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Lee SH, Kim NK, Jung YJ, Cho SH, Choi O, Lee JH, Choi KS, Yoon H, Hur M, Park HD. Isolation and characterization of novel 3,3'-iminodipropionitrile biodegrading Paracoccus communis, from an industrial wastewater treatment bioreactor. Sci Total Environ 2024; 927:172099. [PMID: 38580115 DOI: 10.1016/j.scitotenv.2024.172099] [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] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/07/2024]
Abstract
Until now, bacteria able to degrade, 3,3'-iminodipropionitrile (IDPN), a neurotoxin that destroys vestibular hair cells, causing ototoxicity, culminating in irreversible movement disorders, had never been isolated. The aim of this study was to isolate a novel IDPN-biodegrading microorganism and characterize its metabolic pathway. Enrichment was performed by inoculating activated sludge from a wastewater treatment bioreactor that treated IDPN-contaminated wastewater in M9 salt medium, with IDPN as the sole carbon source. A bacterial strain with a spherical morphology that could grow at high concentrations was isolated on a solid medium. Growth of the isolated strain followed the Monod kinetic model. Based on the 16S rRNA gene, the isolate was Paracoccus communis. Whole-genome sequencing revealed that the isolated P. communis possessed the expected full metabolic pathway for IDPN biodegradation. Transcriptome analyses confirmed the overexpression of the gene encoding hydantoinase/oxoprolinase during the exponential growth phase under IDPN-fed conditions, suggesting that the enzyme involved in cleaving the imine bond of IDPN may promote IDPN biodegradation. Additionally, the newly discovered P. communis isolate seems to metabolize IDPN through cleavage of the imine bond in IDPN via nitrilase, nitrile hydratase, and amidase reactions. Overall, this study lays the foundation for the application of IDPN-metabolizing bacteria in the remediation of IDPN-contaminated environments.
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Affiliation(s)
- Sang-Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Na-Kyung Kim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea
| | - You-Jung Jung
- National Institute of Biological Resources, Environmental Research Complex, Incheon 22689, Republic of Korea
| | - Shin Hae Cho
- College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, OH, USA
| | - Onekyun Choi
- Department of Chemical Engineering, University of Toledo, Toledo, OH, USA
| | - Jeong-Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Ki-Seung Choi
- R&D Center, ECO CDI Cooperation, Ltd., 129, Cheongwonsandan 8-gil, Mado-myeon, Hwaseong-si, Gyeonggi-do 18543, Republic of Korea
| | - Hyeokjun Yoon
- National Institute of Biological Resources, Environmental Research Complex, Incheon 22689, Republic of Korea
| | - Moonsuk Hur
- National Institute of Biological Resources, Environmental Research Complex, Incheon 22689, Republic of Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea.
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Kang J, Cheon J, Yoon H, Kim N, Heo S. Adrenalectomy for the treatment of hypotension in a cat with phaeochromocytoma associated with caudal vena cava syndrome. J Small Anim Pract 2024; 65:352-356. [PMID: 38169034 DOI: 10.1111/jsap.13696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 10/16/2023] [Accepted: 12/06/2023] [Indexed: 01/05/2024]
Abstract
An 11-year-old spayed female, Persian cat was referred to the Jeonbuk Animal Medical Center for evaluation of a 2-month history of lethargy and anorexia. Physical examination revealed tachycardia and hypotension. Abdominal imaging via sonography and CT identified a right adrenal gland mass causing severe deviation and compression of the caudal vena cava. After stabilising the blood pressure and heart rate through positive inotropes and fluid therapy, right adrenalectomy was performed. Surgery confirmed the adrenal gland mass was severely compressing the caudal vena cava. Histopathological examination revealed that the mass was a pheochromocytoma. After adrenalectomy, blood pressure and heart rate stabilised and remained unaffected 8 months postsurgery. This report describes a rare case of an adrenal pheochromocytoma leading to caudal vena cava compression in a cat presenting with hypotension.
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Affiliation(s)
- J Kang
- Department of Veterinary Surgery, College of Veterinary Medicine, Jeonbuk National University, Iksan, 54596, South Korea
| | - J Cheon
- Department of Veterinary Surgery, College of Veterinary Medicine, Jeonbuk National University, Iksan, 54596, South Korea
| | - H Yoon
- Department of Veterinary Medical Imaging, College of Veterinary Medicine, Jeonbuk National University, Iksan, 54596, South Korea
| | - N Kim
- Department of Veterinary Surgery, College of Veterinary Medicine, Jeonbuk National University, Iksan, 54596, South Korea
| | - S Heo
- Department of Veterinary Surgery, College of Veterinary Medicine, Jeonbuk National University, Iksan, 54596, South Korea
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Lee S, Kim G, Park GM, Jeong J, Jung E, Lee BS, Jo E, Lee S, Yoon H, Jo KW, Kim SH, Lee J. Management of newborns and healthcare workers exposed to isoniazid-resistant congenital tuberculosis in the neonatal intensive care unit. J Hosp Infect 2024; 147:40-46. [PMID: 38432587 DOI: 10.1016/j.jhin.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/25/2024] [Accepted: 02/05/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Management of newborns and healthcare workers (HCWs) exposed to congenital tuberculosis (TB) in the neonatal intensive care unit (NICU) has been reported rarely. AIM To outline a contact investigation process for individuals exposed to congenital TB in the NICU and investigate nosocomial transmission. Additionally, to assess the efficacy and safety of window prophylaxis in exposed newborns. METHODS A baby, born at a gestational age of 28 + 1 weeks, was diagnosed with isoniazid-resistant congenital TB on the 39th day of admission to the level IV NICU. Newborns and HCWs exposed cumulatively for ≥8 h underwent contact investigation and follow-up for a year. FINDINGS Eighty-two newborns underwent contact investigation. All newborns displayed normal chest X-rays, and 42 hospitalized newborns tested negative for acid-fast bacilli stain and Xpert® MTB/RIF assay in their endotracheal sputum or gastric juices. Eighty received window prophylaxis: six of 75 on rifampin experienced mild adverse events, and none of the five on levofloxacin. After 12 weeks, five (6.1%) had a positive tuberculin skin test, all of whom had already received the Bacillus Calmette-Guérin vaccine and tested negative on TB interferon-gamma releasing assay. Of 119 exposed HCWs, three (2.5%) were diagnosed with latent TB infection and completed a four-month rifampin therapy. There was no active TB disease among exposed newborns and HCWs during a one-year follow-up. CONCLUSION Timely diagnosis of congenital TB is crucial for minimizing transmission among exposed neonates and HCWs in the NICU setting. In cases of isoniazid-resistant index patients, even premature newborns may consider the use of rifampin or levofloxacin for window prophylaxis.
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Affiliation(s)
- S Lee
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - G Kim
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - G-M Park
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - J Jeong
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - E Jung
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - B S Lee
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - E Jo
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - S Lee
- Office for Infection Control, Asan Medical Center, Seoul, South Korea
| | - H Yoon
- Department of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - K-W Jo
- Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - S-H Kim
- Office for Infection Control, Asan Medical Center, Seoul, South Korea; Department of Infectious Diseases, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - J Lee
- Department of Paediatrics, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea; Office for Infection Control, Asan Medical Center, Seoul, South Korea.
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Choi J, Min J, Kim D, Kim J, Kim J, Yoon H, Lee J, Jeong Y, Kim CY, Ko SH. Hierarchical 3D Percolation Network of Ag-Au Core-Shell Nanowire-Hydrogel Composite for Efficient Biohybride Electrodes. ACS Nano 2023; 17:17966-17978. [PMID: 37668160 DOI: 10.1021/acsnano.3c04292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Metal nanomaterials are highly valued for their enhanced surface area and electrochemical properties, which are crucial for energy devices and bioelectronics. However, their practical applications are often limited by challenges, such as scalability and dimensional constraints. In this study, we developed a synthesis method for highly porous Ag-Au core-shell nanowire foam (AACNF) using a one-pot process based on a simultaneous nanowelding synthesis method. The unique characteristics of AACNF as metal-based electrodes show the lowest density among metal-based electrodes while demonstrating high electrical conductivity (99.33-753.04 S/m) and mechanical stability. The AACNF's excellent mass transport properties enable multiscale hierarchical incorporation with functional materials including polymeric precursors and living cells. The enhanced mechanical stability at the nanowelded junctions allows AACNF-hydrogel composites to exhibit large stretching (∼700%) and 10,000 times higher electrical conductivity than hydrogel-nanowire composites without the junction. Large particles in the 1-10 μm scale, including fibroblast cells and exoelectrogenic microbes, are also successfully incorporated with AACNF. AACNF-based microbial fuel cells show high power density (∼330.1 W/m3) within the optimal density range. AACNF's distinctive ability to form a hierarchical structure with substances in various scales showcases its potential for advanced energy devices and biohybrid electrodes in the future.
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Affiliation(s)
- Joonhwa Choi
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - JinKi Min
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Dohyung Kim
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jin Kim
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jinsol Kim
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyeokjun Yoon
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jinwoo Lee
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Youngin Jeong
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
- Institute of Engineering Research, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea
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Park H, Park JJ, Bui PD, Yoon H, Grigoropoulos CP, Lee D, Ko SH. Laser-Based Selective Material Processing for Next-Generation Additive Manufacturing. Adv Mater 2023:e2307586. [PMID: 37740699 DOI: 10.1002/adma.202307586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/14/2023] [Indexed: 09/25/2023]
Abstract
The connection between laser-based material processing and additive manufacturing is quite deeply rooted. In fact, the spark that started the field of additive manufacturing is the idea that two intersecting laser beams can selectively solidify a vat of resin. Ever since, laser has been accompanying the field of additive manufacturing, with its repertoire expanded from processing only photopolymer resin to virtually any material, allowing liberating customizability. As a result, additive manufacturing is expected to take an even more prominent role in the global supply chain in years to come. Herein, an overview of laser-based selective material processing is presented from various aspects: the physics of laser-material interactions, the materials currently used in additive manufacturing processes, the system configurations that enable laser-based additive manufacturing, and various functional applications of next-generation additive manufacturing. Additionally, current challenges and prospects of laser-based additive manufacturing are discussed.
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Affiliation(s)
- Huijae Park
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Jung Jae Park
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Phuong-Danh Bui
- Laser and Thermal Engineering Lab, Department of Mechanical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam, 13120, South Korea
| | - Hyeokjun Yoon
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Costas P Grigoropoulos
- Laser Thermal Lab, Department of Mechanical Engineering, University of California at Berkeley, Berkeley, CA, 94720, USA
| | - Daeho Lee
- Laser and Thermal Engineering Lab, Department of Mechanical Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam, 13120, South Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
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Kato K, Yoon H, Raymond E, Hubner R, Shu Y, Pan Y, Park S, Ping L, Jiang Y, Zhang J, Wu X, Yao Y, Shen L, Kojima T, Lin CY, Wang L, Tao A, Peng Y, Li L, Xu J. 70O Randomized, global, phase III study of tislelizumab (TIS) + chemotherapy (chemo) vs chemo as first-line (1L) therapy for advanced or metastatic esophageal squamous cell carcinoma (ESCC) (RATIONALE-306): Asia subgroup. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Yoon KA, Kim WJ, Cho H, Yoon H, Ahn NH, Lee BH, Lee SH. Characterization of anti-microbial peptides and proteins from maggots of Calliphoridae and Sarcophagidae fly species (Diptera). Comp Biochem Physiol C Toxicol Pharmacol 2022; 259:109390. [PMID: 35661821 DOI: 10.1016/j.cbpc.2022.109390] [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: 04/04/2022] [Revised: 05/25/2022] [Accepted: 05/29/2022] [Indexed: 11/29/2022]
Abstract
Removal of infected wounds using maggots has been known for centuries. Early research has shown that the maggot exosecretion, whole body, and fecal waste products of Calliphoridae and Sarcophagidae species contain a variety of alkaline peptides capable of inhibiting bacterial growth. Since the wide application of antibiotics such as penicillin, a number of bacterial infections have become insensitive to antibiotic treatment. In many of these instances, maggot therapy has been successfully applied for the treatment of chronic wounds. To identify and compare the expression patterns of anti-microbial peptides (AMPs) from some dipteran species, transcriptome analyses were conducted for the maggots of 11 Calliphoridae and Sarcophagidae species. Species of the subfamily Calliphorinae showed relatively higher expression levels of AMPs and anti-microbial proteins compared with those of Luciliinae and Sarcophagidae species. Furthermore, among all of the dipteran species examined, Lucilia illustris exhibited the highest transcription levels of AMPs. Cecropin A2 and defensin, whose expression levels were the highest among the anti-microbial peptides, were synthesized to test their biological activity. The synthesized peptides showed anti-microbial activities without hemolytic activities. In particular, cecropin A2 of L. illustris exhibited the highest anti-microbial activity against all of the bacteria and fungi examined, thereby possessing the potential to be developed as a new alternative to antibiotics. This comparative transcriptomic study may provide new insights into anti-microbial compositions of some dipteran species.
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Affiliation(s)
- Kyungjae Andrew Yoon
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| | - Woo-Jin Kim
- EntoCode Co., Seoul 06028, Republic of Korea
| | - Hanna Cho
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Neung-Ho Ahn
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Byoung-Hee Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Republic of Korea
| | - Si Hyeock Lee
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Department of Agricultural Biology, Seoul National University, Seoul 08826, Republic of Korea.
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Yoon H, Jeong J, Lee H, Jang S. More than a single effect by a single point mutation: molecular dynamics simulation of NPC1. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322094086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Yoon H, Kang I, Kim Y, Yang K, Lee J, Jun J. P-202 Improvement of in vitro implantation competence in human trophoblastic spheroids and mouse blastocysts by extracellular vesicles from human follicular fluid. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.195] [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: 11/14/2022] Open
Abstract
Abstract
Study question
How do extracellular vesicles (EVs) from human follicular fluid (hFF) affect the implantation process?
Summary answer
The EVs from hFF support the migration of mouse blastocysts and improve the mRNA expression of implantation process in human trophoblastic spheroids and mouse blastocysts.
What is known already
The EVs in hFF contains proteins, mRNAs, and microRNAs (miRs) that can mediate intercellular communication. Some miRs were found to be enriched in EVs of hFF. It has been demonstrated that EVs play different and important roles in the reproductive process such as oocyte maturation, embryo development and implantation. However, the effects of EVs in hFF on the trophoblast migration of in vitro implantation competence remain unclear. We found and analyzed the enriched miRs in EVs of hFF and investigated the effects of EVs on the implantation competence using in vitro outgrowth models using human trophoblastic spheroids and mouse blastocysts.
Study design, size, duration
Mouse 2-cell embryos were collected and then further in vitro cultured up to blastocyst stage. We prepared spheroids with trophoblastic cells, JAr mixed JEG-3 cells (JmJ) of 1:1 ratio. For outgrowth assay, the culture dishes with fibronectin-coated were made 2 hrs before transferring trophoblastic spheroids and mouse blastocysts. After 72 hrs of outgrowth assay, the migration areas of trophoblasts were measured, and qRT-PCR and Western blot were analyzed.
Participants/materials, setting, methods
After collecting the hFF samples in IVF clinic, immediately the EVs were isolated using the conventional ultracentrifugation (UC) method, and stored at -80 °C. Amounts of specific miRNAs were analyzed to confirm the specific miRNA of EVs compared to hFF by qRT-PCR. Protein concentrations were determined and adjusted for supplementation volume.
Main results and the role of chance
The EVs from hFF were prepared by UC, and the size range of EVs were 20∼300 nm (average 136.9±5.6 nm; n = 10) in nanoparticle tracking analyzer. And the EVs were examined via transmission electron microscopy and Western blotting to the exosomal markers CD63, CD81, and TSG101. We conformed miRNAs that enriched in EVs from hFF such as miR10b, miR503, and miR654. In outgrowth assay with human trophoblastic spheroids, the migration areas did not show a difference between control and supplementation of EVs groups. However, the expressions of adhesion molecules ( ITGαV, β3 and β5 ) were increased in supplementation of 2.5 μg/mL EVs compared to control group. In mouse blastocysts, supplementation of EVs significantly increased the trophoblast migration areas than those of control group without EVs. Also the expression patterns of Oct4, Lif, PLGF5 were higher in supplementation of EVs compared to control group. Taken together, EVs from hFF could support the migration of human trophoblastic spheroids and mouse blastocysts in vitro.
Limitations, reasons for caution
Characterization of EVs from hFF was not fully evaluated in various proteins, hormones and nucleic acids. The effects of EVs in hFF on implantation process should be evaluated in primary trophoblastic cells and in vivo mouse model of embryo transfer.
Wider implications of the findings
This study demonstrated that the EVs of hFF could improve the implantation and migration of trophoblasts in vitro. These findings suggest that the EVs of hFF could apply to increase the implantation and the pregnancy rate in human IVF-ET program.
Trial registration number
not applicable
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Affiliation(s)
- H Yoon
- Graduate School of Eulji University, Department of Senior Healthcare , Seong-Nam, Korea- South
| | - I Kang
- Graduate School of Eulji University, Department of Biomedical Laboratory Science , Seong-Nam, Korea- South
| | - Y.J Kim
- Suji Maria Fertility Clinic, Research Center , Yongin, Korea- South
| | - K.M Yang
- Suji Maria Fertility Clinic, Research Center , Yongin, Korea- South
| | - J Lee
- Graduate School of Eulji University, Department of Biomedical Laboratory Science , Seong-Nam, Korea- South
| | - J.H Jun
- Graduate School of Eulji University, Department of Senior Healthcare , Seong-Nam, Korea- South
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Trinh HP, Lee SH, Kim NK, Yoon H, Jeong G, Jung YJ, Hur M, Lee BH, Park HD. Enrichment of Ca. Jettenia in sequencing batch reactors operated with low nitrogen loading rate and high influent nitrogen concentration. Bioresour Technol 2022; 352:127079. [PMID: 35367324 DOI: 10.1016/j.biortech.2022.127079] [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] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
To apply the anammox processes into the mainstream of domestic wastewater treatment plants, two laboratory-scale sequence batch reactors have been developed and used with two different activated sludges seeded in each sequence batch reactors with gradually increases influent total nitrogen concentrations under low nitrogen loading rates. During 320 days of operation, both sequence batch reactors showed high specific anammox activity (0.68 - 0.75 kgN kg-1VSS d-1) and a nitrogen removal efficiency of 97.50%. To monitor changes in microbial community dynamics during enrichment, high-throughput sequencing analysis was performed. Members taxonomically affiliated with Candidatus Jettenia were markedly enriched and predominant in both sequence batch reactors in response to the increasing influent total nitrogen concentrations. These results suggest that Candidatus Jettenia might be a prominent anammox genus under low nitrogen loading rate with high total nitrogen concentration conditions and could be suitably applied to the mainstream process of domestic wastewater treatment systems.
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Affiliation(s)
- Hoang Phuc Trinh
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea
| | - Sang-Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea
| | - Na-Kyung Kim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Garam Jeong
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - You-Jung Jung
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Moonsuk Hur
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Byoung-Hee Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea.
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Han VC, Yu NH, Yoon H, Ahn NH, Son YK, Lee BH, Kim JC. Identification, Characterization, and Efficacy Evaluation of Bacillus velezensis for Shot-Hole Disease Biocontrol in Flowering Cherry. Plant Pathol J 2022; 38:115-130. [PMID: 35385917 PMCID: PMC9343898 DOI: 10.5423/ppj.oa.01.2022.0004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Though information exists regarding the pathogenesis of the shot-hole disease (SH) in flowering cherry (FC), there has been a lack of research focusing on SH management. Therefore, here, we investigated the inhibitory activities of antagonistic bacteria against SH pathogens both in vitro and in vivo as well as their biochemical characteristics and bioactive compounds. Two biosurfactant-producing bacterial antagonists, identified as Bacillus velezensis strains JCK-1618 and JCK-1696, exhibited the best effects against the growth of both bacterial and fungal SH pathogens in vitro through their cell-free culture filtrates (CFCFs). These two strains also strongly inhibited the growth of the pathogens via the action of their antimicrobial diffusible compounds and antimicrobial volatile organic compounds (VOCs). Crude enzymes, solvent extracts, and biosurfactants of the two strains exhibited antimicrobial activities. Liquid chromatography/electrospray ionization time-of-flight mass spectrometric analysis of the partially purified active fractions revealed that the two antagonists produced three cyclic lipopeptides, including iturin A, fengycin A, and surfactin, and a polyketide, oxydifficidin. In a detached leaf assay, pre-treatment and co-treatment of FC leaves with the CFCFs led to a large reduction in the severity of the leaf spots caused by Epicoccum tobaicum and Bukholderia contaminans, respectively. In addition, the two antagonists produced indole-3-acetic acid, siderophore, and a series of hydrolytic enzymes, along with the formation of a substantial biofilm. To our knowledge, this is the first report of the antimicrobial activities of the diffusible compounds and VOCs of B. velezensis against the SH pathogens and their efficiency in the biocontrol of SH.
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Affiliation(s)
- Viet-Cuong Han
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
| | - Nan Hee Yu
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Korea
| | - Neung-Ho Ahn
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Korea
| | - Youn Kyoung Son
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Korea
| | - Byoung-Hee Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon 22689, Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
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12
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Han VC, Yu NH, Park AR, Yoon H, Son YK, Lee BH, Kim JC. First Report of Shot-Hole on Flowering Cherry Caused by Burkholderia contaminans and Pseudomonas syringae pv. syringae. Plant Dis 2021; 105:3795-3802. [PMID: 34142849 DOI: 10.1094/pdis-03-21-0547-sc] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Shot-hole disease (SH) is one of the most common and important diseases affecting flowering cherry (FC; Prunus × yedoensis Matsumura; Somei-yoshino) trees in South Korea every year, resulting in premature defoliation and reduced flowering in the following year. However, pathogens associated with the disease remain unknown, which has rendered disease management challenging. Here, the pathogens associated with SH, their biochemical characteristics, and their host range were elucidated. Detached-leaf and in planta assays revealed that two biofilm-forming bacteria-namely, Burkholderia contaminans and Pseudomonas syringae pv. syringae-caused SH of FC trees. These pathogens were recorded for the first time as the causes of SH of FC trees in South Korea. Additionally, the two pathogens induced similar disease symptoms in several stone fruit belonging to the genus Prunus, including peach (Prunus persica), plum (P. salicina), and apricot (P. mume), with peach being the most susceptible. These results indicate that B. contaminans and P. syringae pv. syringae caused SH on FC trees and presented a broad spectrum of hosts. Furthermore, Xanthomonas arboricola pv. pruni, the causative agent of leaf spot on stone fruit, incited brown spots and shot holes on FC leaves. Therefore, FC trees are susceptible to infections by various pathogenic bacteria, including B. contaminans, P. syringae pv. syringae, and X. arboricola pv. pruni. These findings will be of great importance as a reference for effective management of SH in the face of possible cross-infection between Prunus spp. in the future.
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Affiliation(s)
- Viet-Cuong Han
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, 77 Yong-bong-ro, Buk-gu, Gwangju 61186, South Korea
| | - Nan Hee Yu
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, 77 Yong-bong-ro, Buk-gu, Gwangju 61186, South Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, 77 Yong-bong-ro, Buk-gu, Gwangju 61186, South Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42 Hwangyeong-ro, Seo-gu, Incheon 22689, South Korea
| | - Youn Kyoung Son
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42 Hwangyeong-ro, Seo-gu, Incheon 22689, South Korea
| | - Byoung-Hee Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42 Hwangyeong-ro, Seo-gu, Incheon 22689, South Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally-Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, 77 Yong-bong-ro, Buk-gu, Gwangju 61186, South Korea
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13
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Kim NK, Lee SH, Yoon H, Jeong G, Jung YJ, Hur M, Lee BH, Park HD. Microbiome degrading linear alkylbenzene sulfonate in activated sludge. J Hazard Mater 2021; 418:126365. [PMID: 34329019 DOI: 10.1016/j.jhazmat.2021.126365] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/20/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
As the most widely used anionic surfactant, linear alkylbenzene sulfonate (LAS) requires biological alkane degradation when it is treated using an activated sludge (AS) process in a wastewater treatment plant because of its structural carboxylic unavailability. As consumption of LAS is gradually increasing, LAS loading into the WWTP is accordingly increasing. However, fewer studies have examined the involvement of the AS microbial community in the LAS degradation. In this study, metagenomic approaches were used to define microbiomes involved in LAS degradation in AS, with a particular focus on ω-hydroxylation. The abundance and diversity of alkane-degrading genes were investigated, and these genes were integrated with reconstructed metagenome-assembled genomes (MAGs). Additionally, the association of functional genes and MAGs with respect to LAS degradation was investigated. The results showed that alkB and cytochrome P450 genes were only shared within specific MAGs. Unique sets of genes with diverse abundances were detected in each sample. The MAGs with the alkB and cytochrome P450 genes were strongly associated with the other MAGs and involved in positive commensal interactions. The findings provided significant insights into how the AS microbiomes, which have continuously treated anionic surfactants for decades, potentially metabolize LAS and interact with commensal bacteria.
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Affiliation(s)
- Na-Kyung Kim
- Research Institute of Engineering and Technology, Korea University, Seoul, South Korea
| | - Sang-Hoon Lee
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Garam Jeong
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - You-Jung Jung
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Moonsuk Hur
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Byoung-Hee Lee
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, South Korea.
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14
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Catenacci D, Koshiji Rosales M, Chung H, Yoon H, Moehler M, Kang Y, Shen L. P-138 Margetuximab combined with anti-PD-1 (retifanlimab) or anti-PD-1/LAG-3 (tebotelimab) +/- chemotherapy in first-line therapy of advanced/metastatic HER2+ gastroesophageal junction or gastric cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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15
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Awala SI, Gwak JH, Kim YM, Kim SJ, Strazzulli A, Dunfield PF, Yoon H, Kim GJ, Rhee SK. Verrucomicrobial methanotrophs grow on diverse C3 compounds and use a homolog of particulate methane monooxygenase to oxidize acetone. ISME J 2021; 15:3636-3647. [PMID: 34158629 PMCID: PMC8630023 DOI: 10.1038/s41396-021-01037-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 11/26/2022]
Abstract
Short-chain alkanes (SCA; C2-C4) emitted from geological sources contribute to photochemical pollution and ozone production in the atmosphere. Microorganisms that oxidize SCA and thereby mitigate their release from geothermal environments have rarely been studied. In this study, propane-oxidizing cultures could not be grown from acidic geothermal samples by enrichment on propane alone, but instead required methane addition, indicating that propane was co-oxidized by methanotrophs. “Methylacidiphilum” isolates from these enrichments did not grow on propane as a sole energy source but unexpectedly did grow on C3 compounds such as 2-propanol, acetone, and acetol. A gene cluster encoding the pathway of 2-propanol oxidation to pyruvate via acetol was upregulated during growth on 2-propanol. Surprisingly, this cluster included one of three genomic operons (pmoCAB3) encoding particulate methane monooxygenase (PMO), and several physiological tests indicated that the encoded PMO3 enzyme mediates the oxidation of acetone to acetol. Acetone-grown resting cells oxidized acetone and butanone but not methane or propane, implicating a strict substrate specificity of PMO3 to ketones instead of alkanes. Another PMO-encoding operon, pmoCAB2, was induced only in methane-grown cells, and the encoded PMO2 could be responsible for co-metabolic oxidation of propane to 2-propanol. In nature, propane probably serves primarily as a supplemental growth substrate for these bacteria when growing on methane.
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Affiliation(s)
- Samuel Imisi Awala
- Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
| | - Joo-Han Gwak
- Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
| | - Yong-Man Kim
- Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea
| | - So-Jeong Kim
- Geologic Environment Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, 34132, Republic of Korea
| | - Andrea Strazzulli
- Department of Biology, University of Naples "Federico II", Complesso Universitario Di Monte S. Angelo, Via Cupa Nuova Cinthia 21, 80126, Naples, Italy
| | - Peter F Dunfield
- Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB, T2N 1N4, Canada
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42 Hwangyeong-ro, Seo-gu, Incheon, 22689, Republic of Korea
| | - Geun-Joong Kim
- Department of Biological Sciences and Research Center of Ecomimetics, College of Natural Sciences, Chonnam National University, Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Sung-Keun Rhee
- Department of Biological Sciences and Biotechnology, Chungbuk National University, 1 Chungdae-ro, Seowon-Gu, Cheongju, 28644, Republic of Korea.
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Park H, Jo U, Kim Y, Kim K, Yu S, Yoon H, Kwon S, Park J, Kim M, Lee J, Koh S. 686 A psoriasis mouse model with persistent skin lesions and comorbidities. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Jang Y, Choi E, Rhee MK, Yoon H, Park NS, Chiriboga DA. Older Korean Americans' concern about Alzheimer's disease: the role of immigration-related factors and objective and subjective cognitive status. Aging Ment Health 2021; 25:807-813. [PMID: 32003243 PMCID: PMC7392805 DOI: 10.1080/13607863.2020.1720596] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 12/20/2019] [Accepted: 01/18/2020] [Indexed: 10/25/2022]
Abstract
Objectives: The present study examined the associations between immigration-related factors and objective and subjective cognitive status with older Korean Americans' concern about developing Alzheimer's Disease (AD). It was hypothesized that (1) AD concern would be associated with immigration-related factors and (2) self-rated cognitive status would mediate the relationship between cognitive performance (Mini Mental State Examination (MMSE) scores) and concern about AD.Method: Using data from the Study of Older Korean Americans (n = 2061, mean age = 73.2; 66.8% female), the direct and indirect effect models were tested.Results: Korean American immigrants with a higher level of acculturation had better cognitive performance, more positive self-ratings of cognitive status, and a lower level of concern about AD. Both poor cognitive performance and negative self-ratings of cognitive status were associated with increased concern about AD. Supporting the mediation hypothesis, the indirect effect of cognitive performance on AD concern through self-rated cognitive status was significant (bias corrected 95% confidence interval for the indirect effect = -.012, -.003).Conclusion: The mediation model not only helps us better understand the psychological mechanisms that underlie the link between cognitive status and AD concern but also highlights the potential importance of subjective perceptions about cognitive status as an avenue for interventions.
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Affiliation(s)
- Yuri Jang
- Edward R. Roybal Institute on Aging, Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California, USA
| | - E. Choi
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - M. K. Rhee
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - H. Yoon
- School of Social Work, Texas State University, San Marcos, Texas, USA
| | - N. S. Park
- School of Social Work, University of South Florida, Tampa, FL, USA
| | - D. A. Chiriboga
- Department of Child and Family Studies, University of South Florida, Tampa, FL, USA
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18
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Ham S, Yoon H, Park JM, Park YG. Optimization of Fermentation Medium for Indole Acetic Acid Production by Pseudarthrobacter sp. NIBRBAC000502770. Appl Biochem Biotechnol 2021; 193:2567-2579. [PMID: 33783697 DOI: 10.1007/s12010-021-03558-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/22/2021] [Indexed: 11/24/2022]
Abstract
Indole acetic acid (IAA) has been an important compound for plant growth and is widely known to be produced by plant growth-promoting rhizobacteria (PGPR). The isolate producing the maximum amount of IAA from the Korea shooting range soil was identified as Pseudarthrobacter sp. NIBRBAC000502770, using 16S rRNA gene sequencing. IAA production was determined in Luria-Bertani (LB) broth and optimized using different temperatures, agitation rates, L-tryptophan concentrations, carbon and nitrogen sources, and inorganic salts. The strain NIBRBAC000502770 showed better production of IAA at temperature 30 °C (29.47 mg·L-1) and at an agitation rate of 200 rpm (32.65 mg·L-1). Maltose (0.5%) was found to be the best carbon source for the strain (yielding 36.48 mg·L-1 IAA). IAA yield was 19.17 mg·L-1 and 24.73 mg·L-1 at 1% yeast extract and 1% tryptone as nitrogen sources, respectively. qRT-PCR showed the transcript levels of amiE and aldH genes, which had been predicted to encode indole-3-acetamide hydrolase and indole-3-acetaldehyde dehydrogenase, to be significantly upregulated in response to tryptophan. This study has examined that NIBRBAC000502770 has significant effects as a biological agent such as plant growth promotion, and development of optimal medium could significantly reduce the cost of mass production of microorganisms.
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Affiliation(s)
- Seunghee Ham
- National Institute of Biological Resources (NIBR), 1008-11, Sangnam-ro, Sangnam-myeon, Miryang-si, 50452, Republic of Korea
| | - Hyeokjun Yoon
- National Institute of Biological Resources (NIBR), 1008-11, Sangnam-ro, Sangnam-myeon, Miryang-si, 50452, Republic of Korea
| | - Jeong-Mi Park
- National Institute of Biological Resources (NIBR), 1008-11, Sangnam-ro, Sangnam-myeon, Miryang-si, 50452, Republic of Korea
| | - Yoo Gyeong Park
- National Institute of Biological Resources (NIBR), 1008-11, Sangnam-ro, Sangnam-myeon, Miryang-si, 50452, Republic of Korea.
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19
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Han VC, Yu NH, Yoon H, Son YK, Lee BH, Kim JC. First Report of Epicoccum tobaicum Associated with Leaf Spot on Flowering Cherry in South Korea. Plant Dis 2021; 105:2734. [PMID: 33461318 DOI: 10.1094/pdis-12-20-2711-pdn] [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: 06/12/2023]
Abstract
Flowering cherry (FC, Prunus x yedoensis Matsumura; Somei-yoshino cherry) is an ornamental tree, planted across South Korea and producing stunning flowers in spring. The seasonal blooms are annually celebrated during cherry blossom festivals in many locations across the country. The leaf spot disease is among the most common and important diseases affecting FC trees every year, resulting in premature defoliation and reduced flowering of cherry blossoms in the following year. In May 2018, brown spots (2 to 5 mm), circular to irregular and with dark borders were observed on FC leaves in Hadong, Gyeongsangnamdo, South Korea (35°07'48.9"N, 127°46'53.8"E), with a disease incidence of 55%. Single lesions often coalesced and were sometimes perforated, leaving shot holes. Sampled leaves were surface sterilized with 1% NaOCl for 1 min and 70% ethanol for 30 s, and then rinsed twice with sterile distilled water. About 2-mm-long infected leaf pieces from the margins of lesions were put onto water agar (WA, 1.5% agar) plates and incubated at 25oC for 72 h. Mycelia grown from symptomatic tissue were transferred to PDA plates, and five similar fungal isolates were obtained from hyphal tips. They produced a strong reddish-orange diffusible pigment on PDA after 5 d and exudates after 8 d. Conidia were globular to pear-shaped, dark, verrucose, multicellular, and 14.8 to 23.5 μm in diameter (av. = 18.7 μm, n = 30) for isolate JCK-CSHF10. These morphological characteristics were consistent with the Epicoccum genus. Three loci, ITS, tub2, and rpb2, from three isolates JCK-CSHF8, JCK-CSHF9, and JCK-CSHF10 were amplified using the primer pairs ITS1F/LR5 (Gardes and Bruns 1993; Vilgalys and Hester 1990), Btub2Fd/Btub4Rd (Woudenberg et al. 2009), and RPB2-5F2/RPB2-7cR (Liu et al. 1999; Sung et al. 2007), respectively. The ITS, tub2, and rpb2 sequences of the three isolates were deposited in Genbank (MW368668-MW368670, MW392083-MW392085, and MW392086-MW392088, respectively), showing 99.6 to 100% identity to E. layuense (E33), a later synonym for E. tobaicum (Hou et al. 2020). The phylogenetic tree using concatenated sequences of the three loci placed the three isolates in a cluster of E. tobaicum (CBS 232.59, CGMCC 3.18362, and CBS 384.36; Hou et al. 2020). Taken together, the three isolates were identified as E. tobaicum. The pathogenicity of JCK-CSHF10 was tested on 15 healthy leaves on three FC trees (cv. Somei-yoshino, 1.2 m in height) kept in a greenhouse. Five-mm-diameter plugs from 7-d-old fungal cultures grown on PDA or mycelia-free PDA plugs as controls were placed on the abaxial side of a leaf at three points, previously wounded by a sterile needle (Zlatković et al. 2016). Inoculation sites were covered with moist cotton plugs. Trees were then covered with a clear plastic bag and maintained in high humidity at 25oC in darkness for 24 h, followed by a 12-h photoperiod. Brown spots appeared on inoculated leaves after 7 d, identical to those observed in the field, while control leaves remained symptomless. This experiment was repeated three times. A fungus with the same morphology as JCK-CSHF10 was recovered from lesions, thus confirming Koch's postulates. E. layuense (syn. E. tobaicum) has been reported as a leaf spot-causing agent on Perilla sp. (Chen et al. 2017) and Camellia sinensis (Chen et al. 2020). To date, there is no report on the occurrence of E. tobaicum from leaf spots on FC. To our knowledge, this is the first report of E. tobaicum causing leaf spot on FC in South Korea.
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Affiliation(s)
- Viet-Cuong Han
- Chonnam National University College of Agriculture and Life Sciences, 98413, Gwangju, Korea (the Republic of);
| | - Nan Hee Yu
- Chonnam National University College of Agriculture and Life Sciences, 98413, Gwangju, Korea (the Republic of);
| | - Hyeokjun Yoon
- National Institute of Biological Resources, 123590, Incheon, Korea (the Republic of);
| | - Youn Kyoung Son
- National Institute of Biological Resources, 123590, Incheon, Korea (the Republic of);
| | - Buoung Hee Lee
- National Institute of Biological Resources, 123590, Incheon, Korea (the Republic of);
| | - Jin-Cheol Kim
- Chonnam National University College of Agriculture and Life Sciences, 98413, 77 Yongbong-ro, Buk-gu, Gwangju, Korea (the Republic of), 61186;
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20
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Lee H, Heo SG, Bae Y, Lee H, Kim J, Yoon H. Multiple guidance of light using asymmetric micro prism arrays for privacy protection of device displays. Opt Express 2021; 29:2884-2892. [PMID: 33726475 DOI: 10.1364/oe.415302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
With increasing use of mobile displays outdoors, privacy-related issues have come to the fore. Therefore, in this study, we proposed a novel concept using directionally guided light transmission using double-sided asymmetric prism arrays for fabricating a privacy protection film for digital displays. The proposed film allows only the user in front of the display to see its contents using dual refraction in a prism array. Otherwise, when the display is viewed at an angle, it is difficult to recognize the contents due to the overlap of different letters. The optical path was analysed through ray-tracing simulations, and the performance of the film was quantified using an optical character recognition (OCR) method. To further enhance the effectiveness of the film, a metal film was applied on the vertical face of the micro prism arrays using an oblique deposition method. This metal-coated double-sided prism array film showed superior privacy-protecting performance compared to a conventional method based on the micro-louver structure.
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Abstract
Patients with cleidocranial dysplasia (CCD) caused by mutations in RUNX2 have severe dental anomalies, including delayed or absent eruption of permanent teeth. This requires painful and expensive surgical/orthodontic intervention because of the absence of medicine for this condition. Here, we demonstrate that nicotinamide, a vitamin B3 and class III histone deacetylase inhibitor, significantly improves delayed tooth eruption in Runx2+/- mice, a well-known CCD animal model, through the restoration of decreased osteoclastogenesis. We also found that Csf1 mRNA and protein levels were significantly reduced in Runx2+/- osteoblasts as compared with wild type whereas RANKL and OPG levels had no significant difference between wild type and Runx2+/- osteoblasts. The nicotinamide-induced restoration of osteoclastogenesis of bone marrow-derived macrophages in Runx2+/- mice was due to the increased expression of RUNX2 and CSF1 and increased RANKL/OPG ratio. RUNX2 directly regulated Csf1 mRNA expression via binding to the promoter region of the Csf1 gene. In addition, nicotinamide enhanced the RUNX2 protein level and transacting activity posttranslationally with Sirt2 inhibition. Taken together, our study shows the potential and underlying molecular mechanism of nicotinamide for the treatment of delayed tooth eruption by using the Runx2+/- murine model, suggesting nicotinamide as a candidate therapeutic drug for dental abnormalities in patients with CCD.
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Affiliation(s)
- H Yoon
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - H J Kim
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - H R Shin
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - B S Kim
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - W J Kim
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - Y D Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - H M Ryoo
- Department of Molecular Genetics and Pharmacology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
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22
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Abstract
Multiple sclerosis (MS) is an inflammatory disease of the central nervous system driven by autoreactive lymphocytes. Due to its close contact with the gut-associated lymphoid tissue, the intestinal microbiota and/or their metabolites may be one of the factors that influence the activation of autoreactive lymphocytes. This article summarizes and discusses the current research efforts to characterize the microbiome of MS patients using human material. In addition, we present research studies that utilized classical or humanized animal models to determine the influence of certain microbiota species or compositions of microbiota on the immune system and disease progression and to define possible causal associations.
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Affiliation(s)
- L A Gerdes
- Institut für Klinische Neuroimmunologie und Biomedizinisches Zentrum, LMU Klinikum München, Großhaderner Str. 9, 82152, Planegg-Martinsried, Deutschland
| | - H Yoon
- Institut für Klinische Neuroimmunologie und Biomedizinisches Zentrum, LMU Klinikum München, Großhaderner Str. 9, 82152, Planegg-Martinsried, Deutschland
| | - A Peters
- Institut für Klinische Neuroimmunologie und Biomedizinisches Zentrum, LMU Klinikum München, Großhaderner Str. 9, 82152, Planegg-Martinsried, Deutschland.
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Jung S, Jeon C, Choi J, Hyun D, Lee H, Kwon K, Yoon H. Clinical pathological association with breast cancer gene analysis through next generation sequencing. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30742-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Yoon H, Fuchs C, Özgüroğlu M, Bang Y, Bartolomeo MD, Mandala M, Ryu M, Fornaro L, Olesinski T, Caglevic C, Chung H, Muro K, Cutsem EV, Elme A, Thuss-Patience P, Chau I, Ohtsu A, Wang A, Bhagia P, Lin J, Shih C, Shitara K. O-12 KEYNOTE-061: Response to subsequent therapy following second-line pembrolizumab or paclitaxel in patients with advanced gastric or gastroesophageal junction adenocarcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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25
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Walden D, Sonbol M, Borad M, Petty SB, Yoon H, Bekaii-Saab T, Ahn D. P-91 A retrospective analysis of maintenance strategies in metastatic gastric and gastroesophageal cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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26
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Catenacci D, Rosales MK, Chung H, Yoon H, Shen L, Moehler M, Kang Y. P-342 Margetuximab combined with anti-PD-1 (MGA012) or anti-PD-1/LAG-3 (MGD013) +/- chemotherapy in first-line therapy of advanced/metastatic HER2+ gastroesophageal junction or gastric cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Koo BS, Eun S, Shin K, Yoon H, Hong CL, Kim DH, Hong S, Kim YG, Lee CK, Yoo B, Oh JS. OP0023 PREDICTION OF REMISSION FOR EACH BIOLOGICS BASED ON PATIENT’S CLINICAL INFORMATION BEFORE STARTING BIOLOGICS USING EXPLAINABLE ARTIFICIAL INTELLIGENCE: DATA FROM THE KOREAN COLLEGE OF RHEUMATOLOGY BIOLOGICS REGISTRY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Many studies have identified predictive factors of response to biologics in patients wirh rheumatoid arthritis (RA). However, there is still a lack in using them in daily clinical practice. Therefore, it is necessary to develop a method that can assist the physician in selecting effective biologics.Objectives:The purpose of this study is to establish machine learning model that predicts remission in patients treated with biologics using data of RA patients from the Korean College of Rheumatology Biologics (KOBIO) registry, and to identify the important features that have the most influence on the response to biologics using explainable artificial intelligence (AI).Methods:A total of 1,527 patients who started with biologics such as etanercept, adalimumab, golimumab, infliximab, abatacept, and tocilizumab from December 2012 to June 2019 were enrolled. Remission was predicted using 46 variables corresponding to baseline profiles at the starting of each biologics. We used five machine learning methods such as lasso, ridge, SVM, random forest, and XGBoost. For explainability of those models, we used Shapley plot to interpret the feature importance for each biologics.Results:In all machine learning methods, the accuracy and the area under the receiver operating characteristic (AUROC) were 57.2%~74.5%, 0.547~0.747, respectively (Table 1). The accuracy and AUROC of each biologics were similar between machine learning methods. Figure 2 showed interpretation of feature importance with the Shapley plot for remission. The most important feature was age in adalimumab (younger were closer to remission), daily corticosteroid dose in etanercept, golimumab, and all TNF inhibitors (using fewer doses daily were closer to remission), baseline erythrocyte sedimentation rate in infliximab (lower ESR were closer to remission), disease duration in abatacept (longer disease durations showed difficulty determining remission), baseline c-reactive protein in tocilizumab (higher CRP were closer to remission).Table.Predicting remission for all biologics in various machine learning method.MeasureLassoRidgeSVMRandom ForestXGBoostNo info rateSampleAbataceptAccuracy74.1%74.1%70.6%71.8%68.8%70.6%216AUROC0.7250.7420.7070.6770.6470.500AdalimumabAccuracy73.6%72.0%70.4%72.0%70.4%68.8%315AUROC0.7100.7290.7000.6750.6630.500EtanerceptAccuracy72.0%72.0%70.0%71.5%70.0%68.0%250AUROC0.7410.7470.7260.7190.7040.500GolimumabAccuracy71.3%68.5%66.7%68.5%68.5%68.5%138AUROC0.7460.7270.7010.6900.6550.500InfliximabAccuracy72.8%73.5%67.6%73.5%69.1%72.5%172AUROC0.6630.6830.6160.5970.5270.500TNF inhibitorsAccuracy73.9%74.5%73.9%74.2%73.6%70.3%875AUROC0.7390.7410.7260.7470.7240.500TocilizumabAccuracy62.4%63.6%62.4%59.5%57.2%59.5%436AUROC0.6330.6400.6330.6150.5470.500Figure 2.Shapley plots and SHAP values for the feature importance from clinical information in patients with RA.Conclusion:We developed machine learning models for predicting remission as a response to each biologics in active RA patients based on their clinical profiles, and found important clinical features using explainable AI. This approach may support clinical decisions to improve treatment outcomes in patients with RA.Disclosure of Interests:None declared
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Nguyen HTT, Choi S, Kim S, Lee JH, Park AR, Yu NH, Yoon H, Bae CH, Yeo JH, Choi GJ, Son H, Kim JC. Corrigendum: The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides. Front Plant Sci 2020; 11:635. [PMID: 32508869 PMCID: PMC7251308 DOI: 10.3389/fpls.2020.00635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
[This corrects the article DOI: 10.3389/fpls.2020.00371.].
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Affiliation(s)
- Hang T. T. Nguyen
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Soyoung Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Soonok Kim
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Ju-Hee Lee
- GPS Screen Team, Drug R&D Institute, Bioneer Corporation, Daejeon, South Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Nan Hee Yu
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Chang-Hwan Bae
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Joo Hong Yeo
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Gyung Ja Choi
- Therapeutic & Biotechnology Division, Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Hokyoung Son
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
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Nguyen HTT, Choi S, Kim S, Lee JH, Park AR, Yu NH, Yoon H, Bae CH, Yeo JH, Choi GJ, Son H, Kim JC. The Hsp90 Inhibitor, Monorden, Is a Promising Lead Compound for the Development of Novel Fungicides. Front Plant Sci 2020; 11:371. [PMID: 32300352 PMCID: PMC7144829 DOI: 10.3389/fpls.2020.00371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Endophytic fungi are great resources for the identification of useful natural products such as antimicrobial agents. In this study, we performed the antifungal screening of various plant endophytic fungi against the dollar spot pathogen Sclerotinia homoeocarpa and finally selected Humicola sp. JS-0112 as a potential biocontrol agent. The bioactive compound produced by the strain JS-0112 was identified as monorden known as an inhibitor of heat shock protein 90 (Hsp90). Monorden exhibited strong antagonistic activity against most tested plant pathogenic fungi particularly against tree pathogens and oomycetes with the minimum inhibitory concentration values less than 2.5 μg mL-1. Extensive in planta assays revealed that monorden effectively suppressed the development of several important plant diseases such as rice blast, rice sheath blight, wheat leaf rust, creeping bentgrass dollar spot, and cucumber damping-off. Especially, it showed much stronger disease control efficacy against cucumber damping-off than a synthetic fungicide chlorothalonil. Subsequent molecular genetic analysis of fission yeast and Fusarium graminearum suggested that Hsp90 is a major inhibitory target of monorden, and sequence variation among fungal Hsp90 is a determinant for the dissimilar monorden sensitivity of fungi. This is the first report dealing with the disease control efficacy and antifungal mechanism of monorden against fungal plant diseases and we believe that monorden can be used as a lead molecule for developing novel fungicides with new action mechanism for the control of plant diseases caused by fungi and oomycetes.
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Affiliation(s)
- Hang T. T. Nguyen
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Soyoung Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Soonok Kim
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Ju-Hee Lee
- GPS Screen Team, Drug R&D Institute, Bioneer Corporation, Daejeon, South Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Nan Hee Yu
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Chang-Hwan Bae
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Joo Hong Yeo
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, South Korea
| | - Gyung Ja Choi
- Therapeutic & Biotechnology Division, Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Hokyoung Son
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju, South Korea
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Min B, Yoon H, Park J, Oh YL, Kong WS, Kim JG, Choi IG. Unusual genome expansion and transcription suppression in ectomycorrhizal Tricholoma matsutake by insertions of transposable elements. PLoS One 2020; 15:e0227923. [PMID: 31978083 PMCID: PMC6980582 DOI: 10.1371/journal.pone.0227923] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 09/30/2019] [Accepted: 01/02/2020] [Indexed: 12/15/2022] Open
Abstract
Genome sequencing of Tricholoma matsutake revealed its unusually large size as 189.0 Mbp, which is a consequence of extraordinarily high transposable element (TE) content. We identified that 702 genes were surrounded by TEs, and 83.2% of these genes were not transcribed at any developmental stage. This observation indicated that the insertion of TEs alters the transcription of the genes neighboring these TEs. Repeat-induced point mutation, such as C to T hypermutation with a bias over "CpG" dinucleotides, was also recognized in this genome, representing a typical defense mechanism against TEs during evolution. Many transcription factor genes were activated in both the primordia and fruiting body stages, which indicates that many regulatory processes are shared during the developmental stages. Small secreted protein genes (<300 aa) were dominantly transcribed in the hyphae, where symbiotic interactions occur with the hosts. Comparative analysis with 37 Agaricomycetes genomes revealed that IstB-like domains (PF01695) were conserved across taxonomically diverse mycorrhizal genomes, where the T. matsutake genome contained four copies of this domain. Three of the IstB-like genes were overexpressed in the hyphae. Similar to other ectomycorrhizal genomes, the CAZyme gene set was reduced in T. matsutake, including losses in the glycoside hydrolase genes. The T. matsutake genome sequence provides insight into the causes and consequences of genome size inflation.
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Affiliation(s)
- Byoungnam Min
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Hyeokjun Yoon
- School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
| | - Julius Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - Youn-Lee Oh
- Mushroom Research Division, National Institute of Horticulture and Herbal Science (NIHHS), Rural Development Administration (RDA), Eumseong, Korea
| | - Won-Sik Kong
- Mushroom Research Division, National Institute of Horticulture and Herbal Science (NIHHS), Rural Development Administration (RDA), Eumseong, Korea
- * E-mail: (IC); (WK); (JK)
| | - Jong-Guk Kim
- School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
- * E-mail: (IC); (WK); (JK)
| | - In-Geol Choi
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
- * E-mail: (IC); (WK); (JK)
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Kim B, Shin H, Kim W, Kim H, Cho Y, Yoon H, Baek J, Woo K, Lee Y, Ryoo H. PIN1 Attenuation Improves Midface Hypoplasia in a Mouse Model of Apert Syndrome. J Dent Res 2019; 99:223-232. [PMID: 31869252 DOI: 10.1177/0022034519893656] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Premature fusion of the cranial suture and midface hypoplasia are common features of syndromic craniosynostosis caused by mutations in the FGFR2 gene. The only treatment for this condition involves a series of risky surgical procedures designed to correct defects in the craniofacial bones, which must be performed until brain growth has been completed. Several pharmacologic interventions directed at FGFR2 downstream signaling have been tested as potential treatments for premature coronal suture fusion in a mouse model of Apert syndrome. However, there are no published studies that have targeted for the pharmacologic treatment of midface hypoplasia. We used Fgfr2S252W/+ knock-in mice as a model of Apert syndrome and morphometric analyses to identify causal hypoplastic sites in the midface region. Three-dimensional geometric and linear analyses of Fgfr2S252W/+ mice at postnatal day 0 demonstrated distinct morphologic variance. The premature fusion of anterior facial bones, such as the maxilla, nasal, and frontal bones, rather than the cranium or cranial base, is the main contributing factor toward the anterior-posterior skull length shortening. The cranial base of the mouse model had a noticeable downward slant around the intersphenoid synchondrosis, which is related to distortion of the airway. Within a skull, the facial shape variance was highly correlated with the cranial base angle change along Fgfr2 S252W mutation-induced craniofacial anomalies. The inhibition of an FGFR2 downstream signaling enzyme, PIN1, via genetic knockdown or use of a PIN1 inhibitor, juglone, attenuated the aforementioned deformities in a mouse model of Apert syndrome. Overall, these results indicate that FGFR2 signaling is a key contributor toward abnormal anterior-posterior dimensional growth in the midface region. Our study suggests a novel therapeutic option for the prevention of craniofacial malformations induced by mutations in the FGFR2 gene.
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Affiliation(s)
- B Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Shin
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - W Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Kim
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - Y Cho
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea.,Department of Periodontology, School of Dentistry and Dental Research Institute, BK21 Program, Seoul National University, Seoul, Republic of Korea
| | - H Yoon
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - J Baek
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - K Woo
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - Y Lee
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
| | - H Ryoo
- Department of Molecular Genetics and Dental Pharmacology, Seoul National University, Seoul, Republic of Korea
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Park P, Park A, Yoon H, Damian A, Monge D, Das P, Koay E, Holliday E, Koong A, Minsky B, Taniguchi C, Smith G, Krishnan S, Suh Y, Sawakuchi G, Beddar S, Herman J. Patient Setup Management for Pancreatic SBRT: Daily CT Based Assessment of Setup Accuracy using Vertebral Bone, Fiducial Markers, Biliary Stent, and Soft-Tissue Targeting. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yoon H, Chung WS. HP-05-004 Sexual function of women with ulcer type interstitial cystitis. J Sex Med 2019. [DOI: 10.1016/j.jsxm.2019.03.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kim I, Kim H, Chang W, Kim J, Park N, Youn J, Choi S, Jun S, Cho Y, Yoon H, Nam C, Han S, Hur S, Park H. Efficacy and Safety of Idarucizumab for Rapid Reversal from Dabigatran in Patients Undergoing Orthotopic Heart Transplantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Hu LS, Yoon H, Eschbacher JM, Baxter LC, Dueck AC, Nespodzany A, Smith KA, Nakaji P, Xu Y, Wang L, Karis JP, Hawkins-Daarud AJ, Singleton KW, Jackson PR, Anderies BJ, Bendok BR, Zimmerman RS, Quarles C, Porter-Umphrey AB, Mrugala MM, Sharma A, Hoxworth JM, Sattur MG, Sanai N, Koulemberis PE, Krishna C, Mitchell JR, Wu T, Tran NL, Swanson KR, Li J. Accurate Patient-Specific Machine Learning Models of Glioblastoma Invasion Using Transfer Learning. AJNR Am J Neuroradiol 2019; 40:418-425. [PMID: 30819771 DOI: 10.3174/ajnr.a5981] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 12/13/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE MR imaging-based modeling of tumor cell density can substantially improve targeted treatment of glioblastoma. Unfortunately, interpatient variability limits the predictive ability of many modeling approaches. We present a transfer learning method that generates individualized patient models, grounded in the wealth of population data, while also detecting and adjusting for interpatient variabilities based on each patient's own histologic data. MATERIALS AND METHODS We recruited patients with primary glioblastoma undergoing image-guided biopsies and preoperative imaging, including contrast-enhanced MR imaging, dynamic susceptibility contrast MR imaging, and diffusion tensor imaging. We calculated relative cerebral blood volume from DSC-MR imaging and mean diffusivity and fractional anisotropy from DTI. Following image coregistration, we assessed tumor cell density for each biopsy and identified corresponding localized MR imaging measurements. We then explored a range of univariate and multivariate predictive models of tumor cell density based on MR imaging measurements in a generalized one-model-fits-all approach. We then implemented both univariate and multivariate individualized transfer learning predictive models, which harness the available population-level data but allow individual variability in their predictions. Finally, we compared Pearson correlation coefficients and mean absolute error between the individualized transfer learning and generalized one-model-fits-all models. RESULTS Tumor cell density significantly correlated with relative CBV (r = 0.33, P < .001), and T1-weighted postcontrast (r = 0.36, P < .001) on univariate analysis after correcting for multiple comparisons. With single-variable modeling (using relative CBV), transfer learning increased predictive performance (r = 0.53, mean absolute error = 15.19%) compared with one-model-fits-all (r = 0.27, mean absolute error = 17.79%). With multivariate modeling, transfer learning further improved performance (r = 0.88, mean absolute error = 5.66%) compared with one-model-fits-all (r = 0.39, mean absolute error = 16.55%). CONCLUSIONS Transfer learning significantly improves predictive modeling performance for quantifying tumor cell density in glioblastoma.
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Affiliation(s)
- L S Hu
- From the Department of Radiology (L.S.H., J.M.H., J.R.M., T.W., J.L.)
| | - H Yoon
- Arizona State University (H.Y., Y.X., L.W., T.W., J.L.), Tempe, Arizona
| | | | | | - A C Dueck
- Department of Biostatistics (A.C.D.), Mayo Clinic in Arizona, Scottsdale, Arizona
| | | | | | - P Nakaji
- Neurosurgery (K.A.S., P.N., N.S.)
| | - Y Xu
- Arizona State University (H.Y., Y.X., L.W., T.W., J.L.), Tempe, Arizona
| | - L Wang
- Arizona State University (H.Y., Y.X., L.W., T.W., J.L.), Tempe, Arizona
| | | | - A J Hawkins-Daarud
- Precision Neurotherapeutics Lab (A.J.H.-D., K.W.S., P.R.J, B.R.B., K.R.S.)
| | - K W Singleton
- Precision Neurotherapeutics Lab (A.J.H.-D., K.W.S., P.R.J, B.R.B., K.R.S.)
| | - P R Jackson
- Precision Neurotherapeutics Lab (A.J.H.-D., K.W.S., P.R.J, B.R.B., K.R.S.)
| | - B J Anderies
- Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - B R Bendok
- Precision Neurotherapeutics Lab (A.J.H.-D., K.W.S., P.R.J, B.R.B., K.R.S.).,Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - R S Zimmerman
- Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - C Quarles
- Neuroimaging Research (C.Q.), Barrow Neurological Institute, Phoenix, Arizona
| | | | - M M Mrugala
- Department of Neuro-Oncology (A.B.P.-U., M.M.M., A.S.)
| | - A Sharma
- Department of Neuro-Oncology (A.B.P.-U., M.M.M., A.S.)
| | - J M Hoxworth
- From the Department of Radiology (L.S.H., J.M.H., J.R.M., T.W., J.L.)
| | - M G Sattur
- Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - N Sanai
- Neurosurgery (K.A.S., P.N., N.S.)
| | - P E Koulemberis
- Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - C Krishna
- Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - J R Mitchell
- From the Department of Radiology (L.S.H., J.M.H., J.R.M., T.W., J.L.).,H. Lee Moffitt Cancer Center and Research Institute (J.R.M.), Tampa, Florida
| | - T Wu
- From the Department of Radiology (L.S.H., J.M.H., J.R.M., T.W., J.L.).,Arizona State University (H.Y., Y.X., L.W., T.W., J.L.), Tempe, Arizona
| | - N L Tran
- Department of Cancer Biology (N.L.T.), Mayo Clinic in Arizona, Phoenix, Arizona
| | - K R Swanson
- Precision Neurotherapeutics Lab (A.J.H.-D., K.W.S., P.R.J, B.R.B., K.R.S.).,Department of Neurosurgery (B.J.A., B.R.B., R.S.Z., M.G.S., P.E.K., C.K., K.R.S.)
| | - J Li
- From the Department of Radiology (L.S.H., J.M.H., J.R.M., T.W., J.L.).,Arizona State University (H.Y., Y.X., L.W., T.W., J.L.), Tempe, Arizona
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Heo SG, Jang D, Koo HJ, Yoon H. Large-area fabrication of microlens arrays by using self-pinning effects during the thermal reflow process. Opt Express 2019; 27:3439-3447. [PMID: 30732364 DOI: 10.1364/oe.27.003439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
Generally, the fabrication of curved structures such as microlens arrays has been regarded as an expensive and complicated process. Here, we propose a facile method to form a microlens array with controlled lens curvature by combining residue-free nanoimprint lithography (NIL) with V-shaped molds and the successive thermal reflow procedure of the printed polymeric structures. The V-shaped molds used in this study enable the bottom substrate to be exposed after the NIL process when the initial thickness is controlled. Then, we use the thermal reflow to realize hemi-cylindrical curved lenses by applying heat. The polymers are self-pinned on the exposed substrate, which is strong enough to fix the boundary to not dewet or be flattened in the broad temperature range of the reflow process, which is essential for a large-area fabrication. Furthermore, we demonstrate the modulation of the focal lengths of the lenses by controlling the initial polymer thickness coated on a substrate.
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Nguyen HT, Kim S, Yu NH, Park AR, Yoon H, Bae CH, Yeo JH, Kim IS, Kim JC. Antimicrobial activities of an oxygenated cyclohexanone derivative isolated from Amphirosellinia nigrospora JS-1675 against various plant pathogenic bacteria and fungi. J Appl Microbiol 2019; 126:894-904. [PMID: 30358043 DOI: 10.1111/jam.14138] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/16/2018] [Accepted: 10/16/2018] [Indexed: 01/17/2023]
Abstract
AIMS To evaluate the antimicrobial activities of an active compound isolated from the culture broth of Amphirosellinia nigrospora JS-1675 against various plant pathogenic bacteria and fungi. METHODS AND RESULTS While screening for bioactive secondary metabolites from endophytic fungi, we found that A. nigrospora JS-1675 showed strong in vitro antibacterial activity against Ralstonia solanacearum. One compound (1) was isolated and identified as (4S, 5S, 6S)-5,6-epoxy-4-hydroxy-3-methoxy-5-methyl-cyclohex-2-en-1-one. Growth of most of the tested phytopathogenic bacteria was inhibited by compound 1 and the ethyl acetate (EtOAc) layer except Pseudomonas syringae pv. lachrymans. Compound 1 also inhibited the mycelial growth of several plant pathogenic fungi. Both compound 1 and the EtOAc layer reduced bacterial leaf spot disease in detached peach leaves. They also suppressed the development of bacterial wilt on tomato seedlings quite effectively. CONCLUSIONS Amphirosellinia nigrospora JS-1675 showed antimicrobial activity against plant pathogenic bacteria and fungi by producing compound 1. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report on the occurrence of compound 1 in A. nigrospora JS-1675 and its efficacy against plant pathogenic bacteria and fungi. Their strong disease control efficacy against tomato bacterial wilt suggests that this fungus can be used as a microbial bactericide.
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Affiliation(s)
- H T Nguyen
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
| | - S Kim
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, Korea
| | - N H Yu
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
| | - A R Park
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
| | - H Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, Korea
| | - C-H Bae
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, Korea
| | - J H Yeo
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, Korea
| | - I S Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
| | - J-C Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea
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Choi HJ, Jeong TY, Yoon H, Oh BY, Han YS, Hur MJ, Kang S, Kim JG. Comparative microbial communities in tidal flats sediment on Incheon, South Korea. J GEN APPL MICROBIOL 2018; 64:232-239. [PMID: 30033973 DOI: 10.2323/jgam.2017.12.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Coastal ecosystems, play critical ecological roles of which tidal flats are a significant component of coastal wetlands, such as habitat and nutrient cycling in aquatic biology. Microbial communities in tidal flats are known to play vital roles of self-purification. And the microbial ecology of the sediment is easily affected by human activities and pollution. In this paper, we applied pyrosequencing technology to investigate microbial communities in three different tidal flats (Ganghwa Island, Ongnyeon land region and Yeongjong Island) on the Incheon, Korea peninsula. A total of 16,906 sequences were obtained. We used these sequences to identify the dominant phyla in the three tidal flats: Proteobacteria, Chloroflexi, Actinobacteria, and Bacteroidetes. The composition of the bacterial community of Ganghwa Island and the Ongnyeon region were more similar to each other than they were to the bacterial community of Yeongjong Island. Simpson's dominance index of Yeongjong Island was higher than that of the other regions, and the Shannon diversity index of this region was the lowest. Previous research of samples in these regions indicated that the three tidal flats had similar geochemical characteristics. However, their bacterial communities were rather distinct. This might be because the analysis of microbial communities and physiochemical analysis have different perspectives. Therefore, the pyrosequencing of a bacterial community with physiochemical analysis is recommended as an effective monitoring tool for the comprehensive management of tidal flats.
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Affiliation(s)
- Hye Jin Choi
- Incheon Institute of Health & Environment.,Department of Life Sciences and Biotechnology, Kyungpook National University
| | - Tae-Yong Jeong
- Department of Physical and Environmental Sciences, University of Toronto Scarborough
| | - Hyeokjun Yoon
- Department of Life Sciences and Biotechnology, Kyungpook National University
| | | | | | | | | | - Jong-Guk Kim
- Department of Life Sciences and Biotechnology, Kyungpook National University
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Kim S, Yoon H. VOLUNTEERING, SUBJECTIVE SLEEP QUALITY, AND LONGITUDINAL RISK OF INFLAMMATION: POTENTIAL PATHWAYS? Innov Aging 2018. [DOI: 10.1093/geroni/igy023.999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - H Yoon
- School of Social Work, Texas State University
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40
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Affiliation(s)
- H Yoon
- School of Social Work, Texas State University
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41
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Oh H, Yoon S, Seo M, Oh E, Yoon H, Lee H, Lee J, Ryu HG. Utility of the laryngeal handshake method for identifying the cricothyroid membrane. Acta Anaesthesiol Scand 2018; 62:1223-1228. [PMID: 29926892 DOI: 10.1111/aas.13169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/02/2018] [Accepted: 05/18/2018] [Indexed: 01/21/2023]
Abstract
BACKGROUND The cricothyroid membrane is the most commonly accessed location for invasive surgical airway. Although the laryngeal handshake method is recommended for identifying the cricothyroid membrane, there is no clinical data regarding the utility of the laryngeal handshake method in cricothyroid membrane identification. The objective of this study was to compare the accuracy of cricothyroid membrane identification between the laryngeal handshake method and simple palpation. METHODS After anaesthesia induction, the otorhinolaryngology resident and anaesthesia resident identified and marked the needle insertion point for cricothyroidotomy using simple palpation and the laryngeal handshake method, respectively. The cricothyroid membrane was confirmed with ultrasonography. Identification was determined successful if the marked point was placed within the longitudinal area of the cricothyroid membrane and within 5 mm from midline transversely. The accuracy of cricothyroid membrane identification using the laryngeal handshake method and simple palpation was compared. RESULTS A total of 123 patients were enrolled. The cricothyroid membrane was correctly identified in 87 (70.7%, 95% confidence interval 61.8-78.6%) patients using the laryngeal handshake method compared to 78 (63.4%, 95% confidence interval 54.3-71.9%) patients using simple palpation (P = .188). The time required to identify the cricothyroid membrane was longer when using the laryngeal handshake method (15 [3-48] seconds vs 10.9 [3-55] seconds, P = .003). CONCLUSION The success rate of identifying the cricothyroid membrane was similar among the anesthesiologists who performed the laryngeal handshake method and also among otorhinolaryngologists who used simple palpation.
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Affiliation(s)
- H. Oh
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - S. Yoon
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - M. Seo
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - E. Oh
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - H. Yoon
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - H. Lee
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
| | - J. Lee
- Department of Anaesthesiology and Pain Medicine; Seoul Metropolitan Government Seoul National University Boramae Medical Centre; Seoul Korea
| | - H. G. Ryu
- Department of Anaesthesiology and Pain Medicine; Seoul National University Hospital; Seoul National University College of Medicine; Seoul Korea
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Kang J, Cho B, Kim D, Park K, Lee J, Yoo S, Lee S, Kim C, Jang S, Kim Y, Yoon H, Kim S. MA08.07 Real World Data of Osimertinib in Patients with Central Nervous System (CNS) Metastasis in ASTRIS Korean Subset. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Cho K, Parveen A, Kang MC, Subedi L, Lee JH, Park SY, Jin MR, Yoon H, Son YK, Kim SY. Pyrus ussuriensis Maxim. leaves extract ameliorates DNCB-induced atopic dermatitis-like symptoms in NC/Nga mice. Phytomedicine 2018; 48:76-83. [PMID: 30195883 DOI: 10.1016/j.phymed.2018.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 04/11/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
PURPOSE Pyrus ussuriensis Maxim. has been reported to treat the fever, cough, asthma, and chronic skin disease in Korean Medicine. However, there is no scientific evidence for the use of Pyrus ussuriensis Maxim. Leaves (PUL) extract or its mechanism of action in atopic dermatitis (AD). This study was performed to find the potential therapeutic effects of PUL on the progression of AD using in vitro and in vivo experimental models. METHODS We examined the effects of PUL on the production of nitric oxide (NO) in RAW 264.7, Interleukin 6 (IL-6) and Interleukin 1β (IL-1β) in tumor necrosis factor α (TNF-α) -induced HaCaT cells, respectively. The PUL extract was topically administered to the 2,4-Dinitrochlorobenzene (DNCB) -treated NC/Nga mice. The potential effects of PUL extract were evaluated by measuring the dermatitis score, scratching behavior and serum levels of immunoglobulin E (IgE). The Interleukin 4 (IL-4) and Interleukin 13 (IL-13) cytokines levels were also measured in the splenocytes. In addition, the major components from PUL were analyzed using high performance liquid chromatography (HPLC). RESULTS PUL extract significantly reduced the level of NO in RAW 264.7 cells, as well as IL-6 and IL-1β in TNF-α-induced HaCaT cells. It also reduced IL-4 and IL-13 levels in splenocytes. In DNCB-treated NC/Nga mice, PUL extract significantly ameliorated the dermatitis severity, scratching tendency and transepidermal water loss (TEWL) compared to the negative control. Also, it normalized skin barriers with decreased production of IgE in mice serum. The arbutin, chlorogenic acid, and rutin were identified as major constituents of the extract by HPLC analysis. These constituents may be involved either alone or together in the regulation of atopic dermatitis. CONCLUSION Our studies indicate that PUL ameliorates atopic dermatitis-like symptoms by suppressing the proinflammatory cytokines and immune stimuli in both in vitro and in vivo animal models. Therefore, these data suggest that PUL might be an effective natural resource for the treatment of AD.
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Affiliation(s)
- KyoHee Cho
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Amna Parveen
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea; Department of Pharmacognosy, Faculty of Pharmaceutical Science, Government College University, Faisalabad, Faisalabad, Pakistan
| | - Min Cheol Kang
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Lalita Subedi
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Jae Hyuk Lee
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Sun Young Park
- College of Medicine, Gachon University, Incheon 21999, Republic of Korea
| | - Mi Rim Jin
- College of Medicine, Gachon University, Incheon 21999, Republic of Korea
| | - Hyeokjun Yoon
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42, Hwangyeong-ro, Seo-gu, Incheon 22689, Republic of Korea
| | - Youn Kyoung Son
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, 42, Hwangyeong-ro, Seo-gu, Incheon 22689, Republic of Korea
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University, 191, Hambakmoero, Yeonsu-gu, Incheon 21936, Republic of Korea; Gachon Institute of Pharmaceutical Science, Gachon University, 191, Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Republic of Korea.
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Kusumaningrum N, Lee D, Yoon H, Park C, Chung J. LB1588 Ultraviolet light-induced gasdermin c expression is mediated via trpv1/calcium/calcineurin/nfatc1 pathway. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.06.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kaufmann CN, Sutherland A, Nakhla MZ, Yoon H, Soontornniyomkij B, Eyler LT. 0958 Sleep and Inflammatory Profiles in Bipolar Disorder. Sleep 2018. [DOI: 10.1093/sleep/zsy061.957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C N Kaufmann
- Department of Psychiatry, University of California San Diego, La Jolla, CA
| | - A Sutherland
- Department of Psychiatry, University of California San Diego, La Jolla, CA
| | - M Z Nakhla
- Department of Psychology, California State University Northridge, Northridge, CA
| | - H Yoon
- Department of Psychiatry, University of California San Diego, La Jolla, CA
| | - B Soontornniyomkij
- Department of Psychiatry, University of California San Diego, La Jolla, CA
| | - L T Eyler
- Department of Psychiatry, University of California San Diego, La Jolla, CA
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Zener R, Yoon H, Ziv E, Covey A, Brown K, Sofocleous C, Thornton R, Boas F. 3:00 PM Abstract No. 322 Outcomes after transarterial embolization versus radioembolization of neuroendocrine tumor liver metastases. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Yang W, Gwon D, Noh S, Chu H, Kim J, Yoon H. Abstract No. 637 Stent-graft placement to treat central venous stenosis in hemodialysis patients: long-term results. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Hwang YJ, Kim N, Lee HS, Lee JB, Choi YJ, Yoon H, Shin CM, Park YS, Lee DH. Reversibility of atrophic gastritis and intestinal metaplasia after Helicobacter pylori eradication - a prospective study for up to 10 years. Aliment Pharmacol Ther 2018; 47:380-390. [PMID: 29193217 DOI: 10.1111/apt.14424] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 07/31/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Atrophic gastritis and intestinal metaplasia are premalignant conditions for gastric cancer. Their reversibility by Helicobacter pylori eradication remains controversial. AIM To evaluate the reversibility of atrophic gastritis and intestinal metaplasia by H. pylori eradication with long-term follow-up. METHODS 598 subjects were prospectively enrolled and followed for up to 10 years. They were categorised as H. pylori-negative (n = 65), H. pylori non-eradicated (n = 91), and H. pylori-eradicated (n = 442). Histological assessment was performed for antrum and corpus by Sydney classification. RESULTS Histological follow-up was performed regularly at 1, 2, 3-4 and ≥5 years, with mean follow-up of 1.07 ± 0.21, 2.29 ± 0.83, 3.93 ± 1.02, and 6.45 ± 1.28 years, respectively. Atrophic gastritis in antrum and corpus gradually and significantly (both P < .05 for all timepoints) improved only in the H. pylori-eradicated group compared to that at baseline. Significant difference in atrophic gastritis between H. pylori-eradicated and H. pylori-negative groups disappeared from 1-year follow-up. Similarly, intestinal metaplasia in antrum and corpus improved significantly (both P < .05 for all timepoints) only in the H. pylori-eradicated group in comparison with that at baseline. Significant difference in intestinal metaplasia between H. pylori-eradicated and H. pylori-negative groups disappeared from ≥5 years of follow-up in the antrum and from 3 years of follow-up in the corpus. CONCLUSION H. pylori eradication may be a preventative strategy for intestinal-type gastric cancer by regression of atrophic gastritis and intestinal metaplasia.
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Affiliation(s)
- Y-J Hwang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - N Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
| | - H S Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - J B Lee
- Division of Statistics in Medical Research Collaborating Center, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y J Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - H Yoon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - C M Shin
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - Y S Park
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea
| | - D H Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoungnam, South Korea.,Department of Internal Medicine and Institute of Liver Research, Seoul National University College of Medicine, Seoul, South Korea
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Cho B, Kim D, Park K, Lee J, Yoo S, Kang J, Lee S, Kim C, Jang S, Kim Y, Yoon H, Kim S. P3.01-050 A Real World Treatment Study of Osimertinib: ASTRIS Study Korean Subgroup Analysis. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kang J, Park J, Yoon H, Hyun Y, Kim S, Ahn Y, Yoo E, Kang H. 290 Effect of fermented mackerel oil on the hair growth. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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