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Murviel-lès-Montpellier, France

Le Meignen M.,Hospital lArchet II | Auquier P.,Research Unit EA 3279 | Barlogis V.,Childrens Hospital of La Timone | Sirvent N.,Hospital Arnaud de Villeneuve | And 11 more authors.
Blood | Year: 2011

Femoral and lumbar bone mineral densities (BMDs) were measured in 159 adults enrolled in the Leucémies de l'Enfant et de l'Adolescent program, a French prospective multicentric cohort of childhood leukemia survivors. BMDs were expressed as Z-scores, and multivariate linear regression analyses were used to construct association models with potential risk factors. Mean age at evaluation and follow-up was 23 and 14.7 years, respectively. In the whole cohort, mean femoral Z-score was -0.19 ± 0.08. Two factors were associated with lower femoral BMD transplantation (-0.49 ± 0.15 vs -0.04 ± 0.10 in the chemotherapy group; P = .006) and female sex (-0.34 ± 0.10 vs -0.03 ± 0.13; P = .03). Among patients who received a transplant, the only significant risk factor was hypogonadism (-0.88 ± 0.16 vs -0.10 ± 0.23; P = .04). A slight reduction in lumbar BMD (mean Z-score, -0.37 ± 0.08) was detected in the whole cohort without difference between the transplantation and chemotherapy groups. Among patients who received a transplant, younger age at transplantation was correlated with a low lumbar BMD (P = .03). We conclude that adults who had received only chemotherapy for childhood leukemia have a slight reduction in their lumbar BMD and a normal femoral BMD. Patients who received a transplant with gonadal deficiency have a reduced femoral BMD which might increase the fracture risk later in life. © 2011 by The American Society of Hematology. Source


Pellestor F.,Montpellier University | Anahory T.,Hospital Arnaud de Villeneuve | Lefort G.,Hospital Arnaud de Villeneuve | Puechberty J.,Hospital Arnaud de Villeneuve | And 3 more authors.
Human Reproduction Update | Year: 2011

Background: Complex chromosomal rearrangements (CCRs) describe structural rearrangements, essentially translocations, involving at least three breakpoints on two or more chromosomes. Although they are rare in humans, their clinical identification is important since CCR carriers can display various phenotypes which include phenotypically normal subjects, infertile males and patients with mental retardation and/or congenital abnormalities. The rearrangement can be de novo or familial. The use of fluorescent in situ hybridization assays and molecular techniques for the characterization of CCRs have indicated that the rearrangements could be more complex than initially assumed. Accumulating data have revealed that the mechanisms underlying the genesis of CCRs remain elusive. Methods: We performed a large PubMed search in order to summarize the current knowledge in this field and address important aspects of CCR formation and meiotic behavior, highlighting the complexity of these rearrangements at the chromosomal and genomic level. Results: The review of published data indicates that the complexity of CCRs is becoming increasingly known, thanks to the application of more and more efficient molecular techniques. These approaches have allowed the precise sequence analysis of breakpoints and the identification of insertions, deletions, inversions and recombination events. New models have been proposed for the formation of CCRs, based on replication-based mechanisms and specific sequence elements. Their meiotic behavior has been discussed in the light of these new molecular data. conclusions: Despite the increasing understanding of the mechanisms involved in their genesis, CCRs arise as unique, complex events for which the genetic and reproductive counseling of carriers remains a challenge. © The Author 2011. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. Source


Berthet J.P.,Hospital Arnaud de Villeneuve | Canaud L.,Hospital Arnaud de Villeneuve | D'Annoville T.,Hospital Arnaud de Villeneuve | Alric P.,Hospital Arnaud de Villeneuve | Marty-Ane C.-H.,Hospital Arnaud de Villeneuve
Annals of Thoracic Surgery | Year: 2011

Background: The reconstruction of large full-thickness chest wall defects after resection of T3/T4 non-small cell lung carcinomas or primary chest wall tumors presents a technical challenge for thoracic surgeons and plays a central role in determining postoperative morbidity. The objective is to evaluate our results in chest wall reconstruction using a combination of expanded polytetrafluoroethylene (ePTFE) mesh and titanium plates. Methods: Since 2006, 19 patients underwent reconstruction for wide chest wall defects using a combination of ePTFE mesh and titanium plates. The chest wall reconstruction was achieved by using a layer of 2-mm thickness ePTFE shaped to match the chest wall defect and sewed under maximum tension. The ePTFE is placed close to the lung and fixed onto the bony framework and onto the titanium plate, which is inserted on the ribs. Results: Seventeen patients underwent a complete R0 resection with the removal of 3 to 9 ribs (mean, 4.8 ribs), including the sternum in 7 cases. Reconstruction required 1 to 4 horizontal titanium bars (mean, 1.7 bars). In 1 patient, a vertical titanium device was implanted for a large posterolateral defect. There were 2 cases of infection, which required explantation of the osteosynthesis system in 1 patient. One patient had partial skin necrosis that required prompt debridement. One patient had a major complication in the form of respiratory failure. Conclusions: Our experience and initial results show that titanium rib osteosynthesis in combination with Dualmesh can easily and safely be used in a one-stage procedure for major chest wall defects. © 2011 The Society of Thoracic Surgeons. Source


Berthet J.-P.,Hospital Arnaud de Villeneuve | Attard O.,Hospital Arnaud de Villeneuve | Solovei L.,Hospital Arnaud de Villeneuve | Bourdin A.,Hospital Arnaud de Villeneuve | And 4 more authors.
European Surgical Research | Year: 2014

Objective: To characterize pulmonary hemodynamic changes in relation to lung injury at 2 time points [48 h (H48) and 168 h (H168)] after pneumonectomy under intraoperative protective ventilation in order to improve postpneumonectomy pulmonary edema (PPE) prevention. Method: Fifteen pigs (25 ± 1.9 kg) were randomly allocated to nonsurgical (control, n = 5) and surgical (H48 and H168) groups. A left pneumonectomy under volume-controlled one-lung ventilation (OLV) (low tidal volume, positive end-expiratory pressure = 4 cm H2O, inspired oxygen fraction = 50%) was performed in surgical animals. Mean pulmonary artery pressure (MPAP) and pulmonary artery occlusion pressure were recorded. Pulmonary vascular resistance (PVR) was calculated. Pulmonary damage score (PDS) and bronchoalveolar albumin level were evaluated. Data were collected after induction (T0), after OLV (T1), after left pneumonectomy (T2), and at H48 or H168 (T3). Results: Pneumonectomy caused precapillary pulmonary arterial hypertension (PAH) measured at T3 H48 (36.2 ± 3.67 mm Hg). PAH was delayed temporarily (both after OLV and after pneumonectomy) (p < 0.001), and linked with PVR (r = 0.93; p < 0.05). PDS and bronchoalveolar albumin level varied with MPAP (r = 0.76; p < 0.001 and r = 0.55; p < 0.05). Conclusion: Given that PAH is delayed and related to PVR increase, indicating secondary pulmonary vascular bed adaptation limits, pharmacological treatment should focus on a delayed failure in pulmonary capacitance in patients at risk of PPE. © 2014 S. Karger AG, Basel. Source

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