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Kim YN, Park B, Kim JW, Kim BG, Kim SW, Kim HS, Choi CH, Lim MC, Yl Ngoi N, Sp Tan D, Lee JY. Triplet maintenance therapy of olaparib, pembrolizumab and bevacizumab in women with BRCA wild-type, platinum-sensitive recurrent ovarian cancer: the multicenter, single-arm phase II study OPEB-01/APGOT-OV4. Nat Commun 2023; 14:5476. [PMID: 37673858 PMCID: PMC10482952 DOI: 10.1038/s41467-023-40829-2] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 08/11/2023] [Indexed: 09/08/2023] Open
Abstract
In this multicenter, open-label, single-arm, Phase II study with Simon two-stage optimum design (NCT04361370), we investigate the efficacy and safety of triplet maintenance (olaparib, pembrolizumab, bevacizumab) in patients with platinum-sensitive recurrent ovarian cancer who are wild-type for BRCA 1/2. A total of 44 patients were enrolled, and the median follow-up duration was 22.9 months (interquartile range: 17.4-24.7). The primary outcome was 6-months progression-free survival (PFS), which was 88.6% (95% confidence interval [CI] 75.4-96.2), meeting the pre-specified primary endpoint. The secondary outcomes reported here include median PFS, 12-months PFS, and overall survival and safety. The median PFS was 22.4 months (20.4-∞), with a 12-months PFS rate of 84.0% (95% CI 69.3-92.0). The median overall survival was 28.6 months (27.3-∞). The combination demonstrated tolerable toxicity with manageable side effects. Other secondary outcomes include time-to-progression, time to subsequent treatment, time to second treatment and PFS2; however, this data is not reported, as treatment is still ongoing in a majority of patients. Exploratory analysis shows that patients who were homologous recombination deficiency-positive or had a programmed death-ligand 1 combined positive score ≥1 showed a favorable response (P = 0.043 and P < 0.001, respectively). Thus, triplet maintenance shows durable efficacy with tolerable safety in patients with platinum-sensitive recurrence.
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Affiliation(s)
- Yoo-Na Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
| | - Boram Park
- Biomedical Statistics Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Korea
| | - Jae Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Wun Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Seung Kim
- Department of Obstetrics and Gynecology, Seoul National University, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Myong Cheol Lim
- Gynecologic Cancer Branch & Center for Uterine Cancer, National Cancer Center, Goyang, Korea
| | - Natalie Yl Ngoi
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Haematology-Oncology, National University Cancer Institute, National University Hospital, Singapore, Singapore
| | - David Sp Tan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Haematology-Oncology, National University Cancer Institute, National University Hospital, Singapore, Singapore
- National University of Singapore (NUS) Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute, National University of Singapore, Singapore, Singapore
| | - Jung-Yun Lee
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea.
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Lee B, Kim BG, Baraki TG, Kim JS, Lee YJ, Lee SJ, Hong SJ, Ahn CM, Shin DH, Kim BK, Ko YG, Choi DH, Honh MK, Jang YS. Stent expansion evaluated by optical coherence tomography and subsequent outcomes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1203] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Regarding stent expansion indexes, previous optical coherence tomography (OCT) studies have shown minimal stent area (MSA) to be most predictive of adverse events.
Purpose
We sought to evaluate the impact of various stent expansion indexes by post-stent OCT on long-term clinical outcomes, and hence to find OCT-defined optimal stent expansion criteria.
Methods
Of the patients registered in the Yonsei OCT registry, a total of 1071 patients with 1123 native coronary artery lesions treated with new-generation drug-eluting stents under the OCT guidance and analyzable final post-stent OCT were included. Stent expansion indexes and different suboptimal stent expansion criteria were evaluated for their association with device-oriented clinical endpoints (DoCE) including cardiac death, target vessel-related myocardial infarction (TVMI) or stent thrombosis, and target lesion revascularization. Major safety events (MSE) included cardiac death, TVMI or stent thrombosis.
Results
The median follow-up period was 40.6 (interquartile range 22.0–50.0) months. As a continuous variable, MSA, adaptive volumetric stent expansion (stent volume/adaptive reference lumen volume) and overall volumetric stent expansion (stent volume/post-stent lumen volume) were significantly predictive of DoCE. As a categorical criteria, MSA <5.0 mm2 (hazard ratio [HR] 3.80; 95% confidence interval [CI] 1.53–9.45), MSA/distal reference lumen area <90% (HR 2.13; 95% CI 1.10–4.14), and overall volumetric stent expansion ≥96.6% (HR 2.38; 95% CI 1.09–5.22) were independently associated with DoCE after adjusting for confounders, and a total malapposition volume ≥7.0 mm3 (HR 3.38; 95% CI 1.05–10.93) was linked to MSE.
Conclusions
This OCT study highlights that sufficient stent expansion to achieve adequate absolute MSA and relative MSA by distal reference lumen area and alleviate significant malapposition is important to improve clinical outcome, but overall stent overexpansion may have deleterious effect.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B Lee
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - B G Kim
- Sanggye Paik Hospital , Seoul , Korea (Republic of)
| | - T G Baraki
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J S Kim
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - Y J Lee
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - S J Lee
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - S J Hong
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - C M Ahn
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - D H Shin
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - B K Kim
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - Y G Ko
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - D H Choi
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - M K Honh
- Severance Hospital, Cardiology , Seoul , Korea (Republic of)
| | - Y S Jang
- Cha Bundang Medical Center, cardiology , Seongnam , Korea (Republic of)
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Kim BG, Yuk JS, Kim GS, Seo JK, Jin MN, Lee HY, Seo YS, Kim MH, Yang SW, Yoon SH, Byun YS, Kim BO. Effect of early hysterectomy on a risk of incident cardiovascular disease in women: a nationwide population-based cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2495] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
Women who inevitably underwent surgical hysterectomy before natural menopause may have an earlier increase in hematocrit and storage iron than women who continue menstruation, thereby increasing the risk of cardiovascular disease (CVD) early. We aimed to evaluate the association of women with hysterectomy vs. without hysterectomy before their 50s with the risk of incident CVD.
Methods
This was a retrospective-cohort study, 135,575 women aged 40 to 50 years in 2011–2014 were extracted from the Korean Health Insurance Review and Assessment Service data and after propensity score matching, 55,539 pairs were included in hysterectomy and non-hysterectomy group respectively. The primary endpoint was major adverse cardiac and cerebrovascular events (MACCE), a composite of cardiovascular death, myocardial infarction (MI), stroke, and coronary artery revascularization.
Results
After adjustment for confounding factors, hysterectomy group had an increased risk of MACCE compared with non-hysterectomy group (hazard ratio [HR], 1.25; 95% confidence interval [CI], 1.09–1.44). Regarding individual outcomes, cardiovascular death, MI, and coronary revascularization were comparable between the groups, whereas, the risk of stroke was significantly higher in hysterectomy group than non-hysterectomy group (HR, 1.31; 95% CI, 1.12–1.53). Even after excluding women who underwent oophorectomy, hysterectomy group had a higher risk of MACCE than non-hysterectomy group (HR, 1.24; 95% CI 1.06–1.44).
Conclusions
Early surgical menopause due to hysterectomy, not hormonal menopause, was associated with an increased risk for a composite of CVD, especially stroke. This suggest that the role of “uterus” as well as sex hormones may be important for the sharp increase in the risk of CVD in women after menopause.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B G Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J S Yuk
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - G S Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J K Seo
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - M N Jin
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - H Y Lee
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - Y S Seo
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - M H Kim
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - S W Yang
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - S H Yoon
- Sanggye Paik Hospital, Obstetrics and Gynecology , Seoul , Korea (Republic of)
| | - Y S Byun
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
| | - B O Kim
- Inje University Sanggye Paik Hospital, Cardiology , Seoul , Korea (Republic of)
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Kim GS, Seo JK, Kim BG, Byun YS, Kim BO. Optimal strategy for antiplatelet therapy after endovascular revascularization in patients with lower extremity artery disease. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1972] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The duration of antiplatelet therapy after endovascular revascularization in patients with lower extremity artery disease (LEAD) has not been well established. This study aimed to evaluate the clinical outcome according to the duration of dual antiplatelet therapy (DAPT) in real practice.
Methods
From April 2009 to June 2019, 376 patients with LEAD underwent successful endovascular revascularization. After the procedure, the received single antiplatelet therapy (SAPT) or DAPT of various durations were classified into two groups (SAPT or DAPT <6 months vs. DAPT ≥6 months). The primary outcomes were major adverse cardiovascular events (MACEs) and major adverse limb events (MALEs). The safety outcome was moderate-to-severe bleeding according to the Global Use of Strategies to Open Occluded Arteries (GUSTO) criteria.
Results
Over the 40-month follow-up period, MACE occurred less frequently in the DAPT ≥6 months group than that in the SAPT or DAPT <6 months group (12.4% vs. 23.8%; hazard ratio [HR]: 0.56; 95% confidence interval [CI]: 0.35–0.89; p=0.014) after inverse probability-weighted adjustment and propensity-score matching analysis (HR: 0.55, 95% CI; 0.30–0.99, p=0.048). The incidence of MALE did not show significant difference between the two groups (DAPT ≥6 months group: 17.1% vs. SAPT or DAPT <6 months group: 13.1%; HR: 1.05; 95% CI: 0.62–1.78; p=0.846). A significant difference between the DAPT ≥6 months group and the SAPT or DAPT <6 months group was not observed regarding the incidence of moderate-to-severe GUSTO bleeding.
Conclusions
In patients with LEAD, DAPT for ≥6 months after endovascular revascularization was associated with a lower incidence of MACE.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): National Research Foundation of Korea (NRF) grant funded by the government of Korea (MSIT) (No. 2019R1G1A1100442).
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Affiliation(s)
- G S Kim
- Inje University, Sanggye Paik Hospital , Seoul , Korea (Republic of)
| | - J K Seo
- Inje University, Sanggye Paik Hospital , Seoul , Korea (Republic of)
| | - B G Kim
- Inje University, Sanggye Paik Hospital , Seoul , Korea (Republic of)
| | - Y S Byun
- Inje University, Sanggye Paik Hospital , Seoul , Korea (Republic of)
| | - B O Kim
- Inje University, Sanggye Paik Hospital , Seoul , Korea (Republic of)
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Kim NA, Kim BG, Lee J, Chung HT, Kwon HR, Kim YS, Choi JB, Song JH. Response After Repeated Ketamine Injections in a Rat Model of Neuropathic Pain. Physiol Res 2022; 71:297-303. [PMID: 35275700 PMCID: PMC9150560 DOI: 10.33549/physiolres.934841] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/25/2022] [Indexed: 11/25/2022] Open
Abstract
Ketamine, an N-methyl-D-aspartate antagonist, reduces pain by decreasing central sensitization and pain windup. However, chronic ketamine use can cause tolerance, dependency, impaired consciousness, urinary symptoms, and abdominal pain. This study aimed to investigate the effects of repeated ketamine injections and ketamine readministration after discontinuation in a rat model of neuropathic pain. To induce neuropathic pain, partial sciatic nerve ligation (PSNL) was performed in 15 male Wistar rats, and these animals were divided into three groups: PSNL (control), PSNL + ketamine 5 mg/kg (K5), and PSNL + ketamine 10 mg/kg (K10; n=5 each). Ketamine was injected intraperitoneally daily for 4 weeks, discontinued for 2 weeks, and then readministered for 1 week. Following PSNL, the mechanical withdrawal threshold was determined weekly using the Von Frey. The K10 group showed a significant increase in the mechanical withdrawal threshold, presented here as the target force (in g), at 21 and 28 days compared to the time point before ketamine injection (mean±SE, 276.0±24.0 vs. 21.6±2.7 and 300.0±0.0 vs. 21.6±2.7, respectively; P<0.01) and at 14, 21, and 28 days compared to the control group (108.2±51.2 vs. 2.7±1.3, 276.0±24.0 vs. 2.5±1.5, and 300.0±0.0 vs. 4.0±0.0, respectively; P<0.05). However, in the K10 group, the ketamine effects decreased significantly at 7 days after readministration compared to those after 28 days of repeated injections (P<0.05). In the K10 group, repeated ketamine injections showed a significant increase in antinociceptive effect for >2 weeks, but this ketamine effect decreased after drug readministration.
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Affiliation(s)
- N A Kim
- Department of Anesthesiology and Pain Medicine, Inha University Hospital, Inha University School of Medicine, Incheon, South Korea.
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Kim N, Park W, Cho WK, Bae DS, Kim BG, Lee JW, Choi CH, Kim TJ, Lee YY. Significance of serum CA125 level in surgically resected cervical adenocarcinoma with adverse features. J Gynecol Oncol 2021; 32:e72. [PMID: 34132070 PMCID: PMC8362813 DOI: 10.3802/jgo.2021.32.e72] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/07/2021] [Revised: 05/10/2021] [Accepted: 05/15/2021] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE Unlike cervical squamous cell carcinoma, there are no consensus criteria for serum tumor markers in cervical adenocarcinoma. This study aimed to identify the prognostic value of preoperative carbohydrate antigen 125 (CA125) levels in cervical adenocarcinoma patients with adverse pathologic features. METHODS A total of 105 patients who underwent radical hysterectomy followed by adjuvant radiotherapy (RT) or concurrent chemoradiation therapy were included. Locoregional recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), and overall survival (OS) were evaluated using the Cox proportional hazard regression model. RESULTS Using a cutoff value of 50 U/mL, 83 and 22 patients had low- and high-CA125, respectively. Patients with high-CA125 had a larger tumor size, more frequent parametrial extension, and more frequent lymph node metastasis than those with low-CA125. During a median follow-up of 59.3 (interquartile range, 32.7-97.8) months, patients with high-CA125 showed inferior 5-year LRFS, DMFS, and OS rates compared to those with low-CA125 (38.5% vs. 70.0%; 37.0% vs. 69.4%; 43.6% vs. 78.1%, respectively, all p<0.05). In multivariable analysis, the high-CA125 remained significant prognostic factor for LRFS, DMFS, and OS (all p<0.05). Furthermore, 12 patients with high-CA125 at recurrence exhibited lower 5-year OS rates than 21 patients with low-CA125 at recurrence (0.0% vs. 51.3%, p=0.003). CONCLUSION In this retrospective analysis, the serum CA125 level at diagnosis and recurrence was related to the extent of disease and prognosis of cervical adenocarcinoma with adverse pathologic features. A CA125 level of ≥50 U/mL may be a prognostic surrogate marker for cervical adenocarcinoma in patients with the presence of adverse factors.
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Affiliation(s)
- Nalee Kim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Won Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Won Kyung Cho
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Lee YJ, Lim MC, Kim BG, Ngoi NY, Choi CH, Park SY, Tan DS, Go Y, Lee JY. A single-arm phase II study of olaparib maintenance with pembrolizumab and bevacizumab in BRCA non-mutated patients with platinum-sensitive recurrent ovarian cancer (OPEB-01). J Gynecol Oncol 2021; 32:e31. [PMID: 33559413 PMCID: PMC7930449 DOI: 10.3802/jgo.2021.32.e31] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 08/30/2020] [Revised: 11/29/2020] [Accepted: 01/02/2021] [Indexed: 11/30/2022] Open
Abstract
Background The optimal treatment of BRCA wild-type patients with platinum-sensitive recurrent ovarian cancer remains unknown. Recently, there is an increase in the evidence to support the role of the combination of a poly(adenosine diphosphate-ribose) polymerase inhibitor, anti-angiogenic agents, and immunotherapy as maintenance therapy in BRCA wild-type patients with platinum-sensitive recurrence. We hypothesized that adding pembrolizumab and bevacizumab to olaparib maintenance can increase progression-free survival (PFS) in BRCA wild-type patients with platinum-sensitive recurrent ovarian cancer. Methods BRCA wild-type patients who received two previous courses of platinum-containing therapy, achieved complete or partial response to last treatment, and the treatment-free interval is >6 months after the penultimate platinum-based chemotherapy offered olaparib maintenance with pembrolizumab and bevacizumab. Forty-four patients will be included from 4 sites across Singapore and Korea. The primary endpoint of the study is 6-month PFS rate. Trial Registration ClinicalTrials.gov Identifier: NCT04361370, Clinical Research Information Service Identifier: KCT0005144
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Affiliation(s)
- Yong Jae Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Myong Cheol Lim
- Division of Tumor Immunology, Center for Gynecologic Cancer and Center for Clinical Trials, Research Institute and Hospital, National Cancer Center, Goyang, Korea.,Department of Cancer Control & Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.,Gynecologic Cancer Branch & Center for Uterine Cancer, National Cancer Center, Goyang, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Natalie Yl Ngoi
- Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Yoon Park
- Gynecologic Cancer Branch & Center for Uterine Cancer, National Cancer Center, Goyang, Korea
| | - David Sp Tan
- Department of Haematology-Oncology, National University Cancer Institute, Singapore.,Cancer Science Institute, National University of Singapore, Singapore
| | - Yunjung Go
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Yun Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea.
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Shin W, Noh JJ, Seo SS, Kang S, Choi CH, Park SY, Kim BG, Lim MC. Survival Effects of Cytoreductive Surgery for Refractory Patients after Neoadjuvant Chemotherapy in Advanced Epithelial Ovarian Cancer. Yonsei Med J 2020; 61:935-941. [PMID: 33107236 PMCID: PMC7593099 DOI: 10.3349/ymj.2020.61.11.935] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Salvage second-line chemotherapy is usually recommended for patients with advanced epithelial ovarian cancer (AEOC) who develop progressive disease (PD) after neoadjuvant chemotherapy (NAC). Herein, we investigated the role of cytoreductive surgery (CRS) for such patients. MATERIALS AND METHODS We retrospectively reviewed the medical records of 36 patients with AEOC who developed PD after receiving NAC at two tertiary academic centers with different treatment strategies between 2001 and 2016. Patients who developed PD after NAC were consistently treated with CRS at one hospital (group A; n=13) and second-line chemotherapy at another (group B; n=23). The clinical characteristics and treatment outcomes were compared between the groups. RESULTS Overall survival (OS) was longer in group A than in group B (19.4 months vs. 7.9 months; p=0.011). High-grade serous histology was associated with longer OS than non-high-grade serous types. In group A, optimal surgery resection (<1 cm) was achieved after CRS in 6 patients (46%). Multivariate analysis showed that the treatment option was the only independent predictive factor for OS (hazard ratio, 2.30; 95% confidence interval, 1.02-5.17; p=0.044). CONCLUSION CRS may result in a survival benefit even in patients with AEOC who develop PD after NAC.
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Affiliation(s)
- Wonkyo Shin
- Center for Gynecologic Cancer, National Cancer Center, Goyang, Korea
| | - Joseph J Noh
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Soo Seo
- Center for Gynecologic Cancer, National Cancer Center, Goyang, Korea
| | - Sokbom Kang
- Center for Gynecologic Cancer, National Cancer Center, Goyang, Korea
- Precision Medicine Branch, National Cancer Center, Goyang, Korea
- Department of Cancer Control & Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Yoon Park
- Center for Gynecologic Cancer, National Cancer Center, Goyang, Korea
- Common Cancer Branch, Research Institute, National Cancer Center, Goyang, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Myong Cheol Lim
- Center for Gynecologic Cancer, National Cancer Center, Goyang, Korea
- Department of Cancer Control & Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
- Center for Clinical Trials, Hospital, National Cancer Center, Goyang, Korea
- Division of Tumor Immunology, Research Institute, National Cancer Center, Goyang, Korea.
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Han JU, Kim BG, Yang C, Choi WH, Jeong J, Lee KJ, Kim H. Prospective randomized comparison of cerebrospinal fluid aspiration and conventional popping methods using 27-gauge spinal needles in patients undergoing spinal anaesthesia. BMC Anesthesiol 2020; 20:32. [PMID: 32000680 PMCID: PMC6993332 DOI: 10.1186/s12871-020-0954-9] [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: 04/15/2019] [Accepted: 01/23/2020] [Indexed: 11/22/2022] Open
Abstract
Background Performing spinal anaesthesia using the conventional popping method with a 27-gauge (27G) spinal needle is technically difficult. In this study, we compared the aspiration and conventional popping method for spinal anaesthesia using 27G Quincke-type needles. Methods This prospective, randomized study enrolled 90 patients, aged 19 to 65 years, with American Society of Anesthesiologists physical status I-III, who were undergoing spinal anaesthesia. Patients were randomly assigned to one of two groups using a computer-generated random number table: patients receiving spinal anaesthesia using the aspiration method, in which the needle is advanced with continuous aspiration, or the conventional popping method. The primary outcome measure was the success rate of the first attempt to perform dural puncture. Number of attempts and passages, withdrawal cases, successful attempt time, total procedure time, and actual depth of dural puncture were recorded. Results Eighty-eight patients were included in the study. In the aspiration group, the success rate of first attempt for dural puncture was 93.3%, compared with 72.1% in the popping group (P = 0.019). Success involving needle withdrawal was recorded in 4 (8.9%) patients in the aspiration group and 13 (30.2%) in the popping group (P = 0.024). In the popping group, the number of attempts was significantly higher (P = 0.044), and total procedure time was significantly longer (P = 0.023). Actual depths of dural puncture were deeper in the popping group than in the aspiration group (P = 0.019). Conclusions The aspiration method using a 27G Quincke-type needle offers clinical benefits for dural puncture compared with the conventional popping method for spinal anaesthesia. Trial registration Clinical research information service number: KCT0002815, registered 21/Apr/2018. Retrospectively registered.
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Affiliation(s)
- J U Han
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - B G Kim
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - C Yang
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - W H Choi
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - J Jeong
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - K J Lee
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea
| | - H Kim
- Department of Anesthesiology and Pain Medicine, Inha University College of Medicine, 27, Inhang-ro, Jung-gu, Incheon, Republic of Korea.
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10
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Lee JY, Kim JW, Lim MC, Kim S, Kim HS, Choi CH, Yi JY, Park SY, Kim BG. A phase II study of neoadjuvant chemotherapy plus durvalumab and tremelimumab in advanced-stage ovarian cancer: a Korean Gynecologic Oncology Group Study (KGOG 3046), TRU-D. J Gynecol Oncol 2019; 30:e112. [PMID: 31576697 PMCID: PMC6779618 DOI: 10.3802/jgo.2019.30.e112] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/18/2019] [Accepted: 08/21/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND A single-arm phase II study of neoadjuvant chemotherapy plus durvalumab and tremelimumab in the treatment of advanced-stage ovarian cancer has begun in Korea. We hypothesized that adding durvalumab (anti-programmed death-ligand 1 antibody) and tremelimumab (anti-cytotoxic T-lymphocyte-associated protein 4 antibody) to chemotherapy in treating this cancer can increase progression-free survival (PFS) with minimal effects on safety. METHODS During treatment, serial biopsies will be performed on pre-treatment, at interval debulking surgery and progression to identify immune biomarkers and changes in the tumor microenvironment. Patients with histologically confirmed stage IIIC/IV epithelial ovarian cancer are offered durvalumab, tremelimumab plus chemotherapy for neoadjuvant chemotherapy and durvalumab plus chemotherapy for adjuvant chemotherapy. Twenty-four patients will be included from four Korean institutions within 1 year. The primary endpoint is a 12-month PFS rate. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03899610.
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Affiliation(s)
- Jung Yun Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Myong Cheol Lim
- Division of Tumor Immunology and Center for Clinical Trial, Center for Gynecologic Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Sunghoon Kim
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Seung Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | - Sang Yoon Park
- Division of Tumor Immunology and Center for Clinical Trial, Center for Gynecologic Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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11
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Kim YM, Kim BG, Hong YS. Prevalence of measles IgG antibodies among immigrant workers in South Korea. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz186.524] [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] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
After the national vaccination for measles was introduced in 1985, the measles has been controlled in South Korea despite the epidemic in 2000-2001. Current cases in Korea were assumed to be transmitted from outside the country. Because the dynamics and social changes of the population has emerged as important factors in the measles epidemic, this study aimed to assess the prevalence of measles IgG antibodies among immigrant workers.
Methods
The cross sectional seroprevalence survey was conducted in Gyeongsangnamdo province, Korea. Because the representative sampling frame could not be possible, the voluntary foreign workers who have agreed informed consents with a translated format into the native language, participated in this study. IgG antibodies of measles was examined by ELISA using the automation equipment (BEP III- ELISA). This study obtained the approval of Dong-A University Clinical Research Ethics Review Committee.
Results
364 people of foreign workers participated in the study. Regional distribution for study participants was composed of 30 people in Vietnam (16.5%), Uzbekistan 71 people (19.5%), Thailand 70 people (19.2%), China 60 people (16.5%), Philippines 36 people (9.9%), and Indonesia 32 people (8.8%). The average age was 33.0 ± 6.9 years old and 86.5% of the total was men. High school or higher education accounted for 74%. 93.7% showed positivity (95% CI: 95.7-98.9%) for measles IgG antibody and 3.6% showed equivocal.
Conclusions
The measles seropositivity among immigrant workers in Korea was considered to be at the recommended level.
Key messages
The measles seropositivity among immigrant workers in Korea was considered to be at the recommended level. International cooperation is needed to prevent global measles epidemic.
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Affiliation(s)
- Y M Kim
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, South Korea
| | - B G Kim
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, South Korea
| | - Y S Hong
- Department of Preventive Medicine, Dong-A University College of Medicine, Busan, South Korea
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12
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Paik ES, Lee JW, Park JY, Kim JH, Kim M, Kim TJ, Choi CH, Kim BG, Bae DS, Seo SW. Prediction of survival outcomes in patients with epithelial ovarian cancer using machine learning methods. J Gynecol Oncol 2019; 30:e65. [PMID: 31074247 PMCID: PMC6543110 DOI: 10.3802/jgo.2019.30.e65] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 12/11/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES The aim of this study was to develop a new prognostic classification for epithelial ovarian cancer (EOC) patients using gradient boosting (GB) and to compare the accuracy of the prognostic model with the conventional statistical method. METHODS Information of EOC patients from Samsung Medical Center (training cohort, n=1,128) was analyzed to optimize the prognostic model using GB. The performance of the final model was externally validated with patient information from Asan Medical Center (validation cohort, n=229). The area under the curve (AUC) by the GB model was compared to that of the conventional Cox proportional hazard regression analysis (CoxPHR) model. RESULTS In the training cohort, the AUC of the GB model for predicting second year overall survival (OS), with the highest target value, was 0.830 (95% confidence interval [CI]=0.802-0.853). In the validation cohort, the GB model also showed high AUC of 0.843 (95% CI=0.833-0.853). In comparison, the conventional CoxPHR method showed lower AUC (0.668 (95% CI=0.617-0.719) for the training cohort and 0.597 (95% CI=0.474-0.719) for the validation cohort) compared to GB. New classification according to survival probability scores of the GB model identified four distinct prognostic subgroups that showed more discriminately classified prediction than the International Federation of Gynecology and Obstetrics staging system. CONCLUSION Our novel GB-guided classification accurately identified the prognostic subgroups of patients with EOC and showed higher accuracy than the conventional method. This approach would be useful for accurate estimation of individual outcomes of EOC patients.
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Affiliation(s)
- E Sun Paik
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Yeol Park
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Ju Hyun Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Mijung Kim
- Department of Electronics and Information System, Ghent University, Ghent, Belgium
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Wook Seo
- Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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13
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Kim J, Chang Y, Kim TJ, Lee JW, Kim BG, Bae DS, Choi CH. Optimal cutoff age for predicting prognosis associated with serous epithelial ovarian cancer: what is the best age cutoff? J Gynecol Oncol 2018; 30:e11. [PMID: 30479095 PMCID: PMC6304408 DOI: 10.3802/jgo.2019.30.e11] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/19/2018] [Accepted: 09/27/2018] [Indexed: 01/14/2023] Open
Abstract
Objective Elderly age is one of the poor prognostic factors in epithelial ovarian cancer (EOC), but the optimal age cut-off is not known. The present study sought to identify the ideal age cutoff that represents a negative prognostic factor in EOC, considering the geriatric assessment. Methods Hazard ratios (HRs) with p-values were calculated using all possible age cutoffs with stage, histology, grade, optimality and comorbidities as covariates in multivariate Cox regression model. The trends of p-value and HR by age cutoff were further evaluated in a subgroup of histology and in The Cancer Genome Atlas (TCGA) dataset. In addition, propensity score-matching analysis using the identified age cutoff was performed. Results An age of 66 years was shown to be the most significant cutoff for defining old age with independent prognostic power (HR=1.45; 95% confidence interval=1.04–2.03; p=0.027). This result was also observed with the analyses of serous histology subgroup and with the analysis of a TCGA dataset with serous EOC. In survival analysis, patients aged ≥66 years had significantly worse overall survival compared with younger individuals (56 months vs. 87 months; p=0.006), even following propensity score matching (57 vs. 78 months; p=0.038). Conclusion An age of 66 years is the best cutoff to define elderly age in serous EOC patients considering the geriatric assessment, and this information can be used in the administration of individualized therapies in elderly EOC patients.
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Affiliation(s)
- Jihye Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Youjean Chang
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea.
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14
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Kim BG, Uhm JS, Yang PS, Yu HT, Kim TH, Joung BY, Pak HN, Kim SY, Kim MS, Lee JG, Paik HC, Lee MH. P2884Clinical significance of postoperative atrial arrhythmias in patients who underwent lung transplantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2884] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- B G Kim
- Inje University, Division of Cardiology, Department of Internal Medicine, Seoul Paik Hospital, Seoul, Korea Republic of
| | - J.-S Uhm
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - P.-S Yang
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - H T Yu
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - T.-H Kim
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - B Y Joung
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - H.-N Pak
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - S Y Kim
- Severance Hospital, Pulmonology, Seoul, Korea Republic of
| | - M S Kim
- Severance Hospital, Pulmonology, Seoul, Korea Republic of
| | - J G Lee
- Severance Hospital, Thoracic and Cardiovascular Surgery, Seoul, Korea Republic of
| | - H C Paik
- Severance Hospital, Thoracic and Cardiovascular Surgery, Seoul, Korea Republic of
| | - M.-H Lee
- Severance Hospital, Cardiology, Seoul, Korea Republic of
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15
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Paik ES, Kim JH, Kim TJ, Lee JW, Kim BG, Bae DS, Choi CH. Prognostic significance of normal-sized ovary in advanced serous epithelial ovarian cancer. J Gynecol Oncol 2018; 29:e13. [PMID: 29185271 PMCID: PMC5709523 DOI: 10.3802/jgo.2018.29.e13] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 08/09/2017] [Revised: 10/18/2017] [Accepted: 10/20/2017] [Indexed: 12/18/2022] Open
Abstract
Objective We compared survival outcomes of advanced serous type epithelial ovarian cancer (EOC) patients with normal-sized ovaries and enlarged-ovarian tumors by propensity score matching analysis. Methods The medical records of EOC patients treated at Samsung Medical Center between 2002 and 2015 were reviewed retrospectively. We investigated EOC patients with high grade serous type histology and International Federation of Gynecology and Obstetrics (FIGO) stage IIIB, IIIC, or IV who underwent primary debulking surgery (PDS) and adjuvant chemotherapy to identify patients with normal-sized ovaries. Propensity score matching was performed to compare patients with normal-sized ovaries to patients with enlarged-ovarian tumors (ratio, 1:3) according to age, FIGO stage, initial cancer antigen (CA)-125 level, and residual disease status after PDS. Results Of the 419 EOC patients, 48 patients had normal-sized ovary. Patients with enlarged-ovarian tumor were younger (54.0±10.3 vs. 58.4±9.2 years, p=0.005) than those with normal-sized ovary, and there was a statistically significant difference in residual disease status between the 2 groups. In total cohort with a median follow-up period of 43 months (range, 3–164 months), inferior overall survival (OS) was shown in the normal-sized ovary group (median OS, 71.2 vs. 41.4 months; p=0.003). After propensity score matching, the group with normal-sized ovary showed inferior OS compared to the group with enlarged-ovarian tumor (median OS, 72.1 vs. 41.4 months; p=0.031). In multivariate analysis for OS, normal-sized ovary remained a significant factor. Conclusion Normal-sized ovary was associated with poor OS compared with the common presentation of enlarged ovaries in EOC, independent of CA-125 level or residual disease.
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Affiliation(s)
- E Sun Paik
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Hye Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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16
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Jang JYA, Yanaihara N, Pujade-Lauraine E, Mikami Y, Oda K, Bookman M, Ledermann J, Shimada M, Kiyokawa T, Kim BG, Matsumura N, Kaku T, Kuroda T, Nagayoshi Y, Kawabata A, Iida Y, Kim JW, Quinn M, Okamoto A. Update on rare epithelial ovarian cancers: based on the Rare Ovarian Tumors Young Investigator Conference. J Gynecol Oncol 2018; 28:e54. [PMID: 28541641 PMCID: PMC5447152 DOI: 10.3802/jgo.2017.28.e54] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 03/02/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 02/08/2023] Open
Abstract
There has been significant progress in the understanding of the pathology and molecular biology of rare ovarian cancers, which has helped both diagnosis and treatment. This paper provides an update on recent advances in the knowledge and treatment of rare ovarian cancers and identifies gaps that need to be addressed by further clinical research. The topics covered include: low-grade serous, mucinous, and clear cell carcinomas of the ovary. Given the molecular heterogeneity and the histopathological rarity of these ovarian cancers, the importance of designing adequately powered trials or finding statistically innovative ways to approach the treatment of these rare tumors has been emphasized. This paper is based on the Rare Ovarian Tumors Conference for Young Investigators which was presented in Tokyo 2015 prior to the 5th Ovarian Cancer Consensus Conference of the Gynecologic Cancer InterGroup (GCIG).
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Affiliation(s)
- Ji Yon Agnes Jang
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
| | - Nozomu Yanaihara
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan.
| | - Eric Pujade-Lauraine
- Unité Cancer de la Femme et Recherche Clinique, Hôpitaux Universitaires Paris Centre, site Hôtel-Dieu, Université Paris Descartes, Paris, France
| | - Yoshiki Mikami
- Department of Diagnostic Pathology, Kumamoto University Hospital, Kumamoto, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | | | | | - Muneaki Shimada
- Department of Obstetrics and Gynecology, Tottori University School of Medicine, Yonago, Japan
| | - Takako Kiyokawa
- Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan
| | - Byoung Gie Kim
- Gynecologic Cancer Center, Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Noriomi Matsumura
- Department of Obstetrics and Gynecology, Kyoto University, Kyoto, Japan
| | - Tsunehisa Kaku
- Department of Health Sciences, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan
| | - Takafumi Kuroda
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoko Nagayoshi
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
| | - Ayako Kawabata
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
| | - Yasushi Iida
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
| | - Jae Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University, Seoul, Korea
| | - Michael Quinn
- Women's Cancer Research Center, Royal Women's Hospital, Melbourne, Australia
| | - Aikou Okamoto
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan
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Paik ES, Kim TJ, Choi CH, Kim BG, Bae DS, Lee JW. Clinical outcomes of patients with clear cell and endometrioid ovarian cancer arising from endometriosis. J Gynecol Oncol 2017; 29:e18. [PMID: 29400011 PMCID: PMC5823979 DOI: 10.3802/jgo.2018.29.e18] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 07/18/2017] [Revised: 09/13/2017] [Accepted: 11/26/2017] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE The aim of this investigation is to compare outcomes of patients according to the presence of cancer arising from endometriosis in ovarian clear cell carcinoma (CCC) and endometrioid carcinoma (EC). METHODS This study retrospectively investigated 224 CCC and EC patients treated in Samsung Medical Center from 2001 to 2015 to identify cancer arising from endometriosis according to Sampson and Scott criteria. Propensity score matching was performed to compare patients arising from endometriosis to patients without endometriosis (ratio 1:1) according to stage, age, lymph node metastasis (LNM), cancer antigen (CA)-125 level, and residual status after debulking surgery. RESULTS Forty-five cases arising from endometriosis were compared with 179 cases without endometriosis. CCC and EC arising from endometriosis tended to present with early age (mean, 45.2 vs. 49.2 years; p=0.003), early-stage (stages I and II, 92.7% vs. 62.3%; p<0.001), lower CA-125 level (mean, 307.1 vs. 556.7; p=0.041), higher percentages of no gross residual disease after surgery (87.8% vs.56.8%; p=0.001), and higher percentages of negative LNM (82.9% vs. 59.0%; p=0.008) compared to cases without endometriosis. Kaplan-Meier curves for progression-free survival (PFS) and overall survival (OS) showed better outcomes for groups with cancer arising from endometriosis (p=0.014 for PFS; and p=0.010 for OS). However, the association with endometriosis was not significant in multivariate analysis. Also, after propensity score matching, survival differences between the 2 groups were not significant. CONCLUSION CCC and EC arising from endometriosis are diagnosed at an earlier age and stage. However, cancer arising from endometriosis was not a significant prognostic factor.
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Affiliation(s)
- E Sun Paik
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Kim W, Kim BG, Lee JS, Lee CK, Yeon JE, Chang MS, Kim JH, Kim H, Yi S, Lee J, Cho JY, Kim SG, Lee JH, Kim YJ. Randomised clinical trial: the efficacy and safety of oltipraz, a liver X receptor alpha-inhibitory dithiolethione in patients with non-alcoholic fatty liver disease. Aliment Pharmacol Ther 2017; 45:1073-1083. [PMID: 28225186 DOI: 10.1111/apt.13981] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 05/31/2016] [Accepted: 01/22/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Oltipraz is a synthetic dithiolethione with an antisteatotic effect by inhibiting the activity of liver X receptor alpha (LXR-α). Recent studies demonstrated the disruptive role of oltipraz on LXR-α-dependent lipogenesis in hepatocytes and a high-fat diet mouse model. AIM To evaluate the efficacy and safety of oltipraz for reducing liver fat in subjects with non-alcoholic fatty liver disease (NAFLD). METHODS We performed a multicentre, double-blind, placebo-controlled, phase II study. Subjects with a liver fat >20% and hypertransaminasemia were randomised to the three groups: placebo (n = 22), 30 mg of oltipraz (n = 22) or 60 mg of oltipraz (n = 24) twice daily for 24 weeks. Changes in the liver fat from baseline to 24 weeks quantified using magnetic resonance spectroscopy were the primary outcome. RESULTS Compared with the placebo group (-3.2 ± 11.1%), absolute changes in the liver fat content increased in a dose-dependent manner: -7.7 ± 7.0% and -13.9 ± 10.7% for the low-dose and high-dose groups (P = 0.13 and P < 0.01). Per cent reduction in the liver fat content was also significantly greater in the high-dose group than in the placebo group (-34.6 ± 29.4% vs. -0.6 ± 62.9%, P = 0.046). Body mass indices (-1.0 ± 0.9% vs. -0.5 ± 1.4%, P = 0.04) significantly decreased in the high-dose group compared to the placebo group. However, absolute changes in insulin resistance, liver enzymes, lipids and cytokines were not significantly different among groups. The incidence of adverse events was comparable among groups. CONCLUSIONS Twenty-four-week oltipraz treatment significantly reduced the liver fat content in patients with NAFLD. Clinicaltrials.gov (NCT01373554).
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Bhang DH, Choi US, Kim BG, Lee SN, Lee S, Roh HS, Chung WJ, Jeon KO, Song WJ, Youn HY, Baek KH. Characteristics of extracellular cyclic AMP-dependent protein kinase as a biomarker of cancer in dogs. Vet Comp Oncol 2017; 15:1585-1589. [PMID: 28185388 DOI: 10.1111/vco.12304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 08/29/2016] [Revised: 12/20/2016] [Accepted: 12/20/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Early and proper diagnosis of cancer is the most critical factor for the survival and treatment of veterinary cancer patients. In this study, we evaluated extracellular cyclic AMP-dependent protein kinase A (ECPKA) level in serum as a useful cancer biomarker in dogs. METHODS ECPKA levels were detected in sera from dogs with cancers (n = 48), benign tumours (n = 18), and non-tumour diseases (n = 102) as well as healthy control dogs (n = 54) utilizing enzyme-linked immunosorbent assay (ELISA). RESULTS Sera from dogs bearing various types of cancer exhibited markedly increased levels of ECPKA by up to 7.1-, 8.8-, and 10.9-fold compared with those from dogs harbouring benign tumours, dogs with non-tumour diseases, and healthy control dogs, respectively (P < .0001). In addition, serum ECPKA level did not show statistically significant correlation with gender, breed, or age of dogs or their non-cancerous disease conditions. CONCLUSION Our data strongly propose that detection of serum ECPKA level is a potential and specific diagnostic tool for cancer in dogs.
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Affiliation(s)
- D H Bhang
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - U S Choi
- Department of Veterinary Clinical Pathology and Bio-Safety Research Institute, College of Veterinary Medicine, Chonbuk National University, Jeonju, Republic of Korea
| | - B G Kim
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - S-N Lee
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - S Lee
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - H-S Roh
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
| | - W-J Chung
- Ray Veterinary Medical Center, Seoul, Republic of Korea
| | - K O Jeon
- Department of Internal Veterinary Medicine, BK21 Plus Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - W J Song
- Department of Internal Veterinary Medicine, BK21 Plus Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - H-Y Youn
- Department of Internal Veterinary Medicine, BK21 Plus Program for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - K-H Baek
- Department of Molecular and Cellular Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
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Kim BG, Liu Y, Stein HH. Effects of ileal digesta collection time on standardized ileal digestibility of amino acids in corn, soybean meal, and distiller's dried grains with solubles fed to growing pigs. J Anim Sci 2017; 95:789-798. [PMID: 28380619 DOI: 10.2527/jas.2016.1082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this experiment was to determine the minimum collection time needed to obtain representative samples of ileal digesta from pigs fed different types of diets. Eight barrows with an initial BW of 34.6 kg (SD 2.1) were individually fitted with a T-cannula in the distal ileum and randomly allotted to a replicated 4 × 4 Latin square design with 4 diets and 4 periods per square. Three diets contained corn, soybean meal (SBM), or distiller's dried grains with solubles (DDGS) as the sole source of CP. An N-free diet was also prepared. All diets contained 0.5% chromic oxide as an indigestible marker. Equal meals were provided at 0800 and 2000 h. Ileal digesta samples were collected in 2-h intervals from 0800 to 2000 h during the last 3 d of each 7-d period. When pigs were fed the corn diet, the standardized ileal digestibility (SID) of most indispensable AA and dispensable AA increased and then decreased (quadratic, < 0.05) during each of the six 2-h periods. The SID of most AA were less ( < 0.05) if the ileal digesta samples were collected from 1800 to 2000 h or from 1600 to 2000 h compared with the SID values from the ileal samples collected over the entire 12-h period. When pigs were fed the SBM diet, the SID of Ile, Leu, Thr, Trp, Val, Ala, and Cys increased and then decreased (quadratic, < 0.05) but the SID of all other AA linearly decreased ( < 0.05) during the six 2-h periods. The SID of almost all AA were greater ( < 0.05) if the ileal samples were collected from 0800 to 1000 h, from 0800 to 1200 h, from 1000 to 1400 h, or from 0800 to 1400 h but less ( < 0.05) if collected from 1600 to 1800 h, from 1800 to 2000 h, from 1600 to 2000 h, or from 1400 to 2000 h compared with the SID values from the ileal samples collected over the entire 12-h period. When pigs were fed the DDGS-based diet, the SID of Ile, Leu, Lys, Phe, Trp, Val, and Tyr increased and then decreased (quadratic, < 0.05) during the six 2-h periods. The SID of most AA were less ( < 0.05) if the ileal samples were collected from 1800 to 2000 h compared with the SID values from the ileal samples collected over the entire 12-h period. In conclusion, diurnal variations in SID of AA in pigs indicate that 6 h of ileal sample collection starting 4 or 6 h after feeding may provide representative samples of ileal digesta from pigs fed different types of diets.
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Nam SH, Choi HJ, Kang WD, Kim SM, Lim MC, Park SY, Kim JS, Kim BG, Bae DS, Lee JW, Kim TJ, Song T. Development and Validation of the Korean Version of Hand-Foot Skin Reaction and Quality of Life Questionnaire (HF-QoL-K). J Korean Med Sci 2016; 31:1969-1975. [PMID: 27822937 PMCID: PMC5102862 DOI: 10.3346/jkms.2016.31.12.1969] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/21/2016] [Indexed: 11/22/2022] Open
Abstract
Given the growing number of cancer patients and the resulting increase in the administration of chemotherapeutic agents, convenient and effective methods for measuring the symptoms and quality of life associated with the hand-foot syndrome (HFS) are needed. Therefore, the aim of this study was to develop and validate the Korean version of the hand-foot skin reaction and quality of life questionnaire (HF-QoL-K), comprising a 20-item symptom domain and an 18-item daily activity domain. After we developed the HF-QoL-K, 209 Korean patients with gynecologic cancer who were undergoing chemotherapeutic agents relating the HFS were asked to fill in the questionnaire. The content validity, internal consistency reliability, and test-retest reliability were evaluated. The internal validity index, Cronbach's alpha coefficient, and intra-class correlation coefficient of the HF-QoL-K were 0.90, 0.958, and 0.825 (95% confidence interval [CI], 0.774-0.865), respectively. The scatter plot (Pearson correlation coefficient, 0.826) and the Bland-Altman plot for test-retest reliability were also acceptable. The HF-QoL-K instrument is a valid and reliable questionnaire for the measurement of the symptoms and quality of life in Korean cancer patients suffering HFS.
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Affiliation(s)
- Se Hyun Nam
- Department of Obstetrics and Gynecology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyun Jin Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Woo Dae Kang
- Department of Obstetrics and Gynecology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Seok Mo Kim
- Department of Obstetrics and Gynecology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Myong Cheol Lim
- Gynecologic Cancer Branch and Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Sang Yoon Park
- Gynecologic Cancer Branch and Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Jung Sup Kim
- Korean Language and Literature, Kyung Hee University, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Taejong Song
- Department of Obstetrics and Gynecology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Chang HK, Kim BG, Shi TY, Zang R. The 5th Shanghai Gynecologic Oncology Group (SGOG)-Korean Gynecologic Oncology Group (KGOG) joint meeting and 2016 Asia-Pacific Ovarian cancer Laparotomy and Laparoscopic Operation (APOLLO) symposium in Shanghai. J Gynecol Oncol 2016; 27:e64. [PMID: 27775260 PMCID: PMC5078826 DOI: 10.3802/jgo.2016.27.e64] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 08/08/2016] [Indexed: 11/30/2022] Open
Affiliation(s)
- Ha Kyun Chang
- Department of Obstetrics and Gynecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ting Yan Shi
- Department of Obstetrics and Gynecology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Rongyu Zang
- Department of Obstetrics and Gynecology, Zhongshan Hospital, Fudan University, Shanghai, China.
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Kim BG, Liu Y, Stein HH. Effects of collection time on flow of chromium and dry matter and on basal ileal endogenous losses of amino acids in growing pigs. J Anim Sci 2016; 94:4196-4204. [PMID: 27898860 DOI: 10.2527/jas.2015-0248] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
The objectives of this experiment were to examine the diurnal patterns of chromium and DM flow at the distal ileum of pigs and to determine the effect of collection time on basal ileal endogenous losses (BEL) of CP and AA. Eight barrows with an initial BW of 34.6kg (SD = 2.1) were individually fitted with a T-cannula in the distal ileum and randomly allotted to a replicated 4× 4 Latin square design with 4 diets and 4 periods in each square. Three diets contained either corn, soybean meal, or distillers dried grains with solubles as the sole source of CP and AA. An N-free diet was also prepared. All diets contained 0.5% chromic oxide as an indigestible marker. Equal meals were provided at 0800 and 2000 h. Ileal digesta samples were collected in 2-h intervals from 0800 to 2000 h during the last 3 d of each 7-d period. The concentration of Cr in ileal digesta samples collected in each of the six 2-h periods exhibited a quadratic effect ( < 0.01) that increased and then decreased in pigs fed the CP containing diets. However, the concentration of Cr in ileal digesta collected in each of the six 2-h periods from pigs fed the N-free diet increased (linear, < 0.01). These differences were possibly related to differences in DM flow, because DM flow to the distal ileum had a pattern that was opposite of that observed for the concentration of Cr in the ileal digesta samples. The BEL of all indispensable AA and the sum of indispensable AA from pigs fed the N-free diet decreased (linear, < 0.05) in each of the six 2-h periods, with the exception that the BEL of Arg increased and then decreased (quadratic, < 0.05). The BEL of Asp, Cys, Glu, Ser, and Tyr also decreased (linear, < 0.05) during each of the six 2-h periods, whereas the BEL of Pro and the sum of dispensable AA increased and then decreased (quadratic, < 0.05) over the 12 h. Collection time did not affect BEL of CP. No differences were observed in the concentration of Cr, flow of DM, or basal endogenous loss of all AA if ileal digesta samples were collected over 6-, 8-, or 10-h periods, compared with collection over a 12-h period. In conclusion, diurnal variation of Cr concentration, DM flow, and the BEL of all AA were observed, but 4 to 6 h of ileal sample collection starting 4 or 6 h after feeding may provide representative samples that allow for calculation of accurate values for CP and AA digestibility.
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Lee SA, Kong C, Adeola O, Kim BG. Different Coefficients and Exponents for Metabolic Body Weight in a Model to Estimate Individual Feed Intake for Growing-finishing Pigs. Asian-Australas J Anim Sci 2016; 29:1756-1760. [PMID: 27608642 PMCID: PMC5088424 DOI: 10.5713/ajas.16.0420] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/03/2016] [Accepted: 08/11/2016] [Indexed: 11/27/2022]
Abstract
Estimation of feed intake (FI) for individual animals within a pen is needed in situations where more than one animal share a feeder during feeding trials. A partitioning method (PM) was previously published as a model to estimate the individual FI (IFI). Briefly, the IFI of a pig within the pen was calculated by partitioning IFI into IFI for maintenance (IFIm) and IFI for growth. In the PM, IFIm is determined based on the metabolic body weight (BW), which is calculated using the coefficient of 106 and exponent of 0.75. Two simulation studies were conducted to test the hypothesis that the use of different coefficients and exponents for metabolic BW to calculate IFIm improves the accuracy of the estimates of IFI for pigs, and that PM is applied to pigs fed in group-housing systems. The accuracy of prediction represented by difference between actual and estimated IFI was compared using PM, ratio (RM), or averaging method (AM). In simulation studies 1 and 2, the PM estimated IFI better than the AM and RM during most of the periods (p<0.05). The use of 0.60 as the exponent and the coefficient of 197 to calculate metabolic BW did not improve the accuracy of the IFI estimates in both simulation studies 1 and 2. The results imply that the use of 197 kcal×kg BW0.60 as metabolizable energy for maintenance in PM does not improve the accuracy of IFI estimations compared with the use of 106 kcal×kg BW0.75 and that the PM estimates the IFI of pigs with greater accuracy compared with the averaging or ratio methods in group-housing systems.
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Affiliation(s)
- S A Lee
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
| | - C Kong
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
| | - O Adeola
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
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Park CS, Kim BG. In vitro Solubility of Copper(II) Sulfate and Dicopper Chloride Trihydroxide for Pigs. Asian-Australas J Anim Sci 2016; 29:1608-1615. [PMID: 27456425 PMCID: PMC5088381 DOI: 10.5713/ajas.16.0189] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 03/29/2016] [Accepted: 07/01/2016] [Indexed: 11/27/2022]
Abstract
This study was conducted to determine the solubility of copper (Cu) in two sources of copper(II) sulfate (CuSO4) including monohydrate and pentahydrate and three sources of dicopper chloride trihydroxide (dCCTH) including α-form (dCCTH-α), β-form (dCCTH-β), and a mixture of α- and β-form (dCCTH-αβ) at different pH and a 3-step in vitro digestion assay for pigs. In Exp. 1, Cu sources were incubated in water-based buffers at pH 2.0, 3.0, 4.8, and 6.8 for 4 h using a shaking incubator at 39°C. The CuSO4 sources were completely dissolved within 15 min except at pH 6.8. The solubility of Cu in dCCTH-α was greater (p<0.05) than dCCTH-β but was not different from dCCTH-αβ during 3-h incubation at pH 2.0 and during 2-h incubation at pH 3.0. At pH 4.8, there were no significant differences in solubility of Cu in dCCTH sources. Copper in dCCTH sources were non-soluble at pH 6.8. In Exp. 2, the solubility of Cu was determined during the 3-step in vitro digestion assay for pigs. All sources of Cu were completely dissolved in step 1 which simulated digestion in the stomach. In Exp. 3, the solubility of Cu in experimental diets including a control diet and diets containing 250 mg/kg of additional Cu from five Cu sources was determined during the in vitro digestion assay. The solubility of Cu in diets containing additional Cu sources were greater (p<0.05) than the control diet in step 1. In conclusion, the solubility of Cu was influenced by pH of digesta but was not different among sources based on the in vitro digestion assay.
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Affiliation(s)
- C S Park
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
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Kim BG, Yoo TH, Yoo JE, Seo YJ, Jung J, Choi JY. Resistance to hypertension and high Cl - excretion in humans with SLC26A4 mutations. Clin Genet 2016; 91:448-452. [PMID: 27090054 DOI: 10.1111/cge.12789] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 01/15/2016] [Revised: 04/12/2016] [Accepted: 04/14/2016] [Indexed: 10/21/2022]
Abstract
Pendrin is a membrane transporter encoded by solute carrier family26A4 (SLC26A4). Mutations in this gene are known to cause hearing loss, and recent data from animal studies indicate a link between pendrin expression and hypertension; although, this association in humans is unclear. To clarify this issue, we investigated the influence of pendrin on blood pressure by analyzing demographic and biochemical data - including blood pressure and urinary electrolyte excretion - in patients with bi-allelic SLC26A4 mutations. Systolic and diastolic blood pressure and the left ventricular hypertrophy index were lower in subjects with pendrin mutations than in controls. In addition, fractional excretion of Na+ and Cl- was increased and serum renin, angiotensin I and II levels were higher in subjects with pendrin mutations as compared to controls. Thus, patients with impaired pendrin function are likely to be resistant to high blood pressure due to enhanced urinary Na+ /Cl- excretion. These results suggest that pendrin may regulate blood pressure through increased urinary salt excretion.
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Affiliation(s)
- B G Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang University, College of Medicine, Bucheon, Korea
| | - T-H Yoo
- Department of Internal Medicine, Yonsei University, College of Medicine, Seoul, Korea
| | - J-E Yoo
- Department of Otorhinolaryngology, Yonsei University, College of Medicine, Seoul, Korea
| | - Y J Seo
- Department of Otorhinolaryngology, Yonsei University, WonJu College of Medicine, Wonju, Korea
| | - J Jung
- Department of Otorhinolaryngology, Yonsei University, College of Medicine, Seoul, Korea
| | - J Y Choi
- Department of Otorhinolaryngology, Yonsei University, College of Medicine, Seoul, Korea
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Paik ES, Kim TJ, Lee YY, Choi CH, Lee JW, Kim BG, Bae DS. Comparison of survival outcomes after recurrence detected by cancer antigen 125 elevation versus imaging study in epithelial ovarian cancer. J Gynecol Oncol 2016; 27:e46. [PMID: 27329194 PMCID: PMC4944013 DOI: 10.3802/jgo.2016.27.e46] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 02/14/2016] [Revised: 04/14/2016] [Accepted: 04/28/2016] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE The aim of this study was to compare survival outcomes in two groups of patients with recurrent epithelial ovarian cancer (EOC) with initial recurrence detection by cancer antigen 125 (CA-125) elevation or imaging, and underwent secondary cytoreductive surgery (SCS). METHODS A retrospective review of the medical records was performed on 99 recurrent EOC patients who underwent SCS at the Samsung Medical Center between January 2002 and December 2013. For follow-up after primary treatment, patients were routinely assessed by CA-125 levels every 3 months and computed tomography (CT) scan (or magnetic resonance imaging [MRI]) every 6 months for first 3 years, and by CA-125 every 6 months and CT scan (or MRI) every 12 months thereafter. RESULTS The first recurrence was initially identified by either CA-125 elevation (n=41, 41.4%) or by imaging study (n=58, 58.6%). None of the patients showed the symptoms as initial sign of recurrence. There were higher percentages of extra-pelvic recurrence (87.8%) and multiple recurrences (78.0%) in the group diagnosed by CA-125 elevation. The proportion of no residual disease after SCS was comparably lower in the CA-125 group (22.0% vs. 72.4%). There were 19 cancer-associated deaths (19.2%) within a median follow-up period of 67 months. The group diagnosed by imaging had better overall survival from initial diagnosis (OS1), overall survival after SCS (OS2), progression-free survival after the initial treatment (PFS1) and progression-free survival after SCS compared to those of the CA-125 group (PFS2). CONCLUSION EOC patients with recurrence initially detected by imaging study showed better survival outcomes than patients diagnosed by CA-125 elevation.
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Affiliation(s)
- E Sun Paik
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Choi HJ, Lee S, Park BK, Kim TJ, Kim CK, Park JJ, Choi CH, Lee YY, Lee JW, Bae DS, Kim BG. Long-term outcomes of magnetic resonance imaging-invisible endometrial cancer. J Gynecol Oncol 2016; 27:e38. [PMID: 27102247 PMCID: PMC4864514 DOI: 10.3802/jgo.2016.27.e38] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/08/2016] [Accepted: 03/27/2016] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE Magnetic resonance imaging (MRI) is useful for staging endometrial cancer. The treatment and prognosis of MRI-invisible endometrial cancer remain unclear. The purpose of this study was to retrospectively evaluate the long-term outcomes of patients with MRI-invisible endometrial cancer. METHODS Between February 1995 and December 2011, we reviewed the medical records of 433 patients with endometrial cancer, which was staged IA on MRI. Of these patients, 89 had MRI-invisible cancer and 344 had MRI-visible cancer. Both cancers were treated with simple hysterectomy with or without lymph node dissection according to the surgeon's decision. Both cancers were compared regarding pathologic findings, recurrence rates, and survival rates. RESULTS The median sizes of MRI-invisible and MRI-visible cancers were 4 mm (0 to 40 mm) and 20 mm (0 to 89 mm), respectively (p<0.001). Myometrial invasion of these groups were detected in 20.2% (18/89) and 56.7% (195/344), respectively (p<0.001). Lymphadenectomy and follow-up imaging revealed no lymph node metastasis in patients with MRI-invisible cancers, while those revealed in 4.7% (16/344) of patients with MRI-visible cancers (p=0.052). The recurrence rates of MRI-invisible and MRI-visible cancers were 1.1% (1/89) and 7.8% (27/344), respectively (p=0.026). The recurrence-free survival rates of these groups were 98.9% (88/89) and 91.6% (315/344), respectively (p=0.022). CONCLUSION MRI-invisible endometrial cancer can be treated with less invasive surgery because of its lower tumor burden and better prognosis. This cancer may not require lymphadenectomy because of no metastasis or recurrence in lymph nodes.
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Affiliation(s)
- Hyun Jin Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sunyoung Lee
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung Kwan Park
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chan Kyo Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Jae Park
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Park SJ, Kim BG, Oh AH, Han SH, Han HS, Ryu JH. Effects of intraoperative protective lung ventilation on postoperative pulmonary complications in patients with laparoscopic surgery: prospective, randomized and controlled trial. Surg Endosc 2016; 30:4598-606. [PMID: 26895920 DOI: 10.1007/s00464-016-4797-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 02/03/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Respiratory functions are usually impaired during pneumoperitoneum for laparoscopic surgery. This randomized, controlled and single-blinded study was performed to evaluate whether intraoperative protective lung ventilation influences postoperative pulmonary complications after laparoscopic hepatobiliary surgery. METHODS Sixty-two patients were randomized to receive either conventional ventilation with alveolar recruitment maneuver (tidal volume of 10 ml/kg with inspiratory pressure of 40 cmH2O for 30 s after the end of pneumoperitoneum, group R), or protective lung ventilation (low tidal volume of 6 ml/kg with positive end-expiratory pressure [PEEP] of 5 cmH2O, group P). Induction and maintenance of anesthesia were done with balanced anesthesia. Respiratory complications such as atelectasis, pneumonia or desaturation were observed postoperatively. The length of hospital stay, arterial blood gas analysis, peak inspiratory pressure and hemodynamic variables were also recorded. Results are presented as mean ± SD or number of patients (%). RESULTS Postoperative pulmonary complications (P = 0.023) and desaturation below 90 % (P = 0.016) occurred less frequently in group P than in group R. Eight patients of group R and 3 patients of group P showed atelectasis. Pneumonia was diagnosed in 1 patient of group R. No differences were observed in the length of hospital stay, arterial blood gas analysis (pH, PaO2, PaCO2 and PAO2) and hemodynamic variables except PAO2, AaDO2 and peak inspiratory pressure between the two groups. CONCLUSION Protective lung ventilation (low tidal volume with PEEP) during pneumoperitoneum was associated with less incidences of pulmonary complications than conventional ventilation with alveolar recruitment maneuver after laparoscopic hepatobiliary surgery.
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Affiliation(s)
- S J Park
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Gumiro-Gil 173, Bundang-gu, Seong-Nam Si, Seoul, 13620, South Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea
| | - B G Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Gumiro-Gil 173, Bundang-gu, Seong-Nam Si, Seoul, 13620, South Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea
| | - A H Oh
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Gumiro-Gil 173, Bundang-gu, Seong-Nam Si, Seoul, 13620, South Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea
| | - S H Han
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Gumiro-Gil 173, Bundang-gu, Seong-Nam Si, Seoul, 13620, South Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea
| | - H S Han
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea
| | - J H Ryu
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Gumiro-Gil 173, Bundang-gu, Seong-Nam Si, Seoul, 13620, South Korea.
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam-Si, Gyeonggi-do, South Korea.
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Lee JY, Kim K, Lee TS, Kang S, Seong SJ, Kim JW, Kim BG. Controversies in the management of endometrial cancer: a survey of the Korean Gynecologic Oncology Group. J Gynecol Oncol 2015; 26:277-83. [PMID: 26404123 PMCID: PMC4620364 DOI: 10.3802/jgo.2015.26.4.277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 06/07/2015] [Revised: 07/14/2015] [Accepted: 07/21/2015] [Indexed: 11/30/2022] Open
Abstract
Objective To identify current practice patterns for unresolved issues in the surgical and adjuvant management of endometrial cancer in Korea. Methods We designed and conducted a survey of all 218 active members of the Korean Gynecologic Oncology Group to try to identify how they would manage various case scenarios for endometrial cancer. Data were collected using an Internet survey database. Results A total of 108 members (49.5%) responded to the survey. Laparoscopy (81.6%) was the most commonly used mode of surgery in early-stage endometrial cancer. Of all the respondents, 19.8% stated that lymphadenectomy could be omitted and 21.7% recommended selective lymphadenectomy based on sentinel biopsy or frozen results for patients with presumed stage IA/grade 1 disease. On the other hand, 71.9% of respondents recommended para-aortic lymphadenectomy for patients with presumed stage IB/grade 1 disease and 86.4% recommended this treatment for presumed stage IB/grade 3 disease. The majority of respondents performed adjuvant therapy for stage IB/grade 2 (91.7%), IB/grade 3 (99.0%), and stage II (89.6%). Whole pelvic radiotherapy and vaginal brachytherapy were the most frequently used options among these patients. All respondents administered adjuvant therapy when node metastasis was found, and concurrent chemoradiotherapy (53.2%) was the most preferred option for stage IIIC1 disease. Conclusion There is broad variation in both the surgical and adjuvant treatment of endometrial cancer among Korean gynecologic oncologists.
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Affiliation(s)
- Jung Yun Lee
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Kidong Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Taek Sang Lee
- Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
| | - Sokbom Kang
- Center for Uterine Cancer, National Cancer Center, Goyang, Korea
| | - Seok Ju Seong
- Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea
| | - Jae Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Park JY, Ngan HYS, Park W, Cao Z, Wu X, Ju W, Chung HH, Chang SJ, Park SY, Ryu SY, Kim JH, Cho CH, Lee KH, Lee JW, Kumarasamy S, Kim JW, Wilailak S, Kim BG, Kim DY, Konishi I, Lee JK, Wang KL, Nam JH. Asian Society of Gynecologic Oncology International Workshop 2014. J Gynecol Oncol 2015; 26:68-74. [PMID: 25609163 PMCID: PMC4302288 DOI: 10.3802/jgo.2015.26.1.68] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 12/13/2014] [Indexed: 01/05/2023] Open
Abstract
The Asian Society of Gynecologic Oncology International Workshop 2014 on gynecologic oncology was held in Asan Medical Center, Seoul, Korea on the 23rd to 24th August 2014. A total of 179 participants from 17 countries participated in the workshop, and the up-to-date findings on the management of gynecologic cancers were presented and discussed. This meeting focused on the new trends in the management of cervical cancer, fertility-sparing management of gynecologic cancers, surgical management of gynecologic cancers, and recent advances in translational research on gynecologic cancers.
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Affiliation(s)
- Jeong Yeol Park
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hextan Yuen Sheung Ngan
- Department of Obstetrics and Gynecology, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Won Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Zeyi Cao
- Obstetrics and Gynecology Center, Tsinghua University School of Medicine, Beijing, China
| | - Xiaohua Wu
- Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Woong Ju
- Department of Obstetrics and Gynecology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hyun Hoon Chung
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Suk Joon Chang
- Gynecologic Cancer Center, Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon, Korea
| | - Sang Yoon Park
- Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - Sang Young Ryu
- Department of Obstetrics and Gynecology, Korea Cancer Center Hospital, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Jae Hoon Kim
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Chi Heum Cho
- Department of Obstetrics and Gynecology, Keimyung University School of Medicine, Daegu, Korea
| | - Keun Ho Lee
- Department of Obstetrics and Gynecology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | - Jae Weon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Sarikapan Wilailak
- Department of Obstetrics and Gynecology, Ramathibodi Hospital, Mahidol University Faculty of Medicine, Bangkok, Thailand
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dae Yeon Kim
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ikuo Konishi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Jae Kwan Lee
- Department of Obstetrics and Gynecology, Korea University Medical Center, Seoul, Korea
| | - Kung Liahng Wang
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Mackay Medical College, Taipei, Taiwan.; Department of Nursing, Mackay Junior College of Medicine Nursing, and Management, Taipei, Taiwan
| | - Joo Hyun Nam
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Yoo HN, Kim TJ, Lee YY, Choi CH, Lee JW, Bae DS, Kim BG. Single-site robotic surgery in gynecologic cancer: a pilot study. J Gynecol Oncol 2015; 26:62-7. [PMID: 25609162 PMCID: PMC4302287 DOI: 10.3802/jgo.2015.26.1.62] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 11/13/2014] [Revised: 12/02/2014] [Accepted: 12/09/2014] [Indexed: 11/30/2022] Open
Abstract
Objective To discuss the feasibility of single-site robotic surgery for benign gynecologic tumors and early stage gynecologic cancers. Methods In this single institution, prospective analysis, we analyzed six patients who had undergone single-site robotic surgery between December 2013 and August 2014. Surgery was performed using the da Vinci Si Surgical System. Patient characteristics and surgical outcomes were analyzed. Results Single-site robotic surgery was performed successfully in all six cases. The median patient age was 48 years, and the median body mass index was 25.5 kg/m2 (range, 22 to 33 kg/m2). The median total operative time was 211 minutes, and the median duration of intracorporeal vaginal cuff suturing was 32 minutes (range, 22 to 47 minutes). The median duration of pelvic lymph node dissection was 31 minutes on one side and 27 minutes on the other side. Patients' postoperative courses were uneventful. The median postoperative hospital stay was 4 days. No postoperative complications occurred. Conclusion When used to treat benign gynecologic tumors and early stage gynecologic cancers, the single-site da Vinci robotic surgery is feasible, safe, and produces favorable surgical outcomes.
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Affiliation(s)
- Ha Na Yoo
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kim TJ, Yoon G, Lee YY, Choi CH, Lee JW, Bae DS, Kim BG. Robotic high para-aortic lymph node dissection with high port placement using same port for pelvic surgery in gynecologic cancer patients. J Gynecol Oncol 2015. [PMID: 26197858 PMCID: PMC4510339 DOI: 10.3802/jgo.2015.26.3.222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] [Indexed: 02/06/2023] Open
Abstract
Objective This study reports our initial experience of robotic high para-aortic lymph node dissection (PALND) with high port placement using same port for pelvic surgery in cervical and endometrial cancer patients. Methods Between July 2013 and January 2014, we performed robotic high PALND up to the left renal vein during staging surgeries. With high port placement and same port usage for pelvic surgery, high PALND was successfully performed without repositioning the robotic column. All data were registered consecutively and analyzed retrospectively. Results All patients successfully underwent robotic high PALND, followed by hysterectomy and pelvic lymph node dissection. Median age was 45 years (range, 39 to 51 years) and median body mass index was 22 kg/m2 (range, 19.3 to 23.1 kg/m2). Median operative time for right PALND and left PALND was 37 minutes (range, 22 to 65 minutes) and 44 minutes (range, 36 to 50 minutes), respectively. Median number of right and left para-aortic lymph node by pathologic report was 12 (range, 8 to 15) and 13 (range, 5 to 26). Conclusion With high port placement and one assistant port, robotic high PALND with the same port used in pelvic surgery is feasible to non-obese patients.
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Affiliation(s)
- Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Gun Yoon
- Department of Obstetrics and Gynecology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chel Hun Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Abstract
OBJECTIVE The aim of this study was to investigate outcomes in uterine cancer patients undergoing pulmonary metastasectomy and prognostic factors associated with survival after the procedure. METHODS A retrospective study was performed in 29 uterine cancer patients who underwent surgical resection of pulmonary metastatic lesions at Samsung Medical Center between June 1995 and December 2011. RESULTS Histopathology showed carcinoma in 17 patients (58.6%) and sarcoma in 12 patients (41.4%). Of the 29 patients, 17 (58.6%) had less than three pulmonary metastatic lesions. Eight (27.6%) had symptoms related to lung metastasis. The 5-year survival rate after pulmonary metastasectomy for the entire cohort was 48.2%. On univariate and multivariate analysis, the presence of pulmonary symptoms and more than three lesions of metastasis were associated with poor survival after pulmonary metastasectomy. CONCLUSION Pulmonary metastasectomy for uterine cancer is an acceptable treatment in selected patients. Patients with more than three pulmonary metastatic lesions and pulmonary symptoms related to lung metastasis could expect to have worse prognosis after pulmonary metastasectomy.
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Affiliation(s)
- E Sun Paik
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Aera Yoon
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yoo Young Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Joong Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duk Soo Bae
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Choi JY, Cui Y, Kim BG. Interaction between hypertension and cerebral hypoperfusion in the development of cognitive dysfunction and white matter pathology in rats. Neuroscience 2015; 303:115-25. [PMID: 26143013 DOI: 10.1016/j.neuroscience.2015.06.056] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Revised: 06/03/2015] [Accepted: 06/26/2015] [Indexed: 11/19/2022]
Abstract
Hypertension is the most significant modifiable risk factor for vascular cognitive impairment. However, influence of hypertension on the development of ischemic white matter injury and cognitive dysfunction is not fully understood. We compared cognitive functions and neuropathological outcomes of chronic cerebral hypoperfusion induced by bilateral common carotid artery occlusion (BCCAO) between normotensive rats (NRs) and spontaneously hypertensive rats (SHRs). SHRs developed earlier and more severe deficits in spatial memory performance than NRs following BCCAO. Although no significant changes in the gross structure of myelinated white matter or oligodendrocyte number were noted, BCCAO resulted in subtle myelin degeneration and paranodal structural alterations at the nodes of Ranvier, regardless of hypertension. Disruption of the blood-brain barrier (BBB) was predominantly observed in the white matter of SHRs following BCCAO, implying a role of hypertension in BBB dysfunction in chronic cerebral hypoperfusion. In chronic cerebral ischemia, long-standing hypertension may aggravate impairment of BBB integrity, and the leaky BBB may in turn exacerbate dysfunction in the white matter leading to worsening of spatial cognitive performance.
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Affiliation(s)
- J Y Choi
- Department of Brain Science, Ajou University School of Medicine, South Korea; Department of Neurology, Ajou University School of Medicine, South Korea; Department of Biomedical Sciences, Ajou University Graduate School of Medicine, South Korea
| | - Y Cui
- Department of Brain Science, Ajou University School of Medicine, South Korea; Department of Biomedical Sciences, Ajou University Graduate School of Medicine, South Korea
| | - B G Kim
- Department of Brain Science, Ajou University School of Medicine, South Korea; Department of Neurology, Ajou University School of Medicine, South Korea; Department of Biomedical Sciences, Ajou University Graduate School of Medicine, South Korea.
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Kwon WB, Kim BG. Effects of Supplemental Beta-mannanase on Digestible Energy and Metabolizable Energy Contents of Copra Expellers and Palm Kernel Expellers Fed to Pigs. Asian-Australas J Anim Sci 2015; 28:1014-9. [PMID: 26104407 PMCID: PMC4478493 DOI: 10.5713/ajas.15.0275] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 04/20/2015] [Accepted: 04/25/2015] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to determine the effect of β-mannanase supplementation on digestible energy (DE) and metabolizable energy (ME) contents of copra expellers (CE) and palm kernel expellers (PKE) fed to pigs. Six barrows with an initial body weight of 38.0 kg (standard deviation = 1.5) were randomly allotted to a 6×6 Latin square design with 6 dietary treatments and 6 periods. Six experimental diets were prepared in a 3×2 factorial treatment arrangement with 3 diets of a corn-soybean meal-based diet, a CE 30% diet, and a PKE 30% diet and with 2 concentrations of supplemental β-mannanase at 0 or 2,400 U/kg. All diets had the same proportion of corn:soybean meal ratio at 2.88:1. The marker-to-marker procedure was used for fecal and urine collection with 4-d adaptation and 5-d collection periods. No interactive effects were observed between diet and β-mannanase on energy digestibility and DE and ME contents of experimental diets. However, diets containing CE or PKE had less (p<0.05) DE and ME contents compared with the corn-soybean meal-based diet. The DE and ME contents in CE and PKE were not affected by supplemental β-mannanase. Taken together, we failed to find the effect of β-mannanase supplementation on energy utilization in CE and PKE fed to pigs.
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Basen-Engquist K, Huang HQ, Herzog TJ, Armstrong DK, Sabbatini P, Walker JL, Kim BG, Fujiwara K, Tewari KS, O'Malley DM, Coleman RL. Randomized phase III trial of carboplatin/paclitaxel alone (CP) or in combination with bevacizumab followed by bevacizumab (CPB) and secondary cytoreduction surgery in platinum-sensitive recurrent ovarian cancer: GOG0213, an NRG Oncology/GOG Study—Analysis of patient reported outcomes (PRO) on chemotherapy randomization. J Clin Oncol 2015. [DOI: 10.1200/jco.2015.33.15_suppl.5525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | - Thomas J Herzog
- Division of Gynecologic Oncology, The University of Cincinnati Cancer Institute, Cincinnati, OH
| | | | | | | | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Keiichi Fujiwara
- Saitama Medical University International Medical Center, Hidaka, Japan
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Kim HS, Park SY, Park CY, Kim YT, Kim BJ, Song YJ, Kim BG, Kim YB, Cho CH, Kim JH, Song YS. Efficacy and safety comparison between belotecan and topotecan in patients with recurrent or refractory ovarian cancer: A multi-center, randomized, open-labelled, parallel-group phase IIb trial. J Clin Oncol 2015. [DOI: 10.1200/jco.2015.33.15_suppl.5527] [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: 11/20/2022] Open
Affiliation(s)
- Hee Seung Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Sang-Yoon Park
- Center for Uterine Cancer, Research Institute and Hospital, National Cancer Center, Goyang-Si, South Korea
| | - Chan-Yong Park
- Department of Obstetrics and Gynecology, Gil Medical Center, Gachon University of Medicine and Science, Incheon, South Korea
| | - Young-Tae Kim
- Department of Obstetrics and Gynecology, Institute of Women’s Medical Life Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Beob-Jong Kim
- Department of Obstetrics and Gynecology, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Yong Jung Song
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Yangsan, South Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yong Beom Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam-Si, South Korea
| | - Chi-Heum Cho
- Department of Obstetrics and Gynecology, Dongsan Medical Center, Keimyung University, Daegu, South Korea
| | - Jong-Hyeok Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Yong Sang Song
- Seoul National University College of Medicine, Seoul, South Korea
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Kong C, Shin SY, Park CS, Kim BG. Effects of Feeding Barley Naturally Contaminated with Fusarium Mycotoxins on Growth Performance, Nutrient Digestibility, and Blood Chemistry of Gilts and Growth Recoveries by Feeding a Non-contaminated Diet. Asian-Australas J Anim Sci 2015; 28:662-70. [PMID: 25715687 PMCID: PMC4412996 DOI: 10.5713/ajas.14.0707] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/08/2014] [Accepted: 12/03/2014] [Indexed: 11/27/2022]
Abstract
The objectives of this study were to investigate the effects of feeding barley naturally contaminated with Fusarium mycotoxins on growth performance, vulva swelling, and digestibility of dry matter, organic matter, and crude protein of gilts and the recovery of gilts fed normal diets immediately after the exposure to contaminated diets by measuring growth performance and vulva swelling. In Exp. 1, four diets were prepared to contain 0%, 15%, 30%, or 45% contaminated barley containing 25.7 mg/kg deoxynivalenol and 26.0 μg/kg zearalenone. Sixteen gilts with an initial body weight (BW) of 33.3 kg (standard deviation = 3.0) were individually housed in a metabolism crate and assigned to 4 diets with 4 replicates in a randomized complete block design based on BW. During the 14-d feeding trial, individual BW and feed consumption were measured weekly and the vertical and horizontal lengths of vulva were measured every 3 d. From d 10, feces were collected by the maker-to-marker method for 4 d. Blood samples were collected on d 14. During the overall period, the average daily gain, average daily feed intake, and gain:feed of pigs linearly decreased (p<0.01) as the dietary concentration of contaminated barley increased. However, the digestibility of crude protein was linearly increased (p = 0.011) with the increasing amounts of contaminated barley. Increasing dietary Fusarium mycotoxin concentrations did not influence vulva size, blood characteristic as well as immunoglobulin level of pigs. In the Exp. 2, a corn-soybean meal-based diet was formulated as a recovery diet. Pigs were fed the recovery diet immediately after completion of the Exp. 1. During the 14-d of recovery period, the individual BW and feed consumption were measured weekly and the vertical and horizontal length of vulva were measured every 3 d from d 0. On d 7, the feed intake of pigs previously fed contaminated diets already reached that of pigs fed a diet with 0% contaminated barley and no significant difference in growth performance among treatments was observed during d 7 to 14 of the recovery period. In conclusion, increasing levels of mycotoxins in diets linearly decreased the growth performance of pigs, and these damages can be recovered in 7 d after the diet was replaced with a normal diet. The vulva size, blood characteristic, immune responses were not affected by increasing level of contaminated barley in the diets fed to pigs.
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Affiliation(s)
- C Kong
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - S Y Shin
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - C S Park
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
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Min JJ, Kim HJ, Jung SY, Kim BG, Kwon K, Jung HJ, Kim TK, Hong DM, Park BJ, Jeon Y. Effects of Palonosetron on Perioperative Cardiovascular Complications in Patients Undergoing Noncardiac Surgery With General Anesthesia: A Retrospective Cohort Study. Clin Pharmacol Ther 2015; 98:96-106. [PMID: 25786663 DOI: 10.1002/cpt.121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/19/2015] [Accepted: 03/13/2015] [Indexed: 11/10/2022]
Abstract
We retrospectively investigated whether palonosetron administered during the induction of general anesthesia is associated with an increased risk of perioperative cardiovascular complications in a single tertiary center cohort consisting of 4,517 palonosetron-exposed patients and 4,517 propensity score-matched patients without palonosetron exposure. The primary endpoint was a composite of perioperative cardiovascular complications, including intraoperative cardiac arrhythmia, intraoperative cardiac death, and myocardial injury within the first postoperative week, and there was no significant difference between the groups (odds ratio [OR] = 1.04; 95% confidence interval [CI] = 0.92-1.19). As secondary endpoints, intraoperative cardioversion, cardiac compression, use of cardiovascular drugs, postoperative hospital stay, and in-hospital mortality showed no differences between the groups. However, the palonosetron group showed decreased intraoperative hypotension (OR = 0.88; 95% CI = 0.79-0.97) and length of postoperative intensive care unit (ICU) stay (4.26 ± 9.86 vs. 6.14 ± 16.75; P = 0.026). Palonosetron did not increase the rate of perioperative cardiovascular complications, and can therefore be used safely during anesthetic induction.
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Affiliation(s)
- J J Min
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - H J Kim
- Department of Anesthesiology and Pain Medicine, Severance Hospital, Seoul, Republic of Korea
| | - S-Y Jung
- Korea Institute of Drug Safety and Risk Management (KIDS), Seoul, Republic of Korea
| | - B G Kim
- Korea Institute of Drug Safety and Risk Management (KIDS), Seoul, Republic of Korea
| | - K Kwon
- Korea Institute of Drug Safety and Risk Management (KIDS), Seoul, Republic of Korea
| | - H-J Jung
- Korea Institute of Drug Safety and Risk Management (KIDS), Seoul, Republic of Korea
| | - T K Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - D M Hong
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - B-J Park
- Korea Institute of Drug Safety and Risk Management (KIDS), Seoul, Republic of Korea.,Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y Jeon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
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Son AR, Kim BG. Effects of dietary cellulose on the Basal endogenous loss of phosphorus in growing pigs. Asian-Australas J Anim Sci 2015; 28:369-73. [PMID: 25656212 PMCID: PMC4341081 DOI: 10.5713/ajas.14.0539] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/05/2014] [Accepted: 09/13/2014] [Indexed: 12/01/2022]
Abstract
An experiment was conducted to determine the effect of cellulose concentration in diets containing no phosphorus (P) on the basal endogenous loss (BEL) of P in growing pigs. Twelve barrows (an initial mean body weight = 49.6±3.2 kg) were individually housed in metabolism crates. Pigs were allotted to 4 experimental diets according to a cross-over design with 12 animals and 2 periods. Four P-free diets were mainly based on corn starch, sucrose, and gelatin, and were formulated to contain 0%, 4%, 8%, or 12% cellulose. Each period consisted of a 5-d adaptation and a 5-d collection period. The marker-to-marker method was used for fecal collection. The feed intake (p<0.05, linear and quadratic) and dry feces output (p<0.01, linear and quadratic) were increased with increasing dietary cellulose concentration. However, P concentration in the feces was decreased (p<0.01, linear and quadratic) with increasing dietary cellulose concentration. There was no significant difference in total P output and the BEL of P as mg per kg DMI (ranging from 157 to 214 mg/kg of dry matter intake) among experimental diets. However, values for the apparent total tract digestibility of energy, dry matter, organic matter, crude protein, and calcium were linearly decreased (p<0.01) with increasing cellulose concentration in the diet. In conclusion, dietary cellulose affected the amount of feces and digestibility of energy and nutrients, but did not affect the endogenous loss of P.
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Kim BG, Liu Y, Stein HH. Energy concentration and phosphorus digestibility in yeast products produced from the ethanol industry, and in brewers' yeast, fish meal, and soybean meal fed to growing pigs. J Anim Sci 2014; 92:5476-84. [PMID: 25367516 DOI: 10.2527/jas.2013-7416] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Two experiments were conducted to determine the DE, ME, and standardized total tract digestibility (STTD) of P in 2 novel sources of yeast (C-yeast and S-yeast) and in brewers' yeast, fish meal, and soybean meal fed to growing pigs. The 2 new sources of yeast are coproducts from the dry-grind ethanol industry. The concentrations of DM, GE, and P were 94.8%, 5,103 kcal/kg, and 1.07% in C-yeast; 94.4%, 4,926 kcal/kg, and 2.01% in S-yeast; 93.6%, 4,524 kcal/kg, and 1.40% in brewers' yeast; 91.4%, 4,461 kcal/kg, and 3.26% in fish meal; and 87.7%, 4,136 kcal/kg, and 0.70% in soybean meal, respectively. The DE and ME in each of the ingredients were determined using 42 growing barrows (28.9±2.18 kg BW). A corn-based basal diet and 5 diets containing corn and 24% to 40% of each test ingredient were formulated. The total collection method was used to collect feces and urine, and the difference procedure was used to calculate values for DE and ME in each ingredient. The concentrations of DE in corn, C-yeast, S-yeast, brewers' yeast, fish meal, and soybean meal were 4,004, 4,344, 4,537, 4,290, 4,544, and 4,362 kcal/kg DM (SEM=57), respectively, and the ME values were 3,879, 3,952, 4,255, 3,771, 4,224, and 4,007 kcal/kg DM (SEM=76), respectively. The ME in S-yeast and fish meal were greater (P<0.05) than the ME in corn and brewers' yeast, whereas the ME in C-yeast and soybean meal were not different from those of any of the other ingredients. The STTD of P in the 5 ingredients was determined using 42 barrows (28.3±7.21 kg BW) that were placed in metabolism cages. Five diets were formulated to contain each test ingredient as the sole source of P, and a P-free diet was used to estimate the basal endogenous loss of P. Feces were collected for 5 d using the marker to marker method after a 5-d adaptation period. The STTD of P in brewers' yeast (85.2%) was greater (P<0.05) than the STTD of P in all the other ingredients except S-yeast (75.7%). The STTD of P in C-yeast (73.9%) was not different from the STTD of P in S-yeast and fish meal (67.3%) but was greater (P<0.05) than the STTD of P in soybean meal (56.7%). In conclusion, the 2 novel sources of yeast contain similar or greater concentrations of energy compared with brewers' yeast, corn, fish meal, and soybean meal, and the STTD of P in the 2 yeast products is not different from the STTD of P in fish meal.
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Affiliation(s)
- B G Kim
- Department of Animal Sciences, University of Illinois at Urban-Champaign, Urbana 61801
| | - Y Liu
- Department of Animal Sciences, University of Illinois at Urban-Champaign, Urbana 61801
| | - H H Stein
- Department of Animal Sciences, University of Illinois at Urban-Champaign, Urbana 61801
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Kim BG, Kil DY, Mahan DC, Hill GM, Stein HH. Effects of dietary sulfur and distillers dried grains with solubles on carcass characteristics, loin quality, and tissue concentrations of sulfur, selenium, and copper in growing-finishing pigs. J Anim Sci 2014; 92:4486-93. [PMID: 25149347 DOI: 10.2527/jas.2013-6323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Inclusion of up to 0.38% S in diets that contain 30% distillers dried grains with solubles (DDGS) has no negative effect on growth performance of growing-finishing pigs, but there is no information about the effects of dietary S on accumulation of S in tissues in pigs. Therefore, the objective of this experiment was to determine if the concentration of S in diets containing DDGS affects carcass characteristics, loin quality, or tissue mineral concentrations in growing-finishing pigs. A total of 120 barrows (34.2 ± 2.3 kg BW) were allotted to 3 dietary treatments with 10 replicate pens and 4 pigs per pen in a randomized complete block design. Pigs were fed grower diets for 42 d and finisher diets for 42 d. At the conclusion of the experiment, the pig in each pen with the BW closest to the pen average was slaughtered. The control diet was based on corn and soybean meal and the finisher diet contained 0.14% S, 0.19 mg/kg Se, and 15.3 mg/kg Cu. The DDGS diet was formulated with corn, soybean meal, and 30% DDGS and the finisher diet with DDGS contained 0.16% S, 0.32 mg/kg Se, and 14.0 mg/kg Cu. The DDGS plus S (DDGS-S) diet was similar to the DDGS diet, except that 1.10% CaSO4 (16.2% S) was included in this diet, and the finisher diet with DDGS-S contained 0.37% S, 0.35 mg/kg Se, and 13.8 mg/kg Cu. Results indicated that organ weights and loin quality, 24-h pH, drip loss, loin subjective color, marbling, and firmness did not differ among treatments, but loin a* was greater (P < 0.05) for pigs fed the control diet than for pigs fed the DDGS-S diet. Concentrations of S in hair, liver, heart, loin, and all other tissues did not differ among treatments, but urinary S concentration was greater (P < 0.05) for pigs fed the DDGS-S diet than for pigs fed the other diets. Pigs fed the DDGS diet or the DDGS-S diet had greater (P < 0.01) concentrations of Se in hair, liver, heart, and loin than pigs fed the control diet, but liver concentrations of Cu did not differ among treatments. In conclusion, inclusion of 30% DDGS in diets fed to growing-finishing pigs did not influence carcass characteristics or tissue S concentrations regardless of S concentration in the diet, and excess dietary S was excreted in the urine. However, because of the greater concentration of Se in DDGS than in corn and soybean meal and, therefore, greater concentrations in DDGS-containing diets, tissue concentrations of Se were increased in pigs fed diets that contained DDGS. In contrast, dietary DDGS did not influence liver concentrations of Cu.
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Affiliation(s)
- B G Kim
- Department of Animal Science and Environment, Konkuk University, Seoul 143-701, Republic of Korea
| | - D Y Kil
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 456-756, Republic of Korea
| | - D C Mahan
- Department of Animal Science, The Ohio State University, Columbus 43210-1095
| | - G M Hill
- Department of Animal Science, Michigan State University, East Lansing 48824-125
| | - H H Stein
- Department of Animal Sciences, University of Illinois, Urbana 61801
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Kong C, Kang HG, Kim BG, Kim KH. Ileal digestibility of amino acids in meat meal and soybean meal fed to growing pigs. Asian-Australas J Anim Sci 2014; 27:990-5. [PMID: 25050041 PMCID: PMC4093576 DOI: 10.5713/ajas.2014.14217] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 04/26/2014] [Accepted: 04/28/2014] [Indexed: 12/03/2022]
Abstract
The objective of this experiment was to determine the concentration and digestibility of crude protein (CP) and amino acid (AA) in meat meal (MM), and to compare these values with the respective values in soybean meal (SBM). Six barrows (initial body weight = 66.9±3.8 kg) surgically fitted with a T-cannula at the distal ileum were allotted to a replicated 3×3 balanced Latin square design with 3 diets and 3 periods. Two experimental diets containing test ingredients as the sole source of AA were prepared to estimate the apparent ileal digestibility (AID) for CP and AA by the direct method. An N-free diet was also prepared to estimate basal endogenous losses of CP and AA. All experimental diets contained 5% chromic oxide as an indigestible index. Each period consisted of a 5-d adaptation period and a 2-d of ileal digesta collection period. Ileal digesta samples were collected from 0900 to 1700 on d 6 and 7 of each period. The concentrations of CP, Lys, Met, and Trp in MM and SBM were analyzed to be 64.1, 3.5, 1.1 and 0.6, and 45.6, 2.8, 0.8, and 0.3%, respectively. The AID of all AA except Gly in MM was less (p<0.05) than in SBM. The AID of Lys, Met, and Trp in MM was estimated to be 56.0, 71.7, and 47.1%, respectively. The SID of all AA in MM was less (p<0.05) than in SBM. The SID of Lys, Met, and Trp was 65.1, 79.2, and 78.5%, respectively. In conclusion, the CP and AA contents in MM were greater than those in SBM whereas the ileal digestibility of all AA in MM was less than in SBM.
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Affiliation(s)
- C Kong
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - H G Kang
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - K H Kim
- Department of Food and Animal Biotechnology, Seoul National University, Seoul 151-921, Korea . ; Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 232-916, Korea
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Abstract
Pigs require energy for maintenance and productive purposes, and an accurate amount of available energy in feeds should be provided according to their energy requirement. Available energy in feeds for pigs has been characterized as DE, ME, or NE by considering sequential energy losses during digestion and metabolism from GE in feeds. Among these energy values, the NE system has been recognized as providing energy values of ingredients and diets that most closely describes the available energy to animals because it takes the heat increment from digestive utilization and metabolism of feeds into account. However, NE values for diets and individual ingredients are moving targets, and therefore, none of the NE systems are able to accurately predict truly available energy in feeds. The DE or ME values for feeds are important for predicting NE values, but depend on the growth stage of pigs (i.e., BW) due to the different abilities of nutrient digestion, especially for dietary fiber. The NE values are also influenced by both environment that affects NE requirement for maintenance (NEm) and the growth stage of pigs that differs in nutrient utilization (i.e., protein vs. lipid synthesis) in the body. Therefore, the interaction among animals, environment, and feed characteristics should be taken into consideration for advancing feed energy evaluation. A more mechanistic approach has been adopted in Denmark as potential physiological energy (PPE) for feeds, which is based on the theoretical biochemical utilization of energy in feeds for pigs. The PPE values are, therefore, believed to be independent of animals and environment. This review provides an overview over current knowledge on energy utilization and energy evaluation systems in feeds for growing pigs.
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Affiliation(s)
- D Y Kil
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 456-756, Korea
| | - B G Kim
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 456-756, Korea
| | - H H Stein
- Department of Animal Science and Technology, Chung-Ang University, Anseong-si, Gyeonggi-do 456-756, Korea
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Choo YK, Kwon HJ, Oh ST, Um JS, Kim BG, Kang CW, Lee SK, An BK. Comparison of growth performance, carcass characteristics and meat quality of korean local chickens and silky fowl. Asian-Australas J Anim Sci 2014; 27:398-405. [PMID: 25049967 PMCID: PMC4093260 DOI: 10.5713/ajas.2013.13638] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 01/20/2014] [Accepted: 01/02/2014] [Indexed: 11/27/2022]
Abstract
This study was conducted to compare growth performance, carcass characteristics and meat quality of 4 breeds of local chicken. A total of 480 1-d-old chicks were distributed to 16 pens, with 4 treatments of breed, 4 replicates and 30 chicks per pen. Three Korean local breeds of white-mini broiler, Hanhyup-3-ho, and Woorimatdag, and a breed of silky fowl were raised under identical rearing and feeding conditions for 31-d, 37-d, 36-d, and 59-d, respectively. The BW and feed consumption on a pen basis were weekly measured for all pens, and ADFI, ADG and gain:feed were calculated for each pen. The ADFI and ADG of 3 breeds of Korean local chicken were greater than those of silky fowl (p<0.05). Within the Korean local breeds, ADFI of white-mini broiler was the highest (p<0.05), and ADG of Hanhyup-3-ho and white-mini broiler was the highest (p<0.05). Gain:feed of silky fowl was less than that of the 3 breeds of Korean local chicken. The carcass and breast yield of white-mini broiler were the greater than those of other breeds (p<0.05). The breast meat color (CIE L*, a*, and b*) of 3 breeds of Korean local chicken were higher than that of silky fowl (p<0.05). The breast meat of Hanhyup-3-ho had greater cooking loss (p<0.05), whereas water holding capacity and pH were less than those of other breeds (p<0.05). The color score of 3 breeds of Korean local chicken was higher than that of silky fowl (p<0.05). Woorimatdag had a higher score on tenderness (p<0.05), whereas flavor score was less than that of other breeds (p<0.05). In conclusion, 4 local breeds of chicken have some unique features and seem to have more advantages, and this information can help consumers who prefer healthy and premium chicken meat.
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Affiliation(s)
- Y K Choo
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - H J Kwon
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - S T Oh
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - J S Um
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - B G Kim
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - C W Kang
- Nonghyup Feed Inc., Seoul 134-763, Korea
| | - S K Lee
- Department of Animal Products and Food Science, Kangwon National University, Chuncheon 200-701, Korea
| | - B K An
- Nonghyup Feed Inc., Seoul 134-763, Korea
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Cho H, Nam BH, Kim SM, Cho CH, Kim BG, Ryu HS, Kang SB, Kim JH. A phase 2 trial of radiation therapy with concurrent paclitaxel chemotherapy after surgery in patients with high-risk endometrial cancer: a Korean Gynecologic Oncologic Group study. Int J Radiat Oncol Biol Phys 2014; 90:140-6. [PMID: 25015202 DOI: 10.1016/j.ijrobp.2014.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 05/12/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE A phase 2 study was completed by the Korean Gynecologic Oncologic Group to evaluate the efficacy and toxicity of concurrent chemoradiation with weekly paclitaxel in patients with high-risk endometrial cancer. METHODS AND MATERIALS Pathologic requirements included endometrial endometrioid adenocarcinoma stages III and IV. Radiation therapy consisted of a total dose of 4500 to 5040 cGy in 5 fractions per week for 6 weeks. Paclitaxel 60 mg/m(2) was administered once weekly for 5 weeks during radiation therapy. RESULTS Fifty-seven patients were enrolled between January 2006 and March 2008. The median follow-up time was 60.0 months (95% confidence interval [CI], 51.0-58.2). All grade 3/4 toxicities were hematologic and usually self-limited. There was no life-threatening toxicity. The cumulative incidence of intrapelvic recurrence sites was 1.9% (1/52), and the cumulative incidence of extrapelvic recurrence sites was 34.6% (18/52). The estimated 5-year disease-free and overall survival rates were 63.5% (95% CI, 50.4-76.5) and 82.7% (95% CI, 72.4-92.9), respectively. CONCLUSIONS Concurrent chemoradiation with weekly paclitaxel is well tolerated and seems to be effective for high-risk endometrioid endometrial cancers. This approach appears reasonable to be tested for efficacy in a prospective, randomized controlled study.
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Affiliation(s)
- Hanbyoul Cho
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea; Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Byung-Ho Nam
- Cancer Biostatistics Branch, Research Institute for National Cancer Control and Evaluation, National Cancer Center, Goyang, Republic of Korea
| | - Seok Mo Kim
- Department of Obstetrics and Gynecology, Chonnam National University School of Medicine, Gwangju, Republic of Korea
| | - Chi-Heum Cho
- Department of Obstetrics and Gynecology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Byoung Gie Kim
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hee-Sug Ryu
- Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Soon Beom Kang
- Department of Obstetrics and Gynecology, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Jae-Hoon Kim
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea; Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Kang S, Jung DC, Kim SC, Kim JW, Nam JH, Ryu SY, Seong SJ, Kim BG. Frequent use of complex surgeries and survival outcomes in ovarian cancer patients: A propensity score analysis from the Korean Gynecologic Oncology Group. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.15_suppl.5537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | - Seung Cheol Kim
- Department of Obstetrics and Gynecology, Ewha Woman's University Mokdong Hospital, Ewha Woman's University School of Medicine, Seoul, South Korea
| | | | - Joo-Hyun Nam
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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Okamoto A, Sugiyama T, Hamano T, Kim JW, Kim BG, Enomoto T, Aoki D, Terao Y, Suzuki N, Mikami M, Yaegashi N, Kato K, Yoshikawa H, Pignata S, Alexandre J, Green JA, Isonishi S, Terauchi F, Fujiwara K, Ochiai K. Randomized phase III trial of paclitaxel/carboplatin (PC) versus cisplatin/irinotecan (CPT-P) as first-line chemotherapy in patients with clear cell carcinoma (CCC) of the ovary: A Japanese Gynecologic Oncology Group (JGOG)/GCIG study. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.15_suppl.5507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | | | - Jae Weon Kim
- Seoul National University, College of Medicine, Seoul, South Korea
| | | | | | | | | | | | | | - Nobuo Yaegashi
- Department of Gynecology, Tohoku University School of Medicine, Sendai, Japan
| | | | - Hiroyuki Yoshikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | | | | | | | | | | | - Keiichi Fujiwara
- Saitama Medical University International Medical Center, Saitama, Japan
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Song Y, Choi HS, Kim K, Kim Y, Kim BG, Hong D, Keum B, Chun HJ. A simple novel endoscopic successive suture device: a validation study for closure strength and reproducibility. Endoscopy 2013; 45:655-60. [PMID: 23881806 DOI: 10.1055/s-0033-1344214] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS Endoscopic surgical technology has been developing rapidly. Although several successful endoscopic closure devices have already been introduced, only a few of them have demonstrated improvements in closure strength and reproducibility over conventional endoscopic clip closures or hand sutures. The objective of this study was to test the feasibility of a novel successive suturing device (SSD) by measuring closure strength and reproducibility. MATERIAL AND METHODS Porcine stomach models were used in this study. Endoclips, full-thickness hand sutures, and the novel SSD sutures were used to close a perforation in the stomach wall, with 10 stomachs being tested for each closure method. Endoclips and SSD sutures were performed using a two-channel endoscope, and the hand sutures were performed from outside of the stomach wall. Air leakage pressure was measured to determine the closure strength and reproducibility of each method. RESULTS The mean air leakage pressure of the SSD closure was 62.7 ± 8.2 mmHg. SSD-treated stomachs exhibited significantly greater air leakage pressure than Endoclip-treated stomachs. The standard deviation of bursting pressure in SSD stomachs was found to be significantly smaller than that of hand-sewn stomachs but was not different from that of Endoclip stomachs. CONCLUSIONS The consistent closure strength of SSD stomachs demonstrated the reliability and reproducibility of this new closure method. These promising results in closure strength and reproducibility suggest the feasibility of the proposed device for clinical applications.
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Affiliation(s)
- Y Song
- Department of Mechanical Engineering, Korea University, Seoul, Korea
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