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Kim KS, Choi YH, Lee IR, Kwon BM, Lee SH. A novel nortriterpene fromHedera rhombea. Arch Pharm Res 2012; 20:191-3. [PMID: 18975200 DOI: 10.1007/bf02974009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/1996] [Indexed: 10/21/2022]
Abstract
A new nortriterpene, rhombenone (1) was isolated from the leaves ofHedera rhombea Bean (Araliaceae). The structure of this compound was established as 27-demethyl-20(S)-dammar-23-ene-6alpha,20-diol-3,25-dione on the basis of spectral analysis including HMQC and HMBC techniques. Rhombenone (1) was the first 27-demethyl nortriterpene of dammarance type isolated from natural sources.
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77
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Jayasooriya RGTP, Kang CH, Park SY, Choi YH, Moon DO, Kim GY. Methanol Extract of Polyopes lancifolius Inhibits the Expression of Pro-inflammatory Mediators in LPSstimulated BV2 Microglia Cells via Downregulation of the NF-κB Pathway. TROP J PHARM RES 2012. [DOI: 10.4314/tjpr.v11i1.6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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78
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Kuhn EW, Liakopoulos OJ, Brehmer L, Slottosch I, Deppe AC, Choi YH, Wippermann J, Wahlers T. Myocardial protection with warm versus cold blood cardioplegia in patients with prolonged aortic cross-clamp times during isolated cardiac surgery. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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79
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Roy R, Kukucka M, Messroghli D, Brodarac A, Becher M, Choi YH, Tschöpe C, Stamm C. Placenta-derived mesenchymal stem cells for allogenic cardiac cell therapy. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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80
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Kukucka M, Roy R, Messroghli D, Tschöpe C, Nasseri B, Choi YH, Stamm C. Assessing LV function in small animal models: Is MRI always superior to echocardiography? Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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81
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Madershahian N, Scherner M, Liakopoulos O, Müller-Ehmsen J, Strauch J, Hoppe UC, Choi YH, Wahlers T. The effect of intraoperative tranexamic acid administration on postoperative blood loss after transapical aortic valve implantation. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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82
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Deppe AC, Liakopoulos OJ, Kuhn EW, Slottosch I, Geissen J, Choi YH, Neef K, Wahlers T. In-vivo and in-vitro effects of short-term statin pretreatment on coronary relaxation and injury. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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83
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Slottosch I, Liakopoulos O, Kuhn E, Deppe A, Schwarz D, Lopez A, Choi YH, Jung K, Mühlfeld C, Wahlers T. Controlled lung reperfusion for prevention of CPB-related pulmonary dysfunction. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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84
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Sabashnikov A, Choi YH, Rahmanian PB, Zeriouh M, Mehler TO, Wahlers T, Wittwer T. Outcomes in patients undergoing surgery with a minimized extracorporeal circulation compared to off pump revascularization. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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85
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Neef K, Drey F, Lenerz V, Saric T, Liakopoulos OJ, Stamm C, Wittwer T, Wahlers T, Choi YH. Co-Transplantation of iPS-derived cardiomyocytes and mesenchymal stem cells for the regeneration of infarcted myocardium. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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86
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Slottosch I, Liakopoulos O, Kuhn E, Deppe A, Stange S, Choi YH, Wahlers T. ECMO therapy in patients undergoing emergency CABG for acute myocardial infarction. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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87
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Roy R, Brodarac A, Kukucka M, Messroghli D, Hetzer R, Choi YH, Stamm C. Mesenchymal transition of Amnion epithelial cells for improved cardiac repair in vivo. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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88
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Kuhn EW, Choi YH, Pyun J, Neef K, Liakopoulos OJ, Slottosch I, Wittwer T, Wahlers T. Circulating endothelial cells – a super-sensitive marker of myocardial injury indicating superior myocardial protection for intermittent cold versus warm blood cardioplegia in patients undergoing CABG surgery. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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89
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Oberwallner B, Anic P, Brodarac A, Choi YH, Stamm C. Interactions between myocardial extracellular matrix and somatic and pluripotent stem cells- Implications for cardiac cell therapy. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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90
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Deppe AC, Liakopoulos OJ, Slottosch I, Kuhn EW, Stange S, Choi YH, Wahlers T. Endoscopic vein harvesting improves leg wound related morbidity and might impair graft patency: A systematic literature review with meta-analysis. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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91
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Neef K, Kumar S, Treskes P, Adelmann R, Khalil M, Stamm C, Wittwer T, Wahlers T, Choi YH. Mechanical preconditioning enables electrophysiological coupling of skeletal myoblast cells to myocardium. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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92
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Slottosch I, Liakopoulos OJ, Staupendahl L, Kuhn EW, Deppe AC, Choi YH, Wippermann J, Wahlers T. Comparison of warm versus cold blood cardioplegia for patients undergoing urgent coronary artery bypass grafting for acute coronary syndrome. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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93
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Klose K, Roy R, Brodarac A, Kyung-Sun K, Nasseri B, Choi YH, Kurtz A, Stamm C. When neonatal stem cells meet a failing heart: Impact of heart failure serum factors on cord blood mesenchymal stem cells. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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94
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Stange S, Liakopoulos OJ, Kuhn EW, Deppe AC, Choi YH, Slottosch I, Wahlers T. Statin use and clinical outcomes after cardiac surgery: a meta-analysis of over 90.000 patients. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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95
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Bader A, Brodarac A, Hetzer R, Choi YH, Stamm C. Paracrine effects of cord blood-mesenchymal stem cells on apoptotic events and cell death of postischaemic HL-1 cardiomyocytes. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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96
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Slottosch I, Liakopoulos O, Staupendahl L, Kuhn E, Deppe A, Choi YH, Madershahian N, Wahlers T. IABP therapy in patients undergoing urgent coronary artery bypass grafting for acute coronary syndrome. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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97
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Passaloglou IT, Zeriouh M, Liakopoulos OJ, Holst J, Holst HT, Wittwer T, Wippermann J, Choi YH, Wahlers T. Intermittent cold blood cardioplegia compared to intermittent warm blood cardioplegia and Bretschneider cardioplegia in elective aortic valve replacement. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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98
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Choi YH, Neef K, Treskes P, Kumar S, Stamm C, Rahmanian PB, Liakopoulos OJ, Wittwer T, Wahlers T. Enrichment of cardiogenic cell populations from murine skeletal muscle. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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99
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Scherner M, Reutter S, Klemm D, Sterner-Kock A, Choi YH, Wahlers T, Wippermann J. In vivo application of tissue-engineered blood vessels of bacterial cellulose as small arterial substitutes: Proof of concept. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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100
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Choi YH, Penedo MCT, Daftari P, Velez IC, Hinrichs K. 102 ACCURACY OF PRE-IMPLANTATION GENETIC DIAGNOSIS USING CELLS BIOPSIED FROM EQUINE BLASTOCYSTS. Reprod Fertil Dev 2012. [DOI: 10.1071/rdv24n1ab102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
There is growing interest in pre-implantation genetic diagnosis (PGD) for management of inherited genetic disease in the horse. In a previous study (Choi et al. 2010 Reproduction 140, 893–902), we demonstrated normal viability of equine blastocysts after biopsy. However, genome amplification was only moderately successful and only 1 of 2 analyses of heterozygous loci accurately detected both alleles. In the current study, we investigated different methods for amplification of DNA to improve the efficiency of PGD. To evaluate allele drop-out, multiple commonly-heterozygous gene loci were evaluated. In Experiment 1, using a piezo drill, 3 to 5 biopsy samples of 20 to 30 cells each were obtained from each of 4 in vitro-produced blastocysts. The samples and embryos were stored at –20°C, then shipped to the Veterinary Genetics Laboratory at the University of California, Davis. Whole genome amplification was done with an Illustra Genomiphi V2 kit (GE Healthcare, Waukesha, WI) before PCR for specific markers. Two disease-related (SCN4A and PPIB), one gender (AME) and 17 microsatellite identification markers were genotyped, for a total of 20 loci. Results for biopsy samples were compared with those for the corresponding embryo. A DNA signal was obtained from 14/15 biopsy samples, but for only 59.6% of the 280 total genotypes. Of 40 heterozygous loci, the signal from the corresponding biopsy sample showed only one allele (underwent allele dropout) in 60/80 instances (75%). In Experiment 2, 4 biopsies were obtained from each of 4 additional in vitro-produced blastocysts, then all samples were stored at –20°C. The Repli-G Mid kit (Qiagen, Valencia, CA) was used for whole genome amplification. Two disease-related (SCN4A and PPIB), 2 gender (AME and eSRY), 10 coat colour and 17 identification markers (total of 31 loci) were examined in each biopsy sample and were compared with results for the embryos. One biopsy sample was lost. Signal was obtained from 14/15 of the remaining biopsy samples and gave a 100% match at the 2 gender loci, 2 disease-related loci and 10 coat colour loci. One identification locus, LEX33, amplified in only 8 of 22 analyses. At the remaining 16 identification loci, 223/224 biopsy results matched those for the embryos. Overall, of 51 heterozygous loci among the 4 embryos, biopsy samples exhibited allele dropout in 1/180 instances (0.6%). In conclusion, results obtained using piezo-driven embryo biopsy and whole genome amplification using the Qiagen Repli-G kit have high accuracy and this technique may be suitable for use in a clinical setting. Further studies are needed with in vivo-derived embryos and to optimize accuracy of PCR of some identification markers.
This work was supported by the American Quarter Horse Foundation, the Link Equine Research Endowment Fund, Texas A&M University and by Ms Kit Knotts.
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