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Lee NK, Lee Y, Shin DS, Ra J, Choi YM, Ryu BH, Lee J, Park E, Paik HD. Hepatoprotective Effect of Lactiplantibacillus plantarum DSR330 in Mice with High Fat Diet-Induced Nonalcoholic Fatty Liver Disease. J Microbiol Biotechnol 2024; 34:399-406. [PMID: 38247213 PMCID: PMC10940777 DOI: 10.4014/jmb.2310.10026] [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: 10/19/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 01/23/2024]
Abstract
Lactiplantibacillus plantarum DSR330 (DSR330) has been examined for its antimicrobials production and probiotics. In this study, the hepatoprotective effects of DSR330 were examined against non-alcoholic fatty liver disease (NAFLD) in a high-fat diet (HFD)-fed C57BL/6 mouse model. To induce the development of fatty liver, a HFD was administered for five weeks, and then silymarin (positive control) or DSR330 (108 or 109 CFU/day) was administered along with the HFD for seven weeks. DSR330 significantly decreased body weight and altered serum and hepatic lipid profiles, including a reduction in triglyceride, total cholesterol, and low-density lipoprotein cholesterol levels compared to those in the HFD group. DSR330 significantly alleviated HFD-related hepatic injury by inducing morphological changes and reducing the levels of biomarkers, including AST, ALT, and ALP. Additionally, DSR330 alleviated the expression of SREBP-1c, ACC1, FAS, ACO, PPARα, and CPT-1 in liver cells. Insulin and leptin levels were decreased by DSR330 compared to those observed in the HFD group. However, adiponectin levels were increased, similar to those observed in the ND group. These results demonstrate that L. plantarum DSR330 inhibited HFD-induced hepatic steatosis in mice with NAFLD by modulating various signaling pathways. Hence, the use of probiotics can lead to hepatoprotective effects.
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Affiliation(s)
- Na-Kyoung Lee
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Republic of Korea
| | - Yunjung Lee
- Department of Food and Nutrition, Kyungnam University, Changwon 51767, Republic of Korea
| | - Da-Soul Shin
- Department of Food and Nutrition, Kyungnam University, Changwon 51767, Republic of Korea
| | - Jehyeon Ra
- FM MI center, Daesang Wellife, Seoul 03130, Republic of Korea
| | - Yong-Min Choi
- FM MI center, Daesang Wellife, Seoul 03130, Republic of Korea
| | - Byung Hee Ryu
- Jongga R&D product Division, Daesang, Seoul 03130, Republic of Korea
| | - Jinhyeuk Lee
- FM MI center, Daesang Wellife, Seoul 03130, Republic of Korea
| | - Eunju Park
- Department of Food and Nutrition, Kyungnam University, Changwon 51767, Republic of Korea
| | - Hyun-Dong Paik
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Republic of Korea
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Lee JH, Ko YB, Choi YM, Kim J, Cho HD, Choi H, Song HY, Han JM, Cha GH, Lee YH, Kim JM, Kim WS, Byun EB, Yuk JM. CM1, a Chrysin Derivative, Protects from Endotoxin-Induced Lethal Shock by Regulating the Excessive Activation of Inflammatory Responses. Nutrients 2024; 16:641. [PMID: 38474770 DOI: 10.3390/nu16050641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
Sepsis, a leading cause of death worldwide, is a harmful inflammatory condition that is primarily caused by an endotoxin released by Gram-negative bacteria. Effective targeted therapeutic strategies for sepsis are lacking. In this study, using an in vitro and in vivo mouse model, we demonstrated that CM1, a derivative of the natural polyphenol chrysin, exerts an anti-inflammatory effect by inducing the expression of the ubiquitin-editing protein TNFAIP3 and the NAD-dependent deacetylase sirtuin 1 (SIRT1). Interestingly, CM1 attenuated the Toll-like receptor 4 (TLR4)-induced production of inflammatory cytokines by inhibiting the extracellular-signal-regulated kinase (ERK)/MAPK and nuclear factor kappa B (NF-κB) signalling pathways. In addition, CM1 induced the expression of TNFAIP3 and SIRT1 on TLR4-stimulated primary macrophages; however, the anti-inflammatory effect of CM1 was abolished by the siRNA-mediated silencing of TNFAPI3 or by the genetic or pharmacologic inhibition of SIRT1. Importantly, intravenous administration of CM1 resulted in decreased susceptibility to endotoxin-induced sepsis, thereby attenuating the production of pro-inflammatory cytokines and neutrophil infiltration into the lung compared to control mice. Collectively, these findings demonstrate that CM1 has therapeutic potential for diverse inflammatory diseases, including sepsis.
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Affiliation(s)
- Jae-Hyung Lee
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Young-Bok Ko
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Obstetrics & Gynecology, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Yong-Min Choi
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Jinju Kim
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Hwan-Doo Cho
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Hyeonil Choi
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Ha-Yeon Song
- Korea Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Jeonbuk, Republic of Korea
| | - Jeong-Moo Han
- Korea Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Jeonbuk, Republic of Korea
| | - Guang-Ho Cha
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Young-Ha Lee
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Jin-Man Kim
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Pathology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
| | - Woo-Sik Kim
- Functional Biomaterial Research Center, Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Jeonbuk, Republic of Korea
| | - Eui-Baek Byun
- Korea Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Jeonbuk, Republic of Korea
| | - Jae-Min Yuk
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon 35015, Republic of Korea
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Kim SI, Choi Y. Botulinum Toxin Injection for Intractable Pain in Cancer Patients With Psoas Muscle Invasion. J Pain Symptom Manage 2022; 63:e441-e444. [PMID: 34890725 DOI: 10.1016/j.jpainsymman.2021.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/24/2021] [Accepted: 11/29/2021] [Indexed: 11/21/2022]
Abstract
Muscle invasion (MI) in patients with far-advanced cancer is often accompanied with pain. Conventional treatments used for pain relief may be associated with several side effects. We describe two cases of botulinum toxin injection (BTI) for relieving intractable pain in patients of far-advanced cancer having MI. The patients presented with persistent intractable pain that did not respond to conventional treatments, such as analgesic medications, epidural steroid injection, and radiotherapy. BTI relieved the intractable pain in these cases for at least 9-12 weeks without any reported side effects. We suggest that BTI can be an alternative method to relieve intractable pain associated with MI in patients with far-advanced cancer.
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Affiliation(s)
- Se Il Kim
- Department of Rehabilitation Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - YongMin Choi
- Department of Rehabilitation Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Republic of Korea.
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Hoa VB, Seo HW, Seong PN, Cho SH, Kang SM, Kim YS, Moon SS, Choi YM, Kim JH, Seol KH. Back-fat thickness as a primary index reflecting the yield and overall acceptance of pork meat. Anim Sci J 2021; 92:e13515. [PMID: 33522042 DOI: 10.1111/asj.13515] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/19/2020] [Accepted: 04/30/2020] [Indexed: 11/29/2022]
Abstract
Predicting aspects of lean meat yield and eating quality of pork based on some particular carcass traits become increasingly important from an economic profitability point of view. The present study aimed to determine the relationship between the back-fat (BF) thickness with lean meat yield and meat quality traits of crossbred pigs. A total of 220 crossbred pigs [(Landrace × Yorkshire) ♀ × Duroc ♂] reared under identical conditions and harvested at 180 days old were slaughtered and screened for BF thickness. Four BF thickness groups: 12-15, 16-20, 21-25, and 26-30 mm were classified, and longissimus dorsi (LD) muscles from these groups were used to analyze meat quality characteristics. Results showed that increasing BF thickness decreased the lean meat yield and loin lean area. Increasing BF thickness up to 26-30 mm increased intramuscular fat content and pH of LD muscles. The LD muscles of the thicker BF (21-30 mm) groups received significantly higher flavor, juiciness, and overall acceptability scores than those of the thinner back-fat (12-20 mm) groups. Overall, when all the pre-harvest factors are kept the same, BF thickness could be considered as a primary index for predicting lean meat yield, and the minimal back-fat thickness of 21-30 mm is required to improve the overall acceptability of pork meat.
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Affiliation(s)
- Van-Ba Hoa
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Hyun-Woo Seo
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Pil-Nam Seong
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Soo-Hyun Cho
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Sun-Moon Kang
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Yun-Seok Kim
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | | | - Yong-Min Choi
- National Institute of Agricultural Sciences, RDA, Wanju, Korea
| | - Jin-Hyoung Kim
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
| | - Kuk-Hwan Seol
- National Institute of Animal Science, Rural Development Administration, Wanju, Korea
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Seo HW, Ba HV, Seong PN, Kim YS, Kang SM, Seol KH, Kim JH, Moon SS, Choi YM, Cho S. Relationship between body size traits and carcass traits with primal cuts yields in Hanwoo steers. Anim Biosci 2020; 34:127-133. [PMID: 32819065 PMCID: PMC7888490 DOI: 10.5713/ajas.19.0809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 06/22/2020] [Indexed: 11/29/2022] Open
Abstract
Objective This study was conducted to evaluate the correlation between body size traits, carcass traits, and primal cuts in Hanwoo steers. Methods Sixty-one beef carcasses were classified for conformation and primal cut weight. Additionally, carcass weight, fat thickness, carcass dimensions, and longissimus muscle area were determined to complement the grading. Results The average live weight and cold carcass weight were 759 and 469 kg, respectively. The mean carcass meat, fat, and bone proportions were 551, 298, and 151 g/kg, respectively. Primal cuts weights showed significant positive correlations (p<0.001) of 0.42 to 0.82 with live weight, carcass weight, and longissimus muscle area and a significant negative correlation with carcass fat (without shank, −0.38 to −0.10). Primal cut weights were positively correlated (p<0.01) with carcass length (0.41 to 0.77), forequarter length (0.33 to 0.57), 6th lumbar vertebrae–heel length (0.33 to 0.59), 7th cervical vertebrae carcass breadth (0.35 to 0.58), 5th to 6th thoracic vertebrae breadth (0.36 to 0.65), 7th to 8th thoracic vertebrae girth (0.38 to 0.63), and coxae girth (0.34 to 0.56) and non-significantly related to cervical vertebrae length and coxae thickness. Conclusion There was a high correlation among live weight, carcass weight, longissimus muscle area, carcass length, 7th cervical vertebrae carcass breadth, 5th to 6th thoracic vertebrae breadth, and 7th to 8th thoracic vertebrae girth of the primal cuts yield. The correlation between fat and primal cut yields was highly significant and negative. Carcass length and 7th to 8th thoracic vertebrae girth, appear to be the most important traits affecting primal cut yields.
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Affiliation(s)
- Hyun-Woo Seo
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Hoa Van Ba
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Pil-Nam Seong
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Yun-Seok Kim
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Sun-Moon Kang
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Kuk-Hwan Seol
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Jin-Hyoung Kim
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | | | - Yong-Min Choi
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
| | - Soohyun Cho
- National Institute of Animal Science, RDA, Wanju 55365, Korea
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Park CH, Lee B, Oh E, Kim YS, Choi YM. Combined effects of sous-vide cooking conditions on meat and sensory quality characteristics of chicken breast meat. Poult Sci 2020; 99:3286-3291. [PMID: 32475464 PMCID: PMC7597729 DOI: 10.1016/j.psj.2020.03.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/19/2020] [Indexed: 11/18/2022] Open
Abstract
This study investigated the combined effects of cooking temperature and time on the meat and eating quality characteristics of the sous-vide chicken breast. For the control group, chicken breast samples were cooked in a convection oven until the internal temperature reached 71°C. Each sample for sous-vide cooking was vacuum packaged and then cooked under continuous thermocontrolled conditions in a water bath at 6 combinations of cooking temperature (60 and 70°C) and time (1, 2, and 3 h). Sous-vide cooked chicken meat at 60°C for 1 h (SV60-1h) showed lower cooking loss (6.58 vs. 26.5%, P < 0.05), Warner-Bratzler shear force (21.7 vs. 29.1 N, P < 0.05), and hardness (9.40 vs. 17.3 N, P < 0.05) than meat cooked by conventional oven. Similar to the objective tenderness parameters, cooked chicken meat from the SV60 treatments for all cooking times showed higher scores in all the tenderness attributes than the control group (P < 0.05). However, a higher flavor intensity was observed in the SV70-3h and control groups than in the SV60 treatments (P < 0.05). Owing to a lesser developed flavor in chicken meat from the SV60-1h treatment, the SV60-2h and 3h treatments were assigned a higher acceptability rating for overall impression (P < 0.05). Therefore, cooking temperature and time of sous-vide significantly influenced the physicochemical and palatability characteristics of chicken breast. In this study, the optimum conditions for the sous-vide chicken breast are to continuously cook at 60°C for 2 to 3 h to improve sensory quality characteristics without reducing the water-holding capacity.
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Affiliation(s)
- C H Park
- Department of Integrated Biomedical and Life Sciences, Korea University, Seoul, South Korea; Department of Hotel and Food Service Culinary Art, Daejeon Health Institute of Technology, Daejeon, South Korea
| | - B Lee
- Department of Animal Sciences, Kyungpook National University, Sangju, South Korea
| | - E Oh
- Department of Animal Sciences, Kyungpook National University, Sangju, South Korea
| | - Y S Kim
- Department of Integrated Biomedical and Life Sciences, Korea University, Seoul, South Korea.
| | - Y M Choi
- Department of Animal Sciences, Kyungpook National University, Sangju, South Korea.
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Hoa VB, Cho SH, Seong PN, Kang SM, Kim YS, Moon SS, Choi YM, Kim JH, Seol KH. Quality characteristics, fatty acid profiles, flavor compounds and eating quality of cull sow meat in comparison with commercial pork. Asian-Australas J Anim Sci 2019; 33:640-650. [PMID: 31480159 PMCID: PMC7054608 DOI: 10.5713/ajas.19.0262] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/23/2019] [Indexed: 11/27/2022]
Abstract
Objective Although the slaughter of cull sows (CS) for human consumption and meat products processing appears quite common throughout the world, relatively limited scientific information regarding the meat quality parameters of this pork type is available. The present study aimed at providing the technological quality characteristics and eating quality of CS meat, and comparing with those of commercial pork. Methods Longissimus thoracis et lumborum muscle samples of CS and finisher pigs (FP) at 24 h postmortem were collected and used for investigation of the meat quality traits (pH, color, shear force, cooking loss, water holding capacity), fatty acids, flavor compounds and sensory characteristics. Results The CS meat had significantly higher moisture content (p = 0.0312) and water holding capacity (p = 0.0213) together with lower cooking loss (p = 0.0366) compared to the FP meat. The CS meat also exhibited higher (p = 0.0409) contents of unsaturated fatty acids, especially polyunsaturated fatty acids (PUFA, p = 0.0213) and more desirable PUFA/total saturated fatty acids ratio (p = 0.0438) compared to the FP meat. A total of 56 flavor compounds were identified, amongst the amount of 16 compounds differed significantly between the two pork groups. Most of the PUFA-derived flavor compounds (e.g., hexanal, benzaldehyde, and hydrocarbons) showed higher amounts in the CS meat. While, 3-(methylthio)-propanal and 4-methylthiazole associated with pleasant aromas (meaty and roast odor notes) were only found in the FP meat. Furthermore, no differences were reported by panelists for flavor, juiciness, tenderness, and acceptability scores between the two pork groups studied. Conclusion The sow meat exhibited better technological quality and its eating quality could be comparable to the commercial pork. This study provides meat processors and traders with valuably scientific information which may help to improve the utilization and consumption level of sow meat.
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Affiliation(s)
- Van Ba Hoa
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Soo-Hyun Cho
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Pil-Nam Seong
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Sun-Moon Kang
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Yun-Seok Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | | | - Yong-Min Choi
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
| | - Jin-Hyoung Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Kuk-Hwan Seol
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
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Hoa VB, Seong PN, Cho SH, Kang SM, Kim YS, Moon SS, Choi YM, Kim JH, Seol KH. Quality characteristics and flavor compounds of pork meat as a function of carcass quality grade. Asian-Australas J Anim Sci 2019; 32:1448-1457. [PMID: 31010986 PMCID: PMC6722317 DOI: 10.5713/ajas.18.0965] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/11/2019] [Accepted: 02/26/2019] [Indexed: 02/03/2023]
Abstract
Objective The present work aimed at evaluating the effects of carcass quality grade on the quality characteristics of pork meat according to Korean carcass quality grade system. Method Pork carcasses with varying in quality grades (QG): 1+ (QG1+, n=10), 1 (QG1, n=10) and 2 (QG2, n=10), were used to evaluate the relationship between carcass quality grade and meat quality. The meat quality traits, fatty acid profiles, flavor compounds and sensory qualities were measured on the longissimus dorsi muscle samples of these carcasses. Results Pork meat of higher quality grade (GQ1+) presented significantly higher fat content (5.43%), C18:2n-6 level (19.03%) and total unsaturated fatty acids (UFA) content (62.72%). Also, the QG1+ meat was significantly higher in levels of classes of flavor compounds such as aldehydes, alcohols and hydrocarbons in comparison to those of the meat samples from the lower GQ groups. The sensory evaluation results (flavor, juiciness, tenderness and acceptability scores) of QG1+ meat was significantly higher than the QG1 and QG2 meats. The pork with lower QG (i.e., QG2) was found positively correlated to redness (r=0.987), C18:1n-9 level (r=1.000) but negatively correlated to the fat content (r=-0.949), and flavor (r=-0.870), juiciness (r=-0.861), tenderness (r=-0.862) and acceptability (r=-0.815) scores. Conclusion The pork with higher quality grade had higher fat content, total unsaturated fatty acids and better eating quality, thus producing pork with higher quality grades should be considered in order to satisfy the consumer's expectation.
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Affiliation(s)
- Van Ba Hoa
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Pil-Nam Seong
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Soo-Hyun Cho
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Sun-Moon Kang
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Yun-Seok Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | | | - Yong-Min Choi
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
| | - Jin-Hyoung Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Kuk-Hwang Seol
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
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Abstract
AIMS Children commonly sustain heat contact type burn injuries from sun heated surfaces during the summer months in hot, sunny climates. The aim of this study was to review the causes and outcomes in a series of heat contact type burns sustained by children who touched hot sun heated surfaces. METHODS A retrospective chart review was performed to identify all children who sustained burn injuries due to naturally heated surfaces and were treated between January 2012 and December 2017 at Children's Hospital Colorado. Demographics of the subjects and clinical data regarding their burn injuries were collected. RESULTS A total of 58 children were identified over the study period, involving 118 burn wounds. The median age was 17 months (interquartile range = 14-23), and 33 were male (57%). Mean total body surface area (TBSA) was 1.4% (standard deviation = 1). A foot was the most commonly involved area, affecting 36 subjects (62%). The most common causes of these burn injuries were metal thresholds (n = 7, 12%) and metal covers or lids (n = 5, 9%) outside the home. The depth of the burn injury was partial thickness in 57 children (98%). The mean time to heal was 12 ± 6 days, and the majority of injuries occurred in June (n = 28, 48%). CONCLUSION Heat contact type burn injuries from sun heated surfaces commonly affect children ⩽2 years of age during the summer months, and the majority of these injuries occur around the home environment. They are preventable injuries, and this information should be used for prevention and education materials for parents and healthcare providers, who reside in hot, sunny climates.
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Affiliation(s)
- Y M Choi
- Rutgers New Jersey Medical School, Newark, NJ, USA
- Division of Pediatric Surgery, Children's Hospital Colorado, 13123 E. 16th Avenue B245, Aurora, CO 80045, USA
| | - T Chopra
- Division of Pediatric Surgery, Children's Hospital Colorado, Aurora, CO, USA
| | - D Smith
- Division of Pediatric Surgery, Children's Hospital Colorado, Aurora, CO, USA
| | - S Moulton
- Division of Pediatric Surgery, Children's Hospital Colorado, Aurora, CO, USA
- School of Medicine, University of Colorado, Aurora, CO, USA
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Lee B, Yoon S, Choi YM. Comparison of marbling fleck characteristics between beef marbling grades and its effect on sensory quality characteristics in high-marbled Hanwoo steer. Meat Sci 2019; 152:109-115. [PMID: 30844620 DOI: 10.1016/j.meatsci.2019.02.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/19/2019] [Accepted: 02/26/2019] [Indexed: 12/13/2022]
Abstract
The aim of this study was to compare the intramuscular fat (IMF) content and marbling fleck characteristics measured by computerized image analysis among the eight grades of Korean beef marbling standard (BMS). Additionally, this study examined the effects of the marbling fleck characteristics on objective tenderness parameters and sensory quality characteristics in high-marbled Hanwoo steers (BMS grades 7 to 9). Marked differences were observed in marbling fleck characteristics among the BMS grades (P < .05), whereas the coarseness was similar in high-marbled beef (P > .05). Due to a greater extent of coarse marbling fleck, coarse marbled steaks from high-marbled cattle were assigned higher scores of tenderness attributes, including softness, initial tenderness, and chewiness, as well as mouth coating, but were assigned lower acceptability ratings for IMF content and overall impression compared to fine marbled steaks (P < .05). Taken together, considering the marbling fleck traits can be an effective tool for improving the accuracy of beef grading systems.
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Affiliation(s)
- B Lee
- Department of Animal Sciences, Kyungpook National University, South Korea
| | - S Yoon
- Korea Institute for Animal Products Quality Evaluation, South Korea
| | - Y M Choi
- Department of Animal Sciences, Kyungpook National University, South Korea.
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11
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Van Ba H, Seo HW, Seong PN, Kang SM, Cho SH, Kim YS, Park BY, Moon SS, Kang SJ, Choi YM, Kim JH. The fates of microbial populations on pig carcasses during slaughtering process, on retail cuts after slaughter, and intervention efficiency of lactic acid spraying. Int J Food Microbiol 2019; 294:10-17. [PMID: 30711888 DOI: 10.1016/j.ijfoodmicro.2019.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 09/13/2018] [Revised: 12/27/2018] [Accepted: 01/24/2019] [Indexed: 11/26/2022]
Abstract
This study was conducted to detect and identify microbial populations on pig carcasses at different slaughtering stages and on retail pork cuts at 24 h after slaughter as well as to evaluate the intervention efficiency of sprays containing different concentrations (2% and 4%) of lactic acid. The sprays were applied to the carcass surfaces at the end of the slaughter line. Microbial samples were collected from carcass surfaces after bleeding and after eviscerating, and from retail cuts at 24 h after chilling/spraying. The detected microorganisms were identified through using a Microflex identification instrument and 16S rRNA gene sequencing. The diversity of the bacterial genera; Staphylococcus, Salmonella, Shigella, Enterococci, Escherichia, Acinetobacter and Corynebacterium spp. showed counts ranging from 2.70 to 4.91 log10 cfu/100 cm2 on the carcasses during slaughter. Most of these genera were also detected on the carcasses after 24 h of chilling. Three species (Staphylococcus hyicus, Acinetobacter albensis, and Corynebacterium xerosis) were also found on the retail cuts of non-sprayed carcasses but not on those of the sprayed groups. Significantly greater reductions in all bacterial species were observed on the carcasses and retail cuts that were sprayed with lactic acid, particularly at the 4% level. Thus, spraying with 4% lactic acid may be an effective intervention for controlling bacterial contamination on pig carcasses to improve the microbiological safety of pork meat.
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Affiliation(s)
- Hoa Van Ba
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Hyun-Woo Seo
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Pil-Nam Seong
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Sun-Moon Kang
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Soo-Huyn Cho
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Yoon-Seok Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Beom-Young Park
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Sung-Sil Moon
- Sunjin Meat Research Center, Ansung 17532, Republic of Korea
| | - Se-Ju Kang
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Republic of Korea
| | - Yong-Min Choi
- National Institute of Agricultural Sciences, RDA, Wanju 55365, Republic of Korea
| | - Jin-Hyoung Kim
- National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea.
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12
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Kim SJ, Park GY, Choi YM, Sohn DG, Kang SR, Im S. Bulbar Myasthenia Gravis Superimposed in a Medullary Infarction Diagnosed by a Fiberoptic Endoscopic Evaluation of Swallowing With Simultaneous Tensilon Application. Ann Rehabil Med 2018; 41:1082-1087. [PMID: 29354586 PMCID: PMC5773429 DOI: 10.5535/arm.2017.41.6.1082] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/08/2017] [Indexed: 11/05/2022] Open
Abstract
In the elderly, myasthenia gravis (MG) can present with bulbar symptoms, which can be clinically difficult to diagnose from other neurological comorbid conditions. We describe a case of a 75-year-old man who had been previously diagnosed with dysphagia associated with medullary infarction but exhibited aggravation of the dysphagia later on due to a superimposed development of bulbar MG. After recovering from his initial swallowing difficulties, the patient suddenly developed ptosis, drooling, and generalized weakness with aggravated dysphagia. Two follow-up brain magnetic resonance imaging (MRI) scans displayed no new brain lesions. Antibodies to acetylcholine receptor and muscle-specific kinase were negative. Subsequent electrodiagnosis with repetitive nerve stimulation tests revealed unremarkable findings. A diagnosis of bulbar MG could only be established after fiberoptic endoscopic evaluation of swallowing (FEES) with simultaneous Tensilon application. After application of intravenous pyridostigmine, significant improvement in dysphagia and ptosis were observed both clinically and according to the FEES.
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Affiliation(s)
- Sung-Jun Kim
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Geun-Young Park
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-Min Choi
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dong-Gyun Sohn
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sae-Rom Kang
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sun Im
- Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
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13
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Chae CS, Park GY, Choi YM, Jung S, Kim S, Sohn D, Im S. Rapid, Objective and Non-invasive Diagnosis of Sudomotor Dysfunction in Patients With Lower Extremity Dysesthesia: A Cross-Sectional Study. Ann Rehabil Med 2017; 41:1028-1038. [PMID: 29354580 PMCID: PMC5773423 DOI: 10.5535/arm.2017.41.6.1028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 05/29/2017] [Indexed: 01/10/2023] Open
Abstract
Objective To determine whether patients with lumbosacral (LS) radiculopathy and peripheral polyneuropathy (PPNP) exhibit sudomotor abnormalities and whether SUDOSCAN (Impeto Medical, Paris, France) can complement nerve conduction study (NCS) and electromyography (EMG). Methods Outpatients with lower extremity dysesthesia underwent electrophysiologic studies and SUDOSCAN. They were classified as normal (group A), LS radiculopathy (group B), or PPNP (group C). Pain severity was measured by the Michigan Neuropathy Screening Instrument (MNSI) and visual analogue scale (VAS). Demographic features, electrochemical skin conductance (ESC) values on hands and feet, and SUDOSCAN-risk scores were analyzed. Results There were no statistical differences in MNSI and VAS among the three groups. Feet-ESC and hands-ESC values in group C were lower than group A and B. SUDOSCAN-risk score in group B and C was higher than group A. With a cut-off at 48 microSiemens of feet-ESC, PPNP was detected with 57.1% sensitivity and 94.2% specificity (area under the curve [AUC]=0.780; 95% confidence interval [CI], 0646-0.915). With a SUDOSCAN-risk score cut-off at 29%, NCS and EMG abnormalities related to LS radiculopathy and PPNP were detected with 64.1% sensitivity and 84.2% specificity (AUC=0.750; 95% CI, 0.674-0.886). Conclusion SUDOSCAN can discriminate outpatients with abnormal electrophysiological findings and sudomotor dysfunction. This technology may be a complementary tool to NCS and EMG in outpatients with lower extremity dysesthesia.
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Affiliation(s)
- Choong Sik Chae
- Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Geun Young Park
- Department of Rehabilitation Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Yong-Min Choi
- Department of Rehabilitation Medicine, Dongsan Medical Center, School of Medicine, Keimyung University, Daegu, Korea
| | - Sangeun Jung
- Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sungjun Kim
- Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Donggyun Sohn
- Department of Rehabilitation Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Sun Im
- Department of Rehabilitation Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
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14
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Choi YM, Park GY, Yoo Y, Sohn D, Jang Y, Im S. Reduced Diaphragm Excursion During Reflexive Citric Acid Cough Test in Subjects With Subacute Stroke. Respir Care 2017; 62:1571-1581. [DOI: 10.4187/respcare.05488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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15
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Kim JJ, Kim D, Yim JY, Kang JH, Han KH, Kim SM, Hwang KR, Ku SY, Suh CS, Kim SH, Choi YM. Polycystic ovary syndrome with hyperandrogenism as a risk factor for non-obese non-alcoholic fatty liver disease. Aliment Pharmacol Ther 2017; 45:1403-1412. [PMID: 28370150 DOI: 10.1111/apt.14058] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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: 12/02/2016] [Revised: 12/13/2016] [Accepted: 03/04/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is known to be associated with polycystic ovary syndrome (PCOS). However, most studies investigated the prevalence of NAFLD in obese PCOS patients. AIM To compare the prevalence of non-obese NAFLD in women with or without PCOS, and to assess an independent association between PCOS and NAFLD in a non-obese Asian cohort. METHODS This was a case-control study using a prospective PCOS cohort. After subjects with other potential causes of chronic liver disease were excluded, 275 non-obese women with PCOS and 892 non-obese controls were enrolled. NAFLD was determined by hepatic ultrasonography. Main outcomes were the prevalence of NAFLD on hepatic ultrasonography between non-obese women with or without PCOS, and an independent association between non-obese NAFLD and PCOS. RESULTS Non-obese women with PCOS had a significantly higher prevalence of NAFLD than those without PCOS (5.5% vs. 2.8%, P = 0.027). PCOS was associated with non-obese NAFLD (odds ratio: 2.62, 95% confidence intervals: 1.25-5.48) after adjustment for age and body mass index (BMI). In women with PCOS, the level of androgenicity represented by free testosterone or free androgen index was associated with NAFLD after adjustment for age, BMI, lipid profile, insulin resistance or glycaemic status. CONCLUSIONS Non-obese NAFLD is more prevalent in women with polycystic ovary syndrome than in those without. In non-obese patients with polycystic ovary syndrome, hyperandrogenemia may be an independent risk factor for non-obese NAFLD.
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Affiliation(s)
- J J Kim
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
| | - D Kim
- Department of Internal Medicine, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, USA
| | - J Y Yim
- Department of Internal Medicine, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - J H Kang
- Department of Radiology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - K H Han
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - S M Kim
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - K R Hwang
- Department of Obstetrics and Gynecology, Seoul Municipal Boramae Hospital, Seoul, Korea
| | - S Y Ku
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - C S Suh
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - S H Kim
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Y M Choi
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
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16
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Choi YM, Kim KB, Lee JH, Chun YK, An IS, An S, Bae S. DBC2/RhoBTB2 functions as a tumor suppressor protein via Musashi-2 ubiquitination in breast cancer. Oncogene 2016; 36:2802-2812. [PMID: 27941885 PMCID: PMC5442418 DOI: 10.1038/onc.2016.441] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 03/31/2016] [Revised: 09/10/2016] [Accepted: 10/20/2016] [Indexed: 12/16/2022]
Abstract
The gene encoding ‘deleted in breast cancer 2' (DBC2), also referred to as RHOBTB2 (Rho-related BTB domain-containing protein 2), is classified as a tumor suppressor gene. DBC2 is a substrate-specific adaptor protein for a novel class of Cullin-3 (CUL3)-based E3 ubiquitin ligases; however, it is unclear if the substrate adaptor function of DBC2 is required for its tumor suppressor activity. Furthermore, the key substrates of DBC2-mediated ubiquitination have yet to be identified. In the present study, we established a genome-wide human cDNA library-based in vitro ubiquitination target screening assay and identified Musashi-2 (MSI2) as a novel ubiquitination target protein of DBC2. MSI2 directly interacted with DBC2, and this interaction promoted MSI2 polyubiquitination and proteasomal degradation in breast cancer cells. Overexpression and knockdown experiments demonstrated that DBC2 suppressed MSI2-associated oncogenic functions and induced apoptosis. Immunohistochemistry analysis of a breast cancer tissue microarray revealed that DBC2 and MSI2 protein levels are inversely correlated in both normal breast tissues and breast cancer tissues. Taken together, these findings provide evidence that DBC2 suppresses tumorigenesis in breast cancer by ubiquitinating MSI2.
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Affiliation(s)
- Y M Choi
- KU Center for Integrated Science and Technology, Konkuk University, Seoul, South Korea.,Korea Institute of Dermatological Sciences, 2nd Enterprise Research Building, Chungcheongbuk-do, South Korea
| | - K B Kim
- Korea Institute of Dermatological Sciences, 2nd Enterprise Research Building, Chungcheongbuk-do, South Korea
| | - J H Lee
- Laboratory of Molecular Oncology, Cheil General Hospital and Women's Healthcare Center, Dankook University, College of Medicine, Seoul, South Korea
| | - Y K Chun
- Department of Pathology, Cheil General Hospital and Women's Healthcare Center, Dankook University, College of Medicine, Seoul, South Korea
| | - I S An
- Korea Institute of Dermatological Sciences, 2nd Enterprise Research Building, Chungcheongbuk-do, South Korea
| | - S An
- KU Center for Integrated Science and Technology, Konkuk University, Seoul, South Korea
| | - S Bae
- KU Center for Integrated Science and Technology, Konkuk University, Seoul, South Korea
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17
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Lee JY, Choi YM. Disturbing Factors of the Korean's Housing Conditions for Physically Impaired Individuals. Arch Phys Med Rehabil 2016. [DOI: 10.1016/j.apmr.2016.09.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Choi YM, Adelzadeh L, Wu JJ. Non-tuberculous mycobacterial infections in psoriasis patients treated with biologics. J Eur Acad Dermatol Venereol 2016; 30:e99-e101. [PMID: 26388307 DOI: 10.1111/jdv.13343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Y M Choi
- Department of Dermatology, Kaiser Permanente Medical Center, Los Angeles, CA, USA
| | - L Adelzadeh
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - J J Wu
- Department of Dermatology, Kaiser Permanente Medical Center, Los Angeles, CA, USA.
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19
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Choi YM, Chae SH, Lee JY. The Differences of Postural Disorders Between Supratentorial and Infratentorial Ischemic Strokes. Arch Phys Med Rehabil 2016. [DOI: 10.1016/j.apmr.2016.08.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Choi YM, Hwang S, Lee K. Comparison of Muscle Fiber and Meat Quality Characteristics in Different Japanese Quail Lines. Asian-Australas J Anim Sci 2016; 29:1331-7. [PMID: 27383804 PMCID: PMC5003995 DOI: 10.5713/ajas.16.0329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/03/2016] [Accepted: 06/16/2016] [Indexed: 12/29/2022]
Abstract
The aim of this study was to compare the growth performance, fiber characteristics of the pectoralis major muscle, and meat quality characteristics in the heavy weight (HW) and random bred control (RBC) quail lines and genders. The HW male exhibited more than two times greater body (245.7 vs 96.1 g, p<0.05) and pectoralis major muscle (PMW; 37.1 vs 11.1 g, p<0.05) weights compared to the RBC female. This growth performance in the HW line was associated with a greater muscle fiber area (1,502 vs 663.0 μm2, p<0.001) compared to the RBC line. Greater muscle mass of the HW male was accompanied by a higher percentage of type IIB fiber compared to the HW female (64.0% vs 51.0%, p<0.05). However, muscle fiber hyperplasia (increase in fiber number) has had a somewhat limited effect on PMW between the two lines. On the other hand, the HW line harboring a higher proportion of type IIB fiber showed rapid pH decline at the early postmortem period (6.23 vs 6.41, p<0.05) and lighter meat surface (53.5 vs 47.3, p<0.05) compared to the RBC line harboring a lower proportion of type IIB fiber. There were no significant differences observed in the measurement of water-holding capacity including drip loss (2.74% vs 3.07%, p>0.05) and cooking loss (21.9% vs 20.4%, p>0.05) between the HW and RBC lines. Therefore, the HW quail line developed by selection from the RBC quail, was slightly different in the meat quality characteristics compared to the RBC line, and a marked difference was found in growth performance between the two quail lines.
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Affiliation(s)
- Y M Choi
- Department of Animal Sciences, Kyungpook National University, Sangju 37224, Korea.,Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - S Hwang
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA.,Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - K Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
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21
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Kim YJ, Ku SY, Kim YY, Suh CS, Kim SH, Choi YM. MicroRNA Profile of Granulosa Cells after Ovarian Stimulation Differs According to Maturity of Retrieved Oocytes. Geburtshilfe Frauenheilkd 2016; 76:704-708. [PMID: 27365541 DOI: 10.1055/s-0041-111173] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background: Recent animal studies demonstrated that regulating the microRNA (miRNA) in granulosa cells (GCs) modulates the meiotic competence of oocytes. However, the difference in expression profiles of miRNAs in human GCs according to the maturity of the oocyte still remains to be elucidated. Objective: This observational study investigated whether the miRNA profile of human GCs differs according to the maturity of the retrieved oocyte after controlled ovarian stimulation for in vitro fertilization (IVF). Methods: Ten women who underwent ovarian stimulation cycles with GnRH agonist long protocols were recruited. The follicular fluid (FF) from dominant follicles was individually aspirated at oocyte retrieval. Oocytes were divided into two groups according to oocyte maturity ("mature group" vs. "immature group"). GCs were collected from the FF and miRNA was analyzed using real-time PCR. Results: Mean number of MII oocytes in the mature group was 1.6 ± 0.9 with none in the immature group (p = 0.008). Mean number of MI oocytes was 5.6 ± 2.1 in the mature group and 1.0 ± 0.0 in the immature group (p = 0.008). The total number of retrieved oocytes was 8.8 ± 1.9 in the mature group and 2.0 ± 1.2 in the immature group (p = 0.008). The GCs of the mature group showed a significantly lower expression of hsa-let-7b compared to the GCs of the immature group (p < 0.001). Conclusion: Taken together, the miRNA expression profiles of human GCs obtained from dominant follicles are associated with maturity of the adjacent oocyte and may be useful as a prognosticator of IVF outcome.
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Affiliation(s)
- Y J Kim
- Department of Obstetrics and Gynecology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, South Korea
| | - S-Y Ku
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Y Y Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - C S Suh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - S H Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
| | - Y M Choi
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea
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22
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Abstract
Introduction: Several studies have found anesthetic agents including propofol in ovarian follicular fluid. However, little is known about the effect of anesthetic agents on ovarian function. We aimed to investigate whether there were differences in the postoperative levels of sex hormones when propofol was used as the anesthetic agent. Methods: A retrospective review was done of 80 patients who underwent ovarian surgery, with 72 infertile women serving as controls. Patients were included in the study if their serum estradiol (E2) and follicle stimulating hormone (FSH) levels were measured during their first postoperative menstrual cycle. Results: Patients were grouped according to the use or non-use of propofol as follows: propofol group (n = 39) and non-propofol group (n = 41). The control group did not undergo surgery. Postoperative E2 levels did not differ between the three groups, but FSH levels were significantly higher in the patients who had undergone surgery compared to controls (p < 0.05). Post-hoc analysis of E2 and FSH levels in the propofol and non-propofol groups did not show any significant differences. Conclusions: The use of propofol did not result in any differences compared to other anesthetic agents in terms of postoperative sex hormone levels after gynecologic surgery. The type of anesthetic agent does not seem to affect the postoperative levels of female sex hormones.
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Affiliation(s)
- H Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S-Y Ku
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H C Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C S Suh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S H Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y M Choi
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
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23
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Choi YM, Chen PR, Shin S, Zhang J, Hwang S, Lee K. Mild heat stress enhances differentiation and proliferation of Japanese quail myoblasts and enhances slow muscle fiber characteristics. Poult Sci 2016; 95:1912-7. [PMID: 27038421 DOI: 10.3382/ps/pew116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2016] [Indexed: 12/20/2022] Open
Abstract
The objective of this study was to investigate the effect of mild heat stress on muscle fiber hyperplastic and hypertrophic growth in quail primary myogenic cells to better understand the mechanisms leading to increased skeletal muscle development in avian embryos incubated at a higher temperature. Compared to control cultures maintained at 37°C, incubation at 39°C enhanced myotube length (P < 0.01) and diameter (P < 0.001) at 3 days after differentiation (D3). This enlargement of the myotubes incubated at 39°C can be explained by differences in the fusion index (56.7 vs. 46.2%, P < 0.05) and nuclei number per myotube (18.1 vs. 10.8, P < 0.001) compared to the control cells at D3. Additionally, a higher density of myotubes at D3 in cultures exposed to a higher temperature were related to higher levels of Pax-7 (P < 0.05) compared to the control cells incubated continuously at 37°C. These results indicated a higher proliferative capacity in cells exposed to mild heat stress compared to the control cells. On the other hand, mild heat stress enhanced protein levels of slow myosin heavy chain isoform (P < 0.01) and cytochrome c oxidase subunit IV (P < 0.01) compared to the control cells at D3. These discrepancies in protein expression indicated maintenance of slow muscle fiber type characteristics in myotubes incubated at 39°C. Our results suggest that mild heat stress plays a significant role in myogenic mechanisms related to muscle mass and development.
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Affiliation(s)
- Y M Choi
- Department of Animal Sciences, Kyungpook National University, Sangju 37224, South Korea Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
| | - P R Chen
- Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
| | - S Shin
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, South Korea Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
| | - J Zhang
- Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
| | - S Hwang
- Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju-gun, Jeonbuk 565-851, Republic of Korea Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
| | - K Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210
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24
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Yoo C, Lin S, Na K, Yoo EJ, Choi YM, Kim YY. Habitual sleeping position and asymmetric structural and functional loss in patients with open angle glaucoma. Acta Ophthalmol 2015; 93:e593-5. [PMID: 25824660 DOI: 10.1111/aos.12686] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chungkwon Yoo
- Department of Ophthalmology; Korea University College of Medicine; Seoul Korea
| | - Shan Lin
- Department of Ophthalmology; University of California, San Francisco; San Francisco California USA
| | - Kunhoo Na
- Department of Ophthalmology; Korea University College of Medicine; Seoul Korea
| | - Eun-Joo Yoo
- Department of Ophthalmology; Korea University College of Medicine; Seoul Korea
| | - Yong-Min Choi
- Department of Ophthalmology; Korea University College of Medicine; Seoul Korea
| | - Yong Yeon Kim
- Department of Ophthalmology; Korea University College of Medicine; Seoul Korea
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Choi YM, Kim HK, Shim W, Anwar MA, Kwon JW, Kwon HK, Kim HJ, Jeong H, Kim HM, Hwang D, Kim HS, Choi S. Mechanism of Cisplatin-Induced Cytotoxicity Is Correlated to Impaired Metabolism Due to Mitochondrial ROS Generation. PLoS One 2015; 10:e0135083. [PMID: 26247588 PMCID: PMC4527592 DOI: 10.1371/journal.pone.0135083] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 07/16/2015] [Indexed: 12/18/2022] Open
Abstract
The chemotherapeutic use of cisplatin is limited by its severe side effects. In this study, by conducting different omics data analyses, we demonstrated that cisplatin induces cell death in a proximal tubular cell line by suppressing glycolysis- and tricarboxylic acid (TCA)/mitochondria-related genes. Furthermore, analysis of the urine from cisplatin-treated rats revealed the lower expression levels of enzymes involved in glycolysis, TCA cycle, and genes related to mitochondrial stability and confirmed the cisplatin-related metabolic abnormalities. Additionally, an increase in the level of p53, which directly inhibits glycolysis, has been observed. Inhibition of p53 restored glycolysis and significantly reduced the rate of cell death at 24 h and 48 h due to p53 inhibition. The foremost reason of cisplatin-related cytotoxicity has been correlated to the generation of mitochondrial reactive oxygen species (ROS) that influence multiple pathways. Abnormalities in these pathways resulted in the collapse of mitochondrial energy production, which in turn sensitized the cells to death. The quenching of ROS led to the amelioration of the affected pathways. Considering these observations, it can be concluded that there is a significant correlation between cisplatin and metabolic dysfunctions involving mROS as the major player.
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Affiliation(s)
- Yong-Min Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Han-Kyul Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Wooyoung Shim
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Muhammad Ayaz Anwar
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Ji-Woong Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
| | - Hyung Joong Kim
- Division of Energy Systems Research, Ajou University, Suwon, 443–749, Korea
| | - Hyobin Jeong
- School of Interdisciplinary Bioscience and Bioengineering, POSTECH, Pohang, 790–784, Korea
| | - Hwan Myung Kim
- Division of Energy Systems Research, Ajou University, Suwon, 443–749, Korea
| | - Daehee Hwang
- School of Interdisciplinary Bioscience and Bioengineering, POSTECH, Pohang, 790–784, Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, 440–746, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, 443–749, Korea
- * E-mail:
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Kim DH, Kim SK, Park SK, Yoo KY, Hwang TJ, Choi YM. Korea hemophilia foundation registry trends 1991-2012: patient registry, demographics, health services utilization. Haemophilia 2015. [PMID: 26212599 DOI: 10.1111/hae.12744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D H Kim
- Department of Pediatrics, College of Medicine, Inha University, Incheon, Korea
| | - S K Kim
- Department of Pediatrics, College of Medicine, Inha University, Incheon, Korea
| | - S K Park
- College of Medicine, Ulsan University, Ulsan, Korea
| | - K Y Yoo
- Korea Hemophilia Foundation, Seoul, Korea
| | - T J Hwang
- Korea Hemophilia Foundation, Seoul, Korea
| | - Y M Choi
- Korea Hemophilia Foundation, Seoul, Korea
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Choe JH, Choi MH, Ryu YC, Go GW, Choi YM, Lee SH, Lim KS, Lee EA, Kang JH, Hong KC, Kim BC. Estimation of pork quality traits using exsanguination blood and postmortem muscle metabolites. Asian-Australas J Anim Sci 2015; 28:862-9. [PMID: 25925063 PMCID: PMC4412983 DOI: 10.5713/ajas.14.0768] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/17/2014] [Accepted: 12/09/2014] [Indexed: 11/27/2022]
Abstract
The current study was designed to estimate the pork quality traits using metabolites from exsanguination blood and postmortem muscle simultaneously under the Korean standard pre- and post-slaughter conditions. A total of 111 Yorkshire (pure breed and castrated male) pigs were evaluated under the Korean standard conditions. Measurements were taken of the levels of blood glucose and lactate at exsanguination, and muscle glycogen and lactate content at 45 min and 24 h postmortem. Certain pork quality traits were also evaluated. Correlation analysis and multiple regression analysis including stepwise regression were performed. Exsanguination blood glucose and lactate levels were positively correlated with each other, negatively related to postmortem muscle glycogen content and positively associated with postmortem muscle lactate content. A rapid and extended postmortem glycolysis was associated with high levels of blood glucose and lactate, with high muscle lactate content, and with low muscle glycogen content during postmortem. In addition, these were also correlated with paler meat color and reduced water holding capacity. The results of multiple regression analyses also showed that metabolites in exsanguination blood and postmortem muscle explained variations in pork quality traits. Especially, levels of blood glucose and lactate and content of muscle glycogen at early postmortem were significantly associated with an elevated early glycolytic rate. Furthermore, muscle lactate content at 24 h postmortem alone accounted for a considerable portion of the variation in pork quality traits. Based on these results, the current study confirmed that the main factor influencing pork quality traits is the ultimate lactate content in muscle via postmortem glycolysis, and that levels of blood glucose and lactate at exsanguination and contents of muscle glycogen and lactate at postmortem can explain a large portion of the variation in pork quality even under the standard slaughter conditions.
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Affiliation(s)
- J H Choe
- Department of Food Bioscience and Technology, Korea University, Seoul 136-701, Korea
| | - M H Choi
- Department of Food Bioscience and Technology, Korea University, Seoul 136-701, Korea
| | - Y C Ryu
- College of Applied Life Sciences, Sustainable Agriculture Research Institute, Jeju National University, Jeju 690-756, Korea
| | - G W Go
- Department of Food and Nutrition, Kookmin University, Seoul 136-702, Korea
| | - Y M Choi
- Department of Animal Sciences and Biotechnology, KyungPook National University, Sangju 742-711, Korea
| | - S H Lee
- Department of Nutritional Science and Food Management, Ewha University, Seoul 120-750, Korea
| | - K S Lim
- Division of Biotechnology, Korea University, Seoul 136-701, Korea
| | - E A Lee
- Division of Biotechnology, Korea University, Seoul 136-701, Korea
| | - J H Kang
- Division of Biotechnology, Korea University, Seoul 136-701, Korea
| | - K C Hong
- Division of Biotechnology, Korea University, Seoul 136-701, Korea
| | - B C Kim
- Department of Food Bioscience and Technology, Korea University, Seoul 136-701, Korea
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Yoo KY, Kim SK, Kwon SS, Park SK, Yoon HJ, Lee KS, Hwang TJ, Choi YM, Lee SY. Life expectancy of Korean haemophiliacs, 1991-2012. Haemophilia 2015; 20:e356-8. [PMID: 24948408 DOI: 10.1111/hae.12475] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2014] [Indexed: 11/27/2022]
Affiliation(s)
- K Y Yoo
- Korea Hemophilia Foundation, Seoul, Korea
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Kim SH, Suh YW, Choi YM, Han JY, Nam GT, You EJ, Cho YA. Effect of watching 3-dimensional television on refractive error in children. Korean J Ophthalmol 2015; 29:53-7. [PMID: 25646061 PMCID: PMC4309869 DOI: 10.3341/kjo.2015.29.1.53] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 03/30/2014] [Accepted: 06/09/2014] [Indexed: 11/23/2022] Open
Abstract
Purpose To investigate the effect of watching 3-dimensional (3D) television (TV) on refractive error in children. Methods Sixty healthy volunteers, aged 6 to 12 years, without any ocular abnormalities other than refractive error were recruited for this study. They watched 3D TV for 50 minutes at a viewing distance of 2.8 meters. The image disparity of the 3D contents was from -1 to 1 degree. Refractive errors were measured both before and immediately after watching TV and were rechecked after a 10-minute rest period. The refractive errors before and after watching TV were compared. The amount of refractive change was also compared between myopes and controls. The refractive error of the participants who showed a myopic shift immediately after watching TV were compared across each time point to assure that the myopic shift persisted after a 10-minute rest. Results The mean age of the participants was 9.23 ± 1.75 years. The baseline manifest refractive error was -1.70 ± 1.79 (-5.50 to +1.25) diopters. The refractive errors immediately after watching and after a 10-minute rest were -1.75 ± 1.85 and -1.69 ± 1.80 diopters, respectively, which were not different from the baseline values. Myopic participants (34 participants), whose spherical equivalent was worse than -0.75 diopters, also did not show any significant refractive change after watching 3D TV. A myopic shift was observed in 31 participants with a mean score of 0.29 ± 0.23 diopters, which resolved after a 10-minute rest. Conclusions Watching properly made 3D content on a 3D TV for 50 minutes with a 10-minute intermission at more than 2.8 meters of viewing distance did not affect the refractive error of children.
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Affiliation(s)
- Seung-Hyun Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Young-Woo Suh
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Yong-Min Choi
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Ji-Yoon Han
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Gi-Tae Nam
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Eun-Joo You
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
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Choi YM, Lee JY, Jung JH, Kim SH, Cho YA. Risk factors predicting the need for additional surgery in consecutive esotropia. J Pediatr Ophthalmol Strabismus 2013; 50:335-9. [PMID: 24024671 DOI: 10.3928/01913913-20130903-01] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 07/22/2013] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the risk factors predicting surgical treatment in consecutive esotropia occurring after surgery for intermittent exotropia. METHODS The clinical records of 52 patients with consecutive esotropia who underwent exotropia surgery were retrospectively reviewed. All patients demonstrated consecutive esotropia with diplopia or suppression for more than 1 month after surgery for exotropia. Patients were divided into two groups (the surgical group and nonsurgical group) depending on whether surgery was required for consecutive esotropia. Surgery for esotropia was performed only in patients with more than 10 prism diopters (PD) esodeviation that persisted for a minimum of 6 months, those who had suppression in 1 eye or diplopia, and those who could not achieve fine stereopsis. The nonsurgical treatment up to 6 months postoperatively was part-time patching and prism therapy in both groups. Patient characteristics were evaluated in the two groups. RESULTS The surgical group was composed of 17 patients and the nonsurgical group was composed of 35 patients. Age, gender, refractive error, best-corrected visual acuity, and postoperative overcorrection at 1 day were not significantly different in the two groups (P > .05). However, the distance strabismic angle at 1 month postoperatively was 2.5 ± 3.8 PD esodeviation (range: 14 PD esotropia to 4 PD exotropia) in the nonsurgical group and 5.4 ± 5.1 PD esodeviation (range: 20 PD esotropia to orthotropia) in the surgical group; these values were statistically significant (P < .05). CONCLUSIONS The clinically significant risk factor affecting the surgical decision for consecutive esotropia was a large esotropic angle at 1 month postoperatively in this study.
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Affiliation(s)
- Yong-Min Choi
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Jaeryung Oh
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Seong-Woo Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Kuhl Huh
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
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Choi YM, Kim SH, Kim SW, Cho YA. The Influence of Suppression on Axial Length Progression in Intermittent Exotropia. J Korean Ophthalmol Soc 2013. [DOI: 10.3341/jkos.2013.54.5.766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Yong-Min Choi
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Seung-Hyun Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Seong-Woo Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Yoonae A. Cho
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
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Choi YM, Kim SH. Comparison of clinical features between two different types of exotropia before 12 months of age based on stereopsis outcome. Ophthalmology 2012; 120:3-7. [PMID: 23031669 DOI: 10.1016/j.ophtha.2012.07.062] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 07/19/2012] [Accepted: 07/19/2012] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To compare the clinical outcomes and characteristics of 2 different types of early-onset exotropia on the basis of stereopsis outcome. DESIGN Retrospective case series. PARTICIPANTS A total of 24 patients with newly diagnosed exotropia before 12 months of age and at least 1 year of follow-up after surgery. METHODS The clinical records of all patients were reviewed. Patients were divided into 2 groups according to stereopsis. The presumable early-onset intermittent exotropia (EIE) group was composed of 6 patients (25%) who showed excellent stereopsis of ≥60 arc seconds. The primary infantile exotropia (PIE) group was composed of 18 patients (75%) who showed stereopsis of ≤100 arc seconds. We compared the preoperative and postoperative clinical features of the 2 groups. MAIN OUTCOME MEASURES The age at onset and visit, age at surgery, constancy before surgery, preoperative and postoperative angles of deviation, distant suppression, reoperation rate, and presence of dissociative vertical deviation (DVD) and inferior oblique overaction (IOOA). RESULTS The age at the stereopsis test was 6.8 years in the EIE group and 6.4 years in the PIE group (P=0.41). There was no statistical difference in the mean preoperative exodeviation (32.8 prism diopters [PD] in the EIE group vs. 34.7 PD in the PIE group, P=0.58) and postoperative deviation at the stereopsis test (1.0 PD in the EIE group vs. 2.0 PD in the PIE group, P=0.97). The reoperation rate was 33% in the EIE group and 27% in the PIE group (P=1.00). There was no statistical difference in constancy between the EIE and PIE groups (33% vs. 56%, respectively, P=0.64). However, DVD (61%) and IOOA (56%) were noted only in the PIE group (P=0.016, P=0.024, respectively), and distant suppression was noted only in the PIE group (61%, P=0.016). CONCLUSIONS The results indicate that excellent sensory outcome was observed in only 25% of patients with exotropia before 12 months of age, but motor outcome and reoperation rate were not different between the 2 types of exotropia. We observed DVD, IOOA, and distant suppression only in the PIE group. FINANCIAL DISCLOSURE(S) The author(s) have no proprietary or commercial interest in any materials discussed in this article.
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Affiliation(s)
- Yong-Min Choi
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
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Park EJ, Kwon HK, Choi YM, Shin HJ, Choi S. Doxorubicin induces cytotoxicity through upregulation of pERK-dependent ATF3. PLoS One 2012; 7:e44990. [PMID: 23028726 PMCID: PMC3441731 DOI: 10.1371/journal.pone.0044990] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2012] [Accepted: 08/15/2012] [Indexed: 01/16/2023] Open
Abstract
Although doxorubicin is commonly used in the treatment of many cancer types, its use in chemotherapy has been limited, largely because of its severe side effects, including cardiotoxicity and nephrotoxicity. In this study, we aimed to identify the mechanism of doxorubicin-induced cytotoxicity by using the human kidney proximal tubule cell line HK-2. Furthermore, we investigated the role of activating transcription factor 3 (ATF3) as a mediator of doxorubicin-induced cytotoxicity by using wild-type mouse embryonic fibroblasts (MEF) cells and ATF3 knockout (KO) cells. In HK-2 cells, doxorubicin decreased cell viability in a dose-dependent manner and induced an increase in cells in the sub G1 and G2/M phases at all doses. Doxorubicin treatment showed the following dose-dependent effects: increase in the secretion of tumor necrosis factor alpha; decrease in the expression of phosphorylated protein kinase A and Bcl-2; and increase in the expression of phosphorylated signal transducer and activator of transcription 3, phosphorylated extracellular signal-regulated kinase (ERK), and ATF3. Based on these results, we suggest that doxorubicin induces cytotoxicity through an ERK-dependent pathway, and ATF3 plays a pivotal role as a transcriptional regulator in this process.
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Affiliation(s)
- Eun-Jung Park
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Yong-Min Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hyeon-Jun Shin
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
- * E-mail:
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Choi YM, Jung KC, Choe JH, Kim BC. Effects of muscle cortisol concentration on muscle fiber characteristics, pork quality, and sensory quality of cooked pork. Meat Sci 2012; 91:490-8. [PMID: 22498136 DOI: 10.1016/j.meatsci.2012.03.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 01/18/2012] [Accepted: 03/07/2012] [Indexed: 11/26/2022]
Abstract
The effect of muscle cortisol concentration on muscle fiber characteristics and technological and sensory quality of pork was investigated. With the exception of the percentage of type IIA fibers, muscle fiber characteristics were not associated to cortisol levels. However, muscle cortisol concentration was positively associated with muscle pH(24h) (r = 0.23, P<0.05) and negatively associated with drip loss (r = -0.49, P<0.001), lightness (r = -0.24, P<0.05), shear force (r = -0.25, P<0.05), and texture profile analysis-hardness (r = -0.35, P<0.01). Additionally, the water-holding capacity of meat samples was affected by cortisol levels, with lower cortisol concentrations associated with less tender samples. These results indicate that the concentration of cortisol in the muscle is related with meat quality as well as the sensory quality of cooked pork.
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Affiliation(s)
- Y M Choi
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul, South Korea
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Park EJ, Kim SA, Choi YM, Kwon HK, Shim W, Lee G, Choi S. Capric acid inhibits NO production and STAT3 activation during LPS-induced osteoclastogenesis. PLoS One 2011; 6:e27739. [PMID: 22110749 PMCID: PMC3218024 DOI: 10.1371/journal.pone.0027739] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Accepted: 10/24/2011] [Indexed: 02/05/2023] Open
Abstract
Capric acid is a second medium-chain fatty acid, and recent studies have shown that fatty acids are associated with bone density and reduce bone turnover. In this study, we investigated the effects of capric acid on lipopolysaccharide (LPS)-induced osteoclastogenesis in RAW264.7 cells. After treatment with capric acid (1 mM), the number of tartrate resistant acid phosphatase (TRAP)-positive cells decreased significantly. Capric acid reduced LPS-induced TRAP expression, an osteoclast differentiation marker, without inhibiting cell viability. LPS strongly upregulated inducible nitric oxide synthase (iNOS) mRNA levels and nitric oxide (NO) production, whereas capric acid inhibited them. Furthermore, capric acid also inhibited monocyte chemoattractant protein-1 (MCP-1) mRNA expression. Subsequently, we investigated various intracellular signaling proteins, including nuclear factor-κB (NF-κB), c-Jun-N-terminal kinase (JNK), extracellular signal regulated kinase 1/2 (ERK1/2), and signal transducer and activator of transcription 1 (STAT1) and STAT3 associated with osteoclastogenesis. Capric acid had no effects on LPS-induced activation of the NF-κB, JNK, ERK1/2, and STAT1 pathways. However, capric acid inhibited LPS-induced phosphorylation of Ser727 in STAT3. Additionally, stattic (a STAT3 inhibitor) inhibited LPS-induced iNOS and MCP-1 gene expression. In conclusion, we demonstrated that capric acid inhibited LPS-induced osteoclastogenesis by suppressing NO production via the STAT3 pathway. These results suggest that capric acid has important therapeutic implications for treating bone diseases associated with excessive osteoclastogenesis.
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Affiliation(s)
- Eun-Jung Park
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Sun A. Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Yong-Min Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Wooyoung Shim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Gwang Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
- * E-mail:
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Lee SH, Choe JH, Choi YM, Jung KC, Rhee MS, Hong KC, Lee SK, Ryu YC, Kim BC. The influence of pork quality traits and muscle fiber characteristics on the eating quality of pork from various breeds. Meat Sci 2011; 90:284-91. [PMID: 21840135 DOI: 10.1016/j.meatsci.2011.07.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 07/11/2011] [Accepted: 07/15/2011] [Indexed: 11/16/2022]
Abstract
The purpose of this study was to compare parameters associated with pork quality, muscle fiber, and eating quality among various breeds, and to examine if differences in eating quality were associated to pork quality and muscle fiber characteristics. For carcass and pork quality, although there were significant differences among breeds, the values of parameters in all pigs were assigned a normal quality class, a likely outcome of the similarity in the area percentage of type I and IIB fibers. For eating quality, pork loins from Berkshire pigs were more tender and full of pork flavor than Landrace and Yorkshire pigs. Except juiciness and mouth coating, over 20% of the variability in the eating quality parameters can be explained by pork quality traits and muscle fiber characteristics using multiple regression analysis. Furthermore, differences in muscle pH(24h), cooking loss, shear force, and NPPC marbling score could explain a large proportion of variation in eating quality parameters associated with the texture of pork.
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Affiliation(s)
- S H Lee
- Division of Food Bioscience and Technology, Korea University, Seongbuk-Gu, Seoul 136-701, South Korea
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Choi YM, Choe JH, Cho DK, Kim BC. Practical use of surimi-like material made from porcine longissimus dorsi muscle for the production of low-fat pork patties. Meat Sci 2011; 90:292-6. [PMID: 21843917 DOI: 10.1016/j.meatsci.2011.07.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 07/11/2011] [Accepted: 07/16/2011] [Indexed: 10/18/2022]
Abstract
This study evaluates the effect of replacing fat with surimi-like material (SLM) made from the porcine longissimus dorsi muscle on the physicochemical and sensory characteristics of pork patties. Pork patties were produced with different levels of fat and SLM using a commercial method. Pork patties produced with 20% SLM had the lowest fat content (1.76%, P<0.001), and had a higher cooking yield (87.41 vs. 78.57%, P<0.05) and less shrinkage (4.01 vs. 9.02%, P<0.001) than patties produced with 20% back-fat (control). Moreover, patties produced with SLM exhibited more acceptable organoleptic characteristics, including tenderness (P<0.01) and overall acceptability (P<0.001), than full-fat control patties. These results indicated that SLM cannot only be used as a fat replacer, but that it also improves the physicochemical and sensory characteristics of low-fat pork patties.
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Affiliation(s)
- Y M Choi
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-713, South Korea
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Kim JJ, Choi YM, Hwang SS, Yoon SH, Lee GH, Chae SJ, Hwang KR, Moon SY. Association of the interferon-γ gene (CA)n repeat polymorphism with endometriosis. BJOG 2011; 118:1061-6. [PMID: 21477169 DOI: 10.1111/j.1471-0528.2011.02963.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate whether the interferon-γ (IFN-γ) gene (CA)(n) repeat polymorphism is associated with susceptibility to endometriosis. DESIGN Case-control study. SETTING University Department of Obstetrics and Gynaecology. POPULATION Women with (n = 622) and without (n = 442) endometriosis. METHODS Genotyping was performed by fluorescent polymerase chain reaction (PCR) and gene-scan analysis. MAIN OUTCOME MEASURES Genotype distribution and allele frequency of the dinucleotide (CA)(n) repeat polymorphism in the IFN-γ gene. RESULTS Seven alleles (12-18 repeats) of the IFN-γ gene (CA)(n) repeat polymorphism were found. In both patients with endometriosis and controls the most common allele was composed of 13 repeats, followed by an allele of 15 repeats, and then by an allele of 12 repeats. Patients with endometriosis had a significantly higher incidence of genotypes with alleles composed of fewer repeats (12-13 repeats), compared with the controls (92.0 versus 84.4%, respectively, P < 001). CONCLUSIONS Our results suggest that the (CA)(n) repeat polymorphism in the IFN-γ gene may be associated with a risk of endometriosis in the South Korean population.
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Affiliation(s)
- J J Kim
- Department of Obstetrics and Gynaecology, Seoul National University College of Medicine, Seoul, South Korea
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Manavalan B, Basith S, Choi YM, Lee G, Choi S. Structure-function relationship of cytoplasmic and nuclear IκB proteins: an in silico analysis. PLoS One 2010; 5:e15782. [PMID: 21203422 PMCID: PMC3009747 DOI: 10.1371/journal.pone.0015782] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 11/23/2010] [Indexed: 12/31/2022] Open
Abstract
Cytoplasmic IκB proteins are primary regulators that interact with NF-κB subunits in the cytoplasm of unstimulated cells. Upon stimulation, these IκB proteins are rapidly degraded, thus allowing NF-κB to translocate into the nucleus and activate the transcription of genes encoding various immune mediators. Subsequent to translocation, nuclear IκB proteins play an important role in the regulation of NF-κB transcriptional activity by acting either as activators or inhibitors. To date, molecular basis for the binding of IκBα, IκBβ and IκBζ along with their partners is known; however, the activation and inhibition mechanism of the remaining IκB (IκBNS, IκBε and Bcl-3) proteins remains elusive. Moreover, even though IκB proteins are structurally similar, it is difficult to determine the exact specificities of IκB proteins towards their respective binding partners. The three-dimensional structures of IκBNS, IκBζ and IκBε were modeled. Subsequently, we used an explicit solvent method to perform detailed molecular dynamic simulations of these proteins along with their known crystal structures (IκBα, IκBβ and Bcl-3) in order to investigate the flexibility of the ankyrin repeat domains (ARDs). Furthermore, the refined models of IκBNS, IκBε and Bcl-3 were used for multiple protein-protein docking studies for the identification of IκBNS-p50/p50, IκBε-p50/p65 and Bcl-3-p50/p50 complexes in order to study the structural basis of their activation and inhibition. The docking experiments revealed that IκBε masked the nuclear localization signal (NLS) of the p50/p65 subunits, thereby preventing its translocation into the nucleus. For the Bcl-3- and IκBNS-p50/p50 complexes, the results show that Bcl-3 mediated transcription through its transactivation domain (TAD) while IκBNS inhibited transcription due to its lack of a TAD, which is consistent with biochemical studies. Additionally, the numbers of identified flexible residues were equal in number among all IκB proteins, although they were not conserved. This could be the primary reason for their binding partner specificities.
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Affiliation(s)
- Balachandran Manavalan
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Shaherin Basith
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Yong-Min Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Gwang Lee
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
- Institute for Medical Sciences, School of Medicine, Ajou University, Republic of Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
- * E-mail:
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Kim EY, Shin HY, Kim JY, Kim DG, Choi YM, Kwon HK, Rhee DK, Kim YS, Choi S. ATF3 plays a key role in Kdo2-lipid A-induced TLR4-dependent gene expression via NF-κB activation. PLoS One 2010; 5:e14181. [PMID: 21152039 PMCID: PMC2996292 DOI: 10.1371/journal.pone.0014181] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 11/11/2010] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Activating transcription factor 3 (ATF3) is a negative regulator of proinflammatory cytokine expression in macrophages, and ATF3 deficient mice are more susceptible to endotoxic shock. This study addresses the role of ATF3 in the Kdo(2)-Lipid A-induced Toll-like receptor 4 (TLR4) signaling pathway in mouse embryonic fibroblasts (MEF). Kdo(2)-Lipid A upregulates ATF3 expression in wild type MEF cells and induces both nuclear factor kappa B (NF-κB) and c-Jun N-terminal kinase (JNK) activation via the TLR4 signaling pathway, while neither of these pathways is activated in ATF3-/- MEF cells. Interestingly, in contrast to Kdo(2)-Lipid A, the activation of both NF-κB and JNK by TNF-α was normal in ATF3-/- MEF cells. METHODOLOGY/PRINCIPAL FINDINGS We found that several genes were dramatically upregulated in ATF3+/+ MEF cells in response to Kdo(2)-Lipid A treatment, while little difference was observed in the ATF3-/- MEF cells. However, we also found that the signal intensities of IκBζ in ATF3-/- MEF cells were substantially higher than those in wild type MEF cells upon microarray analyses, and upregulated IκBζ expression was detected in the cytosol fraction. CONCLUSIONS/SIGNIFICANCE Our findings indicate that ATF3 deficiency affects Kdo(2)-Lipid A-induced TLR4 signaling pathways in MEF cells, that it may upregulate IκBζ expression and that the high levels of IκBζ expression in ATF3-/- cells disrupts Kdo(2)-Lipid A-mediated signaling pathways.
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Affiliation(s)
- Eun-Young Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hye Young Shin
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Joo-Young Kim
- Institute for Medical Sciences, Ajou University School of Medicine, Suwon, Korea
| | - Dong-Gun Kim
- Institute for Medical Sciences, Ajou University School of Medicine, Suwon, Korea
| | - Yong-Min Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Hyuk-Kwon Kwon
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
| | - Dong-Kwon Rhee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - You-Sun Kim
- Institute for Medical Sciences, Ajou University School of Medicine, Suwon, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea
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Jeong DW, Choi YM, Lee SH, Choe JH, Hong KC, Park HC, Kim BC. Correlations of trained panel sensory values of cooked pork with fatty acid composition, muscle fiber type, and pork quality characteristics in Berkshire pigs. Meat Sci 2010; 86:607-15. [PMID: 20659787 DOI: 10.1016/j.meatsci.2010.04.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 04/15/2010] [Accepted: 04/20/2010] [Indexed: 11/29/2022]
Abstract
The objective was to examine the relationship of trained panel sensory scores of cooked pork with fatty acid composition, muscle fiber type, and meat quality characteristics from Berkshire pigs. No or few associations were found between the panel sensory scores of cooked meat, especially tenderness attributes, and fatty acid composition; however, intramuscular fat content positively correlated with off-flavor score (r=0.31). On the other hand, the morphological characteristics of muscle fibers were correlated with panel sensory values. Muscles with smaller cross-sectional area and higher density of fibers were more closely associated with softer, more tender panel scores and a lower number of chews than muscles with larger fiber area and lower density of fibers. The water holding capacity test of filter-paper fluid uptake was moderately correlated with panel scores of softness (r=0.33), initial tenderness (r=0.38), chewiness (r=0.40), juiciness (r=-0.27), flavor intensity (r=-0.23), and off-flavor (r=0.30). Panel sensory values of Berkshire pig meat was moderately related to postmortem meat quality, especially water holding capacity. A more thorough understanding of the relationships between fatty acid composition and muscle fiber type with palatability is needed.
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Affiliation(s)
- D W Jeong
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-713, South Korea
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Kim SM, Kim SH, Lee JR, Jee BC, Ku SY, Suh CS, Choi YM, Kim JG, Moon SY. The effects of hormone therapy on metabolic risk factors in postmenopausal Korean women. Climacteric 2010; 14:66-74. [PMID: 20649504 DOI: 10.3109/13697137.2010.498593] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [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
OBJECTIVE We sought to assess the prevalence of metabolic syndrome (MetS) among Korean postmenopausal women and to investigate the effect of hormone therapy status and reproductive characteristics on body composition and MetS risk factors. STUDY DESIGN We performed a cross-sectional study involving a cohort of 2005 postmenopausal Korean women. We defined MetS using the modified National Cholesterol Education Program (NCEP) criteria proposed by the American Heart Association/National Heart, Lung, and Blood Institute guidelines. The criteria for abdominal obesity were adopted from the cut-offs suggested by the Korean Society for the Study of Obesity. Participants with three or more of the following conditions were classified as having MetS: waist circumference ≥ 85 cm; blood pressure ≥ 130/85 mmHg; fasting plasma triglycerides ≥ 150 mg/dl; high density lipoprotein cholesterol < 50 mg/dl; glucose ≥ 100 mg/dl and/or receiving treatment for their condition. RESULTS The prevalence of MetS was 22.1% in the study population and increased with age. After adjusting for age and related reproductive characteristics, it was found that ever-use of hormone therapy (prior or current) was associated with decreased risk of postmenopausal MetS. Among individual risk factors for MetS, current hormone therapy seemed to be associated with decreased prevalence of abdominal obesity and better glucose metabolism and prior use of hormone therapy were associated with lower risk of abdominal obesity and high blood pressure. CONCLUSION Postmenopausal hormone therapy is associated with decreased risk of MetS in postmenopausal Korean women.
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Affiliation(s)
- S M Kim
- Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, 28 Yeongeon-dong, Jongno-gu, Seoul, Korea
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Shin DH, Chai JY, Park EA, Lee W, Lee H, Lee JS, Choi YM, Koh BJ, Park JB, Oh CS, Bok GD, Kim WL, Lee E, Lee EJ, Seo M. Finding ancient parasite larvae in a sample from a male living in late 17th century Korea. J Parasitol 2010; 95:768-71. [PMID: 19071966 DOI: 10.1645/ge-1763.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2008] [Accepted: 11/19/2008] [Indexed: 11/10/2022] Open
Abstract
Parasitological examination of samples from tombs of the Korean Joseon Dynasty (1392-1910) could be helpful to researchers in understanding parasitic infection prevalence in pre-industrial Korean society. Whereas most of our previous parasitological studies revealed the presence of ancient parasite eggs in coprolites of Korean mummies, a sample from a man living in late 17th century Korea proved to be relatively unique in possessing what appeared to be several species of parasite larvae. The larvae identified included Strongyloides stercoralis and Trichostrongylus spp., along with eggs of Ascaris lumbricoides, Trichuris trichiura, and Paragonimus westermani. Since ancient parasite larvae retain enough morphology to make proper species identification possible, even after long burial times, the examination of parasite larvae within ancient samples will be conducted more carefully in our future work.
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Affiliation(s)
- D H Shin
- Institute of Forensic Medicine, Seoul National University, Seoul 110-799, South Korea
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Jung WY, Choi YM, Rhee MS. Potential use of supercritical carbon dioxide to decontaminate Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella typhimurium in alfalfa sprouted seeds. Int J Food Microbiol 2009; 136:66-70. [PMID: 19733412 DOI: 10.1016/j.ijfoodmicro.2009.08.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 07/27/2009] [Accepted: 08/09/2009] [Indexed: 11/17/2022]
Abstract
We sought to develop a method of decontaminating alfalfa sprouts of Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella typhimurium without altering the seed germination capability using supercritical carbon dioxide (SC-CO(2)). Samples were treated with SC-CO(2) at 10, 15, or 20 MPa and temperatures of 35, 40, or 45 degrees C for 5, 10, or 15 min. The germination percentage was measured after three days of germination. Generally, treating seeds with SC-CO(2) at higher pressures, temperatures, or for longer treatment times resulted in greater microbial reductions than treatments at lower pressures, temperatures, or for shorter treatment times. SC-CO(2) treatment clearly reduced the microorganism levels in alfalfa seeds; in particular, treatment at 20 MPa and 45 degrees C for 15 min reduced levels of the three pathogens by >7.0 log colony forming units (CFU)/g. However, SC-CO(2) treatment at a high pressure and high temperature, especially treatment at 20 MPa and 40 or 45 degrees C, impaired the seed germination capability in some cases. Without impairing the germination capability, the maximum reduction level of E. coli O157:H7 was 3.51 CFU/g with SC-CO(2) treatment at 15 MPa and 35 degrees C for 10 min. Maximum reductions of L. monocytogenes and S. typhimurium were 2.65 and 2.48 log CFU/g, respectively, with treatment at 10 MPa and 45 degrees C for 5 min. Therefore, our results indicate that SC-CO(2) treatment can be used to effectively improve alfalfa seed safety.
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Affiliation(s)
- W Y Jung
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul, South Korea
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Nam YJ, Choi YM, Lee SH, Choe JH, Jeong DW, Kim YY, Kim BC. Sensory evaluations of porcine longissimus dorsi muscle: Relationships with postmortem meat quality traits and muscle fiber characteristics. Meat Sci 2009; 83:731-6. [PMID: 20416630 DOI: 10.1016/j.meatsci.2009.08.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Revised: 02/23/2009] [Accepted: 08/10/2009] [Indexed: 11/19/2022]
Abstract
The objective of this study was to investigate sensory evaluations and their relationships with meat quality measurements and histochemical characteristics in both fresh and cooked pork. Based on the results, postmortem meat quality traits were closely related to almost all the evaluated sensory attributes. With regard to histochemical characteristics, muscle fiber area was related to both fresh- (r=0.18, P<0.05) and cooked-meat color (r=-0.24, P<0.01) as well as abnormal flavor intensity (r=0.25, P<0.01), and muscle fiber composition was associated with fresh pork color and taste acceptability after cooking. There were no significant relationships (P>0.05) between type IIa muscle fiber content and the evaluated sensory attributes; however, good meat sensory quality was partially explained by the percentage of type I fiber.
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Affiliation(s)
- Y J Nam
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, South Korea
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Choe JH, Choi YM, Lee SH, Nam YJ, Jung YC, Park HC, Kim YY, Kim BC. The relation of blood glucose level to muscle fiber characteristics and pork quality traits. Meat Sci 2009; 83:62-7. [PMID: 20416649 DOI: 10.1016/j.meatsci.2009.03.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 03/04/2009] [Accepted: 03/30/2009] [Indexed: 10/20/2022]
Abstract
The purpose of this study was to examine the relationships between blood glucose level, muscle fiber characteristics, and pork quality. Muscle samples were classified into three groups based on blood glucose level measured at slaughter. Pigs with higher area percentages of fiber type IIB showed higher blood glucose levels compared to pigs with lower area percentages of fiber type IIB. The high blood glucose level group presented lower pH values at 45min and 24h postmortem, and also had higher L(∗) values and reduced water holding capacity. In addition, blood glucose level had a negative relationship with pH(45min) and the solubility of sarcoplasmic and myofibrillar proteins, whereas it had a positive relationship with drip loss and filter-paper fluid uptake. In conclusion, blood glucose level was related to muscle fiber area composition and could partially indicate ultimate pork quality.
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Affiliation(s)
- J H Choe
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-713, South Korea
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Choi YM, Jang JY, Jang M, Kim SH, Kang YK, Cho H, Chung S, Park MK. Modulation of firing activity by ATP in dopamine neurons of the rat substantia nigra pars compacta. Neuroscience 2009; 160:587-95. [PMID: 19272429 DOI: 10.1016/j.neuroscience.2009.02.067] [Citation(s) in RCA: 11] [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] [Received: 10/25/2008] [Revised: 02/12/2009] [Accepted: 02/27/2009] [Indexed: 11/26/2022]
Abstract
ATP acts as a neurotransmitter or co-neurotransmitter in many areas of the CNS and peripheral nervous systems; however, little is known about the expression and functional role of purinoceptors (P2) in midbrain dopaminergic neurons. Therefore, we investigated P2X receptor expression and regulation of spontaneous firing activity in dopaminergic neurons of the substantia nigra pars compacta (SNc) in rats using patch-clamp and Ca(2+)-imaging techniques. In most neurons, application of ATP (1 microM-1 mM) increased firing rate dose-dependently (EC(50)=1.26+/-0.26 microM, n=45). When the P2-receptor agonists such as 2-methylthio-adenosine 5'-triphosphate (2-MeSATP) or ATPgammaS were applied or pressure-applied to the neuron, the firing activity increased together with a rise in cytosolic Ca(2+) concentration ([Ca(2+)]c), but application of beta,gamma-methylene ATP (P2X(1, 3) agonist) or methylthio-adenosine 5'-diphosphate (P2Y(1) agonist) had no effect. In many neurons, the effect of ATP was abolished by the application of the P2-receptor antagonists, suramin or pyridoxal-phosphate-6-azophenyl-2',4'-disulfonic acid (PPADS). When ATP was applied in a Ca(2+)-free solution, there was no detectable change in [Ca(2+)]c, suggesting that ATP does not release Ca(2+) from intracellular stores. In the single-cell reverse transcription polymerase chain reaction (RT-PCR), we found that 65% of dopaminergic neurons expressed mRNAs for P2X receptors; positive amplifications of P2X(6) (57.1%), P2X(2/6) (25.0%), and P2X(4) mRNA (17.9%), respectively. From the above results, we could conclude that ATP modulates firing activities in the rat SNc dopaminergic neurons, possibly via P2X(2), P2X(2/6), and/or P2X(4) receptors.
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Affiliation(s)
- Y M Choi
- Department of Physiology, Sungkyunkwan University, School of Medicine and Center for Molecular Medicine, Samsung Biomedical Research Institute, Suwon, Korea
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Koo MS, Kim YC, Kim MH, Nahm FS, Suh JH, Shin HY, Jo JY, Choi YM, Lee SC. Lead Breakage in Implanted Spinal Cord Stimulation Systems - A case report -. Korean J Anesthesiol 2008. [DOI: 10.4097/kjae.2008.54.2.229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Mi-suk Koo
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Yong Chul Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Mi-hyun Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Francis Sahngun Nahm
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong-Hun Suh
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Hwa-Yong Shin
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ji-yon Jo
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Yong-Min Choi
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Chul Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
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Choe JH, Choi YM, Lee SH, Shin HG, Ryu YC, Hong KC, Kim BC. The relation between glycogen, lactate content and muscle fiber type composition, and their influence on postmortem glycolytic rate and pork quality. Meat Sci 2007; 80:355-62. [PMID: 22063340 DOI: 10.1016/j.meatsci.2007.12.019] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2007] [Revised: 12/17/2007] [Accepted: 12/19/2007] [Indexed: 11/16/2022]
Abstract
This study examined the relation between glycogen, lactate content and muscle fiber type composition, and evaluated their influence on postmortem glycolytic rate and meat quality. Muscle samples were classified based on their glycogen and lactate content at 45min postmortem. Muscles with low glycogen and high lactate levels showed low muscle pH(45min) and high R-values. However, muscles with low glycogen and lactate levels showed normal rates of postmortem glycolysis and normal meat quality. On the other hand, muscles with high glycogen and lactate content showed rapid postmortem glycolysis, paler surface color, higher drip loss, and higher extents of protein denaturation than muscles with high glycogen and low lactate content. These results may be partially explained by muscle fiber type composition. Muscles with low glycogen and lactate content at early postmortem are composed of significantly higher fiber type I and lower fiber type IIB as compared to muscles with high glycogen and lactate content.
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Affiliation(s)
- J H Choe
- Division of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 136-713, South Korea
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