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Ghatan C, Johnson D, Kondo K, Kang F, Ray C, Ryu R. Selective DEE-TACE in the setting of elevated serum total bilirubin: Clinical factors that predict outcomes and safety. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Uh K, Ryu J, Ray C, Lee K. 91 DISRUPTION OF TET1 DURING PORCINE EMBRYOGENESIS USING CRISPR/Cas9 SYSTEM. Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1ab91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ten-eleven translocation (TET) enzymes catalyse oxidation of 5-methylcytosine to 5-hydroxymethyl cytosine. This TET-mediated conversion of 5-methylcytosine to 5-hydroxymethyl cytosine is implicated in initiating the DNA demethylation process, observed post-fertilization. Three members (TET1–3) of the TET family are differentially expressed during embryo development and appear to have different roles. Previous studies in mice suggest that TET1 is a key regulator in maintaining pluripotency in embryonic stem cells by managing epigenetic marks such as DNA methylation. This would imply that TET1 should be a regulator of epigenetic marks during embryo development, although this has not been demonstrated. Previously, we have cloned porcine TET1 from blastocysts (GenBank accession number KC137683) and demonstrated that the level of TET1 (mRNA and protein) was high in blastocysts. The protein level was greater in the inner cell mass compared with the trophectoderm. In this study, we generated TET1 knockout porcine embryos using CRISPR/Cas9 system to study the role of TET1 in controlling epigenetic marks during porcine embryo development. First, 2 sgRNA, immediately downstream of the presumable translation initiation site, were designed and synthesised; location of the sgRNA were nucleotide position at 2 to 21 bp and 23 to 42 bp, respectively (KC137683). Then, sgRNA (10 ng μL−1 each) and Cas9 mRNA (20 ng μL−1) were injected into the cytoplasm of IVF zygotes, and Day 7 blastocysts were genotyped. All embryos carried mutations on both alleles of TET1 (10/10), one homozygous and 9 biallelic mutations. However, immunocytochemistry analysis of other CRISPR/Cas9 injected embryos revealed that TET1 was not removed (10/10), indicating that the sgRNA may have not introduced a premature stop codon 3′ to the presumable translation initiation site. Therefore, 2 new sgRNA were designed to generate a premature stop codon at the 5′ side of a key functional domain, the 2-oxoglutarate-Fe(II)-dependent oxygenase domain (4690 to 5160 bp); the locations of the 2 sgRNA were 4450 to 4469 bp and 4501 to 4520 bp, respectively. Similarly, all of the embryos carried mutations in TET1 (7/7), 2 homozygous and 5 biallelic mutations. In addition, TET1 proteins were not detected in 11 of 16 blastocysts, confirmed by immunocytochemistry. In this study, we successfully generated embryos lacking TET1 by introducing designed CRISPR/Cas9 system during embryogenesis. Presence of TET1 from the first injection experiment suggests that the presumable translation initiation site is not accurate. Discrepancy between genotyping and immunocytochemistry results from the second injection experiment indicates that embryos possessing TET1 protein probably have mutations in triplets, thus no premature stop codon was synthesised. Further studies will focus on identifying the role of TET1 in maintaining pluripotency and epigenetic modification during pre-implantation stage using these embryos.
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Ray C, Määttä S, Lehto R, Kaukonen R, Sajaniemi N, Erkkola M, Roos E. Developing an intervention to diminish socioeconomic differences in health behaviors in preschool. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw174.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ray C, Ferris D, Braun K. Expanding the global health workforce through resident education in
Obstetrics & Gynecology: The Medical College of Georgia
experience. Ann Glob Health 2016. [DOI: 10.1016/j.aogh.2016.04.348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Lehto R, Mäki P, Ray C, Laatikainen T, Roos E. Childcare use and overweight in Finland: cross-sectional and retrospective associations among 3- and 5-year-old children. Pediatr Obes 2016; 11:136-43. [PMID: 25955215 DOI: 10.1111/ijpo.12036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 03/24/2015] [Accepted: 03/26/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Different types of non-parental childcare have been found to associate with childhood overweight in several, but not all studies. Studies on the matter are mainly North American. OBJECTIVES The objective of our study was to examine associations between childcare use and overweight in Finland. METHODS The cross-sectional and partly retrospective data consists of 1683 3- and 5-year-old children participating in the Child Health Monitoring Development project (LATE-project) conducted in 2007-2009 in Finland. Children were measured at health check-ups and information on child's age when entering childcare, the number of childcare places the child has had, current type of childcare (parental, informal, [group] family childcare, childcare centre) and the current amount of childcare (hours) were gathered. Parents' body mass indices, family educational level, family structure, maternal smoking during pregnancy and child's birth weight were treated as covariates. RESULTS Beginning childcare before age 1 (adjusted model: odds ratio [OR] 2.53, 95% confidence interval [CI] 1.41-4.52) and, for girls only, number of childcare places (adjusted model: OR 1.33, 95% CI 1.11-1.60), were associated with an increased risk of overweight. The current type of childcare or the time currently spent in childcare was not associated with overweight. CONCLUSION Beginning childcare before age 1, which is quite rare in Finland, and having attended several childcare places were associated with overweight even when adjusting for family socioeconomic status and other family background variables. The significance of these findings needs to be further studied.
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Gunasekaran S, Bui J, Lokken R, Ray C, Gaba R. Anatomic variations of the right portal vein: prevalence, imaging features, and implications for successful transjugular intrahepatic portosystemic shunt creation. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Pinto M, De Rydt M, Dauvergne D, Dedes G, Freud N, Krimmer J, Létang JM, Ray C, Testa E, Testa M. Technical Note: Experimental carbon ion range verification in inhomogeneous phantoms using prompt gammas. Med Phys 2015; 42:2342-6. [DOI: 10.1118/1.4917225] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Pinto M, Bajard M, Brons S, Chevallier M, Dauvergne D, Dedes G, De Rydt M, Freud N, Krimmer J, La Tessa C, Létang JM, Parodi K, Pleskač R, Prieels D, Ray C, Rinaldi I, Roellinghoff F, Schardt D, Testa E, Testa M. Absolute prompt-gamma yield measurements for ion beam therapy monitoring. Phys Med Biol 2014; 60:565-94. [DOI: 10.1088/0031-9155/60/2/565] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pinto M, Dauvergne D, Freud N, Krimmer J, Letang JM, Ray C, Roellinghoff F, Testa E. Design optimisation of a TOF-based collimated camera prototype for online hadrontherapy monitoring. Phys Med Biol 2014; 59:7653-74. [DOI: 10.1088/0031-9155/59/24/7653] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dedes G, Pinto M, Dauvergne D, Freud N, Krimmer J, Létang JM, Ray C, Testa E. Assessment and improvements of Geant4 hadronic models in the context of prompt-gamma hadrontherapy monitoring. Phys Med Biol 2014; 59:1747-72. [DOI: 10.1088/0031-9155/59/7/1747] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Roellinghoff F, Benilov A, Dauvergne D, Dedes G, Freud N, Janssens G, Krimmer J, Létang JM, Pinto M, Prieels D, Ray C, Smeets J, Stichelbaut F, Testa E. Real-time proton beam range monitoring by means of prompt-gamma detection with a collimated camera. Phys Med Biol 2014; 59:1327-38. [DOI: 10.1088/0031-9155/59/5/1327] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ley JL, Dahoumane M, Dauvergne D, Freud N, Joly B, Krimmer J, Létang J, Lestand L, Mathez H, Montarou G, Ray C, Richard M.H, Testa E, Zoccarato Y. 122: Development of a Time-Of-Flight Compton Camera for Online Control of Ion Therapy. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34143-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dedes G, Pinto M, Dauvergne D, Freud N, Krimmer J, Michel Létang J, Ray C, Testa E. 52: Assessment and improvements of Geant4 models in the context of prompt-gamma hadrontherapy monitoring. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34073-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Krimmer J, Caponetto L, Chen X, Chevallier M, Dauvergne D, De Rydt M, Deng S, Ley JL, Mathez H, Ray C, Reithinger V, Testa E, Zoccarato Y. 111: Real-time monitoring of the ion range during hadrontherapy: An update on the beam tagging hodoscope. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)34132-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Rescigno R, Finck C, Juliani D, Baudot J, Dauvergne D, Dedes G, Krimmer J, Ray C, Reithinger V, Rousseau M, Testa E, Winter M. Simulation toolkit with CMOS detector in the framework of hadrontherapy. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146610013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lehto R, Määttä S, Lehto E, Ray C, Roos E, te Velde S, Thorsdottir I, Lien N, Yngve A. Mediating factors and impact of the degree of implementation in a school-based fruit and vegetable intervention in Finland. Eur J Public Health 2013. [DOI: 10.1093/eurpub/ckt126.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gueth P, Dauvergne D, Freud N, Létang JM, Ray C, Testa E, Sarrut D. Machine learning-based patient specific prompt-gamma dose monitoring in proton therapy. Phys Med Biol 2013; 58:4563-77. [DOI: 10.1088/0031-9155/58/13/4563] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Cuddington K, Fortin MJ, Gerber LR, Hastings A, Liebhold A, O'Connor M, Ray C. Process-based models are required to manage ecological systems in a changing world. Ecosphere 2013. [DOI: 10.1890/es12-00178.1] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Henriquet P, Testa E, Chevallier M, Dauvergne D, Dedes G, Freud N, Krimmer J, Létang JM, Ray C, Richard MH, Sauli F. Interaction vertex imaging (IVI) for carbon ion therapy monitoring: a feasibility study. Phys Med Biol 2012; 57:4655-69. [DOI: 10.1088/0031-9155/57/14/4655] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Testa E, Chevallier M, Dauvergne D, Dedes G, De Rydt M, Freud N, Krimmer J, Henriquet P, Letang J, Ray C, Reithinger V, Richard M. 240 SPATIAL CORRELATIONS BETWEEN IMAGES DERIVED FROM DYNAMIC FDG-PET. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70207-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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De Rydt M, Chevallier M, Dauvergne D, Deng S, Dedes G, Freud N, Krimmer J, Létang JM, Mattez H, Pinto M, Ray C, Richard MH, Roellinghoff F, Reithinger V, Testa E, Zoccaratto Y. 136 REAL-TIME MONITORING OF THE BRAGG PEAK DURING ION THERAPY: RECENT DEVELOPMENTS OF THE BEAM DETECTION SYSTEM. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70108-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Roellinghoff F, Benilov A, Dauvergne D, Dedes G, Freud N, Krimmer J, Létang J, Prieels D, Ray C, Richard M, Smeets J, Stichelbaut F, Testa E. 235 REAL-TIME PROTON BEAM RANGE MONITORING BY MEANS OF PROMPT-GAMMA DETECTION WITH A COLLIMATED CAMERA. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70203-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Krimmer J, Constanzo J, Dahoumane M, De Rydt M, Dauvergne D, Dedes G, Freud N, Létang J, Pinto M, Ray C, Richard M, Reithinger V, Roellinghoff F, Testa E, Walenta A. 155 PROGRESS IN USING PROMPT GAMMAS FOR ION RANGE MONITORING DURING HADRON-THERAPY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70127-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Qandeel H, Abudeeb H, Hammad A, Ray C, Sajid M, Mahmud S. Clostridium perfringens sepsis and liver abscess following laparoscopic cholecystectomy. J Surg Case Rep 2012; 2012:5. [PMID: 24960720 PMCID: PMC3649454 DOI: 10.1093/jscr/2012.1.5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Clostridium perfringens sepsis with intravascular haemolysis is a catastrophic process with a reported mortality of between 90 to 100%. We successfully treated a case of severe clostridial infection with a liver abscess following laparoscopic cholecystectomy, the first to our knowledge. A 59-year-old man presented one week after an uneventful laparoscopic cholecystectomy with jaundice, peritonism, sepsis and acute renal failure. He was found to have a haemolytic anaemia, unconjugated hyperbilirubinemia and blood cultures grew Clostridium perfringens. A CT revealed a large gas forming abscess in the gallbladder fossa and right lobe of liver. He was treated with directed antibiotic therapy and underwent emergency laparotomy, drainage of the abscess and peritoneal washout. He required intensive care support, parenteral nutrition and inotropic support for a limited period. CT liver angiogram post op was normal. Continued renal dysfunction necessitated protracted haemofiltration. This resolved and the patient was discharged home at 2 months.
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Stenberg B, Talbot D, Khurram M, Kanwar A, Ray C, Mownah O, White K, Elliott ST. A new technique for assessing renal transplant perfusion preoperatively using contrast-enhanced ultrasound (CEUS) and three-dimensional ultrasound (3DUS)--a porcine model pilot study. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2011; 32 Suppl 2:E8-E13. [PMID: 22179806 DOI: 10.1055/s-0031-1281650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PURPOSE This pilot study aims to assess the viability of using contrast-enhanced ultrasound (CEUS) in renal grafts while they are on hypothermic perfusion machines prior to transplantation. We assessed the vascularity and renal perfusion of machine-perfused porcine kidneys (Maastricht category II) using CEUS. MATERIALS AND METHODS Five kidneys were placed on hypothermic machine perfusion for up to 24 hours after retrieval. The kidneys were then scanned with a low MI contrast-specific preset and a bolus of 0.5 ml of Sonovue contrast agent was administered. Contrast-specific ultrasound images of the kidney were acquired in 2D and 3D. RESULTS The five kidneys demonstrated variable flow rates on the perfusion machine (10 - 37 ml/min at 30 mmHg). The CEUS technique demonstrated good perfusion and flow patterns, similar to those seen in vivo, in four kidneys. One kidney had patent arteries up to the interlobar region but no contrast filling in the cortex or medulla. Small perfusion defects were seen in two of the perfused kidneys. CONCLUSION CEUS appears to be a viable technique for assessing global perfusion and small defects within kidneys prior to transplantation. The flow patterns seen in vitro appear to correspond to those seen in vivo. Further work is required to evaluate the relevance of the flow dynamics measured.
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