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Min SY, Pang NS, Kim YR, Jeong SA, Jung BY. Factors associated with age-related changes in oral diadochokinesis and masticatory function in healthy old adults. BMC Oral Health 2024; 24:462. [PMID: 38627762 PMCID: PMC11020950 DOI: 10.1186/s12903-024-04214-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND This cross-sectional study aimed to identify factors associated with age-related changes in masticatory performance (MP) and oral diadochokinesis (ODK) and to provide normal values in healthy old adults for the diagnosis of oral frailty. METHODS A total of 385 participants were divided into three age groups (Gr1-3): 20-64 years, 65-74 years, and ≥ 75 years. To investigate tongue-lip motor function, ODK was assessed as the number of repetitions of the monosyllables /pa/ta/ka/. Four questionnaires were used to assess subjective masticatory ability, cognitive ability, and psychological status. MP, bite force, and occlusal area were tested to assess dynamic objective masticatory function, and the number of remaining teeth and functional tooth pairs were determined to assess static objective masticatory function. Handgrip strength (HG), oral dryness, and tongue pressure (TP) were assessed to identify influencing factors. Intergroup differences were evaluated by ANOVA and the Kruskal‒Wallis test, and correlations between ODK and orofacial factors were evaluated. RESULTS This study revealed significant age-related declines in TP, HG, and ODK, especially after 65 years of age. Factors affecting MP were posterior teeth, the Eichner index, bite force, occluding area, the Korean Mini-Mental State Examination (KMMSE) score, and ODK. Each ODK syllable was associated with different factors, but common factors associated with ODK were MP, HG, and PHQ-9 score. For the syllables /pa/ta/, the Eichner Index, TP, and oral dryness were also associated. For the syllable /ka/ in Gr3, MP, TP, HG, oral dryness, and the KMMSE score were associated. CONCLUSIONS These results could provide practical guidelines for oral rehabilitation in old adults and contribute to improving the understanding of age-related changes in oral function and the multidimensional nature of masticatory dynamics.
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Affiliation(s)
- Se-Yeon Min
- Department of Dentistry, Graduate School, Yonsei University, Seoul, 03722, Korea
| | - Nan-Sim Pang
- Department of Advanced General Dentistry College of Dentistry, Yonsei University, 50 Yonseiro, Seodaemun-Gu, Seoul, 03722, South Korea
| | - Yu-Ri Kim
- Department of Advanced General Dentistry College of Dentistry, Yonsei University, 50 Yonseiro, Seodaemun-Gu, Seoul, 03722, South Korea
| | - Sol-Ah Jeong
- Department of Advanced General Dentistry College of Dentistry, Yonsei University, 50 Yonseiro, Seodaemun-Gu, Seoul, 03722, South Korea
| | - Bock-Young Jung
- Department of Advanced General Dentistry College of Dentistry, Yonsei University, 50 Yonseiro, Seodaemun-Gu, Seoul, 03722, South Korea.
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Kim YR, Lee YM, Huh KH, Yi WJ, Heo MS, Lee SS, Kim JE. Clinical and radiological features of malformed mesiodens in the nasopalatine canal: an observational study. Dentomaxillofac Radiol 2024; 53:189-195. [PMID: 38268503 PMCID: PMC11003663 DOI: 10.1093/dmfr/twae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/18/2023] [Accepted: 01/17/2024] [Indexed: 01/26/2024] Open
Abstract
OBJECTIVES The purpose of this study is to investigate the morphological changes that occur when mesiodens is located within the nasopalatine canal, as well as clinical characteristics. METHODS Clinical records and CT images of patients who had mesiodens in the nasopalatine canal were retrospectively analysed. In addition to demographic information, clinical symptoms and complications associated with extraction of mesiodens were recorded. Using CT images, number, location, size, and tooth morphology were evaluated. RESULTS This study included 32 patients and 38 mesiodens within the nasopalatine canal. Supernumerary teeth exhibited a characteristic feature of thin and elongated shape in the canal (narrow width and elongation were observed in 96.6% and 53.3% of the patients, respectively). Fusion was found in 4 patients and dilaceration in 12. A complication occurred in 2 patients, which was tooth remnant, not a neurologic complication. Only 5 mesiodens could be detected in the nasopalatine canal on panoramic images. CONCLUSIONS Morphological abnormalities in mesiodens within the nasopalatine canal were frequently detected, and these could be effectively diagnosed through 3D imaging analysis.
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Affiliation(s)
- Yu-Ri Kim
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Yu-Min Lee
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Kyung-Hoe Huh
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Won-Jin Yi
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Min-Suk Heo
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Sam-Sun Lee
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
| | - Jo-Eun Kim
- Department of Oral and Maxillofacial Radiology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, 03080, Korea
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Kim YR, Sang MK. Effects of di-(2-ethylhexyl) phthalate on growth, metabolism, and virulence of the plant pathogenic bacterium Acidovorax citrulli. Front Cell Infect Microbiol 2023; 13:1228713. [PMID: 37692166 PMCID: PMC10485622 DOI: 10.3389/fcimb.2023.1228713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Acidovorax citrulli is a seed-borne bacterial pathogen that causes bacterial fruit blotch in cucurbits and severely affects the production of cucumbers and watermelons globally. In this study, we investigated the effects of di-(2-ethylhexyl) phthalate (DEHP) on the growth, metabolism, and virulence of A. citrulli. Bacterial population was not affected by DEHP exposure; moreover, significant changes were not observed in lipid peroxidation, membrane permeability, and nucleic acid leakage. However, palmitoleic acid content was increased in the cell membrane of DEHP-exposed A. citrulli. Further, DEHP exposure increased the activity of TCA cycle-related enzymes, including α-ketoglutarate dehydrogenase and succinyl-CoA synthetase, along with increase in the content of glutamate, succinate, fumarate, and malate in TCA cycle. Additionally, total 270 genes were differentially expressed by the treatment, of which 28 genes were upregulated and 242 genes, including those related to translation, flagellum-dependent cell motility, and flagellum assembly, were downregulated. Regarding virulence traits, swimming activity was decreased in DEHP-exposed A. citrulli; however, biofilm formation was not affected in in vitro assay. Moreover, relative expression of pathogenicity genes, including hrpX and hrpG, were decreased in DEHP-exposed A. citrulli compared to that of unexposed A. citrulli. Therefore, these results suggest that DEHP accumulation in soil could potentially influence the metabolism and virulence traits of A. citrulli.
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Affiliation(s)
| | - Mee Kyung Sang
- Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea
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Kim JI, Kim SK, Kim KE, Kim YR, Kim EJ, An BK. Effects of Lupin Kernel (Lupinus angustifolius) and Faba Bean (Vicia faba) on Growth Performance and Hepatic Fatty Acid Profiles in Broiler Chicks. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2022-1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- JI Kim
- Konkuk University, Republic of Korea
| | - SK Kim
- Konkuk University, Republic of Korea
| | - KE Kim
- Nonghyup Feed, Republic of Korea
| | - YR Kim
- Yonam College, Republic of Korea
| | - EJ Kim
- Yonam College, Republic of Korea
| | - BK An
- Konkuk University, Republic of Korea
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Jung ST, Pyo SH, Kang WG, Kim YR, Kim JK, Nho YC, Park JS, Choi JH, Kang CM. Effect of backscattering on irradiation of electrical wire and cables by electron beam. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.109979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kim YR, Shin DG, Kim S. Bleeding risk in patients with atrial fibrillation treated with combined anti-platelet and NOAC therapy. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The combined use of antiplatelet agents (APT) and non-vitamin K antagonist oral anticoagulants (NOACs) in patient with atrial fibrillation (AF) is commonly encountered in clinical practice. The purpose of this study was to compare the clinical outcomes between combination therapy (NOAC and APT) and monotherapy (NOAC only).
Methods and results
We analyzed patients who were prescribed NOACs between January 2012 and December 2016. The primary outcome was major or any bleeding events and the secondary outcomes were stroke/systemic embolism (SE) and major adverse cardiac events (MACE). Of 1,068 participants, there were 264 (24.7%) patients in the combination group.
The prevalence of diabetes (p=0.017) and history of stroke and transient ischemic attacks (p<0.001) was higher in the combination group than in the monotherapy group. During the mean 14.6±9.8 months of follow-up, the incidence of any bleeding was significantly higher in the combination group than in the monotherapy group (p<0.001). Major bleeding, stroke/SE, and MACE between the two groups were similar. The rate of under-dosage NOACs prescriptions was higher in the combination group than in the monotherapy group (p=0.024).
Conclusions
The combination therapy had higher incidences of any bleeding events compared to the monotherapy. However, there was no difference in stroke/SE and MACE.
The bleeding risk in patients taking the combination of NOACs and APT should be carefully evaluated.
Funding Acknowledgement
Type of funding sources: None. Figure 1. Primary and secondary outcomes
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Affiliation(s)
- Y R Kim
- Dongguk University International Hospital, Goyang, Korea (Republic of)
| | - D G Shin
- Kangnam Sacred Heart Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S Kim
- The Catholic University of Korea Incheon St. Mary's Hospital, Internal Medicine, Incheon, Korea (Republic of)
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Jung ST, Pyo SH, Kang WG, Kim YR, Kim JK, Kang CM, Nho YC, Park JS. Energy deposition calculation by Monte Carlo simulation in irradiation of electric cables by electron beam. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kim YR. The volume of left atrium measured by multi-detector computed tomography can predict of long term outcome in catheter ablation of atrial fibrillation. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeab111.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
This study aimed to identify the volume left atrium (LA) and left atrial appendage (LAA) calculated by multidetector computed tomography (MDCT) is related to the long term out come of radiofrequency catheter ablation (RFCA) for atrial fibrillation(AF).
Methods
We analyzed data from 99 consecutive patients who referred for RFCA due to drug-refractory symptomatic AF (age 56 ± 10 years; 74% men; 64% paroxysmal AF). Prior to the procedure, all patients underwent ECG-gated 128 channels MDCT scan for assessment for pulmonary vein anatomy, LA and LAA volume estimation, and electro-anatomical mapping integration.
Results
The volume of LA and LAA calculated by CT was 142.6 ± 32.2 mL and 14.7 ± 6.0 mL, respectively. LA volume was smaller in paroxysmal AF(PAF) than persistent AF(PeAF) (133.9 ± 29.3 mL vs. 158.0 ± 31.4 mL, p < 0.0001) but LAA volume was not significantly different between PAF and PeAF(13.9 ± 5.0 mL vs. 16.3 ± 7.3 mL, p = 0.09). Patients were classified into 2 groups by the LA volume of 160mL; group 1 (LA volume < 160mL,n = 73) and group 2 (LA volume ≥160mL, n = 26). After a mean follow up 12.6 ± 5.3 months, 78.8% of the patients maintained sinus rhythm after the index ablation. AF free survival was significantly greater in group 1 than group 2 (84.9% vs. 61.5% p = 0.017). No relationship was found between LAA volume and the outcome of RFCA. Multivariate analysis showed that the LA volume >160mL was an independent predictor of arrhythmia-free after ablation (Hazard ration 2.55, 95% confidential interval 1.02-6.35, p = 0.045)
Conclusion
Higher LA volume is independent risk factor for AF recurrence after RFCA but not LAA volume. The LA volume quickly assessed by MDCT could be a good predictor of long term recurrence after AF ablation.
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Affiliation(s)
- YR Kim
- Dongguk University International Hospital, Goyang, Korea (Republic of)
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Kim YR, Kim JH, Son SA, Park JK. Effect of Silane-Containing Universal Adhesives on the Bonding Strength of Lithium Disilicate. Materials (Basel) 2021; 14:ma14143976. [PMID: 34300895 PMCID: PMC8307548 DOI: 10.3390/ma14143976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 11/20/2022]
Abstract
The purpose of this study was to investigate the effect of silane-containing universal adhesives on the bonding strength of lithium disilicate. Two-hundred-and-forty lithium disilicate blocks were divided into 16 groups according to the following surface treatments: hydrofluoric acid (HF)-treated or not, silane-treated or not, and the type of universal adhesive used (All-Bond Universal (ABU); Prime & bond (PB); Clearfil Universal Bond (CU); Single bond Universal (SBU)). After surface treatment, resin discs were bonded to each lithium disilicate using dual-cure resin cement. Bonded specimens were stored in distilled water for 24 h and then subjected to microtensile bond strength (μTBS) test. Failure modes were examined under stereomicroscope. Microscopic observation of bonded interfaces was analyzed using scanning electron microscopy. The μTBS data were statistically analyzed. Regardless of silane treatment, all groups treated with HF showed higher bonding strengths compared to those that were not treated with HF (p < 0.05). In groups treated with HF, the bonding strength increased after silane application (p < 0.05) except PB and CU (p > 0.05). Adhesive failures were dominant in all groups, but some mixed failures were observed in ABU treated with HF and silane. While most of the specimens that were not treated with silane after HF application only showed loose bonding between the ceramic and resin cement due to partial gaps, the specimens treated with silane application after HF showed a tight ceramic–resin interface. In conclusion, the silane in universal adhesives did not effectively improve the bonding strength between lithium disilicate and resin cement.
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Affiliation(s)
- Yu-Ri Kim
- Department of Conservative Dentistry, Dental Research Institute, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-R.K.); (S.-A.S.)
| | - Jae-Hoon Kim
- Department of Dental Education, Dental Research Institute, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea;
| | - Sung-Ae Son
- Department of Conservative Dentistry, Dental Research Institute, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-R.K.); (S.-A.S.)
| | - Jeong-Kil Park
- Department of Conservative Dentistry, Dental Research Institute, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan 50612, Korea; (Y.-R.K.); (S.-A.S.)
- Correspondence: ; Tel.: +82-55-360-5221
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Jeon JH, Kim YH, Kim KA, Kim YR, Woo SJ, Choi YJ, Rhie GE. A putative exosporium lipoprotein GBAA0190 of Bacillus anthracis as a potential anthrax vaccine candidate. BMC Immunol 2021; 22:20. [PMID: 33743606 PMCID: PMC7981958 DOI: 10.1186/s12865-021-00414-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/10/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bacillus ancthracis causes cutaneous, pulmonary, or gastrointestinal forms of anthrax. B. anthracis is a pathogenic bacterium that is potentially to be used in bioterrorism because it can be produced in the form of spores. Currently, protective antigen (PA)-based vaccines are being used for the prevention of anthrax, but it is necessary to develop more safe and effective vaccines due to their prolonged immunization schedules and adverse reactions. METHODS We selected the lipoprotein GBAA0190, a potent inducer of host immune response, present in anthrax spores as a novel potential vaccine candidate. Then, we evaluated its immune-stimulating activity in the bone marrow-derived macrophages (BMDMs) using enzyme-linked immunosorbent assay (ELISA) and Western blot analysis. Protective efficacy of GBAA0190 was evaluated in the guinea pig (GP) model. RESULTS The recombinant GBAA0190 (r0190) protein induced the expression of various inflammatory cytokines including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and macrophage inflammatory protein-1α (MIP-1α) in the BMDMs. These immune responses were mediated through toll-like receptor 1/2 via activation of mitogen-activated protein (MAP) kinase and Nuclear factor-κB (NF-κB) pathways. We demonstrated that not only immunization of r0190 alone, but also combined immunization with r0190 and recombinant PA showed significant protective efficacy against B. anthracis spore challenges in the GP model. CONCLUSIONS Our results suggest that r0190 may be a potential target for anthrax vaccine.
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Affiliation(s)
- Jun Ho Jeon
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Yeon Hee Kim
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Kyung Ae Kim
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Yu-Ri Kim
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Sun-Je Woo
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Ye Jin Choi
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea
| | - Gi-Eun Rhie
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, 28159, Republic of Korea.
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Park DB, Ahn BE, Son H, Lee YR, Kim YR, Jo SK, Chun JH, Yu JY, Choi MM, Rhie GE. Construction of a bivalent vaccine against anthrax and smallpox using the attenuated vaccinia virus KVAC103. BMC Microbiol 2021; 21:76. [PMID: 33685392 PMCID: PMC7938549 DOI: 10.1186/s12866-021-02121-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 02/09/2021] [Indexed: 11/10/2022] Open
Abstract
Background Anthrax and smallpox are high-risk infectious diseases, and considered as potential agents for bioterrorism. To develop an effective countermeasure for these diseases, we constructed a bivalent vaccine against both anthrax and smallpox by integrating a gene encoding protective antigen (PA) of Bacillus anthracis to the genome of the attenuated vaccinia virus strain, KVAC103. Results Immunization with this bivalent vaccine induced antibodies against both PA and vaccinia virus in a mouse model. We also observed that the efficacy of this vaccine can be enhanced by combined immunization with immunoadjuvant-expressing KVAC103. Mouse groups co-immunized with PA-expressing KVAC103 and either interleukin-15 (IL-15) or cholera toxin subunit A (CTA1)-expressing KVAC103 showed increased anti-PA IgG titer and survival rate against B. anthracis spore challenge compared to the group immunized with PA-expressing KVAC103 alone. Conclusions We demonstrated that the attenuated smallpox vaccine KVAC103 is an available platform for a multivalent vaccine and co-immunization of immunoadjuvants can improve vaccine performance. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02121-5.
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Affiliation(s)
- Deok Bum Park
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea.,Present address: Forensic DNA Division, Gwangju Institute, National Forensic Service, Jeonnam, South Korea
| | - Bo-Eun Ahn
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Hosun Son
- Division of Vaccine Research, Korea National Institute of Health, Korea Centers for Disease Control and Prevention, Cheongju, South Korea
| | - Young-Ran Lee
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea.,Present address: Convergence Bioceramic Materials Center, Korea Institute of Ceramic Engineering and Technology, Cheongju, South Korea
| | - Yu-Ri Kim
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Su Kyoung Jo
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Jeong-Hoon Chun
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Jae-Yon Yu
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Myung-Min Choi
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea
| | - Gi-Eun Rhie
- Division of High-risk Pathogens, Bureau of Infectious Disease Diagnosis Control, Korea Disease Control and Prevention Agency, Cheongju, South Korea.
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Lee JC, Song BS, Kang YM, Kim YR, Kang YE, Lee JH, Shong M, Yi HS. Effect of Thyroid-Stimulating Hormone Suppression on Muscle Function After Total Thyroidectomy in Patients With Thyroid Cancer. Front Endocrinol (Lausanne) 2021; 12:769074. [PMID: 34858341 PMCID: PMC8631429 DOI: 10.3389/fendo.2021.769074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/22/2021] [Indexed: 12/30/2022] Open
Abstract
CONTEXT Thyroid-stimulating hormone (TSH) suppression is recommended to reduce tumor recurrence following surgery for differentiated thyroid cancer (DTC). However, prolonged subclinical hyperthyroidism caused by levothyroxine treatment has deleterious effects on various organs. OBJECTIVE To evaluate the relationships of TSH concentration with muscle mass, muscle strength, and physical performance related to sarcopenia in patients with DTC undergoing TSH suppression following surgery. METHODS We studied 134 patients of >60 years who were undergoing TSH suppression therapy following surgery for DTC. We evaluated muscle mass and muscle function-related parameters and diagnosed sarcopenia using the threshold for Asian people. RESULTS The participants were 68.3 ± 7.2 years old and 36/134 (26.9%) were diagnosed with sarcopenia. They were allocated to high-TSH and low-TSH groups using a threshold concentration of 0.40 μU/mL, and grip strength was significantly lower in the low-TSH group. The data were further analyzed according to age and sex, and in the low-TSH group, male participants and those of <70 years were found to have significantly lower grip strength. CONCLUSIONS Low-TSH concentrations is associated with low grip strength, and this is most pronounced in individuals of <70 years of age. Therefore, muscle function should be considered an adverse effect of TSH suppression in patients with DTC who undergo TSH suppression therapy, especially in men of <70 years.
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Affiliation(s)
- Jun Choul Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Byong-Sop Song
- Department of Core Laboratory of Translational Research, Biomedical Convergence Research Center, Chungnam National University Hospital, Daejeon, South Korea
| | - Young Mi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yu-Ri Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yea Eun Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Ju Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hyon-Seung Yi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, South Korea
- Department of Core Laboratory of Translational Research, Biomedical Convergence Research Center, Chungnam National University Hospital, Daejeon, South Korea
- *Correspondence: Hyon-Seung Yi,
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Park HJ, Choi SJ, Kim Y, Cho MS, Kim YR, Oh JE. Mealtime Behaviors and Food Preferences of Students with Autism Spectrum Disorder. Foods 2020; 10:E49. [PMID: 33375338 PMCID: PMC7824552 DOI: 10.3390/foods10010049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/13/2022] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by a lack of social communication and restrictive, repetitive behaviors or interests. This study aimed to examine the mealtime behaviors and food preferences of students with ASD. An online questionnaire on mealtime behavior and food preferences of ASD students was conducted by caregivers including parents, and the average age of ASD students was 14.1 ± 6.1. The analysis of mealtime behavior resulted in classification into three clusters: cluster 1, the "low-level problematic mealtime behavior group"; cluster 2, the "mid-level problematic mealtime behavior group"; and cluster 3, the "high-level problematic mealtime behavior group". Cluster 1 included older students than other clusters and their own specific dietary rituals. Meanwhile, cluster 3 included younger students than other clusters, high-level problematic mealtime behavior, and a low preference for food. In particular, there were significant differences in age and food preference for each subdivided ASD group according to their eating behaviors. Therefore, the content and method of nutrition education for ASD students' needs a detailed approach according to the characteristics of each group.
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Affiliation(s)
- Hae Jin Park
- Department of Nutritional Science & Food Management, Ewha Womans University, Seoul 03760, Korea; (H.J.P.); (S.J.C.); (Y.K.); (M.S.C.)
| | - Su Jin Choi
- Department of Nutritional Science & Food Management, Ewha Womans University, Seoul 03760, Korea; (H.J.P.); (S.J.C.); (Y.K.); (M.S.C.)
| | - Yuri Kim
- Department of Nutritional Science & Food Management, Ewha Womans University, Seoul 03760, Korea; (H.J.P.); (S.J.C.); (Y.K.); (M.S.C.)
| | - Mi Sook Cho
- Department of Nutritional Science & Food Management, Ewha Womans University, Seoul 03760, Korea; (H.J.P.); (S.J.C.); (Y.K.); (M.S.C.)
| | - Yu-Ri Kim
- Department of Special Education, Ewha Womans University, Seoul 03760, Korea;
| | - Ji Eun Oh
- College of Science & Industry Convergence, Ewha Womans University, Seoul 03760, Korea
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Rieuwpassa IE, Sumintarti S, Kim YR, Matandung M, Matongan GSA. Non-invasive early diagnosis of oral squamous cell carcinoma using piezoelectric biosensor. J Dentomaxillofac Sci 2020. [DOI: 10.15562/jdmfs.v0i0.942] [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: 11/05/2022] Open
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15
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Kim GR, Ramakrishnan SR, Ameer K, Chung N, Kim YR, Kwon JH. Irradiation effects on chemical and functional qualities of ready-to-eat Saengshik, a cereal health food. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Lee M, Han J, Kim YR, Kwak N, Kim JH, Park O, Shin S, Moon HS, Kim HJ, Jang MJ, Yim JJ. Multidrug-resistant tuberculosis in South Korea: a retrospective analysis of national registry data in 2011-2015. Int J Tuberc Lung Dis 2020; 23:850-857. [PMID: 31439118 DOI: 10.5588/ijtld.18.0658] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Multidrug-resistant tuberculosis (MDR-TB) poses a threat to public health as a result of high treatment costs and unsatisfactory outcomes.OBJECTIVE: To elucidate trend, demographic and clinical characteristics and treatment outcomes of patients with MDR-TB between 2011 and 2015 in South Korea.METHOD: Data of patients with MDR-TB diagnosed between 1 January 2011 and 31 December 2015 were retrieved from the nationwide Internet-based TB notification system and analysed retrospectively.RESULTS: During the study period, 5192 MDR-TB patients were notified. We identified an increasing number of MDR-TB patients among foreign populations (from 1.3% to 7.7%), decreasing resistance rates to other anti-TB drugs (e.g., resistance to pyrazinamide, from 40.9% to 28.2%), a decreasing interval from treatment initiation to negative conversion of sputum culture (from 165.7 to 103.7 days) and shortening of treatment duration (719.7 to 613.2 days). However, treatment success rates did not change, and had an average of 65.7%.CONCLUSION: Despite decreasing resistance rates to other drugs and faster treatment responses, treatment outcomes did not improve during the study period. Strict management of MDR-TB patients on treatment should be adopted to improve treatment outcomes.
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Affiliation(s)
- M Lee
- International Tuberculosis Research Center, Seoul
| | - J Han
- Medical Research Collaborating Center, Seoul National University Hospital, Seoul
| | - Y R Kim
- International Tuberculosis Research Center, Seoul
| | - N Kwak
- Medical Squadron, Operation Command, Republic of Korea Air Force, Osan
| | - J H Kim
- Gijang Public Health Center, Busan
| | - O Park
- Division of Risk Assessment and International Cooperation, Korea Centers for Disease Control and Prevention, Cheongju
| | - S Shin
- Korean Institute of Tuberculosis, Cheongju
| | - H S Moon
- Division of Pulmonology, Department of Internal Medicine, St Paul's Hospital, The Catholic University of Korea College of Medicine, Seoul
| | - H J Kim
- Korean Institute of Tuberculosis, Cheongju
| | - M-J Jang
- Medical Research Collaborating Center, Seoul National University Hospital, Seoul
| | - J-J Yim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Ham YK, Song DH, Ha JH, Park SK, Kim YR, Chin KB, Kim HW. Efficacy of ascorbic acid on processing characteristics and lipid oxidation of pre-rigor salted chicken breasts during vacuum refrigerated storage. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Song DH, Ham YK, Ha JH, Kim YR, Chin KB, Kim HW. Impacts of pre-rigor salting with KCl on technological properties of ground chicken breast. Poult Sci 2019; 99:597-603. [PMID: 32416846 PMCID: PMC7587853 DOI: 10.3382/ps/pez527] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 09/02/2019] [Indexed: 11/20/2022] Open
Abstract
The objective of this study was to determine the impact of pre-rigor salting using KCl on the technological properties of ground chicken breast. Chicken breast muscle (M. pectoralis major and minor) was hot-debonded and salted with 2% NaCl (w/w), 1% NaCl+1% KCl mixture, or 2% KCl, respectively, within 30 min after slaughter. Post-rigor salting treatment was prepared with 2% NaCl at 24 h postmortem. All pre-rigor salting treatments showed higher ultimate pH, protein solubility, and final yield than post-rigor salting treatment (P < 0.05). However, the positive effects of pre-rigor salting on chicken breast differed by salt type. Pre-rigor salting with KCl resulted in higher ultimate pH and R-values of chicken breast than pre-rigor salting with NaCl (P < 0.05). Despite the high ultimate pH, pre-rigor salting with KCl resulted in lower protein solubility, final yield, and hardness of chicken breast than pre-rigor salting with NaCl (P < 0.05). These results indicate that pre-rigor salting with KCl could contribute to the maintenance of relatively excellent technological properties of pre-rigor chicken breasts compared to post-rigor salted chicken breast. However, this current study also suggests that the impact of KCl on technological properties in pre-rigor chicken breast, such as water-holding capacity, protein solubility, and texture, could be less effective than pre-rigor salting with NaCl at an identical percentage concentration.
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Affiliation(s)
- D H Song
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - Y K Ham
- Department of Animal Resources Technology, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - J H Ha
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - Y R Kim
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - K B Chin
- Department of Animal Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - H W Kim
- Department of Animal Science & Biotechnology, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea.
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Kim YR, Choi HG, Yeom HA. Relationships between Exercise Behavior and Anger Control of Hospital Nurses. Asian Nurs Res (Korean Soc Nurs Sci) 2019; 13:86-91. [PMID: 30677536 DOI: 10.1016/j.anr.2019.01.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 01/11/2019] [Accepted: 01/15/2019] [Indexed: 12/12/2022] Open
Abstract
PURPOSE This study examined the relationships between nurses' exercise behavior and their anger control using a cross-sectional descriptive design. METHODS The participants were 290 nurses in South Korea, who completed a survey questionnaire on general characteristics, the stage of exercise behavior change, and anger emotion, evaluated using state anger and anger expression method. RESULTS Those who engaged in regular exercise behavior exhibited lower levels of state anger and higher levels of anger control than those who did not. In the prediction model, a significant association of exercise behavior with anger control was found. The levels of anger control decreased as the age, education level, and work experiences of nurses decreased. Anger control scores were significantly higher than anger suppression scores and anger expression-out scores in the hospital nurses. CONCLUSION Engaging in regular exercise may help nurses manage anger emotions better.
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Affiliation(s)
- Yu-Ri Kim
- Department of Nursing, Uijeongbu St. Mary's Hospital, Uijeongbu, Republic of Korea
| | - Han-Gyo Choi
- College of Nursing, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye-Ah Yeom
- College of Nursing, The Catholic University of Korea, Seoul, Republic of Korea.
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Lee WS, Choi KJ, Nam GB, Kim YH, Kim J, Kim YH, Kim YR, Park KM. P5752Assessment of force-time integral on radiofrequency lesion size in an in vitro swine contractile model using force sensing technology. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- W S Lee
- YeoSu Jeil Hospital, YeoSu, Korea Republic of
| | - K J Choi
- Asan Medical Center, Electrophysiology, Seoul, Korea Republic of
| | - G B Nam
- Asan Medical Center, Electrophysiology, Seoul, Korea Republic of
| | - Y H Kim
- Asan Medical Center, Electrophysiology, Seoul, Korea Republic of
| | - J Kim
- Asan Medical Center, Electrophysiology, Seoul, Korea Republic of
| | - Y H Kim
- Asan Medical Center, Electrophysiology, Seoul, Korea Republic of
| | - Y R Kim
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - K M Park
- Samsung Medical Center, Electrophysiology, Seoul, Korea Republic of
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Choi Y, Kim SH, Kim SH, Kim JY, Kim YR, Kim TS, Hwang YM, Kim JH, Jang SW, Rho TH, Lee MY, Oh YS. P1902Terminating the induced atrial tachyarrhythmia after complete pulmonary vein isolation during catheter ablation for persistent atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Choi
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - S H Kim
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - S H Kim
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - J Y Kim
- Uijeongbu St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Uijeongbu, Korea Republic of
| | - Y R Kim
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - T S Kim
- Daejeon St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Daejeon, Korea Republic of
| | - Y M Hwang
- St. Vincent's Hospital, Division of Cardiology, Department of Internal Medicine, Suwon, Korea Republic of
| | - J H Kim
- St. Vincent's Hospital, Division of Cardiology, Department of Internal Medicine, Suwon, Korea Republic of
| | - S W Jang
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - T H Rho
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - M Y Lee
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - Y S Oh
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
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Jang WJ, Lee JM, Kim YR, Hasan MT, Kong IS. Complete Genome Sequence of Bacillus sp. SJ-10 (KCCM 90078) Producing 400-kDa Poly-γ-glutamic Acid. Curr Microbiol 2018; 75:1378-1383. [DOI: 10.1007/s00284-018-1533-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/16/2018] [Indexed: 12/25/2022]
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23
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Kim YR, Jang SW, Hwang YM, Kim JY, Kim TS, Kim SH, Kim JH, Oh YS, Lee MY, Rho TH. P397Long-term clinical outcomes of misdosing NOACs in patients with atrial fibrillation. Europace 2018. [DOI: 10.1093/europace/euy015.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y R Kim
- The Catholic University of Korea Incheon St. Mary's Hospital, Internal Medicine, Incheon, Korea Republic of
| | - S W Jang
- The Catholic University of Korea, Seoul, Korea Republic of
| | - Y M Hwang
- The Catholic University of Korea, Seoul, Korea Republic of
| | - J Y Kim
- The Catholic University of Korea, Seoul, Korea Republic of
| | - T S Kim
- The Catholic University of Korea, Seoul, Korea Republic of
| | - S H Kim
- The Catholic University of Korea, Seoul, Korea Republic of
| | - J H Kim
- The Catholic University of Korea, Seoul, Korea Republic of
| | - Y S Oh
- The Catholic University of Korea, Seoul, Korea Republic of
| | - M Y Lee
- The Catholic University of Korea, Seoul, Korea Republic of
| | - T H Rho
- The Catholic University of Korea, Seoul, Korea Republic of
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Ryu S, Park S, Lee JH, Kim YR, Na HS, Lim HS, Choi HY, Hwang IY, Lee JG, Park ZW, Oh WY, Kim JM, Choi SE. A Study on CYP2C19 and CYP2D6 Polymorphic Effects on Pharmacokinetics and Pharmacodynamics of Amitriptyline in Healthy Koreans. Clin Transl Sci 2017; 10:93-101. [PMID: 28296334 PMCID: PMC5355968 DOI: 10.1111/cts.12451] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 10/11/2016] [Accepted: 01/13/2017] [Indexed: 12/16/2022] Open
Abstract
We performed a double-blinded, genotype-based stratification study to explore the pharmacokinetics and pharmacodynamics of amitriptyline according to CYP2C19 and CYP2D6 genotype in Korean subjects. Twenty-four healthy adults were grouped by genotype of CYP2C19 and CYP2D6. After a single dose of 25 mg of amitriptyline, blood samples were collected and anticholinergic effects were measured. The extent of N-demethylation of amitriptyline significantly decreased in subjects carrying two nonfunctional alleles of CYP2C19. The extent of hydroxylation of amitriptyline or nortriptyline was significantly reduced in subjects carrying two CYP2D6 decreased functional alleles compared with those with no or one decreased functional allele. The overall metabolic pathway of amitriptyline was more likely to be dominated by CYP2C19 than CYP2D6. The gene variations of CYP2C19 and CYP2D6 did not change the pharmacodynamic effect. The findings of this study will provide useful information on individualized drug treatment with amitriptyline considering both CYP2D6 and CYP2C19 gene variations.
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Affiliation(s)
- S Ryu
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - S Park
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J H Lee
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - Y R Kim
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - H S Na
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - H S Lim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, University of Ulsan, Asan Medical Center, Republic of Korea
| | - H Y Choi
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, University of Ulsan, Asan Medical Center, Republic of Korea
| | - I Y Hwang
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J G Lee
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - Z W Park
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - W Y Oh
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - J M Kim
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
| | - S E Choi
- Clinical Research Division, National Institute of Food and Drug Safety, Ministry of Food and Drug Safety, Republic of Korea
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Kim YR, Seo SC, Yoo Y, Choung JT. Are children with asthma in South Korea also associated with vitamin D deficiency? Environ Health Toxicol 2017; 32:e2017005. [PMID: 28231689 PMCID: PMC5480427 DOI: 10.5620/eht.e2017005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/18/2017] [Indexed: 06/06/2023]
Abstract
Recently, epidemiologic studies have shown that the lack of serum vitamin D levels may be associated with high asthma prevalence, but its effect is still controversial, depending on season, area, and food consumption. We aimed to examine the association of serum vitamin D levels with the prevalence of pediatric asthma in Korea. A total of 80 children (50 asthmatic children and 30 healthy controls) aged 6-14 years were participated in this study. Serum vitamin D levels were measured and compared between the two groups. Moreover, the relationship of serum vitamin D levels with results of pulmonary function test and environmental factors (lifestyle habits and residential factors) collected by a questionnaire survey were examined in asthmatic patients. Serum vitamin D levels in asthmatic children (16.63±4.20 ng/mL) were significantly lower than that in healthy controls (24.24±6.76 ng/mL) (p<0.05). Also, we found that the prevalence of asthma increase to 0.79-fold (odds ratio, 0.79; 95% confidence interval, 0.71 to 0.88; p<0.001) as serum vitamin D level is 1 ng/mL decreases. The increased time spent in outdoor could affect the increases of serum vitamin D levels significantly. However, no associations of serum vitamin D with pulmonary function and residential environmental factors (i.e., housing type, living floor, and indoor activity time) were observed. Our findings suggest that serum vitamin D levels were also associated with pediatric asthma in Korea. Moreover, management of serum vitamin D level in asthmatic children would be a promising approach for preventing exaggeration of their severity.
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Affiliation(s)
- Yu-Ri Kim
- Environmental Health Center for Asthma, Korea University Medical Center, Seoul, Korea
| | - Sung Chul Seo
- Department of Industrial Health, College of Applied Sciences, Catholic University of Pusan, Busan, Korea
| | - Young Yoo
- Environmental Health Center for Asthma, Korea University Medical Center, Seoul, Korea
- Department of Pediatrics, Korea University College of Medicine, Seoul, Korea
| | - Ji Tae Choung
- Environmental Health Center for Asthma, Korea University Medical Center, Seoul, Korea
- Department of Pediatrics, Korea University College of Medicine, Seoul, Korea
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Jeong JH, Hong GP, Kim YR, Hong DG, Ha JE, Yeom JI, Kim EJ, Kim HI, Lee KS. Expulsion of Fibroids to the Endometrial Cavity after Magnetic Resonance Imaging-guided High Intensity Focused Ultrasound Surgery (MRgFUS) Treatment of Intramural Uterine Fibroids. J Menopausal Med 2017; 22:139-145. [PMID: 28119893 PMCID: PMC5256358 DOI: 10.6118/jmm.2016.22.3.139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES This report seeks to introduce some cases of the patients who received magnetic resonance imaging (MRI)-guided high intensity focused ultrasound (HIFU) surgery (MRgFUS)-based intramural uterine fibroids treatment where the post-MRgFUS intramural uterine fibroids decreased in its volume and protruded towards the endometrial cavity to be expelled by hysteroscopy. METHODS Of the 157 patients who had received MRgFUS treatment in the Obstetrics and Gynecology of the Hospital from March, 2015 to February, 2016; this study examined 6 of the cases where, after high intensity focused ultrasound treatment, intramural uterine fibroids protruded towards the endometrial cavity to be removed by hysteroscopic myomectomy. The high intensity focused ultrasound utilized in the cases were Philips Achieva 1.5 Tesla MR (Philips Healthcare, Best, The Netherlands) and Sonalleve HIFU system. RESULTS The volume of fibroids ranged from 26.0 cm3 to 199.5 cm3, averaging 95.6 cm3. The major axis length ranged from 4.0 cm to 8.2 cm, averaging 6.3 cm. Fibroid location in all of the patients was in intramural uterine before treatment but after the high intensity focused ultrasound treatment, the fibroids were observed to protrude towards the endometrial cavity in at least Day 5 or up to Day 73 to allow hysteroscopic myomectomy. CONCLUSIONS In some cases, after an intramural uterine fibroid is treated with MRgFUS, fibroid volume is decreased and the fibroid protrudes towards the endometrial cavity. In this case, hysteroscopic myomectomy can be a useful solution.
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Affiliation(s)
- Jae-Hyeok Jeong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Gil Pyo Hong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Yu-Ri Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Da Gyo Hong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Jae-Eun Ha
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Jung In Yeom
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Eun-Jeong Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Hyung-Il Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Kyu-Sup Lee
- Department of Obstetrics & Gynecology, Pusan National University School of Medicine, Busan, Korea
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Jeong JH, Hong GP, Kim YR, Ha JE, Lee KS. Clinical Consideration of Treatment to Ablate Uterine Fibroids with Magnetic Resonance Imaging-guided High Intensity Focused Ultrasound (MRgFUS): Sonalleve. J Menopausal Med 2016; 22:94-107. [PMID: 27617244 PMCID: PMC5016510 DOI: 10.6118/jmm.2016.22.2.94] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 07/17/2016] [Accepted: 07/26/2016] [Indexed: 12/18/2022] Open
Abstract
Objectives Magnetic resonance imaging (MRI)-guided high intensity focused ultrasound surgery (MRgFUS) is a newly emerging non-invasive technique for the treatment of uterine fibroids. The purpose of this study is to review the clinical impact of MRgFUS. Methods This study examined 157 patients. The high intensity focused ultrasound (HIFU) utilized in this study was Philips Achieva 1.5 Tesla MR (Philips Healthcare, Best, the Netherlands) and Sonalleve HIFU system. The patients were followed in post-operative Month 1, Month 3, and Month 6 to investigate any change. Then, these were further classified according to the use of uterine stimulant (oxytocin) in parallel, Funaki Type of uterine fibroid, HIFU intensity, and non-perfused volume (NPV) ratio. Results When the uterine stimulant was utilized, the HIFU intensity was measured at significantly lower levels, compared with the group not using uterine stimulant, and treatment duration was significantly. The NPV ratio was found significantly higher in the group using uterine stimulant. Concerning the correlation between Funaki Type of uterine fibroid and average sonication power, it was found that the closer to Type I, the lower the sonication power, the shorter the treatment duration, and the higher the NPV ratio significantly. Conclusions In this study, it was found that the lower the Funaki Types of uterine fibroids, and the higher the NPV ratio immediately after the operation, the larger the uterine fibroid volume decrease and SSS change were. Also, if uterine stimulant was used in parallel in treatment, treatment duration and HIFU intensity could become shorter and lower.
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Affiliation(s)
- Jae-Hyeok Jeong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Gil Pyo Hong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Yu-Ri Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Jae-Eun Ha
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Kyu-Sup Lee
- Department of Obstetrics & Gynecology, Pusan National University School of Medicine, Busan, Korea
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Kim YR, Yoo WG. Effects of trajectory exercise using a laser pointer on electromyographic activities of the gluteus maximus and erector spinae during bridging exercises. J Phys Ther Sci 2016; 28:632-4. [PMID: 27065555 PMCID: PMC4793023 DOI: 10.1589/jpts.28.632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/19/2015] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The purpose of this study was to investigate activities of the hip extensors and erector spinae during bridging exercise by using instruments with a laser pointer on the pelvic belt. [Subjects] Twelve subjects (age, 23 to 33 years) with non-specific low back pain volunteered for this study. [Methods] Subjects performed bridging exercises with and without trajectory exercises by using a laser pointer fixed to a pelvic strap. The erector spinae, gluteus maximus and hamstring activities with and without trajectory exercises using a laser pointer were recorded on using electromyography. [Results] Compared to the without laser pointer group, the group that underwent bridging with trajectory exercises using a laser pointer had significantly higher gluteus maximus activity and significantly lower erector spinae activity. Significantly higher gluteus maximus/erector spinae activity ratios were observed when performing trajectory exercises using a laser pointer during bridging exercises. [Conclusion] This result suggests that trajectory exercises using a laser pointer during a bridging exercise would be effective for improving gluteus maximus activity.
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Affiliation(s)
- Yu-Ri Kim
- Department of Rehabilitation Science, The Graduate School, Inje University, Republic of Korea
| | - Won-Gyu Yoo
- Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea
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Jeong JH, Kim YR, Hong KP, Ha JE, Kim EJ, Hong DK, Lee KS. Clinical experience with single-port access laparoscopic cystectomy and myomectomy. Clin Exp Reprod Med 2016; 43:44-50. [PMID: 27104157 PMCID: PMC4838581 DOI: 10.5653/cerm.2016.43.1.44] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 11/13/2015] [Accepted: 12/01/2015] [Indexed: 11/28/2022] Open
Abstract
Objective This study was performed to assess our clinical experience with single-port access (SPA) laparoscopic cystectomy and myomectomy and the surgical outcomes of those procedures at our institution. Methods The authors evaluated the surgical outcomes of SPA laparoscopic cystectomy in 293 patients and SPA laparoscopic myomectomy in 246 patients. The surgical outcomes comprised operation time, the amount of blood loss during the operation, the change in hemoglobin (before and after the operation), the change in hematocrit (before and after the operation), switching to the multi-port access method, complications, transfusions, and the duration of the postoperative hospital stay. Results The Pearson correlation coefficient and the Spearman correlation coefficient between the operation time and the amount of blood loss were 0.312 and 0.321 for SPA laparoscopic cystectomy, respectively, and 0.706 and 0.674 for SPA laparoscopic myomectomy, respectively. The drops in hemoglobin and hematocrit were 1.33±0.78 g/dL and 4.14%±2.45%, respectively, in SPA laparoscopic cystectomy, while the corresponding figures were 1.34±1.13 g/dL and 4.17%±3.24% in SPA laparoscopic myomectomy, respectively. Conclusion This study reported the surgical outcomes of SPA laparoscopic cystectomy and myomectomy and compared them to previously published findings on traditional laparoscopic cystectomy and myomectomy. No significant differences were found in the surgical outcomes between SPA and traditional laparoscopic cystectomy and myomectomy.
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Affiliation(s)
- Jae-Hyeok Jeong
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Yu-Ri Kim
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Kil-Pyo Hong
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Jae-Eun Ha
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Eun-Jeong Kim
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Da-Kyo Hong
- Department of Obstetrics and Gynecology, Hwamyeong Ilsin Christian Hospital, Busan, Korea
| | - Kyu-Sup Lee
- Department of Obstetrics and Gynecology, Pusan National University School of Medicine, Busan, Korea
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Affiliation(s)
- Yu-Ri Kim
- Department of Special Education; Ewha Womans University; Seoul 120-750 Korea
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Han SH, Lee TH, Jang JY, Song HK, Hong SK, Kim YR, Han BS. Mixture of Extracts of Cynanchum wilfordii and Phlomis umbrosa Turcz. Does Not Have an Estrogenic Effect in Ovariectomized Rats. ACTA ACUST UNITED AC 2015. [DOI: 10.9721/kjfst.2015.47.5.667] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim DG, Kim EY, Kim YR, Kong IS. Construction of chimeric human epidermal growth factor containing short collagen-binding domain moieties for use as a wound tissue healing agent. J Microbiol Biotechnol 2015; 25:119-26. [PMID: 25152055 DOI: 10.4014/jmb.1405.05073] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Among the various human growth factors, epidermal growth factor (hEGF, consisting of 53 amino acids) has various effects on cell regeneration, stimulation of proliferation, migration of keratinocytes, formation of granulation tissues, and stimulation of fibroblast motility, which are important for wound healing. Owing to their multiple activities, EGFs are used as pharmaceutical and cosmetic agents. However, their low productivity, limited target specificity, and short half-life inhibit their application as therapeutic agents. To overcome these obstacles, we fused the collagen-binding domain (CBD) of Vibrio mimicus metalloprotease to EGF protein. About 18 or 12 amino acids (aa) (of the 33 total amino acids), which were essential for collagen-binding activity, were combined with the N- and C-termini of EGF. We constructed, expressed, and purified EGF (53 aa)-CBD (18 aa), EGF (53 aa)-CBD (12 aa), CBD (18 aa)-EGF (53 aa), and CBD (12 aa)-EGF (53 aa). These purified recombinant proteins increased the numbers of cells in treated specimens compared with non-treated specimens and control hEGF samples. The collagen-binding activities were also evaluated. Furthermore, CBD-hybridized hEGF induced phosphorylation of the EGF receptor. These results suggested that these fusion proteins could be applicable as small therapeutic agents in wound tissue healing.
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Affiliation(s)
- Dong-Gyun Kim
- Biotechnology Research Division, National Fisheries Research and Development Institute, Busan 619-705, Republic of Korea
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Kim SO, Jang S, Kim CM, Kim YR, Sohn HS. Consensus Validated List of Potentially Inappropriate Medication for the Elderly and Their Prevalence in South Korea. INT J GERONTOL 2015. [DOI: 10.1016/j.ijge.2015.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Yang JJ, Kim YR, Jeong MG, Yuk YJ, Kim HJ, Park SG. Synthesis and Electrochemical Characteristics of Spherical Li4Ti5O12/CNT Composite Materials for Hybrid Capacitors. J ELECTROCHEM SCI TE 2015. [DOI: 10.33961/jecst.2015.6.2.59] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Yang JJ, Kim YR, Jeong MG, Yuk YJ, Kim HJ, Park SG. Synthesis and Electrochemical Characteristics of Spherical Li4Ti5O12/CNT Composite Materials for Hybrid Capacitors. J ELECTROCHEM SCI TE 2015. [DOI: 10.5229/jecst.2015.6.2.59] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Jeong JH, Kim YR, Kim EJ, Moon SH, Park MH, Kim JT, Kim JH, Lee KS. Comparison of Surgical Outcomes according to Suturing Methods in Single Port Access Laparoscopic Myomectomy. J Menopausal Med 2015; 21:47-55. [PMID: 26046038 PMCID: PMC4452814 DOI: 10.6118/jmm.2015.21.1.47] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 03/26/2015] [Accepted: 03/31/2015] [Indexed: 11/11/2022] Open
Abstract
Objectives This study was performed to consider the clinical experience of surgical outcome of single port access (SPA) laparoscopic myomectomy according to suturing methods. Methods The authors operated with 2 suturing method in SPA laparoscopic myomectomy for 246 patients and compared the surgical outcomes. Results The some significant difference of surgical outcome according to two suturing methods was demonstrated. Operating time was 100.50 minutes (± 42.09 minutes) in interrupted suture method group than 121.04 minutes (± 61.56 minutes) in continuous interlocking suture method group (P = 0.021). Estimated blood loss was less 222.59 mL (± 144.94 mL) in interrupted suture group than 340.11 mL (± 380.62 mL) in continuous interlocking suture method group (P = 0.042). Conclusion This experience suggests that interrupted suture method was effective for operating time and estimated blood loss than continuous interlocking method in SPA laparoscopic myomectomy.
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Affiliation(s)
- Jae-Heok Jeong
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Yu-Ri Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Eun-Jeong Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Soo-Hyeon Moon
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Mi-Hwa Park
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Jeong-Tae Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Jeong-Hye Kim
- Department of Obstetrics & Gynecology, Hwa Myung Il Sin Christian Hospital, Busan, Korea
| | - Kyu-Sup Lee
- Department of Obstetrics & Gynecology, Pusan National University School of Medicine, Busan, Korea
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Han SH, Cho JH, Jung HS, Suh JY, Kim JK, Kim YR, Cho G, Cho H. Robust MR assessment of cerebral blood volume and mean vessel size using SPION-enhanced ultrashort echo acquisition. Neuroimage 2015; 112:382-389. [PMID: 25818683 DOI: 10.1016/j.neuroimage.2015.03.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 01/21/2023] Open
Abstract
Intravascular superparamagnetic iron oxide nanoparticles (SPION)-enhanced MR transverse relaxation rates (∆R2(⁎) and ∆R2) are widely used to investigate in vivo vascular parameters, such as the cerebral blood volume (CBV), microvascular volume (MVV), and mean vessel size index (mVSI, ∆R2(⁎)/∆R2). Although highly efficient, regional comparison of vascular parameters acquired using gradient-echo based ∆R2(⁎) is hampered by its high sensitivity to magnetic field perturbations arising from air-tissue interfaces and large vessels. To minimize such demerits, we took advantage of the dual contrast property of SPION and both theoretically and experimentally verified the direct benefit of replacing gradient-echo based ∆R2(⁎) measurement with ultra-short echo time (UTE)-based ∆R1 contrast to generate the robust CBV and mVSI maps. The UTE acquisition minimized the local measurement errors from susceptibility perturbations and enabled dose-independent CBV measurement using the vessel/tissue ∆R1 ratio, while independent spin-echo acquisition enabled simultaneous ∆R2 measurement and mVSI calculation of the cortex, cerebellum, and olfactory bulb, which are animal brain regions typified by significant susceptibility-associated measurement errors.
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Affiliation(s)
- S H Han
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - J H Cho
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - H S Jung
- Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - J Y Suh
- Korea Basic Science Institute, Ochang, South Korea
| | - J K Kim
- Asan Medical Center, Seoul, South Korea
| | - Y R Kim
- Martinos Center for Biomedical Imaging, Charlestown, MA, USA
| | - G Cho
- Korea Basic Science Institute, Ochang, South Korea
| | - H Cho
- Ulsan National Institute of Science and Technology, Ulsan, South Korea.
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Choung JT, Kim YR, Seo S, Yoo Y. The Association Between Vitamin D Insufficiency and Children with Asthma. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kim YR, Lee EJ, Park SH, Kwon HJ, An SSA, Son SW, Seo YR, Pie JE, Yoon M, Kim JH, Kim MK. Interactive survey of consumer awareness of nanotechnologies and nanoparticles in consumer products in South Korea. Int J Nanomedicine 2015; 9 Suppl 2:11-20. [PMID: 25565822 PMCID: PMC4279854 DOI: 10.2147/ijn.s57919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The purpose of our study was to understand consumers' risk awareness and need for relevant information about nanotechnology and nanoparticles contained in products currently being sold in Korea. METHODS One thousand and seven adult consumers (aged 20-50 years) were randomly selected from all over South Korea between November 1 and 9, 2010. We surveyed the origin and degree of their concern and their need for information and education regarding nanomaterials. RESULTS Analysis of the survey results showed no significant differences in responses by sex, age, and level of education, but significant differences were found in responses based on average monthly household income. Our research showed that consumers have vague expectations for and positive image of nanotechnology and nanoproducts but do not clearly understand what they are. In addition, we found that preparing and disseminating information to consumers is required in order to provide correct information about nanotechnology to the public. CONCLUSION A communication system should be established among the multiple stakeholders involved with nanomaterials to address consumer expectations and concerns. Further, a safety evaluation system must be set up, the results of which should be processed by a reliable expert group so they can be disseminated to the public.
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Affiliation(s)
- Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea
| | - Eun Jeong Lee
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea
| | - Sung Ha Park
- Department of Biochemistry, University of Bath, Bath, UK
| | - Hyo Jin Kwon
- Department of Medical Education, Korea University Medical School and College, Seoul, South Korea
| | - Seong Soo A An
- Department of Bionanotechnology, Gachon University, Seongnam, South Korea
| | - Sang Wook Son
- Department of Dermatology, Korea University Medical School and College
| | - Young Rok Seo
- Department of Life Science, Institute of Environmental Medicine for Green Chemistry, Dongguk University, Seoul, South Korea
| | - Jae-Eun Pie
- Department of Food and Nutrition, College of Science and Engineering, Anyang University, Anyang, Korea
| | | | | | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, South Korea
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Kim YR, Eom KS. Simultaneous Inhibition of CXCR4 and VLA-4 Exhibits Combinatorial Effect in Overcoming Stroma-Mediated Chemotherapy Resistance in Mantle Cell Lymphoma Cells. Immune Netw 2014; 14:296-306. [PMID: 25550696 PMCID: PMC4275387 DOI: 10.4110/in.2014.14.6.296] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 11/03/2014] [Accepted: 11/10/2014] [Indexed: 01/09/2023] Open
Abstract
There is growing evidence that crosstalk between mantle cell lymphoma (MCL) cells and stromal microenvironments, such as bone marrow and secondary lymphoid tissues, promotes tumor progression by enhancing survival and growth as well as drug resistance of MCL cells. Recent advances in the understanding of lymphoma microenvironment have led to the identification of crucial factors involved in the crosstalk and subsequent generation of their targeted agents. In the present study, we evaluated the combinatory effect of blocking antibodies (Ab) targeting CXCR4 and VLA-4, both of which were known to play significant roles in the induction of environment-mediated drug resistance (EMDR) in MCL cell line, Jeko-1. Simultaneous treatment with anti-CXCR4 and anti-VLA-4 Ab not only reduced the migration of Jeko-1 cells into the protective stromal cells, but also enhanced sensitivity of Jeko-1 to a chemotherapeutic agent to a greater degree than with either Ab alone. These combinatorial effects were associated with decreased phosphorylation of ERK1/2, AKT and NF-κB. Importantly, drug resistance could not be overcome once the adhesion of Jeko-1 to the stromal occurred despite the combined use of Abs, suggesting that the efforts to mitigate migration of MCLs should be attempted as much as possible. Our results provide a basis for a future development of therapeutic strategies targeting both CXCR4 and VLA-4, such as Ab combinations or bispecific antibodies, to improve treatment outcomes of MCL with grave prognosis.
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Affiliation(s)
- Yu-Ri Kim
- Cancer Research Institute in the Catholic University of Korea, Seoul 137-701, Korea
| | - Ki-Seong Eom
- Cancer Research Institute in the Catholic University of Korea, Seoul 137-701, Korea. ; Division of Hematology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea
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Shim KH, Jeong KH, Bae SO, Kang MO, Maeng EH, Choi CS, Kim YR, Hulme J, Lee EK, Kim MK, An SSA. Assessment of ZnO and SiO2 nanoparticle permeability through and toxicity to the blood-brain barrier using Evans blue and TEM. Int J Nanomedicine 2014; 9 Suppl 2:225-33. [PMID: 25565840 PMCID: PMC4279764 DOI: 10.2147/ijn.s58205] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
As increasing variants of nanoparticles (NPs) are being used in various products, it has become apparent that size alone can no longer adequately explain the variety of generated toxic profiles. Recent studies with NPs have suggested that various sizes of NPs could determine in vitro toxicity. In an attempt to address concerns regarding neurotoxicity of zinc oxide (ZnO) and silica (SiO2) NPs, these were examined after exposing them via oral, dermal, and intravenous administrations of NPs and their toxicological effects on the brain over a prescribed period of time were assessed. After 28 days of repeated oral administrations of ZnO or SiO2 independently, possibly due to damages to the blood brain barrier (BBB), neurotoxicity, were investigated by Evans blue technique. Next, in order to assess whether ZnO NPs could compromise the BBB, ZnO NPs were intravenously injected on day 0, 7, 14, 21 and 28 no further treatment was administered for 62 days. Deposition of SiO2 in brain from repeated dermal and oral administrations for 90 days were evaluated by transmission electron microscopy coupled with scanning energy-dispersive X-ray spectroscopy. Physiochemical profiles were principally determined on particle size at the beginning of the current toxicity investigations on ZnO and SiO2 NPs. The BBB was found to be intact after independent repeated oral administrations of ZnO or SiO2 NPs for 28 days, suggesting no significant damage. Neuronal death was also not observed after the intravenous administrations of ZnO NPs. After 90 days of repeated dermal and oral administration of SiO2 NPs, no deposition of NPs was observed in hippocampus, striatum, and cerebellum regions using transmission electron microscope analyses. These observations suggest that the BBB was not compromised and was able to block penetration of ZnO and SiO2 NPs, resulting in significant neurotoxic effects. Moreover, absence of SiO2 in three regions of brain after dermal and oral administrations for 90 days suggested that brain was protected from SiO2. No behavior change was observed in all studies, suggesting that 90 days may not be long enough to assess full neurotoxicity of NPs in vivo.
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Affiliation(s)
- Kyu Hwan Shim
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
| | - Kyeong-Hoon Jeong
- Korea Mouse Metabolic Phenotyping Center, Lee GilYa Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea ; Division of Endocrinology and Metabolism, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Sun Oh Bae
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
| | - Min O Kang
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
| | - Eun Ho Maeng
- Department of Analysis, Korea Testing and Research Institute (KTR), Gimpo, Republic of Korea
| | - Cheol Soo Choi
- Korea Mouse Metabolic Phenotyping Center, Lee GilYa Cancer and Diabetes Institute, Gachon University, Incheon, Republic of Korea ; Division of Endocrinology and Metabolism, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - John Hulme
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
| | - Eun Kyu Lee
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Seong Soo A An
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam-si, Republic of Korea
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Hong JS, Park MK, Kim MS, Lim JH, Park GJ, Maeng EH, Shin JH, Kim YR, Kim MK, Lee JK, Park JA, Kim JC, Shin HC. Effect of zinc oxide nanoparticles on dams and embryo-fetal development in rats. Int J Nanomedicine 2014; 9 Suppl 2:145-57. [PMID: 25565833 PMCID: PMC4279755 DOI: 10.2147/ijn.s57931] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
This study investigated the potential adverse effects of zinc oxide nanoparticles (ZnOSM20[−] NPs; negatively charged, 20 nm) on pregnant dams and embryo–fetal development after maternal exposure over the period of gestational days 5–19 with Sprague Dawley rats. ZnOSM20(−) NPs were administered to pregnant rats by gavage at 0 mg/kg/day, 100 mg/kg/day, 200 mg/kg/day, and 400 mg/kg/day. All dams were subjected to caesarean section on gestational day 20, and all the fetuses were examined for external, visceral, and skeletal alterations. Toxicity in the dams manifested as significantly decreased body weight at 400 mg/kg/day and decreased liver weight, and increased adrenal glands weight at 200 mg/kg/day and 400 mg/kg/day. However, no treatment-related difference in the number of corpora lutea, the number of implantation sites, the implantation rate (%), resorption, dead fetuses, litter size, fetal deaths, fetal and placental weights, and sex ratio were observed between the groups. Morphological examinations of the fetuses demonstrated no significant difference in the incidences of abnormalities between the groups. No significant difference was found in the Zn content of fetal tissue between the control and high-dose groups. These results showed that a 15-day repeated oral dose of ZnOSM20(−) was minimally maternotoxic at dose of 200 mg/kg/day and 400 mg/kg/day.
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Affiliation(s)
- Jeong-Sup Hong
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea ; College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Myeong-Kyu Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Min-Seok Kim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Jeong-Hyeon Lim
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Gil-Jong Park
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Eun-Ho Maeng
- Health Care Research Laboratory, Korea Testing and Research Institute, Gimpo, Korea
| | - Jae-Ho Shin
- Department of Biomedical Laboratory Science, Eulji University, Seongnam-si, Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Jong-Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungcheongbuk-do, Gwangju, Korea
| | - Jin-A Park
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Jong-Choon Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
| | - Ho-Chul Shin
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
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Kim CS, Nguyen HD, Ignacio RM, Kim JH, Cho HC, Maeng EH, Kim YR, Kim MK, Park BK, Kim SK. Immunotoxicity of zinc oxide nanoparticles with different size and electrostatic charge. Int J Nanomedicine 2014; 9 Suppl 2:195-205. [PMID: 25565837 PMCID: PMC4279726 DOI: 10.2147/ijn.s57935] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
While zinc oxide (ZnO) nanoparticles (NPs) have been recognized to have promising applications in biomedicine, their immunotoxicity has been inconsistent and even contradictory. To address this issue, we investigated whether ZnO NPs with different size (20 or 100 nm) and electrostatic charge (positive or negative) would cause immunotoxicity in vitro and in vivo, and explored their underlying molecular mechanism. Using Raw 264.7 cell line, we examined the immunotoxicity mechanism of ZnO NPs as cell viability. We found that in a cell viability assay, ZnO NPs with different size and charge could induce differential cytotoxicity to Raw 264.7 cells. Specifically, the positively charged ZnO NPs exerted higher cytotoxicity than the negatively charged ones. Next, to gauge systemic immunotoxicity, we assessed immune responses of C57BL/6 mice after oral administration of 750 mg/kg/day dose of ZnO NPs for 2 weeks. In parallel, ZnO NPs did not alter the cell-mediated immune response in mice but suppressed innate immunity such as natural killer cell activity. The CD4(+)/CD8(+) ratio, a marker for matured T-cells was slightly reduced, which implies the alteration of immune status induced by ZnO NPs. Accordingly, nitric oxide production from splenocyte culture supernatant in ZnO NP-fed mice was lower than control. Consistently, serum levels of pro/anti-inflammatory (interleukin [IL]-1β, tumor necrosis factor-α, and IL-10) and T helper-1 cytokines (interferon-γ and IL-12p70) in ZnO NP-fed mice were significantly suppressed. Collectively, our results indicate that different sized and charged ZnO NPs would cause in vitro and in vivo immunotoxicity, of which nature is an immunosuppression.
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Affiliation(s)
- Cheol-Su Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Hai-Duong Nguyen
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Rosa Mistica Ignacio
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Jae-Hyun Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Hyeon-Cheol Cho
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Eun Ho Maeng
- Healthcare Laboratory, Medical Device Evaluation Team, Korea Testing and Research Institute, Gimpo-si, Gyeonggi-do, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Medical School and College, Korea University, Seoul, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Medical School and College, Korea University, Seoul, Republic of Korea
| | - Bae-Keun Park
- Institute of Lifestyle Medicine, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Soo-Ki Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
- Institute of Lifestyle Medicine, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
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45
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Kwon JY, Kim HL, Lee JY, Ju YH, Kim JS, Kang SH, Kim YR, Lee JK, Jeong J, Kim MK, Maeng EH, Seo YR. Undetactable levels of genotoxicity of SiO2 nanoparticles in in vitro and in vivo tests. Int J Nanomedicine 2014; 9 Suppl 2:173-81. [PMID: 25565835 PMCID: PMC4279720 DOI: 10.2147/ijn.s57933] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Silica dioxide (SiO2) has been used in various industrial products, including paints and coatings, plastics, synthetic rubbers, and adhesives. Several studies have investigated the genotoxic effects of SiO2; however, the results remain controversial due to variations in the evaluation methods applied in determining its physicochemical properties. Thus, well characterized chemicals and standardized methods are needed for better assessment of the genotoxicity of nanoparticles. Methods The genotoxicity of SiO2 was evaluated using two types of well characterized SiO2, ie, 20 nm (−) charge (SiO EN20(−)2) and 100 nm (−) charge (SiO EN100(−)2). Four end point genotoxicity tests, ie, the bacterial mutation assay, in vitro chromosomal aberration test, in vivo comet assay, and in vivo micronucleus test, were conducted following the test guidelines of the Organization for Economic Cooperation and Development (OECD) with application of Good Laboratory Practice. Results No statistically significant differences were found in the bacterial mutation assay, in vitro chromosomal aberration test, in vivo comet assay, and in vivo micronucleus test when tested for induction of genotoxicity in both two types of SiO2 nanoparticles. Conclusion These results suggest that SiO2 nanoparticles, in particular SiO2EN20(−) and SiO2EN100(−), are not genotoxic in both in vitro and in vivo systems under OECD guidelines. Further, the results were generated in accordance with OECD test guidelines, and Good Laboratory Practice application; it can be accepted as reliable information regarding SiO2-induced genotoxicity.
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Affiliation(s)
- Jee Young Kwon
- Department of Life Science, Institute of Environmental Medicine, Dongguk University, Seoul, Republic of Korea
| | - Hye Lim Kim
- Department of Life Science, Institute of Environmental Medicine, Dongguk University, Seoul, Republic of Korea
| | - Jong Yun Lee
- Korea Testing and Research Institute, Korea University College of Medicine, Seoul, Republic of Korea
| | - Yo Han Ju
- Korea Testing and Research Institute, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ji Soo Kim
- Korea Testing and Research Institute, Korea University College of Medicine, Seoul, Republic of Korea
| | - Seung Hun Kang
- Department of Life Science, Institute of Environmental Medicine, Dongguk University, Seoul, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jong-Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungcheongbuk-do, Republic of Korea
| | - Jayoung Jeong
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungcheongbuk-do, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Eun Ho Maeng
- Korea Testing and Research Institute, Korea University College of Medicine, Seoul, Republic of Korea
| | - Young Rok Seo
- Department of Life Science, Institute of Environmental Medicine, Dongguk University, Seoul, Republic of Korea
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46
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Lee JA, Kim MK, Paek HJ, Kim YR, Kim MK, Lee JK, Jeong J, Choi SJ. Tissue distribution and excretion kinetics of orally administered silica nanoparticles in rats. Int J Nanomedicine 2014; 9 Suppl 2:251-60. [PMID: 25565843 PMCID: PMC4279759 DOI: 10.2147/ijn.s57939] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose The effects of particle size on the tissue distribution and excretion kinetics of silica nanoparticles and their biological fates were investigated following a single oral administration to male and female rats. Methods Silica nanoparticles of two different sizes (20 nm and 100 nm) were orally administered to male and female rats, respectively. Tissue distribution kinetics, excretion profiles, and fates in tissues were analyzed using elemental analysis and transmission electron microscopy. Results The differently sized silica nanoparticles mainly distributed to kidneys and liver for 3 days post-administration and, to some extent, to lungs and spleen for 2 days post-administration, regardless of particle size or sex. Transmission electron microscopy and energy dispersive spectroscopy studies in tissues demonstrated almost intact particles in liver, but partially decomposed particles with an irregular morphology were found in kidneys, especially in rats that had been administered 20 nm nanoparticles. Size-dependent excretion kinetics were apparent and the smaller 20 nm particles were found to be more rapidly eliminated than the larger 100 nm particles. Elimination profiles showed 7%–8% of silica nanoparticles were excreted via urine, but most nanoparticles were excreted via feces, regardless of particle size or sex. Conclusion The kidneys, liver, lungs, and spleen were found to be the target organs of orally-administered silica nanoparticles in rats, and this organ distribution was not affected by particle size or animal sex. In vivo, silica nanoparticles were found to retain their particulate form, although more decomposition was observed in kidneys, especially for 20 nm particles. Urinary and fecal excretion pathways were determined to play roles in the elimination of silica nanoparticles, but 20 nm particles were secreted more rapidly, presumably because they are more easily decomposed. These findings will be of interest to those seeking to predict potential toxicological effects of silica nanoparticles on target organs.
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Affiliation(s)
- Jeong-A Lee
- Department of Food Science and Technology, Seoul Women's University, Seoul, Republic of Korea
| | - Mi-Kyung Kim
- Department of Food Science and Technology, Seoul Women's University, Seoul, Republic of Korea
| | - Hee-Jeong Paek
- Department of Food Science and Technology, Seoul Women's University, Seoul, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Jong-Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungchungbuk-do, Republic of Korea
| | - Jayoung Jeong
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Chungchungbuk-do, Republic of Korea
| | - Soo-Jin Choi
- Department of Food Science and Technology, Seoul Women's University, Seoul, Republic of Korea
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Kim YR, Lee SY, Lee EJ, Park SH, Seong NW, Seo HS, Shin SS, Kim SJ, Meang EH, Park MK, Kim MS, Kim CS, Kim SK, Son SW, Seo YR, Kang BH, Han BS, An SSA, Lee BJ, Kim MK. Toxicity of colloidal silica nanoparticles administered orally for 90 days in rats. Int J Nanomedicine 2014; 9 Suppl 2:67-78. [PMID: 25565827 PMCID: PMC4279771 DOI: 10.2147/ijn.s57925] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
This study was undertaken to investigate the potential toxicity and establish the no observed adverse effect level (NOAEL) and target organ(s) of negatively charged colloidal silica particles of different sizes, ie, SiO2EN20(−) (20 nm) or SiO2EN100(−) 2(100 nm), administered by gavage in Sprague-Dawley rats. After verification of the physicochemical properties of the SiO2 particles to be tested, a preliminary dose range-finding study and 90-day repeated dose study were conducted according to the Organisation for Economic Cooperation and Development test guideline. Based on the results of the 14-day dose range-finding study, a high dose was determined to be 2,000 mg/kg, and middle and low doses were set at 1,000 and 500 mg/kg, respectively. In the 90-day toxicity study, there were no animal deaths in relation to administration of SiO2 particles of either size. In addition, no treatment-related clinical changes or histopathological findings were observed in any of the experimental groups. Moreover, no difference in toxic effects from chronic exposure to SiO2EN20(−)(20 nm) or SiO2EN100(−) (100 nm) was observed. The results of this study indicate that the NOAEL for SiO2EN20(−) and SiO2EN100(−) would most likely be 2,000 mg/kg, and no target organ was identified in rats of either sex.
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Affiliation(s)
- Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Seung-Young Lee
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Eun Jeong Lee
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Sung Ha Park
- Department of Biochemistry, University of Bath, Bath, UK
| | - Nak-won Seong
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Heung-Sik Seo
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Sung-Sup Shin
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Seon-Ju Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Eun-Ho Meang
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Myeong-Kyu Park
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Min-Seok Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Republic of Korea
| | - Cheol-Su Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Gangwon, Republic of Korea
| | - Soo-Ki Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Gangwon, Republic of Korea
| | - Sang Wook Son
- Department of Dermatology, Korea University Medical School and College, Seoul, Republic of Korea
| | - Young Rok Seo
- Department of Life Science, Institute of Environmental Medicine for Green Chemistry, Dongguk University, Seoul, Republic of Korea
| | - Boo Hyon Kang
- Nonclinical Research Institute, Chemon Inc, Gyeonggi, Republic of Korea
| | - Beom Seok Han
- Toxicological Research Center, Hoseo University, Chungnam, Republic of Korea
| | - Seong Soo A An
- Department of Bionanotechnology, Gachon University, Gyeonggi, Republic of Korea
| | - Beom-Jun Lee
- College of Veterinary Medicine, Chungbuk National University, Chungbuk, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Republic of Korea
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48
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Kim JH, Kim CS, Ignacio RMC, Kim DH, Sajo MEJ, Maeng EH, Qi XF, Park SE, Kim YR, Kim MK, Lee KJ, Kim SK. Immunotoxicity of silicon dioxide nanoparticles with different sizes and electrostatic charge. Int J Nanomedicine 2014; 9 Suppl 2:183-93. [PMID: 25565836 PMCID: PMC4279855 DOI: 10.2147/ijn.s57934] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Silicon dioxide (SiO2) nanoparticles (NPs) have been widely used in the biomedical field, such as in drug delivery and gene therapy. However, little is known about the biological effects and potential hazards of SiO2. Herein, the colloidal SiO2 NPs with two different sizes (20 nm and 100 nm) and different charges (L-arginine modified: SiO2 (EN20[R]), SiO2 (EN100[R]); and negative: SiO2 (EN20[-]), SiO2 (EN100[-]) were orally administered (750 mg/kg/day) in female C57BL/6 mice for 14 days. Assessments of immunotoxicity include hematology profiling, reactive oxygen species generation and their antioxidant effect, stimulation assays for B- and T-lymphocytes, the activity of natural killer (NK) cells, and cytokine profiling. In vitro toxicity was also investigated in the RAW 264.7 cell line. When the cellularity of mouse spleen was evaluated, there was an overall decrease in the proliferation of B- and T-cells for all the groups fed with SiO2 NPs. Specifically, the SiO2 (EN20(-)) NPs showed the most pronounced reduction. In addition, the nitric oxide production and NK cell activity in SiO2 NP-fed mice were significantly suppressed. Moreover, there was a decrease in the serum concentration of inflammatory cytokines such as interleukin (IL)-1β, IL-12 (p70), IL-6, tumor necrosis factor-α, and interferon-γ. To elucidate the cytotoxicity mechanism of SiO2 in vivo, an in vitro study using the RAW 264.7 cell line was performed. Both the size and charge of SiO2 using murine macrophage RAW 264.7 cells decreased cell viability dose-dependently. Collectively, our data indicate that different sized and charged SiO2 NPs would cause differential immunotoxicity. Interestingly, the small-sized and negatively charged SiO2 NPs showed the most potent in vivo immunotoxicity by way of suppressing the proliferation of lymphocytes, depressing the killing activity of NK cells, and decreasing proinflammatory cytokine production, thus leading to immunosuppression.
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Affiliation(s)
- Jae-Hyun Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Cheol-Su Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Rosa Mistica Coles Ignacio
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Dong-Heui Kim
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Ma Easter Joy Sajo
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Eun Ho Maeng
- Healthcare Laboratory, Medical Device Evaluation, Korea Testing and Research Institute, Wonju-si, Gangwon-do, Republic of Korea
| | - Xu-Feng Qi
- Key Laboratory for Regenerative Medicine of Ministry of Education and Department of Developmental and Regenerative Biology, School of Life Science and Technology, Ji Nan University, Guangzhou, People's Republic of China
| | - Seong-Eun Park
- Institute of Lifestyle Medicine, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Medical School and College, Korea University, Seoul, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Medical School and College, Korea University, Seoul, Republic of Korea
| | - Kyu-Jae Lee
- Department of Environmental Medical Biology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea
| | - Soo-Ki Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea ; Institute of Lifestyle Medicine, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea ; Institute of Biomaterials, Yonsei University, Wonju Campus, Wonju-si, Gangwon-do, Republic of Korea
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49
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Kim YR, Park JI, Lee EJ, Park SH, Seong NW, Kim JH, Kim GY, Meang EH, Hong JS, Kim SH, Koh SB, Kim MS, Kim CS, Kim SK, Son SW, Seo YR, Kang BH, Han BS, An SSA, Yun HI, Kim MK. Toxicity of 100 nm zinc oxide nanoparticles: a report of 90-day repeated oral administration in Sprague Dawley rats. Int J Nanomedicine 2014; 9 Suppl 2:109-26. [PMID: 25565830 PMCID: PMC4279774 DOI: 10.2147/ijn.s57928] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Nanoparticles (NPs) are used commercially in health and fitness fields, but information about the toxicity and mechanisms underlying the toxic effects of NPs is still very limited. The aim of this study is to investigate the toxic effect(s) of 100 nm negatively (ZnOAE100[−]) or positively (ZnOAE100[+]) charged zinc oxide (ZnO) NPs administered by gavage in Sprague Dawley rats, to establish a no observed adverse effect level, and to identify target organ(s). After verification of the primary particle size, morphology, hydrodynamic size, and zeta potential of each test article, we performed a 90-day study according to Organisation for Economic Co-operation and Development test guideline 408. For the 90-day study, the high dose was set at 500 mg/kg and the middle and low doses were set at 125 mg/kg and 31.25 mg/kg, respectively. Both ZnO NPs had significant changes in hematological and blood biochemical analysis, which could correlate with anemia-related parameters, in the 500 mg/kg groups of both sexes. Histopathological examination showed significant adverse effects (by both test articles) in the stomach, pancreas, eye, and prostate gland tissues, but the particle charge did not affect the tendency or the degree of the lesions. We speculate that this inflammatory damage might result from continuous irritation caused by both test articles. Therefore, the target organs for both ZnOAE100(−) and ZnOAE100(+) are considered to be the stomach, pancreas, eye, and prostate gland. Also, the no observed adverse effect level for both test articles was identified as 31.25 mg/kg for both sexes, because the adverse effects were observed at all doses greater than 125 mg/kg.
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Affiliation(s)
- Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Jong-Il Park
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Eun Jeong Lee
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
| | - Sung Ha Park
- Department of Biochemistry, University of Bath, Bath, UK
| | - Nak-won Seong
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Jun-Ho Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Geon-Yong Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Eun-Ho Meang
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Jeong-Sup Hong
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Su-Hyon Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Sang-Bum Koh
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Min-Seok Kim
- General Toxicology Team, Korea Testing and Research Institute, Seoul, Korea
| | - Cheol-Su Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon, Korea
| | - Soo-Ki Kim
- Department of Microbiology, Wonju College of Medicine, Yonsei University, Wonju-si, Gangwon, Korea
| | - Sang Wook Son
- Department of Life Science, Institute of Environmental Medicine for Green Chemistry, Dongguk University, Seoul, Korea
| | - Young Rok Seo
- Nonclinical Research Institute, Chemon Inc., Yongin, Gyeonggi, Korea
| | - Boo Hyon Kang
- Toxicological Research Center, Hoseo University, Ansan, Chungnam, Korea
| | - Beom Seok Han
- Department of Bionanotechnology, Gachon University, Seongnam, Gyeonggi, Korea
| | - Seong Soo A An
- College of Veterinary Medicine, Chungnam National University, Daejon, Korea
| | - Hyo-In Yun
- College of Veterinary Medicine, Chungnam National University, Daejon, Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University Medical School and College, Seoul, Korea
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50
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Ryu HJ, Seo MY, Jung SK, Maeng EH, Lee SY, Jang DH, Lee TJ, Jo KY, Kim YR, Cho KB, Kim MK, Lee BJ, Son SW. Zinc oxide nanoparticles: a 90-day repeated-dose dermal toxicity study in rats. Int J Nanomedicine 2014; 9 Suppl 2:137-44. [PMID: 25565832 PMCID: PMC4279760 DOI: 10.2147/ijn.s57930] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Zinc oxide (ZnO) works as a long-lasting, broad-spectrum physical sunblock, and can prevent skin cancer, sunburn, and photoaging. Nanosized ZnO particles are used often in sunscreens due to consumer preference over larger sizes, which appear opaque when dermally applied. Although the US Food and Drug Administration approved the use of nanoparticles (NPs) in sunscreens in 1999, there are ongoing safety concerns. The aim of this study was to evaluate the subchronic toxicity of ZnO NPs after dermal application according to the Organization for Economic Cooperation and Development Test Guidelines 411 using Good Laboratory Practice. Sprague Dawley rats were randomly divided into eight (one control, one vehicle control, three experimental, and three recovery) groups. Different concentrations of ZnO NPs were dermally applied to the rats in the experimental groups for 90 days. Clinical observations as well as weight and food consumption were measured and recorded daily. Hematology and biochemistry parameters were determined. Gross pathologic and histopathologic examinations were performed on selected tissues from all animals. Analyses of tissue were undertaken to determine target organ tissue distribution. There was no increased mortality in the experimental group. Although there was dose-dependent irritation at the site of application, there were no abnormal findings related to ZnO NPs in other organs. Increased concentrations of ZnO in the liver, small intestine, large intestine, and feces were thought to result from oral ingestion of ZnO NPs via licking. Penetration of ZnO NPs through the skin seemed to be limited via the dermal route. This study demonstrates that there was no observed adverse effect of ZnO NPs up to 1,000 mg/kg body weight when they are applied dermally.
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Affiliation(s)
- Hwa Jung Ryu
- Department of Dermatology, Korea University College of Medicine, Seoul
| | - Mu Yeb Seo
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Sung Kyu Jung
- Department of Dermatology, Korea University College of Medicine, Seoul
| | - Eun Ho Maeng
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Seung-Young Lee
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Dong-Hyouk Jang
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Taek-Jin Lee
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Ki-Yeon Jo
- Korea Testing and Research Institute, Gyunggido, Republic of Korea
| | - Yu-Ri Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyu-Bong Cho
- Department of Clinical Laboratory Science, Shinheung College, Uijeongbu, Republic of Korea
| | - Meyoung-Kon Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Beom Jun Lee
- College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Sang Wook Son
- Department of Dermatology, Korea University College of Medicine, Seoul
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