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Cho E, Mun SJ, Kim HK, Ham YS, Gil WJ, Yang CS. Colon-targeted S100A8/A9-specific peptide systems ameliorate colitis and colitis-associated colorectal cancer in mouse models. Acta Pharmacol Sin 2024; 45:581-593. [PMID: 38040838 PMCID: PMC10834475 DOI: 10.1038/s41401-023-01188-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/29/2023] [Indexed: 12/03/2023] Open
Abstract
The link between chronic inflammation and cancer development is well acknowledged. Inflammatory bowel disease including ulcerative colitis and Crohn's disease frequently promotes colon cancer development. Thus, control of intestinal inflammation is a therapeutic strategy to prevent and manage colitis-associated colorectal cancer (CRC). Recently, gut mucosal damage-associated molecular patterns S100A8 and S100A9, acting via interactions with their pattern recognition receptors (PRRs), especially TLR4 and RAGE, have emerged as key players in the pathogenesis of colonic inflammation. We found elevated serum levels of S100A8 and S100A9 in both colitis and colitis-associated CRC mouse models along with significant increases in their binding with PRR, TLR4, and RAGE. In this study we developed a dual PRR-inhibiting peptide system (rCT-S100A8/A9) that consisted of TLR4- and RAGE-inhibiting motifs derived from S100A8 and S100A9, and conjugated with a CT peptide (TWYKIAFQRNRK) for colon-specific delivery. In human monocyte THP-1 and mouse BMDMs, S100A8/A9-derived peptide comprising TLR4- and RAGE-interacting motif (0.01, 0.1, 1 μM) dose-dependently inhibited the binding of S100 to TLR4 or RAGE, and effectively inhibited NLRP3 inflammasome activation. We demonstrated that rCT-S100A8/A9 had appropriate drug-like properties including in vitro stabilities and PK properties as well as pharmacological activities. In mouse models of DSS-induced acute and chronic colitis, injection of rCT-S100A8/A9 (50 μg·kg-1·d-1, i.p. for certain consecutive days) significantly increased the survival rates and alleviated the pathological injuries of the colon. In AOM/DSS-induced colitis-associated colorectal cancer (CAC) mouse model, injection of rCT-S100A8/A9 (50 μg·kg-1·d-1, i.p.) increased the body weight, decreased tumor burden in the distal colon, and significantly alleviated histological colonic damage. In mice bearing oxaliplatin-resistant CRC xenografts, injection of rCT-S100A8/A9 (20 μg/kg, i.p., every 3 days for 24-30 days) significantly inhibited the tumor growth with reduced EMT-associated markers in tumor tissues. Our results demonstrate that targeting the S100-PRR axis improves colonic inflammation and thus highlight this axis as a potential therapeutic target for colitis and CRC.
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Affiliation(s)
- Euni Cho
- Department of Bionano Engineering, Hanyang University, Seoul, 04673, Republic of Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea
| | - Seok-Jun Mun
- Department of Bionano Engineering, Hanyang University, Seoul, 04673, Republic of Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea
| | - Hyo Keun Kim
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Republic of Korea
| | - Yu Seong Ham
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Republic of Korea
| | - Woo Jin Gil
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Republic of Korea
| | - Chul-Su Yang
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Republic of Korea.
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Republic of Korea.
- Department of Medicinal and Life Science, Hanyang University, Ansan, 15588, Republic of Korea.
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Lim CI, Choo HJ, Heo KN, Kim HK, Hassan MR, Sulatana S, Whiting IM, Mansbridge SC, Pirgozliev VR. Refining dietary metabolisable energy and crude protein levels in relation to duck performance and behaviour. Br Poult Sci 2024; 65:1-7. [PMID: 38047715 DOI: 10.1080/00071668.2023.2278482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/20/2023] [Indexed: 12/05/2023]
Abstract
1. The study evaluated the effect of dietary metabolisable energy (ME) content and crude protein (CP) level on the growth performance and behaviour of ducks.2. A total of 720, Cherry Valley ducks were allocated to 36 pens in groups of 20 birds. For the initial period, from 1 to 21 d age, six diets, containing a standard (SME), low (LME) and high (HME) ME of 12.14, 11.93 and 12.35 MJ/kg, and standard (SCP) or high (HCP) CP contents of 210 or 220 g/kg diet, respectively, were mixed. For the period from 22 to 42 d age, the diets contained ME of 12.98 (SME), 12.77 (LME), 13.19 (HME) MJ/kg and the levels of CP were 170 (SCP) or 180 (HCP) g/kg, respectively.3. An ME by CP interaction was seen from 1 to 21 d age in ducks fed HME + HCP diet, which had greater weight gain than those fed LME + SCP (P < 0.05). Compared to LME + SCP, dietary HME decrease feeding but increased walking behaviour compared to LME + SCP and SME + SCP (P < 0.05). High CP in LME and SME diets increased drinking behaviour (P < 0.05), but there was no change in HME diet. Compared to LME, feeding HME reduced ground pecking (P < 0.05). Feeding HME reduced feeding behaviour (P < 0.05) from 22 to 42 d age. During the same period, standing behaviour was reduced in HCP + LME (P < 0.05). Drinking was reduced in LME + SCP compared to SME + HCP and HME + HCP (P < 0.05).4. A diet formulated with HME and HCP is effective for enhancing growth performance of ducks aged 1-21 d and saving time for feeding or ground pecking, which may induce spending more time on other activities.
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Affiliation(s)
- C I Lim
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - H J Choo
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - K N Heo
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - H K Kim
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - M R Hassan
- Poultry Production Research Division, Bangladesh Livestock Research Institute, Savar, Bangladesh
| | - S Sulatana
- Poultry Production Research Division, Bangladesh Livestock Research Institute, Savar, Bangladesh
| | - I M Whiting
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
| | - S C Mansbridge
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
| | - V R Pirgozliev
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
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Cho E, Mun SJ, Jeon M, Kim HK, Baek H, Ham YS, Gil WJ, Kim JW, Yang CS. Tumor-targeted liposomes with platycodin D2 promote apoptosis in colorectal cancer. Mater Today Bio 2023; 22:100745. [PMID: 37576871 PMCID: PMC10415802 DOI: 10.1016/j.mtbio.2023.100745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/28/2023] [Accepted: 07/24/2023] [Indexed: 08/15/2023] Open
Abstract
Conventional chemotherapy for colorectal cancer (CRC), though efficacious, is discouraging due to its limited targeting capability, lack of selectivity, and chemotherapy-associated side effects. With the advent of nanomedicines, a liposomal delivery system making use of a combination of anticancer phytochemicals is fast gaining popularity as one of the most promising nanoplatforms for CRC treatment. Rising evidence supports phytochemicals such as platycosides for their anticancer potency. To this end, a combination therapy including tumor-targeted liposomes along with phytochemicals might have a greater therapeutic potential against cancer. In this study, we developed acidity-triggered rational membrane (ATRAM) along with conjugated platycodin D2 (PCD2) and liposomes (PCD2-Lipo-ATRAM) as a tumor-targeting therapy. The PCD2-Lipo-ATRAM treatment demonstrated a successful tumor-targeting ability in the CRC xenografts, in which PCD2 not only exerted a potent antitumor effect by inducing apoptotic cell death and but also functioned as a liposome membrane stabilizer. Moreover, PCD2-Lipo-ATRAM suppressed antiapoptotic BCL-2 family proteins, resulting in enhanced cytotoxicity toward CRC cells by inducing intrinsic caspase-9/-3 mediated apoptosis. Thus, our data has shown that tumor-targeting PCD2-based liposomal systems represent a promising strategy for CRC therapy, since they directly target the tumors, unlike other therapies that can miss the target.
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Affiliation(s)
- Euni Cho
- Department of Bionano Engineering Technology, Hanyang University, Seoul, 04673, South Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
| | - Seok-Jun Mun
- Department of Bionano Engineering Technology, Hanyang University, Seoul, 04673, South Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
| | - Minha Jeon
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Hyo Keun Kim
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, South Korea
| | - Hwira Baek
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Yu Seong Ham
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, South Korea
| | - Woo Jin Gil
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, South Korea
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Chul-Su Yang
- Center for Bionano Intelligence Education and Research, Ansan, 15588, South Korea
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, South Korea
- Department of Medicinal and Life Science, Hanyang University, Ansan, 15588, South Korea
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4
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Kim H, Kim HK, Hong D, Kim M, Jang S, Yang CS, Yoon S. Identification of ulcerative colitis-specific immune cell signatures from public single-cell RNA-seq data. Genes Genomics 2023:10.1007/s13258-023-01390-w. [PMID: 37133723 DOI: 10.1007/s13258-023-01390-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/13/2023] [Indexed: 05/04/2023]
Abstract
BACKGROUND Single-cell RNA-seq enabled microscopic studies on tissue microenvironment of many diseases. Inflammatory bowel disease, an autoimmune disease, is involved with various dysfunction of immune cells, for which single-cell RNA-seq may provide us a deeper insight into the causes and mechanism of this complex disease. OBJECTIVE In this work, we used public single-cell RNA-seq data to study tissue microenvironment around ulcerative colitis, an inflammatory bowel disease causing chronic inflammation and ulcers in large intestine. METHODS Since not all the datasets provide cell-type annotations, we first identified cell identities to select cell populations of our interest. Differentially expressed genes and gene set enrichment analysis was then performed to infer the polarization/activation state of macrophages and T cells. Cell-to-cell interaction analysis was also performed to discover distinct interactions in ulcerative colitis. RESULTS Differentially expressed genes analysis of the two datasets confirmed the regulation of CTLA4, IL2RA, and CCL5 genes in the T cell subset and regulation of S100A8/A9, CLEC10A genes in macrophages. Cell-to-cell interaction analysis showed CD4+ T cells and macrophages interact actively to each other. We also identified IL-18 pathway activation in inflammatory macrophages, evidence that CD4+ T cells induce Th1 and Th2 differentiation, and also found that macrophages regulate T cell activation through different ligand-receptor pairs, viz. CD86-CTL4, LGALS9-CD47, SIRPA-CD47, and GRN-TNFRSF1B. CONCLUSION Analysis of these immune cell subsets may suggest novel strategies for the treatment of inflammatory bowel disease.
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Affiliation(s)
- Hanbyeol Kim
- Dept of Computer Science, College of SW Convergence, Dankook Univ, Yongin-si, 16890, Korea
| | - Hyo Keun Kim
- Dept of Molecular and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, 15588, Korea
| | - Dawon Hong
- Dept of Molecular Biology, Graduate Department of Bioconvergence Engineering, Dankook University, Yongin-si, 16890, Korea
| | - Minsu Kim
- Dept of Computer Science, College of SW Convergence, Dankook Univ, Yongin-si, 16890, Korea
| | - Sein Jang
- Dept of Molecular and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, 15588, Korea
| | - Chul-Su Yang
- Dept of Medicinal/Molecular and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, 15588, Korea
| | - Seokhyun Yoon
- Dept of Electronics & Electrical Eng, College of Engineering, Dankook Univ, Yongin-si, 16890, Korea.
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5
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Kim JS, Kim HK, Lee J, Jang S, Cho E, Mun SJ, Yoon S, Yang CS. Inhibition of CD82 improves colitis by increasing NLRP3 deubiquitination by BRCC3. Cell Mol Immunol 2023; 20:189-200. [PMID: 36600050 PMCID: PMC9887069 DOI: 10.1038/s41423-022-00971-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
CD82 is a transmembrane protein that is involved in cancer suppression and activates immune cells; however, information on the NLRP3 inflammasome is limited. Herein, we show that although CD82 suppressed the activation of the NLRP3 inflammasome in vivo and in vitro, CD82 deficiency decreased the severity of colitis in mice. Furthermore, two binding partners of CD82, NLRP3 and BRCC3, were identified. CD82 binding to these partners increased the degradation of NLRP3 by blocking BRCC3-dependent K63-specific deubiquitination. Previous studies have shown that CD82-specific bacteria in the colon microbiota called Bacteroides vulgatus (B. vulgatus) regulated the expression of CD82 and promoted the activation of the NLRP3 inflammasome. Accordingly, we observed that B. vulgatus administration increased mouse survival by mediating CD82 expression and activating NLRP3 in mice with colitis. Overall, this study showed that CD82 suppression reduced the pathogenesis of colitis by elevating the activation of the NLRP3 inflammasome through BRCC3-dependent K63 deubiquitination. Based on our findings, we propose that B. vulgatus is a novel therapeutic candidate for colitis.
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Affiliation(s)
- Jae-Sung Kim
- Department of Bionano Technology, Hanyang University, Seoul, 04673, Korea
- Institute of Natural Science & Technology, Hanyang University, Ansan, 15588, Korea
| | - Hyo Keun Kim
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Korea
| | - Joongho Lee
- Department of Computer Science, College of SW Convergence, Dankook University, Yongin, 16890, Korea
| | - Sein Jang
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Korea
| | - Euni Cho
- Department of Bionano Technology, Hanyang University, Seoul, 04673, Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Korea
| | - Seok-Jun Mun
- Department of Bionano Technology, Hanyang University, Seoul, 04673, Korea
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Korea
| | - Seokhyun Yoon
- Department of Electronics & Electrical Engineering, College of Engineering, Dankook University, Yongin, 16890, Korea
| | - Chul-Su Yang
- Department of Molecular and Life Science, Hanyang University, Ansan, 15588, Korea.
- Center for Bionano Intelligence Education and Research, Ansan, 15588, Korea.
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6
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Lee Y, Kim S, Seo J, Kim HK, Han YP, Park EJ, Park JO, Yang CS, Kim JW. Fibroblast-targeting polymeric nanovehicles to enhance topical wound healing through promotion of PAR-2 receptor-mediated endocytosis. Biomater Sci 2023; 11:450-460. [PMID: 36448995 DOI: 10.1039/d2bm01357f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The level of collagen production critically determines skin wound contraction. If an intelligent skin drug delivery technology that enables collagen production in a specific wound skin area is developed, a breakthrough in wound healing treatment would be expected. However, such an intelligent drug delivery technology has not yet been developed as much as in the field of anticancer therapy. In this study, we propose a smart drug delivery system using polymeric nanovehicles (PNVs), in which the periphery is conjugated with a fibroblast-targeting collagen-derived peptide, KTTKS (Lys-Thr-Thr-Lys-Ser). We showed that surface engineering of PNVs with simultaneous PEGylation and peptide patching improved the dispersibility of PNVs, while promoting selective cellular uptake to fibroblasts via PAR-2 receptor-mediated endocytosis. In vitro collagen production and in vivo wound healing assays revealed that curcumin-loaded fibroblast-targeting PNVs significantly enhanced collagen production and wound healing activities, thus promising effective skin tissue regeneration.
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Affiliation(s)
- Yousong Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Seulgi Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Jihye Seo
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
| | - Hyo Keun Kim
- Department of Molecular & Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea.
| | - Yeong Pin Han
- Department of Molecular & Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea.
| | - Eun Ju Park
- Deabong Life Science Co., Incheon 21697, Republic of Korea
| | - Jin Oh Park
- Deabong Life Science Co., Incheon 21697, Republic of Korea
| | - Chul-Su Yang
- Department of Molecular & Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea.
| | - Jin Woong Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16149, Republic of Korea.
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Lee HJ, Park CS, Lee S, Park JB, Kim HK, Park SJ, Kim YJ, Lee SP. Systemic proinflammatory-profibrotic response in aortic stenosis patients with diabetes and its relationship with myocardial remodeling and clinical outcome. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1621] [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: 11/12/2022] Open
Abstract
Abstract
Background
It is unclear whether and how diabetes mellitus may aggravate myocardial fibrosis and remodeling in the pressure-overloaded heart. We investigated the impact of diabetes on the prognosis of aortic stenosis (AS) patients and its underlying mechanisms using comprehensive noninvasive imaging studies and plasma proteomics.
Methods
Severe AS patients undergoing both echocardiography and cardiovascular magnetic resonance (CMR) (n=253 of which 66 had diabetes) comprised the imaging cohort. The degree of replacement and diffuse interstitial fibrosis by late gadolinium enhancement (LGE) and extracellular volume fraction (ECV) was quantified using CMR. Plasma samples were analyzed with the multiplex proximity extension assay for 92 proteomic biomarkers in a separate biomarker cohort of severe AS patients (n=100 of which 27 had diabetes).
Results
In the imaging cohort, diabetic patients were older (70.4±6.8 vs. 66.7±10.1 years) and had a higher prevalence of ischemic heart disease (28.8% vs. 9.1%), with more advanced ventricular diastolic dysfunction. On CMR, diabetic patients had increased replacement and diffuse interstitial fibrosis (LGE% 0.3 [0.0–1.6] versus 0.0 [0.0–0.5], p=0.009; ECV% 27.9 [25.7–30.1] versus 26.7 [24.9–28.5], p=0.025) (Figure 1).
Plasma proteomics analysis of the biomarker cohort revealed that 9 proteins (E-selectin, interleukin-1 receptor type 1, interleukin-1 receptor type 2, galectin-4, intercellular adhesion molecule 2, integrin beta-2, galectin-3, growth differentiation factor 15, and cathepsin D) are significantly elevated in diabetic AS patients (Figure 2). Pathway over-representation analyses of the plasma proteomics with Gene Ontology terms indicated that pathways related to inflammatory response and extracellular matrix components were enriched, suggesting that diabetes is associated with systemic effects that evoke proinflammatory and profibrotic response to the pressure-overloaded myocardium.
During follow-up (median 6.3 years [IQR 5.2–7.2]) of the imaging cohort, 232 patients received aortic valve replacement (AVR) with 53 unexpected heart failure admissions or death. Diabetes was a significant predictor of heart failure and death, independent of clinical covariates and AVR (hazard ratio 1.88, 95% confidence interval 1.06–3.31, p=0.030).
Conclusion
Plasma proteomic analyses indicate that diabetes potentiates the systemic proinflammatory and profibrotic milieu in AS patients. These systemic biological changes underlie the increase of myocardial fibrosis, diastolic dysfunction, and worse clinical outcomes in severe AS patients with concomitant diabetes.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): National Research Foundation of Korea
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Affiliation(s)
- H J Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - C S Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S Lee
- Asan Medical Center, Internal Medicine , Seoul , Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiovascular Imaging Center , Seoul , Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
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8
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Yeung S, Kim HK, Carleton A, Munro J, Ferguson D, Monk AP, Zhang J, Besier T, Fernandez J. Integrating wearables and modelling for monitoring rehabilitation following total knee joint replacement. Comput Methods Programs Biomed 2022; 225:107063. [PMID: 35994872 DOI: 10.1016/j.cmpb.2022.107063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/24/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVE Wearable inertial devices integrated with modelling and cloud computing have been widely adopted in the sports sector, however, their use in the health and medical field has yet to be fully realised. To date, there have been no reported studies concerning the use of wearables as a surrogate tool to monitor knee joint loading during recovery following a total knee joint replacement. The objective of this study is to firstly evaluate if peak tibial acceleration from wearables during gait is a good surrogate metric for computer modelling predicted functional knee loading; and secondly evaluate if traditional clinical patient related outcomes measures are consistent with wearable predictions. METHODS Following ethical approval, four healthy participants were used to establish the relationship between computer modelling predicted knee joint loading and wearable measured tibial acceleration. Following this, ten patients who had total knee joint replacements were then followed during their 6-week rehabilitation. Gait analysis, wearable acceleration, computer models of knee joint loading, and patient related outcomes measures including the Oxford knee score and range of motion were recorded. RESULTS A linear correlation (R2 of 0.7-0.97) was observed between peak tibial acceleration (from wearables) and musculoskeletal model predicted knee joint loading during gait in healthy participants first. Whilst patient related outcome measures (Oxford knee score and patient range of motion) were observed to improve consistently during rehabilitation, this was not consistent with all patient's tibial acceleration. Only those patients that exhibited increasing peak tibial acceleration over 6-weeks rehabilitation were positively correlated with the Oxford knee score (R2 of 0.51 to 0.97). Wearable predicted tibial acceleration revealed three patients with a consistent knee loading, five patients with improving knee loading, and two patients with declining knee loading during recovery. Hence, 20% of patients did not present with satisfactory joint loading following total knee joint replacement and this was not detected with current patient related outcome measures. CONCLUSIONS The use of inertial measurement units or wearables in this study provided additional insight into patients who were not exhibiting functional improvements in joint loading, and offers clinicians an 'off-site' early warning metric to identify potential complications during recovery and provide the opportunity for early intervention. This study has important implications for improving patient outcomes, equity, and for those who live in rural regions.
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Affiliation(s)
- S Yeung
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - H K Kim
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; School of Kinesiology, Louisiana State University, United States
| | - A Carleton
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - J Munro
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - D Ferguson
- Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - A P Monk
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - J Zhang
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - T Besier
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Department of Engineering Science, University of Auckland, Auckland, New Zealand
| | - J Fernandez
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Department of Engineering Science, University of Auckland, Auckland, New Zealand.
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9
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Kim JS, Kim HK, Cho E, Mun SJ, Jang S, Jang J, Yang CS. PE_PGRS38 Interaction With HAUSP Downregulates Antimycobacterial Host Defense via TRAF6. Front Immunol 2022; 13:862628. [PMID: 35572598 PMCID: PMC9095961 DOI: 10.3389/fimmu.2022.862628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/06/2022] [Indexed: 12/04/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) is the causative pathogen of tuberculosis (TB), which manipulates the host immunity to ensure survival and colonization in the host. Mtb possess a unique family of proteins, named PE_PGRS, associated with Mtb pathogenesis. Thus, elucidation of the functions of PE_PGRS proteins is necessary to understand TB pathogenesis. Here, we investigated the role of PE_PGRS38 binding to herpesvirus-associated ubiquitin-specific protease (HAUSP, USP7) in regulating the activity of various substrate proteins by modulating their state of ubiquitination. We constructed the recombinant PE_PGRS38 expressed in M. smegmatis (Ms_PE_PGRS38) to investigate the role of PE_PGRS38. We found that Ms_PE_PGRS38 regulated the cytokine levels in murine bone marrow-derived macrophages by inhibiting the deubiquitination of tumor necrosis factor receptor-associated factor (TRAF) 6 by HAUSP. Furthermore, the PE domain in PE_PGRS38 was identified as essential for mediating TRAF6 deubiquitination. Ms_PE_PGRS38 increased the intracellular burden of bacteria by manipulating cytokine levels in vitro and in vivo. Overall, we revealed that the interplay between HAUSP and PE_PGRS38 regulated the inflammatory response to increase the survival of mycobacteria.
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Affiliation(s)
- Jae-Sung Kim
- Department of Bionano Technology, Hanyang University, Seoul, South Korea.,Institute of Natural Science & Technology, Hanyang University, Ansan, South Korea
| | - Hyo Keun Kim
- Department of Molecular and Life Science, Hanyang University, Ansan, South Korea.,Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, South Korea
| | - Euni Cho
- Department of Bionano Technology, Hanyang University, Seoul, South Korea.,Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, South Korea
| | - Seok-Jun Mun
- Department of Bionano Technology, Hanyang University, Seoul, South Korea.,Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, South Korea
| | - Sein Jang
- Department of Molecular and Life Science, Hanyang University, Ansan, South Korea.,Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, South Korea
| | - Jichan Jang
- Molecular Mechanisms of Antibiotics, Division of Life Science, Research Institute of Life Science, Department of Bio & Medical Big Data (Brain Korea 21 Four Program), Gyeongsang National University, Jinju, South Korea
| | - Chul-Su Yang
- Department of Molecular and Life Science, Hanyang University, Ansan, South Korea.,Center for Bionano Intelligence Education and Research, Hanyang University, Ansan, South Korea
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10
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Lee D, Lee E, Jang S, Kim K, Cho E, Mun SJ, Son W, Jeon HI, Kim HK, Jeong YJ, Lee Y, Oh JE, Yoo HH, Lee Y, Min SJ, Yang CS. Discovery of Mycobacterium tuberculosis Rv3364c-Derived Small Molecules as Potential Therapeutic Agents to Target SNX9 for Sepsis. J Med Chem 2022; 65:386-408. [PMID: 34982557 DOI: 10.1021/acs.jmedchem.1c01551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The serine protease inhibitor Rv3364c of Mycobacterium tuberculosis (MTB) is highly expressed in cells during MTB exposure. In this study, we showed that the 12WLVSKF17 motif of Rv3364c interacts with the BAR domain of SNX9 and inhibits endosome trafficking to interact with p47phox, thereby suppressing TLR4 inflammatory signaling in macrophages. Derived from the structure of this Rv3364c peptide motif, 2,4-diamino-6-(4-tert-butylphenyl)-1,3,5-trazine, DATPT as a 12WLVSKF17 peptide-mimetic small molecule has been identified. DATPT can block the SNX9-p47phox interaction in the endosome and suppress reactive oxygen species and inflammatory cytokine production; it demonstrated significant therapeutic effects in a mouse model of cecal ligation and puncture-induced sepsis. DATPT has considerably improved potency, with an IC50 500-fold (in vitro) or 2000-fold (in vivo) lower than that of the 12WLVSKF17 peptide. Furthermore, DATPT shows potent antibacterial activities by reduction in ATP production and leakage of intracellular ATP out of bacteria. These results provide evidence for peptide-derived small molecule DATPT with anti-inflammatory and antibacterial functions for the treatment of sepsis.
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Affiliation(s)
- Daeun Lee
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea
| | - Eunbi Lee
- Department of Applied Chemistry, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Sein Jang
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Kyungmin Kim
- Department of Applied Chemistry, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Euni Cho
- Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea.,Department of Bionano Technology, Hanyang University, Seoul 04673, S. Korea
| | - Seok-Jun Mun
- Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea.,Department of Bionano Technology, Hanyang University, Seoul 04673, S. Korea
| | - Wooic Son
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Hye-In Jeon
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Hyo Keun Kim
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Young Jin Jeong
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
| | - Yuno Lee
- Korea Chemical Bank, Korea Research Institute of Chemical Technology, Daejeon 34114, S. Korea
| | - Ji Eun Oh
- Institute of Pharmaceutical Science and Technology and College of Pharmacy, Hanyang University, Ansan 15588, S. Korea
| | - Hye Hyun Yoo
- Institute of Pharmaceutical Science and Technology and College of Pharmacy, Hanyang University, Ansan 15588, S. Korea
| | - Youngbok Lee
- Department of Applied Chemistry, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea.,Department of Chemical & Molecular Engineering, Hanyang University, Ansan 15588, S. Korea
| | - Sun-Joon Min
- Department of Applied Chemistry, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea.,Department of Chemical & Molecular Engineering, Hanyang University, Ansan 15588, S. Korea
| | - Chul-Su Yang
- Department of Molecular and Life Science, Hanyang University, Ansan 15588, S. Korea.,Center for Bionano Intelligence Education and Research, Ansan 15588, S. Korea
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11
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Salih L, Sabaratnam R, Kim HK, Bevan K. 491 Comparison of Pandemic and Pre-pandemic Practices of Managing Acute Appendicitis. Br J Surg 2021. [PMCID: PMC8524536 DOI: 10.1093/bjs/znab259.466] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Aim Acute appendicitis (AA) is a common indication for abdominal surgery, with more than 30,000 appendicectomies performed in England per year. However, SARS-CoV-2 (COVID-19) changed usual surgical practices following advice to minimise laparoscopic surgery, and instead favouring conservative management, or open surgery for AA. Method In this study, we compared the management of 50 patients with suspected/confirmed AA during the first wave of the COVID-19 pandemic at a district general hospital (DGH) with our usual practices, against 50 patients admitted with suspected/confirmed AA during a similar time period, one year prior to the pandemic. Results Demographics of patients in both groups were comparable with median age of 34 in the pandemic vs 32.5 in the pre-pandemic group. 74% of patients in the pandemic group (PG) underwent imaging to confirm appendicitis, compared to 58% of patients in the pre-pandemic group (PPG). 64% of PG patients were treated conservatively, compared to 8% in PPG patients. Outcomes demonstrated re-attendance events of 12% in the PG, as compared to 10% in the PPG, although the follow up period was longer in the PPG. Despite a significantly smaller number of patients managed surgically during the pandemic, 27% of patients undergoing appendicectomies had post-operative complications in the PG, as compared to 7% in the PPG. Conclusions During the pandemic, more patients at our DGH with AA were treated conservatively, more patients had re-attendance events and post-operative complications when compared to patients in the pre-pandemic group.
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Affiliation(s)
- L Salih
- Bedford Hospital, Bedford, United Kingdom
| | | | - H K Kim
- Bedford Hospital, Bedford, United Kingdom
| | - K Bevan
- Bedford Hospital, Bedford, United Kingdom
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12
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Kim HK, Ku SY, Kim SH, Suh CS, Kim H. P–627 Optimal timing of day 6 blastocyst transfer in artificially prepared frozen-thawed embryo transfer cycles. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
When is the optimal timing of day 6 (D6) blastocyst transfer between the 6thday (P6)and the 7th(P7) day of progesterone administration in artificially prepared frozen-thawed embryo transfer(FET) cycle
Summary answer
When transferring D6 blastocysts in artificially prepared FET cycles, live birth rate tended to be higher in P6 group than in P7 group.
What is known already
Blastocyst transfer in FET cycles has increased due to several reasons including convenience for optimization of endometrial synchronization, improvement of laboratory techniques and preimplantation genetic testing. Meanwhile, D6 blastocyst which cryopreserved on day 6 after being developed to the full blastocyst stage, presented lower pregnancy outcomes in FET cycle than D5 blastocysts. However, there have been few studies on the optimal duration of progesterone administration when transferring D6 blastocysts.
Study design, size, duration
This was a retrospective cohort study including patients who underwent frozen-thawed blastocyst transfer in artificially prepared cycles from January 2000 to May 2020. Patients with D6 blastocyst transfer on the 6th day of progesterone administration were included in D6-P6 group, and patients with D6 blastocyst transfer on the 7th day of progesterone administration were included in D6-P7 group.
Participants/materials, setting, methods
Increasing dose of estradiol valerate was administered from the 3rd day of menstruation: 4 mg/day for the first four days, 6 mg/day for next four days, and then 8 mg/day until the confirmation of pregnancy. Progesterone was administered from the 14th day of menstruation if the endometrial thickness reached ≥7 mm. The independent t-test or Mann-Whitney test, chi-square test, and logistic regression analysis were performed.
Main results and the role of chance
A total of 50 patients were included, and 13 patients underwent FET on P6 and 37 patients underwent FET on P7. Live birth rate was comparable between the P6 group and the P7 group (18.9% vs. 15.4%, p = 0.775). Live birth rate was higher in the D6-P6 group than in the D6-P7 group after adjusting for age, AMH, endometrial thickness on the starting day of progesterone administration and good embryo rate transferred with statistical significance (OR: 6.716, p = 0.005).
Limitations, reasons for caution
Limitations of the present study is the retrospective design and the small sample size. Caution is needed in extrapolating results of this study because only intramural and vaginal progesterone supplementations were included in this study.
Wider implications of the findings: Even if the duration of blastocyst formation was delayed, frozen-thawed D6 blastocyst may need to be considered for on P6 rather than P7. The difference of live birth rate is not statistically significant. This study should be acknowledged for the underestimation of the difference because of the small sample size.
Trial registration number
Not applicable
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Affiliation(s)
- H K Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - S.-Y Ku
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - S H Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - C S Suh
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - H Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
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13
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Romano MR, Parolini B, Allegrini D, Michalewska Z, Adelman R, Bonovas S, Bopp S, Tekin K, Fiser I, Boon CJF, Dijk ECH, Donvito G, Güngel H, Özdoğan Erkul S, Ünsal E, Osmanbaşoğlu Ö, Dinçer N, Erçalık NY, Yenerel NM, Amar J, Ennemoser A, Besozzi G, Sallam AAB, Ellabban AA, Chang W, Eandi CM, Demir M, Lee J, Pak K, Arrevola L, Sloka A, Morawski K, Kulig ‐ Stochmal A, Romanowska ‐ Dixon B, Striebe N, Feltgen N, Hoerauf H, Inan UU, Tanev I, Dyrda A, Schüler A, Lucke K, Brix A, Pape S, Kusserow‐Napp C, Loo PA, Kanra AY, Ardagil Akçakaya A, Arı Yaylalı S, Bae SH, Kim HK, Kim SJ, Han JR, Nam WH, Odrobina D, Lavaque E, Bertelli E, Coser S, Ziemssen F, Forlini M, Benatti C, Cavallini GM, Stefanickova J, Berrod J, Saksonov S, Lytvinchuk L, Moussa M, Stefaniotou M, Christodoulou E, Zayed MA, Oz O, Tassinari P, Koch P, Declercq C, Johnston R, Rusnak S, Penas S, Ozdek S, Ucgul Y, Cisiecki S, Dziegielewski K, Klimczak D, Michalewska Z, Michalewski J, Nawrocka Z, Nawrocki J, Ornafel K, Pikulski Z, Maciej M, Acar N, Elshafei MM, Hamon F, Soyeur R, Badat I, Brousseau B, Hermouet E, Peiretti E, Lee J, Ferreira N, Yoon H, Alkhars WI, Dudani A, Minu R, Telang O, MorePatil VG, Furtado MJ, Jo Y, Piccolino FC, Finzi A. An international collaborative evaluation of central serous chorioretinopathy: different therapeutic approaches and review of literature. The European Vitreoretinal Society central serous chorioretinopathy study. Acta Ophthalmol 2020; 98:e549-e558. [PMID: 31808315 DOI: 10.1111/aos.14319] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 11/02/2019] [Indexed: 01/14/2023]
Abstract
PURPOSE To study and compare the efficacy of different therapeutic options for the treatment of central serous chorioretinopathy (CSCR). METHODS This is a nonrandomized, international multicentre study on 1719 patients (1861 eyes) diagnosed with CSCR, from 63 centres (24 countries). Reported data included different methods of treatment and both results of diagnostic examinations [fluorescein angiography and/or optical coherent tomography (OCT)] and best-corrected visual acuity (BCVA) before and after therapy. The duration of observation had a mean of 11 months but was extended in a minority of cases up to 7 years. The aim of this study is to evaluate the efficacy of the different therapeutic options of CSCR in terms of both visual (BCVA) and anatomic (OCT) improvement. RESULTS One thousand seven hundred nineteen patients (1861 eyes) diagnosed with CSCR were included. Treatments performed were nonsteroidal anti-inflammatory eye drops, laser photocoagulation, micropulse diode laser photocoagulation, photodynamic therapy (PDT; Standard PDT, Reduced-dose PDT, Reduced-fluence PDT), intravitreal (IVT) antivascular endothelial growth factor injection (VEGF), observation and other treatments. The list of the OTHERS included both combinations of the main proposed treatments or a variety of other treatments such as eplerenone, spironolactone, acetazolamide, beta-blockers, anti-anxiety drugs, aspirin, folic acid, methotrexate, statins, vitis vinifera extract medication and pars plana vitrectomy. The majority of the patients were men with a prevalence of 77%. The odds ratio (OR) showed a partial or complete resolution of fluid on OCT with any treatment as compared with observation. In univariate analysis, the anatomical result (improvement in subretinal fluid using OCT at 1 month) was favoured by age <60 years (p < 0.005), no previous observation (p < 0.0002), duration less than 3 months (p < 0.0001), absence of CSCR in the fellow eye (p = 0.04), leakage outside of the arcade (p = 0.05) and fluid height >500 μm (p = 0.03). The OR for obtaining partial or complete resolution showed that anti-VEGF and eyedrops were not statistically significant; whereas PDT (8.5), thermal laser (11.3) and micropulse laser (8.9) lead to better anatomical results with less variability. In univariate analysis, the functional result at 1 month was favoured by first episode (p = 0.04), height of subretinal fluid >500 μm (p < 0.0001) and short duration of observation (p = 0.02). Finally, there was no statistically significant difference among the treatments at 12 months. CONCLUSION Spontaneous resolution has been described in a high percentage of patients. Laser (micropulse and thermal) and PDT seem to lead to significant early anatomical improvement; however, there is little change beyond the first month of treatment. The real visual benefit needs further clarification.
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Affiliation(s)
- Mario R Romano
- Department of Ophthalmology, Gavazzeni - Castelli Hospital, Humanitas University, Rozzano, Italy
| | - Barbara Parolini
- Department of Ophthalmology, Istituto Clinico S. Anna, Brescia, Italy
| | - Davide Allegrini
- Department of Ophthalmology, Gavazzeni - Castelli Hospital, Humanitas University, Rozzano, Italy
| | | | - Ron Adelman
- Department of Ophthalmology, Yale University, New Haven, Connecticut, USA
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Silvia Bopp
- Department of Ophthalmology & Visual Science, Yale University School of Medicine, New Haven, Connecticut, USA
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Moon I, Lee SP, Kim MK, Park JB, Kim HK, Kim YJ, Sohn DW. P1274 Early surgery versus watchful waiting in patients with moderate aortic stenosis and left ventricular systolic dysfunction. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.724] [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
Aortic stenosis (AS) induces significant pressure overload to the left ventricle (LV) and its burden may increase if there is concomitant LV systolic dysfunction. Severe AS with LV systolic dysfunction is a class I indication for aortic valve replacement (AVR) irrespective of symptoms, however, this recommendation is not well established in those with moderate AS and LV systolic dysfunction. In this study, we sought to investigate the clinical impact of surgical AVR among patients with moderate AS and LV systolic dysfunction.
Methods
From 2001 to 2017, we retrospectively but consecutively identified patients with moderate AS and LV systolic dysfunction from a single tertiary hospital. Moderate AS was defined as aortic valve area between 1.0 and 1.5cm2 and LV systolic dysfunction as LV ejection fraction less than 50%. The primary outcome was all-cause death and we additionally analyzed cardiac death as a secondary endpoint. The outcomes were compared between those who underwent early surgical AVR at the stage of moderate AS versus those who were followed without AVR at the outpatient clinic.
Results
Among a total of 257 patients with moderate AS and concomitant LV systolic dysfunction (70.0 ± 11.3 years, 63.4% of male), 34 patients received early AVR. Patients in the AVR group was younger than the observation group (64.2 ± 8.1 vs. 70.9 ± 11.5, respectively), and had a lower prevalence of hypertension and chronic kidney disease. During a mean of 3-year follow up, 112 patients (47.5%) died and the overall death rate was 15.367 per 100 person-year (PY). The AVR group showed a significantly lower rate of all-cause death than the observation group (5.241PY vs. 18.160PY, p-value = 0.002). After multivariable Cox proportional hazard regression adjusting for age, sex, comorbidities and laboratory data, early AVR at the stage of moderate AS significantly reduced the risk of all-cause death (hazard ratio [HR] 0.340, 95% confidence interval [CI] 0.117 - 0.985, p-value = 0.047). However, there was no risk reduction of cardiac death (HR 0.578 95% CI 0.150 - 2.231, p-value = 0.426).
Conclusions
In patients with moderate AS and LV systolic dysfunction, AVR reduces the risk of all-cause death. A prospective design study is warranted to confirm our findings in the near future.
Abstract P1274 Figure. Kaplan-Meier curves for deaths
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Affiliation(s)
- I Moon
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - M K Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - D W Sohn
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
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15
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Kim HM, Kim HK, Lee JH, Park EA, Park JB, Lee SP, Kim YJ, Sohn DW, Lee YB, Kim YJ, Yoon JH. P1603 Changes of cardiac function in cirrhotic patients after liver transplantation. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1021] [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
Funding Acknowledgements
This study was supported by the grant of CJ healthcare 2016 research fund.
Background
Liver cirrhosis (LC) has been known to affect cardiovascular performance. Limited study have evaluated the alteration of myocardial function in patients with LC after liver transplantation (LT).
Purpose
The aim of study was to evaluate changes of cardiac function in patients with cirrhosis following LT using conventional and speckle-tracking echocardiography and late gadolinium enhancement (LGE) of cardiac magnetic resonance (MR).
Methods
Thirty-five patients with cirrhosis (mean age, 57.1 ± 9.0; male, 75%) who were listed for LT were prospectively enrolled. Patients underwent conventional, speckle-tracking echocardiography, and cardiac MR imaging with LGE. Echocardiography and cardiac MR were performed at pre and 1 year after LT. Cirrhotic patients were compared with normal control (n = 20, mean age, 65.0 ± 14.8; men, 11(55%)) and echocardiographic and cardiac MR data were compared pre and post LT.
Results
Conventional and speckle-tracking echocardiography and Cardiac MR imaging demonstrated hyperdynamic left ventricular (LV) function in patients with cirrhosis (LV ejection fraction (EF) with cardiac MR 67.8 ± 7.0% in LC vs. 63.4 ± 6.4% in control, P = 0.028; global longitudinal strain (GLS) -24.3 ± 2.6% in LC vs. -18.6 ± 2.2% in control, P < 0.001). There were no LGE in patients with cirrhosis and no significant differences in LV size, LV wall thickness, LV mass index, and diastolic function between cirrhotic patients and control group (all P > 0.1). Corrected QT interval (QTc) in electrocardiogram was prolonged in LC patients (P < 0.001). One-year after LT, LV end-diastolic diameter and LV end-diastolic volume significantly decreased (P = 0.016 and 0.022, respectively). Although LVEF showed no significant changes 1 year post-LT (P = 0.362), LV-GLS (from -24.7 ± 1.8% to -20.8 ± 3.4%, P < 0.001) significantly decreased. QTc interval also decreased 1 year after LT (from 470.4 ± 29.6msec to 428.2 ± 31.6msec, P = 0.001).
Conclusions
The present study demonstrated that cirrhotic patients showed hyperdynamic circulation and prolonged QTc interval compared with normal controls. After 1 year LT, LV size reduced and augmented LV function was normalized. Given that no LGE in cardiac MR and normalized GLS and QTc after LT, cardiac dysfunction in LC patients could be reversed by LT.
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Affiliation(s)
- H M Kim
- Mediplex Sejong Hospital, Incheon, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J H Lee
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - E A Park
- Seoul National University Hospital, Radiology, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D W Sohn
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y B Lee
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - J H Yoon
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
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16
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Hwang I, Lee JM, Park JB, Yoon YE, Lee SP, Kim HK, Kim YJ, Cho GY, Park SJ, Kim KH, Hong GR. P1368 Effect of angiotensin receptor blocker in patients with moderate or severe aortic stenosis: a randomized controlled trial. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.803] [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: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
This study was supported by grants from Boryung Pharmacy Research Fund.
Background/Introduction: Pathophysiology of aortic stenosis (AS) and several previous studies suggested the potential role of angiotensin receptor blocker (ARB) in patients with AS.
Purpose
We aimed to investigate the effects of Fimasartan, an ARB, on exercise capacity and progression of AS in patients with moderate to severe AS.
Methods
We conducted a prospective, randomized, double-blind, placebo-controlled trial in 32 normotensive or controlled-hypertensive patients with moderate or severe AS. Study participants were randomized to Fimasartan 30 mg to 60 mg daily (n = 14) or placebo (n = 18) for 1 year, and underwent cardiopulmonary exercise test, 6-minute walk test, and echocardiography at 0, 6, and 12 months, with follow-up data available in 29 subjects.
Results
Significant reductions in blood pressures were observed in the Fimasartan group but not in the placebo group. Two of the 14 patients in the Fimasartan group withdrew the study due to mild symptoms probably related with the decreased blood pressure, and one patient decline the study protocol. After the 12-month treatment, the peak oxygen consumption (VO2; the primary outcome) in the Fimasartan group was significantly decreased (from 28.3 ± 5.9 to 25.4 ± 3.8 mL/min/kg, P = 0.021) but not in the placebo group (P for interaction = 0.046) (Figure 1A). The severity of AS showed a gradual progression in both groups, without inter-group differences (mean transaortic pressure; Fimasartan group, +4.0 ± 3.8 mmHg/year; placebo group, +5.3 ± 6.2 mmHg/year; P for interaction = 0.429) (Figure 1B). Parameters of left ventricular systolic and diastolic function did not change in both groups.
Conclusions
The use of ARB impaired exercise capacity in patients with moderate or severe AS, and did not prevent the progression of AS. However, due to the small number of participants, further studies are required to confirm these findings.
Abstract P1368 Figure.
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Affiliation(s)
- I Hwang
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - J M Lee
- Samsung Medical Center, Cardiovascular Center, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - Y E Yoon
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - G Y Cho
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiovascular Center, Seoul, Korea (Republic of)
| | - K H Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - G R Hong
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
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17
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Bodenstein DF, Kim HK, Brown NC, Navaid B, Young LT, Andreazza AC. Mitochondrial DNA content and oxidation in bipolar disorder and its role across brain regions. NPJ Schizophr 2019; 5:21. [PMID: 31797868 PMCID: PMC6892804 DOI: 10.1038/s41537-019-0089-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/18/2019] [Indexed: 12/18/2022]
Abstract
The underlying pathology of bipolar disorder remains unknown, though evidence is accumulating to support a role of mitochondrial dysfunction. In this study, we aim to investigate electron transport chain complex I subunit NDUFS7 protein expression; mtDNA content; common deletion; and oxidation in the Broadmann area 24 (BA24), cerebellum, hippocampus, and prefrontal cortex from patients with bipolar disorder, schizophrenia, and non-psychiatric controls. Here, we demonstrate no changes in NDUFS7 in BA24, cerebellum or hippocampus, increases in mtDNA content in hippocampus of patients with bipolar disorder, and decreases in mtDNA oxidation in patients with bipolar disorder and schizophrenia, respectively. Paired analysis between BA24 and cerebellum reveal increases within NDUFS7 levels and mtDNA content in cerebellum of patients with bipolar disorder or schizophrenia. We found a positive correlation between NDUFS7 and mtDNA content (ND4 and ND5) when combining brain regions. Our study supports the involvement of mitochondrial dysfunction in bipolar disorder and schizophrenia.
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Affiliation(s)
- D F Bodenstein
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - H K Kim
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - N C Brown
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - B Navaid
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - L T Young
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - A C Andreazza
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada. .,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
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18
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Bach H, Jenkins V, Aledhaim A, Moayedi S, Schenkel SM, Kim HK. Prevalence of fentanyl exposure and knowledge regarding the risk of its use among emergency department patients with active opioid use history at an urban medical center in Baltimore, Maryland. Clin Toxicol (Phila) 2019; 58:460-465. [PMID: 31475588 DOI: 10.1080/15563650.2019.1657583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background: Overdose deaths from fentanyl and its analogs have increased significantly since 2013. There are limited data regarding the prevalence of fentanyl exposure among emergency department (ED) patients with active opioid use.Methods: We conducted a cross-sectional study at an urban hospital from May 20 to July 30, 2018. A convenience sample of adult ED patients with active opioid use, defined as opioid use within seven days prior to ED visit, were enrolled. Rapid Response® Single Drug Test Strip (BTNX Inc., Markham, Canada) was used to detect fentanyl in urine samples. Information on demographic, substance use history, and knowledge of fentanyl was obtained using a brief survey tool. Our primary outcome was the prevalence of fentanyl exposure; secondary outcomes included patients' knowledge regarding potency, risk of overdose death from fentanyl and intentional purchase of fentanyl.Results: During our study period, 451 patients reported active substance use. Of these, 208 reported active opioid use and 165 consented for the study. The median age was 49 years [interquartile range: 38, 57] and 77.0% (n = 127) were male; 42 participants (25.5%) presented to ED after an acute overdose event. Heroin was the preferred opioid of use in 90.8% of the participants, primarily via intranasal route (64.6%). Polysubstance use was reported in 98.8%, most commonly with cocaine (57.6%; n = 95). Fentanyl was detected in 104 out of 129 urine samples tested (80.6%). 84.2% (n = 139) identified fentanyl as highly potent and 85.5% (n = 141) recognized highest risk of death in fentanyl overdose. A larger proportion of non-overdose participants intentionally purchased fentanyl (34.1%; n = 42) compared to the overdose group (16.7%, n = 7; p = .04).Conclusions: The majority of ED patient with active opiate use were exposed to fentanyl while one in three participants intentionally purchased fentanyl despite their awareness of its potency and the high-risk of death from overdose.
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Affiliation(s)
- H Bach
- Department of Emergency Medicine, University of Maryland Medical Center, Baltimore, MD, USA
| | - V Jenkins
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - A Aledhaim
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S Moayedi
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S M Schenkel
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - H K Kim
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
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19
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Kim JH, Jang JH, Yoon SW, Noh JY, Ahn MJ, Kim Y, Jeong DG, Kim HK. Detection of bovine coronavirus in nasal swab of non-captive wild water deer, Korea. Transbound Emerg Dis 2018; 65:627-631. [PMID: 29508550 PMCID: PMC7169857 DOI: 10.1111/tbed.12847] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Indexed: 11/29/2022]
Abstract
Bovine coronavirus (BCoV) is a causative agent of respiratory and enteric diseases in cattle and calves. BCoV infection was also evident in captive wild ruminants. Recently, water deer are recognized as the most common wildlife to approach farmhouses and livestock barns in Korea. Therefore, we investigated 77 nasal swab samples from non‐captive wild water deer (Hydropotes inermis) between November 2016 and September 2017 and identified three samples positive for coronavirus, indicating potential for respiratory shedding. The full genomic sequences of the water deer coronavirus were closely related to BCoV (>98%). Therefore, effective biosecurity system in bovine farms would be necessary to prevent contact between farm ruminants and free‐ranging wild water deer.
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Affiliation(s)
- J H Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - J-H Jang
- Chungnam Wild Animal Rescue Center, Yesan, Korea
| | - S-W Yoon
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - J Y Noh
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - M-J Ahn
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - Y Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - D G Jeong
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - H K Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
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20
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Jung MJ, Kim HK, Choi SY, Kim SG, Jin SY. Solid pseudopapillary neoplasm of the pancreas with liver metastasis initially misinterpreted as benign haemorrhagic cyst. Malays J Pathol 2017; 39:327-330. [PMID: 29279599] [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: 06/07/2023]
Abstract
Solid pseudopapillary neoplasm (SPN) of the pancreas is considered a low-malignant neoplasm with a good prognosis. However, 5% to 15% of patients with SPNs develop metastatic disease, most commonly in the liver. Metastatic hepatic malignancies that show pseudocystic features are rare. Here we describe the case of a middle-aged female with a cystic liver metastasis from SPN. To the best of our knowledge, SPN with a single cystic liver metastasis has not been described, although these tumours frequently undergo haemorrhagic-cystic degeneration. Thus, in these patients the marked cystic change could be misinterpreted as a benign lesion.
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Affiliation(s)
- M J Jung
- Soonchunhyang University College of Medicine, Department of Pathology, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea.
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21
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Kim JH, Son YD, Kim JM, Kim HK, Kim YB, Lee C, Oh CH. Interregional correlations of glucose metabolism between the basal ganglia and different cortical areas: an ultra-high resolution PET/MRI fusion study using 18F-FDG. ACTA ACUST UNITED AC 2017; 51:e6724. [PMID: 29160415 PMCID: PMC5685063 DOI: 10.1590/1414-431x20176724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 09/12/2017] [Indexed: 11/29/2022]
Abstract
Basal ganglia have complex functional connections with the cerebral cortex and are involved in motor control, executive functions of the forebrain, such as the planning of movement, and cognitive behaviors based on their connections. The aim of this study was to provide detailed functional correlation patterns between the basal ganglia and cerebral cortex by conducting an interregional correlation analysis of the 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) data based on precise structural information. Fifteen participants were scanned with 7-Tesla magnetic resonance imaging (MRI) and high resolution research tomography (HRRT)-PET fusion system using 18F-FDG. For detailed interregional correlation analysis, 24 subregions of the basal ganglia including pre-commissural dorsal caudate, post-commissural caudate, pre-commissural dorsal putamen, post-commissural putamen, internal globus pallidus, and external globus pallidus and 80 cerebral regions were selected as regions of interest on the MRI image and their glucose metabolism were calculated from the PET images. Pearson's product-moment correlation analysis was conducted for the interregional correlation analysis of the basal ganglia. Functional correlation patterns between the basal ganglia and cerebral cortex were not only consistent with the findings of previous studies, but also showed new functional correlation between the dorsal striatum (i.e., caudate nucleus and putamen) and insula. In this study, we established the detailed basal ganglia subregional functional correlation patterns using 18F-FDG PET/MRI fusion imaging. Our methods and results could potentially be an important resource for investigating basal ganglia dysfunction as well as for conducting functional studies in the context of movement and psychiatric disorders.
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Affiliation(s)
- J H Kim
- Research Institute for Advanced Industrial Technology, College of Science and Technology, Korea University, Sejong, South Korea
| | - Y D Son
- Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, South Korea
| | - J M Kim
- Department of Electronics and Information Engineering, College of Science and Technology, Korea University, Sejong, South Korea
| | - H K Kim
- Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, South Korea
| | - Y B Kim
- Department of Neurosurgery, Gachon University Gil Medical Center, Gachon University School of Medicine, Incheon, South Korea
| | - C Lee
- Bioimaging Research Team, Korea Basic Science Institute, Cheongju, South Korea
| | - C H Oh
- Department of Electronics and Information Engineering, College of Science and Technology, Korea University, Sejong, South Korea
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22
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Hong TH, Cho JH, Shin SM, Kim HK, Choi YS, Zo JI, Shim YM, Kim J. F-063EXTENDED SLEEVE LOBECTOMY FOR CENTRALLY LOCATED NON-SMALL CELL LUNG CANCER: A 20-YEAR SINGLE CENTRE EXPERIENCE. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.075] [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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23
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Shin S, Choi YS, Cho JH, Kim HK, Kim J, Zo JI, Shim YM. F-072PROGNOSTIC IMPACT OF PATHOLOGIC MICROSCOPIC LYMPHOVASCULAR INVASION IN COMPLETELY RESECTED EARLY STAGE NON-SMALL CELL LUNG CANCER: IMPLICATION TO THE T DESCRIPTOR. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.084] [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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24
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Chae MR, Kang SJ, Lee KP, Choi BR, Kim HK, Park JK, Kim CY, Lee SW. Onion (Allium cepa L.) peel extract (OPE) regulates human sperm motility via protein kinase C-mediated activation of the human voltage-gated proton channel. Andrology 2017; 5:979-989. [PMID: 28805023 DOI: 10.1111/andr.12406] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 06/13/2017] [Accepted: 06/27/2017] [Indexed: 01/14/2023]
Abstract
Onion (Allium cepa L.) and quercetin protect against oxidative damage and have positive effects on multiple functional parameters of spermatozoa, including viability and motility. However, the associated underlying mechanisms of action have not yet been identified. The aim of this study was to investigate the effect of onion peel extract (OPE) on voltage-gated proton (Hv1) channels, which play a critical role in rapid proton extrusion. This process underlies a wide range of physiological processes, particularly male fertility. The whole-cell patch-clamp technique was used to record the changes in Hv1 currents in HEK293 cells transiently transfected with human Hv1 (HVCN1). The effects of OPE on human sperm motility were also analyzed. OPE significantly activated the outward-rectifying proton currents in a concentration-dependent manner, with an EC50 value of 30 μg/mL. This effect was largely reversible upon washout. Moreover, OPE induced an increase in the proton current amplitude and decreased the time constant of activation at 0 mV from 4.9 ± 1.7 to 0.6 ± 0.1 sec (n = 6). In the presence of OPE, the half-activation voltage (V1/2 ) shifted in the negative direction, from 20.1 ± 5.8 to 5.2 ± 8.7 mV (n = 6), but the slope was not significantly altered. The OPE-induced current was profoundly inhibited by 10 μm Zn2+ , the most potent Hv1 channel inhibitor, and was also inhibited by treatment with GF109203X, a specific protein kinase C (PKC) inhibitor. Furthermore, sperm motility was significantly increased in the OPE-treated groups. OPE exhibits protective effects on sperm motility, at least partially via regulation of the proton channel. Moreover, similar effects were exerted by quercetin, the major flavonoid in OPE. These results suggest OPE, which is rich in the potent Hv1 channel activator quercetin, as a possible new candidate treatment for human infertility.
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Affiliation(s)
- M R Chae
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kang
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K P Lee
- Laboratory of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - B R Choi
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - H K Kim
- College of Pharmacy, Kyungsung University, Busan, Korea
| | - J K Park
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - C Y Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Korea
| | - S W Lee
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
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25
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Choo SH, Lee SW, Chae MR, Kang SJ, Sung HH, Han DH, Chun JN, Park JK, Kim CY, Kim HK, So I. Effects of eupatilin on the contractility of corpus cavernosal smooth muscle through nitric oxide-independent pathways. Andrology 2017; 5:1016-1022. [PMID: 28719725 DOI: 10.1111/andr.12397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/26/2017] [Accepted: 06/09/2017] [Indexed: 12/19/2022]
Abstract
Eupatilin (5,7-dihydroxy-3,4,6-trimethoxyflavone) is one of the main compounds present in Artemisia species. Eupatilin has both antioxidative and anti-inflammatory properties and a relaxation effect on vascular contraction regardless of endothelial function. We evaluated the relaxant effects of eupatilin on the corpus cavernosum (CC) of rabbits and the underlying mechanisms of its activity in human corpus cavernosum smooth muscle (CCSM) cells. Isolated rabbit CC strips were mounted in an organ bath system. A conventional whole-cell patch clamp technique was used to measure activation of calcium-sensitive K+ -channel currents in human CCSM cells. The relaxation effect of eupatilin was evaluated by cumulative addition (10-5 m ~ 3 × 10-4 m) to CC strips precontracted with 10-5 m phenylephrine. Western blotting analysis was performed to measure myosin phosphatase targeting subunit 1 (MYPT1) and protein kinase C-potentiated inhibitory protein for heterotrimeric myosin light chain phosphatase of 17-kDa (CPI-17) expression and to evaluate the effect of eupatilin on the RhoA/Rho-kinase pathway. Eupatilin effectively relaxed the phenylephrine-induced tone in the rabbit CC strips in a concentration-dependent manner with an estimated EC50 value of 1.2 ± 1.6 × 10-4 m (n = 8, p < 0.05). Iberiotoxin and tetraethylammonium significantly reduced the relaxation effect (n = 8, p < 0.001 and p = 0.003, respectively). Removal of the endothelium or the presence of L-NAME or indomethacin did not affect the relaxation effect of eupatilin. In CCSM cells, the extracellular application of eupatilin 10-4 m significantly increased the outward currents, and the eupatilin-stimulated currents were significantly attenuated by treatment with 10-7 m iberiotoxin (n = 13, p < 0.05). Eupatilin reduced the phosphorylation level of MYPT1 at Thr853 of MLCP and CPI-17 at Thr38. Eupatilin-induced relaxation of the CCSM cells via NO-independent pathways. The relaxation effects of eupatilin on CCSM cells were partially due to activation of BKCa channels and inhibition of RhoA/Rho-kinase.
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Affiliation(s)
- S H Choo
- Department of Urology, Ajou University School of Medicine, Suwon, Korea
| | - S W Lee
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M R Chae
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kang
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H H Sung
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D H Han
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J N Chun
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - J K Park
- Department of Urology, Institute for Medical Sciences, Medical School, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - C Y Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Korea
| | - H K Kim
- College of Pharmacy, Kyungsung University, Busan, Korea
| | - I So
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
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26
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Kim HK, Ki CS, Kim YJ, Lee MS. Radiological Findings of Two Sisters with Aceruloplasminemia Presenting with Chorea. Clin Neuroradiol 2017; 27:385-388. [PMID: 28258281 DOI: 10.1007/s00062-017-0573-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/21/2017] [Indexed: 12/14/2022]
Affiliation(s)
- H K Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Eonjuro 211, 06274, Seoul, South Korea
| | - C S Ki
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Y J Kim
- Ilsong Institute of Life Science, Hallym University, Anyang, South Korea
| | - M S Lee
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Eonjuro 211, 06274, Seoul, South Korea.
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27
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Kalinsky K, Lee S, Zhong X, Lim EA, Gunther JE, Hibshoosh H, Kim HK, Accordino M, Crew K, Hielscher A, Hershman DL. Abstract P4-01-06: Diffuse optical tomography can predict pathologic complete response in patients with HER2+ or triple negative breast cancer undergoing neoadjuvant chemotherapy. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p4-01-06] [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
Background
Pathologic complete response (pCR) predicts clinical outcome in women who receive neoadjuvant chemotherapy (NACT) for breast cancer. Identifying who will have a pCR early during NACT has the potential to save patients months of ineffective chemotherapy and limit unnecessary toxicity; however, no method currently is standardly used. Diffuse optical tomography (DOT) uses near-infrared light to measure concentrations of oxyhemoglobin [HbO2], deoxyhemoglobin [Hb], total hemoglobin [HbT], and oxygen saturation [SO2%], and can assess tissue structure and vascularity. As it is inexpensive, fast, and does not require radiation or intravenous contrast no radiation nor IV contrast, DOT has the potential to become an integral part of NACT to predict responses to NACT. Given the particular significance for pCR in HER2+ and triple negative breast cancer (TNBC), we prospectively evaluated whether a 2 week change in DOT parameters could predict pCR after 5 months of NACT in these subtypes.
Methods
We conducted a prospective cohort study of women with stage II-IIIC breast cancer scheduled to receive NACT with 12 weeks of weekly taxol and four cycles of doxorubicin with cyclophosphamide (AC). We evaluated the associations between residual cancer burden (RCB: 0-3; pCR= RCB 0) and changes in DOT measures. Optical imaging was performed at baseline and before the following: Taxol #3, Taxol #5, AC #1, AC #2, and surgery. Correlation and t-testing were used to evaluate the relationship between 2-week DOT changes and pathologic response.
Results
In a prospectively accrued, longitudinal clinical study with DOT, at least 20 patients with HER2+ or TNBC were enrolled. For patients with these tumor subtypes, there was a significant association between pCR after 5 months of NACT (i.e. RCB 0) and change in the following DOT parameters comparing baseline to after 2 weeks of taxol: HBO (p=0.02), HBT (p=0.02), and S02% (p=0.03). No significant association was seen with HB (p=0.20) or water (p=0.85). When looking specifically at patients with TNBC (n=at least 8 patients), these associations were particulars strong between pCR and the following DOT parameters: HBO (p=0.004), HBT (p=0.009), and S02% (p=0.04). Additional patients are anticipated in this study are anticipated to complete NACT and will be reported at SABCS.
Conclusions
Optical imaging can provide imaging biomarkers to monitor breast cancer response to NACT. Early predictions of pathologic response to NACT can be made with high accuracy as early as two weeks after treatment initiation. These findings are specifically strong in TNBC, a group for whom pCR is predictive of clinical outcome.
Citation Format: Kalinsky K, Lee S, Zhong X, Lim EA, Gunther JE, Hibshoosh H, Kim HK, Accordino M, Crew K, Hielscher A, Hershman DL. Diffuse optical tomography can predict pathologic complete response in patients with HER2+ or triple negative breast cancer undergoing neoadjuvant chemotherapy [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P4-01-06.
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Affiliation(s)
| | - S Lee
- Columbia University Medical Center
| | - X Zhong
- Columbia University Medical Center
| | - EA Lim
- Columbia University Medical Center
| | | | | | - HK Kim
- Columbia University Medical Center
| | | | - K Crew
- Columbia University Medical Center
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Marahatta A, Baek IH, Pyo JS, Bhandary B, Kim HK, Bang JS, Yoon H, Rhew KY, Chai OH, Lee YC. Pharmacokinetics and Bronchopulmonary Disposition of PI3KDelta Inhibitor IC87114 after Intratracheal Administration in a Severe Asthma Model. Indian J Pharm Sci 2017. [DOI: 10.4172/pharmaceutical-sciences.1000317] [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: 11/09/2022] Open
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29
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Kook JH, Kim HK, Kim HJ, Kim KW, Kim TH, Kang KR, Oh DJ, Lee SH. Increased expression of bitter taste receptors in human allergic nasal mucosa and their contribution to the shrinkage of human nasal mucosa. Clin Exp Allergy 2016; 46:584-601. [PMID: 26931803 DOI: 10.1111/cea.12727] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Revised: 01/19/2016] [Accepted: 02/07/2016] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Bitter taste receptors (TAS2Rs) are expressed in the extraoral tissues, where they possess various physiological functions. This study is to characterize TAS2Rs expression in normal and allergic nasal mucosa and analyse nasal symptom after challenge with bitter tastes to evaluate their pathophysiological function in normal and allergic nasal mucosa. METHODS The expression levels of TAS2Rs (TAS2R4, 5, 7, 10, 14, 39, and 43) in nasal mucosa were investigated by real-time PCR, Western blot, and immunohistochemistry. The expression levels of TAS2Rs and Ca(2+) imaging in cultured epithelial cells were measured after stimulation with type 2 cytokines (IL-4, IL-5, and IL-13) or bitter tastes. Nasal symptoms in control subjects and allergic rhinitis patients using visual analogue score and acoustic rhinometry were evaluated before and after stimulation with bitter tastes. Vascular diameter of rat nasal septum was measured before and after treatment with bitter tastes. RESULTS TAS2Rs tested here were expressed in nasal mucosa where they were commonly distributed in superficial epithelium, submucosal glands, and endothelium. Their expression levels are increased in allergic nasal mucosa and up-regulated in cultured epithelial cells simulated with type 2 cytokines. After treatment with bitter tastes, intracellular Ca(2+) signalling was increased in cultured epithelial cells, and vascular constriction was found in rat nasal septum. Increased nasal patency was observed in human nasal mucosa without pain or sneezing. CONCLUSION AND CLINICAL RELEVANCE TAS2Rs are constitutively expressed in human nasal mucosa and their expression levels are increased in allergic nasal mucosa, where they could potentially contribute to shrinkage of normal and allergic nasal mucosa.
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Affiliation(s)
- J H Kook
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Hallym University, ChunCheon, South Korea
| | - H K Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
| | - H J Kim
- College of Medicine, Korea University, Seoul, South Korea
| | - K W Kim
- College of Medicine, Korea University, Seoul, South Korea
| | - T H Kim
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
| | - K R Kang
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
| | - D J Oh
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
| | - S H Lee
- Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, Seoul, South Korea
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Keum CY, Lee MK, Kim HK, Cheung YJ, Cho HH, Kim JH, Kim MR. Robot-Assisted Laparoscopic Adenomyomectomy: Successful Treatment of Adenomyosis Patients Wishing for Uterus-Sparing Treatment. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.302] [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: 11/28/2022]
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Lee MK, Kim HK, Cheung YJ, Kim MR, Kim JH. Robot-Assisted Laparoscopic Myomectomy, an Alternative to Laparotomy for Numerous Myomas (Over 10). J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hwang YB, Cheung YJ, Lee MK, Kim HK, Cho HH, Kim JH, Kim MR. Comparing with Open Surgery, Robot-Assisted Laparoscopic Adenomyomectomy Is a Feasible Option of Uterus-Sparing Surgery. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim YG, Kim HK, Kang SY, Chung YJ, Cho HH, Kim JH, Kim MR. Successfully Removed Unfavorably Located Myomas By Robot-Assisted Laparoscopic Myomectomy. J Minim Invasive Gynecol 2016; 22:S24-S25. [PMID: 27679155 DOI: 10.1016/j.jmig.2015.08.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Y G Kim
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - H K Kim
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Y Kang
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y J Chung
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - H H Cho
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - J H Kim
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - M R Kim
- Department of Obstetrics & Gynecology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
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Park JH, Kim JE, Gu JY, Yoo HJ, Park SH, Kim YI, Nam-Goong IS, Kim ES, Kim HK. Evaluation of Circulating Markers of Neutrophil Extracellular Trap (NET) Formation as Risk Factors for Diabetic Retinopathy in a Case-Control Association Study. Exp Clin Endocrinol Diabetes 2016; 124:557-561. [PMID: 27420129 DOI: 10.1055/s-0042-101792] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background: Inflammatory stimuli can induce neutrophils to release nuclear DNA combined with histones into the extracellular space, forming neutrophil extracellular traps. Because inflammation contributes to diabetic retinopathy, it is plausible that neutrophil extracellular trap formation actively occurs in diabetic retinopathy. This case-control study investigated the clinical relevance of circulating levels of neutrophil extracellular trap components as risk factors of diabetic retinopathy, and further evaluated whether glucose induced neutrophil extracellular trap formation in vitro using whole blood from healthy volunteers. Methods: Circulating levels of DNA-histone complexes, cell free double-stranded DNA, and polymorphonuclear neutrophil elastase, considered to be markers of neutrophil extracellular trap formation, were measured in patients with diabetic retinopathy (n=28) and without (n=62) and in 28 healthy controls. Results: Circulating DNA-histone complex and polymorphonuclear neutrophil elastase levels were significantly increased in patients with diabetic retinopathy compared with those without retinopathy. Multivariable logistic regression analysis, adjusted for glycated hemoglobin levels and fasting blood glucose, revealed that DNA-histone complex and polymorphonuclear neutrophil elastase levels were significant independent risk factors of retinopathy. In vitro experiments also showed that glucose significantly increased markers of neutrophil extracellular trap formation in a dose-dependent manner. Conclusions: Markers of neutrophil extracellular trap formation were independent risk factors of diabetic retinopathy. This finding provides a new insight into the potential therapeutic and preventive approaches to dampen neutrophil extracellular trap formation.
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Affiliation(s)
- J-H Park
- Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-E Kim
- Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-Y Gu
- Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - H J Yoo
- Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S H Park
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Y I Kim
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - I S Nam-Goong
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - E S Kim
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - H K Kim
- Department of Laboratory Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
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Abstract
In this study, the hypocholesterolaemic effect of amaranth grain, oil and squalene are examined. In experiment 1, rats are given a semi-purified diet containing 1% (w/w) cholesterol for four weeks and either amaranth grain (AG; 300 g/kg) or amaranth oil (AO; 90 g/kg) substituted in experimental groups. Both AG and AO lowered serum and hepatic cholesterol and triglyceride levels. Faecal excretion of cholesterol and bile acid in the AO group increased, while AG affected only bile acid excretion. In experiment 2, rats were fed the cholesterol diet for four weeks and injected (i.p.) with saline (control), amaranth squalene (AS) or shark liver squalene (SS, 200 mg/kg) for seven days. The hypolipidaemic effects of AS were evident in both serum and liver. In addition, AS markedly increased faecal excretions of cholesterol and bile acid, and slightly inhibited 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase activity. In contrast, none of these effects were observed in the SS group. This preliminary study suggests that the cholesterol-lowering effect of AS may be mediated by increased faecal elimination of steroids through interference with cholesterol absorption, and that different sources of squalene (plant versus animal) may affect cholesterol metabolism differently.
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Affiliation(s)
- D H Shin
- Graduate School of Biotechnology, Korea University, Seoul 136-701, Korea
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Kim HK, Yoon SW, Kim DJ, Koo BS, Noh JY, Kim JH, Choi YG, Na W, Chang KT, Song D, Jeong DG. Detection of Severe Acute Respiratory Syndrome-Like, Middle East Respiratory Syndrome-Like Bat Coronaviruses and Group H Rotavirus in Faeces of Korean Bats. Transbound Emerg Dis 2016; 63:365-72. [PMID: 27213718 PMCID: PMC7169817 DOI: 10.1111/tbed.12515] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Indexed: 12/18/2022]
Abstract
Bat species around the world have recently been recognized as major reservoirs of several zoonotic viruses, such as severe acute respiratory syndrome coronavirus (SARS‐CoV), Middle East respiratory syndrome coronavirus (MERS‐CoV), Nipah virus and Hendra virus. In this study, consensus primer‐based reverse transcriptase polymerase chain reactions (RT‐PCRs) and high‐throughput sequencing were performed to investigate viruses in bat faecal samples collected at 11 natural bat habitat sites from July to December 2015 in Korea. Diverse coronaviruses were first detected in Korean bat faeces, including alphacoronaviruses, SARS‐CoV‐like and MERS‐CoV‐like betacoronaviruses. In addition, we identified a novel bat rotavirus belonging to group H rotavirus which has only been described in human and pigs until now. Therefore, our results suggest the need for continuing surveillance and additional virological studies in domestic bat.
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Affiliation(s)
- H K Kim
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - S-W Yoon
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - D-J Kim
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - B-S Koo
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - J Y Noh
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - J H Kim
- Biological and Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, Korea
| | - Y G Choi
- The Korean Institute of Biospeleology, Daejeon, Korea
| | - W Na
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Department of Pharmacy, College of Pharmacy, Korea University, Sejong, Korea
| | - K-T Chang
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - D Song
- Department of Pharmacy, College of Pharmacy, Korea University, Sejong, Korea
| | - D G Jeong
- Research Center for Viral Infectious Diseases and Control, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, Korea University of Science and Technology (UST), Daejeon, Korea
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Kim HK, Lee H, Lew BL, Sim WY, Kim YO, Lee SW, Lee S, Cho IH, Kwon JT, Kim HJ. Corrigendum: Association between TAP1 gene polymorphisms and alopecia areata in a Korean population - Genet. Mol. Res. 14 (4): 18820-18827. Genet Mol Res 2016; 15:150170751. [PMID: 26985926 DOI: 10.4238/gmr.150170751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- H K Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - H Lee
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - B L Lew
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - W Y Sim
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y O Kim
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong, Republic of Korea
| | - S W Lee
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong, Republic of Korea
| | - S Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong, Republic of Korea
| | - I H Cho
- Department of Convergence Medical Science, Brain Korea 21 Plus Program, and Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J T Kwon
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - H J Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Soonchunhyang Medical Research Institute, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
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Kim HK, Lee H, Lew BL, Sim WY, Kim YO, Lee SW, Lee S, Cho IK, Kwon JT, Kim HJ. Association between TAP1 gene polymorphisms and alopecia areata in a Korean population. Genet Mol Res 2015; 14:18820-7. [PMID: 26782532 DOI: 10.4238/2015.december.28.31] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The transporter 1 ATP-binding cassette sub-family B (MDR/TAP) gene (TAP1) is located in the major histocompatibility complex class II region, and forms a heterodimer that plays a key role in endogenous antigen presentation pathways. Investigation of polymorphisms identified in these loci has revealed an association with several autoimmune disorders. Alopecia areata (AA) is a common autoimmune disease resulting from T cell-induced damage to hair follicles. The present study documents for the first time a comparison between the allelic and genotypic frequencies of TAP1 single nucleotide polymorphisms (SNPs) in patients with AA and those of a control group, using a direct sequencing method. Our results suggest an association between a promoter SNP (rs2071480) and susceptibility to this disease.
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Affiliation(s)
- H K Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - H Lee
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - B L Lew
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - W Y Sim
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Y O Kim
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong, Republic of Korea
| | - S W Lee
- Development of Ginseng and Medical Plants Research Institute, Rural Administration, Eumseong, Republic of Korea
| | - S Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong, Republic of Korea
| | - I K Cho
- Department of Convergence Medical Science, Brain Korea 21 Plus Program, Institute of Korean Medicine, College of Oriental Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - J T Kwon
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - H J Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.,Soonchunhyang Medical Research Institute, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
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Choi BR, Kumar SK, Zhao C, Zhang LT, Kim CY, Lee SW, Jeon JH, Soní KK, So I, Kim SH, Park NC, Kim HK, Park JK. Additive effects of Artemisia capillaris extract and scopoletin on the relaxation of penile corpus cavernosum smooth muscle. Int J Impot Res 2015; 27:225-32. [PMID: 26447600 DOI: 10.1038/ijir.2015.23] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 06/07/2015] [Accepted: 07/30/2015] [Indexed: 11/09/2022]
Abstract
The objective was to investigate the cellular effect and action mechanism of Artemisia capillaris extract (ACE) and its component, scopoletin, on penile corpus cavernosum smooth muscle (PCCSM). In vitro study with PCCSM, the precontracted PCCSM with phenylephrine was treated with ACE or scopoletin. Cyclic nucleotides in the perfusate were measured by radioimmunoassay and expression of protein and mRNA of endothelial nitric oxide synthase (eNOS) and neuronal nitric oxide synthase in the perfused PCCSM were measured by western blot and real-time PCR, respectively. The interaction of ACE or scopoletin with udenafil was also evaluated. ACE and scopoletin exerted a significant and concentration-dependent relaxation in PCCSM. The perfusion with ACE or scopoletin significantly increased cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) and the perfusion with ACE or scopoletin increased the expression of eNOS mRNA and protein. Furthermore, ACE or scopoletin enhanced udenafil-inducing relaxation in PCCSM. ACE and scopoletin relaxed the PCCSM mainly by activating nitric oxide-cGMP system and cAMP pathway and they may be additive therapeutic candidates for ED patients who do not completely respond to udenafil.
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Affiliation(s)
- B R Choi
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - S K Kumar
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - C Zhao
- Department of Urology, Renji Hospital, Jiao Tong University School of Medicine, and Shanghai Institute of Andrology, Shanghai, China
| | - L T Zhang
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - C Y Kim
- Department of Pharmacognosy, Hangyang University, Ansan, Republic of Korea
| | - S W Lee
- Department of Urology, Sungkyunkwan University Medical School, Seoul, Republic of Korea
| | - J-H Jeon
- Department of Physiology, Seoul National University Medical School, Seoul, Republic of Korea
| | | | - I So
- Department of Physiology, Seoul National University Medical School, Seoul, Republic of Korea
| | - S H Kim
- Department of Physiology, Diabetic Research Center, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - N C Park
- Department of Urology, Pusan National University Hospital, Busan, Republic of Korea
| | - H K Kim
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - J K Park
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
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Khalil MA, Kim HK, Hoi JW, Kim I, Dayal R, Shrikhande G, Hielscher AH. Detection of Peripheral Arterial Disease Within the Foot Using Vascular Optical Tomographic Imaging: A Clinical Pilot Study. Eur J Vasc Endovasc Surg 2015; 49:83-9. [PMID: 25457299 DOI: 10.1016/j.ejvs.2014.10.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 10/14/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Vascular optical tomographic imaging (VOTI) is a novel imaging modality that is capable of detecting hemoglobin concentrations in tissue. VOTI is non-invasive, non-ionizing and does not require contrast injection. This technology was applied to the diagnosis of peripheral arterial disease (PAD) within lower extremities of diabetic patients with calcified arteries. This could be of substantial benefit as these patients suffer from comorbidities such as arterial incompressibility, which complicates diagnosis and monitoring. METHODS Forty individuals (10 non-diabetic patients with PAD, 10 diabetic patients with PAD, and 20 healthy volunteers) were enrolled in a diagnostic pilot study using the VOTI system. The patients were imaged during at high pressure cuff occlusion. RESULTS The VOTI system was capable of quantifying the blood volume changes within the foot during the thigh cuff occlusion and outputting diagnostic parameters, such as change in hemoglobin concentration, enabling the assessment of foot perfusion. This study resulted in a statistically significant difference between the healthy cohort and both the non-diabetic and the diabetic PAD cohorts (p = .006, p = .006). Receiver operating characteristic (ROC) curve analysis showed that PAD diagnosis could be made with over 80% sensitivity or specificity depending on the characteristic cutoff point. In addition, VOTI was capable of providing the locations of under-perfused regions within the foot and evaluating the severity of arterial disease, even within diabetic patients with calcified arteries, who are traditionally difficult to diagnose. CONCLUSION VOTI can effectively diagnose PAD independently of arterial compressibility, making it very useful for assessing vascular disease in diabetic patients.
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Lee MJ, Kim SL, Kim HI, Oh YJ, Lee SH, Kim HK, Han CS, Lyoo CH, Ryu YH, Lee MS. [(18)F] FP-CIT PET study in parkinsonian patients with leukoaraiosis. Parkinsonism Relat Disord 2015; 21:704-8. [PMID: 25937616 DOI: 10.1016/j.parkreldis.2015.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 03/29/2015] [Accepted: 04/12/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUNDS Leukoaraiosis may present with slowly progressive parkinsonism indistinguishable from primary degenerative parkinsonism. Both leukoaraiosis and degenerative parkinsonism are an age-related disorder. Thus, comorbidity is expected to be common in elderly patients with parkinsonism. However, no systematic study has been reported on the clinical features indicating concomitant nigrostriatal dopaminergic denervation (NDD) in parkinsonian patients with leukoaraiosis. METHODS We performed [(18)F] FP-CIT positron emission tomography studies in 42 consecutive parkinsonian patients with diffuse leukoaraiosis, but no basal ganglia vascular lesions. RESULTS Twenty (48%) of the 42 patients had coexisting NDD. Compared to parkinsonian patients with isolated leukoaraiosis, those with coexisting NDD more frequently had asymmetric onset. They had similar degree of parkinsonian motor deficits in the legs, but greater rigidity and resting tremor in the arms. Consequently, they had less prominent lower body parkinsonism. They more frequently showed favorable response to levodopa treatment. They had similar burden of regional and total leukoaraiosis. Among a variety of clinical variables and MRI findings, only asymmetric onset and more than 30% improvement in UPDRS motor score by levodopa treatment were valuable indicators of coexisting NDD. CONCLUSIONS We would like to recommend dopaminergic functional imaging studies for all parkinsonian patients with leukoaraiosis. Further studies are needed to confirm sensitivity and specificity of asymmetric onset and good levodopa response for the prediction of coexisting NDD in a different group of parkinsonian patients with leukoaraiosis.
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Affiliation(s)
- M J Lee
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Pusan, Republic of Korea
| | - S L Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H I Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y J Oh
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - S H Lee
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - H K Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - C S Han
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - C H Lyoo
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Y H Ryu
- Department of Nuclear Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - M S Lee
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Abstract
Spontaneous flexor tendon rupture is a rare condition and the aetiology is not clear. We report 12 elderly Korean farmers with spontaneous flexor tendon ruptures. We found the rupture in the dominant hand in ten patients. A rupture in the little finger was found in all 12 patients (seven with both flexor tendons ruptured and five with only the profundus ruptured), in the ring finger in four patients (the profundus ruptured in all and both flexor tendons in two patients), and in the middle finger a partial rupture of the profundus in one patient. The tendons were ruptured close to the hook of the hamate. Repetitive friction between the flexor tendons and the hamate hook may cause the ruptures. The hamate hook was excised and the ruptured profundus tendons were reconstructed with tendon transfers with quite favourable functional recovery at follow-up of 1 to 2 years. The ruptured superficialis tendons were not reconstructed. Level of Evidence IV.
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Affiliation(s)
- G J Lee
- MS Jaegeon Hospital, Seoul National University Hospital, Seoul, Korea
| | - S Kwak
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - H K Kim
- MS Jaegeon Hospital, Seoul National University Hospital, Seoul, Korea
| | - S H Ha
- MS Jaegeon Hospital, Seoul National University Hospital, Seoul, Korea
| | - H J Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - G H Baek
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
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43
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Heo KN, Hong EC, Kim CD, Kim HK, Lee MJ, Choo HJ, Choi HC, Mushtaq MMH, Parvin R, Kim JH. Growth performance, carcass yield, and quality and chemical traits of meat from commercial korean native ducks with 2-way crossbreeding. Asian-Australas J Anim Sci 2015; 28:382-90. [PMID: 25656202 PMCID: PMC4341083 DOI: 10.5713/ajas.13.0620] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 12/16/2013] [Accepted: 09/22/2014] [Indexed: 11/27/2022]
Abstract
This work was conducted to investigate the performance and meat characteristics of commercial Korean native duck (KND). A total of 180 1-d-old ducklings of 2-way crossbreds from A and B lines (from National Institute of Animal Science) were used in this work and divided into 4 groups (3 replicates/group, 15 birds/replicate). The four groups were 4 crossbreds as AA (A line [♀]×A line [♂]), AB (A line [♀]×B line [♂]), BB (Pure line B strains) and BA (B strains [♀]×A strain [♂]). Ducks were fed diets based on corn-soybean meal for 0 to 3 wk (22.4% crude protein [CP], 2,945 kcal/kg metabolizable energy [ME]) and 3 to 8 wk (18.4% CP, 3,047 kcal/kg ME). As a result of this study, average body weight of 4 crossbreds were 625, 1,617, 2,466, and 2,836 g at 2, 4, 6, and 8 weeks, respectively, and significantly increased over the period of time (p<0.05). Body weight of BB group was greater than other crossbreds at the age of 6 weeks (p<0.05). There was a significant difference in weekly body weight gains (p<0.05), which were 573, 991, 850, and 371 g at 2, 4, 6, and 8 weeks old, respectively. Uniformity of 4 crossbreds was 84.9%, 80.5%, and 72.5% at 6, 7, and 8 weeks, respectively, and there was no difference among crossbreds. Body weight gain of BB crossbred was highest among crossbreds (p<0.05). Weekly feed intake significantly increased with weeks as 669, 1,839, 2,812, and 3,381 g at 2, 4, 6, and 8 weeks respectively (p<0.05). Feed intakes of AA and BB crossbreds were higher at 2 to 4 weeks old than others and that of BB crossbred was highest at 4 to 6 weeks old (p<0.05). Weekly feed conversion ratios were 1.17, 1.86, 3.32, and 9.37 at 0 to 2, 2 to 4, 4 to 6, and 6 to 8 weeks old, respectively, and it increased with age (p<0.05). There was no significant difference in feed conversion ratio among crossbreds. Carcass yields of 4 crossbreds were 73.6%, 71.6%, 73.5%, and 71.7%, respectively, so there was no significant difference among crossbreds. There was no difference in wing, neck, breast and leg ratios among crossbreds. However, back ratios of 4 crossbreds were 17.6%, 18.0%, 15.8%, and 17.6%, respectively, and back ratio of BB was the highest among crossbreds. Finally, these results may provide the basic data on the production, carcass quality, fatty acid and amino acid composition of commercial KND with 2-way crossbreeding.
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Kwon CH, Park HJ, Lee JR, Kim HK, Jeon TY, Jo HJ, Kim DH, Kim GH, Park DY. Serpin peptidase inhibitor clade A member 1 is a biomarker of poor prognosis in gastric cancer. Br J Cancer 2014; 111:1993-2002. [PMID: 25211665 PMCID: PMC4229634 DOI: 10.1038/bjc.2014.490] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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] [Revised: 07/24/2014] [Accepted: 08/13/2014] [Indexed: 01/16/2023] Open
Abstract
Background: In a previous study, we reported that serpin peptidase inhibitor clade A member 1 (serpinA1) is upregulated in Snail-overexpressing gastric cancer. Although serpinA1 has been studied in several types of cancer, little is known about its roles and mechanisms of action. In this study, we examined the role of serpinA1 in the migration and invasion of gastric cancers and determined its underlying mechanism. Methods: Expression levels were assessed by western blot analyses and real-time PCR. Snail binding to serpinA1 promoter was analysed by chromatin immunoprecipitation (ChIP) assays. The roles of serpinA1 were studied using cell invasion and migration assays. In addition, the clinicopathologic and prognostic significance of serpinA1 expression were validated in 400 gastric cancer patients using immunohistochemical analysis. Results: Overexpression of Snail resulted in upregulation of serpinA1 in gastric cancer cell lines, AGS and MKN45, whereas knockdown of Snail inhibited serpinA1 expression. Chromatin immunoprecipitation analysis showed that overexpression of Snail increased Snail recruitment to the serpinA1 promoter. Overexpression of serpinA1 increased the migration and invasion of gastric cancer cells, whereas knockdown of serpinA1 decreased invasion and migration. Moreover, serpinA1 increased mRNA levels and release of metalloproteinase-8 in gastric cancer cells. Serpin peptidase inhibitor clade A member 1 was observed in the cytoplasm of tumour cells and the stroma by immunohistochemistry. Enhanced serpinA1 expression was significantly associated with increased tumour size, advanced T stage, perineural invasion, lymphovascular invasion, lymph node metastases, and shorter overall survival. Conclusions: Serpin peptidase inhibitor clade A member 1 induces the invasion and migration of gastric cancer cells and its expression is associated with the progression of gastric cancer. These results may provide a potential target to prevent invasion and metastasis in gastric cancer.
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Affiliation(s)
- C H Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H J Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - J R Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H K Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - T Y Jeon
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - H-J Jo
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - D H Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - G H Kim
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
| | - D Y Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Busan 602-739, Korea
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Choo YK, Kwon HJ, Oh ST, Kang CW, Kim HK, Hong EC, Heo KN, Lee SK, An BK. Growth performance and carcass characteristics of korean native ducks fed diets with varying levels of limiting amino acids. Asian-Australas J Anim Sci 2014; 27:518-23. [PMID: 25049982 PMCID: PMC4093530 DOI: 10.5713/ajas.2013.13675] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/20/2014] [Accepted: 12/17/2013] [Indexed: 12/02/2022]
Abstract
There are multiple experiments conducted with male Korean native ducks (KND) to evaluate the optimal levels of limiting amino acids (AA). In Exp. 1, a total of 450 one-d-old male KNDs were divided into five groups with six replicates and fed experimental diets with varying levels of lysine, total sulfur amino acids (TSAA) and threonine (T1, 0.90/0.74/0.70%; T2, 1.00/0.82/0.77%; T3, 1.10/0.90/0.85%; T4, 1.20/0.98/0.93%; T5, 1.30/1.07/1.01%) to 21 d of age. In Exp. 2, one-d-old male KND were received and fed commercial starter diet from hatching to 21 d of age, and then divided into five groups with six replicates and fed one of five diets varying levels of lysine, TSAA, and threonine (T1, 0.73/0.62/0.54%; T2, 0.80/0.68/0.60%; T3, 0.87/0.74/0.65%; T4, 0.94/0.80/0.70%; T5, 1.01/0.86/0.75%) during 22 to 56 d of age, respectively. The BW gain was linearly increased as dietary limiting AA levels increased to 1.20% lysine, 0.98% TSAA and 0.93% threonine. There were no significant differences in feed intake, gain:feed and uniformity among groups. In Exp. 2, the BW gain and gain:feed were not affected by dietary limiting AA levels. There were no significant differences in carcass characteristics and meat quality among groups. The growth performance and carcass characteristics did not show the significant response to increasing dietary limiting AA levels in KND during 22 to 56 d of age. In conclusion, the levels of lysine, TSAA and threonine necessary to maximize growth for starter phase were at least 1.20%, 0.98%, and 0.93%, respectively. On the other hands, KND require relatively low levels of limiting AA for late growth and carcass yield. The dietary levels of 0.73% lysine, 0.62% TSAA and 0.54% threonine appear to be adequate during growing phase.
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Affiliation(s)
- Y K Choo
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - H J Kwon
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - S T Oh
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - C W Kang
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - H K Kim
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - E C Hong
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - K N Heo
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
| | - S K Lee
- Department of Animal Products and Food Science, Kangwon National University, Chuncheon 200-701, Korea
| | - B K An
- Poultry Science Division, National Institute of Animal Science, RDA, Seonghwan 330-801, Korea
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Zhang LT, Kim HK, Choi BR, Zhao C, Lee SW, Jang KY, Park JK. Analysis of testicular-internal spermatic vein variation and the recreation of varicocoele in a Sprague-Dawley rat model. Andrology 2014; 2:466-73. [PMID: 24659569 DOI: 10.1111/j.2047-2927.2014.00201.x] [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: 08/30/2013] [Revised: 12/22/2013] [Accepted: 02/03/2014] [Indexed: 01/23/2023]
Abstract
Many laboratories tried to recreate the varicocoele model have met with varied success. To recreate a consistent varicocoele model by exploring the anatomic variability of the testicular-spermatic venous system in Sprague-Dawley (SD) rats. Seventy-two sexually mature SD male rats were randomly divided into three groups containing 24 rats per group. Partial ligation of the left renal vein and internal spermatic vein (ISV) communicating branches to common iliac vein and ISV communicating branches ligation (RVISVCBCIV) or partial ligation of the left renal vein and ISV communicating branches ligation (RVISVCB). The results showed that the mean diameter of the left ISV was significantly increased in the RVISVCBCIV group compared with the control and RVISVCB groups (p < 0.001). Using ISV as the reference, the sensitivity of varicocoele was 71.43%, and the specificity was 80%. In addition, the positive predictive value was 83.33%, and the negative predictive value was 66.67%. Sperm count, motility, Johnsen score and the spermatogenic cell density were lower in the RVISVCBCIV group compared with the control (p < 0.01). The apoptotic index was higher in the RVISVCBCIV group compared with control groups (p < 0.01). The RVISVCBCIV provides a more effective method for establishing a varicocoele-induced model.
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Affiliation(s)
- L T Zhang
- Department of Urology, Chonbuk National University Medical School and Institute for Medical Sciences, Chonbuk National University and Biomedical Research Institute and Clinical Trial Center for Medical Devices of Chonbuk National University Hospital, Jeonju, Korea
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Jeong YJ, Hong IH, Chung JK, Kim KL, Kim HK, Park SP. Predictors for the progression of geographic atrophy in patients with age-related macular degeneration: fundus autofluorescence study with modified fundus camera. Eye (Lond) 2014; 28:209-18. [PMID: 24458203 DOI: 10.1038/eye.2013.275] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 09/22/2013] [Indexed: 11/09/2022] Open
Abstract
PURPOSE We examined the association between abnormal fundus autofluorescence (FAF) features on images obtained by a modified fundus camera (mFC) and geographic atrophy (GA) progression in patients with age-related macular degeneration (AMD). METHODS Serial FAF images of 131 eyes from 131 patients with GA were included in the study. All FAF images were obtained with an mFC (excitation, ∼ 500-610 nm; emission, ∼ 675-715 nm). The GA area was quantified at baseline and 1 year later using a customized segmentation program. The yearly GA enlargement rate was then calculated. Abnormal FAF patterns in the junctional zone of GA were classified as None or Minimal change, Focal, Patchy, Banded, or Diffuse according to previously published classification based on confocal scanning laser ophthalmoscopy (cSLO). The relationship between GA enlargement and abnormal FAF was evaluated. RESULTS The mean rate of GA enlargement was the fastest in eyes with Diffuse pattern (1.74 mm(2) per year), followed by eyes with the Banded pattern (1.69 mm(2) per year). Binary logistic regression analysis revealed that eyes with the Banded and Diffuse pattern had significantly higher risk for GA enlargement compared with eyes with the other patterns. CONCLUSIONS FAF image obtained by mFC appears to be acceptable for evaluating GA in accordance with an established cSLO-based classification. Eyes with the Banded or the Diffuse patterns of abnormal FAF at baseline indicate a high risk for GA progression. Identifying patients at high risk for GA progression using an mFC is broadly available method that can provide additional information to help predict disease course.
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Affiliation(s)
- Y J Jeong
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - I H Hong
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - J K Chung
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - K L Kim
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - H K Kim
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - S P Park
- 1] Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea [2] Department of Ophthalmology, Columbia University Medical Center, New York, NY, USA
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Hwang MH, Yoo JK, Kim HK, Hwang CL, Mackay K, Hemstreet O, Nichols WW, Christou DD. Validity and reliability of aortic pulse wave velocity and augmentation index determined by the new cuff-based SphygmoCor Xcel. J Hum Hypertens 2014; 28:475-81. [PMID: 24430704 DOI: 10.1038/jhh.2013.144] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 10/01/2013] [Accepted: 10/23/2013] [Indexed: 11/09/2022]
Abstract
Aortic pulse wave velocity (AoPWV) and augmentation index (AIx) are commonly used measures of large elastic artery stiffness and wave reflection, respectively. Recently, a new cuff-based SphygmoCor device (Xcel) has been developed to measure both AoPWV and AIx. We sought to examine the following: (1) the validity of Xcel compared with the well-validated tonometry-based SphygmoCor device (MM3); (2) the intratest and day-to-day reliability of Xcel; (3) the influence of body side (right or left) on Xcel measurements; and (4) the relation of Xcel measurements to carotid artery compliance, distensibility and β-stiffness index. We found that measurements of AoPWV and AIx between Xcel and MM3 were not different (P=0.26 and P=0.43, N=22 and 26, respectively) and were strongly related (r=0.85 and 0.75, P<0.0001), and based on Bland-Altman plots there was good agreement between them. Intra-test (intraclass correlation=0.996 and 0.983, P<0.0001; AoPWV and AIx, N=24 and 26, respectively) and day-to-day reliability (intraclass correlation=0.979 and 0.939, P<0.0001) were high. Xcel AoPWV and AIx on the left versus right body side were not different (P=0.19 and P=0.58, N=14 and 15, respectively) and were highly correlated (r=0.99 and 0.94, P<0.0001). AoPWV and AIx measured with Xcel were positively related with β-stiffness index (r=0.62 and 0.51, P< or = 0.005, N=23 and 24, respectively) and negatively related with distensibility (r = -0.58 and -0.44, P < or = 0.02, N=23 and 24, respectively). In conclusion, Xcel measures of AIx and AoPWV are valid, highly reliable and not affected by body side. Xcel is a useful tool for use in research and the clinic.
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Affiliation(s)
- M H Hwang
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - J K Yoo
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - H K Kim
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - C L Hwang
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - K Mackay
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - O Hemstreet
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - W W Nichols
- Division of Cardiovascular Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | - D D Christou
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
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Lee SJ, Yeo SG, Kim HK, Park DC. Paraneoplastic arthritis mimicking rheumatoid arthritis in cervical cancer. EUR J GYNAECOL ONCOL 2014; 35:728-730. [PMID: 25556282] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Paraneoplastic arthritis, a subcategory ofparaneoplastic syndrome, presents in a similar manner to rheumatic disorder and usually precedes the detection of the primary tumor by years. Herein, the authors report a case of a patient who was diagnosed with parane- oplastic rheumatoid arthritis (RA)-like arthritis with synchronous cervical cancer. A 38-year-old nulligravida woman was admitted to the gynecology department with a three-month history of irregular vaginal spotting accompanied by severe multiple joint pain. She had a one-year history of RA, for which she had been receiving treatment. During the early stage of treatment, her symptoms were slightly improved by RA treatment; however, after eight months of treatment, she showed absolute resistance to RA treatments and complained of a profuse vaginal discharge with severe foul odor. After colposcopy-directed punch biopsy, she was diagnosed with Stage IIA2 squamous cell carcinoma of the cervix. She underwent radical hysterectomy with lymphadenectomy without complications. After treatment, the multiple joint pain associated with paraneoplastic arthritis spontaneously disappeared. There was no evidence of malignancy according to the follow-up cervical cytology report, magnetic resonance imaging, and positron emission tomography-computed tomography.
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Affiliation(s)
- S J Lee
- Department of Obstetrics and Gynecology, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea
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Lim EA, Gunther JE, Flexman M, Kim HK, Hibshoosh H, Kalinsky K, Crew K, Maurer M, Taback B, Feldman S, Ananthakrishnan P, Refice S, Brown M, Hielscher A, Hershman DL. Abstract P4-01-14: Two-week change in optical tomography predicts residual cancer burden score in women treated with neoadjuvant chemotherapy. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p4-01-14] [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
Background: A low Residual Cancer Burden (RCB) score after neoadjuvant chemotherapy (NACT) predicts an improved survival in patients (pts) with breast cancer (BC). While an early predictor of tumor response to NACT would allow for treatment optimization, no ideal method exists. Diffuse optical tomography (DOT) is a novel, fast, and low-cost imaging approach that assesses the distribution of water (H2O), oxyhemoglobin (HbO), and deoxyhemoglobin (Hb) concentrations, as a measure of tissue vascularity, without the use of ionizing radiation or breast compression, allowing for safe repeated measurements. We hypothesize that changes in DOT parameters will predict the RCB score following NACT.
Methods: Women with stage II-IIIc invasive BC scheduled to undergo NACT with 12 cycles of a weekly taxane followed by 4 cycles of doxorubicin with cyclophosphamide were enrolled. Treatment with biologic therapies was allowed. DOT assessments were made before starting NACT, 2 weeks into treatment, and before surgery. DOT data were reconstructed into 3D images of the tumor region, from which HbO, Hb, and H2O concentrations were extracted. Final pathology specimens were scored for the RCB index (continuous measure), RCB class (0, 1, 2, 3), and a dichotomized RCB score (RCB class 0 or 1: responders to NACT; RCB class 2 or 3: non-responders). Ki-67 was measured on baseline tumor biopsies and surgical specimens. Correlation analysis, ANOVA testing, and two sample t-tests were used to evaluate the relationship between the 2-week changes in DOT parameters and the RCB score and Ki-67 level.
Results: Since July 2011, we have recruited 24 pts of a total planned accrual of 40. 19 pts have undergone surgery and complete data is available for 13 at this time. Of the 13 pts, 4 had a pCR (RCB 0), 2 had RCB 1, 6 had RCB 2, and 1 had RCB 3. The Pearson correlations between the 2-week change in HbO, Hb, and H2O with the continuous RCB index were 0.76 (p = 0.0022), 0.87 (p = 0.0001), and 0.74 (p = 0.0038), respectively. There was a significant difference in the 2-week Hb change for pts with RCB 0 compared to pts with RCB 1, 2, or 3. There were significant differences in the 2-week change in H2O and HbO for pts with RCB 0 compared to pts with RCB 2. There were also significant differences between DOT parameters by the dichotomized RCB score (table 1). Ki-67 change was correlated with 2-week H2O change (Pearson r = 0.61 p = 0.045).
2-week DOT% change by RCB class and dichotomized RCB score HbOHbOH2ORCB 0-38%-28.5%-6.7%RCB 1-3.9%-2.9%-0.2%RCB 2+2.3%-0.6%+0.7%RCB 3+1.0%+10.9%-0.4% Responders (RCB 0/1)-26.6%-20%-4.5%Non-Responders (RCB 2/3)+2.1%+1%+0.6%P value0.010.00690.014
Conclusions: Two-week DOT change is an early predictor of response to NACT as measured by the RCB score. We found significant associations between the RCB index and Ki-67 with 2-week changes in HbO, Hb, and H2O. Significantly different changes in DOT parameters were associated with the other RCB classifications. We are analyzing DOT data on the remaining pts and will conduct biomarker assessments of microvessel density changes. Additional pts are being recruited to evaluate DOT's predictive ability by tumor subtype.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P4-01-14.
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Affiliation(s)
- EA Lim
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - JE Gunther
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - M Flexman
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - HK Kim
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - H Hibshoosh
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - K Kalinsky
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - K Crew
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - M Maurer
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - B Taback
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - S Feldman
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - P Ananthakrishnan
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - S Refice
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - M Brown
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - A Hielscher
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
| | - DL Hershman
- Internal Medicine - Columbia University Medical Center, New York, NY; Herbert Irving Comprehensive Cancer Center, New York, NY; Biomedical Engineering - Columbia University, New York, NY; Philips Corporation, Tarrytown, NY; Columiba University, New York, NY; Epidemiology - Mailman School of Public Health, New York, NY; Columbia University Medical Center, New York, NY; Columbia University School of Nursing, New York, NY; Electrical Engineering – Columbia University, New York, NY
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