SY, Choi Y, Yi NJ, Suh KS, Lee J, Kim JY. Prevalence of hepatopulmonary shunt in agitated saline test and lung perfusion scan and predictive value of arterial oxygenation. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-5298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Sola Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Hyun Hwa Choi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jiyoung Kim
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jaewon Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jae-Yoon Kim
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
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13
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Kim J, Choi Y, Suh KS, Lee KW, Yi NJ, Hong SK, Lee JM, Hong SY, Lee S. Group analysis of outcomes after liver transplant in patients aged 70 years or older. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jaeyoon Kim
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sola Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
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Lee J, Choi Y, Yi NJ, Kim J, Kim J, Lee S, Hong SY, Hong SK, Lee KW, Suh KS. Impact of allocation priority for children awaiting liver transplantation: a pediatric liver allocation simulated model analysis. Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jaewon Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jaeyoon Kim
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jiyoung Kim
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sola Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
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Choi HH, Lee KW, Suh KS, Yi NJ, Choi Y, Hong SK, Hong SY, Lee S, Kim JY, Lee J. Mammalian target of rapamycin inhibitor attenuates warm ischemic biliary injury (rat model). Korean Journal of Transplantation 2022. [DOI: 10.4285/atw2022.f-4763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Hyun Hwa Choi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk-Kyun Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sola Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jae Yoon Kim
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jeawon Lee
- Department of Hepatobiliary and Pancreatic Surgery, Seoul National University Hospital, Seoul, Korea
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Jang YW, Yoon Y, Maharjan R, Yi H, Jeong M, Hong SY, Lee MH, Kim SW, Kim JI, Yang JW. First Report of Pseudomonas cichorii Causing Bacterial vein necrosis on Perilla plants [ Perilla frutescens (L.) Britton.] in South Korea. Plant Dis 2022; 107:549. [PMID: 35700520 DOI: 10.1094/pdis-01-22-0143-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Perilla (Perilla frutescens L.) is the second most important upland crop and the third largest edible oil crop in Korea (Shin and Kim 1994). During a disease survey in Busan, Korea in September 2021, symptoms of vein necrosis were observed in perilla plants, with incidences of approximately 30% and 50% in two fields. Symptoms of spots on the perilla appeared as leaf dryness and spots with water-soaked blotches largely concentrated on the mid-veins of leaves. The lesions were initiated with water-soaked spots on the leaf or stem and gradually turned black or brown. Necrosis was also observed in the stems. A bacterium was isolated on Luria-Bertani (LB) agar from diseased leaf tissues that were surface-disinfected with 70% ethyl alcohol for 3-5 min and then washed with sterile water three times. Three pieces of sterilized leaf tissue (size: 0.5 × 0.5 cm) were mixed with 500 µL sterile water for 30 min, and then the suspension was serially diluted and spread on LB agar. Subsequently, isolates were cultivated on LB agar and King's Medium B agar (KMB) (Schaad et al. 2001), and they were predominantly cream-colored and circular bacterial colonies with undulated margins. The bacterial colonies on KMB displayed fluorescence under 365 nm UV light. The isolates were analyzed with the GEN III MicroPlate (Biolog, Hayward, CA, USA), and all isolates were identified as Pseudomonas cichorii, a devastating plant bacterium that damages a wide range of host plants worldwide, including in South Korea (Hikichi et al. 2013; Ramkumar et al. 2015). To identify the species of the bacterial pathogen, genomic DNA of four isolates (BS4922, BS4167, BS4345, and BS4560) was extracted, and the 16S rRNA gene and hrcRST gene were amplified with universal primers, 27F/1492R and Hcr1/Hcr2, and sequencing was then done (Patel et al. 2019). In the BLAST analysis, the 16S rRNA sequences (GenBank OM060656, OM275434, OM275435, OM275436) showed a 100% and 99% similarity to P. cichorii strains MAFF 302698 (AB724286) and P. cichorii strain Pc-Gd-4 (KU923373), respectively. Further, hrcRST gene sequences (GenBank OM143596, OM268864, OM268865, and OM268866) showed high similarity (>99%) with P. cichorii strain P16-51 (MG518230). A pathogenicity test of the four isolates was performed on 3 - 4 weeks old perilla plants by creating wounds with a needle on the lower leaves and stems, and then the plants were inoculated by spraying inoculum (108 CFU/ml). The plants that served as the negative control were wounded and sprayed with unsterilized water. The inoculated perilla plants were placed in a greenhouse at 28 ± 2oC , 80-85% relative humidity, and a natural photoperiod. The inoculation site began to show symptoms of water-soaked brown lesions. Disease symptoms such as leaf dryness, water-soaked blotches on the mid-vein of leaves, and necrosis on plant stems were observed in the inoculated plants 7-10 days after inoculation, whereas the plants of the negative control group did not show any symptoms. The bacteria were re-isolated from the diseased tissues of the plants, and DNA sequence analysis identified them as P. cichorii. Additionally, all isolates induced hypersensitivity reactions in tobacco and tomato leaves within 24 h after inoculation. To our knowledge, this is the first report of P. cichorii infecting perilla in South Korea. The findings in this study will provide the basic information for the development of diagnostic tools and management measures against P. cichorii in perilla.
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Affiliation(s)
- Yun-Woo Jang
- National Institute of Crop Science, RDA, , Southern Area Crop Science, 20, jeompiljae-ro, miryang, Korea (the Republic of), 50424;
| | - Youngnam Yoon
- National Institute of Crop Science, RDA, Corp Productiong Technology Research Division, 20th, Jeompiljaero, Miryang, Korea (the Republic of), 50424;
| | - Rameswor Maharjan
- National Institute of Crop Science, RDA, Crop Production Technology Research Division, Miryang, Gyeongsangnam-do, Korea (the Republic of);
| | - Hwijong Yi
- National Institute of Crop Science, RDA, Crop Production Technology Research Division, Miryang, Gyeongsangnam-do, Korea (the Republic of);
| | - M Jeong
- National Institute of Crop Science, RDA, Corp Productiong Technology Research Division, Miryang, Korea (the Republic of);
| | - S Y Hong
- National Institute of Crop Science, RDA, Mirayang, Korea (the Republic of);
| | - M H Lee
- National Institute of Crop Science, RDA, Miryang, Korea (the Republic of);
| | - S W Kim
- National Institute of Crop Science, RDA, Miryang, Korea (the Republic of);
| | - J I Kim
- National Institute of Crop Science, RDA, Miryang, Korea (the Republic of);
| | - Jung-Wook Yang
- National Institute of Crop Science Muan, Bioenergy crop research Institute, 199 Muanro Cheonggye, Muan, Jeonnam, Korea (the Republic of), 58545;
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Choi J, Choi Y, Hong SY, Suh S, Hong K, Han ES, Lee JM, Hong SK, Yi NJ, Lee KW, Suh KS. Changes in Indices of Steatosis and Fibrosis in Liver Grafts of Living Donors After Weight Reduction. Front Surg 2022; 9:827526. [PMID: 35592121 PMCID: PMC9110767 DOI: 10.3389/fsurg.2022.827526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundA short-term weight reduction program for potential living donors was introduced to reduce the extent of hepatic steatosis prior to liver transplantation. We aimed to investigate changes in non-invasive hepatic steatosis and fibrosis indices among those who completed the program.MethodsAmong 1,950 potential living liver donors between January 2011 and May 2019, 160 living donors joined the weight reduction program. The prospectively collected clinical data of these potential liver donors were analyzed retrospectively. Hepatic steatosis and fibrosis scores were determined using the fatty liver index (FLI), hepatic steatosis index (HSI), and NAFLD fibrosis score (NFS) and compared to MR spectroscopy (MRS) fat fraction results before and after weight reduction.ResultsThirty-nine potential living donors who had undergone MRS both before and after weight reduction were included in the analysis. Their body weight decreased from 78.02 ± 10.89 kg to 72.36 ± 10.38 kg over a mean of 71.74 ± 58.11 days. FLI, HSI, and MRS values decreased significantly from 41.52 ± 19.05 to 24.53 ± 15.93, 39.64 ± 3.74 to 35.06 ± 3.82, and 12.20 ± 4.05 to 6.24 ± 3.36, respectively. No significant decreases in NFS were observed. There was a significant correlation between the extent of HSI change and the extent of MRS change (R2 value = 0.69, P < 0.001), although there was no correlation between MRS and FLI.ConclusionThe weight reduction program significantly improved non-invasive indices of hepatic steatosis over a short period. HSI may allow for prediction of simple decreases in hepatic steatosis.
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Hong SK, Lee KW, Lee S, Hong SY, Suh S, Han ES, Choi Y, Yi NJ, Suh KS. Impact of tumor size on outcome of hepatectomy for hepatocellular carcinoma: A nationwide propensity score adjusted analysis. Int J Surg 2022. [DOI: 10.1016/j.ijsu.2022.106395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hong SK, Lee KW, Lee S, Hong SY, Suh S, Han ES, Choi Y, Yi NJ, Suh KS. Impact of tumor size on hepatectomy outcomes in hepatocellular carcinoma: a nationwide propensity score matching analysis. Ann Surg Treat Res 2022; 102:193-204. [PMID: 35475226 PMCID: PMC9010965 DOI: 10.4174/astr.2022.102.4.193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose The aim of this study was to compare surgical outcomes after liver resection for hepatocellular carcinoma (HCC) according to tumor size using a large, nationwide cancer registry-based cohort and propensity score matching. Methods From 2008 to 2015, a total of 12,139 patients were diagnosed with liver cancer and registered in the Korean Primary Liver Cancer Registry. Patients without distant metastasis who underwent hepatectomy as a primary treatment were selected. We performed 1:1 propensity score matching between the small (<5 cm), large (≥5 cm and <10 cm), and huge (≥10 cm) groups. Results Overall, 265 patients in the small and large groups were compared, and 64 patients each in the large and huge groups were compared. The overall and progression-free survival rates were significantly lower in the large group than in the small group (P < 0.001 and P < 0.001, respectively). Overall survival tended to be poorer in the huge group than in the large group (P = 0.051). The progression-free survival rate was significantly lower in the huge group than in the large group (P = 0.002). Conclusion Although primary liver resection can be considered even in patients with huge HCC, greater caution with careful screening for recurrence is needed.
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Affiliation(s)
- Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sola Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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Park JH, Suh S, Hong SK, Lee S, Hong SY, Choi Y, Yi NJ, Lee KW, Suh KS. Pure laparoscopic versus open right donor hepatectomy including the middle hepatic vein: a comparison of outcomes and safety. Ann Surg Treat Res 2022; 103:40-46. [PMID: 35919113 PMCID: PMC9300441 DOI: 10.4174/astr.2022.103.1.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/14/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose Analyses on pure laparoscopy in donor hepatectomies, including the middle hepatic vein (MHV), are still scarce. This study aimed to compare the outcomes of donor right hepatectomy, including the MHV, when performed laparoscopically with conventional open surgery. Methods Data from living donors who underwent donor right hepatectomy between January 2012 and December 2020 were retrospectively analyzed. The intraoperative and postoperative complication rates of the pure laparoscopic donor right hepatectomy (PLDRH) with MHV inclusion (PLDRHM) group were compared with the conventional open donor right hepatectomy with MHV inclusion (CDRHM) group and the PLDRH without MHV inclusion [PLDRHM(–)] group. Results Compared to the CDRHM group, the PLDRHM group had a longer bench time (P < 0.001) and higher Δ%, calculated as [(preoperative value – postoperative value)/preoperative value] × 100, of AST (P < 0.001), ALT (P < 0.001), and total bilirubin (P = 0.023), but shorter hospital stay (P = 0.004) and a lower rate of complications (P = 0.005). Compared to the PLDRHM(–) group, the PLDRHM group had fewer male donors (P < 0.001) and a lower body mass index (P < 0.001), estimated total liver volume (P < 0.001), and real graft weight (P < 0.001). Results of laboratory changes, hospital stays, and complication rates were similar between the 2 groups. Conclusion PLDRH with the inclusion of the MHV in selected donors and recipients is feasible and safe when performed by surgeons experienced in laparoscopic surgery, with favorable complication rates compared to CDRHM and PLDRHM(–).
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Affiliation(s)
- Jae Hyun Park
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sola Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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21
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Suh KS, Hong SK, Lee S, Hong SY, Suh S, Han ES, Yang SM, Choi Y, Yi NJ, Lee KW. Purely laparoscopic explant hepatectomy and hybrid laparoscopic/robotic graft implantation in living donor liver transplantation. Br J Surg 2021; 109:162-164. [PMID: 34642746 DOI: 10.1093/bjs/znab322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/24/2021] [Indexed: 11/12/2022]
Abstract
This report describes a purely laparoscopic/robotic technique for successful living donor liver transplantation (LDLT). Purely laparoscopic explant hepatectomy followed by purely laparoscopic and robotic graft implantation can be performed in LDLT.
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Affiliation(s)
- K S Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - S K Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - S Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - S Y Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - S Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - E S Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - S M Yang
- Department of Anaesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Y Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - N J Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - K W Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
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22
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Lee JM, Hong K, Han ES, Suh S, Hong SY, Hong SK, Choi Y, Yi NJ, Lee KW, Suh KS. Learning curve of graft bench operation in living donor liver transplantation: a cumulative sum analysis. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.op-1146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Jeong-Moo Lee
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Kwangpyo Hong
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery-Hepatobiliary, Seoul National University Hospital, Seoul, Korea
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Yoo BM, Hong SY, Hong SK, Ahn YH, Kang HK, Yi N, Suh S, Han ES, Lee KW, Suh KS. Renal replacement therapy is an alarm sign of survival outcome in pediatric liver transplantation. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.or-1200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Byung Min Yoo
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Yo Han Ahn
- Department of Pediatrics-Nephrology, Seoul National University Hospital, Seoul, Korea
| | - Hee Kyung Kang
- Department of Pediatrics-Nephrology, Seoul National University Hospital, Seoul, Korea
| | - Namjoon Yi
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
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24
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Oh MY, Kim H, Yi NJ, Hong SY, Han ES, Lee JM, Hong SK, Choi Y, Lee KW, Suh KS. The fate of donor-type ABO blood group antigen expression in the liver grafts of ABO incompatible adult living donor liver transplantation. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.op-1063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Moon Young Oh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Haeryoung Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Suk kyun Hong
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
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25
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Suh KS, Hong SK, Lee S, Hong SY, Suh S, Han ES, Yang SM, Choi Y, Yi NJ, Lee KW. Pure laparoscopic hepatectomy and robotic graft implantation in living donor liver transplantation: a case report. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.or-1141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kyung-Suk Suh
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Suk Kyun Hong
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Sola Lee
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Su young Hong
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Seong-Mi Yang
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery-Transplantation, Seoul National University Hospital, Seoul, Korea
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26
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Hong K, Hong SK, Han ES, Suh S, Hong SY, Lee JM, Choi Y, Yi NJ, Lee KW, Suh KS. Pure laparoscopic versus open right hepatectomy in living liver donors: bench-surgery time and graft weight discrepancy. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.op-1170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kwangpyo Hong
- Department of Surgery-Hepatobiliary, Eulji University Hospital, Daejeon, Korea
| | - Suk Kyun Hong
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Eui Soo Han
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Sanggyun Suh
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Su young Hong
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Moo Lee
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Nam-Joon Yi
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Kwang-Woong Lee
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
| | - Kyung-Suk Suh
- Department of Surgery-Hepatobiliary, Seoul National University College of Medicine, Seoul, Korea
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27
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Hong K, Hong SK, Han ES, Suh S, Hong SY, Lee JM, Choi Y, Yi NJ, Lee KW, Suh KS. Pure laparoscopic versus open right hepatectomy in living liver donors: which is longer bench-surgery time. Korean Journal of Transplantation 2020. [DOI: 10.4285/atw2020.op-1226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kwangpyo Hong
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Suk Kyun Hong
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Eui Soo Han
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Sanggyun Suh
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Su young Hong
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Jeong-Moo Lee
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - YoungRok Choi
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Nam-Joon Yi
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Kwang-Woong Lee
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
| | - Kyung-Suk Suh
- Division of Hepatobiliary, Department of Surgery, Seoul National University College of Medicine, Korea
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28
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Tang AM, Hamunime N, Adams RA, Kanyinga G, Fischer-Walker C, Agolory S, Prybylski D, Mutenda N, Sughrue S, Walker DD, Rennie T, Zahralban-Steele M, Kerrigan A, Hong SY. Introduction of an Alcohol-Related Electronic Screening and Brief Intervention (eSBI) Program to Reduce Hazardous Alcohol Consumption in Namibia's Antiretroviral Treatment (ART) Program. AIDS Behav 2019; 23:3078-3092. [PMID: 31444711 PMCID: PMC6801208 DOI: 10.1007/s10461-019-02648-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Alcohol is the most widely abused substance in Namibia and is associated with poor adherence and retention in care among people on antiretroviral therapy (ART). Electronic screening and brief interventions (eSBI) are effective in reducing alcohol consumption in various contexts. We used a mixed methods approach to develop, implement, and evaluate the introduction of an eSBI in two ART clinics in Namibia. Of the 787 participants, 45% reported some alcohol use in the past 12 months and 25% reported hazardous drinking levels. Hazardous drinkers were more likely to be male, separated/widowed/divorced, have a monthly household income > $1000 NAD, and report less than excellent ART adherence. Based on qualitative feedback from participants and providers, ART patients using the eSBI for the first time found it to be a positive and beneficial experience. However, we identified several programmatic considerations that could improve the experience and yield in future implementation studies.
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Affiliation(s)
- A M Tang
- School of Medicine, Tufts University, Boston, MA, USA.
- Department of Public Health and Community Medicine, Tufts University School of Medicine, 136 Harrison Avenue, MV248, Boston, MA, 02111, USA.
| | - N Hamunime
- Government of Namibia, Ministry of Health and Social Services, Windhoek, Namibia
| | - R A Adams
- Government of Namibia, Ministry of Health and Social Services, Windhoek, Namibia
| | - G Kanyinga
- Government of Namibia, Ministry of Health and Social Services, Windhoek, Namibia
| | | | - S Agolory
- U.S. Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - D Prybylski
- U.S. Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - N Mutenda
- Government of Namibia, Ministry of Health and Social Services, Windhoek, Namibia
| | - S Sughrue
- School of Medicine, Tufts University, Boston, MA, USA
| | - D D Walker
- School of Social Work, University of Washington, Seattle, WA, USA
| | - T Rennie
- School of Pharmacy, University of Namibia, Windhoek, Namibia
| | | | - A Kerrigan
- School of Medicine, Tufts University, Boston, MA, USA
| | - S Y Hong
- U.S. Centers for Disease Control & Prevention, Atlanta, GA, USA
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29
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Hu XG, Kim IG, Wang HJ, Kim BW, Hong SY, Kim YB, Shen XY. Reuse of Living-Donor Liver Graft in Second Recipient with Long-Term Survival. Transplant Proc 2019; 50:3984-3987. [PMID: 30577301 DOI: 10.1016/j.transproceed.2018.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 03/01/2018] [Indexed: 01/01/2023]
Abstract
Brain death is a rare situation after living-donor liver transplantation. However, the recipient who suffers from brain death and has functional liver graft is a potential liver donor. We report the 1st case of successful reuse of extended right living-donor liver graft after brain death of the first recipient. The first recipient, who had acute liver failure caused by hepatitis A virus, experienced brain death on the 2nd day after the transplantation. The allograft had a favorable regeneration and functional recovery. On the 7th day, the allograft was procured with a patent hepatic artery, bile duct, portal vein, and reconstructed outflow (right hepatic vein and middle hepatic vein) and successfully implanted into the second recipient. The second recipient has experienced a long-term survival without any complications.
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Affiliation(s)
- X-G Hu
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea
| | - I-G Kim
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea
| | - H-J Wang
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea.
| | - B-W Kim
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea
| | - S Y Hong
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea
| | - Y B Kim
- Department of Pathology, Ajou University School of Medicine, Suwon, South Korea
| | - X-Y Shen
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Ajou University School of Medicine, Suwon, South Korea
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30
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Hong SY, Kim BW, Wang HJ, Kim IG, Hu XG. Hanging Hepato-Atrial Anastomosis in Deceased-Donor Liver Transplantation for Budd-Chiari Syndrome With Extensive Vena Cava Obliteration: A Case Report. Transplant Proc 2017; 49:2395-2398. [PMID: 29198688 DOI: 10.1016/j.transproceed.2017.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/01/2017] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Although outcomes of liver transplantation (LT) have improved as the result of progress in surgical procedures, a failure to restore sufficient graft outflow may yield fatal consequences including graft dysfunction and even graft loss to date. In particular, patients with pre-existing obliterated venous drainage, such as those with Budd-Chiari syndrome (BCS), are at high risk of having venous complications followed by conventional LT. In selected cases, the transplant surgeons are compelled to modify the surgical procedures of LT from the conventional procedure. METHODS We describe an LT performed in a BCS patient with complete inferior vena cava (IVC) obstruction. A procedure that we named "hanging hepato-atrial anastomosis" was performed, in which 2 major modifications were made. One modification was the dissection of the lower inlet of the right atrium by use of a trans-abdominal approach and hepato-atrial anastomosis. This was performed by exposing the thoracic IVC through a trans-abdominal approach. The other modification was the manufacture of a blind pouch from the graft's infra-hepatic IVC without anastomosis. RESULTS Modifications were made possible as the result of meticulous examination of the patient's vascular anatomy before the operation. Fortunately, the patient had a heavy network of pre-vertebral veins that drained blood from the lower extremity and both kidneys to the azygos-hemi-azygos veins. CONCLUSIONS We learned that a meticulous assessment of vascular anatomy and complete understanding of hemodynamics are the keys to the successful LT for BCS in patients with extensive IVC abnormality. Thoracotomy may not be necessary to explore thoracic IVC when performing hepato-atrial anastomosis in LT for BCS.
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Affiliation(s)
- S Y Hong
- Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, Korea
| | - B-W Kim
- Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, Korea.
| | - H-J Wang
- Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, Korea
| | - I-G Kim
- Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, Korea
| | - X-G Hu
- Department of Liver Transplantation and Hepatobiliary Surgery, Ajou University School of Medicine, Suwon, Korea
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Abstract
The incidence and clinical aspects of seizures remain to be elucidated in patients with acute pesticide intoxication. The present study included subjects who ingested pesticide with the intention of committing suicide and were treated at Soonchunhyang University Hospital (Cheonan, Korea) between January 2011 and December 2014. We analyzed the incidence and characterized the type and frequency of seizure, from the medical records of 464 patients with acute pesticide intoxication, according to the pesticide class. The effect of seizure on the clinical outcome was assessed. The incidence of seizure was 31.5% in patients who ingested glufosinate ammonium {2-amino-4-[hydroxyl (methyl) phosphinoyl] butyrate; ammonium DL-homoalanin-4-yl (methyl) phosphinate}, followed by those who ingested pyrethroid (5.9%) or glycine derivatives (5.4%). All of the seizures developed between 12 and 24 h of pesticide ingestion and had ceased by 72 h after seizure initiation, following treatment with antiseizure medication. Generalized tonic-clonic seizures were the most commonly observed (85.7% of the cases). Multivariable logistic regression analysis showed that the effect of seizure on mortality was not statistically significant. In conclusion, glufosinate ammonium herbicide is the most common seizurogenic pesticide class. Seizure itself was not a risk factor for mortality in patients with acute glufosinate ammonium intoxication.
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Affiliation(s)
- S Park
- 1 Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - D E Kim
- 2 Department of Neurology, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - S Y Park
- 3 Department of Biostatistics, Soonchunhyang University, College of Medicine, Seoul, Korea
| | - H W Gil
- 1 Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - S Y Hong
- 1 Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
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32
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Hong SY. Predictors of quality of life in Korean older adults with arthritis: perspective of physical activity. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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33
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Hong SY. Effect of solitary eating and mobility limitation on depression in the Korean older adults. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Jordan MR, Obeng-Aduasare Y, Sheehan H, Hong SY, Terrin N, Duong DV, Trung NV, Wanke C, Kinh NV, Tang AM. Correlates of non-adherence to antiretroviral therapy in a cohort of HIV-positive drug users receiving antiretroviral therapy in Hanoi, Vietnam. Int J STD AIDS 2013; 25:662-668. [PMID: 24352130 DOI: 10.1177/0956462413516301] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 11/18/2013] [Indexed: 11/16/2022]
Abstract
The HIV epidemic in Vietnam is concentrated, with high prevalence estimates among injection drug users and commercial sex workers. Socio-demographics, substance use and clinical correlates of antiretroviral therapy non-adherence were studied in 100 HIV-1 infected drug users receiving antiretroviral therapy for at least 6 months in Hanoi, Vietnam. All study participants were men with a mean age of 29.9 ± 4.9 years. The median duration on antiretroviral therapy was 16.2 ± 12.7 months; 83% reported 'very good' or 'perfect' adherence in the past 30 days on a subjective one-item Likert scale at time of study enrollment; 48% of participants reported drug use within the previous 6 months, with 22% reporting current drug use. Injection drug use with or without non-injection drug use in the past 6 months (95% C.I. 2.19, 1.30-3.69) and years on antiretroviral therapy (95% C.I. 1.43, 1.14-1.78) were correlated with suboptimal adherence. These findings support Vietnam's ongoing scale-up of harm reduction programmes for injection drug users and their integration with antiretroviral therapy delivery. Moreover, results highlight the need to identify and implement new ways to support high levels of antiretroviral therapy adherence as duration on antiretroviral therapy increases.
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Affiliation(s)
- M R Jordan
- Tufts Medical Center, Boston, USA.,Tufts University School of Medicine, Boston, USA
| | | | | | - S Y Hong
- Tufts Medical Center, Boston, USA.,Tufts University School of Medicine, Boston, USA
| | - N Terrin
- Tufts University School of Medicine, Boston, USA
| | - D V Duong
- National Hospital of Tropical Diseases, Hanoi, Vietnam
| | - N V Trung
- National Hospital of Tropical Diseases, Hanoi, Vietnam
| | - C Wanke
- Tufts Medical Center, Boston, USA.,Tufts University School of Medicine, Boston, USA
| | - N V Kinh
- National Hospital of Tropical Diseases, Hanoi, Vietnam
| | - A M Tang
- Tufts Medical Center, Boston, USA
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35
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Jordan MR, Bennett DE, Wainberg MA, Havlir D, Hammer S, Yang C, Morris L, Peeters M, Wensing AM, Parkin N, Nachega JB, Phillips A, De Luca A, Geng E, Calmy A, Raizes E, Sandstrom P, Archibald CP, Perriëns J, McClure CM, Hong SY, McMahon JH, Dedes N, Sutherland D, Bertagnolio S. Update on World Health Organization HIV drug resistance prevention and assessment strategy: 2004-2011. Clin Infect Dis 2012; 54 Suppl 4:S245-9. [PMID: 22544182 DOI: 10.1093/cid/cis206] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The HIV drug resistance (HIVDR) prevention and assessment strategy, developed by the World Health Organization (WHO) in partnership with HIVResNet, includes monitoring of HIVDR early warning indicators, surveys to assess acquired and transmitted HIVDR, and development of an accredited HIVDR genotyping laboratory network to support survey implementation in resource-limited settings. As of June 2011, 52 countries had implemented at least 1 element of the strategy, and 27 laboratories had been accredited. As access to antiretrovirals expands under the WHO/Joint United Nations Programme on HIV/AIDS Treatment 2.0 initiative, it is essential to strengthen HIVDR surveillance efforts in the face of increasing concern about HIVDR emergence and transmission.
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Affiliation(s)
- M R Jordan
- World Health Organization, Geneva, Switzerland.
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Abstract
When clinicians treat patients with pesticide poisoning, they often pay attention only to the chief toxic agent and ignore the toxicity of the pesticide’s additives or solvents. Occasionally, however, a solvent (e.g. methanol) may itself be the cause of poisoning. We report a case of acute methanol intoxication that occurred after ingestion of a methomyl pesticide that contained methanol as an additive. A 49-year-old man was brought to the emergency department in an unconscious state after ingestion of 20 ml of a carbamate pesticide (chief ingredient: methomyl; active ingredient: methanol). Upon arrival, he was semicomatose and did not breathe spontaneously; however, his cholinesterase level was within normal limits and cholinergic symptoms were not observed. High anion gap metabolic acidosis was present. His blood ethanol level was 74.8 mg/dL. The urine methanol level was 55.60 mg/dL, and urine ethanol level was 22.0 mg/dL. He was treated with hemodialysis; subsequently, his metabolic acidosis resolved and he returned to normal mental status. We guessed that methanol, as the solvent of the methomyl, had produced the symptoms. When treating pesticide-poisoned patients, clinicians should identify the solvent used in the pesticide, because solvents such as methanol may exacerbate the symptoms of poisoned patients.
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Affiliation(s)
- HW Gil
- Department of Internal Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan, Kore
| | - JR Hong
- Department of Internal Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan, Kore
| | - HY Song
- Department of Immunology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - SY Hong
- Department of Internal Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan, Kore
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37
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Hwang JY, Park JW, Hong SY, Park HS. Reduced expression of angiopoietin-1 in Hantaan virus-infected human umbilical vein endothelial cell increases their permeability. Acta Virol 2009; 53:7-13. [PMID: 19301945 DOI: 10.4149/av_2009_01_07] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Hemorrhagic fever with renal syndrome (HFRS) caused by Hantaan virus (HTNV) is characterized by vascular hemorrhage and acute renal failure. Angiopoietin-1 (Ang-1) is a glycoprotein that maintains vessel integrity and reduces endothelial permeability. We found that in HTNV-infected human umbilical vein endothelial cells (HUVECs) the levels of Ang-1 mRNA and protein were reduced on days 2 and 3 post-infection (p.i.), when endothelial permeability was increased. The HTNV-stimulated permeability was reduced by treatment of HUVECs with Ang-1. The plasma Ang-1 level was lower in HFRS patients than in healthy persons. Paired plasma samples of HFRS patients revealed markedly lower Ang-1 levels during the acute phase of HFRS as compared to the convalescent phase. These findings suggested that HTNV reduced the Ang-1 expression in endothelial cells that might play an important role in the increase of vascular permeability in HFRS.
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Affiliation(s)
- J Y Hwang
- Department of Microbiology, Yuengnam University, Daegu, Korea
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38
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Jung GJ, Gil HW, Yang JO, Lee EY, Hong SY. Severe hypermagnesemia causing quadriparesis in a CAPD patient. Perit Dial Int 2008; 28:206. [PMID: 18332462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
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39
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Bar-Sadan M, Enyashin AN, Gemming S, Popovitz-Biro R, Hong SY, Prior Y, Tenne R, Seifert G. Structure and stability of molybdenum sulfide fullerenes. J Phys Chem B 2007; 110:25399-410. [PMID: 17165987 DOI: 10.1021/jp0644560] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
MoS2 nanooctahedra are believed to be the smallest stable closed-cage structures of MoS2, i.e., the genuine inorganic fullerenes. Here a combination of experiments and density functional tight binding calculations with molecular dynamics annealing are used to elucidate the structures and electronic properties of octahedral MoS2 fullerenes. Through the use of these calculations MoS2 octahedra were found to be stable beyond nMo > 100 but with the loss of 12 sulfur atoms in the six corners. In contrast to bulk and nanotubular MoS2, which are semiconductors, the Fermi level of the nanooctahedra is situated within the band, thus making them metallic-like. A model is used for extending the calculations to much larger sizes. These model calculations show that, in agreement with experiment, the multiwall nanooctahedra are stable over a limited size range of 104-105 atoms, whereupon they are converted into multiwall MoS2 nanoparticles with a quasi-spherical shape. On the experimental side, targets of MoS2 and MoSe2 were laser-ablated and analyzed mostly through transmission electron microscopy. This analysis shows that, in qualitative agreement with the theoretical analysis, multilayer nanooctahedra of MoS2 with 1000-25 000 atoms (Mo + S) are stable. Furthermore, this and previous work show that beyond approximately 105 atoms fullerene-like structures with quasi-spherical forms and 30-100 layers become stable. Laser-ablated WS2 samples yielded much less faceted and sometimes spherically symmetric nanocages.
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Affiliation(s)
- M Bar-Sadan
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot 76100, Israel
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Shin EC, Cho KM, Lim WJ, Hong SY, An CL, Kim EJ, Kim YK, Choi BR, An JM, Kang JM, Kim H, Yun HD. Phylogenetic analysis of protozoa in the rumen contents of cow based on the 18S rDNA sequences. J Appl Microbiol 2004; 97:378-83. [PMID: 15239705 DOI: 10.1111/j.1365-2672.2004.02304.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIMS To examine the diversity of protozoa in the rumen contents of cow. METHODS AND RESULTS Protozoa that inhabit the rumen were detected by PCR using protozoan-specific primers. Libraries of protozoan rDNA sequences were constructed from rumen fluid, solid tissues and epithelium. Twenty-three clones isolated from rumen fluid fell into two genera identified as Entodinium (69.6% of clones) and Epidinium (31.4% of clones). Of the clones isolated from rumen fluid, a moderate number were unidentifiable (30.4%). CONCLUSIONS The predominant protozoan genus identified in the whole rumen belonged to the Entodinium group (81.1%). Protozoa were not detected in the rumen epithelium. SIGNIFICANCE AND IMPACT OF THE STUDY These findings suggest that rumen fluid and solid tissues contain different protozoan populations that may play specific roles in rumen function. Quantitative PCR techniques and a more specific set of phylogenetic probes that distinguish between protozoan species are needed to determine the significance of newly identified groups and to determine the distribution of identified protozoan clusters in rumen microbial communities.
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Affiliation(s)
- E C Shin
- Division of Applied Life Science, Gyeongsang National University, Chinju, South Korea
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An JM, Lim WJ, Hong SY, Shin EC, Kim EJ, Kim YK, Park SR, Yun HD. Cloning and characterization of ce/8A gene from Rhizobium leguminosarum bv. trifolii 1536. Lett Appl Microbiol 2004; 38:296-300. [PMID: 15214728 DOI: 10.1111/j.1472-765x.2004.01485.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To isolate the cellulase gene from Rhizobium leguminosarum bv. trifolii 1536. METHODS AND RESULTS By the shot-gun method a clone (cel8A) harbouring 3.1 kb genomic DNA fragment from R. leguminosarum bv. trifolii 1536 was obtained. The cel8A gene coded 348 amino acids and it belongs to the glycosyl hydrolase family 8. The molecular mass of Cel8A protein induced from Escherichia coli DH5alpha, appeared to be 35 kDa. The optimum pH and optimum temperature was 7.0, and about 30 degrees C for its enzymatic activity respectively. CONCLUSIONS R. leguminosarum bv. trifolii 1536 had cel8A gene having an open reading frame of 1047 bp coded for the activity of hydrolyzation of carboxymethyl cellulose. SIGNIFICANCE AND IMPACT OF THE STUDY The production of celluloytic enzyme by R. leguminosarum bv. trifolii was confirmed, which would play specific roles in rhizobia. Future study should focus on its role in the infection and nodulation phenomena.
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Affiliation(s)
- J M An
- Division of Applied Life Science, Gyeongsang National University, Chinju, Korea
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Tay JH, Show KY, Lee DJ, Hong SY. Reuse of wastewater sludge with marine clay as a new resource of construction aggregates. Water Sci Technol 2004; 50:189-196. [PMID: 15581012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The disposal of sludge from wastewater treatment presents highly complex problems to any municipality. Most of the sludge disposal methods have varying degrees of environmental impact. Hence, it is necessary to explore potential areas of reuse in order to alleviate sludge disposal problems and to conserve natural resources. Industrial sludge and marine clay are two forms of high-volume wastes. Using these wastes as a resource of raw materials to produce construction aggregates would enable large-scale sludge reuse. The aggregates were produced at various sludge-clay combinations containing 0, 20, 50, 80 and 100% clay contents, respectively. The pelletized aggregates displayed lower particle densities ranged between 1.48 and 2.25 g/cm3, compared to the density of granite at 2.56 g/cm3. Good 28-day concrete compressive strength of 38.5 N/mm2 achieved by the 100% sludge aggregate was comparable to the value of 38.0 N/mm2 achieved of the granite control specimens. The leachate contamination levels from the aggregates after 150 days were found acceptable when used in concrete, indicating insignificant environmental contamination. The heat flow study showed increases in heat flow at the temperatures of 480 degrees C and between 660 degrees C and 900 degrees C, indicating a need for the extension of heating time around these temperatures.
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Affiliation(s)
- J H Tay
- Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, Block N1 #1A-29, Nanyang Avenue, Singapore 639798, Republic of Singapore.
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Mao T, Hong SY, Show KY, Tay JH, Lee DJ. A comparison of ultrasound treatment on primary and secondary sludges. Water Sci Technol 2004; 50:91-97. [PMID: 15580999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Ultrasound treatment of primary and secondary sludges was conducted to improve the qualities of sludges for the anaerobic digestion. The impacts of different sonication times, sonication densities and solids concentrations on ultrasonication efficiency were examined. The experimental results indicated that the significant reduction in particle size and increase in soluble organics could be achieved, implying that ultrasonication could offer a feasible treatment method to efficiently disintegrate sludge. The greater decrease in particle size and increase in soluble organics of sludge indicated that the secondary sludge has a more remarkable improvement after sonication over the primary sludge. With respects to the extent of disintegration and energy consumption, higher sonication density performed more effectively in terms of specific energy. There exists an optimal solids concentration range for both the sludges for optimum sonication. Within the optimal solids concentration range, efficient sonication can be effected and sludge would be disintegrated efficiently. The ultrasound would be attenuated by scattering and absorption if the solids concentration exceeds the optimal range. It appeared from the study that the mechanical shear forces caused by ultrasonic cavitation could be a key factor for sludge disintegration and collapse of cavitation bubbles could significantly alter the sludge characteristics.
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Affiliation(s)
- T Mao
- Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, Block N1 #B4-04, Nanyang Avenue, 639798, Singapore.
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Tay JH, Hong SY, Show KY, Chien CY, Lee DJ. Manufacturing artificial aggregates from industrial sludge and marine clay with addition of sodium salt. Water Sci Technol 2003; 47:173-178. [PMID: 12578191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The potential of converting industrial sludge and dredged marine clay into building and construction materials as an alternative to disposal was investigated in this study. The industrial sludge was mixed with marine clay at various compositions and was shaped into round pellets to be used as concrete aggregates. The pellets were then dried and transferred into a high temperature kiln where they were heated at 1,135 degrees C. The artificial aggregates were more porous then the normal granite aggregate. The occurrence of this condition was suspected to be attributed to two factors, viz. the firing temperature and the amount of sodium in the aggregates. To validate this hypothesis, the aggregates with and without added sodium chloride were fired at temperatures of 1,100 and 1, 200 degrees C. Results showed a reduction in the densities of the aggregates with the addition of sodium chloride and the increase in firing temperature.
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Affiliation(s)
- J H Tay
- School of Civil & Structural Engineering, Nanyang Technological University, Singapore 639798, Republic of Singapore.
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Bang CO, Park HK, Ahn MY, Shin HK, Hwang KY, Hong SY. 4G/5G polymorphism of the plasminogen activator inhibitor-1 gene and insertion/deletion polymorphism of the tissue-type plasminogen activator gene in atherothrombotic stroke. Cerebrovasc Dis 2002; 11:294-9. [PMID: 11385207 DOI: 10.1159/000047656] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Decreased fibrinolytic capacity due to increased plasminogen activator inhibitor-1 (PAI-1) activity and decreased tissue-type plasminogen activator (t-PA) activity has been associated with hypertension or atherothrombotic disorders. The aims of this study were to observe associations of the genetic polymorphism for PAI-1 and t-PA with hypertension and atherothrombotic stroke, and to elucidate whether impaired fibrinolytic activity in atherothrombotic stroke was related to atherothrombosis per se or to other risk factors such as hypertension. METHODS Patients with atherothrombotic stroke (n = 60), hypertension (n = 100), and control subjects (n = 100) were enrolled. We genotyped all subjects for 4G/5G polymorphism in the promoter region of the PAI-1 gene and the Alu-repeat insertion/deletion (I/D) polymorphism in intron h of the t-PA gene by polymerase chain reaction and endonuclease digestion. RESULTS The frequency of the 4G/4G genotype of PAI-1 was significantly higher in the atherothrombotic stroke patients than the control subjects (41.7 versus 21%; p = 0.005), but not in the hypertensive subjects. There was a significant association between 4G/4G genotype of PAI-1 and atherothrombotic stroke (adjusted odds ratio = 3.11, 95% confidence interval 1.18-8.15), adjusting for age, sex, total cholesterol, low-density lipoprotein, triglyceride, and body mass index. However, the number of the I/I genotype of t-PA in the atherothrombotic stroke or hypertensive patients was virtually identical to the control subjects. CONCLUSION Our results suggest that the 4G/4G genotype of the PAI-1 gene is significantly associated with an increased risk of atherothrombotic stroke. This finding also supports that impaired fibrinolytic activity in atherothrombotic stroke is related to atherothrombosis per se, but not to hypertension, one of the most important risk factors of atherothrombotic stroke.
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Affiliation(s)
- C O Bang
- Department of Neurology, Soonchunhyang University Chunan Hospital, Chunan City, Chungnam, Republic of Korea.
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Kim MK, Park SR, Cho SJ, Lim WJ, Ryu SK, An CL, Hong SY, Park YW, Kahng GG, Kim JH, Kim H, Yun HD. The effect of a disrupted yhjQ gene on cellular morphology and cell growth in Escherichia coli. Appl Microbiol Biotechnol 2002; 60:134-8. [PMID: 12382054 DOI: 10.1007/s00253-002-1102-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2002] [Revised: 06/03/2002] [Accepted: 07/18/2002] [Indexed: 10/27/2022]
Abstract
The 5' upstream region of the cellulose synthase operon ( bcs operon) has been isolated by cloning from Escherichia coli. A gene encoding YhjQ is located 1.0 kb upstream of the bcs operon in E. coli. The function of YhjQ remains unknown. Insertional inactivation of the yhjQ gene causes abnormal cell division, resulting in incomplete partition of the chromosome and filamentous cells of various sizes. These results suggest that the product of yhjQ may affect normal doubling and cellular morphology.
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Affiliation(s)
- M K Kim
- Division of Applied Life Science, Gyeongsang National University, Chinju 660-701, Korea
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Abstract
The purpose of this study was to examine whether there are the associations between TNF alpha and TNF beta gene polymorphisms and the development and progression of Ig A nephropathy (IgAN). A cross-sectional study on TNF alpha and TNF betagene polymorphisms by polymerase chain reaction with restriction fragment length poly-morphisms was performed on 76 patients with primary IgAN confirmed by renal biopsy and 100 healthy controls. The allele with G-->A substitution was designated as TNFA2 for the TNF alpha gene and TNFB2 for the TNF betagene. A patient in whom dialysis treatment was started or whose serum creatinine became double or over during the follow-up duration was designated as a "progressor". The TNFA2/ TNFA2 genotype was more prevalent in the progressor than in the non-pregressor group (20.0 vs 3.3%, p<0.05). Clinical factors such as serum creatinine, systolic and diastolic blood pressure (p<0.001, respectively) were higher and pathologic factor such as Grade IV or V renal lesions was more prevalent (p<0.01) in the progressor than in the non-progressor group. Therefore, TNFA2/TNFA2 genotype may be a risk factor for the progression of IgAN.
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Affiliation(s)
- E Y Lee
- Department of Internal Medicine, Soonchunhyang University Chonan Hospital, Chonan, Korea
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Hong SY. New frontiers in the continuum of dental education. N Y State Dent J 2001; 67:26-9. [PMID: 11803759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
During the past 150 years, dental education and training have changed from an apprenticeship to a university-based dental school. The future of dental education will be shaped by changing demographics, advances in technology, and a greater integration of science and research into the dental profession. We are entering an age of interdisciplinary practice, where dentistry provides oral health care as an integral part of an individual's overall health care.
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Affiliation(s)
- S Y Hong
- Columbia University School of Dental and Oral Surgery, USA
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Ryu SK, Cho SJ, Park SR, Lim WJ, Kim MK, Hong SY, Bae DW, Park YW, Kim BK, Kim H, Yun HD. Cloning of the cel9A gene and characterization of its gene product from marine bacterium Pseudomonas sp. SK38. Appl Microbiol Biotechnol 2001; 57:138-45. [PMID: 11693911 DOI: 10.1007/s002530100743] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The yellow-pigmented bacterial strain causing green spot rot and death of layer was isolated from Porphyra dentata. This strain has been identified as Pseudomonas sp., harboring agarase, xylanase, and protease activity, as well as carboxymethyl-cellulase (CMCase). Using genomic DNA from the Pseudomonas sp. SK38 digested with Sau3AI and ligated into pBluescript II KS+, we isolated a cel gene encoding a CMCase in Pseudomonas sp. SK38. A 4.5-kb fragment was subcloned into pKR400. The structure of the cel9A gene consists of an open reading frame of 1,521 bp starting with a GTG start codon and ending with a TAG stop codon. It thus encodes 506 amino acid residues of a protein with a calculated molecular weight of 52,636 daltons plus a signal peptide of 22 amino acids. The deduced amino acid sequence of the cel9A protein is similar to the same protein of Clostridium thermocellum. It contains, in particular, the two conserved regions of the glycoside hydrolase family 9. The apparent molecular mass of the Cel9A protein is 52 kDa as estimated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The enzyme is most active at pH 6-7 and an optimal temperature of around 30 degrees C.
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Affiliation(s)
- S K Ryu
- Department of Agricultural Chemistry, Gyeongsang National University, Chinju, Korea
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Abstract
By using short linear antimicrobial peptides as a model system, the effect of peptide charge on the specificity between Candida albicans (fungi) and Gram-positive bacteria was investigated. In a present study, we added and/or deleted lysine residue(s) at the C-terminal and/or N-terminal end(s) of an antimicrobial peptide (KKVVFKVKFK-NH(2)) and synthesized the peptides that had similar alpha helical structures in a lipid membrane mimic condition. The increase of peptide charge improved antifungal activity without the change of antibacterial activity. Structure-activity relationship study about the peptides revealed that the net positive charge must play an important role in the specificity between C. albicans and Gram-positive bacteria and the increase of the net positive charge without the moderate change of secondary structure could improve activity for C. albicans rather than Gram-positive bacteria.
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Affiliation(s)
- S Y Hong
- Department of Biochemistry, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul 120-749, South Korea
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