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Jang Y, Park TS, Park BC, Lee YM, Heo TH, Jun HS. Aberrant glucose metabolism underlies impaired macrophage differentiation in glycogen storage disease type Ib. FASEB J 2023; 37:e23216. [PMID: 37779422 DOI: 10.1096/fj.202300592rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/20/2023] [Accepted: 09/12/2023] [Indexed: 10/03/2023]
Abstract
Glycogen storage disease type Ib (GSD-Ib) is an autosomal recessive disorder caused by a deficiency in the glucose-6-phosphate (G6P) transporter (G6PT) that is responsible for transporting G6P into the endoplasmic reticulum. GSD-Ib is characterized by disturbances in glucose homeostasis, neutropenia, and neutrophil dysfunction. Although some studies have explored neutrophils abnormalities in GSD-Ib, investigations regarding monocytes/macrophages remain limited so far. In this study, we examined the impact of G6PT deficiency on monocyte-to-macrophage differentiation using bone marrow-derived monocytes from G6pt-/- mice as well as G6PT-deficient human THP-1 monocytes. Our findings revealed that G6PT-deficient monocytes exhibited immature differentiation into macrophages. Notably, the impaired differentiation observed in G6PT-deficient monocytes seemed to be associated with abnormal glucose metabolism, characterized by enhanced glucose consumption through glycolysis, even under quiescent conditions with oxidative phosphorylation. Furthermore, we observed a reduced secretion of inflammatory cytokines in G6PT-deficient THP-1 monocytes during the inflammatory response, despite their elevated glucose consumption. In conclusion, this study sheds light on the significance of G6PT in monocyte-to-macrophage differentiation and underscores its importance in maintaining glucose homeostasis and supporting immune response in GSD-Ib. These findings may contribute to a better understanding of the pathogenesis of GSD-Ib and potentially pave the way for the development of targeted therapeutic interventions.
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Affiliation(s)
- Yuyeon Jang
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, Republic of Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology, and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Republic of Korea
| | - Byung-Chul Park
- Graduate School of International Agricultural Technology, and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Republic of Korea
| | - Young Mok Lee
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Tae-Hwe Heo
- Laboratory of Pharmacoimmunology, Integrated Research Institute of Pharmaceutical Sciences and BK21 FOUR Team for Advanced Program for SmartPharma Leaders, College of Pharmacy, The Catholic University of Korea, Bucheon-si, Republic of Korea
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, Republic of Korea
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2
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Lee HK, Yang YS, Kim SK, Vongxay V, Lee YM. Early adolescents’ sexual and reproductive health literacy in Lao PDR. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac130.039] [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: 11/13/2022] Open
Abstract
Abstract
Background
Sexual and reproductive health literacy (SRHL) refers to the ability to access, understand, appraise, and apply information for decision-making related to sexual and reproductive health. The low level of SRHL in adolescents increases their sexually risky behaviors and endangers sexual health. Although early adolescence is a critical development period for forming initial views on sexuality and is often a time for attempting risky behaviors, studies on SRHL for early adolescents are fairly limited in Las PDR. As an initial step for the development of a global health project between Lao PDR and South Korea, this study assessed the level of SRHL and the differences in gender among early adolescents in Lao PDR.
Methods
Participants were 235 students conveniently recruited from one junior high school each in two provinces in Lao PDR. SRHL was measured using the 39-item Teen Pregnancy Health Literacy scale consisting of 4 subscales of finding, understanding, appraisal, and application. The scores were classified into inadequate, problematic, sufficient, and excellent using the SRHL index formula. The mean differences in gender were compared using t-test.
Results
The mean of the SRHL scores of the participants was 19.07 (±10.57). The mean score was significantly lower for girls, at 17.67 (±11.22) than for boys, at 21.37 (±9.05) (p = .006). Significant differences were further identified in all four sub-domains of SRHL: finding (p = .025), understanding (p = .005), appraisal (p = .041), and application (p = .029). The majority of participants (91.7%) were categorized as having an ‘inadequate’ or ‘problematic’ level of SRHL.
Conclusions
The level of SRHL among most early adolescents was found to be inadequate. The level of SRHL among girls was much lower than that among boys. The findings suggest a gender-specific approach to developing health education programs to improve SRHL among early adolescents and prevent future sexually risky behaviors in Lao PDR.
Key messages
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Affiliation(s)
- HK Lee
- Nursing, Yonsei University, Seoul , South Korea
| | - YS Yang
- Regional Office, Korea International Cooperation Agency , Vientiane, Laos
| | - SK Kim
- Nursing, Soonchunhyang, Cheonan , South Korea
| | - V Vongxay
- Public Health, University of Health Sciences , Vientiane, Laos
| | - YM Lee
- Nursing, DePaul University , Chicago, USA
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3
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Arends CJ, Wilson LH, Estrella A, Kwon OS, Weinstein DA, Lee YM. A Mouse Model of Glycogen Storage Disease Type IX-Beta: A Role for Phkb in Glycogenolysis. Int J Mol Sci 2022; 23:ijms23179944. [PMID: 36077341 PMCID: PMC9456097 DOI: 10.3390/ijms23179944] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Glycogen storage disease type IX (GSD-IX) constitutes nearly a quarter of all GSDs. This ketotic form of GSD is caused by mutations in phosphorylase kinase (PhK), which is composed of four subunits (α, β, γ, δ). PhK is required for the activation of the liver isoform of glycogen phosphorylase (PYGL), which generates free glucose-1-phosphate monomers to be used as energy via cleavage of the α -(1,4) glycosidic linkages in glycogen chains. Mutations in any of the PhK subunits can negatively affect the regulatory and catalytic activity of PhK during glycogenolysis. To understand the pathogenesis of GSD-IX-beta, we characterized a newly created PHKB knockout (Phkb−/−) mouse model. In this study, we assessed fasting blood glucose and ketone levels, serum metabolite concentrations, glycogen phosphorylase activity, and gene expression of gluconeogenic genes and fibrotic genes. Phkb−/− mice displayed hepatomegaly with lower fasting blood glucose concentrations. Phkb−/− mice showed partial liver glycogen phosphorylase activity and increased sensitivity to pyruvate, indicative of partial glycogenolytic activity and upregulation of gluconeogenesis. Additionally, gene expression analysis demonstrated increased lipid metabolism in Phkb−/− mice. Gene expression analysis and liver histology in the livers of old Phkb−/− mice (>40 weeks) showed minimal profibrogenic features when analyzed with age-matched wild-type (WT) mice. Collectively, the Phkb−/− mouse recapitulates mild clinical features in patients with GSD-IX-beta. Metabolic and molecular analysis confirmed that Phkb−/− mice were capable of sustaining energy homeostasis during prolonged fasting by using partial glycogenolysis, increased gluconeogenesis, and potentially fatty acid oxidation in the liver.
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Affiliation(s)
- Charles J. Arends
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Lane H. Wilson
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ana Estrella
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Oh Sung Kwon
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA
- Department of Orthopaedic Surgery and Center on Aging, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - David A. Weinstein
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
| | - Young Mok Lee
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Correspondence:
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4
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Sim SW, Jang Y, Park TS, Park BC, Lee YM, Jun HS. Molecular mechanisms of aberrant neutrophil differentiation in glycogen storage disease type Ib. Cell Mol Life Sci 2022; 79:246. [PMID: 35437689 PMCID: PMC11071875 DOI: 10.1007/s00018-022-04267-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/04/2022] [Accepted: 03/21/2022] [Indexed: 11/25/2022]
Abstract
Glycogen storage disease type Ib (GSD-Ib), characterized by impaired glucose homeostasis, neutropenia, and neutrophil dysfunction, is caused by a deficiency in glucose-6-phosphate transporter (G6PT). Neutropenia in GSD-Ib has been known to result from enhanced apoptosis of neutrophils. However, it has also been raised that neutrophil maturation arrest in the bone marrow would contribute to neutropenia. We now show that G6pt-/- mice exhibit severe neutropenia and impaired neutrophil differentiation in the bone marrow. To investigate the role of G6PT in myeloid progenitor cells, the G6PT gene was mutated using CRISPR/Cas9 system, and single cell-derived G6PT-/- human promyelocyte HL-60 cell lines were established. The G6PT-/- HL-60s exhibited impaired neutrophil differentiation, which is associated with two mechanisms: (i) abnormal lipid metabolism causing a delayed metabolic reprogramming and (ii) reduced nuclear transcriptional activity of peroxisome proliferator-activated receptor-γ (PPARγ) in G6PT-/- HL-60s. In this study, we demonstrated that G6PT is essential for neutrophil differentiation of myeloid progenitor cells and regulates PPARγ activity.
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Affiliation(s)
- Sang Wan Sim
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, 339-700, Republic of Korea
| | - Yuyeon Jang
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, 339-700, Republic of Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology, and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon, 25354, Republic of Korea
| | - Byung-Chul Park
- Graduate School of International Agricultural Technology, and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon, 25354, Republic of Korea
| | - Young Mok Lee
- Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA.
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, 339-700, Republic of Korea.
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5
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Resaz R, Cangelosi D, Segalerba D, Morini M, Uva P, Bosco MC, Banderali G, Estrella A, Wanner C, Weinstein DA, Sechi A, Paci S, Melis D, Di Rocco M, Lee YM, Eva A. Exosomal MicroRNAs as Potential Biomarkers of Hepatic Injury and Kidney Disease in Glycogen Storage Disease Type Ia Patients. Int J Mol Sci 2021; 23:328. [PMID: 35008754 PMCID: PMC8745197 DOI: 10.3390/ijms23010328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/15/2021] [Accepted: 12/23/2021] [Indexed: 12/12/2022] Open
Abstract
Glycogen storage disease type Ia (GSDIa) is an inherited metabolic disorder caused by mutations in the enzyme glucose-6-phosphatase-α (G6Pase-α). Affected individuals develop renal and liver complications, including the development of hepatocellular adenoma/carcinoma and kidney failure. The purpose of this study was to identify potential biomarkers of the evolution of the disease in GSDIa patients. To this end, we analyzed the expression of exosomal microRNAs (Exo-miRs) in the plasma exosomes of 45 patients aged 6 to 63 years. Plasma from age-matched normal individuals were used as controls. We found that the altered expression of several Exo-miRs correlates with the pathologic state of the patients and might help to monitor the progression of the disease and the development of late GSDIa-associated complications.
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Affiliation(s)
- Roberta Resaz
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (R.R.); (D.S.); (M.M.); (M.C.B.)
| | - Davide Cangelosi
- Clinical Bioinformatics Unit, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (D.C.); (P.U.)
| | - Daniela Segalerba
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (R.R.); (D.S.); (M.M.); (M.C.B.)
| | - Martina Morini
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (R.R.); (D.S.); (M.M.); (M.C.B.)
| | - Paolo Uva
- Clinical Bioinformatics Unit, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (D.C.); (P.U.)
| | - Maria Carla Bosco
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (R.R.); (D.S.); (M.M.); (M.C.B.)
| | - Giuseppe Banderali
- Clinical Department of Pediatrics, ASST Santi Paolo e Carlo, Presidio San Paolo, Università degli Studi di Milano, Via Antonio di Rudinì 8, 20142 Milano, Italy; (G.B.); (S.P.)
| | - Ana Estrella
- Department of Pediatrics, University of Connecticut School of Medicine, 400 Farmington Ave, Farmington, CT 06030, USA; (A.E.); (C.W.); (D.A.W.)
| | - Corbinian Wanner
- Department of Pediatrics, University of Connecticut School of Medicine, 400 Farmington Ave, Farmington, CT 06030, USA; (A.E.); (C.W.); (D.A.W.)
| | - David A. Weinstein
- Department of Pediatrics, University of Connecticut School of Medicine, 400 Farmington Ave, Farmington, CT 06030, USA; (A.E.); (C.W.); (D.A.W.)
| | - Annalisa Sechi
- Regional Coordinating Center for Rare Diseases, Presidio Ospedaliero Universitario di Udine, P.zzale SM Della Misericordia 15, 33100 Udine, Italy;
| | - Sabrina Paci
- Clinical Department of Pediatrics, ASST Santi Paolo e Carlo, Presidio San Paolo, Università degli Studi di Milano, Via Antonio di Rudinì 8, 20142 Milano, Italy; (G.B.); (S.P.)
| | - Daniela Melis
- Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, Section of Pediatrics, Università Degli Studi di Salerno, Via Salvador Allende 43, Baronissi, 84100 Salerno, Italy;
| | - Maja Di Rocco
- Department of Pediatrics, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy;
| | - Young Mok Lee
- Department of Pediatrics, University of Connecticut School of Medicine, 400 Farmington Ave, Farmington, CT 06030, USA; (A.E.); (C.W.); (D.A.W.)
| | - Alessandra Eva
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, 16147 Genova, Italy; (R.R.); (D.S.); (M.M.); (M.C.B.)
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6
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Chen YF, Li D, Lee YM, Lee CC, Huang HY, Tsou CH, Liang HC. Highly efficient solid-state Raman yellow-orange lasers created by enhancing the cavity reflectivity. Opt Lett 2021; 46:797-800. [PMID: 33577517 DOI: 10.1364/ol.415437] [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] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/08/2021] [Indexed: 06/12/2023]
Abstract
A new, to the best of our knowledge, output coupler (OC) with enhancement of the cavity reflectivity is proposed to remarkably elevate the output powers and efficiencies of diode-pumped Nd:GdVO4/KGW Raman yellow-orange lasers. The cavity reflectivity is effectively increased by using the double-sided dichroic coating on the OC. In comparison with the conventional single-sided coating, the conversion efficiency can be boosted from 15% to 26.3% in the experiment of a yellow laser at 578.8 nm, and the maximum output power can be increased from 5.7 to 10.5 W in the quasi-continuous-wave mode with 50% duty cycle and frequency of 500 Hz. Furthermore, in the operation of an orange laser at 588 nm, the maximum output power can be improved from 5.6 to 7.0 W by replacing the conventional OC with the new one.
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7
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Cho JH, Weinstein DA, Lee YM. Emerging roles of autophagy in hepatic tumorigenesis and therapeutic strategies in glycogen storage disease type Ia: A review. J Inherit Metab Dis 2021; 44:118-128. [PMID: 32474930 DOI: 10.1002/jimd.12267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/19/2020] [Accepted: 05/27/2020] [Indexed: 12/13/2022]
Abstract
Glycogen storage disease type Ia (GSD-Ia) is an inherited metabolic disease caused by a deficiency in glucose-6-phosphatase-α (G6Pase-α or G6PC) which plays a critical role in blood glucose homeostasis by catalyzing the hydrolysis of glucose-6-phosphate (G6P) to glucose and phosphate in the terminal step of glycogenolysis and gluconeogenesis. Patients with GSD-Ia manifest life-threatening fasting hypoglycemia along with the excessive accumulation of hepatic glycogen and triglycerides which results in hepatomegaly and a risk of long-term complications such as hepatocellular adenoma and carcinoma (HCA/HCC). The etiology of HCA/HCC development in GSD-Ia, however, is unknown. Recent studies have shown that the livers in model animals of GSD-Ia display impairment of autophagy, a cellular recycling process which is critical for energy metabolism and cellular homeostasis. However, molecular mechanisms of autophagy impairment and its involvement in pathogenesis in GSD-Ia are still under investigation. Here, we summarize the latest advances for signaling pathways implicated in hepatic autophagy impairment and the roles of autophagy in hepatic tumorigenesis in GSD-Ia. In addition, recent evidence has illustrated that autophagy plays an important role in hepatic metabolism and liver-directed gene therapy mediated by recombinant adeno-associated virus (rAAV). Therefore, we highlight the possible role of hepatic autophagy in metabolic control and rAAV-mediated gene therapy for GSD-Ia. In this review, we also provide potential therapeutic strategies for GSD-Ia on the basis of molecular mechanisms underlying hepatic autophagy impairment in GSD-Ia.
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Affiliation(s)
- Jun-Ho Cho
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - David A Weinstein
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, Connecticut, USA
- Glycogen Storage Disease Program, Connecticut Children's Medical Center, Hartford, Connecticut, USA
| | - Young Mok Lee
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, Connecticut, USA
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8
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Jeon EH, Park TS, Jang Y, Hwang E, Kim SJ, Song KD, Weinstein DA, Lee YM, Park BC, Jun HS. Glucose-6-phosphate transporter mediates macrophage proliferation and functions by regulating glycolysis and mitochondrial respiration. Biochem Biophys Res Commun 2020; 524:89-95. [PMID: 31980167 DOI: 10.1016/j.bbrc.2020.01.043] [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: 12/15/2019] [Accepted: 01/07/2020] [Indexed: 11/29/2022]
Abstract
Glycogen storage disease type Ib (GSD-Ib), caused by a deficiency in glucose-6-phosphate transporter (G6PT), is characterized by disrupted glucose homeostasis, inflammatory bowel disease, neutropenia, and neutrophil dysfunction. The purpose of this study was to investigate the role of G6PT on macrophage functions and metabolism. Peritoneal macrophages of G6pt-/- mice were lower in number and their effector functions including migration, superoxide production, and phagocytosis were impaired. To investigate the underlying mechanisms of macrophage dysfunction, the G6PT gene was mutated in porcine alveolar macrophage 3D4/31 cells using the CRISPR/Cas9 technology. The G6PT-deficient macrophages exhibited significant decline in cell growth, bactericidal activity, and antiviral response. These phenotypes are associated with the impaired glycolysis and mitochondrial oxidative phosphorylation. We therefore propose that the G6PT-mediated metabolism is essential for effector functions of macrophage, the immune deficiencies observed in GSD-Ib extend beyond neutropenia and neutrophil dysfunction, and future therapeutic targets aimed both the neutrophils and macrophages may be necessary.
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Affiliation(s)
- Eek Hyung Jeon
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon, 25354, Republic of Korea
| | - Yuyeon Jang
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea
| | - Eunmi Hwang
- Department of Biotechnology, Hoseo University, 165, Baebang, Asan, Chungnam, 31499, Republic of Korea
| | - Sung-Jo Kim
- Department of Biotechnology, Hoseo University, 165, Baebang, Asan, Chungnam, 31499, Republic of Korea
| | - Ki-Duk Song
- Department of Animal Biotechnology, Chonbuk National University, Jeonju, 54896, Republic of Korea
| | - David A Weinstein
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
| | - Young Mok Lee
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
| | - Byung-Chul Park
- Graduate School of International Agricultural Technology and Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang, Gangwon, 25354, Republic of Korea.
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, Korea University, Sejong, 30019, Republic of Korea.
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9
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Sim SW, Weinstein DA, Lee YM, Jun HS. Glycogen storage disease type Ib: role of glucose‐6‐phosphate transporter in cell metabolism and function. FEBS Lett 2019; 594:3-18. [DOI: 10.1002/1873-3468.13666] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Sang Wan Sim
- Department of Biotechnology and Bioinformatics College of Science and Technology Korea University Sejong Korea
| | - David A. Weinstein
- Glycogen Storage Disease Program University of Connecticut School of Medicine Farmington CT USA
| | - Young Mok Lee
- Glycogen Storage Disease Program University of Connecticut School of Medicine Farmington CT USA
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics College of Science and Technology Korea University Sejong Korea
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10
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Ellepola K, Truong T, Liu Y, Lin Q, Lim TK, Lee YM, Cao T, Koo H, Seneviratne CJ. Multi-omics Analyses Reveal Synergistic Carbohydrate Metabolism in Streptococcus mutans-Candida albicans Mixed-Species Biofilms. Infect Immun 2019; 87:e00339-19. [PMID: 31383746 PMCID: PMC6759298 DOI: 10.1128/iai.00339-19] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/26/2019] [Indexed: 12/25/2022] Open
Abstract
Candida albicans, a major opportunistic fungal pathogen, is frequently found together with Streptococcus mutans in dental biofilms associated with severe childhood caries (tooth decay), a prevalent pediatric oral disease. However, the impact of this cross-kingdom relationship on C. albicans remains largely uncharacterized. Here, we employed a novel quantitative proteomics approach in conjunction with transcriptomic profiling to unravel molecular pathways of C. albicans when cocultured with S. mutans in mixed biofilms. RNA sequencing and iTRAQ (isobaric tags for relative and absolute quantitation)-based quantitative proteomics revealed that C. albicans genes and proteins associated with carbohydrate metabolism were significantly enhanced, including sugar transport, aerobic respiration, pyruvate breakdown, and the glyoxylate cycle. Other C. albicans genes and proteins directly and indirectly related to cell morphogenesis and cell wall components such as mannan and glucan were also upregulated, indicating enhanced fungal activity in mixed-species biofilm. Further analyses revealed that S. mutans-derived exoenzyme glucosyltransferase B (GtfB), which binds to the fungal cell surface to promote coadhesion, can break down sucrose into glucose and fructose that can be readily metabolized by C. albicans, enhancing growth and acid production. Altogether, we identified key pathways used by C. albicans in the mixed biofilm, indicating an active fungal role in the sugar metabolism and environmental acidification (key virulence traits associated with caries onset) when interacting with S. mutans, and a new cross-feeding mechanism mediated by GtfB that enhances C. albicans carbohydrate utilization. In addition, we demonstrate that comprehensive transcriptomics and quantitative proteomics can be powerful tools to study microbial contributions which remain underexplored in cross-kingdom biofilms.
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Affiliation(s)
- K Ellepola
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
- Center of Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA
| | - T Truong
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - Y Liu
- Biofilm Research Labs, Levy Center for Oral Health, Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Q Lin
- Protein and Proteomic Centre, Department of Biological Sciences, National University of Singapore, Singapore
| | - T K Lim
- Protein and Proteomic Centre, Department of Biological Sciences, National University of Singapore, Singapore
| | - Y M Lee
- Protein and Proteomic Centre, Department of Biological Sciences, National University of Singapore, Singapore
| | - T Cao
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - H Koo
- Biofilm Research Labs, Levy Center for Oral Health, Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - C J Seneviratne
- National Dental Centre Singapore, Oral Health ACP, SingHealth Duke NUS, Singapore
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11
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Wilson LH, Cho JH, Estrella A, Smyth JA, Wu R, Chengsupanimit T, Brown LM, Weinstein DA, Lee YM. Liver Glycogen Phosphorylase Deficiency Leads to Profibrogenic Phenotype in a Murine Model of Glycogen Storage Disease Type VI. Hepatol Commun 2019; 3:1544-1555. [PMID: 31701076 PMCID: PMC6824077 DOI: 10.1002/hep4.1426] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/27/2019] [Indexed: 12/31/2022] Open
Abstract
Mutations in the liver glycogen phosphorylase (Pygl) gene are associated with the diagnosis of glycogen storage disease type VI (GSD‐VI). To understand the pathogenesis of GSD‐VI, we generated a mouse model with Pygl deficiency (Pygl−/−). Pygl−/− mice exhibit hepatomegaly, excessive hepatic glycogen accumulation, and low hepatic free glucose along with lower fasting blood glucose levels and elevated blood ketone bodies. Hepatic glycogen accumulation in Pygl−/− mice increases with age. Masson's trichrome and picrosirius red staining revealed minimal to mild collagen deposition in periportal, subcapsular, and/or perisinusoidal areas in the livers of old Pygl−/− mice (>40 weeks). Consistently, immunohistochemical analysis showed the number of cells positive for alpha smooth muscle actin (α‐SMA), a marker of activated hepatic stellate cells, was increased in the livers of old Pygl−/− mice compared with those of age‐matched wild‐type (WT) mice. Furthermore, old Pygl−/− mice had inflammatory infiltrates associated with hepatic vessels in their livers along with up‐regulated hepatic messenger RNA levels of C‐C chemokine ligand 5 (Ccl5/Rantes) and monocyte chemoattractant protein 1 (Mcp‐1), indicating inflammation, while age‐matched WT mice did not. Serum levels of aspartate aminotransferase and alanine aminotransferase were elevated in old Pygl−/− mice, indicating liver damage. Conclusion: Pygl deficiency results in progressive accumulation of hepatic glycogen with age and liver damage, inflammation, and collagen deposition, which can increase the risk of liver fibrosis. Collectively, the Pygl‐deficient mouse recapitulates clinical features in patients with GSD‐VI and provides a model to elucidate the mechanisms underlying hepatic complications associated with defective glycogen metabolism.
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Affiliation(s)
- Lane H Wilson
- Glycogen Storage Disease Program Department of Pediatrics University of Connecticut School of Medicine Farmington CT
| | - Jun-Ho Cho
- Glycogen Storage Disease Program Department of Pediatrics University of Connecticut School of Medicine Farmington CT
| | - Ana Estrella
- Glycogen Storage Disease Program Department of Pediatrics University of Connecticut School of Medicine Farmington CT
| | - Joan A Smyth
- Connecticut Veterinary Medical Diagnostic Laboratory Department of Pathobiology and Veterinary Science University of Connecticut Storrs CT
| | - Rong Wu
- Biostatistics Center Connecticut Convergence Institute for Translation in Regenerative Engineering University of Connecticut Health Center Farmington CT
| | - Tayoot Chengsupanimit
- Glycogen Storage Disease Program University of Florida College of Medicine Gainesville FL
| | - Laurie M Brown
- Glycogen Storage Disease Program University of Florida College of Medicine Gainesville FL
| | - David A Weinstein
- Glycogen Storage Disease Program Department of Pediatrics University of Connecticut School of Medicine Farmington CT.,Glycogen Storage Disease Program Connecticut Children's Medical Center Hartford CT
| | - Young Mok Lee
- Glycogen Storage Disease Program Department of Pediatrics University of Connecticut School of Medicine Farmington CT
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12
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Cho JH, Lee YM, Starost MF, Mansfield BC, Chou JY. Gene therapy prevents hepatic tumor initiation in murine glycogen storage disease type Ia at the tumor-developing stage. J Inherit Metab Dis 2019; 42:459-469. [PMID: 30637773 PMCID: PMC6483852 DOI: 10.1002/jimd.12056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/24/2018] [Accepted: 11/28/2018] [Indexed: 12/17/2022]
Abstract
Hepatocellular adenoma/carcinoma (HCA/HCC) is a long-term complication of glycogen storage disease type-Ia (GSD-Ia), which is caused by a deficiency in glucose-6-phosphatase-α (G6Pase-α or G6PC), a key enzyme in gluconeogenesis. Currently, there is no therapy to address HCA/HCC in GSD-Ia. We have previously shown that a recombinant adeno-associated virus (rAAV) vector-mediated G6PC gene transfer to 2-week-old G6pc-/- mice prevents HCA development. However, it remains unclear whether G6PC gene transfer at the tumor developing stage of GSD-Ia can prevent tumor initiation or abrogate the pre-existing tumors. Using liver-specific G6pc-knockout (L-G6pc-/-) mice that develop HCA/HCC, we now show that treating the mice at the tumor-developing stage with rAAV-G6PC restores hepatic G6Pase-α expression, normalizes glucose homeostasis, and prevents de novo HCA/HCC development. The rAAV-G6PC treatment also normalizes defective hepatic autophagy and corrects metabolic abnormalities in the nontumor liver tissues of both tumor-free and tumor-bearing mice. However, gene therapy cannot restore G6Pase-α expression in the HCA/HCC lesions and fails to abrogate any pre-existing tumors. We show that the expression of 11 β-hydroxysteroid dehydrogenase type-1 that mediates local glucocorticoid activation is downregulated in HCA/HCC lesions, leading to impairment in glucocorticoid signaling critical for gluconeogenesis activation. This suggests that local glucocorticoid action downregulation in the HCA/HCC lesions may suppress gene therapy mediated G6Pase-α restoration. Collectively, our data show that rAAV-mediated gene therapy can prevent de novo HCA/HCC development in L-G6pc-/- mice at the tumor developing stage, but it cannot reduce any pre-existing tumor burden.
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Affiliation(s)
- Jun-Ho Cho
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD 20892, USA
| | - Young Mok Lee
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD 20892, USA
| | - Matthew F. Starost
- Division of Veterinary Resources, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brian C. Mansfield
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD 20892, USA
- Foundation Fighting Blindness, Columbia, MD 21046, USA
| | - Janice Y. Chou
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD 20892, USA
- Correspondence should be addressed to: Janice Y. Chou, Building 10, Room 8N240C, NIH, 10 Center Drive, Bethesda, MD 20892-1830, Tel: 301-496-1094; Fax: 301-402-6035,
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13
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Lee YM, Conlon TJ, Specht A, Coleman KE, Brown LM, Estrella AM, Dambska M, Dahlberg KR, Weinstein DA. Long-term safety and efficacy of AAV gene therapy in the canine model of glycogen storage disease type Ia. J Inherit Metab Dis 2018; 41:977-984. [PMID: 29802554 DOI: 10.1007/s10545-018-0199-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 04/30/2018] [Accepted: 05/14/2018] [Indexed: 01/25/2023]
Abstract
BACKGROUND Viral mediated gene therapy has progressed after overcoming early failures, and gene therapy has now been approved for several conditions in Europe and the USA. Glycogen storage disease (GSD) type Ia, caused by a deficiency of glucose-6-phosphatase-α, has been viewed as an outstanding candidate for gene therapy. This follow-up report describes the long-term outcome for the naturally occurring GSD-Ia dogs treated with rAAV-GPE-hG6PC-mediated gene therapy. METHODS A total of seven dogs were treated with rAAV-GPE-hG6PC-mediated gene therapy. The first four dogs were treated at birth, and three dogs were treated between 2 and 6 months of age to assess the efficacy and safety in animals with mature livers. Blood and urine samples, radiographic studies, histological evaluation, and biodistribution were assessed. RESULTS Gene therapy improved survival in the GSD-Ia dogs. With treatment, the biochemical studies normalized for the duration of the study (up to 7 years). None of the rAAV-GPE-hG6PC-treated dogs had focal hepatic lesions or renal abnormalities. Dogs treated at birth required a second dose of rAAV after 2-4 months; gene therapy after hepatic maturation resulted in improved efficacy after a single dose. CONCLUSION rAAV-GPE-hG6PC treatment in GSD-Ia dogs was found to be safe and efficacious. GSD-Ia is an attractive target for human gene therapy since it is a monogenic disorder with limited tissue involvement. Blood glucose and lactate monitoring can be used to assess effectiveness and as a biomarker of success. GSD-Ia can also serve as a model for other hepatic monogenic disorders.
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Affiliation(s)
- Young Mok Lee
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
- Glycogen Storage Disease Program, University of Florida College of Medicine, Gainesville, FL, USA
| | - Thomas J Conlon
- Powell Gene Therapy Center, University of Florida, Gainesville, FL, 32610, USA
- CR Scientific and Compliance Consulting, LLC, Gainesville, FL, 32608, USA
| | - Andrew Specht
- Department of Small Animal Clinical Sciences, University of Florida College of Veterinary Medicine, Gainesville, FL, USA
| | - Kirsten E Coleman
- Powell Gene Therapy Center, University of Florida, Gainesville, FL, 32610, USA
| | - Laurie M Brown
- Glycogen Storage Disease Program, University of Florida College of Medicine, Gainesville, FL, USA
| | - Ana M Estrella
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
- Glycogen Storage Disease Program, University of Florida College of Medicine, Gainesville, FL, USA
| | - Monika Dambska
- Glycogen Storage Disease Program, University of Florida College of Medicine, Gainesville, FL, USA
- Glycogen Storage Disease Program, Connecticut Children's Medical Center, Hartford, CT, USA
| | - Kathryn R Dahlberg
- Glycogen Storage Disease Program, Connecticut Children's Medical Center, Hartford, CT, USA
| | - David A Weinstein
- Glycogen Storage Disease Program, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT, 06030, USA.
- Glycogen Storage Disease Program, University of Florida College of Medicine, Gainesville, FL, USA.
- Glycogen Storage Disease Program, Connecticut Children's Medical Center, Hartford, CT, USA.
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14
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Kim C, Kim Y, Yang DW, Rhee CK, Kim SK, Hwang YI, Park YB, Lee YM, Jin S, Park J, Hahm CR, Park CH, Park SY, Jung CK, Kim YI, Lee SH, Yoon HK, Lee JH, Lim SY, Yoo KH. Direct and Indirect Costs of Chronic Obstructive Pulmonary Disease in Korea. Tuberc Respir Dis (Seoul) 2018; 82:27-34. [PMID: 30302958 PMCID: PMC6304326 DOI: 10.4046/trd.2018.0035] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 11/24/2022] Open
Abstract
Background Understanding the burden of disease is important to establish cost-effective treatment strategies and to allocate healthcare resources appropriately. However, little reliable information is available regarding the overall economic burden imposed by chronic obstructive pulmonary disease (COPD) in Korea. Methods This study is a multicenter observational research on the COPD burden in Korea. Total COPD costs were comprised of three categories: direct medical, direct non-medical, and indirect costs. For direct medical costs, institutional investigation was performed at 13 medical facilities mainly based on the claims data. For direct non-medical and indirect costs, site-based surveys were administered to the COPD patients during routine visits. Total costs were estimated using the COPD population defined in the recent report. Results The estimated total costs were approximately 1,245 million US dollar (1,408 billion Korean won). Direct medical costs comprised approximately 20% of the total estimated costs. Of these, formal medical costs held more than 80%. As direct non-medical costs, nursing costs made up the largest percentage (39%) of the total estimated costs. Costs for COPD-related loss of productivity formed four fifths of indirect costs, and accounted for up to 33% of the total costs. Conclusion This study shows for the first time the direct and indirect costs of COPD in Korea. The total costs were enormous, and the costs of nursing and lost productivity comprised approximately 70% of total costs. The results provide insight for an effective allocation of healthcare resources and to inform establishment of strategies to reduce national burden of COPD.
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Affiliation(s)
- Changhwan Kim
- Department of Internal Medicine, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Korea
| | - Younhee Kim
- Institute of Health and Environment, School of Public Health, Seoul National University, Seoul, Korea
| | - Dong Wook Yang
- Graduate School of Public Health, Seoul National University, Seoul, Korea
| | - Chin Kook Rhee
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung Kyoung Kim
- Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Yong Il Hwang
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Yong Bum Park
- Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea
| | | | | | - Jinkyeong Park
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Cho Rom Hahm
- Department of Internal Medicine, Gwangmyeong Sungae Hospital, Seoul, Korea
| | - Chang Han Park
- Department of Internal Medicine, Sungae Hospital, Seoul, Korea
| | | | | | - Yu Il Kim
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Sang Haak Lee
- Department of Internal Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyoung Kyu Yoon
- Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jin Hwa Lee
- Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Seong Yong Lim
- Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea.
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15
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Yun WJ, Kim YG, Lee YM, Lim JY, Kim HJ, Khan MUK, Chang S, Park HS, Kyung CM. Depth extraction with offset pixels. Opt Express 2018; 26:15825-15841. [PMID: 30114838 DOI: 10.1364/oe.26.015825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
Numerous depth extraction techniques have been proposed in the past. However, the utility of these techniques is limited as they typically require multiple imaging units, bulky platforms for computation, cannot achieve high speed and are computationally expensive. To counter the above challenges, a sensor with Offset Pixel Apertures (OPA) has been recently proposed. However, a working system for depth extraction with the OPA sensor has not been discussed. In this paper, we propose the first such system for depth extraction using the OPA sensor. We also propose a dedicated hardware implementation for the proposed system, named as the Depth Map Processor (DMP). The DMP can provide depth at 30 frames per second at 1920 × 1080 resolution with 31 disparity levels. Furthermore, the proposed DMP has low power consumption as for the aforementioned speed and resolution it only requires 290.76 mW. The proposed system makes it an ideal choice for depth extraction systems in constrained environments.
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16
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Kim DS, Son E, Lee YS, Lee YM, Park YH, Kim DH, Lee KW. Herbal Complex DKB114 for Hyperuricemia and Gout. Am J Transl Res 2018. [DOI: 10.1055/s-0038-1644979] [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: 10/28/2022]
Affiliation(s)
- DS Kim
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - E Son
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YS Lee
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YM Lee
- Korean Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Dajeon 34054, Republic of Korea
| | - YH Park
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
| | - DH Kim
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
| | - KW Lee
- Dongkook Pharmaceutical Co., LTD, Gyeonggi Bio-Center, 147, Gwanggyo-ro, Yeongtong-gu, Suwon-city, Gyeonggi-do, Republic of Korea
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17
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Kwon JH, Lee YM, Cho JH, Kim GY, Anduaga J, Starost MF, Mansfield BC, Chou JY. Liver-directed gene therapy for murine glycogen storage disease type Ib. Hum Mol Genet 2018; 26:4395-4405. [PMID: 28973635 DOI: 10.1093/hmg/ddx325] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/15/2017] [Indexed: 12/11/2022] Open
Abstract
Glycogen storage disease type-Ib (GSD-Ib), deficient in the glucose-6-phosphate transporter (G6PT), is characterized by impaired glucose homeostasis, myeloid dysfunction, and long-term risk of hepatocellular adenoma (HCA). We examined the efficacy of G6PT gene therapy in G6pt-/- mice using recombinant adeno-associated virus (rAAV) vectors, directed by either the G6PC or the G6PT promoter/enhancer. Both vectors corrected hepatic G6PT deficiency in murine GSD-Ib but the G6PC promoter/enhancer was more efficacious. Over a 78-week study, using dose titration of the rAAV vectors, we showed that G6pt-/- mice expressing 3-62% of normal hepatic G6PT activity exhibited a normalized liver phenotype. Two of the 12 mice expressing < 6% of normal hepatic G6PT activity developed HCA. All treated mice were leaner and more sensitive to insulin than wild-type mice. Mice expressing 3-22% of normal hepatic G6PT activity exhibited higher insulin sensitivity than mice expressing 44-62%. The levels of insulin sensitivity correlated with the magnitudes of hepatic carbohydrate response element binding protein signaling activation. In summary, we established the threshold of hepatic G6PT activity required to prevent tumor formation and showed that mice expressing 3-62% of normal hepatic G6PT activity maintained glucose homeostasis and were protected against age-related obesity and insulin resistance.
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Affiliation(s)
- Joon Hyun Kwon
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Young Mok Lee
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Jun-Ho Cho
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Goo-Young Kim
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Javier Anduaga
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
| | - Matthew F Starost
- Division of Veterinary Resources, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brian C Mansfield
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development.,Foundation Fighting Blindness, Columbia, MD 21046, USA
| | - Janice Y Chou
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development
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18
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Ha KH, Kim SA, Lee YM, Kim DJ, Lee DH. Can persistent organic pollutants distinguish between two opposite metabolic phenotypes in lean Koreans? Diabetes Metab 2018; 44:168-171. [PMID: 29395811 DOI: 10.1016/j.diabet.2017.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/02/2017] [Accepted: 12/19/2017] [Indexed: 10/18/2022]
Abstract
AIMS This study investigated the association of persistent organic pollutants (POPs), an emerging new risk factor for type 2 diabetes and the metabolic syndrome, with the presence of opposite phenotypes of glucose and lipid metabolism among normal-weight Koreans of similar body composition. METHODS Fifty subjects, randomly selected from an ongoing community-based cohort study, from two opposite phenotype groups - metabolically unhealthy normal weight (MUHNW) and metabolically healthy normal weight (MHNW) - were matched for waist circumference, visceral fat mass and demographic variables, then compared for serum concentrations of POPs. RESULTS Most POPs (10 out of 13 compounds) were present in higher serum concentrations in the MUHNW than in the MHNW. In particular, serum concentrations of all compounds of the organochlorine pesticide class were 2.2 to 4.7 times higher in cases than in controls. Compared with the lowest tertile of summary measures of POPs, Odds ratios (95% confidence interval) for the second and third tertiles were 7.4 (1.9-29.4) and 10.4 (2.6-41.2), respectively. Adjusting for possible confounders did not change the results. CONCLUSION Taken altogether, these findings from the present and previous studies suggest that increased serum POP concentrations may play an important role in the development of unhealthy metabolic phenotypes in lean people.
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Affiliation(s)
- K H Ha
- Department of Endocrinology and Metabolism, Ajou University, School of Medicine, Suwon, Republic of Korea; Cardiovascular and Metabolic Disease Etiology Research Center, Ajou University School of Medicine, Suwon, Republic of Korea
| | - S A Kim
- Department of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea
| | - Y M Lee
- Department of Preventive Medicine, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro Jung-gu, Daegu 41944, Republic of Korea
| | - D J Kim
- Department of Endocrinology and Metabolism, Ajou University, School of Medicine, Suwon, Republic of Korea; Cardiovascular and Metabolic Disease Etiology Research Center, Ajou University School of Medicine, Suwon, Republic of Korea.
| | - D H Lee
- Department of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea; Department of Preventive Medicine, School of Medicine, Kyungpook National University, 680, Gukchaebosang-ro Jung-gu, Daegu 41944, Republic of Korea.
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19
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Sim SW, Park TS, Kim SJ, Park BC, Weinstein DA, Lee YM, Jun HS. Aberrant proliferation and differentiation of glycogen storage disease type Ib mesenchymal stem cells. FEBS Lett 2018; 592:162-171. [PMID: 29238966 DOI: 10.1002/1873-3468.12939] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/01/2017] [Accepted: 12/05/2017] [Indexed: 12/14/2022]
Abstract
Glycogen storage disease type Ib (GSD-Ib) is caused by mutations of the glucose-6-phosphate transporter (G6PT) and characterized by disrupted glucose homeostasis, neutropenia, and neutrophil dysfunction. To investigate the role of G6PT in human adipose-derived mesenchymal stem cells (hMSCs), the G6PT gene was mutated by CRISPR/Cas9 technology and single cell-derived G6PT-/- hMSCs were established. G6PT-/- hMSCs have significantly increased cell proliferation but impaired adipogenesis and osteogenesis. These phenotypes are associated with two mechanisms: i) metabolic reprogramming in G6PT-/- hMSCs causing a metabolic shift toward glycolysis rather than oxidative phosphorylation and ii) increased cyclooxygenase-2-derived prostaglandin E2 secretion in G6PT-/- hMSCs. This study demonstrates that G6PT is essential for proliferation and differentiation of MSCs, providing important insights into the GSD-Ib phenotypes.
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Affiliation(s)
- Sang Wan Sim
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, Korea
| | - Tae Sub Park
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Korea.,Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Korea
| | - Sung-Jo Kim
- Department of Biotechnology, Hoseo University, Asan, Chungnam, Korea
| | - Byung-Chul Park
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Korea.,Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Korea
| | - David A Weinstein
- Glycogen Storage Disease Program, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Young Mok Lee
- Glycogen Storage Disease Program, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Hyun Sik Jun
- Department of Biotechnology and Bioinformatics, College of Science and Technology, Korea University, Sejong, Korea
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20
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Song DJ, Song WJ, Kwon JW, Kim GW, Kim MA, Kim MY, Kim MH, Kim SH, Kim SH, Kim SH, Kim ST, Kim SH, Kim JK, Kim JH, Kim HJ, Kim HB, Park KH, Yoon JK, Lee BJ, Lee SE, Lee YM, Lee YJ, Lim KH, Jeon YH, Jo EJ, Jee YK, Jin HJ, Choi SH, Hur GY, Cho SH, Kim SH, Lim DH. KAAACI Evidence-Based Clinical Practice Guidelines for Chronic Cough in Adults and Children in Korea. Allergy Asthma Immunol Res 2018; 10:591-613. [PMID: 30306744 PMCID: PMC6182199 DOI: 10.4168/aair.2018.10.6.591] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/24/2018] [Indexed: 12/13/2022]
Abstract
Chronic cough is common in the community and causes significant morbidity. Several factors may underlie this problem, but comorbid conditions located at sensory nerve endings that regulate the cough reflex, including rhinitis, rhinosinusitis, asthma, eosinophilic bronchitis, and gastroesophageal reflux disease, are considered important. However, chronic cough is frequently non-specific and accompanied by not easily identifiable causes during the initial evaluation. Therefore, there are unmet needs for developing empirical treatment and practical diagnostic approaches that can be applied in primary clinics. Meanwhile, in referral clinics, a considerable proportion of adult patients with chronic cough are unexplained or refractory to conventional treatment. The present clinical practice guidelines aim to address major clinical questions regarding empirical treatment, practical diagnostic tools for non-specific chronic cough, and available therapeutic options for chronic wet cough in children and unexplained chronic cough in adults in Korea.
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Affiliation(s)
- Dae Jin Song
- Department of Pediatrics, Korea University College of Medicine and Environmental Health Center for Childhood Asthma, Korea University Anam Hospital, Seoul, Korea
| | - Woo Jung Song
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Woo Kwon
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Gun Woo Kim
- Department of Internal Medicine, St. Carollo General Hospital, Suncheon, Korea
| | - Mi Ae Kim
- Department of Pulmonology, Allergy and Critical Care Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Mi Yeong Kim
- Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Min Hye Kim
- Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Sang Ha Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sang Heon Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Sang Hyuck Kim
- Department of Family Medicine, Seoul National University Hospital, Seoul, Korea
| | - Sun Tae Kim
- Department of Otorhinolaryngology, Gachon University, Gil Medical center, Incheon, Korea
| | - Sae Hoon Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Bundang, Korea
| | - Ja Kyoung Kim
- Department of Pediatrics, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Joo Hee Kim
- Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Hyun Jung Kim
- Institute for Evidence-based Medicine Cochrane Korea, Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Hyo Bin Kim
- Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea
| | - Kyung Hee Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | | | - Byung Jae Lee
- Department of Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung Eun Lee
- Respiratory and Allergy Clinic, Pusan National University Yangsan Hospital, Yangsan, Korea
| | | | - Yong Ju Lee
- Department of Pediatrics, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Kyung Hwan Lim
- Department of Internal Medicine, Armed Forces Capital Hospital, Seongnam, Korea
| | - You Hoon Jeon
- Department of Pediatrics, Hallym University Dongtan Sacred Heart Hospital, Dongtan, Korea
| | - Eun Jung Jo
- Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Young Koo Jee
- Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Hyun Jung Jin
- Department of Internal medicine, Yeungnam University College of Medicine, Daegu, Korea
| | - Sun Hee Choi
- Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea
| | - Gyu Young Hur
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Sang Heon Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Hoon Kim
- Department of Internal Medicine, Eulji Hospital, Eulji University School of Medicine, Seoul, Korea.
| | - Dae Hyun Lim
- Department of Pediatrics, Inha University School of Medicine and Environmental Health Center for Allergic Disease, Inha University Hospital, Incheon, Korea.
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21
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Kim DW, Kim CS, Kim HJ, Lee YM, Kim HJ, Kwon KB. The Effect of Germanium Treatment on Rain Shelter House Cultivation of Korean Ginseng (Panax ginseng C. A. Meyer). Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608510] [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: 10/18/2022]
Affiliation(s)
- DW Kim
- Jeollabukdo ARES Medicinal Resource Research Institute, Jinan, Korea, Republic of (South)
| | - CS Kim
- Jeollabukdo ARES Medicinal Resource Research Institute, Jinan, Korea, Republic of (South)
| | - HJ Kim
- Jeollabukdo ARES Medicinal Resource Research Institute, Jinan, Korea, Republic of (South)
| | - YM Lee
- Jeollabukdo ARES Medicinal Resource Research Institute, Jinan, Korea, Republic of (South)
| | - HJ Kim
- Jeollabukdo ARES Medicinal Resource Research Institute, Jinan, Korea, Republic of (South)
| | - KB Kwon
- National Institute of Horticultural & Herbal science, RDA, Eumseong, Korea, Republic of (South)
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22
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Kim GY, Lee YM, Kwon JH, Cho JH, Pan CJ, Starost MF, Mansfield BC, Chou JY. Glycogen storage disease type Ia mice with less than 2% of normal hepatic glucose-6-phosphatase-α activity restored are at risk of developing hepatic tumors. Mol Genet Metab 2017; 120:229-234. [PMID: 28096054 PMCID: PMC5346453 DOI: 10.1016/j.ymgme.2017.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 11/28/2016] [Revised: 01/09/2017] [Accepted: 01/09/2017] [Indexed: 10/20/2022]
Abstract
Glycogen storage disease type Ia (GSD-Ia), characterized by impaired glucose homeostasis and chronic risk of hepatocellular adenoma (HCA) and carcinoma (HCC), is caused by a deficiency in glucose-6-phosphatase-α (G6Pase-α or G6PC). We have previously shown that G6pc-/- mice receiving gene transfer mediated by rAAV-G6PC, a recombinant adeno-associated virus (rAAV) vector expressing G6Pase-α, and expressing 3-63% of normal hepatic G6Pase-α activity maintain glucose homeostasis and do not develop HCA/HCC. However, the threshold of hepatic G6Pase-α activity required to prevent tumor formation remained unknown. In this study, we constructed rAAV-co-G6PC, a rAAV vector expressing a codon-optimized (co) G6Pase-α and showed that rAAV-co-G6PC was more efficacious than rAAV-G6PC in directing hepatic G6Pase-α expression. Over an 88-week study, we showed that both rAAV-G6PC- and rAAV-co-G6PC-treated G6pc-/- mice expressing 3-33% of normal hepatic G6Pase-α activity (AAV mice) maintained glucose homeostasis, lacked HCA/HCC, and were protected against age-related obesity and insulin resistance. Of the eleven rAAV-G6PC/rAAV-co-G6PC-treated G6pc-/- mice harboring 0.9-2.4% of normal hepatic G6Pase-α activity (AAV-low mice), 3 expressing 0.9-1.3% of normal hepatic G6Pase-α activity developed HCA/HCC, while 8 did not (AAV-low-NT). Finally, we showed that the AAV-low-NT mice exhibited a phenotype indistinguishable from that of AAV mice expressing ≥3% of normal hepatic G6Pase-α activity. The results establish the threshold of hepatic G6Pase-α activity required to prevent HCA/HCC and show that GSD-Ia mice harboring <2% of normal hepatic G6Pase-α activity are at risk of tumor development.
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Affiliation(s)
- Goo-Young Kim
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States
| | - Young Mok Lee
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States
| | - Joon Hyun Kwon
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States
| | - Jun-Ho Cho
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States
| | - Chi-Jiunn Pan
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States
| | - Matthew F Starost
- Division of Veterinary Resources, National Institutes of Health, Bethesda, MD 20892, United States
| | - Brian C Mansfield
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States; Foundation Fighting Blindness, Columbia, MD 21046, United States
| | - Janice Y Chou
- Section on Cellular Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, United States.
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23
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Yang HJ, Kim YH, Lee B, Kong DY, Kim DK, Kim MA, Kim BS, Kim WY, Kim JH, Park Y, Park SY, Bae WY, Song K, Yang MS, Lee SM, Lee YM, Lee HJ, Cho JH, Jee HM, Choi JH, Yoo Y, Koh YI. Unmet Primary Physicians' Needs for Allergic Rhinitis Care in Korea. Allergy Asthma Immunol Res 2017; 9:265-271. [PMID: 28293933 PMCID: PMC5352578 DOI: 10.4168/aair.2017.9.3.265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 10/02/2016] [Accepted: 11/07/2016] [Indexed: 12/18/2022]
Abstract
Allergic rhinitis (AR) is one of the most common chronic allergic respiratory diseases worldwide. Various practical guidelines for AR have been developed and updated to improve the care of AR patients; however, up to 40% patients remain symptomatic. The unmet need for AR care is one of the greatest public health problems in the world. The gaps between guideline and real-world practice, and differences according to the region, culture, and medical environments may be the causes of unmet needs for AR care. Because there is no evidence-based AR practical guideline reflecting the Korean particularity, various needs are increasing. The purpose of the study was to evaluate whether existing guidelines are sufficient for AR patient management in real practice and whether development of regional guidelines to reflect regional differences is needed in Korea. A total of 99 primary physicians comprising internists, pediatricians, and otolaryngologists (n=33 for each) were surveyed by a questionnaire relating to unmet needs for AR care between June 2 and June 16 of 2014. Among 39 question items, participants strongly agreed on 15 items that existing guidelines were highly insufficient and needed new guidelines. However, there was some disagreement according to specialties for another 24 items. In conclusion, the survey results demonstrated that many physicians did not agree with the current AR guideline, and a new guideline reflecting Korean particularity was needed.
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Affiliation(s)
- Hyeon Jong Yang
- Department of Pediatrics, Pediatric Allergy and Respiratory Center, Soonchunhyang University College of Medicine, Seoul, Korea.,SCH Biomedical Informatics Research Unit, Soonchunhyang University Hospital, Seoul, Korea
| | - Young Hyo Kim
- Department of Otorhinolaryngology, Inha University College of Medicine, Incheon, Korea
| | - Bora Lee
- Department of Biostatistic Consulting, Clinical Trial Center, Soonchunhyang Medical Center, Bucheon, Korea
| | | | - Dong Kyu Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University Chuncheon Sacred Heart Hospital and Nano-Bio Regenerative Medical Institute, Hallym University College of Medicine, Chuncheon, Korea
| | - Mi Ae Kim
- Department of Pulmonology, Allergy and Critical Care Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Bong Seong Kim
- Department of Pediatrics, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | | | - Jeong Hee Kim
- Department of Pediatrics, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - Yang Park
- Department of Pediatrics, Wonkwang University Sanbon Hospital, Wonkwang University College of Medicine, Gunpo, Korea
| | | | - Woo Yong Bae
- Department of Otorhinolaryngology, Head and Neck Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Keejae Song
- Department of Otorhinolaryngology-Head & Neck Surgery, Catholic Kwandong Universtiy, International St. Mary's Hospital, Incheon, Korea
| | - Min Suk Yang
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Sang Min Lee
- Division of Pulmonology and Allergy, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | | | - Hyun Jong Lee
- Lee & Hong ENT, Sleep and Cosmetic Center, Seongnam, Korea
| | | | - Hye Mi Jee
- Derpartment of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Jeong Hee Choi
- Department of Pulmonology and Allergy, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea.
| | - Young Yoo
- Department of Pediatrics, Korea University Anam Hospital, Seoul, Korea.,Allergy Immunology Center, Korea University, Seoul, Korea.
| | - Young Il Koh
- Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea
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24
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Lee YM, Lee SY, Sasaki T, Kim K, Ahn D, Jung MC. Two different phase-change origins with chemical- and structural-phase-changes in C doped (1.5 wt.%) In 3Sb 1Te 2. Sci Rep 2016; 6:38663. [PMID: 27929133 PMCID: PMC5144130 DOI: 10.1038/srep38663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 11/14/2016] [Indexed: 11/09/2022] Open
Abstract
We fabricated C-doped (1.5 wt.%) In3Sb1Te2 (CIST) thin films with amorphous phase (a-CIST) using a sputter method. Two electrical-phase-changes at 250 and 275 °C were observed in the sheet resistance measurement. In order to understand the origin of these electrical-phase-changes, all samples were characterized by XRD, TEM, and HRXPS with synchrotron radiation. In a-CIST, only weak Sb-C bonding was observed. In the first electrical-phase-change at 250 °C, strong Sb-C bonding occurred without an accompanying structural/phase change (still amorphous). On the other hand, the second electrical-phase-change at 275 °C was due to the structural/phase change from amorphous to crystalline without a chemical state change.
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Affiliation(s)
- Y M Lee
- Beamline Department, Pohang Accelerator Laboratory (PAL), Pohang, 37673, Republic of Korea
| | - S Y Lee
- Beamline Department, Pohang Accelerator Laboratory (PAL), Pohang, 37673, Republic of Korea
| | - T Sasaki
- Biology Resources Section, Research Support Division, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
| | - K Kim
- AE Center, Samsung Advanced Institute of Technology, P. O. Box 111, Suwon, 440-600, Korea
| | - D Ahn
- Beamline Department, Pohang Accelerator Laboratory (PAL), Pohang, 37673, Republic of Korea
| | - M-C Jung
- Laboratroy for Organic Electronics, Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, 630-0192, Japan
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25
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Abstract
This study aimed to investigate the role of PIN1 on the hepatic differentiation of human dental pulp stem cells (hDPSCs) and its signaling pathway, as well as the potential therapeutic effects of hDPSC transplantation and PIN1 inhibition on CCl4 (carbon tetrachloride)-induced liver fibrosis in mice. The in vitro results showed that hepatic differentiation was suppressed by infection with adenovirus-PIN1 and promoted by PIN1 inhibitor juglone via the downregulation of Wnt3a and β-catenin. Compared with treatment with either hDPSC transplantation or juglone alone, the combination of hDPSCs and juglone into CCl4-injured mice significantly suppressed liver fibrosis and restored serum levels of alanine transaminase, aspartate transaminase, and ammonia. Collectively, the present study shows for the first time that PIN1 inhibition promotes hepatic differentiation of hDPSCs through the Wnt/β-catenin pathway. Furthermore, juglone in combination with hDPSC transplantation effectively treats liver fibrosis, suggesting that hDPSC transplantation with PIN1 inhibition may be a novel therapeutic candidate for the treatment of liver injury.
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Affiliation(s)
- H J Kim
- 1 Department of Oral Physiology, BK21 PLUS Project, and Institute of Translational Dental Sciences, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Y A Cho
- 2 Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration, and School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - Y M Lee
- 2 Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration, and School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - S Y Lee
- 2 Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration, and School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - W J Bae
- 2 Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration, and School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - E C Kim
- 2 Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration, and School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
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26
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Hussain S, Kenigsberg BB, Danahey K, Lee YM, Galecki PM, Ratain MJ, O'Donnell PH. Disease-drug database for pharmacogenomic-based prescribing. Clin Pharmacol Ther 2016; 100:179-90. [PMID: 26940584 DOI: 10.1002/cpt.364] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/04/2016] [Accepted: 02/28/2016] [Indexed: 01/04/2023]
Abstract
Providers have expressed a strong desire to have additional clinical decision-support tools to help with interpretation of pharmacogenomic results. We developed and tested a novel disease-drug association tool that enables pharmacogenomic-based prescribing to treat common diseases. First, 324 drugs were mapped to 484 distinct diseases (mean number of drugs treating each disease was 4.9; range 1-37). Then the disease-drug association tool was pharmacogenomically annotated, with an average of 1.8 pharmacogenomically annotated drugs associated/disease. Applying this tool to a prospectively enrolled >1,000 patient cohort from a tertiary medical center showed that 90% of the top ∼20 diseases in this population and ≥93% of patients could appropriately be treated with ≥1 medication with actionable pharmacogenomic information. When combined with clinical patient genotypes, this tool permits delivery of patient-specific pharmacogenomically informed disease treatment recommendations to inform the treatment of many medical conditions of the US population, a key initial step towards implementation of precision medicine.
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Affiliation(s)
- S Hussain
- Center for Personalized Therapeutics, University of Chicago, Chicago, Illinois, USA
| | - B B Kenigsberg
- Internal Medicine Residency Program, University of Chicago Medical Center, Chicago, Illinois, USA
| | - K Danahey
- Center for Personalized Therapeutics, University of Chicago, Chicago, Illinois, USA.,Center for Research Informatics, University of Chicago, Chicago, Illinois, USA
| | - Y M Lee
- Committee on Clinical Pharmacology and Pharmacogenomics, University of Chicago, Chicago, Illinois, USA
| | - P M Galecki
- Center for Personalized Therapeutics, University of Chicago, Chicago, Illinois, USA
| | - M J Ratain
- Center for Personalized Therapeutics, University of Chicago, Chicago, Illinois, USA.,Committee on Clinical Pharmacology and Pharmacogenomics, University of Chicago, Chicago, Illinois, USA.,Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - P H O'Donnell
- Center for Personalized Therapeutics, University of Chicago, Chicago, Illinois, USA.,Committee on Clinical Pharmacology and Pharmacogenomics, University of Chicago, Chicago, Illinois, USA.,Department of Medicine, University of Chicago, Chicago, Illinois, USA
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27
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Kwon J, Cho JH, Lee YM, Kim GY, Anduaga J, Chou J. 165. Liver-Directed Gene Therapy for Murine Glycogen Storage Disease Type IB. Mol Ther 2016. [DOI: 10.1016/s1525-0016(16)32974-4] [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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28
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Lee YM, Sung TY, Kim WB, Chung KW, Yoon JH, Hong SJ. Risk factors for recurrence in patients with papillary thyroid carcinoma undergoing modified radical neck dissection. Br J Surg 2016; 103:1020-5. [PMID: 27121346 DOI: 10.1002/bjs.10144] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/09/2015] [Accepted: 02/05/2016] [Indexed: 11/08/2022]
Abstract
BACKGROUND This study evaluated the impact of lymph node-related factors on the risk of and site of recurrence in patients who had papillary thyroid carcinoma with lymph node metastasis in the lateral compartment (classified as pN1b). METHODS Patients underwent total thyroidectomy with unilateral modified radical neck dissection for classical papillary thyroid carcinoma. Risk factors for recurrence were evaluated according to the pattern of recurrence. RESULTS A total of 324 patients were included in the study. The median follow-up was 63 (range 14-181) months. Recurrence was detected in 47 patients (14·5 per cent). In the multivariable analysis, a maximum diameter of metastatic lymph nodes larger than 2·0 cm (hazard ratio (HR) 1·15, 95 per cent c.i. 1·06 to 1·25; P = 0·033) and a central compartment metastatic lymph node ratio of more than 0·42 (HR 3·35, 1·65 to 6·79; P < 0·001) were identified as independent risk factors for locoregional recurrence. Age 45 years or older (HR 5·69, 1·24 to 26·12; P = 0·025) and extranodal extension of metastasis (HR 12·71, 1·64 to 98·25; P = 0·015) were risk factors for distant metastasis. In subgroup analysis of locoregional recurrence, several lymph node-related factors affected the risk of recurrence according to the specific site of metastasis. CONCLUSION Lymph node-related factors are of importance for the risk of recurrence in patients with classical papillary thyroid carcinoma classified as pN1b.
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Affiliation(s)
- Y M Lee
- Departments of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - T Y Sung
- Departments of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - W B Kim
- Departments of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - K W Chung
- Departments of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - J H Yoon
- Departments of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - S J Hong
- Departments of Surgery, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
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Moon BC, Kim WJ, Ji Y, Lee YM, Kang YM, Choi G. Molecular identification of the traditional herbal medicines, Arisaematis Rhizoma and Pinelliae Tuber, and common adulterants via universal DNA barcode sequences. Genet Mol Res 2016; 15:gmr7064. [PMID: 26909979 DOI: 10.4238/gmr.15017064] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Methods to identify Pinelliae Tuber and Arisaematis Rhizoma are required because of frequent reciprocal substitution between these two herbal medicines and the existence of several closely related plant materials. As a result of the morphological similarity of dried tubers, correct discrimination of authentic herbal medicines is difficult by conventional methods. Therefore, we analyzed DNA barcode sequences to identify each herbal medicine and the common adulterants at a species level. To verify the identity of these herbal medicines, we collected five authentic species (Pinellia ternata for Pinelliae Tuber, and Arisaema amurense, A. amurense var. serratum, A. erubescens, and A. heterophyllum for Arisaematis Rhizoma) and six common adulterant plant species. Maturase K (matK) and ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit (rbcL) genes were then amplified using universal primers. In comparative analyses of two DNA barcode sequences, we obtained 45 species-specific nucleotides sufficient to identify each species (except A. erubescens with matK) and 28 marker nucleotides for each species (except P. pedatisecta with rbcL). Sequence differences at corresponding positions of the two combined DNA barcodes provided genetic marker nucleotides that could be used to identify specimens of the correct species among the analyzed medicinal plants. Furthermore, we generated a phylogenetic tree showing nine distinct groups depending on the species. These results can be used to authenticate Pinelliae Tuber and Arisaematis Rhizoma from their adulterants and to identify each species. Thus, comparative analyses of plant DNA barcode sequences identified useful genetic markers for the authentication of Pinelliae Tuber and Arisaematis Rhizoma from several adulterant herbal materials.
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Affiliation(s)
- B C Moon
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - W J Kim
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Y Ji
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Y M Lee
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Y M Kang
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - G Choi
- K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
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30
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Choi HJ, Lee JC, Lee YM. Hourglass epidermoid inclusion cyst of the hand. J Hand Surg Eur Vol 2015; 40:749-50. [PMID: 24212414 DOI: 10.1177/1753193413511576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- H J Choi
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - J C Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Y M Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, Soonchunhyang University, Cheonan, Korea
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31
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Kim GY, Lee YM, Cho JH, Pan CJ, Jun HS, Springer DA, Mansfield BC, Chou JY. Mice expressing reduced levels of hepatic glucose-6-phosphatase-α activity do not develop age-related insulin resistance or obesity. Hum Mol Genet 2015; 24:5115-25. [PMID: 26089201 DOI: 10.1093/hmg/ddv230] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/15/2015] [Indexed: 12/26/2022] Open
Abstract
Glycogen storage disease type-Ia (GSD-Ia) is caused by a lack of glucose-6-phosphatase-α (G6Pase-α or G6PC) activity. We have shown that gene therapy mediated by a recombinant adeno-associated virus (rAAV) vector expressing human G6Pase-α normalizes blood glucose homeostasis in the global G6pc knockout (G6pc(-/-)) mice for 70-90 weeks. The treated G6pc(-/-) mice expressing 3-63% of normal hepatic G6Pase-α activity (AAV mice) produce endogenous hepatic glucose levels 61-68% of wild-type littermates, have a leaner phenotype and exhibit fasting blood insulin levels more typical of young adult mice. We now show that unlike wild-type mice, the lean AAV mice have increased caloric intake and do not develop age-related obesity or insulin resistance. Pathway analysis shows that signaling by hepatic carbohydrate response element binding protein that improves glucose tolerance and insulin signaling is activated in AAV mice. In addition, several longevity factors in the calorie restriction pathway, including the NADH shuttle systems, NAD(+) concentrations and the AMP-activated protein kinase/sirtuin 1/peroxisome proliferator-activated receptor-γ coactivator 1α pathway are upregulated in the livers of AAV mice. The finding that partial restoration of hepatic G6Pase-α activity in GSD-Ia mice not only attenuates the phenotype of hepatic G6Pase-α deficiency but also prevents the development of age-related obesity and insulin resistance seen in wild-type mice may suggest relevance of the G6Pase-α enzyme to obesity and diabetes.
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Affiliation(s)
- Goo-Young Kim
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
| | - Young Mok Lee
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
| | - Jun-Ho Cho
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
| | - Chi-Jiunn Pan
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
| | - Hyun Sik Jun
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
| | - Danielle A Springer
- Mouse Phenotyping Core Facility, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA and
| | - Brian C Mansfield
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and Foundation Fighting Blindness, Columbia, MD 21046, USA
| | - Janice Y Chou
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development and
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Fong SSM, Wong JYH, Chung LMY, Yam TTT, Chung JWY, Lee YM, Chow LPY, Luk WS, Ng SSM. Changes in heart-rate variability of survivors of nasopharyngeal cancer during Tai Chi Qigong practice. J Phys Ther Sci 2015; 27:1577-9. [PMID: 26157266 PMCID: PMC4483444 DOI: 10.1589/jpts.27.1577] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/31/2015] [Indexed: 01/08/2023] Open
Abstract
[Purpose] To explore the changes in heart-rate variability (HRV) of survivors of nasopharyngeal cancer (NPC) before, during, and after a Tai Chi (TC) Qigong exercise. [Subjects and Methods] Eleven survivors of NPC participated voluntarily in the study. The heart rate of each participant was measured continuously for 1 minute before the TC Qigong intervention, during the 5-minute TC Qigong intervention, and for 1 minute after the intervention, using a Polar heart-rate monitor. Spectral HRV was expressed in terms of normalised low frequency (LF) power, normalised high frequency (HF) power, and the low frequency/high frequency (LF/HF) power ratio. [Results] Both the LF-power and the HF-power components had significant time effects. However, the time effect of the LF/HF power ratio was not significant. Post hoc contrast analysis revealed a significant decrease in LF power and a concomitant increase in HF power during the 4th minute and 5th minute of the TC Qigong exercise. [Conclusion] Five minutes of TC Qigong exercise was found to improve HRV by increasing HF power and decreasing LF power, but these effects were transient. TC Qigong might be an appropriate exercise for improving the ANS function and psychological and cardiac health of survivors of NPC.
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Affiliation(s)
- Shirley S M Fong
- Institute of Human Performance, The University of Hong Kong: Pokfulam, Hong Kong
| | - Janet Y H Wong
- School of Nursing, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Louisa M Y Chung
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | - Timothy T T Yam
- Department of Physiotherapy, David Trench Rehabilitation Centre, Hong Kong
| | - Joanne W Y Chung
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | | | - Lina P Y Chow
- Department of Health and Physical Education, Hong Kong Institute of Education, Hong Kong
| | - W S Luk
- The Association of Licentiates of the Medical Council of Hong Kong, Hong Kong
| | - Shamay S M Ng
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong
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Mok Lee Y, Kwon J, Weinstein DA, Chou JY. 376. Correction of Metabolic Abnormalities in Murine Glycogen Storage Disease Type Ib by Gene Therapy. Mol Ther 2015. [DOI: 10.1016/s1525-0016(16)33985-5] [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] Open
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Lee YM, Kim GY, Pan CJ, Mansfield BC, Chou JY. Minimal hepatic glucose-6-phosphatase-α activity required to sustain survival and prevent hepatocellular adenoma formation in murine glycogen storage disease type Ia. Mol Genet Metab Rep 2015; 3:28-32. [PMID: 26937391 PMCID: PMC4750588 DOI: 10.1016/j.ymgmr.2015.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 03/06/2015] [Indexed: 12/01/2022] Open
Abstract
Glycogen storage disease type Ia (GSD-Ia), characterized by impaired glucose homeostasis and chronic risk of hepatocellular adenoma (HCA), is caused by a deficiency in glucose-6-phosphatase-α (G6Pase-α or G6PC) activity. In a previous 70–90 week-study, we showed that a recombinant adeno-associated virus (rAAV) vector-mediated gene transfer that restores more than 3% of wild-type hepatic G6Pase-α activity in G6pc−/− mice corrects hepatic G6Pase-α deficiency with no evidence of HCA. We now examine the minimal hepatic G6Pase-α activity required to confer therapeutic efficacy. We show that rAAV-treated G6pc−/− mice expressing 0.2% of wild-type hepatic G6Pase-α activity suffered from frequent hypoglycemic seizures at age 63–65 weeks but mice expressing 0.5–1.3% of wild-type hepatic G6Pase-α activity (AAV-LL mice) sustain 4–6 h of fast and grow normally to age 75–90 weeks. Despite marked increases in hepatic glycogen accumulation, the AAV-LL mice display no evidence of hepatic abnormalities, hepatic steatosis, or HCA. Interprandial glucose homeostasis is maintained by the G6Pase-α/glucose-6-phosphate transporter (G6PT) complex, and G6PT-mediated microsomal G6P uptake is the rate-limiting step in endogenous glucose production. We show that hepatic G6PT activity is increased in AAV-LL mice. These findings are encouraging for clinical studies of G6Pase-α gene-based therapy for GSD-Ia. Establish the minimal hepatic G6Pase-α activity restoration required to provide a blood glucose level that enables GSD-Ia mice grow to old age (75–90 weeks). Establish the minimal hepatic G6Pase-α activity restoration required that enables GSD-Ia mice grow to old age (75-90 weeks). Define the lowest dose for G6Pase-α gene therapy that provides efficacy in mice, which informs a phase I/II clinical trial design in human GSD-Ia.
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Key Words
- AAV, adeno-associated virus
- BW, body weight
- ER, endoplasmic reticulum
- G6P, glucose-6-phosphate
- G6PC, glucose-6-phosphatase-α gene
- G6PT, glucose-6-phosphate transporter
- G6Pase-α, glucose-6-phosphatase-α
- GPE, G6PC promoter and enhancer
- GSD-Ia, glycogen storage disease type Ia
- Gene therapy
- Glucose homeostasis
- Glucose-6-phosphate transporter
- HCA, hepatocellular adenoma
- Recombinant adeno-associated virus vector
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Affiliation(s)
- Young Mok Lee
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
| | - Goo-Young Kim
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
| | - Chi-Jiunn Pan
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
| | - Brian C Mansfield
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States; Foundation Fighting Blindness, Columbia, MD 21046, United States
| | - Janice Y Chou
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, United States
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Hwang CY, Lee I, Cho Y, Lee YM, Baek K, Jung YJ, Yang YY, Lee T, Rhee TS, Lee HK. Rhodococcus aerolatus sp. nov., isolated from subarctic rainwater. Int J Syst Evol Microbiol 2014; 65:465-471. [PMID: 25385992 DOI: 10.1099/ijs.0.070086-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive, rod-shaped and non-motile strain, designated PAMC 27367(T), was isolated from rainwater collected on the Bering Sea. Analysis of the 16S rRNA gene sequence of the strain showed an affiliation with the genus Rhodococcus. Phylogenetic analyses revealed that strain PAMC 27367(T) formed a robust clade with the type strains of Rhodococcus rhodnii, Rhodococcus aetherivorans and Rhodococcus ruber with 16S rRNA gene sequence similarities of 96.3 %, 95.8 % and 95.5 %, respectively. Cells of the strain grew optimally at 25 °C and at pH 6.5-7.0 in the presence of 0-2 % (w/v) sea salts. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, phosphatidylinositol mannoside and three unknown phospholipids. The major cellular fatty acids (>10 %) were iso-C16 : 0, C17 : 1ω8c and 10-methyl C17 : 0. Cell wall analysis showed that strain PAMC 27367(T) contained meso-diaminopimelic acid. The genomic DNA G+C content was 77.1 mol%. Based on the phylogenetic, chemotaxonomic and phenotypic data presented here, we propose a novel species with the name Rhodococcus aerolatus sp. nov., with PAMC 27367(T) ( = KCTC 29240(T) = JCM 19485(T)) as the type strain.
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Affiliation(s)
- C Y Hwang
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - I Lee
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Y Cho
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Y M Lee
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - K Baek
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Y-J Jung
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Y Y Yang
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - T Lee
- Department of Environmental Science, Hankuk University of Foreign Studies, 81 Oedae-ro, Yongin-si, Gyeonggi-do 449-791, Republic of Korea
| | - T S Rhee
- Division of Polar Ocean Environment, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - H K Lee
- Division of Polar Life Sciences, Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
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Abstract
Physiologic bioengineering of the oral, dental, and craniofacial complex requires optimized geometric organizations of fibrous connective tissues. A computer-designed, fiber-guiding scaffold has been developed to promote tooth-supporting periodontal tissue regeneration and functional restoration despite limited printing resolution for the manufacture of submicron-scaled features. Here, we demonstrate the use of directional freeze-casting techniques to control pore directional angulations and create mimicked topographies to alveolar crest, horizontal, oblique, and apical fibers of natural periodontal ligaments. For the differing anatomic positions, the gelatin displayed varying patterns of ice growth, determined via internal pore architectures. Regardless of the freezing coordinates, the longitudinal pore arrangements resulted in submicron-scaled diameters (~50 µm), along with corresponding high biomaterial porosity (~90%). Furthermore, the horizontal + coronal ([Formula: see text]) freezing orientation facilitated the creation of similar structures to major fibers in the periodontal ligament interface. This periodontal tissue-mimicking microenvironment is a potential tissue platform for the generation of naturally oriented ligamentous tissues consistent with periodontal ligament neogenesis.
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Affiliation(s)
- C H Park
- Department of Periodontology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
| | - K H Kim
- Department of Periodontology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - H F Rios
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Y M Lee
- Department of Periodontology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - W V Giannobile
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Y J Seol
- Department of Periodontology, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
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Lee JH, Oh SH, Lee YM, Kim YS, Son HJ, Jeong DJ, Whitley NC, Kim JJ. Study on Growth Curves of Longissimus dorsi Muscle Area, Backfat Thickness and Body Conformation for Hanwoo (Korean Native) Cows. Asian-Australas J Anim Sci 2014; 27:1250-3. [PMID: 25178367 PMCID: PMC4150190 DOI: 10.5713/ajas.2013.13797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 03/26/2014] [Accepted: 05/04/2014] [Indexed: 11/27/2022]
Abstract
The objective of this study was to estimate the parameters of Gompertz growth curves with the measurements of body conformation, real-time ultrasound longissimus dorsi muscle area (LMA) and backfat thickness (BFT) in Hanwoo cows. The Hanwoo cows (n = 3,373) were born in 97 Hanwoo commercial farms in the 17 cities or counties of Gyeongbuk province, Korea, between 2000 and 2007. A total of 5,504 ultrasound measurements were collected for the cows at the age of 13 to 165 months in 2007 and 2008. Wither height (HW), rump height (HR), the horizontal distance between the top of the hips (WH), and girth of chest (GC) were also measured. Analysis of variance was conducted to investigate variables affecting LMA and BFT. The effect of farm nested in location was included in the statistical model, as well as the effects of HW, HR, WH, and GC as covariates. All of the effects were significant in the analysis of variance for LMA and BFT (p<0.01), except for the HR effect for LMA. The two ultrasound measures and the four body conformation traits were fitted to a Gompertz growth curve function to estimate parameters. Upper asymptotic weights were estimated as 54.0 cm2, 7.67 mm, 125.6 cm, 126.4 cm, 29.3 cm, and 184.1 cm, for LMA, BFT, HW, HR, WH, and GC, respectively. Results of ultrasound measurements showed that Hanwoo cows had smaller LMA and greater BFT than other western cattle breeds, suggesting that care must be taken to select for thick BFT rather than an increase of only beef yield. More ultrasound records per cow are needed to get accurate estimates of growth curve, which, thus, helps producers select animals with high accuracy.
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Affiliation(s)
- J H Lee
- Department of Animal Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - S-H Oh
- Department of Animal Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Y M Lee
- School of Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea
| | - Y S Kim
- School of Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea
| | - H J Son
- Gyeongbuk Livestock Research Institute, Yeongju 750-871, Korea
| | - D J Jeong
- Gyeongbuk Livestock Research Institute, Yeongju 750-871, Korea
| | - N C Whitley
- Department of Animal Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - J J Kim
- School of Biotechnology, Yeungnam University, Gyeongsan 712-749, Korea
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Kim HS, Park YH, Nam H, Lee YM, Song K, Choi C, Ahn I, Park SR, Lee YH, Hwang DJ. Overexpression of the Brassica rapa transcription factor WRKY12 results in reduced soft rot symptoms caused by Pectobacterium carotovorum in Arabidopsis and Chinese cabbage. Plant Biol (Stuttg) 2014; 16:973-981. [PMID: 24552622 DOI: 10.1111/plb.12149] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 12/03/2013] [Indexed: 06/03/2023]
Abstract
Chinese cabbage (Brassica rapa L. ssp. pekinensis), an important vegetable crop, can succumb to diseases such as bacterial soft rot, resulting in significant loss of crop productivity and quality. Pectobacterium carotovorum ssp. carotovorum (Pcc) causes soft rot disease in various plants, including Chinese cabbage. To overcome crop loss caused by bacterial soft rot, a gene from Chinese cabbage was isolated and characterised in this study. We isolated the BrWRKY12 gene from Chinese cabbage, which is a group II member of the WRKY transcription factor superfamily. The 645-bp coding sequence of BrWRKY12 translates to a protein with a molecular mass of approximately 24.4 kDa, and BrWRKY12 was exclusively localised in the nucleus. Transcripts of BrWRKY12 were induced by Pcc infection in Brassica. Heterologous expression of BrWRKY12 resulted in reduced susceptibility to Pcc but not to Pseudomonas syringae pv. tomato in Arabidopsis. Defence-associated genes, such as AtPDF1.2 and AtPGIP2, were constitutively expressed in transgenic lines overexpressing BrWRKY12. The expression of AtWKRY12, which is the closest orthologue of BrWRKY12, was down-regulated by Pcc in Arabidopsis. However, the Atwrky12-2 mutants did not show any difference in response to Pcc, pointing to a difference in function of WRKY12 in Brassica and Arabidopsis. Furthermore, BrWRKY12 in Chinese cabbage also exhibited enhanced resistance to bacterial soft rot and increased the expression of defence-associated genes. In summary, BrWRKY12 confers enhanced resistance to Pcc through transcriptional activation of defence-related genes.
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Affiliation(s)
- H S Kim
- National Academy of Agricultural Science, Rural Development Administration, Suwon, South Korea
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Lee JH, Lee YM, Oh SH, Son HJ, Jeong DJ, Whitley N, Kim JJ. Estimation of Genetic Parameters for Real-time Ultrasound Measurements for Hanwoo Cows at Different Ages and Pregnancy Status. Asian-Australas J Anim Sci 2014; 27:155-60. [PMID: 25049938 PMCID: PMC4093205 DOI: 10.5713/ajas.2013.13430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 11/01/2013] [Accepted: 10/08/2013] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to estimate genetic parameters of ultrasound measurements for longissimus dorsi muscle area (LMA), backfat thickness (BFT), and marbling score (MS) in Hanwoo cows (N = 3,062) at the ages between 18 and 42 months. Data were collected from 100 Hanwoo breeding farms in Gyeongbuk province, Korea, in 2007 and 2008. The cows were classified into four different age groups, i.e. 18 to 22 months (the first pregnancy period), 23 to 27 (the first parturition), 28 to 32 (the second pregnancy), and 33 to 42 (the second parturition), respectively. For each age group, a multi-trait animal model was used to estimate variance components and heritabilities of the three traits. The averages of LMA, BFT, and MS measurements across the cows of all age groups were 50.1 cm2, 4.62 mm, and 3.04, respectively and heritability estimates were 0.09, 0.10, and 0.08 for the respective traits. However, when the data were analyzed in different age groups, heritability estimates of LMA and BFT were 0.24 and 0.47, respectively, for the cows of 18 to 22 months of age, and 0.21 for MS in the 28 to 32 months old cows. When the cows of all age groups were used, the estimates of genetic (phenotypic) correlations were 0.43 (0.35), −0.06 (0.34) and 0.21 (0.32) between LMA and BFT, LMA and MS, and BFT and MS, respectively. However, in the cow age group between 28 and 32 (18 and 22) months, the estimates of genetic (phenotypic) correlations were 0.05 (0.29), −0.15 (0.24) and 0.38 (0.24), for the respective pairs of traits. These results suggest that genetic, environmental, and phenotypic variations differ depending on cow age, such that care must be taken when ultrasound measurements are applied to selection of cows for meat quality.
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Affiliation(s)
- J H Lee
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - Y M Lee
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - S-H Oh
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - H J Son
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - D J Jeong
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - Niki Whitley
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
| | - J J Kim
- Gyeongbuk Provincial College, Yecheon, Gyeongbuk, Korea
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Kim J, Kim CS, Sohn E, Lee YM, Jo K, Shin SD, Kim JS. Aminoguanidine protects against apoptosis of retinal ganglion cells in Zucker diabetic fatty rats. Eur Rev Med Pharmacol Sci 2014; 18:1573-1578. [PMID: 24943965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The inhibition of advanced glycation end products (AGEs) and the receptor for AGEs (RAGE) mediated downstream signaling pathways have been suggested to have retinoprotective actions in diabetic retinopathy. Herein, we examined the protective effects of aminoguanidine (AG), an AGEs inhibitor, on diabetes-induced injury of retinal ganglion cells in the Zucker diabetic fatty (ZDF) rats. MATERIALS AND METHODS Seven-week-old male ZDF rats were treated with AG (50 mg/kg body weight) once a day orally for 13 weeks. Serum and vitreous concentration of AGEs were examined. Expressions of AGEs and its receptor (RAGE) were assessed by immunohistochemistry. Southwestern histochemistry was used to detect activated nuclear factor (NF)-κB. RESULTS At the end of the study, vitreal levels of AGEs were significantly reduced in ZDF rats treated with AG. Similary, immunohistochemical analysis showed that AG significantly reduced the positive areas for AGEs and RAGE. Furthermore, AG strongly inhibited the loss of retinal ganglion cells by apoptosis. AG also suppressed the activation of to NF-κB. CONCLUSIONS Our results suggest that AG has retinoprotective properties through not only direct inhibition of AGEs formation but also downregulation of NF-κB.
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Affiliation(s)
- J Kim
- Korean Medicine Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, South Korea.
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Lee YM, Ahn D, Kim JY, Kim YS, Cho S, Ahn M, Cho MH, Jung MS, Choi DK, Jung MC, Qi YB. Only the chemical state of Indium changes in Mn-doped In3Sb1Te2 (Mn: 10 at.%) during multi-level resistance changes. Sci Rep 2014; 4:4702. [PMID: 24736451 PMCID: PMC3988486 DOI: 10.1038/srep04702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 03/21/2014] [Indexed: 11/09/2022] Open
Abstract
We fabricated and characterized the material with Mn (10 at.%: atomic percent) doped In3Sb1Te2 (MIST) using co-sputtering and synchrotron radiation, respectively. The MIST thin film showed phase-changes at 97 and 320 °C, with sheet resistances of ~10 kΩ(sq) (amorphous), ~0.2 kΩ(sq) (first phase-change), and ~10 Ω(sq) (second phase-change). MIST did not exhibit any chemical separation or increased structural instability during either phase-change, as determined with high-resolution x-ray photoelectron spectroscopy. Chemical state changes were only depended for In without concomitant changes of Sb and Te. Apparently, doped Mn atoms can be induced with movement of only In atoms.
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Affiliation(s)
- Y M Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, 790-784, Republic of Korea
| | - D Ahn
- Pohang Accelerator Laboratory, POSTECH, Pohang, 790-784, Republic of Korea
| | - J-Y Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, 790-784, Republic of Korea
| | - Y S Kim
- Energy Harvest-Storage Research Center (EHSRC) and Department of Physics, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - S Cho
- Energy Harvest-Storage Research Center (EHSRC) and Department of Physics, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - M Ahn
- Department of Physics, Yonsei University, Seoul 120-749, Republic of Korea
| | - M-H Cho
- Department of Physics, Yonsei University, Seoul 120-749, Republic of Korea
| | - M S Jung
- Department of Material Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea
| | - D K Choi
- Department of Material Science and Engineering, Hanyang University, Seoul 133-791, Republic of Korea
| | - M-C Jung
- Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
| | - Y B Qi
- Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, 904-0495, Japan
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Kim YS, Sohn E, Jung DH, Lee YM, Kim CS, Kim J, Kim JS. Expression of heat shock protein 90 in the kidneys of diabetic db/db mice. Eur Rev Med Pharmacol Sci 2014; 18:2198-2204. [PMID: 25070827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To identify novel genes regulated in diabetic nephropathy. MATERIALS AND METHODS Total RNA from the renal cortex of db/+ and db/db mice was isolated and DNA microarrays specific for diabetes signaling pathways were used for expression profiling. Expression of mRNA and protein was determined by RT-PCR and western blotting. The terminal deoxynucleotidyl transferase-mediated biotinylated UTP nick-end labeling (TUNEL) assay and immunohistochemical staining were assessed in renal cortex of db/db mice. RESULTS Microarray data revealed that 7 genes show up- or down-regulated pattern and diabetic mice specifically decreased heat shock protein (Hsp) 90α expression of genes compared to control mice (diabetic mice 0.68 vs. control mice 1 relative density). Expression of Hsp90α mRNA and Hsp90 protein was significantly decreased in the renal cortex of diabetic mice. However, Hsp70 mRNA and protein expression was not changed. Apoptosis was increased in glomeruli of diabetic mice due to increased expression of cleaved caspase-3 and Bax. CONCLUSIONS Our results suggest that Hsp 90 expression was decreased in diabetic glomeruli and decreased Hsp90 expression may mediate podocyte apoptosis in type 2 diabetic kidneys.
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Affiliation(s)
- Y S Kim
- Korean Medicine-Based Herbal Drug Development Group, Herbal Medicine Research Division, Korea Institute of Oriental Medicine (KIOM), Daejeon, Republic of Korea.
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Lee YM, Pan CJ, Koeberl DD, Mansfield BC, Chou JY. The upstream enhancer elements of the G6PC promoter are critical for optimal G6PC expression in murine glycogen storage disease type Ia. Mol Genet Metab 2013; 110:275-80. [PMID: 23856420 PMCID: PMC3898731 DOI: 10.1016/j.ymgme.2013.06.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 05/08/2013] [Revised: 06/18/2013] [Accepted: 06/18/2013] [Indexed: 11/17/2022]
Abstract
Glycogen storage disease type-Ia (GSD-Ia) patients deficient in glucose-6-phosphatase-α (G6Pase-α or G6PC) manifest impaired glucose homeostasis characterized by fasting hypoglycemia, growth retardation, hepatomegaly, nephromegaly, hyperlipidemia, hyperuricemia, and lactic acidemia. Two efficacious recombinant adeno-associated virus pseudotype 2/8 (rAAV8) vectors expressing human G6Pase-α have been independently developed. One is a single-stranded vector containing a 2864-bp of the G6PC promoter/enhancer (rAAV8-GPE) and the other is a double-stranded vector containing a shorter 382-bp minimal G6PC promoter/enhancer (rAAV8-miGPE). To identify the best construct, a direct comparison of the rAAV8-GPE and the rAAV8-miGPE vectors was initiated to determine the best vector to take forward into clinical trials. We show that the rAAV8-GPE vector directed significantly higher levels of hepatic G6Pase-α expression, achieved greater reduction in hepatic glycogen accumulation, and led to a better toleration of fasting in GSD-Ia mice than the rAAV8-miGPE vector. Our results indicated that additional control elements in the rAAV8-GPE vector outweigh the gains from the double-stranded rAAV8-miGPE transduction efficiency, and that the rAAV8-GPE vector is the current choice for clinical translation in human GSD-Ia.
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Affiliation(s)
- Young Mok Lee
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Chi-Jiunn Pan
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Dwight D. Koeberl
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina 27710
| | - Brian C. Mansfield
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
- Foundation Fighting Blindness, Columbia, MD 21046
| | - Janice Y. Chou
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
- Correspondence should be addressed to: Building 10, Room 9D42, NIH 10 Center Drive, Bethesda, MD 20892-1830 Tel: 301-496-1094 Fax: 301-402-6035
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Kang OH, Kim SB, Seo YS, Joung DK, Mun SH, Choi JG, Lee YM, Kang DG, Lee HS, Kwon DY. Curcumin decreases oleic acid-induced lipid accumulation via AMPK phosphorylation in hepatocarcinoma cells. Eur Rev Med Pharmacol Sci 2013; 17:2578-2586. [PMID: 24142602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND AND OBJECTIVES Non-alcoholic fatty liver disease (NAFLD) is one of the most common metabolic syndromes and is characterized by the accumulation of hepatic triglycerides (TG), which result from an imbalance between uptake, synthesis, export, and oxidation of fatty acids. Curcumin is a polyphenol derived from the herbal remedy and dietary spice turmeric, was found to prevent obesity and diabetes in mouse models. However, a hypolipidemic effect of curcumin in oleic acid- induced hepatocarcinoma cells has not been reported. In this study, we examined the effect of curcumin on reducing lipid accumulation in hepatic cells. MATERIALS AND METHODS Hepatocytes were treated with oleic acid (OA) containing with or without curcumin to observe the lipid accumulation by Oil Red O stain. We also tested the effects of curcumin on triglycerides (TG) and total cholesterol (TC) in HepG2 cells. Western blot and reverse transcription polymerase chain reaction (RT-PCR) was used to measure sterol regulatory element binding proteins-1 (SREBP-1), fatty acid synthase (FAS), peroxisome proliferator-activated receptor (PPAR)-α, and adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) expression. RESULTS Curcumin suppressed OA-induced lipid accumulation and TG and TC levels. Also, curcumin decreased hepatic lipogenesis such as SREBP-1, and FAS. Besides, we also found out the antioxidative effect of curcumin by increasing the expression of PPARα. Curcumin increased AMPK phosphorylation in hepatocytes. CONCLUSIONS These results indicated that curcumin has the same ability to activate AMPK and then reduce SREBP-1, and FAS expression, finally leading to inhibit hepatic lipogenesis and hepatic antioxidative ability. In this report, we found curcumin exerted a regulatory effect on lipid accumulation by decreasing lipogenesis in hepatocyte. Therefore, curcumin extract may be active in the prevention of fatty liver.
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Affiliation(s)
- O H Kang
- Department of Oriental Pharmacy, College of Pharmacy, Wonkwang University, Wonkwang Oriental Medicines Research Institute, Institute of Biotechnology, Iksan, Jeonbuk, Republic of Korea.
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Chung JH, Kim YS, Noh K, Lee YM, Chang SW, Kim EC. Deferoxamine promotes osteoblastic differentiation in human periodontal ligament cells via the nuclear factor erythroid 2-related factor-mediated antioxidant signaling pathway. J Periodontal Res 2013; 49:563-73. [PMID: 24111577 DOI: 10.1111/jre.12136] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Recently it was reported that deferoxamine (DFO), an iron chelator, stimulates bone formation from MG63 and mesenchymal stem cells, but inhibits differentiation in rat calvarial cells; however, the effect of DFO on osteoblastic differentiation in human periodontal ligament cells (hPDLCs) has not been reported. The aim of this study was to investigate the effects and the possible underlying mechanism of DFO on osteoblastic differentiation of hPDLCs. MATERIAL AND METHODS The effect of DFO on osteoblast differentiation was determined by the staining intensity of calcium deposits with Alizarin red and by RT-PCR analysis of the expression of osteoblastic markers. Signal transduction pathways were analyzed by western blotting. RESULTS DFO increased osteogenic differentiation in a concentration-dependent manner by expression of the mRNA for differentiation markers and calcium nodule formation. Exposure of hPDLCs to DFO resulted in increases in the production of reactive oxygen species and in the levels of nuclear factor erythroid 2-related factor (Nrf2) protein in nuclear extractions, as well as a dose-dependent increase in the expression of Nrf2 target genes, including glutathione (GSH), glutathione S-transferase, γ-glutamylcysteine lygase, glutathione reductase and glutathione peroxidase. Pretreatment with Nrf2 small interfering RNA, GSH depletion by buthionine sulfoximine and diethyl maleate, and with antioxidants by N-acetylcysteine and vitamin E, blocked DFO-stimulated osteoblastic differentiation. Furthermore, pretreatment with GSH depletion and antioxidants blocked DFO-induced p38 MAPK, ERK, JNK and nuclear factor-kappaB pathways. CONCLUSION These data indicate, for the first time, that nontoxic DFO promotes osteoblastic differentiation of hPDLCs via modulation of the Nrf2-mediated antioxidant pathway.
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Affiliation(s)
- J H Chung
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea
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Hartono JL, Aung MO, Dan YY, Gowans M, Lim K, Lee YM, Lee GH, Low HC, Tan PS, Thwin MA, Soon C, Chiu LL, Khoo MJ, Koay E, Lim SG. Resolution of adefovir-related nephrotoxicity by adefovir dose-reduction in patients with chronic hepatitis B. Aliment Pharmacol Ther 2013; 37:710-9. [PMID: 23432107 DOI: 10.1111/apt.12251] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 10/08/2012] [Accepted: 01/27/2013] [Indexed: 12/17/2022]
Abstract
BACKGROUND Chronic hepatitis B patients (CHB) treated with adefovir were followed up to evaluate nephrotoxicity and its outcome. AIM To assess the incidence of renal dysfunction during adefovir therapy in Asian patients and factors associated with it, and evaluate strategies to improve adefovir-related renal dysfunction and their impact on viral suppression. METHODS Chronic hepatitis B clinic patients from a tertiary hospital on adefovir treatment, with their clinical and laboratory parameters were extracted from the hospital electronic clinical database in an observational study design. Patients were excluded if they had liver/renal transplant, baseline renal impairment or were on dialysis. Adefovir-related renal dysfunction was defined as adefovir-related abnormal serum creatinine (ARASC) > 125 μmol/L (males), >90 μmol/L (females); adefovir-related abnormal GFR <60 mL/min; and adefovir-related increased serum creatinine >0.5 mg/dL, without other known causes of nephrotoxicity. RESULTS A total of 271/383 adefovir-treated patients were suitable for analysis and 33(12%) patients developed abnormal serum creatinine. Cumulative increase in proportion of patients with ARASC was 33.8% and GFR ≤60 mL/min was 38.3% by 6 years, while serum creatinine increase ≥0.5 mg/dL was 21.48% by 5 years. Using multivariate analysis, the only independent baseline predictor of ARASC was GFR ≤76.1 mL/min. Patients who had ARASC had similar levels of viral suppression to those who did not have ARASC. Those who had ARASC either continued adefovir (24%), switched therapy (24%) or had adefovir dose reduction (52%). ARASC resolved and GFR normalised in almost all patients after either switching therapy or reducing adefovir dose, with no difference between the two strategies (P = 0.737). Those with adefovir dose reduction had no significant increase in HBV DNA (P = 0.170). CONCLUSIONS Adefovir-related renal dysfunction occurred in a significant number of adefovir-treated patients, but reduction of the dose led to renal improvement without compromising treatment efficacy.
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Affiliation(s)
- J L Hartono
- Department of Gastroenterology and Hepatology, National University of Singapore, Singapore
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Hur J, Kim S, Lee P, Lee YM, Choi SY. The protective effects of oxyresveratrol imine derivative against hydrogen peroxide-induced cell death in PC12 cells. Free Radic Res 2013; 47:212-8. [PMID: 23298159 DOI: 10.3109/10715762.2012.762769] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Oxyresveratrol (2',3,4',5-tetrahydroxystilbene) is a naturally occurring ingredient found in mulberries that shows potential as an antioxidant, anti-inflammatory, and neuroprotective agent. This study was performed to identify materials similar to oxyresveratrol that may have more effective antioxidant properties. We synthesized a stilbene analog referred to as Compound 1 (2',3,4',5-tetramethoxystilbene); a benzamide analog referred to as Compound 2 ((2,4-dimethoxyphenyl)-3,5-dimethoxybenzamide); and three imine analogs referred to as Compound 3 (3,5-dimethoxybenzylidene)-(2,4-dimethoxyphenylamine), Compound 4 ((4-methoxybenzylidene)-(3-methoxyphenyl)amine), and Compound 5 ((4-methoxybenzylidene)phenylamine). The cytoprotective effects of these compounds were subsequently evaluated using hydrogen peroxide-treated PC12 cells. The cytoprotective effects of the imine analogs were greater than the effects of oxyresveratrol and the other analogs at concentrations of 200 μM. The Compound 3, which is the most effective imine analog of oxyresveratrol, exhibited these cytoprotective effects against hydrogen peroxide-induced oxidative stress through the regulation of heme oxygenase-1 (HO-1) expression and the translocation of nuclear factor E2-related factor 2 (Nrf2). Our results suggest that imine analogs of oxyresveratrol may be useful agents in reducing neuronal oxidative damage.
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Affiliation(s)
- J Hur
- Korea Food Research Institute, Seongnam, South Korea
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Lee YM, Jun HS, Pan CJ, Lin SR, Wilson LH, Mansfield BC, Chou JY. Prevention of hepatocellular adenoma and correction of metabolic abnormalities in murine glycogen storage disease type Ia by gene therapy. Hepatology 2012; 56:1719-29. [PMID: 22422504 PMCID: PMC3477505 DOI: 10.1002/hep.25717] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 02/29/2012] [Indexed: 12/07/2022]
Abstract
UNLABELLED Glycogen storage disease type Ia (GSD-Ia), which is characterized by impaired glucose homeostasis and chronic risk of hepatocellular adenoma (HCA), is caused by deficiencies in the endoplasmic reticulum (ER)-associated glucose-6-phosphatase-α (G6Pase-α or G6PC) that hydrolyzes glucose-6-phosphate (G6P) to glucose. G6Pase-α activity depends on the G6P transporter (G6PT) that translocates G6P from the cytoplasm into the ER lumen. The functional coupling of G6Pase-α and G6PT maintains interprandial glucose homeostasis. We have shown previously that gene therapy mediated by AAV-GPE, an adeno-associated virus (AAV) vector expressing G6Pase-α directed by the human G6PC promoter/enhancer (GPE), completely normalizes hepatic G6Pase-α deficiency in GSD-Ia (G6pc(-/-) ) mice for at least 24 weeks. However, a recent study showed that within 78 weeks of gene deletion, all mice lacking G6Pase-α in the liver develop HCA. We now show that gene therapy mediated by AAV-GPE maintains efficacy for at least 70-90 weeks for mice expressing more than 3% of wild-type hepatic G6Pase-α activity. The treated mice displayed normal hepatic fat storage, had normal blood metabolite and glucose tolerance profiles, had reduced fasting blood insulin levels, maintained normoglycemia over a 24-hour fast, and had no evidence of hepatic abnormalities. After a 24-hour fast, hepatic G6PT messenger RNA levels in G6pc(-/-) mice receiving gene therapy were markedly increased. Because G6PT transport is the rate-limiting step in microsomal G6P metabolism, this may explain why the treated G6pc(-/-) mice could sustain prolonged fasts. The low fasting blood insulin levels and lack of hepatic steatosis may explain the absence of HCA. CONCLUSION These results confirm that AAV-GPE-mediated gene transfer corrects hepatic G6Pase-α deficiency in murine GSD-Ia and prevents chronic HCA formation.
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Affiliation(s)
- Young Mok Lee
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Hyun Sik Jun
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Chi-Jiunn Pan
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Su Ru Lin
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Lane H. Wilson
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892
| | - Brian C. Mansfield
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892,Foundation Fighting Blindness, Columbia, MD 21046
| | - Janice Y. Chou
- Section on Cellular Differentiation, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892,Correspondence should be addressed to: Janice Y. Chou, Building 10, Room 9D42, NIH, 10 Center Drive, Bethesda, MD 20892-1830, Tel: 301-496-1094, Fax: 301-402-6035,
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Kwon YJ, Kang BH, Bae SY, Seo JH, Kim JY, Lee EA, Wang JK, Lee YM, Go KJ, Pyo HJ, Lee JB. CALCIUM REQUIREMENT AFTER PARATHYROIDECTOMY (PTX) IN SECONDARY HYPERPARATHYROIDISM (2° HPT). Kidney Res Clin Pract 2012. [DOI: 10.1016/j.krcp.2012.04.449] [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] Open
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Lee SH, Choi IH, Jeon YK, Park SJ, Lee HK, Lee YM, Chang CL, Kim YS, Lee MK, Park SK. Association between the interleukin-18 promoter polymorphism and pulmonary tuberculosis in a Korean population. Int J Tuberc Lung Dis 2012; 15:1246-51, i. [PMID: 21943853 DOI: 10.5588/ijtld.11.0031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To examine the role of the -667G/T, -618A/C and -148G/C single nucleotide polymorphisms in the promoter region of the human interleukin (IL) 18 gene in the development of pulmonary tuberculosis (PTB), and its radiographic characteristics and severity. DESIGN Differences in the allele and genotype distributions of the -667G/T, -618A/C, and -148G/C polymorphisms between 251 patients with PTB and 225 healthy controls, between patients with single- and multilobe involvement, and between patients with and without cavities were explored. Serum IL-18 levels were measured using an enzyme-linked immunosorbent assay. RESULTS The -148G/G genotype was more common in patients with cavities than in those without (82.8% vs. 70.9%, P = 0.04), but an analogous trend was not observed for the -667G/T and -618A/C genotypes. However, there were no significant differences in allele and genotype distributions between patients with PTB and healthy controls, or between patients with single- and multilobe involvement (P > 0.05). Serum IL-18 levels were higher in patients with cavities (P = 0.01) and in patients with the -148G/G genotype (P = 0.02). CONCLUSION Considering serum IL-18 levels, the -148G/G genotype is associated with a cavitary formation of PTB rather than its development.
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Affiliation(s)
- S H Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
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