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Lambert B, de Landsheere L, Noé GK, Devassy R, Ferreira H, Dubuisson J, Deprest J, Botchorishvili R. Practice of laparoscopic prolapse surgery in Europe - ESGE Survey. Facts Views Vis Obgyn 2023; 15:269-276. [PMID: 37742204 PMCID: PMC10643013 DOI: 10.52054/fvvo.15.3.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023] Open
Abstract
Sacrocolpopexy is considered as the "gold standard" for management of women with apical prolapse. Numerous technical variants are being practiced. The first aim of this survey was to determine the habits of practice of laparoscopic sacrocolpopexy (LSCP) in Europe. The second aim was to determine whether surgeons who perform laparoscopic pelvic organ prolapse (POP) repair are familiar with the practice of alternative techniques and with mesh-less laparoscopic treatment of prolapse. The questionnaire was designed by the Urogynaecology Special Interest Group of the European Society for Gynaecological Endoscopy (ESGE). All ESGE-members were invited by email to respond to this survey consisting of 54 questions divided in different categories. Following review of ESGE member's responses, we have highlighted the great heterogeneity concerning the practice of LSCP and important variability in performance of concomitant surgeries. Alternative techniques are rarely used in practice. Furthermore, the lack of standardisation of the many surgical steps of a laparoscopic sacrocolpopexy is mainly due to the lack of evidence. There is a need for training and teaching in both standard and newer innovative techniques as well as the reporting of medium and long-term outcomes of both standard laparoscopic sacrocolpopexy and any of its alternatives.
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van de Kuit A, Krishnan RJ, Mallee WH, Goedhart LM, Lambert B, Doornberg JN, Vervest TMJS, Martin J. Surgical site infection after wound closure with staples versus sutures in elective knee and hip arthroplasty: a systematic review and meta-analysis. Arthroplasty 2022; 4:12. [PMID: 35241172 PMCID: PMC8896293 DOI: 10.1186/s42836-021-00110-7] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 12/23/2021] [Indexed: 11/10/2022] Open
Abstract
Purpose This systematic review and meta-analysis aimed to study surgical site infection of wound closure using staples versus sutures in elective knee and hip arthroplasties. Methods A systematic literature review was performed to search for randomized controlled trials that compared surgical site infection after wound closure using staples versus sutures in elective knee and hip arthroplasties. The primary outcome was surgical site infection. The risk of bias was assessed with the Cochrane risk of bias assessment tool. The relative risk and 95% confidence interval with a random-effects model were assessed. Results Eight studies were included in this study, including 2 studies with a low risk of bias, 4 studies having ‘some concerns’, and 2 studies with high risk of bias. Significant difference was not found in the risk of SSI for patients with staples (n = 557) versus sutures (n = 573) (RR: 1.70, 95% CI: 0.94–3.08, I2 = 16%). The results were similar after excluding the studies with a high risk of bias (RR: 1.67, 95% CI: 0.91–3.07, I2 = 32%). Analysis of studies with low risk of bias revealed a significantly higher risk of surgical site infection in patients with staples (n = 331) compared to sutures (n = 331) (RR: 2.56, 95% CI: 1.20–5.44, I2 = 0%). There was no difference between continuous and interrupted sutures (P > 0.05). In hip arthroplasty, stapling carried a significantly higher risk of surgical site infection than suturing (RR: 2.51, 95% CI: 1.15–5.50, I2 = 0%), but there was no significant difference in knee arthroplasty (RR: 0.87, 95% CI: 0.33–2.25, I2 = 22%; P > 0.05). Conclusions Stapling might carry a higher risk of surgical site infection than suturing in elective knee and hip arthroplasties, especially in hip arthroplasty. Supplementary Information The online version contains supplementary material available at 10.1186/s42836-021-00110-7.
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Affiliation(s)
- A van de Kuit
- University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - R J Krishnan
- Department of Anesthesia & Perioperative Medicine and Department of Epidemiology & Biostatistics, MEDICI Centre, University of Western Ontario, London, Canada
| | - W H Mallee
- Department of Orthopaedics, Joint Research, Onze Lieve Vrouwe Gasthuis, Amsterdam, the Netherlands
| | - L M Goedhart
- Department of Orthopaedics, University Medical Center Groningen, Postbus 30.001, 9700 RB, Groningen, The Netherlands
| | - B Lambert
- Department of Orthopaedics, University Medical Center Groningen, Postbus 30.001, 9700 RB, Groningen, The Netherlands
| | - J N Doornberg
- Department of Orthopaedics, University Medical Center Groningen, Postbus 30.001, 9700 RB, Groningen, The Netherlands.
| | - T M J S Vervest
- Department of Orthopaedics, Tergooi Hospital, Hilversum, The Netherlands
| | - J Martin
- Department of Anesthesia & Perioperative Medicine and Department of Epidemiology & Biostatistics, MEDICI Centre, University of Western Ontario, London, Canada
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Gohel D, Lambert B, Law D, Waites J, Henderson D, Stewart T. Characteristics of Indigenous and Non-Indigenous Australians Requiring Urgent Percutaneous Coronary Intervention at a Regional Hospital. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.472] [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: 10/16/2022]
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Schoeler NE, Orford M, Vivekananda U, Simpson Z, Van de Bor B, Smith H, Balestrini S, Rutherford T, Brennan E, McKenna J, Lambert B, Barker T, Jackson R, Williams RSB, Sisodiya SM, Eaton S, Heales SJR, Cross JH, Walker MC. K.Vita: a feasibility study of a blend of medium chain triglycerides to manage drug-resistant epilepsy. Brain Commun 2021; 3:fcab160. [PMID: 34729477 PMCID: PMC8557697 DOI: 10.1093/braincomms/fcab160] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 03/03/2021] [Revised: 05/18/2021] [Accepted: 05/25/2021] [Indexed: 11/14/2022] Open
Abstract
This prospective open-label feasibility study aimed to evaluate acceptability, tolerability and compliance with dietary intervention with K.Vita, a medical food containing a unique ratio of decanoic acid to octanoic acid, in individuals with drug-resistant epilepsy. Adults and children aged 3-18 years with drug-resistant epilepsy took K.Vita daily whilst limiting high-refined sugar food and beverages. K.Vita was introduced incrementally with the aim of achieving ≤35% energy requirements for children or 240 ml for adults. Primary outcome measures were assessed by study completion, participant diary, acceptability questionnaire and K.Vita intake. Reduction in seizures or paroxysmal events was a secondary outcome. 23/35 (66%) children and 18/26 (69%) adults completed the study; completion rates were higher when K.Vita was introduced more gradually. Gastrointestinal disturbances were the primary reason for discontinuation, but symptoms were similar to those reported from ketogenic diets and incidence decreased over time. At least three-quarters of participants/caregivers reported favourably on sensory attributes of K.Vita, such as taste, texture and appearance, and ease of use. Adults achieved a median intake of 240 ml K.Vita, and children 120 ml (19% daily energy). Three children and one adult had ß-hydroxybutyrate >1 mmol/l. There was 50% (95% CI 39-61%) reduction in mean frequency of seizures/events. Reduction in seizures or paroxysmal events correlated significantly with blood concentrations of medium chain fatty acids (C10 and C8) but not ß-hydroxybutyrate. K.Vita was well accepted and tolerated. Side effects were mild and resolved with dietetic support. Individuals who completed the study complied with K.Vita and additional dietary modifications. Dietary intervention had a beneficial effect on frequency of seizures or paroxysmal events, despite absent or very low levels of ketosis. We suggest that K.Vita may be valuable to those with drug-resistant epilepsy, particularly those who cannot tolerate or do not have access to ketogenic diets, and may allow for more liberal dietary intake compared to ketogenic diets, with mechanisms of action perhaps unrelated to ketosis. Further studies of effectiveness of K.Vita are warranted.
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Affiliation(s)
- Natasha E Schoeler
- UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital for Children, London, UK
| | - Michael Orford
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Umesh Vivekananda
- National Hospital for Neurology and Neurosurgery, London, UK.,UCL Queen Square Institute of Neurology, London, UK
| | - Zoe Simpson
- Great Ormond Street Hospital for Children, London, UK
| | | | - Hannah Smith
- Great Ormond Street Hospital for Children, London, UK
| | - Simona Balestrini
- UCL Queen Square Institute of Neurology, London, UK.,Chalfont Centre for Epilepsy, Chalfont-St-Peter, UK
| | | | | | | | | | - Tom Barker
- Vitaflo (International) Ltd, Liverpool, UK
| | | | - Robin S B Williams
- Department of Biological Sciences, Royal Holloway University of London, Surrey, UK
| | - Sanjay M Sisodiya
- UCL Queen Square Institute of Neurology, London, UK.,Chalfont Centre for Epilepsy, Chalfont-St-Peter, UK
| | - Simon Eaton
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Simon J R Heales
- UCL Great Ormond Street Institute of Child Health, London, UK.,Great Ormond Street Hospital for Children, London, UK.,National Hospital for Neurology and Neurosurgery, London, UK.,UCL Queen Square Institute of Neurology, London, UK
| | - J Helen Cross
- UCL Great Ormond Street Institute of Child Health, London, UK
| | - Matthew C Walker
- National Hospital for Neurology and Neurosurgery, London, UK.,UCL Queen Square Institute of Neurology, London, UK
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Lambert B, Lightfoot K, Meskell R, Whiteley VJ, Martin-McGill KJ, Schoeler NE. Keto-on-the-Clock: A Survey of Dietetic Care Contact Time Taken to Provide Ketogenic Diets for Drug-Resistant Epilepsy in the UK. Nutrients 2021; 13:nu13082484. [PMID: 34444643 PMCID: PMC8400576 DOI: 10.3390/nu13082484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 11/16/2022] Open
Abstract
Medical ketogenic diets (KDs) are effective yet resource-intensive treatment options for drug-resistant epilepsy (DRE). We investigated dietetic care contact time, as no recent data exist. An online survey was circulated to ketogenic dietitians in the UK and Ireland. Data were collected considering feeding route, KD variant and type of ketogenic enteral feed (KEF), and the estimated number of hours spent on patient-related activities during the patient journey. Fifteen dietitians representing nine KD centres responded. Of 335 patients, 267 (80%) were 18 years old or under. Dietitians spent a median of 162 h (IQR 54) of care contact time per patient of which a median of 48% (IQR 6) was direct contact. Most time was required for the classical KD taken orally (median 193 h; IQR 213) as a combined tube and oral intake (median 211 h; IQR 172) or a blended food KEF (median 189 h; IQR 148). Care contact time per month was higher for all KDs during the three-month initial trial compared to the two-year follow-up stage. Patients and caregivers with characteristics such as learning or language difficulties were identified as taking longer. Twelve out of fifteen (80%) respondents managed patients following the KD for more than two years, requiring an estimated median contact care time of 2 h (IQR 2) per patient per month. Ten out of fifteen (67%) reported insufficient official hours for dietetic activities. Our small survey gives insight into estimated dietetic care contact time, with potential application for KD provision and service delivery
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Affiliation(s)
- Bridget Lambert
- Vitaflo (International) Ltd., 182 Sefton Street, Liverpool L3 4BQ, UK;
| | - Kathryn Lightfoot
- Leeds Children’s Hospital, 2nd Floor, 2 Park Lane, Leeds LS3 1ES, UK; (K.L.); (R.M.)
| | - Rachel Meskell
- Leeds Children’s Hospital, 2nd Floor, 2 Park Lane, Leeds LS3 1ES, UK; (K.L.); (R.M.)
| | - Victoria J. Whiteley
- Royal Manchester Children’s Hospital, Oxford Road, Manchester M13 9WL, UK;
- School of Health and Society, University of Salford, 43 The Crescent, Manchester M5 4WT, UK
| | - Kirsty J. Martin-McGill
- Department of Clinical Sciences and Nutrition, University of Chester, Parkgate Road, Chester CH1 4BJ, UK;
| | - Natasha E. Schoeler
- UCL Great Ormond Street Institute of Child Health, 30 Guildford Street, London WC1N 1EH, UK
- Correspondence: ; Tel.: +44-(0)-20-7242-9789
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Lester G, Eather S, Law D, Kelly M, Henderson D, Stewart T, Waites J, Lambert B. Clinical Factors Associated With Failed Thrombolysis in ST-Segment Myocardial Infarction (STEMI) in a Regional Setting. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.268] [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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Lester G, Eather S, Laws D, Dowling L, Kelly M, Lambert B. Safety of Same-Day Discharge of Outpatients Undergoing Percutaneous Coronary Intervention (PCI) in a Regional Setting: A Retrospective Cohort Analysis. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.328] [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: 11/24/2022]
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Dhondt E, Hermie L, Verhelst X, Lambert B, Defreyne L. 4:21 PM Abstract No. 307 Transarterial radioembolization versus drug-eluting beads chemoembolization for treatment of inoperable early and intermediate hepatocellular carcinoma: interim results of the randomized controlled TRACE trial. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Aizpurua J, Stewart B, McArthur S, Lambert B, Cross J, Catterson V. Improved power transformer condition monitoring under uncertainty through soft computing and probabilistic health index. Appl Soft Comput 2019. [DOI: 10.1016/j.asoc.2019.105530] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Martin-McGill KJ, Lambert B, Whiteley VJ, Wood S, Neal EG, Simpson ZR, Schoeler NE. Understanding the core principles of a 'modified ketogenic diet': a UK and Ireland perspective. J Hum Nutr Diet 2019; 32:385-390. [PMID: 30859652 DOI: 10.1111/jhn.12637] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/27/2022]
Abstract
BACKGROUND Many centres across the UK and Ireland anecdotally report using a 'modified ketogenic diet' (MKD) as a treatment for refractory epilepsy. Although a MKD is within the spectrum of ketogenic diets (KDs), there is little literature reporting upon its definition, use or clinical effectiveness. We aimed to understand the core principles of MKD practice and to assess whether and how the MKD differs from other KD protocols. METHODS An online survey, designed by a consensus group of ketogenic dietitians, was circulated to 39 KD centres across the UK and Ireland. It consisted of 35 questions regarding dietetic practice when providing MKD. RESULTS Eighteen centres completed the questionnaire: 13 paediatric, three adult and two combined centres. All dietitians based MKD 'prescriptions' on estimated total energy requirements. The average macronutrient profile was 75% fat and 5% carbohydrate, with protein ad libitum. Carbohydrate and fat targets were implemented via weighed portions (carbohydrate lists n = 18; fat lists n = 13) and 'household measures' (carbohydrate lists n = 2; fat lists n = 3). Of the centres, 94% (n = 17) adjusted macronutrients over time; these decisions were based on ketone levels and seizures in most cases (83%; n = 14). Ketogenic nutritional products available on prescription were used by 10 centres (56%) when initiating and by all centres when 'fine-tuning' the MKD. CONCLUSIONS A modified ketogenic diet in the UK and Ireland is a hybrid KD, adopting principles from other established KD protocols and defining new elements unique to the MKD. Further research into the clinical and cost-effectiveness of MKD would be of benefit.
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Affiliation(s)
- K J Martin-McGill
- University of Liverpool, Liverpool, UK.,The Walton Centre NHS Foundation Trust, Liverpool, UK
| | - B Lambert
- Vitaflo (International) Ltd, Liverpool, UK
| | - V J Whiteley
- Royal Manchester Children's Hospital, Manchester, UK
| | - S Wood
- Matthew's Friends Clinics, Lingfield, UK
| | - E G Neal
- Matthew's Friends Clinics, Lingfield, UK
| | - Z R Simpson
- Great Ormond Street Children's Hospital, London, UK
| | - N E Schoeler
- Clinical Neurosciences, UCL Great Ormond Street Institute of Child Health, London, UK
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Brault N, Qassemyar Q, Bouthors C, Lambert B, Atlan M, Missenard G. [A giant sacral chordoma resection and reconstruction with a gluteal perforator flap, a case report and literature review]. ANN CHIR PLAST ESTH 2018; 64:271-277. [PMID: 30509683 DOI: 10.1016/j.anplas.2018.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/15/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Sacral chordomas are rare primary bone tumors and represent more than half of all primary malignant sacral tumors. Surgical resection is the only treatment with close to 50% of remission at 10 years, with or without radiotherapy. This tissue removal can be very extensive and morbid, particularly for evolved tumors. The reconstruction mostly uses myocutaneous flaps, notably the gluteus maximus flap and the latissimus dorsi flap, increasing morbidity of the surgical procedure. To avoid a muscular sacrifice and reduce the post-surgical morbidity, we describe the case of a patient who underwent a giant sacral chordoma resection and a reconstruction with a superior gluteal artery perforator flap. CASE REPORT A 57-y.o. patient with a voluminous sacral chordoma had undergone a partial sacrectomy and abdomino-perineal resection. Firstly, a laparoscopy was realized to create a colostomy, to dissect an omental flap and to prepare the monobloc resection. In a prone position, the resection of the tumor was achieved and a de-epithelialized superior gluteal artery perforator flap was performed to fill the space and to support pelvic organs. CONCLUSION For resections of sacral chordomas, coelioscopy has considerably reduced the surgical morbidity. However, the majority of reconstructions use myocutaneous flaps, specifically gluteus maximus and latissimus dorsi, which their postural function is considerable. Muscular sacrifice can lead to functional impotence with difficulty walking and standing up and run contrary to the diminution morbidity initiated by oncologic surgeons.
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Affiliation(s)
- N Brault
- Service de chirurgie plastique, reconstructive, esthétique, microchirurgie et régénération tissulaire, faculté de médecine, Sorbonne université, hôpital Tenon, 4, rue de la Chine, 75020 Paris, France
| | - Q Qassemyar
- Service de chirurgie plastique, reconstructive, esthétique, microchirurgie et régénération tissulaire, faculté de médecine, Sorbonne université, hôpital Tenon, 4, rue de la Chine, 75020 Paris, France.
| | - C Bouthors
- Service de chirurgie orthopédique et traumatologie, chirurgie du rachis, hôpital Bicêtre, 78, rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France
| | - B Lambert
- Service de chirurgie digestive et oncologique, université Paris-Sud, hôpital Bicêtre, Assistance publique-Hôpitaux de Paris, 78, rue du Général-Leclerc, 94275 Le Kremlin-Bicêtre, France
| | - M Atlan
- Service de chirurgie plastique, reconstructive, esthétique, microchirurgie et régénération tissulaire, faculté de médecine, Sorbonne université, hôpital Tenon, 4, rue de la Chine, 75020 Paris, France
| | - G Missenard
- Service de chirurgie orthopédique et traumatologie, chirurgie du rachis, hôpital Bicêtre, 78, rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France
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Lambert B, Weynans L, Bergmann M. Local lubrication model for spherical particles within incompressible Navier-Stokes flows. Phys Rev E 2018; 97:033313. [PMID: 29776061 DOI: 10.1103/physreve.97.033313] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 11/07/2022]
Abstract
The lubrication forces are short-range hydrodynamic interactions essential to describe suspension of the particles. Usually, they are underestimated in direct numerical simulations of particle-laden flows. In this paper, we propose a lubrication model for a coupled volume penalization method and discrete element method solver that estimates the unresolved hydrodynamic forces and torques in an incompressible Navier-Stokes flow. Corrections are made locally on the surface of the interacting particles without any assumption on the global particle shape. The numerical model has been validated against experimental data and performs as well as existing numerical models that are limited to spherical particles.
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Affiliation(s)
- B Lambert
- Memphis Team, INRIA, F-33400 Talence, France
| | - L Weynans
- Memphis Team, INRIA, F-33400 Talence, France
| | - M Bergmann
- Memphis Team, INRIA, F-33400 Talence, France
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Williams S, Jones T, Lambert B, Harp R. Effects of Tasco supplementation on stallion semen characteristics: A pilot study. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2017.03.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lewington V, Lambert B, Poetschger U, Sever ZB, Giammarile F, McEwan AJB, Castellani R, Lynch T, Shulkin B, Drobics M, Staudenherz A, Ladenstein R. 123I-mIBG scintigraphy in neuroblastoma: development of a SIOPEN semi-quantitative reporting ,method by an international panel. Eur J Nucl Med Mol Imaging 2016; 44:234-241. [PMID: 27663238 PMCID: PMC5214990 DOI: 10.1007/s00259-016-3516-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [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: 05/26/2016] [Accepted: 09/05/2016] [Indexed: 12/04/2022]
Abstract
Purpose A robust method is required to standardise objective reporting of diagnostic 123I-mIBG images in neuroblastoma. Prerequisites for an appropriate system are low inter- and intra-observer error and reproducibility across a broad disease spectrum. We present a new reporting method, developed and tested for SIOPEN by an international expert panel. Method Patterns of abnormal skeletal 123I-mIBG uptake were defined and assigned numerical scores [0–6] based on disease extent within 12 body segments. Uptake intensity was excluded from the analysis. Data sets from 82 patients were scored independently by six experienced specialists as unblinded pairs (pre- and post-induction chemotherapy) and in random order as a blinded study. Response was defined as ≥50 % reduction in post induction score compared with baseline. Results In total, 1968 image sets were reviewed individually. Response rates of 88 % and 82 % were recorded for patients with baseline skeletal scores ≤23 and 24-48 respectively, compared with 44 % response in patients with skeletal scores >48 (p = 0.02). Reducing the number of segments or extension scale had a small but statistically negative impact upon the number of responses detected. Intraclass correlation coefficients [ICCs] calculated for the unblinded and blinded study were 0.95 at diagnosis and 0.98 and 0.99 post-induction chemotherapy, respectively. Conclusions The SIOPEN mIBG score method is reproducible across the full spectrum of disease in high risk neuroblastoma. Numerical assessment of skeletal disease extent avoids subjective evaluation of uptake intensity. This robust approach provides a reliable means with which to examine the role of 123I mIBG scintigraphy as a prognostic indicator in neuroblastoma.
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Affiliation(s)
| | - B Lambert
- Radiology and Nuclear Medicine, Ghent University, Ghent, Belgium
| | - U Poetschger
- Department for Studies and Statistics on Integrated Research and Projects (S2IRP), Children's Cancer Research Institute, Vienna, Austria
| | - Z Bar Sever
- Schneider Children's Medical Centre of Israel, Petach-Tikva, Israel
| | | | | | - Rita Castellani
- Nuclear Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - T Lynch
- Northern Ireland Cancer Centre, Belfast, UK
| | - B Shulkin
- St Jude's Children's Research Hospital, Memphis, USA
| | - M Drobics
- AIT Austrian Institute of Technology GmbH Safety & Security Department, Information Management & eHealth, Vienna, Austria
| | | | - R Ladenstein
- Department for Studies and Statistics on Integrated Research and Projects (S2IRP), Children's Cancer Research Institute, Vienna, Austria.,St. Anna Children's Hospital and Medical University, Vienna, Austria
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Lambert B, Weaver J, Sader M. Radial Arterial Access Reduces Access Site Complications and Unplanned Admissions in Outpatient Angiography and Percutaneous Intervention. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.447] [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: 10/21/2022]
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Lambert B, Weaver J, Sader M. A Retrospective Cohort Study to Characterise Patients Likely to Crossover From Radial to Femoral Arterial Access. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.386] [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: 11/29/2022]
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Wittoek R, Carron P, Lambert B, Meersseman P, Verbruggen A, Van den Bosch F, Elewaut D. OP0097 Immunoscintigraphic Detection of TNF by Radiolabeled Certolizumab Pegol in Patients with Erosive Hand Osteoarthritis in Relation To Disease Activity and Structural Progression: A Proof of Concept Study. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3407] [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: 11/04/2022]
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18
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Ball J, Sawyer J, Lambert B, Ramirez H, Adcock L, Costilla J, Mora GarcÍa M. Assessment of vegetable based fibers in ground beef intended for international meat formulations. Meat Sci 2016. [DOI: 10.1016/j.meatsci.2015.08.050] [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: 11/24/2022]
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Vandecasteele K, Tummers P, Naessens P, Makar A, Denys H, Delrue L, Van den Broecke R, Devisschere P, Lambert B, Lambein K, De Meerleer G. PO-0757: Neo-adjuvant chemoradiation for locally advanced cervical cancer: a promising report on outcome. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40749-2] [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: 10/23/2022]
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Vidali S, Aminzadeh S, Lambert B, Rutherford T, Sperl W, Kofler B, Feichtinger RG. Mitochondria: The ketogenic diet--A metabolism-based therapy. Int J Biochem Cell Biol 2015; 63:55-9. [PMID: 25666556 DOI: 10.1016/j.biocel.2015.01.022] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/15/2015] [Accepted: 01/29/2015] [Indexed: 12/13/2022]
Abstract
Mitochondria are the energy-producing organelles of the cell, generating ATP via oxidative phosphorylation mainly by using pyruvate derived from glycolytic processing of glucose. Ketone bodies generated by fatty acid oxidation can serve as alternative metabolites for aerobic energy production. The ketogenic diet, which is high in fat and low in carbohydrates, mimics the metabolic state of starvation, forcing the body to utilize fat as its primary source of energy. The ketogenic diet is used therapeutically for pharmacoresistant epilepsy and for "rare diseases" of glucose metabolism (glucose transporter type 1 and pyruvate dehydrogenase deficiency). As metabolic reprogramming from oxidative phosphorylation toward increased glycolysis is a hallmark of cancer cells; there is increasing evidence that the ketogenic diet may also be beneficial as an adjuvant cancer therapy by potentiating the antitumor effect of chemotherapy and radiation treatment. This article is part of a Directed Issue entitled: Energy Metabolism Disorders and Therapies.
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Affiliation(s)
- Silvia Vidali
- Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | - Sepideh Aminzadeh
- Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | | | | | - Wolfgang Sperl
- Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
| | - Barbara Kofler
- Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria.
| | - René G Feichtinger
- Laura Bassi Centre of Expertise-THERAPEP, Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, Paracelsus Medical University, Salzburg, Austria
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Geffrier F, Turbelin T, Mosnier A, Laouénan C, Lambert B, Leport C, Blanchon T. I-03: Facteurs associés à la prescription et délivrance des antiviraux en médecine de ville dans le traitement de la grippe pandémique et saisonnière. Med Mal Infect 2014. [DOI: 10.1016/s0399-077x(14)70192-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Carron P, Lambert B, De Vos F, Van Praet L, Verbruggen G, Elewaut D, Van den Bosch F. FRI0248 Prediction of Therapy Response by Baseline Scintigraphic Detection of Tnfα with A Radiolabeled Anti-TNF-α in Patients with Active Peripheral Spondyloarthritis and Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2367] [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: 11/03/2022]
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Declerck CH, Lambert B, Boone C. Sexual dimorphism in oxytocin responses to health perception and disgust, with implications for theories on pathogen detection. Horm Behav 2014; 65:521-6. [PMID: 24780143 DOI: 10.1016/j.yhbeh.2014.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 12/07/2013] [Revised: 04/03/2014] [Accepted: 04/20/2014] [Indexed: 12/24/2022]
Abstract
In response to a recent hypothesis that the neuropeptide oxytocin might be involved in human pathogen avoidance mechanisms, we report the results of a study in which we investigate the effect of intranasal oxytocin on two behaviors serving as proxies for pathogen detection. Participants received either oxytocin or a placebo and were asked to evaluate (1) the health of Caucasian male computer-generated pictures that varied in facial redness (an indicator of hemoglobin perfusion) and (2) a series of pictures depicting disgusting scenarios. Men, but not women, evaluated all faces, regardless of color, as less healthy when given oxytocin compared to a placebo. Women, on the other hand, expressed decreased disgust when given oxytocin compared to a placebo. These results suggest that intranasal oxytocin administration does not facilitate pathogen detection based on visual cues, but instead reveal clear sex differences in the perception of health and sickness cues.
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Affiliation(s)
| | - B Lambert
- University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium.
| | - C Boone
- University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium.
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Stone W, Ibanez L, Newschaffer C, Rohloff E, Abdullah M, Burkom D, Clarke N, Durkin M, Golden A, Kuo A, Lakes K, Lambert B, Landa R, Messinger D, Paterson S, Warren Z, Burbacher T, Faustman E. Streamlining the diagnosis of autism spectrum disorder for the National Children's Study. Neurotoxicol Teratol 2014. [DOI: 10.1016/j.ntt.2014.04.010] [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: 11/15/2022]
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De Meerleer G, Claeys T, Delrue L, Lambert B, Lumen N, Fonteyne V, Decaestecker K, Ost P. SP-0021: Should oligometastatic disease in prostate cancer be treated systemically?: the radiation oncologist point of view. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30126-2] [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: 11/25/2022]
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Riley M, Lambert B, Qi XL, Constantinidis C. Neural Correlates of Visual Working Memory Capacity in the Posterior Parietal Cortex. J Vis 2013. [DOI: 10.1167/13.9.8] [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: 11/24/2022] Open
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De Meerleer G, Berkovic P, Delrue L, Lambert B, Lumen N, Fonteyne V, Villeirs G, Ost P. EP-1132 SALVAGE STEREOTACTIC BODY RADIOTHERAPY FOR PATIENTS WITH LIMITED PROSTATE CANCER METASTASES. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71465-2] [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: 10/28/2022]
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Vandecasteele K, Makar A, Van den Broecke R, Delrue L, Denys H, Lambein K, Lambert B, van Eijkeren M, Tummers P, De Meerleer G. Intensity-modulated arc therapy with cisplatin as neo-adjuvant treatment for primary irresectable cervical cancer. Toxicity, tumour response and outcome. Strahlenther Onkol 2012; 188:576-81. [PMID: 22526231 DOI: 10.1007/s00066-012-0097-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 02/21/2012] [Indexed: 01/23/2023]
Abstract
PURPOSE The goal of this work was to evaluate the feasibility and outcome of intensity-modulated arc therapy ± cisplatin (IMAT ± C) followed by hysterectomy for locally advanced cervical cancer. PATIENTS AND METHODS A total of 30 patients were included in the study. The primary tumour and PET-positive lymph node(s) received a simultaneous integrated boost. Four weeks after IMAT ± C treatment, response was evaluated. Resection consisted of hysterectomy with or without lymphadenectomy. Tumour response, acute and late radiation toxicity, postoperative morbidity and outcome were evaluated. RESULTS All hysterectomy specimens were macroscopically tumour-free with negative resection margins; pathological complete response was 40%. In 2 patients, one resected lymph node was positive. There was no excess in postoperative morbidity. Apart from two grade 3 hematologic toxicities, no grade 3 or 4 acute radiation toxicity was observed. No grade 3, 1 grade 4 (4%) intestinal, and 4 grade 3 (14%) urinary late toxicities were observed. The 2-year local and regional control rates were 96% and 100%, respectively. The 2-year distant control rate was 92%. Actuarial 2-year progression free survival rate was 89%. Actuarial 1- and 2-year overall survival rates were 96% and 91%, while 3-year overall survival was 84%. CONCLUSION Surgery after IMAT ± C is feasible with low postoperative morbidity and radiation toxicity. Local, regional, distant control and survival rates are promising.
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Affiliation(s)
- K Vandecasteele
- Department of Radiotherapy, Ghent University Hospital, De Pintelaan 185, 9000, Ghent, Belgium.
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Seinstra B, Defreyne L, Lambert B, Lam M, Verkooijen L, van Erpecum K, van Hoek B, van Erkel A, Coenraad M, Al Younis I, van Vlierberghe H, van den Bosch M. Abstract No. 377: Transarterial RAdioembolization versus ChemoEmbolization for the treatment of HCC: TRACE trial-an international multicenter randomized controlled trial. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.496] [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: 10/28/2022] Open
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Lambert B, Mertens J, Dhondt E, Seinstra B, Smits M, Colle I, van Vlierberghe H, Troisi R, Defreyne L. Abstract No. 199: Hepatocellular carcinoma (HCC) treatment with radiolabelled lipiodol embolization versus ytrrium-90 radioembolization: comparative survival analysis. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.247] [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: 11/24/2022] Open
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Sullivan PB, Alder N, Shrestha B, Turton L, Lambert B. Effectiveness of using a behavioural intervention to improve dietary fibre intakes in children with constipation. J Hum Nutr Diet 2011; 25:33-42. [DOI: 10.1111/j.1365-277x.2011.01179.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lewington V, Poetschger U, Boubaker A, Bar-Sever Z, Drake B, Staudenherz A, Castellani MR, Lambert B, Grange K, Brock P, Garaventa A, Yaniv I, Valteau Couanet D, Castel V, Forjaz De Lacerda A, Malis J, Schroeder H, Luksch R, Beiske K, Ladenstein RL. The prognostic value of semi-quantitative 123I mIBG scintigraphy at diagnosis in high-risk neuroblastoma: Validation of the SIOPEN score method. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.9511] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Holloway CJ, Cochlin LE, Emmanuel Y, Murray A, Codreanu I, Edwards LM, Szmigielski C, Tyler DJ, Knight NS, Saxby BK, Lambert B, Thompson C, Neubauer S, Clarke K. A high-fat diet impairs cardiac high-energy phosphate metabolism and cognitive function in healthy human subjects. Am J Clin Nutr 2011; 93:748-55. [PMID: 21270386 DOI: 10.3945/ajcn.110.002758] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND High-fat, low-carbohydrate diets are widely used for weight reduction, but they may also have detrimental effects via increased circulating free fatty acid concentrations. OBJECTIVE We tested whether raising plasma free fatty acids by using a high-fat, low-carbohydrate diet results in alterations in heart and brain in healthy subjects. DESIGN Men (n = 16) aged 22 ± 1 y (mean ± SE) were randomly assigned to 5 d of a high-fat, low-carbohydrate diet containing 75 ± 1% of calorie intake through fat consumption or to an isocaloric standard diet providing 23 ± 1% of calorie intake as fat. In a crossover design, subjects undertook the alternate diet after a 2-wk washout period, with results compared after the diet periods. Cardiac (31)P magnetic resonance (MR) spectroscopy and MR imaging, echocardiography, and computerized cognitive tests were used to assess cardiac phosphocreatine (PCr)/ATP, cardiac function, and cognitive function, respectively. RESULTS Compared with the standard diet, subjects who consumed the high-fat, low-carbohydrate diet had 44% higher plasma free fatty acids (P < 0.05), 9% lower cardiac PCr/ATP (P < 0.01), and no change in cardiac function. Cognitive tests showed impaired attention (P < 0.01), speed (P < 0.001), and mood (P < 0.01) after the high-fat, low-carbohydrate diet. CONCLUSION Raising plasma free fatty acids decreased myocardial PCr/ATP and reduced cognition, which suggests that a high-fat diet is detrimental to heart and brain in healthy subjects.
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Affiliation(s)
- Cameron J Holloway
- Department of Physiology, Anatomy and Genetics, University of Oxford, United Kingdom.
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Lambert B, Van Vlierberghe H, Troisi R, Defreyne L. Radionuclide therapy for hepatocellular carcinoma. Acta Gastroenterol Belg 2010; 73:484-488. [PMID: 21299159] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM Several techniques for radionuclide therapy of hepatocellular carcinoma (HCC) have been developed. In this overview the available radionuclide treatment modalities for HCC are presented, with an emphasis on Yttrium-90 (90Y) microspheres. METHODS We comment on the commercially available products and describe the practical aspects of these treatment modalities. Medical literature was screened for clinical data on these therapies in patients suffering from HCC. The most relevant studies are summarized, focusing on patient selection, safety and outcome. DISCUSSION Randomized trials are still ongoing or recently initialized. These trials will elucidate the role of 90Y-microspheres in relation to biotherapy and chemoembolization for palliative use in patients not amenable to surgery. CONCLUSION Large retrospective or cohort studies proof the safety of 90Y-microspheres for palliative use in HCC patients suffering Child-Pugh A or B7 cirrhosis. Future research will yield more information on its efficacy when compared to chemoembolization or sorafenib. Several groups have reported on the use of selective internal radiation therapy (SIRT) for downstaging patients to surgical curative treatment.
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Affiliation(s)
- B Lambert
- Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium.
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De Maeseneer DJ, Lambert B, Surmont V, Geboes K, Rottey SWH. 18-Fluorodeoxyglucose positron emission tomography as a tool for response prediction in solid tumours. Acta Clin Belg 2010; 65:291-9. [PMID: 21128554 DOI: 10.1179/acb.2010.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Current response guidelines for the treatment of solid tumours are based on CT criteria. Over the last decades new techniques have emerged to evaluate cancer therapy. FDG-PET scanning is a more functional imaging technique, which can measure differences in metabolic activity. Although it has a low specificity, studies show that it can outperform classical CT scanning criteria. Especially in lung, breast and oesophageal cancer it can predict response earlier in the neo-adjuvant setting. This could reduce the use of ineffective cancer therapies, reducing costs and patient toxicity, and direct patients sooner towards effective therapy. The main problem with FDG-PET remains the difficulty in defining thresholds for response, as there is clearly a lack in large prospective randomized studies validating the use of FDG-PET in response guidelines.We give an overview of data on response prediction in solid tumours by the application of PET.
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Affiliation(s)
- D J De Maeseneer
- Diensten Medische Oncologie, Universitair Ziekenhuis Gent, Gent, Belgium
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Lambert B, Meire P, Joos H, Lens P, Swings J. Fast-growing, aerobic, heterotrophic bacteria from the rhizosphere of young sugar beet plants. Appl Environ Microbiol 2010; 56:3375-81. [PMID: 16348342 PMCID: PMC184956 DOI: 10.1128/aem.56.11.3375-3381.1990] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Fast-growing, aerobic, heterotrophic bacteria from the root surface of young sugar beet plants were inventoried. Isolation of the most abundant bacteria from the root surface of each of 1,100 plants between the second and tenth leaf stage yielded 5,600 isolates. These plants originated from different fields in Belgium and Spain. All isolates were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis of total cellular proteins. Comparison of protein fingerprints allowed us to inventory the bacteria of individual plants of different fields or leaf stages and to analyze the composition and variability of the rhizobacterial population of young sugar beet plants. Each field harbored a specific population of bacteria which showed a highly hierarchic structure. A small number of bacteria occurring frequently at high densities dominated in each field. The major bacteria were identified as Pseudomonas fluorescens, Xanthomonas maltophilia, Pseudomonas paucimobilis, and Phyllobacterium sp. The former three species showed a high genetic variability as they were represented by different protein fingerprint types on the same or different fields or leaf stages. Twinspan analysis and relative abundance plots showed that the structure and composition of the bacterial populations varied strongly over time. Pseudomonads were typically early colonizers which were later replaced by X. maltophilia or Phyllobacterium sp.
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Affiliation(s)
- B Lambert
- Plant Genetic Systems N. V., J. Plateaustraat 22, and Laboratory of Animal Ecology, Zoogeography and Nature Conservation and Laboratory of Microbiology and Microbial Genetics, State University, B-9000 Ghent, Belgium
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Abstract
During the growing season of 1984, the rhizobacteria (including organisms from the rhizosphere soil, the rhizoplane, and internal root zones) of 47 maize plants (two varieties) sampled from different locations in France and at different growth stages were inventoried. Isolates were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis of their total cell proteins and were found to represent 352 different protein electrotypes. Maize seedlings were initially colonized by a small number of different strains. Densities reached up to 10 CFU/g of root. Later in the season, the population density decreased but the heterogeneity of the rhizobacterial populations increased. Fluorescent pseudomonads represented up to 35% of the total rhizobacterial population and comprised 43 different electrotypes. Other bacteria regularly present were Xanthomonas maltophilia, Serratia liquefaciens, Pseudomonas paucimobilis, and Bacillus spp. There was a very low similarity between rhizobacterial populations of plants of the same cultivar (LG5) within one field at different growth stages and also between rhizobacterial populations of the cultivars LG5 and BRIO42 on the same field. Most electrotypes (76%) were found on a single occasion. None of the 352 electrotypes was present on all plants. In the 1985 analysis the rhizobacteria of maize seedlings (one variety) sampled from one field were characterized. They represented 236 different protein electrotypes. Thirty-three isolates showed antifungal activity against major maize pathogens; they comprised four Pseudomonas cepacia strains, producing pyrrolnitrin as well as another unknown antifungal compound.
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Affiliation(s)
- B Lambert
- Plant Genetic Systems, B-9000 Ghent, Belgium, and Biosem, Laboratoire de Biologie Cellulaire et Moléculaire, Groupe Limagrain, Campus Universitaire des Cézeaux, 63710 Aubière, France
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Muthupillai R, Douglas E, Huber S, Lambert B, Pereyra M, Wilson GJ, Flamm SD. Direct comparison of sensitivity encoding (SENSE) accelerated and conventional 3D contrast enhanced magnetic resonance angiography (CE-MRA) of renal arteries: effect of increasing spatial resolution. J Magn Reson Imaging 2010; 31:149-59. [PMID: 20027583 DOI: 10.1002/jmri.22002] [Citation(s) in RCA: 14] [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: 12/29/2022] Open
Abstract
PURPOSE To assess the effect of attaining higher spatial resolution in contrast-enhanced magnetic resonance angiography (MRA) of renal arteries using parallel imaging, sensitivity encoding (SENSE), by comparing the SENSE contrast-enhanced (CE) MRA against a conventional CE-MRA protocol with identical scan times, injection protocol, and other acquisition parameters. MATERIALS AND METHODS Numerical simulations and a direct comparison of SENSE-accelerated versus conventional acquisitions were performed. A total of 41 patients (18 male) were imaged using both protocols for a direct comparison. Both protocols used fluoroscopic triggering, centric encoding, breath-holding, equivalent injection protocol, and lasted approximately 30 seconds. RESULTS Simulated point-spread functions were narrower for the SENSE protocol compared to the conventional protocol. In the patient study, although the SENSE protocol produced images with lower signal-to-noise ratio (SNR), image quality was better for all segments of the renal arteries. In addition, ringing of kidney parenchyma and renal artery blurring were significantly reduced in the SENSE protocol. Finally, reader confidence improved with the SENSE protocol. CONCLUSION Despite a reduction in SNR, the higher-resolution SENSE CE-MRA provided improved image quality, reduced artifacts, and increased reader confidence compared to the conventional protocol.
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Affiliation(s)
- R Muthupillai
- Department of Radiology, St. Luke's Episcopal Hospital, Houston, Texas, USA.
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Leroy D, Martinot L, Mignonsin P, Lambert B, Jérôme C, Jérôme R. Immobilization of actinide ions in thin layers of polypyrrole/polyacrylamidoglycolic acid (PPy/PAGA) composite. Application to the preparation of alpha spectrometry sources. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2002.90.5_2002.279] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
SummaryWe propose a new fully aqueous electrochemical method for the preparation of high resolution alpha sources. Thin films of polypyrrole (PPy) are prepared by anodic electropolymerization, starting from aqueous solutions of the pyrrole monomer and an anionic polyelectrolyte which is able to complex actinide and play the role of PPy doping agent: polyacrylamidoglycolic acid (PAGA). These thin films can be prepared on various electrodes: stainless steel, platinum, glassy carbon and polyethylene doped by carbon-black. Peeling tests revealed their strong adhesion on stainless steel electrode. Alpha sources were prepared by simple immersion in actinide containing solutions. This easy process results in alpha sources with outstanding energy resolution (FWHM: around 9 keV for various isotopes).
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Cheong BYC, Muthupillai R, Nemeth M, Lambert B, Dees D, Huber S, Castriotta R, Flamm SD. The utility of delayed-enhancement magnetic resonance imaging for identifying nonischemic myocardial fibrosis in asymptomatic patients with biopsy-proven systemic sarcoidosis. Sarcoidosis Vasc Diffuse Lung Dis 2009; 26:39-46. [PMID: 19960787] [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: 05/28/2023]
Abstract
BACKGROUND The pathophysiology of sarcoidosis includes infiltrative inflammatory injury, as well as interstitial fibrosis formation. Delayed-enhancement (DE) magnetic resonance imaging (MRI) techniques have been shown to identify fibrotic tissue as areas of hyperenhancement. To test the hypothesis that DE-MRI can be used to identify myocardial fibrosis resulting from cardiac sarcoidosis, we assessed this method in asymptomatic patients with biopsy-proven systemic sarcoidosis. METHODS Thirty-one patients with biopsy-confirmed systemic sarcoidosis and no known history of heart disease or sarcoid cardiac involvement underwent DE-MRI after gadolinium-chelate administration. The location and extent of DE were quantified by 2 radiologists experienced at evaluating cardiovascular MRI images. RESULTS According to DE-MRI, 8 (26%) of the 31 patients had nonischemic fibrosis, as evidenced by abnormal DE patterns. Unlike characteristic ischemic injuries, most of the fibrosis was mid-myocardial, extending to the adjacent endocardium, epicardium, or both. The most frequent site of fibrosis was the basal inferoseptum, followed by the basal inferolateral wall. CONCLUSIONS In asymptomatic patients with systemic sarcoidosis, DE-MRI may provide a novel, noninvasive method for the early identification of myocardial fibrosis.
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Affiliation(s)
- B Y C Cheong
- Department of Radiology, Texas Heart Institute at St. Luke's Episcopal Hospital, Houston, Texas 77030, USA.
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Lambert B, Van De Wiele C. Selective internal radiation therapy of HCC and liver metastases: a locoregional or worldwide therapy? Q J Nucl Med Mol Imaging 2009; 53:302-304. [PMID: 19521308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Van De Wiele C, Defreyne L, Peeters M, Lambert B. Yttrium-90 labelled resin microspheres for treatment of primary and secondary malignant liver tumors. Q J Nucl Med Mol Imaging 2009; 53:317-324. [PMID: 19521311] [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: 05/27/2023]
Abstract
Neither regional nor systemic chemotherapy significantly improve survival in the majority of patients presenting with liver metastases and their median survival is short. While the incidence of hepatocellular (HCC) is increasingly worldwide, the various treatment approaches that hve been developed to treat non-resectable HCC have had minimal or moderate impact on overall survival. SIR-Spheres (SIRS) are commercially available (90)Y-labelled resin microspheres that when selectively injected via the hepatic artery will become trapped in the tumor caplliary bed and will selectively deliver radiation to the tumor whilst sparing normal tissue. In this manuscript, the available literature on the use of SIRS in the clinic is summarized. First, available, predominantly phase I and II studies, on SIRS treatment performed in patients suffering from liver metastases as well as in patients suffering from multinodular asymptomatic unresectable HCC with a well preserved liver function have consistently reported a favourable safety profile for SIRS therapy; only a limited number of patients develop gastrointestinal ulceration or bleeding. Second, most of the studies also reported a high reponse rate to SIRS treatment resulting in increased life expectancy; median survival rates proved consistently higher when compared to historical controls. Finally, in two randomized controlled phase III trials, benefits were demonstrated for SIRS combined with chemotherapy when compared to the chemo-arm alone in patients suffering from colorectal liver metastasis. However, since these reports, novel, potentially more effective chemotherapeutics have been introduced for treating colorectal liver metastasis and the clinical value of (90)Y-Sirspheres when compared to these novel chemotherapeutics warrants confirmation and validation.
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Affiliation(s)
- C Van De Wiele
- Department of Nuclear Medicine, University Hospital Ghent, Ghent, Belgium.
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Lambert B, Bacher K, Defreyne L. Rhenium-188 based radiopharmaceuticals for treatment of liver tumours. Q J Nucl Med Mol Imaging 2009; 53:305-310. [PMID: 19521309] [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: 05/27/2023]
Abstract
Rhenium-188 (188Re) is a high energy beta-emitter with a physical half life of 17 hours. Various 188Re based radiopharmaceuticals were developed to treat liver malignancies. The vast majority of studies focus on patients suffering from hepatocellular carcinoma (HCC). Most radiopharmaceuticals are based on Lipiodol as a vehicle for the rhenium-188. The radiopharmaceutical that was tested clinically in detail is the 188Re-HDD/Lipiodol, developed by the Seoul University. Clinical data derived from several phase I and II studies using 188Re-HDD/Lipiodol suggest an excellent tolerance in patients with Child-Pugh A cirrhosis. A shortcoming in some trials was the occasional low labelling efficiency of 188Re-HDD/Lipiodol. Some newer 188Re based radiopharmaceuticals claim to have consistent high labelling efficiencies, however clinical data for these compounds are scarce or lacking at this moment. Hopefully, phase I clinical data will become available for promising radiopharmaceuticals such as 188Re-SSS-Lipiodol, developed by the group of Rennes, in the upcoming years. In Dresden a very different approach is used. They labelled human serum albumin microspheres with high activities of 188Re. In a small group of patients with liver metastasis and a few HCC patients, treatment proved safe. In the present clinical field, 188Re-based radiopharmaceuticals will have to proof firmly their strength and reliability in large patient groups if they want to compete with the commercially available yttrium-90 microspheres.
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Affiliation(s)
- B Lambert
- Department of Nuclear Medicine, Ghent University Hospital, Ghent, Belgium.
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Nordenskjöld M, Moldéus P, Lambert B. Effects of ultraviolet light and cyclophosphamide on replication and repair synthesis of DNA in isolated rat liver cells and human leukocytes co-incubated with microsomes. Hereditas 2009; 89:1-6. [PMID: 701095 DOI: 10.1111/j.1601-5223.1978.tb00974.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Lambert B, Lepage Y. Correlations between unsatisfactory colposcopy, cytology, and biopsy in patients with cervical abnormalities. Acta Obstet Gynecol Scand 2007; 86:1269-72. [PMID: 17851823 DOI: 10.1080/00016340701552475] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND The main purpose of this study is to review the clinical features of negative loop electrosurgical procedure(LEEP)-cones, in order to lower their rate. METHODS Some 162 patients with LEEP-cones were reviewed. Control cytology,satisfactory-unsatisfactory colposcopy, biopsies and endocervical curettage (ECC) were compared to the presence or absence of cone pathology. Statistical analysis, t -tests and Pearson x2 tests were performed, with a significance level of p<0.05. RESULTS Negative cones are associated with unsatisfactory colposcopy in 47/60 cases (78.3%) compared to 13/60(21.8%) for satisfactory colposcopy (p=0.011). Unsatisfactory colposcopy is associated with a negative ECC in 53/74(71.6%) cases, compared to 21/74 (28.4%) for satisfactory colposcopy (p=0.024). Finally, negative ECC are associated with negative cones in 32/41 (78%) compared to 9/41 (22%) for positive ECC (p=0.002). CONCLUSIONS Low grade cytology, CIN1 biopsies and ECC should be followed for at least 1 year. This results in a lowering of cone negativity from 60/162(37%) to 32/162 (19.8%).
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Affiliation(s)
- B Lambert
- Department of Gynaecology, Hôtel-Dieu Hospital, and Department of Mathematics and Statistics, Université de Montréal, Montréal, Canada.
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Lambert B, Buckle M. Corrigendum to “Characterisation of the interface between nucleophosmin (NPM) and p53: Potential role in p53 stabilisation” [FEBS Lett. 580 (2006) 345-350]. FEBS Lett 2006. [DOI: 10.1016/j.febslet.2006.01.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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