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Lee SU, Kim SY, Lee JH, Baek JH, Lee JW, Jang HW, Park NG. Artificial Synapse Based on a δ-FAPbI 3/Atomic-Layer-Deposited SnO 2 Bilayer Memristor. Nano Lett 2024. [PMID: 38619226 DOI: 10.1021/acs.nanolett.4c00253] [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] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Halide perovskite-based resistive switching memory (memristor) has potential in an artificial synapse. However, an abrupt switch behavior observed for a formamidinium lead triiodide (FAPbI3)-based memristor is undesirable for an artificial synapse. Here, we report on the δ-FAPbI3/atomic-layer-deposited (ALD)-SnO2 bilayer memristor for gradual analogue resistive switching. In comparison to a single-layer δ-FAPbI3 memristor, the heterojunction δ-FAPbI3/ALD-SnO2 bilayer effectively reduces the current level in the high-resistance state. The analog resistive switching characteristics of δ-FAPbI3/ALD-SnO2 demonstrate exceptional linearity and potentiation/depression performance, resembling an artificial synapse for neuromorphic computing. The nonlinearity of long-term potentiation and long-term depression is notably decreased from 12.26 to 0.60 and from -8.79 to -3.47, respectively. Moreover, the δ-FAPbI3/ALD-SnO2 bilayer achieves a recognition rate of ≤94.04% based on the modified National Institute of Standards and Technology database (MNIST), establishing its potential in an efficient artificial synapse.
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Affiliation(s)
- Sang-Uk Lee
- School of Chemical Engineering, Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - So-Yeon Kim
- School of Chemical Engineering, Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Joo-Hong Lee
- Department of Nano Science and Technology and Department of Nanoengineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ji Hyun Baek
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin-Wook Lee
- Department of Nano Science and Technology and Department of Nanoengineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
| | - Nam-Gyu Park
- School of Chemical Engineering, Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
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Byun YS, Lee SU, Park IJ, Im JH, Hong SA. Comparison of in-situ release and submuscular anterior transposition of ulnar nerve for refractory cubital tunnel syndrome, previously treated with subfascial anterior transfer-A retrospective study of 24 cases. Injury 2023; 54:111061. [PMID: 37832216 DOI: 10.1016/j.injury.2023.111061] [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] [Received: 02/23/2023] [Revised: 09/04/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023]
Abstract
BACKGROUND Although cubital tunnel syndrome is the second most common type of compressive neuropathy in the upper extremities, the indication and optimal surgical method for recurrent or refractory cubital tunnel syndrome remains controversial. This study evaluates the functional outcomes of revision surgery for cubital tunnel syndrome. MATERIAL & METHODS This study was a retrospective observational multicenter single-institution study including 660 patients who underwent surgery for cubital tunnel syndrome from 2010 to 2019. Among the 660 patients, 42(6.4%) received revision surgery due to remaining or recurrent symptoms confirmed with electromyography(EMG). After excluding those with concurrent elbow fracture, dislocation, osteoarthritis and wound infection, a total of 24 patients were included in the study. The patients were evaluated of disease severity, revision surgical method, time interval to recurrence, underlying diseases and postoperative functional outcomes. RESULTS All patients received ulnar nerve subfascial anterior transposition for the initial cubital tunnel syndrome surgery. Among the 24 patients (3.7%) who received revision surgery, nine received in situ neurolysis, 12 received submuscular transposition, and three received subcutaneous transfer. 21 patients (88%) reported improved mean VAS score of 4.3, while three patients complained of remaining symptoms that did not improve even after revision surgery. The patients with remaining symptoms all had underlying diabetes mellitus and were treated with subcutaneous transfer. The difference of surgical outcomes between the in situ neurolysis group and the nerve transfer groups were non-significant (p = 0.23). The most common cause of recurrent or persistent symptoms was adhesion and fibrosis at sling area. The mean follow up period before revision surgery was 26.3 months and postoperative follow up period after revision surgery was 8.5 months. CONCLUSION The outcomes of this study imply that in-situ neurolysis may be as effective as anterior submuscular transfer of ulnar nerve for refractory cubital tunnel syndrome after anterior subfascial transfer.
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Affiliation(s)
- Yung-Seol Byun
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431 South Korea
| | - Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431 South Korea.
| | - Il-Jung Park
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, South Korea
| | - Jin-Hyung Im
- Department of Orthopedic Surgery, Yeouido St. Mary's Hospital, The Catholic University of Korea
| | - Sung-An Hong
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431 South Korea
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Lee SU, Kim Y, Lee Y, Chung KJ. A plasma-based pressure pulse generator for simulating pellet-cladding mechanical interaction during reactivity-initiated accident. Rev Sci Instrum 2023; 94:085103. [PMID: 37540122 DOI: 10.1063/5.0140706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 07/20/2023] [Indexed: 08/05/2023]
Abstract
This paper describes the characteristics of a plasma-based pressure pulse generator and its potential use as a simulator for studying pellet-cladding mechanical interaction (PCMI) during reactivity-initiated accidents (RIAs). In this device, a transient pressure pulse is generated by rapid heating and expansion of hot, dense plasma inside a nuclear fuel cladding. Thus, the parameters of a pressure pulse, such as peak pressure and pressure rise-rate, can be controlled by modifying the electrical parameters of a pulse discharge circuit. The pulse discharge circuit utilizes a capacitor bank comprising several energy storage capacitors connected in parallel and a high-power solid-state switch. A pressure loading system is attached as a load to the pulse discharge circuit. The power and energy delivered to the load are calculated by measuring the voltage and current waveforms at one end of the loading system. A piezoelectric sensor is connected at the other end of the loading system to simultaneously measure the pressure pulse inside the cladding tube. Preliminary experiments are carried out with a stainless-steel tube to characterize the performance of the device as well as with a pre-hydrided ZIRLO™ cladding tube to demonstrate the potential of the device as a simulator for studying the failure characteristics of the cladding as a result of an RIA. The high pressurization rate of the device is expected to offer unique advantages for studying the PCMI mechanism.
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Affiliation(s)
- Sang-Uk Lee
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yuyeon Kim
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Youho Lee
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyoung-Jae Chung
- Department of Nuclear Engineering, Seoul National University, Seoul 08826, Republic of Korea
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Al Azzawi TN, Khan M, Mun BG, Lee SU, Imran M, Hussain A, Rolly NK, Lee DS, Ali S, Lee IJ, Yun BW. Enhanced Resistance of atnigr1 against Pseudomonas syringae pv. tomato Suggests Negative Regulation of Plant Basal Defense and Systemic Acquired Resistance by AtNIGR1 Encoding NAD(P)-Binding Rossmann-Fold in Arabidopsis thaliana. Antioxidants (Basel) 2023; 12:antiox12050989. [PMID: 37237855 DOI: 10.3390/antiox12050989] [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: 02/13/2023] [Revised: 04/15/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023] Open
Abstract
Nitric oxide (NO) regulates several biological and physiological processes in plants. This study investigated the role of Arabidopsis thaliana Negative Immune and Growth Regulator 1 (AtNIGR1), encoding an NAD(P)-binding Rossmann-fold superfamily, in the growth and immunity of Arabidopsis thaliana. AtNIGR1 was pooled from the CySNO transcriptome as a NO-responsive gene. Seeds of the knockout (atnigr1) and overexpression plants were evaluated for their response to oxidative [(hydrogen peroxide (H2O2) and methyl viologen (MV)] or nitro-oxidative [(S-nitroso-L-cysteine (CySNO) and S-nitroso glutathione (GSNO)] stress. Results showed that the root and shoot growth of atnigr1 (KO) and AtNIGR1 (OE) exhibited differential phenotypic responses under oxidative and nitro-oxidative stress and normal growth conditions. To investigate the role of the target gene in plant immunity, the biotrophic bacterial pathogen Pseudomonas syringae pv. tomato DC3000 virulent (Pst DC3000 vir) was used to assess the basal defense, while the Pst DC3000 avirulent (avrB) strain was used to investigate R-gene-mediated resistance and systemic acquired resistance (SAR). Data revealed that AtNIGR1 negatively regulated basal defense, R-gene-mediated resistance, and SAR. Furthermore, the Arabidopsis eFP browser indicated that the expression of AtNIGR1 is detected in several plant organs, with the highest expression observed in germinating seeds. All results put together suggest that AtNIGR1 could be involved in plant growth, as well as basal defense and SAR, in response to bacterial pathogens in Arabidopsis.
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Affiliation(s)
- Tiba Nazar Al Azzawi
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Murtaza Khan
- Department of Horticulture and Life Sciences, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Bong-Gyu Mun
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sang-Uk Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Muhammad Imran
- Biosafety Division, National Institute of Agriculture Science, Rural Development Administration, Jeonju 55365, Republic of Korea
| | - Adil Hussain
- Department of Entomology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Nkulu Kabange Rolly
- Department of Southern Area of Crop Science, National Institute of Crop Science, RDA, Miryang 50424, Republic of Korea
| | - Da-Sol Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sajid Ali
- Department of Horticulture and Life Sciences, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Byung-Wook Yun
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
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Lee SU, Park H, Shin H, Park NG. Atomic layer deposition of SnO 2 using hydrogen peroxide improves the efficiency and stability of perovskite solar cells. Nanoscale 2023; 15:5044-5052. [PMID: 36804638 DOI: 10.1039/d2nr06884b] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Low-temperature processed SnO2 is a promising electron transporting layer in perovskite solar cells (PSCs) due to its optoelectronic advantage. Atomic layer deposition (ALD) is suitable for forming a conformal SnO2 layer on a high-haze substrate. However, oxygen vacancy formed by the conventional ALD process using H2O might have a detrimental effect on the efficiency and stability of PSCs. Here, we report on the photovoltaic performance and stability of PSCs based on the ALD-SnO2 layer with low oxygen vacancies fabricated via H2O2. Compared to the ALD-SnO2 layer formed using H2O vapors, the ALD-SnO2 layer prepared via H2O2 shows better electron extraction due to a reduced oxygen vacancy associated with the highly oxidizing nature of H2O2. As a result, the power conversion efficiency (PCE) is enhanced from 21.42% for H2O to 22.34% for H2O2 mainly due to an enhanced open-circuit voltage. Operational stability is simultaneously improved, where 89.3% of the initial PCE is maintained after 1000 h under an ambient condition for the H2O2-derived ALD SnO2 as compared to the control device maintaining 72.5% of the initial PCE.
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Affiliation(s)
- Sang-Uk Lee
- School of Chemical Engineering, Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Hyoungmin Park
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyunjung Shin
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Nam-Gyu Park
- School of Chemical Engineering, Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea.
- SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
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Lee SU, Lee SH, So AH, Park JI, Lee S, Oh IH, Oh CM. Association between benign prostatic hyperplasia and suicide in South Korea: A nationwide retrospective cohort study. PLoS One 2022; 17:e0265060. [PMID: 35271681 PMCID: PMC8912228 DOI: 10.1371/journal.pone.0265060] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 02/22/2022] [Indexed: 01/21/2023] Open
Abstract
Benign prostatic hyperplasia is a commonly diagnosed disease in elderly men, but elderly men with benign prostatic hyperplasia are more likely to have a lower quality of life and depressive symptoms. This study aims to examine the association benign prostatic hyperplasia patients with suicide death relative to a control group comprising individuals without benign prostatic hyperplasia. We used the Korean National Health Insurance Service-National Sample Cohort from 2006 to 2015 comprising of 193,785 Korean adults ≥40 years old, and followed-up for suicide death during the 8.7 years period. Cox-proportional hazard model was used to estimate hazard ratios for suicide among patients with benign prostatic hyperplasia. From 2006 to 2010, a total of 32,215 people were newly diagnosed with benign prostatic hyperplasia. The suicide rate of people without benign prostatic hyperplasia was 61.6 per 100,000 person-years, whereas that of patients with benign prostatic hyperplasia was 97.3 per 100,000 person-years, 1.58 times higher than the control group (p<0.01). After adjusting for covariates, the hazard ratio for suicide among patients with benign prostatic hyperplasia was 1.47 (95% C.I. = 1.21 to 1.78; p<0.01) compared to people without benign prostatic hyperplasia. For men without mental disorders, the hazard ratio for suicide among patients with benign prostatic hyperplasia was 1.36 (95% CI = 1.05 to 1.76) compared to control group after adjusting for multiple covariates. Our study suggests that men with benign prostatic hyperplasia had a higher probability of suicide compared to men without benign prostatic hyperplasia in South Korea. This study suggests that physicians may be aware that men newly diagnosed with benign prostatic hyperplasia had high probability of suicide.
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, Republic of Korea
| | - Sang Hyub Lee
- Department of Urology, Kyung Hee University, Seoul, Republic of Korea
| | - Ah-Hyun So
- Department of Mental Health Research, National Center for Mental Health, Seoul, Republic of Korea
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University, School of Medicine, Chunchon, Republic of Korea
| | - Soojung Lee
- College of Nursing, Woosuk University, Wanjoo, Republic of Korea
| | - In-Hwan Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Chang-Mo Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
- * E-mail:
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Jeong C, Lee SU, Kim HG, Joo SY. Medial Epicondyle Fracture in Children and Its Association with Increased Carrying Angle. Int J Clin Pract 2022; 2022:6414247. [PMID: 35685497 PMCID: PMC9159189 DOI: 10.1155/2022/6414247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND This study aimed to evaluate the injury mechanism of medial epicondylar fractures in children and adolescents and its association with increased carrying angle (CA) as a predisposing factor. MATERIALS AND METHODS We evaluated 37 patients with medial epicondylar fractures who were surgically treated at our institution. Medical records and plain radiographs were reviewed to determine the mechanism of injury and the humerus-elbow-wrist angle (HEWA) and CA of the uninjured arm. To evaluate the effect of coronal alignment on specific fracture type, we compared the CA and HEWA of the 23 patients with medial epicondylar fracture who were injured by falling onto an outstretched hand (group I) with age- and sex-matched controls of 23 patients who had sustained extension-type supracondylar fractures (group II). RESULTS The mean age at injury was 11.7 ± 2.8 years (range, 5 to 16 years). Of the 37 patients, 23 (62.2%) recalled the injury mechanism as falling onto an outstretched hand and 10 patients (27.0%) were injured while arm wrestling, and in one patient (2.7%), the injury was associated with elbow dislocation. In the case-matched analysis, the mean HEWA of group I was 13.1 ± 2.8° (range, 7.1° to 19.8°) and the mean CA was 17.7 ± 2.7° (range, 13.0° to 22.2°). These angles were significantly increased in group I (p=0.003 and p=0.001, respectively). CONCLUSION Falling onto an outstretched hand is the most common injury mechanism in patients with medial epicondylar fractures, and these fractures are associated with an increased CA.
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Affiliation(s)
- Changhoon Jeong
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Gyun Kim
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sun Young Joo
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Lee YS, Lee SU, Hong TM, Joo SY. Prevalence of Vitamin D Deficiency in Children with Fractures: Before and during the COVID-19 Outbreak. Int J Clin Pract 2022; 2022:4410032. [PMID: 35821700 PMCID: PMC9226975 DOI: 10.1155/2022/4410032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/27/2022] [Accepted: 06/07/2022] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Although it is generally agreed that vitamin D is important for bone health, the role of vitamin D in preventing fractures in children and adolescents remains unclear. Therefore, this study aimed to investigate the prevalence of vitamin D deficiency and insufficiency in healthy Korean children with fractures. Our secondary aim was to compare serum vitamin D levels before and during the coronavirus disease 2019 (COVID-19) outbreak. METHODS We evaluated 334 patients with fractures who were surgically treated at our institution between 2018 and 2019 before the onset of COVID-19 (group I). In addition, we collected data on the serum 25(OH)D levels of 210 patients who visited our pediatric department for evaluation of short stature (group II) and the serum 25(OH)D levels of the patients with fractures during the COVID-19 pandemic period (group III). A serum 25(OH)D level of <20 ng/mL was considered deficient, between 20 and 32 ng/mL was insufficient, and ≥32 ng/mL was considered sufficient. RESULTS The mean age was 8.1 ± 3.5 years in group I, 8.2 ± 3.7 years in group II, and 8.6 ± 3.5 years in group III. The prevalence of vitamin D deficiency was 53.0% in group I and 32.9% in group II. The mean serum 25(OH)D level was lower in group I than in group II (20.0 ± 7.3 ng/ml vs. 23.2 ± 6.9 ng/ml, p < 0.001). The mean serum 25(OH)D level of younger patients (<10 years) in group III was lower than that of the younger patients in the prepandemic period (21.4 ± 7.2 ng/mL vs. 19.2 ± 6.8 ng/mL, p=0.037). CONCLUSIONS We observed a high prevalence of vitamin D deficiency/insufficiency in children with fractures who required surgical treatment. During the COVID-19 pandemic, the serum vitamin D levels became even lower, especially in younger children.
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Affiliation(s)
- Yong-Suk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Tae Min Hong
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sun Young Joo
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Lee SU, Mun BG, Bae EK, Kim JY, Kim HH, Shahid M, Choi YI, Hussain A, Yun BW. Drought Stress-Mediated Transcriptome Profile Reveals NCED as a Key Player Modulating Drought Tolerance in Populus davidiana. Front Plant Sci 2021; 12:755539. [PMID: 34777433 PMCID: PMC8581814 DOI: 10.3389/fpls.2021.755539] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Populus trichocarpa has been studied as a model poplar species through biomolecular approaches and was the first tree species to be genome sequenced. In this study, we employed a high throughput RNA-sequencing (RNA-seq) mediated leaf transcriptome analysis to investigate the response of four different Populus davidiana cultivars to drought stress. Following the RNA-seq, we compared the transcriptome profiles and identified two differentially expressed genes (DEGs) with contrasting expression patterns in the drought-sensitive and tolerant groups, i.e., upregulated in the drought-tolerant P. davidiana groups but downregulated in the sensitive group. Both these genes encode a 9-cis-epoxycarotenoid dioxygenase (NCED), a key enzyme required for abscisic acid (ABA) biosynthesis. The high-performance liquid chromatography (HPLC) measurements showed a significantly higher ABA accumulation in the cultivars of the drought-tolerant group following dehydration. The Arabidopsis nced3 loss-of-function mutants showed a significantly higher sensitivity to drought stress, ~90% of these plants died after 9 days of drought stress treatment. The real-time PCR analysis of several key genes indicated a strict regulation of drought stress at the transcriptional level in the P. davidiana drought-tolerant cultivars. The transgenic P. davidiana NCED3 overexpressing (OE) plants were significantly more tolerant to drought stress as compared with the NCED knock-down RNA interference (RNAi) lines. Further, the NCED OE plants accumulated a significantly higher quantity of ABA and exhibited strict regulation of drought stress at the transcriptional level. Furthermore, we identified several key differences in the amino acid sequence, predicted structure, and co-factor/ligand binding activity of NCED3 between drought-tolerant and susceptible P. davidiana cultivars. Here, we presented the first evidence of the significant role of NCED genes in regulating ABA-dependent drought stress responses in the forest tree P. davidiana and uncovered the molecular basis of NCED3 evolution associated with increased drought tolerance.
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Affiliation(s)
- Sang-Uk Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Bong-Gyu Mun
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Eun-Kyung Bae
- Forest Microbiology Division, National Institute of Forest Science, Suwon-si, South Korea
| | - Jae-Young Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Hyun-Ho Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Muhammad Shahid
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
- Agriculture Research Institute, Mingora, Swat, Pakistan
| | - Young-Im Choi
- Forest Biotechnology Division, National Institute of Forest Science, Suwon-si, South Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
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Chae HB, Kim MG, Kang CH, Park JH, Lee ES, Lee SU, Chi YH, Paeng SK, Bae SB, Wi SD, Yun BW, Kim WY, Yun DJ, Mackey D, Lee SY. Redox sensor QSOX1 regulates plant immunity by targeting GSNOR to modulate ROS generation. Mol Plant 2021; 14:1312-1327. [PMID: 33962063 DOI: 10.1016/j.molp.2021.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 02/25/2021] [Accepted: 05/03/2021] [Indexed: 05/22/2023]
Abstract
Reactive oxygen signaling regulates numerous biological processes, including stress responses in plants. Redox sensors transduce reactive oxygen signals into cellular responses. Here, we present biochemical evidence that a plant quiescin sulfhydryl oxidase homolog (QSOX1) is a redox sensor that negatively regulates plant immunity against a bacterial pathogen. The expression level of QSOX1 is inversely correlated with pathogen-induced reactive oxygen species (ROS) accumulation. Interestingly, QSOX1 both senses and regulates ROS levels by interactingn with and mediating redox regulation of S-nitrosoglutathione reductase, which, consistent with previous findings, influences reactive nitrogen-mediated regulation of ROS generation. Collectively, our data indicate that QSOX1 is a redox sensor that negatively regulates plant immunity by linking reactive oxygen and reactive nitrogen signaling to limit ROS production.
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Affiliation(s)
- Ho Byoung Chae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Min Gab Kim
- College of Pharmacy, Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju 52828, Korea
| | - Chang Ho Kang
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Joung Hun Park
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Eun Seon Lee
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Sang-Uk Lee
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
| | - Yong Hun Chi
- Plant Propagation Team, Plant Production Division, Sejong National Arboretum, Sejong 30106, Korea
| | - Seol Ki Paeng
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Su Bin Bae
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Seong Dong Wi
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Byung-Wook Yun
- School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
| | - Woe-Yeon Kim
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea
| | - Dae-Jin Yun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Korea
| | - David Mackey
- Department of Horticulture and Crop Science, Department of Molecular Genetics, and Center for Applied Plant Sciences, The Ohio State University, Columbus, OH 43210, USA.
| | - Sang Yeol Lee
- Division of Applied Life Sciences (BK21) and PMBBRC, Gyeongsang National University, Jinju 52828, Korea; College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, P.R. China.
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11
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Lee SU, Lee HJ, Kim YS. The effectiveness of ramosetron and ondansetron for preventing postoperative nausea and vomiting after arthroscopic rotator cuff repair: a randomized controlled trial. J Orthop Surg Res 2020; 15:523. [PMID: 33176845 PMCID: PMC7659046 DOI: 10.1186/s13018-020-02060-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/02/2020] [Indexed: 11/10/2022] Open
Abstract
Background Arthroscopic rotator cuff repair is a painful procedure, and treatment of emetic events associated with drugs used in the current multimodal pain management remains challenging. This study aimed to evaluate the effectiveness of ramosetron or ondansetron to relieve postoperative nausea and vomiting (PONV) and pain after arthroscopic rotator cuff repair. Methods In total, 122 consecutive patients undergoing arthroscopic rotator cuff repair were randomly allocated into three groups: ramosetron group (n = 39), ondansetron group (n = 43), and control group (n = 40). Then, 0.3 mg of ramosetron or 8 mg of ondansetron was administered intravenously at the end of surgery according to group. All patients received general anesthesia and multimodal pain management protocol including preemptive analgesic medication, fentanyl-based intravenous patient-controlled analgesia, and postoperative analgesic medication. Incidence of emetic events, rescue antiemetic requirements (10 mg of metoclopramide, IV), complete response, pain level, and side effects were recorded in three periods: 0–6, 6–24, and 24–48 h postoperatively. The severity of nausea and pain was evaluated using a visual analog scale. Results The ramosetron group tended to have a lower incidence and severity of nausea during the 6- to 24-h postoperative period and fewer rescue antiemetic drug requirements during the 0- to 48-h period than the control group, showing statistical significance. Additionally, the frequency of complete response of the ramosetron and ondansetron groups was significantly higher than that of the control group. No difference was found among the groups in the pain level except during the 0- to 6-h period. The two groups have a higher complete response during the 6- to 24-h period than the control group. Conclusions Ramosetron use led to a lower incidence, mild severity of nausea, and reduced use of rescue antiemetic drug after arthroscopic rotator cuff repair during the 6- to 24-h postoperative period than the control. Level of evidence Level I, randomized controlled trials, treatment study
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Hyo-Jin Lee
- Department of Orthopedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, Republic of Korea
| | - Yang-Soo Kim
- Department of Orthopedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, Republic of Korea.
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12
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Rolly NK, Imran QM, Shahid M, Imran M, Khan M, Lee SU, Hussain A, Lee IJ, Yun BW. Drought-induced AtbZIP62 transcription factor regulates drought stress response in Arabidopsis. Plant Physiol Biochem 2020; 156:384-395. [PMID: 33007532 DOI: 10.1016/j.plaphy.2020.09.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 09/09/2020] [Indexed: 06/11/2023]
Abstract
We investigated the role of AtbZIP62, an uncharacterized Arabidopsis bZIP TF, in oxidative, nitro-oxidative and drought stress conditions using reverse genetics approach. We further monitored the expression of AtPYD1 gene (orthologous to rice OsDHODH1 involved in the pyrimidine biosynthesis) in atbzip62 knock-out (KO) plants in order to investigate the transcriptional interplay of AtbZIP62 and AtPYD1. The atbzip62 KO plants showed significant increase in shoot length under oxidative stress, while no significant difference was recorded for root length compared to WT. However, under nitro-oxidative stress conditions, atbzip62 showed differential response to both NO-donors. Further characterization of AtbZIP62 under drought conditions showed that both atbzip62 and atpyd1-2 showed a sensitive phenotype to drought stress, and could not recover after re-watering. Transcript accumulation of AtbZIP62 and AtPYD1 showed that both were highly up-regulated by drought stress in wild type (WT) plants. Interestingly, AtPYD1 transcriptional level significantly decreased in atbzip62 exposed to drought stress. However, AtbZIP62 expression was highly induced in atpyd1-2 under the same conditions. Both AtbZIP62 and AtPYD1 were up-regulated in atnced3 and atcat2 while showing a contrasting expression pattern in atgsnor1-3. The recorded increase in CAT, POD, and PPO-like activities, the accumulation of chlorophylls and total carotenoids, and the enhanced proline and malondialdehyde levels would explain the sensitivity level of atbzip62 towards drought stress. All results collectively suggest that AtbZIP62 could be involved in AtPYD1 transcriptional regulation while modulating cellular redox state and photosynthetic processes. In addition, AtbZIP62 is suggested to positively regulate drought stress response in Arabidopsis.
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Affiliation(s)
- Nkulu Kabange Rolly
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea; National Laboratory of Seed Testing, National Seed Service, SENASEM, Ministry of Agriculture, Kinshasa, Democratic Republic of the Congo.
| | - Qari Muhammad Imran
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Muhammad Shahid
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Muhammad Imran
- Laboratory of Crop Physiology, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Murtaza Khan
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University, Mardan, 23200, KP, Pakistan.
| | - In-Jung Lee
- Laboratory of Crop Physiology, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
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13
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Lee SU, Na KT, Lee YM, Park JH, Joo SY. Low vitamin D levels in post-menopausal women are associated with complex regional pain syndrome type I in surgically treated distal radius fractures. J Orthop Surg Res 2020; 15:328. [PMID: 32795337 PMCID: PMC7427936 DOI: 10.1186/s13018-020-01859-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/03/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Complex regional pain syndrome type I (CRPS I) is a chronic devastating condition and a relatively common complication of distal radius fractures (DRF). The purpose of this study was to investigate the relationship of vitamin D levels in surgically treated post-menopausal women with CRPS I occurrence in DRF. METHODS From February 2016 to March 2017, 158 surgically treated post-menopausal patients with DRF were enrolled. Exclusion criteria were (1) patients who had been taking vitamin D or osteoporosis medication at the time of injury; (2) patients with medical factors that may affect vitamin D levels; (3) patients who were reluctant to enroll in the study; and (4) patient with additional fractures, ligamentous injuries, or neuropathy. A total of 107 patients were available for final analysis. We compared the serum vitamin D levels in post-menopausal women with DRF with CRPS I (group 1) and without CRPS I (group 2). Bone mineral density (BMD) of the femur and spine, osteocalcin, alkaline phosphatase (ALP), body mass index (BMI) were also measured. RESULTS The average age at the time of surgery was 66.5 years (range, 39-86 years). The mean follow-up period was 16.3 months after surgery. Among the 107 surgically treated DRF patients, 19 (18%) met the Budapest criteria for CRPS I during the follow-up period. The mean serum vitamin D level in group 1 (15.2 ng/ml) was significantly lower than that in group 2 (20.5 ng/ml, p = 0.027). The mean values of osteocalcin, ALP, BMI, and BMD were not significantly different between the groups. CONCLUSION Lower vitamin D levels in post-menopausal women can increase CRPS I occurrence in distal radius fractures.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Ki-Tae Na
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Yoon-Min Lee
- Department of Orthopedic Surgery, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Jong Hwa Park
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Sun Young Joo
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dong-su ro, Bupyeong-gu, Incheon, 21431, Republic of Korea.
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Khan M, Imran QM, Shahid M, Mun BG, Lee SU, Khan MA, Hussain A, Lee IJ, Yun BW. Nitric oxide- induced AtAO3 differentially regulates plant defense and drought tolerance in Arabidopsis thaliana. BMC Plant Biol 2019; 19:602. [PMID: 31888479 PMCID: PMC6937950 DOI: 10.1186/s12870-019-2210-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/18/2019] [Indexed: 05/29/2023]
Abstract
BACKGROUND Exposure of plants to different environmental insults instigates significant changes in the cellular redox tone driven in part by promoting the production of reactive nitrogen species. The key player, nitric oxide (NO) is a small gaseous diatomic molecule, well-known for its signaling role during stress. In this study, we focused on abscisic acid (ABA) metabolism-related genes that showed differential expression in response to the NO donor S-nitroso-L-cysteine (CySNO) by conducting RNA-seq-based transcriptomic analysis. RESULTS CySNO-induced ABA-related genes were identified and further characterized. Gene ontology terms for biological processes showed most of the genes were associated with protein phosphorylation. Promoter analysis suggested that several cis-regulatory elements were activated under biotic and/or abiotic stress conditions. The ABA biosynthetic gene AtAO3 was selected for validation using functional genomics. The loss of function mutant atao3 was found to differentially regulate oxidative and nitrosative stress. Further investigations for determining the role of AtAO3 in plant defense suggested a negative regulation of plant basal defense and R-gene-mediated resistance. The atao3 plants showed resistance to virulent Pseudomonas syringae pv. tomato strain DC3000 (Pst DC3000) with gradual increase in PR1 gene expression. Similarly, atao3 plants showed increased hypersensitive response (HR) when challenged with Pst DC3000 (avrB). The atgsnor1-3 and atsid2 mutants showed a susceptible phenotype with reduced PR1 transcript accumulation. Drought tolerance assay indicated that atao3 and atnced3 ABA-deficient mutants showed early wilting, followed by plant death. The study of stomatal structure showed that atao3 and atnced3 were unable to close stomata even at 7 days after drought stress. Further, they showed reduced ABA content and increased electrolyte leakage than the wild-type (WT) plants. The quantitative polymerase chain reaction analysis suggested that ABA biosynthesis genes were down-regulated, whereas expression of most of the drought-related genes were up-regulated in atao3 than in WT. CONCLUSIONS AtAO3 negatively regulates pathogen-induced salicylic acid pathway, although it is required for drought tolerance, despite the fact that ABA production is not totally dependent on AtAO3, and that drought-related genes like DREB2 and ABI2 show response to drought irrespective of ABA content.
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Affiliation(s)
| | | | | | - Bong-Gyu Mun
- Laboratory of Plant Functional Genomics Department of Plant Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics Department of Plant Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhammad Aaqil Khan
- Laboratory of Plant Physiology, Department of Plant Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University, KPK, Mardan, Pakistan
| | - In-Jung Lee
- Laboratory of Plant Physiology, Department of Plant Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics Department of Plant Biosciences, Kyungpook National University, Daegu, Republic of Korea
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15
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Khan MA, Khan AL, Imran QM, Asaf S, Lee SU, Yun BW, Hamayun M, Kim TH, Lee IJ. Exogenous application of nitric oxide donors regulates short-term flooding stress in soybean. PeerJ 2019; 7:e7741. [PMID: 31608169 PMCID: PMC6788439 DOI: 10.7717/peerj.7741] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 08/25/2019] [Indexed: 12/20/2022] Open
Abstract
Short-term water submergence to soybean (Glycine max L.) create hypoxic conditions hindering plant growth and productivity. Nitric oxide (NO) is considered a stress-signalling and stress-evading molecule, however, little is known about its role during flooding stress. We elucidated the role of sodium nitroprusside (SNP) and S-nitroso L-cysteine (CySNO) as NO donor in modulation of flooding stress-related bio-chemicals and genetic determinants of associated nitrosative stress to Daewon and Pungsannamul soybean cultivars after 3 h and 6 h of flooding stress. The results showed that exogenous SNP and CysNO induced glutathione activity and reduced the resulting superoxide anion contents during short-term flooding in Pungsannamul soybean. The exo- SNP and CysNO triggered the endogenous S-nitrosothiols, and resulted in elevated abscisic acid (ABA) contents in both soybean cultivars overtime. To know the role of ABA and NO related genes in short-term flooding stress, the mRNA expression of S-nitrosoglutathione reductase (GSNOR1), NO overproducer1 (NOX1) and nitrate reductase (NR), Timing of CAB expression1 (TOC1), and ABA-receptor (ABAR) were assessed. The transcripts accumulation of GSNOR1, NOX1, and NR being responsible for NO homeostasis, were significantly high in response to early or later phases of flooding stress. ABAR and TOC1 showed a decrease in transcript accumulation in both soybean plants treated with exogenous SNP and CySNO. The exo- SNP and CySNO could impinge a variety of biochemical and transcriptional programs that can mitigate the negative effects of short-term flooding stress in soybean.
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Affiliation(s)
- Muhammad Aaqil Khan
- School of Applied Biosciences, Kyungpook National University, Degue, South Korea
| | - Abdul Latif Khan
- Natural and Medical Sciences Research Center University of Nizwa, Nizwa, Oman
| | - Qari Muhammad Imran
- School of Applied Biosciences, Kyungpook National University, Degue, South Korea
| | - Sajjad Asaf
- Natural and Medical Sciences Research Center University of Nizwa, Nizwa, Oman
| | - Sang-Uk Lee
- School of Applied Biosciences, Kyungpook National University, Degue, South Korea
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Degue, South Korea
| | - Muhammad Hamayun
- Department of Botany, Abdul Wali Khan University, Mardan, Pakistan
| | - Tae-Han Kim
- School of Agricultural Civil & Bio-industrial Machinery Engineering, Kyungpook National University, Daegu, South Korea
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Degue, South Korea
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Bot P, Mun BG, Imran QM, Hussain A, Lee SU, Loake G, Yun BW. Differential expression of AtWAKL10 in response to nitric oxide suggests a putative role in biotic and abiotic stress responses. PeerJ 2019; 7:e7383. [PMID: 31440429 PMCID: PMC6699482 DOI: 10.7717/peerj.7383] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 06/30/2019] [Indexed: 12/13/2022] Open
Abstract
Plant defense against pathogens and abiotic stresses is regulated differentially by communicating signal transduction pathways in which nitric oxide (NO) plays a key role. Here, we show the biological role of Arabidopsis thaliana wall-associated kinase (AtWAK) Like10 (AtWAKL10) that exhibits greater than a 100-fold change in transcript accumulation in response to the NO donor S-nitroso-L-cysteine (CysNO), identified from high throughput RNA-seq based transcriptome analysis. Loss of AtWAKL10 function showed a similar phenotype to wild type (WT) with, however, less branching. The growth of atwakl10 on media supplemented with oxidative or nitrosative stress resulted in differential results with improved growth following treatment with CysNO but reduced growth in response to S-nitrosoglutatione (GSNO) and methyl-viologen. Further, atwakl10 plants exhibited increased susceptibility to virulent Pseudomonas syringae pv tomato (Pst) DC3000 with a significant increase in pathogen growth and decrease in PR1 transcript accumulation compared to WT overtime. Similar results were found in response to Pst DC3000 avrB, resulting in increased cell death as shown by increased electrolyte leakage in atwakl10. Furthermore, atwakl10 also showed increased reactive oxygen species accumulation following Pst DC3000 avrB inoculation. Promoter analysis of AtWAKL10 showed transcription factor (TF) binding sites for biotic and abiotic stress-related TFs. Further investigation into the role of AtWAKL10 in abiotic stresses showed that following two weeks water-withholding drought condition most of the atwakl10 plants got wilted; however, the majority (60%) of these plants recovered following re-watering. In contrast, in response to salinity stress, atwakl10 showed reduced germination under 150 mM salt stress compared to WT, suggesting that NO-induced AtWAKL10 differentially regulates different abiotic stresses. Taken together, this study further elucidates the importance of NO-induced changes in gene expression and their role in plant biotic and abiotic stress tolerance.
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Affiliation(s)
- Phearom Bot
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Bong-Gyu Mun
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Qari Muhammad Imran
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Sang-Uk Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Gary Loake
- Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, UK
| | - Byung-Wook Yun
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
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Rolly NK, Lee SU, Imran QM, Hussain A, Mun BG, Kim KM, Yun BW. Nitrosative stress-mediated inhibition of OsDHODH1 gene expression suggests roots growth reduction in rice ( Oryza sativa L.). 3 Biotech 2019; 9:273. [PMID: 31245237 PMCID: PMC6581995 DOI: 10.1007/s13205-019-1800-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/09/2018] [Accepted: 06/06/2019] [Indexed: 12/11/2022] Open
Abstract
This study monitored the transcriptional response of OsDHODH1 under nitrosative stress conditions relative to the transcripts accumulations for the core mitochondrial cytochrome c oxidase1 (CcOX1) subunit, nuclear CcOX subunits 5b and 5c, two rice nitrate reductases (OsNIA1 and OsNIA2), and nitric oxide excess 1 (OsNOE1) genes. Our findings reveal that short-term exposure of rice seedlings to 1 mM SNP (Nitric oxide donor) applied exogenously for 1 h resulted in significant down-regulation of OsDHODH1 expression in all rice cultivars. In addition, the transcriptional patterns for the CcOX subunits, which are known to have a high affinity for nitric oxide, showed that the core catalytic subunit (OsCcOX1) and the nuclear subunit (OsCcOX5b) were up-regulated, while the nuclear subunit (OsCcOX5c) gene expression was suppressed. OsGSNOR1 expression was enhanced or decreased concomitant with a decrease or increase in SNO accumulation, particularly at the basal level. Moreover, high OsNIA1 expression was consistent with impaired root development, whereas low transcript accumulation matched a balanced root-growth pattern. This suggests that OsNIA1 expression would prevail over OsNIA2 expression under nitrosative stress response in rice. The level of malondialdehyde (MDA) content increased with the increase in SNP concentration, translating enhanced oxidative damage to the cell. We also observed increased catalase activity in response to 5 mM SNP suggesting that potential cross-talk exist between nitrosative and oxidative stress. These results collectively suggest a possible role of OsDHODH1 and OsCcOX5b role in plant root growth during nitrosative stress responses.
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Affiliation(s)
- Nkulu Kabange Rolly
- Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Qari Muhammad Imran
- Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University, Mardan, Pakistan
| | - Bong-Gyu Mun
- Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Kyung-Min Kim
- Laboratory of Plant Molecular Breeding, School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
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Kim MG, Han MH, Kim MW, Lee SU, Jang DH. Bilateral idiopathic neuralgic amyotrophy involving selective branches of peripheral nerves with a stepwise progression: A case report. Medicine (Baltimore) 2019; 98:e15549. [PMID: 31083213 PMCID: PMC6531285 DOI: 10.1097/md.0000000000015549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
RATIONALE This is a report about a rare case of idiopathic neuralgic amyotrophy (INA) involving selective peripheral nerve branches of bilateral upper extremities, which exhibited a stepwise progression. PATIENT CONCERN A 66-year-old woman presented with paresis of selective branches of bilateral median nerves, followed by paresis of bilateral posterior interosseous nerve (PIN) 8 weeks later. DIAGNOSES We diagnosed it as INA involving the selective motor branches of bilateral median nerves and bilateral PINs. Forearm magnetic resonance imaging combined with electrodiagnostic testing helped accurately identify the affected regions, and ultrasonography demonstrated a severe constriction of the left PIN. INTERVENTIONS Intravenous methylprednisolone partially relieved the pain and paralysis. Surgical neurolysis of the constricted left PIN was done for persistent paralysis. OUTCOMES The muscle power of the bilateral median nerve territories was recovered to nearly normal, but the muscle power of the left PIN territories remained at grade 1. LESSONS This case indicates that INA can manifest as a multiple mononeuropathy involving individual fascicular levels of peripheral nerve branches with focal constriction, and electrodiagnostic study combined with forearm MRI and ultrasonography can help in identifying affected lesion and predicting the prognosis.
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Affiliation(s)
| | | | | | - Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bupyeong-gu, Incheon, Republic of Korea
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Affiliation(s)
- Sang-Uk Lee
- National Center for Mental Health, Seoul, Korea
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Korea
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Lee SU, Jeon M, Park JI. A Comparison of Attitudes Toward Suicide Among Individuals With and Without Suicidal Thoughts and Suicide Attempts in South Korea. Crisis 2019; 40:27-35. [DOI: 10.1027/0227-5910/a000528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Abstract. Background: A suicidal person can go through different stages that include suicidal thoughts and suicide attempts. For a few individuals, these can end up with suicide. However, there have been no studies investigating any differences in attitudes toward suicides among individuals with no suicidal thoughts, those with suicidal thoughts, and those with suicide attempts. Aims: This study was carried out to compare attitudes toward suicide among three different groups: individuals with a history of no suicidal thoughts, those with a history of suicidal thoughts, and those with a history of suicide attempts. Method: To examine Koreans' attitudes toward suicide, we analyzed the data from the 2013 National Suicide Survey involving 1,500 participants aged between 19 and 75 years. Results: Different attitudes toward suicide were found among the three groups. Persons reporting that they had made a suicide attempt in their life showed the most permissive attitudes toward suicide. Limitations: Since this research is based on cross-sectional data, it is difficult to eliminate the possibility of changes in attitude toward suicide completely after having a suicidal thought and suicide attempt. Conclusion: These results can be a useful source for constructing effective messages for suicide prevention campaigns and can ultimately contribute to an improvement in the public's perceptions of suicide in the future.
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Mina Jeon
- Department of Psychology and Human Development, UCL Institute of Education, London, UK
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University School of Medicine, Chunchon, South Korea
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Abstract
A 32-year-old man presented with simultaneous dorsal dislocations of the index-to-little finger carpometacarpal (CMC) joint with carpal bone fractures. Closed reduction was unsuccessful even after general anesthesia. During open dorsal approach, we found interposed joint capsule in the CMC joints and after removal of the joint capsule open reduction was easily achieved. We placed four Kirschner wires through the CMC joint. Furthermore, the fractured dorsal fragments of the trapezoid and hamate were fixed with mini screw in each. During 1-year followup, the patient showed good recovery and no evidence of posttraumatic arthritic changes in plain X-ray. We recommend to fix the dorsal fragment of the carpal bone with screws as well as the transarticular fixation of the CMC joint in case of concurrent CMC joint fracture-dislocation of all four fingers.
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Affiliation(s)
- Ki-Tae Na
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea,Address for correspondence: Dr. Sang-Uk Lee, Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, 56 Dongsu-Ro, Bupyeong-Gu, Incheon 21431, South Korea. E-mail:
| | - Sun-Young Joo
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Jin-Young Nho
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
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Kim CE, Ko YM, Lee SU, Choi S, Han K, Park SJ, Jo M, Park YK, Lee HY, Park S. A Preliminary Study to Determine Comprehensive Research and Development Plans for Promoting Mental Health Services. Osong Public Health Res Perspect 2018; 9:314-324. [PMID: 30584495 PMCID: PMC6296814 DOI: 10.24171/j.phrp.2018.9.6.05] [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] [Indexed: 11/05/2022] Open
Abstract
Objectives The aim of this study was to analyze research and development projects in mental health services in Korea, using priority evaluation of mental health promotion policies to determine direction of the service. Methods An online survey was conducted that targeted experts in the mental health service regarding promotion of mental health in Korea in 2016. The survey was based on 32 policy projects that resulted from 12 strategies according to 4 policy objectives. Results Analysis of 32 mental health projects were assessed regarding the possibility of technology development success, magnitude of the ripple effect, and necessity of a national response. It was observed that 3 policy projects relevant to suicide, had a high relative priority. This was followed by policies for improvement of health insurance and the medical benefit cost system, and policies for reinforcement of crisis psychological support such as those for disaster victims. Conclusion The prioritization of mental health services should place an emphasis on promotion of a healthy mental lifestyle, rehabilitation support for patients with serious mental illness, and reinforcement of social safety networks for suicide prevention.
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Affiliation(s)
- Chul Eung Kim
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Young-Mi Ko
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Sang-Uk Lee
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - SungKu Choi
- Division of Medical Services, National Center for Mental Health, Seoul, Korea
| | - Kiwan Han
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Se Jin Park
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - MinKyung Jo
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Yu Kyong Park
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Hye Young Lee
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
| | - Subin Park
- Department of Research Planning, Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
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Abstract
OBJECTIVES The South Korean government has recently implemented policies to prevent suicide. However, there were few studies examining the recent changing trends in suicide rates. This study aims to examine the changing trends in suicide rates by time and age group. DESIGN A descriptive study using nationwide mortality rates. SETTING Data on the nationwide cause of death from 1993 to 2016 were obtained from Statistics Korea. PARTICIPANTS People living in South Korea. INTERVENTIONS Implementation of national suicide prevention policies (first: year 2004, second: year 2009). PRIMARY OUTCOME MEASURES Suicide was defined as 'X60-X84' code according to the ICD-10 code. Age-standardised suicide rates were estimated, and a Joinpoint regression model was applied to describe the trends in suicide rate. RESULTS From 2010 to 2016, the suicide rates in South Korea have been decreasing by 5.5% (95% CI -10.3% to -0.5%) annually. In terms of sex, the suicide rate for men had increased by 5.0% (95% CI 3.6% to 6.4%) annually from 1993 to 2010. However, there has been no statistically significant change from 2010 to 2016. For women, the suicide rate had increased by 7.5% (95% CI 6.3% to 8.7%) annually from 1993 to 2009, but since 2009, the suicide rate has been significantly decreasing by 6.1% (95% CI -9.1% to -3.0%) annually until 2016. In terms of the age group, the suicide rates among women of almost all age groups have been decreasing since 2010; however, the suicide rates of men aged between 30 and 49 years showed continuously increasing trends. CONCLUSION Our results showed that there were differences in the changing trends in suicide rate by sex and age groups. Our finding suggests that there was a possible relationship between implementation of second national suicide prevention policies and a decline in suicide rate.
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, Republic of Korea
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jong-Ik Park
- Department of Psychiatry, School of Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - Soojung Lee
- Department of Nursing, Kyungnam University, Changwon, Republic of Korea
| | - In-Hwan Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Joong-Myung Choi
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Chang-Mo Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Lee SU, Soh M, Ryu V, Kim CE, Park S, Roh S, Oh IH, Lee HY, Choi S. Correction to: Risk factors for relapse in patients with first-episode schizophrenia: analysis of the Health Insurance Review and Assessment Service data from 2011 to 2015. Int J Ment Health Syst 2018; 12:32. [PMID: 29930700 PMCID: PMC5992648 DOI: 10.1186/s13033-018-0193-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 11/10/2022] Open
Abstract
[This corrects the article DOI: 10.1186/s13033-018-0187-1.].
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea.,3Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Minah Soh
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Vin Ryu
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Chul-Eung Kim
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Subin Park
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Sungwon Roh
- 2Department of Psychiatry, Hanyang University College of Medicine, Seoul, South Korea
| | - In-Hwan Oh
- 3Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Hye-Young Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - SungKu Choi
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
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25
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Mun BG, Lee SU, Hussain A, Kim HH, Rolly NK, Jung KH, Yun BW. S-nitrosocysteine-responsive genes modulate diverse regulatory pathways in Oryza sativa: a transcriptome profiling study. Funct Plant Biol 2018; 45:630-644. [PMID: 32290965 DOI: 10.1071/fp17249] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 12/05/2017] [Indexed: 06/11/2023]
Abstract
Rice (Oryza sativa L.) is a major food crop and also a well-established genetic model. Nitric oxide (NO) and its derivatives are important signalling molecules that actively participate in various signalling pathways in response to different stresses. In this study, we performed RNA-seq mediated transcriptomic analysis of rice after treatment with the nitric oxide donor, S-nitroso-L-cysteine (CySNO), generating an average of 37.5 and 41.5 million reads from control and treated leaf samples respectively. More than 95% of the reads were successfully mapped to the O. sativa reference genome yielding a total of 33539 differentially expressed genes (DEGs, P < 0.05). Further analyses identified 825 genes with at least 2-fold change in the expression following treatment with CySNO (P < 0.01). The DEGs identified were involved in diverse molecular functions such as catalytic activity, binding, transport, and receptor activity and were mostly located in the membrane, organelles such as nucleus, Golgi apparatus and mitochondria. DEGs also contained several genes that regulate responses to abiotic stresses such as drought, heat, cold and salt stress and biotic stresses. We also found significantly similar expression patterns of CySNO-responsive DEGs of rice with the CySNO-responsive DEGs of Arabidopsis in a previous study. Expression patterns of genes involved in key biological functions were verified using quantitative real time (qRT)-PCR. The findings of this study suggest that NO regulates the transcriptional control of genes involved in a wide variety of physiological functions in rice, and that NO-mediated transcriptional networks are highly conserved across the plant kingdom. This study provides useful information regarding the transcriptional response of plants to nitrosative stress.
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Affiliation(s)
- Bong-Gyu Mun
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
| | - Sang-Uk Lee
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
| | - Adil Hussain
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
| | - Hyun-Ho Kim
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
| | - Nkulu Kabange Rolly
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
| | - Ki-Hong Jung
- Department of Plant Molecular Systems Biotechnology and Crop Biotechnology Institute, Kyung Hee University, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
| | - Byung-Wook Yun
- School of Applied Bioscience, College of Agriculture and Life Science, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu, 41566, South Korea
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Ban SP, Kwon OK, Lee SU, Bang JS, Oh CW, Jeong HJ, Cho MJ, Jeong EA, Kim T. Long-Term Outcomes of Patients with Stent Tips Embedded into Internal Carotid Artery Branches during Aneurysm Coiling. AJNR Am J Neuroradiol 2018. [PMID: 29519788 DOI: 10.3174/ajnr.a5583] [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: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE During stent-assisted coiling of ICA aneurysms, stent tips are sometimes unintentionally embedded into ICA branches. Stent tips can be visualized because they have radiopaque markers. Concerns regarding stent tip misplacement include risks of artery perforation and occlusion. The aim of this study was to evaluate the long-term outcomes of ICA branches with embedded stent tips. MATERIALS AND METHODS ICA branches with embedded stent tips were identified among 35 patients with unruptured ICA aneurysms treated with stent-assisted coiling between November 2003 and November 2014. Patient clinical and angiographic outcomes associated with the embedded stent tip were analyzed. RESULTS Most of the 35 studied aneurysms were paraclinoid ICA aneurysms (n = 30). The most commonly involved ICA branch was the posterior communicating artery (26 patients, 74.3%), followed by the anterior choroidal artery (8 patients, 22.9%) and ophthalmic artery (1 patient, 2.9%). During the follow-up period (38.6 ± 17.9 months), no new neurologic deficits developed. Neither hemorrhagic nor thromboembolic events occurred. Angiography was performed during the final follow-up evaluation at a mean of 32.7 ± 18.0 months, and all ICA branches with embedded stent tips showed patent blood flow without severe luminal narrowing. CONCLUSIONS In our experience, placement of a stent tip into ICA branches during stent-assisted coiling was not associated with any major adverse events.
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Affiliation(s)
- S P Ban
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - O-K Kwon
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - S U Lee
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - J S Bang
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - C W Oh
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - H J Jeong
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - M J Cho
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - E-A Jeong
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - T Kim
- From the Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea.
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27
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Lee SU, Soh M, Ryu V, Kim CE, Park S, Roh S, Oh IH, Lee HY, Choi S. Analysis of the Health Insurance Review and Assessment Service data from 2011 to 2015. Int J Ment Health Syst 2018; 12:9. [PMID: 29507604 PMCID: PMC5834870 DOI: 10.1186/s13033-018-0187-1] [Citation(s) in RCA: 4] [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: 10/24/2017] [Accepted: 02/15/2018] [Indexed: 01/31/2023] Open
Abstract
Background Schizophrenia is a recurrent, debilitating disease that is rarely curable. Rapid intervention after the first episode of schizophrenia has been shown to positively affect the prognosis. Unfortunately, basic data is scarce on first-episode schizophrenia in Korean patients making it difficult to create a comprehensive list of risk factors for relapse. This study aims to investigate the demographic characteristics and institutional factors of patients with first-episode schizophrenia in order to identify risk factors for relapse. Methods Data from the Health Insurance Review & Assessment Service (HIRA) was used for this study to represent the Korean patient population. To identify factors affecting relapse, we explored gender, age, geographic location, medical benefits, type of medical institution, type of medication used, medication adherence, and the severity of symptoms. Data analysis was performed using the Cox proportional hazard model. Results The number of patients diagnosed with first-episode schizophrenia in Korea over a 2-year period was 4567 of which 1265 (27.7%) patients experienced a relapse during the observational period. Factors affecting relapse included age, type of medical institution, type of medication used, medication adherence, and type of treatment (inpatient or outpatient) after the initial diagnosis, which varied depending upon the severity of symptoms. Conclusions It was found that environmental and institutional factors as well as the type of medical treatment were crucial in determining whether patients with first-episode schizophrenia subsequently relapsed. The results of this study can be utilized as source material for directing therapeutic interventions and improving mental health policies in the future.
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea.,3Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Minah Soh
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Vin Ryu
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Chul-Eung Kim
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Subin Park
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - Sungwon Roh
- 2Department of Psychiatry, Hanyang University College of Medicine, Seoul, South Korea
| | - In-Hwan Oh
- 3Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Hye-Young Lee
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
| | - SungKu Choi
- Department of Mental Health Research, National Center for Mental Health, Seoul, South Korea
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28
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Imran QM, Hussain A, Lee SU, Mun BG, Falak N, Loake GJ, Yun BW. Transcriptome profile of NO-induced Arabidopsis transcription factor genes suggests their putative regulatory role in multiple biological processes. Sci Rep 2018; 8:771. [PMID: 29335449 PMCID: PMC5768701 DOI: 10.1038/s41598-017-18850-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 12/19/2017] [Indexed: 11/08/2022] Open
Abstract
TFs are important proteins regulating plant responses during environmental stresses. These insults typically induce changes in cellular redox tone driven in part by promoting the production of reactive nitrogen species (RNS). The main source of these RNS is nitric oxide (NO), which serves as a signalling molecule, eliciting defence and resistance responses. To understand how these signalling molecules regulate key biological processes, we performed a large scale S-nitrosocysteine (CySNO)-mediated RNA-seq analysis. The DEGs were analysed to identify potential regulatory TFs. We found a total of 673 (up- and down-regulated) TFs representing a broad range of TF families. GO-enrichment and MapMan analysis suggests that more than 98% of TFs were mapped to the Arabidopsis thaliana genome and classified into pathways like hormone signalling, protein degradation, development, biotic and abiotic stress, etc. A functional analysis of three randomly selected TFs, DDF1, RAP2.6, and AtMYB48 identified a regulatory role in plant growth and immunity. Loss-of-function mutations within DDF1 and RAP2.6 showed compromised basal defence and effector triggered immunity, suggesting their positive role in two major plant defence systems. Together, these results imply an important data representing NO-responsive TFs that will help in exploring the core mechanisms involved in biological processes in plants.
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Affiliation(s)
- Qari Muhammad Imran
- Laboratory of Plant Functional Genomics, School of Applied BioSciences, Kyungpook National University, Daegu, Republic of Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan University, Mardan, Pakistan
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics, School of Applied BioSciences, Kyungpook National University, Daegu, Republic of Korea
| | - Bong-Gyu Mun
- Laboratory of Plant Functional Genomics, School of Applied BioSciences, Kyungpook National University, Daegu, Republic of Korea
| | - Noreen Falak
- Laboratory of Plant Functional Genomics, School of Applied BioSciences, Kyungpook National University, Daegu, Republic of Korea
| | - Gary J Loake
- Institute of Molecular Plant Sciences, University of Edinburgh, King's Buildings, Edinburgh, UK.
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics, School of Applied BioSciences, Kyungpook National University, Daegu, Republic of Korea.
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Mun BG, Lee SU, Park EJ, Kim HH, Hussain A, Imran QM, Lee IJ, Yun BW. Analysis of transcription factors among differentially expressed genes induced by drought stress in Populus davidiana. 3 Biotech 2017; 7:209. [PMID: 28667649 PMCID: PMC5493580 DOI: 10.1007/s13205-017-0858-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 04/25/2017] [Accepted: 06/17/2017] [Indexed: 11/26/2022] Open
Abstract
Populus davidiana is native to the Korean Peninsula and is one of the most dominant and abundantly growing forest trees in eastern Asia. Compared to other Populus species such as P. trichocarpa, P. euphratica, and P. tremula, relatively little is known about P. davidiana. Here, we performed transcriptomic analysis of P. davidiana under drought stress induced by 10% polyethylene glycol. A total of 12,403 and 12,414 differentially expressed genes (DEGs) were successfully annotated with the P. trichocarpa reference genome after 6 and 12 h of treatment, respectively. Of these, a total of 404 genes (238 up-regulated and 166 down-regulated) after 6 h and 359 genes (187 up-regulated and 172 down-regulated) after 12 h of treatment were identified as transcription factors. Transcription factors known to be key genes for drought stress response, such as AP2-EREB, WRKY, C2H2, and NAC, were identified. This results suggesting that early induction of these genes affected initiation of transcriptional regulation in response to drought stress. Quantitative real-time PCR results of selected genes showed highly significant (R = 0.93) correlation with RNA-Seq data. Interestingly, the expression pattern of some transcription factors was P. davidiana specific. The sequence of P. davidiana ortholog of P. trichocarpa gene POPTR_0018s10230, which plays an important role in plant response to drought, was further analyzed as our RNA-Seq results showed highly significant changes in the expression of this gene following the stress treatment. Sequence of the gene was compared to P. trichocarpa gene sequence using cloning-based sequencing. Additionally, we generated a predicted 3D protein structure for the gene product. Results indicated that the amino acid sequence of P. davidiana-specific POPTR_0018s10230 is different at six different positions compared to P. trichocarpa, resulting in a significantly different structure of the protein. Identifying the transcription factors expressed in P. davidiana under drought stress will not only offer clues for understanding the underlying mechanisms involved in drought stress physiology but also serve as a basis for future molecular studies on this species.
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Affiliation(s)
- Bong-Gyu Mun
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Sang-Uk Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Eung-Jun Park
- Division of Forest Biotechnology, Korea Forest Research Institute, Suwon, 16631, Republic of Korea
| | - Hyun-Ho Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Adil Hussain
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
- Department of Agriculture, Abdul Wali Khan University, Mardan, Pakistan
| | - Qari Muhammad Imran
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
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30
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Lee SU, Oh IH, Jeon HJ, Roh S. Suicide rates across income levels: Retrospective cohort data on 1 million participants collected between 2003 and 2013 in South Korea. J Epidemiol 2017; 27:258-264. [PMID: 28314637 PMCID: PMC5463019 DOI: 10.1016/j.je.2016.06.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 06/29/2016] [Indexed: 11/29/2022] Open
Abstract
Background The relation of income and socioeconomic status with suicide rates remains unclear. Most previous studies have focused on the relationship between suicide rates and macroeconomic factors (e.g., economic growth rate). Therefore, we aimed to identify the relationship between individuals' socioeconomic position and suicide risk. Methods We analyzed suicide mortality rates across socioeconomic positions to identify potential trends using observational data on suicide mortality collected between January 2003 and December 2013 from 1,025,340 national health insurance enrollees. We followed the subjects for 123.5 months on average. Socioeconomic position was estimated using insurance premium levels. To examine the hazard ratios of suicide mortality in various socioeconomic positions, we used Cox proportional hazard models. Results We found that the hazard ratios of suicide showed an increasing trend as socioeconomic position decreased. After adjusting for gender, age, geographic location, and disability level, Medicaid recipients had the highest suicide hazard ratio (2.28; 95% CI, 1.87–2.77). Among the Medicaid recipients, men had higher hazard ratios than women (2.79; 95% CI, 2.17–3.59 vs. 1.71; 95% CI, 1.25–2.34). Hazard ratios also varied across age groups. The highest hazard ratio was found in the 40–59-year-old group (3.19; 95% CI, 2.31–4.43), whereas the lowest ratio was found in those 60 years and older (1.44; 95% CI, 1.09–1.87). Conclusions Our results illuminate the relationship between socioeconomic position and suicide rates and can be used to design and implement future policies on suicide prevention. Suicide showed an increasing trend as income levels decreased. Suicide was most frequent in Medicaid recipients. Suicide showed different trends across gender and age groups.
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Affiliation(s)
- Sang-Uk Lee
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea; Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - In-Hwan Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Hong Jin Jeon
- Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea; Department of Health Sciences & Technology, Samsung Advanced Institute for Health Sciences & Technology, Seoul, South Korea; Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences & Technology, Seoul, South Korea; Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Seoul, South Korea; Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sungwon Roh
- Department of Psychiatry, Hanyang University College of Medicine, Seoul, South Korea.
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Park YG, Mun BG, Kang SM, Hussain A, Shahzad R, Seo CW, Kim AY, Lee SU, Oh KY, Lee DY, Lee IJ, Yun BW. Bacillus aryabhattai SRB02 tolerates oxidative and nitrosative stress and promotes the growth of soybean by modulating the production of phytohormones. PLoS One 2017; 12:e0173203. [PMID: 28282395 PMCID: PMC5345817 DOI: 10.1371/journal.pone.0173203] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 02/16/2017] [Indexed: 12/22/2022] Open
Abstract
Plant growth promoting rhizobacteria (PGPR) are diverse, naturally occurring bacteria that establish a close association with plant roots and promote the growth and immunity of plants. Established mechanisms involved in PGPR-mediated plant growth promotion include regulation of phytohormones, improved nutrient availability, and antagonistic effects on plant pathogens. In this study, we isolated a bacterium from the rhizospheric soil of a soybean field in Chungcheong buk-do, South Korea. Using 16S rRNA sequencing, the bacterium was identified as Bacillus aryabhattai strain SRB02. Here we show that this strain significantly promotes the growth of soybean. Gas chromatography-mass spectrometry analysis showed that SRB02 produced significant amounts of abscisic acid, indole acetic acid, cytokinin and different gibberellic acids in culture. SRB02-treated soybean plants showed significantly better heat stress tolerance than did untreated plants. These plants also produced consistent levels of ABA under heat stress and exhibited ABA-mediated stomatal closure. High levels of IAA, JA, GA12, GA4, and GA7, were recorded in SRB02-treated plants. These plants produced longer roots and shoots than those of control plants. B. aryabhattai SRB02 was found to be highly tolerant to oxidative stress induced by H2O2 and MV potentiated by high catalase (CAT) and superoxide dismutase (SOD) activities. SRB02 also tolerated high nitrosative stress induced by the nitric oxide donors GSNO and CysNO. Because of these attributes, B. aryabhattai SRB02 may prove to be a valuable resource for incorporation in biofertilizers and other soil amendments that seek to improve crop productivity.
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Affiliation(s)
- Yeon-Gyeong Park
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Bong-Gyu Mun
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sang-Mo Kang
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Adil Hussain
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
- Department of Agriculture, Abdul Wali Khan University, Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Raheem Shahzad
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Chang-Woo Seo
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Ah-Yeong Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sang-Uk Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Kyeong Yeol Oh
- Gyeongnam Oriental Medicinal Herb Institute, Sancheong, Republic of Korea
| | - Dong Yeol Lee
- Gyeongnam Oriental Medicinal Herb Institute, Sancheong, Republic of Korea
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
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Imran QM, Falak N, Hussain A, Mun BG, Sharma A, Lee SU, Kim KM, Yun BW. Nitric Oxide Responsive Heavy Metal-Associated Gene AtHMAD1 Contributes to Development and Disease Resistance in Arabidopsis thaliana. Front Plant Sci 2016; 7:1712. [PMID: 27917181 PMCID: PMC5116471 DOI: 10.3389/fpls.2016.01712] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 10/31/2016] [Indexed: 05/29/2023]
Abstract
Exposure of plants to different biotic and abiotic stress condition instigates significant change in the cellular redox status; resulting in the elevation of reactive nitrogen species that play signaling role in mediating defense responses. Heavy metal associated (HMA) domain containing genes are required for spatio-temporal transportation of metal ions that bind with various enzymes and co-factors within the cell. To uncover the underlying mechanisms mediated by AtHMA genes, we identified 14 Arabidopsis HMA genes that were differentially expressed in response to nitrosative stress through RNA-seq analysis. Of those 14 genes, the expression of eight HMA genes was significantly increased, whereas that of six genes was significantly reduced. We further validated the RNA-seq results through quantitative real-time PCR analysis. Gene ontology analysis revealed the involvement of these genes in biological processes such as hemostasis and transport. The majority of these nitric oxide (NO)-responsive AtHMA gene products are carrier/transport proteins. AtHMAD1 (At1g51090) showed the highest fold change to S-nitrosocystein. We therefore, further investigated its role in oxidative and nitrosative mediated stress conditions and found that AtHMAD1 has antagonistic role in shoot and root growth. Characterization of AtHMAD1 through functional genomics showed that the knock out mutant athmad1 plants were resistant to virulent Pseudomonas syringae (DC3000) and showed early induction and high transcript accumulation of pathogenesis related gene. Furthermore, inoculation of athamd1 with avirulent strain of the same bacteria showed negative regulation of R-gene mediated resistance. These results were supported by hypersensitive cell death response and cell death induced electrolyte leakage. AtHMAD1 was also observed to negatively regulate systemic acquired resistance SAR as the KO mutant showed induction of SAR marker genes. Overall, these results imply that NO-responsive AtHMA domain containing genes may play an important role in plant development and immunity.
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Affiliation(s)
- Q. Muhammad Imran
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Noreen Falak
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Adil Hussain
- Department of Agriculture, Abdul Wali Khan UniversityMardan, Pakistan
| | - Bong-Gyu Mun
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Arti Sharma
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Kyung-Min Kim
- Laboratory of Plant Molecular Breeding, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
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Sharma A, Hussain A, Mun BG, Imran QM, Falak N, Lee SU, Kim JY, Hong JK, Loake GJ, Ali A, Yun BW. Comprehensive analysis of plant rapid alkalization factor (RALF) genes. Plant Physiol Biochem 2016; 106:82-90. [PMID: 27155375 DOI: 10.1016/j.plaphy.2016.03.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/14/2016] [Accepted: 03/27/2016] [Indexed: 05/04/2023]
Abstract
Receptor mediated signal carriers play a critical role in the regulation of plant defense and development. Rapid alkalization factor (RALF) proteins potentially comprise important signaling components which may have a key role in plant biology. The RALF gene family contains large number of genes in several plant species, however, only a few RALF genes have been characterized to date. In this study, an extensive database search identified 39, 43, 34 and 18 RALF genes in Arabidopsis, rice, maize and soybean, respectively. These RALF genes were found to be highly conserved across the 4 plant species. A comprehensive analysis including the chromosomal location, gene structure, subcellular location, conserved motifs, protein structure, protein-ligand interaction and promoter analysis was performed. RALF genes from four plant species were divided into 7 groups based on phylogenetic analysis. In silico expression analysis of these genes, using microarray and EST data, revealed that these genes exhibit a variety of expression patterns. Furthermore, RALF genes showed distinct expression patterns of transcript accumulation in vivo following nitrosative and oxidative stresses in Arabidopsis. Predicted interaction between RALF and heme ligand also showed that RALF proteins may contribute towards transporting or scavenging oxygen moieties. This suggests a possible role for RALF genes during changes in cellular redox status. Collectively, our data provides a valuable resource to prime future research in the role of RALF genes in plant growth and development.
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Affiliation(s)
- Arti Sharma
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Adil Hussain
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea; Department of Agriculture, Abdul Wali Khan University, Mardan, Pakistan.
| | - Bong-Gyu Mun
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Qari Muhammad Imran
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Noreen Falak
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Sang-Uk Lee
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Jae Young Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
| | - Jeum Kyu Hong
- Department of Horticultural Science, Gyeongnam National University of Science and Technology (GNTech), Jinju, Republic of Korea.
| | - Gary John Loake
- Institute of Molecular Plant Sciences, The University of Edinburgh, United Kingdom.
| | - Asad Ali
- Department of Plant Pathology, The University of Agriculture, Peshawar, Pakistan.
| | - Byung-Wook Yun
- School of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea.
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Yun BW, Skelly MJ, Yin M, Yu M, Mun BG, Lee SU, Hussain A, Spoel SH, Loake GJ. Nitric oxide and S-nitrosoglutathione function additively during plant immunity. New Phytol 2016; 211:516-26. [PMID: 26916092 DOI: 10.1111/nph.13903] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 01/17/2016] [Indexed: 05/03/2023]
Abstract
Nitric oxide (NO) is emerging as a key regulator of diverse plant cellular processes. A major route for the transfer of NO bioactivity is S-nitrosylation, the addition of an NO moiety to a protein cysteine thiol forming an S-nitrosothiol (SNO). Total cellular levels of protein S-nitrosylation are controlled predominantly by S-nitrosoglutathione reductase 1 (GSNOR1) which turns over the natural NO donor, S-nitrosoglutathione (GSNO). In the absence of GSNOR1 function, GSNO accumulates, leading to dysregulation of total cellular S-nitrosylation. Here we show that endogenous NO accumulation in Arabidopsis, resulting from loss-of-function mutations in NO Overexpression 1 (NOX1), led to disabled Resistance (R) gene-mediated protection, basal resistance and defence against nonadapted pathogens. In nox1 plants both salicylic acid (SA) synthesis and signalling were suppressed, reducing SA-dependent defence gene expression. Significantly, expression of a GSNOR1 transgene complemented the SNO-dependent phenotypes of paraquat resistant 2-1 (par2-1) plants but not the NO-related characters of the nox1-1 line. Furthermore, atgsnor1-3 nox1-1 double mutants supported greater bacterial titres than either of the corresponding single mutants. Our findings imply that GSNO and NO, two pivotal redox signalling molecules, exhibit additive functions and, by extension, may have distinct or overlapping molecular targets during both immunity and development.
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Affiliation(s)
- Byung-Wook Yun
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
- School of Applied Biosciences, College of Agriculture and Life Sciences, KyungPook National University, 80 Daehak-ro, Buk-gu, Daegu, 7201-701, Korea
| | - Michael J Skelly
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
| | - Minghui Yin
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
| | - Manda Yu
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
| | - Bong-Gyu Mun
- School of Applied Biosciences, College of Agriculture and Life Sciences, KyungPook National University, 80 Daehak-ro, Buk-gu, Daegu, 7201-701, Korea
| | - Sang-Uk Lee
- School of Applied Biosciences, College of Agriculture and Life Sciences, KyungPook National University, 80 Daehak-ro, Buk-gu, Daegu, 7201-701, Korea
| | - Adil Hussain
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
- School of Applied Biosciences, College of Agriculture and Life Sciences, KyungPook National University, 80 Daehak-ro, Buk-gu, Daegu, 7201-701, Korea
- Department of Agriculture, Abdul Wali Khan University, Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Steven H Spoel
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
| | - Gary J Loake
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3BF, UK
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Lee SU, Roh S, Kim YE, Park JI, Jeon B, Oh IH. Impact of disability status on suicide risks in South Korea: Analysis of National Health Insurance cohort data from 2003 to 2013. Disabil Health J 2016; 10:123-130. [PMID: 27492185 DOI: 10.1016/j.dhjo.2016.06.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 06/12/2016] [Accepted: 06/18/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND The elevated risk of suicide in people with disability has been suggested in the previous studies; however, the majority of study results have been limited to specific disability types, and there is a lack of research comparing the risk of suicide in people with disability in general. OBJECTIVES To examine the hazard ratio of suicide according to the presence and the types of disability and identify patterns in the results. METHODS In this study, we used National Health Insurance Service-National Sample Cohort data on 990,598 people, and performed analysis on the cause of death from 2003 through 2013. A Cox proportional hazard model was used to estimate the hazard ratio of suicide associated with disability and its types. RESULTS The hazard ratio of suicide among people with disability was 1.9-folds higher compared to people without disability. The risk of suicide among different disability types was higher in mental disorder, renal failure, brain injury and physical disability. The hazard ratio of suicide in people with disability was not varied by income. The time to death by suicide for people with disability from the onset of their disability was 39.8 months on average. CONCLUSIONS Our findings suggest that when the government plans suicide prevention policies, early and additional interventions specific to people with disability are needed. Disability due to mental disorder, renal failure should be given priority.
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Affiliation(s)
- Sang-Uk Lee
- Department of Medicine, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Sungwon Roh
- Department of Psychiatry, School of Medicine, Hanyang University, Seoul, South Korea
| | - Young-Eun Kim
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Jong-Ik Park
- Department of Psychiatry, School of Medicine, Kangwon National University, Chunchon, Korea
| | - Boyoung Jeon
- Department of Health Services Research, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - In-Hwan Oh
- Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea.
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Hussain A, Mun BG, Imran QM, Lee SU, Adamu TA, Shahid M, Kim KM, Yun BW. Nitric Oxide Mediated Transcriptome Profiling Reveals Activation of Multiple Regulatory Pathways in Arabidopsis thaliana. Front Plant Sci 2016; 7:975. [PMID: 27446194 PMCID: PMC4926318 DOI: 10.3389/fpls.2016.00975] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/20/2016] [Indexed: 05/18/2023]
Abstract
Imbalance between the accumulation and removal of nitric oxide and its derivatives is a challenge faced by all plants at the cellular level, and is especially important under stress conditions. Exposure of plants to various biotic and abiotic stresses causes rapid changes in cellular redox tone potentiated by the rise in reactive nitrogen species that serve as signaling molecules in mediating defensive responses. To understand mechanisms mediated by these signaling molecules, we performed a large-scale analysis of the Arabidopsis transcriptome induced by nitrosative stress. We generated an average of 84 and 91 million reads from three replicates each of control and 1 mM S-nitrosocysteine (CysNO)-infiltrated Arabidopsis leaf samples, respectively. After alignment, more than 95% of all reads successfully mapped to the reference and 32,535 genes and 55,682 transcripts were obtained. CysNO infiltration caused differential expression of 6436 genes (3448 up-regulated and 2988 down-regulated) and 6214 transcripts (3335 up-regulated and 2879 down-regulated) 6 h post-infiltration. These differentially expressed genes were found to be involved in key physiological processes, including plant defense against various biotic and abiotic stresses, hormone signaling, and other developmental processes. After quantile normalization of the FPKM values followed by student's T-test (P < 0.05) we identified 1165 DEGs (463 up-regulated and 702 down-regulated) with at least 2-folds change in expression after CysNO treatment. Expression patterns of selected genes involved in various biological pathways were verified using quantitative real-time PCR. This study provides comprehensive information about plant responses to nitrosative stress at transcript level and would prove helpful in understanding and incorporating mechanisms associated with nitrosative stress responses in plants.
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Affiliation(s)
- Adil Hussain
- Department of Agriculture, Abdul Wali Khan University MardanMardan, Pakistan
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Bong-Gyu Mun
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Qari M. Imran
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Sang-Uk Lee
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Teferi A. Adamu
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Muhammad Shahid
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Kyung-Min Kim
- Laboratory of Plant Molecular Breeding, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
| | - Byung-Wook Yun
- Laboratory of Plant Functional Genomics, School of Applied Biosciences, Kyungpook National UniversityDaegu, South Korea
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Roh S, Lee SU, Soh M, Ryu V, Kim H, Jang JW, Lim HY, Jeon M, Park JI, Choi S, Ha K. Mental health services and R&D in South Korea. Int J Ment Health Syst 2016; 10:45. [PMID: 27257434 PMCID: PMC4890259 DOI: 10.1186/s13033-016-0077-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 05/12/2016] [Indexed: 11/22/2022] Open
Abstract
World Health Organization has asserted that mental illness is the greatest overriding burden of disease in the majority of developed countries, and that the socioeconomic burden of mental disease will exceed that of cancer and cardiovascular disorders in the future. The life-time prevalence rate for mental disorders in Korea is reported at 27.6 %, which means three out of 10 adults experience mental disorders more than once throughout their lifetime. Korea’s suicide rate has remained the highest among Organization for Economic Cooperation and Development (OECD) nations for 10 consecutive years, with 29.1 people out of every 100,000 having committed suicide. Nevertheless, a comprehensive study on the mental health services and the Research and Development (R&D) status in Korea is hard to find. Against this backdrop, this paper examines the mental health services and the R&D status in Korea, and examines their shortcomings and future direction. The paper discusses the mental health service system, budget and human resources, followed by the mental health R&D system and budget. And, by a comparison with other OECD countries, the areas for improvement are discussed and based on that, a future direction is suggested. This paper proposes three measures to realize mid and long-term mental health promotion services and to realize improvements in mental health R&D at the national level: first, establish a national mental health system; second, forecast demand for mental health; and third, secure and develop mental health professionals.
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Affiliation(s)
- Sungwon Roh
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea ; Department of Psychiatry, Hanyang University School of Medicine, Seoul, South Korea
| | - Sang-Uk Lee
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea ; Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Minah Soh
- Department of Addiction Psychiatry, Seoul National Hospital, Seoul, South Korea
| | - Vin Ryu
- Department of Psychiatry, Seoul National Hospital, Seoul, South Korea
| | - Hyunjin Kim
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea
| | - Jung Won Jang
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea
| | - Hee Young Lim
- Division of Planning & Public Relations, Seoul National Hospital, Seoul, South Korea
| | - Mina Jeon
- Department of Mental Health Research, Seoul National Hospital, Seoul, South Korea
| | - Jong-Ik Park
- Department of Psychiatry, Kangwon National University School of Medicine, Chunchon, Korea
| | - SungKu Choi
- Department of Psychiatry, Seoul National Hospital, Seoul, South Korea
| | - Kyooseob Ha
- Seoul National Hospital, 389 Neungdong-ro, Gwangjin-gu, Seoul, 04933 South Korea
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Lee SU, Joo SY, Kim SK, Lee SH, Park SR, Jeong C. Real-time sonoelastography in the diagnosis of rotator cuff tendinopathy. J Shoulder Elbow Surg 2016; 25:723-9. [PMID: 26794853 DOI: 10.1016/j.jse.2015.10.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/14/2015] [Accepted: 10/18/2015] [Indexed: 02/01/2023]
Abstract
BACKGROUND Real-time sonoelastography can be used to assess tissue elasticity. The present study evaluated the relationship between tendon stiffness on sonoelastography and the magnetic resonance imaging (MRI) tendinosis grade in patients with rotator cuff tendinopathy. METHODS The study included 39 patients with chronic pain and no history of trauma or rotator cuff tear. The supraspinatus tendons were graded according to MRI findings (grade 0, normal; grade 1, mild tendinosis; grade 2, moderate tendinosis; grade 3, marked tendinosis), and the subcutaneous fat-to-tendon (Fat/T) and gel pad-to-tendon (Pad/T) strain ratios were assessed. We used the trend test to analyze the relationship of the MRI grade with the Fat/T strain ratio and the Pad/T strain ratio. RESULTS Of the 39 patients, 9 had grade 0, 17 had grade 1, 12 had grade 2, and 1 had grade 3 tendinosis. The mean real-time elastography Fat/T and Pad/T strain ratios were 2.92 ± 2.13 and 20.77 ± 21.78 in patients with grade 0 tendinosis, 4.08 ± 4.09 and 21.78 ± 17.16 in patients with grade 1 tendinosis, 13.48 ± 10.19 and 83.00 ± 48.26 in patients with grade 2 tendinosis, and 12.3 ± 0.00 and 16.58 ± 0.00 in patients with grade 3 tendinosis, respectively. The Fat/T and Pad/T strain ratios were positively associated with the MRI grade (P <.001). CONCLUSION The MRI tendinosis grade is associated with stiffness assessed using sonoelastography in patients with rotator cuff tendinopathy. Therefore, sonoelastography might be a useful diagnostic tool for supraspinatus tendinopathy. LEVEL OF EVIDENCE Level III; Diagnostic Study.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopaedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sun Young Joo
- Department of Orthopaedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sun Ki Kim
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sang-Ho Lee
- Department of Orthopaedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sung-Ryeoll Park
- Department of Orthopaedic Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Changhoon Jeong
- Department of Orthopaedic Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
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Lee SU, Kim MW, Kim JM. Ultrasound Diagnosis of Double Crush Syndrome of the Ulnar Nerve by the Anconeus Epitrochlearis and a Ganglion. J Korean Neurosurg Soc 2016; 59:75-7. [PMID: 26885291 PMCID: PMC4754593 DOI: 10.3340/jkns.2016.59.1.75] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/02/2014] [Accepted: 12/31/2014] [Indexed: 02/06/2023] Open
Abstract
Double compression of the ulnar nerve, including Guyon's canal syndrome associated with cubital tunnel syndrome caused by the anconeus epitrochlearis muscle, is a very rare condition. We present a case of double crush syndrome of the ulnar nerve at the wrist and elbow in a 55-year-old man, as well as a brief review of the literature. Although electrodiagnostic findings were consistent with an ulnar nerve lesion only at the elbow, ultrasonography revealed a ganglion compressing the ulnar nerve at the hypothenar area and the anconeus epitrochlearis muscle lying in the cubital tunnel. Careful physical examination and ultrasound assessment of the elbow and wrist confirmed the clinical diagnosis prior to surgery.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedics, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Min-Wook Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
| | - Jae Min Kim
- Department of Rehabilitation Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
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Lee SU, Chung YG, Kim SJ, Oh IH, Kim YS, Ju SH. Does size difference in allogeneic cancellous bone granules loaded with differentiated autologous cultured osteoblasts affect osteogenic potential? Cell Tissue Res 2013; 355:337-44. [PMID: 24346683 DOI: 10.1007/s00441-013-1760-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 10/30/2013] [Indexed: 11/27/2022]
Abstract
We study the efficacy of bone regeneration by using two differently sized allogeneic cancellous bone granules loaded with autologous cultured osteoblasts in a rabbit model. Critical-sized bone defects of the radial shaft were made in 40 New Zealand White rabbits. Small allogeneic bone granules (150-300 μm in diameter) loaded with cultured differentiated autologous osteoblasts were implanted into one forearm (SBG group) and large bone granules (500-710 μm) loaded with osteoblasts were implanted into the forearm of the other side (LBG group). Radiographic evaluations were performed at 3, 6, 9 and 12 weeks and histology and micro-CT image analysis were carried out at 6 and 12 weeks post-implantation. On radiographic evaluation, the LBG group showed a higher bone quantity index at 3 and 6 weeks post-implantation (P < 0.05) but statistical significance was lost at 9 and 12 weeks. The progression of biological processes of the SBG group was faster than that of the LBG group. On micro-CT image analysis, the LBG group revealed a higher total bone volume and surface area than the SBG group at 6 weeks (P < 0.05) but the difference decreased at 12 weeks and was without statistical significance. Histological evaluation also revealed faster progression of new bone formation and maturation in the SBG group. Thus, the two differently sized allogeneic bone granules loaded with co-cultured autologous osteoblasts show no differences in the amount of bone regeneration, although the SBG group exhibits faster progression of bone regeneration and remodeling. This method might therefore provide benefits, such as a short healing time and easy application in an injectable form, in a clinical setting.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, Korea
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Lee SU, Min KH, Jeong SY, Bae H, Lee SC. Calcium phosphate-reinforced photosensitizer-loaded polymer nanoparticles for photodynamic therapy. Chem Asian J 2013; 8:3222-9. [PMID: 24038917 DOI: 10.1002/asia.201300840] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [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: 06/26/2013] [Revised: 07/03/2013] [Indexed: 11/06/2022]
Abstract
Calcium phosphate-reinforced photosensitizer-loaded polymer nanoparticles have been developed for photodynamic therapy. Chlorin e6 (Ce6)-loaded core-shell-corona polymer micelles of poly(ethylene glycol)-b-poly(L-aspartic acid)-b-poly(L-phenylalanine) (PEG-PAsp-PPhe) were employed as template nanoparticles for mineralization with calcium phosphate (CaP). CaP deposition was performed by the electrostatic localization of calcium ions at the anionic PAsp middle shells and the subsequent addition of phosphate anions. CaP-reinforced nanoparticles exhibited enhanced stability. The CaP mineral layer effectively inhibited Ce6 release from the Ce6-loaded mineralized nanoparticles (Ce6-NP-CaP) at physiological pH value. At an acidic endosomal pH value of 5.0, Ce6 release was enhanced, owing to rapid dissolution of the CaP minerals. Upon irradiation of Ce6-NP-CaP-treated MCF-7 breast-tumor cells, the cell viability dramatically decreased with increasing irradiation time. The phototoxicity of Ce6-NP-CaP was much higher than that of free Ce6. Non-invasive optical-imaging results indicated that Ce6-NP-CaP exhibited enhanced tumor specificity compared with free Ce6 and Ce6-loaded non-mineralized polymer nanoparticles (Ce6-NP).
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Affiliation(s)
- Sang-Uk Lee
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 130-701 (Republic of Korea)
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Choi SW, Kim MK, Han SW, Han SH, Lee BK, Lee SU, Hur SH, Lim SW, Moon KW, Lee SG, Lee SH, Oh SK, Chea JG, Joo SJ, Jo MC, Hong KS, Ryu KH. Apparent treatment-resistant hypertension among elderly Korean hypertensives: an insight from the HIT registry. J Hum Hypertens 2013; 28:201-5. [PMID: 23985877 DOI: 10.1038/jhh.2013.76] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 07/09/2013] [Accepted: 07/10/2013] [Indexed: 11/09/2022]
Abstract
The aim of this study was to determine the clinical characteristics of patients with resistant hypertension (RH) and predictors among elderly Korean hypertensives. This prospective, multi-center, observational study evaluated 2439 elderly hypertensive patients between December 2008 and November 2011, who visited secondary hypertension clinics for high blood pressure (BP). Patients were categorized as resistant if their BP was ≥140/90 mm Hg and if they reported using antihypertensive medications from three different drug classes, including a diuretic or drugs from ≥4 antihypertensive drug classes, regardless of BP. Characteristics of patients with RH were compared with those of patients who were controlled with one or two antihypertensive medications after 6-month antihypertensive treatment. In comparison with 837 patients with non-RH, 404 patients with RH were more likely to be aware of their status of high BP before enrollment and have a high baseline systolic BP ≥160 mm Hg, microalbuminuria, high body mass index (BMI) ≥24 kg m(-2) and diabetes mellitus (DM). In drug-naive patients, awareness of hypertension at baseline was the only independent predictor for RH. In elderly Korean hypertensives, BMI (≥24 kg m(-2)), baseline systolic BP (≥160 mm Hg), microalbuminuria, DM and awareness of hypertension showed an association with RH.
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Affiliation(s)
- S-W Choi
- Division of Cardiology, Dongtan Sacred Heart Hospital, Hallym University, Hwaseong, Korea
| | - M-K Kim
- Division of Cardiology, Dongtan Sacred Heart Hospital, Hallym University, Hwaseong, Korea
| | - S W Han
- Department of Internal Medicine, Hangang Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - S H Han
- Division of Cardiology, Gachon University Gil Hospital, Incheon, Korea
| | - B K Lee
- Division of Cardiology, Gangnam Severance Hospital, Yonsei University, Seoul, Korea
| | - S U Lee
- Department of Internal Medicine, Gwangju Christian Hospital, Gwangju, Korea
| | - S-H Hur
- Division of Cardiology, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - S W Lim
- Division of Cardiology, Bundang Cha Hospital, Cha University, Seongnam, Korea
| | - K W Moon
- Division of Cardiology, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
| | - S G Lee
- Division of Cardiology, Ulsan University Hospital, Ulsan, Korea
| | - S H Lee
- Department of Internal Medicine, Dongkang Medical Center, Ulsan, Korea
| | - S K Oh
- Division of Cardiology, Wonkwang University School of Medicine and Hospital, Iksan, Korea
| | - J G Chea
- Division of Cardiology, Chonbuk National University Hospital, Jeonju, Korea
| | - S J Joo
- Division of Cardiology, Jeju National University Hospital, Jeju, Korea
| | - M C Jo
- Division of Cardiology, Chungbuk National University Hospital, Cheongju, Korea
| | - K-S Hong
- Division of Cardiology, Chooncheon Sacred Heart Hospital, Hallym University, Chooncheon, Korea
| | - K-H Ryu
- Division of Cardiology, Dongtan Sacred Heart Hospital, Hallym University, Hwaseong, Korea
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Kim SS, Lim J, Bang Y, Gal J, Lee SU, Cho YC, Yoon G, Kang BY, Cheon SH, Choi HJ. Licochalcone E activates Nrf2/antioxidant response element signaling pathway in both neuronal and microglial cells: therapeutic relevance to neurodegenerative disease. J Nutr Biochem 2012; 23:1314-23. [DOI: 10.1016/j.jnutbio.2011.07.012] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 06/08/2011] [Accepted: 07/27/2011] [Indexed: 10/14/2022]
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Abstract
A traumatic carpometacarpal joint dislocation of the thumb accounts for less than 1% of all hand injuries. Optimal treatment strategies for this injury are still a subject of debate. In this article, we report a case of bilateral thumb carpometacarpal joint dislocations: a unique combination of injuries. We believe our case is the second report of bilateral carpometacarpal joint dislocation regarding the thumb in English literature. It was successfully treated with closed reduction and percutaneous K-wires fixation on one side, and an open reduction and reconstruction of the ligament on the other side.
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Affiliation(s)
- Changhoon Jeong
- Department of Orthopaedic Surgery, Bucheon St Mary's Hospital, The Catholic University of Korea School of Medicine, Bucheon, Korea
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Lee SU, Jeong C, Park IJ. Arthroscopic fixation of displaced greater tuberosity fracture of the proximal humerus. Knee Surg Sports Traumatol Arthrosc 2012; 20:378-80. [PMID: 22057357 DOI: 10.1007/s00167-011-1748-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Accepted: 10/25/2011] [Indexed: 12/23/2022]
Abstract
Single-row fixation with two inverted mattress stitches was used to treat displaced fracture of the greater tuberosity of the proximal humerus. The inverted mattress sutures were passed through the bone-tendon junction of the fragment by suture passer and crossed over the bone fragment, locking the suture ends into the lateral cortex.
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Affiliation(s)
- Sang-Uk Lee
- Department of Orthopedic Surgery, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea
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Koo AN, Min KH, Lee HJ, Lee SU, Kim K, Kwon IC, Cho SH, Jeong SY, Lee SC. Tumor accumulation and antitumor efficacy of docetaxel-loaded core-shell-corona micelles with shell-specific redox-responsive cross-links. Biomaterials 2011; 33:1489-99. [PMID: 22130564 DOI: 10.1016/j.biomaterials.2011.11.013] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 11/10/2011] [Indexed: 10/14/2022]
Abstract
A robust core-shell-corona micelle bearing redox-responsive shell-specific cross-links was evaluated as a carrier of docetaxel (DTX) for cancer therapy. The polymer micelles of poly(ethylene glycol)-b-poly(L-lysine)-b-poly(L-phenylalanine) (PEG-PLys-PPhe) in the aqueous phase provided the three distinct functional domains: the PEG outer corona for prolonged circulation, the PLys middle shell for disulfide cross-linking, and the PPhe inner core for DTX loading. The shell cross-linking was performed by the reaction of disulfide-containing cross-linkers with Lys moieties in the middle shells. The shell cross-linking did not change the micelle size or the spherical morphology. The shell cross-linked micelles exhibited enhanced serum stability. The DTX release from the DTX-loaded disulfide cross-linked micelles (DTX-SSCLM) was facilitated by increasing the concentration of glutathione (GSH). At an intracellular GSH level, DTX release was facilitated due to the reductive cleavage of the disulfide cross-links in the shell domains. The in vivo tissue distribution and tumor accumulation of the DTX-SSCLM that were labeled with a near-infrared fluorescence (NIRF) dye, Cy5.5, were monitored in MDA-MB231 tumor-bearing mice. Non-invasive real-time optical imaging results indicated that the DTX-SSCLM exhibited enhanced tumor specificity due to the prolonged stable circulation in blood and the enhanced permeation and retention (EPR) effect compared with the DTX-loaded non-cross-linked micelles (DTX-NCLM). The DTX-SSCLM exhibited enhanced therapeutic efficacy in tumor-bearing mice compared with free DTX and DTX-NCLM. The domain-specific shell cross-linking that is described in this work may serve as a useful guidance for enhancing the antitumor therapeutic efficacy of various polymer micelles and nano-aggregates.
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Affiliation(s)
- Ahn Na Koo
- Department of Maxillofacial Biomedical Engineering & Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
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Lee SU, Park IJ, Kim HM, Jeong C, Oh JR. Fourth and fifth carpometacarpal fracture and dislocation of the hand: new classification and treatment. Eur J Orthop Surg Traumatol 2011. [DOI: 10.1007/s00590-011-0887-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Reports of coexisting avascular necrosis of more than one carpal bone are rare. We report coexisting avascular necrosis of the scaphoid and lunate in a 56-year-old woman with no history of using steroids or injury. We treated her with a radioscapholunate fusion with two angled 2.4 mm distal radius plates to stabilise the locking plate. At her 12-month follow up there was no evidence of non-union.
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Affiliation(s)
- Il-Jung Park
- Department of Orthopaedic Surgery, Bucheon St. Mary's Hospital, Catholic University of Korea, Bucheon, Korea
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Lee KH, Kim HM, Kim YS, Jeong C, Moon CW, Lee SU, Park IJ. Isolated fractures of the greater trochanter with occult intertrochanteric extension. Arch Orthop Trauma Surg 2010; 130:1275-80. [PMID: 20499242 DOI: 10.1007/s00402-010-1120-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2010] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Isolated fractures of the greater trochanter (GT) are relatively rare. The diagnosis can be done on routine radiographs, but it is difficult to fully define the geographic extent of these injuries. This study examined the pattern and extent of an injury shown by magnetic resonance imaging (MRI) and radionuclide bone scan (RBS) in patients whose plain radiographs revealed fractures limited to the GT. MATERIALS AND METHODS Between July 2004 and October 2008, 25 patients who displayed an isolated GT fracture on plain radiograph examination were examined by both MRI and RBS due to a suspicion of an extension into the intertrochanteric (ITC) region. The patients were then divided into two groups. Group A patients had an isolated fracture of GT, and group B patients had an occult fracture of ITC. RESULTS All 25 cases were caused by a low-energy injury and plain radiographs showed non-displaced or minimally displaced isolated GT fractures. For 22 of the 25 patients, the result agreed with MRI and RBS. However, three patients had focal increased uptake at the GT region only according to RBS and an extension of signal intensity into the ITC region according to MRI. Group A and B comprised 5 and 20 patients, respectively. Of the group B patients, 8 had fractures with MRI evidence of complete extension across the ITC region and 12 had incomplete extension. Eleven of the 12 incomplete types showed an extension more than half way to the medial cortex. Fifteen group B patients underwent an internal fixation using a two-hole dynamic hip screw. CONCLUSION Patients with an isolated fracture of GT can have a broader fracture extending into the ITC region than that diagnosed by standard radiographs. We recommend that all patients presenting with an isolated GT fracture on the plain radiographs should undergo MRI examination.
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Affiliation(s)
- Kee-Haeng Lee
- Department of Orthopedic Surgery, Bucheon St. Mary's Hospital, The Catholic University of Korea, 2 Sosa-Dong, Wonmi-Gu, Bucheon, Korea
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Kang JW, Lee YY, Kim CS, Lee SU. Coding order decision of B frames for rate-distortion performance improvement in single-view video and multiview video coding. IEEE Trans Image Process 2010; 19:2029-2041. [PMID: 20350858 DOI: 10.1109/tip.2010.2046792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The coding gain that can be achieved by improving the coding order of B frames in the H.264/AVC standard is investigated in this work. We first represent the coding order of B frames and their reference frames with a binary tree. We then formulate a recursive equation to find out the binary tree that provides a suboptimal, but very efficient, coding order. The recursive equation is efficiently solved using a dynamic programming method. Furthermore, we extend the coding order improvement technique to the case of multiview video sequences, in which the quadtree representation is used instead of the binary tree representation. Simulation results demonstrate that the proposed algorithm provides significantly better R-D performance than conventional prediction structures.
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Affiliation(s)
- Je-Won Kang
- Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
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