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Kwon OD. Association of limb length with cognitive decline in elderly. Alzheimers Dement 2020. [DOI: 10.1002/alz.041417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Oh Dae Kwon
- Catholic University of Daegu School of Medicine Daegu Korea
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Choi JH, Lee JY, Jeon B, Koh SB, Yoon WT, Lee HW, Kwon OD, Kim JW, Kim JM, Ma HI, Kim HT, Baik JS, Cho JW. Neuropsychiatric Traits Associated with Refractory Impulse Control Disorder in Parkinson's Disease. NEURODEGENER DIS 2020; 19:171-177. [PMID: 32454490 DOI: 10.1159/000507447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 03/20/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Impulse control disorder (ICD) in Parkinson's disease (PD) is a critical nonmotor symptom with personality or neuropsychiatric traits contributing to ICD. OBJECTIVE This study aimed to identify predictive traits for persistent or paradoxical aggravation of ICD after dopamine agonist substitution therapy for ICD in PD. METHODS We conducted a case-control study using a database of a multicenter intervention trial for ICD in PD. The poor-outcome group was defined by showing paradoxical increases in ICD behaviors after the substitution of dopamine agonists with levodopa. We analyzed the pre-intervention personality traits associated with the poor outcome and also evaluated the risk traits for refractory ICD using a receiver-operating characteristic (ROC) curve analysis. RESULTS The poor-outcome group showed higher levels of anger expression (p =0.007) and obsessive-compulsive traits (p =0.009) compared with the good-outcome group at the pre-intervention state. In the ROC curve analysis, the Obsessive-Compulsive Inventory showed the highest area under the curve with 80.0% sensitivity and 74.3% specificity in discriminating against the poor-outcome group. CONCLUSIONS Our results suggest that assessment of obsessive compulsiveness may be useful for predicting the refractoriness of ICD behaviors in planning an interventional treatment for ICD in PD.
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Affiliation(s)
- Ji-Hyun Choi
- Department of Neurology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jee-Young Lee
- Department of Neurology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea,
| | - Beomseok Jeon
- Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seong-Beom Koh
- Department of Neurology, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Won Tae Yoon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ho-Won Lee
- Department of Neurology, School of Medicine, Kyungpook National University, and Brain Science and Engineering Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Oh Dae Kwon
- Department of Neurology, Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - Jae Woo Kim
- Department of Neurology, Dong-A University Hospital, Pusan, Republic of Korea
| | - Jong-Min Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Hyeo-Il Ma
- Department of Neurology, Hallym University Hospital, Anyang, Republic of Korea
| | - Hee Tae Kim
- Department of Neurology, Hanyang University Medical Center, Seoul, Republic of Korea
| | - Jong Sam Baik
- Department of Neurology, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Jin Whan Cho
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Lee JY, Jeon B, Koh SB, Yoon WT, Lee HW, Kwon OD, Kim JW, Kim JM, Ma HI, Kim HT, Baik JS, Cho J. Behavioural and trait changes in parkinsonian patients with impulse control disorder after switching from dopamine agonist to levodopa therapy: results of REIN-PD trial. J Neurol Neurosurg Psychiatry 2019; 90:30-37. [PMID: 30361296 DOI: 10.1136/jnnp-2018-318942] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 09/06/2018] [Accepted: 09/23/2018] [Indexed: 11/03/2022]
Abstract
OBJECTIVE In this multicentre open-label trial, we compared behavioural and neuropsychiatric symptoms in Parkinson's disease (PD) patients with impulse control disorders (ICD) treated with dopamine agonists before and 12 weeks after substituting dopamine agonists with an equivalent dose of levodopa/carbidopa slow-release formulation. METHODS Baseline characteristics of 50 PD patients with ICD were compared with those of 60 medicated and 40 drug-naive PD control groups. Neuropsychiatric trait changes in the PD-ICD group were investigated 12 weeks after the intervention. ICD behaviours were assessed via modified Minnesota Impulsive Disorders Interview (mMIDI), whereas parkinsonian severity and neuropsychiatric characters were systematically assessed with the Unified PD Rating Scale (UPDRS) and a predefined neuropsychological assessment battery. RESULTS At baseline, ICD patients showed higher scores in the Neuropsychiatric Inventory and anxiety, anger and obsessive-compulsive traits compared with both PD control groups. In contrast, the three PD groups showed indifference in the impulsivity scales. At 12 weeks post intervention, ICD behaviours significantly improved (p<0.001, Δ modified MIDI score=‒5.27 ± 5.75) along with the UPDRS II daily activity scores (p=0.02, Δ=‒2.07 ± 4.53). Behavioural disinhibition tended to improve (p=0.06), although no significant changes were observed in the Neuropsychiatric Inventory and personality trait scores. Dopamine agonist withdrawal syndrome developed in 5.3% of the PD-ICD group. CONCLUSIONS This study provides class IV evidence suggesting that switching from dopamine agonists to levodopa/carbidopa slow-release formulations alleviated ICD behaviours in PD patients leading to improvement in daily activities whereas neuropsychiatric traits associated with ICD persisted after the 12-week therapy. TRIAL REGISTRATION NUMBER NCT01683253.
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Affiliation(s)
- Jee-Young Lee
- Department of Neurology, Seoul National University Boramae Hospital, Seoul, South Korea
| | - Beomseok Jeon
- Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Seong-Beom Koh
- Department of Neurology, Korea University Guro Hospital, Seoul, South Korea
| | - Won Tae Yoon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Ho-Won Lee
- Department of Neurology, School of Medicine, Kyungpook National University, and Brain Science and Engineering Institute, Kyungpook National University, Daegu, South Korea
| | - Oh Dae Kwon
- Department of Neurology, Daegu Catholic University Medical Center, Daegu, South Korea
| | - Jae Woo Kim
- Department of Neurology, Dong-A University Hospital, Pusan, South Korea
| | - Jong-Min Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Hyeo-Il Ma
- Department of Neurology, Hallym University Hospital, Anyang, South Korea
| | - Hee-Tae Kim
- Department of Neurology, Hanyang University Medical Center, Seoul, South Korea
| | - Jong Sam Baik
- Department of Neurology, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - Jinwhan Cho
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, and Neuroscience Center, Samsung Medical Center, Seoul, South Korea
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Kwon OD, Choi SY, Bae J. Association of head circumference with cognitive decline and symptoms of depression in elderly: a 3-year prospective study. Yeungnam Univ J Med 2018; 35:205-212. [PMID: 31620595 PMCID: PMC6784694 DOI: 10.12701/yujm.2018.35.2.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/21/2018] [Accepted: 11/27/2018] [Indexed: 11/04/2022] Open
Abstract
Background Methods Results Conclusion
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Affiliation(s)
- Oh Dae Kwon
- Department of Neurology, Catholic University of Daegu School of Medicine, Daegu, Korea
- Corresponding Author: Oh Dae Kwon, Department of Neurology, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu 42472, Korea Tel: +82-53-650-4298, Fax: +82-53-654-9786 E-mail:
| | - So-Young Choi
- Department of Neurology, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Jisuk Bae
- Department of Preventive Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
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Kwon OD, Park JA. P1‐553: FACTORS ASSOCIATED WITH DEPRESSIVE MOOD AND ANXIETY IN CAREGIVERS FOR DEMENTED PATIENTS. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Oh Dae Kwon
- Catholic University of Daegu School of MedicineDaeguRepublic of South Korea
| | - Jung A. Park
- Daegu Catholic University Medical CenterDaeguRepublic of South Korea
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Choi H, Yang Y, Han HJ, Jeong JH, Park MY, Kim YB, Jo KD, Choi JY, Kang KH, Kang H, Kwon DY, Yoo BG, Lee HJ, Shin BS, Jeon SM, Kwon OD, Kim JS, Lee SJ, Kim Y, Park TH, Kim YJ, Yang HJ, Park HY, Shin HE, Lee JS, Jung YH, Lee AY, Shin DI, Shin KJ, Park KH. Observational Study of Clinical and Functional Progression Based on Initial Brain MRI Characteristics in Patients with Alzheimer's Disease. J Alzheimers Dis 2018; 66:1721-1730. [PMID: 30452413 PMCID: PMC6294580 DOI: 10.3233/jad-180565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND Magnetic resonance imaging (MRI) is a useful tool to predict the diagnosis and progression of Alzheimer's disease (AD), especially for primary physicians. However, the correlation between baseline MRI findings and AD progression has not been fully established. OBJECTIVE To investigate the correlation between hippocampal atrophy (HA) and white matter hyperintensities (WMH) on initial brain MRI images and the degree of cognitive decline and functional changes over 1 year. METHODS In this prospective, 12-month observational study, dementia outpatients were recruited from 29 centers across South Korea. Baseline assessments of HA and WMH on baseline brain MRI were derived as well as cognitive function, dementia severity, activities of daily living, and acetylcholinesterase inhibitor (AChEI) use. Follow-up assessments were conducted at 6 and 12 months. RESULTS Among 899 enrolled dementia patients, 748 were diagnosed with AD of whom 654 (87%) were taking AChEIs. Baseline WMH showed significant correlations with age, current alcohol consumption, and Clinical Dementia Rating score; baseline HA was correlated with age, family history, physical exercise, and the results of cognitive assessments. Among the AChEI group, changes in the Korean version of the Instrumental Activities of Daily Living (K-IADL) were correlated with the severity of HA on baseline brain MRI, but not with the baseline severity of WMH. In the no AChEI group, changes in K-IADL were correlated with the severity of WMH and HA at baseline. CONCLUSION Baseline MRI findings could be a useful tool for predicting future clinical outcomes by primary physicians, especially in relation to patients' functional status.
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Affiliation(s)
- Hojin Choi
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - YoungSoon Yang
- Department of Neurology, Ewha Womans University, Mokdong Hospital, Seoul, Korea
| | - Hyun Jeong Han
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jee Hyang Jeong
- Department of Neurology, Gangneung Asan Hospital, Gangneung, Korea
| | - Mee Young Park
- Department of Neurology, Konkuk University Chungju Hospital, Chunju, Korea
| | - Yong Bum Kim
- Department of Neurology, Kyungpook National University Medical Center, Daegu, Korea
| | - Kwang Deog Jo
- Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jin-Yong Choi
- Department of Neurology, Korea University Ansan Hospital, Ansan, Korea
| | - Kyung-Hun Kang
- Department of Neurology, Kosin University College of Medicine, Busan, Korea
| | - Heeyoung Kang
- Department of Neurology, Gwangju Veterans Hospital, Gwangju, Korea
| | - Do-Young Kwon
- Department of Neurology, Chonbuk National University Medical School, Jeonju, Chonbuk, Korea
| | | | - Hyun Jin Lee
- Department of Neurology, School of Medicine, Catholic University of Daegu, Daegu, Korea
| | | | - Sung-Man Jeon
- Department of Neurology, Eulji University College of Medicine, Daejeon, Korea
| | - Oh Dae Kwon
- Department of Neurology, Myongji Hospital, Goyang, Korea
| | - Jin-Suk Kim
- Samsung Changwon Hospital, Changwon, Seoul, Korea
| | - Soo-Joo Lee
- Department of Neurology, Seoul Medical Center, Seoul, Korea
| | | | - Tai-Hwan Park
- Department of Neurology, Yeungnam University College of Medicine, Daegu, Korea
| | - Young Jin Kim
- Department of Neurology, Ulsan University Hospital, Ulsan, Korea
| | - Hui-Jun Yang
- Department of Neurology, Institute of Wonkwang Medical Science, Wonkwang University School of Medicine, Iksan, Korea
| | - Hyun-Young Park
- Department of Neurology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hae-Eun Shin
- Department of Neurology, Cheju National University Hospital, Jeju, Korea
| | - Jung Seok Lee
- Department of Neurology, SVH Medical Center, Seoul, Korea
| | - Yo Han Jung
- Department of Neurology, Changwon Fatima Hospital, Changwon, Seoul, Korea
| | - Ae Young Lee
- Department of Neurology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Dong-Ick Shin
- Department of Neurology, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Kyong Jin Shin
- Department of Neurology, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Kee Hyung Park
- Department of Neurology, College of Medicine, Gachon University Gil Hospital, Incheon, Korea
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VanBik D, Lee SH, Seo MG, Jeon BR, Goo YK, Park SJ, Rhee MH, Kwon OD, Kim TH, Geraldino PJL, Kwak D. Borrelia Species Detected in Ticks Feeding on Wild Korean Water Deer (Hydropotes inermis) Using Molecular and Genotypic Analyses. J Med Entomol 2017; 54:1397-1402. [PMID: 28549151 DOI: 10.1093/jme/tjx106] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Indexed: 06/07/2023]
Abstract
Lyme borreliosis is a vector-borne disease transmitted through the bite of ticks infected by Borrelia burgdorferi sensu lato group, including B. burgdorferi sensu stricto, B. afzelii, and B. garinii. The goal of the present study was to detect Borrelia species in ticks infesting wild Korean water deer (KWD; Hydropotes inermis Swinhoe), using molecular and genotypic analyses. In total, 48 ticks were collected from KWD, all of which were morphologically identified as Haemaphysalis longicornis Neumann that is dominant in Korea. Nested PCR was performed to detect the Borrelia-specific 5S (rrf)-23S (rrl) intergenic spacer region and the outer surface protein A (ospA) genes in ticks. Both rrf-rrl and ospA were amplified from one of the 48 ticks (2.1%) and were identified as B. afzelii. To our knowledge, this study constitutes the first molecular detection of B. afzelii in Haemaphysalis ticks in Korea. Because B. afzelii is a zoonotic tick-borne pathogen, understanding the molecular characteristics of this bacterium is important for preventing the transmission of Borrelia from ticks to other animals and humans.
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Affiliation(s)
- D VanBik
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - S H Lee
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
- Animal and Plant Quarantine Agency, Gimcheon, Gyeongbuk, Korea
| | - M G Seo
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
- Animal and Plant Quarantine Agency, Gimcheon, Gyeongbuk, Korea
| | - B R Jeon
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - Y K Goo
- Department of Parasitology and Tropical Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - S J Park
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - M H Rhee
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - O D Kwon
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - T H Kim
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
| | - P J L Geraldino
- Department of Biology, College of Arts and Sciences, University of San Carlos, Cebu, Philippines
| | - D Kwak
- College of Veterinary Medicine, Kyungpook National University, Daegu, Korea
- Cardiovascular Research Institute, Kyungpook National University, Daegu, Korea
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Park KW, Kim EJ, Han HJ, Shim YS, Kwon JC, Ku BD, Park KH, Yi HA, Kim KK, Yang DW, Lee HW, Kang H, Kwon OD, Kim S, Lee JH, Chung EJ, Park SW, Park MY, Yoon B, Kim BC, Seo SW, Choi SH. Efficacy and tolerability of rivastigmine patch therapy in patients with mild-to-moderate Alzheimer's dementia associated with minimal and moderate ischemic white matter hyperintensities: A multicenter prospective open-label clinical trial. PLoS One 2017; 12:e0182123. [PMID: 28786987 PMCID: PMC5546604 DOI: 10.1371/journal.pone.0182123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/12/2017] [Indexed: 12/04/2022] Open
Abstract
Background and objective Studies investigating the impact of white matter hyperintensities (WMHs) on the response of acetylcholinesterase inhibitors in patients with Alzheimer’s disease (AD) have presented inconsistent results. We aimed to compare the effects of the rivastigmine patch between patients with AD with minimal WMHs and those with moderate WMHs. Methods Three hundred patients with mild to moderate AD were enrolled in this multicenter prospective open-label study and divided into two groups. Group 1 comprised patients with AD with minimal WMHs and group 2 comprised those with moderate WMHs. The patients were treated with a rivastigmine patch for 24 weeks. Efficacy measures were obtained at baseline and after 24 weeks. The primary endpoint was the change in the AD Assessment Scale-Cognitive subscale (ADAS-Cog) from the baseline to the end of the study. Results Of the 300 patients, there were 206 patients in group 1 and 94 patients in group 2. The intention-to-treat group comprised 198 patients (group 1, n = 136; group 2, n = 46) during the 24-week study period. Demographic factors did not differ between group 1 and group 2. There were no significant differences in change in ADAS-cog between group 1 (-0.62±5.70) and group 2 (-0.23±5.98) after the 24-week rivastigmine patch therapy (p = 0.378). The patients in group 1 had a 0.63-point improvement from baseline on the Frontal Assessment Battery, while group 2 had a 0.16-point decline compared to baseline at the end of the study (p = 0.037). The rates of adverse events (AEs) (42.6 vs. 40.3%) and discontinuation due to AEs (10.3% vs. 4.3%) did not differ between the groups. Conclusions Although the efficacy and tolerability of rivastigmine patch therapy were not associated with WMH severity in patients with AD, some improvement in frontal function was observed in those with minimal WMHs. Trial registration ClinicalTrials.gov NCT01380288
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Affiliation(s)
- Kyung Won Park
- Department of Neurology, Cognitive Disorders and Dementia Center, Dong-A University College of Medicine and Institute of Convergence Bio-Health, Busan, South Korea
| | - Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital and Biomedical Research Institute, Pusan National University School of Medicine, Busan, South Korea
| | - Hyun Jeong Han
- Department of Neurology, Seonam University College of Medicine, Myongji Hospital, Goyang, South Korea
| | - Yong S. Shim
- Department of Neurology, Holy Family Hospital, The Catholic University of Korea, School of Medicine, Bucheon, South Korea
| | - Jae C. Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, South Korea
| | - Bon D. Ku
- Department of Neurology, Catholic Kwandong University College of Medicine, Gangneung, South Korea
| | - Kee Hyung Park
- Department of Neurology, Gachon University Gil Hospital, Incheon, South Korea
| | - Hyon-Ah Yi
- Department of Neurology, Keimyung University College of Medicine, Daegu, South Korea
| | - Kwang K. Kim
- Department of Neurology, Dongguk University College of Medicine, Seoul, South Korea
| | - Dong Won Yang
- Department of Neurology, The Catholic University of Korea, School of Medicine, Seoul, South Korea
| | - Ho-Won Lee
- Department of Neurology, Kyungpook National University School of Medicine, Daegu, South Korea
| | - Heeyoung Kang
- Department of Neurology, Gyeongsang National University College of Medicine, Jinju, South Korea
| | - Oh Dae Kwon
- Department of Neurology, Catholic University of Daegu School of Medicine, Daegu, South Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jae-Hyeok Lee
- Department of Neurology, Pusan National University Yangsan Hospital, Yangsan, South Korea
| | - Eun Joo Chung
- Department of Neurology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - Sang-Won Park
- Department of Neurology, Daegu Fatima Hospital, Daegu, South Korea
| | - Mee Young Park
- Department of Neurology, Yeungnam University College of Medicine, Daegu, South Korea
| | - Bora Yoon
- Department of Neurology, Konyang University College of Medicine, Daejeon, South Korea
| | - Byeong C. Kim
- Department of Neurology, Chonnam National University School of Medicine, Gwangju, South Korea
| | - Sang Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, South Korea
- * E-mail:
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Jeong WI, Do SH, Sohn MH, Yun HS, Kwon OD, Kim TH, Jeong DH, Williams BH, Jeong KS. Hepatocellular Carcinoma with Metastasis to the Spleen in a Holstein Cow. Vet Pathol 2016; 42:230-2. [PMID: 15753480 DOI: 10.1354/vp.42-2-230] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Hepatocellular carcinoma (HCC) with metastasis to the spleen in a Holstein cow was studied by histopathologic and immunohistochemical methods. The tumor was characterized by a pseudoglandular (acinar) pattern with an associated fibrous stroma. Individual cells often had a “hepatoid” appearance but were interspersed with scattered cells exhibiting a clear, periodic acid-Schiff (PAS)-positive cytoplasm and small eccentric nuclei. This pattern was present in nodules found in both liver and spleen. Moreover, hepatoid tumor cells were positive for alpha-fetoprotein. Immunohistochemical studies suggest that myofibroblasts were responsible for the production of fibrous septa surrounding the pseudoglandular structures of bovine HCC. In summary, our histologic and immunohistochemical findings support a diagnosis of primary HCC with splenic metastasis. Furthermore, the associated stromal response appears to be of a myofibroblast origin. The primary etiology of bovine HCC and the significance of the intralesional, PAS-positive clear cells remain undetermined.
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Affiliation(s)
- W I Jeong
- College of Veterinary Medicine, Kyungpook National University, Daegu City 702-701, South Korea
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Kwon OD, Yoon U, Na DL. P1‐244: EFFECT OF ILLITERACY ON COGNITION AND CEREBRAL MORPHOLOGY IN LATER LIFE. Alzheimers Dement 2014. [DOI: 10.1016/j.jalz.2014.05.483] [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: 10/24/2022]
Affiliation(s)
- Oh Dae Kwon
- Daegu Catholic University Medical Center, Catholic University of DaeguDaeguSouth Korea
| | - Uicheul Yoon
- Department of Biomedical EngineeringCatholic University of DaeguHayangSouth Korea
| | - Duk L. Na
- Samsung Medical Center, Sungkyunkwan University School of MedicineSeoulSouth Korea
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Abstract
Delayed morphologic and metabolic change of organophosphate intoxication is rarely reported than those of acute episode. The patient was a 52-year-old woman who had a history of acute organophosphate intoxication, which paralyzed her for one week when she was 25 years old. She recovered slowly to near normal after one year. After 22 years of the acute episode, tremor developed in 2007 followed by bradykinesia, rigidity, and postural instabilities. Brain MRI showed linear atrophy in bilateral striatal area and multiple cysts in anterior caudate nucleus. F-18 fluorodeoxyglucose positron emission tomography revealed multiple hypometabolic areas in bilateral striatum, cerebellar hemisphere, and occipital area.
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Affiliation(s)
- Oh Dae Kwon
- Department of Neurology, School of medicine, Catholic University of Daegu, Daegu, Korea
| | - Ho Kyun Kim
- Department of Radiology, School of medicine, Catholic University of Daegu, Daegu, Korea
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Affiliation(s)
- Jun-Mo Park
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hoon Jung
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Oh Dae Kwon
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong Wook Hong
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kwak
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
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Kwon OD. P2‐193: Lack of association of anthropometric measures with cognitive decline and depressive symptoms in an elderly rural community. Alzheimers Dement 2012. [DOI: 10.1016/j.jalz.2012.05.899] [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: 10/28/2022]
Affiliation(s)
- Oh Dae Kwon
- Daegu Catholic University Medical CenterCatholic University of DaeguDaeguSouth Korea
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Ryu HG, Youn SW, Kwon OD. Lack of Association between Apolipoprotein E Polymorphism with Age at Onset of Subcortical Vascular Dementia. Dement Geriatr Cogn Dis Extra 2012; 2:1-9. [PMID: 22323902 PMCID: PMC3270811 DOI: 10.1159/000335494] [Citation(s) in RCA: 5] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND PURPOSE The relationship between apolipoprotein E (ApoE) and onset of vascular dementia remains controversial. The aim of this study was to evaluate the relationship between ApoE polymorphism and the onset of subcortical vascular dementia (SVaD) compared to Alzheimer's disease (AD) and normal controls. METHODS The study was comprised of 61 patients with SVaD (42 Binswanger type, 19 lacunar type) and 112 patients with AD (16 early-onset AD, 96 late-onset AD) as well as 284 age-, gender- and education-matched normal controls. The diagnosis of SVaD was based on modified NINDS-AIREN criteria, and the diagnosis of AD was based on NINCDS-ADRDA criteria. ApoE polymorphism was genotyped in all participants. RESULTS None of the three ApoE alleles was more prevalent in SVaD patients compared to normal controls, which was the case when both Binswanger and lacunar types were analyzed separately. ApoE ∊4 did not accelerate the onset of SVaD (OR 1.66, 95% CI: 0.8-3.4), in contrast to a significant relation with late-onset AD (OR 3.78, 95% CI: 2.2-6.5). CONCLUSION Our results suggest that ApoE polymorphism is not associated with the onset of SVaD and that the two subtypes of SVaD may share similar pathophysiologies.
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Affiliation(s)
- Hye Guk Ryu
- Department of Biological Science, College of Natural Sciences, Daegu University, Daegu, South Korea
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Affiliation(s)
- Oh Dae Kwon
- Department of Neurology, School of Medicine, Catholic University of Daegu, Daegu, South Korea.
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Kwon OD, Cho SS, Seo SW, Na DL. Effect of Illiteracy on Neuropsychological Tests and Glucose Metabolism of Brain in Later Life. J Neuroimaging 2011; 22:292-8. [DOI: 10.1111/j.1552-6569.2011.00618.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Kwon OD, Khaleeq A, Chan W, Pavlik VN, Doody RS. Apolipoprotein E polymorphism and age at onset of Alzheimer's disease in a quadriethnic sample. Dement Geriatr Cogn Disord 2011; 30:486-91. [PMID: 21252542 DOI: 10.1159/000322368] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/22/2010] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The relationship between the apolipoprotein E (ApoE) genotype and the risk for developing Alzheimer's disease (AD) or age at onset of AD is relatively well established in Caucasians, but less established in other ethnicities. We examined the association between the ApoE genotype and age at onset of AD in a quadriethnic group of community-dwelling AD patients. METHODS AD patients were evaluated at 2 university-based outpatient memory disorder clinics. The ethnic distribution was as follows: Caucasians (n = 1,083), Hispanics (n = 55), African Americans (n = 84) and Koreans (n = 87). All were diagnosed with probable AD according to NINCDS-ADRDA diagnostic criteria. RESULTS After adjusting for ethnicity, the ε4 allele was significantly associated with earlier age at onset (p < 0.0001) for the combined group. Within ethnic groups, the effect of Apo ε4 on age at onset was significant in Caucasians (p < 0.0001) and African Americans (p < 0.05), but nonsignificant in Koreans (p = 0.43) and in the smaller Hispanic (p = 0.07) group. CONCLUSIONS The association between Apo ε4 and younger age at onset was significant in Caucasians and African Americans, where the ε4 allele was also most frequent. This study suggests that the impact of ApoE polymorphism on age at onset of AD may be different among distinct ethnic groups.
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Affiliation(s)
- Oh Dae Kwon
- Alzheimer's Disease and Memory Disorders Center, Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
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Ryu HG, Kwon OD. Apolipoprotein E epsilon 4 allele is not associated with age at onset or MMSE of Parkinson’s disease in a Korean study. Parkinsonism Relat Disord 2010; 16:615-7. [DOI: 10.1016/j.parkreldis.2010.06.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Revised: 06/21/2010] [Accepted: 06/30/2010] [Indexed: 10/19/2022]
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Kwon OD, Ki CS. Preserved glucose metabolism of deep cerebellar nuclei in a case of multiple system atrophy with predominant cerebellar ataxia: f-18 fluorodeoxyglucose positron emission tomography study. J Mov Disord 2010; 3:51-3. [PMID: 24868383 PMCID: PMC4027670 DOI: 10.14802/jmd.10014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 10/19/2010] [Indexed: 11/24/2022] Open
Abstract
The cerebellar glucose metabolism of multiple system atrophy with predominant cerebellar ataxia (MSA-C) is known to be decreased but is not defined among areas of cerebellum. We encountered a 54-year-old man who developed dizziness and progressive ataxia followed by urinary incontinence and orthostatic hypotension, all of those symptoms progressed relentlessly and the symptoms responded poorly to levodopa therapy. Visual analysis and statistical parametric mapping analysis of F-18 fluorodeoxyglucose positron emission tomography showed hypometabolism of both cerebellar hemisphere, severe at cortical area, and pons. There was clear sparing of deep cerebellar nuclei. Our report, as we know, shows the first case of preserved glucose metabolism of deep cerebellar nuclei relative to cerebellar cortex in an MSA-C patient.
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Affiliation(s)
- Oh Dae Kwon
- Department of Neurolgy, School of Medicine, Catholic University of Daegu, Daegu Catholic University Medical Center, Daegu, Korea
| | - Chang-Seok Ki
- Department of Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kwon OD, Ryu HG. P4‐106: Polymorphism of Apolipoprotein E in RElation with Alzheimer's and Subcortical Vascular Dementia. Alzheimers Dement 2010. [DOI: 10.1016/j.jalz.2010.08.164] [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)
- Oh Dae Kwon
- Daegu Catholic University Medical Center School of Medicine Catholic University of DaeguDaegu Korea, Republic of
| | - Hye Guk Ryu
- Department of Biological Science College of Natural Sciences Daegu UniversityDaegu Korea, Republic of
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Kwon JC, Kim EG, Kim JW, Kwon OD, Yoo BG, Yi HA, Choi NC, Ahn SY, Lee BH, Kang MJ, Choi DS. A multicenter, open-label, 24-week follow-up study for efficacy on cognitive function of donepezil in Binswanger-type subcortical vascular dementia. Am J Alzheimers Dis Other Demen 2009; 24:293-301. [PMID: 19383979 PMCID: PMC10846217 DOI: 10.1177/1533317509334960] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To evaluate the efficacy and tolerability of donepezil in patients with Binswanger type subcortical vascular dementia. METHODS Patients (n = 34, mean age = 71.8 + 7.12) with Binswanger type subcortical vascular dementia from 8 multicenter, according to clinical and neuroradiological working criteria, were selected to receive donepezil 5 mg/day (n = 2) or donepezil 10 mg/day (n = 32, after 5 mg/day) for 24 weeks. Our primary endpoints were change from baseline to weeks 12 and 24 in the Seoul Neuropsychological Screening Battery-Dementia version (SNSB-D) and the Korean version of neuropsychiatric inventory (K-NPI). RESULTS A total of 24 patients received donepezil completed the study (mean age = 72.0 + 7.5 K-Mini-Mental State Examination [MMSE] = 21.0 + 5.1). After 12 weeks and 24 weeks, patients showed improvements in cognitive function on the SNSB-D compared baseline of 16.29 points at 12 weeks (P < .05) and 12.44 points at 24 weeks (P < .05). Significant improvements were shown in only memory domain, immediate verbal recall and delayed recall tests. Subgroup with better cognitive function (SNSB-D > 100) were more effective in frontal and memory domains than the other subgroup (SNSB-D < 100). Withdrawal rates due to adverse events were very low (4.16%). CONCLUSIONS Donepezil-treated patients with Binswanger type subcortical vascular dementia demonstrated significant improvement in cognition compared with baseline, and donepezil was well tolerated.
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Affiliation(s)
- Jay Cheol Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, GyeongNam, 641-560, South Korea.
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Kwon OD, Hwang SJ, Lee JH, Kim JE, Kim KJ, Seo EJ. A familial case report of paroxysmal kinesigenic dyskinesia in three brothers. Korean J Pediatr 2007. [DOI: 10.3345/kjp.2007.50.7.694] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Oh Dae Kwon
- Department of Neurology, School of Medicine, Catholic University of Daegu, Daegu, Korea
| | - Sung Jin Hwang
- Department of Pediatrics, College of Medicine, Sungkyunkwan University, Masan Samsung Hospital, Masan, Korea
| | - Jun Hwa Lee
- Department of Pediatrics, College of Medicine, Sungkyunkwan University, Masan Samsung Hospital, Masan, Korea
| | - Ji Eun Kim
- Department of Neurology, School of Medicine, Catholic University of Daegu, Daegu, Korea
| | - Kyung Jib Kim
- Department of Neurology, School of Medicine, Catholic University of Daegu, Daegu, Korea
| | - Eul Ju Seo
- Department of Laboratory Medicine, University of Ulsan College of medicine and Asan Medical Center, Seoul, Korea
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Kwon OD, Park H. P1–134: The differences of hypometabolic area and neuropsychological abnormalities between transient global amnesia and Alzheimers' disease: A PET study. Alzheimers Dement 2006. [DOI: 10.1016/j.jalz.2006.05.510] [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: 10/24/2022]
Affiliation(s)
- Oh Dae Kwon
- Daegu Catholic Medical CenterDaeguRepublic of Korea
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Noh DH, Jeong WI, Lee CS, Jung CY, Chung JY, Jee YH, Do SH, An MY, Kwon OD, Williams BH, Jeong KS. Multiple Congenital Malformation in a Holstein Calf. J Comp Pathol 2003; 129:313-5. [PMID: 14554130 DOI: 10.1016/s0021-9975(03)00044-6] [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: 10/27/2022]
Abstract
A 10-day-old male Holstein dairy calf with orthopaedic abnormalities was unable to stand but was alert with a suckle reflex. At necropsy, the calf showed multiple defects, including partial agenesis of the left rib plate, deformed left scapula, shortened left humerus, agenesis of the left kidney, atresia ani and scoliosis. The cause of these anomalies could not be determined. This report is the first to describe partial agenesis of ribs in a calf.
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Affiliation(s)
- D H Noh
- College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, South Korea
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Chae JS, Kwon OD, Holman PJ, Waghela SD, Wagner GG, Lee JM. Identical small subunit ribosomal RNA gene nucleotide sequence of bovine Theileria isolates (Korea and Japan) and Theileria buffeli (Marula, Kenya). Korean J Parasitol 1998; 36:47-53. [PMID: 9529863 DOI: 10.3347/kjp.1998.36.1.47] [Citation(s) in RCA: 3] [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: 11/23/2022]
Abstract
Small subunit ribosomal RNA (SSU rRNA) gene nucleotide sequences of bovine Theileria isolates from Korea (KLS and KCB) and Japan (JHS) were determined. The genes from each isolate were amplified by the polymerase chain reaction and the approximately 1.8 kb product cloned and sequenced by a modified dideoxynucleotide method. Overlapping gene segments produced with a series of primers were sequenced, resulting in a complete DNA sequence for both forward and reverse strands of the SSU rRNA genes of each isolate. SSU rRNA gene sequences (termed Type A) were identical among the bovine Theileria isolates from Korea and the isolate from Japan. A GenBank data library homology search showed the sequence to be the same as that listed as Theileria buffeli isolated from cattle in Marula, Kenya.
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Affiliation(s)
- J S Chae
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A & M University, College Station 77843, USA
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Yim CY, McGregor JR, Kwon OD, Bastian NR, Rees M, Mori M, Hibbs JB, Samlowski WE. Nitric oxide synthesis contributes to IL-2-induced antitumor responses against intraperitoneal Meth A tumor. J Immunol 1995; 155:4382-90. [PMID: 7594598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
IL-2 therapy is a potent inductive stimulus for nitric oxide (NO.) synthesis in mice and humans. It is not yet clear whether NO. can contribute to IL-2-induced therapeutic responses. The murine skin cancer Meth A is relatively resistant to lymphokine-activated killer (LAK) cell killing, allowing evaluation of the role of IL-2-induced NO. synthesis in vivo, without contribution by LAK cells. Subcutaneous IL-2 treatment of mice bearing i.p. Meth A tumor increased nitrite production by cells derived from ascites (63 +/- 14 microM vs 3.2 +/- 1.5 microM in untreated controls). N omega-monomethyl-L-arginine (MLA), NO. synthase inhibitor, prevented this increase. NO. production correlated in an inverse fashion with tumor cell proliferation in vitro. Evidence for IL-2-induced heme nitrosylation was demonstrated in tumor cells by electron paramagnetic resonance spectroscopy. By immunomagnetic depletion experiments, macrophages were implicated as a major source of NO. synthesis. Cytologic and flow-cytometric evaluation revealed that IL-2 treatment resulted in enhanced lymphocyte and macrophage recruitment into malignant ascites, and decreases in tumor cell recovery. MLA administration further increased host cell recovery. Subcutaneous IL-2 therapy increased urinary nitrate excretion up to eightfold in mice, and appeared to produce a significant survival advantage that was prevented by MLA administration.
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Affiliation(s)
- C Y Yim
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
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Yim CY, McGregor JR, Kwon OD, Bastian NR, Rees M, Mori M, Hibbs JB, Samlowski WE. Nitric oxide synthesis contributes to IL-2-induced antitumor responses against intraperitoneal Meth A tumor. The Journal of Immunology 1995. [DOI: 10.4049/jimmunol.155.9.4382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
IL-2 therapy is a potent inductive stimulus for nitric oxide (NO.) synthesis in mice and humans. It is not yet clear whether NO. can contribute to IL-2-induced therapeutic responses. The murine skin cancer Meth A is relatively resistant to lymphokine-activated killer (LAK) cell killing, allowing evaluation of the role of IL-2-induced NO. synthesis in vivo, without contribution by LAK cells. Subcutaneous IL-2 treatment of mice bearing i.p. Meth A tumor increased nitrite production by cells derived from ascites (63 +/- 14 microM vs 3.2 +/- 1.5 microM in untreated controls). N omega-monomethyl-L-arginine (MLA), NO. synthase inhibitor, prevented this increase. NO. production correlated in an inverse fashion with tumor cell proliferation in vitro. Evidence for IL-2-induced heme nitrosylation was demonstrated in tumor cells by electron paramagnetic resonance spectroscopy. By immunomagnetic depletion experiments, macrophages were implicated as a major source of NO. synthesis. Cytologic and flow-cytometric evaluation revealed that IL-2 treatment resulted in enhanced lymphocyte and macrophage recruitment into malignant ascites, and decreases in tumor cell recovery. MLA administration further increased host cell recovery. Subcutaneous IL-2 therapy increased urinary nitrate excretion up to eightfold in mice, and appeared to produce a significant survival advantage that was prevented by MLA administration.
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Affiliation(s)
- C Y Yim
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - J R McGregor
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - O D Kwon
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - N R Bastian
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - M Rees
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - M Mori
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - J B Hibbs
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
| | - W E Samlowski
- Department of Internal Medicine (Hematology/Oncology), Chonbuk National University Medical School, Korea
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Samlowski WE, Yim CY, McGregor JR, Kwon OD, Gonzales S, Hibbs JB. Effectiveness and toxicity of protracted nitric oxide synthesis inhibition during IL-2 treatment of mice. J Immunother Emphasis Tumor Immunol 1995; 18:166-78. [PMID: 8770772 DOI: 10.1097/00002371-199510000-00004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The current study was designed to characterize nitric oxide (NO.) synthesis during interleukin-2 (IL-2) treatment of mice, and to determine whether NO. mediated IL-2-induced "vascular leak." We developed a technique for chronic subcutaneous infusion of the NO. synthase inhibitor N omega monomethyl-L-arginine (MLA) via osmotic minipump to aid in further study of these processes. After IL-2 administration to C3H/HeN mice (180,000 IU i.p. b.i.d. for 5 days), NO. synthesis increased two-to-three fold, peaking on days 5-8. Administration of MLA reduced NO. synthesis in both IL-2-treated mice (from 2.7 to 1 microM/mouse/day), and normal mice (from 1 to 0.5 microM/mouse/day). This agent decreased IL-2-induced radiolabeled albumin accumulation in the liver after i.p. IL-2 administration (p < 0.02). MLA infusions resulted in minimal systemic toxicity in mice, as reflected by complete blood counts or serum chemistries. MLA also did not impair lymphokine-activated killer cell induction in vitro or in vivo, or alter IL-2-induced tumor responses in a 3-day pulmonary metastasis model. These experiments demonstrated that NO. is a mediator involved in the genesis of vascular permeability induced by IL-2 treatment. Studies designed to further evaluate the toxicity and usefulness of MLA infusions to modify this IL-2 induced toxicity appear to be warranted.
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Affiliation(s)
- W E Samlowski
- University of Utah Cancer Immunotherapy Program, University of Utah School of Medicine, Salt Lake City, USA
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