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Lee MK, Moon C, Lee MJ, Kwak YG, Lee E, Jeon JH, Park WB, Jung Y, Kim ES, Lee JH, Chun JY, Park SW. Risk factors for the delayed diagnosis of extrapulmonary TB. Int J Tuberc Lung Dis 2021; 25:191-198. [PMID: 33688807 DOI: 10.5588/ijtld.20.0788] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Extrapulmonary TB (EPTB) is more difficult to diagnose than pulmonary TB. The delayed management of EPTB can lead to complications and increase the socio-economic burden.METHODS: Patients newly diagnosed with EPTB were retrospectively enrolled from 11 general hospitals in South Korea from January 2017 to December 2018. The basic characteristics of patients were described. Univariable and multivariable analyses were performed between early and delayed diagnosis groups to identify risk factors for delayed diagnosis and treatment in EPTB.RESULTS: In total, 594 patients were enrolled. Lymph node TB (28.3%) was the predominant form, followed by abdominal (18.4%) and disseminated TB (14.5%). Concurrent lung involvement was 17.8%. The positivity of diagnostic tests showed no significant difference between the two groups. Acute clinical manifestations in disseminated, pericardial and meningeal TB, and immunosuppression were associated with early diagnosis. Delayed diagnosis was associated with outpatient clinic visits, delayed sample acquisition and diagnostic departments other than infection or pulmonology.CONCLUSION: The delay in diagnosis and treatment of EPTB was not related to differences in microbiological characteristics of Mycobacterium tuberculosis itself; rather, it was due to the indolent clinical manifestations that cause referral to non-TB-specialised departments in the outpatient clinic and delay the suspicion of TB and diagnostic testing.
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Affiliation(s)
- M K Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul
| | - C Moon
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan
| | - M J Lee
- Department of Internal Medicine, Inje University Sanggye Paik Hospital, Seoul
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang
| | - E Lee
- Department of Internal Medicine, SoonChunHyang University Seoul Hospital, Seoul, Department of Internal Medicine, Boramae Medical Center, Seoul
| | - J H Jeon
- Department of Internal Medicine, Veterans Health Service Medical Center, Seoul, Department of Internal Medicine, National Medical Center, Seoul
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul
| | - Y Jung
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang
| | - E S Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam
| | - J H Lee
- Department of Internal Medicine, Wonkwang University College of Medicine, Iksan
| | - J Y Chun
- Department of Internal Medicine, National Cancer Center Hospital, Goyang, South Korea
| | - S W Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Department of Internal Medicine, Boramae Medical Center, Seoul
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Seok H, Song J, Jeon JH, Choi HK, Choi WS, Moon S, Park DW. Timing of antibiotics in septic patients: a prospective cohort study. Clin Microbiol Infect 2020; 26:1495-1500. [PMID: 32062049 DOI: 10.1016/j.cmi.2020.01.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 11/14/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To evaluate the effect of timing and appropriateness of antibiotics administration on mortality in patients diagnosed with sepsis according to the Sepsis-3 definition. METHODS This prospective cohort study was conducted in patients diagnosed with sepsis according to the Sepsis-3 definition at the emergency department of Korea University Ansan Hospital from January 2016 to January 2019. The time to antibiotics was defined as the time in hours from emergency department arrival to the first antibiotic administration. Cox proportional hazards regression analysis was used to estimate the association between time to antibiotics and 7-, 14- and 28-day mortality. RESULTS Of 482 patients enrolled onto this study, 203 (42.1%) of 482 and 312 (64.7%) of 482 were diagnosed with septic shock and high-grade infection respectively. The median time to receipt of antibiotic therapy was 115 minutes. Antibiotics were administered within 3 and 6 hours in 340 (70.4%) of 482 and 450 (93.2%) of 482 patients respectively. Initial appropriate empirical antibiotics were administered in 375 (77.8%) of 482 patients. The time to and appropriateness of the initial antibiotics were not associated with 7-, 14- and 28-day mortality in multivariate analysis. The Sequential Organ Failure Assessment (SOFA) score (adjusted hazard ratio (aHR) 1.229, 95% confidence interval (CI) 1.093-1.381, p 0.001) and initial lactate levels (aHR 1.128, 95% CI 1.034-1.230, p 0.007), Charlson comorbidity index (aHR 1.115, 95% CI 1.027-1.210, p 0.014), 2-hour lactate level (aHR 1.115, 95% CI 1.027-1.210, p 0.009) and SOFA score (aHR 1.077, 95% CI 1.013-1.144, p 0.018) affected 7-, 14- and 28-day mortality respectively. Subgroup analysis with septic shock, bacteraemia and high-grade infection did not affect mortality rates. CONCLUSIONS Time to receipt of antibiotics may not affect the prognosis of patients with sepsis if a rapid and well-trained resuscitation is combined with appropriate antibiotic administration within a reasonable time.
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Affiliation(s)
- H Seok
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - J Song
- Department of Emergency Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - J H Jeon
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - H K Choi
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - W S Choi
- Division of Infectious Diseases, Department of Medicine, Republic of Korea
| | - S Moon
- Department of Emergency Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - D W Park
- Division of Infectious Diseases, Department of Medicine, Republic of Korea.
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Abstract
PURPOSE This study measured levels of health literacy, drug knowledge, and drug misuse behavior and analyzed the relationship among major variables related to 137 North Korean refugees who could only receive limited medical benefits owing to cultural and linguistic barriers. METHOD The data were analyzed using descriptive statistics, t test, and the Pearson correlation coefficient using SPSS. RESULTS The subjects' health literacy and drug knowledge levels were low; however, drug misuse behavior was not high. The drug dosage was significant considering the health literacy of the subjects; notably, the functional health literacy of women was high. However, many drug misuse cases were identified among women in their 40s. Health literacy and drug knowledge levels showed a significant relationship. CONCLUSION It is necessary to provide community-based information to vulnerable groups to ensure safe use of medications and to develop a level-based and tailored educational program considering North Korean refugees' literacy levels and cultural characteristics.
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Kim CJ, Song KH, Park KH, Kim M, Choe PG, Oh MD, Lee SH, Jang HC, Kang SJ, Kim HY, Cheon S, Kwak YG, Choi HJ, Kwon KT, Jeon JH, Kim ES, Kim HB. Impact of antimicrobial treatment duration on outcome of Staphylococcus aureus bacteraemia: a cohort study. Clin Microbiol Infect 2018; 25:723-732. [PMID: 30287412 DOI: 10.1016/j.cmi.2018.09.018] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 09/24/2018] [Accepted: 09/24/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVES To assess the outcome of Staphylococcus aureus bacteraemia (SAB) according to factors associated with necessity for longer treatment in conjunction with the duration of treatment. METHODS We prospectively collected the data of patients with SAB consecutively during 12 to 39 months from 11 hospitals. If multiple episodes of SAB occurred in one patient, only the first episode was enrolled. Factors associated with necessity for longer treatment were defined as follows: persistent bacteraemia, metastatic infection, prosthesis and endocarditis. If any of the factors were present, then the case was defined as longer antibiotic treatment warranted (LW) group; those without any factors were defined as shorter antibiotic treatment sufficient (SS) group. Poor outcome was defined as a composite of 90-day mortality or 30-day recurrence. Duration of antibiotic administration was classified as <14 or ≥14 days in the SS group and <28 or ≥28 days in the LW group. RESULTS Among 2098 cases, the outcome was analysed in 1866 cases, of which 591 showed poor outcome. The SS group accounted for 964 cases and the LW group for 852. On multivariate analysis, age over 65 years, pneumonia, higher Sequential Organ Failure Assessment (SOFA) score and chronic liver diseases were risk factors for poor outcome. Administration of antibiotics less than the recommendation was associated with poor outcome, but this significance was observed only in the LW group (adjusted odds ratio = 1.68; 95% confidence interval, 1.00-2.83; p 0.05). CONCLUSIONS Inappropriately short antibiotic treatment was associated with poor outcome in the LW group. Vigilant evaluation for risk factors to determine the duration of treatment may improve the outcome among patients with SAB.
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Affiliation(s)
- C-J Kim
- Department of Internal Medicine, Division of Infectious Diseases, Ewha Womans University School of Medicine, Seoul, South Korea
| | - K-H Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seognnam, South Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - K-H Park
- Department of Infectious Diseases, Chonnam National University Hospital, Gwangju, South Korea.
| | - M Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seognnam, South Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea
| | - M-D Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea
| | - S H Lee
- Department of Internal Medicine, Pusan National University School of Medicine and Medical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - H-C Jang
- Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - S-J Kang
- Department of Internal Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - H Y Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - S Cheon
- Division of Infectious Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, South Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, South Korea
| | - H J Choi
- Department of Internal Medicine, Division of Infectious Diseases, Ewha Womans University School of Medicine, Seoul, South Korea
| | - K T Kwon
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - J H Jeon
- Inje University Haeundae Paik Hospital, Busan, South Korea
| | - E S Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seognnam, South Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea.
| | - H B Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seognnam, South Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Park CH, Kim D, Jung H, Jeon JH, Achary R, Lee JY, Kim P, Jung H, Hwang JY, Ryu DH, Du Ha J, Cho SY. Design and Synthesis of Novel 3-(2-Aminopyridin-3-yl)-1,2,4-Triazolo[4,3-b
]Pyridazine Derivatives as a Reversible Bruton's Tyrosine Kinase Inhibitors. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11485] [Citation(s) in RCA: 6] [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: 02/02/2023]
Affiliation(s)
- Chi Hoon Park
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 South Korea
| | - Dukwoon Kim
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Hyeonseok Jung
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Jeong Hee Jeon
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
| | - Raghavendra Achary
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
| | - Joo-Youn Lee
- Korea Chemical Bank; Korea Research Institute of Chemical Technology; Daejeon 305-550 South Korea
| | - Pilho Kim
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 South Korea
| | - Heejung Jung
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
| | - Jong Yeon Hwang
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 South Korea
| | - Do Hyun Ryu
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 South Korea
| | - Jae Du Ha
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
| | - Sung Yun Cho
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 South Korea
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Lee JM, Jeon JH, Moon IS, Choi JY. Benefits of active middle ear implants over hearing aids in patients with sloping high tone hearing loss: comparison with hearing aids. Acta Otorhinolaryngol Ital 2018; 37:218-223. [PMID: 28516965 PMCID: PMC5463512 DOI: 10.14639/0392-100x-1146] [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] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 01/15/2017] [Indexed: 11/24/2022]
Abstract
In this retrospective chart review we compared the subjective and objective benefits of active middle ear implants (AMEIs) with conventional hearing aids (HAs) in patients with sloping high tone hearing loss. Thirty-four patients with sensorineural hearing loss were treated with AMEIs. Of these, six had sloping high tone hearing loss and had worn an HA for more than 6 months. Objective assessments, a pure-tone audiogram, as well as a word recognition test, and the Korean version of the Hearing in Noise Test (K-HINT), and a subjective assessment, the Abbreviated Profile of Hearing Aid Benefit (APHAB) questionnaire, were performed. Tests were conducted under three circumstances: 1) the unaided state before surgery; 2) the HA-aided state before surgery; and 3) the AMEI-aided state 3 months after surgery. The average high-frequency hearing gain (≥ 2 kHz) was significantly better with AMEIs than with HAs. Although the result had no statistical significance, AMEIs showed a superior word recognition score (WRS) compared to HAs. However, the most comfortable hearing level at which the WRS was tested was significantly decreased with an AMEI compared to an HA. In the K-HINT, patients with an AMEI showed greater recognition than those fitted with an HA under both quiet and noisy conditions. The APAHB scores revealed that patients were more satisfied with an AMEI rather than an HA on all subscales. The use of vibroplasty in patients with sloping high tone loss resulted in positive hearing outcomes when compared to conventional HAs. Based on the data from this study, AMEIs provided better objective and subjective results and could, therefore, be a better alternative for the treatment of sloping hearing loss.
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Affiliation(s)
- J M Lee
- Department of Otorhinolaryngology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - J H Jeon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - I S Moon
- 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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Jung SM, Bae JS, Kang SG, Son JS, Jeon JH, Lee HJ, Jeon JY, Sidharthan M, Ryu SH, Shin HW. Acute toxicity of organic antifouling biocides to phytoplankton Nitzschia pungens and zooplankton Artemia larvae. Mar Pollut Bull 2017; 124:811-818. [PMID: 27919420 DOI: 10.1016/j.marpolbul.2016.11.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 11/01/2016] [Accepted: 11/19/2016] [Indexed: 06/06/2023]
Abstract
The toxicity of the antifouling biocides Irgarol 1051, Diuron, Chlorothalonil, Dichlofluanid, Sea-nine 211, Copper pyrithione, Zinc pyrithione, Ziram and Zineb were evaluated on Nitzschia pungens and Artemia larvae. Results showed that EC50 for Irgarol 1051 was 0.586μgl-1 was the strongest effect on N. pungens following by Copper pyrithione (4.908μgl-1), Ziram (5.421μgl-1), Zinc pyrithione (5.513μgl-1), Diuron (6.640μgl-1), Zineb (232.249μgl-1), Sea-nine 211(267.368μgl-1), Chlorothalonil (360.963μgl-1) and Dichlofluanid (377.010μgl-1) in 96h. In Artemia larvae, the biocides were evaluated the LC50 for larval survivals at 48h. Sea-nine 211 and Copper pyrithione were 0.318 and 0.319mgl-1. Chlorothalonil, Zinc pyrithione and Ziram were 2.683, 3.147 and 4.778mgl-1. Irgarol 1051, Diuron, Zineb and Dichlofluanid were 9.734, 30.573, 41.170 and 154.944mgl-1. These results provide baseline data concerning the toxicity of antifouling biocides against marine environment.
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Affiliation(s)
- S M Jung
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - J S Bae
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - S G Kang
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - J S Son
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - J H Jeon
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - H J Lee
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - J Y Jeon
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - M Sidharthan
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - S H Ryu
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea
| | - H W Shin
- Department of Biological Science & Biotechnology, Soonchunhyang University, Asan, South Korea.
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Jeon JH, Seo Young H, Jeon Won K, Kim MS, Lee D, Ryu Seung M, Jang Dae S, Lee J. Chemical constituents from the groundnuts of Apios americana. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608262] [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: 10/18/2022]
Affiliation(s)
- JH Jeon
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea, Republic of (South)
- 2Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul, Korea, Republic of (South)
| | - H Seo Young
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea, Republic of (South)
- 2Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul, Korea, Republic of (South)
| | - K Jeon Won
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea, Republic of (South)
- 2Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul, Korea, Republic of (South)
| | - MS Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea, Republic of (South)
- 2Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul, Korea, Republic of (South)
| | - D Lee
- Department of Biosystems and Biotechnology, Korea University, Seoul, Korea, Republic of (South)
| | - M Ryu Seung
- Department of Biosystems and Biotechnology, Korea University, Seoul, Korea, Republic of (South)
| | - S Jang Dae
- Department of Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Korea, Republic of (South)
| | - J Lee
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Korea, Republic of (South)
- 2Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul, Korea, Republic of (South)
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Oh TK, Jeon JH, Lee JM, Kim MS, Kim JH, Lim H, Kim SE, Eom W. Association of high-dose postoperative opioids with recurrence risk in esophageal squamous cell carcinoma: reinterpreting ERAS protocols for long-term oncologic surgery outcomes. Dis Esophagus 2017; 30:1-8. [PMID: 28859395 DOI: 10.1093/dote/dox074] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 05/23/2017] [Indexed: 12/11/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is associated with a poor prognosis and high postoperative recurrence rate. Although postoperative opioid use has been associated with cancer recurrence, its relevance in ESCC has not been determined. Therefore, this study investigated whether high-dose postoperative opioid use was associated with recurrence risk in patients with ESCC. For this retrospective analysis, the medical records of patients who were diagnosed with ESCC and who underwent surgery between January 2006 and December 2010 in the National Cancer Center, Korea were evaluated. Total opioid administration over a 10-day period, from during surgery to postoperative day 9, was calculated. A cutoff value was determined using receiver operating characteristic curve analysis, and patients were classified into the high-use and low-use groups. The primary and secondary outcomes of the study were freedom from recurrence and overall survival, respectively. After propensity score matching, the effect of opioid use on freedom from recurrence and overall survival was evaluated using the Kaplan-Meier method. The final analysis set included 258 patients. The cumulative opioid dose cutoff point was 1783.5 mg of oral morphine. High-dose postoperative opioid use was a significant factor affecting recurrence (Hazard ratio [HR], 2.162; 95% confidence interval [CI], 1.583-2.954; P < 0.0001). In contrast, postoperative opioid use was not associated with death (HR, 1.274; 95% CI, 0.922-1.761; P = 0.1422). In patients with ESCC, compared with low-dose opioid use, high-dose intraoperative and postoperative opioid use was significantly associated with an increased risk of recurrence. However, opioid dosage did not affect overall survival.
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Affiliation(s)
- T K Oh
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - J H Jeon
- Thoracic Surgery, National Cancer Center, Goyang
| | - J M Lee
- Thoracic Surgery, National Cancer Center, Goyang
| | - M S Kim
- Thoracic Surgery, National Cancer Center, Goyang
| | - J H Kim
- Departments of Anesthesiology and Pain Medicine
| | - H Lim
- Departments of Anesthesiology and Pain Medicine
| | - S-E Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - W Eom
- Departments of Anesthesiology and Pain Medicine
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Park H, Park CH, Kang ST, Jeon JH, Archary R, Lee JY, Kim P, Jung H, Yun CS, Hwang JY, Ryu DH, Cho SY. Design and Synthesis of Novel Pyrazolo[3,4-d]pyrimidin-1-yl piperidine Derivatives as Bruton's Tyrosine Kinase Inhibitors. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hyebin Park
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Chi Hoon Park
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Seung-Tae Kang
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Jeong Hee Jeon
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
| | - Raghavendra Archary
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Joo-Youn Lee
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
| | - Pilho Kim
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Heejung Jung
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Chang-Soo Yun
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Jong Yeon Hwang
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
| | - Do Hyun Ryu
- Department of Chemistry; Sungkyunkwan University; Suwon 440-746 Korea
| | - Sung Yun Cho
- Drug Discovery Division; Korea Research Institute of Chemical Technology; Daejeon 305-606 Korea
- Department of Medicinal and Pharmaceutical Chemistry; University of Science and Technology; Daejeon 305-550 Korea
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Jeon JH, Jeong K, Moon HS. Robot-assisted laparoscopic adenomyomectomy of adenomyotic nodule implanted in the uterine endometrium manifesting as endometrial cancer: a case report and literature review. EUR J GYNAECOL ONCOL 2017; 38:143-146. [PMID: 29767885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Thickened uterine endometrium with abnormal uterine bleeding highly suggests endometrial hyperplasia or endometrial carcinoma. A case of 35-year-old nulliparous woman came to our department with endometrial mass manifesting as endometrial cancer. Transrectal ultrasonography and magnetic resonance imaging (MRI) showed an 8x6 cm multicystic, ill-defined mass compacted at the uterine endometrium, the anterior wall of the uterus, and 3x3 cm heterogenous mass at the left adnexa. The edometrial mass showed multiple septations with enhancement and low-signal intensity on T2-weighted images. After endometrial biopsy was done and simple hyperplasia without atypia was observed at the histopathologic finding, the patient underwent robot-assisted laparoscopy and diagnosed as adenomyoma at the frozen pathology. After adenomyomectomy, permanent pathologic analysis revealed the same result and she recovered without any complications and responded well to gonadotropin-releasing hormone (GnRH) agonist therapy.
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Park D, Jo IG, Jang JY, Kwak TH, Yoo SK, Jeon JH, Choi EK, Joo SS, Kim O, Kim YB. A Dunnione Compound MB12662 Improves Cisplatin-Induced Tissue Injury and Emesis. Biomol Ther (Seoul) 2015; 23:449-57. [PMID: 26336585 PMCID: PMC4556205 DOI: 10.4062/biomolther.2015.034] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 04/29/2015] [Accepted: 05/06/2015] [Indexed: 01/12/2023] Open
Abstract
The present study was aimed to investigate the effects of MB12662, a synthetic dunnione compound, on cisplatin-induced vomiting reflexes and intestinal, renal, immune system, and hematopoietic toxicities in ferrets and mice, respectively. Male ICR mice were orally administered MB12662 (5, 10, 25 or 50 mg/kg) for 10 days, during which intraperitoneally challenged with cisplatin (3.5 mg/kg) from day 4 to 7, and sacrificed on day 10 for the pathological examination. Male ferrets were orally administered MB12662 (25, 50 or 100 mg/kg) for 7 days, subcutaneously challenged with cisplatin (5 mg/kg), and monitored for vomiting reflexes and survival of the animals. Four-day injection of cisplatin (3.5 mg/kg) to mice caused body weight loss and degeneration and atrophy of intestinal villi, reducing villi/crypt ratio to a half level of control animals. Cisplatin also induced renal and hepatic toxicities, and depletion of splenocytes and bone marrow progenitor cells. The systemic toxicities including decreased villi/crypt ratio, immune system atrophy, splenocyte depletion, and decreased cellularity in bone marrow were improved by MB12662. Cisplatin (5 mg/kg) induced retching and emetic responses of ferrets, which were remarkably attenuated by MB12662 in a dose-dependent manner. All the ferrets pretreated with MB12662 survived the challenge of cisplatin, in comparison with 40% mortality in vehicle-treated animals, and blood parameters of nephrotoxicity and hepatotoxicity were markedly recovered. It is expected that MB12662 could be a candidate for the body protection against burden, including emesis, of chemotherapeutic agents.
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Affiliation(s)
- Dongsun Park
- College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763 ; Department of Physiology, Ajou University School of Medicine, Suwon 443-749, Republic of Korea
| | - In Geun Jo
- College of Pharmacy, Advanced Science, Dankook University, Cheonan 330-714
| | - Ja Young Jang
- College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763
| | - Tae Hwan Kwak
- KT&G Life Science Corporation R&D Center, Suwon 443-702
| | - Sang Ku Yoo
- Erum Biotechnologies Incorporation, Suwon 443-380
| | - Jeong Hee Jeon
- College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763
| | - Ehn-Kyoung Choi
- College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763
| | - Seong Soo Joo
- Department of Marine Molecular Biotechnology, College of Life Science, Gangneung-Wonju National University, Gangneung 210-702
| | - Okjin Kim
- College of Natural Resources, Wonkwang University, Iksan 570-749
| | - Yun-Bae Kim
- College of Veterinary Medicine, Chungbuk National University, Cheongju 362-763
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Kang CH, Yun JI, Lee K, Lee CO, Lee HK, Yun CS, Hwang JY, Cho SY, Jung H, Kim P, Ha JD, Jeon JH, Choi SU, Jeong HG, Kim HR, Park CH. Development of potent ALK inhibitor and its molecular inhibitory mechanism against NSCLC harboring EML4-ALK proteins. Biochem Biophys Res Commun 2015; 464:762-7. [PMID: 26168728 DOI: 10.1016/j.bbrc.2015.07.027] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 07/06/2015] [Indexed: 11/16/2022]
Abstract
Here, we show the newly synthesized and potent ALK inhibitor having similar scaffold to KRCA-0008, which was reported previously, and its molecular mechanism against cancer cells harboring EML4-ALK fusion protein. Through ALK wild type enzyme assay, we selected two compounds, KRCA-0080 and KRCA-0087, which have trifluoromethyl instead of chloride in R2 position. We characterized these newly synthesized compounds by in vitro and in vivo assays. Enzyme assay shows that KRCA-0080 is more potent against various ALK mutants, including L1196M, G1202R, T1151_L1152insT, and C1156Y, which are seen in crizotinib-resistant patients, than KRCA-0008 is. Cell based assays demonstrate our compounds downregulate the cellular signaling, such as Akt and Erk, by suppressing ALK activity to inhibit the proliferation of the cells harboring EML4-ALK. Interestingly, our compounds induced strong G1/S arrest in H3122 cells leading to the apoptosis, which is proved by PARP-1 cleavage. In vivo H3122 xenograft assay, we found that KRCA-0080 shows significant reduction in tumor size compared to crizotinib and KRCA-0008 by 15-20%. Conclusively, we report a potent ALK inhibitor which shows significant in vivo efficacy as well as excellent inhibitory activity against various ALK mutants.
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Affiliation(s)
- Chung Hyo Kang
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Jeong In Yun
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Kwangho Lee
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Chong Ock Lee
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Heung Kyoung Lee
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Chang-Soo Yun
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Jong Yeon Hwang
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Sung Yun Cho
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Heejung Jung
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Pilho Kim
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Jae Du Ha
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Jeong Hee Jeon
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Sang Un Choi
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Hyoung Rae Kim
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea.
| | - Chi Hoon Park
- Bio & Drug Discovery Division, Korea Research Institute of Chemical Technology, PO Box 107, Daejeon 305-600, Republic of Korea; Medicinal & Pharmaceutical Chemistry, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
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Kumar S, Ameli-Renani S, Hakim A, Jeon JH, Shrivastava S, Patel U. Ureteral obstruction following renal transplantation: causes, diagnosis and management. Br J Radiol 2014; 87:20140169. [PMID: 25284426 DOI: 10.1259/bjr.20140169] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Renal transplantation, first performed successfully in the 1950s, is the treatment of choice for most patients with end-stage renal failure. It confers longer term survival and a better quality of life than do both haemodialysis and peritoneal dialysis. The success of renal transplantation is dependent on the preservation of renal graft function and despite the many advances in surgical techniques, immunosuppressive regimens and supportive therapies, many challenges remain including post-operative ureteral obstruction. This complication can pose a risk to graft, and, occasionally, to patient survival. In this pictorial review, we describe the causes of ureteral obstruction following renal transplantation and illustrate the pivotal role of radiology in both diagnosing and managing these complications.
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Affiliation(s)
- S Kumar
- 1 Medical School, St George's, University of London, London, UK
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Shin YS, Ro KH, Jeon JH, Lee DH. Graft-bending angle and femoral tunnel length after single-bundle anterior cruciate ligament reconstruction: comparison of the transtibial, anteromedial portal and outside-in techniques. Bone Joint J 2014; 96-B:743-51. [PMID: 24891573 DOI: 10.1302/0301-620x.96b6.33201] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We used immediate post-operative in vivo three-dimensional computed tomography to compare graft bending angles and femoral tunnel lengths in 155 patients who had undergone single-bundle reconstruction of the anterior cruciate ligament using the transtibial (n = 37), anteromedial portal (n = 72) and outside-in (n = 46) techniques. The bending angles in the sagittal and axial planes were significantly greater but the coronal-bending angle was significantly less in the transtibial group than in the anteromedial portal and outside-in groups (p < 0.001 each). The mean length of the femoral tunnel in all three planes was significantly greater in the transtibial group than the anteromedial portal and outside-in groups (p < 0.001 each), but all mean tunnel lengths in the three groups exceeded 30 mm. The only significant difference was the coronal graft- bending angle in the anteromedial portal and outside-in groups (23.5° vs 29.8°, p = 0.012). Compared with the transtibial technique, the anteromedial portal and outside-in techniques may reduce the graft-bending stress at the opening of the femoral tunnel. Despite the femoral tunnel length being shorter in the anteromedial portal and outside-in techniques than in the transtibial technique, a femoral tunnel length of more than 30 mm in the anteromedial portal and outside-in techniques may be sufficient for the graft to heal.
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Affiliation(s)
- Y S Shin
- Seonam Hospital, Department of Orthopaedic Surgery, Seoul, Korea
| | - K H Ro
- Anam Hospital, Department of Orthopaedic Surgery, Korea University, College of Medicine, Seoul, Korea
| | - J H Jeon
- Anam Hospital, Department of Orthopaedic Surgery, Korea University, College of Medicine, Seoul, Korea
| | - D H Lee
- Anam Hospital, Department of Orthopaedic Surgery, Korea University, College of Medicine, Seoul, Korea
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Song JI, Park KH, Jeon JH, Choi HL, Barroga AJ. Dynamics of air temperature, velocity and ammonia emissions in enclosed and conventional pig housing systems. Asian-Australas J Anim Sci 2014; 26:433-42. [PMID: 25049807 PMCID: PMC4093470 DOI: 10.5713/ajas.2011.11515] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 12/27/2011] [Revised: 11/16/2012] [Accepted: 03/24/2012] [Indexed: 11/30/2022]
Abstract
This study aimed to compare the dynamics of air temperature and velocity under two different ventilation and housing systems during summer and winter in Korea. The NH3 concentration of both housing systems was also investigated in relation to the pig’s growth. The ventilation systems used were; negative pressure type for the enclosed pig house (EPH) and natural airflow for the conventional pig house (CPH). Against a highly fluctuating outdoor temperature, the EPH was able to maintain a stable temperature at 24.8 to 29.1°C during summer and 17.9 to 23.1°C during winter whilst the CPH had a wider temperature variance during summer at 24.7 to 32.3°C. However, the temperature fluctuation of the CPH during winter was almost the same with that of EPH at 14.5 to 18.2°C. The NH3 levels in the CPH ranged from 9.31 to 16.9 mg/L during summer and 5.1 to 19.7 mg/L during winter whilst that of the EPH pig house was 7.9 to 16.1 mg/L and 3.7 to 9.6 mg/L during summer and winter, respectively. These values were less than the critical ammonia level for pigs with the EPH maintaining a lower level than the CPH in both winter and summer. The air velocity at pig nose level in the EPH during summer was 0.23 m/s, enough to provide comfort because of the unique design of the inlet feature. However, no air movement was observed in almost all the lower portions of the CPH during winter because of the absence of an inlet feature. There was a significant improvement in weight gain and feed intake of pigs reared in the EPH compared to the CPH (p<0.05). These findings proved that despite the difference in the housing systems, a stable indoor temperature was necessary to minimize the impact of an avoidable and highly fluctuating outdoor temperature. The EPH consistently maintained an effective indoor airspeed irrespective of season; however the CPH had defective and stagnant air at pig nose level during winter. Characteristics of airflow direction and pattern were consistent relative to housing system during both summer and winter but not of airspeed. The ideal air velocity measurement favored the EPH and therefore can be appropriate for the Korean environment. Further emphasis on its cost effectiveness will be the subject of future investigations.
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Affiliation(s)
- J I Song
- National Livestock Research Institute, Rural Development Administration, Suwon, 441-350, Korea
| | - K-H Park
- National Livestock Research Institute, Rural Development Administration, Suwon, 441-350, Korea
| | - J H Jeon
- National Livestock Research Institute, Rural Development Administration, Suwon, 441-350, Korea
| | - H L Choi
- National Livestock Research Institute, Rural Development Administration, Suwon, 441-350, Korea
| | - A J Barroga
- National Livestock Research Institute, Rural Development Administration, Suwon, 441-350, Korea
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Ahn D, Sohn JH, Jeon JH, Jeong JY. Clinical impact of microscopic extrathyroidal extension in patients with papillary thyroid microcarcinoma treated with hemithyroidectomy. J Endocrinol Invest 2014; 37:167-73. [PMID: 24497215 DOI: 10.1007/s40618-013-0025-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 07/29/2013] [Accepted: 11/17/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Pathologically confirmed microscopic extrathyroidal extension (ETE) is often identified after hemithyroidectomy in patients with papillary thyroid microcarcinoma (PTMC). Without the presence of microscopic ETE, these patients would be optimal candidates for hemithyroidectomy. AIM The present study aimed at evaluating the clinical impact of microscopic ETE on the recurrence of PTMC treated with hemithyroidectomy. SUBJECTS AND METHODS We compared the clinicopathological characteristics and 5-year outcomes for 262 PTMC patients without ETE and 86 with microscopic ETE who were treated with hemithyroidectomy between January 2004 and December 2010. RESULTS The mean tumour size was larger (0.67 vs. 0.54 cm, p < 0.001) and the proportion of tumours measuring ≥0.5 cm was higher (84.9 vs. 66.8 %, p = 0.001) in patients with microscopic ETE as compared with patients without ETE. Occult multifocal disease was more frequent in patients with microscopic ETE than in those without ETE (14.0 vs. 6.5 %, p = 0.030). However, the recurrence rate was not different between the two groups during the mean 55.8-month follow-up period. In addition, univariate and multivariate analyses revealed no meaningful association between recurrence and microscopic ETE in patients with PTMC treated with hemithyroidectomy. CONCLUSIONS Although microscopic ETE was associated with large tumour size and multifocal disease, its clinical impact on disease recurrence was not significant in PTMC patients treated with hemithyroidectomy. Therefore, microscopic ETE identified after hemithyroidectomy would not be an absolute indication for completion thyroidectomy in patients with PTMC.
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Affiliation(s)
- D Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
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18
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Lee JH, Ko M, Chae MR, Lee SJ, Kam SC, Park JK, Jeon JH, So I, Lee SW. Radiotelemetric assessment of intracavernosal pressure in apomorphine-induced erection: hypercholesterolemic rats vs normal control. Int J Impot Res 2013; 26:41-4. [DOI: 10.1038/ijir.2013.32] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 04/12/2013] [Accepted: 06/17/2013] [Indexed: 11/09/2022]
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Lee JH, Chae MR, Park JK, Jeon JH, Lee SW. The effects of the combined use of a PDE5 inhibitor and medications for hypertension, lower urinary tract symptoms and dyslipidemia on corporal tissue tone. Int J Impot Res 2012; 24:221-7. [PMID: 22763627 DOI: 10.1038/ijir.2012.19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
ED is closely associated with its comorbidities (hypertension, dyslipidemia and lower urinary tract symptoms (LUTS)). Therefore, several drugs have been prescribed simultaneously with PDE5 inhibitors. If a specific medication for ED comorbidities has enhancing effects on PDE5 inhibitors, it offers alternative combination therapy in nonresponders to monotherapy with PDE5 inhibitors and allows clinicians to treat ED and its comorbidities simultaneously. To establish theoretical basis of choosing an appropriate medication for ED and concomitant disease, we examined the effects combining a PDE5 inhibitor with representative drugs for hypertension, dyslipidemia and LUTS on relaxing the corpus cavernosum of rabbits using the organ-bath technique. The effect of mirodenafil on relaxing phenylephrine-induced cavernosal contractions was significantly enhanced by the presence of 10(-4) M losartan, 10(-6) M nifedipine, 10(-6) M amlodipine, 10(-7) M doxazosin and 10(-9) M tamsulosin (P<0.05). The maximum relaxation effects were 47.2±3.8%, 57.6±2.6%, 64.0±3.7%, 76.1±5.7% and 71.7±5.4%, respectively. Enalapril and simvastatin had no enhancing effects. The relaxation induced by sodium nitroprusside alone (39.0±4.0%) was significantly enhanced in the presence of the 10(-4) M losartan (66.0±6.0%, P<0.05). Tetraethylammonium (1 mM) significantly inhibited the enhancement effects of tamsulosin and doxazosin on mirodenafil-induced relaxation (doxazosin: 76.1±5.7% vs 45.3±2.3%; tamsulosin: 71.7±5.4% vs 48.1±3.5%). On the basis of these findings, losartan seemed to induce synergistic effects through an interaction with nitric oxide. In addition, K(+) channel activation could be one of the mechanisms for the synergistic effect of combining mirodenafil with doxazosin or tamsulosin. We believe that the combination of a PDE5 inhibitor with losartan, nifedipine, amlodipine, doxazosin or tamsulosin could be a pharmacologic strategy for simultaneously treating ED and its comorbidities and increasing response rates to PDE5 inhibitors.
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Affiliation(s)
- J H Lee
- Genitourinary Disease Oriented Translational Research, Seoul, Korea
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Park D, Bae DK, Jeon JH, Lee J, Oh N, Yang G, Yang YH, Kim TK, Song J, Lee SH, Song BS, Jeon TH, Kang SJ, Joo SS, Kim SU, Kim YB. Immunopotentiation and antitumor effects of a ginsenoside Rg₃-fortified red ginseng preparation in mice bearing H460 lung cancer cells. Environ Toxicol Pharmacol 2011; 31:397-405. [PMID: 21787710 DOI: 10.1016/j.etap.2011.01.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Revised: 01/27/2011] [Accepted: 01/29/2011] [Indexed: 05/31/2023]
Abstract
Antitumor effects of a ginsenoside Rg(3)-fortified red ginseng preparation (Rg(3)-RGP) were investigated in human non-small cell lung carcinoma (H460) cells using in vitro cytotoxicity assay and in vivo nude mouse xenograft model. Immunomodulatory effects of the preparation were also assessed by measuring the facilitating activities on the nitric oxide (NO) release from peritoneal macrophages, in vitro and in vivo lymphocyte proliferation, and the carbon clearance from circulating blood. In a cell level, Rg(3)-RGP exerted H460 cytotoxicity and facilitated splenocyte proliferation at very high concentrations, without affecting NO production. However, oral administration of Rg(3)-RGP (100-300 mg/kg) enhanced carbon particle-phagocytic index of blood macrophages up to 360-397% of control value. In addition, Rg(3)-RGP significantly increased the splenocyte proliferation (23% at 100mg/kg). In tumor-bearing mice, 28-day oral treatment with Rg(3)-RGP (100mg/kg) remarkably suppressed the tumor growth, leading to the decrease of the tumor volume and weight by 30-31%, which was comparable to the effect (27-29% reduction) of doxorubicin (2mg/kg at 3-day intervals). While Rg(3)-RGP did not cause adverse effects, intravenous injection of doxorubicin markedly decreased body and testes weights, and exhibited severe depletion of spermatogenic cells in the atrophic seminiferous tubules. These results indicate that Rg(3)-RGP exerts antitumor activities via indirect immunomodulatory actions, without causing adverse effects as seen in doxorubicin.
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Affiliation(s)
- Dongsun Park
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
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Shin S, Joo SS, Jeon JH, Park D, Jang MJ, Kim TO, Kim HK, Hwang BY, Kim KY, Kim YB. Anti-inflammatory effects of a Houttuynia cordata supercritical extract. J Vet Sci 2010; 11:273-5. [PMID: 20706037 PMCID: PMC2924491 DOI: 10.4142/jvs.2010.11.3.273] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [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] [Indexed: 11/20/2022] Open
Abstract
Anti-inflammatory effects of Houttuynia cordata supercritical extract (HSE) were investigated in a carrageenan-air pouch model. HSE (200 mg/kg, oral) suppressed exudation and albumin leakage, as well as inflammatory cell infiltration. Dexamethasone (2 mg/kg, i.p.) only decreased exudation and cell infiltration, while indomethacin (2 mg/kg, i.p.) reduced exudate volume and albumin content. HSE lowered tumor-necrosis factor (TNF)-alpha and nitric oxide (NO), as well as prostaglandin E(2) (PGE(2)). Dexamethasone only reduced TNF-alpha and NO, while indomethacin decreased TNF-alpha and PGE(2). The suppressive activity of HSE on NO and PGE(2) production was confirmed in RAW 264.7. These results demonstrate that HSE exerts anti-inflammatory effects by inhibiting both TNF-alpha-NO and cyclooxygenase II-PGE(2) pathways.
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Affiliation(s)
- Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Korea
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Joo SS, Park D, Shin S, Jeon JH, Kim TK, Choi YJ, Lee SH, Kim JS, Park SK, Hwang BY, Lee DI, Kim YB. Anti-allergic effects and mechanisms of action of the ethanolic extract of Angelica gigas in dinitrofluorobenzene-induced inflammation models. Environ Toxicol Pharmacol 2010; 30:127-133. [PMID: 21787642 DOI: 10.1016/j.etap.2010.04.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2010] [Revised: 04/25/2010] [Accepted: 04/27/2010] [Indexed: 05/31/2023]
Abstract
To confirm the anti-allergic effects of the ethanolic extract of Angelica gigas (EAG), the levels of ear erythema, ear weight, vascular leakage, heamatology, tumor-necrosis factor-α, interleukin-6 and immunoglobulin E from mice sensitized with 2,4-dinitroflurorobenzene were examined. The results showed that EAG reduced ear erythema and ear weight; we also found that Evan's blue leakage decreased. Furthermore, the levels of interleukin-6 and immunoglobulin E in the serum were significantly inhibited. In RAW264.7 cells, EAG drastically inhibited the mRNA levels of inducible nitric oxide synthease, tumor-necrosis factor-α and macrophage inflammatory protein-1β, suggesting that EAG may inhibit the release of pro-inflammatory cytokines and acute neutrophilic inflammation. Western blot analysis showed that EAG inhibited nuclear factor-κB- and extracelullar signal-regulated protein kinase-dependent inflammatory pathways. Interestingly, EAG effectively inhibited the release of β-hexosaminidase, a granule marker from mast cells. Taken together, our results demonstrate that EAG inhibits focal and systemic inflammatory and allergic reactions, and holds great promise for the treatment of several inflammatory diseases.
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Affiliation(s)
- Seong Soo Joo
- Division of Marine Molecular Biotechnology, Gangneung-Wonju National University, Gangneung 210-702, Republic of Korea
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Shin S, Joo SS, Park D, Jeon JH, Kim TK, Kim JS, Park SK, Hwang BY, Kim YB. Ethanol extract of Angelica gigas inhibits croton oil-induced inflammation by suppressing the cyclooxygenase - prostaglandin pathway. J Vet Sci 2010; 11:43-50. [PMID: 20195064 PMCID: PMC2833429 DOI: 10.4142/jvs.2010.11.1.43] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The anti-inflammatory effects of an ethanol extract of Angelica gigas (EAG) were investigated in vitro and in vivo using croton oil-induced inflammation models. Croton oil (20 microg/mL) up-regulated mRNA expression of cyclooxygenase (COX)-I and COX-II in the macrophage cell line, RAW 264.7, resulting in the release of high concentrations of prostaglandin E(2) (PGE(2)). EAG (1 approximately 10 microg/mL) markedly suppressed croton oil-induced COX-II mRNA expression and PGE(2) production. Application of croton oil (5% in acetone) to mouse ears caused severe local erythema, edema and vascular leakage, which were significantly attenuated by oral pre-treatment with EAG (50 approximately 500 mg/kg). Croton oil dramatically increased blood levels of interleukin (IL)-6 and PGE(2) without affecting tumor-necrosis factor (TNF)-alpha and nitric oxide (NO) levels. EAG pre-treatment remarkably lowered IL-6 and PGE(2), but did not alter TNF-alpha or NO concentrations. These results indicate that EAG attenuates inflammatory responses in part by blocking the COX - PGE(2) pathway. Therefore, EAG could be a promising candidate for the treatment of inflammatory diseases.
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Affiliation(s)
- Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
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Shin S, Jeon JH, Park D, Jang JY, Joo SS, Hwang BY, Choe SY, Kim YB. Anti-inflammatory effects of an ethanol extract of Angelica gigas in a Carrageenan-air pouch inflammation model. Exp Anim 2009; 58:431-6. [PMID: 19654443 DOI: 10.1538/expanim.58.431] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Anti-inflammatory effects of an ethanol extract of Angelica gigas (EAG; 50, 160, or 500 mg/kg) were investigated in a carrageenan-induced air pouch inflammation model. Injection of 1 ml of carrageenan (1%) into mouse air pouches markedly increased the exudate volume and exudate albumin concentration, which were significantly attenuated by oral pretreatment with EAG. EAG also markedly reduced carrageenan-induced infiltrations of neutrophils, monocytes, and lymphocytes, but did not influence eosinophils or basophils. Carrageenan dramatically increased levels of tumor necrosis factor-alpha and interleukin-6, which might be derived from the infiltrated cells. It also elevated nitric oxide, and slightly increased prostaglandin E(2). EAG pretreatment significantly lowered tumor necrosis factor-alpha and nitric oxide, but did not alter interleukin-6 or prostaglandin E(2) levels. These results indicate that EAG attenuates some inflammatory responses by blocking the tumor necrosis factor-alpha-nitric oxide pathway, and that EAG could be a promising anti-inflammatory drug candidate for inflammatory diseases.
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Affiliation(s)
- Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine
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Lee HS, Song J, Kim TM, Joo SS, Park D, Jeon JH, Shin S, Park HK, Lee WK, Ly SY, Kim MR, Lee DI, Kim YB. Effects of a preparation of combined glutathione-enriched yeast and rice embryo/soybean extracts on ethanol hangover. J Med Food 2009; 12:1359-67. [PMID: 20041794 DOI: 10.1089/jmf.2008.1367] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The effects of a preparation of combined glutathione-enriched yeast (GEY) and rice embryo/soybean (RES) extracts (20:1), GEY/RES, on experimentally induced ethanol hangover were investigated in male Sprague-Dawley rats. To evaluate the preventive effects on hangover, rats were orally administered GEY/RES (50/2.5, 100/5, or 200/10 mg/kg) for 2 weeks. At 30 minutes after the final treatment, they were challenged with 3 mL/kg ethanol (15 mL of 20% in water/kg). The blood concentrations of alcohol and acetaldehyde were analyzed up to 7 hours postchallenge. Hepatic mRNA expression levels of alcohol-metabolizing enzymes, alcohol dehydrogenase (ADH), cytochrome P450 type 2E1 (CYP2E1), and aldehyde dehydrogenase (ALDH), were determined by real-time polymerase chain reaction. Additional rats were challenged with ethanol and, 60 minutes later, administered GEY/RES to evaluate alcohol clearance. Pretreatment with GEY/RES for 2 weeks reduced the blood concentrations of alcohol and acetaldehyde in a dose-dependent manner, lowering by 29.5% and 54.6% at the highest dose (200/10 mg/kg), respectively. The expressions of mRNAs for ADH and ALDH, the major alcohol-metabolizing enzymes, were markedly increased in the livers of rats administered GEY/RES for 2 weeks, whereas CYP2E1 mRNA was suppressed. Postchallenge treatment with GEY/RES enhanced the alcohol clearance rate by lowering blood concentrations of alcohol and acetaldehyde by 24% and 26.6%, respectively, for the highest dose group. GEY/RES remarkably eliminated 2,2-diphenyl-1-picrylhydrazyl hydrate radical and FeCl(3)-mediated lipid peroxidation in vitro and attenuated hepatic lipid accumulation following ethanol administration in vivo. Therefore, it is suggested that GEY/RES reduces the blood concentrations of alcohol and acetaldehyde not only by modulating alcohol-metabolizing enzymes, but also by exerting its antioxidant activity, and that GEY/RES could be a promising candidate for improvements of alcoholic hangover.
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Affiliation(s)
- Heon-Sik Lee
- LG Household & Health Care Co., Ltd., Seoul, Republic of Korea
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Park D, Jeon JH, Kwon SC, Shin S, Jang JY, Jeong HS, Lee DI, Kim YB, Joo SS. Antioxidative activities of white rose flower extract and pharmaceutical advantages of its hexane fraction via free radical scavenging effects. Biochem Cell Biol 2009; 87:943-52. [DOI: 10.1139/o09-065] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this study, we determined the antioxidant activities of two different solvent fractions(butanol and hexane) obtained from white Rosa rugosa flowers by employing various assays such as 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH), 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, and nitric oxide (NO) scavenging and inhibition activity in S-nitroso-N-acetylpenicillamine (SNAP) in the RAW264.7 model. In addition, more advanced antioxidant assays were conducted, including lipid peroxidation, hydroxyl radical-mediated oxidation, DNA fragmentation, apoptosis, and cell growth. The results revealed that the hexane fraction, which contained a significant amount of polyphenols and volatile components, had excellent antioxidant potency and could scavenge free radicals of DPPH and ABTS. Interestingly, the hexane fraction inhibited lipid peroxidation to almost the same degree as a chemical antioxidant. In the NO assay, the hexane fraction effectively scavenged free radicals at all dose ranges and is expected to inhibit NO production in mammalian cells. The hexane fraction effectively prevented oxidative damage, which was induced by Cu2+/H2O2, to target proteins at lower concentrations (>1 μg·mL–1). The DNA fragmentation and the cell-level assays suggest that the hexane fraction may play a crucial role in inhibiting peroxynitrite and H2O2 attack. Based on the findings described in this study, the hexane fraction holds promise for use as a novel pharmaceutical antioxidant.
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Affiliation(s)
- Dongsun Park
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Jeong Hee Jeon
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Sang-Chul Kwon
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Ja Young Jang
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Heon Sang Jeong
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Do Ik Lee
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Yun-Bae Kim
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
| | - Seong Soo Joo
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- Chamsunjin Total Food Co. Ltd., 373-18 Sangsin-ri, Jincheon-eup, Jincheon-gun, Chungbuk 365-801, Republic of Korea
- College of Agriculture, Life & Environment Sciences, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Republic of Korea
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Jeon JH, Kim SK, Kim HJ, Chang J, Ahn CM, Chang YS. Lipid raft modulation inhibits NSCLC cell migration through delocalization of the focal adhesion complex. Lung Cancer 2009; 69:165-71. [PMID: 19945766 DOI: 10.1016/j.lungcan.2009.10.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [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: 04/22/2009] [Revised: 09/22/2009] [Accepted: 10/24/2009] [Indexed: 11/18/2022]
Abstract
Lipid raft, a specialized membrane structure enriched with cholesterol and glycosphingolipid, contains molecules that convey environmental stimuli to the intracellular systems. Authors investigated the effects of raft cholesterol depletion on non-small cell lung cancer (NSCLC) cell migration. Incubation of NSCLC cells in media containing lovastatin resulted in inhibition of cell migration by 63.1-83.3%, whereas raft cholesterol depletion with successive treatment using methyl-beta cyclodextrin (MbetaCD) followed by lovastatin further suppressed their migration by 35.0-57.8%. Raft cholesterol depletion partially inhibited EGF-induced phosphorylation of EGFR and FAK, however, no change was observed in other molecules comprising focal adhesion complex. It resulted in disappearance of filopodia, inhibition of EGF-induced pY397 FAK aggregation, and its destabilization. Cholesterol depletion inhibited phosphorylation of Src on Y416 in the detergent-insoluble fraction followed by decreased localization of total and pY397 FAK in the detergent-insoluble fraction. Minimal changes in these molecules were observed in the detergent-soluble fraction and interactions between FAK and other molecules of the focal adhesion complex were not influenced. Immunocytochemical analysis confirmed translocation of Src from the raft into cytoplasm and disappearance of EGF-induced membrane ruffling by raft cholesterol depletion. In cholesterol-depleted cells, EGF-induced phosphorylation of Src, Akt, and p44/42 in the detergent-insoluble fraction were inhibited whereas phosphorylation of GSK-3beta was unaffected. We conclude that raft cholesterol depletion inhibited NSCLC migration through inhibition of phosphorylation of raft associated Src and dislocation of molecules comprising focal adhesion complexes from raft rather than by inhibiting their recruitment to Src and interaction.
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Affiliation(s)
- Jeong Hee Jeon
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea
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Choi JH, Shin S, Park D, Jeon JH, Choi BH, Jang MJ, Joo SS, Oh KW, Hong JT, Suh KH, Kim YB. Comparative antihypertensive activities of losartan and HM70186 in rats with hepatic dysfunction. Arch Pharm Res 2009; 32:1005-11. [PMID: 19641881 DOI: 10.1007/s12272-009-1705-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Revised: 05/12/2009] [Accepted: 05/21/2009] [Indexed: 11/25/2022]
Abstract
HM70186, a medoxomil ester of EXP3174 which is an active metabolite of angiotensin II receptor blocker losartan, was synthesized, and its antihypertensive efficacy was evaluated in rats with hepatic dysfunction. Male Wistar rats were intraperitoneally injected with 0.5 mL/kg of carbon tetrachloride to cause hepatic injury, and implanted with an osmotic minipump containing angiotensin II (0.4 mg/kg/day) to induce hypertension. After confirmation of both hepatic damage and hypertension, the rats were orally administered losartan or HM70186, and then blood pressure and heart rate were monitored for 24 h. In normal animals, angiotensin II-induced hypertension was lowered by losartan, resulting in an ED(-30 mmHg) of 9.05 mg/kg. HM70186 also immediately decreased the blood pressure in a dose-dependent manner, exhibiting an ED(-30 mmHg) of 0.89 ng/kg (10,000 times the potency observed with losartan). Moreover, HM70186 (3 ng/kg) exerted a strong antihypertensive effect even in rats with hepatic injury, while losartan (10 microg/kg) was ineffective. These results suggest that HM70186 could be a promising candidate for the treatment of hypertension accompanied by hepatic dysfunction.
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Affiliation(s)
- Jae-Hong Choi
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, 361-763, Korea
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Abstract
The acaricidal activities of compounds derived from the oil of Pelargonium graveolens leaves against the storage food mite, Tyrophagus putrescentiae, were compared with the activity of a commercial acaricide, benzyl benzoate, in an impregnated fabric disk bioassay. Purification of the active constituent from P. graveolens was accomplished by silica gel chromatography and high-performance liquid chromatography. Structural analysis of the active constituent by 1H nuclear magnetic resonance (NMR), 13C-NMR, 1H-13C shift correlated spectroscopy NMR, and distortionless enhancement by polarization transfer NMR identified trans-3,7-dimethyl-2,6-octadien-1-ol (geraniol). Based on the 50% lethal dose values, the most toxic compounds against T. putrescentiae were geraniol (1.95 microg/cm3), which was followed by nerol (2.21 microg/cm3), citral (9.65 microg/cm3), benzyl benzoate (11.27 microg/cm3), and beta-citronellol (15.86 microg/cm3). Our results suggest that geraniol is more effective in controlling T. putrescentiae than benzyl benzoate is. Furthermore, geraniol, which is used as a flavoring for beverages, candies, ice creams, and baked goods and congeners (citral and nerol), may be useful for managing populations of T. putrescentiae.
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Affiliation(s)
- J H Jeon
- Department of Agricultural Chemistry and Institute of Agricultural Science and Technology, College of Agriculture and Life Science, Chonbuk National University, Chonju 561-756, South Korea
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Piao ZH, Yoon SR, Kim MS, Jeon JH, Lee SH, Kim TD, Lee HG, Bae KH, Min JK, Chung SJ, Kim M, Cho YS, Oh DB, Park SY, Chung JW, Choi I. VDUP1 potentiates Ras-mediated angiogenesis via ROS production in endothelial cells. Cell Mol Biol (Noisy-le-grand) 2009; 55 Suppl:OL1096-OL1103. [PMID: 19267992] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 12/29/2008] [Indexed: 05/27/2023]
Abstract
Vitamin D3 up-regulated protein 1 (VDUP1) is a tumor suppressor of which expression is reduced in a variety of cancer cells, and enforced expression inhibits the tumor cell proliferation. It inhibits the activity of thioredoxin, thus contributing cellular ROS generation. Since ROS is a critical factor for angiogenesis, we investigated the role of VDUP1 in angiogenesis and endothelial proliferation. The expression of VDUP1 was upregulated by overexpression of an oncogene, Ras. Enforced expression of VDUP1 increases ROS production and proliferation of Ras-overexpressing endothelial cells. Overexpression of VDUP1 increases the resistance to the anchorage-dependent cell death and tube formation of the Ras-overexpressing endothelial cell. In addition, the removal of ROS by ROS scavenger attenuates the effect of VDUP1 on tube formation. These results suggest that VDUP1 is involved in Ras-mediated angiogenesis via ROS generation in endothelial cells.
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Affiliation(s)
- Z H Piao
- Korea Research Institute of Bioscience and Biotechnology, Stem Cell Research Center, Daejon, Republic of Korea
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Jeon JH, Puleo DA. Formulations for intermittent release of parathyroid hormone (1-34) and local enhancement of osteoblast activities. Pharm Dev Technol 2009; 13:505-12. [PMID: 18720235 DOI: 10.1080/10837450802282488] [Citation(s) in RCA: 8] [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] [Indexed: 10/21/2022]
Abstract
The objective of these studies was to develop simple, implantable devices that intermittently release PTH(1-34) and thus could be used for locally stimulating bone formation. The formulations were based on the association polymer system of cellulose acetate phthalate and Pluronic F-127. Release profiles for intermittent devices showed five discrete peaks, whereas sustained devices exhibited zero-order kinetics. Osteoblastic activity was greater for cells intermittently treated with PTH(1-34) compared to sustained exposure. These controlled release devices delivering PTH(1-34) in an intermittent manner may be useful for affecting osteoblast activities in a localized area.
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Affiliation(s)
- J H Jeon
- Center for Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506-0070, USA
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Park D, Jeon JH, Shin S, Joo SS, Kang DH, Moon SH, Jang MJ, Cho YM, Kim JW, Ji HJ, Ahn B, Oh KW, Kim YB. Green tea extract increases cyclophosphamide-induced teratogenesis by modulating the expression of cytochrome P-450 mRNA. Reprod Toxicol 2009; 27:79-84. [DOI: 10.1016/j.reprotox.2008.11.058] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 11/18/2008] [Accepted: 11/26/2008] [Indexed: 11/28/2022]
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Lee CY, Ahn CM, Jeon JH, Kim HJ, Kim SK, Chang J, Kim SK, Chang YS. Association of Insulin Receptor Substrate-1 G972R Variant with Non-small Cell Lung Cancer Risk. Tuberc Respir Dis (Seoul) 2009. [DOI: 10.4046/trd.2009.67.1.8] [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: 11/24/2022] Open
Affiliation(s)
- Chang Youl Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Chul Min Ahn
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Jeong Hee Jeon
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Jung Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Se Kyu Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
- Cancer Metastasis Research Center, Yonsei University College of Medicine, Seoul, Korea
| | - Joon Chang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Kyu Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Soo Chang
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
- Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
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Lee CY, Jeon JH, Kim HJ, Shin DH, Roh TW, Ahn CM, Chang YS. Clinical significance of insulin-like growth factor-1 receptor expression in stage I non-small-cell lung cancer: immunohistochemical analysis. Korean J Intern Med 2008; 23:116-20. [PMID: 18787363 PMCID: PMC2686961 DOI: 10.3904/kjim.2008.23.3.116] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [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] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND/AIMS The insulin-like growth factor (IGF) system has been implicated in tumor growth, invasion, and metastasis. However, reports on the IGF-1 receptor (IGF-1R) based on radioimmunoassays are conflicting, and its prognostic implications in non-small-cell lung cancer (NSCLC) are still controversial. METHODS Seventy-one paraffin-embedded tissue sections from stage I NSCLC patients were stained using a mouse monoclonal antibody against human IGF-1R. RESULTS The intensity and frequency of IGF-1R expression on the membrane and cytoplasm of cancer cells was evaluated and scored using a semiquantitative system. IGF-1R expression was detected in nine of 71 (12.7%) cases. No significant relationship was found between clinical/histopathological parameters and IGF-1R expression. None of the patients whose tumor expressed IGF-1R had experienced distant metastasis or cancer-related death, although the difference did not reach statistical significance. CONCLUSIONS We conclude that IGF-1R expression may not be a major prognostic factor for stage I NSCLC.
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Affiliation(s)
- Chang Youl Lee
- Department of Internal Medicine, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Jeong Hee Jeon
- Human Barrier Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Jung Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Dong Hwan Shin
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Woong Roh
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Chul Min Ahn
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yoon Soo Chang
- Human Barrier Research Institute, Yonsei University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Jeon JH, Shin S, Park D, Jang JY, Choi BI, Kang JK, Joo SS, Hwang SY, Kim JC, Kim BY, Kim MR, Kim YB. Fermentation Filtrates of Rubus coreanus Relax the Corpus Cavernosum and Increase Sperm Count and Motility. J Med Food 2008; 11:474-8. [DOI: 10.1089/jmf.2007.0070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jeong Hee Jeon
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Dongsun Park
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Ja Young Jang
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Byong-il Choi
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Jong-Koo Kang
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Seong Soo Joo
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Seock-Yeon Hwang
- Department of Clinical Laboratory Science, Juseong College, Chungbuk, Republic of Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | | | - Mee Ree Kim
- Department of Food and Nutrition, Chungnam National University, Daejeon, Republic of Korea
| | - Yun-Bae Kim
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
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Park D, Jeon JH, Shin S, Jang JY, Choi BI, Nahm SS, Kang JK, Hwang SY, Kim JC, Kim YB. Debilitating stresses do not increase blood-brain barrier permeability: Lack of the involvement of corticosteroids. Environ Toxicol Pharmacol 2008; 26:30-37. [PMID: 21783884 DOI: 10.1016/j.etap.2008.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2007] [Revised: 12/24/2007] [Accepted: 01/03/2008] [Indexed: 05/31/2023]
Abstract
The involvement of corticosteroids in stress-induced change in blood-brain barrier (BBB) permeability was investigated. Mice were adrenalectomized and administered with pyridostigmine bromide (PB) or Evan's blue, markers of BBB penetration, followed by 18-h cold-restraint stress (CRS). Rats were administered with mifepristone, a corticosteroid receptor blocker, and the markers, followed by 4-h water immersion-restraint stress (WIRS). Separately, soman was administered to induce seizures-mediated BBB opening. CRS did not induce PB and Evan's blue penetration, which were not affected by adrenalectomy. Also, the markers were not detected in the brain of rats subjected to WIRS, regardless of the treatment of mifepristone. In comparison, 1-h epileptic seizures increased the penetration of Evan's blue by 875%. The results suggest that in contrast to seizure-related BBB opening, profound stresses do not practically increase the BBB permeability, and that corticosteroids are not involved in the stress-induced BBB penetration of charged chemicals and albumin-dye complex.
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Affiliation(s)
- Dongsun Park
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, 410 Seongbongro (Gaeshin-dong), Cheongju, Chungbuk 361-763, Republic of Korea
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Jang JY, Park D, Shin S, Jeon JH, Choi BI, Joo SS, Hwang SY, Nahm SS, Kim YB. Antiteratogenic effect of resveratrol in mice exposed in utero to 2,3,7,8-tetrachlorodibenzo-p-dioxin. Eur J Pharmacol 2008; 591:280-3. [PMID: 18571640 DOI: 10.1016/j.ejphar.2008.05.033] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Received: 01/02/2008] [Revised: 04/21/2008] [Accepted: 05/20/2008] [Indexed: 11/17/2022]
Abstract
The effect of resveratrol, an aryl hydrocarbon receptor antagonist, on the teratogenicity induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) was investigated. Pregnant C57BL/6J mice were orally administered resveratrol (50 mg/kg) for 6 consecutive days, from gestational day (GD) 8 to GD13, followed by an oral challenge with TCDD (14 mug/kg) on GD12. TCDD caused severe fetal malformations including cleft palate (40.7%), renal pelvic dilatation (100%, mean score 3.060), and ureteric dilatation (100%, mean score 3.210) and tortuosity (95.1%). Resveratrol significantly reduced both the incidence of TCDD-induced cleft palate to 18.4% and the degrees of renal pelvic and ureteric dilatations caused by TCDD. The results suggest that pretreatment with resveratrol might bring a beneficial outcome for reducing the incidence and severity of fetal malformations caused by TCDD exposure in utero.
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Affiliation(s)
- Ja Young Jang
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
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Shin S, Jang JY, Choi BI, Baek IJ, Yon JM, Hwang BY, Park D, Jeon JH, Nam SY, Yun YW, Kim YB. Licorice extract does not impair the male reproductive function of rats. Exp Anim 2008; 57:11-7. [PMID: 18256514 DOI: 10.1538/expanim.57.11] [Citation(s) in RCA: 12] [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: 10/31/2022] Open
Abstract
The effect of water extract of licorice (Glycyrrhiza uralensis), one of the most widely used medicinal plants in Oriental nations and in Europe, on male reproductive function was investigated in rats. Licorice extract was prepared as in Oriental clinics and orally administered at doses of 500, 1,000 or 2,000 mg/kg, the upper-limit dose (2,000 mg/kg) recommended in the Toxicity Test guideline of the Korea Food and Drug Administration, to 6-week-old male rats for 9 weeks. Licorice extract neither induced clinical signs, nor affected the daily feed consumption and body weight gain. There were no significant changes in testicular weights, gross and microscopic findings, and daily sperm production between vehicle- and licorice-treated animals, in spite of slight decreases in prostate weight and daily sperm production at the high dose (2,000 mg/kg). In addition, licorice did not affect the motility and morphology of sperm, although the serum testosterone level tended to decrease without significant difference, showing a 28.6% reduction in the high-dose (2,000 mg/kg) group. The results suggest that the no observed adverse-effect level of licorice extract is higher than 2,000 mg/kg, the upper-limit dose, and that long-term exposure to licorice might not cause profound adverse effects.
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Affiliation(s)
- Sunhee Shin
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Cheongju, Chungbuk, Korea
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Jang JY, Shin S, Choi BI, Park D, Jeon JH, Hwang SY, Kim JC, Kim YB, Nahm SS. Antiteratogenic effects of α-naphthoflavone on 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposed mice in utero. Reprod Toxicol 2007; 24:303-9. [PMID: 17889503 DOI: 10.1016/j.reprotox.2007.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2007] [Revised: 08/06/2007] [Accepted: 08/13/2007] [Indexed: 11/25/2022]
Abstract
The effects of alpha-naphthoflavone, an aryl hydrocarbon receptor (AhR) antagonist, on the reproductive toxicity and teratogenicity induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) were investigated. Pregnant C57BL/6J mice were orally administered alpha-naphthoflavone either once on gestational day 12 (GD12; 50 microg/kg) or for 6 days (GD8-GD13; 5 mg/kg/day) followed by an oral challenge with TCDD (14 microg/kg) on GD12. Cesarean section was performed on GD18 for the evaluation of maternal and fetal toxicities. TCDD caused severe fetal malformations including cleft palate (43.7%) and renal pelvic and ureteric dilatations (100%). The administration of alpha-naphthoflavone either in a single treatment or 6-days remarkably reduced the incidence of cleft palate to 27.6% and 26.5%, respectively. In addition, the degree of renal pelvic and ureteric dilatations caused by TCDD were significantly attenuated by repeated treatment of alpha-naphthoflavone. These results suggest that AhR antagonists such as alpha-naphthoflavone could be promising candidates for reducing the incidence and severity of fetal malformations caused by TCDD exposure in utero.
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Affiliation(s)
- Ja Young Jang
- College of Veterinary Medicine, Chungbuk National University, 12 Gaeshindong, Cheongju, Chungbuk, Republic of Korea
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Jeon JH, Park D, Shin S, Kang DH, Moon SH, Kim YB. Effect of green tea and licorice extracts on cyclophosphamide teratogenicity. Reprod Toxicol 2007. [DOI: 10.1016/j.reprotox.2007.04.055] [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: 11/30/2022]
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Ham JH, Yoon CG, Jeon JH, Kim HC. Feasibility of a constructed wetland and wastewater stabilisation pond system as a sewage reclamation system for agricultural reuse in a decentralised rural area. Water Sci Technol 2007; 55:503-11. [PMID: 17305176 DOI: 10.2166/wst.2007.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The performance of a constructed wetland (CW) and wastewater stabilisation pond (WSP) system for sewage reclamation and paddy rice irrigation in a decentralised rural area was examined using a feasibility study. The CW was satisfactory for sewage treatment, with good removal efficiency even in the winter period, but the effluent concentration was relatively high in the winter period owing to the high influent concentration. The CW effluent was further treated in a WSP and the WSP effluent was considered safe for crop irrigation with respect to sewage-borne pathogens. Reclaimed water irrigation did not adversely affect the yield of rice; on the contrary, it resulted in an approximately 50% greater yield than in controls. The chemical characteristics of the soil did not change significantly during the experimental period of irrigation with reclaimed water. In the winter, CW effluent could be stored and treated in a WSP until the spring; the water could then be discharged or reused for supplemental irrigation during the typical Korean spring drought. Overall, sewage treatment and agronomic reuse using a CW-WSP system could be a practical integrated sewage management measure for protecting receiving water bodies and overcoming water shortages in decentralised rural areas.
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Affiliation(s)
- J H Ham
- Department of Environment Science, Konkuk University, 1 Hwayang-dong, Kwangjin-gu, Seoul, Korea.
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Jung KW, Yoon CG, Jang JH, Jeon JH. Characteristics of indicator microorganisms in paddy rice plots after reclaimed water irrigation. Water Sci Technol 2007; 55:267-73. [PMID: 17305149 DOI: 10.2166/wst.2007.020] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A study was performed to examine the effects of reclaimed-water irrigation on microorganism concentration in the ponded-water of paddy rice plots. Several treatments were used and each one was triplicated to evaluate the change of indicator microorganisms (total coliforms (TC), faecal coliforms (FC), and E. coli) concentrations in 2003 and 2004 growing seasons. Their concentrations increased significantly after irrigation, but decreased by approximately 45% in 24 h. It implies that agricultural activities such as ploughing and fertilising need to be practiced one or two days after irrigation, considering health risks. Treatments with UV-disinfected water irrigation, demonstrated significantly lower concentrations than others, including control plots where natural water was irrigated. The monitoring result from actual paddy rice fields and experimental paddy plots showed that concentrations of indicator microorganisms ranged from 10(2) to 10(5) MPN/100 mL. The field scale water reuse research project is in progress and national guidelines for reclaimed-water irrigation are under preparation in Korea. A comprehensive assessment of existing agricultural practices and a thorough monitoring in the fields as well as treatment plots are recommended to make national guidelines more representative.
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Affiliation(s)
- K W Jung
- Department of Environmental Science, Konkuk University, #1 Hwayang-dong, Gwangjin-gu, Seoul, Korea.
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Lee HS, Kim YJ, Bae SS, Jeon JH, Lim JK, Jeong BC, Kang SG, Lee JH. Cloning, expression, and characterization of a methionyl aminopeptidase from a hyperthermophilic archaeon Thermococcus sp. NA1. Mar Biotechnol (NY) 2006; 8:425-32. [PMID: 16761197 DOI: 10.1007/s10126-005-6124-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Accepted: 01/13/2006] [Indexed: 05/10/2023]
Abstract
Genomic analysis of a hyperthermophilic archaeon Thermococcus sp. NA1 revealed the presence of an 885-bp open reading frame encoding a protein of 295 amino acids with a calculated molecular mass of 32,981 Da. Analysis of the deduced amino acid sequence showed that amino acid residues important for catalytic activity and the metal binding ligands conserved in all of methionyl aminopeptidases (MetAP) were also conserved and belonged to type IIa MetAP. The protein, designated TNA1_MetAP (Thermococcus sp. NA1 MetAP), was cloned and expressed in Escherichia coli. The recombinant enzyme was a Mn(2+)-, Ni(2+)-, Fe(2+)-, or Co(2+)-dependent metallopeptidase. Optimal MetAP activity against L: -methionine p-nitroanilide (Met-pNA) (K (m) = 0.68 mM) occurred at pH 7.0 and 80 to 90 degrees C. The MetAP was very unstable compared to Pyrococcus furiosus MetAP, which was completely inactivated by heating at 80 degrees C for 5 min. It seemed likely that the cysteine residue (Cys53) played a critical role in regulating the thermostability of TNA1_MetAP.
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Affiliation(s)
- H S Lee
- Korean Ocean Research & Development Institute, Ansan, P.O. Box 29, Seoul, 425-600, Korea.
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Jeon JH, Yoon CG, Hwang HS, Jung KW. Water quality modeling to evaluate BMPs in rice paddies. Water Sci Technol 2006; 53:253-61. [PMID: 16594344 DOI: 10.2166/wst.2006.059] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
A water quality model applicable to rice paddies was developed using field data from 1999-2002. Use of the Dirac delta function efficiently explained the nutrient-concentration characteristics of ponded water. The model results agreed reasonably well with the observed data. The ponded-water quality was influenced primarily by fertilization; nutrient concentration was especially high during early cultivation periods. Reducing surface drainage during the fertilization period may substantially reduce nonpoint source loading from paddies. Increased weir heights and shallow irrigation methods were evaluated by the model as practical methods for reducing nutrient loading from paddies. These methods were effective in reducing surface drainage and are suggested as "best management practices" (BMPs) if applied based on site-specific paddy conditions.
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Affiliation(s)
- J H Jeon
- Research Division, Korea Environment Institute, 613-2 Bulgwang-dong, Eunpyeong-gu, Seoul 122-706, Korea.
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Jeon JH, Yoon CG, Ham JH, Jung KW. Evaluation of BASINS/WinHSPF applicability for pollutant loading estimation for a Korean watershed. Water Sci Technol 2006; 53:25-32. [PMID: 16532732 DOI: 10.2166/wst.2006.004] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Applicability of a widely accepted watershed-based water quality assessment tool (BASINS) and its associated watershed model (WinHSPF) was evaluated on the Seamangeum watershed in Korea. The study site is the largest polder project area in Korea and its environmental quality has been debated for the last five years. BASINS was found to be a convenient and powerful tool for assessment of watershed characteristics, and provided various tools to delineate the watershed into land segments and river reaches, reclassify land use, and parameterize for WinHSPF simulation. Calibration results were satisfactory showing model efficiency over 0.80 for stream flow, temperature, and dissolved oxygen simulation, and model output for water quality constituents also reasonably matched the observed data. It was demonstrated that calibration with dry-day data for a relatively long period might be adequate to simulate hydrologic characteristics and water quality of the watershed with WinHSPF, and using parameters generated with BASINS for nonpoint source pollution simulation is suggested when enough wet-day monitoring data are not available. The unit-area load of biochemical oxygen demand, total nitrogen, and total phosphorus was 27.8, 48.2, and 4.3 kg/ha/yr, respectively. These values are within the expected range but on the high side of the reported values, which implies that effective control measures are required to protect water quality of the downstream reservoir. Overall, BASINS/WinHSPF was applicable and found to be a powerful tool in pollutant loading estimation from the watershed, and its use in Korea is recommended.
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Affiliation(s)
- J H Jeon
- Korea Envorinment Institute, 613-2 Bulgwang-Dong, Eunpyeong-Gu, Seoul 122-706, Korea.
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Jeon JH, Kim DJ, Han JH, Yeon SC, Bahng SH, Myeong BS, Chang HH. Use of a crush-reducing device to decrease crushing of suckling piglets by sows. J Anim Sci 2005; 83:1397-402. [PMID: 15890817 DOI: 10.2527/2005.8361397x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Weanling pigs tend to avoid wind, and suckling piglets are thought to be more sensitive to wind than weanlings, owing to their thinner s.c. fat layer. We developed a crush-reducing device based on the anticipated behavior of suckling piglets toward wind and evaluated the performance of the device through field testing. The crush-reducing device consisted of six photo sensors, a controller, six solenoid valves, and an air compressor. In this study, 206 sows and their suckling piglets (Landrace xYorkshire) were investigated to ascertain the individual effects of several factors. Some of the newborn piglets were cross-fostered before the crush-reducing device was implemented. Litter weights were measured on d 0 and 4 to determine the influence of the crush-reducing device on the weights of suckling piglets. The crushing of suckling piglets by sows was affected by season (P < 0.01) and litter size (P < 0.05), but not by the parity of the sows; however, the number of crushed piglets per litter was less (P < 0.01) in the crush-reducing device group (0.05 +/- 0.02 crushed piglets/litter) than in the control group (0.23 +/- 0.04 crushed piglets/litter), regardless of litter size or season. The BW gain of suckling piglets did not differ between the control and the crush-reducing device groups. Based on these results, the crush-reducing device is expected to decrease the number of crushed piglets per litter without influencing the BW gain of suckling piglets, thereby greatly contributing to the productivity of pig breeders.
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Affiliation(s)
- J H Jeon
- Division of Applied Life Science, College of Agriculture, Gyeongsang National University, Jinju 660-701, Republic of Korea
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Jeon JH, Yoon CG, Ham JH, Hwang HS. Mass balance analysis and water quality model development for loading estimates from paddy fields. Water Sci Technol 2005; 51:99-105. [PMID: 15850179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Mass balance analysis and water quality model development for paddy field were performed using field experimental data during 2001-2002. About half (47-62%) of the total outflow was lost by surface drainage, with the remainder (490-530 mm) occurring by evapotranspiration. Most of nutrient inflow and outflow were mediated by fertilization and plant uptake, respectively. Nutrient outflow by surface drainage runoff was substantial about 15%-29% for T-N and 6%-13% for T-P. However, the responses of yield and drainage outflow to fertilization were not significant in this study. A water quality model applicable to paddy fields was developed and it demonstrates good agreement with observed data. The nutrient concentration of ponded water was high by fertilization at early culture periods, so reducing surface drainage during fertilization period can reduce nutrient loading from paddy fields. Shallow irrigation, raising the weir height in diked rice fields, and minimizing forced surface drainage are suggested to reduce surface drainage outflow.
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Affiliation(s)
- J H Jeon
- Konkuk Univ., 1 Hwayang-dong, Kwangjin-gu, Seoul 143-701, Korea.
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Joung YH, Youm JW, Jeon JH, Lee BC, Ryu CJ, Hong HJ, Kim HC, Joung H, Kim HS. Expression of the hepatitis B surface S and preS2 antigens in tubers of Solanum tuberosum. Plant Cell Rep 2004; 22:925-930. [PMID: 15048583 DOI: 10.1007/s00299-004-0775-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2003] [Revised: 01/28/2004] [Accepted: 01/28/2004] [Indexed: 05/24/2023]
Abstract
In an attempt to develop an edible vaccine, we transformed a recombinant hepatitis B virus (HBV) gene encoding the middle protein of HBV that contains the surface S and preS2 antigen into potato by Agrobacterium-mediated transformation. The HBV gene was under control of either the CaMV 35S promoter, the double 35S promoter with the AlMV 5' non-translated leader sequence, or the tuber-specific patatin promoter. HBV mRNA levels were higher with the 35S promoter than with the double 35S and patatin promoters; however, the levels of the S and preS2 antigen in the transformed tubers were higher with the patatin promoter than with the CaMV 35S and double promoters. The levels of preS2 antigen produced are the highest reported to date. Transgenic potato tubers were fed to mice, and the mice showed an immune response against the HBV S antigen.
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Affiliation(s)
- Y H Joung
- Plant Genomics Laboratory, Korea Research Institute of Bioscience and Biotechnology, Yusung-Gu, P.O. Box 115, Taejeon, South Korea
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Jeon JH, Kim YS, Choi EJ, Cheon S, Kim S, Kim JS, Jang JS, Ha WS, Park ST, Park CS, Park K, Park BK. Implication of co-measured platelet factor 4 in the reliability of the results of the plasma transforming growth factor-beta 1 measurement. Cytokine 2001; 16:102-5. [PMID: 11741350 DOI: 10.1006/cyto.2001.0895] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/22/2022]
Abstract
We examined the possible alteration of circulating transforming growth factor-beta1 (TGF-beta1) concentrations in a time-dependent fashion in human plasma. Plasma TGF-beta1 was measured three times at 2 week-intervals from each of 12 healthy participants. Platelet factor 4 (PF4) was measured in parallel with TGF-beta1 to estimate the degree of platelet degranulation. TGF-beta1 levels of the second and third plasma samples, in which PF4s were measured as < approximately 1000 IU/ml, were relatively low and fell in a narrow range. However, TGF-beta1 levels of the first samples, in most of which PF4s were > approximately 1000 IU/ml, appeared much higher and more variable than those of the second or third samples. These results indicate that the platelet degranulation accounted for the higher TGF-beta1 levels in the first samples, and thus did not support our initial assumption. We, nevertheless, could propose a useful guidance in the assessment of TGF-beta1 levels in plasma. When the PF4 level is measured as < approximately 1000 IU/ml under our assay conditions, the TGF-beta1 level in a given plasma sample might be accepted as a reliable value considering the effect of platelet degranulation on TGF-beta1 level.
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Affiliation(s)
- J H Jeon
- Department of Neurobiology, Gyeongsang National University Graduate School, Chinju 660-702, Korea
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