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Just PA, Audebourg A, Pasmant E, Clauser E, Carlotti A, Laurent S, Avril MF, Vacher-Lavenu MC, Vidaud M, Terris B. L’immuno-histochimie pour le diagnostic positif de la mutation BRAF V600E dans le mélanome cutané. Ann Pathol 2014. [DOI: 10.1016/j.annpat.2014.08.008] [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]
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Deleporte A, Eynde MVD, Forget F, Holbrechts S, Delaunoit T, Houbiers G, Kalantari HR, Laurent S, Vanderstraeten E, De Man M, Vergauwe P, Clausse M, Vanderauwera J, Pierre P, D'Hondt L, Ghillemijn B, Covas A, Paesmans M, Ameye L, Hendlisz A. Weekly Versus Biweekly Combination of Docetaxel (D)-Cisplatin (C)-5Fu (F) in Advanced Gastric Cancer and Esogastric Junction Adenocarcinoma (Agc): Doge Study. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.9] [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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Ferrier-Barbut I, Delehaye M, Laurent S, Grier AT, Pierce M, Rem BS, Chevy F, Salomon C. A mixture of Bose and Fermi superfluids. Science 2014; 345:1035-8. [DOI: 10.1126/science.1255380] [Citation(s) in RCA: 195] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Montalti R, Berardi G, Laurent S, Sebastiani S, Ferdinande L, Libbrecht LJ, Smeets P, Brescia A, Rogiers X, de Hemptinne B, Geboes K, Troisi RI. Laparoscopic liver resection compared to open approach in patients with colorectal liver metastases improves further resectability: Oncological outcomes of a case-control matched-pairs analysis. Eur J Surg Oncol 2014; 40:536-544. [PMID: 24555996 DOI: 10.1016/j.ejso.2014.01.005] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 12/23/2013] [Accepted: 01/05/2014] [Indexed: 02/07/2023] Open
Abstract
AIMS Liver resection is considered the standard treatment of colorectal metastases (CRLM). However, to date, no long term oncological results and data regarding repeat hepatectomy after laparoscopic approach are known. The aim of this study is to analyze single center long-term surgical and oncological outcomes after liver resection for CRLM. METHODS A total of 57 open resections (OR) were matched with 57 laparoscopic resections (LR) for CRLM. Matching was based mainly on number of metastases, tumor size, segmental position of lesions, type of hepatectomy and type of resection. RESULTS Morbidity rate was significantly less in the LR group (p = 0.002); the length of hospital stay was 6.5 ± 5 days for the LR group and 9.2 ± 4 days for the OR group (p = 0.005). After a median follow up of 53.7 months for the OR group and 40.9 months for the LR group, the 5-y overall survival rate was 65% and 60% respectively (p = 0.36) and the 5-y disease free survival rate was 38% and 29% respectively (p = 0.24). More patients in the LR group received a third hepatectomy for CRLM relapse than in the OR group (80% vs. 14.3% respectively; p = 0.015). CONCLUSIONS Laparoscopic resection for CRLM offers advantages in terms of reduced blood loss, morbidity rate and hospital stay. It provides comparable long-term oncological outcomes but can improve further resectability in patients with recurrent disease.
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Montalti R, Berardi G, Laurent S, Sebastiani S, Ferdinande L, Libbrecht LJ, Smeets P, Brescia A, Rogiers X, de Hemptinne B, Geboes K, Troisi RI. Laparoscopic liver resection compared to open approach in patients with colorectal liver metastases improves further resectability: Oncological outcomes of a case-control matched-pairs analysis. Eur J Surg Oncol 2014. [PMID: 24555996 DOI: 10.1016/j.ejso.2014.01.005.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
AIMS Liver resection is considered the standard treatment of colorectal metastases (CRLM). However, to date, no long term oncological results and data regarding repeat hepatectomy after laparoscopic approach are known. The aim of this study is to analyze single center long-term surgical and oncological outcomes after liver resection for CRLM. METHODS A total of 57 open resections (OR) were matched with 57 laparoscopic resections (LR) for CRLM. Matching was based mainly on number of metastases, tumor size, segmental position of lesions, type of hepatectomy and type of resection. RESULTS Morbidity rate was significantly less in the LR group (p = 0.002); the length of hospital stay was 6.5 ± 5 days for the LR group and 9.2 ± 4 days for the OR group (p = 0.005). After a median follow up of 53.7 months for the OR group and 40.9 months for the LR group, the 5-y overall survival rate was 65% and 60% respectively (p = 0.36) and the 5-y disease free survival rate was 38% and 29% respectively (p = 0.24). More patients in the LR group received a third hepatectomy for CRLM relapse than in the OR group (80% vs. 14.3% respectively; p = 0.015). CONCLUSIONS Laparoscopic resection for CRLM offers advantages in terms of reduced blood loss, morbidity rate and hospital stay. It provides comparable long-term oncological outcomes but can improve further resectability in patients with recurrent disease.
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Bossuyt J, Engelen L, Ferreira I, Stehouwer C, Boutouyrie P, Laurent S, Segers P, Reesink K, Van Bortel L. 4.1 NORMAL VALUES AND DETERMINANTS OF FEMORAL ARTERY STIFFNESS. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.069] [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] Open
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Cunha P, Cotter J, Oliveira P, Vila I, Boutouyrie P, Laurent S, Nilsson P, Scuteri A, Sousa N. 5.4 PULSE WAVE VELOCITY DISTRIBUTION IN A COHORT STUDY–FROM ARTERIAL STIFFNESS TO EARLY VASCULAR AGEING (EVA). Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.078] [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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Laurent S. CROSS-SECTIONAL ARTERIAL MECHANICS: THE RENAISSANCE. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Scuteri A, Cunha P, Cockroft J, Cucca F, Laurent S, Raso F, Muiesan M, Rietzschel E, Ryliskyte L, Vlachopoulos C, Nilsson P, Lakatta E. P10.1 ARTERIAL STIFFNESS AND THE “PHENOTYPE” METABOLIC SYNDROME: A CROSS-COUNTRY STUDY. THE MARE CONSORTIUM. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Hoang P, Laurent S, Franck M, Jeunemaitre X, Boutouyrie P. P1.10 LONGITUDINAL CHANGES IN GEOMETRIC AND FUNCTIONAL ARTERIAL PROPERTIES IN VASCULAR EHLERS-DANLOS SYNDROME WITH CELIPROLOL. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Van Sloten T, Laurent S, Engelen L, Boutouyrie P, Stehouwer C. 2.3 LOCAL STIFFNESS OF THE CAROTID ARTERY IS ASSOCIATED WITH INCIDENT CARDIOVASCULAR EVENTS AND ALL-CAUSE MORTALITY–A SYSTEMATIC REVIEW AND META-ANALYSIS. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Alivon M, Blanchet B, Vidal M, Goldwasser F, Laurent S, Boutouyrie P. 5.5 RELATIONSHIP BETWEEN LARGE ARTERIES CHANGES, ANTIANGIOGENIC DRUGS PHARMACOKINETICS AND CANCER RESPONSE. Artery Res 2014. [DOI: 10.1016/j.artres.2014.09.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Borbath I, Ceratti A, Verslype C, Demols A, Delaunoit T, Laurent S, Deleporte A, Vergauwe P, Van Maanen A, Sempoux C, Van Cutsem E, Van Laethem J. Combination of gemcitabine and cetuximab in patients with advanced cholangiocarcinoma: a phase II study of the Belgian Group of Digestive Oncology. Ann Oncol 2013; 24:2824-9. [DOI: 10.1093/annonc/mdt337] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Queirolo P, Morabito A, Laurent S, Lastraioli S, Piccioli P, Ascierto PA, Gentilcore G, Serra M, Marasco A, Tornari E, Dozin B, Pistillo MP. Association of CTLA-4 polymorphisms with improved overall survival in melanoma patients treated with CTLA-4 blockade: a pilot study. Cancer Invest 2013; 31:336-45. [PMID: 23641913 DOI: 10.3109/07357907.2013.793699] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
CTLA-4 blockade with monoclonal antibodies can lead to cancer regression in patients with metastatic melanoma (MM). CTLA-4 gene polymorphisms may influence the response to anti-CTLA-4 antibodies although few data are available regarding this issue. We analyzed six CTLA-4 single nucleotide polymorphisms (-1661A > G, -1577G > A, -658C > T, -319C > T, +49A > G, and CT60G > A) in 14 Italian MM patients and 45 healthy subjects. We found a significant association between the -1577G/A and CT60G/A genotypes and improved overall survival (Pc < 0.006, Bonferroni corrected), further confirmed by the diplotype analysis (-1577 & CT60 GG-AA diplotype, p < 0.001). A positive trend toward an association between these genotypes and response to therapy was also observed.
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Zhou Q, Henoumont C, Vander Elst L, Laurent S, Muller RN. Fluorometry, a fast screening technique for non-covalent binding of contrast agents to human serum albumin? CONTRAST MEDIA & MOLECULAR IMAGING 2013; 8:361-5. [DOI: 10.1002/cmmi.1531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 12/09/2012] [Accepted: 01/04/2013] [Indexed: 11/09/2022]
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Schleich N, Sibret P, Danhier P, Ucakar B, Laurent S, Muller R, Jérôme C, Gallez B, Préat V, Danhier F. Dual anticancer drug/superparamagnetic iron oxide-loaded PLGA-based nanoparticles for cancer therapy and magnetic resonance imaging. Int J Pharm 2013; 447:94-101. [DOI: 10.1016/j.ijpharm.2013.02.042] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 02/15/2013] [Accepted: 02/18/2013] [Indexed: 01/17/2023]
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Vo-Duc P, Vignon V, Bozec E, Khettab H, Hanon O, Hallab M, Boutouyrie P, Laurent S. P6.22 A NOVEL DEVICE FOR MEASURING ARTERIAL STIFFNESS USING THE FINGER-TOE PULSE WAVE VELOCITY: VALIDATION STUDY OF THE POPMÈTRE®. Artery Res 2013. [DOI: 10.1016/j.artres.2013.10.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Laurent S, Ng EP, Thirifays C, Lakiss L, Goupil GM, Mintova S, Burtea C, Oveisi E, Hébert C, de Vries M, Motazacker MM, Rezaee F, Mahmoudi M. Corona protein composition and cytotoxicity evaluation of ultra-small zeolites synthesized from template free precursor suspensions. Toxicol Res (Camb) 2013. [DOI: 10.1039/c3tx50023c] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Tosello F, Bensalah M, Ketthab H, Kachenoura N, Boutouyrie P, Laurent S, Mousseaux E. P5.07 DIFFERENT EFFECTS OF AGEING AND BP ON SEVERAL AORTIC AND CAROTID SEGMENTS. Artery Res 2013. [DOI: 10.1016/j.artres.2013.10.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Mahmoudi M, Shokrgozar MA, Bonakdar S, Moghadam MK, Laurent S. Interaction of bare and gold-coated superparamagnetic iron oxide nanoparticles with fetal bovine serum. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/bf03246549] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Strassheim S, Stik G, Rasschaert D, Laurent S. mdv1-miR-M7-5p, located in the newly identified first intron of the latency-associated transcript of Marek’s disease virus, targets the immediate-early genes ICP4 and ICP27. J Gen Virol 2012; 93:1731-1742. [DOI: 10.1099/vir.0.043109-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
Marek’s disease virus serotype 1 (MDV-1) is an oncogenic alphaherpesvirus causing fatal T-cell lymphoma in chickens. MDV latency is characterized by the production of latency-associated transcripts (LATs), a family of non-protein-coding spliced RNAs. A cluster of four microRNAs (cluster mdv1-miR-M8-M10) was identified, but not formally mapped, at the predicted LAT 5′ end. We established a LAT cDNA library from latently MDV-infected cell line MSB-1. We identified 22 highly variable LATs, which were due to the extensive alternative splicing of a total of 14 introns. RACE PCR confirmed the predicted 3′ end and allowed identification of the 5′ end, 400 nt upstream of the previously predicted LAT end. The LATs share their transcription start site with the microRNA-expressing transcript described previously, localizing the microRNAs to the first LAT intron and identifying the LATs as the primary transcripts of the microRNAs. We identified MDV immediate-early (IE) genes ICP4 and ICP27 as putative targets of mdv1-miR-M7-5p, the third microRNA of the cluster mdv1-miR-M8-M10. Endogenously expressed mdv1-miR-M7-5p in MSB-1 cells reduced luciferase activity significantly when microRNA-responsive elements from ICP4 or ICP27 were cloned in the 3′ UTR of the firefly luciferase gene. ICP27 protein levels were decreased by 70 % when the mdv1-miR-M7-5p precursor was co-expressed with an ICP27 expression plasmid. Additionally, we showed a negative correlation between the decreased expression of mdv1-miR-M7-5p and an increase in ICP27 expression during virus reactivation. Our results suggest that, by targeting two IE genes, MDV microRNAs produced from LAT transcripts may contribute to establish and/or maintain latency.
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Daniel-Lamazière JM, Lacolley P, Bézie Y, Challande P, Laurent S. Interactions cellule/matrice et propriétés élastiques des gros troncs artériels. Med Sci (Paris) 2012. [DOI: 10.4267/10608/464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Laurent S, Girerd X, Benetos A, Daniel-Lamazière JM, Lacolley P. Physiopathologie du remodelage artériel dans l'hypertension artérielle. Med Sci (Paris) 2012. [DOI: 10.4267/10608/465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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De Bruyne S, Van Damme N, Smeets P, Ferdinande L, Ceelen W, Mertens J, Van de Wiele C, Troisi R, Libbrecht L, Laurent S, Geboes K, Peeters M. Value of DCE-MRI and FDG-PET/CT in the prediction of response to preoperative chemotherapy with bevacizumab for colorectal liver metastases. Br J Cancer 2012; 106:1926-33. [PMID: 22596235 PMCID: PMC3388560 DOI: 10.1038/bjc.2012.184] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background: The purpose of this study was to assess the role of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and 18F-fluorodeoxyglucose positron emission tomography computed tomography (FDG-PET/CT) for evaluation of response to chemotherapy and bevacizumab and for prediction of progression-free survival (PFS) in patients with metastatic colorectal cancer (mCRC) with potentially resectable liver lesions. Methods: A total of 19 mCRC patients were treated with FOLFOX/FOLFIRI and bevacizumab followed by surgery. Dynamic contrast-enhanced magnetic resonance imaging and FDG-PET/CT were performed before treatment and after cycle 5. PET results were quantified by calculating maximum standardised uptake value (SUVmax) whereas area under the enhancement curve (AUC), initial AUC (iAUC) and the endothelial transfer constant (Ktrans) were used to quantify DCE-MRI. Pathological analysis of the resection specimen was performed, including measurement of microvessel density (MVD) and proliferation index. Results: Both AUC and iAUC were significantly decreased following bevacizumab therapy (median change of 22% (P=0.002) and 40% (P=0.001) for AUC and iAUC, respectively). Progression-free survival benefit was shown for patients with >40% reduction in Ktrans (P=0.019). In the group of radiological responders, the median baseline SUVmax was 3.77 (IQR: 2.88–5.60) compared with 7.20 (IQR: 4.67–8.73) in nonresponders (P=0.021). A higher follow-up SUVmax was correlated with worse PFS (P=0.012). Median MVD was 10.9. Progression-free survival was significantly shorter in patients with an MVD greater than 10, compared with patients with lower MVD (10 months compared with 16 months, P=0.016). Conclusion: High relative decrease in Ktrans, low follow-up SUVmax and low MVD are favourable prognostic factors for mCRC patients treated with bevacizumab before surgery.
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Radermacher KA, Magat J, Bouzin C, Laurent S, Dresselaers T, Himmelreich U, Boutry S, Mahieu I, Vander Elst L, Feron O, Muller RN, Jordan BF, Gallez B. Multimodal assessment of early tumor response to chemotherapy: comparison between diffusion-weighted MRI, 1H-MR spectroscopy of choline and USPIO particles targeted at cell death. NMR IN BIOMEDICINE 2012; 25:514-522. [PMID: 21874657 DOI: 10.1002/nbm.1765] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 05/20/2011] [Accepted: 05/20/2011] [Indexed: 05/31/2023]
Abstract
The aim of this study was to determine the value of different magnetic resonance (MR) protocols to assess early tumor response to chemotherapy. We used a murine tumor model (TLT) presenting different degrees of response to three different cytotoxic agents. As shown in survival curves, cyclophosphamide (CP) was the most efficient drug followed by 5-fluorouracil (5-FU), whereas the etoposide treatment had little impact on TLT tumors. Three different MR protocols were used at 9.4 Tesla 24 h post-treatment: diffusion-weighted (DW)-MRI, choline measurement by (1) H MRS, and contrast-enhanced MRI using ultrasmall iron oxide nanoparticles (USPIO) targeted at phosphatidylserine. Accumulation of contrast agent in apoptotic tumors was monitored by T(2) -weighted images and quantified by EPR spectroscopy. Necrosis and apoptosis were assessed by histology. Large variations were observed in the measurement of choline peak areas and could not be directly correlated to tumor response. Although the targeted USPIO particles were able to significantly differentiate between the efficiency of each cytotoxic agent and best correlated with survival endpoint, they present the main disadvantage of non-specific tumor accumulation, which could be problematic when transferring the method to the clinic. DW-MRI presents a better compromise by combining longitudinal studies with a high dynamic range; however, DW-MRI was unable to show any significant effect for 5-FU. This study illustrates the need for multimodal imaging in assessing tumor response to treatment to compensate for individual limitations.
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