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Lee KY, Shin KS, Jung JH, Cho HW, Kwon KH, Kim YL. Clinical study on screw loosening in dental implant prostheses: a 6-year retrospective study. J Korean Assoc Oral Maxillofac Surg 2020; 46:133-142. [PMID: 32364353 PMCID: PMC7222622 DOI: 10.5125/jkaoms.2020.46.2.133] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 06/23/2019] [Revised: 10/21/2019] [Accepted: 11/08/2019] [Indexed: 11/16/2022] Open
Abstract
Objectives In this study, we determined the incidence and pattern of screw loosening in patients who received dental implants. Materials and Methods Patients who received implants between January 2008 and October 2013 and completed their prosthetic rehabilitation were evaluated for the incidence, frequency, and onset of screw loosening using dental charts and radiographs. The association between each factor and screw loosening was analyzed using the chi-square test and a multivariate analysis with binary logistic regression models (P<0.05). Results Total 1,928 implants were placed in 837 patients (448 males, 389 females), whose follow-up period after loading varied from 0.25 to 70 months (mean period, 31.5 months). Screw loosening occurred in 7.2% of implants. Most cases occurred less than six months after loading. Among those, 22.3% experienced recurrent screw loosening. Screw loosening was most common in the molar region (8.5%) and frequently associated with an implant diameter of ≥5 mm (14.2%). External implant–abutment connections (8.9%) and screw-retained implant prostheses (10.1%) showed higher incidence of problems than internal implant–abutment connections and cement-retained implants, respectively. Screw loosening was most common in implant prostheses with single crowns (14.0%). Conclusion Within the limits of the current study, we conclude that the incidence of screw loosening differs significantly according to the position of implant placement, the type of implant and manufacturer, implant diameter, the type of implant–abutment connection, the type of retention in the implant prosthesis, and the type of implant prosthesis.
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Affiliation(s)
- Ki-Young Lee
- Departments of Prosthodontics, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Kyung Su Shin
- Departments of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Ji-Hye Jung
- Departments of Prosthodontics, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Hye-Won Cho
- Departments of Prosthodontics, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Departments of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Yu-Lee Kim
- Departments of Prosthodontics, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
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Kwon KH, Shin KS, Yeon SH, Kwon DG. Application of botulinum toxin in maxillofacial field: Part II. Wrinkle, intraoral ulcer, and cranio-maxillofacial pain. Maxillofac Plast Reconstr Surg 2019; 41:42. [PMID: 31649903 PMCID: PMC6795672 DOI: 10.1186/s40902-019-0224-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/26/2019] [Indexed: 11/10/2022] Open
Abstract
Botulinum toxin (BTX) is used in various ways such as temporarily resolving muscular problems in musculoskeletal temporomandibular disorders, inducing a decrease in bruxism through a change in muscular patterns in a patient’s bruxism, and solving problems in patients with tension headache. And also, BTX is widely used in cosmetic applications for the treatment of facial wrinkles after local injection, but conditions such as temporomandibular joint disorders, headache, and neuropathic facial pain could be treated with this drug. In this report, we will discuss the clinical use of BTX for facial wrinkle, intraoral ulcer, and cranio-maxillofacial pain with previous studies and share our case.
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Affiliation(s)
- Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Kyung Su Shin
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Sung Hee Yeon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Dae Gun Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
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Kwon KH, Shin KS, Yeon SH, Kwon DG. Application of botulinum toxin in maxillofacial field: Part III. Ancillary treatment for maxillofacial surgery and summary. Maxillofac Plast Reconstr Surg 2019; 41:45. [PMID: 31709199 PMCID: PMC6813409 DOI: 10.1186/s40902-019-0226-0] [Citation(s) in RCA: 6] [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] [Received: 06/20/2019] [Accepted: 08/30/2019] [Indexed: 11/10/2022] Open
Abstract
Botulinum toxin (BTX) has various therapeutic indications: bruxism, square jaw, facial wrinkle, oral ulcer and maxillofacial pain, etc. In this paper, we will discuss the effectiveness of using BTX in dental implant surgery and orthognathic and orthodontic treatment. We summarized the clinical application of botulinum toxin in the maxillofacial field at the finale.
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Affiliation(s)
- Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Kyung Su Shin
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Sung Hee Yeon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Dae Gun Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
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Kwon KH, Shin KS, Yeon SH, Kwon DG. Application of botulinum toxin in maxillofacial field: part I. Bruxism and square jaw. Maxillofac Plast Reconstr Surg 2019; 41:38. [PMID: 31649901 PMCID: PMC6768934 DOI: 10.1186/s40902-019-0218-0] [Citation(s) in RCA: 8] [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: 06/14/2019] [Accepted: 08/16/2019] [Indexed: 03/07/2023] Open
Abstract
The application of botulinum in oral and maxillofacial surgery begins in 1982, where Jan Carruthers started using it for reducing the muscle mass and smoothing the skin, and since then it has been used for cosmetic purposes. In Korea, it is already being used by various specialties including dentistry (oral and maxillofacial surgery, oral medicine), plastic surgery, dermatology, ophthalmology, general surgery, and orthopedic surgery, etc. Each specialty approaches to Botox with its own medical indications. In this article, we will discuss the maxillofacial application of botulinum toxin, which includes theoretical and practical aspects of such as bruxism and square jaw.
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Affiliation(s)
- Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Kyung Su Shin
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Sung Hee Yeon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
| | - Dae Gun Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, South Korea
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Ko KJ, Kim YH, Kwon KH, Kim MH, Jun KW, Hwang JK, Kim SD, Park SC, Kim JI, Yun SS, Moon IS. Kidney Transplantation Using Expanded-Criteria Deceased Donors: A Comparison With Ideal Deceased Donors and Non-Expanded-Criteria Deceased Donors. Transplant Proc 2018; 50:3222-3227. [PMID: 30577189 DOI: 10.1016/j.transproceed.2018.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/09/2018] [Accepted: 05/23/2018] [Indexed: 12/31/2022]
Abstract
PURPOSE The use of expanded-criteria deceased-donor (ECD) kidneys must be evaluated within the objective perspective of critical organ shortage and graft function and survival. In this study, we aimed to compare the clinical outcomes of ECD reliance with concurrent use of ideal-criteria deceased donors (IDDs) and non-ECDs in adult renal transplantation. METHODS Between February 2000 and December 2015, we analyzed 405 deceased-donor renal transplants, specifically 129 grafts (31.9%) from ECDs, 233 grafts (57.5%) from non-ECDs, and 43 grafts (10.6%) from IDDs. ECDs were classified according to the United Network for Organ Sharing guidelines, while an IDD was defined as a younger person (10-39 years of age) with no medical risk factors who died from a traumatic head injury. Donor and recipient risk factors were separately analyzed and correlated with recipient graft function, and survival was evaluated. RESULTS ECDs were older (56.8 ± 6.3 years); showed increased incidence of hypertension, diabetes, and cerebrovascular brain death; and had a higher pre-retrieval serum creatinine level than the other groups. ECD kidney recipients were also older (50.6 ± 9.8 years), had a shorter waiting time (P = .031), and demonstrated a low frequency of re-transplantation (P = .028). Long-term renal function followed longitudinally was lower in ECD kidney recipients until five years after transplantation, while the glomerular filtration rate (GFR) level at 7 and 10 years did not differ significantly among the groups (P = .074 and .262, respectively). There were no significant differences in terms of graft survival (P = .394) or patient survival (P = .737) among the groups. CONCLUSIONS Although the long-term renal function followed longitudinally was lower in ECD kidney recipients, the use of renal grafts from ECDs is an acceptable method to resolve the disparity of critical organ shortage. However, the classification of the high-risk group should be updated with consideration given to differences in regional characteristics.
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Affiliation(s)
- K J Ko
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Y H Kim
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - K H Kwon
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - M H Kim
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - K W Jun
- Department of Surgery, Bucheon St. Mary's Hospital, Gyeonggi, Republic of Korea
| | - J K Hwang
- Department of Surgery, Daejeon St. Mary's Hospital, Daejeon, Republic of Korea.
| | - S D Kim
- Department of Surgery, Incheon St. Mary's Hospital, Incheon, Republic of Korea
| | - S C Park
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - J I Kim
- Department of Surgery, Uijeongbu St. Mary's Hospital, Gyeonggi, Republic of Korea
| | - S S Yun
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - I S Moon
- Department of Surgery, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
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Park IK, Lee KY, Jeong YK, Kim RH, Kwon DG, Yeon S, Kwon KH. Recording natural head position using an accelerometer and reconstruction from computed tomographic images. J Korean Assoc Oral Maxillofac Surg 2017; 43:256-261. [PMID: 28875140 PMCID: PMC5583200 DOI: 10.5125/jkaoms.2017.43.4.256] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/17/2017] [Accepted: 07/19/2017] [Indexed: 11/23/2022] Open
Abstract
Objectives The concept of natural head position (NHP) was first introduced by Broca in 1862, and was described as a person's stable physiologic position “when a man is standing and his visual axis is horizontal.” NHP has been used routinely for clinical examination; however, a patient's head position is random during cone-beam computed tomography (CBCT) acquisition. To solve this problem, we developed an accelerometer to record patients' NHP and reproduce them for CBCT images. In this study, we also tested the accuracy and reproducibility of our accelerometer. Materials and Methods A total of 15 subjects participated in this study. We invented an accelerometer that measured acceleration on three axes and that could record roll and pitch calculations. Recorded roll and pitch data for each NHP were applied to a reoriented virtual image using three-dimensional (3D) imaging software. The data between the 3D models and the clinical photos were statistically analyzed side by side. Paired t-tests were used to statistically analyze the measurements. Results The average difference in the angles between the clinical photograph and the 3D model was 0.04° for roll and 0.29° for pitch. The paired ttests for the roll data (P=0.781) and the pitch data (P=0.169) showed no significant difference between the clinical photographs and the 3D model (P>0.05). Conclusion By overcoming the limitations of previous NHP-recording techniques, our new method can accurately record patient NHP in a time-efficient manner. Our method can also accurately transfer the NHP to a 3D virtual model.
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Affiliation(s)
- Il Kyung Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea.,College of Dentistry, Graduate School, Wonkwang University, Iksan, Korea
| | - Keun Young Lee
- Department of Orthodontics, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Yeong Kon Jeong
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea.,College of Dentistry, Graduate School, Wonkwang University, Iksan, Korea
| | - Rae Hyong Kim
- College of Dentistry, Graduate School, Wonkwang University, Iksan, Korea
| | - Dae Gun Kwon
- College of Dentistry, Graduate School, Wonkwang University, Iksan, Korea
| | - Sunghee Yeon
- College of Dentistry, Graduate School, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
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Karm MH, Park FD, Kang M, Kim HJ, Kang JW, Kim S, Kim YD, Kim CH, Seo KS, Kwon KH, Kim CH, Lee JW, Hong SW, Lim MH, Nam SK, Cho JM. Comparison of the efficacy and safety of 2% lidocaine HCl with different epinephrine concentration for local anesthesia in participants undergoing surgical extraction of impacted mandibular third molars: A multicenter, randomized, double-blind, crossover, phase IV trial. Medicine (Baltimore) 2017; 96:e6753. [PMID: 28538371 PMCID: PMC5457851 DOI: 10.1097/md.0000000000006753] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The most commonly impacted tooth is the third molar. An impacted third molar can ultimately cause acute pain, infection, tumors, cysts, caries, periodontal disease, and loss of adjacent teeth. Local anesthesia is employed for removing the third molar. This study aimed to evaluate the efficacy and safety of 2% lidocaine with 1:80,000 or 1:200,000 epinephrine for surgical extraction of bilateral impacted mandibular third molars. METHODS Sixty-five healthy participants underwent surgical extraction of bilateral impacted mandibular third molars in 2 separate visits while under local anesthesia with 2% lidocaine with different epinephrine concentration (1:80,000 or 1:200,000) in a double-blind, randomized, crossover trial. Visual analog scale pain scores obtained immediately after surgical extraction were primarily evaluated for the 2 groups receiving different epinephrine concentrations. Visual analog scale pain scores were obtained 2, 4, and 6 hours after administering an anesthetic. Onset and duration of analgesia, onset of pain, intraoperative bleeding, operator's and participant's overall satisfaction, drug dosage, and hemodynamic parameters were evaluated for the 2 groups. RESULTS There were no statistically significant differences between the 2 groups in any measurements except hemodynamic factors (P >.05). Changes in systolic blood pressure and heart rate following anesthetic administration were significantly greater in the group receiving 1:80,000 epinephrine than in that receiving 1:200,000 epinephrine (P ≤.01). CONCLUSION The difference in epinephrine concentration between 1:80,000 and 1:200,000 in 2% lidocaine liquid does not affect the medical efficacy of the anesthetic. Furthermore, 2% lidocaine with 1:200,000 epinephrine has better safety with regard to hemodynamic parameters than 2% lidocaine with 1:80,000 epinephrine. Therefore, we suggest using 2% lidocaine with 1:200,000 epinephrine rather than 2% lidocaine with 1:80,000 epinephrine for surgical extraction of impacted mandibular third molars in hemodynamically unstable patients.
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Affiliation(s)
| | - Fiona Daye Park
- Department of Dental Anesthesiology and Dental Research Institute, Seoul National University School of Dentistry
| | - Moonkyu Kang
- Department of Dental Anesthesiology and Dental Research Institute, Seoul National University School of Dentistry
| | - Hyun Jeong Kim
- Department of Dental Anesthesiology and Dental Research Institute, Seoul National University School of Dentistry
| | - Jeong Wan Kang
- Department of Oral & Maxillofacial Surgery, Yonsei University College of Dentistry, Seoul
| | - Seungoh Kim
- Department of Dental Anesthesiology, Dankook University College of Dentistry, Dankook University, Cheonan-si, Chungnam
| | - Yong-Deok Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University and Institute of Translational Dental Sciences, Pusan National University
| | - Cheul-Hong Kim
- Department of Dental Anesthesia and Pain Medicine, School of Dentistry, Pusan National University and Dental Research Institute, Pusan National University Dental Hospital, Yangsan, Gyeongnam
| | - Kwang-Suk Seo
- Department of Dental Anesthesiology and Dental Research Institute, Seoul National University School of Dentistry
| | - Kyung-Hwan Kwon
- College of Dentistry, Wonkwang University, Iksan city, Jeonbuk
| | - Chul-Hwan Kim
- Department of Oral and Maxillofacial Surgery, Dankook University College of Dentistry, Dankook University, Cheonan-si, Chungnam
| | - Jung-Woo Lee
- Department of Oral & Maxillofacial Surgery, Kyung Hee University Dental Hospital Kyung Hee University School of Dentistry, Seoul
| | - Sung-Woon Hong
- R&D Center, Huons Co. Ltd., College of Pharmacy, Hanyang University, Ansan-si, Kyeonggi-do, Republic of Korea
| | - Mi Hyoung Lim
- R&D Center, Huons Co. Ltd., College of Pharmacy, Hanyang University, Ansan-si, Kyeonggi-do, Republic of Korea
| | - Seung Kwan Nam
- R&D Center, Huons Co. Ltd., College of Pharmacy, Hanyang University, Ansan-si, Kyeonggi-do, Republic of Korea
| | - Jae Min Cho
- R&D Center, Huons Co. Ltd., College of Pharmacy, Hanyang University, Ansan-si, Kyeonggi-do, Republic of Korea
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Yoo JY, Lee JW, Paek SJ, Park WJ, Choi EJ, Kwon KH, Choi MG. Advantages of intraoral and transconjunctival approaches for posterior displacement of a fractured zygomaticomaxillary complex. Maxillofac Plast Reconstr Surg 2016; 38:36. [PMID: 27830139 PMCID: PMC5078153 DOI: 10.1186/s40902-016-0085-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 09/21/2016] [Indexed: 11/20/2022] Open
Abstract
Background Fracture of the zygomaticomaxillary complex (ZMC) is one of the most common facial injuries. A previous study has performed 3D analyses of the parallel and rotational displacements that occur in a fractured ZMC. However, few studies have investigated adequate fixation methods according to these displacements. Here, we assessed whether specific approaches and fixation methods for displacement of ZMC fractures produce esthetic results. Methods Hospital records and pre- and post-surgical computed tomographic scans of patients treated for ZMC fractures at the Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, between January 2010 and December 2015, were selected. Data were analyzed according to the direction of displacement and post-reduction prognosis using a 3D software. Results With ZMC fractures, displacement in the posterior direction occurred most frequently, while displacement in the superior-inferior direction was rare. A reduction using a transconjunctival approach and an intraoral approach was statistically better than that using an intraoral approach, Gillies approach, and lateral canthotomy approach for a posterior displacement (P < 0.05). Conclusions When posterior displacement of a fractured ZMC occurs, use of an intraoral approach and transconjunctival approach simultaneously is recommended for reducing and fixing the displaced fragment accurately.
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Affiliation(s)
- Ji Yong Yoo
- Department of Oral and Maxillofacial Surgery, College of Dentistry, and Dental Hospital, Wonkwang University, 460, Iksandae-ro, Iksan, Jeollabuk-do South Korea
| | - Jang Won Lee
- Department of Oral and Maxillofacial Surgery, College of Dentistry, and Dental Hospital, Wonkwang University, 460, Iksandae-ro, Iksan, Jeollabuk-do South Korea
| | - Seung Jae Paek
- Department of Oral and Maxillofacial Surgery, College of Dentistry, and Dental Hospital, Wonkwang University, 460, Iksandae-ro, Iksan, Jeollabuk-do South Korea
| | - Won Jong Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang Dental Research Institute, Wonkwang University, Iksan, South Korea
| | - Eun Joo Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang Dental Research Institute, Wonkwang University, Iksan, South Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang Dental Research Institute, Wonkwang University, Iksan, South Korea
| | - Moon-Gi Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang Dental Research Institute, Wonkwang University, Iksan, South Korea
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Paek SJ, Park WJ, Shin HS, Choi MG, Kwon KH, Choi EJ. Diseases having an influence on inhibition of angiogenesis as risk factors of osteonecrosis of the jaw. J Korean Assoc Oral Maxillofac Surg 2016; 42:271-277. [PMID: 27847735 PMCID: PMC5104869 DOI: 10.5125/jkaoms.2016.42.5.271] [Citation(s) in RCA: 8] [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: 06/06/2016] [Revised: 09/08/2016] [Accepted: 09/16/2016] [Indexed: 12/13/2022] Open
Abstract
Objectives The objective of this study was to retrospectively investigate the association of diseases having an influence on inhibition of angiogenesis such as hypertension, diabetes mellitus type II, hypercholesterolemia, and rheumatoid arthritis (RA) with the development of osteonecrosis of the jaws. Materials and Methods The 135 patients were allocated into 4 groups of bisphosphonate-related osteonecrosis of the jaw (BRONJ) group (1A); non-BRONJ group (1B); osteonecrosis of the jaw (ONJ) group (2A); and control group (2B), according to histologic results and use of bisphosphonate. This retrospective study was conducted with patients who were treated in one institute from 2012 to 2013. Fisher's exact test and logistic regression analysis were used to analyze the odds ratios of diseases having an influence on inhibition of angiogenesis for development of ONJ. Results The effects of diabetes and hypertension were not statistically significant on development of ONJ. When not considering bisphosphonate use, RA exhibited a high odds ratio of 3.23 (P=0.094), while hyperlipidemia showed an odds ratio of 2.10 (P=0.144) for development of ONJ. More than one disease that had an influence on inhibition of angiogenesis showed a statistically significant odds ratio of 2.54 (P=0.012) for development of ONJ. Conclusion Patients without diseases having an influence on inhibition of angiogenesis were at less risk for developing ONJ.
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Affiliation(s)
- Seung Jae Paek
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Wonkwang University, Iksan, Korea
| | - Won-Jong Park
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Ho-Sung Shin
- Department of Society Dentistry, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Moon-Gi Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Eun Joo Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
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Paek SJ, Yoo JY, Lee JW, Park WJ, Chee YD, Choi MG, Choi EJ, Kwon KH. Changes of lip morphology following mandibular setback surgery using 3D cone-beam computed tomography images. Maxillofac Plast Reconstr Surg 2016; 38:38. [PMID: 27774441 PMCID: PMC5050232 DOI: 10.1186/s40902-016-0082-0] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 09/06/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aims of this study are to evaluate the lip morphology and change of lip commissure after mandibular setback surgery (MSS) for class III patients and analyze association between the amount of mandibular setback and change of lip morphology. METHODS The samples consisted of 14 class III patients treated with MSS using bilateral sagittal split ramus osteotomy. Lateral cephalogram and cone-beam CT were taken before and about 6 months after MSS. Changes in landmarks and variables were measured with 3D software program Ondemand™. Paired and independent t tests were performed for statistical analysis. RESULTS Landmarks in the mouth corner (cheilion, Ch) moved backward and downward (p < .005, p < .01). However, cheilion width was not statistically significantly changed. Landmark in labrale superius (Ls) was not altered significantly. Upper lip prominence angle (ChRt-Ls-ChLt °) became acute. Landmarks in stomion (Stm), labrale inferius (Li) moved backward (p < .005, p < .001). Lower lip prominence angle (ChRt-Li-ChLt °) became obtuse (p < .001). Height of the upper and lower lips was not altered significantly. Length of the upper lip vermilion was increased (p =< 0.01), and length of the lower lip vermilion was decreased (p < .05). Lip area on frontal view was not statistically significantly changed, but the upper lip area on lateral view was increased and change of the lower lip area decreased (p > .05, p < .005). On lateral view, upper lip prominent point (UP) moved downward and stomion moved backward and upward and the angle of Ls-UP-Stm (°) was decreased. Lower lip prominent point (LP) moved backward and downward, and the angle of Stm-LP-Li (°) was increased. Li moved backward. Finally, landmarks in the lower incisor tip (L1) moved backward and upward, but stomion moved downward. After surgery, lower incisor tip (L1) was positioned more superiorly than stomion (p < .05). There were significant associations between horizontal soft tissue and corresponding hard tissue. The posterior movement of L1 was related to statistically significantly about backward and downward movement of cheilion. CONCLUSIONS The lip morphology of patients with dento-skeletal class III malocclusion shows a significant improvement after orthognathic surgery. Three-dimensional lip morphology changes in class III patients after MSS exhibited that cheilion moved backward and downward, upper lip projection angle became acute, lower lip projection angle became obtuse, change of upper lip area on lateral view was increased, change of lower lip area decreased, and morphology of lower lip was protruding. L1 was concerned with the lip tissue change in statistically significant way.
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Affiliation(s)
- Seung Jae Paek
- Department of Oral and Maxillofacial Surgery, College of Dentistry and Dental Hospital, Wonkwang University, Iksan, South Korea
| | - Ji Yong Yoo
- Department of Oral and Maxillofacial Surgery, College of Dentistry and Dental Hospital, Wonkwang University, Iksan, South Korea
| | - Jang Won Lee
- Department of Oral and Maxillofacial Surgery, College of Dentistry and Dental Hospital, Wonkwang University, Iksan, South Korea
| | - Won-Jong Park
- Department of Oral and Maxillofacial Surgery, Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, 460, Iksan-daero, Iksan, Jeollabuk-do 570-749 South Korea
| | - Young Deok Chee
- Department of Oral and Maxillofacial Surgery, Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, 460, Iksan-daero, Iksan, Jeollabuk-do 570-749 South Korea
| | - Moon Gi Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, 460, Iksan-daero, Iksan, Jeollabuk-do 570-749 South Korea
| | - Eun Joo Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, 460, Iksan-daero, Iksan, Jeollabuk-do 570-749 South Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, 460, Iksan-daero, Iksan, Jeollabuk-do 570-749 South Korea
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Lee JW, Yoo JY, Paek SJ, Park WJ, Choi EJ, Choi MG, Kwon KH. Correlations between anatomic variations of maxillary sinus ostium and postoperative complication after sinus lifting. J Korean Assoc Oral Maxillofac Surg 2016; 42:278-283. [PMID: 27847736 PMCID: PMC5104870 DOI: 10.5125/jkaoms.2016.42.5.278] [Citation(s) in RCA: 14] [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: 06/23/2016] [Revised: 10/04/2016] [Accepted: 10/04/2016] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES The maxillary sinus mucosa is reported to recover to preoperative sterility after sinus floor elevation. However, when drainage of maxillary sinus is impaired, recovery can be delayed and maxillary sinusitis can occur. Therefore, in this study, we investigated the correlations between anatomic variants that can interrupt the ostium of the maxillary sinus and incidence of complication after sinus lifting. MATERIALS AND METHODS The subjects are 81 patients who underwent sinus lifting in Wonkwang University Dental Hospital (Iksan, Korea). Computed tomography (CT) images of the subjects were reviewed for presence of nasal septum deviation, anatomic variants of the middle turbinate, and Haller cells. Correlations between anatomic variations and occurrence of maxillary sinusitis were statistically analyzed. RESULTS Patients with anatomic variants of ostio-meatal units, such as deviated nasal septum, concha bullosa or paradoxical curvature of the middle turbinate, or Haller cells, showed a higher rate of complication. However, only presence of Haller cell showed statistically significant. CONCLUSION Before sinus lifting, CT images are recommended to detect anatomic variants of the ostio-meatal complex. If disadvantageous anatomic variants are detected, the use of nasal decongestants should be considered to reduce the risk of postoperative sinusitis.
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Affiliation(s)
- Jang Won Lee
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Ji Yong Yoo
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Seung Jae Paek
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Won-Jong Park
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Eun Joo Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Moon-Gi Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, College of Dentistry, Wonkwang University, Iksan, Korea
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Lee BD, Park MR, Kwon KH. Bisphosphonate-related osteonecrosis of the jaw in a multiple myeloma patient: A case report with characteristic radiographic features. Imaging Sci Dent 2015; 45:199-203. [PMID: 26389064 PMCID: PMC4574059 DOI: 10.5624/isd.2015.45.3.199] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 05/11/2015] [Accepted: 05/24/2015] [Indexed: 11/18/2022] Open
Abstract
A 59-year-old male who had suffered from multiple myeloma for nine years and had been administered bisphosphonates for seven years visited a dental hospital for pain relief due to extensive caries in his left maxillary molars. The molars were extracted, leaving an exposed wound for three months. The radiograph showed sequestra formation and irregular bone destruction in the left maxilla. Sudden pain and gingival swelling in the right mandibular molar area occurred six months later. The interseptum of the right lower second molar was observed to be necrotic during surgery. These findings coincided with the features of bisphosphonate-related osteonecrosis of the jaw (BRONJ). In this case, the long intravenous administration of bisphosphonates and tooth extraction were likely the etiologic factors of BRONJ in a patient with multiple myeloma; moreover, the bilateral occurrence of BRONJ is a characteristic feature.
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Affiliation(s)
- Byung-Do Lee
- Department of Oral and Maxillofacial Radiology and Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Moo-Rim Park
- Department of Internal Medicine, School of Medicine, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
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13
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Lee BD, Lee W, Kwon KH, Choi MK, Choi EJ, Yoon JH. Glandular odontogenic cyst mimicking ameloblastoma in a 78-year-old female: A case report. Imaging Sci Dent 2014; 44:249-52. [PMID: 25279347 PMCID: PMC4182361 DOI: 10.5624/isd.2014.44.3.249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 03/04/2014] [Accepted: 03/13/2014] [Indexed: 11/18/2022] Open
Abstract
Glandular odontogenic cyst (GOC) is a rare, potentially aggressive jaw lesion. The common radiographic features include a well-defined radiolucency with distinct borders, presenting a uni- or multilocular appearance. A cystic lesion in the posterior mandible of a 78-year-old female was incidentally found. Radiographs showed a unilocular lesion with a scalloped margin, external root resorption of the adjacent tooth, and cortical perforation. This lesion had changed from a small ovoid shape to a more expanded lesion in a period of four years. The small lesion showed unilocularity with a smooth margin and a well-defined border, but the expanded lesion produced cortical perforation and a lobulated margin. The provisional diagnosis was an ameloblastoma, whereas the histopathological examination revealed a GOC. This was a quite rare case, given that this radiographic change was observed in the posterior mandible of an elderly female. This case showed that a GOC can grow even in people in their seventies, changing from the unilocular form to an expanded, lobulated lesion. Here, we report a case of GOC with characteristic radiographic features.
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Affiliation(s)
- Byung-Do Lee
- Department of Oral and Maxillofacial Radiology and Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Wan Lee
- Department of Oral and Maxillofacial Radiology and Wonkwang Dental Research Institute, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Moon-Ki Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Eun-Joo Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Korea
| | - Jung-Hoon Yoon
- Department of Oral and Maxillofacial Pathology, College of Dentistry, Daejeon Dental Hospital, Wonkwang University, Daejeon, Korea
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Hwang JK, Chun HJ, Kim JM, Kwon KH, Kim YK, Kim SD, Park SC, Choi BS, Kim JI, Yang CW, Kim YS, Moon IS. Contrast-enhanced magnetic resonance angiography in the early period after kidney transplantation. Transplant Proc 2014; 45:2925-30. [PMID: 24157005 DOI: 10.1016/j.transproceed.2013.08.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Our objective was to evaluate the usefulness of three-dimensional (3-D) contrast-enhanced (CE) magnetic resonance angiography (MRA) to assess renal parenchyma, arterial inflow stenosis, and peritransplant fluid collections in the early period after kidney transplantation (KT). Between January 2010 and April 2011, we examined a consecutive series of 144 renal transplants using 3-D CE MRA at 14 days after KT. MRA showed parenchyma infarctions (n = 17, 11.8%), arterial inflow stenoses (n = 23, 16%), lymphoceles (n = 14, 9.7%), and hematomas (n = 6, 4.2%). The degree of renal transplant artery inflow stenosis was graded qualitatively based on diameter criterion; <50% = mild, 50% to 70% = moderate, and >70% = severe in 10 (6.9%), 5 (3.5%), and 8 (5.6%) subjects, respectively. The study recipients were divided into 3 groups according to the degree of renal artery inflow stenosis (group I: normal; group II: mild and moderate, <70%; group III: severe, >70%). Among group III patients who underwent digital subtraction angiography, 5 had percutaneous transluminal angioplasty or stenting performed after 1 month. Their mean resume creatinine levels at 1, 6, and 12 months after transplantation were not significantly different from those in the other groups (P = .391, .447, .110). The prevalence of graft loss (n = 2) was high in group III (P = .012), although the frequency of acute rejection episodes was not different among the groups (P = .890). The incidences of renal parenchyma infarction, peritransplant fluid collection and arterial inflow stenosis were unexpectedly high in the early period after KT. Thus, 3-D CE MRA provided a rapid global assessment of the renal parenchyma, transplant arterial system, and peritransplant fluid collection that can be helpful to detect or exclude many causes of renal transplant dysfunction.
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Affiliation(s)
- J K Hwang
- Division of Transplantation Surgery, Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Eun YG, Chung DH, Kim SW, Lee YC, Kim SK, Kwon KH. A Fas-associated via death domain promoter polymorphism (rs10898853, -16C/T) as a risk factor for papillary thyroid cancer. Eur Surg Res 2014; 52:1-7. [PMID: 24434721 DOI: 10.1159/000355878] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 09/23/2013] [Indexed: 01/07/2023]
Abstract
PURPOSE To determine whether a Fas-associated via death domain (FADD) promoter single-nucleotide polymorphism (SNP) is associated with susceptibility to papillary thyroid cancer (PTC) and clinicopathological features of PTC. METHODS To identify a possible association with PTC, 94 patients with PTC and 346 healthy controls were recruited. One promoter SNP (rs10898853, -16C/T) was analyzed by direct sequencing. Multiple logistic regression models (co-dominant, dominant, recessive, and log-additive models) were applied, and odds ratios (ORs), 95% confidence intervals (CIs), and p values were calculated. RESULTS The genotype of the promoter SNP (rs10898853) of FADD was found to be significantly associated with PTC in the co-dominant model 2 (T/T vs. C/C; p = 0.002, OR = 2.80, 95% CI = 1.39-5.65), the recessive model (p = 0.003, OR = 2.21, 95% CI = 1.31-3.71), and the log-additive model (p = 0.002, OR = 1.71, 95% CI = 1.20-2.44). Allele frequency analysis showed that the C allele of rs10898853 was significantly associated with an increased risk of PTC (p = 0.002, OR = 1.67, 95% CI = 1.21-2.32). CONCLUSIONS Our results suggest that the FADD promoter polymorphism is associated with susceptibility to PTC.
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Affiliation(s)
- Y G Eun
- Department of Otolaryngology - Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, South Korea
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Ki CY, Kwon KH, Kim SW, Min KS, Lee TU, Park DJ. Effects of injection of acetic acid and propionic acid for total phosphorus removal at high temperature in enhanced biological phosphorus removal process. Water Sci Technol 2014; 69:2023-2028. [PMID: 24845316 DOI: 10.2166/wst.2014.090] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In summer, wastewater treatment plant total phosphorus (TP) removal efficiency is low in South Korea. The reason is because of high temperatures or significant fluctuation of inflow characteristics caused by frequent rainfall. Hence, this study tried to raise TP removal efficiency by injecting fixed external carbon sources in real sewage. Polyphosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) compete to occupy microorganisms at high temperature. Propionate is known to restrain GAOs. Thus, acetate and propionate were chosen as the external carbon source in this study to find out the suitable volume and ratio of carbon source which ensured the dominance of PAOs. An external carbon source was supplied in the anaerobic reactor of the biological phosphorus removal process at high temperature (above 25 °C). TP removal efficiency was improved by injecting an external carbon source compared to that without an external carbon source. Also, it remained relatively stable when injecting an external carbon source, despite the variation in temperature. TP removal efficiency was the highest when injecting acetate and propionate in the proportion of 2:1 (total concentration as chemical oxygen demand (COD) is 12 mg/L in influent).
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Affiliation(s)
- C Y Ki
- Department of Environment Engineering, Kyungpook National University, Sangyeok 3-dong, Buk-gu, Daegu, South Korea 702-701 E-mail:
| | - K H Kwon
- Department of Environment Engineering, Kyungpook National University, Sangyeok 3-dong, Buk-gu, Daegu, South Korea 702-701 E-mail:
| | - S W Kim
- Department of Environment Engineering, Kyungpook National University, Sangyeok 3-dong, Buk-gu, Daegu, South Korea 702-701 E-mail:
| | - K S Min
- Department of Environment Engineering, Kyungpook National University, Sangyeok 3-dong, Buk-gu, Daegu, South Korea 702-701 E-mail:
| | - T U Lee
- Daegu Metropolitan City Environmental Installations Corporation, 499-4, Dusan-dong, Suseong-gu, Daegu, South Korea 706-801
| | - D J Park
- SSENG Co., LTD, 392-7, Deokpo 2-dong, Sasang-gu, Busan, South Korea 617-814
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Abstract
The aquaculture industry has grown dramatically, and plays an important role in the world's food supply chain. Antimicrobial resistance in bacteria associated with food animals receives much attention, and drug use in aquaculture is also an important issue. There are many differences between aquatic and terrestrial management systems, such as the methods used for administration of drugs. Unique problems are related to the application of drugs in aquatic environments. Residual drugs in fish products can affect people who consume them, and antimicrobials released into aquatic environments can select for resistant bacteria. Moreover, these antimicrobial-resistant bacteria, or their resistance genes, can be transferred to humans. To decrease the risks associated with the use of antimicrobials, various regulations have been developed. In addition, it is necessary to prevent bacterial diseases in aquatic animals by vaccination, to improve culture systems, and to monitor the amount of antimicrobial drugs used and the prevalence of antimicrobial-resistant bacteria.
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Affiliation(s)
- Y H Park
- Department of Microbiology, College of Veterinary Medicine, Seoul National University, Seoul, 151-742, Republic of Korea
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Abstract
BACKGROUND IL22RA1 (Interleukin 22 receptor-alpha 1), a member of the class II cytokine receptor family, mediates diverse biologic activities and appears to be important in pathogen defense, wound healing, and tissue reorganization. Polymorphisms in genes encoding inflammatory cytokines are associated with increased cancer risk. AIM The aim of this study was to evaluate the association between the single nucleotide polymorphisms (SNP) in the IL22 and IL22RA1 and papillary thyroid cancer (PTC), and to assess the relationship between the SNP in the IL22 and IL22RA1 and the clinical parameters of PTC. MATERIAL AND METHODS Study enrolled experimental group of 94 PTC patients and 213 controls. PTC patients were grouped and compared for clinical PTC parameters. One promoter SNP of IL22, -429C/T (rs2227485), and one SNP of IL22RA1, Arg518Gly (rs3795299) were analyzed using direct sequencing. Genetic data were analyzed using Helixtree, SNPAnalyzer Pro, SNPStats, and Haploview. RESULTS A SNP in IL22 (rs2227485) was significantly associated with PTC (codominant2 model [C/C vs T/T], odds ratio (OR) 2.39, 95% confidence interval (CI) 1.21-4.71, p=0.012; dominant model, OR 1.89, 95% CI 1.08-3.31, p=0.022). The allele T frequency of rs2227485 in IL22 was also associated with PTC (OR 1.59, 95% CI 1.13-2.25, p=0.009). According to clinical parameters, rs2227485 of IL22 was associated with number of cancers (dominant model, OR 3.03, 95% CI 1.02-9.01, p=0.035). By haplotype analysis, TG was associated with PTC (codominant model, OR 1.52, 95% CI 1.07-2.16, p=0.019; dominant model, OR 1.91, 95% CI 1.13- 3.24, p=0.015). Genotype and allele analysis of rs3795299 in IL22RA1 showed no significant differences between PTC patients and controls. CONCLUSION The rs2227485 SNP in IL22 might be associated with the risk and the multifocality of PTC.
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Affiliation(s)
- Y G Eun
- Department of Otolaryngology-Head and Neck Surgery, Kandong Sacred Heart Hospital, Hallym University School of Medicine, 445 Gil-Dong, Kangdong-Gu, Seoul 134-701, South Korea
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Kim EJ, Ki EJ, Cheon HM, Choi EJ, Kwon KH. 3-Dimensional analysis for class III malocclusion patients with facial asymmetry. J Korean Assoc Oral Maxillofac Surg 2013; 39:168-74. [PMID: 24471038 PMCID: PMC3858129 DOI: 10.5125/jkaoms.2013.39.4.168] [Citation(s) in RCA: 11] [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: 05/02/2013] [Revised: 08/12/2013] [Accepted: 08/12/2013] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVES The aim of this study is to investigate the correlation between 2-dimensional (2D) cephalometric measurement and 3-dimensional (3D) cone beam computed tomography (CBCT) measurement, and to evaluate the availability of 3D analysis for asymmetry patients. MATERIALS AND METHODS A total of Twenty-seven patients were evaluated for facial asymmetry by photograph and cephalometric radiograph, and CBCT. The 14 measurements values were evaluated and those for 2D and 3D were compared. The patients were classified into two groups. Patients in group 1 were evaluated for symmetry in the middle 1/3 of the face and asymmetry in the lower 1/3 of the face, and those in group 2 for asymmetry of both the middle and lower 1/3 of the face. RESULTS In group 1, significant differences were observed in nine values out of 14 values. Values included three from anteroposterior cephalometric radiograph measurement values (cant and both body height) and six from lateral cephalometric radiographs (both ramus length, both lateral ramal inclination, and both gonial angles). In group 2, comparison between 2D and 3D showed significant difference in 10 factors. Values included four from anteroposterior cephalometric radiograph measurement values (both maxillary height, both body height) and six from lateral cephalometric radiographs (both ramus length, both lateral ramal inclination, and both gonial angles). CONCLUSION Information from 2D analysis was inaccurate in several measurements. Therefore, in asymmetry patients, 3D analysis is useful in diagnosis of asymmetry.
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Affiliation(s)
- Eun-Ja Kim
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Iksan, Korea
| | - Eun-Jung Ki
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Iksan, Korea
| | - Hae-Myung Cheon
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Iksan, Korea
| | - Eun-Joo Choi
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Iksan, Korea. ; Wonkwang University Dental Research Institute, Iksan, Korea
| | - Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, Wonkwang University Dental Hospital, Iksan, Korea. ; Wonkwang University Dental Research Institute, Iksan, Korea
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Cho Y, Kim HS, Lee JY, Kwon KH, Shin YG. CPC-016 Analysis of Pharmacists’ Interventions on Inpatient Prescriptions and a Consideration of the Role of Hospital Pharmacists: Abstract CPC-016 Table 1. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.473] [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: 11/04/2022] Open
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Hong HP, Jung KH, Kim JH, Kwon KH, Lee CJ, Yun KN, Min NK. Percolated pore networks of oxygen plasma-activated multi-walled carbon nanotubes for fast response, high sensitivity capacitive humidity sensors. Nanotechnology 2013; 24:085501. [PMID: 23376938 DOI: 10.1088/0957-4484/24/8/085501] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report on the preparation of capacitive-type relative humidity sensors incorporating plasma-activated multi-wall carbon nanotube (p-MWCNT) electrodes and on their performance compared with existing commercial technology. Highly open porous conductive electrodes, which are almost impossible to obtain with conventional metal electrodes, are fabricated by spray-depositing MWCNT networks on a polyimide layer. Oxygen plasma activation of the MWCNTs is also explored to improve the water adsorption of the MWCNT films, by introducing oxygen-containing functional groups on the CNT surface. Polyimide humidity sensors with optimized p-MWCNT network electrodes exhibit exceptionally fast response times (1.5 for adsorption and 2 s for desorption) and high sensitivity (0.75 pF/% RH). These results may be partially due to their percolated pore structure being more accessible for water molecules, expending the diffusion of moisture to the polyimide sensing film, and partially due to the oxygenated surface of p-MWCNT films, allocating more locations for adsorption or attraction of water molecules to contribute to the sensitivity.
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Affiliation(s)
- H P Hong
- Department of Control and Instrumentation Engineering, Korea University, Jochiwon 339-700, Korea
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Kwon KH, Sim KB, Cha JW, Kim EJ, Lee JM. Clinical and scanning electron microscopic analysis of fractured dental implants: a retrospective clinical analysis. J Korean Assoc Oral Maxillofac Surg 2012. [DOI: 10.5125/jkaoms.2012.38.6.371] [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: 11/07/2022] Open
Affiliation(s)
- Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University, Iksan, Korea
- Wonkwang Dental Research Institute, Iksan, Korea
| | - Kyu-Bong Sim
- Wonkwang Dental Research Institute, Iksan, Korea
| | - Jae-Won Cha
- Wonkwang Dental Research Institute, Iksan, Korea
| | - Eun-Ja Kim
- Wonkwang Dental Research Institute, Iksan, Korea
| | - Jae-Min Lee
- Wonkwang Dental Research Institute, Iksan, Korea
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Kwon KH, Sim KB, Lee JM. Evaluation of the course of the inferior alveolar canal in the mandibular ramus using cone beam computed tomography. J Korean Assoc Oral Maxillofac Surg 2012. [DOI: 10.5125/jkaoms.2012.38.4.231] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Kyung-Hwan Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University, Wonkwang Dental Research Institute, Iksan, Korea
| | - Kyu-Bong Sim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University, Wonkwang Dental Research Institute, Iksan, Korea
| | - Jae-Min Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University, Wonkwang Dental Research Institute, Iksan, Korea
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Lee JY, Kwon KH, Kim SW, Min KS, Yun Z. Mathematical models for biomass in membrane-BNR process for wastewater treatment. Water Sci Technol 2010; 62:541-546. [PMID: 20706001 DOI: 10.2166/wst.2010.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The equation of biomass is related to the mass-balance equation of substrate. This equation of substrate is expressed according to a model using the Monod equation, which indicates some limits for calculating the amounts of VSS in the MBR process. Some degradation of biomass which is caused by long SRT might result in the generation of substrate based on COD. Research was conducted by lab-scale tests with two membrane-BNR (Biological Nutrients Removal) processes. These were composed of multi-reactors as anaerobic, anoxic, aerobic tank and oxygen exhauster. The aerobic tank was also divided into 3 reactors, which were oxic for nitrification, oxic-media containing fluidized sponge typed media for simultaneous nitrification and denitrification, and oxic-membrane for submerged membrane. This membrane-BNR process could remove most of the organics, suspended solids and nutrient substances like nitrogen thus satisfying the reuse guidelines issued by the Korean Ministry of Environment. The value measured of VSS (X(v)) through the experiment with SRT of 35 days was similar to the biomass using the conventional equation while the one with SRT of 60 days was close to the concentration of VSS calculated by a revised equation which considered the biomass degraded with long SRT.
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Affiliation(s)
- J Y Lee
- Department of Environmental Engineering, Kyungpook National University, Daegu, Korea.
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Oa SW, Choi E, Kim SW, Kwon KH, Min KS. Economical and technical efficiencies evaluation of full scale piggery wastewater treatment BNR plants. Water Sci Technol 2009; 59:2159-2165. [PMID: 19494455 DOI: 10.2166/wst.2009.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A method evaluating the economic efficiency of piggery waste treatment plant based on kinetics for nitrogen removal performances is executed in this study and five full scale plants were evaluated, monitored intensively during one year under steady-state conditions. The performance data from those surveyed plants were recalculated by first-order kinetic equation instead of the Monod's equation, and the nitrogen removal kinetics related with COD/TKN ratios. Two plants adapting two extreme strategies for pre treatment, 'excess phase separation', and 'minimum phase separation', were evaluated by the assessment of life cycle cost (LCC). Although the compared two plants use an opposite strategy to each other, similar evaluation results are deduced by nitrogen removal efficiencies and operational and construction costs. But the proportions of constituent elements are as different as two opposite strategies, so electrical and construction costs are inversely proportional to chemical costs and operational costs respectively.
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Affiliation(s)
- S W Oa
- Department of Railroad, Civil and Environmental Engineering, Woosong University, Daejeon 300-718, South Korea.
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Kim JY, Park H, Kwon KH, Park JY, Baek JY, Lee TS, Song HR, Park YD, Lee SH. A cell culturing system that integrates the cell loading function on a single platform and evaluation of the pulsatile pumping effect on cells. Biomed Microdevices 2008; 10:11-20. [PMID: 17624619 DOI: 10.1007/s10544-007-9105-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this paper, we present a novel microfluidic system with pulsatile cell storing, cell-delivering and cell culturing functions on a single PDMS platform. For this purpose, we have integrated two reservoirs, a pulsatile pumping system containing two soft check valves, which were fabricated by in situ photopolymerization, six switch valves, and three cell culture chambers all developed through a simple and rapid fabrication process. The sample volume delivered per stroke was 120 nl and the transported volume was linearly related to the pumping frequency. We have investigated the effect of the pulsatile pneumatic micropumping on the cells during transport. For this purpose, we pumped two types of cell suspensions, one containing human breast adenocarcinoma cells (MCF-7) and the other mesenchymal stem cells (hMSCs) derived from bone marrow. The effect of pulsatile pumping on both cell types was examined by short and long-term culture experiments. Our results showed that the characteristics of both cells were maintained; they were not damaged by the pumping system. Evaluations were carried out by morphological inspection, viability assay and immunophenotyping analysis. The delivered MCF-7 cells and hMSCs spread and proliferated onto the gelatin coated cell culture chamber. This total micro cell culture system can be applied to cell-based high throughput screening and for co-culture of different cells with different volume.
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Affiliation(s)
- J Y Kim
- Department of Biomedical Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-701, South Korea
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Kwon KH, Jeon YJ, Hwang HS, Lee KA, Kim YJ, Chung HW, Pang MG. A high yield of fetal nucleated red blood cells isolated using optimal osmolality and a double-density gradient system. Prenat Diagn 2008; 27:1245-50. [PMID: 17994634 DOI: 10.1002/pd.1888] [Citation(s) in RCA: 21] [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: 11/10/2022]
Abstract
OBJECTIVES To increase the yield of fetal nucleated red blood cells (NRBCs) from maternal blood using a discontinuous Percoll gradient and to determine the effects of osmolality on NRBC yield. METHODS Fetal NRBCs were isolated from combined umbilical cord blood and adult female blood, or from maternal blood using single or double Percoll gradients with different osmolalities. Magnetic activated cell sorting was used to enrich isolated NRBCs, and morphological differentiation was performed with Kleihauer-Betke stain. We also isolated fetal NRBCs from 25 10 mL samples of maternal blood and determined fetal sex by fluorescence in situ hybridization (FISH), using X-Y probes. RESULTS For single-density Percoll columns, the greatest number of NRBCs was isolated using 280 mOsm/kg H(2)O with 1.077 g/mL Percoll and 520 mOsm/kg H(2)O with 1.119 g/mL Percoll. Significantly more fetal NRBCs were isolated with double Percoll density gradients than with double-Histopaque gradients (p = 0.043). FISH analysis on NRBC in 25 cases correctly identified 15 male and 9 female euploid fetuses and one Trisomy 21 fetus. CONCLUSION The NRBC enrichment method we present requires less maternal blood and yields more NRBCs compared to previous methods.
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Affiliation(s)
- K H Kwon
- School of Public Health and Institute of Health and Environment, Seoul National University, Seoul, Korea
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Abstract
We report a case of peripheral ossifying fibroma arising from the anterior oral cavity in a 12-year-old boy. CT and MR scans showed a large exophytic soft tissue mass overlying the anterior hard palate and maxillary alveolar ridge. The tumour revealed peripheral calcification without adjacent bone changes.
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Affiliation(s)
- W-J Moon
- Department of Radiology, Konkuk University Hospital, Konkuk University School of Medicine, Gwangjin-gu, Seoul 143-914, Korea.
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Lee JH, Han SJ, Yun YH, Choi HC, Jung S, Cho SJ, Yu KH, Lee SM, Hwang SH, Song HK, Kwon KH, Lee BC. Posterior circulation ischemic stroke in Korean population. Eur J Neurol 2006; 13:742-8. [PMID: 16834704 DOI: 10.1111/j.1468-1331.2006.01274.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To understand the characteristics of posterior circulation ischemic stroke (PCS) in the Korean population better, we retrospectively reviewed the data from the Hallym Stroke Registry (HSR). We analyzed the demographic features, risk factors, stroke subtypes, lesion distributions and clinical outcomes of 591 consecutive patients with PCS, enrolled in HSR between January 1996 and July 2002. PCS was 39.8% of all ischemic strokes. Mean age of PCS patients was 63.4 years and 55.7% were men. Hypertension was the most common risk factor (69.9%). However, potential cardioembolic sources were found only in 11.0%. The most frequent stroke subtype was large artery disease (50.0%), followed by small vessel disease (33.8%). Only 5.2% of patients were classified as affected with cardioembolism. The most common location of infarcts was in the middle territory (36.5%), followed by distal (28.1%), proximal (19.0%), and multiple territories (16.4%). The hospital mortality rate (4.1%) and discharge outcome of PCS were comparable with those of the anterior circulation stroke (ACS). In conclusion, the etiology and lesion topography of PCS in the Korean population appeared to be different from those of the Caucasians.
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Affiliation(s)
- J-H Lee
- Department of Neurology, College of Medicine, Hallym University, Anyang City, South Korea
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Kim SI, Kwon KH, Huh KH, Lee JH, Kim YS, Park K. Experience with cyclosporine in adult living donor kidney transplantation: from 1984 to 2002 at yonsei university. Transplant Proc 2004; 36:186S-192S. [PMID: 15041334 DOI: 10.1016/j.transproceed.2004.01.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S I Kim
- Department of Surgery, Division of Transplantation, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
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Chang YW, Lee MH, Kwon KH, Kim JH, Park ST, Hwang JH, Goo DE, Choi DL, Lee DW. Magnetic resonance imaging of metaplastic carcinoma of the breast: sonographic and pathologic correlation. Acta Radiol 2004; 45:18-22. [PMID: 15164774 DOI: 10.1080/02841850410000773] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Metaplastic carcinoma of the breast is a rare disease. We describe the MRI findings with the correlative sonographic and pathologic features of two cases. On MRI, T2-weighted images demonstrate a relatively well-defined mass with high signal intensity cystic components. Dynamic enhancement subtraction images showed an early enhancing and delayed washout peripheral rim and non-enhancing internal components. A microlobulated, isoechogenic mass with cystic components was seen sonographically, and was histopathology related to necrosis and cystic degeneration. Although these features are not unique, metaplastic carcinoma should be included in the differential diagnosis for breast masses.
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Affiliation(s)
- Y W Chang
- Department of Radiology, Soonchunhyang University Hospital, Seoul, Korea.
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Abstract
Oxidative stress has been shown to play pivotal roles in the onset of inflammatory bowel disease. We evaluated the effects of a dietary anti-oxidant, Antioxidant Biofactor (AOB), a processed grain food, on dextran sulfate sodium (DSS)-induced colitis in mice. Female ICR mice were fed a diet containing 0.1% or 1% AOB for 2 weeks, during which they were given 5% DSS in drinking water for the latter 1 week to induce colitis. A diet containing 1% AOB, but not that with 0.1% AOB, attenuated DSS-induced body weight loss and colon shortening (each, P < 0.05), and dramatically improved colitis histologic scores. In addition, DSS-induced increases in colonic mucosal IL-1beta, but not TNF-alpha, protein levels were significantly abrogated in 1% AOB-fed mice (P < 0.05). Further, 1% dietary AOB abolished the expression of IL-1beta mRNA levels in colonic mucosa (P < 0.01). Our results suggest that AOB is effective for the prevention of DSS-induced colitis in mice.
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Affiliation(s)
- K H Kwon
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Abstract
A 54-year-old woman with diabetes mellitus was hospitalized with generalized edema and weakness. She was also found to have hypertension, hypokalemia and metabolic alkalosis. Detailed examination showed subnormal plasma renin activity and plasma aldosterone concentration. Adrenal CT scanning revealed no adrenal tumor. A successful treatment with amiloride established the diagnosis of Liddle's syndrome for the patient. Liddle's syndrome, a rare hereditary disease usually found in young patients, should be considered in the differential diagnosis of hypertension even in elderly individuals.
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Affiliation(s)
- J Oh
- Department of Internal Medicine, CHA General Hospital, College of Medicine, Pochon CHA Medical University, Sungnam, Korea
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Kim MJ, Kwon KH, Lee SW. Gastroesophageal reflux disease in CAPD patients. Adv Perit Dial 2000; 14:98-101. [PMID: 10649702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Upper gastrointestinal (GI) symptoms are frequently observed in continuous ambulatory peritoneal dialysis (CAPD) patients. We conducted esophageal manometry and 24-hour esophageal pH monitoring in 4 CAPD patients (Group I) who had upper GI symptoms such as nausea and vomiting and compared them with 9 patients (Group II) who did not. The mean age in Group I was 48.5 +/- 13.7 years, and the male-to-female ratio was 1:3. One patient was diabetic. There were no significant differences in clinical and biochemical data between the two groups. Comparing the results of esophageal manometry, supine lower esophageal sphincter pressure (LESP) at 2000 mL of infused dialysate was significantly lower in Group I than in Group II (23.2 +/- 4.4 vs 31.2 7.1 mmHg, P < 0.05), but supine LESPs at empty state and sitting LESPs were not different. Group I had a significantly higher total number of reflux episodes (89.0 +/- 16.5 vs 26.5 +/- 19.4, P < 0.05), number of reflux episodes longer than 5 minutes (2.3 +/- 2.6 vs 0.3 +/- 0.5, P < 0.05), total time of pH < 4.0 (75.5 +/- 55.5 vs 11.0 +/- 6.8, P < 0.05), and total reflux score (19.7 +/- 10.2 vs 4.2 +/- 2.3, P < 0.05) in 24-hour esophageal pH monitoring. Three of 4 Group I patients met the criteria for abnormal gastroesophageal reflux set by the DeMeester scoring system. CAPD patients with upper GI symptoms such as nausea, vomiting, and epigastric discomfort should be evaluated for gastroesophageal reflux disease with esophageal manometry and pH monitoring.
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Affiliation(s)
- M J Kim
- Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea
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Abstract
We report 8 cases of lateral plantar neuropathy (LPN). All had sensory impairment over the territory of the lateral plantar nerve. Near-nerve needle sensory nerve conduction study (NCS) of the plantar nerves showed abnormality confined to the lateral plantar nerve, confirming LPN. The most common cause for LPN was trauma and the most common site of injury was at the passage of the lateral plantar nerve through the abductor tunnel at the instep of the foot.
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Affiliation(s)
- S J Oh
- Department of Neurology, The University of Alabama at Birmingham, UAB Station, Birmingham, Alabama 35294, USA
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Kim JM, Song YG, Oho YC, Park HC, Kwon KH, Kim E, Lee SH, Kim KH. Antibodies to human T-cell lymphotropic virus type I (HTLV-I) by particle agglutination (PA) test in Korean blood donors. Yonsei Med J 1999; 40:173-7. [PMID: 10333722 DOI: 10.3349/ymj.1999.40.2.173] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
HTLV-I infection is a recently recognized disease entity that is common in some tropical and subtropical areas, including the southwestern district of Japan. Despite the geographical proximity and frequent cultural exchanges between Korea and Japan, it is understood that Korea is not an endemic area and HTLV-I-associated illnesses are very rare in Korea. This study was designed to evaluate the positive rate of anti-HTLV-I antibodies in Korean blood donors and its regional distribution. Sera were obtained from blood donors from various districts around Korea. Anti-HTLV-I antibodies were detected by using the microtiter particle agglutination test employing an indirect agglutination technique. A total of 9,281 donors were tested and 12 donors (0.13%) were positive for anti-HTLV-I antibodies, 10 (0.11%) out of 8,845 males and 2 (0.46%) out of 436 females, with relative female predominance. A relatively high incidence of anti-HTLV-I positive donors was observed in Cheju Island (0.80%), Kyungnam (0.31%), and Chonnam (0.15%). In conclusion, the positive rate of anti-HTLV-I antibodies seemed to be very low in Korea, but the highest positive rate of anti-HTLV-I antibodies was noticed on Cheju Island, warranting further research for confirmation.
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Affiliation(s)
- J M Kim
- Department of Internal Medicine, Yonsei University College of Medicine.
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Lee SW, Kwon KH, Kim MJ. Comparison of lipid profiles in long-term CAPD and hemodialysis patients. Perit Dial Int 1998; 18:435-7. [PMID: 10505569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Affiliation(s)
- S W Lee
- Department of Internal Medicine, Inha University College of Medicine, Inchon, Korea
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Affiliation(s)
- S J Oh
- Department of Neurology, University of Alabama at Birmingham 35294, USA
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Abstract
Homocystinuria is a rare, inherited metabolic disease frequently associated with severe multisystemic involvement such as dislocated lenses, skeletal deformities, mental retardation, and premature vascular occlusion. Arterial and venous thromboembolic events present frequent and life-threatening complications in homocystinuric patients. It has been suggested that mild homocystinemia would be a risk factor for vascular disease.
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Affiliation(s)
- H S Hong
- Department of Radiology, College of Medicine, Soonchunhyang University Hospital, Hannam Dong 657 Yongsan Gu, Seoul 140-743, Korea
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Abstract
Amiodarone is an iodinated benzofuran derivative that represents a new and extremely effective therapy for certain life-threatening refractory cardiac arrgythmia. There are numerous side effects associated with amiodarone therapy, including corneal microdeposits. Skin reactions and others. Pulmonary toxicity, however, represents the most serious adverse reaction limiting the clinical effecacy of this antidysrhythmic drug. Recently, we experienced a case of amiodarone-induced pulmonary toxicity confirmed by open lung biopsy with light-and electron-microscopy. So, we report a case of amiodarone-induced pulmonary toxicity with a literature review.
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Affiliation(s)
- K H Kwon
- Department of Internal Medicine, Anatomical Pathology, College of Medicine, Soon Chun Hy ang University, Seoul, Korea
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Abstract
Papillomas are rare tumors of the respiratory tract, which are usually considered benign. We studied a male patient with adult onset of squamous papillomatosis involving both the trachea and the bronchi, with malignant degeneration. When we obtained specimens bronchoscopically, only the bronchial lesions showed carcinomatous changes. Thoracotomy demonstrated carcinoma in the tracheal lesion as well. We conclude that transbronchoscopic biopsy may be inadequate in the evaluation of papillomatosis.
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Abstract
Remote myocardial infarction in a 60-year-old, blind diabetic man, was complicated by suppuration within the old fibrotic area by a group F streptococcus. Osteomyelitis of the fifth (right) metatarsal bone served as the primary focus. A review of the literature uncovered no findings which could help to predict the onset of abscess formation within a myocardial infarction. Although this complication occurs rarely, the entity should be kept in mind in patients with infarcts and a remote source of infection.
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