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Seriramulu VP, Suppiah S, Lee HH, Jang JH, Omar NF, Mohan SN, Ibrahim NSN, Azmi NHM, Buhari I, Ahmad U. Review of MR spectroscopy analysis and artificial intelligence applications for the detection of cerebral inflammation and neurotoxicity in Alzheimer's disease. Med J Malaysia 2024; 79:102-110. [PMID: 38287765] [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: 01/31/2024]
Abstract
INTRODUCTION Magnetic resonance spectroscopy (MRS) has an emerging role as a neuroimaging tool for the detection of biomarkers of Alzheimer's disease (AD). To date, MRS has been established as one of the diagnostic tools for various diseases such as breast cancer and fatty liver, as well as brain tumours. However, its utility in neurodegenerative diseases is still in the experimental stages. The potential role of the modality has not been fully explored, as there is diverse information regarding the aberrations in the brain metabolites caused by normal ageing versus neurodegenerative disorders. MATERIALS AND METHODS A literature search was carried out to gather eligible studies from the following widely sourced electronic databases such as Scopus, PubMed and Google Scholar using the combination of the following keywords: AD, MRS, brain metabolites, deep learning (DL), machine learning (ML) and artificial intelligence (AI); having the aim of taking the readers through the advancements in the usage of MRS analysis and related AI applications for the detection of AD. RESULTS We elaborate on the MRS data acquisition, processing, analysis, and interpretation techniques. Recommendation is made for MRS parameters that can obtain the best quality spectrum for fingerprinting the brain metabolomics composition in AD. Furthermore, we summarise ML and DL techniques that have been utilised to estimate the uncertainty in the machine-predicted metabolite content, as well as streamline the process of displaying results of metabolites derangement that occurs as part of ageing. CONCLUSION MRS has a role as a non-invasive tool for the detection of brain metabolite biomarkers that indicate brain metabolic health, which can be integral in the management of AD.
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Affiliation(s)
- V P Seriramulu
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia
| | - S Suppiah
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia.
| | - H H Lee
- METLiT Inc., Seoul, Republic of Korea
| | - J H Jang
- METLiT Inc., Seoul, Republic of Korea
| | - N F Omar
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia
| | - S N Mohan
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Psychiatry, 43400 Serdang, Selangor, Malaysia
| | - N S N Ibrahim
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia
| | - N H M Azmi
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia
| | - I Buhari
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Radiology, 43400 Serdang, Selangor, Malaysia
| | - U Ahmad
- Bauchi State University, Faculty of Basic Medical Sciences, Department of Anatomy, Molecular Genetics Informatics, Gadau, Nigeria
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Wang CT, Xu JC, Chan KC, Lee HH, Tso CY, Lin CSK, Chao CYH, Fu SC. Infection control measures for public transportation derived from the flow dynamics of obstructed cough jet. J Aerosol Sci 2022; 163:105995. [PMID: 35382445 PMCID: PMC8971108 DOI: 10.1016/j.jaerosci.2022.105995] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
During the COVID-19 pandemic, WHO and CDC suggest people stay 1 m and 1.8 m away from others, respectively. Keeping social distance can avoid close contact and mitigate infection spread. Many researchers suspect that suggested distances are not enough because aerosols can spread up to 7-8 m away. Despite the debate on social distance, these social distances rely on unobstructed respiratory activities such as coughing and sneezing. Differently, in this work, we focused on the most common but less studied aerosol spread from an obstructed cough. The flow dynamics of a cough jet blocked by the backrest and gasper jet in a cabin environment was characterized by the particle image velocimetry (PIV) technique. It was proved that the backrest and the gasper jet can prevent the front passenger from droplet spray in public transportation where maintaining social distance was difficult. A model was developed to describe the cough jet trajectory due to the gasper jet, which matched well with PIV results. It was found that buoyancy and inside droplets almost do not affect the short-range cough jet trajectory. Infection control measures were suggested for public transportation, including using backrest/gasper jet, installing localized exhaust, and surface cleaning of the backrest.
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Affiliation(s)
- C T Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - J C Xu
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - K C Chan
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - H H Lee
- Department of Energy and Environment, City University of Hong Kong, Hong Kong, China
| | - C Y Tso
- Department of Energy and Environment, City University of Hong Kong, Hong Kong, China
| | - Carol S K Lin
- Department of Energy and Environment, City University of Hong Kong, Hong Kong, China
| | - Christopher Y H Chao
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
- Department of Building Environment and Energy Engineering & Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - S C Fu
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
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Teng JLL, Wernery U, Lee HH, Fung J, Joseph S, Li KSM, Elizabeth SK, Fong JYH, Chan KH, Chen H, Lau SKP, Woo PCY. Co-circulation of a Novel Dromedary Camel Parainfluenza Virus 3 and Middle East Respiratory Syndrome Coronavirus in a Dromedary Herd With Respiratory Tract Infections. Front Microbiol 2021; 12:739779. [PMID: 34956112 PMCID: PMC8705932 DOI: 10.3389/fmicb.2021.739779] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/05/2021] [Indexed: 11/13/2022] Open
Abstract
Since the emergence of Middle East Respiratory Syndrome (MERS) in 2012, there have been a surge in the discovery and evolutionary studies of viruses in dromedaries. Here, we investigated a herd of nine dromedary calves from Umm Al Quwain, the United Arab Emirates that developed respiratory signs. Viral culture of the nasal swabs from the nine calves on Vero cells showed two different types of cytopathic effects (CPEs), suggesting the presence of two different viruses. Three samples showed typical CPEs of Middle East respiratory syndrome (MERS) coronavirus (MERS-CoV) in Vero cells, which was confirmed by partial RdRp gene sequencing. Complete genome sequencing of the three MERS-CoV strains showed that they belonged to clade B3, most closely related to another dromedary MERS-CoV isolate previously detected in Dubai. They also showed evidence of recombination between lineages B4 and B5 in ORF1ab. Another three samples showed non-typical CPEs of MERS-CoV with cell rounding, progressive degeneration, and detachment. Electron microscopy revealed spherical viral particles with peplomers and diameter of about 170nm. High-throughput sequencing and metagenomic analysis showed that the genome organization (3'-N-P-M-F-HN-L-5') was typical of paramyxovirus. They possessed typical genome features similar to other viruses of the genus Respirovirus, including a conserved motif 323FAPGNYALSYAM336 in the N protein, RNA editing sites 5'-717AAAAAAGGG725-3', and 5'-1038AGAAGAAAGAAAGG1051-3' (mRNA sense) in the P gene with multiple polypeptides coding capacity, a nuclear localization signal sequence 245KVGRMYSVEYCKQKIEK261 in the M protein, a conserved sialic acid binding motif 252NRKSCS257 in the HN protein, conserved lengths of the leader (55nt) and trailer (51nt) sequences, total coding percentages (92.6–93.4%), gene-start (AGGANNAAAG), gene-end (NANNANNAAAAA), and trinucleotide intergenic sequences (CTT, mRNA sense). Phylogenetic analysis of their complete genomes showed that they were most closely related to bovine parainfluenza virus 3 (PIV3) genotype C strains. In the phylogenetic tree constructed using the complete L protein, the branch length between dromedary camel PIV3 (DcPIV3) and the nearest node is 0.04, which is >0.03, the definition used for species demarcation in the family Paramyxoviridae. Therefore, we show that DcPIV3 is a novel species of the genus Respirovirus that co-circulated with MERS-CoV in a dromedary herd in the Middle East.
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Affiliation(s)
- Jade Lee Lee Teng
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ulrich Wernery
- Central Veterinary Research Laboratory, Dubai, United Arab Emirates
| | - Hwei Huih Lee
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Joshua Fung
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Sunitha Joseph
- Central Veterinary Research Laboratory, Dubai, United Arab Emirates
| | - Kenneth Sze Ming Li
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | | | - Jordan Yik Hei Fong
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Kwok-Hung Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Honglin Chen
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Susanna Kar Pui Lau
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Patrick Chiu Yat Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Teng JLL, Fong JYH, Fok KMN, Lee HH, Chiu TH, Tang Y, Ngan AHY, Wong SSY, Que TL, Lau SKP, Woo PCY. Tsukamurella asaccharolytica sp. nov., Tsukamurella conjunctivitidis sp. nov. and Tsukamurella sputi sp. nov., isolated from patients with bacteraemia, conjunctivitis and respiratory infection in Hong Kong. Int J Syst Evol Microbiol 2020; 70:995-1006. [PMID: 31738158 DOI: 10.1099/ijsem.0.003861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Three bacterial strains, HKU70T, HKU71T and HKU72T, were isolated from the conjunctival swab, blood and sputum samples of three patients with conjunctivitis, bacteraemia and respiratory infection, respectively, in Hong Kong. The three strains were aerobic, Gram-stain positive, catalase-positive, non-sporulating and non-motile bacilli and exhibited unique biochemical profiles distinguishable from currently recognized Tsukamurella species. 16S rRNA, secA, rpoB and groEL gene sequence analyses revealed that the three strains shared 99.6-99.9, 94.5-96.8, 95.7-97.8 and 97.7-98.9 % nucleotide identities with their corresponding closest Tsukamurella species respectively. DNA-DNA hybridization confirmed that they were distinct from other known species of the genus Tsukamurella (26.2±2.4 to 36.8±1.2 % DNA-DNA relatedness), in line with results of in silico genome-to-genome comparison (32.2-40.9 % Genome-to-Genome Distance Calculator and 86.3-88.9 % average nucleotide identity values]. Fatty acids, mycolic acids, cell-wall sugars and peptidoglycan analyses showed that they were typical of members of Tsukamurella. The G+C content determined based on the genome sequence of strains HKU70T, HKU71T and HKU72T were 69.9, 70.2 and 70.5 mol%, respectively. Taken together, our results supported the proposition and description of three new species, i.e. Tsukamurella sputi HKU70T (=JCM 33387T=DSM 109106T) sp. nov., Tsukamurella asaccharolytica HKU71T (=JCM 33388T=DSM 109107T) sp. nov. and Tsukamurella conjunctivitidis HKU72T (=JCM 33389T=DSM 109108T) sp. nov.
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Affiliation(s)
- Jade L L Teng
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Jordan Y H Fong
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Kenny M N Fok
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Hwei Huih Lee
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Tsz Ho Chiu
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Ying Tang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Antonio H Y Ngan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Samson S Y Wong
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China
| | - Tak-Lun Que
- Department of Pathology, Tuen Mun Hospital, Hong Kong, PR China
| | - Susanna K P Lau
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China
| | - Patrick C Y Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China
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5
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Lee HH, Faundez L, Yarbrough C, Lewis CW, LoSasso AT. Patterns in Pediatric Dental Surgery under General Anesthesia across 7 State Medicaid Programs. JDR Clin Trans Res 2020; 5:358-365. [PMID: 32040927 DOI: 10.1177/2380084420906114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Children's access to dental general anesthesia (DGA) is limited, with highly variable wait times. Access factors occur at the levels of facility, dental provider, and anesthesia provider. It is unknown if these factors also influence utilization of dental surgery. We characterized patterns in DGA utilization by system, provider, population, and individual disease levels to explain variation. METHODS We conducted a cross-sectional analysis of Medicaid-enrolled children (≤9 y) who received DGA in Massachusetts, Maryland, Texas, Connecticut, Washington, Illinois, and Florida from 2011 to 2012. DGA events were characterized by the place of service, measures of disease burden, average reimbursements for dental provider and anesthesia provider, and average total expenditures. RESULTS A total of 10,149,793 children met study eligibility criteria. States with similar patterns of caries-related visits, such as Illinois (16% of Medicaid enrollees had a caries-related claim) and Washington (22%), had different DGA rates (1% and 17%, respectively). Reimbursement rates for dental providers, DGA services, and nonhospital places of services did not consistently align in states with higher DGA rates. Surgical extraction rates, as a proxy for the most severe disease, exceeded 75% in Maryland, which had the lowest DGA rate (0.3%). CONCLUSIONS Variation in DGA rates across states was not explained by reimbursements rates (provider, DGA services, place of service) or population or individual level of caries burden. Efforts to evaluate and alter utilization of DGA should consider factors such as dental and anesthesia provider capacity, health facility capacity (hospital vs. ambulatory surgery center vs. office), and population- and individual-level disease burden. Our negative findings suggest the presence of other social determinants of oral health that influence utilization of services (e.g., race/ethnicity, language preference, immigration status, policy and budget goals), which should be explored. Our findings also raise the specter that variation in surgical rates may represent instances of unmet needs or overtreatment. KNOWLEDGE TRANSFER STATEMENT The results of this study can be used by clinicians and policy makers as they address policy and clinical interventions to influence children with severe caries. Interventions to change utilization of surgical services on a population level may need to include state-specific factors that extend beyond reimbursement, disease burden, anesthesia provider type, or facility type.
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Affiliation(s)
- H H Lee
- Department of Anesthesiology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - L Faundez
- Department of Economics, University of Illinois at Chicago, Chicago, IL, USA
| | - C Yarbrough
- Illinois Health and Hospital Association, Chicago, IL, USA
| | - C W Lewis
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - A T LoSasso
- Department of Economics, DePaul University, Chicago, IL, USA
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Lee HH, Kim KH, Kim HY. Development and control of a hybrid active mount module for precision stages. Rev Sci Instrum 2020; 91:026101. [PMID: 32113380 DOI: 10.1063/1.5122806] [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] [Received: 07/31/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
In recent years, precision stages, which are widely used in many industrial fields, have been required to have a higher speed, larger size, and higher precision to help realize higher productivity and product quality. High-performance positioning techniques for inspection and production equipment are classified as one of the most challenging technologies. Vibration control is crucial to realize high-precision positioning technologies. In a precision system, various vibrations exist, which act as disturbances and can degrade the system performance. Minimizing the vibrations generated by the system can, thus, help improve the accuracy of system positioning. This paper proposes a hybrid active mount module for a precision stage. The developed module improves stage performance by reducing the base vibration arising from the floor, minimizing the vibration caused by the driving linear motors of the precision stage, and reducing the settling time by compensating the offset displacement due to the nonlinearity of the passive mount during stage driving. The prototype design is presented herein, and the experimental results demonstrate the potential of the developed device. The developed system is expected to effectively improve the stage performance by controlling the various causes of vibration.
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Affiliation(s)
- H H Lee
- School of Mechatronics Engineering, Korea Polytechnic University, Siheung-si 15073, South Korea
| | - K H Kim
- School of Mechatronics Engineering, Korea Polytechnic University, Siheung-si 15073, South Korea
| | - H Y Kim
- Manufacturing System R&D Group, Korea Institute of Industrial Technology, Cheonan-si 31056, South Korea
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Bunpa S, Chaichana N, Teng JLL, Lee HH, Woo PCY, Sermwittayawong D, Sawangjaroen N, Sermwittayawong N. Outer membrane protein A (OmpA) is a potential virulence factor of Vibrio alginolyticus strains isolated from diseased fish. J Fish Dis 2020; 43:275-284. [PMID: 31779054 DOI: 10.1111/jfd.13120] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 05/28/2019] [Revised: 11/01/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
Vibrio alginolyticus is one of the most serious causative agents of diseases in cultured marine fish and shellfish. However, the characteristics of virulence factors in pathogenic V. alginolyticus are poorly known. To gain insight into fish diseases caused by V. alginolyticus, we carried out two-dimensional gel electrophoresis (2-DE) combined with MALDI-TOF mass spectrometry to identify uniquely expressed proteins in the disease-causing V. alginolyticus. V. alginolyticus strains were isolated from marine environments and diseased fish obtained from southern Thailand. We identified seven unique proteins in the disease-causing V. alginolyticus strain. Among those, the outer membrane protein A (OmpA) had the strongest expression. Therefore, the function of this protein was further analysed. To investigate the role of OmpA protein, an in-frame deletion mutant of ompA was constructed using the homologous recombination method. Although the ompA mutant V. alginolyticus strain (ΔompA) grew normally, the mutant exhibited a significant defect in the swarming ability and the biofilm formation. Furthermore, Galleria mellonella larvae injected with the mutant bacteria had a significantly greater survival percentage than those injected with the wild-type strain, demonstrating that OmpA protein is required for the pathogenicity of V. alginolyticus. Together, this study suggests a potential target for vaccine development against pathogenic V. alginolyticus strain.
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Affiliation(s)
- Supansa Bunpa
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Nattarika Chaichana
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Jade L L Teng
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Hwei Huih Lee
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Patrick C Y Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Decha Sermwittayawong
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Nongyao Sawangjaroen
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
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Teng JLL, Wernery U, Lee HH, Joseph S, Fung J, Elizabeth SK, Yeong KY, Kinne J, Chan KH, Lau SKP, Woo PCY. First Isolation and Rapid Identification of Newcastle Disease Virus from Aborted Fetus of Dromedary Camel Using Next-Generation Sequencing. Viruses 2019; 11:v11090810. [PMID: 31480604 PMCID: PMC6783818 DOI: 10.3390/v11090810] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/23/2019] [Accepted: 08/30/2019] [Indexed: 02/07/2023] Open
Abstract
Newcastle disease virus (NDV) causes morbidities and mortalities in wild and domestic birds globally. For humans, exposure to infected birds can cause conjunctivitis and influenza-like symptoms. NDV infections in mammals are rarely reported. In this study, using next-generation sequencing, an NDV was identified and isolated from Vero cells inoculated with the nasal swab of an aborted dromedary fetus in Dubai, during the time when an NDV outbreak occurred in a pigeon farm located in close proximity to the dairy camel farm where the mother of the aborted dromedary fetus resided, and there were a lot of pigeons in the camel farm. Genome analysis revealed that the structurally and functionally important features of other NDVs were also present in this dromedary NDV genome. Phylogenetic analysis based on the nucleotide sequences of fusion protein (F), hemagglutinin-neuraminidase protein (HN) and complete polyprotein showed that the virus belonged to sub-genotype VIg of class II NDV and is most closely related to pigeon NDVs in Egypt in the same year. The present study is the first that demonstrated isolation of NDV in dromedaries. Further study is warranted to investigate the relationship between NDV infection and abortion.
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Affiliation(s)
- Jade Lee Lee Teng
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, China
| | - Ulrich Wernery
- Central Veterinary Research Laboratory, Dubai 00000, United Arab Emirates.
| | - Hwei Huih Lee
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
| | - Sunitha Joseph
- Central Veterinary Research Laboratory, Dubai 00000, United Arab Emirates
| | - Joshua Fung
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
| | | | - Kai Yan Yeong
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
| | - Joerg Kinne
- Central Veterinary Research Laboratory, Dubai 00000, United Arab Emirates
| | - Kwok-Hung Chan
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
| | - Susanna Kar Pui Lau
- Department of Microbiology, The University of Hong Kong, Hong Kong, China
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, China
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, China
| | - Patrick Chiu Yat Woo
- Department of Microbiology, The University of Hong Kong, Hong Kong, China.
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, China.
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, China.
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, China.
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Singam V, Rastogi S, Patel KR, Lee HH, Silverberg JI. The mental health burden in acne vulgaris and rosacea: an analysis of the US National Inpatient Sample. Clin Exp Dermatol 2019; 44:766-772. [PMID: 30706514 DOI: 10.1111/ced.13919] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Little is known about the mental health (MH) hospitalization among patients with acne and rosacea. AIMS To determine the MH disorders and cost burden associated with acne and rosacea. METHODS Data were examined from the 2002-2012 US National Inpatient Sample, comprising a sample of ~20% of all US paediatric and adult hospitalizations (n = 87 053 155 admissions). RESULTS A diagnosis of ≥ 1 MH disorder was much more common among all inpatients with vs. those without a diagnosis of acne (43.7% vs. 20.0%, respectively) and rosacea (35.1% vs. 20.0%, respectively). In multivariable logistic regression models controlling for sex, age, race/ethnicity and insurance status, acne (adjusted OR = 13.02; 95% CI 11.75-14.42) and rosacea (adjusted OR = 1.70; 95% CI 1.56-1.95) were associated with significantly higher odds of a primary admission for an MH disorder (13 and 8, respectively, of 15 MH disorders examined). Both acne and rosacea were associated with higher risk of mood, anxiety, impulse control and personality disorders, and with > $2 million of excess mean annual costs of hospitalization for MH disorders in the USA. CONCLUSION In this study, inpatients with acne or rosacea had increased odds of comorbid MH disorders. In particular, there was an increased number of hospital admissions secondary to a primary MH disorder with coexistent acne/rosacea. MH comorbidities were associated with considerable excess costs among inpatients with acne or rosacea.
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Affiliation(s)
- V Singam
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - S Rastogi
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - K R Patel
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - H H Lee
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - J I Silverberg
- Departments of Dermatology, Preventative Medicine, and Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Lee HH, Kim DH, Lee KW, Kim KE, Shin DE, An BK. Dietary Effects of Natural Polyphenol Antioxidant on Laying Performance and Egg Quality of Laying Hens Fed Diets with Oxidized Oil. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- HH Lee
- Konkuk University, Republic of Korea; Daeho Co., Ltd, Republic of Korea
| | - DH Kim
- Konkuk University, Republic of Korea
| | - KW Lee
- Konkuk University, Republic of Korea
| | - KE Kim
- Nonghyup Feed, Republic of Korea
| | - DE Shin
- Nonghyup Feed, Republic of Korea
| | - BK An
- Konkuk University, Republic of Korea
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11
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Hwang IC, Kim AJ, Ro H, Jung JY, Chang JH, Lee HH, Chung W, Park YH. Changes in Bone Mineral Density After Kidney Transplantation. Transplant Proc 2018; 50:2506-2508. [PMID: 30316387 DOI: 10.1016/j.transproceed.2018.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/22/2018] [Accepted: 04/06/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Numerous studies have shown that osteoporosis is common in kidney transplant recipients. However, the change in bone mineral density after kidney transplantation (KT) is not fully understood. METHODS Thirty-nine kidney transplant recipients with bone densitometry at pretransplant and 24 months after KT were reviewed. RESULTS The recipients' median age (44.5 ± 10.7 years) and dialysis duration before KT (4.2 ± 3.4 years) were recorded. The T-scores of the lumbar spine and femur neck at 24 months after KT were positively associated with the respective pretransplant T-score (P < .001 in the lumbar spine and P < .001 in the femur neck). However, the T-score after KT did not show significant change (P = .680 in lumbar spine, P = .093 in femur neck). Changes in the T-scores of the lumbar spine and femur neck over 24 months (delta T-score) were negatively associated with the respective pretransplant T-scores (P = .001 in lumbar spine, P = .026 in femur neck). Changes in the T-scores of the lumbar spine and femur neck over 24 months (delta T-score) were also associated with the pretransplant T-scores after the adjustment of other variables. CONCLUSION The change of bone mineral density was related with pretransplant bone mineral density. Careful follow-up of bone densitometry for KT recipients was needed.
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Affiliation(s)
- I C Hwang
- Department of Medicine, Gachon University College of Medicine, Inchon, Republic of Korea
| | - A J Kim
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea
| | - H Ro
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea.
| | - J Y Jung
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea
| | - J H Chang
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea
| | - H H Lee
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea
| | - W Chung
- Department of Internal Medicine, Gachon University Gil Medical Center, Inchon, Republic of Korea
| | - Y H Park
- Department of Surgery, Gachon University Gil Medical Center, Inchon, Republic of Korea
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12
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Tsang CC, Tang JYM, Fong JYH, Kinne J, Lee HH, Joseph M, Jose S, Schuster RK, Tang Y, Sivakumar S, Chen JHK, Teng JLL, Lau SKP, Wernery U, Woo PCY. Ignatzschineria cameli sp. nov., isolated from necrotic foot tissue of dromedaries (Camelus dromedarius) and associated maggots (Wohlfahrtia species) in Dubai. Int J Syst Evol Microbiol 2018; 68:3627-3634. [PMID: 30303475 DOI: 10.1099/ijsem.0.003046] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Five bacterial strains, UAE-HKU57T, UAE-HKU58, UAE-HKU59, UAE-HKU60 and UAE-HKU61, were isolated in Dubai, UAE, from necrotic foot tissue samples of four dromedaries (Camelus dromedarius) and associated maggots (Wohrlfartia species). They were non-sporulating, Gram-negative, non-motile bacilli. They grew well under aerobic conditions at 37 °C, but not anaerobically. The pH range for growth was pH 7.0-9.0 (optimum, pH 7.5-8.0) and the strains could tolerate NaCl concentrations (w/v) up to 2 % (optimum, 0.5 %). They were catalase- and cytochrome oxidase-positive, but caseinase-, gelatinase- and urease-negative. Their phenotypic characters were distinguishable from other closely related species. Phylogenetic analyses of the almost-complete 16S rRNA gene and partial 23S rRNA gene, gyrB, groEL and recA sequences revealed that the five isolates were most closely related to undescribed Ignatzschineria strain F8392 and Ignatzschineria indica, but in most phylogenies clustered separately from these close relatives. Average nucleotide identity analysis showed that genomes of the five isolates (2.47-2.52 Mb, G+C content 41.71-41.86 mol%) were 98.00-99.97% similar to each other, but ≤87.18 % similar to other Ignatzschineriaspecies/strains. Low DNA relatedness between the five isolates to other Ignatzschineriaspecies/strains was also supported by Genome-to-Genome Distance Calculator analysis. The chemotaxonomic traits of the five strains were highly similar. They were non-susceptible (intermediate or resistant) to tetracycline and resistant to trimethoprim/sulphamethoxazole. The name Ignatzschineria cameli sp. nov. is proposed to accommodate these five strains, with strain UAE-HKU57T (=CCOS1165T=NBRC 113042T) as the type strain.
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Affiliation(s)
- Chi-Ching Tsang
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - James Y M Tang
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Jordan Y H Fong
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Jörg Kinne
- 2Central Veterinary Research Laboratory, Dubai, UAE
| | - Hwei Huih Lee
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Marina Joseph
- 2Central Veterinary Research Laboratory, Dubai, UAE
| | - Shanty Jose
- 2Central Veterinary Research Laboratory, Dubai, UAE
| | | | - Ying Tang
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | | | - Jonathan H K Chen
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Jade L L Teng
- 1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Susanna K P Lau
- 4Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong, PR China.,6Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,5Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,3State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | | | - Patrick C Y Woo
- 3State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,5Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, PR China.,6Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong, PR China.,1Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China.,4Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong, PR China
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13
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Yoon YE, Lee HH, Na JC, Huh KH, Kim MS, Kim SI, Kim YS, Han WK. Impact of Cigarette Smoking on Living Kidney Donors. Transplant Proc 2018; 50:1029-1033. [PMID: 29731061 DOI: 10.1016/j.transproceed.2018.02.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/17/2018] [Accepted: 02/22/2018] [Indexed: 01/23/2023]
Abstract
BACKGROUND Smoking is known to result in a decline in renal allograft function and survival of recipients; however, the effect of smoking on living kidney donors remains unknown. In this study we evaluated the impact of cigarette smoking on renal function of kidney donors. METHODS Among 1056 donors who underwent nephrectomy, 612 completed the 6-month follow-up protocol and were enrolled in the study. The association of smoking status, including pack-years smoking history, and postoperative renal function was evaluated. RESULTS Among donors, 68.1% had never smoked, 8% were former smokers, and 23.9% were current smokers. Donors who never smoked were older than former and current smokers (42.3 ± 11.8, 41.9 ± 11.1, and 38.3 ± 10.9 years, respectively; P < .001). There was no difference in preoperative renal function between groups; however, postoperative estimated glomerular filtration rate (eGFR) was lower in former and current smokers than in those who never smoked (64.6 ± 13.8, 64.7 ± 12.3, and 67.8 ± 13.1 mL/min/1.73 m2, respectively; P = .023). In former and current smokers, pack-years smoking history was negatively associated with pre- and postoperative eGFR (r = -0.305 and -0.435, P < .001), and correlated with postoperative percent eGFR decline (r = 0.248, P < .001). Smoking history was associated with postoperative development of chronic kidney disease (CKD). Especially in former smokers, a smoking history of more than 12 pack-years was strongly associated with development of CKD (odds ratio = 7.5, P = .003). CONCLUSION Even if they no longer smoke, donors with a smoking history require close observation due to increased risk of CKD development after kidney donation. A detailed pack-years smoking history should be obtained, and smoking cessation strategies should be implemented in kidney donors.
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Affiliation(s)
- Y E Yoon
- Department of Urology, Hanyang University College of Medicine, Seoul, Korea
| | - H H Lee
- Department of Urology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - J C Na
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - K H Huh
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - M S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - S I Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - W K Han
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea.
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14
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Bae JM, Lee HH, Lee BI, Lee KM, Eun SH, Cho ML, Kim JS, Park JM, Cho YS, Lee IS, Kim SW, Choi H, Choi MG. Incidence of psoriasiform diseases secondary to tumour necrosis factor antagonists in patients with inflammatory bowel disease: a nationwide population-based cohort study. Aliment Pharmacol Ther 2018; 48:196-205. [PMID: 29869804 DOI: 10.1111/apt.14822] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/23/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND There are increasing reports of paradoxical psoriasiform diseases secondary to anti-tumour necrosis factor (TNF) agents. AIMS To determine the risks of paradoxical psoriasiform diseases secondary to anti-TNF agents in patients with inflammatory bowel disease (IBD). METHODS A nationwide population study was performed using the Korea National Health Insurance Claim Data. A total of 50 502 patients with IBD were identified between 2007 and 2016. We compared 5428 patients who were treated with any anti-TNF agent for more than 6 months (anti-TNF group) and 10 856 matched controls who had never taken anti-TNF agents (control group). RESULTS Incidence of psoriasis was significantly higher in the anti-TNF group (36.8 per 10 000 person-years) compared to the control group (14.5 per 10 000 person-years) (hazard ratio [HR] 2.357, 95% confidence interval [CI] 1.668-3.331). Palmoplantar pustulosis (HR 9.355, 95% CI 2.754-31.780) and psoriatic arthritis (HR 2.926, 95% CI 1.640-5.218) also showed higher risks in the anti-TNF group. In subgroup analyses, HRs for psoriasis by IBD subtype were 2.549 (95% CI 1.658-3.920) in Crohn's disease and 2.105 (95% CI 1.155-3.836) in ulcerative colitis. Interestingly, men and younger (10-39 years) patients have significantly higher risks of palmoplantar pustulosis (HR 19.682 [95% CI 3.867-100.169] and HR 14.318 [95% CI 2.915-70.315], respectively), whereas women and older (≥40 years) patients showed similar rates between the two groups. CONCLUSIONS The risks of psoriasiform diseases are increased by anti-TNF agents in patients with IBD. Among psoriasiform diseases, the risk of palmoplantar pustulosis shows the biggest increase particularly in male and younger patients.
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Affiliation(s)
- J M Bae
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H H Lee
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - B-I Lee
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - K-M Lee
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S H Eun
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - M-L Cho
- The Rheumatism Research Center, Catholic Research Institute of Medical Science, The Catholic University of Korea, Seoul, Korea
| | - J S Kim
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - J M Park
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - Y-S Cho
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - I S Lee
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
| | - S W Kim
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H Choi
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - M-G Choi
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Photomedicine Research Institute, Seoul, Korea
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15
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Na JC, Park JS, Yoon MG, Lee HH, Yoon YE, Huh KH, Kim YS, Han WK. Long-term Follow-up of Living Kidney Donors With Chronic Kidney Disease at 1 Year After Nephrectomy. Transplant Proc 2018; 50:1018-1021. [PMID: 29731059 DOI: 10.1016/j.transproceed.2018.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/12/2018] [Accepted: 02/22/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Although renal function recovery of living kidney donors has been reported in a number of studies, many patients show poor recovery, and the long-term prognosis of these patients has not been well studied. In this investigation we explored the long-term prognosis of renal function in patients with chronic kidney disease (CKD) at 1 year after nephrectomy. METHODS Patients who underwent donor nephrectomy during the period from March 2006 to April 2014, with a follow-up creatinine study at 1 year postoperatively and more than 3 years of follow-up, were included in the study. Creatinine and estimated glomerular filtration rate (eGFR, using the Modification of Diet in Renal Disease formula) before and after surgery were studied. Age, sex, history of hypertension or diabetes, body mass index, blood pressure, complete blood count, preoperative routine serum chemistry, and urine study results were reviewed. RESULTS Among 841 patients who had donor nephrectomy, 362 were included in the study. There were 111 patients (30.6%) with eGFR <60 mL/min/1.73 m2 at 1 year postsurgery, and the median follow-up period was 62.8 months (interquartile range [IQR] 42.0-86.3 months). The maximum eGFR after 3-year follow-up was studied, and 48 patients (43.2%) never recovered eGFR to >60 mL/min/1.73 m2. Age, history of hypertension, preoperative eGFR, and eGFR at 1 year were predictive factors at univariate analysis. Multivariate analysis of these factors was studied, and age (52.5 [IQR 47-55.7] vs 47 [IQR 7-53] years, odds ratio [OR] 1.1, 95% confidence interval [CI] 1.02-1.15, P = .007), history of hypertension (16.7% vs 1.6%, OR 10.0, 95% CI 1.09-92.49, P = .042), and eGFR at 1 year (53.9 [IQR 50.3-56.0] vs 57.0 [IQR 54.2-58.4] mL/min/1.73 m2, OR 0.8, 95% CI 0.72-0.92, P = .002) remained as significant risk factors. CONCLUSION Of all living donors, 15.7% had CKD after >3 years of follow-up. Close observation is warranted when donors have CKD after 1 year follow-up, as 43.2% fail to recover renal function. Patients who are older, have a history of hypertension, and have low eGFR at 1-year follow-up are especially at risk.
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Affiliation(s)
- J C Na
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
| | - J S Park
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
| | - M-G Yoon
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
| | - H H Lee
- Department of Urology, National Health Insurance Service Ilsan Hospital, Goyang-si, Korea
| | - Y E Yoon
- Department of Urology, Hanyang University College of Medicine, Seoul, Korea
| | - K H Huh
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - W K Han
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea.
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16
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Na JC, Park JS, Yoon MG, Lee HH, Yoon YE, Huh KH, Kim YS, Han WK. Delayed Recovery of Renal Function After Donor Nephrectomy. Transplant Proc 2018; 50:1022-1024. [PMID: 29731060 DOI: 10.1016/j.transproceed.2018.01.038] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 01/22/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Many living kidney donors are still at risk of chronic kidney disease (CKD) 1 year after nephrectomy. Although some donors still experience poor renal function, many exhibit delayed recovery of renal function afterwards. We studied the factors related to delayed recovery of renal function in patients with CKD at 1 year after nephrectomy. METHODS Patients who underwent donor nephrectomy from March 2006 to April 2014 with a follow-up creatinine study at 1 month, 6 months, 1 year, and after 3 years of follow-up were included in the study. Age, sex, history of hypertension or diabetes, body mass index, blood pressure, complete blood cell count, preoperative routine serum chemistry, and urine study results were reviewed. RESULTS Among 275 donors, 83 (30.2%) who had an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2 at 1 year of follow-up were included in the study, and the eGFR was observed during a median follow-up of 62.0 months (interquartile range [IQR], 48.9-83.1 months). Those who had improvements in eGFR of >5 mL/min/1.73 m2 were included in the recovery group (n = 48 [57.8%]), and those who did not were included in the nonrecovery group (n = 35 [42.2%]). The preoperative and 1-year follow-up eGFR did not differ significantly between the 2 groups, and the maximum eGFR after 3 years was higher in the recovery group (68.68 mL/min/1.73 m2 [IQR, 61.81-75.64 mL/min/1.73 m2] vs 55.63 mL/min/1.73 m2 [IQR, 51.73-58.29 mL/min/1.73 m2]; P < .001). The recovery group was more likely to have a history of hypertension (4.2% vs 20%; P = .032), a lower body mass index (24.11 kg/m2 [IQR, 22.04-25.20 kg/m2] vs 25.25 kg/m2 [IQR, 23.23-26.44 kg/m2]; P = .01), and a lower preoperative uric acid level (4.7 mg/dL [IQR, 3.8-5.4 mg/dL] vs 5.3 mg/dL [IQR, 4.4-6.2 mg/dL]; P = .031). After multivariate logistic regression analysis, history of hypertension (odds ratio, 0.131; P = .022) and uric acid level (odds ratio, 0.641; P = .036,) remained as significant factors. CONCLUSIONS Although 30.2% of donors had CKD at 1 year after nephrectomy, 57.8% reported improved renal function. Those with a history of hypertension and high preoperative uric acid levels were less likely to have improvements in renal function and required close follow-up.
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Affiliation(s)
- J C Na
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Republic of Korea
| | - J S Park
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Republic of Korea
| | - M-G Yoon
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Republic of Korea
| | - H H Lee
- Department of Urology, National Health Insurance Service Ilsan Hospital, Goyang-si, Republic of Korea
| | - Y E Yoon
- Department of Urology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - K H Huh
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - W K Han
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Republic of Korea.
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17
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Teng JLL, Martelli P, Chan WM, Lee HH, Hui SW, Lau CCY, Tse H, Yuen KY, Lau SKP, Woo PCY. Two novel noroviruses and a novel norovirus genogroup in California sea lions. J Gen Virol 2018; 99:777-782. [PMID: 29722646 DOI: 10.1099/jgv.0.001071] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In this study, two novel noroviruses (NoVs) were discovered from faecal samples from California sea lions from an oceanarium in Hong Kong, and named California sea lion NoV 1 (Csl/NoV1) and California sea lion NoV 2 (Csl/NoV2). Whole-genome sequencing showed that the genome organization and amino acid motifs of both Csl/NoV1 and Csl/NoV2 were typical of those of other NoVs in their open reading frames (ORFs). Csl/NoV1 possessed only 52.6-52.8 % amino acid identity in VP1 to the closest matches in genogroup GII. Therefore, Csl/NoV1 should constitute a novel genogroup of NoV. Shifting of the phylogenetic position of Csl/NoV1 in the RdRp, VP1 and VP2 trees was observed, which may have been due to recombination events and/or biased mutations. Csl/NoV2 possessed 55.4-56.2 % amino acid identity in VP1 to its closest relatives in genogroup GVI, which means that it represents a new genotype in genogroup GVI. Further studies will reveal what diseases these NoVs can cause in marine mammals.
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Affiliation(s)
- Jade L L Teng
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Emerging Infectious Diseases, Hong Kong SAR
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
| | | | - Wan-Mui Chan
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
| | - Hwei Huih Lee
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
| | | | - Candy C Y Lau
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
| | - Herman Tse
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Emerging Infectious Diseases, Hong Kong SAR
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong SAR
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR
| | - Kwok-Yung Yuen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Emerging Infectious Diseases, Hong Kong SAR
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong SAR
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR
| | - Susanna K P Lau
- State Key Laboratory of Emerging Infectious Diseases, Hong Kong SAR
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong SAR
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong SAR
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
| | - Patrick C Y Woo
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Hong Kong SAR
- State Key Laboratory of Emerging Infectious Diseases, Hong Kong SAR
- Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong SAR
- Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong SAR
- Department of Microbiology, The University of Hong Kong, Hong Kong SAR
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18
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Kim AJ, Ro H, Chang JH, Jung JY, Chung WK, Park YH, Lee HH. Suspected Frequent Relapsing IgG4-related Lung Disease in Kidney Transplant Patient: A Case Report. Transplant Proc 2018; 50:2572-2574. [PMID: 30316401 DOI: 10.1016/j.transproceed.2018.02.197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 02/19/2018] [Indexed: 12/21/2022]
Abstract
Besides the initial description of IgG4-related pancreatic disease, other sites are now commonly involved. However, occurrence of IgG4-related disease is rare in organ transplanted patients. A 57-year-old man who received a kidney transplantation presented with recurrent dyspnea on exertion. A computed tomography scan of the chest revealed bilateral interlobular septal thickening and multiple tubular and branching small nodular lesions in the right upper lobe, and mass-like consolidation of the left middle lobe. Despite no elevation of serum IgG4 level, a percutaneous core needle biopsy on consolidative mass showed interstitial fibrosis and infiltration of IgG4-positive plasma cells to be more than > 20 per high power field. After treatment with glucocorticoids and rituximab, the consolidative mass of the left middle lobe disappeared.
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Affiliation(s)
- A J Kim
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - H Ro
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - J H Chang
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - J Y Jung
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - W K Chung
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea
| | - Y H Park
- Department of Surgery, College of Medicine, Gachon University, Incheon, Korea
| | - H H Lee
- Department of Internal Medicine, College of Medicine, Gachon University, Incheon, Korea.
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Yoon YE, Lee KS, Lee YJ, Lee HH, Han WK. Renoprotective Effects of Carbon Monoxide-Releasing Molecule 3 in Ischemia-Reperfusion Injury and Cisplatin-Induced Toxicity. Transplant Proc 2018; 49:1175-1182. [PMID: 28583551 DOI: 10.1016/j.transproceed.2017.03.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND We investigated the effects of a soluble carbon monoxide-releasing molecule (CORM) in cisplatin-induced cytotoxicity and ischemia-reperfusion injury (IRI) in vitro. METHODS The effects of CORM-3 (12.5-200 μM) were assessed in normal kidney epithelial cells (HK-2, LLC-PK1) and renal cancer cells (Caki-1, Caki-2) subjected to cisplatin (50-200 μM) or IRI. To induce IRI, cells were placed in an anaerobic chamber (37°C, 95% nitrogen, 5% carbon dioxide) for 48 hours. Cells were transferred to complete medium and incubated at 37°C, 5% carbon dioxide for 6 hours. Cell viability (CCK assays), tumor necrosis factor (TNF)-α messenger RNA (mRNA) levels (quantitative reverse-transcriptase polymerase chain reaction), and protein expression of cleaved-caspase 3 and oxidative stress markers (including Erk1/2, JNK, and P38; Western blot) were assessed. RESULTS Viability after IRI was approximately 40% of control. Protective effects of CORM-3 in the IRI model were dose-dependent. Cell viability was 40% recovered in 200-μM CORM-3-pretreated cells compared with control. The protective effects of CORM-3 in cells exposed to cisplatin for 24 hours were weaker than in the IRI model. TNF-α mRNA was induced by stimulated IRI or cisplatin exposure; CORM-3 pretreatment attenuated the rise in TNF-α mRNA. IRI or cisplatin-induced activated oxidative stress markers decreased in CORM-3-pretreated cells. CORM-3 reduced expression of the apoptotic marker cleaved-caspase 3. CONCLUSION Our data demonstrate the protective effects of CORM-3 in cisplatin cytotoxicity and IRI in both normal kidney cells and renal cancer cells in vitro. CORM-3 exerts these effects by ameliorating inflammatory and oxidative stress pathways.
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Affiliation(s)
- Y E Yoon
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - K S Lee
- Department of Urology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Y J Lee
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - H H Lee
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - W K Han
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea.
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Tsang AKL, Lee HH, Yiu SM, Lau SKP, Woo PCY. Failure of phylogeny inferred from multilocus sequence typing to represent bacterial phylogeny. Sci Rep 2017; 7:4536. [PMID: 28674428 PMCID: PMC5495804 DOI: 10.1038/s41598-017-04707-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 05/18/2017] [Indexed: 11/09/2022] Open
Abstract
Although multilocus sequence typing (MLST) is highly discriminatory and useful for outbreak investigations and epidemiological surveillance, it has always been controversial whether clustering and phylogeny inferred from the MLST gene loci can represent the real phylogeny of bacterial strains. In this study, we compare the phylogenetic trees constructed using three approaches, (1) concatenated blocks of homologous sequence shared between the bacterial genomes, (2) genome single-nucleotide polymorphisms (SNP) profile and (3) concatenated nucleotide sequences of gene loci in the corresponding MLST schemes, for 10 bacterial species with >30 complete genome sequences available. Major differences in strain clustering at more than one position were observed between the phylogeny inferred using genome/SNP data and MLST for all 10 bacterial species. Shimodaira-Hasegawa test revealed significant difference between the topologies of the genome and MLST trees for nine of the 10 bacterial species, and significant difference between the topologies of the SNP and MLST trees were present for all 10 bacterial species. Matching Clusters and R-F Clusters metrics showed that the distances between the genome/SNP and MLST trees were larger than those between the SNP and genome trees. Phylogeny inferred from MLST failed to represent genome phylogeny with the same bacterial species.
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Affiliation(s)
- Alan K L Tsang
- Department of Microbiology, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Hwei Huih Lee
- Department of Microbiology, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Siu-Ming Yiu
- Department of Computer Science, The University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Susanna K P Lau
- Department of Microbiology, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Research Centre of Infection and Immunology, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Carol Yu Centre for Infection, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Pok Fu Lam, Hong Kong.
| | - Patrick C Y Woo
- Department of Microbiology, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Research Centre of Infection and Immunology, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Carol Yu Centre for Infection, The University of Hong Kong, Pok Fu Lam, Hong Kong. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The University of Hong Kong, Pok Fu Lam, Hong Kong.
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Lee HH, Kang SK, Yoon YE, Huh KH, Kim MS, Kim SI, Kim YS, Han WK. Impact of the Ratio of Visceral to Subcutaneous Adipose Tissue in Donor Nephrectomy Patients. Transplant Proc 2017; 49:940-943. [PMID: 28583563 DOI: 10.1016/j.transproceed.2017.03.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE It was reported that a metabolic syndrome affected the remaining renal function after living donor nephrectomy. However, the measurement of waist circumference is unclear because it cannot distinguish between visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT). We investigate the clinical correlation between body adipose tissue and renal function recovery after living donor nephrectomy. METHODS From July 2013 to February 2015, 75 living kidney donors were enrolled. The VAT and SAT were measured by preoperative computed tomography (CT) scan. Body mass index (BMI), VAT, SAT, and VAT-to-SAT ratio were analyzed according to a postoperative renal function recovery. Receiver operating characteristic (ROC) was performed to predict estimated glomerular filtration rate (eGFR) less than 60 mL/min/1.73 m2 at postoperative 6 months for BMI, VAT, SAT, and VAT-to-SAT ratio. RESULTS The lowest value of eGFR (57.52 ± 11.20 mL/min/1.73 m2) was measured at postoperative day 7. There was no statistically significant difference in eGFR between 1 month and 3 months. BMI, VAT, SAT, and VAT-to-SAT ratio showed a statistically significant correlation with each other (Pearson correlation, P < .05). Also, the recovery time of eGFR was correlated with VAT-to-SAT ratio; it was significant at postoperative 1, 3, and 6 months. VAT-to-SAT ratio (0.654, 95% confidence interval 0.525-0.783, P = .024) had higher predictive value in ROC. CONCLUSION We developed a new variable to predict the value of lower eGFR (less than 60 mL/min/1.73 m2) at a postoperative 6 months in living kidney donor. According to a CT scan, VAT-to-SAT ratio can predict renal function recovery.
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Affiliation(s)
- H H Lee
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea; Department of Urology, National Health Insurance Service Ilsan Hospital, Goyang-si, Korea
| | - S K Kang
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
| | - Y E Yoon
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea
| | - K H Huh
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - M S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - S I Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Kim
- Department of Transplantation Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - W K Han
- Department of Urology, Yonsei University College of Medicine, Urological Science Institute, Seoul, Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea.
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Yoon YE, Cho YI, Kim SY, Lee HH, Huh KH, Kim YS, Han WK. Plasma Neutrophil Gelatinase-associated Lipoprotein in Living Kidney Donors. Transplant Proc 2017; 48:738-41. [PMID: 27234725 DOI: 10.1016/j.transproceed.2015.12.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/30/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker for acute kidney injury. This study was conducted to determine the clinical implications of perioperative plasma NGAL levels for renal function after living donor nephrectomy. METHODS Between July 2013 and May 2014, 112 donors underwent live donor nephrectomy at our institution. Donor plasma NGAL levels were measured perioperatively for 6 months. The relationship between perioperative plasma NGAL and recovery of renal function was analyzed. Renal function was estimated with the Modification of Diet in Renal Disease formula. RESULTS Mean preoperative NGAL was 62.1 ± 29.5 ng/mL. Plasma NGAL was most elevated 1 week postoperatively (218 ± 95.5 ng/mL), and stabilized after 1 month (122.9 ± 45.3 ng/mL). Preoperative plasma NGAL was not correlated with donor age or preoperative estimated glomerular filtration rates (eGFR), but was negatively correlated with 6-month eGFR (r = -0.458, P < .001). During the observation period, plasma NGAL at 1 week was most correlated with 6-month eGFR (r = -0.554, P < .001). An ROC curve analysis showed that age, preoperative eGFR, and 1-week postoperative plasma NGAL were highly predictive of developing of chronic kidney disease (CKD), defined as eGFR <60 mL/min/1.73 m(2), 6 months postoperatively (AUC = 0.91, P < .001). One-week postoperative plasma NGAL was also independently associated with CKD risk at 6 months (odds ratio: 1.13 for each 10 ng/mL increase, P = .013). CONCLUSION Plasma NGAL becomes elevated after kidney donation and can provide information about acute kidney injury during the compensatory hyperfiltration period. Donors with increased perioperative plasma NGAL require close observation because their possibility of developing CKD after donation may be greater.
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Affiliation(s)
- Y E Yoon
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Y I Cho
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea
| | - S Y Kim
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - H H Lee
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - K H Huh
- Department of Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Kim
- Department of Surgery, Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - W K Han
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea.
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Kim MJ, Kim TH, Park Y, Lee HH, Kim JM, Lim H, Hwang SY. A study of the dietary intakes by the pre-pregnancy body mass index in pregnant women. CLIN EXP OBSTET GYN 2017; 44:27-29. [PMID: 29714861] [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
The authors analyzed the difference in weight gain and nutrition, according to the BMI before pregnancy. They divided 91 subjects into BMI group I (normal weight) and BMI group 2 (overweight) before pregnancy. In general, the BMI before pregnancy did not influence weight gain but, in the BMI group 2, the intakes of all of cholesterol, total fatty acids, vitamin B 12, iron, and copper were significantly higher. Neither group exhibited sufficient intake of vitamin B 1, vitamin B2, niacin, vitamin B6, folic acid, calcium, magnesium, iron, or zinc. Pre-pregnancy weight management and nutrition during pregnancy is very important.
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Kim TH, Lee HH, Kim JM. Efficacy of computed tomography for the diagnosis of postpartum hemorrhage. CLIN EXP OBSTET GYN 2017; 44:244-246. [PMID: 29746031] [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
The authors evaluated the diagnosis of the cause of post-partum haemorrhage (PPH) by computed tomography (CT). They retrospectively transferred 15 patients with PPH from local clinics between January 2010 and December 2011. CT revealed diverse causes. Only two cases had no additional finding on CT. They found deep tearing extending to the lower uterine segment and uterine artery in two cases, whereas five cases were an arteriovenous malformation, and one case was a uterine pseudoaneurysm.
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Lee HH, Thomas LR, Piner KR, Maunder MN. Effects of age-based movement on the estimation of growth assuming random-at-age or random-at-length data. J Fish Biol 2017; 90:222-235. [PMID: 27774591 DOI: 10.1111/jfb.13177] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 09/07/2016] [Indexed: 06/06/2023]
Abstract
Simulation methods were used to generate paired data from a simulated population that included the age-based process of movement and the length-based process of gear selection. The age-based process caused bias in the estimates of growth parameters assuming random at length, even when relatively few age classes were affected. Methods that assumed random at age were biased by the subsequent inclusion of the length-based process of gear selection. Additional knowledge of the age structure of the sampled area is needed to ensure an unbiased estimate of the growth parameters when using the length-conditional approach in the presence of age-based movement. Estimates of the variability in the length-at-age relationship were better estimated with the length-conditional than the traditional method even when the assumptions of random at length were violated. Inclusion of paired observations of length and associated age inside the population dynamics model may be the most appropriate way of estimating growth.
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Affiliation(s)
- H H Lee
- NOAA Fisheries, Southwest Fisheries Science Center, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A
| | - L R Thomas
- University of California Santa Barbara, Bren School of Environmental Science & Management, 2400 Bren Hall, University of California, Santa Barbara, CA, 93106, U.S.A
| | - K R Piner
- NOAA Fisheries, Southwest Fisheries Science Center, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A
| | - M N Maunder
- Inter-American Tropical, Tuna Commission, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A
- Center for the Advancement of Population Assessment Methodology, Scripps Institute of Oceanography, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A
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Kang CS, Lee HH, Oh S, Lee SG, Wi HM, Kim YS, Kim HS. Study on the heat flux reconstruction with the infrared thermography for the divertor target plates in the KSTAR tokamak. Rev Sci Instrum 2016; 87:083508. [PMID: 27587124 DOI: 10.1063/1.4961030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An infrared (IR) thermography is the preferred diagnostic that can quantify heat flux by measuring the surface temperature distributions of the divertor plates. The IR thermography is successfully instrumented on Korea Superconducting Tokamak Advanced Research (KSTAR). In this study, finite volume method is considered to solve the heat conduction equations. 1D-, 2D-, and 3D models are developed and compared with various calculation algorithms, such as Duhamel's theorem and THEODOR. These comparisons show good agreement. In order to acquire more efficient and reliable calculation results, we consider two numerical analysis schemes, influence of temperature on thermal properties and image stabilization. Recently, this reconstruction code is successfully applied to the KSTAR IR thermography.
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Affiliation(s)
- C S Kang
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - H H Lee
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - S Oh
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - S G Lee
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - H M Wi
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - Y S Kim
- National Fusion Research Institute, Daejeon 305-806, South Korea
| | - H S Kim
- National Fusion Research Institute, Daejeon 305-806, South Korea
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Abstract
Racial disparities in how pain is treated in the emergency department (ED) for toothache have not been reported. Due to increasing reliance on EDs for dental care, the authors investigated whether race/ethnicity and insurance type are associated with treatment for toothache pain. The authors conducted a nationally representative cross-sectional study of ED toothache visits by adults (19 to 64 y old), using the 2008-2010 National Hospital Ambulatory Medical Care Survey. Multinomial regression models accounted for the complex survey design. Outcomes were pain medicines received: none, nonopioid only, or opioids. After adjusting for sociodemographic factors, black patients had 1.99 greater odds (P < 0.005) than white patients of receiving only a nonopioid pain medicine for toothache. Visits made by patients on Medicare, Medicaid, uninsured, or "other" insurance status had greater odds than the privately insured of receiving only a nonopioid pain medicine rather than an opioid (odds ratios, respectively: 4.8, P < 0.001; 2.1, P ≤ 0.001; 2.3, P < 0.01; and 4.1, P < 0.001). Blacks are less likely than whites to receive opioids in the ED for a toothache, even with similar levels of pain. Nonprivately insured patients have lower odds than the privately insured to receive opioids for toothache pain. A better understanding of the etiology of these disparities could lead to directed interventions. Knowledge Transfer Statement: This study presents findings novel to the body of pain and oral health care literature. Because there is an increasing reliance on the emergency department to address dental pain, disparities in how toothache pain is treated will be of great interest to a growing number of Americans, clinicians, and policy makers.
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Affiliation(s)
- H H Lee
- Department of Anesthesiology, University of Illinois at Chicago, Chicago, IL, USA
| | - C W Lewis
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - C M McKinney
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
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Krauer F, Oakley-Mudge S, Brook MG, White JA, Low N, Lee HH. P08.22 How high is high risk? sexual behaviour and chlamydia infections in women attending genitourinary medicine clinics. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.368] [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: 11/03/2022]
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Lee HH, Loh SP, Bong CFJ, Sarbini SR, Yiu PH. Impact of phytic acid on nutrient bioaccessibility and antioxidant properties of dehusked rice. J Food Sci Technol 2015; 52:7806-16. [PMID: 26604353 DOI: 10.1007/s13197-015-1918-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/25/2015] [Accepted: 06/09/2015] [Indexed: 11/26/2022]
Abstract
Whole grains consumption promotes health benefits, but demonstrates controversial impacts from phytic acid in meeting requirements of good health. Therefore, this study was aimed to determine the nutrient bioaccessibility and antioxidant properties of rice cultivars named "Adan" or "Bario" and deduce the nutritional impact of phytic acid. Majority of the dehusked rice in the collection showed an acceptable level of in-vitro starch digestibility and in-vitro protein digestibility, but were poor in antioxidant properties and bioaccessibility of minerals (Ca, Fe and Zn). The drawbacks identified in the rice cultivars were due to relatively high phytic acid content (2420.6 ± 94.6 mg/100 g) and low phenolic content (152.39 ± 18.84 μg GAE/g). The relationship between phytic acid content and mineral bioaccessibility was strongest in calcium (r = 0.60), followed by iron (r = 0.40) and zinc (r = 0.27). Phytic acid content did not significantly correlate with in-vitro starch digestibility and in-vitro protein digestibility but showed a weak relationship with antioxidant properties. These suggest that phytic acid could significantly impair the mineral bioaccessibility of dehusked rice, and also act as an important antioxidant in non-pigmented rice. Bario rice cultivars offered dehusked rice with wide range of in-vitro digestibility of starch and protein, and also pigmented rice as a good source of antioxidants. However, there is a need to reduce phytic acid content in dehusked rice for improved mineral bioaccessibility among Bario rice cultivars.
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Affiliation(s)
- H H Lee
- Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia Bintulu Sarawak Campus, P.O. Box 396, Nyabau Road, 97008 Bintulu, Sarawak Malaysia
| | - S P Loh
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia ; Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - C F J Bong
- Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia Bintulu Sarawak Campus, P.O. Box 396, Nyabau Road, 97008 Bintulu, Sarawak Malaysia
| | - S R Sarbini
- Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia Bintulu Sarawak Campus, P.O. Box 396, Nyabau Road, 97008 Bintulu, Sarawak Malaysia
| | - P H Yiu
- Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia Bintulu Sarawak Campus, P.O. Box 396, Nyabau Road, 97008 Bintulu, Sarawak Malaysia ; Centre of Excellence in Borneo Ecosystem Science Research, Universiti Putra Malaysia Bintulu Sarawak Campus, P.O. Box 396, Nyabau Road, 97008 Bintulu, Sarawak Malaysia
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Park J, Kim TH, Lee HH. Efficacy of fetal thigh volumetry in predicting birth weight using the virtual organ computer-aided analysis (VOCAL) technique. CLIN EXP OBSTET GYN 2015; 42:757-762. [PMID: 26753480] [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: 06/05/2023]
Abstract
OBJECTIVES The present study was conducted to compare the accuracy of formulas used to calculate fetal thigh volume (FTV) using the virtual organ computer-aided analysis (VOCAL) technique with two-dimensional (2D) in formulas predicting birth weight. MATERIALS AND METHODS This was a prospective, cross-sectional study of 84 pregnant women with 72 hours of delivery evaluated at a university hospital between May, 2008 and April, 2010. After 2D ultrasounds (US) measurement, 3DUS was also used to determine FTV with estimates computed using the VOCAL program. RESULTS The correlation between fetal weight predicted by the 3D equation of FTV and the actual birth weight was significant. While FTV and the Hadlock II equation exhibited a low sensitivity for detection of low-birth-weight infants, FTV was a more sensitive method of detecting high-birth-weight infants than the Hadlock II equation. CONCLUSIONS It is clear that using 3DUS-VOCAL to measure FTV provides more accurate estimation of fetal birth weight.
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Ko WH, Lee HH, Jeon YM, Ida K, Lee JH, Yoon SW, Lee KD, Bae YS, Oh YK, Kwak JG. Rotation characteristics during the resonant magnetic perturbation induced edge localized mode suppression on the KSTAR. Rev Sci Instrum 2014; 85:11E413. [PMID: 25430320 DOI: 10.1063/1.4890402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Measuring rotation profiles with a reliable spatial resolution is one of the critical diagnostics in understanding the plasma behavior especially for the edge transport. In the KSTAR experiments, it has been consistently observed from the charge exchange spectroscopy measurements that the magnetic perturbations not only suppresses edge localized modes (ELMs) but also reduces toroidal rotations. In this paper, toroidal velocities of the carbon impurity and their profile evolutions during ELMy and ELM-suppressed phases are presented. The rotation profiles are shown to collapse immediately after an ELM burst and continue to build up until the next burst that accompanies another collapse. Toroidal rotations following the resonant magnetic perturbations applications are observed to be reduced along with the ELMs suppressed.
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Affiliation(s)
- Won-Ha Ko
- National Fusion Research Institute, Daejeon, South Korea
| | - H H Lee
- National Fusion Research Institute, Daejeon, South Korea
| | - Y M Jeon
- National Fusion Research Institute, Daejeon, South Korea
| | - K Ida
- National Institute for Fusion Science, Nagoya, Japan
| | - J H Lee
- National Fusion Research Institute, Daejeon, South Korea
| | - S W Yoon
- National Fusion Research Institute, Daejeon, South Korea
| | - K D Lee
- National Fusion Research Institute, Daejeon, South Korea
| | - Y S Bae
- National Fusion Research Institute, Daejeon, South Korea
| | - Y K Oh
- National Fusion Research Institute, Daejeon, South Korea
| | - J G Kwak
- National Fusion Research Institute, Daejeon, South Korea
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Abstract
The divertor Infrared television (IR TV) system for monitoring the temperature of a divertor and localized hot spots will be installed on the upper port of the N-port in the Korea Superconducting Tokamak Advanced Research (KSTAR). The cassette of KSTAR makes a periscope inevitable for the divertor IR TV. In this article, 4 design concepts for the periscope were examined, and the design based on Keplerian was shown to have better stabilities in alignment and the vibration. The final optics design based on an f-theta lens, Keplerian, and telecentric lens was derived.
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Affiliation(s)
- S Oh
- National Fusion Research Institute, 113 Gwahangno, Daejeon 305-333, South Korea
| | - K Lee
- CVI Optics Co., Ltd, Samjeong-dong, Bucheon-si 421-809, South Korea
| | - H H Lee
- National Fusion Research Institute, 113 Gwahangno, Daejeon 305-333, South Korea
| | - H M Wi
- National Fusion Research Institute, 113 Gwahangno, Daejeon 305-333, South Korea
| | - Y S Kim
- National Fusion Research Institute, 113 Gwahangno, Daejeon 305-333, South Korea
| | - C S Kang
- Department of Plasma Physics and Nuclear Fusion, Korea University of Science and Technology, Daejeon 305-350, South Korea
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Seon CR, Hong JH, Jang J, Lee SH, Choe W, Lee HH, Cheon MS, Pak S, Lee HG, Biel W, Barnsley R. Test of prototype ITER vacuum ultraviolet spectrometer and its application to impurity study in KSTAR plasmas. Rev Sci Instrum 2014; 85:11E403. [PMID: 25430310 DOI: 10.1063/1.4886430] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To optimize the design of ITER vacuum ultraviolet (VUV) spectrometer, a prototype VUV spectrometer was developed. The sensitivity calibration curve of the spectrometer was calculated from the mirror reflectivity, the grating efficiency, and the detector efficiency. The calibration curve was consistent with the calibration points derived in the experiment using the calibrated hollow cathode lamp. For the application of the prototype ITER VUV spectrometer, the prototype spectrometer was installed at KSTAR, and various impurity emission lines could be measured. By analyzing about 100 shots, strong positive correlation between the O VI and the C IV emission intensities could be found.
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Affiliation(s)
- C R Seon
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon, South Korea
| | - J H Hong
- Korea Advanced Institute of Science and Technology, Gwahangno 335, Yuseong-gu, Daejeon, South Korea
| | - J Jang
- Korea Advanced Institute of Science and Technology, Gwahangno 335, Yuseong-gu, Daejeon, South Korea
| | - S H Lee
- Korea Advanced Institute of Science and Technology, Gwahangno 335, Yuseong-gu, Daejeon, South Korea
| | - W Choe
- Korea Advanced Institute of Science and Technology, Gwahangno 335, Yuseong-gu, Daejeon, South Korea
| | - H H Lee
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon, South Korea
| | - M S Cheon
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon, South Korea
| | - S Pak
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon, South Korea
| | - H G Lee
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon, South Korea
| | - W Biel
- Institut für Plasmaphysik, Forschungszentrum Jülich Gmbh, EURATOM Association, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - R Barnsley
- ITER Organization, Cadarache Centre, 13108 Saint-Paul-Lez-Durance, France
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Lee KW, Choi YI, Moon EJ, Oh ST, Lee HH, Kang CW, An BK. Evaluation of dietary multiple enzyme preparation (natuzyme) in laying hens. Asian-Australas J Anim Sci 2014; 27:1749-54. [PMID: 25358369 PMCID: PMC4213687 DOI: 10.5713/ajas.2014.14294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 05/28/2014] [Accepted: 06/26/2014] [Indexed: 11/27/2022]
Abstract
The current experiment was designed to evaluate the efficacy of adding the multi-enzyme mixture (Natuzyme) into layers' diets with different levels of energy and available phosphorus in relation to laying performance, egg qualities, blood cholesterol level, microflora and intestinal viscosity. Two hundred and fifty 43-wk-old Hy-Line commercial layers were divided into five groups with five replicates per group (10 birds per replicate) and fed one of five experimental diets. A corn and soybean meal-based control diet was formulated and used as a control diet. Two experimental control diets were formulated to reduce energy and crude protein contents (rE) or energy, crude protein and phosphorus contents (rEP). In addition, Natuzyme was added into either rE (rE-Natu500) or rEP (rEP-Natu500) diet to reach a concentration of 500 mg per kg of diet. The experiment lasted 8 weeks. There were no significant differences in feed intake, egg production, egg weight, egg qualities such as eggshell color or Haugh unit, total cholesterol, relative organ weights and cecal microflora profiles between any dietary treatments. Natu500 supplementation into the rE diet, but not rEP diet significantly increased egg mass and eggshell qualities such as strength and thickness, but it decreased cecal ammonia concentration and intestinal viscosity in laying hens. In conclusion, the present study shows that adding multiple enzyme preparation could improve performance of laying hens fed energy and protein restricted diets.
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Pang SL, Ong SS, Lee HH, Zamri Z, Kandasamy KI, Choong CY, Wickneswari R. Isolation and characterization of CCoAOMT in interspecific hybrid of Acacia auriculiformis x Acacia mangium--a key gene in lignin biosynthesis. Genet Mol Res 2014; 13:7217-38. [PMID: 25222227 DOI: 10.4238/2014.september.5.7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
This study was directed at the understanding of the function of CCoAOMT isolated from Acacia auriculiformis x Acacia mangium. Full length cDNA of the Acacia hybrid CCoAOMT (AhCCoAOMT) was 1024-bp long, containing 750-bp coding regions, with one major open reading frame of 249 amino acids. On the other hand, full length genomic sequence of the CCoAOMT (AhgflCCoAOMT) was 2548 bp long, containing three introns and four exons with a 5' untranslated region (5'UTR) of 391 bp in length. The 5'UTR of the characterized CCoAOMT gene contains various regulatory elements. Southern analysis revealed that the Acacia hybrid has more than three copies of the CCoAOMT gene. Real-time PCR showed that this gene was expressed in root, inner bark, leaf, flower and seed pod of the Acacia hybrid. Downregulation of the homologous CCoAOMT gene in tobacco by antisense (AS) and intron-containing hairpin (IHP) constructs containing partial AhCCoAOMT led to reduction in lignin content. Expression of the CCoAOMT in AS line (pART-HAS78-03) and IHP line (pART-HIHP78-06) was reduced respectively by 37 and 75% compared to the control, resulting in a decrease in the estimated lignin content by 24 and 56%, respectively. AhCCoAOMT was found to have altered not only S and G units but also total lignin content, which is of economic value to the pulp industry. Subsequent polymorphism analysis of this gene across eight different genetic backgrounds each of A. mangium and A. auriculiformis revealed 47 single nucleotide polymorphisms (SNPs) in A. auriculiformis CCoAOMT and 30 SNPs in A. mangium CCoAOMT.
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Affiliation(s)
- S L Pang
- Tree Breeding Unit, Applied Forest Science and Industry Development, Sarawak Forestry Corporation, Kuching, Sarawak, Malaysia
| | - S S Ong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - H H Lee
- Department of Biological Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | - Z Zamri
- School of Bioscience and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - K I Kandasamy
- Malaysia Biotechnology Corporation, Kuala Lumpur, Malaysia
| | - C Y Choong
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - R Wickneswari
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
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Kim JH, Park CH, Perez RA, Lee HY, Jang JH, Lee HH, Wall IB, Shi S, Kim HW. Advanced biomatrix designs for regenerative therapy of periodontal tissues. J Dent Res 2014; 93:1203-11. [PMID: 25139364 DOI: 10.1177/0022034514540682] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Periodontitis is an inflammatory disease that causes loss of the tooth-supporting apparatus, including periodontal ligament, cementum, and alveolar bone. A broad range of treatment options is currently available to restore the structure and function of the periodontal tissues. A regenerative approach, among others, is now considered the most promising paradigm for this purpose, harnessing the unique properties of stem cells. How to make full use of the body's innate regenerative capacity is thus a key issue. While stem cells and bioactive factors are essential components in the regenerative processes, matrices play pivotal roles in recapitulating stem cell functions and potentiating therapeutic actions of bioactive molecules. Moreover, the positions of appropriate bioactive matrices relative to the injury site may stimulate the innate regenerative stem cell populations, removing the need to deliver cells that have been manipulated outside of the body. In this topical review, we update views on advanced designs of biomatrices-including mimicking of the native extracellular matrix, providing mechanical stimulation, activating cell-driven matrices, and delivering bioactive factors in a controllable manner-which are ultimately useful for the regenerative therapy of periodontal tissues.
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Affiliation(s)
- J H Kim
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea
| | - C H Park
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea
| | - R A Perez
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea
| | - H Y Lee
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea
| | - J H Jang
- Department of Biochemistry, Inha University School of Medicine, Incheon 400-712, Republic of Korea
| | - H H Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 330-714, Republic of Korea
| | - I B Wall
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
| | - S Shi
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, Los Angeles, CA, USA
| | - H W Kim
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 330-714, Republic of Korea
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Lee SL, Lee HH, Ko YH, Song KY, Park CH, Jeon HM, Kim SS. Relevance of hepatoduodenal ligament lymph nodes in resectional surgery for gastric cancer. Br J Surg 2014; 101:518-22. [PMID: 24615472 DOI: 10.1002/bjs.9438] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Hepatoduodenal lymph node (HDLN) positivity is considered distant metastasis in gastric cancer according to the seventh American Joint Committee on Cancer (AJCC) classification. In contrast, the International Union Against Cancer seventh edition and the Japanese Gastric Cancer Association both consider HDLN as a regional lymph node that can be included in the context of a curative resection. The purpose of this study was to determine whether there was justification for considering HDLN involvement as a distant metastasis for which resectional surgery could not have survival benefit. METHODS This study enrolled consecutive patients with gastric cancer having D2 or greater resections, with removal and pathological assessment of the HDLN, between 1989 and 2009. The pathological stage of all patients was determined based on the seventh AJCC criteria, with HDLN included as a regional lymph node. RESULTS A total of 1872 patients had their HDLN removed, of whom 68 had a metastatic lymph node in the hepatoduodenal ligament. The 5-year survival rate of these 68 patients was 30 per cent, compared with 47·7 per cent for those with stage III (P < 0·001) and 9·8 per cent for those with stage IV (P = 0·007) HDLN-negative tumours. The 5-year survival rate of 41 patients with HDLN metastasis and no evidence of distant metastasis at any other site was significantly higher than that among 120 patients with stage IV disease without HDLN metastasis (P < 0·001), whereas 5-year survival did not differ between the 41 patients with stage I-III disease with HDLN metastasis and 568 patients with stage III tumours without HDLN metastasis (P = 0·184). HDLN metastasis was not a significant factor for survival in multivariable analysis. CONCLUSION It is inappropriate to include the HDLN in the distant metastatic lymph node group in gastric cancer. The seventh AJCC criteria for node grouping should be revised.
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Affiliation(s)
- S L Lee
- Department of Radiology, College of Medicine, Catholic University of Korea, Seoul, Korea
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Abstract
When lidocaine is locally delivered into the inner ear, it rapidly paralyzes the peripheral vestibular afferent neurons and induces unilateral vestibular loss. The goals of this study were to explore the possibility of developing intratympanic injection (IT) of lidocaine as a modality for treating acute vertigo. To evaluate the minimum concentration required, latent time, action duration, and possibility of lidocaine IT readministration to the vestibular system, we compared the development of horizontal nystagmus after IT of 2, 4, 6, 8, and 10% lidocaine solutions in rats. To identify the induction of vestibular compensation, c-Fos-like protein expression was observed in the vestibular nucleus. Results of our investigation showed that lidocaine IT concentrations greater than 4% induced vestibular hyporeflexia in the injected ear. In order to induce hyporeflexia 4 and 6% lidocaine solutions could also be repeatedly injected. Regardless of concentration, effects of the lidocaine IT dissipated gradually over time. Our findings could be used to develop novel methods for symptom control in vestibular disorder patients.
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Affiliation(s)
- HH Lee
- Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, Busan, South Korea
| | - MJ Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, South Korea
| | - YK Jo
- Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, Busan, South Korea
| | - JY Kim
- Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, Busan, South Korea
| | - GC Han
- Department of Otolaryngology-Head and Neck Surgery, Gachon University of Medicine and Science, Graduate School of Medicine, Incheon, South Korea
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Kim TH, Lee HH, Kim JM, Yang YJ, Kim SY, Hong YP. The routine value of anogenital distance as an anthropometric measurement in newborns. CLIN EXP OBSTET GYN 2014; 41:283-287. [PMID: 24992777] [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: 06/03/2023]
Abstract
OBJECTIVE Anogenital distance (AGD) is a sexually dimorphic trait; AGD is an external marker of sexual differentiation at birth in animals. STUDY DESIGN The present study used a prospective, cross-sectional design. Data were collected from newborn infants that were delivered at hospital in Bucheon between March and September 2009. The mothers of the infants provided sociodemographic information and obstetric history. The relationships between AGD and other anthropometric measures (i.e., weight, height, and head circumference) were analyzed. Moreover adjusted AGD values were compared with obstetric characteristics, including number of deliveries, abortion history, preterm history, and duration of gestation. RESULTS Significant correlations were noted for all anthropometric measures in male and female newborns (p < 0.0001). The adjusted AGD values in males and females were also significantly associated with the duration of gestation (p = 0.0008 and p = 0.0148, respectively). Moreover, the adjusted AGD in female newborns, but not in males, was significantly associated with maternal abortion history (p = 0.0242). CONCLUSION The AGD is a valuable anthropometric marker in term infants.
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Kim TH, Jo S, Park Y, Lee HH, Chung SH, Lee WS. Differences in omega-3 and fatty acid profiles between patients with endometriosis and those with a functional ovarian cyst. J OBSTET GYNAECOL 2013; 33:597-600. [PMID: 23919858 DOI: 10.3109/01443615.2013.786029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Endometriosis is a chronic inflammatory gynaecological disease. Problems associated with endometriosis include dysmenorrhoea, dyspareunia and infertility. We evaluated the omega-3 and fatty acid profiles in erythrocytes and tissues in patients with endometriosis (n = 10) or a functional ovarian cyst (n = 12), using a food frequency questionnaire that included questions about 117 food items typical of Korean meals. Erythrocyte levels of 20:5n3 and 22:6n3, the omega-3 index, and n-3 PUFA were significantly higher, and the n-6:n-3 ratio was significantly lower in the endometriosis group than in the functional ovarian cyst group. The functional ovarian cyst group consumed significantly more fruit than the group with endometriosis.
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Affiliation(s)
- T H Kim
- Department of Obstetrics and Gynecology, College of Medicine, Soonchunhyang University, Bucheon
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Affiliation(s)
- H R Kim
- Departments of Radiology, Soonchunhyang University, Bucheon Hospital, Bucheon-si, Gyeonggi-do, South Korea
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Lee HH, Lee HJ, Cho JI, Stampfer MJ, Willett WC, Kim CI, Cho E. Overall and abdominal adiposity and hypertriglyceridemia among Korean adults: the Korea National Health and Nutrition Examination Survey 2007–2008. Eur J Clin Nutr 2012; 67:83-90. [DOI: 10.1038/ejcn.2012.181] [Citation(s) in RCA: 8] [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: 11/09/2022]
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Seol J, Lee SG, Park BH, Lee HH, Terzolo L, Shaing KC, You KI, Yun GS, Kim CC, Lee KD, Ko WH, Kwak JG, Kim WC, Oh YK, Kim JY, Kim SS, Ida K. Effects of electron-cyclotron-resonance-heating-induced internal kink mode on the toroidal rotation in the KSTAR Tokamak. Phys Rev Lett 2012; 109:195003. [PMID: 23215391 DOI: 10.1103/physrevlett.109.195003] [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] [Received: 05/15/2012] [Indexed: 06/01/2023]
Abstract
It is observed that the magnitude of the toroidal rotation speed is reduced by the central electron cyclotron resonance heating (ECRH) regardless of the direction of the toroidal rotation. The magnetohydrodynamics activities generally appear with the rotation change due to ECRH. It is shown that the internal kink mode is induced by the central ECRH and breaks the toroidal symmetry. When the magnetohydrodynamics activities are present, the toroidal plasma viscosity is not negligible. The observed effects of ECRH on the toroidal plasma rotation are explained by the neoclassical toroidal viscosity in this Letter. It is found that the neoclassical toroidal viscosity torque caused by the internal kink mode damps the toroidal rotation.
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Affiliation(s)
- J Seol
- National Fusion Research Institute, Gwahangno 113, Yuseong-gu, Daejeon 305-333, Korea
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Park JO, Chang KH, Lee HH, Chung IS. Biochemical analysis of Hyphantria cunea NPV attachment to Spodoptera frugiperda 21 cells. Cytotechnology 2012; 31:159-63. [PMID: 19003136 DOI: 10.1023/a:1008007818967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Binding characteristics of Hyphantria cunea nuclear polyhedrosis virus (HcNPV) to Spodoptera frugiperda 21 (Sf21) cells was determined. The cells displayed an affinity of 0.9 x 10(10) M(-1) with about 8900 binding sites per cell. The biochemical nature of HcNPV-binding sites on the cell surface was also partially elucidated. There were 45 to 49% reductions in HcNPV binding following the pretreatment of cells with three proteases, suggesting the involvement of a cellular protein component in virus binding. Tunicamycin, which inhibits N-linked glycosylation and the expression of some membrane proteins on the cell surface, reduced virus binding suggesting a role for glycoprotein(s) in binding. Treatment of cells with wheat germ agglutinin or neuraminidase did not measurably reduce virus binding, indicating that oligosaccharides containing N-acetylglucosamine or sialic acid are not directly involved in HcNPV attachment. The negative effect of methylamine on HcNPV binding seems to be due to the fact that HcNPV entry via an endocytic pathway is blocked by the increased pH of the endosome. Data on energy inhibitors (sodium azide and dinitrophenol) indicates that HcNPV attachment to Sf21 cells may be closely linked to viral entry via receptor-mediated endocytosis. These findings suggest that the binding site moiety has a glycoprotein component, but that direct involvement of oligosacccharides containing N-acetylglucosamine or sialic acid residues in binding is unlikely, and that HcNPV attachment to Sf21 cells might be via receptor-mediated endocytosis.
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Choi HN, Kim YS, Chang JH, Jung JY, Chung WK, Park YH, Lee HH. Metastatic sarcomatoid carcinoma to liver and bone marrow in renal transplant recipient: due to exacerbation of quiescent renal cancer? A case report. Transplant Proc 2012; 44:299-302. [PMID: 22310638 DOI: 10.1016/j.transproceed.2011.12.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Sarcomatoid carcinoma is a rare tumor with rapid growth and a poor prognosis. A 60-year-old man underwent kidney transplantation. Three months after transplantation, multiple tumors were found in the liver and bone, and the patient died several days later. Pathological examination of liver and bone marrow biopsies revealed metastatic sarcomatoid carcinoma. Pretransplantation, the patient's workup was positive only for mild thrombocytopenia and a complicated cyst with peripheral rim calcification (Bosniak IIF) in the right kidney. Retrospectively, we found the abdominal computed tomography film, which had been examined at another hospital 6 years previously. The calcified complicated cyst was a 3-cm enhancing solid mass in the right kidney, suggesting renal cell cancer. It is possible that the cancer developed from the calcified complicated cyst. In this case, immunosuppressants may have altered malignant cell proliferation, invasion, and the form of metastasis.
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Affiliation(s)
- H N Choi
- Department of Internal Medicine, Gachon University of Medicine and Science, Incheon, South Korea
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Kim TH, Lee HH, Kim JM, Chung SH. Hysterectomy prevention using the uterine hollow obliterations (HYUNHO) method for placenta previa. CLIN EXP OBSTET GYN 2012; 39:462-465. [PMID: 23444744] [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] [Indexed: 06/01/2023]
Abstract
OBJECTIVE We have invented a method of hysterectomy prevention called the uterine hollow obliteration (HYUNHO) method to preserve the uterus and fertility after treating placenta previa or accreta. METHODS Eighty patients underwent cesarean section because of placenta previa between January 2003 and December 2009. All patients eligible for the study were evaluated by followup and a telephone questionnaire about fertility, menstruation recovery, and complications. RESULTS The success rate on preserving the uterus with the HYUNHO method was 96.2%. Three cases required additional procedures, including a cesarean hysterectomy or uterine artery embolization (UAE), two cases underwent a cesarean hysterectomy after delivery, and one case underwent UAE. CONCLUSION The HYUNHO method is a safe, easy method for placenta previa, although it should be evaluated in a randomized controlled trial.
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Affiliation(s)
- T H Kim
- Department of Obstetrics and Gynecology, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
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Lee WS, Park ES, Kim DH, Kim TH, Lee HH, Chung SH. Expression of p53, p27 and Jab1 protein in epithelial ovarian tumors. EUR J GYNAECOL ONCOL 2012; 33:358-362. [PMID: 23091890] [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] [Indexed: 06/01/2023]
Abstract
OBJECTIVE The study aimed to investigate expression of p53, p27 and Jun activation domain-binding protein 1 (Jab1) proteins in epithelial ovarian tumors and the values of these factors as discriminating markers for the transformation of borderline tumors to cancers. METHODS Forty-seven cases of paraffin-embedded tissues of epithelial ovarian tumors including 22 cases of benign ovarian tumors, nine cases of borderline tumors, and 16 cases of invasive cancers were used to evaluate expression of p53, p27 and Jab1 proteins by immunohistochemical methods. RESULTS p53 protein was expressed in 13.6% of the benign tumors, 44.4% of the borderline tumors and 62.5% of the malignant tumors and p27 protein was expressed in 95.5% of the benign tumors, 66.7% of the borderline tumors, and 37.5% of the malignant tumors. Expression of Jab1 protein was observed in 22.7% of the benign tumors, 77.8% of the borderline tumors and 62.5% of the malignant tumors. Expressions of p53, p27 and Jab1 proteins in malignant tumors were all higher than in benign tumors and the expression of p27 protein in malignant tumors was lower than in benign tumors (p < 0.05). Expression of Jab1 protein in borderline tumors was significantly higher than in benign tumors (p < 0.05). CONCLUSIONS Expression of p53, p27 and Jab1 proteins can be used to discriminate between benign and malignant tumors in epithelial ovarian tumors.
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Affiliation(s)
- W S Lee
- Department of Obstetrics and Gynecology, College of Medicine, Soonchunhyang University, Bucheon, Republic of Korea.
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Barsoum WK, Lee HH, Murray TG, Colbrunn R, Klika AK, Butler S, van den Bogert AJ. Robotic testing of proximal tibio-fibular joint kinematics for measuring instability following total knee arthroplasty. J Orthop Res 2011; 29:47-52. [PMID: 20665552 PMCID: PMC2970670 DOI: 10.1002/jor.21207] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pain secondary to instability in total knee arthroplasty (TKA) has been shown to be major cause of early failure. In this study, we focused on the effect of instability in TKA on the proximal tibio-fibular joint (PTFJ). We used a robotics model to compare the biomechanics of the PTFJ in the native knee, an appropriately balanced TKA, and an unbalanced TKA. The tibia (n = 5) was mounted to a six-degree-of-freedom force/torque sensor and the femur was moved by a robotic manipulator. Motion at the PTFJ was recorded with a high-resolution digital camera system. After establishing a neutral position, loading conditions were applied at varying flexion angles (0°, 30°, and 60°). These included: internal/external rotation (0 Nm, ±5 Nm), varus/valgus (0 Nm, ±10 Nm), compression (100 N, 700 N), and posterior drawer (0 N, 100 N). With respect to anterior displacement, external rotation had the largest effect (coefficient = 0.650; p < 0.0001). Polyethylene size as well as the interaction between polyethylene size and flexion consistently showed substantial anterior motion. Flexion and mid-flexion instability in TKA have been difficult to quantify. While tibio-femoral kinematics is the main aspect of TKA performance, the effects on adjacent tissues should not be overlooked. Our data show that PTFJ kinematics are affected by the balancing of the TKA.
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Affiliation(s)
- WK Barsoum
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
,Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - HH Lee
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - TG Murray
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - R Colbrunn
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
| | - AK Klika
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - S Butler
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | - AJ van den Bogert
- Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio
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Lee HH, Miller LK. Isolation, Complementation, and Initial Characterization of Temperature-Sensitive Mutants of the Baculovirus Autographa californica Nuclear Polyhedrosis Virus. J Virol 2010; 31:240-52. [PMID: 16789181 PMCID: PMC353440 DOI: 10.1128/jvi.31.1.240-252.1979] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sixteen temperature-sensitive mutants of Autographa californica nuclear polyhedrosis virus were isolated. Several interesting phenotypes were observed. A large proportion of the mutants were unable to form polyhedral occlusion bodies (polyhedra) at the nonpermissive temperature (32.5 degrees C). At 32.5 degrees C, one mutant formed plaques in which the cells lacked polyhedra. Another mutant type was defective in the production of progeny extracellular nonoccluded virus and produced a "plaque" consisting of only a single cell containing polyhedra at 32.5 degrees C. One mutant was defective in plaque formation, progeny nonoccluded virus formation, and polyhedra formation at 32.5 degrees C. Several mutants produced nonoccluded virus but failed to produce plaques or polyhedra at 32.5 degrees C. Other phenotypes were also distinguished. Complementation analyses, performed by either measuring the increase in extracellular nonoccluded virus formation or by observing polyhedra formation in mixed infections at 32.5 degrees C, indicated the presence of 15 complementation groups. A high frequency of recombination was observed. Four of the mutants were found to be host dependent in their temperature sensitivity for polyhedra formation.
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Affiliation(s)
- H H Lee
- Department of Bacteriology and Biochemistry, University of Idaho, Moscow, Idaho 83843
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Bae S, Kim JE, Hwang J, Lee YS, Lee HH, Lee J, Lyoo IK, Renshaw PF, Yoon SJ. Increased prevalence of white matter hyperintensities in patients with panic disorder. J Psychopharmacol 2010; 24:717-23. [PMID: 18957476 DOI: 10.1177/0269881108098476] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of the current study is to compare the prevalence, severity and location of cerebral white matter hyperintensities (WMH) between patients with panic disorder (PD) and healthy control subjects. Patients with PD (n = 24) and matched healthy control subjects (n = 24) were scanned using a 3.0 Tesla whole-body magnetic resonance scanner. Axial T2-weighted and fluid-attenuated inversion recovery images were acquired and evaluated for the prevalence, severity and location of WMH using the modified composite scale of Fazekas and Coffey and coded separately for deep and periventricular WMH. Logistic regression analyses were used to assess the association between WMH and the diagnosis of PD. A greater severity of total WMH was associated with a diagnosis of PD in a dose-dependent pattern (odds ratio [OR] = 8.8, P = 0.005 for mild WMH; OR = 27.7, P = 0.007 for moderate to severe WMH). Deep WMH, where most group differences originated, were predominantly located in the frontal region of the brain (n = 16 in PD, n = 1 in control). The current report is the first study to report an increased prevalence of WMH in patients with PD.
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Affiliation(s)
- S Bae
- Department of Psychiatry, Seoul National University and Hospital, Seoul, South Korea
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