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Pharand P, Brousseau-Fournier C, Côté C, Gagné F, Fournier M, Brousseau P. Cellular Effects of Lanthanides on Mytilus Edulis. J Xenobiot 2015; 5:5781. [PMID: 30701046 PMCID: PMC6324482 DOI: 10.4081/xeno.2015.5781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Beaudry A, Lacaze E, Jobin-Piché A, Masson S, Auffret M, Brousseau P, Fournier M. Ecotoxicological Evaluation of the Immunocompetence of two Bivalves Species ( Mya Arenaria and Mytilus Edulis ) in the Saguenay Fjord Including a Salinity Gradient. J Xenobiot 2015; 5:5769. [PMID: 30701041 PMCID: PMC6324476 DOI: 10.4081/xeno.2015.5769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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53
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O'Carrigan B, Fournier M, Olver IN, Stockler MR, Whitford H, Toner GC, Thomson DB, Davis ID, Hanning F, Singhal N, Underhill C, Clingan P, McDonald A, Boland A, Grimison P. Testosterone deficiency and quality of life in Australasian testicular cancer survivors: a prospective cohort study. Intern Med J 2015; 44:813-7. [PMID: 25081047 DOI: 10.1111/imj.12500] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 05/01/2014] [Indexed: 11/29/2022]
Abstract
This is the first prospective study in a contemporary Australian/New Zealand population to determine the prevalence of testosterone deficiency in testicular cancer survivors at 12 months from treatment, and any association with poorer quality of life. Hormone assays from 54 evaluable patients in a prospective cohort study revealed biochemical hypogonadism in 18 patients (33%) and low-normal testosterone in 13 patients (24%). We found no association between testosterone levels and quality of life (all P > 0.05). Hypogonadal patients should be considered for testosterone replacement to prevent long-term morbidity.
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Monin A, Baumann PS, Griffa A, Xin L, Mekle R, Fournier M, Butticaz C, Klaey M, Cabungcal JH, Steullet P, Ferrari C, Cuenod M, Gruetter R, Thiran JP, Hagmann P, Conus P, Do KQ. Glutathione deficit impairs myelin maturation: relevance for white matter integrity in schizophrenia patients. Mol Psychiatry 2015; 20:827-38. [PMID: 25155877 DOI: 10.1038/mp.2014.88] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/30/2014] [Accepted: 06/23/2014] [Indexed: 12/18/2022]
Abstract
Schizophrenia pathophysiology implies both abnormal redox control and dysconnectivity of the prefrontal cortex, partly related to oligodendrocyte and myelin impairments. As oligodendrocytes are highly vulnerable to altered redox state, we investigated the interplay between glutathione and myelin. In control subjects, multimodal brain imaging revealed a positive association between medial prefrontal glutathione levels and both white matter integrity and resting-state functional connectivity along the cingulum bundle. In early psychosis patients, only white matter integrity was correlated with glutathione levels. On the other side, in the prefrontal cortex of peripubertal mice with genetically impaired glutathione synthesis, mature oligodendrocyte numbers, as well as myelin markers, were decreased. At the molecular levels, under glutathione-deficit conditions induced by short hairpin RNA targeting the key glutathione synthesis enzyme, oligodendrocyte progenitors showed a decreased proliferation mediated by an upregulation of Fyn kinase activity, reversed by either the antioxidant N-acetylcysteine or Fyn kinase inhibitors. In addition, oligodendrocyte maturation was impaired. Interestingly, the regulation of Fyn mRNA and protein expression was also impaired in fibroblasts of patients deficient in glutathione synthesis. Thus, glutathione and redox regulation have a critical role in myelination processes and white matter maturation in the prefrontal cortex of rodent and human, a mechanism potentially disrupted in schizophrenia.
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Fraser M, Rault P, Fortier M, Brousseau P, Fournier M, Surette C, Vaillancourt C. Immune response of blue mussels (Mytilus edulis) in spawning period following exposure to metals. J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4895] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Côté C, Lemarchand K, Desbiens I, Barthes M, Osterheld K, Millour M, Pelletier É, Fournier M, Brousseau P. Immunotoxicity of silver nanoparticles in blue mussel (Mytilus edulis). J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Cloutier PL, Fortin F, Fournier M, Brousseau P, Groleau PÉ, Desrosiers M. Analytical method development for the determination of polycyclic aromatic hydrocarbons in biological samples. J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Brousseau-Fournier C, Lacaze E, Champoux L, Fournier M, Brousseau P. Immunologic and genotoxic profile of Northern Gannet (Morus bassanus) from Bonaventure Island. J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
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Cloutier PL, Fortin F, Fournier M, Brousseau P, Groleau PÉ, Desrosiers M. Development of an analytical method for the determination of low-level of dioxin and furans in marine and freshwater species. J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Niro J, Fournier M, Oberlin C, Le Tohic A, Panel P. Endometriotic lesions of the lower troncular nerves. ACTA ACUST UNITED AC 2014; 42:702-5. [DOI: 10.1016/j.gyobfe.2014.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 05/27/2014] [Indexed: 10/24/2022]
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Boussen S, Coulange M, Fournier M, Gainnier M, Michelet P, Micoli C, Negrel L. Evaluation of Transport Ventilators at Mild Simulated Altitude: A Bench Study in a Hypobaric Chamber. Respir Care 2013; 59:1233-41. [DOI: 10.4187/respcare.02985] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kleinert C, Mournier M, Fortier M, Brousseau P, DeGuise S, Fournier M. Several pharmaceuticals impaired harbor seal lymphocytes (Phoca vitulina) in vitro. J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Fraser M, Rault P, Roumier PH, Fortier M, André C, Brousseau P, Gagné F, Fournier M, Surette C, Vaillancourt C. Decrease in phagocytosis capacity of hemocyte during spawning in Mytilus edulis: a pilot study. J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Rault P, Fortier M, Pédelucq J, Lacaze E, Brousseau P, Auffret M, Fournier M. Immunotoxicity of heavy metals (silver, cadmium, mercury and lead) on marine bivalve Mytilus edulis: in vitro exposure of hemocytes. J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
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Alix G, Beaudry A, Brousseau-Fournier C, Fortier M, Auffret M, Fournier M, Brousseau P. Increase sensitivity to metals of hemocytes obtained from Mya arenaria collected at different distances from the shore. J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Brousseau-Fournier C, Alix G, Beaudry A, Gauthier-Clerc S, Duchemin M, Fortier M, Auffret M, Fournier M, Brousseau P. Role of confounding factors in assessing immune competence of bivalves (Mya arenaria, Mytilus edulis) exposed to pollutants. J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
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Beaudry A, Brousseau-Fournier C, Alix G, Fortier M, Auffret M, Brousseau P, Fournier M. Influence of tidal stress on the immunocompetence of hemocytes in soft-shell clam (Mya arenaria). J Xenobiot 2013. [DOI: 10.4081/xeno.2013.s1.e13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
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Ransom D, Wilson K, Fournier M, Simes RJ, Gebski V, Yip D, Tebbutt N, Karapetis CS, Ferry D, Gordon S, Price TJ. Final results of Australasian Gastrointestinal Trials Group ARCTIC study: an audit of raltitrexed for patients with cardiac toxicity induced by fluoropyrimidines. Ann Oncol 2013; 25:117-21. [PMID: 24299960 DOI: 10.1093/annonc/mdt479] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cardiac toxicity an uncommon but serious side-effect of some fluoropyrimides. Cardiac toxicity from raltitrexed is rarely reported. With this background, we initiated this study to investigate the incidence of cardiac events in patients who had switched to raltitrexed following cardiac toxicity from fluoropyrimidines (5-fluorouracil or capecitabine). PATIENTS AND METHODS Pharmacy records were used to identify patients receiving raltitrexed from January 2004 till March 2012. Medical records were then reviewed to confirm the use of raltitrexed after cardiac toxicity from 5-fluorouracil or capecitabine. The primary end point was the rate of further cardiac events after commencing raltitrexed. RESULTS Forty-two patients were identified and the majority had colorectal cancer. Prior regimens included 5-fluorouracil ± leucovorin, capecitabine alone, FOLFOX, FOLFIRI, epirubicin/cisplatin/5-fluorouracil, and capecitabine/oxaliplatin. Seven patients (17%) had bolus 5-fluorouracil regimens, 26 patients (62%) had infusion 5-fluorouracil regimens, and 9 patients (21%) had capecitabine alone or in combination. Angina was the most common cardiac toxicity from 5-fluorouracil or capecitabine and usually occurred in the first or the second cycle. Four patients after their first cardiac event continued with the same 5-fluorouracil or capecitabine regimen with the addition of nitrates and calcium antagonists but still had further cardiac events. After changing to raltitrexed, either as a single agent or a continuing combination regimen, no patients experienced further cardiac toxicity. CONCLUSION Raltitrexed is associated with no significant cardiac toxicity in patients who have experienced prior cardiac toxicity from 5-fluorouracil or capecitabine. Raltitrexed, alone or in combination with oxaliplatin or irinotecan, provides a safe option in terms of cardiac toxicity for such patients.
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Swanson KJ, Gossett DR, Fournier M. Pediatricians' beliefs and prescribing patterns of adolescent contraception: a provider survey. J Pediatr Adolesc Gynecol 2013; 26:340-5. [PMID: 24075083 DOI: 10.1016/j.jpag.2013.06.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/12/2013] [Accepted: 06/17/2013] [Indexed: 10/26/2022]
Abstract
STUDY OBJECTIVE Teen pregnancy and sexually transmitted infection (STI) rates continue to be significant public health problems in the United States. While general pediatricians are in a unique position to improve these issues by addressing contraception with their adolescent patients, there are no data describing their current prescribing patterns. This study sought to elucidate the beliefs and prescribing patterns of general pediatricians and pediatrics residents and to distinguish whether these were affected by practice setting, level of training, or gender. DESIGN, SETTING, PARTICIPANTS General pediatricians and pediatrics residents affiliated with Lurie Children's Hospital in Chicago, IL, were asked to complete a survey regarding adolescent contraception. MAIN OUTCOME MEASURES Questions were related to obtaining information about contraception, contraceptive counseling, knowledge of contraceptive methods, prescribing patterns of contraceptives, and concerns about individual contraceptive methods. RESULTS 120 physicians of an eligible 411 physicians participated in this study (29%). 79% of participants had prescribed at least 1 contraceptive method. The most commonly prescribed method was oral contraceptive pills at 72%. We noted few differences in prescribing patterns based on above criteria. Numerous misconceptions existed among participants, including a high rate of concern about infertility with IUD use (29% among physicians who prescribed at least 1 method of contraception). CONCLUSIONS General pediatricians can improve their rates of prescribing contraception to adolescents, and could utilize more of the approved methods. One way to do so may be to implement educational interventions among general pediatricians.
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Calmet D, Ameon R, Bombard A, Forte M, Fournier M, Herranz M, Jerome S, Kwakman P, Llaurado M, Tokonami S. ISO standards on test methods for water radioactivity monitoring. Appl Radiat Isot 2013; 81:21-5. [DOI: 10.1016/j.apradiso.2013.03.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 03/14/2013] [Indexed: 11/29/2022]
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Fournier M, Dlouhá J, Jaouen G, Almeras T. Integrative biomechanics for tree ecology: beyond wood density and strength. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:4793-815. [PMID: 24014867 DOI: 10.1093/jxb/ert279] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Functional ecology has long considered the support function as important, but its biomechanical complexity is only just being elucidated. We show here that it can be described on the basis of four biomechanical traits, two safety traits against winds and self-buckling, and two motricity traits involved in sustaining an upright position, tropic motion velocity (MV) and posture control (PC). All these traits are integrated at the tree scale, combining tree size and shape together with wood properties. The assumption of trait constancy has been used to derive allometric scaling laws, but it was more recently found that observing their variations among environments and functional groups, or during ontogeny, provides more insights into adaptive syndromes of tree shape and wood properties. However, oversimplified expressions have often been used, possibly concealing key adaptive drivers. An extreme case of oversimplification is the use of wood basic density as a proxy for safety. Actually, as wood density is involved in stiffness, loads, and construction costs, the impact of its variations on safety is non-trivial. Moreover, other wood features, especially the microfibril angle (MFA), are also involved. Furthermore, wood is not only stiff and strong, but it also acts as a motor for MV and PC. The relevant wood trait for this is maturation strain asymmetry. Maturation strains vary with cell-wall characteristics such as MFA, rather than with wood density. Finally, the need for further studies about the ecological relevance of branching patterns, motricity traits, and growth responses to mechanical loads is discussed.
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Massalou D, Fournier M, Salucki B, Baqué P. Small bowel obstruction secondary to transport aircraft: coincidence or reality? Clin Res Hepatol Gastroenterol 2013; 37:434-6. [PMID: 23806628 DOI: 10.1016/j.clinre.2013.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/23/2013] [Accepted: 05/14/2013] [Indexed: 02/04/2023]
Abstract
Small bowel obstructions (SBO) are a leading cause of admission to general surgery, posing the problem of the aetiology and treatment based on the diagnosis. More than 300 patients were admitted for SBO in 2011 in our institution. In our clinical practice, we have had to care for patients with SBO immediately after air travel, all of whom had an antecedent of abdominal surgery by laparotomy. The finding of episodes of acute SBO immediately following a commercial flight has never been reported in the literature. We report the cases of four patients for whom we offer several pathophysiological hypotheses, and we publish the first dietary rules for people with a history of intraperitoneal surgery to adopt during a flight.
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Giacomino S, Peñas E, Ferreyra V, Pellegrino N, Fournier M, Apro N, Carrión MO, Frias J. Extruded flaxseed meal enhances the nutritional quality of cereal-based products. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2013; 68:131-136. [PMID: 23640296 DOI: 10.1007/s11130-013-0359-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Human consumption of flaxseed is increasing due to its health benefit properties and extrusion processes can enhance its nutritional quality. Extruded flaxseed meal (EFM) obtained in a pilot plant was characterized and incorporated in flour mixes and cereal-based bars to demonstrate its nutritious usefulness. Amino acid content was not affected by extrusion and, despite lysine was the limitating amino acid, the chemical score (CS) was 83 %. Thiamin and riboflavin decreased slightly as consequence of extrusion, phytic acid did not change and trypsin inhibitor activity was undetectable. Proximate composition and nutritional quality determined by biological and chemical indexes were compared among EFM, flour mixes (FM) and cereal bars (CB). They presented high protein levels (26, 20 and 17 %, respectively), good biological value (BV) (80, 79 and 65, respectively), acceptable true protein digestibility (TD) (73, 79 and 78, respectively), and high dietary fiber (33, 20.5 and 18 %, respectively). The ratio of ω6:ω3 for CB was within the WHO/FAO recommendations. These results open a new venue for the usefulsess of nutritious/healthy extruded flaxseed flours into ready-to-eat cereal-based products with improved nutritional quality.
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Fournier M, Chollet M, Theobald K, Göke R, Lehmacher W. Basalinsulin plus Lixisenatid versus Basal-Bolus Therapie (ICT) und koventionelle Therapie (CT) bei Patienten mit Typ 2 Diabetes - Ergebnisse eines indirekten Vergleichs. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341708] [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]
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75
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Bruneau A, Fortier M, Gagne F, Gagnon C, Turcotte P, Tayabali A, Davis TL, Auffret M, Fournier M. Size distribution effects of cadmium tellurium quantum dots (CdS/CdTe) immunotoxicity on aquatic organisms. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2013; 15:596-607. [PMID: 23738358 DOI: 10.1039/c2em30896g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The increasing use of products derived from nanotechnology has raised concern about their potential toxicity to aquatic life. This study sought to examine the comparative immunotoxicity of capped cadmium sulphide/cadmium telluride (CdS/CdTe) quantum dots (QDs) and possible impact of particle/aggregate size on two bivalves (Mytilus edulis and Elliptio complanata) and a fish (Oncorhynchus mykiss). The QDs were dispersed in sterile water and fractionated using a series of micro/ultrafiltration membranes of decreasing pore size: 450 nm, 100 nm, 50 nm, 25 nm, 100 kDa (6.8 nm), 30 kDa (4.6 nm), 10 kDa (3.2 nm) and 1 kDa (1.5 nm). The total concentrations of cadmium and tellurium were determined for the filtered material and for that retained on the filters (retentate). The immunotoxicity was determined by measuring cell viability and phagocytosis. Results revealed that nanoparticles retained on the ultrafilters had a higher Cd/Te ratio compared to the permeate fraction (ratio of 5 and 2 respectively) which could indicate that the CdS core was not associated with the permeable fraction of Cd. Our results demonstrate that the toxicity of CdS/CdTe QDs was concentration and size dependent. Large CdS/CdTe QD aggregates (25 nm < size < 100 nm) reduced phagocytosis more than did smaller nanoparticles (<25 nm). Moreover, our results revealed that the different species responded differently to these fractions. Mytilus edulis hemocytes were less sensitive to CdS/CdTe QDs than the Oncorhynchus mykiss macrophage and Elliptio complanata hemocytes.
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