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Barathikannan K, Tyagi A, Shan L, Kim NH, Lee DS, Park JS, Chelliah R, Oh DH. Antiobesity and Antioxidative Effect of Fermented Brown Rice Using In Vitro with In Vivo Caenorhabditis elegans Model. Life (Basel) 2023; 13:life13020374. [PMID: 36836733 PMCID: PMC9963734 DOI: 10.3390/life13020374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Naturally occurring phytochemicals from plants or grains are crucial in reducing various metabolic disorders. Bioactive phytonutrients are abundant in the Asian dietary staple, brown rice. This research evaluated the impact of lactic acid bacteria (LABs) bioconversion and fermentation on antioxidant and antiobesity activities and ferulic acid content in brown rice. The combination of bioconversion with Pediococcus acidilactici MNL5 among all LABs used showed a synergistic impact with 24 h of solid-state brown rice fermentation. The 24-h MNL5 fermented brown rice (FBR) demonstrated the most potent pancreatic lipase inhibitory activity (85.5 ± 1.25%) compared to raw brown rice (RBR) (54.4 ± 0.86%). The antioxidant potential of MNL5-FBR was also found to be highest in the DPPH assay (124.40 ± 2.40 mg Trolox Equiv./100 g, DW), ABTS assay (130.52 ± 2.32 mg Trolox Equiv./100 g, DW), and FRAP assay (116.16 ± 2.42 mg Trolox Equiv./100 g, DW). Based on higher antioxidant and antiobesity activities, samples were quantified for ferulic acid content using the HPLC-MS/MS approach. Furthermore, C. elegans supplementation with FBR showed enhanced life span and lipid reduction in fluorescence microscope analysis compared to the control. Our results indicate that the expression study using the C. elegans model (N2 and Daf-2 models) fat gene was conducted, showing a lowering of obesity ability in FBR-fed worms. Our study indicates that FBR has improved antioxidant and antiobesity actions, especially in MNL5-FBR, and can be employed to develop functional foods that combat obesity.
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Affiliation(s)
- Kaliyan Barathikannan
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
- Agricultural and Life Science Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Akanksha Tyagi
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
| | - Lingyue Shan
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
| | - Nam-Hyeon Kim
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
| | - Deuk-Sik Lee
- Life Science Institute, Well-being LS Co., Ltd., Gangneung 25451, Republic of Korea
| | - Jong-Soon Park
- Life Science Institute, Well-being LS Co., Ltd., Gangneung 25451, Republic of Korea
| | - Ramachandran Chelliah
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
- Kangwon Institute of Inclusive Technology KIIT, Kangwon National University, Chuncheon 24341, Republic of Korea
- Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu 600124, India
| | - Deog-Hwan Oh
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200701, Republic of Korea
- Kangwon Institute of Inclusive Technology KIIT, Kangwon National University, Chuncheon 24341, Republic of Korea
- Correspondence:
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McLaughlin VV, Channick R, Kim NH, Frantz RP, McConnell J, Melendres‐Groves L, Miller C, Ravichandran A, Rodriguez‐Lopez J, Brand M, Leroy S, Wetherill G, Chin KM. Safety of macitentan for the treatment of pulmonary hypertension: Real‐world experience from the OPsumit® USers Registry (OPUS) and OPsumit® Historical USers cohort (OrPHeUS). Pulm Circ 2022; 12:e12150. [PMID: 36381290 PMCID: PMC9661363 DOI: 10.1002/pul2.12150] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 08/11/2022] [Accepted: 09/09/2022] [Indexed: 12/05/2022] Open
Abstract
Macitentan is an oral endothelin receptor antagonist for the management of pulmonary arterial hypertension (PAH). The OPsumit® USers Registry (OPUS) and the OPsumit® Historical USers cohort (OrPHeUS) medical chart review provide real‐world data for patients newly initiating macitentan. This study aims to describe the characteristics, safety profile, and clinical outcomes of PAH patients newly treated with macitentan in the combined OPUS/OrPHeUS data set. OPUS was a prospective, multicenter, long‐term, observational drug registry from April 2014 to June 2020. OrPHeUS was a retrospective, US, multicenter chart review: observation period October 2013 to March 2017. All analyses were descriptive. At registry closure in June 2020, the combined population consisted of 5654 patients, of whom 81.9% were diagnosed with PAH. For these 4626 patients, median duration of macitentan exposure observed was 14.5 (Q1 = 5.2, Q3 = 29.0) months; idiopathic PAH (54.8%) was the most common form of PAH; macitentan was initiated as monotherapy (37.9%), or as part of double (48.0%) or triple therapy (14.1%); discontinuation due to nonhepatic/hepatic adverse events occurred in 17.1%/0.3% of patients; 9.9% of patients experienced ≥1 hepatic adverse events; Kaplan–Meier estimates showed that at 1 year 59.9% (95% confidence interval: 58.3, 61.5) of patients were free from hospitalization and survival was 90.4% (89.3, 91.3). This analysis of real‐world data from the combined OPUS and OrPHeUS populations demonstrated that macitentan is well tolerated in a large, diverse population of PAH patients, with overall and hepatic safety profiles consistent with previous macitentan clinical trials.
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Affiliation(s)
- VV McLaughlin
- Department of Internal Medicine, Division of Cardiovascular Medicine University of Michigan Ann Arbor MI USA
| | - R Channick
- David Geffen School of Medicine University of California Los Angeles Los Angeles CA USA
| | - NH Kim
- Division of Pulmonary, Critical Care and Sleep Medicine University of California San Diego La Jolla CA USA
| | - RP Frantz
- Department of Cardiovascular Medicine Mayo Clinic Rochester MN USA
| | - J McConnell
- Kentuckiana Pulmonary Associates Louisville KY USA
| | | | - C Miller
- Pulmonary Hypertension and Pulmonary Critical Care Medicine, Piedmont Physicians, Piedmont Healthcare Austell GA USA
| | | | | | - M Brand
- Actelion Pharmaceuticals Ltd, a Janssen Pharmaceutical Company of Johnson and Johnson, Global Epidemiology Allschwil Switzerland
| | - S Leroy
- Actelion Pharmaceuticals Ltd, a Janssen Pharmaceutical Company of Johnson and Johnson, Data Science Global Regulatory Affairs Allschwil Switzerland
| | - G Wetherill
- Actelion Pharmaceuticals Ltd, a Janssen Pharmaceutical Company of Johnson and Johnson, Medical Affairs and Established Products Allschwil Switzerland
- Current affiliation: Biometric Solutions Limited, St Ives Cambridgeshire UK
| | - KM Chin
- Department of Internal Medicine, UT Southwestern Medical Center Dallas TX USA
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Channick R, Chin KM, Kim NH, Ong R, Turricchia S, Mitchell L, McLaughlin VV. Concomitant initiation of combination therapy with macitentan and tadalafil in pulmonary arterial hypertension (PAH) patients with comorbidities: real-world data from OPUS and OrPHeUS. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Guidelines for the management of pulmonary arterial hypertension (PAH) recommend early combination therapy of an endothelial receptor antagonist (ERA) and a phosphodiesterase type-5 inhibitor (PDE5i) [1]. There is, however, limited guidance about the management of PAH patients with comorbidities.
Purpose
To describe the demographics, clinical characteristics, safety, tolerability, and outcomes associated with initiation of the ERA macitentan and the PDE5i tadalafil in patients with comorbidities in the US OPsumit® USers (OPUS) and the OPsumit® Historical USers cohort (OrPHeUS) combined dataset.
Methods
This analysis reports data from the OPUS registry (Apr 2014–Jun 2020) and OrPHeUS medical chart review (Oct 2013–Mar 2017) on PAH patients initiating macitentan and tadalafil (M+T) combination therapy, in any order, as concomitant initiation (≤60 days apart, concomitant initiation group). The index date was defined as the start date of the second therapy (i.e., the start of combination therapy). Patients were further grouped by the number of comorbidities present prior to or at macitentan initiation: systemic hypertension, diabetes, renal insufficiency, BMI ≥30 kg/m2, other signs of right heart failure and atrial fibrillation. Results are presented descriptively alongside results for all PAH patients receiving M+T combination therapy (overall M+T group).
Results
Of the 1336 PAH patients that received M+T combination therapy, 431 (32%) were in the concomitant initiation group. In the concomitant initiation and overall M+T groups, respectively: 72% and 68% had ≥1 comorbidity, and the most common were systemic hypertension (47% and 47%), obesity (32% and 26%) and diabetes (23% and 22%). Patients were more likely to be older, male and have idiopathic/heritable PAH with increasing comorbidity burden (Table 1). Patients in the concomitant initiation group were more likely to be incident (median time from diagnosis: 1–2 months vs 9–24 months in the overall M+T group; Table 1). Most patients had ≥1 adverse event (AE); in both groups, patients with a high comorbidity burden (≥3) were more likely to have had an AE and to have discontinued treatment (Table 2). The incidence rate of first all-cause hospitalisation and mortality by comorbidity was comparable between the concomitant initiation and overall M+T groups.
Conclusions
In the real-world, concomitant initiation of M+T is used in PAH patients with comorbidities, usually shortly after diagnosis. Patient characteristics were similar for the concomitant initiation and overall M+T groups, with the exception of time from diagnosis. At index date, age, gender proportion, and PAH aetiology differed between the comorbidity groups. The safety profile of M+T combination therapy in the concomitant initiation group was consistent with that in the overall M+T group.
Funding Acknowledgement
Type of funding sources: Other. Main funding source(s): Actelion Pharmaceuticals Ltd, a Janssen Pharmaceutical Company of Johnson & Johnson
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Affiliation(s)
- R Channick
- University of California Los Angeles , Los Angeles , United States of America
| | - K M Chin
- University of Texas Southwestern Medical Center , Dallas , United States of America
| | - N H Kim
- University of California San Diego , San Diego , United States of America
| | - R Ong
- Actelion Pharmaceuticals Ltd , Allschwil , Switzerland
| | - S Turricchia
- Actelion Pharmaceuticals Ltd , Allschwil , Switzerland
| | - L Mitchell
- Actelion Pharmaceuticals Ltd , Allschwil , Switzerland
| | - V V McLaughlin
- University of Michigan , Ann Arbor , United States of America
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Tyagi A, Lim MJ, Kim NH, Barathikannan K, Vijayalakshmi S, Elahi F, Ham HJ, Oh DH. Quantification of Amino Acids, Phenolic Compounds Profiling from Nine Rice Varieties and Their Antioxidant Potential. Antioxidants (Basel) 2022; 11:antiox11050839. [PMID: 35624702 PMCID: PMC9137474 DOI: 10.3390/antiox11050839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/20/2022] [Accepted: 04/20/2022] [Indexed: 02/06/2023] Open
Abstract
In recent years, the health benefits of the pigmented rice varieties have been reported due to the richness of their bioactive compounds. Therefore, this study evaluated the antioxidant, total flavonoid, total phenolic, anthocyanin content, amino acid and individual phenolic compound quantification of nine Korean-grown rice varieties using spectrophotometric, HPLC-FLD-MS/MS and UHPLC Q-TOF-MS/MS methods. Our research found that the free fractions of DM29 (red rice) had the highest free radical scavenging ability of ABTS and DPPH. In contrast, the highest ferric reducing antioxidant power was observed in the 01708 brown rice variety. The majority of phenolic compounds such as quercetin, ferulic acid, p-coumaric acid, ascorbic acid, caffeic acid and genistein were found in the DM29 sample. The phenolic content of rice varies depending on its color, with DM29 red rice having the highest TPC, TFC and TAC levels. At the same time, the presence of the majority of amino acids was quantified in the 01708 and GR (Gangwon) brown rice varieties. According to this study, colored rice varieties are high in amino acids, phenolic compounds and antioxidants. This research would be beneficial in furthering our understanding of the nutritional value of different colors of rice and their high potential as a natural antioxidant.
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Affiliation(s)
- Akanksha Tyagi
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
| | - Min-Jin Lim
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
| | - Nam-Hyeon Kim
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
| | - Kaliyan Barathikannan
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
- Agricultural and Life Science Research Institute, Kangwon National University, Chuncheon 24341, Korea
| | - Selvakumar Vijayalakshmi
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
| | - Fazle Elahi
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
| | - Hun-Ju Ham
- Department of Biological Environment, College of Agriculture and Life Sciences, Kangwon National University, Gangwon-do 24341, Korea;
| | - Deog-Hwan Oh
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (A.T.); (M.-J.L.); (N.-H.K.); (K.B.); (S.V.); (F.E.)
- Correspondence: ; Fax: +82-33-2595565
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McLaughlin V, Kim NH, Hemnes AR, Highland KB, Chin KM, Farber HW, Zhao C, Narayan V, Shah M, Chakinala MM. P3671Selexipag dosing and titration in the first 500 patients enrolled in SPHERE (SelexiPag: tHe UsErs dRug rEgistry). Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
SPHERE is an ongoing US-based, multicentre, prospective, registry collecting data on use of the oral selective IP prostacyclin receptor agonist selexipag in real-world settings. Here, we report selexipag dosing and titration in the first 500 patients.
Methods
SPHERE, initiated in November 2016, will enrol 800 patients newly initiated on or already treated with selexipag at enrolment who have a documented titration regimen. Patients are followed for up to 18 months. Patients were considered “newly initiated” on selexipag if they were enrolled in SPHERE ≤60 days after starting selexipag and were considered “previously initiated” if they enrolled >60 days after starting selexipag. The highest dose is the maximum dose reached during up-titration within 6 months since initiation. Selexipag “maintenance dose” is defined as the first dose received for ≥14 days without interruption or change; “titration speed” is defined as the highest dose reached within the first 6 months after initiation divided by the time (in weeks) to reach it.
Results
The data cut-off for this analysis was December 20, 2018. Most patients had Group 1 pulmonary hypertension (PH) (95.4%), which was primarily idiopathic (49.6%) or connective tissue disease associated (26.0%). At selexipag initiation 49.8% of patients had functional class III symptoms. At the time of selexipag initiation, 19.2% of patients were on PH therapy containing a prostacyclin pathway agent (PPA) (8.5% with a parenteral PPA). The median maintenance dose of selexipag was 1200 μg BID (IQR: 800–1600 μg BID) and the median time to reach it was 8.1 wks (IQR: 5.3–11.0 wks). Low (≤400 μg BID), medium (600–1000 μg BID), and high (≥1200 μg BID) maintenance doses were attained by 15.1%, 30.8%, and 49.5% of patients, respectively (and in 23.2%, 31.2%, and 36.2%, respectively, in GRIPHON). The median titration speed was 175 μg BID/wk (IQR: 110.5–195.3 μg BID/wk), slower than the protocol-outlined 200 μg BID/wk in GRIPHON. In SPHERE, most patients titrated at speeds <200 μg BID/wk, regardless of whether they were newly (175 μg BID/wk; IQR 118.6, 195.3) or previously (175 μg BID/wk; IQR 109.8, 195.3) initiated. As expected, more patients discontinued due to adverse events in the newly (29.0%) versus previously (14.1%) initiated groups. The most common adverse events leading to selexipag discontinuation were worsening pulmonary hypertension (2.2%), headache (2.0%), myalgia (1.4%), and nausea (1.0%).
Conclusion
The median maintenance selexipag dose in SPHERE was 1200 μg BID. While the median titration speed was 175 μg BID/wk, there was marked variation and the vast majority of patients titrated slower than 200 μg BID/wk. No new safety signals were observed.
Acknowledgement/Funding
Actelion Pharmaceuticals US, Inc.
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Affiliation(s)
- V McLaughlin
- University of Michigan, Ann Arbor, United States of America
| | - N H Kim
- University of San Diego, La Jolla, United States of America
| | - A R Hemnes
- Vanderbilt University, Nashville, United States of America
| | - K B Highland
- Cleveland Clinic, Cleveland, United States of America
| | - K M Chin
- University of Texas Southwestern Medical School, Dallas, United States of America
| | - H W Farber
- Tufts Medical Center, Boston, United States of America
| | - C Zhao
- Actelion Pharmaceuticals US, Inc., South San Francisco, United States of America
| | - V Narayan
- Actelion Pharmaceuticals US, Inc., South San Francisco, United States of America
| | - M Shah
- Actelion Pharmaceuticals US, Inc., South San Francisco, United States of America
| | - M M Chakinala
- Washington University School of Medicine, St. Louis, United States of America
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Barco S, Klok FA, Konstantinides SV, Dartevelle P, Fadel E, Jenkins D, Kim NH, Madani M, Matsubara M, Mayer E, Pepke-Zaba J, Simonneau G, Delcroix M, Lang IM. P2540Sex-specific differences in the clinical presentation, surgical complications, and course of chronic thromboembolic pulmonary hypertension. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Women are more susceptible to develop several forms of pulmonary hypertension, but they may have better survival rates than men. Sparse data are available concerning sex-specific differences in chronic thromboembolic pulmonary hypertension (CTEPH).
Purpose and methods
We investigated sex-specific differences in the clinical presentation of CTEPH, functional parameters, exposure to pulmonary endarterectomy (PEA), and survival.
Results
Women constituted half of the study population (N=679 treatment-naïve patients from the European CTEPH registry) and were characterized by a lower prevalence of some cardiovascular risk factors (e.g. prior acute coronary syndrome, smoking habit, chronic obstructive pulmonary disease), but more prevalent obesity, cancer, and thyroid diseases. Median age was 62 (IQR 50–73) years in women and 63 (IQR 53–70) in men. Women underwent PEA less often than men (54% vs 65%; Figure 1, Panel A) and were exposed to fewer additional cardiac procedures, notably coronary artery bypass graft surgery (0.5% vs. 9.5%). The prevalence of specific reasons for not being operated, including the patient's refusal and the proportion of proximal vs. distal lesions, did not differ between sexes. A total of 57 (17.0%) deaths in women and 70 (20.7%) in men were recorded over long-term follow-up. Female sex was positively associated with long-term survival (adjusted Hazard Ratio 0.66; 95% Confidence Interval 0.46–0.94). Short-term mortality was identical in the two groups (Figure 1, Panel B).
Conclusions
Women with CTEPH had a lower prevalence of cardiovascular risk factors and underwent PEA less frequently than men, who, in turn, were more often exposed to additional major cardiac surgery procedures. Women had more favorable long-term survival.
Acknowledgement/Funding
The CTEPH registry is supported by a research grant from Actelion Pharmaceuticals Ltd.
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Affiliation(s)
- S Barco
- University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - F A Klok
- University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - S V Konstantinides
- University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - P Dartevelle
- Hôpital Marie-Lannelongue, Paris-Sud Univ, Department of Thoracic and Vascular Surgery and Heart-Lung Transplantation, Paris, France
| | - E Fadel
- Univ. Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, Paris, France
| | - D Jenkins
- Papworth Hospital NHS Trust, Department of Cardiothoracic Surgery, Cambridge, United Kingdom
| | - N H Kim
- University of San Diego, Division of Pulmonary and Critical Care Medicine, La Jolla, United States of America
| | - M Madani
- University of San Diego, Division of Cardiovascular and Thoracic Surgery, La Jolla, United States of America
| | - M Matsubara
- Okayama Medical Center, Department of Clinical Science, Okayama, Japan
| | - E Mayer
- Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - J Pepke-Zaba
- Papworth Hospital NHS Trust, Pulmonary Vascular Disease Unit, Cambridge, United Kingdom
| | - G Simonneau
- Hôpital Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicetre, France
| | - M Delcroix
- University Hospitals (UZ) Leuven, Department of Pneumology, Leuven, Belgium
| | - I M Lang
- Medical University of Vienna, Department of Internal Medicine II, Division of Cardiology, Vienna, Austria
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Kim YS, Shim EJ, Lee JW, Cho J, Jung HK, Kim NH, Lee JE, Min J, Noh WC, Park SH. Abstract P1-08-21: Association of depression and anxiety disorder with the risk of mortality in breast cancer: A national health insurance service study in South Korea. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-08-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
PURPOSE: To examine whether depression, anxiety disorder and their co-occurrence would increase the risk of mortality in patients with breast cancer, and whether antidepressant treatment would reduce the same.
PATIENTS AND METHODS: Data were retrieved from the database of the Korean National Health Insurance Service. Of 145,251 patients diagnosed with breast cancer between 2007 and 2014, 20,870 patients diagnosed with depression or anxiety disorder one year before breast cancer diagnosis were excluded. Thus, data of 124,381 patients were included in this study.
RESULTS: Anxiety disorder was more prevalent than depression in patients with breast cancer, and similar factors were associated with both depression and anxiety disorder. Overall, female sex, older age, residence in metropolitan areas, lower income, higher comorbidity, carcinoma in situ, and the receipt of any type of cancer therapies were associated with an increased risk of depression or anxiety disorder. Depression and anxiety disorder were associated with an increased risk of mortality (Hazard Ratio (HR) = 1.26, 95% CI=1.18–1.36; HR=1.14, 95% CI=1.08–1.22, respectively) and their co-occurrence further increased the risk (HR=1.38, 95% CI=1.24–1.54). Antidepressant treatment was related to a reduced risk of mortality. Compared to patients with no depression, among those with depression, the risk of mortality was 2.18 times higher (95% CI=1.69–2.81) in patients who did not receive antidepressant treatment and 1.25 times higher (95% CI =1.17–1.32) in those who received antidepressant treatment.
CONCLUSION: The current findings suggest that psychiatric comorbidities are markers of increased mortality risk in patients with breast cancer. This underscores the need for screening and treating depression and anxiety disorders to improve survival in breast cancer.
Citation Format: Kim YS, Shim E-J, Lee JW, Cho J, Jung HK, Kim NH, Lee JE, Min J, Noh WC, Park S-H. Association of depression and anxiety disorder with the risk of mortality in breast cancer: A national health insurance service study in South Korea [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-08-21.
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Affiliation(s)
- YS Kim
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - E-J Shim
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - JW Lee
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - J Cho
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - HK Jung
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - NH Kim
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - JE Lee
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - J Min
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - WC Noh
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - S-H Park
- Chosun University College of Medicine, Gwangju, Republic of Korea; Pusan National University, Busan, Republic of Korea; University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea; Keimyung University School of Medicine, Daegu, Republic of Korea; Seran General Hospital, Seoul, Republic of Korea; Kaywon University of Art and Design, Uiwang-si, Republic of Korea; Seoul National University, Seoul, Republic of Korea; Dankook University College of Medicine, Cheonan, Republic of Korea; Korea Institute of Radiology and Medical Science, Korea Cancer Center Hospital, Seoul, Republic of Korea; Daegu Catholic University Medical Center, Daegu, Republic of Korea
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Kim HW, Kim NH, Cho TJ, Park SM, Kim SH, Rhee MS. Factors Affecting Microbiological Quality of Vegetable- and Meat-Based Meals Served at Cafeterias in the Republic of Korea. J Food Prot 2018; 81:1838-1843. [PMID: 30320512 DOI: 10.4315/0362-028x.jfp-18-219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A total of 364 samples of vegetable- and meat-based meals were collected at three processing steps: step I, preparation of raw ingredients; step II, processing and cooking; and step III, finished meals. Microbiological quality was evaluated by using data for the prevalence and concentration of the aerobic plate counts, total coliforms (TC), fecal coliforms (FC), and Escherichia coli. The data were analyzed for differences between cafeterias, seasons, raw materials, and processing steps. Fourteen (15.2%) of the 92 finished meal samples were microbiologically unsatisfactory. Neither cafeteria nor season was significantly associated with microbiological quality ( P > 0.05). However, the type of raw ingredients and processing steps were significantly associated with differences in microbiological quality. Vegetable-based meals had higher TC concentrations than meat-based meals because salad and seasoned and fermented vegetables are not cooked, unlike heat-processed meat products. Microbial counts tended to decrease through the processing steps, and E. coli, which could only be enumerated on uncooked chicken breast (1.6 log CFU/g) and sliced pork (2.6 log CFU/g), was totally eliminated by boiling and roasting. However, the presence of FC was not completely eliminated, even by cooking, and so this group of organisms should be considered as an important indicator of hygienic meal preparation in cafeterias. Although pathogenic E. coli was not isolated in this study, continuous microbiological monitoring of composite foods served in cafeterias should be performed as the presence of TC and FC in finished meals indicates the potential for contamination by pathogenic E. coli.
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Affiliation(s)
- H W Kim
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 02841, Republic of Korea (ORCID: http://orcid.org/0000-0003-0412-1910 [M.S.R.])
| | - N H Kim
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 02841, Republic of Korea (ORCID: http://orcid.org/0000-0003-0412-1910 [M.S.R.])
| | - T J Cho
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 02841, Republic of Korea (ORCID: http://orcid.org/0000-0003-0412-1910 [M.S.R.])
| | - S M Park
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 02841, Republic of Korea (ORCID: http://orcid.org/0000-0003-0412-1910 [M.S.R.])
| | - S H Kim
- 2 Food Microbiology Division, National Institute of Food and Drug Safety Evaluation, Osong, North Chungcheong Province, 28159, Republic of Korea
| | - M S Rhee
- 1 Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 5-1 Anam-dong, Sungbuk-gu, Seoul 02841, Republic of Korea (ORCID: http://orcid.org/0000-0003-0412-1910 [M.S.R.])
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Kim NH, Choi J, Kim NH, Choi KM, Baik SH, Lee J, Kim SG. Dipeptidyl peptidase-4 inhibitor use and risk of diabetic retinopathy: A population-based study. Diabetes Metab 2018; 44:361-367. [PMID: 29752167 DOI: 10.1016/j.diabet.2018.03.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 03/09/2018] [Accepted: 03/11/2018] [Indexed: 10/17/2022]
Abstract
AIMS This study examined whether dipeptidyl peptidase (DPP)-4 inhibitor use is beneficial or harmful to diabetic retinopathy (DR) compared with other glucose-lowering agents in patients with type 2 diabetes (T2D). METHODS From a population-based cohort provided by the National Health Insurance Service in Korea, 67,743 adults with T2D were identified as having been treated with oral glucose-lowering agents between 2008 and 2013. Matching (1:1) was performed for two groups comparing ever-use (cases) and never-use (controls) of DPP-4 inhibitors (n=14,522 in each group). Cox regression analyses were used to assess risk of the following DR events: vitreous haemorrhage; vitrectomy or photocoagulation; intravitreal agent use; and blindness. RESULTS During a median follow-up of 28.4 (14.0-45.2) months, there were 305 (in controls) and 342 (in cases) composite DR events. DPP-4 inhibitor ever-use was not associated with overall risk of composite DR events [adjusted hazard ratio (HR): 1.08, 95% CI: 0.93-1.26] compared with never-use, nor was the risk of each DR outcome increased with DPP-4 inhibitor therapy either. However, DPP-4 inhibitor administration for<12 months was associated with a greater risk of composite DR events (adjusted HR: 1.31, 95% CI: 1.09-1.57) compared with other glucose-lowering agents over the same treatment period. CONCLUSION In comparison to other oral glucose-lowering agents, DPP-4 inhibitor treatment did not increase overall risk of DR. However, DPP-4 inhibitors may be associated with an increased risk of retinopathy events early in the treatment phase.
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Affiliation(s)
- N H Kim
- Division of endocrinology and metabolism, Department of internal medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 02841 Seoul, Korea
| | - J Choi
- Department of biostatistics, Korea University College of Medicine, Seoul, Korea
| | - N H Kim
- Division of endocrinology and metabolism, Department of internal medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 02841 Seoul, Korea
| | - K M Choi
- Division of endocrinology and metabolism, Department of internal medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 02841 Seoul, Korea
| | - S H Baik
- Division of endocrinology and metabolism, Department of internal medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 02841 Seoul, Korea
| | - J Lee
- Department of biostatistics, Korea University College of Medicine, Seoul, Korea
| | - S G Kim
- Division of endocrinology and metabolism, Department of internal medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, Anam-dong 5-ga, Seongbuk-gu, 02841 Seoul, Korea.
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Kim NH, Heo JD, Kim JH, Hwang KH, Jeong EJ. Protective effect of Aronia melanocarpa (Chokeberry) extracts from benign prostatic hyperplasia in rats. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- NH Kim
- Gyeongnam Department of Environment & Toxicology, Korea Institute of Toxicology, 660 – 844, Jinju, Korea, Republic of (South)
| | - JD Heo
- Gyeongnam Department of Environment & Toxicology, Korea Institute of Toxicology, 660 – 844, Jinju, Korea, Republic of (South)
| | - JH Kim
- Gyeongnam Department of Environment & Toxicology, Korea Institute of Toxicology, 660 – 844, Jinju, Korea, Republic of (South)
| | - KH Hwang
- Gyeongnam Department of Environment & Toxicology, Korea Institute of Toxicology, 660 – 844, Jinju, Korea, Republic of (South)
| | - EJ Jeong
- Gyeongnam National University of Science and Technology, College of Life Science and Natural Resources, 660 – 758, Jinju, Korea, Republic of (South)
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Kim NH, Lim SJ, Chae HM, Park YC. Complete mitochondrial genome of the Amur hedgehog Erinaceus amurensis (Erinaceidae) and higher phylogeny of the family Erinaceidae. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019300. [PMID: 28198504 DOI: 10.4238/gmr16019300] [Citation(s) in RCA: 7] [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] [Indexed: 11/03/2022]
Abstract
We sequenced and characterized the complete mitogenome (KX964606) of the Amur hedgehog Erinaceus amurensis to provide more data for comparative mitogenomics of the genus Erinaceus (Erinaceidae). The mitogenome of E. amurensis is a circular molecule 16,941 bp long, consisting of a control region and a conserved set of 37 genes containing 13 protein-coding genes, 22 tRNA genes, and two rRNA genes (12S rRNA and 16S rRNA). The mitogenome of E. amurensis is AT-biased, with a nucleotide composition of 33.9% A, 21.1% C, 32.6% T, and 12.4% G. The mitogenomes of E. amurensis and the closely related hedgehog species E. europaeus, excluding the control region (66.7%), share over 90% sequence similarity. According to the inter-generic relationship based on six mitogenomes described from five genera of Erinaceidae, the subfamilies Erinaceinae and Galericinae are strongly supported as monophyletic groups, with each genus well placed within its own subfamily. Within the subfamily Erinaceinae, E. amurensis is a sister species to E. europaeus, and the relationship between Hemiechinus and Erinaceus is strongly supported. Within the subfamily Galericinae, the clade of Hylomys + Neotetracus was sister to that of Echinosorex, with clades supported by high values. Our findings will help to understand the codon usage pattern and molecular evolution of E. amurensis, and provide insight into inter-generic relationships within the family Erinaceidae. In future studies, the inclusion of mitogenomes from other genera would greatly enhance our understanding of higher phylogeny within the Erinaceidae.
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Affiliation(s)
- N H Kim
- Division of Forest Science, Kangwon National University, Chuncheon, Republic of Korea
| | - S J Lim
- Division of Forest Science, Kangwon National University, Chuncheon, Republic of Korea
| | - H M Chae
- Division of Forest Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Y C Park
- Division of Forest Science, Kangwon National University, Chuncheon, Republic of Korea
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Kandil R, Xie Y, Kim NH, Nadithe V, Thakur A, Lum LG, Bassett DJP, Merkel OM. Transferrin-Polyethylenimine Nanoparticles for T Cell Targeted siRNA Delivery as Novel Anti-inflammatory Asthma Therapy. Pneumologie 2016. [DOI: 10.1055/s-0036-1584615] [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: 10/19/2022]
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Ryang JH, Kim NH, Lee BS, Kim CT, Rhee MS. Destruction of Bacillus cereus spores in a thick soy bean paste (doenjang) by continuous ohmic heating with five sequential electrodes. Lett Appl Microbiol 2016; 63:66-73. [PMID: 27214292 DOI: 10.1111/lam.12588] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/11/2016] [Accepted: 05/13/2016] [Indexed: 11/30/2022]
Abstract
UNLABELLED This study selected spores from Bacillus cereus FSP-2 strain (the isolate from a commercial doenjang processing line) as the test strain which showed significantly higher thermal resistance (P < 0·05) than B. cereus reference strain (ATCC 27348). The spores in doenjang were subjected to ohmic heating (OH) at 95, 105, 115 and 125°C for 30, 60 or 90 s using a five sequential electrode system (electrical field: 26·7 V cm(-1) ; alternating current frequency: 25 kHz). OH at 105°C for 30-90 s reduced the B. cereus spore count in doenjang samples to <4 log CFU g(-1) . Since OH treatment at 115 and 125°C caused a perceivable colour change in the product (>1·5 National Bureau of Standards units), treatment at 105°C for 60 s was selected and applied on a large scale (500 kg of product). Reliable and reproducible destruction of B. cereus spores occurred; the reductions achieved (to < 4 log CFU g(-1) ) met the Korean national standards. Scanning electron microscopy revealed microstructural alterations in the spores (shrinkage and a distorted outer spore coat). OH is an effective method for destroying B. cereus spores to ensure the microbiological quality and safety of a thick, highly viscous sauce. SIGNIFICANCE AND IMPACT OF THE STUDY This study shows that an ohmic heating (OH) using a five sequential electrode system can effectively destroy highly heat-resistant Bacillus cereus spores which have been frequently found in a commercial doenjang processing line without perceivable quality change in the product. In addition, it may demonstrate high potential of the unique OH system used in this study that will further contribute to ensure microbiological quality and safety of crude sauces containing high levels of electrolyte other than doenjang as well.
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Affiliation(s)
- J H Ryang
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
- Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - N H Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - B S Lee
- Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - C T Kim
- Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - M S Rhee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Ryang JH, Kim NH, Lee BS, Kim CT, Lee SH, Hwang IG, Rhee MS. Inactivation of Bacillus cereus spores in a tsuyu sauce using continuous ohmic heating with five sequential elbow-type electrodes. J Appl Microbiol 2015; 120:175-84. [PMID: 26497155 DOI: 10.1111/jam.12982] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 09/30/2015] [Accepted: 10/12/2015] [Indexed: 11/27/2022]
Abstract
AIMS The effect of ohmic heating (OH) in a pilot plant system which had a zig-zag shaped (elbow-type) ohmic heater with five sequential voltage electrodes was investigated on Bacillus cereus spores in a commercial tsuyu sauce. METHODS AND RESULTS The electrical field was fixed at 26·7 V cm(-1) with an alternating current frequency of 25 kHz. Raw tsuyu sauce (50 l) inoculated with B. cereus spores was submitted in a 4 × 3 factorial design to the OH system and heated at 95, 105, 115, and 125°C each for 30, 60, and 90 s. Survival of B. cereus spores and colour change in the commercial tsuyu sauce were both measured before and after treatment. As the treatment temperature and time increased, the number of surviving B. cereus spores decreased. The OH treatment in a bath-type process at 105°C for more than 30 s resulted in the total inactivation of the inoculated B. cereus spores (average 5·4 log reductions to undetectable levels after treatment). The OH protocol of heating at 105°C for 60 s which ensure complete eradication of the inoculated spores without compromising product quality was chosen and investigated for its suitability for commercial application on bulk quantities of samples (500 l). Reliable and reproducible reductions in B. cereus spore counts of 4·7-5·5 log CFU ml(-1) (mean ± standard deviation = 5·1 ± 0·3 CFU ml(-1) ) were achieved by the selected protocol of the continuous OH treatment (105°C for 60 s). CONCLUSION This study suggests that OH treatment with five sequential elbow-type electrodes has great potential as an industrial sterilizing method for liquid food contaminated with B. cereus spores. SIGNIFICANCE AND IMPACT OF THE STUDY This procedure will enhance the microbiological quality of liquid foods while minimizing quality deterioration.
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Affiliation(s)
- J H Ryang
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea.,Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - N H Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
| | - B S Lee
- Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - C T Kim
- Food Safety Research Institute, NONGSHIM Co., Ltd., Seoul, Korea
| | - S H Lee
- Nutrition Safety Policy Division, Ministry of Food and Drug Safety, Osong, North Chungcheong Province, Korea
| | - I G Hwang
- Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, Osong, North Chungcheong Province, Korea
| | - M S Rhee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Kim SA, Jeon SH, Kim NH, Kim HW, Lee NY, Cho TJ, Jung YM, Lee SH, Hwang IG, Rhee MS. Changes in the Microbial Composition of Microbrewed Beer during the Process in the Actual Manufacturing Line. J Food Prot 2015; 78:2233-9. [PMID: 26613919 DOI: 10.4315/0362-028x.jfp-15-261] [Citation(s) in RCA: 3] [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: 11/11/2022]
Abstract
This study investigated changes in the microbial composition of microbrewed beer during the manufacturing processes and identified potential microbial hazards, effective critical quality control points, and potential contamination routes. Comprehensive quantitative (aerobic plate count, lactic acid bacteria, fungi, acetic acid bacteria, coliforms, and Bacillus cereus) and qualitative (Escherichia coli and eight foodborne pathogens) microbiological analyses were performed using samples of raw materials (malt and manufacturing water), semiprocessed products (saccharified wort, boiled wort, and samples taken during the fermentation and maturation process), and the final product obtained from three plants. The initial aerobic plate count and lactic acid bacteria counts in malt were 5.2 and 4.3 log CFU/g, respectively. These counts were reduced to undetectable levels by boiling but were present at 2.9 and 0.9 log CFU/ml in the final product. Fungi were initially present at 3.6 log CFU/g, although again, the microbes were eliminated by boiling; however, the level in the final product was 4.6 log CFU/ml. No E. coli or foodborne pathogens (except B. cereus) were detected. B. cereus was detected at all stages, although it was not present in the water or boiled wort (total detection rate ¼ 16.4%). Results suggest that boiling of the wort is an effective microbial control measure, but careful management of raw materials and implementation of effective control measures after boiling are needed to prevent contamination of the product after the boiling step. The results of this study may constitute useful and comprehensive information regarding the microbiological quality of microbrewed beer.
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Affiliation(s)
- S A Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - S H Jeon
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - N H Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - H W Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - N Y Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - T J Cho
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Y M Jung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - S H Lee
- Nutrition Safety Policy Division, Ministry of Food and Drug Safety, 187 Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - I G Hwang
- Food Safety Risk Assessment Division, National Institute of Food and Drug Safety Evaluation, 187 Osongsaengmyeong 2-ro, Osong-eup, Heungdeok-gu Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - M S Rhee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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Ghofrani A, Simonneau G, D'Armini AM, Grimminger F, Hoeper MM, Jansa P, Kim NH, Wang C, Wilkins M, Fritsch A, Davie N, Colorado P, Mayer E. Riociguat zur Behandlung der chronisch thromboembolischen pulmonalen Hypertonie (CTEPH): 2-Jahres-Ergebnisse aus der Folgestudie zur Langzeitbeobachtung CHEST-2. Pneumologie 2015. [DOI: 10.1055/s-0035-1544866] [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: 10/24/2022]
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Kim NH, Park TH, Rhee MS. Enhanced bactericidal action of acidified sodium chlorite caused by the saturation of reactants. J Appl Microbiol 2014; 116:1447-57. [PMID: 24905216 DOI: 10.1111/jam.12484] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 02/04/2014] [Accepted: 02/18/2014] [Indexed: 11/28/2022]
Abstract
AIMS Factors affecting the antibacterial action of acidified sodium chlorite (ASC), a widely used disinfectant, have not been determined. This study investigated the significant factors suggesting efficient production method to maximize bactericidal action of ASC. METHODS AND RESULTS The effects of (i) preparation procedures (total three methods); (ii) initial concentrations of reactants: sodium chlorite (SC) and citric acid (CTA) (up to maximum solubility of each reactant) and (iii) final pH values (3·0 and 2·5) to the bactericidal action of ASC were investigated with a fixed final concentration of SC (10 ppm) using various foodborne pathogens (Escherichia coli O157:H7, Listeria monocytogenes, Salmonella Typhimurium and Staphylococcus aureus). The antimicrobial compounds produced and the bactericidal effects depended on the preparation procedure and the initial concentrations of the reactants. The ASC prepared by premixing highly concentrated reactants (in particular > 40%) followed by dilution (dilution after reaction, DAR) was more effective in inactivating foodborne pathogens, and it produced higher antimicrobial compound (Cl(2) and ClO(2)) yields than the other procedures. A 5-min treatment with ASC, produced using the other procedures, resulted in a reduction of < 3·5 log CFU ml(-1) (Gram positive = 0·18-0·78; Gram negative = 0·03-3·49 log CFU ml(-1)), whereas ASC produced with the DAR procedure using the saturated reactants completely inactivated all of the test pathogens within 5 min without recovery (initial concentration = 6·94-7·08 log CFU ml(-1)). CONCLUSION The ASC production with the DAR procedure using the saturated reactants maximizes both the antimicrobial compound yields and bactericidal effects of the ASC solutions. SIGNIFICANCE AND IMPACT OF THE STUDY This study will contribute to increase the efficiency of ASC treatments for disinfections reducing the effective SC concentrations for industrial use.
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Affiliation(s)
- N H Kim
- Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul, Korea
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Kim SA, Kim NH, Lee SH, Hwang IG, Rhee MS. Survival of foodborne pathogenic bacteria (Bacillus cereus, Escherichia coli O157:H7, Salmonella enterica serovar Typhimurium, Staphylococcus aureus, and Listeria monocytogenes) and Bacillus cereus spores in fermented alcoholic beverages (beer and refined rice wine). J Food Prot 2014; 77:419-26. [PMID: 24674433 DOI: 10.4315/0362-028x.jfp-13-234] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Only limited information is available on the microbiological safety of fermented alcoholic beverages because it is still a common belief that such beverages do not provide a favorable environment for bacterial growth and survival. Thus, in this study, we examined the survival of major foodborne pathogens and spores in fermented alcoholic beverages. Foodborne pathogens (Bacillus cereus, Escherichia coli O157:H7, Listeria monocytogenes, Salmonella enterica serovar Typhimurium, and Staphylococcus aureus) and B. cereus spores (initial population, 3 to 4 log CFU/ml) were inoculated separately into three types of beer and refined rice wine, which were then stored at 5 and 22°C. Bacterial counts were assayed periodically for up to 28 days. Vegetative B. cereus counts decreased rapidly, whereas B. cereus spore counts remained constant (P > 0.05) for a long period of time in all beverages. Vegetative B. cereus cells formed spores in beer at 5 and 22°C, and the spores survived for long periods. Among vegetative cells, E. coli O157:H7 had the highest survival (only 1.49 to 1.56 log reduction during 28 days in beer at 5°C). Beer and refined rice wine supported microbial survival from several days to several weeks. Our results appear to contradict the common belief that pathogens cannot survive in alcoholic beverages. Long-term survival of pathogens (especially B. cereus and E. coli O157:H7) in beer and refined rice wine should be taken into consideration by the manufacturers of these beverages. This study provides basic information that should help further research into microbial survival in alcoholic beverages and increase the microbiological safety regulation of fermented alcoholic beverages.
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Affiliation(s)
- S A Kim
- Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, South Korea
| | - N H Kim
- Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, South Korea
| | - S H Lee
- Food Microbiology Division, Ministry of Food and Drug Safety, Cheongwon-gun, 363-951, South Korea
| | - I G Hwang
- Food Standardization Division, Ministry of Food and Drug Safety, Cheongwon-gun, 363-951, South Korea
| | - M S Rhee
- Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, South Korea.
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Rosenkranz S, Simonneau G, D'Armini AM, Ghofrani HA, Grimminger F, Hoeper MM, Jansa P, Kim NH, Wang C, Wilkins MR, Fritsch A, Davie N, Weimann G, Mayer E. Eine Zwischenanalyse der Phase-III-Langzeit-Extension-Studie mit Riociguat bei CTEPH (CHEST-2). Pneumologie 2014. [DOI: 10.1055/s-0034-1367756] [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: 10/25/2022]
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Lim JG, Heo YT, Lee SE, Jang WI, Min SG, Uhm SJ, Kim NH. A new modified cut standard straw vitrification technique reduces the apoptosis of mouse blastocysts and generates more live mouse offspring. Cryo Letters 2013; 34:598-607. [PMID: 24441370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Effects of freezing on apoptosis and autophagy in embryos are poorly understood. This study introduces a simple and successful method (modified cut standard straw, M-CSS) for cryopreservation of mouse zygotes. Apoptosis and autophagy were investigated in cultured mouse blastocysts derived from vitrified zygotes using two vitrification containers (M-CSS vs 0.25-ml straw). The percentages of zygotes that survived and developed into blastocysts and the number of cells per blastocyst were higher in the M-CSS group than in the 0.25 ml straw group; whereas the rate of apoptosis in blastocysts was significantly lower in the M-CSS group than in the 0.25-ml straw group. The expression of the apoptosis-related gene Caspase 3 in blastocysts was higher in the 0.25-ml straw group than in the M-CSS group; however, there were no significant differences in autophagy between these two groups. Vitrified-thawed mouse zygotes were transferred into recipients. The percentage of recipients that became pregnant and the percentage of transferred zygotes that developed into live offspring were significantly lower in the 0.25-ml straw group than in the M-CSS (10.2% vs. 17.5%). In conclusion, the novel M-CSS procedure improves oocyte and embryo vitrification. The standard 0.25-ml straw vitrification procedure induces mitochondrial apoptosis in zygotes in an autophagy-independent manner.
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Affiliation(s)
- J G Lim
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea. Min Byeong Yeol Obstetrics and Gynecology, Cheongju, South Korea
| | - Y T Heo
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea
| | - S E Lee
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea
| | - W I Jang
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea
| | - S G Min
- School of Medicine, Chungbuk National University, Cheongju, South Korea
| | - S J Uhm
- Industrial Education Field, Sangji Youngseo College, Wonju, South Korea
| | - N H Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea.
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Lee JM, Park SB, Oh GJ, Lee YH, Lee S, Kim NH, Kang SK. Prevalence, Awareness, Treatment and Control of Hypertension in Korea. Eur J Public Health 2013. [DOI: 10.1093/eurpub/ckt124.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
BACKGROUND Despite the fact that the National Health Insurance programmes have ensured universal coverage for Koreans, disparities in access to health care and unmet healthcare needs still exist in Korea. AIM The purpose of this study was to analyse factors affecting unmet healthcare needs of older people in Korea. METHODS This study had a cross-sectional, descriptive design using secondary data taken from the Korean National Health and Nutrition Survey conducted in 2007-2009. A complex sampling design was used, and the participants included a nationally representative sample of 3943 people older than 64 years. Socio-demographic variables, subjective health, existence of chronic diseases, quality of life and unmet healthcare needs were included in the study instruments. Logistic regression analyses were performed in order to examine the relationship between unmet healthcare needs and independent variables. RESULTS According to the results, 29.4% of older women and 14.0% of older men had not visited clinics or hospitals when they needed to obtain healthcare services (unmet healthcare needs) during the past 12 months. Older women [odds ratio (OR) = 1.831, 95% confidence interval (CI) = 1.428-2.347] and those with poor subjective health (OR = 1.708, 95% CI = 1.371-2.126) and arthritis (OR = 1.278, 95% CI = 1.029-1.586) were more likely to have unmet healthcare needs than their counterparts. CONCLUSIONS Efforts to decrease unmet healthcare needs, targeting high-risk groups (especially for older women), are needed in order to prevent disability, decrease mortality and promote the quality of life of older people.
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Affiliation(s)
- Y H Ahn
- Department of Nursing, Institute of Lifestyle Medicine, Wonju College of Medicine Yonsei University, Wonju, Republic of Korea
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Lee KH, Lee WY, Kim JH, Yoon MJ, Kim NH, Kim JH, Uhm SJ, Kim DH, Chung HJ, Song H. Characterization of GFRα-1-Positive and GFRα-1-Negative Spermatogonia in Neonatal Pig Testis. Reprod Domest Anim 2013; 48:954-60. [DOI: 10.1111/rda.12193] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 05/08/2013] [Indexed: 12/21/2022]
Affiliation(s)
- KH Lee
- Department of Animal and Food Bioscience; College of Biomedical and Health Science; Konkuk University; Chung-ju Korea Korea
| | - WY Lee
- Department of Animal and Food Bioscience; College of Biomedical and Health Science; Konkuk University; Chung-ju Korea Korea
| | - JH Kim
- Major in Animal Biotechnology; College of Animal Biotechnology; Konkuk University; Seoul Korea
| | - MJ Yoon
- Division of Animal Science and Biotechnology; Kyungpook National University; Sang-ju Korea
| | - NH Kim
- Department of Animal Science; College of Agriculture; Chungbuk National University; Choung-ju Korea
| | - JH Kim
- CHA Stem Cell Institute; Graduate School of Life Science and Biotechnology; Pochon CHA University; Seoul Korea
| | - SJ Uhm
- Department of Animal Science & Biotechnology; Sangji Youngseo College; Wonju Korea
| | - DH Kim
- Animal Biotechnology Division; National Institute of Animal Science; RDA; Suwon Korea
| | - HJ Chung
- Animal Biotechnology Division; National Institute of Animal Science; RDA; Suwon Korea
| | - H Song
- Department of Animal and Food Bioscience; College of Biomedical and Health Science; Konkuk University; Chung-ju Korea Korea
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Lee HY, Heo YT, Lee SE, Hwang KC, Lee HG, Choi SH, Kim NH. Short communication: retinoic acid plus prolactin to synergistically increase specific casein gene expression in MAC-T cells. J Dairy Sci 2013; 96:3835-9. [PMID: 23587393 DOI: 10.3168/jds.2012-5945] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 02/26/2013] [Indexed: 11/19/2022]
Abstract
Mammary alveolar (MAC-T) cells, an established bovine mammary epithelial cell line, are frequently used to investigate differentiation. A lactogenic phenotype in these cells is induced by treatment with a combination of hydrocortisone, insulin, and prolactin (PRL). The effect of the vitamin A derivative retinoic acid (RA), which induces differentiation in many cells, has not been studied in MAC-T cells. The objective of this study was to evaluate the differentiation potential of RA (1 μM) in MAC-T cells and to examine the effect of combined treatment with RA (1 μM) and PRL (5 μg/mL). Although RA treatment alone inhibited MAC-T cell proliferation, co-treatment of RA with PRL increased cell growth compared with the control group (treated with 1 μg/mL hydrocortisone and 5 μg/mL insulin). The ratio of Bcl to Bax mRNA was decreased in the RA treatment compared with RA+PRL or control. Retinoic acid-induced differentiation of MAC-T cells was associated with an increase in the mRNA expression of αS1-casein (3.9-fold), αS2-casein (4.5-fold), and β-casein (4.4-fold) compared with the control group. Expression of αS1-casein, αS2-casein, and β-casein was increased 12.9-fold, 11.9-fold, and 19.3-fold, respectively, following treatment with RA and PRL combined compared with the control group. These results demonstrate that RA induces differentiation of MAC-T cells and acts synergistically with PRL to increase specific casein gene expression.
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Affiliation(s)
- H Y Lee
- Department of Animal Science, Chungbuk National University, Chungbuk 361-763, Republic of Korea
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Lee KH, Park HJ, Seo HG, Kim JH, Lim GS, Lee WY, Kim NH, Kim JH, Lee JH, Jung HS, Sung SH, Song H. Immune modulation effect of porcine placenta extracts in weaned the pig. J Anim Sci 2013; 91:2405-13. [PMID: 23463569 DOI: 10.2527/jas.2012-5208] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In a previous study, we established a collection of appropriate porcine placental extracts using PBS at 80°C (PE-PBS80) as a food supplement to increase immune activities in a mice model. In this study, piglets were treated with 0.1%, 0.3%, and 0.5% PE-PBS80 for 3 wk after weaning. Experiments were performed at 2 separate farms using 2 different pig varieties. Composition of white blood cells, lymphocyte activation, and cytokine concentrations were analyzed to assess the immune modulation effect. In Exp. 1, the number of white blood cells increased significantly in the PE-PBS80 treatment and T- and B-cell activation increased as well (P < 0.01). Interestingly, piglets in all treatments in Exp. 2 were naturally infected by a rotavirus at the third day of the experiment but recovered after d 10. Increased lymphocyte activation was observed in the PE-PBS80 treatment (P < 0.01) regardless of viral infection. Additionally, unlike in Exp. 1, the percentage of granulocytes and concentrations of interferon-γ, IL-1β, and IgG increased in the PE-PBS80 treatment (P < 0.01) and were more active in the 0.3% PE-PBS80 treatment compared with the control and the other treatment. In conclusion, 0.3% PE-PBS80 treatment modulated immune activities in antigen-infected piglets. Therefore, the PE-PBS80 pig placental extract, particularly the 0.3% supplement to the normal diet, could be useful as an alternative feed supplement to modulate immune activity during the early piglet period.
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Affiliation(s)
- K H Lee
- Department of Animal and Food Bioscience, College of Natural Science, Konkuk University, Chung-ju 380-701, Korea.
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Lee WY, Chai SY, Lee KH, Park HJ, Kim JH, Kim B, Kim NH, Jeon HS, Kim IC, Choi HS, Song H. Identification of the DDAH2 Protein in Pig Reproductive Tract Mucus: A Putative Oestrus Detection Marker. Reprod Domest Anim 2013; 48:e13-6. [DOI: 10.1111/j.1439-0531.2012.02122.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kim NH, Lim HY, Im KS, Kim JH, Sur JH. Identification of triple-negative and basal-like canine mammary carcinomas using four basal markers. J Comp Pathol 2012; 148:298-306. [PMID: 23079102 DOI: 10.1016/j.jcpa.2012.08.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/23/2012] [Accepted: 08/28/2012] [Indexed: 01/11/2023]
Abstract
Molecular-based classification of canine mammary carcinomas (CMCs) has been a recent research focus. In human breast cancer, triple-negative and basal-like phenotypes are distinct molecular subgroups that are known for their poor prognosis, but these tumours are not yet well defined in the dog. The aim of this study was to determine whether CMCs include triple-negative and basal-like phenotypes by immunohistochemical assessment of expression of the oestrogen receptor (OR), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) and four basal markers, cytokeratin (CK) 14, CK5/6, p63 and the epidermal growth factor receptor (EGFR). In this study of 241 CMCs, 45 triple-negative tumours (OR(-), PR(-) and HER2(-)) were identified and this phenotype was associated with an unfavourable prognosis. In these tumours, the expression of CK14, CK5/6 and EGFR was related to clinicopathological parameters, while the expression of p63 was not relevant. The majority of the triple-negative tumours were of the basal-like phenotype, given that 75.6% of them expressed more than two basal markers. However, three of the basal markers were not uniformly expressed; therefore, the proportion of the basal-like phenotype was altered on the basis of the selection of the markers. Although both triple-negative and basal-like phenotypes are distinct entities in CMC, further study is needed to differentiate one from the other.
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Affiliation(s)
- N H Kim
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Center, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea
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Kim JH, Chon SK, Im KS, Kim NH, Cho KW, Sur JH. Infiltrating Foxp3+ regulatory T cells and histopathological features in canine classical and spermatocytic seminomas. Reprod Domest Anim 2012; 48:218-22. [PMID: 22775571 DOI: 10.1111/j.1439-0531.2012.02135.x] [Citation(s) in RCA: 12] [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] [Indexed: 11/30/2022]
Abstract
In humans, regulatory T (T reg) cells are known to play a critical role in both the regulation of immune homoeostasis and the progression of cancer. However, there is little information about the identification, characterization and the function of T reg cells in canine tumours. We identified T reg cells in 28 canine seminoma samples using a Forkhead box P3 (Foxp3) antibody and investigated the relationship between T reg cell infiltration and histopathological features of classical and spermatocytic seminomas (SE and SS, respectively). The Foxp3 protein showed nuclear immunostaining in infiltrating lymphocytes, and Foxp3+ cells were diffused or focally distributed in seminoma tissues. Foxp3+ cells were frequently present in the SS histotype, in seminomas that showed no evidence of tumour cell invasion into the vessels and in seminomas showing a diffuse growth pattern with three cell types. Neither the SE/SS histotype nor the histopathological features of the tumour correlated with Foxp3+ cell counts. These results indicate that Foxp3+ T reg cells may be associated with a less malignant histological phenotype or may not play a critical role in the immune response of canine seminomas. Moreover, Foxp3+ T reg cells may be associated with SS seminoma, but further studies, involving a larger number of samples, are required to better understand whether these cells play a critical role in the immune response in canine seminomas. This is the first report to demonstrate the characteristics of T reg cell infiltration in canine seminoma.
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Affiliation(s)
- J H Kim
- Department of Veterinary Pathology, Small Animal Tumour Diagnostic Centre, College of Veterinary Medicine, Konkuk University, Seoul, Korea
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Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is a form of pulmonary hypertension caused by obstruction and vascular remodelling of pulmonary arteries following pulmonary embolism. Risk factors that predispose patients to CTEPH include the size of the initial thrombus and numerous associated host or medical conditions. Haemostatic risk factors include elevated levels of factor VIII and phospholipid antibodies or intrinsic abnormalities in fibrinogen. Medical conditions that are associated with an increased risk of CTEPH include a history of splenectomy, cancer, ventriculoatrial shunt, chronic inflammatory disease, antiphospholipid antibodies and hypothyroidism. Although CTEPH is potentially curable by pulmonary endarterectomy (PEA), up to 40% of patients evaluated for PEA may be denied surgery depending on the level of surgical experience and disease accessibility after pre-operative assessment. Furthermore, an estimated 10-15% of patients are at risk for residual pulmonary hypertension following PEA surgery, due to significant concomitant small-vessel disease. However, pre-operative identification of small-vessel involvement remains a challenge. The current medications effective in the treatment of pulmonary arterial hypertension have not demonstrated efficacy in CTEPH. Accordingly, identification of CTEPH, followed by early referral for evaluation and treatment by an experienced PEA centre, is recommended.
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Affiliation(s)
- N H Kim
- Division of Pulmonary and Critical Care Medicine, UCSD School of Medicine, San Diego, CA, USA.
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Chae HS, Jang GE, Kim NH, Son HR, Lee JH, Kim SH, Park GN, Jo HJ, Kim JT, Chang KS. Classification of Cryptococcus neoformans and yeast-like fungus isolates from pigeon droppings by colony phenotyping and ITS genotyping and their seasonal variations in Korea. Avian Dis 2012; 56:58-64. [PMID: 22545529 DOI: 10.1637/9703-030711-reg.1] [Citation(s) in RCA: 11] [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: 11/05/2022]
Abstract
Cryptococcus neoformans (C neoformans) is a frequent cause of invasive fungal disease in immunocompromised human hosts. Ninety-eight samples of pigeon droppings were collected from the pigeon shelters in Seoul, and cultured on birdseed agar (BSA) and Sabouraud dextrose agar (SDA). One hundred yeast-like colonies were selected and identified via phenotype characteristics, such as colony morphology and biochemical characteristics. This was then followed with genotyping via sequencing of the internal transcribed spacer (ITS) region. The colonies were classified into four kinds of colony color types: brown type (BrT), beige type (BeT), pink type (PT), and white type (WT). Numbers of isolated BrT, BeT, PT, and WT colonies were 22 (22%), 30 (30%), 19 (19%), and 39 (39%), respectively. All BrT colonies were identified as C neoformans. BeT were identified as 19 isolates of Cryptococcus laurentii, 10 isolates of Malassezia furfur, and 1 isolate of Cryptococcus uniguttulatus. PT was divided into two colony color types: light-PT (l-PT) and deep-PT (d-PT). Eighteen of l-PT and one of d-PT were identified as Rhodotorula glutinis and Rhodotorula mucilaginosa, respectively. WT were identified as 34 isolates of Cryptococcus guilliermondii, 3 isolates of Cryptococcus zeylanoides, 1 isolate of Cryptococcus sake, and 1 isolate of Stephanoascus ciferrii. Most strains were classified identically with the use of either phenotype or genotyping techniques, but C uniguttulatus and C sake classified by phenotyping were Pseudozyma aphidis and Cryptococcus famata by genotyping. This rapid screening technique of pathogenic yeast-like fungi by only colony characteristics is also expected to be very useful for primary yeast screening. Additionally, we investigated the seasonal variations of C neoformans and other yeast-like fungi from 379 pigeon-dropping samples that were collected from February 2011 to March 2011. We isolated 685 yeast-like fungi from the samples. Almost all C neoformans and yeast-like fungi were isolated in the fall (298 strains, 43.5%) and spring (244 strains, 35.6%). A few yeast-like fungi were isolated in winter (98 strains, 14.3%) and summer (45 strains, 6%). These results would be used as an important indicator related to epidemiology and prevention of pathogenic yeast-like fungi infections transmitted through pigeon droppings.
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Affiliation(s)
- H S Chae
- Seoul Metropolitan Government Research Institute of Public Health & Environment, Yang-Jae dong, Seo-Cho Gu, Seoul 137-131, Republic of Korea
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Kim JH, Hur JH, Lee SM, Im KS, Kim NH, Sur JH. Correlation of Foxp3 positive regulatory T cells with prognostic factors in canine mammary carcinomas. Vet J 2011; 193:222-7. [PMID: 22130461 DOI: 10.1016/j.tvjl.2011.10.022] [Citation(s) in RCA: 24] [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: 05/16/2011] [Revised: 10/03/2011] [Accepted: 10/27/2011] [Indexed: 10/15/2022]
Abstract
Regulatory T cells (Treg) cells play a crucial role in tumor progression by suppressing anti-tumor immunity, but are not well-documented in veterinary oncology. To identify the characteristics of Treg cells in tumor microenvironments, the numbers of Treg cells were analyzed and compared with histological prognostic factors and molecular biomarkers in canine mammary carcinoma (MC) tissues (n=37). Abundant Treg cells were associated with high histological grade and lymphatic invasion. The numbers of Treg cells infiltrating intratumoral areas markedly increased in tumors with poor prognostic factors, such as high histological grade, lymphatic invasion, and necrosis. These findings suggest that Treg cells play a role in canine MC progression. Furthermore, Treg cell numbers in intratumoral compartments may provide a potential prognostic factor when assessing canine MCs, which may in turn lead to the development of new immunologic therapeutics.
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Affiliation(s)
- J H Kim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Kwangjin-gu, Seoul 143-701, Republic of Korea
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Kim NH, Yun AR, Rhee MS. Prevalence and classification of toxigenic Staphylococcus aureus isolated from refrigerated ready-to-eat foods (sushi, kimbab and California rolls) in Korea. J Appl Microbiol 2011; 111:1456-64. [PMID: 21972801 DOI: 10.1111/j.1365-2672.2011.05168.x] [Citation(s) in RCA: 24] [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] [Indexed: 11/26/2022]
Abstract
AIMS To investigate the presence of toxigenic Staphylococcus aureus in ready-to-eat (RTE) Korean foods and determine the distribution of genes related to various types of toxin production. METHODS AND RESULTS A total of 3293 commercial RTE refrigerated foods (sushi, n = 1882; kimbab, n = 975; California rolls, n = 436) were collected from Korean grocery stores, department stores and convenience stores between January 2006 and June 2007. Of these, 197 (5.98%) RTE samples were contaminated with coagulase-positive Staph. aureus, that is, 61 (6.26%) kimbab, 110 (5.84%) sushi and 26 (5.96%) California rolls. Multiplex PCR determined the presence of 12 toxigenic genes: sea, seb, sec, sed, see, seg, seh, sei, sej, tst-1, eta and etb. Approximately half (49.75%) of the Staph. aureus isolates had toxigenic properties, and most of the toxigenic isolates possessed genes coding for the simultaneous production of two or more types of toxin. The most frequent toxigenic types found in Korean RTE foods were as follows: seg = sei > sea > tst-1 > etb > seh > eta > sec > sej. CONCLUSIONS This study provided a comprehensive analysis of toxigenic S. aureus isolates from Korean RTE foods and their toxigenicity types. This emphasizes the potential risk of various types of toxigenic Staph. aureus in refrigerated RTE food products, which should be better managed to establish safer food chains in global food markets. SIGNIFICANCE AND IMPACT OF THE STUDY This result may contribute to an extended database on Staph. aureus food contamination and mitigate the lack of available information on microbiological hazards in Southeast Asian Nations.
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Affiliation(s)
- N H Kim
- Division of Food Bioscience and Technology, Korea University, Seoul, South Korea
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Yang SJ, Hwang SY, Choi HY, Yoo HJ, Seo JA, Kim SG, Kim NH, Baik SH, Choi DS, Choi KM. Serum selenoprotein P levels in patients with type 2 diabetes and prediabetes: implications for insulin resistance, inflammation, and atherosclerosis. J Clin Endocrinol Metab 2011; 96:E1325-9. [PMID: 21677040 DOI: 10.1210/jc.2011-0620] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT AND OBJECTIVE The dysregulation of hepatokines may be associated with the pathogenesis of insulin resistance and type 2 diabetes. A recent study has suggested that selenoprotein P (SeP), a novel hepatokine, may play a role in the regulation of glucose metabolism and insulin sensitivity. We examined the relationship between circulating SeP levels and clinical parameters associated with insulin resistance in humans. PARTICIPANTS AND METHODS We compared serum SeP concentrations in 100 subjects with diverse glucose tolerance statuses. Furthermore, we evaluated the relationship between SeP and cardiometabolic risk factors including insulin resistance, high-sensitivity C-reactive protein, and carotid intima-media thickness. RESULTS Serum SeP concentrations were significantly higher in patients with type 2 diabetes or prediabetes than those with normal glucose tolerance (all P < 0.01) and decreased in a stepwise manner [1032.4 (495.9-2149.4) vs. 867.3 (516.3-1582.7) vs. 362.0 (252.5-694.5), P = 0.004]. In addition, overweight and obese subjects had significantly increased SeP levels compared with lean subjects (P = 0.002). Spearman's partial correlation analysis adjusted for age and gender showed a significant relationship between SeP and cardiometabolic factors including body mass index, waist circumference, systolic blood pressure, triglycerides, glucose, hemoglobin A1c, aspartate aminotransferase, and insulin resistance. Furthermore, in multiple regression analyses, SeP showed an independent association with carotid intima-media thickness as well as high-sensitivity C-reactive protein, even after adjustment for other confounding factors. CONCLUSIONS Circulating SeP concentrations were elevated in patients with glucose metabolism dysregulation and were related to various cardiometabolic parameters including insulin resistance, inflammation, and atherosclerosis.
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Affiliation(s)
- S J Yang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University Guro Hospital, Seoul 152-050, Korea
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Kim JH, Im KS, Kim NH, Yhee JY, Nho WG, Sur JH. Expression of HER-2 and nuclear localization of HER-3 protein in canine mammary tumors: histopathological and immunohistochemical study. Vet J 2010; 189:318-22. [PMID: 20947393 DOI: 10.1016/j.tvjl.2010.08.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [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: 05/17/2010] [Revised: 08/23/2010] [Accepted: 08/28/2010] [Indexed: 01/19/2023]
Abstract
HER-2 and HER-3 are transmembrane receptor proteins that are considered to be important but poorly understood biomarkers in canine tumors. In this study, the expression and the localization of HER-2 and HER-3 were evaluated immunohistochemically in canine mammary tumors (n=64; 12 benign, 52 malignant). HER-2 overexpression was identified in 2/12 (16.7%) benign and in 18/51 (35.3%) malignant cases. HER-3 was expressed in a non-nuclear localization in 11/12 (91.7%) benign and 18/52 (34.6%) malignant tumors. In contrast, HER-3 was expressed in the nucleus of neoplastic cells in 0/12 (0%) benign and 22/52 (42.3%) malignant tumors. Nuclear HER-3 expression was higher in neoplastic epithelial cells compared to myoepithelial cells, and positively correlated with high histological grade and lymphatic vessel invasion. These results suggest that nuclear HER-3 expression is significantly associated with tumor progression and metastasis and may serve as a useful prognostic biomarker in canine malignant mammary tumors.
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Affiliation(s)
- J H Kim
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, 1 Hwayang-dong, Kwangjin-gu, Seoul 143-701, Republic of Korea
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Xu Y, Lee SH, Kim HS, Kim NH, Piao S, Park SH, Jung YS, Yook JI, Park BJ, Ha NC. Role of CK1 in GSK3beta-mediated phosphorylation and degradation of snail. Oncogene 2010; 29:3124-33. [PMID: 20305697 DOI: 10.1038/onc.2010.77] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The epithelial to mesenchymal transition (EMT) that occurs during embryonic development has begun to attract attention as a potential mechanism for tumor cell metastasis. Snail is a well-known Zn-finger transcription factor that promotes EMT by repressing E-cadherin expression. It is known that Snail is phosphorylated by GSK3beta and degraded by beta-TrCP-mediated ubiquitination. Here we described another protein kinase, CK1, whose phosphorylation of Snail is required for the subsequent GSK3beta phosphorylation. Specific inhibition or depletion of CK1varepsilon inhibits the phosphorylation and degradation of Snail and promotes cell migration, suggesting a central role of CK1varepsilon in the EMT process. Furthermore, our study uncovered distinct roles and steps of Snail phosphorylation by CK1varepsilon and GSK3beta. Taken together, we identified CK1varepsilon as a new component of the Snail-mediated EMT process, providing insight into the mechanism of human cancer metastasis.
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Affiliation(s)
- Y Xu
- Department of Manufacturing Pharmacy, College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, Republic of Korea.
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Park SJ, Kim M, Kim NH, Oh MK, Cho JK, Jin JY, Kim IS. Auranofin promotes retinoic acid- or dihydroxyvitamin D3-mediated cell differentiation of promyelocytic leukaemia cells by increasing histone acetylation. Br J Pharmacol 2008; 154:1196-205. [PMID: 18500361 DOI: 10.1038/bjp.2008.197] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE To investigate the molecular mechanism for the effect of auranofin on the induction of cell differentiation, the cellular events associated with differentiation were analysed in acute promyelocytic leukaemia (APL) cells. EXPERIMENTAL APPROACH The APL blasts from leukaemia patients and NB4 cells were cotreated with auroanofin and all-trans-retinoic acid (ATRA) at suboptimal concentration. The HL-60 cells were treated with auroanofin and a subeffective dose of 1alpha,25-dihydroxyvitamin D3 (1,25(OH)2 vit D3) in combination. The effect of auroanofin was investigated on histone acetylation at the promoter of differentiation-associated genes and expression of cell cycle regulators. KEY RESULTS Treatment with auroanofin and ATRA cooperatively induced granulocytic differentiation of fresh APL blasts isolated from patients and NB4 cells. The combined treatment also increased reorganization of nuclear PML bodies and histone acetylation at the promoter of the RARbeta2 gene. Auroanofin also promoted monocytic differentiation of the HL-60 cells triggered by subeffective concentration of 1,25(OH)2 vit D3. The combined treatment of auroanofin and 1,25(OH)2 vit D3 stimulated histone acetylation at p21 promoters and increased the accumulation of cells in the G0/G1 phase. Consistent with this, the expressions of p21, p27 and PTEN were increased and the levels of cyclin A, Cdk2 and Cdk4 were decreased. Furthermore, the hypophosphorylated form of pRb was markedly increased in cotreated cells. CONCLUSIONS AND IMPLICATIONS These findings indicate that auroanofin in combination with low doses of either ATRA or 1,25(OH)2 vit D3 promotes APL cell differentiation by enhancing histone acetylation and the expression of differentiation-associated genes.
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Affiliation(s)
- S J Park
- 1Department of Natural Sciences, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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Seo JA, Kim NH, Park SY, Kim HY, Ryu OH, Lee KW, Lee J, Kim DL, Choi KM, Baik SH, Choi DS, Kim SG. Serum retinol-binding protein 4 levels are elevated in non-alcoholic fatty liver disease. Clin Endocrinol (Oxf) 2008; 68:555-60. [PMID: 17941908 PMCID: PMC2344088 DOI: 10.1111/j.1365-2265.2007.03072.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Retinol-binding protein 4 (RBP4) is a recently identified adipokine that is elevated in the serum in several insulin-resistant states. We investigated the relationship between non-alcoholic fatty liver disease (NAFLD) and serum RBP4 in nondiabetic adults. METHODS One hundred and fifty-nine nondiabetic, non-alcoholic subjects (95 males and 64 females) participated in this study. Division of subjects into a NAFLD group (n = 73; 45 males and 28 females) or a normal group (n = 86; 50 males and 36 females) was based on the presence of fatty liver disease determined by sonography. RESULTS Serum RBP4 levels in the NAFLD group were significantly higher than those in the normal group (62.8 +/- 16.0 mg/l vs. 51.7 +/- 14.6 mg/l, P < 0.0001). Multiple logistic regression analysis revealed that the RBP4 level was an independent factor associated with NAFLD (P = 0.0042). In addition, serum RBP4 levels were positively correlated with serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyltranspeptidase (GGT) levels. The significant association between serum RBP4 and GGT levels remained even after adjusting for age, gender, body mass index, the homeostasis model of assessment (HOMA) value and the presence of NAFLD (r = 0.3097, P = 0.0002). CONCLUSION Serum RBP4 levels are significantly associated with NAFLD and liver enzymes.
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Affiliation(s)
- J A Seo
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Korea University, Seoul, Korea.
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Lee EM, Kim NH, Trang NT, Hong JH, Cha EJ, Lee TS. Respiratory rate detection algorithms by photoplethysmography signal processing. Annu Int Conf IEEE Eng Med Biol Soc 2008; 2008:1140-1143. [PMID: 19162865 DOI: 10.1109/iembs.2008.4649362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Photoplethysmography (PPG) offers the clinically meaningful parameters, such as, heart rate, and respiratory rate. In this study, we presented three respiratory signal detection algorithms using photoplethysmography raw data generated from commercial PPG sensor: (1)Min-Max (2)Peak-to-Peak (3)Pulse Shape. As reference signal, nasal sensor signal was acquired simultaneously and compared and analyzed. We used two types of moving average filtering technique to process three PPG parameters. In laboratory experiment, 6 subjects' PPG signals were measured when they respire ten and fifteen, and arbitrary times per minute. From the results, following conclusions were drawn. Min-Max and Peak-to-Peak algorithms perform better than Pulse shape algorithm. They can be used to detect respiratory rate. But, Pulse Shape algorithm was accurate for subject 4 only. More experimental data is necessary to improve the accuracy and reliability.
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Affiliation(s)
- E M Lee
- Department of Biomedical Engineering, College of Medicine, Chungbuk National University, Cheongju, South Korea.
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Lee HS, Yin XJ, Jin YX, Kim NH, Cho SG, Bae IH, Kong IK. Germinal vesicle chromatin configuration and meiotic competence is related to the oocyte source in canine. Anim Reprod Sci 2008; 103:336-47. [PMID: 17212978 DOI: 10.1016/j.anireprosci.2006.12.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 08/29/2006] [Revised: 12/05/2006] [Accepted: 12/12/2006] [Indexed: 11/25/2022]
Abstract
This study investigated the effect of deriving oocytes from different stages of the estrous cycle on oocyte diameter, germinal vesicle (GV) chromatin configuration, and in vitro meiotic competence in canine oocytes. Cumulus oocyte complexes (COCs) were recovered from both ovaries during anestrous, follicular, and luteal phases and in vivo ovulated oocytes. The diameter of canine oocyte was compared with or without the zona pellucida (ZP) before in vitro maturation (IVM). Also, GV chromatin configuration was evaluated before (0 h) or 72 h after IVM by fixation with 3.7% formaldehyde supplemented with 10 microg/ml Hoechst 33342 for 30 min. COCs were matured in TCM199 supplemented with 10% fetal bovine serum (FBS), 0.6 mM cysteine, 0.2 mM pyruvic acid, 50 microg/ml gentamycin sulfate, and 20 microg/ml 17beta-estradiol (E(2)) at 39 degrees C and 5% CO(2) in air for 72 h. The diameter of in vivo ovulated oocytes with the ZP (167.5+/-12.7 microm) or without ZP (133.9+/-5.3 microm) was significantly greater (p<0.05) than those of anestrous, follicular, and luteal oocytes (with ZP, 151.2+/-7.4, 153.1+/-8.8 and 152.8+/-5.4 microm, respectively; without ZP, 115.3+/-7.6, 122.1+/-4.9 and 114.3+/-6.6 microm, respectively). At 0 h, the GV-II configuration was more prevalent in oocytes from anestrual ovaries than from follicular or luteal ovaries or in vivo ovulated oocytes (63.6% versus 14.8%, 33.0%, and 0.0%; p<0.05), whereas the proportion of oocytes with the GV-V configuration was higher in follicular phase and ovulated oocytes than in oocytes from anestrus and luteal phase (57.4% and 100% versus 2.0% and 22.7%; p<0.05). However, oocytes in luteal phase exhibited diverse GV configurations (10.3%, 33.0%, 16.5%, 13.4%, and 22.7% in GV-I, GV-II, GV-III, GV-IV, and GV-V, respectively). After 72 h post-IVM, a greater percentage of in vivo ovulated oocytes progressed to MII than those oocytes collected during anestrous, follicular, and luteal phases (50.0% versus 5.5%, 11.5%, and 9.1%; p<0.05). In conclusion, the oocyte diameter, GV chromatin configuration, and meiotic maturation of canine COCs are related to the oocyte source. These results indicated that the oocyte source could be critical to nuclear progression to MII stage in canines.
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Affiliation(s)
- H S Lee
- Department of Animal Science & Technology, Sunchon National University, 315 Maegok-dong, Suncheon, JeonNam Province 540-742, South Korea
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Choi KM, Ryu OH, Lee KW, Kim HY, Seo JA, Kim SG, Kim NH, Choi DS, Baik SH. Serum adiponectin, interleukin-10 levels and inflammatory markers in the metabolic syndrome. Diabetes Res Clin Pract 2007; 75:235-40. [PMID: 16872712 DOI: 10.1016/j.diabres.2006.06.019] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Accepted: 06/19/2006] [Indexed: 10/24/2022]
Abstract
We examined the association between interleukin-10 (IL-10), adiponectin levels and inflammatory markers such as interleukin-6 (IL-6) and high-sensitive C-reactive protein (hsCRP). Furthermore, the association of these anti-/pro-inflammatory cytokine levels with the metabolic syndrome was investigated. The study subjects were composed of 312 Korean individuals without diabetes. Serum adiponectin level was associated with hsCRP (r=-0.21, P<0.001), IL-6 (r=-0.13, P<0.05) and IL-10 (r=-0.22, P<0.001) levels. Subjects without the metabolic syndrome showed higher adiponectin (17.03 microg/ml versus 13.85 microg/ml, P<0.001) and IL-10 (4.74 pg/ml versus 4.34 pg/ml, P=0.014) levels, and lower serum hsCRP (0.38 microg/ml versus 0.66 microg/ml, P=0.001) and IL-6 (0.94 pg/ml versus 1.32 pg/ml, P=0.009) levels compared to those with the metabolic syndrome. In multiple logistic regression analysis, the metabolic syndrome was associated with sex, age, waist circumference, systolic blood pressure, HDL cholesterol, triglyceride, fasting blood glucose and interleukin-10. Furthermore, serum adiponectin levels are associated with serum hsCRP, IL-6 and IL-10 levels. These results suggest that adiponectin might be associated with the metabolic syndrome through regulation of pro-/anti-inflammatory cytokines.
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Affiliation(s)
- K M Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
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Oh JY, Lim S, Kim DJ, Kim NH, Kim DJ, Moon SD, Jang HC, Cho YM, Song KH, Park KS. The diagnosis of diabetes mellitus in Korea: a pooled analysis of four community-based cohort studies. Diabet Med 2007; 24:217-8. [PMID: 17257287 DOI: 10.1111/j.1464-5491.2007.02051.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yin XJ, Lee YH, Jin JY, Kim NH, Kong IK. Nuclear and microtubule remodeling and in vitro development of nuclear transferred cat oocytes with skin fibroblasts of the domestic cat (Felis silvestris catus) and leopard cat (Prionailurus bengalensis). Anim Reprod Sci 2006; 95:307-15. [PMID: 16310987 DOI: 10.1016/j.anireprosci.2005.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 07/28/2005] [Revised: 10/21/2005] [Accepted: 10/21/2005] [Indexed: 11/19/2022]
Abstract
The leopard cat (Prionailurus bengalensis), a member of the felidae family, is a threatened animal in South Korea. In terms of protecting endangered felids, nuclear transfer (NT) is a potentially valuable technique for assuring the continuation of species with dwindling numbers. In the present experiment, nuclear and microtubule remodeling and the in vitro developmental potential of enucleated domestic cat oocytes reconstructed with nuclei of somatic cells from either domestic cat fibroblast (DCF) or leopard cat fibroblast (LCF) were evaluated. Microtubule aster is allocated to de-condensed chromatin following nuclear transfer (3h after activation) of fibroblast cells from both domestic and leopard cats, suggesting the introduction of a somatic cell centrosome. The transferred fibroblast nuclei formed a large, swollen, pronuclear-like structure in most reconstructed oocytes, in the cat or leopard cat. At 18h following nuclear transfer, mitosis occurred, and according to the photo (F) it appears that spindle microtubules and two asters were observed. The percentages of blastocyst formation from nuclear transfer embryos derived from domestic cat fibroblasts (4/46, 8.6%) were not significantly different than those for nuclear transfer embryos constructed with leopard cat fibroblasts (4/52, 7.6%). These results indicate that nuclear and microtubule remodeling processes and in vitro developmental ability are similar in reconstructed cat oocytes following transfer of nuclei from either domestic or leopard cats.
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Affiliation(s)
- X J Yin
- Department of Animal Science and Technology, Sunchon National University, 315 Maegok-dong, Sunchon, JeonNam Province 540-742, South Korea
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Kim SJ, Jeong HJ, Kim BK, Kim NH, Kim JS, Choi KS, Lee HJ, Kang ST, Shin SS, Kim WI, Eom HS, Lee KM, Um JY, Hong SH, Kim HM. Anti-inflammatory effect of jeongshintang through suppression of p38 activation in human astrocytoma, U373MG cells. Exp Mol Pathol 2006; 81:85-91. [PMID: 16698013 DOI: 10.1016/j.yexmp.2005.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Revised: 11/18/2005] [Accepted: 12/01/2005] [Indexed: 01/22/2023]
Abstract
Jeongshintang (JST) is a Korean herbal prescription, which has been successfully used for cerebral diseases. However, the anti-inflammatory effect of JST on Alzheimer's disease (AD) is still not fully understood. In this study, we investigated the effects of JST in attenuating the inflammatory response induced by interleukin (IL)-1beta plus beta-amyloid [1-42] fragment (A beta) in the human astrocyte cell line, U373MG. The production of IL-6, IL-8, and prostaglandin (PG)E2 was significantly increased by IL-1beta plus A beta (1-42) in a time-dependent manner (P < 0.05). JST significantly inhibited the IL-1beta plus A beta (1-42)-induced IL-6, IL-8, and PGE2 production at 24 h (P < 0.05). Maximal inhibition rate of IL-6, IL-8, and PGE2 production by JST was about 54.40%, 56.01%, and 44.06% respectively. JST (0.01-1 mg/ml) also attenuated the expression of cyclooxygenase (COX)-2 and activation of p38 MAPK induced by IL-1beta and A beta (1-42). These results demonstrated that JST has an anti-inflammatory effect, which might explain its beneficial effect in the treatment of various neurodegenerative diseases such as AD.
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Affiliation(s)
- S J Kim
- College of Oriental Medicine, Kyung Hee University, 1 Hoegi-Dong, Dongdaemun-Gu, Seoul 130-701, Republic of Korea
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Ryu OH, Lee J, Lee KW, Kim HY, Seo JA, Kim SG, Kim NH, Baik SH, Choi DS, Choi KM. Effects of green tea consumption on inflammation, insulin resistance and pulse wave velocity in type 2 diabetes patients. Diabetes Res Clin Pract 2006; 71:356-8. [PMID: 16169629 DOI: 10.1016/j.diabres.2005.08.001] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2005] [Accepted: 08/13/2005] [Indexed: 01/01/2023]
Abstract
In this study, we examined the effects of green tea on inflammation and arterial stiffness in type 2 diabetes patients. As results, inflammatory markers, such as hsCRP and IL-6, were unchanged after green tea consumption, and neither were blood glucose, lipid profiles, insulin resistance, or serum adiponectin levels. Furthermore, tea consumption did not improve baPWV. These results suggest that the above-described mechanisms are unlikely to explain the cardiovascular risk reduction by tea consumption observed in epidemiological studies.
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Affiliation(s)
- O H Ryu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University Guro Hospital, 80 Guro-Dong, Guro-Gu, Seoul 152-050, South Korea
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Kim SM, Lee J, Ryu OH, Lee KW, Kim HY, Seo JA, Kim SG, Kim NH, Baik SH, Choi DS, Choi KM. Serum osteoprotegerin levels are associated with inflammation and pulse wave velocity. Clin Endocrinol (Oxf) 2005; 63:594-8. [PMID: 16268814 DOI: 10.1111/j.1365-2265.2005.02390.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
OBJECTIVE We examined the association between serum osteoprotegerin (OPG) levels, systemic inflammation and arterial stiffness in normal and diabetic patients. PATIENTS AND MEASUREMENTS The study subjects comprised 49 newly diagnosed diabetic patients and 72 age- and sex-matched normal glucose controls. Anthropometric parameters, blood pressure, fasting blood glucose (FBG), lipid profiles, serum OPG, high-sensitive C-reactive protein (hsCRP), interleukin-6 (IL-6) and brachial-ankle pulse wave velocity (baPWV) were measured. RESULTS Serum OPG levels (6.1 +/- 1.4 vs. 5.4 +/- 1.3 pmol/l, P = 0.011) and baPWV (1562 +/- 354 vs. 1399 +/- 257 cm/s, P = 0.004) were significantly higher in the diabetic group than in the normal glucose group. Serum OPG levels in normal and diabetic patients correlated significantly with systolic blood pressure (r = 0.20, P = 0.035), FBG (r = 0.30, P = 0.002), right baPWV (r = 0.22, P = 0.021), left baPWV (r = 0.26, P = 0.006), homeostasis model assessment insulin resistance (HOMA-IR) (r = 0.19, P = 0.045), IL-6 (r = 0.32, P = 0.001) and hsCRP (r = 0.21, P = 0.027) after adjusting for age and sex. Multiple regression analysis showed that serum OPG level was significantly associated with age, FBG, IL-6, systolic blood pressure, triglyceride and hsCRP (R(2) = 0.299). CONCLUSIONS In summary, serum OPG and baPWV levels are elevated in diabetic patients and serum OPG levels are significantly associated with inflammation and arterial stiffness.
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Affiliation(s)
- S M Kim
- Department of Family Medicine, Korea University College of Medicine, Seoul
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Choi KM, Lee KW, Kim HY, Seo JA, Kim SG, Kim NH, Choi DS, Baik SH. Association among serum ferritin, alanine aminotransferase levels, and metabolic syndrome in Korean postmenopausal women. Metabolism 2005; 54:1510-4. [PMID: 16253641 DOI: 10.1016/j.metabol.2005.05.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2005] [Accepted: 05/11/2005] [Indexed: 12/20/2022]
Abstract
We examined the relationships among serum ferritin, alanine aminotransferase (ALT) levels, and cardiovascular risk factors of metabolic syndrome in Korean postmenopausal women. We conducted a cross-sectional study of 959 postmenopausal women without an apparent cause of liver disease. Metabolic syndrome was defined as the presence of at least 3 of the following: elevated blood pressure, low high-density lipoprotein cholesterol, elevated serum triglycerides, elevated plasma glucose, and abdominal obesity. Serum ferritin and ALT levels were found to be correlated (r=0.374, P<.001) and to be associated with the components of metabolic syndrome. Subjects with metabolic syndrome showed significantly higher serum ferritin (74.7+/- 2.0 vs 59.6+/- 2.0 ng/mL, P<.001) and ALT levels (21.3+/-1.6 vs 18.7+/-1.5 IU/L, P<.001). Moreover, the greater the number of metabolic syndrome components present, the higher were the serum ferritin and ALT levels (P<.001). Multiple regression analysis showed that serum ALT levels are significantly associated with serum ferritin levels, waist circumference, fasting blood glucose, age, and white blood cell count (adjusted R(2)=0.147). Elevated iron stores were positively associated with serum ALT levels and metabolic syndrome in Korean postmenopausal women.
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Affiliation(s)
- K M Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University Guro Hospital, Seoul 152-050, Korea
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Choi KC, Ryu OH, Lee KW, Kim HY, Seo JA, Kim SG, Kim NH, Choi DS, Baik SH, Choi KM. Effect of PPAR-α and -γ agonist on the expression of visfatin, adiponectin, and TNF-α in visceral fat of OLETF rats. Biochem Biophys Res Commun 2005; 336:747-53. [PMID: 16157299 DOI: 10.1016/j.bbrc.2005.08.203] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [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: 08/12/2005] [Accepted: 08/26/2005] [Indexed: 11/15/2022]
Abstract
A variety of adipocytokines and peptides secreted from adipocytes have been considered to play a crucial role in obesity, insulin resistance, and type 2 diabetes. Recently, visfatin, a new adipocytokine, known as a pre-B cell colony-enhancing factor, has been isolated from visceral fat deposits. It has been shown to activate insulin receptors in a manner different from insulin. To understand the role of adipocytokines in improving insulin sensitivity via activation of the nuclear receptor peroxisome proliferator-activated receptor-alpha (PPAR-alpha) and -gamma (PPAR-gamma), we examined the expression of visfatin, adiponectin, and TNF-alpha in visceral fat depots of Otsuka Long-Evans Tokushima fatty (OLETF) rats from early to advanced diabetic stage (from 28 to 40 weeks of age). Serum glucose and insulin concentrations significantly (P<0.05) decreased in rosiglitazone or fenofibrate-treated OLETF rats compared to untreated OLETF rats. Rosiglitazone significantly increased serum adiponectin concentration from 20 to 40 weeks of age (P<0.05), whereas fenofibrate reduced TNF-alpha concentration. The expression of visfatin and adiponectin mRNA in visceral fat deposits was elevated by rosiglitazone or fenofibrate treatments when compared to untreated OLETF rats (P<0.05), whereas, TNF-alpha mRNA was down-regulated by these drugs (P<0.05). These results suggest that rosiglitazone and fenofibrate may prevent type 2 diabetes by regulating adipocytokines including visfatin, adiponectin, and TNF-alpha.
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Affiliation(s)
- K C Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Korea University, Seoul 152-050, Republic of Korea
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Kim SG, Kim HY, Seo JA, Lee KW, Oh JH, Kim NH, Choi KM, Baik SH, Choi DS. Relationship between serum adiponectin concentration, pulse wave velocity and nonalcoholic fatty liver disease. Eur J Endocrinol 2005; 152:225-31. [PMID: 15745930 DOI: 10.1530/eje.1.01842] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES We aimed to investigate the relationship between nonalcoholic fatty liver disease (NAFLD), serum adiponectin concentration and brachial-ankle pulse wave velocity (baPWV) as a risk marker for atherosclerosis. METHODS A total of 213 nonalcoholic subjects (67 males, 146 females) participated in this study. Division of subjects into the NAFLD group or the normal group was based on the existence of fatty liver detected by sonography. RESULTS Serum adiponectin levels in the NAFLD group were significantly lower than those in the normal group. After adjusting for age, body-mass index (BMI) and the homeostasis model of assessment (HOMA), there was a significant negative correlation between NAFLD and serum adiponectin level only in females (r = -0.22, P = 0.008). Multiple logistic regression analysis showed a tendency of inverse correlation between NAFLD and serum adiponectin level in females (P = 0.055). After adjustment for age, BMI and HOMA value, serum adiponectin levels were inversely correlated with serum alanine aminotransferase (ALT) and gamma-glutamyltranspeptidase (GGT) levels (r = -0.199 (P = 0.004) and r = -0.282 (P < 0.001)). On the other hand, baPWV in the NAFLD group was also significantly higher than that in the normal group in females (P = 0.005). Individual levels of serum ALT, aspatate aminotransferase (AST), alkaline phosphatase (ALP) and GGT were positively correlated with baPWV after adjusting for age, sex, BMI, HOMA and systolic blood pressure (P < 0.05). CONCLUSION Serum adiponectin level and baPWV were significantly associated with NAFLD and various liver enzymes, especially in females.
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Affiliation(s)
- S G Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Korea University, Seoul, South Korea
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Cha DR, Kim IS, Kang YS, Han SY, Han KH, Shin C, Ji YH, Kim NH. Urinary concentration of transforming growth factor-beta-inducible gene-h3(beta ig-h3) in patients with Type 2 diabetes mellitus. Diabet Med 2005; 22:14-20. [PMID: 15606685 DOI: 10.1111/j.1464-5491.2004.01295.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS The expression of TGF beta-inducible gene h3(beta ig-h3) has been used to assess the biological activity of TGF beta in the kidney. In this study, we investigated whether the urinary concentration of beta ig-h3 is associated with diabetic nephropathy in patients with Type 2 diabetes mellitus. We also evaluated the relationship between the urinary concentration of beta ig-3 and proteinuria and microalbuminuria (AER) in a normal healthy population and in Type 2 diabetes patients. METHODS Four hundred and seventy-nine Type 2 diabetic patients without non-diabetic kidney diseases and 528 healthy control subjects were enrolled. The study subjects were divided into five groups: a non-diabetic healthy control group with normal ACR (n = 443), a non-diabetic healthy control group with microalbuminuria (n = 85), a normoalbuminuric diabetic group (n = 198), a microalbuminuric diabetic group (n = 155) and an overt proteinuria group (n = 126). Urinary levels of beta ig-h3 were measured by enzyme-linked immunosorbent assay. RESULTS (i) Urinary excretion of beta ig-h3 was significantly higher in the diabetic groups than in the controls, even in the normoalbuminuric stage (25.02 +/- 8.84 vs. 18.67 +/- 6.56, P = 0.03). In diabetic patients, urinary beta ig-h3 levels increased significantly as diabetic nephropathy advanced (25.02 +/- 8.84 vs. 34.06 +/- 24.55 vs. 169.63 +/- 57.33, P < 0.001). (ii) Proteinuria was found to be significantly correlated with urinary beta ig-h3 (healthy control; r = 0.137, P = 0.019, diabetic patients; r = 0.604, P < 0.001). ACR was also found to be significantly related with urinary beta ig-h3 in diabetic patients (r = 0.383, P = 0.006). (iii) In diabetic patients, urinary beta ig-h3 was significantly related with systolic and diastolic blood pressure (systolic blood pressure: r = 0.436, P = 0.024; diastolic blood pressure, r = 0.365, P = 0.042), total cholesterol and HbA(1c) (cholesterol: r = 0.169, P = 0.03, HbA(1c); r = 0.387, P = 0.044). Logistic regression analyses showed that urinary beta ig-h3 was associated with a significant increase in the risk of microalbuminuria and proteinuria in diabetic patients. CONCLUSIONS Longitudinal monitoring of urinary beta ig-h3 may improve the likelihood of detecting diabetic nephropathy at an earlier stage and beta ig-h3 could be a sensitive marker of diabetic kidney disease progression.
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Affiliation(s)
- D R Cha
- Department of Internal Medicine, Korea University Hospital, Daegu, Korea
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Choi KM, Lee KW, Kim SG, Kim NH, Park CG, Seo HS, Oh DJ, Choi DS, Baik SH. Inflammation, insulin resistance, and glucose intolerance in acute myocardial infarction patients without a previous diagnosis of diabetes mellitus. J Clin Endocrinol Metab 2005; 90:175-80. [PMID: 15509644 DOI: 10.1210/jc.2004-1795] [Citation(s) in RCA: 42] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
We examined the prevalence of impaired glucose metabolism and its association with inflammation and insulin resistance (IR) in acute myocardial infarction (AMI) patients without a previous diagnosis of diabetes. This prospective study enrolled 52 AMI patients, and 75-g oral glucose tolerance testing was performed on 30 patients at discharge and again 3 months later. We also measured serum adiponectin, high sensitive C-reactive protein, and IL-6 on both occasions. Data were compared with those of 30 type 2 diabetic patients without a history of AMI. Forty percent and 36.7% of AMI patients had impaired glucose tolerance (IGT) at discharge and at 3 months, respectively. The corresponding proportions for newly diagnosed diabetes are 33.0% and 30.0%. At discharge, AMI patients with IGT or diabetes showed higher high sensitive C-reactive protein and IL-6 levels compared with AMI patients with normal glucose tolerance or control type 2 diabetic patients. Furthermore, AMI patients with IGT or diabetes exhibited higher IR and lower serum adiponectin levels than AMI patients with normal glucose tolerance at 3 months after discharge. Previously undiagnosed diabetes and IGT are common in Korean patients with AMI. These glycometabolic abnormalities are associated with inflammation, IR, and serum adiponectin levels.
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Affiliation(s)
- K M Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Korea University, 80 Guro-Dong, Guro-Gu, Seoul 152-050, Korea.
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