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Li L, Zhou ZH, Ju W, Deng W, Chen LC, Li CS, Xia YH, Ju JH. [Clinical effects of free anterolateral thigh perforator flap pedicled with descending genicular artery in repairing wounds after lower leg limb-sparing surgery]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:450-455. [PMID: 37805754 DOI: 10.3760/cma.j.cn501225-20220725-00308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To explore the clinical effects of free anterolateral thigh perforator flap pedicled with descending genicular artery in repairing wounds after lower leg limb-sparing surgery. Methods: A retrospective observational study was conducted. From January 2019 to June 2021, 12 patients with wounds after lower leg limb-sparing surgery who met the inclusion criteria were admitted to Suzhou Ruihua Orthopedic Hospital, including 6 males and 6 females, aged 17 to 74 years, with original wound area ranging from 17 cm×9 cm to 40 cm×15 cm. Five patients had infection in wounds. The wounds were all repaired by free anterolateral thigh perforator flap from contralateral thigh, with area of 18 cm×10 cm to 37 cm×9 cm. The artery of flap was anastomosed with the descending genicular artery, and the wounds in donor areas were sutured directly. Seven patients were transplanted with split-thickness skin grafts from the contralateral thigh to cover the remaining wounds that can not be covered by flap and the wounds in donor areas were covered with gauze. During the operation, the types of perforating branch carried by flap and the types of arteries and veins in recipient areas were recorded. The survival and occurrence of vascular crisis of flap, the survival of skin graft, the wound healing in donor and recipient areas, and the length of hospital stay after flap transplant surgery were recorded. During follow-up, the color and texture of flap, reinfection in lower leg, and fracture healing were recorded. At the last follow-up, the limb salvage function of patients was evaluated according to the functional evaluation criteria of Chen Zhongwei's amputated limb replantation. Results: The types of perforating branches carried by flaps were as follows: 6 cases of only carrying the descending branch of the lateral circumflex femoral artery, 3 cases of only carrying the oblique branch of the lateral circumflex femoral artery, and 3 cases of carrying the descending branch of the lateral circumflex femoral artery and oblique branch of the lateral circumflex femoral artery after internal pressurization anastomosis. The types of arteries in the recipient area of flap were as follows: one case of main trunk of the descending genicular artery, 8 cases of the saphenous branch of the descending genicular artery, and 3 cases of the articular branch of the descending genicular artery. The types of veins in the recipient area of flap were as follows: 8 cases of one accompanying vein of the descending genicular artery and one branch of the great saphenous vein, and 4 cases of two branches of the great saphenous vein. All the flaps survived without vascular crisis, and all the skin grafts also survived. The wounds in the donor and recipient areas were all healed. The length of hospital stay of patient after flap transplant surgery ranged from 13 to 79 days. During the follow-up of 6 to 23 months, the color and texture of flap were both good, with no infection in lower leg wound. Internal or external fixation were removed after fracture healing in 5 patients, and bone graft internal fixation was performed in 7 patients whose fractures were not healed after surgery and all the incisions healed without infection. At the last follow-up, the limb salvage effect of patients was evaluated as followings: excellent in 7 patients, good in 4 patients, and fair in one patient. Conclusions: Free anterolateral thigh flap pedicled with descending genicular artery can effectively repair the wounds after lower leg limb-sparing surgery and control infection with short length of hospital stay, while not increasing the risk of secondary injury of distal limb vessels. Thus, it can obtain satisfactory limb salvage effect which is worthy of clinical promotion.
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Affiliation(s)
- L Li
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - Z H Zhou
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - W Ju
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - W Deng
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - L C Chen
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - C S Li
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - Y H Xia
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - J H Ju
- Department of Orthopaedics Trauma, Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
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Eddy PhD S, Mariani L, Alakwaa F, McCown P, Ju W, Harder J, Reich H, Eichinger F, Godfrey B, Boima V, Ademola A, Hodgin J, Ojo A, Kretzler M. POS-372 A PRECISION MEDICINE APPROACH IDENTIFIES NONINVASIVE BIOMARKERS ASSOCIATED WITH INTRARENAL PATHWAY ACTIVATION IN PATIENTS WITH PROTEINURIC RENAL DISEASES. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Ascani H, Tomilo M, Nair V, Eichinger F, Eddy S, Ju W, Hodgin J, Steck R, Grega D, Kretzler M. MON-332 ADVANCING SYSTEMS-BIOLOGY FOCUSED, GLOMERULAR DISEASE RESEARCH THROUGH PUBLIC-PRIVATE PARTNERSHIPS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Ju W, Li X, Li Z, Wu GR, Fu XF, Yang XM, Zhang XQ, Gao XB. The effect of selenium supplementation on coronary heart disease: A systematic review and meta-analysis of randomized controlled trials. J Trace Elem Med Biol 2017; 44:8-16. [PMID: 28965605 DOI: 10.1016/j.jtemb.2017.04.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/19/2017] [Accepted: 04/24/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Selenium is a crucial mineral with antioxidant and immune functions, and selenium deficiency may increase the risk of coronary heart disease (CHD). However, the effect of selenium supplementation on CHD is still controversial according to numerous randomized controlled trials (RCTs). The aim of our meta-analysis study was to investigate the impact of selenium on CHD. METHODS PUBMED, EMBASE, MEDLINE, and the Cochrane Central Register of Controlled Trials databases were systematically searched to identify RCTs evaluating the effect of selenium supplementation on CHD mortality, blood lipid profile (high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and total cholesterol), serum C-reactive protein (CRP), and the level of glutathione peroxidase (GSH-PX) from inception until September 20, 2016. Odds ratio of CHD mortality and the associated 95% confidence intervals (CIs) were calculated using the fixed effect model. Weighted mean difference or standardized mean difference (SMD) and 95% confidence intervals (CIs) were calculated to determine the lipid profile, serum CRP, and GSH-PX using fixed effect or random effect models depending on the observed heterogeneity. RESULTS A total of 16 eligible RCTs with 43998 participants were included. Significant effects were observed for serum CRP (SMD=-0.48; 95% CI, -0.96 to 0; p=0.049) and GSH-PX (SMD=0.5; 95% CI, 0.36-0.64; p<0.001) after selenium supplementation. However, selenium supplementation was not statistically associated with CHD mortality and an aberrant lipid profile. CONCLUSION Selenium supplementation decreased serum CRP and increased the GSH-PX level, suggesting a positive effect on reducing oxidative stress and inflammation in CHD. However, selenium supplementation is not sufficient to reduce mortality and to improve the lipid status.
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Affiliation(s)
- W Ju
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - X Li
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - Z Li
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - G R Wu
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - X F Fu
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - X M Yang
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China
| | - X Q Zhang
- Laboratory of Physical and Chemical Inspection, Qingdao Municipal Center for Disease Control and Prevention, Qingdao 266011, Shandong Province, China
| | - X B Gao
- Department of Public Health, Shandong University, Jinan 250012, Shandong Province, China.
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Ren Q, Ju W, Wang D, Guo Z, Chen M, He X. Multidisciplinary Cooperation in a Simultaneous Combined Liver and Kidney Transplantation Patient of Primary Hyperoxaluria 1. JNMA J Nepal Med Assoc 2017; 56:175-178. [PMID: 28598458] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023] Open
Abstract
Primary hyperoxaluria type 1 is an autosomal recessive hereditary glyoxylate metabolism disorder characterized by excessive production of oxalate, caused by the deficiency of liver specific peroxisomal enzyme: alanineglyoxylate aminotransferase. For patients with end-stage renal disease, combined liver and kidney transplantation was needed. This report describes one patient, with a diagnosis of end-stage renal disease and primary hyperoxaluria 1 confirmed by PCR and direct sequencing with genomic DNA, received the simultaneous combined liver and kidney transplantation after seven months' waiting. However, there were several complications observed post surgery, such as protracted bleeding, common bile duct anastomotic stenosis, biliary calculi and recurrence of urolithiasis. All these were well solved by relevant department, and finally a satisfactory outcome was achieved. Multidisciplinary cooperation plays an important role on the PH1 patient management, especially when multiple complications are encountered.
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Affiliation(s)
- Q Ren
- Department of hepatobiliary and pancreatic surgery, Peking University Shenzhen Hospital, Shenzhen China
| | - W Ju
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - D Wang
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Z Guo
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - M Chen
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - X He
- Organ Transplant Center, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Sheng Y, Ju W, Huang Y, Li J, Ozer H, Qiao X, Qian Z. Activation of wnt/β-catenin signaling blocks monocyte-macrophage differentiation through antagonizing PU.1-targeted gene transcription. Leukemia 2016; 30:2106-2109. [PMID: 27211263 PMCID: PMC5053841 DOI: 10.1038/leu.2016.146] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Y Sheng
- Department of Medicine and Cancer Center, University of Illinois at Chicago, Chicago, IL, USA
| | - W Ju
- College of Public Health, Jilin University, Jilin, China.,Department of Medicine and Cancer Center, University of Illinois at Chicago, Chicago, IL, USA
| | - Y Huang
- Section of Gastroenterology, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - J Li
- College of Public Health, Jilin University, Jilin, China
| | - H Ozer
- Department of Medicine and Cancer Center, University of Illinois at Chicago, Chicago, IL, USA
| | - X Qiao
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Z Qian
- Department of Medicine and Cancer Center, University of Illinois at Chicago, Chicago, IL, USA
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Zhao Q, Guo Z, Deng W, Fu S, Zhang C, Chen M, Ju W, Wang D, He X. Calpain 2-mediated autophagy defect increases susceptibility of fatty livers to ischemia-reperfusion injury. Cell Death Dis 2016; 7:e2186. [PMID: 27077802 PMCID: PMC4855654 DOI: 10.1038/cddis.2016.66] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 12/17/2022]
Abstract
Hepatic steatosis is associated with significant morbidity and mortality after liver resection and transplantation. This study focuses on the role of autophagy in regulating sensitivity of fatty livers to ischemia and reperfusion (I/R) injury. Quantitative immunohistochemistry conducted on human liver allograft biopsies showed that, the reduction of autophagy markers LC3 and Beclin-1 at 1 h after reperfusion, was correlated with hepatic steatosis and poor survival of liver transplant recipients. In animal studies, western blotting and confocal imaging analysis associated the increase in sensitivity to I/R injury with low autophagy activity in fatty livers. Screening of autophagy-related proteins showed that Atg3 and Atg7 expression levels were marked decreased, whereas calpain 2 expression was upregulated during I/R in fatty livers. Calpain 2 inhibition or knockdown enhanced autophagy and suppressed cell death. Further point mutation experiments revealed that calpain 2 cleaved Atg3 and Atg7 at Atg3Δ92-97 and Atg7Δ344-349, respectively. In vivo and in vitro overexpression of Atg3 or Atg7 enhanced autophagy and suppressed cell death after I/R in fatty livers. Collectively, calpain 2-mediated degradation of Atg3 and Atg7 in fatty livers increases their sensitivity to I/R injury. Increasing autophagy may ameliorate fatty liver damage and represent a valuable method to expand the liver donor pool.
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Affiliation(s)
- Q Zhao
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Z Guo
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - W Deng
- Biotherapy Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - S Fu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - C Zhang
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - M Chen
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - W Ju
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - D Wang
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - X He
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Jung W, Lee K, Lee J, Kim Y, Kim J, Yoon H, Kang B, Kim S, Moon H, Ju W, Kim Y, Park K. EP-1316: Value of imaging modalities in predicting pelvic lymph node metastases for uterine cervical cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32566-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Liu L, Zhang J, Wang Z, Xu D, Jiang Z, Wang T, Ju W, Zhang L. Gender Differences in the Toxicokinetics of Triptolide after Single- and Multiple-dose Administration in Rats. Drug Res (Stuttg) 2015; 65:602-6. [PMID: 25647231 DOI: 10.1055/s-0034-1395676] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Triptolide is a natural compound extracted from the traditional Chinese medicine Tripterygium wilfordii Hook F with distinguishing pharmacological activities and evident toxicities. We reported previously that 28 continuous days of oral administration of triptolide in rats resulted in gender dimorphic profiles in toxicities. To better understand this issue, the toxicokinetics of triptolide was observed in this study. Rats of both sexes were administered 400 μg/kg triptolide either as a single dose or multiple doses for 28 days. Triptolide concentrations in rat plasma were determined using high performance liquid chromatography-tandem mass spectrometry (LC-MS/MS). The plasma concentration-time curve and toxicokinetic parameters revealed gender differences after single and repeated triptolide administration, including significantly higher area under the plasma concentration-time curve (AUC0-∞) and peak plasma concentration (Cmax), lower clearance rate (CL) and longer terminal elimination half-life (t1/2) of triptolide in females, and lower drug exposure levels and greater CL in males. The gender differential disposition of triptolide may be the cause of increased toxicity in females. Moreover, auto-inhibition of metabolism and the resulting increase in drug exposure were observed after repeated dosing. The AUC0-∞ of triptolide was increased 6-fold in females and 2-fold in males, while the CL of triptolide was significantly decreased by 84% in females and 55% in males. These results indicated that gender-related differences existed in the toxicokinetics of triptolide and long-term oral administration of triptolide resulted in drug accumulation, which might account for the gender differences in the toxicities of triptolide.
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Affiliation(s)
- L Liu
- Jiangsu Center of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - J Zhang
- Department of Clinical Pharmacology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - Z Wang
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, China
| | - D Xu
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, China
| | - Z Jiang
- Jiangsu Center of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - T Wang
- Jiangsu Center of Drug Screening, China Pharmaceutical University, Nanjing, China
| | - W Ju
- Department of Clinical Pharmacology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, China
| | - L Zhang
- Jiangsu Center of Drug Screening, China Pharmaceutical University, Nanjing, China
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Lee W, Choi S, Bae J, Koh A, Ko J, Ju W. Laparoscopic Excision of Isolated Para-Aortic Lymph Node Recurrence. J Minim Invasive Gynecol 2014. [DOI: 10.1016/j.jmig.2014.08.749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yu P, Petrus MN, Ju W, Zhang M, Conlon KC, Nakagawa M, Maeda M, Bamford RN, Waldmann TA. Augmented efficacy with the combination of blockade of the Notch-1 pathway, bortezomib and romidepsin in a murine MT-1 adult T-cell leukemia model. Leukemia 2014; 29:556-66. [PMID: 25118879 PMCID: PMC4329116 DOI: 10.1038/leu.2014.241] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/16/2014] [Accepted: 07/21/2014] [Indexed: 01/08/2023]
Abstract
Adult T-cell leukemia (ATL) is an aggressive malignancy caused by human T-cell lymphotropic virus I (HTLV-1). There is no accepted curative therapy for ATL. We have reported that certain ATL patients have increased Notch-1 signaling along with constitutive activation of the NF-κB pathway. Physical and functional interaction between these two pathways provides the rationale to combine the γ-secretase inhibitor Compound E with the proteasome inhibitor Bortezomib. Moreover, Romidepsin, a histone deacetylase inhibitor, has demonstrated major antitumor action in leukemia/lymphoma. In this study, we investigated the therapeutic efficacy of the single agents and combinations of these agents in a murine model of human ATL, the MT-1 model. Single and double agents inhibited tumor growth as monitored by tumor size (P < .05), and prolonged survival of leukemia-bearing mice (P < .05) compared with the control group. The combination of three agents significantly enhanced the antitumor efficacy as assessed by tumor size, tumor markers in the serum (human sIL-2Rα and β2M), and survival of the MT-1 tumor bearing mice, compared with all other treatment groups (P < .05). Improved therapeutic efficacy obtained by combining Compound E, Bortezomib and Romidepsin supports a clinical trial of this combination in the treatment of ATL.
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Affiliation(s)
- P Yu
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M N Petrus
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - W Ju
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Zhang
- 1] Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA [2] Laboratory Animal Science Program, SAIC-Frederick Inc., NCI-Frederick, Frederick, MD, USA
| | - K C Conlon
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Nakagawa
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Maeda
- Institute for Virus Research, Kyoto University, Sakyo-ku, Kyoto, Japan
| | | | - T A Waldmann
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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Ju W, Peng K, Yang S, Sun H, Sampson M, Wang MZ. A chiral HPLC-MS/MS method for simultaneous quantification of warfarin enantiomers and its major hydroxylation metabolites of CYP2C9 and CYP3A4 in human plasma. Austin J Anal Pharm Chem 2014; 1:1010. [PMID: 26161443 PMCID: PMC4494745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Warfarin is an oral anticoagulant that requires frequent therapeutic drug monitoring due to a narrow therapeutic window, considerable interindividual variability in drug response, and susceptibility to drug-drug and drug-diet interactions. Enantiomeric separation and quantification of warfarin enantiomers and clinically important major hydroxylation metabolites are essential for drug interaction studies and phenotypic characterization of CYP2C9 and CYP3A4, the major cytochrome P450 (CYP) enzymes involved in warfarin metabolism. Here, we describe the development and validation of a chiral high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS)-based quantification of R-warfarin, S-warfarin, S-7-hydroxywarfarin (the major CYP2C9 metabolite) and (9R;10S)-10-hydroxywarfarin (the CYP3A4 metabolite) in human plasma. Simple protein precipitation-based extraction showed good recovery of analytes (82.9 - 96.9%). The developed method exhibited satisfactory intra-day and inter-day accuracy and precision. The lower limits of detection were 0.25 nM (or ~0.08 ng/mL) for the warfarin enantiomers and 0.1 nM (or ~0.04 ng/mL) for S-7-hydroxywarfarin and (9R;10S)-10-hydroxywarfarin using only 50 µL plasma during extraction. The validated method was successfully applied to analyze plasma samples obtained from a healthy human subject who enrolled in a clinical drug interaction study involving warfarin.
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Affiliation(s)
- W Ju
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | - K Peng
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | - S Yang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | - H Sun
- Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - M Sampson
- Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - MZ Wang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
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Bae J, Choi J, Kim K, Lee W, Ko J, Koh A, Ju W, Jung U. Laparoscopic Restaging Surgery for Women with Unexpected Ovarian Malignancy. J Minim Invasive Gynecol 2013. [DOI: 10.1016/j.jmig.2013.08.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Myung SK, Ju W, Jung HS, Park CH, Oh SW, Seo HG, Kim HS. Efficacy and safety of pharmacotherapy for smoking cessation among pregnant smokers: a meta-analysis. BJOG 2012; 119:1029-39. [DOI: 10.1111/j.1471-0528.2012.03408.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kim Y, Park H, Kim N, Kim S, Ju W. Effect of lumbar sympathetic ganglion block in patients with lymphedema after the treatment of gynecologic cancer: A preliminary report. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Abstract
BACKGROUND Case-control studies have reported the preventive effect of vitamin or antioxidant intake on cervical neoplasms such as cervical intraepithelial neoplasia (CIN) and invasive cervical cancer. However, the findings are inconsistent. OBJECTIVE To investigate quantitative effects of vitamin or antioxidant intake on cervical neoplasm using meta-analysis. SEARCH STRATEGY We searched PubMed, EMBASE and the Cochrane Library in November 2008. All articles searched were independently reviewed and selected by two evaluators according to predetermined selection criteria. SELECTION CRITERIA We included case-control studies reporting an association between vitamin or antioxidant intake (or serum level) and cervical neoplasm risk and reporting the adjusted odds ratios (OR) and 95% confidence intervals (CI), whenever possible. DATA COLLECTION AND ANALYSIS After retrieval of data from selected articles, we performed a meta-analysis using both fixed-effects and random- effects models. MAIN RESULTS Of 274 articles meeting our initial criteria, we included 22 case-control studies involving a total of 10,073 participants. In meta-analyses by type of vitamin or antioxidant, a significant preventive effect on cervical neoplasm was found in intakes of vitamin B12 (OR 0.35, 95% CI 0.19-0.63; n=2), vitamin C (OR 0.67, 95% CI 0.55-0.82; n=8), vitamin E (OR 0.56, 95% CI 0.35-0.88; n=10), and beta-carotene (OR 0.68, 95% CI 0.55-0.84; n=9). AUTHORS' CONCLUSIONS The findings of this meta-analysis indicate that overall, there were preventive effects of vitamin or antioxidant intake on cervical neoplasms in case-control studies.
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Affiliation(s)
- S-K Myung
- Cancer Epidemiology Branch, Research Institute, Smoking Cessation Clinic and Center for Cancer Prevention and Detection, Hospital, National Cancer Center, Goyang, Korea
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Ju W, Yang S, Wang Q, Xing H, Xie W, Xie Y, Cheng J. PP-143 Hepatitis C virus genotype and subtype distribution in China. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60295-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Kim N, Chung S, Lee S, Ju W, Kim S. Genetic polymorphisms of the transporter associated with antigen processing are associated with cervical neoplasia in Korean women. Gynecol Oncol 2011. [DOI: 10.1016/j.ygyno.2010.12.255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Zhang F, Yang B, Chen H, Ju W, Tang L, Cao K, Chen M. Catheter ablation of ventricular tachycardia originating from the diverticulum of the right ventricular outflow tract. Europace 2011; 13:1047-50. [DOI: 10.1093/europace/eur020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhang F, Chen M, Yang B, Chen H, Ju W, Hou X, Cao K, Tao H, Zhang J, Li L, Jia YH, Chu JM, Ding LG, Zhao YJ, Wei W, Wang J, Zhang S, Suenaga H, Saito S, Zheng L, Yao Y, Zhang S, Zhang K, Chen W, Li J, Wang F, Chen X. VT Ablation II. Europace 2011. [DOI: 10.1093/europace/euq468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yaduvanshi A, Kumar M, Kataria V, Arora V, Nair M, Ardashev AV, Rybachenko MS, Zhelyakov EG, Konev AV, Xv D, Yang B, Chen M, Zhang F, Ju W, Chen H, Zhai L, Wang J, Yu J, Shan Q, Zou J, Chen C, Hou X, Cao K, Termosesov S, Garipov R, Ilich I, Volkova Y, Zhang F, Chen M, Yang B, Chen H, Ju W, Xu D, Zou J, Shan Q, Cao K, Liu J, Fang PH, Hou Y, Jia YH, Chu JM, Yao Y, Ma J, Pu JL, Zhang S. Catheter Ablation. Europace 2011. [DOI: 10.1093/europace/euq469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang B, Chen M, Zhang F, Ju W, Chen H, Zhai L, Yang H, Wang J, Yu J, Shan Q, Zou J, Chen C, Hou X, Cao K, Chi SY, Ho D, Wong SP, Prasertwitayakij N, Vodnala D, Pridjian AK, Thakur RK, Tan VH, Lee L, Wah LB, Tan M, Khurana R, Liew R, Chow J, Madras A, Arena F, Barin E, Figtree G. Case Reports I. Europace 2011. [DOI: 10.1093/europace/euq486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang B, Chen M, Zhang F, Ju W, Chen H, Zhao W, Zhai L, Wang J, Yu J, Shan Q, Zou J, Chen C, Dongjie X, Hou X, Cao K, Dong YX, Yang YZ, Oh JK, Mitsuru M, Powell BD, Larson MD, Buescher TL, Hodge DO, Packer DL, Cha YM, Liu J, Fang P, Hou Y, Li X, Hou C, Ma J, Pu J, Zhang S, Ju W, Yang B, Chen H, Zhang F, Zhai L, Cao K, Chen M, Yu S, Zhao Q, Qin M, Cui H, Huang H, Huang C. AF Ablation III. Europace 2011. [DOI: 10.1093/europace/euq472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Myung SK, Ju W, Yang N, Choi HJ, Kim SC. Daily intake of isoflavones of >0.07 g associated with endometrial bleeding. BJOG 2010. [DOI: 10.1111/j.1471-0528.2009.02494.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Choi J, Lee J, Jung U, Kim S, Ju W, Lee S. Laparoscopic Systemic Retroperitoneal Lymphadenectomy for Women with Low-Risk Early Endometrial Cancer: A Preliminary Report. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Choi J, Lee J, Ju W, Lee S. Early Laparoscopic Non-Transvesical Repair without Omental Interpositioning for Vesicovaginal Fistula Developing after Hysterectomy. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jung U, Ju W, Lee S. Laparoscopic Para-Aortic Lymphadenectomy for Gynecologic Malignancies Using Four-Trocar Method: A 6-Year Experience in a Single Hospital. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lee S, Lee S, Ju W, Kim S. Severe Dysuria Attributable to a Solitary Leiomyoma of Greater Omentum: An Unusual Case Report. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jung U, Ju W, Lee S. Successful Pregnancy Outcome Following Laparoscopic Management of Heterotopic Pregnancy. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Kwon Y, Kim J, Ju W, Kim S. O501 Differentiated metabolomic signatures in urine of patients with HPV-positive cervical dysplasia. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)60874-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kim S, Ju W, Lee S, Lee S, Myung S, Kim N, Kim H. P1049 Soy intake and risk of endocrine-related gynecological cancer: A meta-analysis. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62535-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Myung SK, Kim Y, Ju W, Choi HJ, Bae WK. Effects of antioxidant supplements on cancer prevention: meta-analysis of randomized controlled trials. Ann Oncol 2009; 21:166-79. [PMID: 19622597 DOI: 10.1093/annonc/mdp286] [Citation(s) in RCA: 111] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND This meta-analysis aimed to investigate the effect of antioxidant supplements on the primary and secondary prevention of cancer as reported by randomized controlled trials. METHODS We searched Medline (PubMed), Excerpta Medica database, and the Cochrane Review in October 2007. RESULTS Among 3327 articles searched, 31 articles on 22 randomized controlled trials, which included 161 045 total subjects, 88 610 in antioxidant supplement groups and 72 435 in placebo or no-intervention groups, were included in the final analyses. In a fixed-effects meta-analysis of all 22 trials, antioxidant supplements were found to have no preventive effect on cancer [relative risk (RR) 0.99; 95% confidence interval (CI) 0.96-1.03). Similar findings were observed in 12 studies on primary prevention trials (RR 1.00; 95% CI 0.97-1.04) and in nine studies on secondary prevention trials (RR 0.97; 95% CI 0.83-1.13). Further, subgroup analyses revealed no preventive effect on cancer according to type of antioxidant, type of cancer, or the methodological quality of the studies. On the other hand, the use of antioxidant supplements significantly increased the risk of bladder cancer (RR 1.52; 95% CI 1.06-2.17) in a subgroup meta-analysis of four trials. CONCLUSIONS The meta-analysis of randomized controlled trials indicated that there is no clinical evidence to support an overall primary and secondary preventive effect of antioxidant supplements on cancer. The effects of antioxidant supplements on human health, particularly in relation to cancer, should not be overemphasized because the use of those might be harmful for some cancer.
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Affiliation(s)
- S-K Myung
- Center for Cancer Prevention and Detection, National Cancer Center, Goyang, Korea.
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Kim H, Ju W, Jee B, Kim J, Song Y, Lee H. The efficacy of systemic lymphadenectomy for overall survival in epithelial ovarian cancer: A systematic review and meta-analysis by KOGYMAG. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e16509] [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: 11/20/2022] Open
Abstract
e16509 Background: The role of systemic lymphadenectomy remains unclear for improving overall survival in epithelial ovarian cancer (EOC) till now. To evaluate the efficacy of systemic lymphadenectomy for survival in EOC, Korean Gynecologic Meta-analysis Group (KOGYMAG) performed a meta-analysis of all studies which compared systemic lymphadenectomy versus non-systemic lymphadenectomy (not performed or lymph node sampling). Methods: Studies were retrieved by searching PubMed, Embase, and Cochrane Controlled Trials Register (CENTRAL) electronic database. The literature search was conducted between 1995 and 2008. The meta-analysis was carried out on 11 studies (2 randomized controlled and 9 retrospective studies) and a total of 30,534 patients with EOC who underwent staging laparotomy including systemic lymphadenectomy or nonsystemic lymphadenectomy. The study endpoint was overall survival, and we extracted adjusted hazard ratios (HRs) with 95% confidence intervals (CIs) for overall survival from all studies and obtained pooled estimates using an inverse-variance model. Results: In all studies, systemic lymphadenectomy was a favorable factor for overall survival as compared to non-systemic lymphadenectomy (HR, 0.76, 95% CI, 0.65 to 0.88; random-effects model). When we performed sub-analysis according to disease status, patients treated with systemic lymphadenectomy showed improved overall survival compared to those with non-systemic lymphadenectomy in 3 studies where only patients with early-stage EOC (FIGO stage I-II) were included (HR, 0.70; 95% CI, 0.63 to 0.77; fixed-effects model). Furthermore, systemic lymphadenectomy was also a significant factor for improved overall survival in 5 studies where only patients with advanced-stage EOC (FIGO stage III-IV) were enrolled (HR, 0.91; 95% CI, 0.85–0.96; fixed-effects model). Conclusions: These results support that systemic lymphadnectomy may improve overall survival in patients with EOC. However, there are some limitaions including few randomized controlled studies and the deviation of weight in this meta-analysis. Thus, large-scale randomized controlled trials are required to evaluate the efficacy of systemic lymphadenectomy in EOC. No significant financial relationships to disclose.
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Affiliation(s)
- H. Kim
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
| | - W. Ju
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
| | - B. Jee
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
| | - J. Kim
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
| | - Y. Song
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
| | - H. Lee
- Seoul National University, Seoul, Republic of Korea; Ewha Womans University College of Medicine, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul, Republic of Korea; Seoul National University College of Medicine, Seoul, Republic of Korea; Konkuk University Hospital, Seoul, Republic of Korea
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Chen JM, Huang SE, Ju W, Gaumont-Guay D, Black TA. Daily heterotrophic respiration model considering the diurnal temperature variability in the soil. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jg000834] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang YX, Zhang YP, Gu Y, Guan FJ, Li SL, Xie JS, Shen Y, Wu BL, Ju W, Jenkins EC, Brown WT, Zhong N. Genetic analysis of first-trimester miscarriages with a combination of cytogenetic karyotyping, microsatellite genotyping and arrayCGH. Clin Genet 2009; 75:133-40. [DOI: 10.1111/j.1399-0004.2008.01131.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sonnentag O, Chen JM, Roulet NT, Ju W, Govind A. Spatially explicit simulation of peatland hydrology and carbon dioxide exchange: Influence of mesoscale topography. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jg000605] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- O. Sonnentag
- Department of Geography and Program in Planning; University of Toronto; Toronto, Ontario Canada
| | - J. M. Chen
- Department of Geography and Program in Planning; University of Toronto; Toronto, Ontario Canada
| | - N. T. Roulet
- Department of Geography; McGill University; Montreal, Quebec Canada
| | - W. Ju
- International Institute for Earth System Science; Nanjing University; Nanjing, Jiang Su China
| | - A. Govind
- Department of Geography and Program in Planning; University of Toronto; Toronto, Ontario Canada
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Shang H, Lim J, Ju W, Kopp J, Hostetter T, Angeletti R, Bitzer M. 29: Urinary Markers for Progressive Renal Fibrosis. Am J Kidney Dis 2008. [DOI: 10.1053/j.ajkd.2008.02.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
The objective of this study was to assess the role of (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET) for the characterization of ovarian masses that were diagnosed as ovarian malignancies by magnetic resonance imaging (MRI). We performed a retrospective review of eight patients with pathologically confirmed borderline ovarian tumors (BOT) who underwent MRI and FDG-PET before surgical staging from August 2005 to March 2007. We assessed the PET imaging of the BOT, measured the FDG uptake and quantified the findings as a standardized uptake value (SUV). The FDG-PET scans, of all eight patients, showed uptake of FDG with a mean SUV of less than 2.0 in the solid portion of the masses evaluated. We conclude that the MRI-PET differences may help differentiate borderline from malignant ovarian tumors.
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Affiliation(s)
- D C Jung
- Department of Radiology, National Cancer Center, Goyang, Korea
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Ju W, Kim SC. Placenta increta after first-trimester dilatation and curettage manifesting as an unusual uterine mass: magnetic resonance findings. Acta Radiol 2007; 48:938-40. [PMID: 17924226 DOI: 10.1080/02841850701459775] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Placenta increta during the first trimester of pregnancy is extremely rare. Only a few cases of placenta accreta during the latter half of pregnancy manifesting as a uterine mass have been published. This report describes a case of placenta increta that caused prolonged bleeding after a first-trimester abortion, and was identified by magnetic resonance imaging (MRI) as a heterogeneous mass in the myometrium. This is the first report of a placenta increta detected as a uterine mass after first-trimester dilatation and curettage, and its MRI findings.
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Affiliation(s)
- W. Ju
- Department of Obstetrics and Gynecology, and Medical Research Institute, School of Medicine, Ewha Womens University, Seoul, Korea
| | - S. C. Kim
- Department of Obstetrics and Gynecology, and Medical Research Institute, School of Medicine, Ewha Womens University, Seoul, Korea
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Ju W, Kim SC. Discrepancy between magnetic resonance and 18F-fluorodeoxyglucose positron emission tomography imaging in a case of borderline ovarian tumor. Int J Gynecol Cancer 2007; 17:1031-3. [PMID: 17386039 DOI: 10.1111/j.1525-1438.2007.00923.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Borderline ovarian tumors have a far more favorable clinical course compared to malignant ovarian tumors. To date, the role of 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) for the differentiation of an ovarian mass remains controversial. Discrepancy between FDG-PET and magnetic resonance (MR) images is rare but may cause a serious dilemma in decision-making. We report a case of a borderline ovarian tumor showing discrepancy between MR and FDG-PET findings. FDG-PET findings may help with the differentiation of ovarian masses when clinical findings are not coincidental.
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Affiliation(s)
- W Ju
- Department of Obstetrics and Gynecology and Medical Research Institute, College of Medicine, Ewha Womans University, Yangchun-Ku, Seoul, South Korea.
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Li J, Zhang N, Ye B, Ju W, Orser B, Fox JEM, Wheeler MB, Wang Q, Lu WY. Non-steroidal anti-inflammatory drugs increase insulin release from beta cells by inhibiting ATP-sensitive potassium channels. Br J Pharmacol 2007; 151:483-93. [PMID: 17435793 PMCID: PMC2013967 DOI: 10.1038/sj.bjp.0707259] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND AND PURPOSE Some non-steroidal anti-inflammatory drugs (NSAIDs) incidentally induce hypoglycemia, which is often seen in diabetic patients receiving sulphonylureas. NSAIDs influence various ion channel activities, thus they may cause hypoglycemia by affecting ion channel functions in insulin secreting beta cells. This study investigated the effects of the NSAID meclofenamic acid (MFA) on the electrical excitability and the secretion of insulin from pancreatic beta cells. EXPERIMENTAL APPROACH Using patch clamp techniques and insulin secretion assays, the effects of MFA on the membrane potential and transmembrane current of INS-1 cells, and insulin secretion were studied. KEY RESULTS Under perforated patch recordings, MFA induced a rapid depolarization in INS-1 cells bathed in low (2.8 mM), but not high (28 mM) glucose solutions. MFA, as well as acetylsalicylic acid (ASA) and flufenamic acid (FFA), excited the cells by inhibiting ATP-sensitive potassium channels (K(ATP)). In whole cell recordings, K(ATP) conductance consistently appeared when intracellular ATP was diluted. Intracellular glibenclamide prevented the development of K(ATP) activity, whereas intracellular MFA had no effect. At low glibenclamide concentrations, MFA induced additional inhibition of the K(ATP) current. Live cell Ca(2+) imaging displayed that MFA elevated intracellular Ca(2+) at low glucose concentrations. Furthermore, MFA dose-dependently increased insulin release under low, but not high, glucose conditions. CONCLUSIONS AND IMPLICATIONS MFA blocked K(ATP) through an extracellular mechanism and thus increased insulin secretion. As some NSAIDs synergistically inhibit K(ATP) activity together with sulphonylureas, the risk of NSAID-induced hypoglycemia should be considered when glucose-lowering compounds are administered.
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Affiliation(s)
- J Li
- Department of Anesthesia, Sunnybrook Health Sciences Centre, University of Toronto Toronto, Ontario, Canada
- Department of Anesthesia, University of Toronto Toronto, Ontario, Canada
| | - N Zhang
- Division of Endocrinology & Metabolism, St Michael's Hospital, University of Toronto Toronto, Ontario, Canada
| | - B Ye
- Department of Anesthesia, Sunnybrook Health Sciences Centre, University of Toronto Toronto, Ontario, Canada
| | - W Ju
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
| | - B Orser
- Department of Anesthesia, University of Toronto Toronto, Ontario, Canada
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
| | - J E M Fox
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
| | - M B Wheeler
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
| | - Q Wang
- Division of Endocrinology & Metabolism, St Michael's Hospital, University of Toronto Toronto, Ontario, Canada
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
| | - W-Y Lu
- Department of Anesthesia, Sunnybrook Health Sciences Centre, University of Toronto Toronto, Ontario, Canada
- Department of Anesthesia, University of Toronto Toronto, Ontario, Canada
- Department of Physiology, University of Toronto Toronto, Ontario, Canada
- Author for correspondence:
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Hirawat S, Ramael S, Northcutt V, Elfring G, Parquette-Lamontagne N, Davis T, Weetall M, Almstead N, Ju W, Miller L. 51 POSTER Phase 1 single-dose safety, PK, and food-effect study of PTC299, a novel VEGF expression inhibitor for treatment of solid tumors. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70057-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Vetiska SM, Ahmadian G, Ju W, Liu L, Wymann MP, Wang YT. GABAA receptor-associated phosphoinositide 3-kinase is required for insulin-induced recruitment of postsynaptic GABAA receptors. Neuropharmacology 2006; 52:146-55. [PMID: 16890252 DOI: 10.1016/j.neuropharm.2006.06.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2006] [Revised: 06/25/2006] [Accepted: 06/26/2006] [Indexed: 11/16/2022]
Abstract
Type A gamma-aminobutyric acid (GABAA) receptors mediate most of the fast inhibitory synaptic transmission within the vertebrate brain. The regulation of this inhibition is vital in modulating neural activity. One regulator of GABAA receptor function is insulin, which can serve to enhance GABAA receptor-mediated miniature inhibitory postsynaptic currents, via an increase in the number of receptors at the plasma membrane. We set out to investigate the molecular mechanisms involved in the insulin-induced potentiation of GABAA receptor-mediated responses, by examining the role of phosphoinositide 3-kinase (PI3-K), a key mediator of the insulin response within the brain. We found that PI3-K associates with the GABAA receptor, and this interaction is increased following insulin treatment. Additionally, the beta2 subunit of the GABAA receptor appears to mediate the insulin-stimulated association with the N-terminal SH2 domain of the p85 subunit of PI3-K. Our results imply a mechanism whereby insulin can regulate changes in synaptic transmission through its downstream actions on the GABAA receptor.
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Affiliation(s)
- S M Vetiska
- Programme in Brain and Behavior Research, Hospital for Sick Children and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
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Kim SC, Ju W, Mahavni V, Geisler JP, Buller RE. CAG repeat length in exon 1 of the androgen receptor gene is related to age of diagnosis but not germ line BRCA1 mutation status in ovarian cancer. Int J Gynecol Cancer 2006; 16 Suppl 1:190-4. [PMID: 16515589 DOI: 10.1111/j.1525-1438.2006.00300.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
It has been postulated that androgens, through their interaction with androgen receptors (AR), may play an important role in the development of ovarian cancer. Exon 1 of the AR gene contains three highly polymorphic trinucleotide repeats. The length of the (CAG)n repeat segment 1 is inversely correlated with the transactivation function of the AR. Recent studies have shown that BRCA1 may function as an AR coregulator or coactivator and play positive roles in androgen-induced cell death in cancer cells as well as other androgen/AR target organs. We hypothesize that the AR gene, involved in endocrine signaling, may modify BRCA1-associated ovarian cancer risk. To test this hypothesis, potential associations between the (CAG)n repeat length, germ line BRCA1 mutation status, and age of diagnosis for ovarian cancer were investigated. One hundred and eleven ovarian cancer patients (27 hereditary and 84 sporadic) were included. All the cases were allelotyped for CAG repeat length and genotyped for mutations in the BRCA1 gene by direct sequencing. No association between CAG repeat length and BRCA1 mutation status was identified. Furthermore, there were no differences between hereditary and sporadic ovarian cancer in the number of (CAG)n repeats of the short allele (P= 0.336), long allele (P= 0.875), or average allele length (P= 0.550). However, ovarian cancer patients from both groups (hereditary and sporadic) who carried any AR allele of (CAG)n < or = 22 repeats were diagnosed on average 8.17 years (95% confidence interval [1.3, 15.0]) earlier than the patients whose shortest AR allele (CAG)n was >22 (P= 0.020). In conclusion, it is suggested that the CAG repeat length in AR exon 1 may affect the age of diagnosis of ovarian cancer but does so independent of germ line BRCA1 carrier status.
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Affiliation(s)
- S C Kim
- Department of Obstetrics and Gynecology, Medical Research Institute [corrected] College of Medicine, Ewha Women's University, Clinical Research Center for Solid Tumors, Seoul, Korea.
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Ju W, Kim S, Lee M. Dual primary bilateral ovarian carcinomas with different histology. Int J Gynaecol Obstet 2006; 95:62-3. [DOI: 10.1016/j.ijgo.2006.05.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2006] [Revised: 05/09/2006] [Accepted: 05/11/2006] [Indexed: 11/27/2022]
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Seigel GM, Wagner J, Wronska A, Campbell L, Ju W, Zhong N. Progression of early postnatal retinal pathology in a mouse model of neuronal ceroid lipofuscinosis. Eye (Lond) 2006; 19:1306-12. [PMID: 15565184 DOI: 10.1038/sj.eye.6701770] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Accumulation of autofluorescent storage material in the CNS is a hallmark of neuronal ceroid lipofuscinosis (NCL, Batten disease). Since the retina is generally the first CNS target affected in NCL and could serve as a means to assess early disease progression as well as potential therapeutic responses, we followed the course of postnatal retinal pathology in tissues from the CLN8 (mnd) mouse model of NCL. RESULTS Cytoplasmic inclusions in the retinal ganglion cell (RGC) layer were shown by periodic acid schiff stain by P7. TUNEL measurements of cell death became significant at P21 (P<0.001) with most cell death occurring in the photoreceptor layer. Significant autofluorescence and RGC hypertrophy were evident in mnd mice at P0, prior to eye opening or significant cell death. CONCLUSION An increased understanding of the timing, location, and characteristic retinal pathologies of Batten disease may lead to diagnostic and therapeutic advances in the clinical setting.
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Affiliation(s)
- G M Seigel
- Department of Ophthalmology, Ross Eye Institute, Physiology and Biophysics, University at Buffalo-SUNY, Buffalo, NY 14214, USA.
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Zhang N, Kumar M, Xu G, Ju W, Yoon T, Xu E, Huang X, Gaisano H, Peng C, Wang Q. Activin receptor-like kinase 7 induces apoptosis of pancreatic beta cells and beta cell lines. Diabetologia 2006; 49:506-18. [PMID: 16440210 DOI: 10.1007/s00125-005-0095-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2005] [Accepted: 10/06/2005] [Indexed: 12/14/2022]
Abstract
AIMS/HYPOTHESIS Activin receptor-like kinase 7 (ALK7), a member of the type I receptor serine/threonine kinases of the TGF-beta superfamily, was recently reported to regulate cell proliferation and apoptosis. We hypothesised that ALK7 may play a role in modulating pancreatic beta cell proliferation and/or apoptosis. METHODS We detected ALK7 expression in beta cells using RT-PCR, immunostaining and western blotting. Constitutively active, dominant negative or wild-type ALK7 was introduced into beta cells using adenoviral delivery. Proliferation was assessed using (3)H-thymidine incorporation and apoptosis was quantified using terminal deoxynucleotidyl transferase biotin-dUTP nick end labelling detection, DNA degradation analysis and caspase-3 assays. RESULTS Induction of constitutively active ALK7 in beta cells resulted in growth inhibition and enhanced apoptosis; no effect was seen with INS-1 cells expressing wild-type or dominant negative ALK7. Elevated glucose concentrations and fatty acid (palmitate) markedly increased expression levels of ALK7 transcripts and proteins in INS-1 and rat islets and increased beta cell apoptosis. Activation of ALK7 increased Smad2 phosphorylation, reduced protein kinase B (Akt) kinase activity and was associated with increased levels of the bioactive forms of caspase-3, whereas co-expression of constitutively active ALK7 with dominant negative Smad2 or constitutively active Akt significantly diminished ALK7-induced growth inhibition and apoptosis in INS-1 cells. Although overexpression of constitutively active Akt significantly reduced ALK7-induced growth inhibition and ALK7-enhanced beta cell apoptosis, ALK7-stimulated Smad2 phosphorylation was not affected. CONCLUSIONS/INTERPRETATION These results suggest that the pancreatic beta cell apoptosis induced by ALK7 activation occurs via the activation of two distinct downstream pathways: the suppression of Akt activation and the activation of the Smad2-caspase-3 cascade.
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Affiliation(s)
- N Zhang
- Division of Endocrinology and Metabolism, St Michael's Hospital, 30 Bond Street, Room 7005, M5B 1W8 Toronto, ON, Canada
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Kim SC, Ju W, Mahavni V, Geisler JP, Buller RE. CAG repeat length in exon 1 of the androgen receptor gene is related to age of diagnosis but not germ line BRCA1 mutation status in ovarian cancer. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200602001-00030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
It has been postulated that androgens, through their interaction with androgen receptors (AR), may play an important role in the development of ovarian cancer. Exon 1 of the AR gene contains three highly polymorphic trinucleotide repeats. The length of the (CAG)n repeat segment 1 is inversely correlated with the transactivation function of the AR. Recent studies have shown that BRCA1 may function as an AR coregulator or coactivator and play positive roles in androgen-induced cell death in cancer cells as well as other androgen/AR target organs. We hypothesize that the AR gene, involved in endocrine signaling, may modify BRCA1-associated ovarian cancer risk. To test this hypothesis, potential associations between the (CAG)n repeat length, germ line BRCA1 mutation status, and age of diagnosis for ovarian cancer were investigated. One hundred and eleven ovarian cancer patients (27 hereditary and 84 sporadic) were included. All the cases were allelotyped for CAG repeat length and genotyped for mutations in the BRCA1 gene by direct sequencing. No association between CAG repeat length and BRCA1 mutation status was identified. Furthermore, there were no differences between hereditary and sporadic ovarian cancer in the number of (CAG)n repeats of the short allele (P= 0.336), long allele (P= 0.875), or average allele length (P= 0.550). However, ovarian cancer patients from both groups (hereditary and sporadic) who carried any AR allele of (CAG)n≤ 22 repeats were diagnosed on average 8.17 years (95% confidence interval [1.3, 15.0]) earlier than the patients whose shortest AR allele (CAG)n was >22 (P= 0.020). In conclusion, it is suggested that the CAG repeat length in AR exon 1 may affect the age of diagnosis of ovarian cancer but does so independent of germ line BRCA1 carrier status.
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Lee HP, Ju W, Kim JW, Park NH, Song YS, Kang SB, Saw HS, Kim SC. Polymorphisms of interleukin (IL)-1β and the risk of epithelial ovarian cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5036] [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)
- H. P. Lee
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - W. Ju
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - J. W. Kim
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - N. H. Park
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - Y. S. Song
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - S. B. Kang
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - H. S. Saw
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
| | - S. C. Kim
- Seoul National Univ Hosp, Seoul, Republic of Korea; Korea Univ Medcl Ctr, Seoul, Republic of Korea; Ewha Womens’ Univ, Seoul, Republic of Korea
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