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Kim H, Lee DW, Hwang JK. Curcuma xanthorrhiza extract and xanthorrhizol ameliorate cancer-induced adipose wasting in CT26-bearing mice by regulating lipid metabolism and adipose tissue browning. Integr Med Res 2024; 13:101020. [PMID: 38298864 PMCID: PMC10826318 DOI: 10.1016/j.imr.2023.101020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 12/03/2023] [Accepted: 12/21/2023] [Indexed: 02/02/2024] Open
Abstract
Background Cancer cachexia-characterized by anorexia, body weight loss, skeletal muscle atrophy, and fat loss-affects nearly 80% of cancer patients and accounts for 20% of cancer deaths. Curcuma xanthorrhiza, known as Java turmeric, and its active compound xanthorrhizol (XAN) exhibit anticancer, anti-inflammatory, and antioxidant properties. However, the ameliorative effects of C. xanthorrhiza extract (CXE) and XAN on cancer-associated adipose atrophy remain unexplored. This study aimed to evaluate the therapeutic effects of CXE and XAN on cancer cachexia-induced adipose tissue wasting in CT26 tumor-bearing mice. Methods CT26 cells were injected subcutaneously into the right flank of BALB/c mice to establish a cancer cachexia model. To evaluate the inhibitory effects of CXE and XAN on cancer cachexia, 50 and 100 mg/kg CXE and 15 mg/kg XAN were administered orally every day for 1 week. Results CXE and XAN administration significantly attenuated the loss of body weight and epidydimal fat mass by cancer cachexia. In epididymal adipose tissues, administration of CXE or XAN inhibited white adipose tissue browning by repressing expression of the thermogenic genes. Simultaneously, CXE or XAN attenuated fat catabolism through the downregulation of lipolytic genes. The administration of CXE or XAN induced the expression of genes associated with adipogenesis and lipogenesis-related genes. Moreover, CXE or XAN treatment was associated with maintaining metabolic homeostasis; regulating the expression of adipokines and AMP-activated protein kinase (AMPK). Conclusions CXE and XAN mitigate cancer-induced adipose tissue atrophy, primarily by modulating lipid metabolism and WAT browning, indicating their therapeutic potential for cachectic cancer patients.
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Affiliation(s)
- Haeun Kim
- Graduate School of Bioindustrial Engineering, Yonsei University, Seoul, Republic of Korea
| | - Dong-Woo Lee
- Graduate School of Bioindustrial Engineering, Yonsei University, Seoul, Republic of Korea
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Jae-Kwan Hwang
- Graduate School of Bioindustrial Engineering, Yonsei University, Seoul, Republic of Korea
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Park J, Kim DS, Huh H, Cho WG, Kim H, Lee DW. In Vivo 3-Dimensional Dynamic Evaluation of Shoulder Kinematics After the Latarjet Procedure: Comparison With the Contralateral Healthy Shoulder. Orthop J Sports Med 2024; 12:23259671241226909. [PMID: 38486807 PMCID: PMC10938626 DOI: 10.1177/23259671241226909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 08/18/2023] [Indexed: 03/17/2024] Open
Abstract
Background Researchers have attempted to understand the underlying mechanism of the Latarjet procedure; however, its effects on shoulder kinematics have not been well studied. Purpose/Hypothesis The purpose was to analyze shoulder kinematics after the Latarjet procedure. It was hypothesized that the nonanatomic transfer of the coracoid process during the procedure would affect normal shoulder kinematics. Study Design Controlled laboratory study. Methods The study included 10 patients (age range, 20-52 years) who underwent the modified Latarjet procedure between June 2016 and November 2021. Computed tomography and fluoroscopy were conducted on both shoulder joints of all patients, and 3-dimensional models were reconstructed. The 3-dimensional coordinates were encoded on the reconstructed models, and shoulder kinematics were analyzed through a 3-dimensional-2-dimensional model-image registration technique. Scapular rotation parameters (scapular upward rotation, posterior tilt, external rotation, and scapulohumeral rhythm) were compared between the Latarjet and the nonsurgical contralateral sides during humeral abduction, as was anteroposterior (AP) translation relative to the glenoid center during active humeral external rotation. Results The Latarjet side displayed significantly higher values of scapular upward rotation at higher degrees of humeral elevation (130°, 140°, and 150°) compared with the nonsurgical side (P = .027). Posterior tilt, external rotation, and scapulohumeral rhythm were not significantly different between sides. AP translation at maximal humeral rotation was not significantly different between sides (Latarjet, -0.06 ± 5.73 mm vs nonsurgical, 5.33 ± 1.60 mm; P = .28). Interestingly, on the Latarjet side, AP translation increased until 40° of humeral rotation (4.27 ± 4.64 mm) but began to decrease from 50° of humeral rotation. Conclusion The Latarjet side demonstrated significant changes in scapular upward rotation during higher degrees of humeral elevation compared with the contralateral shoulder. Posterior movement of the humeral head at >50° of humeral rotation could be the desired effect of anterior stabilization; however, researchers should evaluate long-term complications such as osteoarthritis. Clinical Relevance Analysis of shoulder kinematics after the Latarjet procedure could provide information regarding long-term outcomes and whether the procedure would affect the daily activities of patients.
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Affiliation(s)
- Jisu Park
- Department of Orthopedic Surgery, Wonju College of Medicine, Yonsei University, Republic of Korea
| | - Doo Sup Kim
- Department of Orthopedic Surgery, Wonju College of Medicine, Yonsei University, Republic of Korea
| | - Hyungkyu Huh
- Daegu-Gyeongbuk Medical Innovation Foundation, Dae-gu, Republic of Korea
| | - Won Gil Cho
- Department of Anatomy, Wonju College of Medicine, Yonsei University, Gangwon-do, Republic of Korea
| | - HyunWoo Kim
- Department of Orthopedic Surgery, Wonju College of Medicine, Yonsei University, Republic of Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil General Hospital, Seoul, Republic of Korea
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Kim H, Lee J, Chang SM, Hong JP, Lee DW, Hahm BJ, Cho SJ, Park JI, Jeon HJ, Seong SJ, Park JE, Kim BS. Prevalence of lifetime psychiatric disorders and suicidality in adults with subthreshold posttraumatic stress disorder: A population-based nationwide study in Korea. Psychol Trauma 2024; 16:107-115. [PMID: 34855437 DOI: 10.1037/tra0001185] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND Subthreshold posttraumatic stress disorder (PTSD) is a chronic condition, and despite its clinical importance, few studies have been conducted. We investigated the relationship of subthreshold PTSD with various psychiatric disorders and suicidality in a South Korean general population. METHOD A total of 5,102 respondents, aged at least 18 years, completed face-to-face interviews using the Korean version of the Composite International Diagnostic Interview and questionnaires for lifetime suicidal ideation, plans, and attempts. Subthreshold PTSD was defined as at least one symptom in each of the three symptom clusters (Criteria B, C, and D) and a symptom duration of ≥ 1 month (Criterion E). RESULTS The lifetime prevalence of subthreshold PTSD (2.5%) was higher than that of PTSD (1.5%). After adjusting for sociodemographic factors, subthreshold PTSD was significantly associated with nicotine use disorders, major depressive disorder, obsessive-compulsive disorder (OCD), generalized anxiety disorder, and specific phobia. Among psychiatric disorders, the odds ratio for OCD was notably high. Subthreshold PTSD was associated with increased suicidal ideation (adjusted OR [AOR] = 2.90, 95% CI [1.98, 4.26]), suicidal plans (AOR = 3.58, [1.86, 6.89]), and suicide attempts (AOR = 3.93, [1.93, 8.01]) after adjusting for sociodemographic factors. When adjusted for sociodemographic factors and psychiatric disorders, suicidal ideation (AOR = 2.04, [1.34, 3.11]) remained statistically significant. CONCLUSION This study found that subthreshold PTSD was associated with various psychiatric disorders and suicidality. Increased attention to the mental health of individuals with subthreshold PTSD is necessary. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
- Hyerim Kim
- Department of Psychiatry, Kyungpook National University Hospital
| | - Jimin Lee
- Department of Psychiatry, Kyungpook National University Hospital
| | - Sung Man Chang
- Department of Psychiatry, Kyungpook National University Hospital
| | - Jin Pyo Hong
- Department of Psychiatry, School of Medicine, Sungkyunkwan University
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University, College of Medicine
| | - Bong-Jin Hahm
- Department of Psychiatry, Seoul National University, College of Medicine
| | | | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University School of Medicine
| | - Hong Jin Jeon
- Department of Psychiatry, School of Medicine, Sungkyunkwan University
| | - Su Jeong Seong
- Department of Psychiatry, Kangdong Sacred Heart Hospital
| | - Jee Eun Park
- Department of Psychiatry, Seoul National University College of Medicine
| | - Byung-Soo Kim
- Department of Psychiatry, School of Medicine, Kyungpook National University
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Rintarhat P, Cho YJ, Koh H, Park S, Lee EJ, Lim H, Noh J, Lee DW, Jung WH. Assessment of DNA extraction methods for human gut mycobiome analysis. R Soc Open Sci 2024; 11:231129. [PMID: 38204788 PMCID: PMC10776226 DOI: 10.1098/rsos.231129] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Abstract
The gut mycobiome plays an important role in the health and disease of the human gut, but its exact function is still under investigation. While there is a wealth of information available on the bacterial community of the human gut microbiome, research on the fungal community is still relatively limited. In particular, technical methodologies for mycobiome analysis, especially the DNA extraction method for human faecal samples, varied in different studies. In the current study, two commercial kits commonly used in DNA extraction, the QIAamp® Fast DNA Stool Mini Kit and DNeasy PowerSoil Pro Kit, and one manual method, the International Human Microbiome Standards Protocol Q, were compared. Furthermore, the effectiveness of two different bead-beating machines, the Mini-Beadbeater-16 and FastPrep-24TM 5G, was compared in parallel. A mock fungal community with a known composition of fungal strains was also generated and included to compare different DNA extraction methods. Our results suggested that the method using the DNeasy PowerSoil Pro Kit and Mini-Beadbeater-16 provides the best results to extract DNA from human faecal samples. Based on our data, we propose a standard operating procedure for DNA extraction from human faecal samples for mycobiome analysis.
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Affiliation(s)
- Piyapat Rintarhat
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Korea
| | - Yong-Joon Cho
- Department of Molecular Bioscience, Kangwon National University, Chuncheon 24341, Korea
| | - Hong Koh
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sowon Park
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Joo Lee
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyeji Lim
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jihye Noh
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, Korea
| | - Won Hee Jung
- Department of Systems Biotechnology, Chung-Ang University, Anseong 17546, Korea
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Kong HJ, Kang DH, Ahn TS, Kim KS, Kim TW, Lee SH, Lee DW, Ryu JS, Beak MJ. The Role of CPNE7 (Copine-7) in Colorectal Cancer Prognosis and Metastasis. Int J Mol Sci 2023; 24:16704. [PMID: 38069026 PMCID: PMC10706690 DOI: 10.3390/ijms242316704] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/02/2023] [Accepted: 11/05/2023] [Indexed: 12/18/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common and deadly cancers in the world. However, no effective treatment for the disease has yet been found. For this reason, several studies are being carried out on the treatment of CRC. Currently, there is limited understanding of the role of CPNE7 (copine-7) in CRC progression and metastasis. The results of this study show that CPNE7 exerts an oncogenic effect in CRC. First, CPNE7 was shown to be significantly up-regulated in CRC patient tissues and CRC cell lines compared to normal tissues according to IHC staining, qRT-PCR, and western blotting. Next, this study used both systems of siRNA and shRNA to suppress CPNE7 gene expression to check the CPNE7 mechanism in CRC. The suppressed CPNE7 significantly inhibited the growth of CRC cells in in vitro experiments, including migration, invasion, and semisolid agar colony-forming assay. Moreover, the modified expression of CPNE7 led to a decrease in the levels of genes associated with epithelial-mesenchymal transition (EMT). The epithelial genes E-cadherin (CDH1) and Collagen A1 were upregulated, and the levels of mesenchymal genes such as N-cadherin (CDH2), ZEB1, ZEB2, and SNAIL (SNAL1) were downregulated after CPNE7 inhibition. This study suggests that CPNE7 may serve as a potential diagnostic biomarker for CRC patients.
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Affiliation(s)
- Hye-Jeong Kong
- Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea; (H.-J.K.); (K.-S.K.); (T.-W.K.); (D.-W.L.); (J.-S.R.)
| | - Dong-Hyun Kang
- Department of Surgery, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea; (D.-H.K.); (T.-S.A.); (S.-H.L.)
| | - Tae-Sung Ahn
- Department of Surgery, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea; (D.-H.K.); (T.-S.A.); (S.-H.L.)
| | - Kwang-Seock Kim
- Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea; (H.-J.K.); (K.-S.K.); (T.-W.K.); (D.-W.L.); (J.-S.R.)
| | - Tae-Wan Kim
- Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea; (H.-J.K.); (K.-S.K.); (T.-W.K.); (D.-W.L.); (J.-S.R.)
| | - Soo-Hyeon Lee
- Department of Surgery, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea; (D.-H.K.); (T.-S.A.); (S.-H.L.)
| | - Dong-Woo Lee
- Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea; (H.-J.K.); (K.-S.K.); (T.-W.K.); (D.-W.L.); (J.-S.R.)
| | - Jae-Sung Ryu
- Department of Medical Life Science, Soonchunhyang University, Asan 31538, Republic of Korea; (H.-J.K.); (K.-S.K.); (T.-W.K.); (D.-W.L.); (J.-S.R.)
| | - Moo-Jun Beak
- Department of Surgery, Soonchunhyang University College of Medicine, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea; (D.-H.K.); (T.-S.A.); (S.-H.L.)
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Kim KS, Lee GH, Bak HR, Park YM, Lee SH, Hong SJ, Lee DW. Complete genome assembly of Enterococcus faecalis strain HL1, isolated from an infant fecal sample. Microbiol Resour Announc 2023; 12:e0055823. [PMID: 37905826 PMCID: PMC10652978 DOI: 10.1128/mra.00558-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/21/2023] [Indexed: 11/02/2023] Open
Abstract
We present the complete genome sequence of Enterococcus faecalis strain HL1, isolated from infant feces. E. faecalis gains significant attention for its therapeutic potential. The genome of E. faecalis HL1 consists of a 2.7 Mb circular chromosome with no plasmids, and it contains a total of 2,546 predicted coding genes.
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Affiliation(s)
- Kyoung Su Kim
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Gun-Hyeong Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Hyun Ryul Bak
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Yoon Mee Park
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Seung Hwa Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Kim SJ, Youn UJ, Kang P, Kim TK, Kim IC, Han SJ, Lee DW, Yim JH. A novel exopolysaccharide (p-CY01) from the Antarctic bacterium Pseudoalteromonas sp. strain CY01 cryopreserves human red blood cells. Biomater Sci 2023; 11:7146-7157. [PMID: 37718649 DOI: 10.1039/d3bm00917c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Cryopreservation of human red blood cells (RBCs) is vital for regenerative medicine and organ transplantation, but current cryoprotectants (CPAs) like glycerol and hydroxyethyl starch (HES) have limitations. Glycerol requires post-thaw washing due to cell membrane penetration, while HES causes high viscosity. To address these issues, we explored exopolysaccharides (EPS) from Antarctic Pseudoalteromonas sp. strain CY01 as a non-penetrating CPA for RBC cryopreservation. The EPS, p-CY01, consisted mainly of repeating (1-4) glucose and (1-6) galactose linkages with a molecular mass of 1.1 × 107 Da. Through mild acid hydrolysis, we obtained low molecular weight p-CY01 (p-CY01 LM) with a molecular weight of 2.7 × 105 Da, offering reduced viscosity, improved solubility, and cryoprotective properties. Notably, combining low concentrations of penetrating CPAs (>1% glycerol and dimethyl sulfoxide) with 2.5% (w/v) p-CY01 LM demonstrated significant cryoprotective effects. These findings highlight the potential of p-CY01 LM as a highly effective CPA for human RBC cryopreservation, replacing HES and glycerol and enabling the long-term storage of biological materials.
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Affiliation(s)
- Sung Jin Kim
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
- Graduate Program in Biomaterials Science & Engineering, Yonsei University, Seoul 03722, South Korea
| | - Ui Joung Youn
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
| | - Pilsung Kang
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
| | - Tai Kyoung Kim
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
| | - Il-Chan Kim
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
| | - Se Jong Han
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
| | - Dong-Woo Lee
- Graduate Program in Biomaterials Science & Engineering, Yonsei University, Seoul 03722, South Korea
- Department of Biotechnology, Yonsei University, Seoul 03722, South Korea.
| | - Joung Han Yim
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea.
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Kim J, Park YM, Lee SY, Kim BS, Lee YK, Lee DW, Nam MH, Hong SJ. Metabolomics revealed alterations in serum lipid metabolite levels in childhood atopic dermatitis. Pediatr Allergy Immunol 2023; 34:e14021. [PMID: 37747754 DOI: 10.1111/pai.14021] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023]
Affiliation(s)
- Jinwoo Kim
- Seoul Center, Korea Basic Science Institute (KBSI), Seoul, South Korea
| | - Yoon Mee Park
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, South Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Bong-Soo Kim
- Department of Life Science, Hallym University, Chuncheon, South Korea
| | - Yun Kyung Lee
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science, Soonchunhyang University, Cheonan, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Myung Hee Nam
- Seoul Center, Korea Basic Science Institute (KBSI), Seoul, South Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Kim SJ, Lee DW, Lee C, Kim JH. Mycobacterium avium complex prosthetic joint infection: A systematic review of the literature and pooled analysis. J Orthop Surg (Hong Kong) 2023; 31:10225536231199392. [PMID: 37878458 DOI: 10.1177/10225536231199392] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Mycobacterium avium complex (MAC) prosthetic joint infection (PJI) has been rarely reported. METHODS This study aimed to investigate the epidemiology and outcomes of MAC PJI. A systematic review of the literature regarding the MAC infection following total joint arthroplasty including hip and knee joint was performed. Multiple databases were searched for published English-written articles up to May 2023. Studies that reported cases of PJI by MAC were reviewed. RESULTS A total of 17 patients were identified and analyzed from 11 published studies. All patients presented with joint symptom of pain or swelling prior to the diagnosis and MAC was confirmed by culture. The most of the patients (16/17 patients, 94.1%) were noted to have underlying medical condition(s) that might have affected immunity. Treatment consisted of anti-MAC medication therapy only in two patients and anti-MAC medication therapy plus surgery in 15 patients. Among the patients who underwent surgery, 14 patients (82.3%) had removal of the prosthesis including seven patients who had two-stage surgery to have reimplantation of the prosthesis. No relapse of MAC infection was reported despite of one case of relapse of infection caused by different pyogenic bacteria. The rate of overall mortality was 29.4%, however, identified attributable mortality due to MAC infection was low (5.9%). CONCLUSION PJI by MAC is a rare disease. However, MAC needs to be considered in the differential diagnosis in immunocompromised patients presenting with symptoms of PJI. Two-stage exchange arthroplasty may result in successful treatment outcomes without higher risks of relapse of infection if undertaken in association with appropriate active anti-MAC antibiotic therapy.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, Hanil General Hospital, Seoul, Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil General Hospital, Seoul, Korea
| | - Chaeryoung Lee
- Division of Infectious Diseases, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Jong Hun Kim
- Division of Infectious Diseases, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
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Lee DW, Lee HS, Kim SG, Kim KJ, Jung SJ. The rocky road to freedom: number of countries transited during defection and risk of metabolic syndrome among North Korean Refugees in South Korea. Public Health 2023; 221:208-215. [PMID: 37490839 DOI: 10.1016/j.puhe.2023.06.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 05/22/2023] [Accepted: 06/15/2023] [Indexed: 07/27/2023]
Abstract
OBJECTIVES North Korean Refugees (NKRs) undergo defection, and this has been shown to impact their current health status in South Korea. However, little is understood about how the defection process is related to metabolic syndrome (MetS). This study regarded the defection process to be a quasi-measurement of traumatic experience and investigated whether defection was a risk factor for MetS among NKRs living in South Korea. STUDY DESIGN This cross-sectional study obtained data from the Korea University Anam Hospital in Seoul. NKRs (N = 847) voluntarily completed questionnaires and underwent at least one medical examination between October 2008 and July 2021. METHODS Multivariable logistic regression models were used to evaluate whether the number of countries transited by NKRs was associated with MetS by controlling for covariates. RESULTS The prevalence of MetS among male and female NKRs in South Korea was 12.3% and 13.3%, respectively. The highest prevalence of MetS (33.4%) was among NKRs who had transited two countries. The number of months in transit countries (mean: 49.9 ± 51.7) and period of residence in South Korea (mean: 40.9 ± 40.9 months) were also considered. NKRs who transited three countries had a higher probability of MetS (odds ratio [OR] 2.660, 95% confidence interval [CI] 1.161-6.097) than those who travelled directly to South Korea. NKRs who transited three countries and had only resided in South Korea for a short period had a higher probability of MetS (OR 3.424, 95% CI 1.149-10.208) than those who have lived in South Korea for a longer period. CONCLUSIONS Considering the social vulnerability of NKRs and consequential health problems, there is an urgent need for appropriate support from the government and society.
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Affiliation(s)
- D W Lee
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea; Institute of Health Services Research, Yonsei University, Seoul, 03722, Republic of Korea
| | - H S Lee
- Research Investment for Global Health Technology Fund Foundation, Seoul, 03145, Republic of Korea
| | - S G Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, 02841, Republic of Korea; Department of Healthcare and Medicine for Unified Korea, Korea University College of Medicine, Seoul, 02842, Republic of Korea
| | - K J Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, 02841, Republic of Korea.
| | - S J Jung
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea; Department of Public Health, Graduate School, Yonsei University, Seoul, 03722, Republic of Korea; Center for Global Health, Massachusetts General Hospital, Boston, MA, 02114, USA; Harvard Center for Population and Developmental Studies, Cambridge, MA, 02138, USA.
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Ganbat D, Lee DW, Kim SB, Lee YJ, Nam G, Chi WJ, Lee BH, Jung YJ, Lee JS, Lee SJ. Description of Salinimicrobium tongyeongense sp. nov., isolated from seawater. Int J Syst Evol Microbiol 2023; 73. [PMID: 37436803 DOI: 10.1099/ijsem.0.005955] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023] Open
Abstract
A Gram-stain-negative, non-motile by gliding and moderately halophilic rod-shaped bacterium HN-2-9-2T was isolated from seawater in Tongyeong, Republic of Korea. The strain grew at concentrations of 0.5‒7 % (w/v) NaCl, at pH 5.5‒8.5 and in a temperature range of 18‒45 °C. HN-2-9-2T shared the highest 16S rRNA gene sequence percentage with Salinimicrobium xinjiangense BH206T (98.2 %). The average nucleotide identity (ANI), average amino acid identity (AAI) and digital DNA-DNA hybridisation (dDDH) values between HN-2-9-2T and the S. xinjiangense BH206T were 76.0 %, 81.9 % and 19.7 %, respectively. The genome comprised 3 509 958 bp with a DNA G+C content of 43.0%. HN-2-9-2T contained MK-6 as the sole menaquinone. The predominant fatty acids were iso-C15 : 0, anteiso-C15 : 0, iso-C17 : 0 3-OH, iso-C16 : 0, iso-C15 : 1G and summed feature 9, comprising iso-C17 : 1ω6c/C16 : 1 10-methyl. The polar lipids contained phosphatidylethanolamine, one unidentified phospholipid, two unidentified aminolipids, an unidentified glycolipid and six unidentified lipids. The polyphasic taxonomic properties indicate that the strain represents a novel species within the genus Salinimicrobium, for which the name Salinimicrobium tongyeongense sp. nov. is proposed. The type strain is HN-2-9-2T (=KCTC 82934T=NBRC 115920T).
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Affiliation(s)
- Dariimaa Ganbat
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan 46958, Republic of Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul 03722, Republic of Korea
| | - Seong-Bo Kim
- Bio-Living Engineering, Global Leaders College, Yonsei University, Seoul 03722, Republic of Korea
| | - Yong-Jik Lee
- Department of Bio-Cosmetics, Seowon University, Chung-Ju 28674, Republic of Korea
| | - Gaewon Nam
- Department of Bio-Cosmetics, Seowon University, Chung-Ju 28674, Republic of Korea
| | - Won-Jae Chi
- Microorganism Resources Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Byoung-Hee Lee
- Biological Resources Research Department, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - You-Jung Jung
- Biological Resources Utilization Department, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup 56212, Republic of Korea
| | - Sang-Jae Lee
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan 46958, Republic of Korea
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Kim SJ, Lee DW. Epidemiology of Fractures Following Electric Scooter Injury. Indian J Orthop 2023; 57:818-826. [PMID: 37214358 PMCID: PMC10192486 DOI: 10.1007/s43465-023-00862-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/27/2023] [Indexed: 05/24/2023]
Abstract
Background The incidence of injuries associated with the use of electric scooter (e-scooter) has consistently increased since the launch of the first shared e-scooter systems in late 2017. The aim with this review was to investigate the epidemiological characteristics of fractures related to e-scooter accidents. Methods A systematic review of the all published papers was conducted regarding epidemiologic characteristics of traumatic fractures following e-scooter-related injuries. Multiple databases of PubMed, Web of Science, EMBASE, and Cochrane library were searched and relevant clinical studies reporting incidence for traumatic fractures from e-scooter-related injuries were included. All other types of studies and those including patients with non-orthopedic injuries were excluded. The Methodological Index for Non-randomized Studies (MINORS) was used to assess the quality of the included studies. The characteristics of patients were analyzed by the mean and the standard deviation for continuous variables. Results Eleven published studies (6579 patients) were identified which have been reported from Nov, 2019 to Sep, 2021. Periods of research in each study were different from May, 2017 to July, 2020. In the majority of cases, the mechanism of injury was a fall from the scooter (84.8%), which was followed by e-scooter motor vehicle accident (7.4%) and collision (5.5%). Regarding the fractures, upper limb injuries were the most prevalent (65%) and radial fracture was the most common fracture type of the upper limb (28.2%). Lower limb fractures were recorded in 475 (25.3%) patients, the most common being tibial fractures (8.4%). Conclusions As e-scooter market continues to considerably rise, the incidence of major orthopedic traumas is also likely to increase. Despite potential selection and reporting biases, our systematic review suggested up-to-date guidelines for the epidemiology of fractures following e-scooter injury. According to the results found in the present study, we believe that it is reasonable to mandate helmet use and the obligation to wear other types of safety equipment such as elbow and knee pads should be discussed.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, Hanil General Hospital, 308 Uicheon-Ro, Dobong-Gu, Seoul, 132-703 Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil General Hospital, 308 Uicheon-Ro, Dobong-Gu, Seoul, 132-703 Korea
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Ganbat D, Oh D, Lee YJ, Lee DW, Kim SB, Chi WJ, Lee KE, Lee BH, Jung YJ, Lee JS, Lee SJ. Description of Brachybacterium sillae sp. nov., a thermophilic bacterium isolated from a hot spring. Antonie Van Leeuwenhoek 2023:10.1007/s10482-023-01842-z. [PMID: 37227603 DOI: 10.1007/s10482-023-01842-z] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/09/2023] [Indexed: 05/26/2023]
Abstract
The taxonomic position of strain EF45031T, isolated from the Neungam Carbonate hot spring, was examined using the polyphasic taxonomic approach. Strain EF45031T shared the highest percentage of 16S rRNA gene sequence with Brachybacterium nesterenkovii CIP 104813 T (97.7%). The average nucleotide identity (ANI), average amino acid identity (AAI), and digital DNA-DNA hybridization (dDDH) values between strain EF45031T and the type strains B. nesterenkovii CIP 104813 T and B. phenoliresistens Phenol-AT were 77.0%, 69.15%, 21.9% and 75.73%, 68.81%, 20.5%, respectively. Phylogenomic analysis using an up-to-date bacterial core gene (UBCG) set revealed that strain EF45031T belonged to the genus Brachybacterium. Growth occurred between 25 and 50 ℃ at pH 6.0-9.0 and could tolerate salinity up to 5% (w/v). Strain had anteiso-C15:0 and anteiso-C17:0 as major fatty acids. Menaquinone-7 (MK-7) was the predominant respiratory menaquinone. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, three aminolipids, and two unidentified glycolipids. The cell-wall peptidoglycan contained meso-diaminopimelic acid as a diagnostic diamino acid. The genome comprised 2,663,796 bp, with a G + C content of 70.9%. Stress-responsive periplasmic chaperone/protease coding genes were identified in the genome of EF45031T and were not detected in other Brachybacterium species. The polyphasic taxonomic properties indicate that the strain represents a novel species within the genus Brachybacterium, for which the name Brachybacterium sillae sp. nov. is proposed. The type strain is EF45031T (= KCTC 49702 T = NBRC 115869 T).
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Affiliation(s)
- Dariimaa Ganbat
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan, 46958, South Korea
| | - DoKyung Oh
- Department of Food Science and Technology, Pukyong National University, Busan, 48513, South Korea
| | - Yong-Jik Lee
- Department of Bio-Cosmetics, Seowon University, Chung-Ju, 28674, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, 03722, South Korea
| | - Seong-Bo Kim
- Bio-Living Engineering Major, Global Leaders College, Yonsei University, Seoul, 03722, South Korea
| | - Won-Jae Chi
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - Ki-Eun Lee
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - Byoung-Hee Lee
- Biological Resources Research Department, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - You-Jung Jung
- Biological Resources Utilization Department, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - Jung-Sook Lee
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), Korean Collection for Type Cultures, Jeongeup, 56212, South Korea
| | - Sang-Jae Lee
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan, 46958, South Korea.
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Kim D, Lee DW, Lee J, Jang Y. Latarjet procedure without capsular repair produces favorable clinical results and avoids limitation in external rotation. Knee Surg Sports Traumatol Arthrosc 2023:10.1007/s00167-023-07393-0. [PMID: 36951982 DOI: 10.1007/s00167-023-07393-0] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 03/13/2023] [Indexed: 03/24/2023]
Abstract
PURPOSE This study aimed at analyzing the range of motion (ROM) and other clinical outcomes in patients with > 20% glenoid bone loss who underwent the Latarjet procedure with or without anterior capsule repair. METHODS This retrospective study included 47 patients with > 20% glenoid bone loss who underwent the classic Latarjet procedure from 2016 to 2021. Of these, 25 did not undergo capsular repair (no-capsular-repair group; group I) whereas 22 patients did (capsular-repair group; group II). The Rowe score, American Shoulder and Elbow Surgeons score, Visual Analogue Scale, ROM, recurrence, and complications were evaluated before and 3, 6, and 12 months after the surgery. A goniometer was used to measure the forward flexion and external rotation (arm adducted, 90° abducted) of both shoulders. The ROM deficit was measured as the difference from the contralateral healthy shoulder. RESULTS The external rotation in arm adduction at 3 and 6 months after surgery showed significantly better results in group I than group II(p = 0.002 at 3 months; p = 0.005 at 6 months). The deficit in external rotation with arm adduction was also significantly lower in group I at 3 months (p = 0.001) and 6 months (p = 0.001) after surgery. However, external rotation with arm adduction at 12 months after surgery did not significantly differ between the groups. Moreover, the ROM in external rotation with 90° arm abduction was significantly better in group I than that in group II at 3, 6, and 12 months postoperatively (p = 0.002, p = 0.001, and p = 0.005, respectively). The deficit in external rotation with 90° arm abduction gradually decreased with time after surgery and differed significantly between the groups. However, the difference in deficit between the two groups at 12 months after surgery did not exceed the measurement error. All clinical scores significantly improved after surgery compared to before surgery; however, the improvement did not significantly differ between the two groups. CONCLUSION The Latarjet procedure without capsular repair showed good laxity restoration and clinical results with less early postoperative external rotation limitation than that achieved by the same procedure with capsular repair. However, external rotation deficit at 1 year after surgery did not show a clinically relevant difference difference between the two groups. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- DooSup Kim
- Department of and Orthopedic Surgery, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University of Korea, 20 Ilsan-Ro, Wonju, 26426, Republic of Korea
- Yonsei Institute of Sports Science and Exercise Medicine, Wonju, Korea
| | - Dong-Woo Lee
- Department of and Orthopedics, Hanil General Hospital, Seoul, Republic of Korea
| | - JaeMin Lee
- Department of and Orthopedic Surgery, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University of Korea, 20 Ilsan-Ro, Wonju, 26426, Republic of Korea
| | - YoungHwan Jang
- Department of and Orthopedic Surgery, Wonju Severance Christian Hospital, Wonju College of Medicine, Yonsei University of Korea, 20 Ilsan-Ro, Wonju, 26426, Republic of Korea.
- Yonsei Institute of Sports Science and Exercise Medicine, Wonju, Korea.
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Kim SJ, Lee DW. A retrospective analysis of nonresponse to denosumab after hip fractures. Acta Orthop Belg 2023; 89:71-76. [PMID: 37294988 DOI: 10.52628/89.1.9808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Denosumab is an effective antiresorptive drug commonly prescribed for the treatment of osteoporosis. However, some patients do not respond well to denosumab treatment. The aim of this study was to evaluate the factors underlying treatment nonresponses to denosumab in elderly patients following hip fracture. This retrospective study included 130 patients treated with denosumab after osteoporotic hip fracture between March 2017 and March 2020. The patients were categorized as denosumab nonresponders if they had a T-score <-3 that persisted between dual-energy X-ray absorptiometry scans, a >3% decrease in bone mineral density (BMD), or an incident fracture on denosumab therapy. We examined the baseline characteristics associated with blunted BMD responses and compared the groups following denosumab treatment for 12 months. Of 130 patients with baseline data, 105 patients (80.8%) were considered responders. No difference in baseline vitamin D, calcium, BMI, age, gender, prior fracture history, or bisphosphonate use was observed between responders and nonresponders. A longer interval between denosumab injections was associated with suboptimal BMD response at both spine and total hip (p<0.001 and p=0.04, respectively). The overall L-BMD and H-BMD were significantly increased compared with pretreatment levels after denosumab treatment (5.7% and 2.5%, respectively). This study revealed that nonresponse was not strongly associated with certain baseline variables and it appears that the reponders and nonresponders were reasonably comparable in this study population. The results of our study highlight the importance of timely denosumab administration when using this drug for osteoporosis management. Physicians should keep these results in mind in clinical practice so that they can improve utilization of 6-month denosumab.
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Joo Y, Sung JY, Shin SM, Park SJ, Kim KS, Park KD, Kim SB, Lee DW. A Retro-Aldol Reaction Prompted the Evolvability of a Phosphotransferase System for the Utilization of a Rare Sugar. Microbiol Spectr 2023; 11:e0366022. [PMID: 36786576 PMCID: PMC10101011 DOI: 10.1128/spectrum.03660-22] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/25/2023] [Indexed: 02/15/2023] Open
Abstract
The evolution of the bacterial phosphotransferase system (PTS) linked to glycolysis is dependent on the availability of naturally occurring sugars. Although bacteria exhibit sugar specificities based on carbon catabolite repression, the acquisition and evolvability of the cellular sugar preference under conditions that are suboptimal for growth (e.g., environments rich in a rare sugar) are poorly understood. Here, we generated Escherichia coli mutants via a retro-aldol reaction to obtain progeny that can utilize the rare sugar d-tagatose. We detected a minimal set of adaptive mutations in the d-fructose-specific PTS to render E. coli capable of d-tagatose utilization. These E. coli mutant strains lost the tight regulation of both the d-fructose and N-acetyl-galactosamine PTS following deletions in the binding site of the catabolite repressor/activator protein (Cra) upstream from the fruBKA operon and in the agaR gene, encoding the N-acetylgalactosamine (GalNAc) repressor, respectively. Acquired d-tagatose catabolic pathways then underwent fine-tuned adaptation via an additional mutation in 1-phosphofructose kinase to adjust metabolic fluxes. We determined the evolutionary trajectory at the molecular level, providing insights into the mechanism by which enteric bacteria evolved a substrate preference for the rare sugar d-tagatose. Furthermore, the engineered E. coli mutant strain could serve as an in vivo high-throughput screening platform for engineering non-phosphosugar isomerases to produce rare sugars. IMPORTANCE Microorganisms generate energy through glycolysis, which might have preceded a rapid burst of evolution, including the evolution of cellular respiration in the primordial biosphere. However, little is known about the evolvability of cellular sugar preferences. Here, we generated Escherichia coli mutants via a retro-aldol reaction to obtain progeny that can utilize the rare sugar d-tagatose. Consequently, we identified mutational hot spots and determined the evolutionary trajectory at the molecular level. This provided insights into the mechanism by which enteric bacteria evolved substrate preferences for various sugars, accounting for the widespread occurrence of these taxa. Furthermore, the adaptive laboratory evolution-induced cellular chassis could serve as an in vivo high-throughput screening platform for engineering tailor-made non-phosphorylated sugar isomerases to produce low-calorigenic rare sugars showing antidiabetic, antihyperglycemic, and antitumor activities.
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Affiliation(s)
- Yunhye Joo
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Jae-Yoon Sung
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Sun-Mi Shin
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sun Jun Park
- Brain Science Institute, Korea Institute of Science & Technology (KIST), Seoul, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
| | - Kyoung Su Kim
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Ki Duk Park
- Brain Science Institute, Korea Institute of Science & Technology (KIST), Seoul, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
| | - Seong-Bo Kim
- Bio-Living Engineering Major, Global Leaders College, Yonsei University, Seoul, Republic of Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
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Kim KS, Tiffany E, Lee JY, Oh A, Jin HS, Kim JS, Lee JS, Nam MH, Hong SJ, Park S, Koh H, Kim BS, Lee YK, Lee DW. Genome-wide multi-omics analysis reveals the nutrient-dependent metabolic features of mucin-degrading gut bacteria. Gut Microbes 2023; 15:2221811. [PMID: 37305974 DOI: 10.1080/19490976.2023.2221811] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/13/2023] Open
Abstract
The prevalence and occurrence of mucin-degrading (MD) bacteria, such as Akkermansia muciniphila and Ruminococcus gnavus, is highly associated with human health and disease states. However, MD bacterial physiology and metabolism remain elusive. Here, we assessed functional modules of mucin catabolism, through a comprehensive bioinformatics-aided functional annotation, to identify 54 A. muciniphila genes and 296 R. gnavus genes. The reconstructed core metabolic pathways coincided with the growth kinetics and fermentation profiles of A. muciniphila and R. gnavus grown in the presence of mucin and its constituents. Genome-wide multi-omics analyses validated the nutrient-dependent fermentation profiles of the MD bacteria and identified their distinct mucolytic enzymes. The distinct metabolic features of the two MD bacteria induced differences in the metabolite receptor levels and inflammatory signals of the host immune cells. In addition, in vivo experiments and community-scale metabolic modeling demonstrated that different dietary intakes influenced the abundance of MD bacteria, their metabolic fluxes, and gut barrier integrity. Thus, this study provides insights into how diet-induced metabolic differences in MD bacteria determine their distinct physiological roles in the host immune response and the gut ecosystem.
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Affiliation(s)
- Kyoung Su Kim
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Eunike Tiffany
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Ji-Young Lee
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Ara Oh
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Hyeon-Su Jin
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Ji-Sun Kim
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup, Republic of Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup, Republic of Korea
| | - Myung Hee Nam
- Seoul Center, Korea Basic Science Institute, Seoul, Republic of Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sowon Park
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hong Koh
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bong-Soo Kim
- Department of Life Science, Hallym University, Chuncheon, Republic of Korea
| | - Yun Kyung Lee
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bio Science, Soonchunhyang University, Cheonan, Republic of Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
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Kim SJ, Kim JW, Lee DW. Denosumab versus zoledronic acid in elderly patients after hip fracture. J Orthop Surg (Hong Kong) 2022; 30:10225536221147082. [PMID: 36541833 DOI: 10.1177/10225536221147082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Two injectable anti-osteoporosis medications, denosumab and zoledronic acid, have been widely used to treat patients with severe osteoporosis. The purpose of this study was to evaluate the real-world effectiveness and adherence of denosumab compared to zoledronic acid in geriatric patients after a hip fracture. METHODS A total of 282 patients treated with osteoporotic hip fracture between March 2014 and Aug 2022 were retrospectively reviewed. The patients were asked to select the anti-osteoporosis medication after surgery. Treatment persistence was monitored by follow-up visit to the outpatient clinic at postoperative 2 years. RESULTS Of 282 individuals with baseline data, 162 patients took subcutaneous denosumab and 120 patients took intravenous zoledronic acid. At postoperative 2 years, the change in bone mineral density (BMD) from baseline was greater in the denosumab group compared with the zoledronic acid group (p < 0.001). The rate of persistence to denosumab was significantly higher than that for 12-months zoledronic acid (p = 0.01). Serious adverse events were similar in the two groups. CONCLUSIONS Our study revealed the effectiveness and patients' persistence for two commonly used anti-osteoporosis agents after hip fracture. In this frail, elderly population, half-yearly denosumab was superior to yearly zoledronic acid in BMD and demonstrated significant higher persistence rate, indicating a potential therapeutic advantage that warrants further validation.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, 371135Hanil General Hospital, Dobong-gu, Republic of Korea
| | - Ji Woon Kim
- Department of Orthopaedics, 371135Hanil General Hospital, Dobong-gu, Republic of Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, 371135Hanil General Hospital, Dobong-gu, Republic of Korea
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Ganbat D, Jeong GE, Oh D, Lee DW, Lee YJ, Kim SB, Cha IT, Chi WJ, Park SK, Lee JS, Lee SJ. Description of Microbacterium neungamense sp. nov. isolated from a hot spring. Arch Microbiol 2022; 205:23. [PMID: 36509934 DOI: 10.1007/s00203-022-03343-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 12/15/2022]
Abstract
The Gram-positive, nonmotile, rod-shaped bacterium EF45044T was isolated from a hot spring in Chungju, South Korea. The strain was able to grow at concentrations of 0‒5% (w/v) NaCl, at pH 6.0‒10.0 and in the temperature range of 18‒50 °C. Strain EF45044T showed the highest 16S rRNA gene sequence similarity (98.2%) with Microbacterium ketosireducens DSM 12510T, and the digital DNA‒DNA hybridization (dDDH), average amino acid identity (AAI), and average nucleotide identity (ANI) values were all lower than the accepted species threshold. Strain EF45044T contained MK‒12 and MK‒13 as the predominant respiratory quinones and anteiso‒C17:0, anteiso‒C15:0, and iso‒C16:0 as the major fatty acids. Diphosphatidylglycerol, phosphatidylglycerol, and glycolipid were detected as the major polar lipids. The cell-wall peptidoglycan contained ornithine. The DNA G + C content was 71.4 mol%. Based on the polyphasic data, strain EF45044T (= KCTC 49703T) presents a novel species of the genus Microbacterium, for which the name Microbacterium neungamense sp. nov. is proposed.
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Affiliation(s)
- Dariimaa Ganbat
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan, 46958, South Korea
| | - Ga Eul Jeong
- Library of Marine Samples, Korea Institute of Ocean Science and Technology (KIOST), Geoje, 53201, South Korea
| | - DoKyung Oh
- Department of Food Science and Technology, Pukyong National University, Busan, 48513, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, 03722, South Korea
| | - Yong-Jik Lee
- Department of Bio-Cosmetics, Seowon University, Chung-Ju, 28674, South Korea
| | - Seong-Bo Kim
- Bio-Living Engineering Major, Global Leaders College, Yonsei University, Seoul, 03722, South Korea
| | - In-Tae Cha
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - Won-Jae Chi
- Microorganism Resources Division, National Institute of Biological Resources, Incheon, 22689, South Korea
| | - Seul-Ki Park
- Smart Food Manufacturing Project Group, Korea Food Research Institute, Wanju, 55365, South Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup, 56212, South Korea.
| | - Sang-Jae Lee
- Major in Food Biotechnology and Research Center for Extremophiles and Marine Microbiology, Silla University, Busan, 46958, South Korea.
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Kang GU, Park S, Jung Y, Jee JJ, Kim MS, Lee S, Lee DW, Shin JH, Koh H. Exploration of Potential Gut Microbiota-Derived Biomarkers to Predict the Success of Fecal Microbiota Transplantation in Ulcerative Colitis: A Prospective Cohort in Korea. Gut Liver 2022; 16:775-785. [PMID: 35975640 PMCID: PMC9474483 DOI: 10.5009/gnl210369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/02/2021] [Accepted: 11/23/2021] [Indexed: 11/04/2022] Open
Abstract
Background/Aims Although fecal microbiota transplantation (FMT) has been proven as one of the promising treatments for patients with ulcerative colitis (UC), potential prognostic markers regarding the clinical outcomes of FMT remain elusive. Methods We collected fecal samples of 10 participants undergoing FMT to treat UC and those from the corresponding donors. We categorized them into two groups: responders and nonresponders. Sequencing of the bacterial 16S rRNA gene was conducted on the samples to explore bacterial composition. Results Analyzing the gut microbiota of patients who showed different outcomes in FMT presented a distinct microbial niche. Source tracking analysis showed the nonresponder group had a higher rate of preservation of donor microbiota, underscoring that engraftment degrees are not one of the major drivers for the success of FMT. At the phylum level, Bacteroidetes bacteria were significantly depleted (p<0.003), and three genera, including Enterococcus, Rothia, and Pediococcus, were enriched in the responder group before FMT (p=0.003, p=0.025, and p=0.048, respectively). Furthermore, we applied a machine learning algorithm to build a prediction model that might allow the prediction of FMT outcomes, which yielded an area under the receiver operating characteristic (ROC) curve of 0.844. Notably, the microbiota-based model was much better at predicting outcomes than the clinical features model (area under the ROC curve=0.531). Conclusions This study is the first to suggest the significance of indigenous microbiota of recipients as a critical factor. The result highlights that bacterial composition should be evaluated before FMT to select suitable patients and achieve better efficiency.
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Affiliation(s)
- Gi-Ung Kang
- Department of Applied Biosciences, Kyungpook National University, Daegu, Korea
| | - Sowon Park
- Department of Pediatrics, Severance Fecal Microbiota Transplantation Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yeongyun Jung
- Department of Applied Biosciences, Kyungpook National University, Daegu, Korea
| | - Jai J Jee
- Department of Pediatrics, Severance Fecal Microbiota Transplantation Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Min-Sueng Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu, Korea
| | - Seungjun Lee
- Department of Food Science and Nutrition, Pukyong National University, Busan, Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, Korea
| | - Hong Koh
- Department of Pediatrics, Severance Fecal Microbiota Transplantation Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Lee JE, Kim KS, Koh H, Lee DW, Kang NJ. Diet-Induced Host-Microbe Interactions: Personalized Diet Strategies for Improving Inflammatory Bowel Disease. Curr Dev Nutr 2022; 6:nzac110. [PMID: 36060223 PMCID: PMC9429970 DOI: 10.1093/cdn/nzac110] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/25/2022] [Accepted: 06/13/2022] [Indexed: 12/02/2022] Open
Abstract
Inflammatory bowel disease (IBD) is an idiopathic inflammatory disease. Environmental sanitization, modern lifestyles, advanced medicines, ethnic origins, host genetics and immune systems, mucosal barrier function, and the gut microbiota have been delineated to explain how they cause mucosal inflammation. However, the pathogenesis of IBD and its therapeutic targets remain elusive. Recent studies have highlighted the importance of the human gut microbiota in health and disease, suggesting that the pathogenesis of IBD is highly associated with imbalances of the gut microbiota or alterations of epithelial barrier function in the gastrointestinal (GI) tract. Moreover, diet-induced alterations of the gut microbiota in the GI tract modulate immune responses and perturb metabolic homeostasis. This review summarizes recent findings on IBD and its association with diet-induced changes in the gut microbiota; furthermore, it discusses how diets can modulate host gut microbes and immune systems, potentiating the impact of personalized diets on therapeutic targets for IBD.
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Affiliation(s)
- Jae-Eun Lee
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, South Korea
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Kyoung Su Kim
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Hong Koh
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Nam Joo Kang
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, South Korea
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22
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Lee JY, Hwang HW, Jin HS, Lee JE, Kang NJ, Lee DW. A Genomics-Based Semirational Approach for Expanding the Postbiotic Potential of Collagen Peptides Using Lactobacillaceae. J Agric Food Chem 2022; 70:8365-8376. [PMID: 35758868 DOI: 10.1021/acs.jafc.2c01251] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Food-derived bioactive peptides (BPs) have received considerable attention as postbiotics for human gut health. Here we used a genomics-based semirational approach to expand the postbiotic potential of collagen peptides (CPs) produced from probiotic fermentation. In silico digestion revealed distinct BPs embedded in fish collagen in a protease-dependent manner. Anaerobic digestion of collagen by representative Lactobacillaceae species revealed differential substrate utilization and collagen degradation patterns. Nanoliquid chromatography-mass spectrometry analysis of CPs showed that each species exhibited different cleavage patterns and unique peptide profiles. Remarkably, the 1-10 kDa CPs produced by Lacticaseibacillus paracasei showed agonistic activities toward G protein-coupled receptor 35 (GPR35). These CPs could repair intestinal epithelium through the GPR35-mediated extracellular signal-regulated protein kinase (ERK) 1/2 signaling pathway, suggesting that probiotic-aided collagen hydrolysates can serve as postbiotics for host-microbe interactions. Therefore, this study provides an effective strategy for the rapid screening of CPs for gut health in the gastrointestinal tract.
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Affiliation(s)
- Ji-Young Lee
- Department of Biotechnology, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
| | - Hye Won Hwang
- Department of Bioindustrial Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
| | - Hyeon-Su Jin
- Department of Biotechnology, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
| | - Jae-Eun Lee
- Department of Biotechnology, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
| | - Nam Joo Kang
- School of Food Science and Biotechnology, Kyungpook National University, Daehak-ro 80, Buk-gu, Daegu 41566, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
- Department of Bioindustrial Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, South Korea
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Cho YJ, Lee DW, Shin HS, Hwang YB, Lee DO, Kim DY, Lee DY. Change of In-Shoe Plantar Pressure According to Types of Shoes (Flat Shoes, Running Shoes, and High Heels). Clin Orthop Surg 2022; 14:281-288. [PMID: 35685969 PMCID: PMC9152888 DOI: 10.4055/cios20260] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/21/2021] [Accepted: 12/27/2021] [Indexed: 11/22/2022] Open
Abstract
Background The type of footwear is one of several factors that affect foot pressure. Despite its usefulness in identifying pathology and preventing and treating foot-related diseases, the type of shoes has been investigated and compared in only a few studies. This study aimed to investigate differences in plantar pressure, induced by flat, running, and high-heeled shoes in healthy, young women. Methods A total of 27 healthy women (27 feet) with a mean age of 21.5 ± 2.03 years were included in this study. Based on demographic data, radiologic measurements, clinical scores, temporal gait parameters, and kinematic parameters of gait, we confirmed the participants had normal feet. Then, pedobarographic data were measured by dividing each foot into seven regions to compare the three types of shoes. Peak plantar pressure and pressure-time integral were calculated using the Pedar-X system. The one-way analysis of variance and the Kruskal-Wallis test with Mann Whitney U-test were used for statistical analyses. Results Regarding the 7 regions of the foot, flat shoes resulted in a significantly higher pressure than running shoes in the hallux and lesser toes and the highest pressure in the metatarsal head (MTH) 3-5 and the hindfoot. In contrast, in the MTH 1 and MTH 2 regions, the high-heeled shoes had the highest measured pressure, followed by the flat shoes. Lastly, there was no high pressure in running shoes in any region except for the midfoot compared to the other shoes. Conclusions It can be inferred from our findings that flat and high-heeled shoes can generate a considerable burden on specific parts of the foot, which will aid in choosing appropriate shoes. Also, wearing running shoes places less burden on the overall foot.
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Affiliation(s)
- Yun Jae Cho
- Department of Orthopedic Surgery, Han-il General Hospital, Seoul, Korea
| | - Dong-Woo Lee
- Department of Orthopedic Surgery, Han-il General Hospital, Seoul, Korea
| | - Hyuck Soo Shin
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Yoon Bin Hwang
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Dong Oh Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Dae-Yoo Kim
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Dong Yeon Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
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Byeon G, Park JE, Jeon HJ, Seong SJ, Lee DW, Cho SJ, Chang SM, Kim BS, Hahm BJ, Hong JP, Park JI. Associations between game use and mental health in early adulthood: A nationwide study in Korea. J Affect Disord 2022; 297:579-585. [PMID: 34737016 DOI: 10.1016/j.jad.2021.10.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 09/30/2021] [Accepted: 10/23/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND The number of digital game users is increasing, and so is attention to digital gaming's effects on mental health. We aimed to reveal if risky (game addiction) and usual game use (non-risky) are associated with mental health in early adulthood. METHODS Using data from the nationwide cross-sectional Korean Epidemic Catchment Area study for psychiatric disorders, 415 participants aged 18-30 years were divided into "non-game," "usual game," and "risky game" user groups based on the previous month's game use and cut-off value of game overuse screening questionnaire. Multiple linear and logistic regressions revealed the association between game use groups, perceived mental health, and lifetime prevalence of clinical mental disorders including suicidal ideation. RESULTS Among the 415 participants, 167 were non-game users, 175, usual game users, and 73, risky game users. Risky game users self-reported decreased satisfaction and happiness, and a significantly higher lifetime prevalence of major depressive disorder, alcohol dependence, and suicidal ideation. Usual game users were significantly associated with higher lifetime prevalence of alcohol dependence and suicidal ideation. Self-reported happiness partially mediated between game use and lifetime suicidal ideation in risky, but not usual game users. LIMITATIONS This study is a cross-sectional observational study which was not possible to define the temporal relationship. CONCLUSIONS Both risky and usual game use are associated with mental health problems in early adulthood, indicating the need for careful mental health screening on not only risky game users but also usual game users.
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Affiliation(s)
- Gihwan Byeon
- Department of Neuropsychiatry, Kangwon National University Hospital, 156 Baengnyeong-ro, Chuncheon-si, Gangwon-do 24289, South Korea
| | - Jee Eun Park
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, South Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Kore
| | - Hong Jin Jeon
- Department of Psychiatry, School of Medicine, Sungkyunkwan University, Seoul, South Jorea; Department of Psychiatry, Samsung Medical Center, Seoul, South Korea
| | - Su Jeong Seong
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University College of Medicine, Seoul, South Korea
| | - Seong-Jin Cho
- Department of Psychiatry, Gachon Medical School, Incheon, South Korea
| | - Sung Man Chang
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Byung-Soo Kim
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Bong-Jin Hahm
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, South Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Kore
| | - Jin Pyo Hong
- Department of Psychiatry, School of Medicine, Sungkyunkwan University, Seoul, South Jorea; Department of Psychiatry, Samsung Medical Center, Seoul, South Korea
| | - Jong-Ik Park
- Department of Neuropsychiatry, Kangwon National University Hospital, 156 Baengnyeong-ro, Chuncheon-si, Gangwon-do 24289, South Korea; Department of Psychiatry, Kangwon National University College of Medicine, Chuncheon, South Korea.
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Lee MJ, Park YM, Kim B, Tae IH, Kim NE, Pranata M, Kim T, Won S, Kang NJ, Lee YK, Lee DW, Nam MH, Hong SJ, Kim BS. Disordered development of gut microbiome interferes with the establishment of the gut ecosystem during early childhood with atopic dermatitis. Gut Microbes 2022; 14:2068366. [PMID: 35485368 PMCID: PMC9067516 DOI: 10.1080/19490976.2022.2068366] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [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] [Received: 12/22/2021] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 02/04/2023] Open
Abstract
The gut microbiome influences the development of allergic diseases during early childhood. However, there is a lack of comprehensive understanding of microbiome-host crosstalk. Here, we analyzed the influence of gut microbiome dynamics in early childhood on atopic dermatitis (AD) and the potential interactions between host and microbiome that control this homeostasis. We analyzed the gut microbiome in 346 fecal samples (6-36 months; 112 non-AD, 110 mild AD, and 124 moderate to severe AD) from the Longitudinal Cohort for Childhood Origin of Asthma and Allergic Disease birth cohort. The microbiome-host interactions were analyzed in animal and in vitro cell assays. Although the gut microbiome maturated with age in both AD and non-AD groups, its development was disordered in the AD group. Disordered colonization of short-chain fatty acids (SCFA) producers along with age led to abnormal SCFA production and increased IgE levels. A butyrate deficiency and downregulation of GPR109A and PPAR-γ genes were detected in AD-induced mice. Insufficient butyrate decreases the oxygen consumption rate of host cells, which can release oxygen to the gut and perturb the gut microbiome. The disordered gut microbiome development could aggravate balanced microbiome-host interactions, including immune responses during early childhood with AD.
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Affiliation(s)
- Min-Jung Lee
- Department of Life Science, Multidisciplinary Genome Institute, Hallym University, Chuncheon, Republic of Korea
| | - Yoon Mee Park
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Byunghyun Kim
- Seoul Center, Korea Basic Science Institute, Seoul, Republic of Korea
| | - in Hwan Tae
- Seoul Center, Korea Basic Science Institute, Seoul, Republic of Korea
| | - Nam-Eun Kim
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Marina Pranata
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bioscience, Soonchunhyang University, Cheonan, Republic of Korea
| | - Taewon Kim
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, Republic of Korea
| | - Sungho Won
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
| | - Nam Joo Kang
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, Republic of Korea
- Department of Integrative Biology, Kyungpook National University, Daegu, Republic of Korea
| | - Yun Kyung Lee
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-Bioscience, Soonchunhyang University, Cheonan, Republic of Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Myung Hee Nam
- Seoul Center, Korea Basic Science Institute, Seoul, Republic of Korea
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Humidifier Disinfectant Health Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Bong-Soo Kim
- Department of Life Science, Multidisciplinary Genome Institute, Hallym University, Chuncheon, Republic of Korea
- The Korean Institute of Nutrition, Hallym University, Chuncheon, Republic of Korea
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Jung J, Lee DW, Son YK, Kim BS, Shin HC. Volitional EMG Estimation Method during Functional Electrical Stimulation by Dual-Channel Surface EMGs. Sensors (Basel) 2021; 21:s21238015. [PMID: 34884015 PMCID: PMC8659961 DOI: 10.3390/s21238015] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/19/2021] [Accepted: 11/29/2021] [Indexed: 11/24/2022]
Abstract
We propose a novel dual-channel electromyography (EMG) spatio-temporal differential (DESTD) method that can estimate volitional electromyography (vEMG) signals during time-varying functional electrical stimulation (FES). The proposed method uses two pairs of EMG signals from the same stimulated muscle to calculate the spatio-temporal difference between the signals. We performed an experimental study with five healthy participants to evaluate the vEMG signal estimation performance of the DESTD method and compare it with that of the conventional comb filter and Gram–Schmidt methods. The normalized root mean square error (NRMSE) values between the semi-simulated raw vEMG signal and vEMG signals which were estimated using the DESTD method and conventional methods, and the two-tailed t-test and analysis of variance were conducted. The results showed that under the stimulation of the gastrocnemius muscle with rapid and dynamically modulated stimulation intensity, the DESTD method had a lower NRMSE compared to the conventional methods (p < 0.01) for all stimulation intensities (maximum 5, 10, 15, and 20 mA). We demonstrated that the DESTD method could be applied to wearable EMG-controlled FES systems because it estimated vEMG signals more effectively compared to the conventional methods under dynamic FES conditions and removed unnecessary FES-induced EMG signals.
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Affiliation(s)
- Joonyoung Jung
- Electronics and Telecommunications Research Institute, Daejeon 34129, Korea
| | - Dong-Woo Lee
- Electronics and Telecommunications Research Institute, Daejeon 34129, Korea
| | - Yong Ki Son
- Electronics and Telecommunications Research Institute, Daejeon 34129, Korea
| | - Bae Sun Kim
- Electronics and Telecommunications Research Institute, Daejeon 34129, Korea
| | - Hyung Cheol Shin
- Electronics and Telecommunications Research Institute, Daejeon 34129, Korea
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Jung J, Lee DW, Son Y, Kim B, Gu J, Shin HC. Volitional EMG Controlled Wearable FES System for Lower Limb Rehabilitation. Annu Int Conf IEEE Eng Med Biol Soc 2021; 2021:7099-7102. [PMID: 34892737 DOI: 10.1109/embc46164.2021.9629852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Muscle rehabilitation by functional electrical stimulation (FES) is one of the effective treatments for the patients with neuromuscular diseases. The conventional FES applications, however, have limitations that utilize predetermined or repetitive stimulation patterns with the help of experts such as physical therapists. Therefore, we propose a wearable FES system in which the stimulus intensity is dynamically controlled by the motion intention of user in this paper. The proposed FES system utilizes electromyography (EMG) and inertial measurement unit (IMU) sensors for estimating the motion intention regardless of electrical stimulation, and is designed for the lower limb rehabilitation. The overall system configurations including hardware and software are presented in this paper, and the system performance was tested by lower limb exercises, e.g., squat, heel lift, and gait.
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Lee JY, Jin HS, Kim KS, Baek JH, Kim BS, Lee DW. Nutrient-specific proteomic analysis of the mucin degrading bacterium Akkermansia muciniphila. Proteomics 2021; 22:e2100125. [PMID: 34596327 DOI: 10.1002/pmic.202100125] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 01/05/2023]
Abstract
Akkermansia muciniphila is a prominent mucin-degrading bacterium that acts as a keystone species in regulating the human gut microbiota. Despite recently increasing research into this bacterium and its relevance to human health, a high-resolution database of its functional proteins remains scarce. Here, we provide a proteomic overview of A. muciniphila grown in different nutrient conditions ranging from defined to complex. Of 2318 protein-coding genes in the genome, we identified 841 (40%) that were expressed at the protein level. Overall, proteins involved in energy production and carbohydrate metabolism indicate that A. muciniphila relies mainly on the Embden-Meyerhof-Parnas pathway, and produces short-chain fatty acids through anaerobic fermentation in a nutrient-specific manner. Moreover, this bacterium possesses a broad repertoire of glycosyl hydrolases, together with putative peptidases and sulfatases, to cleave O-glycosylated mucin. Of them, putative mucin-degrading enzymes (Amuc_1220, Amuc_1120, Amuc_0052, Amuc_0480, and Amuc_0060) are highly abundant in the mucin-supplemented media. Furthermore, A. muciniphila uses mucin-derived monosaccharides as sources of energy and cell wall biogenesis. Our dataset provides nutrient-dependent global proteomes of A. muciniphila ATCC BAA-835 to offer insights into its metabolic functions that shape the composition of the human gut microbiota via mucin degradation.
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Affiliation(s)
- Ji-Young Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Hyeon-Su Jin
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Kyoung Su Kim
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Je-Hyun Baek
- R&D Center for Clinical Mass Spectrometry, Seegene Medical Foundation, Seoul, South Korea
| | - Bong-Soo Kim
- Department of Life Science, Multidisciplinary Genome Institute, Hallym University, Chuncheon, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Lee J, Kim H, Chang SM, Hong JP, Lee DW, Hahm BJ, Cho SJ, Park JI, Jeon HJ, Seong SJ, Park JE, Kim BS. The Association of Childhood Maltreatment with Adulthood Mental Disorders and Suicidality in Korea: a Nationwide Community Study. J Korean Med Sci 2021; 36:e240. [PMID: 34581520 PMCID: PMC8476936 DOI: 10.3346/jkms.2021.36.e240] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 08/02/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Although childhood maltreatment is a known risk factor for adulthood mental health, the impact of different types of childhood maltreatment on mental disorders is not yet clear. This study explored the association of each type of childhood maltreatment with adulthood mental disorders and suicidality in South Korea. METHODS A total of 5,102 individuals from the general populations over the age of 18 responded to the Korean version of the Composite International Diagnostic Interview and questions about childhood maltreatment (emotional neglect, psychological abuse, physical abuse, and sexual abuse). To evaluate the odds ratio for mental disorders and suicidality associated with each type of childhood maltreatment, we used logistic regression analysis. RESULTS About 17.0% of the respondents reported having experienced a type of maltreatment in childhood. According to the type, 9.4% reported physical abuse, 9.3% reported emotional neglect, 7.9% reported psychological abuse, and 3.8% reported sexual abuse. Exposure to each type of childhood maltreatment was associated with most types of mental disorders after adjusting for sociodemographic factors. Each type of childhood maltreatment victim was associated with suicidality (suicidal ideations, suicide plans, and suicide attempts). Dose-response patterns for suicide attempts were observed in all types of victims. Moreover, the respondents who experienced frequent childhood emotional neglect were 14 times more likely to have attempted suicide. CONCLUSION Childhood maltreatment was associated with mental health in adulthood. The findings show the need for early detection and intervention of victims of childhood maltreatment to minimize its negative impact on adult mental health.
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Affiliation(s)
- Jimin Lee
- Department of Psychiatry, Kyungpook National University Hospital, Daegu, Korea
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyerim Kim
- Department of Psychiatry, Kyungpook National University Hospital, Daegu, Korea
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sung Man Chang
- Department of Psychiatry, Kyungpook National University Hospital, Daegu, Korea
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jin Pyo Hong
- Department of Psychiatry, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University College of Medicine, Seoul, Korea
| | - Bong-Jin Hahm
- Department of Psychiatry and Behavioral Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Jin Cho
- Department of Psychiatry, Gachon Medical School, Incheon, Korea
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Hong Jin Jeon
- Department of Psychiatry, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Su Jeong Seong
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Korea
| | - Jee Eun Park
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
| | - Byung-Soo Kim
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, Korea
- Department of Psychiatry, Kyungpook National University Chilgok Hospital, Daegu, Korea.
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Lee HY, Jang DH, Kim JW, Lee DW, Jang JH, Joo J. Correction to: Compound heterozygous variants including a novel copy number variation in a child with atypical ataxia-telangiectasia: a case report. BMC Med Genomics 2021; 14:231. [PMID: 34544410 PMCID: PMC8454125 DOI: 10.1186/s12920-021-01086-8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Hoo Young Lee
- TBI Rehabilitation Center, National Traffic Injury Rehabilitation Hospital, Gyeonggi-do, Republic of Korea.,Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.,National Traffic Injury Rehabilitation Research Institute, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea
| | - Dae-Hyun Jang
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea.
| | - Jae-Won Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Dong-Woo Lee
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Ja-Hyun Jang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea
| | - Joungsu Joo
- EONE-DIAGNOMICS Genome Center, Incheon, Republic of Korea
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Lee DW, Choi SY, Kim JW, Kwon TG, Lee ST. The impact of COVID-19 on the injury pattern for maxillofacial fracture in Daegu city, South Korea. Maxillofac Plast Reconstr Surg 2021; 43:35. [PMID: 34515891 PMCID: PMC8436019 DOI: 10.1186/s40902-021-00322-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 07/27/2021] [Accepted: 09/02/2021] [Indexed: 02/08/2023] Open
Abstract
Background This study aimed to analyze the impact of COVID-19 on oral and maxillofacial fracture in Daegu by comparing the demographic data in 2019 and 2020, retrospectively. We collected data from all patients having trauma who visited the emergency room for oral and maxillofacial fractures. Methods This retrospective study was based on chart review of patients who visited the emergency department of Kyungpook National University Hospital in Daegu, South Korea from January 1, 2019, to December 31, 2020. We conducted a comparative study for patients who presented with maxillofacial fractures with occlusal instability during pre-COVID-19 era (2019) and COVID-19 era (2000) with demographics and pattern of injuries. Results After the outbreak of COVID-19, the number of monthly oral and maxillofacial fractures, especially sports-related oral and maxillofacial fractures, decreased significantly. Also, the number of alcohol-related fractures increased significantly. In addition, as the number of monthly confirmed cases of COVID-19 increases, the incidence of fracture among these cases tends to decrease. Conclusions The COVID-19 pandemic has changed the daily life in Korea. Identifying the characteristics of patients having trauma can provide a good lead to understand this long-lasting infectious disease and prepare for future outbreaks.
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Affiliation(s)
- Dong-Woo Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea
| | - So-Young Choi
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea
| | - Jin-Wook Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea
| | - Tae-Geon Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea
| | - Sung-Tak Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea.
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Kim SJ, Cho YJ, Lee DW. The impact of COVID-19 on the epidemiologic characteristics of traumatic fractures: A systematic review of recent literature. Acta Orthop Traumatol Turc 2021; 55:439-443. [PMID: 34730532 DOI: 10.5152/j.aott.2021.20435] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate whether COVID-19-related period of societal restrictions and nationwide in 2020 were associated with a significant change in types and frequency of traumatic fractures. METHODS A systematic review of recent literature on epidemiologic characteristics of traumatic fractures during the outbreak of COVID-19 was conducted. Multiple databases of PubMed, EMBASE, Cochrane library, and Web of Science were searched, and articles comparing incidence for traumatic fractures before and after of COVID-19 outbreak were Results: From 8 published studies which had been reported from July 2020 to September 2020, a total of 9305 patients were identified. The study period of each study included varied from January 24 to May 22 in 2020. There was a significant decrease in the total number of trauma cases during lockdown by 3229 cases (pre-lockdown n = 6267 and lockdown n = 3038), amounting to a decrease by a pooled percentage of 51.6% (P = 0.012). The incidence of hand and tibia fractures decreased while the incidence of femoral fracture significantly increased during COVID-19 outbreak (P < 0.001). There was no significant difference in the fracture frequency for all other skeletal areas (P > 0.05). CONCLUSION Evidence suggests that there was a significant decrease in the overall number of traumatic fractures during the COVID-19-related period of societal restrictions and lockdown. Proportions of most fractured areas were not significantly influenced by the state of emergency, except for femoral fractures, which had occurred more often during this state. Care must be taken, while developing contingency plans for reallocating resources during the COVID-19 pandemic, not to assume that all trauma presentations will decrease. Evidence from this study has suggested there was a significant decrease in the overall number of traumatic fractures during the COVID-19-related period of societal restrictions and lockdown. Proportions of most fractured areas were not significantly influenced by the state of emergency, except for femoral fractures which had occurred more often during this state. LEVEL OF EVIDENCE Level III, Diagnostic Study.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, Hanil general hospital 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
| | - Yun Jae Cho
- Department of Orthopaedics, Hanil general hospital 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil general hospital 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
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Lee HY, Jang DH, Kim JW, Lee DW, Jang JH, Joo J. Compound heterozygous variants including a novel copy number variation in a child with atypical ataxia-telangiectasia: a case report. BMC Med Genomics 2021; 14:204. [PMID: 34404412 PMCID: PMC8371864 DOI: 10.1186/s12920-021-01053-3] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 08/10/2021] [Indexed: 11/21/2022] Open
Abstract
Background Ataxia-telangiectasia is a rare autosomal recessive, neurodegenerative disorder caused by alterations in the ATM gene. The majority of ATM pathogenic variants are frameshift or nonsense variants which are predicted to truncate the whole ATM protein. Herein, we report on an ataxia telangiectasia child with atypical phenotype who was identified as compound heterozygous for two ATM variants involving a previously described pathogenic single nucleotide variation (SNV) and a novel copy number variation (CNV). Case presentation A 6-year-old boy presented with delayed development and oculomotor apraxia. Brain magnetic resonance imaging showed interval development of mild atrophy in the cerebellum. Serum alpha fetoprotein level was in normal range. Next-generation sequencing and single-nucleotide polymorphism array tests were performed. Next-generation sequencing revealed a heterozygous nonsense pathogenic variant in ATM, c.742C > T (p.Arg248Ter) inherited from the father. Single-nucleotide polymorphism array revealed a compound heterozygous CNV, arr[GRCh37] 11q22.3(10851766–108183226) × 1, 31460 bp (exons 24–40 deletion of ATM) inherited from the mother, which was validated by reverse transcription-polymerase chain reaction analysis (RT-PCR). We demonstrated that this variant (NM_000051.4:c.3403_6006del) generated a product of in-frame deletion of exon 24–40 of ATM (p.Ser1135_Gln2002del). Conclusions The compound heterozygosity for ATM variants involving a previously described pathogenic SNV and a novel CNV may be associated with the atypical clinical manifestations. This clinical report extends the genetic and phenotypic spectrum of ATM pathogenic variants in atypical ataxia-telangiectasia, thus making implementation of advanced analysis beyond the routine next-generation sequencing an important consideration in diagnosis and rehabilitation services for children with ataxia-telangiectasia. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-021-01053-3.
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Affiliation(s)
- Hoo Young Lee
- TBI Rehabilitation Center, National Traffic Injury Rehabilitation Hospital, Gyeonggi-do, Republic of Korea.,Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.,National Traffic Injury Rehabilitation Research Institute, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea
| | - Dae-Hyun Jang
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea.
| | - Jae-Won Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Dong-Woo Lee
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Ja-Hyun Jang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Seoul, Korea
| | - Joungsu Joo
- EONE-DIAGNOMICS Genome Center, Incheon, Republic of Korea
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Sung JY, Lee YJ, Cho YJ, Shin MN, Lee SJ, Lee HS, Koh H, Bae JW, Shin JH, Kim HJ, Lee DW. A large-scale metagenomic study for enzyme profiles using the focused identification of the NGS-based definitive enzyme research (FINDER) strategy. Biotechnol Bioeng 2021; 118:4360-4374. [PMID: 34309016 DOI: 10.1002/bit.27904] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/23/2021] [Accepted: 07/23/2021] [Indexed: 11/09/2022]
Abstract
Excavating the molecular details of many diverse enzymes from metagenomes remains challenging in agriculture, food, health, and environmental fields. We present a versatile method that accelerates metabolic enzyme discovery for highly selective gene capture in metagenomes using next-generation sequencing. Culture-independent enzyme mining of environmental DNA is based on a set of short identifying degenerate sequences specific for a wide range of enzyme superfamilies, followed by multiplexed DNA barcode sequencing. A strategy of 'focused identification of next-generation sequencing-based definitive enzyme research' enabled us to generate targeted enzyme datasets from metagenomes, resulting in minimal hands-on obtention of high-throughput biological diversity and potential function profiles, without being time-consuming. This method also provided a targeted inventory of predicted proteins and molecular features of metabolic activities from several metagenomic samples. We suggest that the efficiency and sensitivity of this method will accelerate the decryption of microbial diversity and the signature of proteins and their metabolism from environmental samples.
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Affiliation(s)
- Jae-Yoon Sung
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Yong-Jik Lee
- Department of Bio-Cosmetics, Seowon University, Chung-Ju, South Korea
| | - Yong-Joon Cho
- Department of Biological Sciences and Research Institute of Basic Sciences, Seoul National University, Seoul, South Korea
| | - Myeong-Na Shin
- Department of Central Area Crop Science, NICS, RDA, Suwon, South Korea
| | - Sang-Jae Lee
- Major in Food Biotechnology, Silla University, Busan, South Korea
| | - Han-Seung Lee
- Major in Food Biotechnology, Silla University, Busan, South Korea
| | - Hong Koh
- Department of Pediatrics, Yonsei University, Seoul, South Korea
| | - Jin-Woo Bae
- Department of Biology, Kyung Hee University, Seoul, South Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Hyun Jung Kim
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Kim KH, Lee DW, Lee ST. Delayed tooth eruption due to gingival neurofibroma in two children with neurofibromatosis 1. J Paediatr Child Health 2021; 57:1113-1116. [PMID: 32841438 DOI: 10.1111/jpc.15125] [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] [Received: 04/20/2020] [Revised: 07/01/2020] [Accepted: 07/27/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Keun-Hwan Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Dong-Woo Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Sung-Tak Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
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36
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Park HK, Jung J, Lee DW, Shin HC, Lee HJ, Lee WH. A wearable electromyography-controlled functional electrical stimulation system improves balance, gait function, and symmetry in older adults. Technol Health Care 2021; 30:423-435. [PMID: 34180437 DOI: 10.3233/thc-212849] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Wearable technologies have been developed for healthy aging. The technology for electromyography (EMG)-controlled functional electrical stimulation (FES) systems has been developed, but research on how helpful it is in daily life has been insufficient. OBJECTIVE The purpose of this study was to investigate the effect of the EMG-controlled FES system on muscle morphology, balance, and gait in older adults. METHODS Twenty-nine older adults were evaluated under two randomly assigned conditions (non-FES and FES assists). Muscle morphology, balance, gait function, and muscle effort during gait were measured using ultrasonography, a physical test, a gait analysis system, and EMG. RESULTS The EMG-controlled FES system improved gait speed by 11.1% and cadence by 15.6% (P< 0.01). The symmetry ratio of the bilateral gastrocnemius was improved by 9.9% in the stance phase and 11.8% in the swing phase (P< 0.05). The degrees of coactivation of the knee and ankle muscles were reduced by 45.1% and 50.5%, respectively (P< 0.05). Balance improved by 6-10.7% (P< 0.01). CONCLUSION The EMG-controlled FES system is useful for balance and gait function by increasing muscle symmetry and decreasing muscle coactivation during walking in older adults.
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Affiliation(s)
- Hye-Kang Park
- Department of Physical Therapy Graduate School Sahmyook University, Hwarang-ro, Nowon-gu, Seoul, Korea
| | - Joonyoung Jung
- Human Enhancement and Assistive Technology Research Section, Artificial Intelligent Research Laboratory, Electronics and Telecommunications Research Institute, Gajeong-ro, Yuseong-gu, Daejeon, Korea
| | - Dong-Woo Lee
- Human Enhancement and Assistive Technology Research Section, Artificial Intelligent Research Laboratory, Electronics and Telecommunications Research Institute, Gajeong-ro, Yuseong-gu, Daejeon, Korea
| | - Hyung Cheol Shin
- Human Enhancement and Assistive Technology Research Section, Artificial Intelligent Research Laboratory, Electronics and Telecommunications Research Institute, Gajeong-ro, Yuseong-gu, Daejeon, Korea
| | - Hwang-Jae Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Science and Technology (SAIHST), Samsung Medical Center, Sungkyunkwan University, Irwon-ro, Gangnam-gu, Seoul, Korea.,Department of Physical Therapy Graduate School Sahmyook University, Hwarang-ro, Nowon-gu, Seoul, Korea
| | - Wan-Hee Lee
- Department of Physical Therapy, Sahmyook University College of Health Science, Hwarang-ro, Nowon-gu, Seoul, Korea
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Ryoo SB, Park JW, Lee DW, Lee MA, Kwon YH, Kim MJ, Moon SH, Jeong SY, Park KJ. Anterior resection syndrome: a randomized clinical trial of a 5-HT3 receptor antagonist (ramosetron) in male patients with rectal cancer. Br J Surg 2021; 108:644-651. [PMID: 33982068 DOI: 10.1093/bjs/znab071] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/31/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND No effective treatment exists for anterior resection syndrome (ARS) following sphincter-saving surgery for rectal cancer. This RCT assessed the safety and efficacy of a 5-HT3 receptor antagonist, ramosetron, for ARS. METHODS A single-centre, randomized, controlled, open-label, parallel group trial was conducted. Male patients with ARS 1 month after rectal cancer surgery or ileostomy reversal were enrolled and randomly assigned (1 : 1) to 5 μg of ramosetron (Irribow®) daily or conservative treatment for 4 weeks. Low ARS (LARS) score was calculated after randomization and 4 weeks after treatment. The study was designed as a superiority test with a primary endpoint of the proportion of patients with major LARS between the groups. Primary outcome analysis was based on the modified intention-to-treat population. Safety was assessed by monitoring adverse events during the study. RESULTS : A total of 100 patients were randomized to the ramosetron (49 patients) or conservative treatment group (51 patients). Two patients were excluded, and 48 and 50 patients were analysed in the ramosetron and control groups, respectively. The proportion of major LARS after 4 weeks was 58 per cent (28 of 48 patients) in the ramosetron group versus 82 per cent (41 of 50 patients) in the control group, with a difference of 23.7 per cent (95 per cent c.i. 5.58 to 39.98, P = 0.011). There were minor adverse events in five patients, which were hard stool, frequent stool or anal pain. These were not different between the two groups. There were no serious adverse events. CONCLUSION : Ramosetron could be safe and feasible for male patients with ARS. TRIAL REGISTRATION NUMBER NCT02869984 (http://www.clinicaltrials.gov).
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Affiliation(s)
- S-B Ryoo
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - J W Park
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - D W Lee
- Centre for Colorectal Cancer, Research Institute and Hospital, National Cancer Centre, Goyang, Korea
| | - M A Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Y-H Kwon
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - M J Kim
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - S H Moon
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
| | - S-Y Jeong
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - K J Park
- Division of Colorectal Surgery, Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Colorectal Cancer Centre, Seoul National University Cancer Hospital, Seoul, Korea
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Kim SJ, Cho YJ, Lee DW. Patients' first-year adherence to different anti-osteoporotic therapy after hip fractures. Injury 2021; 52:1506-1510. [PMID: 33223260 DOI: 10.1016/j.injury.2020.11.041] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/13/2020] [Accepted: 11/15/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Osteoporosis medication treatment is recommended after geriatric fractures. However, the percentage of patients receiving anti-osteoporotic treatment after a hip fracture is extremely low. OBJECTIVES The aim of this study was to evaluate the adherence to different anti-osteoporotic medications in elderly patients following hip fracture. METHODS This retrospective study included 520 patients treated with osteoporotic hip fracture between March 2014 and June 2019. The patients were asked to choose the medication for osteoporosis treatment at discharge. Adherence was monitored by follow-up visits to the outpatient clinic at 1 year following surgery. RESULTS Of 520 patients with baseline data, osteoporosis medications were prescribed to 250 (48.1%) patients. Of these patients, 110 (44.0%) took subcutaneous denosumab, 69 (27.6%) took oral selective estrogen receptor modulator, 55 (21.0%) took intravenous bisphosphonate. At 12 months, we followed up 178 (71.2%) patients. Of those prescribed a bone protection medication, only 85 patients (34.0%) reported still taking their medication 1 year later. The rate of adherence to 6-month subcutaneous denosumab injection was significantly higher than that for quarterly intravenous bisphosphonates (p = 0.024) or daily oral tablets (p = 0.028). CONCLUSIONS This study revealed patients' adherence for osteoporosis treatments after hip fracture. 6-month subcutaneous denosumab injection was preferred over 3-month intravenous injection or daily oral tablets in this elderly population and exhibited significant lower discontinuation rates. However, because of the limited power of the study, further research is required to identify the reasons behind non-adherence and to improve adherence to anti-osteoporosis medications.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, Hanil General Hospital 308 Uicheon-ro, Dobong-Gu, Seoul 132-703, Korea.
| | - Yun Jae Cho
- Department of Orthopaedics, Hanil General Hospital 308 Uicheon-ro, Dobong-Gu, Seoul 132-703, Korea.
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil General Hospital 308 Uicheon-ro, Dobong-Gu, Seoul 132-703, Korea.
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Kim SJ, Park HS, Lee DW. Outcome of nonoperative treatment for hip fractures in elderly patients: A systematic review of recent literature. J Orthop Surg (Hong Kong) 2021; 28:2309499020936848. [PMID: 32638635 DOI: 10.1177/2309499020936848] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Many studies have shown that surgical management still leads to the best outcomes in elderly patients with hip fractures, with some studies showing non-inferiority of nonsurgical management as compared to surgery in fragility fractures. Evidence-based guidelines on whether to operate on these patients are lacking. A systematic literature search was conducted regarding outcomes of nonoperatively treated hip fractures in elderly patients with various comorbidities. A structured literature review of multiple databases (PubMed, Web of Science, EMBASE, and Cochrane library) referenced articles from 2000 to 2020. A total of 596 patients from 11 published studies were identified. Mean age was 83.3 years. Overall 328 (69.7%) complications occurred in 470 patients with nonsurgical treatment. Pneumonia and urinary tract infections were the most common complications which occurred in 53 (16.1%) and 46 (14.0%) patients, respectively. Hip fracture patients who were treated nonoperatively had a higher in-hospital (17.1% vs. 4.4%; p < 0.001), 30-day (31.4% vs. 10.2%; p < 0.001), and 1-year (48.5% vs. 19.9%; p < 0.001) mortality compared to a matched group of operatively treated patients (n = 1464). Of the 110 patients whose reported cause of death was nonoperative care, 44 (40%) was due to pneumonia. Patients with nonoperative treatment following hip fracture were associated with substantially higher complication and mortality compared with patients who were treated operatively. Our study will help health-care providers and caregivers to enable more informed decision-making for families and patients confronted with a hip fracture.
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Affiliation(s)
- Seung-Ju Kim
- Department of Orthopaedics, Hanil General Hospital, 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
| | - Hyun-Soo Park
- Department of Orthopaedics, Hanil General Hospital, 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
| | - Dong-Woo Lee
- Department of Orthopaedics, Hanil General Hospital, 308 Uicheon-ro, Dobong-Gu, Seoul, Korea
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Kim SK, Park KD, Lee DW. Editorial: Interactions Between Small Molecule Ligands and Target Enzymes. Front Mol Biosci 2021; 8:649450. [PMID: 33748190 PMCID: PMC7973207 DOI: 10.3389/fmolb.2021.649450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/20/2021] [Indexed: 11/25/2022] Open
Affiliation(s)
- Sung-Kun Kim
- Department of Natural Sciences, Northeastern State University, Broken Arrow, OK, United States
| | - Ki Duk Park
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Dhanasingh I, Sung JY, La JW, Kang E, Lee DW, Lee SH. Structure of oxidized pyrrolidone carboxypeptidase from Fervidobacterium islandicum AW-1 reveals unique structural features for thermostability and keratinolysis. Biochem Biophys Res Commun 2021; 540:101-107. [PMID: 33460839 DOI: 10.1016/j.bbrc.2020.12.056] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 12/17/2020] [Indexed: 11/30/2022]
Abstract
Pyrrolidone carboxypeptidases (Pcps) (E.C. 3.4.19.3) can cleave the peptide bond adjacent to pyro-glutamic acid (pGlu), an N-terminal modification observed in some proteins that provides protection against common proteases. Pcp derived from extremely thermophilic Fervidobacterium islandicum AW-1 (FiPcp), that belongs to the cysteine protease family, is involved in keratin utilization under stress conditions. Although an irreversible oxidative modification of active cysteine to its sulfonic acid derivative (Cys-SO3H) renders the enzyme inactive, the molecular details for the sulfonic acid modification in inactive Pcp remain unclear. Here, we determined the crystal structure of FiPcp at 1.85 Å, revealing the oxidized form of cysteine sulfonic acid (C156-SO3H) in the catalytic triad (His-Cys-Glu), which participates in the hydrolysis of pGlu residue containing peptide bond. The three oxygen atoms of cysteine sulfonic acid were stabilized by hydrogen bonds with H180, carbonyl backbone of Q83, and water molecules, resulting in inactivation of FiPcp. Furthermore, FiPcp demonstrated a unique 139KKKK142 motif involved in inter-subunit electrostatic interactions whose mutation significantly affects the thermostability of tetrameric FiPcp. Thus, our high-resolution structure of the first inactive FiPcp with irreversible oxidative modification of active cysteine provides not only the molecular basis of the redox-dependent catalysis of Pcp, but also the structural features of its thermostability.
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Affiliation(s)
- Immanuel Dhanasingh
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju, 501-759, Republic of Korea
| | - Jae-Yoon Sung
- Department of Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jae Won La
- Department of Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Eunju Kang
- NEWTREE Co., Ltd., Seoul, 05604, Republic of Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sung Haeng Lee
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju, 501-759, Republic of Korea.
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La JW, Dhanasingh I, Jang H, Lee SH, Lee DW. Functional Characterization of Primordial Protein Repair Enzyme M38 Metallo-Peptidase From Fervidobacterium islandicum AW-1. Front Mol Biosci 2021; 7:600634. [PMID: 33392259 PMCID: PMC7774594 DOI: 10.3389/fmolb.2020.600634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/25/2020] [Indexed: 12/02/2022] Open
Abstract
The NA23_RS08100 gene of Fervidobacterium islandicum AW-1 encodes a keratin-degrading β-aspartyl peptidase (FiBAP) that is highly expressed under starvation conditions. Herein, we expressed the gene in Escherichia coli, purified the recombinant enzyme to homogeneity, and investigated its function. The 318 kDa recombinant FiBAP enzyme exhibited maximal activity at 80°C and pH 7.0 in the presence of Zn2+. Size-exclusion chromatography revealed that the native enzyme is an octamer comprising a tetramer of dimers; this was further supported by determination of its crystal structure at 2.6 Å resolution. Consistently, the structure of FiBAP revealed three additional salt bridges in each dimer, involving 12 ionic interactions that might contribute to its high thermostability. In addition, the co-crystal structure containing the substrate analog N-carbobenzoxy-β-Asp-Leu at 2.7 Å resolution revealed binuclear Zn2+-mediated substrate binding, suggesting that FiBAP is a hyperthermophilic type-I IadA, in accordance with sequence-based phylogenetic analysis. Indeed, complementation of a Leu auxotrophic E. coli mutant strain (ΔiadA and ΔleuB) with FiBAP enabled the mutant strain to grow on isoAsp-Leu peptides. Remarkably, LC-MS/MS analysis of soluble keratin hydrolysates revealed that FiBAP not only cleaves the C-terminus of isoAsp residues but also has a relatively broad substrate specificity toward α-peptide bonds. Moreover, heat shock-induced protein aggregates retarded bacterial growth, but expression of BAP alleviated the growth defect by degrading damaged proteins. Taken together, these results suggest that the viability of hyperthermophiles under stressful conditions may rely on the activity of BAP within cellular protein repair systems.
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Affiliation(s)
- Jae Won La
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Immanuel Dhanasingh
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju, South Korea
| | - Hyeonha Jang
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Sung Haeng Lee
- Department of Cellular and Molecular Medicine, Chosun University School of Medicine, Gwangju, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Kim MW, Kim DY, Lee DW, Ryoo DH, Kim J, Jang DH. Concurrence of Congenital Muscular Torticollis and Congenital Torticollis Due to Other Anomalies: Two Case Reports. Front Pediatr 2021; 9:709616. [PMID: 34778123 PMCID: PMC8578520 DOI: 10.3389/fped.2021.709616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022] Open
Abstract
Introduction: Congenital muscular torticollis (CMT) is the most common cause of torticollis in infants; other causes, including osseous, ocular, and central nervous system torticollis can easily be overlooked. We report two rare cases of CMT with concurrent osseous or ocular torticollis. Case 1: A 1-month-old female infant with a right neck mass and right-tilting head posture was referred. Neck ultrasonography showed diffuse hypertrophy and hyperechoic findings on the right sternocleidomastoid (SCM) muscle, which was consistent with right CMT. A clavicle X-ray imaging was conducted to identify an associated fracture due to birth trauma on the same day and a suspected congenital vertebral anomaly was coincidentally found. Subsequent three-dimensional computed tomography of the cervical spine showed a T1 hemivertebra causing the right-tilting head. The patient was diagnosed with the concurrent manifestation of CMT and congenital osseous torticollis. Case 2: A 3-month-old male infant with a 20° head tilt to the right with a limited cervical range of motion was referred. Neck ultrasonography showed a fibromatosis colli in the right SCM, suggesting CMT. He proceeded to physical therapy for seven months; however, there was little clinical improvement in his head and neck posture. The patient underwent an additional ophthalmologic examination and orbital magnetic resonance imaging (MRI) at 10 months of age. The result showed congenital agenesis of the left fourth cranial nerve with hypoplasia of the superior oblique muscle causing the right-tilting of the head. Ultimately, the boy was diagnosed with a concurrent manifestation of CMT and congenital ocular torticollis. Conclusion: Unless careful examinations are conducted, congenital vertebral anomalies and congenital agenesis of the fourth cranial nerve can go unnoticed in the present two cases. If a patient with CMT displays unusual features or does not respond to physical therapy, clinicians should consider not only a differential diagnosis but also concurrence with other causes of congenital torticollis.
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Affiliation(s)
- Min-Wook Kim
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Da-Ye Kim
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Da-Hye Ryoo
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Jaewon Kim
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Dae-Hyun Jang
- Department of Rehabilitation Medicine, College of Medicine, Incheon St Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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Kim J, Lee DW, Jang DH. Case Report: Pansynostosis, Chiari I Malformation and Syringomyelia in a Child With Frontometaphyseal Dysplasia 1. Front Pediatr 2021; 9:574402. [PMID: 34277511 PMCID: PMC8280522 DOI: 10.3389/fped.2021.574402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/08/2021] [Indexed: 11/13/2022] Open
Abstract
Frontometaphyseal dysplasia 1 (FMD1) is a rare otopalatodigital spectrum disorder (OPDSD) that is inherited as an X-linked trait and it is caused by gain-of-function mutations in the FLNA. It is characterized by generalized skeletal dysplasia, and craniofacial abnormalities including facial dysmorphism (supraorbital hyperostosis, hypertelorism, and down-slanting palpebral fissures). The involvement of the central nervous system in patients with OPDSD is rare. Herein, we present the case of a 12-year-old boy with facial dysmorphism, multiple joint contractures, sensorineural hearing loss, scoliosis, craniosynostosis, and irregular sclerosis with hyperostosis of the skull. Brain and whole-spine magnetic resonance imaging revealed Chiari I malformation with extensive hydrosyringomyelia from the C1 to T12 levels. Targeted next-generation sequencing identified a hemizygous pathologic variant (c.3557C>T/p.Ser1186Leu) in the FLNA, confirming the diagnosis of FMD1. This is the first report of a rare case of OPDSD with pansynostosis and Chiari I malformation accompanied by extensive syringomyelia.
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Affiliation(s)
- Jaewon Kim
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Dae-Hyun Jang
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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Kim J, Lee DW, Jang JH, Kim M, Yim J, Jang DH. Case Report: Co-occurrence of Duchenne Muscular Dystrophy and Frontometaphyseal Dysplasia 1. Front Pediatr 2021; 9:628190. [PMID: 33718301 PMCID: PMC7952453 DOI: 10.3389/fped.2021.628190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 02/08/2021] [Indexed: 12/02/2022] Open
Abstract
Herein, we present a rare case of co-occurring Duchenne muscular dystrophy (DMD) and frontometaphyseal dysplasia 1 (FMD1), two different X-linked diseases, in a 7-year-old boy. He presented with proximal muscle weakness and elevated creatine phosphokinase levels. A multiplex ligation-dependent probe amplification study of DMD revealed the de novo duplications of exons 2-37, thereby confirming the diagnosis of DMD. Initial evaluation revealed atypical features, such as facial dysmorphism, multiple joint contractures, and severe scoliosis, at an early age. However, these were overlooked and were assumed to be atypical manifestations of DMD. Then, the patient's maternal cousin was diagnosed with FMD1 with pathogenic missense variant in FLNA (NM_001110556.2: c.3557C>T/p.Ser1186Leu). A family genetic test revealed that the patient and his mother had the same pathogenic variant in FLNA. The patient's atypical manifestations were considered symptoms of FMD1. Therefore, if one disease does not fully explain the patient's clinical features, an expanded genetic study is needed to detect coincidental disease.
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Affiliation(s)
- Jaewon Kim
- Department of Rehabilitation Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Dong-Woo Lee
- Department of Rehabilitation Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Ja-Hyun Jang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Myungshin Kim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jisook Yim
- Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Dae-Hyun Jang
- Department of Rehabilitation Medicine, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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Kim WH, Kim BS, Chang SM, Lee DW, Bae JN. Relationship between subjective memory complaint and executive function in a community sample of South Korean elderly. Psychogeriatrics 2020; 20:850-857. [PMID: 32808460 DOI: 10.1111/psyg.12592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 06/08/2020] [Accepted: 06/26/2020] [Indexed: 12/20/2022]
Abstract
AIM The aim of this study was to investigate the association between subjective memory complaint (SMC) and executive function in a community sample of South Korean elderly. METHOD Data for 1442 non-cognitive impaired elderly individuals aged 65 and over were selected from a nationwide dementia epidemiological study conducted in South Korea. Global cognitive function was assessed by the Korean version of the Mini-Mental State Examination (MMSE-KC). The registration and recall subscales of the MMSE were used for evaluating memory function. Executive function was measured by using the Initiation/Perseveration (IP) subscale of the Korean dementia rating scale (K-DRS). RESULTS Of the 1442 participants, 1088 were in the normal control group and 354 were in the SMC group. In the SMC group, compared to the normal control group, the proportion of depression was significantly higher, total MMSE scores, delayed recall score and total IP scores were significantly lower, and the mean scores of complex/simple verbal IP, alternating movements, and graphomotor design were lower. In the unadjusted linear regression model, the SMC significantly associated with a lower score of total MMSE-KC, MMSE delayed recall, K-DRS IP, complex/simple verbal IP, alternating movements and graphomotor design. After adjusting for age, gender, education, marital status, alcohol consumption, smoking behaviour, and depression, the SMC were significantly associated with lower total MMSE score, MMSE delayed recall, K-DRS IP, and K-DRS complex/simple verbal IP. CONCLUSION In this population-based sample, individuals with SMC had evidence of lower performance on global cognition, memory function, and executive function, especially verbal fluency, after adjusting for demographic variables and depression.
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Affiliation(s)
- Won-Hyoung Kim
- Department of Psychiatry, Inha University Hospital, Incheon, South Korea
| | - Byung-Soo Kim
- Department of Psychiatry, Kyungpook National University Hospital, Daegu, South Korea
| | - Sung-Man Chang
- Department of Psychiatry, Kyungpook National University Hospital, Daegu, South Korea
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University College of Medicine, Seoul, South Korea
| | - Jae-Nam Bae
- Department of Psychiatry, Inha University Hospital, Incheon, South Korea
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Jin MJ, Kim JS, Lee HS, Kwon YJ, Shim SH, Choi BS, Lee DW, Paik JW, Lee BC, Jung SW, Lee HY. The Impact of Emotional Exhaustion on Psychological Factors in Workers with Secondary Traumatic Experiences: A Multi-Group Path Analysis. Psychiatry Investig 2020; 17:1064-1072. [PMID: 33190457 PMCID: PMC7711118 DOI: 10.30773/pi.2019.0313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/31/2020] [Accepted: 02/11/2020] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE The objective of the present study was to explore causal pathways to understand how second traumatic experiences could affect the development of emotional exhaustion and psychiatric problems. METHODS A total of 582 workers who had jobs vulnerable to secondary traumatic experiences were enrolled for this study. Emotional exhaustion, secondary trauma, resilience, perceived stress, depression, anxiety, and sleep problems were evaluated. A model with pathways from secondary traumatic experience score to depression and anxiety was proposed. The participants were divided into three groups according to the resilience: the low, middle and high resilience group. RESULTS Resilience was a meaningful moderator between secondary traumatic experiences and psychiatric problems. In the path model, the secondary trauma and perceived stress directly and indirectly predicted perceived stress, emotional exhaustion, depression, anxiety, and sleep problems in all three groups. Direct effects of perceived stress on depression and anxiety were the largest in the low resilience group. However, direct effects of secondary trauma on perceived stress and emotional exhaustion were the largest in the high resilience group. CONCLUSION Understanding the needs of focusing for distinct psychological factors offers a valuable direction for the development of intervention programs to prevent emotional exhaustion among workers with secondary traumatic experiences.
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Affiliation(s)
- Min Jin Jin
- Department of Psychiatry, Wonkwang University Hospital, Iksan, Republic of Korea
- Institute of Liberal Education, Kongju National University, Gongju, Republic of Korea
| | - Ji Sun Kim
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Ho-Sung Lee
- Department of Pulmonology and Allergy, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Young Joon Kwon
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Se Hoon Shim
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - Bum-Sung Choi
- Department of Psychiatry, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Republic of Korea
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Jong-Woo Paik
- Department of Psychiatry, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Boung Chul Lee
- Department of Neuropsychiatry, College of Medicine, Hallym University, Seoul, Republic of Korea
| | - Sung-Won Jung
- Department of Psychiatry, Keimyung University, School of Medicine, Daegu, Republic of Korea
| | - Hwa-Young Lee
- Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
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Akter N, Hashim R, Pham HQ, Choi SD, Lee DW, Shin JH, Rajagopal K. Lactobacillus acidophilus Antimicrobial Peptide Is Antagonistic to Aeromonas hydrophila. Front Microbiol 2020; 11:570851. [PMID: 33162953 PMCID: PMC7581908 DOI: 10.3389/fmicb.2020.570851] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/02/2020] [Indexed: 12/19/2022] Open
Abstract
We identified an antimicrobial peptide (AMP) from Lactobacillus acidophilus that was antagonistic to Aeromonas hydrophila. In vitro studies such as well-diffusion and field trials revealed that the AMP was active against A. hydrophila. The field trials of AMP using A. hydrophila-infected Channa striatus with a mannone oligosaccharide (MOS) prebiotic, A. hydrophila antigens, A. hydrophila-infected fish serum, L. acidophilus, and Lactobacillus cell free-supernatant (LABS-CFS) on an indicator organism further revealed that the antimicrobial agent could protect C. striatus. Other than the AMP, none of the above were able to eliminate the infectious agent A. hydrophila, and were only able to delay the death rate for 3-4 days. Thus, we conclude that the AMP is antagonistic to A. hydrophila and may be used for treatment of A. hydrophila infections. Subsequent L. acidophilus whole-genome sequence analyses enabled an understanding of the (probable) gene arrangement and its location on the chromosome. This information may be useful in the generation of recombinant peptides to produce larger quantities for treatment.
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Affiliation(s)
- Nahid Akter
- Department of Aquaculture, Faculty of Fisheries, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh
- School of Biological sciences, Universiti Sains Malaysia, George Town, Malaysia
| | - Roshada Hashim
- Department of Aquaculture, Faculty of Fisheries, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh
- School of Biological sciences, Universiti Sains Malaysia, George Town, Malaysia
| | - Huy Quang Pham
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, South Korea
| | - Seung-Dae Choi
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, South Korea
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Jae-Ho Shin
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, South Korea
| | - Kammara Rajagopal
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, South Korea
- Department of Protein Chemistry and Technology, CSIR-CFTRI, Mysuru, India
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Park JE, Hong JP, Jeon HJ, Seong SJ, Sohn JH, Ha TH, Lee DW, Park JI, Cho SJ, Chang SM, Kim BS, Suk HW, Cho MJ, Hahm BJ. Age-related differences in the associations among at-risk drinking, alcohol use disorder, and psychological distress across the adult lifespan: a nationwide representative study in South Korea. Soc Psychiatry Psychiatr Epidemiol 2020; 55:1335-1344. [PMID: 32052102 DOI: 10.1007/s00127-020-01845-5] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/03/2020] [Indexed: 12/28/2022]
Abstract
PURPOSE To investigate age-related differences in the relationships among at-risk alcohol consumption, alcohol use disorder (AUD), and psychological distress with a special focus on older adults. METHODS We used a nationwide cross-sectional study of a representative sample of community-dwelling adults from the Korean Epidemiologic Catchment Area study for psychiatric disorders conducted by door-to-door interviews. The Korean version of the Composite International Diagnostic Interview was applied. Subjects were categorized into four age groups: young-to-middle-aged (20-54 years), near-old (55-64 years), early-old (65-74 years), and late-old (≥ 75 years). The associations among at-risk drinking, alcohol use disorder, and psychological distress were examined according to age groups. RESULTS Among a total of 5102 individuals, half of them drank alcohol in the previous year, of whom 20.5% were at-risk drinkers (≥ 100 g/week). Older people were less often diagnosed with AUD than young-to-middle-aged adults with a similar degree of at-risk drinking. They were less likely to meet the DSM-5 AUD criteria in terms of social and vocational role disruption or creation of a physically hazardous situation. However, at-risk drinking showed a stronger association with subjective psychological distress in older adults, particularly in the near-old group (adjusted odds ratio 1.82, 95% confidence interval 1.09-3.03; p = 0.023). CONCLUSIONS These findings indicate the importance of screening for mental health problems in older adults, especially near-old adults, who drink more than 100 g of alcohol per week even when they do not satisfy the criteria for a diagnosis of AUD.
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Affiliation(s)
- Jee Eun Park
- Department of Psychiatry, Seoul National University College of Medicine, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Jin Pyo Hong
- Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hong Jin Jeon
- Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Su Jeong Seong
- Department of Psychiatry, Hallym University Medical Center, Seoul, South Korea
| | - Jee Hoon Sohn
- Department of Psychiatry, Seoul National University College of Medicine, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Tae Hyon Ha
- Department of Psychiatry, Seoul National University Bundang Hospital, Sungnam, South Korea
| | - Dong-Woo Lee
- Department of Psychiatry, Inje University College of Medicine, Seoul, South Korea
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University College of Medicine, Chuncheon, South Korea
| | - Seong-Jin Cho
- Department of Psychiatry, Gachon Medical School, Incheon, South Korea
| | - Sung Man Chang
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Byung-Soo Kim
- Department of Psychiatry, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Hye Won Suk
- Department of Psychology, Sogang University, Seoul, South Korea
| | - Maeng Je Cho
- Department of Psychiatry, Seoul National University College of Medicine, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea
| | - Bong-Jin Hahm
- Department of Psychiatry, Seoul National University College of Medicine, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea.
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50
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Kim JS, Bae JB, Han K, Hong JW, Han JH, Kim TH, Kwak KP, Kim K, Kim BJ, Kim SG, Kim JL, Kim TH, Moon SW, Park JY, Park JH, Byun S, Suh SW, Seo JY, So Y, Ryu SH, Youn JC, Lee KH, Lee DY, Lee DW, Lee SB, Lee JJ, Lee JR, Jeong H, Jeong HG, Jhoo JH, Han JW, Kim KW. Driving-Related Adverse Events in the Elderly Men: A Population-Based Prospective Cohort Study. Psychiatry Investig 2020; 17:744-750. [PMID: 32683838 PMCID: PMC7449837 DOI: 10.30773/pi.2019.0219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 03/18/2020] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE This study estimated the incidence of driving-related adverse events and examined the association of cognitive function with the risk of future driving-related adverse events in the elderly Korean male population. METHODS We analyzed 1,172 male drivers aged 60 years or older in the Korean Longitudinal Study on Cognitive Aging and Dementia (KLOSCAD). Using the data from Korean National Police Agency, we classified the participants into three groups: safe driving (drove for 2 years after baseline without a traffic accident or repeated violations), driving cessation (stopped driving), and risky driving (one or more traffic accidents or repeated violations). We estimated the incidences of driving cessation and risky driving, and examined the effect of cognitive function on their risks. RESULTS The incidence of driving cessation and risky driving in the Korean male drivers aged 60 years or older was 19.3 and 69.9 per 1,000 person-years respectively and increased in the late 80s. Drivers with better baseline Word List Memory Test scores showed less risky driving (OR=0.94, p=0.039). CONCLUSION Driving-related adverse events increased in late 80s, and better memory function was protective against these events.
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Affiliation(s)
- Jae Sung Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Jong Bin Bae
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kyuhee Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Jong Woo Hong
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Ji Hyun Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Tae Hui Kim
- Department of Psychiatry, Yonsei University Wonju Severance Christian Hospital, Wonju, Republic of Korea
| | - Kyung Phil Kwak
- Department of Psychiatry, Dongguk University Gyeongju Hospital, Gyeongju, Republic of Korea
| | - Kayoung Kim
- Department of Psychiatry, National Center for Mental Health, Seoul, Republic of Korea
| | - Bong Jo Kim
- Department of Psychiatry, Gyeongsang National University College of Medicine, Jinju, Republic of Korea
| | - Shin Gyeom Kim
- Department of Neuropsychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Jeong Lan Kim
- Department of Psychiatry, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Tae Hyun Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Seok Woo Moon
- Department of Psychiatry, School of Medicine, Konkuk University, Konkuk University Chungju Hospital, Chungju, Republic of Korea
| | - Jae Young Park
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Joon Hyuk Park
- Department of Neuropsychiatry, Jeju National University Hospital, Jeju, Republic of Korea
| | - Seonjeong Byun
- Department of Neuropsychiatry, National Medical Center, Seoul, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seung Wan Suh
- Department of Psychiatry, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Ji Young Seo
- Department of Psychiatry, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
| | - Yoonseop So
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Seung-Ho Ryu
- Department of Psychiatry, School of Medicine, Konkuk University, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Jong Chul Youn
- Department of Neuropsychiatry, Kyunggi Provincial Hospital for the Elderly, Yongin, Republic of Korea
| | - Kyoung Hwan Lee
- Department of Psychiatry, Bongseng Memorial Hospital, Busan, Republic of Korea
| | - Dong Young Lee
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dong-Woo Lee
- Department of Neuropsychiatry, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Seok Bum Lee
- Department of Psychiatry, Dankook University Hospital, Cheonan, Republic of Korea
| | - Jung Jae Lee
- Department of Psychiatry, Dankook University Hospital, Cheonan, Republic of Korea
| | - Ju Ri Lee
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyeon Jeong
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyun-Ghang Jeong
- Department of Psychiatry, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jin Hyeong Jhoo
- Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Republic of Korea
| | - Ji Won Han
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Ki Woong Kim
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Brain and Cognitive Science, Seoul National University College of Natural Sciences, Seoul, Republic of Korea
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